Abstract: Disclosed herein is method for assembling a pair of slide fastener stringers each having spaced sections in continuous rows of scoops and an apparatus for the same. The leading edge of the scoop row in the leading stringer is detected by a probe inserted into the guide groove of the binder member for the scoop row. The engagement of the leading edge and the claw of the probe retards the progress of the leading stringer thereby retarding the rotation of the feed roller for the leading stringer while increasing the speed of the rotation of the other feed roller for the trailing stringer, which is connected to the first feed roller through a differential transmission mechanism. After both of the stringers are brought into right alignment for exact engagement in the binder member, the claws disengage from the leading edges of the scoop row in the stringers and come out of the spaced sections. In this condition, the spaced sections in the stringers are detected individually by detecting lever means.
Abstract: A method and apparatus for production of couplings for joining together sections of metal tubing, the couplings being of the type comprising sockets having e.g. an annular recess carrying a filler metal, whereby the filler metal comprises a plastic composition which is applied under pressure to a selected internal area of a section of deformable tubing, thereby to form an indentation containing a deposit of plastic composition.
Abstract: A method and apparatus for forming a drum seam. A tray-like end plate having a cylindrical portion forming an indented shape and an outward extending end plate flange formed by the edge of the cylindrical portion is fitted into the end of a cylindrical drum body having a body flange extending outward from the edge thereof perpendicular to the cylindrical axis of the body with the end plate flange overlapping and extending along and beyond the body flange. A seaming chuck having a cylindrical forming face is fitted into the tray-like end plate for holding the body and end plate together with the forming face of the seaming chuck against the inner surface of said cylindrical portion and rotated for rotating the drum body and end plate. The seaming chuck has a fillet on the end adjacent the position where the end plate flange extends from the cylindrical portion and an inclined surface extending from the forming face outwardly thereof.
Abstract: The invention relates to arches for use in tunnels such as underground mine tunnels. These arches are composed of a bent metal beam often of "H" or "T"-section. Problems have previously arisen in accurately bending the beams to the required shape. The apparatus of the invention includes a D-shaped former which is rotatable relative to a roller. The beam is clamped to one end of the former and on rotation of the former relative to the roller, the beam is bent around the former so that it assumes the required shape, the ends of the beam being clamped to the former. A cutting device may be employed to cut the beam, while bent around the former, into three or more sections.
December 3, 1980
Date of Patent:
July 5, 1983
Caledonian Mining Company Limited
William Slattery, Thomas Brechany, Colin J. MacLeod
Abstract: A method for punching disc-like lock parts from a metal band or the like and for combining them to form lock mechanism units determining different lock combinations or the like. The punching of the parts to their final form takes place in a series of punching actions carried out by different punching units. Punching of parts having different details is carried out by having the pattern of the series changed for each punching stroke. In a final phase, the punched lock parts are separated from the band and collected in an order determined by a pre-selected combination code.
March 27, 1981
Date of Patent:
June 28, 1983
Oy Wartsila Oy
Walter Flander, Jukka Leikas, Vesa Hirvonen
Abstract: A unit (10) is employed such that sections of piling are separated and removed from the surrounding leg jackets to facilitate relocation of an offshore drilling platform. Unit (10) comprises a clamping section (20) by which the unit is secured in place and then utilized to lift a separated section of piling after operation of a cutting section (22). The cutting section (22) includes a rotatable plate (56), at least one cutting disk (68) mounted for movement on the plate, a cylinder (76) for actuating each cutting disk inwardly and outwardly, and a motor (62) for driving the plate.
Abstract: A blank rod of metal has a substantially Y-shaped cross section including a pair of V-shaped diverging legs each having a longitudinal rib on midportions of its inner surface. The blank rod is intermittently fed in a longitudinal direction as each of the ribs is pressed by a presser roll having series of die teeth into a succession of projections or teeth longitudinally spaced an interval from each other. The blank rod is then transversely sliced substantially centrally across each tooth on at least one of the legs into a plurality of individual slide fastener coupling elements.
