| 摘要 |
1527481 Slide projectors PENTACON DRESDEN KAMERA-UND KINOWERKE VEB 2 Feb 1977 [4 Feb 1976] 04264/77 Heading G2J In a slide projector, slide changing and magazine movement are driven by a single motor on depression of a knob 17, which rocks levers 14, 16, thus frictionally engaging bevel gears 2, 3. Gear 2 is driven by a motor, and gear 3 drives by a belt 4 a toothed gear 5 driving wheel 6, which has a set of studs 6b driving a toothed wheel 7b fast with a crank 8 whereby the slide-changing members 11a, 11b are moved. A disc 7a, coaxial with but not connected to wheel 7b, has slots engaged by a pin 6a, so that a gear 7c, fast with disc 7a, is intermittently moved to drive the magazine. When knob 17 is depressed, a lever 13 is moved to release pin 6a and to hold levers 14, 16 displaced so that operation continues after knob 17 is released. |
