Abstract: A rotary cutting device for removing spot welds includes an upper body section telescoping into a lower body section and a cutting bit secured in the upper body section and extending through the lower body section. The cutting bit has a flat cutting end so that a spot weld can be completely removed from one metal piece while causing no damage to the metal piece it is welded to. An expansion spring yieldably holds the cutting bit away from cutting engagement with a work piece when not in use. A stop means is provided for controllably limiting the potential downward movement of the cutting bit during use. Two pointed projections extend from the distal cutting end of the device for engaging the work piece to keep the device in proper alignment with the spot weld during cutting.

Abstract: The invention relates to a milling device for producing cutting chamfers on knives provided with roof-shaped cutting edges, preferably Koenigsfeld knives, which milling device comprises a milling arbor; a milling tool clamped thereon, the milling tool having cutting edges which are adapted to the cutting chamfers which are to be produced on the roof-shaped cutting edges of the knives; and at least one further milling tool mounted on the milling arbor so as to be non-rotatable relative thereto but movable to a limited extent in the axial direction of the milling tool; and wherein protrusions and recesses are formed in the mutually facing sides of the two milling tools at least in the region of their cutting edges, and the protrusions on one milling tool extend into the recesses in the other milling tool for the purpose of producing alternating overlapping of the cutting edges of the milling tools.

Abstract: A substantially square hamburger roll having one face indented to form a rim around the perimeter and a bakepan to form the same, said bakepan having square cavities extending inward from one face and a square re-entrant projection extending centrally upward into each cavity a distance less than the depth of the cavities to form a peripheral gutter in each cavity to form the rims around the rolls baked in said bakepan.

Abstract: A pie crust dough roll out and trimming mold assembly includes a flat base element having a roll out surface thereon and an array of apertures therein for accommodating various size ring mold elements and for preventing their slippage relative to the base by cooperating with protuberances extending from the bottom surfaces of the rings. The ring elements have narrow top surface areas for pinching off excess pie crust dough during the rolling out process, while having wide bottom surfaces for strength and stability. An inclined, downwardly sloping surface connects the narrow top surface area and the outside diameter of the ring elements. The ring elements include internal diameter walls that correspond in height to the desired thickness of the pie crust disc, the internal diameter of the rings corresponding to the external diameters of the desired pie crust discs.

Abstract: A hobbing machine comprises a tool support member operably provided on a machine frame and having a tool support shaft, a workpiece support member operably provided on a machine frame and serving to support a workpiece and a tool mounted on a tool support shaft and serving to cut the outer periphery of a workpiece. A drive motor is provided on the tool support member in the neighborhood of the tool and has a motor shaft coaxial with the tool support shaft. A coupling providing shock absorbing effect is provided between the motor shaft and tool support shaft, whereby the tool in directly driven by the motor.

Abstract: A jaw chuck for mounting on a spindle in which a chuck body is provided which has chuck jaws radially reciprocable thereon. A piston is reciprocable on the chuck axis and cooperating elements of cam means are provided on the piston and the jaws for positively moving the jaws on the chuck body. A fluid piston is connected by a draw bar to the jaw actuating piston for actuation thereof. The pistons are normally movable within that range in which the cam elements are engaged but can be moved to a position where the cam elements are disengaged to permit the jaw elements to be removed from the chuck body. Detent and safety means are provided for preventing the jaws from coming out of the chuck body except when deliberately removed therefrom.

Abstract: A horizontal bed turret lathe including a slant carriage adapted to achieve the advantages of a slant bed configuration while avoiding the disadvantages thereof. The slant carriage is mounted on a pair of horizontal bed ways offset to the rear of the spindle axis, and includes a pair of inclined slide ways for supporting a tool slide. A turret mounted on the tool slide has a pair of toolholders arranged in stacked configuration on the turret axis. For reducing interference from non-working tools and the turret assembly itself, the turret axis is skewed with respect to the spindle axis. To compensate for the skew of the turret axis, the toolholders are frusto-conical in shape, the degree of conical taper allowing each tool to be indexed to a normal operative position. An orderly tool arrangement is achieved by mounting end working tools in the upper toolholder and turning tools in the lower toolholder, the overall configuration allowing both end working and turning tools to operate up to the face of the chuck.

Abstract: A machine tool having relatively rotatable elements joined by a toothed coupling.

Abstract: A tool holder for easy and quick insertion in and removable from a high speed spindle of a machine tool. The tool holder is positively driven by the spindle by means of a quickly engagable and disengagable clutch. A drive adapter is insertable in the bore of a conventional spindle and has a drive clutch element which is disengagably connected with a complementary drive clutch element of the tool holder. The tool holder also has a resilient, flexible means in the form of an O-ring which frictionally engages the interior of the spindle so as to prevent inadvertent removal of the tool holder when reverse rotational forces are applied on the tool or at lower speeds of the spindle. The resilient, flexible means is centrifically urged in tight frictional engagement with the spindle when the latter is operating.

