Abstract: There is provided a new and useful tool for preparing tube or pipe ends for welding. The tool provides a central shaft, chamfering blade support means affixed to and coaxial with the central shaft and including a recess for receiving drive means, at least one support web and a chamfering blade attached to the at least one web; squaring blade support means coaxial with said shaft and positionable longitudinally along the shaft and rotatable with the chamfering blade support means, and having affixed to it at least one squaring blade; and alignment means for aligning the shaft with the tube or pipe end.

Abstract: A bidirectional buffing blade for tire rasps with cutting and dragging teeth of the same configuration with reduced drag, improved heat transfer and cutting teeth with a substantially constant radial rake angle and land width which does not change with wear.

Abstract: This relates to a tool assembly for repairing, and in particular, grinding a tap seat. The tool assembly includes a cutting tool carrier shaft and the primary features of the device are concerned with the guiding of the tool carrier shaft so that the tool carrier shaft is axially fixed without play in a guide while being free to rotate to effect the necessary machining operation.

Abstract: The milling cutter of the invention comprises a cutting section having a plurality of blades positioned on the surface and separated one from the other by flutes. At least two blades have one or more smooth segments, exhibiting an even and unbroken land and cutting edge, interspersed with one or more serrated segments containing a row of cutting teeth. The positions of the smooth and serrated segments are staggered from blade to blade so that in the course of one complete revolution of the cutter, each point along a surface being worked by the cutter will be contacted by at least one smooth segment and at least one serrated segment.

Abstract: When machining surfaces of workpieces, which are not directly accessible for the working tool, for instance due to projecting flanges or inclined wall surfaces, a back-working tool is used, comprising a rotatable spindle carrying a cutter means. The workpiece is located upon a table with its accessible face turned downwards, the driving component of the machine is located below the table, and the spindle is made to extend through an opening in the working table and a passage in the workpiece, to present the cutter means at the, normally, non-accessible face of the workpiece. During operation the cutter means is brought to exert a downwardly directed pressure upon the workpiece, which is transferred to, and taken up by the working table.

Abstract: A thread chaser for a lathe comprising a pair of detectors which signal a selected rotational position of the lead screw and the spindle of the lathe. The particular positions of both the lead screw and the spindle are transformed into a signal which is transformed into an alarm or alerting mechanism.

Abstract: A working stand for collarless electrical home worker machines, which machines have at the end of their drive shaft a threaded section for screwing on or attachment of a drill chuck. A machine holder is moveable up and down a vertical polygon guide column and can be fixed in position at whatever desired height. The guide column has a toothing, in which there engages a gear which is driveable by means of a hand crank, the gear being mounted in the machine holder. The machine holder has a pair of adjustable clamping jaws embracing the polygon guide column. In the machine holder a vertical shaft is rotatably mounted, which shaft on the upper end has an axially interior threaded section for reception of the drive shaft of the machine and on the lower end, which end projects from the machine holder, has a threaded section for the screw-on attachment of the drill chuck.

Abstract: A segment-shaped blade is provided for use in a rotatable cylindrical tool for machining elastic material, particularly pneumatic rubber tires for vehicles. The blade comprises pointed triangular teeth, which are provided on a convex periphery and are staggered and divided by radial cuts. Each radial cut extends only as far as to the root of the tooth concerned and each triangular tooth is divided by one or more radial cuts into at least two triangular prongs which have pointed tips that are much more slender than the pointed tip of the original tooth.

Abstract: A one-lip tool for deep drilling has a drill shaft, and a clamping sleeve and a drill head arranged at the opposite ends of the drill shaft. The drill shaft has a peripheral surface including two diametrically opposite surface portions. A chip groove is provided in one of the surface portions. A reinforcing formation, such as at least one inwardly extending rib, is provided in the other opposite surface portion of the drill shaft.

Abstract: A segment-shaped blade is provided for use in a rotatable cylindrical tool for machining elastic material, particularly pneumatic rubber tires for vehicles. The blade comprises teeth defined at the convex periphery by approximately V-shaped or circular or oval cuts. Said teeth include one or more triangular teeth and one or more trapezoidal teeth, which precede said triangular teeth in the direction of rotation of the tool and have prongs that are directed toward each other and are bent to different sides out of the plane of the blade. The triangular tooth or teeth are divided by one or more radial cuts into two or more triangular teeth, the prongs of which are bent to different sides out of the plane of the blade. The trapezoidal teeth have preferably legs of equal length. The two prongs of a trapezoidal tooth which are directed toward each other are defined in known manner by a punched circular hole, which is symmetrical to the periphery of the tooth.

Abstract: A method and apparatus for circumferentially machining an out-of-round workpiece in which the workpiece is rotated about its longitudinal axis at an irregular angular speed.

