Transmission device having an adjustable oscillating output

In an oscillating transmission;

• a ring gear mounted for rotation, means for oscillating said ring gear including actuating means for reversing rotation of said ring gear from one direction to the other, contact means rotated by said ring gear to contact said actuating means to reverse rotation from one direction to the other, said contact means being two contact members, means mounting said two contact members for relative movement to vary the angle at which said actuating means is actuated, one contact member being mounted for rotation by said ring gear, means for mounting the other contact member for rotation within said ring gear, connecting means connecting, said other contact member to said ring gear for being driven thereby to contact said actuating means to reverse rotation of said ring gear, said connecting means disconnecting said other contact member from said ring gear when said other contact member is rotated to vary the angle between the other contact member and said one contact member;
• said ring gear being fixedly mounted on a hollow shaft having an output end, cap means rigidly fixed on the output end, shaft means extending through said cap means into said hollow shaft engaging said means for mounting the other contact member for rotation within said ring gear to rotate said other contact member, said cap means having a top surface thereon, said top surface having indicia for indicating the angular movement of said cap means, a first indicating means on said top surface indicates one end of said angular movement while the end of said shaft means which extends through said cap means has a second indicating means for indicating the other end of said angular movement.

In an oscillating transmission;

• a ring gear mounted for rotation;
• means for oscillating said ring gear including actuating means for reversing rotation of said ring gear from one direction to the other, contact means rotated by said ring gear to contact said actuating means to reverse rotation from one direction to the other, said contact means being two contact members, means mounting said two contact members for relative movement to vary the angle at which said actuating means is actuated, one contact member being mounted for rotation by said ring gear, means for mounting the other contact member for rotation within said ring gear, connecting means connecting said other contact member to said ring gear for being driven thereby to contact said actuating means to reverse rotation of said ring gear, said connecting means disconnecting said other contact member from said ring gear when said other contact member is rotated to vary the angle between the other contact member and said one contact member, said ring gear having an inner cylindrical surface, serration means positioned around said inner cylindrical surface, said other contact member comprising a radial projection means extending from said means for mounting the other contact member, said connecting, means comprising a pointer on said radial projection means engaging a serration of said serration means, movement of said ring gear in one direction driving said radial projection means to contact said actuating means.

In an oscillating transmission;

• a ring gear mounted for rotation;
• means for oscillating said ring gear including actuating means for reversing rotation of said ring gear from one direction to the other, contact means rotated by said ring gear to contact said actuating means to reverse rotation from one direction to the other, said contact means being two contact members, means mounting said two contact members for relative movement to vary the angle at which said actuating means is actuated, one contact member being mounted for rotation by said ring gear, means for mounting the other contact member for rotation within said ring gear, connecting means connecting said other contact member to said ring gear for being driven thereby to contact said actuating means to reverse rotation of said ring gear, said connecting means disconnecting said other contact member from said ring gear when said other contact member is rotated to vary the angle between the other contact member and said one contact member, said ring gear having an inner cylindrical surface, serration means positioned around said inner cylindrical surface, said other contact member comprising a radial projection means extending from said means for mounting the other contact member, said connecting means comprising a pointer on said radial projection means engaging a serration of said serration means, movement of said ring gear in one direction driving said radial projection means to contact said actuating means, said pointer being movable over said serrations from one to the other for disconnecting said other contact member from said ring gear when said other contact member is rotated to vary the angle.

In an oscillating transmission;

• a ring gear mounted for rotation;
• means for oscillating said ring gear including actuating means for reversing rotation of said ring gear from one direction to the other, contact means rotated by said ring gear to contact said actuating means to reverse rotation from one direction to the other, said contact means being two contact members, means mounting said two contact members for relative movement to vary the angle at which said actuating means is actuated, one contact member being mounted for rotation by said ring gear, means for mounting the other contact member for rotation within said ring gear, connecting means connecting said other contact member to said ring gear fox being driven thereby to contact said actuating means to reverse rotation of said ring gear, said connecting means disconnecting said other contact member from said ring gear when said other contact member is rotated to vary the angle between the other contact member and said one contact member, said means for mounting the other contact member for rotation within said ring gear comprising a cylindrical member located radially inwardly from said ring gear, said other contact member being fixed to said cylindrical member and extending radially outwardly therefrom, said other contact member having an outer radial end, said connecting means connecting the outer radial end of said other contact member to said ring gear, said ring gear being fixedly mounted on a hollow shaft, said hollow shaft having an output end, said cylindrical member being mounted for rotation with said hollow shaft.

