Abstract: An apparatus for throwing an object is mechanically operated and utilizes spring tension to throw an object from a tube which is connected to the spring. The apparatus comprises a base, a frame, apparatus utilized for maintaining the frame at an operating position, a tube and at least one spring. An operator inserts an object to be thrown into the tube, manually moves the tube to a preselected cocked position against spring tension and then releases the tube.

Abstract: A hand held mechanical apparatus for propelling a ball toward a person so that the person can gain experience in hitting and fielding, the apparatus has a tube for holding the ball and a spring for generating the energy to propel the ball from the tube.

Abstract: A vision and hand/eye coordination testing machine includes a front panel sub-divided into a grid-like array. Each array position is either a lamp position or a dummy position, the two being visually indistinguishable. Panel lamps are illuminated in one of three alternative modes, namely: a pursuit mode wherein lamps are illuminated according to a prescribed continuous pattern and the subject must follow the pattern by moving his/her eyes; a saccadic hand/eye mode wherein the subject focuses on a centrally located alternating fixator lamp and actuates a switch at array lamp positions; and a second hand/eye mode, similar to the saccadic mode, but the fixator lamp remains off. Timely switch actuations are counted and actuate respective indicators in a remote monitoring unit. In both hand/eye modes the lamps are illuminated in a random or other sequence unrelated to lamp position.