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Step Down Counter

IP.com Disclosure Number: IPCOM000089902D
Original Publication Date: 1968-Dec-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 60K

Publishing Venue

IBM

Related People

Kruspe, HR: AUTHOR

Abstract

This mechanical step-down counter comprises rack assembly 10 which is movably mounted by three spaced rollers 11, 12, and 13 on elongated and stationary mounting bar 14. Assembly 10 includes handle assembly 15 and elongated rack 16 which is engaged by nose 17 of escapement pawl 18 having a slot 19. Pawl 18 is mounted for limited longitudinal and pivotal movement from a stationary frame member while rack 16 is urged in the direction of arrow 20 by elongated spring 21. To position rack 16 relative to pawl 18, the operator squeezes handle assembly 15. A transfer linkage is operative to rotate torque bar 23 in the direction of arrow 24 so that ledge 25 engages tab 26 and lifts nose 17 of pawl 18 from the escapement rack. Assembly 10 can then be freely moved by the operator in either direction to any selected position.

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Step Down Counter

This mechanical step-down counter comprises rack assembly 10 which is movably mounted by three spaced rollers 11, 12, and 13 on elongated and stationary mounting bar 14. Assembly 10 includes handle assembly 15 and elongated rack 16 which is engaged by nose 17 of escapement pawl 18 having a slot 19. Pawl 18 is mounted for limited longitudinal and pivotal movement from a stationary frame member while rack 16 is urged in the direction of arrow 20 by elongated spring 21. To position rack 16 relative to pawl 18, the operator squeezes handle assembly 15. A transfer linkage is operative to rotate torque bar 23 in the direction of arrow 24 so that ledge 25 engages tab 26 and lifts nose 17 of pawl 18 from the escapement rack. Assembly 10 can then be freely moved by the operator in either direction to any selected position.

Depression of start bar SB by the operator actuates latch 27 to operate switches 28 and 29. Energization of these switches results in reciprocation of copy bed 30 in the plane indicated by arrow 31. Each time bed 30 approaches the end of a forward stroke, trip lever 32 carried by this member operates lift link 33 to pivot the nose of pawl 18 from engagement with rack 16. The rack escapes to the left by one tooth and the pawl is pulled to the right by spring 34 due to slot 19 to a position where it is pivoted back into the rack to engage the next tooth.

This series of operations is repeated until the next to the last tooth in rack 16 is...