| 摘要 |
<p>995,135. Toothed gearing; couplings. AMERICAN MACHINE & FOUNDRY CO. Sept. 18, 1961 [Sept. 30, 1960], No. 33391/61. Headings F2Q and F2U. [Also in Division B6] In a label cutting machine (see Division B6) a feed roller 42 is driven intermittently by differential gearing having a continuously driven bevel gear 78 freely rotatable on a shaft 72, a bevel gear 82 secured to the shaft 72, and a segmental gear 84 on a hub 86 freely mounted on shaft 72. A pinion 88 carried by the hub 86 engages gears 82, 78. The segmental gear 84 is oscillated by a gear segment 90 on an arm 92, Fig. 6 (not shown) rocked by a cam 98. During oscillating movement of the gear 84, Fig. 5, in one direction the pinion 88 transmits rotary motion to the gear 82 and shaft 72 and in the opposite direction the shaft 72 is stationary. Couplings.-A reel core 283 is clamped to an arbor by fins 228, each of which is provided at one end with studs 284, 286 engaging in a ring 270 and in an adjustable ring 272 which can be clamped to the ring 270 by thumb screws 278. With the thumb screws loosened, and on rotating the reel clockwise, the upper edge of at least one fin engages the inner surface of the core 283 and pivots about the stud 284, and since the fins are interconnected by the ring 272 the other pivot simultaneously to clamp the reel core 283 to the arbor. The thumb screws are then tightened to lock the fins in place.</p> |