In an oscillating transmission;

• a ring gear mounted for rotation;
• means for oscillating said ring gear including actuating means for reversing rotation of said ring gear from one direction to the other, contact means rotated by said ring gear to contact said actuating means to reverse rotation from one direction to the other, said contact means being two contact members, means mounting said two contact members for relative movement to vary the angle at which said actuating means is actuated, one contact member being mounted for rotation by said ring gear, means for mounting the other contact member for rotation within said ring gear, connecting means connecting said other contact member to said ring gear for being driven thereby to contact said actuating means to reverse rotation of said ring gear, said connecting means disconnecting said other contact member from said ring gear when said other contact member is rotated to vary the angle between the other contact member and said one contact member, said means for mounting the other contact member for rotation within said ring gear comprising a cylindrical member, said ring gear being fixedly mounted on a hollow shaft having an output end, said cylindrical member being mounted for rotation with said hollow shaft, said cylindrical member extending through said hollow shaft out of said output end, means for turning said cylindrical member to rotate said other contact member.

In an oscillating transmission;

• a ring gear mounted for rotation;
• means for oscillating said ring gear including actuating means for reversing rotation of said ring gear from one direction to the other, contact means rotated by said ring gear to contact said actuating means to reverse rotation from one direction to the other, said contact means being two contact members, means mounting said two contact members for relative movement to vary the angle at which said actuating means is actuated, one contact member being mounted for rotation by said ring gear, means for mounting the other contact member for rotation within said ring gear, connecting means connecting said other contact member to said ring gear for being driven thereby to contact said actuating means to reverse rotation of said ring gear, said connecting means disconnecting said other contact member from said ring gear when said other contact member is rotated to vary the angle between the other contact member and said one contact member, second connecting means connecting said other contact member to said ring gear for being driven thereby to contact said actuating means to reverse rotation of said ring gear, said second connecting means disconnecting said other contact member from said ring gear when said other contact member is rotated to vary the angle between the other contact member and said one contact member.

An oscillating transmission comprising;

• an input shaft means;
• an output gear means;
• a pivoted gear cage having two drive gear means thereon, a first clockwise drive gear means and a second counter-clockwise drive gear means for alternate driving engagement with said output gear means to oscillate it;
• said input shaft means having a gear driving said two drive gear means, said pivoted gear cage being pivotally mounted so that in one position said first clockwise drive gear means drivingly engages said output gear means and in a second position said second counter-clockwise drive gear means drivingly engages said output gear means;
• a first overcenter spring means for biasing said gear cage to bias one of said drive gear means or the other into driving engagement with said output gear means on either side of a first intermediate position between said driving engagement positions of said drive gear means;
• toggle means mounted for movement relative to said gear cage between a cooperating first and second limit means on said gear cage, said toggle means including second overcenter spring means for biasing said toggle means against said first or second limit means on said gear cage on either side of a second intermediate position;
• said first limit means, when biased by said second overcenter spring means through said toggle means, biasing one of said drive gear means of said gear cage into driving engagement with said output gear means along with said first overcenter spring means for rotating said output gear means in one direction;
• said second limit means, when biased by said second overcenter spring means through said toggle means, biasing the other of said drive gear means of said gear cage into driving engagement with said output gear means along with said first overcenter spring means for rotating said output gear means in the other directions actuating means on said toggle means said output gear means having contact means to contact said actuating means to move said toggle means in one direction over said second intermediate position where the second overcenter spring means will bias said toggle means to its cooperating limit means and then bias the gear cage against the bias of said first overcenter spring means;
• when the gear cage is moved over said first intermediate position the first overcenter spring means will join the second overcenter spring means and bias said gear cage to driving engagement changing the direction of rotation of said output gear means whereby said contact means of said output gear means will contact said actuating means on said toggle means and move said toggle means in the other direction over said second intermediate position where the second overcenter spring means will bias said toggle means to its other cooperating limit means and then bias the gear cage against the bias of said first overcenter spring means;
• when the gear cage is moved over said first intermediate position the first overcenter spring means will join the second overcenter spring means and bias said gear cage to driving engagement changing the direction of rotation of said output gear means.

