HIGH VOLTAGE SWITCH WITH BLADE TYPE CONTACT AND PAWL AND RATCHET OPERATING MECHANISM

摘要

A high voltage disconnect switch comprising an electrically conductive switch blade and ratchet mechanism to open and close the switch by moving the blade linearly. The ratchet mechanism comprises an actuating lever attached to a ratchet mechanism capable of moving the switch blade in either linear direction when the actuating lever is ratcheted by a hook stick. A direction selecting arm permits selection of the direction of movement of the switch blade when the actuating lever is ratcheted. The direction selecting arm is connected to cams which selectively engage one of two oppositely directed pawls in the ratchet mechanism. The pawls drive a drive gear that engage apertures in the switch blade. The switch blade can also be moved manually in the selected direction without using the ratchet means by hooking a hook ring on the switch blade with a hook stick. The ratchet mechanism also prevents accidental movement of the switch blade in the nonselected direction.