Automatically varied oscillation type ball projecting device

Claim 1

An oscillating ball throwing machine comprising, a substantially T-shaped base member, said T-shaped base member includes a first elongate member and a second elongate member joined at one end thereof to the first elongate member intermediate the ends of the first elongate member, wheel means on each of the extreme ends of the first and second elongate members for supporting the machine, an upstanding stub shaft on the second elongate member between the ends thereof, a substantially flat rectangular vertically positioned plate mounted on the base member, said plate extending substantially the full length of said second elongate member, a bushing on said plate received on said stub shaft for oscillation of said plate about said stub shaft, a ball throwing mechanism mounted on said plate, said ball throwing mechanism including a motor, means supported on said plate operatively connected with said motor for projecting a ball, said means including a ball throwing arm and a sprocket, a means supported on the plate for containing a supply of balls to be projected and for feeding balls to said throwing arm, cam follower means on said second elongate member, rotable camming means carried by said plate adjacent a lower edge portion thereof for engaging the cam follower means on the second elongate member for causing oscillation of said plate and said ball throwing mechanism from side to side through a predetermined angular displacement, means operatively connecting said rotatable camming means to said sprocket for rotation of said rotatable camming means incident to operation of said throwing arm, and means carried by saId second elongate member and operatively connected to said plate for adjusting the angular displacement of said plate from zero to a predetermined value.