Abstract: To provide for positive guidance of a bolt formed with a conical enlarged intermediate portion holding a cutter bit by resilient deflection of the bolt in an enlarged recess portion of the cutter bit, the enlarged recess portion is formed as an elongated portion adjacent a bore in which the bolt is threaded, the elongated opening being additionally formed with conical surfaces concentric with the bore so that, prior to resilient deflection of the bolt, the bolt is positively guided and, thereafter, the elongated opening permits deflection of the bolt, the length axis of the elongated enlarged portion being directed towards an abutment surface on the tool body to securely clamp the bit against the abutment surface and determine the direction of resilient deflection of the bolt.

Abstract: An apparatus for drilling holes through batches of paper, the apparatus having a vertically movable drilling head, a movable table for supporting the batch of paper through which the holes are to be drilled at predetermined positions, and an indexing means incorporating elongate indexing members with holes or recesses provided therein corresponding to the positioning and spacing of the holes to be drilled, and a locating pin arrangement associated with and movable with the table and adapted for engagement in respective holes or recesses in a particular indexing member to set the table at the required positions for drilling operations. In one embodiment the locating pin arrangement is manually retracted and relocated, while in another embodiment the retraction and relocation is facilitated semi-automatically after each drilling operation.

Abstract: The invention concerns a method for producing a cigarette filter unit, in which filter elements are disposed on a porous or perforated covering strip and at least partially wrapped thereby and adhesively joined. The adhesive substance is applied to the covering strip along coating tracks which are at least approximately equidistant from each other and extended at an angle to the longitudinal orientation of the covering strip. The filter strand formed in this manner is subdivided by a cutting device.

Abstract: A spot facing tool is mounted on a work table with an arbor located beneath the work table and movable upwardly through an opening in the work table. A cutter holder is mounted on the surface of the work table with a cutter receptacle positioned in alignment with the arbor. A cutter is releasably retained in the receptacle. The arbor is movable upwardly through the opening of a work piece and into the cutter, and connected to the cutter. The cutter and arbor are moved downwardly until the cutter engages the work piece and rotation of the cutter and arbor causes spot facing of the work piece about its opening.

Abstract: A lathe comprising a rotor assembly which may be manually rotated and which has a peripheral portion around which moist pottery clay may be packed. A first cutting member can be mounted on a tool support for the lathe and used to cut grooves into the clay generally to the depth at which the surface of the object will be formed, whereupon a second cutting member with a continuous edge can be mounted on the tool support and used to cut away the clay ridges and shape the finished surface on the object. The object is then allowed to dry, which releases it from the rotor assembly.

Abstract: Abstract disclosed herein is a combination depth gauge and level for a drill characterized in that a plunger mechanism is attached to the drill by means of a band type clamp. Overlying the plunger, there is provided a ruler capable of sliding within the trackway to extend out beyond the drill and bit so that the depth of a hole to be drilled can be accurately gauged. The plunger mechanism includes a casing having a spring disposed therein and the plunger is biased against the spring and has a terminal portion preferably in the shape of a cross. In use and operation, the plunger is depressed against the surface upon which the drilling is to be done, and therefor the correct angle of the drilled hole can be assured. Once the plunger has been depressed up to the length of the ruler as it has been extended beyond the drill, the depth of the hole thus drilled can be accurately determined and controlled.

Abstract: A screw type shaving cutter and a method of producing the same. A large number of cutting edges are formed on the flanks of the thread of the cutter. Each cutting edge is inclined along a curve or a straight line in the trailing direction as viewed in the direction of rotation of the cutter in use. This shaving cutter is produced by forming a screw body by cutting a metal blank into a form of a screw, and forming a number of cutting edges on the flanks of the thread of the screw body by reciprocatingly moving a cutting tool on the flanks of the thread, while rotating the screw body continuously in one direction.

Abstract: A machine tool for machining a blank, such as round bar, comprising an electric motor which includes a motor housing having an axial bore through which the blank can extend, an annular stator arranged in said motor housing, and an annular rotor arranged in and coaxially to the annular stator, a chucking device for clamping the blank which extends through the axial bore and the annular rotor, and at least one cutting tool for machining the blank, one of the chucking device and the cutting tool being mechanically and immovably connected to the motor housing and the other being mechanically and rotatably connected to the annular rotor.

Abstract: A multi-spindle machine tool has a frame, a work spindle carrier and its rotatable work spindles indexably mounted on the frame, and a main drive shaft provided with a main brake and a main clutch. A plurality of clutches and selectively actuable to place the work spindles respectively into and out of driving engagement with the main drive shaft, and a plurality of selectively actuable brake devices are provided for the respective spindles. The arrangement is such that one or more of the work spindles can be arrested at a stage in a machining cycle by first disengaging the main clutch and applying the main brake so as to arrest all of the work spindles, and then actuating the appropriate ones of the clutches and brake devices so as to hold the appropriate work spindle or work spindles while the remaining work spindles are re-started.