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Dictation Transducer Positioning Apparatus

IP.com Disclosure Number: IPCOM000095237D
Original Publication Date: 1965-Oct-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 42K

Publishing Venue

IBM

Related People

Wehmer, BF: AUTHOR

Abstract

A combination recording-reproducing head for a dictation machine is properly positioned so that the previously dictated material adjacent the starting edge of a cylindrical dictating belt is always reproduced during a transcribing operation. The combination recording-reproducing head is mounted on carrier assembly 10 having a driving connection with elongated lead screw 11. Magnetic record belt 12 is disposed about drive and idler capstans to one side of the recording-reproducing head. A helical recording track is formed on belt 12 during dictating operations as the drive capstan and lead screw 11 are rotated. Backspacing is accomplished when electromagnet 14 is energized under operator control to incrementally rotate backspace ratchet 15.

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Dictation Transducer Positioning Apparatus

A combination recording-reproducing head for a dictation machine is properly positioned so that the previously dictated material adjacent the starting edge of a cylindrical dictating belt is always reproduced during a transcribing operation. The combination recording-reproducing head is mounted on carrier assembly 10 having a driving connection with elongated lead screw 11. Magnetic record belt 12 is disposed about drive and idler capstans to one side of the recording-reproducing head. A helical recording track is formed on belt 12 during dictating operations as the drive capstan and lead screw 11 are rotated. Backspacing is accomplished when electromagnet 14 is energized under operator control to incrementally rotate backspace ratchet 15. This causes assembly 10 to move to the left in the backspace direction by an amount corresponding to one thread on lead screw 11. The carrier assembly follower for lead screw 11 is lifted from 11 when index lever 16 is depressed. This permits manual movement of assembly 10 to any position relative to belt 12.

Carried at the left end of lead screw 11 is face cam 17 having the same rise as the angle of the threads of 11. When belt 12 is inserted in the dictation machine for initial dictation, the operator returns assembly 10 and the recording- reproducing head to the left. This is effected by depressing lever 16 and manually moving assembly 10 to the starting position. Actuation of lever...