Automatic record player
AssigneeJames T. Dennis
InventorsJames T. Dennis, George Kolomayets
Life of this patent
Estimating the term…
Abstract
A tone arm moving mechanism is provided wherein the tone arm is normally moved over the lead in groove and lowered to the record during the last half of a normal record changing cycle. Means are then provided which are operative during a last record shut-off cycle for lowering the tone arm into a retaining means on the rest post, said retaining means being effective to restrain the tone arm from inward movement during the remaining portion of the last record shut-off cycle.
Claims11
In an automatic record player, the combination of, a turntable, a tone arm, means for mounting said tone arm for rotation about a fixed point beyond said turntable, a main cycling gear, cam means carried by said gear, means for rotating said gear one revolution during an automatic cycle, a rest post for said tone arm, tone arm retaining means positioned to be engaged by said tone arm, means controlled by movement of said gear during the first half of an automatic cycle for moving said tone arm outwardly into engagement with said rest post, means controlled by movement of said gear during the last half of an automatic cycle for moving said tone arm inwardly to a point over the lead-in groove of a record positioned on said turntable, means responsive to movement of said cam means during an automatic cycle for raising and lowering said tone arm, and means operable independently of said cam means during an automatic shutoff cycle for lowering said tone arm into engagement with said tone arm retaining means while said tone arm is in engagement with said rest post, said tone arm retaining means being effective to restrain said tone arm from inward movement during the remaining portion of said automatic shutoff cycle.
In an automatic record player, the combination of, a turntable, a tone arm, means for mounting said tone arm for rotation about a fixed point beyond said turntable, a main cycling gear, means for rotating said gear one revolution during an automatic cycle, a member positioned beyond the edge of said turntable, tone arm retaining means positioned to be engaged by said tone arm, and automatic shutoff means controlled by movement of said gear during the first half of an automatic shutoff cycle for raising said tone arm and moving said tone arm outwardly into engagement with said member, said automatic shutoff means being operative during approximately the first half of said automatic shutoff cycle to lower said tone arm into engagement with said tone arm retaining means after said tone arm has been moved into engagement with said member, said tone arm retaining means being effective to restrain said tone arm from inward movement during the last half of said automatic shutoff cycle.
In an automatic record player, the combination of, a turntable, a tone arm, means for mounting said tone arm for rotation about a fixed point beyond said turntable, a main cycling gear, means for rotating said gear one revolution during an automatic cycle, tone arm retaining means positioned to be engaged by said tone arm, and automatic shutoff means responsive to movement of said main cycling gear for first moving said tone arm outwardly beyond the edge of a record positioned on said turntable and then lowering said tone arm into engagement with said tone arm retaining means during approximately the first half of an automatic shutoff cycle, said tone arm retaining means acting to restrain said tone arm against inward movement during the remainder of said automatic shutoff cycle while permitting vertical movement of said tone arm so that said tone arm may be lifted off of said tone arm retaining means after said automatic shutoff cycle has been completed.
In an automatic record player, the combination of, a turntable, a tone arm, means for mounting said tone arm for rotation about a fixed point beyond said turntable, a main cycling gear, means for rotating said gear one revolution during an automatic cycle, tone arm retaining means positioned to be engaged by said tone arm, and automatic shutoff means responsive to movement of said main cycling gear for first moving said tone arm outwardly beyond the edge of a record positioned on said turntable and then lowering said tone arm into engagement with said tone arm retaining means during approximately the first half of an automatic shutoff cycle, said tone arm retaining means acting to restrain said tone arm against inward movement during the remainder of said automatic shutoff cycle.
In an automatic record player the combination of, a turntable, a tone arm, means for mounting said tone arm for rotation about a fixed point beyond said turntable, a main cycling gear, means for rotating said gear one revolution during an automatic cycle, tone arm support means for supporting said tone arm beyond said turntable during periods when said automatic record player is inactive, means operative during a first automatic cycle for energizing said gear rotating means and moving said tone arm upwardly off of said tone arm supporting means, moving said tone arm inwardly to position said tone arm at a point over the lead-in groove of a record on said turntable and moving said tone arm downwardly into engagement with said lead-in groove, and automatic shutoff means responsive to movement of said gear during an automatic shutoff cycle for first moving said tone arm outwardly beyond the edge of a record positioned on said turntable and then downwardly into engagement with said tone arm supporting means during approximately the first half of said automatic shutoff cycle, said tone arm supporting means acting independently of said tone arm positioning means to restrain said tone arm against inward movement during the remainder of said automatic shutoff cycle, and means for de-energizing said gear rotating means near the end of said automatic shutoff cycle.
In an automatic record player, the combination of, a turntable, a tone arm, means for mounting said tone arm for rotation about a fixed point beyond said turntable, a main cycling gear, means for rotating said gear one revolution during an automatic cycle, tone arm retaining means positioned to be engaged by said tone arm, first and second cam means carried by said gear, means responsive to movement of sald first cam means during a first automatic cycle for lowering said tone arm into engagement with a record on said turntable, and means responsive to movement of said second cam means for lowering said tone arm into engagement with said tone arm retaining means during the first half of an automatic shutoff cycle, said tone arm retaining means being effective to restrain said tone arm from inward movement during the last half of said automatic shutoff cycle.
In an automatic record changer, the combination of, a turntable, a tone arm, means for mounting said tone arm for rotation about a fixed point beyond said turntable, a main cycling gear, means for rotating said gear one revolution during an automatic cycle, tone arm retaining means positioned to be engaged by said tone arm, a tone arm lift rod having a horizontal portion and a right angle end portion, bearing means for mounting said right angle end portion for rotation about a vertical axis, means responsive to rotation to said lift rod about said axis for raising and lowering said tone arm, first means responsive to movement of said gear during a first automatic cycle for rotating said lift rod about said vertical axis so that said tone arm is raised during the initial portion of said first automatic cycle and is lowered into engagement with a record on said turntable during the final portion of said first automatic cycle, and second means responsive to movement of said gear during an automatic shutoff cycle for rotating said lift rod about said vertical axis so that said tone arm is lowered into engagement with said tone arm retaining means during the first half of said automatic shutoff cycle, said tone arm restraining means being operative to restrain said tone arm from inward movement during the remaining portion of said automatic shutoff cycle.
In an automatic record changer, the combination of, a turntable, a tone arm, means for mounting said tone arm for rotation about a fixed point beyond said turntable, a main cycling gear, means for rotating said gear one revolution during an automatic cycle, tone arm retaining means positioned to be engaged by said tone arm, a tone arm lift rod having a horizontal portion and a right angle end portion, bearing means for mounting said right angle end portion for rotation about a vertical axis, means responsive to rotation of said lift rod about said axis for raising and lowering said tone arm, means including first cam means carried by said gear for rotating said lift rod about said vertical axis in the direction to raise said tone arm during the initial portion of both a first automatic cycle and an automatic shutoff cycle, means including second cam means carried by said gear for rotating said lift rod in the direction to lower said tone arm into engagement with a record on said turntable during said first automatic cycle, and means including third cam means carried by said gear for rotating said lift rod about said vertical axis in the direction to lower said tone arm into engagement with said tone arm retaining means during the first half of said automatic shutoff cycle, said tone arm retaining means being operative to restrain said tone arm from inward movement during the remaining portion of said automatic shutoff cycle.
Dependencies are inferred from the claim text.