Browse Prior Art Database

End of Tape Warning Device

IP.com Disclosure Number: IPCOM000073869D
Original Publication Date: 1971-Feb-01
Included in the Prior Art Database: 2005-Feb-23
Document File: 2 page(s) / 35K

Publishing Venue

IBM

Related People

Huckabee, JM: AUTHOR

Abstract

During recording or playback, when the end of a tape is approached, a signal can be generated with the illustrated device by providing a worm shaft 12 wherein the number of turns is proportional to the length of a tape to be used. Worm shaft 12 carries nut 11 which traverses along the length thereof from gear 13 upon shaft rotation. Shaft 12 has pins S and 10 journaled in recesses 2 and 3, respectively, in block 1. A takeoff of the tape drive through shaft 7 and screw 8 effects rotation of worm shaft 12. Block 1 also has a longitudinal channel for receiving contact members 14 and 15 (the contacts being normally closed) which can be maintained in position and adjusted by screws 18 and 19 positionable in tapped openings 4 and 5.

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End of Tape Warning Device

During recording or playback, when the end of a tape is approached, a signal can be generated with the illustrated device by providing a worm shaft 12 wherein the number of turns is proportional to the length of a tape to be used. Worm shaft 12 carries nut 11 which traverses along the length thereof from gear 13 upon shaft rotation. Shaft 12 has pins S and 10 journaled in recesses 2 and 3, respectively, in block 1. A takeoff of the tape drive through shaft 7 and screw 8 effects rotation of worm shaft 12. Block 1 also has a longitudinal channel for receiving contact members 14 and 15 (the contacts being normally closed) which can be maintained in position and adjusted by screws 18 and 19 positionable in tapped openings 4 and 5. In operation, as the shaft rotates and nut 11 traverses the length of worm shaft 12, torque 22 of contact 14 which extends through opening C will be displaced, breaking contact between members 14 and 15. This action provides a signal over leads 16 and 17 indicating the approach of the end of the tape.

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