Abstract: The braking channel comprises a fixed channel section for each strand of bars, provided with two open-bottom chambers which are normally covered up by the sliding surfaces of a pendulum structure, the effect of which will brake the bars and let them come to rest. For bar discharge on to the cooling bed, the pendulum structure is swivelled rhythmically toward the right and left to positions in which the discharge openings reach underneath a pair of chambers. The kinematic inversion could also be applied, in which case the sliding section would be in a fixed position and the channel sections would move in pendulum fashion.
Abstract: A method and apparatus are provided for manufacturing a plurality of discrete layered articles having a non-rectangular cross-sectional shape from a web of batting of indeterminate length. The web is fed into an oscillating chute to define a plurality of layers. A continuous notch is defined in the layers to define a non-rectangular cross-sectional shape. A predetermined portion of the notched layers is separated from the following layers and secured to define a discrete article.
Abstract: A method and apparatus for forming a hollow sleeve for a blind fastener including the steps of forming a sleeve blank to have an enlarged sleeve head and a through bore having a radially inwardly extending shoulder forming portion, deforming the material on the shoulder forming portion to move axially toward the sleeve head and radially inwardly from the reduced diameter bore portion and substantially deforming the material away from the sleeve head and back towards the contour of the reduced diameter bore portion to form a sleeve stop shoulder.
Abstract: A metal can top rests on a tool seat for the purpose of riveting a pull-up ring to the metal can top. Riveting takes place with the aid of a dolly which moves back and forth relative to the tool seat. Transmitters are arranged in the tool seat to check that no foreign objects are present in it. Transmitters sense the movement of the dolly past a reference level as it moves towards the tool seat. In the riveting position the dolly presses the metal can top and associated pull-up ring against the tool seat, whereby the pull-up ring actuates a sensing pin and moves it to an indicating position which is sensed by a transmitter. The signals from the respective transmitters are received by a delay and control device.
Abstract: A fastener slider holding device comprising a slider holder having a slider mount on the top and a pull tab receiving recess in one side thereof, a spring-loaded sliding member mounted in the slider holder for vertical movement, a slider holding lever having an engaging pawl at the upper end thereof for engaging the pull tab of a fastener slider, an operation rod for moving the sliding member vertically and cam means for moving the slider holding lever between the pull tab engaging and disengaging positions.
Abstract: The method of manufacture of a hydraulic cylinder in which a piston for the cylinder is formed from a steel workpiece which is rotated and a bronze overlay fused into its surface while it is rotating, the overlay being continuously monitored and machined to a precise diameter. Thereafter, spaced ring grooves are cut into the piston.
Abstract: A method and system for installing a layered vessel wherein the method includes the steps of constructing the bottom vessel head section in an inverted position mounting the bottom head section on the vessel foundation, erecting a generally cylindrical construction frame having a plurality of annular work stations; substantially simultaneously with the erection of the cylindrical construction frame, constructing onto the bottom head a cylindrical inside shell liner and a hemispherical upper head inside liner and adding layers to the inside shell from the bottom upwardly with the addition of such layers occurring substantially simultaneously at various of the annular work stations. A system for accomplishing these steps is provided, including particular method for constructing the bottom head, and further, an annularly movable crane assembly is provided for the work stations.
Abstract: Method and apparatus for preparing an edge of a steel plate in a UOE process of making steel pipes, wherein a steel plate edge is positioned between a male die and a female die which have a curvature as desired in the edge, and held substantially horizontally by holding means outside the die, and the female die is moved against the edge and the male die by action of a lever which is pivoted about a fulcrum point which is inward of the plate edge and which has a moving means at the other end of the lever opposite the fulcrum point a predetermined distance from the female die. Advantageously, such method and apparatus enable formation of steel pipes using the UOE method having thicknesses previously difficult to produce without peaking of the produced seams.
Abstract: A roller is shown having an apparatus for cooling or heating the roller surface. The apparatus has essentially one or more chambers which are open relative to the roller surface. The chambers have a substantially square internal cross section. A fluid is fed in through the inlet ducts. During operation of the roller turbulence is formed in the chambers. The turbulence results in a longer retention time for the fluid in the chambers thus producing a greater cooling or heating effect for the amount of fluid fed in.
January 19, 1981
Date of Patent:
December 27, 1983
Escher Wyss Limited
Alfred Christ, Rolf Lehmann, Beat Schlatter
Abstract: A prevailing type torque nut, and method and apparatus for manufacturing such a nut. The nut is formed with two locally deformed locking portions which are formed in such a way that the remainder of the threads extending between the locking portions is substantially continuous, uninterrupted and undeformed. As a result, the nut offers greater control over the locking torque characteristics and permits a wider latitude of tolerances. In accordance with the method of forming the nut, the nut is locally deformed by applying pressure to its outer surface so that the threads will be displaced radially inwardly at localized portions. Means cooperate with the threads intermediate the locking portions to internally support the intermediate thread portions and thereby preclude any substantial deformation thereof during the forming operation.
Abstract: The present invention discloses methods and apparatus for rethreading damaged or incorrectly threaded tubular members such as tool joints, casing, and tubing for oil wells, which methods and apparatus are particularly advantageous for use with NC and CNC machines.