In combination in a transmission, a hollow output shaft having a radial flange with an annular flange extending downwardly therefrom, an internal ring gear formed around the inner surface of said annular flange, serrations formed around the inner surface of said annular flange between said radial flange and said internal ring gear, gear means engaging said internal ring gear for rotating said hollow output shaft in one direction and then in the other direction for oscillation, a toggle device means for changing the direction of rotation of said hollow output shaft at each end of a predetermined angle, said toggle device means having actuating means to move said toggle device means in one direction or the other, means for mounting a cylindrical member for relative concentric rotation with said hollow output shaft, said cylindrical member having one end extending into said annular flange and the other end extending downwardly therefrom, a plurality of longitudinal grooves extending along the length of the interior of said cylindrical member, said one end of said cylindrical member having a first radial projection for contacting said actuating means and moving it in one direction, said radial projection having a pointer engaging one of said serrations, a second projection extending from the end of said annular flange for contacting said actuating means and moving it in the other direction, a connector means connecting said inner surface of said hollow output shaft to the interior of said cylindrical member, said connector means having a centerbody with long vanes projecting radially therefrom for engaging said longitudinal grooves, and means for rotating said connector means which in turn moves said cylindrical member through said long vanes overriding said serrations to vary the angle between the first radial projection and second projection.

An oscillating transmission having an output gear, said output gear being mounted for rotation in either direction, a gear cage having a first drive gear and a second drive gear for alternately driving said output gear to oscillate said output gear between a first and second angular position, means mounting said gear cage for movement between a first and second drivingly engaged position, toggle means for alternately moving said gear cage in one direction to said first drivingly engaged position to drivingly engage said first drive gear with said output gear to drive said output gear in a direction to its second angular position and in the other direction to said second drivingly engaged position to drivingly engage said second drive gear with said output gear to drive said output gear in a direction to its first angular position, first biasing means for alternately biasing said toggle means and gear cage in one direction to the other toward its first or second drivingly engaged position, means for removing the bias of said first biasing means from said gear cage during the movement of said output gear to its first or second angular position, and second biasing means for directly biasing said gear cage in said one direction towards its first drivingly engaged position to maintain the gear cage biased in said one direction when the bias of said first biasing means has been removed to move said gear cage in said other direction at least until said first biasing means is biasing said gear cage in said other direction.

In combination in a transmission, a hollow output shaft having a radial flange with an annular flange extending downwardly therefrom, an internal ring gear formed around the inner surface of said annular flange, serrations formed around the inner surface of said annular flange between said radial flange and said internal ring gear, gear means engaging said internal ring gear for rotating said hollow output shaft in one direction and then in the other direction for oscillation, a toggle device means for changing the direction of rotation of said hollow output shaft at each end of a predetermined angle, said toggle device means having actuating means to move said toggle device means in one direction or the other, means for mounting a cylindrical member for concentric rotation with said hollow output shaft, said cylindrical member having one end extending into said annular flange and the other end extending downwardly therefrom, said one end of said cylindrical member having a first radial projection for contacting said actuating means and moving it in one direction, said radial projection having a pointer engaging one of said serrations, a second projection mounted for rotation by said annular flange for contacting said actuating means and moving it in the other direction, a centerbody means connected to the interior of said cylindrical member for rotation therewith, and means for rotating said centerbody means in relation to said hollow output shaft which moves said cylindrical member with said pointer overriding said serrations to vary the predetermined angle between the first radial projection and second projection.

