Browse Prior Art Database

Vacuum and Pressure Actuated Reel Latches

IP.com Disclosure Number: IPCOM000074369D
Original Publication Date: 1971-Apr-01
Included in the Prior Art Database: 2005-Feb-23
Document File: 2 page(s) / 58K

Publishing Venue

IBM

Related People

Gaston, CA: AUTHOR

Abstract

These mechanisms provide leftward and rightward movement of actuating rods 1 of a magnetic tape unit reel latch. The mechanism in Drawing A is for use when a vacuum source, not shown, is available. Hollow motor shaft 2 has two metal bellows 3 and 33 mounted concentrically between ring plate 4 and end plate 5. Plate 5 is connected to rod 1. Plate 4 is adjacent to shaft 2 and plate 5 is restrained from movement out of shaft 2 by stop ring 6. Rigid vacuum line 7 is supported by and slidable in bearings 8. Flexible suction cup 9 is mounted on line 7 and is normally positioned as shown by the bias of spring 10. Opening flexible vacuum line 11 sharply reduces the pressure between plate 5 and cup 9 and causes cup 9 to seal against plate 5. Air is then exhausted from bellows 3 and 33 through ports 12 causing them to collapse.

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Vacuum and Pressure Actuated Reel Latches

These mechanisms provide leftward and rightward movement of actuating rods 1 of a magnetic tape unit reel latch. The mechanism in Drawing A is for use when a vacuum source, not shown, is available. Hollow motor shaft 2 has two metal bellows 3 and 33 mounted concentrically between ring plate 4 and end plate 5. Plate 5 is connected to rod 1. Plate 4 is adjacent to shaft 2 and plate 5 is restrained from movement out of shaft 2 by stop ring 6. Rigid vacuum line 7 is supported by and slidable in bearings 8. Flexible suction cup 9 is mounted on line 7 and is normally positioned as shown by the bias of spring 10. Opening flexible vacuum line 11 sharply reduces the pressure between plate 5 and cup 9 and causes cup 9 to seal against plate 5. Air is then exhausted from bellows 3 and 33 through ports 12 causing them to collapse. The collapse of bellows 3 and 33 results in a movement to the left of line 7, cup 9 plate 5, and actuating rod 1, against the spring bias provided by the metal construction of bellows 3 and 33 and spring 10. When line 11 is closed and pressure is allowed to return to ambient, bellows 3 and 33 expand back to the position shown in Drawing A, and plate 5 and rod 1 move to the right. Spring 10 causes line 7 and cup 9 to move away from plate 5.

The mechanism in Drawing B is for use when a pressure source, not shown, is available. Shaft 2 has a metal bellows 13 mounted between ring plate 14, disposed adjacent to s...