Patent information:

Patent:Utility 1,819,302
Patented:August 18, 1931
Applied:September 9, 1927
Title:Oil and Air Break Pothead Disconnect
Description:Pothead disconnect
Category:Insulator
Assigned to:G. & W. Electric Specialty Co.

Patentee Information:

RAH, Joseph Chicago, IL

Class and subclass information:

Class:218HIGH-VOLTAGE SWITCHES WITH ARC PREVENTING OR EXTINGUISHING DEVICES
Subclass:91 
Class:174ELECTRICITY: CONDUCTORS AND INSULATORS
Subclass:17CTWITH FLUIDS OR VACUUM Boxes and housings Closures, terminals, gaskets;
Class:174ELECTRICITY: CONDUCTORS AND INSULATORS
Subclass:18WITH FLUIDS OR VACUUM Boxes and housings With bushing, terminal or lead-in;
Class:218HIGH-VOLTAGE SWITCHES WITH ARC PREVENTING OR EXTINGUISHING DEVICES
Subclass:97 
Class:439ELECTRICAL CONNECTORS
Subclass:750WITH INSULATION OTHER THAN CONDUCTOR SHEATH Metallic connector or contact secured to insulation Insulating tube, sleeve, or cap concentrically surrounding part of connector;

Known specimens:

Number:U 190
Number:U 190A

Drawings:

Drawing page 1

Page 1

Drawing page 2

Page 2