Centerless valve grinding

Details Centerless valve grinding Centerless valve grinding

1979-10-22

1984-01-31

Whitehead, Harold D.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

51104, 51105VG, 51132, 51215CP, 51241US, 51166FB, 82 1A, B24B 1500

Patent

active

044281609

ABSTRACT:
There is provided a valve grinding apparatus for centerless grinding of valves. Two base rollers with parallel axes are driven, and a control roller is centered above the base rollers. The control roller can be raised and lowered and the direction of its axis can be changed in order to cause the valve to be moved longitudinally in either direction. A support means is spaced from the base rollers and supports a different region of the valve stem.

REFERENCES:
patent: 1202400 (1916-10-01), McCullough
patent: 1422749 (1922-07-01), Dameron
patent: 1452508 (1923-04-01), Hervig
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patent: 2544318 (1951-03-01), Horberg
patent: 2567320 (1951-09-01), Christensen
patent: 2927404 (1960-03-01), Shoffner
patent: 3041691 (1962-07-01), Vanier
patent: 3066457 (1962-12-01), Moore
patent: 3140569 (1964-07-01), Murray
patent: 3857204 (1974-12-01), Richard

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