In combination in a transmission, a hollow output shaft having a radial flange with an annular flange extending downwardly therefrom, an internal ring gear formed around the inner surface of said annular flange, serrations formed around the inner surface of said hollow output shaft, gear means engaging said internal ring gear for rotating said hollow output shaft in one direction and then in the other direction for oscillation, a toggle device means for changing the direction of rotation of said hollow output shaft at each end of a predetermined angle, said toggle device means having actuating means to move said toggle device means in one direction or the other, means for mounting a cylindrical member for concentric rotation with said hollow output shaft, said cylindrical member having a first radial projection for contacting said actuating means and moving it in one direction, a second projection mounted for rotation by said annular flange for contacting said actuating means and moving it in the other direction, a centerbody means connected to the interior of said cylindrical member below said hollow output shaft for rotation therewith, said centerbody means having short vanes projecting therefrom into said hollow output shaft engaging said serrations, and means for rotating said centerbody means in relation to said hollow output shaft which moves said cylindrical member with said short vanes overriding said serrations to vary the predetermined angle between the first radial projection and second projection.

In combination in a transmission, a hollow output shaft having a first inner surface and an outwardly extending radial flange with an annular flange extending downwardly therefrom, said annular flange having a second inner surface, an internal ring gear formed on the inner surface of said annular flange, serrations around one of said inner surfaces, gear means engaging said internal ring gear for rotating said hollow output shaft in one direction and then in the other direction for oscillation, a toggle device means for changing the direction of rotation of said hollow output shaft at each end of a predetermined angle, said toggle device means having actuating means to move said toggle device means in one direction or the other, means for mounting a cylindrical member for concentric rotation with said hollow output shaft, said cylindrical member having a first projection for contacting said actuating means and moving it in one direction, a second projection mounted for rotation by said angular flange for contacting said actuating means and moving it in the other direction, serration engaging means connecting said cylindrical member and first projection to said serrations, means for rotating said cylindrical member and first projection in relation to said hollow output shaft and annular flange to move said serration engaging means to override said serrations to vary the angle between said first projection and said second projection to set them at a predetermined angle.

An oscillating transmission comprising;

• an input shaft means;
• an output gear means;
• a pivoted gear came having two drive gear means thereon, a first clockwise drive gear means and a second counter-clockwise drive near means for alternate driving engagement with said output gear means to oscillate it;
• said input shaft means having a gear driving said two drive gear means, said pivoted gear care being pivotally mounted so that in one position said first clockwise drive gear means drivingly engages said output gear means and in a second position said second counter-clockwise drive gear means drivingly engages said output gear means;
• a first spring means for biasing said gear cage to bias only one of said drive gear means or the other into driving engagement with said output gear means on only one side of a first intermediate position between said driving engagement positions of said drive gear means;
• toggle means mounted for movement relative to said gear cage between a cooperating first and second limit means on said gear cage, said toggle means including second overcenter spring means for biasing said toggle means against said first or second limit means on said gear cage on either side of a second intermediate position;
• said first limit means, when biased by said second overcenter spring means through said toggle means, biasing one of said drive gear means of said gear cage into driving engagement with said output gear means along with said first spring means for rotating said output gear means in one direction;
• said second limit means, when biased by said second overcenter spring means through said toggle means, biasing the other of said drive gear means of said gear cage into driving engagement with said output gear means alone for rotating said output gear means in the other direction;
• actuating means on said toggle means;
• said output gear means having contact means to contact said actuating means to move said toggle means in one direction over said second intermediate position where the second overcenter spring means will bias said toggle means to its cooperating limit means and then bias the gear cage against the bias of said first spring means;
• when the gear cage is moved over said first intermediate position the second overcenter spring means will bias said gear cage to driving engagement changing the direction of rotation of said output gear means whereby said contact means of said output gear means will contact said actuating means on said toggle means and move said toggle means in the other direction over said second intermediate position where the second overcenter spring means will bias said toggle means to its other cooperating limit means and then bias the gear cage;
• when the gear cage is moved over said first intermediate position the first spring means will join the second overcenter spring means and bias said gear cage to driving engagement changing the direction of rotation of said output gear means.

