Abstract: A device is disclosed for cutting two parallel partially intersecting bores, such as the bores used in a screw type compressor housing, comprising, a device housing, a pair of spindles rotatably mounted to the housing and a tool holder connected near the end of each spindle. The spindles are engaged with each other through gears so that rotation of one spindle in one direction causes rotation of the other spindle in opposite direction. A drive shaft is connected to one of the spindles for rotating the pair of spindles simultaneously. Each tool holder is elongated along a major tool holder axis thereof which is substantially transverse to an axis of its associated spindle. The major axes of the two tool holders are always substantially perpendicular to each other so that free rotation of the two spindles, in opposite directions is possible.

Abstract: The invention provides a turning type multi-spindle attachment used for mounting a plurality of drills or taps to a drilling or tapping machine. This attachment comprises a mounting cylinder fixed to the spindle quill of the drilling or tapping machine and a body positioned such that a turning position thereof is adjustable relative to the mounting cylinder, whereby a plurality of drills or taps are rotatably supported by the body. The position of the drills or taps is adjustable around the mounting cylinder by causing turning of the body relative to the mounting cylinder.

Abstract: A multi-positionable work station containing a plurality of easily reciprocally, positionable work station blocks is disclosed. As shown, each of said blocks is adapted to receive one of a variety of tools and is further adapted to be locked in place by an integral quick camlock contained within said station. A use of the station is illustrated with an acid-fill station which will simultaneously fill each of the cells in a multi-celled electric storage battery for automotive use with battery acid. In the embodiment shown, the station is adjustable vertically without the necessity to disassemble the apparatus to which the station is attached and further contains structure to adjust the forward and rear position of the batteries being filled relative to the work station so that precise alignment may be achieved.

Abstract: Disclosed is a guide member of a multiple spindle attachment employed in drilling and tapping machines, which guide member is adapted to guide a plurality of spindle holders that mount drills or taps, and comprises a guide member body fixed to a fitting flange of the multiple spindle attachment frame, a plurality of guide channels formed in the guide member body for guiding the spindle holders, and a disk-shaped positioning member for positioning each of the guided spindle holders. The guide member body is disposed such that its center is located on the central axis of the multiple spindle attachment frame when in the attached state, and each of the guide channels extend linearly outwardly in a radial direction about the center of the guide member body.

Abstract: There is disclosed an apparatus for drilling holes in the web and a flange of an H-beam on opposite sides of the web, which comprises a framework having a first, fixedly mounted section and a second section which is mounted on the first section for guided vertical movement with respect to it. Vertical drills for drilling the holes in the webs and horizontal drills for drilling holes in the flange are mounted on the second section of the framework for vertical movement together into positions to permit the beam to be moved through the framework. A means is mounted on the second framework section to monitor undulations in the web so as to maintain the desired position of the horizontal drills relative to the web.

Abstract: Disclosed herein is a machine tool which is particularly adapted for drilling and tapping holes in electric motor pole pieces with a center drill, drill and tap which are sequentially applied to the same hole. The spindle for each tool is provided with its own feed motor and drive motor, and each spindle moves vertically independently of the other for the successive machining operations. The drill and tap spindle frames are connected to horizontal lead screws so they can be moved laterally with respect to the center drill for variable hole spacing. Proportionate spacing is provided so that the drill is always intermediate and equally spaced from the center drill and tap to easily accommodate different size pole pieces which have different spacing requirements of the mounting holes.

Abstract: A multiple spindle drilling machine for wide flange beams comprising at least a pair of wide flange beam supporting rollers for setting and supporting both the flanges of a wide flange beam, respectively, in a cantilevering manner at the drilling position of the wide flange beam, at least a pair of gripping members for gripping the wide flange beam from both the sides thereof so that the beam is not moved, a plurality of drills disposed so that they can move in the lateral direction and the widthwise direction of the wide flange beam for drilling the wide flange beam, and a device for moving at least one of said wide flange beam supporting rollers, said gripping members and said drills integrally in the widthwise direction of the wide flange beam.

Abstract: The invention relates to a machine for drilling and boring tubular plates, the workpiece-carrying elevator being embedded, weight compensation being provided by appropriate means, the machining units moving substantially at ground level opposite thrust tubes bearing on the plate before each machining cycle and absorbing tool thrusts. The machine is characterized by an elevator which supports the plate for machining and which moves on slideways with balancing by hydraulic rams in a constant proportion to the weight of the workpiece being machined. Thrust means retain the thrusts of the spindles, the movements of the latter spindles and means being synchronized by means, the tilting torque produced by the thrust of the spindles is limited by the provision at ground level of a closed framing which interconnects all the constituent elements. The invention is of use for drilling and boring any article, more particularly for the baffle plates of heat exchangers, boilers, water purifiers, heaters and the like.

