Browse Prior Art Database

Asynchronous Punch

IP.com Disclosure Number: IPCOM000096556D
Original Publication Date: 1963-Jul-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 82K

Publishing Venue

IBM

Related People

Mouchon, R: AUTHOR

Abstract

This is a punching and tape feeding device which is controlled at a selected time. The control pulse applied to punch magnet 1 causes clutch shoe 2 to be wedged against rotating wheel 3. Then, arm 4 is moved and drives a punch downwardly. During this movement, shoe 2 is brought backwardly due to the action of boss 5. Arm 4 completes its movement through inertia and then returns backwardly under the action of damping lever 6 and spring 7.

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Asynchronous Punch

This is a punching and tape feeding device which is controlled at a selected time. The control pulse applied to punch magnet 1 causes clutch shoe 2 to be wedged against rotating wheel 3. Then, arm 4 is moved and drives a punch downwardly. During this movement, shoe 2 is brought backwardly due to the action of boss 5. Arm 4 completes its movement through inertia and then returns backwardly under the action of damping lever 6 and spring 7.

A similar device controls the advance of the tape by means of ratchets 11 and 12. Identical elements are represented by the same numbers completed with ('). The action of ratchets 11 and 12 and of associated pawls is as follows. By the action of tape feeding control pulse on magnet 1', arm 4' is driven by wheel 3 in direction of arrow a. By this movement, pawl 12' is back driven by an amount corresponding to the width of a cog and a half for ratchet 12. Pawl 12'' prevents ratchet 12 from being accidentally drawn. Under these conditions, during the return movement of 4', pawl 12' moves into gear with a new cog. This causes the ratchet to turn one cog step in direction of arrow b. This rotation draws a gear wheel solid with the ratchet 12 and symbolized in 13. The second coupled gear-wheel, symbolized in 14, turns in direction of arrow c and draws the solidary tape feeding wheel 15.

When arm 4' is driven by wheel 3 at the beginning of the feeding cycle, the bar 16 turns the pawl 11' away from ratchet 11. By the r...