Process for finishing spectacle frames and parts thereof

Claim 2

A process for polishing plastic parts of spectacle frames, comprising: placing the parts in a refrigerated receptacle with scrap pieces of plastic, wax, water and a finely powdered abrasive, and effecting a tumbling operation while keeping the ingredients in the receptacle refrigerated.

Claim 3

A process as claimed in claim 1 wherein said scrap pieces are generally diamond-shaped and have sharp edges.

Claim 4

A process as claimed in claim 1, wherein the scrap pieces are of the same material as the parts to be polished.

Claim 5

A process as claimed in claim 3, wherein the scrap pieces of plastic are cooled prior to placing them in the receptacle.

Claim 6

A process for polishing plastic parts of spectacle frames, comprising cutting plastic top rim stock in two to form two tope rims and scrap, cooling the scrap to a temperature of about 48* F., placing a quantity of the cooled scrap, together with the parts to be polished, in a refrigerated receptacle, adding a wax to the receptacle, water, and a finely powdered abrasive, and tumbling the receptacle while keeping its contents refrigerated.

Claim 7

A process for polishing plastic parts of spectacle frames, comprising cutting plastic top rim stock in two to form two tope rims and scrap, cooling the scrap to a temperature of about 48* F., placing a quantity of the cooled scrap, together with the parts to be polished, in a refrigerated receptacle, adding a wax to the receptacle, water, and a finely powdered abrasive, and tumbling the receptacle while keeping its contents refrigerated.

Claim 8

A process for polishing plastic parts of spectacle frames, comprising cutting plastic top rim stock to form a plurality of top rims and scrap from the plastic stock, cooling the scrap to a temperature of about 48* F., placing a quantity of the scrap together with pumice, a waxy polishing material, and water in a receptacle, subjecting the contents of the receptacle to a brief tumbling operation to intermix said contents, then adding to the receptacle the plastic parts that are to be polished, and again subjecting the contents of the receptacle to a second tumbling operation for a period of time substantially greater than that of the first tumbling operation, and maintaining the contents of the receptacle refrigerated throughout the second tumbling operation.

Claim 9

A process for polishing plastic parts of spectacle frames, comprising cutting plastic top rim stock to form a plurality of top rims and scrap from the plastic stock, cooling the scrap to a temperature of about 48* F., placing a quantity of the scrap together with pumice, a waxy polishing material, and water in a receptacle, subjecting the contents of the receptacle to a brief tumbling operation to intermix said contents, then adding to the receptacle the plastic parts that are to be polished, and again subjecting the contents of the receptacle to a second tumbling operation for a period of time substantially greater than that of the first tumbling operation, and maintaining the contents of the receptacle refrigerated throughout the second tumbling operation.