Abstract: A multiple spindle drilling machine comprising a drilling device attached to a movable attachment stand to drill a web of a wide flange beam, the drilling device including a plurality of drills aligned in the lateral direction of the web, and a shifting device for swinging and shifting the movable attachment stand from a point on a line rectangularly intersecting a flange of the wide flange beam to the point on a line obliquely intersecting the flange of the wide flange beam with one end of the movable attachment stand being as the center.

Abstract: An apparatus for adjusting the vertical position of drills in a multiple spindle drilling machine comprising drills attached in upper and lower two lateral rows to a gear box of the multiple spindle drilling machine, said two groups of the drills being arranged so that the drills of the respective groups can be simultaneously moved in the vertical direction, a motor for driving and rotating the two groups of the drills, a moving device disposed to connect said two groups of the drills so that they are moved in the vertical direction according to the height of drilling positions of a material to be processed, and a positioning device attached to the gear box to regulate the vertical movement of the drills of the respective groups within a certain range and set the vertical position thereof.

Abstract: A multiple spindle machine comprising a drive unit having a plurality of drive shafts rotatable from a motor over speed change gears and a drilling head unit carrying a plurality of tool spindles connected by universal joint shafts to coupling elements which can be brought into and out of coupling engagement with said drive shafts by moving said units relative to each other.

Abstract: During passage of an I-beam through a punching press for punching holes vertically through its web, holes are also punched through its flanges by horizontally acting punches of the present invention. Four C-shaped punching heads are provided for the flanges. To permit punching closely adjacent holes, two punches are powered by a single hydraulic cylinder, unless one is deactivated. A joint gauge screw precisely adjusts gauge (the spacing between the two punches), and may be raised or lowered for centering as to web. Before each flange punching operation, the web is pressed firmly against a fixed block level with the web die. The piston of the hydraulic cylinder is of such large diameter that the varying positions of the punches will lie within the projected periphery of the piston rod.

Abstract: A multiple spindle inclined drilling machine includes a base having a bed inclined at an acute angle and with guideways upon said bed. A slide is reciprocally mounted upon said ways and is connected to a piston rod of a cylinder assembly mounted upon said base for effecting reciprocal movements thereof. A multiple spindle head is mounted upon said slide. An apertured fixture adapter is mounted upon said bed and lies in a plane at right angles thereto. A rotative drive mechanism is mounted upon said bed and has a variable speed output shaft. A plurality of drive spindles with individually mounted drills is adjustably supported upon and within said head and connected to said drive mechanism. An upwardly and rearwardly inclined fixture mounting plate spans and is secured to said adapter for supporting a workpiece mounting fixture.

Abstract: A drilling head system for use in simultaneous drilling of a plurality of holes in an I-beam web. The system is characterized by its motor driven control features which permit vertical and horizontal adjustment of a drilling platform and thus the individual drilling spindles with respect to an I-beam supported securely beneath the drilling head.

Abstract: A drill may be fed into a workpiece at a rate where the angle descent is less than the primary relief angle of the drill and wherein the extruding action takes place in 1/3 or less of the drill diameter. Unachieved rates of drill feed speed with high precision may be achieved without punching or crushing the material of the workpiece. In order to accomplish such drilling rates an improved feed mechanism, utilizing a positively driven lead screw is employed. In addition, in order to utilize the high drilling rate, a multiple bank of spindles is devised having an X-Y adjustable configuration used in combination with a worktable translated by a lead screw and nut combination. The lead screw of the worktable is disposed within the worktable in the proximity of the axis of symmetry to the worktable in order to minimize twisting moments to the worktable.

Abstract: A multi-spindle drilling machine which can perform drilling and tapping using a number of spindles in such a way that by dividing the pitch circle of the holes to be worked into several divisions, all holes are machined by a number of strokes of the spindle head. The setting of the tool spindles is done within a short time by a simple arrangement with the aid of a conventional electronic calculator.

Abstract: An arrangement for the drilling of holes to apply builders' hardware to windows in which an upper locating rail for accommodating a window frame is located between side members of a framework. A fixed drilling assembly with several spindles is located above the center of the locating rail. The spindles from the drilling assembly are lowerable. Two pipes above and parallel to the locating rail carry two auxiliary drilling assemblies which are coupled by a cable connection. The auxiliary drilling assemblies have several lowerable spindles and can be moved synchronously in opposite directions on the pipes.

Abstract: A drill apparatus including a stationary support frame, a drill carriage mounted on the stationary support frame for movement relative thereto along a generally horizontal path, a drill head mounted on the carriage and having a drill rotatable about an axis paralleling the horizontal path, a work engaging head mounted on the drill head for movement relative thereto along a feed path paralleling the horizontal path of movement of the carriage, and feed mechanism connected to the drill head and to the work engaging head for selectively moving the latter toward and away from the drill head. The drill head and work engaging head are adjustable as a unit in a vertical direction relative to the carriage to vertically position the drill and work engaging head. The relative positions of the work engaging head and drill head are sensed to control the direction and speed of relative movement of the work engaging head relative to the drill head.