Clincho One-Piece knob for electrical wiring

"Clincho" One-Piece Knob

Mogadore Insulator Company, Mogadore, Ohio, had developed a knob for holding electric wires securely in place, the manufacturer states, without any danger of the wire touching the nail or screw. The feature of the device, it is claimed, lies in the fact that the knobs may be installed and the wires strung afterwards by pulling the wire tight under one ear of the knob and slipping it under the other. The device has been approved by the Underwriters' Laboratories.