Browse Prior Art Database

Magnetic Tape Loop Auto-Load Memory

IP.com Disclosure Number: IPCOM000097713D
Original Publication Date: 1961-May-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 70K

Publishing Venue

IBM

Related People

Handen, C: AUTHOR

Abstract

This device automatically loads and unloads an endless magnetic tape loop for use with a transport mechanism.

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Magnetic Tape Loop Auto-Load Memory

This device automatically loads and unloads an endless magnetic tape loop for use with a transport mechanism.

Tape 1 is transported past magnetic head 2 by revolving drum 3. The tape loop diameter is larger than the drum's diameter so that the loop falls down into a small vacuum column 4. Head 2 is indexable across tape 1 within column 4. Drive of the tape is accomplished by its frictional contact with drum 3, in combination with the force exerted by the vacuum column.

Transfer of tape 1 to and from the transport device is accomplished by a semi-circular manifold 5 to which vacuum is selectively applied. When vacuum is applied to 5, tape 1 lifts off the drum and hangs in nearly a circular configuration such that it clears both drum 3 and the vacuum column cover plate. The manifold is then moved, by devices not shown, in a direction parallel to the drum axis to place the tape loop on a tape storage cartridge. When the loop is in place relative to the cartridge, the vacuum applied to the manifold is removed leaving the tape on the cartridge.

The manifold is then withdrawn from the cartridge to allow indexing of another cartridge in front of drum 3. The manifold is again moved over the tape in the cartridge, vacuum is applied to lift the tape off the cartridge and the tape is brought back over drum 3. The vacuum is removed from the manifold to drop the tape on the drum to start another cycle of operation.

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