Abstract: A method of loading a column of hollow rivets on to a mandrel for use in blind-riveting. The rivets are provided assembled head-to-tail on a strand made of resilient plastics material. The strand may be tubular or have at least a hollow end portion and be connected to the mandrel by being pushed on to a reduced end portion of the mandrel so that the strand grips the mandrel and the rivets are slid off the strand and on to the mandrel.
Abstract: At the end of a hot-rolling train, a metal length (bar or wire) is passed through a final roll stand and then through a cooling device. To keep the length under tension in the cooling device, it is pulled frictionally by an opposed pair of bridle rolls which are driven, while the length is passing, with a power input which would, in the absence of the length, be sufficient to cause a peripheral speed of the bridle rolls slightly higher than the rolling speed of the length. To prevent the leading end of the metal length being twisted or otherwise damaged on entry into the bridle rolls, the bridle rolls are driven at a slightly higher peripheral speed immediately prior to the entry of the metal length.
Abstract: An internally threaded fastener, such as a nut, includes a body having an axially extending opening with a side wall. A coarse internal thread convolution is formed in the side wall of the nut body. A fine thread convolution is also formed in the side wall of the nut body. The turns of the coincident coarse and fine thread convolutions are intermingled to enable them to engage a fastener having either a coarse or a fine external thread. An improved tap has a first section for forming the fine thread convolution and a second section for forming the coarse thread convolution. The two sections of the tap are interconnected in a coaxial relationship by a connector section having an axial extent which is less than the axial extent of the coincident coarse and fine thread convolutions. When a plurality of nuts are to be tapped, the fine thread convolution is tapped first.
Abstract: A cylindrical bushing is positioned over the shank of a screw member prior to forming threads on the shank. After the threads are formed, the outside diameter of the threads is greater than the inside diameter of the bushing so that the bushing is held captive on the shank of the screw. A cylindrical sleeve is then inwardly deformed so as to be permanently secured to the bushing. The opposite end of the sleeve facing away from the head of the screw shank extends beyond the bushing and forms a skirt which can be peened over the peripheral inner edge of a panel opening to secure the sleeve to the panel, thereby holding the screw captive to the panel. The end of the bushing next to the underside of the screw head has an increased internal diameter portion for accommodating a spring serving to bias the head and shank away from the bushing so that when the screw is unfastened, it will pop outwardly and release quickly any member to be secured to the panel.
Abstract: A cyclically operable spring coiling machine includes a pair of feed rolls for intermittently advancing wire longitudinally to a coiling station. A coiling arbor and a coiling tool at the station cooperatively form leading end portions of the wire to a coil spring configuration and a cutoff tool severs the coiled leading end portions of the wire to provide individual coil springs. A diameter slide carries the coiling tool and is movable approximately along the line of wire feed movement but on a side of the coiling arbor opposite the feed rolls. A second coil starter slide mounted on the diameter slide is movable along a line of movement in a lateral direction approximately at right angles to the diameter slide movement. A coil starter motor is mounted on the machine frame and a power transmitting means including a universal joint means connects the motor with the coil starter slide to move the latter between operative wire coiling and coil starting positions.
January 13, 1981
Date of Patent:
June 14, 1983
Erman V. Cavagnero, Stanley M. Waligura
Abstract: A method and apparatus for expanding tubes radially, particularly useful for anchoring tubes within a tube sheet in preparation for a subsequent hydraulic swaging operation. The apparatus includes at least one primary expander and at least one seondary expander. The secondary expander is axially positioned within the tube and has a larger cross-sectional area than the primary expander when considered with reference to a plane passing transversely through the tube. The expanders are compressed axially, thereby producing outwardly directed pressure against the interior surface of the tube. The primary expander produces the greatest pressure against the tube due to its smaller cross-sectional area. Axial compressive forces can be applied to the expanders by a draw bar that passes through them.
