Abrasive tool making process – material – or composition – Impregnating or coating an abrasive tool
Patent
1978-07-12
1980-04-15
Simpson, Othell M.
Abrasive tool making process, material, or composition
Impregnating or coating an abrasive tool
29DIG87, B24B 5502
Patent
active
041976789
ABSTRACT:
Coolant separator apparatus for a grinding machine of the type used to grind, shape and bevel ophthalmic lenses with a high speed grinding wheel and utilizing recirculating coolants to promote grinding speed and grinding quality with respect to both glass and plastic lenses. The apparatus includes a first tank for containing coolant used in the grinding and edging of glass lenses and a second tank for containing coolant used in the grinding and edging of plastic lenses. Pumps are provided for separately pumping coolant from each of the tanks depending on the presence of glass or plastic. A first nozzle sprays coolant from the first tank when glass is ground and a second nozzle sprays coolant from the second tank when plastic is ground. A shiftable separator is aligned with the tanks for shifting between a first position when coolant is being sprayed from the first nozzle to direct the coolant back into the first tank and a second position when coolant is being sprayed from the second nozzle to direct the coolant back into the second tank. Controls are provided for shifting the separator between the first and second positions in conjunction with the pumping of coolant from the first and second tanks respectively. The apparatus is adapted to be mounted in a grinding machine in position to maintain the two coolants separate during the grinding of plastic and glass lenses in the machine and preventing the plastic and glass coolants from intermixing and contaminating one another.
REFERENCES:
patent: 2426817 (1947-09-01), Charlton et al.
patent: 2434679 (1948-01-01), Wagner et al.
Roll Guy
Savage Milton B.
Parker, Jr. Roscoe V.
Simpson Othell M.
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