Portable ball throwing machine having oscillatory feature

Details Portable ball throwing machine having oscillatory feature Portable ball throwing machine having oscillatory feature

1977-10-11

1979-09-25

Pinkham, Richard C.

Mechanical guns and projectors

Spring

124 40, 124 34, 124 50, F41B 700

Patent

active

041686950

ABSTRACT:
A portable ball throwing macine employs a battery operated motor for projecting tennis balls for practice purposes. The balls are fed from a bin by means of a ball fence and agitator to a tube which conveys the ball to a ball track. A spring biased arm is cocked by the motor and released at the correct point in the cycle by operation of a cam gear and pawl. The arm then strikes the ball projecting it from the machine. Included in the device is an arrangement for oscillating the device from side to side to vary the pattern of balls projected from the machine and a gate mechanism to index balls onto the ball track.

REFERENCES:
patent: 2815743 (1957-10-01), Brunderman
patent: 3128752 (1964-04-01), Andersen
patent: 3272194 (1966-09-01), Egbert
patent: 3421491 (1969-01-01), Brown
patent: 3610223 (1971-10-01), Green
patent: 3821945 (1974-07-01), Foster
patent: 3880135 (1975-04-01), Martin

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