Hydraulic spike puller with frictionally delayed moving jaws

摘要

A hydraulic spike puller comprising a frame with a chute, a hydraulic drive section connected to the frame, and a spike contacting section connected to the hydraulic drive section and movably located in the chute. The improvement comprises the spike contacting section comprising two jaws (42) pivotably connected to each other and a friction system (66) extending from the jaws and contacting opposite interior sides of the chute (22). The jaws each have a spike contacting claw section which, when the jaws are in an open position, have a back surface (78) adjacent an interior side of the chute (22) to block an area between the chute and the back surface. The claw sections have substantially non-curved bottom faces (84) which, when the jaws (42) are in the open position, can push a spike (D) out of the chute (22). The claw sections (42) are shaped to prevent a spike (D) from being caught between the chute (22) and the back surfaces (78) of the claw sections. <IMAGE>