Patent information:

Patent:Utility 1,687,556
Patented:October 16, 1928
Applied:July 1, 1925
Title:Reduction of Attenuation Due to the Conductance Losses in Cross Arms and Insulator Pins
Description:CD 122.4; Metal thread thimble for wooden pins carrier circuits connected electrically to other pins or brackets on the same crossarm to reduce leakage losses
Category:Pin
Assigned to:American Telephone & Telegraph Co.

Patentee Information:

GORDON, Chester S. New York, NY
LOWE, James T. Newark, NJ

Class and subclass information:

Class:333WAVE TRANSMISSION LINES AND NETWORKS
Subclass:236 
Class:29METAL WORKING
Subclass:887METHOD OF MECHANICAL MANUFACTURE Electrical device making Insulator making;
Class:174ELECTRICITY: CONDUCTORS AND INSULATORS
Subclass:163RINSULATORS With insulator-supporting or attaching means Support and/or insulator embracing or clamping;
Class:174ELECTRICITY: CONDUCTORS AND INSULATORS
Subclass:200INSULATORS With terminal elements Pin type With thimble in socket;

Known specimens:

Number:CD 122.4

Drawings:

Drawing page 1

Page 1

Drawing page 2

Page 2