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Browse Prior Art Database

Thread Locking with Wire

IP.com Disclosure Number: IPCOM000052492D
Original Publication Date: 1981-Jun-01
Included in the Prior Art Database: 2005-Feb-11
Document File: 2 page(s) / 33K

Publishing Venue

IBM

Related People

Whitehead, K: AUTHOR

Abstract

In constructing actuators for print wires used in a wire matrix printer the back end includes a backstop which is adjusted so that the movement of the wire is a very precise amount. Because of the constant pounding of the armature against the backstop, means must be provided to effectively secure the backstop so that it does not unscrew and thereby change the distance traveled by the wire.

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Thread Locking with Wire

In constructing actuators for print wires used in a wire matrix printer the back end includes a backstop which is adjusted so that the movement of the wire is a very precise amount. Because of the constant pounding of the armature against the backstop, means must be provided to effectively secure the backstop so that it does not unscrew and thereby change the distance traveled by the wire.

Referring to alternate embodiments in Figs. 1 and 2, the backstop 10 male threaded part has a cross-drilled hole 12 or slot therein. The female part has a cross hole 14 from one side through one side of the threads or a notch 15 on the entry end. When the cross hole 12 in the male part is aligned with the cross hole 14 or notch 15 in the female part, a piece of steel music wire 16 or possibly a non-metallic fiber or other material is inserted. By rotating male part 10 or female part 11 until the desired position is reached, the wire 16 becomes caught between the mating parts and provides sufficient interference to avoid the unintentional loosening of the male part 10. The diameter of wire 16 may be selected to be one-half of the thread pitch and its length may be selected to be the circumference of the male part 10. The cross hole 12 in the male part 10 should be small enough to pull the wire into the threads rather than allowing the wire 16 to slip out.

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