Fred Locke wall insulator patent

[Trade Journal]

Publication: Western Electrician

Chicago, IL, United States
vol. 41, no. 20, p. 403, col. 3

ILLUSTRATED ELECTRICAL PATENT RECORD.

Issued (United States Patent Office) November 5, 1907.

NO. 870,187. — WALL INSULATOR

No. 870,187. — Wall Insulator

870,187. Wall Insulator. Fred M. Locke, Victor, N. Y. Application filed July 18, 1907.

A wall insulator comprises an entrance tube and a pair of concavo-convex disks surrounding the tube and each provided with a series of concentric annular flanges projecting from their concave faces. (See cut.)

Keywords:	Fred Locke : Patent
Researcher notes:
Supplemental information:	Patent: 870,187
Researcher:	Bob Stahr
Date completed:	October 2, 2009 by: Bob Stahr;