Browse Prior Art Database

Wire Cable Tension Monitoring Device

IP.com Disclosure Number: IPCOM000087982D
Original Publication Date: 1977-Apr-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 46K

Publishing Venue

IBM

Related People

Snell, SA: AUTHOR

Abstract

This device provides a simple means for establishing initial tension in a motion transmission cable and a simple means for checking and adjusting cable tension during machine life.

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Wire Cable Tension Monitoring Device

This device provides a simple means for establishing initial tension in a motion transmission cable and a simple means for checking and adjusting cable tension during machine life.

Fig. 1 shows a cable 1 on pulley 2. The required tension T in cable 1 is achieved by tensioning the cable until spring 11 is compressed the distance "C". Spring 11 is trapped to operate on the shoulder of screw 12, and therefore force balance is achieved around pivot point 13.

Fig. 2 shows another embodiment wherein tension T compresses a series of springs 21 until they contact ring 22, which is located around the outside diameter of the springs. Before tension T is reached, the ring is loose and can be turned in place with a finger. When proper tension is achieved, the ring piece 22 will no longer turn.

Fig. 3 is like Fig. 2, but provides for a different cable direction.

Since Figs. 1, 2 and 3 involve a contact/no-contact situation, these designs lend themselves to a switch application for a system where cable tension is so critical that the system should not function if cable tension relaxes.

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