Abstract: A taphole boring or plugging machine having a simple and compact design affording rotation of the tool arm in several planes is provided which comprises: a pivotably supported connection at the free end of the machine tool arm and with a universal joint supported therein, and support bracket which is pivotably supported by the horizontal axle of the universal joint.

Abstract: A frame structure supports a work surface above which there is provided an elongated head number supporting a series of drills. A torque tube having an axis parallel to and spaced from a line passing through the series of drills is mounted to the frame structure for rotation about its axis. The drill head member is coupled to the torque tube such that rotation of the torque tube initially swings the head member in an arc and thereafter urges the head member through a lost motion coupling arrangement against a pair of spaced parallel guide rails, secured to the frame structure normal to the work surface so that the remaining travel of the drill head is rectilinear. The stiffness of the torque tube assures that one end of the elongated drill head will not move ahead or drop behind the other end so that all holes are drilled simultaneously.

Abstract: An adjustment device for mounting a metal disintegrator head to a support is described comprising a first and a second housing with the first housing being mounted to the support and the second housing being mounted to the disintegrator head. One of the first and second housings has a mounting member and a plate member. Means are provided for relatively journaling the mounting member and the plate member about a first axis. A hinge interconnects the first and second housings enabling movement between the first and second housings about a hinge axis which is substantially perpendicular to the first axis. Locking means is provided for locking the position of the first housing relative to the second housing about the hinge axis. The foregoing abstract is merely a resume of one general application, is not a complete discussion of all principles of operation or applications, and is not to be construed as a limitation on the scope of the claimed subject matter.

Abstract: An angle adjustment unit for mounting a disintegrator head to a support is disclosed comprising a first housing adapted for mounting to the support and a second housing adapted for receiving the disintegrator head. A nut including a nut body and an expanded portion is mounted to the second housing with the nut body journaling a housing aperture in the second housing and with the expanded portion engaging the second housing. A threaded member having external threads extends from the first housing. The nut is mounted on the threaded member for producing a frictional engagement between the first and second housings upon rotation of the nut in one direction to prevent relative rotation therebetween and for removing the frictional engagement between the first and second housings upon rotation of the nut in the opposite direction to enable relative rotation between the housings.