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Reversible Endless Tape Cassette

IP.com Disclosure Number: IPCOM000074308D
Original Publication Date: 1971-Apr-01
Included in the Prior Art Database: 2005-Feb-23
Document File: 2 page(s) / 44K

Publishing Venue

IBM

Related People

Owen, CE: AUTHOR

Abstract

The cassette comprises a case formed from two halves, only one of which is shown. Two flanged wheels 1 have extended axles 2 mounted to slide in slots 3 in the case. A spacer 4 is positioned between the halves of the case and has fingers 5 which extends between the flanges of the wheels. A spring 6 mounted in spacer 4 has ends which bear against axles 2 to maintain the edge of the flanges against inwardly extending portions 7 of the case. This prevents the tape 8 from moving when the cassette is shaken.

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Reversible Endless Tape Cassette

The cassette comprises a case formed from two halves, only one of which is shown. Two flanged wheels 1 have extended axles 2 mounted to slide in slots 3 in the case. A spacer 4 is positioned between the halves of the case and has fingers 5 which extends between the flanges of the wheels. A spring 6 mounted in spacer 4 has ends which bear against axles 2 to maintain the edge of the flanges against inwardly extending portions 7 of the case. This prevents the tape 8 from moving when the cassette is shaken.

The case has an aperture 9 which receives the head of a tape unit when the cassette is mounted on the unit. Similarly a capstan passes through one or the other of two apertures 10 and 11, in accordance with which way up the cassette is mounted. In operation, the capstan pushes one of the wheels 1 inward and drives tape 8 between the flanges of the wheel and the corresponding portion 7 of the case. As the capstan revolves, tape 8 is tensioned against the head by the clamping action of the undriven wheel and its corresponding portion 7. This action, however, permits some slip to allow the tape to move. Fingers 5 act to prevent the tape loops tangling round the wheels.

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