Patent information:

Patent:Utility 157,717
Patented:December 15, 1874
Applied:November 23, 1874
Title:Improvement in Tempering Glass, and Furnaces Therefor
Description:Tempering glass by dropping into oil (see patent 169,783)
Category:Glass
Assigned to: 

Patentee Information:

LA BASTIE, Francois B. A. Royer de Paris,, France

Class and subclass information:

Class:65GLASS MANUFACTURING
Subclass:116PROCESSES Glass preform treating Tempering Quenching in liquid bath;
Class:65GLASS MANUFACTURING
Subclass:349PRODUCT COOLING MEANS (E.G., TEMPERING) With preceding reheater;

Known specimens:

None known

Drawings:

Drawing page 1

Page 1