Patent information:

Patent:Utility 306,146
Patented:October 7, 1884
Applied:May 13, 1884
Title:Press for Molding Glass Insulators
Description:Press for making threads with removable thread forming mandrel
Category:Press
Assigned to: 

Patentee Information:

GRAY, Lawrence B. Boston, MA

Class and subclass information:

Class:65GLASS MANUFACTURING
Subclass:362PLUNGER;

Known specimens:

Number:Specimen known

Drawings:

Drawing page 1

Page 1