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US 4,377,909 AGranted
Reciprocal saw attachment for power output shaft and portable drill vise
OwnerNeil F. Keenerinventor
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OwnerNeil F. Keenerinventor
Estimating the term…
Driven and idle sprocket wheels are journaled in aligned relation for rotation about spaced apart parallel axes and a chain is trained over the sprocket wheels. The sprocket wheels are journaled from a support structure and the latter includes an elongated support member guidingly supported therefrom for rectilinear reciprocation along a path generally paralleling the reaches of the chain extending between the sprocket wheels. The support member includes structure for supporting a hacksaw blade or other similar elongated cutting tool therefrom in position generally paralleling the support member and also includes laterally extending guide structure supported therefrom defining an elongated slot extending generally normal to the support member and the chain includes a laterally projecting pin rotatably and slidably received in the guide structure slot, whereby orbital movement of the chain supported pin about the sprocket wheels will effect longitudinal reciprocation of the support member in a manner such that the support member is initially gradually accelerated to a predeterminined speed of movement in a first direction, thereafter maintained at that speed of movement in the first direction and subsequently gradually decreased in speed before being gradually accelerated in the opposite direction. Clamp structure is provided for supporting a portable drill in position for driving connection of its output shaft with one of the sprocket wheels.
A reciprocal saw accessory for a tool including a rotary output shaft, said accessory including support structure having guide means defining guide portions spaced along a predetermined path, an elongated support member having longitudinally spaced portions thereof guidingly supported from said guide portions for rectilinear reciprocation of said support member relative to said support structure, said support member including tool mounting structure for supporting an elongated cutting tool therefrom with said tool paralleling said path, a pair of rotary input and idle wheels journaled from said support structure for rotation about parallel axes spaced apart along said path, an endless tension member trained about said wheels, one of said wheels including means for drivingly connecting a rotary power output shaft thereto, first pin means and second slot defining means, one of said first and second means being carried by said tension member and the other of said first and second means being carried by said support member with said first and second means defining a pin and slot connection between said tension member and support member for reciprocal movement of the latter responsive to said tension member orbiting about said wheels.
A reciprocal saw accessory for a tool including a rotary output shaft, said accessory including support structure having guide means defining guide portions spaced along a predetermined path, an elongated support member having longitudinally spaced midportions thereof guidingly supported from said guide portions for rectilinear reciprocation of said support member relative to said support structure, said support member including tool mounting structure for supporting an elongated cutting tool therefrom with said tool paralleling said path, a pair of rotary input and idle shafts journaled from said support structure for rotation about parallel axes spaced apart along said path, a pair of input and idle wheels mounted on said shafts, an endless tension member trained about said wheels, one of said wheels including means for drivingly connecting a rotary power shaft thereto, first pin means and second slot defining means, one of said first and second means being carried by said tension member and the other of said first and second means being carried by said support member with said first and second means defining a pin and slot connection between said tension member and support member for reciprocal movement of the latter responsive to said tension member orbiting about said wheels.
Dependencies are inferred from the claim text.