| 摘要 |
925,363. Selective printing. INTERNATIONAL BUSINESS MACHINES CORPORATION. July 29, 1960 [Aug. 24, 1959], No. 26545/60. Class 100 (4). [Also in Group XXIV] A type-wheel 1 is quickly released from its mounting by a spring-urged press-button 20 slidably mounted in resilient fingers 16 attached to a driving shaft. When the button is depressed, the wheel 1 may be pulled off the shaft as the fingers may now move towards the axis by the camming action of a bevel 18 in the central recess of the type-wheel. Specification 842,328 is referred to. |