Abstract: A hot-rolling mill has a rough-rolling section and a finish-rolling section. These sections are transversely offset from one another and the end of the rough-rolling section is connected to the beginning of the finish-rolling section by a heating station. Within the heating station, at the end of the rough-rolling station, is mounted a take-up coiler for the rough product. This coiler can transfer its product coil to a pay-out coiler which is either movable transversely between the two sections so that it can move to the second path and feed the product into the second or is fixedly mounted at the beginning of the second (finish-rolling) section in which case a transporting device is provided which transports the coils from the take-up coiler to the pay-out coiler.
Abstract: A shell layer wrapping machine and method of positioning vessel sections. The machine has a first and a second band portion which are drawn together by a tensioning means. The second band portion is placed over the vessel section to be added and hydraulic cylinders selectively draw the second band portion away from the vessel section so that radial pressure is applied to the vessel section from the center portion outwardly to the ends of the vessel section.
Abstract: A technique is provided for engaging and disengaging burnable poison rods from the spider in a fuel assembly. The cap on the end of each of the burnable poison rods is provided with a shank that is received in the respective bore formed in the spider. In one illustrative embodiment, the shank is deformed to firmly secure the rod and attached shank in the spider bore. Pressing the shank in the direction of the bore axis overcomes the deformation to release the particular rod from the spider.
Abstract: The present invention relates to a nib for a forming tool of bolt head or nut, wherein a nib 7 to be used for a tool comprises a segment combination nib 2 composed of a plurality of nib segments 1, and a regular polygonal hole 6 is formed at the inside of the nib. Regular polygon is formed also at the outside of the segment combination nib 2, and a bush 3 having the same shape as the nib 2 is fitted thereto so as to reinforce the nib 7. Moreover, stress absorbing hole 9 is formed on edge portion inner circumference of the bush 3 or outer surface of the segment combination nib 2. Since the stress absorbing hole 9 serves to absorb stress concentration applied to the nib segments 1, the nib 7 is not liable to flaw in comparison to prior art and stopping of the machine for exchange of the nib 7 is scarcely needed. Accordingly a forming tool with effect of improving the productivity can be provided.
Abstract: A method of machining pipe at high speeds is disclosed that includes the steps of moving the pipe from a pipe rack onto a conveyor, moving the pipe longitudinally into the chuck of a threading machine or the like, clamping the pipe in the chuck, transferring the pipe from the conveyor to one or more steady rests, and supporting the steady rests on flexible wall air cylinders that will allow the steady rest to move as required to support the pipe which, because it is not straight, will whip and move laterally as it is rotated at the speeds required for high speed machining.
Abstract: An apparatus and process for monitoring the diameter and length of a helical corrugated metal pipe while the pipe is being formed from a strip of corrugated sheet metal. The apparatus includes a sheet metal strip length sensor located on a corrugated helical metal pipe forming machine. A series of length sensors are located along a formed pipe axis and are responsive to presence or absence of the formed pipe at their locations. A digital computer receives information from the sensors and is connected to various peripheral devices. The process of monitoring the diameter and length of the pipe involves measuring sheet metal strip length, determining presence of formed pipe at the various length sensor locations, and determining pipe length and diameter as a function of sheet metal width and length of sheet metal strip used.
Abstract: An apparatus and process is disclosed for forming a cap-like member from a blank of material. The apparatus comprises a die for shaping the cap-like member. A device is provided to co-act with the die for simultaneously forming both the member and internal threads within the member.
Abstract: Spot clinch .Iadd.apparatus and .Iaddend.method for forming a spot clinch joint by lancing and swaging two or more materials together using one complete stroke of a .Iadd.ram driven by a .Iaddend.power source in a single station, .[.the power source having a power stroke and a retract stroke, said.]. .Iadd.the .Iaddend.method utilizing an anvil, die and punch .Iadd.arranged in a tool body.Iaddend., .[.said.]. .Iadd.the .Iaddend.method comprising .[.moving either the punch or anvil.]. .Iadd.connecting the ram to the power source so that the ram is driven in a power stroke and a retract stroke, joining one of the punch and anvil to the ram and the other to the tool body, whereby one is made moveable .Iaddend.while .[.maintaining.]. the other .Iadd.is maintained .Iaddend.stationary .Iadd.in respect to the tool body .Iaddend.during the complete stroke of the .[.power source.]. .Iadd.ram.Iaddend., .[.moving.]. .Iadd.
Abstract: There is disclosed a technique for tightening threaded fasteners in which values of offset torque, initial tension rate relative to angle, final tension rate relative to angle and other joint related factors are empirically determined by instrumenting a plurality of fasteners of the type ultimately to be tightened. In one embodiment, torque and angle are monitored during tightening. Calculations are conducted, while tightening, to determine the tension prevailing in the bolt at a particular angle of advance. By using the calculated tension value and the particular angle of advance, an instantaneous position of threading advance on the tension-angle curve of the fastener is established. From this instantaneous position, it is determined how much greater angle of advance or how much torque is required to tighten the fasteners to a final desired tension value. The same technique may also be used merely to monitor tightening which is terminated by a different tightening strategy.