An oscillating sprinkler unit, comprising:

• a sprinkler head mounted for rotation about a first axis;
• a drive motor;
• a reversible gear train for drivingly connecting said drive motor for driving said sprinkler head in alternate directions, comprising final drive gear means connected to said sprinkler head, shiftable drive means comprising alternately operable terminal gear means and carrier means for carrying said terminal gear means and shiftable to alternately engageable positions with said final drive gear means for driving said sprinkler head in alternate directions;
• shifting arm means pivotally mounted adjacent said carrier means and movable between alternate shifting positions by engagement with shoulder means carried by said final drive gear means, and lost motion means for connecting said shifting arm means with said carrier means for shifting said carrier means between said alternately engageable positions upon movement of said shifting arm means between said alternate shifting positions:
• first over-center biasing means for maintaining said carrier means in a selected one of said alternately engageable positions until positively shifted therefrom by said shifting arm means;
• and
• second over-center biasing means for maintaining said shifting arm means in a selected one of alternate shifting positions until engagement by said shoulder means.

An oscillating sprinkler unit, comprising:

• a sprinkler head mounted for rotation about a first axis;
• a drive motor;
• a reversible gear train for drivingly connecting said drive motor for driving said sprinkler head in alternate directions, comprising a final drive gear connected to said sprinkler head, shiftable drive means comprising alternately operable terminal gear means and carrier means for carrying said terminal gear means and shiftable to alternately engageable positions with said final drive gear for driving said sprinkler head in alternate directions;
• shifting arm means pivotally mounted adjacent said carrier means and movable between alternate shifting positions by engagement with shoulder means carried by said final drive gear means, and lost motion means for providing engagement with said carrier means for shifting said carrier means between said alternately engageable positions upon movement of said shifting arm means between said alternate shifting positions;
• first over-center biasing means for maintaining said carrier means in a selected one of said alternately engageable positions until positively shifted therefrom by said shifting arms means and
• second over-center bias inn means for maintaining said shifting arm means in a selected one of alternate shifting positions until engagement by said shoulder means.

An oscillating sprinkler unit, comprising:

• a housing having a generally cylindrical configuration with a central axis, an inlet at a lower end for attachment to a source of water and an outlet at an upper end;
• a sprinkler head mounted at said upper end for rotation about said central axis;
• a drive motor mounted in said housing for driving said sprinkler head;
• a shiftable gear train comprising terminal drive gear means, including a pair of terminal gears, and an internal gear connected to said sprinkler head, shiftable means for alternatively shifting said terminal gears alternatively into engagement with said internal gear for driving said sprinkler head in alternate directions;
• said shiftable gear train comprising a drive shaft driven by said drive motor and a drive gear mounted for rotation about a second axis offset from said first axis;
• a pivoting yoke including a carrier mounted for pivotal movement about said second axis;
• one of said terminal gears mounted on said carrier on one side of said second axis,, and the other of said terminal gears mounted on said carrier on the other side of said second axis;
• a shifting arm means mounted adjacent said yoke for pivotal movement about said first axis to alternate shifting positions by engagement with shoulder means carried by said internal gear;
• lost motion means disposed between said shifting arm and said yoke for connecting said shifting arm means to said yoke for shifting said terminal gears to alternately engageable positions;
• first over-center biasing means for maintaining said carrier in a selected one of said alternately engageable positions until positively shifted therefrom by said shifting arm means;
• and
• second over-center biasing means for maintaining said shifting arm means in a selected one of said alternate shift in positions until engagement by said shoulder means.

An oscillating sprinkler unit, comprising:

• a sprinkler head mounted for rotation about a first axis;
• drive means comprising a carrier and alternately operable terminal gear means on said carrier and shiftable with said carrier to alternately engageable driving positions within said drive means for driving said sprinkler head in alternate directions;
• shifting arm means pivotally moveable between alternate shifting positions by shoulder means carried by said drive means for shifting said carrier between said alternately engageable positions;
• and
• cam means on said carrier, and follower means slideably engaging said cam means for biasing and retaining said carrier in a selected one of said alternately engageable positions until shifted therefrom by said shifting arm means.

