A new transmission-line suspension clamp

A DEVICE for suspending power-line cables at the insulators must be satisfactory from the point of view of the stresses produced. The more acute bends at the points of suspension will obviously result in greater bending stresses in the cable there than in the free span between them. This bending stress is also increased by the tensional stress in the cable. Quite gentle winds, moreover, may easily set up vibrations in the cable, which will increase the stresses at the points of suspension to such an extent that the cables will break after a longer or shorter period. The efforts to reduce this drawback were at first directed wholly to reducing the effect of cable vibrations while disregarding the necessity of diminishing the much larger and more dangerous bending stresses.