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Forward and Reversing Clutch

IP.com Disclosure Number: IPCOM000090789D
Original Publication Date: 1969-Jul-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 3 page(s) / 79K

Publishing Venue

IBM

Related People

Shepard, JE: AUTHOR

Abstract

With this clutch, forward or reverse direction of rotation of the output shaft and neutral or braking mode of operation are obtained by slight movement applied to a control lever. Output shaft 1 extends from both sides of the clutch to accommodate output devices, not shown, and has fixedly attached to it output collar 2. Threaded over collar 2 and of sufficient size to grip the outside diameter of collar 2 is clutch spring 3. The latter extends on either side of collar 2 a sufficient distance to accept 7A and 8B. The latter one on each side of collar 2, turn freely on shaft 1, and are of sufficient size and small enough to allow just enough clearance to turn inside of spring 3.

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Forward and Reversing Clutch

With this clutch, forward or reverse direction of rotation of the output shaft and neutral or braking mode of operation are obtained by slight movement applied to a control lever. Output shaft 1 extends from both sides of the clutch to accommodate output devices, not shown, and has fixedly attached to it output collar 2. Threaded over collar 2 and of sufficient size to grip the outside diameter of collar 2 is clutch spring 3. The latter extends on either side of collar 2 a sufficient distance to accept 7A and 8B. The latter one on each side of collar 2, turn freely on shaft 1, and are of sufficient size and small enough to allow just enough clearance to turn inside of spring 3.

Control collar 4A, 4B surrounds spring 3 with a clearance between its inside diameter and the outside diameter of such spring. The outside diameter of collar 4A, 4B is grooved to accept cam follower 11 on fork 12. Collar 4A, 4B carries slots 3A and 3B for accepting tabs bent upon both ends of spring 3. Screw 6 adjusts slots 3A and 3B in relation to each other around the periphery of collar 4A, 4B. That is, while spring 3 fits very tight and grips collar 2 in the vicinity of spring turns 3C, clearance between spring 3 and clutch hub 7A and 8B is adjusted by rotating collar 4A relative to collar 4B after loosening set screw 6.

Friction surfaces 5A and 5B are on each end of collar 4A, 4B, which surfaces become engaged with a hub 7A or 8B on the side toward which collar 4A, 4B is moved by action of follower 11 and fork 12. Thus, surfaces 5A and 5B on cone- shaped ends of collar 4A and 4B match cone-shaped grooves in bevel gears 7 and 8 and serve as the control clutch between collar 4A, 4B and hubs 7A and 8B. Bevel gears 7, 8, and 9, running similar to a differential, are used to impart opposite direction of rotation to hubs 7A and 8B. Bevel gear 9 is also used as an idle gear. Flywhe...