Baseball-pitching machine

Details Baseball-pitching machine Baseball-pitching machine

1980-04-14

1983-02-08

Pinkham, Richard C.

Mechanical guns and projectors

Projectile impelled by coacting wheels

F41B 1100

Patent

active

043722849

ABSTRACT:
A baseball-pitching machine wherein a baseball is delivered into the constricted space between, and thereby gripped frictionally by, to oppositely rotating wheels which throw the ball. A single DC shunt wound motor is used to drive the wheels in cooperation with one variable drive pulley and an assortment of guide pulleys. One wheel is driven at a constant speed by the motor while the speed of the second wheel is adjusted by means of a variable drive pulley. By thus changing the speed of one of the two oppositely rotating wheels, it is possible to impart a variety of spins to the thrown ball and thus simulate curve and slider balls thrown by a professional pitcher. The axis of the variable drive pulley is fixed and the position of the belt within the variable drive pulley is controlled indirectly by means of a belt tensioning pulley operated by a screw.

REFERENCES:
patent: Re28462 (1975-07-01), Halstead
patent: 1916253 (1933-07-01), Buckley
patent: 2918915 (1959-12-01), Doeg
patent: 3785358 (1974-01-01), D'Angelo et al.
patent: 3811421 (1974-05-01), Betten
patent: 4026261 (1977-05-01), Paulson et al.
patent: 4262648 (1981-04-01), Wegener et al.

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