[Trade Journal] Publication: Electrical World New York, NY, United States |
Porcelain Knob.—A reversible square knob has recently been developed by the Illinois Electric Porcelain Company, Macomb, Ill. This knob differs from other reversible square knobs in that a curved wireway is provided which is said to draw the wires tighter than ordinary wireways do. The knob is equipped with a heavy shoulder which gives it strength at the weakest point. The above company is also making a porcelain knob which has been designed by the Snyder Hunt Company, of Belle Plaine, Ia. This knob will carry rubber-covered wire in sizes up to and including No. 8. With this knob a whole line can be run through a building and the wire pulled through the hole and drawn tight afterward. |
Keywords: | Snyder-Hunt Company : Illinois Electric Porcelain Company |
Researcher notes: | |
Supplemental information: | |
Researcher: | Elton Gish |
Date completed: | September 15, 2010 by: Elton Gish; |