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AUTOMATIC BELT TENSIONING AND TRACKING UNIT

IP.com Disclosure Number: IPCOM000022979D
Original Publication Date: 1976-Jun-30
Included in the Prior Art Database: 2004-Mar-27
Document File: 2 page(s) / 194K

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed is a procedure for automatically tensioning and tracking belts, such as those used in recording processes. The system consists of an idler~roller resting against a belt, At either end of the idler is a straight bearing which rests in a slot and on a cain. The cam gives a linear displacement which enables one side at a time of the idler~ roller to move in a linear direction. The cam~smotion is controlled by a motor which is controlled by two photocells. The linkage is a spring/wire type. The motor wraps the wire around a pulley. The spring allows for tensioning.

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XEROX DISCLOSURE JOURNAL

AUTOMATIC BELT Proposed Classification
TENSIONING AND U.S. Cl. 74/241
TRACKING UNIT Int, Cl, F16h 7/18
E. Vipond
P. Evans

Disclosed is a procedure for automatically tensioning and
tracking belts, such as those used in recording processes.
The system consists of an idler~roller resting against a
belt, At either end of the idler is a straight bearing
which rests in a slot and on a cain. The cam gives a linear
displacement which enables one side at a time of the idler~
roller to move in a linear direction. The cam~smotion is
controlled by a motor which is controlled by two photocells.
The linkage is a spring/wire type. The motor wraps the wire
around a pulley. The spring allows for tensioning.

A guideline is marked near the edge of the belt and out of
sight of the viewing area, A photocell is on either side of
the line, As the line wanders under one of the photocells,
the photocell turns on the motor, The motor winds the wire
around the pulley causing the cain to move. This in turn
causes the corresponding side of the idler-~rollerto lift Up,

This creates a different angle and surface on which the belt
must travel, The belt now has a tendency to move in the
direction of least resistance.

Volume 1 Number 6 June 1976 15

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