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Punched Paper Tape Lock

IP.com Disclosure Number: IPCOM000095948D
Original Publication Date: 1964-Oct-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 51K

Publishing Venue

IBM

Related People

Gergaud, F: AUTHOR

Abstract

The stopping of punched paper tape feeding in a tape reader must occur in a very short time, in order to avoid having to read characters which have gone beyond the reader station after a stop signal.

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Punched Paper Tape Lock

The stopping of punched paper tape feeding in a tape reader must occur in a very short time, in order to avoid having to read characters which have gone beyond the reader station after a stop signal.

When the paper tape is moving, coil 1 is energized and maintains lever 2 against its core. Paper tape 3 passes between two jaws 4 and 5. The space between jaws 4 and 5 is just large enough to allow the passing of two thicknesses of paper.

Lower jaw 4 has, for the part that is in contact with the paper, a hard and polished surface. Upper jaw 5 comprises, on its part in contact with the paper, a plate made of a plastic material having a high adherence-coefficient. The plate has several grooves in order to avoid the air cushion effect just as jaws 4 and 5 are brought nearer together.

When a stop signal occurs, coil 1 is deenergized, spring 6 attracts lever 2 which pivots upon its axis 7. Jaw 4 is then applied to jaw 5. These jaws are articulated in their middle point according to two perpendicular directions. This allows the two surfaces of the jaws to make perfect contact.

Just as coil 1 is deenergized, a pulse is sent to coil 8 which attracts its armature 9. Such action transmits to jaw 5 a horizontal displacement of adjustable length. As jaw 4 keeps the paper firmly pressed, the paper follows jaw 5 in its backward displacement. Under these conditions for every stop of the tape, an automatic return occurs, thus bringing the punched hole, which...