Patent information:

Patent:Utility 324,157
Patented:August 11, 1885
Applied:June 26, 1884
Title:Method of Forming Screw Threads on Glass
Description:Threads formed in glass (plunger remains in glass during annealing)
Category:Thread
Assigned to: 

Patentee Information:

PENNYCUICK, James G. Boston, MA

Class and subclass information:

Class:65GLASS MANUFACTURING
Subclass:69PROCESSES Forming product or preform from molten glass Initial forming of hollow product or preform in mold cavity With annealing or tempering;

Known specimens:

Number:Specimen known

Drawings:

Drawing page 1

Page 1