Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1986-06-02
1988-06-28
Goldberg, Howard N.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
29815, 29 907, B24C 332
Patent
active
047530502
ABSTRACT:
A blasting wheel apparatus for treating the interior surface of a hollow workpiece. There is a superstructure which can be moved into position in vertical registry with the open top of the workpiece. The superstructure has hoppers for storing shot pellets to be used in treating the interior surface and a shot feed tube extends downwardly from the hopper so that its open end may be passed through the open top of the cavity and into the interior of the workpiece. A stabilizer structure is movable along the axis of the shot feed tube to engage the top of the workpiece and position the open end of the shot tube within the central area of the cavity in the workpiece. Slides project upwardly from the stabilizer into the support structure. In one embodiment the shot tube has a lifting element at its lower end to engage under the stabilizer so that the stabilizer may be lifted with the superstructure. In another embodiment latches are provided on the slides to enable the stabilizer to be lifted with the superstructure. In the first embodiment the blasting wheel is mounted in the superstructure through a hollow drive shaft surrounding the shot tube. The hollow drive shaft for the wheel is encased within a tubular casing which passes through the center of the stabilizer structure. In the second embodiment the blasting wheel is mounted from below on an upright shaft so that it may be positioned under the shot tube through the bottom of the workpiece. In each case, the shot is fed to the wheel at a controlled rate under the control of a feed auger within the shot tube.
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Golabi Irene Graves
Goldberg Howard N.
McNabb Arthur J.
Penn Lehigh Crane Systems, Inc.
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