OPERATING HANDLE FOR BACK HOE

摘要

PURPOSE:To permit three kinds or more of operations of a back hoe to be performed only by the command of backward and forward actions by a method in which a handle is pivotally supported on an operating lever consisting of main lever and sublever which are rotatably fixed to the main shaft and the rotary action of the handle is transmitted from the main lever to the sublever relatively. CONSTITUTION:An operating lever 10 consisting of a main lever 8 and a sublever 9 in parallel with the main lever 8 is rotatably fixed to the main shaft 12 by a bearing 11 formed on the lower end of the main lever 8. The lever 10 is tilted and the main shaft 12 is rotationally operated to move a rod 14 through a lever 13. The lever end 15a is pivotally attached with the lower end of the lever 9, and the other lever end 15b is connected to the rod 16. A handle 18 pivotally supported on the main lever 8 by a pin 17 is tilted around the pin 17, and the whole of the lever 10 is tilted around the main shaft 12. Two different functions can be given to two operating handles only by forward and backward moving actions.