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Browse Prior Art Database

Braking a Tape

IP.com Disclosure Number: IPCOM000098017D
Original Publication Date: 1961-Dec-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 41K

Publishing Venue

IBM

Related People

Caburet, A: AUTHOR

Abstract

This braking device substantially reduces carbon paper tape tearing in a machine urging it intermittently. This is realized by the action of a movable arm giving the tape clearance.

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Braking a Tape

This braking device substantially reduces carbon paper tape tearing in a machine urging it intermittently. This is realized by the action of a movable arm giving the tape clearance.

Fixed drum 1 supports a hub on which is mounted tape coil 3. Tape 4 emerges through slot 5, provided in the wall of 1, and is directed to regulating arm 6. Arm 6 bears adjustable capstan 6, supporting two pins on which are idler pulleys 7 and 8. Tape 4 from coil 3 intertwines pulleys 7 and 8 so as to form an
S. After leaving pulley 8, the tape feeds over pulleys 10 and 11, idly mounted on fixed pins. Arm 6 tends, under the action of spring 12, to return to its home position as shown.

The strain exerted on arm 6 by spring 12 is inferior to that exerted on tape 4 in the direction of arrow 13, when the machine operates. Whenever traction is exerted on tape 4 in the direction of 13, arm 6 leaves its home position. It assumes an operating position along its possible trajectory. This position is represented by dot and dash lines.

In home position, tape 4 is locked because its two portions 14 and 15, moving in a reverse direction, contact pulley 7. When the tape is subjected to an abrupt pulling in the direction of arrow 13, arm 6 leaves home position, the tape is released and unwinds from the drum. As soon as traction on the tape ceases, spring 12 brings the arm back to home position, thus locking tape 4 and ensuring its proper tension.

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