Abstract: A drilling device for removing a spot-welded portion includes a main body casing having a chuck receiving holder, a U-shaped arm one an end of which is connected to a side portion of the chuck receiving holder, a grip handle pivotally connected to a base shoulder portion of the U-shaped arm, a chuck thrusting arm mounted integrally at an end of the grip handle, and a chuck having a drill fixed thereof, the drill facing a free end of the U-shaped arm, and a chuck receiver for receiving the chuck and slidably inserted into the main body casing. The chuck is rotated and projected in the direction toward the free end of the U-shaped arm by movement of the chuck receiver upon depression of the grip handle, the force of which is transmitted via the chuck thrusting arm. The drilling device further includes a projection amount adjusting screw for adjusting the amount of projection of the chuck.

Abstract: An apparatus for applying separate pulling forces to a structure such as a damaged vehicle body includes a post member formed of a back wall and a pair of side walls. The back wall is fastened to the ground by a supporting chain. A vehicle body is pulled by plural towing chains extending around respective first and second sprocket wheels and fixed to a swingable holding member upon extension of a hydraulic cylinder, each of which is mounted on the post member. The side walls of the post member have a plurality of apertures for receiving shafts of the first and second sprocket wheels, of ratchet wheels, of pawls and of the swingable holding member. The pawls are engaged with teeth of the ratchet wheels which are fixed to the first sprocket wheels for preventing return movement of the towing chains.