Patent information:

Patent:Utility 1,731,099
Patented:October 8, 1929
Applied:May 3, 1926
Title:Method of Forming a Cement-Receiving Surface on an Insulator Section
Description:Improve cement adhesion by using a special roller tool to form a rough surface similar to that obtained by sanding.
Category:Cement
Assigned to: 

Patentee Information:

HARVEY, William F. Lima, NY

Class and subclass information:

Class:264PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES
Subclass:293MECHANICAL SHAPING OR MOLDING TO FORM OR REFORM SHAPED ARTICLE Deforming the surface only;
Class:264PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES
Subclass:DIG.54 
Class:425PLASTIC ARTICLE OR EARTHENWARE SHAPING OR TREATING: APPARATUS
Subclass:385PREFORM RESHAPING OR RESIZING MEANS: OR VULCANIZING MEANS INCLUDING A CONFORMING PREFORM SUPPORT Surface deformation means only;

Known specimens:

None known

Drawings:

Drawing page 1

Page 1