Abstract: An intrinsically safe safety barrier for attachment to a standard profiled supporting bar, includes a housing having a narrow shell-shaped housing part with narrow sides and wide sides, one of the wide sides being open, a circuit board disposed in the housing part, terminals disposed in the housing part and connected to the circuit board, a potential-compensating bar disposed in the housing part and connected to the circuit board, casting resin filling the housing part after the circuit board, terminals and potential-compensating bar have been inserted therein, and a cover attached to the housing part closing the open side thereof before the casting resin hardens, one of the narrow sides of the housing part having resilient formed-out portions thereon for snapping the housing part to the standard profiled supporting bar, and a method of producing the same.

Abstract: Adapter for the insertion of a pin contact lighting lamp into an electric supply fixture bar. The fixture bar has an insulating support and a plurality of electric contact tabs along the support for contacting a current consuming element having electrical supply contacts at its ends. The adapter allows for the use of halogen lights with pin contacts and extends parallel to the fixture bar. A second type of adapter is orientable and fitted for being directed toward a precise point to be illuminated.

Abstract: A multiple pin electrical plug having a variety of pin combinations of varying geometry is able to accept the several voltage outlet supplies of the major countries of the world. The multiple pin electrical plug is so arranged that pins (P1 to P7 inclusive) are able to extend in a number of configurations dictated by the movement of a shutter plate (21) having a slider (22) that is movable to at least the same number of discrete positions, as said number of configurations.

Abstract: An improved chuck collet in which the elements of the collet, namely the jaw segments, the mounting base, and the interconnecting flexible members, are separate elements thus permitting a selection of materials for the elements to give optimum operating characteristics to the assembly at economical costs.

Abstract: A workpiece drilling machine includes to be moved to any of several drilling locations along the workpiece. A plurality of indexing detents is formed along the rail coinciding with each drilling location. A cam follower on the drill carriage is engageable with the detents to coarsely position the drill carriage. An index-cancelling device is associated with each detent and controllable by a preprogrammed input device to determine which of the detents is to be available for engagement by the cam follower. The programmed input device has a visual marking thereon corresponding to the information encoded therein and a visually perceptible status readout is controlled by the index-cancelling means to permit visual verification that the index-cancelling devices are arranged in accordance with the desired pattern.

Abstract: The present invention relates to a power-actuated chuck having a plurality of clamping jaws which are radially guided in a chuck body and are connected, via wedge receivers which extend at an angle to the axis of the chuck and wedge pieces extending into said wedge receivers, to an adjustment member which is axially displaceable in the chuck body and whose operating stroke is limited by form-locking and can be lengthened by turning a ring mounted coaxial to the chuck axis in the chuck body in order to disengage the clamping jaws from the adjustment member. In order to be able to disengage the clamping jaws from the adjustment member by an additional stroke of the latter without additional transmission elements being necessary for this, the ring is developed as a synchronizing ring (6) for controlling at least two stop pins (7) which are mounted in the chuck body (1) and are displaceable into the path of movement of the adjustment member as stops limiting the operating stroke (A) of the adjustment member (4).

Abstract: A stabilization device for the stand of a drilling machine which comprises a casing secured to the rear of the stand and having a vertical stepped opening and a horizontal opening intersecting the vertical opening at right angles, a punch received in the casing for upward and downward movement and having a pointed projection extending downwardly from the lower end of the punch, a compression spring received in the casing to normally bias the punch downwardly and a spring loaded stop normally biased into the horizontal opening.

Abstract: The ram of a vertical milling machine is raised up from the machine base and then secured thereto in a raised position to accommodate a workpiece having a vertical dimension that is greater than the normal vertical clearance between the tool spindle on the ram and the work support table below the spindle. The method involves removing the bolts which mount the ram on the base, threading long guide screws into these bolt holes and supporting an inverted U-shaped bracket on nuts threaded on the guide screws such that the bracket is disposed in an elevated position above the ram. A lift screw is then extended downwardly through the bight portion of the bracket and is threaded into the conventional threaded eye bolt opening on the top side of the ram. Thereafter, a nut is threaded down on the lift screw against the top side of the bight section of the bracket and continued rotation of the nut causes the lift screw to be displaced upwardly to raise the ram as it is guided by the guide screws.

Abstract: A tool holder incorporating a tool position compensating mechanism which comprises a screw shaft rotatably supported in a tool mounting shell in axial alignment therewith and engageable with a stationary member on a machine tool for relative rotation with the mounting shell is disclosed. A sleeve is threadedly engaged with the screw shaft to be axially moved at the time of relative rotation between the mounting shell and the screw shaft. This sleeve, when axially moved, actuates a transmitting member, supported in the shell, by the wedge action of a cam surface formed thereon, so that a cutting blade support end of a tool secured on the mounting shell is bent to adjust the position of a cutting blade on the tool.

Abstract: The boring head has a tool holder in which the cutting tool is retained by a clamping screw. The tool holder is radially adjustable by an adjustment screw having a fine thread. The adjustment screw has a flange and a pressed-on knob which bears an adjustment scale. Between the knob and the flange, the annular portion of an insert is introduced, free of axial play. The annular portion of the insert is connected to the boring head by a set screw.The insert with the annular portion also is provided with a clamping lip which can be pressed against the tool holder by a locking screw. The tool holder with its fine adjustment can be separately mounted and constitutes an easily replaceable unit.