Browse Prior Art Database

Magnetic Tape Cartridge Cap

IP.com Disclosure Number: IPCOM000073995D
Original Publication Date: 1971-Feb-01
Included in the Prior Art Database: 2005-Feb-23
Document File: 2 page(s) / 32K

Publishing Venue

IBM

Related People

Johnson-Hill, SE: AUTHOR

Abstract

A magnetic tape cartridge cap 1 fits on a cartridge 2 containing data to be stored and must be removed before the cartridge can be re-used. This reduces the risk of accidental use or destruction of the data. Cap 1 is made of plastic and is shaped to cooperate with slot 3 and rectangular hole 4 of cartridge 2. Cap 1 comprises two resilient legs 5 and 6 joined at one end by bridge 7 so that the distance between the two legs is the width of cartridge 2. Extending between legs 5 and 6 and integral with bridge 7 is a projection 8. The other ends of legs 5 and 6 are provided with a rectangular hole 9 and post 10, respectively, of corresponding cross section. Post 10 is slightly smaller than that of hole 4. When cap 1 is in its relaxed state as shown, post 10 extends between legs 5 and 6 with its outer end projecting into hole 9.

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Magnetic Tape Cartridge Cap

A magnetic tape cartridge cap 1 fits on a cartridge 2 containing data to be stored and must be removed before the cartridge can be re-used. This reduces the risk of accidental use or destruction of the data. Cap 1 is made of plastic and is shaped to cooperate with slot 3 and rectangular hole 4 of cartridge 2. Cap 1 comprises two resilient legs 5 and 6 joined at one end by bridge 7 so that the distance between the two legs is the width of cartridge 2. Extending between legs 5 and 6 and integral with bridge 7 is a projection 8. The other ends of legs 5 and 6 are provided with a rectangular hole 9 and post 10, respectively, of corresponding cross section. Post 10 is slightly smaller than that of hole 4. When cap 1 is in its relaxed state as shown, post 10 extends between legs 5 and 6 with its outer end projecting into hole 9.

When the free ends of the legs are separated, post 10 moves out of hole 9. The legs are further separated until the distance between the end of post 10 and leg 5 is greater than the width of cartridge 2. Then projection 8 is inserted in slot 3 and legs 5 and 6 are swung over the cartridge to introduce post 10 in hole 4. By pressing the legs together the end of post 10 is caused to project from hole 4 and engage in hole 9, to lock cap 1 on cartridge 2. Bridge 7 prevents access to tape loader 11. Cap 1 is removed by the reverse procedure.

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