Patent ID: 7882930
Filing Date: 2011-02-08
Classification: B66F,G05G,Y10T

Abstract:
1. An apparatus for cranking a shackle of a pump jack comprising: a shaft which fits through the shackle of the pump jack; a handle for cranking the shaft, the handle having a locked state in which the handle is unable to rotate the shaft, and an unlocked state in which the handle is able to rotate the shaft; and a locking mechanism engaging the handle at a pivot point and the shaft, the locking mechanism placing the handle in the locked state or the unlocked state by moving the handle about the pivot point to a first position where the handle extends inward toward the shackle or a second position where the handle extends outward away from the shackle, respectively, the locking mechanism includes a plate having a plurality of a first set of teeth, attached to the shackle, the locking mechanism includes a pin which holds the handle to the shaft, the pin extending into the shaft and handle, the locking mechanism having an axis