Patent information:

Patent:Utility 183,425
Patented:October 17, 1876
Applied:March 17, 1876
Title:Improvement in Lightning Rods
Description:Coupling for twisted sheet metal lightning rod composed of hollow end to fit over end of rod and pinned to rod with matching threaded end so coupling parts can be screwed together
Category:Lightning Rod Coupling
Assigned to: 

Patentee Information:

SMITH, Charles H. Chicago, IL

Class and subclass information:

Class:403JOINTS AND CONNECTIONS
Subclass:184THREE OR MORE SERIAL JOINTS, AT LEAST ONE DIVERSE Separable intermediate joint Screw or cam;
Class:403JOINTS AND CONNECTIONS
Subclass:305DISTINCT END COUPLER Plural opposed sockets;
Class:403JOINTS AND CONNECTIONS
Subclass:378INTERFITTED MEMBERS Including discrete retainer For telescoping members Transverse pin;

Known specimens:

None known

Drawings:

Drawing page 1

Page 1