Abstract: A drill for use in boring machines has a tool holder with two cutter bars having cutters projecting radially therefrom. The cutter bars are movably mounted in a radial direction in a recess passing through the tool holder. The tool holder includes a base part and walls projecting therefrom forming the recess therebetween. The cutter bars are arranged in this recess in end-to-end relation and are of a width substantially equal to the width of the recess. The base is provided with two slots therein communicating with the recess, the slots being offset with respect to each other and each extending from the outside of the base in a direction substantially parallel to the length of the recess up approximately to the central axis. Bolts engaged in the parts on opposite sides of the slots can be tightened to deform the walls of the recess so as to clamp the cutter bars therebetween.

Abstract: A rough-cut blank is machined to provide a spark erosion electrode for use in the manufacture of an extrusion tool by bonding the blank to a base plate, fixing the base plate to a milling machine table and milling the blank. The milled blank is subsequently detached from the base plate by breaking the bond between the blank and the base plate.

Abstract: To form a laminated plastic article having at least one thermoset layer, a first resin is injected into a mold from a first nozzle and solidified as usual. Then the dies are separated by a predetermined distance to create an additional cavity for a second resin layer on the solidified resin and at the same time provide a fluid passage, which connects the cavity to a second nozzle and is defined and sealed by opposite faces of the dies at their particularly shaped portions. The passage is unsealed by thoroughly separating the dies after injection of a second resin therethrough and solidification of the resin.

Abstract: A tool holder for machine tools particularly adapted for use in turret structures having a plurality of retainers for holding a plurality of such tool holders each carrying a different tool such as a drill, tap, reamer or other metal working tool. The disclosure relates to a mechanically actuated tool holder having mechanical locking means adapted to snap into annular retainers in a turret structure of a mechanical tool and wherein locking means alternately is operable to hold the tool holder in the turret retainer ring and to lock the tool holder onto an annular ledge of a stub means carried by a rotatable and reciprocable machine tool driving spindle.

Abstract: A rotary cylinder has a tubular drive shaft to one end of which is connected a collet holder and to the other end of which is connected an adjustable stop mechanism. A drive rod extends through the shaft and is connected at one end to a collet and at the other end to a fluid operated reciprocal drive mechanism.

Abstract: An automatic tool turret for a lathe including a base adapted to be detachably secured to the lathe way. A tool carrying head is mounted on the base for movement between a clutched work performing position and unclutched head rotating position. The movement is hydraulically accomplished so that the head is supported by a hydrostatic bearing created by the hydraulic fluid. The fluid pressures generated during the movement of the head between its clutched and unclutched positions is used to initiate a work performing operation and to initiate turning of the head.

Abstract: The weight of a pivotally mounted boom in a crane is compensated for in part by a counterweight which is suspended from one end of a compensating cable trained over a deflecting pulley at the top of the supporting crane structure. The other end of the cable is connected to a first fastener near the pivot axis of the boom by a rod and to another fastener on the boom remote from the pivot axis by a flexible chain. The rod is shorter than the distance between the first fastener and the deflecting pulley so that the compensating cable and the rod are longitudinally aligned before the boom reaches its steepest position, the boom thereby being relieved from the then unnecessary action of the counterweight.

Abstract: In a cutting apparatus or punch press for repeatedly cutting or punching a work shape from a continuously travelling web or sheet of paper, cardboard or similar material, the cutting dies or punch tools are mounted for reciprocation longitudinally in the direction of feed of the web or sheet on press platens that open and close and sustain the punching forces but do not themselves move in the direction of feed. By means of a drive mechanism operating in synchronism with the opening and closing movements of the press platens the punch tools are accelerated from rest in the direction of feed to attain the speed of the work web or sheet at the instant of punching and then are decelerated to rest and moved in reverse back to the initial position of the cycle. The stroke of the reciprocation may be adjusted to suit different lengths of the work shape to be punched.

Abstract: An improved boring head assembly that is designed for being easily and accurately adjusted to different standard sizes of boring diameters so that it can be accomplished by persons without having a great deal of skill; the device consisting of a spindle for insertion into a chuck of a machine, and an adaptor adjustably mountable on the end of the spindle so to be axially offset a particular amount which is accomplished by means of specifically dimensioned blocks interchangeably placed therebetween, the adaptor serving to hold a boring bar which on its end retains a flying cutter.

Abstract: A cutting tool having one portion including a cutting head and another portion including a stem, the portions being separately produced from the same or different metals, or nonmetals, ceramics and the like, and then connected together in coaxial relation by a slip, press, or shrink fit of a polygonal shank of uniform cross section throughout its length on either one of said portions into a complementary polygonal socket in the other portion. Novel means are provided for adjustment of the portions generally radially of the cutting axis to offset differences in concentricity due to manufacturing errors and to assure firm and precise coaxial relation of the assembled portions.

Abstract: A core chuck comprising radially movable exterior jaw members, means operative in response to a relative rotation between the jaw members and those means to apply a radially outward force to the jaw members, and biasing means for urging the jaw members toward a predetermined radial position. The biasing means comprise a band spring disposed in axially aligned recesses in surfaces of the jaw members, at least one of the recesses being provided with spring retainer means preventing removal of the spring from the recess in a radial direction.