Browse Prior Art Database

Two Position Arm Control

IP.com Disclosure Number: IPCOM000079100D
Original Publication Date: 1973-May-01
Included in the Prior Art Database: 2005-Feb-26
Document File: 2 page(s) / 59K

Publishing Venue

IBM

Related People

Cialone, DR: AUTHOR

Abstract

Pivoted arm 10 is held either in its full line position, as shown, or in its broken line position, under the control of latch 11 as selected from either of a pair of movable inputs 12 and 13, respectively. Inputs 12 and 13 are selectively operated by control mechanism, not shown, to temporarily move leftwardly during a cyclic rotation of shaft 14. Selection of input 13 displaces latch 11 leftwardly, to align a ledge 15 thereon with an edge 16 of a slot 17 in an oscillating bail 18 that is reciprocated by cam 19 on shaft 14. Bail 18 thus pulls latch 11 forwardly causing its surface 11a to be trapped leftwardly by spring end 31. Latch 11 is connected through pin 20 to projection 21 of arm 10, to pivot arm 10 toward its broken line position.

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Two Position Arm Control

Pivoted arm 10 is held either in its full line position, as shown, or in its broken line position, under the control of latch 11 as selected from either of a pair of movable inputs 12 and 13, respectively. Inputs 12 and 13 are selectively operated by control mechanism, not shown, to temporarily move leftwardly during a cyclic rotation of shaft 14. Selection of input 13 displaces latch 11 leftwardly, to align a ledge 15 thereon with an edge 16 of a slot 17 in an oscillating bail 18 that is reciprocated by cam 19 on shaft 14.

Bail 18 thus pulls latch 11 forwardly causing its surface 11a to be trapped leftwardly by spring end 31. Latch 11 is connected through pin 20 to projection 21 of arm 10, to pivot arm 10 toward its broken line position.

Near the end of forward travel of latch 11, ledge 22 on projection 21 passes over tooth 23 of retaining latch 24, and leaf spring 25 protects tooth 23 upwardly to trap ledge 22 in its displaced position. Return movement of bail 18 thus leaves arm 10 and latch 11 in their forwardly displaced position. Removal of the input signal from input 13 allows latch 11 to restore rightwardly, so as not to be repeatedly engaged by bail 18 during subsequent operation thereof. Tape 26 can be manipulated by other mechanism, not shown, while arm 10 is retained in its thus displaced position.

When it is desired to return arm 10 to its full line position input 12 is temporarily moved leftwardly to displace control link 27...