| 摘要 |
1,224,910. Dictation machines. INTERNATIONAL BUSINESS MACHINES CORP. 2 Oct., 1969 [14 Oct., 1968], No.- 48403/69. Heading G5R. The Specification describes and claims the manner in which a belt record is loaded into and ejected from a dictation machine generally described in Specification 1,224,909. A lever (10, Figs. 1,4, not shown), is moved to the right to position a belt gripper 50 to receive a belt 2 and in so doing retracts one of two rollers (63, 64) over which the belt is eventually positioned. The belt is inserted between jaws 53, 54 and pivots the upper jaw to free it from a rack 59 which would normally prevent the gripper being retracted. The lever (10) is returned to the left to retract the gripper until the jaw 53 engages a stop 62 to release the belt and to restore the roller (63) to its operational position. The belt has an aperture (2a) to provide for repeatable registration and the head is driven to record a helical track. The belt is ejected by moving lever (10) to the right until the gripper engages a stop 66, Fig. 7b, to cause the upper jaw to initially grip the belt and prevent its complete ejection after which spring 69 returns the gripper slightly to release the belt for manual withdrawal. |
