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Selection Interlock and Armature Restore Mechanism

IP.com Disclosure Number: IPCOM000083927D
Original Publication Date: 1975-Aug-01
Included in the Prior Art Database: 2005-Mar-01
Document File: 2 page(s) / 30K

Publishing Venue

IBM

Related People

Boyatt, RG: AUTHOR [+2]

Abstract

Where it is desirable to select one armature from a group of armatures and at the same time insure that one and only one armature is selected for activation such as by an electromagnet, a scheme for interlocking the armatures to prevent multiple selections is necessary.

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Selection Interlock and Armature Restore Mechanism

Where it is desirable to select one armature from a group of armatures and at the same time insure that one and only one armature is selected for activation such as by an electromagnet, a scheme for interlocking the armatures to prevent multiple selections is necessary.

A film tape of flexible material 10 is stretched across a block which contains a series of notches 12. The armatures 14 are positioned above the tape 10 such that in their retracted position, they do not cause the tape to deviate from a straight line path. Alternate arrangements are possible where the tape path is not a straight line.

The tape is maintained taut by a tension spring 16 acting on a bell crank lever
18. A second arm of the bell crank 20 is provided to stop the bell crank from rotating in response to tension on tape 10 and against tension on spring 16, thereby only allowing enough slack in the tape 10 to allow one armature 14 to enter its respective notch 12.

Where more than one group of armatures is utilized and where a single armature in each group may be selected individually and simultaneously, it is necessary to ground or fix the tape 10 at an intermediate point 22 by a retaining clamp or retaining means 24. The second section of tape 10 is likewise acted upon by an identical bell crank and spring arrangement to maintain tension. Upon the actuated armature 14 being allowed to restore, tension spring 16 acting through arm 18 of th...