Browse Prior Art Database

Automatic Reversing Control

IP.com Disclosure Number: IPCOM000091442D
Original Publication Date: 1968-Feb-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 50K

Publishing Venue

IBM

Related People

Weidenhammer, JA: AUTHOR [+3]

Abstract

The device uses motor reversal reaction to automatically control separate forward and reverse output drive shafts 13 and 14. Rotational control of shafts 13 and 14 is determined solely by the setting of motor control switch 21. The latter provides electrical power from source 22 to drive motor 4 forward or backward according to switch settings F or B respectively. It, for example, can be used in a magnetic tape handler to drive either opposite reels or capstans or both selectively in forward and reverse directions. Counterclockwise CCW direction output is provided by shaft 13, while shaft 14 is disengaged, when motor shaft 5 is rotating CCW. On the other hand, clockwise CW direction output is provided by shaft 14 while shaft 5 is rotating clockwise and shaft 13 is then disengaged.

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Automatic Reversing Control

The device uses motor reversal reaction to automatically control separate forward and reverse output drive shafts 13 and 14. Rotational control of shafts 13 and 14 is determined solely by the setting of motor control switch 21. The latter provides electrical power from source 22 to drive motor 4 forward or backward according to switch settings F or B respectively. It, for example, can be used in a magnetic tape handler to drive either opposite reels or capstans or both selectively in forward and reverse directions. Counterclockwise CCW direction output is provided by shaft 13, while shaft 14 is disengaged, when motor shaft 5 is rotating CCW. On the other hand, clockwise CW direction output is provided by shaft 14 while shaft 5 is rotating clockwise and shaft 13 is then disengaged.

Shiftable idler wheel 9 has a rubber-type surface for frictionally engaging either wheel 11 or 12 that are respectively connected to shaft 13 and 14. Wheel 9 is supported rotatably on shaft 16 fixed on yoke 7. The latter is pivotable about pin 6 received by key-shaped opening 18 through yoke 7. Pin 6 is fastened to the frame of motor 4 and has bearing flange 20 which supports yoke 7 at one end. Through yoke 7, spring 8 pulls idler wheel 9 into light contact with shaft 5. Spring 8 is fastened between yoke 7 and pin 17, also fixed to the frame of motor
4. The assembly of yoke 7 and wheel 9 is supported on the other side by drag support 10 which holds wheel 9 in an aligned position with wheels 1...