Grinding machines

Details Grinding machines Grinding machines

1989-06-01

1990-03-20

Schmidt, Frederick R.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

51101LG, B24B 500, B24B 700

Patent

active

049089919

ABSTRACT:
The machine for grinding ophthalmic glasses comprises a housing (1) open in its upper part and housing a grinding wheel (7) driven in rotation on a first horizontal shaft (6), a U-shaped carriage (13) pivotally mounted on a second horizontal shaft (11) and located above and at the rear of the first horizontal shaft (6) and carrying between the wings of the carriage a shaft (14) in two parts which clamp therebetween a work piece (15) to be machined, the carriage being movable about and along the second shaft. The machine further comprises a hood (2) having a pivotal upper panel (5) and mounted in the housing (1) to be pivotable between an upper closing position and a lower opening position, a motor (20) for driving the hood, and a first device (26, 27) and a second device (24, 25) for raising the carriage and the panel respectively when the hood moves from its upper position to its lower position.

REFERENCES:
patent: 4640055 (1987-02-01), Badin et al.
patent: 4766699 (1988-08-01), Gottschald et al.
patent: 4779603 (1988-10-01), Crocetti

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