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Browse Prior Art Database

Incrementing Drive

IP.com Disclosure Number: IPCOM000094100D
Original Publication Date: 1966-May-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 44K

Publishing Venue

IBM

Related People

Eichelsheim, R: AUTHOR

Abstract

Shaft 1 is rotated incrementally by reciprocating drive member 2. The latter acts on shaft 1 through sprocket ad chain arrangement 3 ad 4. The transverse movements necessary for teeth 5 of member 2 to engage or disengage from chain 4 are performed solely by the latter. This simplifies the movement of member 2.

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Incrementing Drive

Shaft 1 is rotated incrementally by reciprocating drive member 2. The latter acts on shaft 1 through sprocket ad chain arrangement 3 ad 4. The transverse movements necessary for teeth 5 of member 2 to engage or disengage from chain 4 are performed solely by the latter. This simplifies the movement of member 2.

Chain 4 is made of reinforced nylon and is trained about sprocket 3 ad idler pulley 6, journaled on pivotable arm 7. By tightening screw 8, chain 4 is tensioned sufficiently, while still allowing a slight vertical movement of the stretched part of it. Sprocket 3 is secured to shaft 1 ad to notched disk 9, cooperating with sprig-loaded detent Pin 10.

Member 2 has shaft 11 which is supported for axial sliding movement in bearings 12. The free end of shaft 11 carries cam follower 13. This is periodically driven to the right by cam 14 on rotating shaft 15. Spring 16 urges member 2 to the left to hold follower 13 in contact with the cam. Member 2 is provided with a number of teeth 5 for engagement with a corresponding number of apertures in chain 4. The plurality of teeth 5 ensures a better distribution of the loading force. The sawtooth shape of teeth 5 urges chain 4 down, when member 2 moves to the left, until chain 4 snaps back into engagement with teeth 5. When member 2 moves to the right, the straight edges of teeth 5 exert a sufficient pull on chain 4 to overcome the force of detent 10 ad to increment shaft 1.

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