Oscillating flight control device for a ball projecting machine

Details Oscillating flight control device for a ball projecting machine Oscillating flight control device for a ball projecting machine

1978-05-30

1980-12-30

Browne, William R.

Mechanical guns and projectors

Element

Projector barrel

74 47, F41D 900

Patent

active

042417171

ABSTRACT:
A device for use with a tennis ball projecting machine to control the flight of the balls projected from the machine through a flexible tube. The device has a pair of adjacent casings supporting the tube. The first casing is pivotably mounted at its rear end to the machine for swinging about a vertical axis. The second casing is pivoted at its rear end to the front end of the first casing and holds the outlet end of the tube at its free end. The second casing can be moved up or down, and fixed in place, to control the ball trajectory. A power mechanism is provided on the device to oscillate the first casing, and thus the second as well, about the vertical axis to swing the ball projecting tube according to a predetermined angle about a vertical axis.

REFERENCES:
patent: 1687178 (1928-10-01), Peterson
patent: 2668526 (1954-02-01), Woolsey
patent: 3879866 (1975-04-01), Gunderson
patent: 3905349 (1975-09-01), Nielsen et al.
patent: 4027646 (1977-06-01), Sweeton

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