Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1978-03-23
1979-12-18
Simpson, Othell M.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
B24B 2300
Patent
active
041787242
ABSTRACT:
In a preferred embodiment this improved mobile rail grinding system comprises propulsion and power source means, a plurality of rail grinding cars coupled thereto and a water car. Each rail grinding car comprises a carrier having a support frame for a housing structure upstandingly supported thereon. The housing structure is adjustably movable on the support frame over a predetermined arc generally centered about the center of curvature of the running surface of the track. A motor is telescopically disposed within the housing structure and has a rotatable shaft downwardly disposed toward the track with a grinding wheel concentrically mounted thereon whereby the working surface of the grinding wheel is gravitationally brought into contact with the running surface of the track. A single piston-cylinder assembly, which is aligned with the center of rotation of the motor means and grinding wheel, is disposed so as to control the reciprocal movement of the motor means. By offsetting or counterbalancing a portion of the gravitational forces, it controls the force of the grinding stone against the running surface of the rail. Improved control and protective devices cope with problems peculiar to such systems.
REFERENCES:
patent: 1735693 (1929-12-01), Pitman
patent: 2018411 (1935-10-01), Miller
patent: 2035154 (1936-03-01), Faries et al.
patent: 2197729 (1940-04-01), Miller
patent: 2779141 (1957-01-01), Speno, Jr.
patent: 3707808 (1973-01-01), Danko
patent: 4050196 (1977-09-01), Theurer
patent: 4091578 (1978-05-01), Panetti
Harsco Corporation
Parker Roscoe V.
Simpson Othell M.
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