| 摘要 |
699,545. Dressing grinding wheels. HALLEWELL, H. S. Sept. 5, 1952 [Sept. 10, 1951], No. 21325/51. Drawings to Specification. Class 60. In grinding wheel dressing apparatus having a template, a template follower and a dressing tool holder rockable about axes perpendicular to the plane of the template and connected by a pantograph, and a connection supplementary to the pantograph for constraining the template follower and the dressing tool holder to rock in unison, the template may be rotated about an axis disposed in the neighbourhood of the template plane and capable of being set perpendicular to the axis of the grinding wheel. The apparatus is the same as that described in Specification 699,544. |
