Browse Prior Art Database

Escapement Indexing Mechanism

IP.com Disclosure Number: IPCOM000096122D
Original Publication Date: 1964-Dec-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 47K

Publishing Venue

IBM

Related People

Aronstein, J: AUTHOR

Abstract

An escapement mechanism for indexing a rack or other device is formed from two gears supported on an axle. Gear A is fixed to the axle and gear B is free to rotate but spring biased with relation to gear A. Gear B is provided with a pin that extends into a curved slot in gear A.

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Escapement Indexing Mechanism

An escapement mechanism for indexing a rack or other device is formed from two gears supported on an axle. Gear A is fixed to the axle and gear B is free to rotate but spring biased with relation to gear A. Gear B is provided with a pin that extends into a curved slot in gear A.

The angular displacement d of the curved slot is equal to one tooth increment of the respective gears. Pawl C is adapted to slide from engagement with one gear to the other.

When the axle is supplied with a torque, movement of the pawl out of engagement with the fixed gear to engage the other gear allows the fixed gear to rotate one tooth increment. Movement of the pawl back into engagement with the fixed gear allows the second gear to rotate the same one tooth increment.

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