OPERATOR CONTROLLER Russian patent published in 2008 - IPC B61C17/12 H01H19/60 

FIELD: transport.

SUBSTANCE: operator controller consists of a base with lengthwise rods and four crosswise frames attached thereto. It also comprises main cam shaft to control the traction and braking and the reversing cam shaft the to change the direction, both shafts being fixed between the aforesaid frames and rods. Every shaft is furnished with a control handle and an appropriate group of cam-type contactors. The said shafts are aligned. The hollow reversing shaft inside accommodates the main cam shaft with the plate fitted on every end of the latter and furnished with a through threaded hole and a blank threadless hole arranged at an angle to each other the said threaded holes receive screws designed to lock the plate on the main cam shaft ends. The plate blank hole receive the spring to create a moment of friction. There is a pin on every plate with its end entering the slot of the lever fitted on the shaft of every potentiometer making the traction or braking force set-point devices, the lever being locked with the nut thereon.

EFFECT: higher reliability.

4 dwg