Owen J. Roberts

“ As already suggested, every safety razor consisting of a combination of guard, cap, blade, and clamping means must also provide means to keep the blade in position relative to the cap and guard. The means adopted have been various. Gillette resorted to the device of square rods or round pins fixed either to the guard or to the cap and slots or holes in the blade and the other member through which the rods or pins should pass to fix the blade in position. ”

“ A guard, a cap or backing member, a blade, a handle, and means to clamp the blade in shaving position between the cap and the guard. King C. Gillette accomplished a major advance in the art when he conceived a double-edged blade so thin and flexible as to require external support to give rigidity to its cutting edge and a safety razor embodying such a blade. ”