An oscillating sprinkler unit, comprising:

• a sprinkler head mounted for rotation about a first axis;
• a drive motor;
• a reversible gear train for drivingly connecting said drive motor to said sprinkler head for driving said sprinkler head in alternate directions, comprising a final drive gear connected to said sprinkler head shiftable drive means comprising a carrier and alternately operable terminal gear means on said carrier shiftable with said carrier to alternately engageable positions with said final drive gear for driving said sprinkler head in alternate directions;
• shifting arm means pivotally mounted adjacent said carrier and moveable between alternate shifting positions by engagement with shoulder means carried by said gear train, and lost motion means for connecting said shifting arm means with said carrier for shifting said carrier between said alternately engageable positions upon movement of said shifting arm means between said alternate shifting positions;
• and
• cam means on said carrier slideably engageable by adjacent biasing follower means for biasing and maintaining said carrier in a selected one of said alternately engageable positions until shifted therefrom by said shifting arm means.

An oscillating sprinkler unit, comprising:

• a housing having a generally cylindrical configuration with a central axis, an inlet at a lower end for attachment to a source of water and an outlet at an upper end;
• a sprinkler head mounted at said upper end for rotation about said central axis;
• a drive motor mounted in said housing for driving said sprinkler head;
• a shiftable gear train comprising terminal drive gear means including an internal gear connected to said sprinkler head, shiftable means for alternatively shifting said terminal drive gear means alternatively into engagement with said internal gear for driving said sprinkler head in alternate directions;
• said shiftable drive means comprising a drive shaft driven by said drive motor and operatively connected to a drive gear mounted for rotation about a second axis offset from said first axis;
• a pivoting carrier mounted for pivotal movement about said second axis;
• one of said terminal gear means mounted on said carrier on one side of said second axis, and the other of said drive gears mounted on said carrier on the other side of said second axis;
• a shifting arm mounted adjacent said carrier for pivotal movement about said first axis;
• lost motion means disposed between said shifting arm and said carrier for connecting said shifting arm to said carrier for shifting said terminal drive gear means to alternately engageable positions;
• first over-center biasing means for maintaining said shifting arm means in a selected one of said alternately shifting positions;
• and
• over-center cam means on said carrier slideably engageable by adjacent spring biased follower means for biasing and maintaining said carrier in a selected one of said alternate engageable positions.

An oscillating sprinkler unit, comprising:

• a sprinkler head mounted for rotation about a first axis;
• a drive motor;
• a reversible gear train for drivingly connecting said drive motor for driving said sprinkler head in alternate directions, comprising drive gear means connected to said sprinkler head, shiftable drive means comprising alternately operable terminal gear means and carrier means for carrying said terminal gear means, said shiftable drive means being shiftable to alternately engageable positions of said alternatively operable terminal gear means with said drive gear means for driving said sprinkler head in alternate directions;
• shifting arm means pivotally mounted adjacent said carrier means and movable between alternate shifting positions by engagement with contact means carried by said drive gear means, and lost motion means for connecting said shifting arm means with said carrier means for shifting said carrier means between said alternately engageable positions upon movement of said shifting arm means between said alternate shifting positions;
• first over-center biasing means for maintaining said carrier means in a selected one of said alternately engageable positions until positively shifted therefrom by said shifting arm means;
• and
• second over-center biasing means for maintaining said shifting arm means in a selected one of alternate shifting positions until engagement by said contact means.

An oscillating sprinkler unit, comprising:

• a sprinkler head mounted for rotation about a first axis;
• a drive motor;
• a reversible gear train for drivingly connecting said drive motor for driving said sprinkler head in alternate directions, comprising a drive gear connected to said sprinkler head, shiftable drive means comprising alternately operable terminal gear means and carrier means for carrying said terminal gear means, said shiftable drive means being shiftable to alternately engageable positions of said alternatively operable terminal gear means with said drive gear for driving said sprinkler head in alternate directions;
• shifting arm means pivotally mounted adjacent said carrier means and movable between alternate shifting positions by engagement with contact means carried by said final drive gear means, and lost motion means for providing engagement with said carrier means for shifting said carrier means between said alternately engageable positions upon movement of said shifting arm means between said alternate shifting positions;
• first over-center biasing means for maintaining said carrier means in a selected one of said alternately engageable positions until positively shifted therefrom by said shifting arm means;
• and
• second over-center biasing means for maintaining said shifting arm means in a selected one of alternate shifting positions until engagement by said contact means.

