Apparatus for facilitating carriage return in video disc player

Details Apparatus for facilitating carriage return in video disc player Apparatus for facilitating carriage return in video disc player

1978-11-29

1980-03-04

Shepperd, John W.

Undertaking

274 13R, 274 14, G11B 336, G11B 1704

Patent

active

041913817

ABSTRACT:
To load a record into a player, such as a video disc player, a record caddy is inserted into the player housing through an input slot. The player is equipped with rails for guiding caddy insertion along a path. A record extracting mechanism mounted in the player removes the enclosed record from the caddy during subsequent caddy withdrawal, whereby the record is retained in the player. A turntable is provided for centering and rotatably supporting the retained record. The player is further equipped with a second set of rails for guiding a pickup carriage along a second path disposed substantially parallel to the caddy path. The location of the carriage path relative to the caddy path is such that the caddy engages the carriage during caddy insertion into the housing. A translating apparatus drives the pickup carriage along the carriage guiding rails away from a starting position and in a direction opposite to the direction of caddy insertion at a speed correlated to the speed of rotation of the turntable during playback. A torsion spring coupled to the carriage stores energy during mechanical translation of the carriage in the aforementioned opposite direction. The coupling between the torsion spring and the carriage is such that the stored energy applies a force to the carriage in a sense urging its travel in the direction of caddy insertion, whereby the applied force aids restoration of the carriage to the starting position when the carriage is at a position other than at the starting position during a caddy insertion.

REFERENCES:
patent: 619916 (1899-02-01), Williams
patent: 2866647 (1958-12-01), Somers
patent: 3369813 (1968-02-01), Nagashima et al.
patent: 3954272 (1976-05-01), Leedom
patent: 4113262 (1978-09-01), DeStephanis

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