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Synchronous Oscillator for Pneumatic Pulses

IP.com Disclosure Number: IPCOM000097469D
Original Publication Date: 1962-Dec-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 33K

Publishing Venue

IBM

Related People

Meiser, JH: AUTHOR

Abstract

Bits of information can be transmitted electrically between two pneumatic logic devices at different stations, if reference pulses are provided at substantially the same frequency at each such station. These pulses are created locally.

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Synchronous Oscillator for Pneumatic Pulses

Bits of information can be transmitted electrically between two pneumatic logic devices at different stations, if reference pulses are provided at substantially the same frequency at each such station. These pulses are created locally.

Drawings A and B are elevational and plan views, respectively, of one arrangement. They show a cantilever-supported reed 1 which is tuned to a predetermined frequency. Permanent magnet 2 is mounted on the free end of reed 1 and extends between aligned ports 3 and 4 provided in respective fixed members 5 and 6. Port 7 in magnet 2 permits flow of pneumatic pressure fluid from port 3 to port 4 during a portion of the oscillation of the reed. Excitation of reed 1 is effected by electromagnets 8 and 9 which are energized alternately by
A. C. source 10. Reed 1 is excited at or very near resonance to minimize the input power required. Some damping is necessary to limit the amplitude of the reed. This is accomplished by shaping the reed to provide a sufficiently large inherent damping vane, as shown. A special damping can be added.

Port 7 is preferably designed to be half open or aligned with the coaxially aligned mouths of ports 3 and 4 when the reed is at rest. This makes the pulse- on time always equal to the pulse-off time, independent of reed amplitude.

In drawing C the pulse generator comprises a tuning fork 12 clamped to and projecting from fixed member 13. Pneumatic pressure fluid flows c...