Abstract: A dishwasher spray arm having a top wall portion joined to a bottom wall portion. The wall portions are constructed to be formed from identical Z-shaped sheet blanks. The wall portion edges define securing structure which, while being different in the two wall portions, are each preselected to closely fit within the Z-shaped sheet blank configuration. The Z-shaped blanks define a continuing series arranged to be cut from a strip of sheet material with a common edge between successive blanks, effectively minimizing material wastage in the formation of the spray arm. In the illustrated embodiment, the top wall portion defines further structure differing from that of the lower wall portion.
Abstract: An apparatus for an assembly line for assembling articles comprising a moving table, an operating unit disposed near the table having a member movable in two directions, at least one Bowden cable having a wire therein, one end of the wire being connected to the member, and a pulling mechanism to which the other end of the wire is connected. The return of the wire can be accomplished by a return spring on the member or by a second cable wire pulled by the pulling mechanism. Multiple units can be powered and controlled around the same table by one pulling mechanism.
Abstract: An improved, thin walled fastener for retaining studs, rods, or the like is provided. The fastener is of the push-on type comprising a one-piece, generally thin, stamped sheet metal resilient body defining a generally centrally located stud retaining aperture for receipt and retention of studs, rods or the like. The body is preferably generally frusto-conical or dome shaped in cross section. The fastener is formed by punching or shearing a hole in a blank and then forming a generally dome shaped impression in the blank, the impression being generally coaxial with the axis of the punched hole. The required transverse extensions of the body are minimized by the utilization of the relatively smooth continuous edge of the punched hole rather than the burred edge of a punched hole as the stud retaining edge of the fastener stud retaining aperture.
Abstract: The hot strip mill includes a pair of coilers immediately downstream of and adjacent the finishing train. The coilers are vertically aligned and on opposite sides of the pass line. The strip coming out of the last finishing stand is immediately coiled in one of the vertical coilers, while the other vertical coiler may simultaneously be uncoiling and directing a previously rolled strip along the runout table to a coiler at the end of the runout table.
Abstract: A method and apparatus for forming rings that is particularly suited for forming plow rings from elongated lengths of stock having irregular cross sectional shape. A length of stock (12) is positioned against a mandrel (20), the end of the stock being pre-bent from a previous bending operation, with the free end of the stock extending beyond the mandrel. A movable bending element (24) is brought into contact with the stock opposite the point of contact with the mandrel, and advanced around the mandrel partially bending the stock. A clamp (82) clamps the partially bent stock against the mandrel and a cutter (98) then cuts the stock, leaving a partial bend in the newly formed free end of the stock, the cut portion of stock being clamped to the mandrel. The length of stock is moved away from the mandrel so that the bending of the cut portion around the mandrel can be completed.
Abstract: A parts feeding and assembling system including a plurality of stockers containing a multiplicity of parts arranged in a disorderly manner, a separating and feeding mechanism for separating one part after another from the parts in the stockers and feeding same to a predetermined station, a tentatively positioning mechanism for tentatively positioning each part fed to the station by the separating and feeding mechanism, a parts posture discriminating mechanism for discriminating the posture of each part including the position and direction tentatively positioned by the tentatively positioning mechanism, a parts posture changing mechanism for changing the posture of each part in accordance with the result of discrimination of the part effected by the parts posture discriminating mechanism and an assembling mechanism for assembling each part in a predetermined position of an assembly of parts after the part has had its posture changed.
Abstract: This invention selectively opens and closes the paired clamping members of a flexible skirt hanger by imparting predetermined forces to predetermined parts of said hanger in a predetermined manner. The hanger is held at a work station in a frame during a predetermined work operation which causes said forces to be applied. A pneumatically extended rod causes one of said paired clamping members to move in a predetermined rotational direction while a portion of said frame limits rotations of the other of said clamping members in said predetermined rotational direction, thereby effectively imparting a force to said other clamping member causing it to move in a direction opposite said predetermined rotational direction. The opposite rotational motion of each of said clamping members causes them to open to receive a garment therebetween. Means are provided to close said clamping members on said garment by removing said forces and enabling said clamping members to tend to resume their equilibrium position.