| 摘要 |
1534058 Disc changing in dictation apparatus INTERNATIONAL BUSINESS MACHINES CORP 10 March 1976 [17 March 1975] 09465/76 Heading G5R In a disc dictation machine having a loader carrier 10 movable to effect a disc change cycle by ejecting a first disc from a record/playback station into an unload station and simultaneously transferring a second disc from a load station into the record/playback station, a mechanism is provided to disengage the disc from a spindle 31 at the record/playback station, the mechanism comprising a lever 20 pivoted at 21 and biased by a spring 22 to an inoperative position, determined by an adjustable stop 26, in which its one end (right end Fig. 2) is out of contact with spindle 31, a cam 23 on the other end of lever 20 being engaged by part 10c of loader carrier 10, during movement thereof in one direction in a disc change cycle, to rotate the lever 20 so that its one end engages and depresses the spindle 31 out of engagement with the disc at the record/playback station, a latch 24 on lever 20 thereby being biased by a spring 25 to a position, Fig. 3 (not shown), locking the spindle 31 in the depressed position, and the spindle 31 being released from this position as the loader carrier 10 moves in the opposite direction and a part 10b thereof engages and releases the latch 24. The loader carrier is as disclosed in Specification 1,534,057, and is used with discs of the type disclosed in Specification 1,379,354 the spindle 31 being as in Specification 1,441,080. Said one end of lever 20 has a finger 27 to engage a flange 30 on spindle 31 to effect depression thereof, and a finger 28 with a tooth 29. On release of spindle 31 from its depressed position, springs (90), (93), Fig. 3, return it to its operative position in which an orientation member (35) on spindle 3 engages in a slot in the disc to ensure correct angular positioning thereof. If member (35) does not immediately become engaged on spindle return, tooth 29 engages a lug 32 on flange 30 to prevent rotation of spindle 31 so that rotation of the disc by a peripheral drive can bring member (35) and the disc slot into registration whereupon engagement between the two is effected by the spring (90), (93) and lug 32 is released from tooth 29.
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