Single-point blocking method of surfacing and edging spectacle l

Details Single-point blocking method of surfacing and edging spectacle l Single-point blocking method of surfacing and edging spectacle l

1977-10-17

1979-05-29

Smith, Gary L.

Abrasive tool making process, material, or composition

Impregnating or coating an abrasive tool

51277, 51284R, B24B 100

Patent

active

041563280

ABSTRACT:
A method of surfacing and edging spectacle lenses utilizing single-point blocking of each lens for both the surfacing and edging operations. The single point utilized is the frame, or pattern, center of the lens. The process is applicable to sphero-cylindrical lenses as well as pure spherical lenses, and in its preferred form requires only a single block attachment step to accomplish both the surfacing and edging processes.

REFERENCES:
patent: 2352616 (1944-07-01), Canning
patent: 2545447 (1951-03-01), Clement
patent: 3015196 (1962-01-01), Campbell
patent: 3049766 (1962-08-01), Buckminster
patent: 3152427 (1964-10-01), Prunier
patent: 3192676 (1965-07-01), Buckminster
patent: 3507076 (1970-04-01), Rudd
patent: 3686796 (1972-08-01), Clark

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