Disc record player having shutoff switch actuating apparatus

Dynamic information storage or retrieval – With particular cabinet structure – Slotted for edgewise insertion of storage disc

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Details

369 79, 369243, G11B 1910, G11B 1700, G11B 100

Patent

active

044357990

ABSTRACT:
The player has a record handling mechanism which consists of a sequencing cam for coordinating the operations of a record lifting finger and a set of record receiving pads. To transfer a record from the record receiving pads to a turntable for playback, the record lifting finger is raised through a slot in the turntable to lift the record to a position above the receiving pads, the receiving pads are retracted out of the way, and then the record lifting finger is withdrawn to a location beneath the turntable to deposit the record on the turntable. To transfer the record back to the record receiving pads for retrieval, the sequence of operations is basically reversed. It is desirable to hold the registration between the turntable slot and the record lifting finger when the player is turned off. To this end a shutoff switch actuating mechanism is provided. When the player is turned off, the sequencing cam is driven in a direction that raises the record lifting finger through the turntable slot. The sequencing cam has a rib which engages and deflects a pivotally-mounted shutoff switch actuating lever to operate a shutoff switch to turn off a motor driving the sequencing cam. The location of the rib on the sequencing cam is such that the shutoff switch is actuated when the record lifting finger is occupying the turntable slot to lock the turntable in place. The shutoff switch actuating lever is retracted when a record is inside the player to prevent the rib from engaging the actuating lever to allow the normal record transfer operation without hindrance from the shutoff switch actuating mechanism.

REFERENCES:
patent: 4191381 (1980-03-01), Stave
patent: 4352174 (1982-09-01), Tajima et al.
patent: 4384352 (1983-05-01), Saito et al.

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