Mechanical guns and projectors – Centrifugal – Mechanical
Patent
1978-03-10
1980-09-02
Pinkham, Richard C.
Mechanical guns and projectors
Centrifugal
Mechanical
124 41R, 124 36, F41B 700
Patent
active
042201306
ABSTRACT:
A compact, light-weight machine for throwing balls along a desired trajectory includes a housing with an arcuate track leading inwardly from an opening to an initial ball support station. A throwing arm is rotatably mounted within the housing and is connected to a torsion spring. A crank arm is provided on one end of the shaft to rotate the torsion spring and throwing arm against a stop pin that extends through the housing in the path of the throwing arm. The torsion spring stores energy provided through the crank arm as it is rotated about a central axis. When the spring is sufficiently loaded, the throwing arm will slip from engagement with the stop pin and forcibly move against a ball to move it arcuately around the track and outwardly through the opening. The machine is specially adapted for use with resilient balls that will deform both against the track and against the throwing arm. The track will maintain the ball in a plane perpendicular to the central axis of rotation for the shaft and prevent rolling as the ball is moved by the throwing arm from the support station to an abrupt release point located inward of the opening. Once the ball leaves the abrupt release point, it may expand to its original geometry without contacting any other surfaces of the housing or throwing arm. An energy absorbing feature is also provided to take up at least some of the momentum of the spring as it moves past the release point and toward the stop pin. This prevents stress reversal and lengthens the useful life of the spring and throwing arm.
REFERENCES:
patent: 1190565 (1916-07-01), Long
patent: 1352681 (1920-09-01), Nicols
patent: 1758032 (1930-05-01), Dickman
patent: 2660157 (1953-11-01), Binks
patent: 2660158 (1953-11-01), Binks
patent: 2792822 (1957-05-01), Ponza
patent: 3602208 (1971-08-01), Huerlimann
patent: 3777733 (1973-12-01), Mitchell
Glover Clinton G.
Keller Harold A.
Browne William R.
Cytron Incorporated
Pinkham Richard C.
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