An oscillating sprinkler unit, comprising:

• a sprinkler head mounted for rotation about a first axis;
• rotating drive means for driving said sprinkler head in alternate directions;
• drive means including a shiftable carrier for effecting alternately engageable driving positions with said rotating drive means;
• arc control contact means;
• shift means pivotally movable by said arc control contact means for initiating movement of said carrier from one of said alternately engageable driving positions toward the other;
• first biasing means for biasing said shift means and said shiftable carrier means toward one or the other of said driving positions;
• and second biasing means for biasing said shiftable carrier into driving engagement with at least one of said alternately engageable driving positions independent of said first biasing means.

A rotary drive sprinkler device comprising:

• a housing for receiving a supply of water;
• nozzle head means for directing the flow of water from the sprinkler device, said nozzle head means having a top;
• rotatable output shaft means in said housing, said output shaft means being drivingly connected to said nozzle head means;
• a drive assembly in said housing for driving said output shaft means;
• reversing means within said housing for reversing the direction of rotation of said output shaft means to oscillate said nozzle head means;
• actuation means connected to said reversing means for operating said reversing means;
• first and second angular limit contact means within said housing for defining a desired angle of oscillation of said nozzle head means, at least one of said contact means being adjustable with respect to the other to set a desired angle of oscillation of said nozzle head means;
• said actuation means being responsive to contact with each of said first and second said angular limit contact means to actuate said reversing means to reverse the direction of rotation of said output shaft means;
• setting means at the top of said nozzle head means connected to at least one of said angular limit contact means within said housing for changing the relative angular position between said first and second angular limit contact means to increase or decrease the angle of oscillation;
• and
• indicator means at the top of said nozzle head means for providing a visual representation of a change in angle of oscillation.

A rotary drive sprinkler device comprising:

• a housing for receiving a supply of water;
• nozzle head means for directing the flow of water from the sprinkler device, said nozzle head means having a top;
• rotatable output shaft means in said housing, said output shaft means being drivingly connected to said nozzle head means;
• a drive assembly in said housing for driving said output shaft means;
• reversing means within said housing for reversing the direction of rotation of said output shaft means to oscillate said nozzle head means;
• actuation means connected to said reversing means for operating said reversing means;
• first and second angular limit contact means within said housing for defining a desired angle of oscillation of said nozzle head means, at least one of said contact means being adjustable with respect to the other to set a desired angle of oscillation of said nozzle head means;
• said actuating means being responsive to contact with each of said first and second said angular limit contact means to actuate said reversing means to reverse the direction of rotation of said output shaft means;
• rotatable setting means in said nozzle head means connected to at least one of said angular limit contact means within said housing for changing the relative angular position between said first and second angular limit contact means to increase or decrease the angle of oscillation by an amount substantially equal to the rotation of said setting means;
• and
• said nozzle head means having a top surface and said setting means being at the center of said top surface and being accessible from the exterior of said nozzle.

A rotary drive sprinkler device comprising:

• a housing for receiving a supply of water;
• nozzle head means for directing the flow of water from the sprinkler device, said nozzle head means having a top;
• rotatable output shaft means in said housing, said output shaft means being drivingly connected to said nozzle head means;
• a drive assembly in said housing for driving said output shaft means;
• reversing means within said housing for reversing the direction of rotation of said output shaft means to oscillate said nozzle head means;
• actuation means connected to said reversing means for operating said reversing means;
• first and second angular limit contact means within said housing for defining a desired angle of oscillation of said nozzle head means, at least one of said contact means being adjustable with respect to the other to set a desired angle of oscillation of said nozzle head means;
• said actuation means being responsive to contact with each of said first and second said angular limit contact means to actuate said reversing means to reverse the direction of rotation of said output shaft means;
• setting means at the top and center of said nozzle head means connected to at least one of said angular limit contact means within said housing for changing the relative angular position between said first and second angular limit contact means to increase or decrease the angle of oscillation;
• and
• indicator means at the top of said nozzle head means for providing a visual representation of the angle of oscillation which has been set.

