Mechanical guns and projectors – Fluid pressure – With control for discharge of fluid pressure
Patent
1975-09-19
1978-05-30
Pinkham, Richard C.
Mechanical guns and projectors
Fluid pressure
With control for discharge of fluid pressure
124 81, 124 41C, 124 50, 124 82, F41B 1102
Patent
active
040917916
ABSTRACT:
A ball throwing machine having a flat, circular resilient disc with an off-center opening formed therein through which a ball to be thrown is forced at a predetermined velocity. By properly positioning the flat circular resilient disc, having the off-center opening formed therein, a thrown ball can be made to spin about any axis perpendicular to the ball trajectory. A tubular barrel is mounted adjacent to the resilient disc so that as a ball is forced from the throwing machine it is forced through the opening in the resilient disc and into and out of the barrel. The barrel, which is positionable, permits the ball ejected from the throwing machine to be accurately aimed in any desired direction. A firing chamber is located adjacent the resilient disc on the side opposite the barrel. Balls to be thrown are fed into the firing chamber by a ball feeder. When a ball to be fired is positioned in the firing chamber, the firing chamber to the rear of the ball is sealed and a compressed air charge of a predetermined pressure is introduced into the rear of the firing chamber rapidly forcing the ball through the opening in the resilient disc and out of the barrel. The pressure built up in the firing chamber before the ball is expelled through the resilient disc and the barrel determines the velocity of the thrown ball. Thus it can be seen that any type of curved ball, at any desired velocity, can be thrown from the disclosed ball throwing machine. An air reservoir chamber axially aligned with the firing chamber and the tubular barrel is disposed behind the firing chamber. A firing valve, having an open position allowing free communication between the air reservoir and the firing chamber and a closed position eliminating any communication therebetween, is disposed between the air reservoir and the firing chamber.
REFERENCES:
patent: 2182369 (1939-12-01), Barron
patent: 2729207 (1956-01-01), Foster
patent: 2801624 (1957-08-01), Feltman
patent: 3018769 (1962-01-01), Parsoneault
patent: 3724437 (1973-04-01), Halstead
patent: 3838676 (1974-10-01), Kahelin
patent: 3917265 (1975-11-01), Schrier et al.
Castelli Joseph Tom
Forrester Joseph J.
Hum Vance Y.
Instrument Services, Inc.
Massung Howard G.
Pinkham Richard C.
Yeager Robert D.
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