Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1975-09-11
1977-03-29
Whitehead, Harold D.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
51 51, 51106R, 51DIG33, B24B 500
Patent
active
040141390
ABSTRACT:
A wheel-balance machine is provided in which a wheel and tire combination is mounted on a rotatable hub. The hub may be adjusted to be freely rotatable so as to determine and compensate for static unbalances of the tire/wheel combination, and it may be controlled to be rotated at high speed, so as to determine any dynamic unbalances in the tire/wheel combination. A power-driven abrasive wheel is also mounted in the machine, and it is driven rotatably and in a reciprocal longitudinal manner to grind the peripheral surface of the tire, in order to true the periphery of the tire with respect to its axis of rotation. Electric lamp indicators are provided which are selectively de-energized during the dynamic balance test of the tire/wheel combination, and which serve to indicate the angular positions on the tire at which compensating balances should be mounted to offset the dynamic unbalance. Also, a pneumatic bearing is provided which may be inflated to a relatively high pressure to hold the rear end of the drive shaft of the machine on its axis of rotation during the aforesaid grinding step, and which may be deflated to a reduced pressure to permit the rear end of the drive shaft to be displaced radially during the dynamic balance test in the event the dynamic unbalance condition exists in the tire/wheel combination. All of the foregoing operations are carried out in a single machine in an expeditious manner, and without the need to remove the tire/wheel combination from the machine until all the operations have been completed.
REFERENCES:
patent: 1639444 (1927-08-01), Terry
patent: 2322939 (1943-06-01), Inman
patent: 2349602 (1944-05-01), Baldenhofer
patent: 2378018 (1945-01-01), Inman
patent: 2610446 (1952-09-01), Hawkinson
patent: 3036467 (1962-05-01), McWhorter
patent: 3782203 (1974-01-01), Dalrymple
patent: 3785210 (1974-01-01), Muller
Colbert Otto F.
Shooter Donald H.
Beecher Keith D.
Whitehead Harold D.
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