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Self-Reversing, Constant Velocity Reciprocating Drive

IP.com Disclosure Number: IPCOM000097392D
Original Publication Date: 1962-Nov-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 49K

Publishing Venue

IBM

Related People

Gustin, RM: AUTHOR [+2]

Abstract

A reciprocating element 10 forms a closed gear track having parallel straight rack portions 11 and 12 connected by annular gear portions 13 and 14. Each has inwardly facing gear teeth 15. A back plate 16 connected to the gear portions 11...14 has a support bearing 17 slideably engaging bearing block 18 fixedly mounted on stationary frame member 19. A continuous groove 20 forms a guide track in the face of plate 16. The bottom portion of element 10 is provided near opposite ends with cams 21 and 22.

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Self-Reversing, Constant Velocity Reciprocating Drive

A reciprocating element 10 forms a closed gear track having parallel straight rack portions 11 and 12 connected by annular gear portions 13 and 14. Each has inwardly facing gear teeth 15. A back plate 16 connected to the gear portions 11...14 has a support bearing 17 slideably engaging bearing block 18 fixedly mounted on stationary frame member 19. A continuous groove 20 forms a guide track in the face of plate 16. The bottom portion of element 10 is provided near opposite ends with cams 21 and 22.

Translatory motion is imparted to element 10 by drive member comprising a stationary, rotatable shaft 23 and drive gear 24 attached to the end thereof.

Shaft 27, connected at one end to frame 28 and having the other end within groove 20 in back plate 16, rotatably supports idler gears 25 and 26 in engagement with drive gear 24 and teeth 15 of element 10. Intermediate the ends of element 10 is a direction latch 29 pivotally mounted at one end by stationary bracket 30. The upper surface of latch 29 is keyed to receive the ends of upper and lower arms 31 and 32 of frame 28. Spring 33 biases latch 29 upwardly into the path of cams 21 and 22 for engagement with direction arms 31 and 32.

Reciprocation of element 10 occurs when shaft 23, rotating continuously in one direction, rotates drive gear 24 and idler gears 25 and 26. Because shaft 23 is stationary and with latch 29 holding gear frame 28 against rotation, idler gear...