A rotary drive sprinkler device comprising:

• a housing for receiving a supply of water;
• nozzle head means for directing the flow of water from the sprinkler device, said nozzle head means having a top;
• rotatable output shaft means in said housing, said output shaft means being drivingly connected to said nozzle head means;
• a drive assembly in said housing for driving said output shaft means;
• reversing means within said housing for reversing the direction of rotation of said output shaft means to oscillate said nozzle head means;
• actuation means connected to said reversing means for operating said reversing means;
• first and second angular limit contact means for defining a desired angle of oscillation of said nozzle head means, at least one of said contact means being adjustable with respect to the other to set a desired angle of oscillation of said nozzle head means;
• said actuation means being responsive to contact with each of said first and second said angular limit contact means to actuate said reversing means to reverse the direction of rotation of said output shaft means;
• setting means at the top of said nozzle head means for changing the relative angular position between said first and second angular limit contact means to increase or decrease the angle of oscillation, said setting means being above said angular limit contact means and being connected to at least one of said angular limit contact means;
• and
• indicator means at the top of said nozzle head means for providing a visual representation of a change in angle of oscillation.

A rotary drive sprinkler device comprising:

• a housing for receiving a supply of water;
• nozzle head means for directing the flow of water from the sprinkler device, said nozzle head means having a top;
• rotatable output shaft means in said housing, said output shaft means being drivingly connected to said nozzle head means;
• a drive assembly in said housing for driving said output shaft means;
• reversing means within said housing for reversing the direction of rotation of said output shaft means to oscillate said nozzle head means;
• actuation means connected to said reversing means for operating said reversing means;
• first and second angular limit contact means for defining a desired angle of oscillation of said nozzle head means, at least one of said contact means being adjustable with respect to the other to set a desired angle of oscillation of said nozzle head means;
• said actuating means being responsive to contact with each of said first and second said angular limit contact means to actuate said reversing means to reverse the direction of rotation of said output shaft means;
• rotatable setting means in said nozzle head means for changing the relative angular position between said first and second angular limit contact means to increase or decrease the angle of oscillation by an amount substantially equal to the rotation of said setting means, said rotatable setting means being above said angular limit contact means and being connected to at least one of said angular limit contact means;
• and
• said nozzle head means having a top surface and said setting means being at the center of said top surface and being accessible from the exterior of said nozzle.

A rotary drive sprinkler device comprising:

• a housing for receiving a supply of water;
• nozzle head means for directing the flow of water from the sprinkler device, said nozzle head means having a top;
• rotatable output shaft means in said housing, said output shaft means being drivingly connected to said nozzle head means;
• a drive assembly in said housing for driving said output shaft means;
• reversing means within said housing for reversing the direction of rotation of said output shaft means to oscillate said nozzle head means;
• actuation means connected to said reversing means for operating said reversing means;
• first and second angular limit contact means for defining a desired angle of oscillation of said nozzle head means, at least one of said contact means being adjustable with respect to the other to set a desired angle of oscillation of said nozzle head means;
• said actuation means being responsive to contact with each of said first and second said angular limit contact means to actuate said reversing means to reverse the direction of rotation of said output shaft means;
• setting means at the top and center of said nozzle head means for changing the relative angular position between said first and second angular limit contact means to increase or decrease the angle of oscillation, said setting means being above said angular limit contact means and being connected to at least one of said angular limit contact means;
• and
• indicator means at the top of said nozzle head means for providing a visual representation of the angle of oscillation which has been set.

An oscillating sprinkler unit, comprising:

• a sprinkler head mounted for rotation about a first axis;
• drive means including a shiftable carrier for alternately engageable driving positions with rotating drive means for driving said sprinkler head in alternate directions;
• shifting arm means pivotally movable by arc control contact means for shifting said carrier towards one or the other of said alternately engageable driving positions;
• and biasing means for placing said shiftable carrier in driving engagement and for retaining said shiftable carrier in a selected one of said alternately engageable diving positions until shifted therefrom by said shifting arm means.