Recent Patents; Patent #660,271 knob

[Trade Journal]

Publication: American Electrician

New York, NY, United States
vol. 13, no. 1, p. 27, col. 1

Some Recent Electrical Patents


Insulating Knob. Several forms of knob insulators have been devised, the object of which has been to provide a means for attaching wires to the knob without the use of separate tie wires. One of the most recent devices of this sort is illustrated in Fig. 1. The body of the insulator knob is of the ordinary shape, but the portion below the groove is extended on one side into a lip, or hook. A, the function of which is made clear by the engraving. Patent No. 660,271.


Fig. 1. Insulator Knob.



Researcher notes: 
Supplemental information: Patent: 660,271
Researcher:Bob Stahr
Date completed:April 1, 2009 by: Bob Stahr;