Abstract: In the field of fastening components together in such a way as to be able to transmit mechanical power, keyways and keys have been used; also, interlocking conical tapers have been used which are actuated either by a ring of screws or by oil-injection.The coupling according to the invention comprises an annular chamber housing an annular piston; the chamber and the piston have matching tapers. Oil is pumped into one end of the chamber to move the piston axially in one direction to cause radial expansion of the chamber to connect two components; oil is pumped into the other end of the chamber to move the piston in the opposite direction to disconnect said components.Uses of the coupling are, for example, to join the adjacent ends of coaxial shafts and to act as a locking bush to join concentrically arranged components.

Abstract: Tooling clamps by which tooling having mounting tongues can be attached to and detached from the working edges of the ram and bed of a press brake. Each clamp comprises a clamp body affixed to the working edge of one of the ram and bed. The clamp body provides a clamping surface. The clamp body supports a plurality of clamping bars aligned end-to-end. Each clamping bar has a clamping surface opposed to the clamp body clamping surface. Each clamping bar is affixed to the body by bolts which pass through perforations in the clamp body with clearance, so that each clamping bar is shiftable between a tool-clamping and a tool-release position. Spring means bias the clamping bars to their tool-clamping positions. A housing is affixed to the rear of the clamp body and extends the length thereof. The housing has a longitudinal cavity containing an actuating bar in abutment with the heads of the clamping bar bolts and a high pressure hose.

Abstract: A joint for two elements wherein one element has an internal peripheral surface disposed in surrounding spaced relationship with respect to the external peripheral surface of the second element, comprising a ring-shaped expandable tubular member disposed between the internal and external peripheral surfaces of the elements to be joined, and having an explosive charge enclosed therein to expand the tubular member when ignited into contacting engagement with the internal and external peripheral surfaces, and holding and sealing members disposed between the internal and external peripheral surfaces to be forced into engagement with the internal and external peripheral surfaces by expansion of the tubular expandable member to increase the holding and sealing properties of the finished joint.

Abstract: The disclosed invention is an apparatus for connecting two current conducting tubes, which also conduct fluids such as for example, a coolant. The connection apparatus conducts current from one tube to the other through a sleeve, the said tubes having a machined external surface against which the sleeve is pressed. A hose receiving hydraulic pressure is disposed between the sleeve and an external casing for providing a removable pressure against the sleeve for clamping the pipes in the sleeve. The present invention may be used in conjunction with a holder assembly for electrodes in an electrothermal smelting furnace.

Abstract: In a friction coupling comprising a shaft, a hub surrounding the shaft, a coupling sleeve disposed between the shaft and the hub, the coupling sleeve having an elastic hollow wall defining an internal cavity and comprising radially inner and outer peripheral wall portions respecitvely facing the shaft and the hub, and fluid under pressure in the cavity to force the peripheral wall portions against the shaft and the hub under a pressure sufficient for transmitting a torque between the shaft and the hub by the coupling sleeve, torque transmission is assured with a coupling sleeve consisting of a flexible tube composed of an assembly of a plurality of joined I-section strips, each strip having two transverse web portions and an interconnecting vertical web portion, the transverse web portions being joined to form the peripheral wall portions of the coupling sleeve and the vertical wall portions constituting load-carrying partitions in the internal cavity for transmitting peripheral forces between the shaft and t

Abstract: A positioner is provided for placing plaque or wire penetrameters, as used in radiographic inspection, in close proximity with the inner wall of tubing at any desired location along the tubing. The positioner head carrying the penetrameter is inflatable whereby it is positioned in the deflated condition, inflated to place the penetrameter against a weld to be inspected in the tubing wall, and then deflated during removal. If desired, the penetrameter holder may be used to center the radiographic source on the axis of the tube.

Abstract: The invention relates to a device for providing a friction joint by pressing a number of first elements against a second element by means of a pressure medium acting on said first elements. In order to obtain an improved ability of transmitting a torque and an improved stability regarding radial load, said first elements are so arranged that they encircle or are encircled by said second element and are acted upon by a number of mutually independent portions of the pressure medium, each portion acting on its own element.

Abstract: In a hydraulically expandable friction coupling for connecting a shaft to a hub there are two concentrically arranged cylindrical sleeves between which a pressure medium is enclosed. The pressure of said pressure medium against the sleeves is adjustable by adjusting means in order to transmit a predetermined torque between the shaft and the hub. In order to ensure slipping between the outer sleeve and the hub when said predetermined torque is exceeded i.e. when the coupling is overloaded, the outer sleeve is formed with a greater wall thickness than the inner sleeve or at least one additional sleeve is fixed on the outside of the outer sleeve. The wall thickness of said additional sleeve is such that the combined wall thickness of the outer sleeve and the additional sleeve exceeds the wall thickness of the inner sleeve.

Abstract: A coupling includes at least one thin-walled sleeve which forms an axially extending defining wall of a substantially annular chamber. The chamber is arranged to be supplied with a pressure medium to elastically deform said sleeve in a radial direction into clamping engagement with a surface on an element which is to be connected to the coupling, the shape and dimension of said surface substantially corresponding to the shape and dimension of a surface on the sleeve remote from said chamber. The chamber has extending therefrom a channel arrangement which is arranged to cooperate with coupling-release means which can be activated by relative movement between said surfaces, or by a given torsional deformation thereof, to a state in which pressure medium can flow through said channel arrangement from said chamber to relieve the chamber of pressure acting therein.

Abstract: A cutter block for attachment to a rotatable drive shaft is composed of two semi-circular elements which are connected to one another and together form a torus. Each element has a cavity therein which is defined on the radially inner side of the element by a flexible membrane. To attach the block to the shaft, the block is slid over the shaft and the cavities are then pressurized to distort the flexible membrane. The cavities are connected to one another in gas-tight manner by a passage sealed by an O-joint.

Abstract: A corrugated paperboard slitter scorer has slitting and scoring heads movable individually or as a group along an expandable shaft by way of a master shifter. The expandable shaft provides a friction drag to maintain a head in position until all heads are simultaneously locked to the shaft.

Abstract: An apparatus for preventing transmission of vibration of a vibration machine to the hands of an operator includes a vibration-absorbing action of an elastic air bag fitted as a grip to the vibration machine.

Abstract: Rings formed as slitter knives or counter-members are secured against axial displacement from selected positions along a slitter roller by inflating a number of pneumatic tubes carried in recesses formed in the circumferential surface of the roller, the recesses running lengthwise of the roller and being all located on one side of a plane containing the rotational axis of the roller. A flat is formed on the roller at a position diametrically opposite the pneumatic tubes to provide more positive location of the rings. Air is supplied to the tubes via a hollow shaft fitted to one end of the roller, the tubes being in pairs each formed from a tube of U-shape, the legs being disposed in adjacent recesses one end being connected to the hollow shaft and the other closed. Balancing of the roller is obtained by the use of different length set screws to which different numbers of washers are fitted, and also weights may be fitted to the inside of the roller.

Abstract: A shell and shaft subassembly for holding a shell or roller fast in a non-rotating relationship with respect to a supporting shaft, the shell being secured in its non-rotating relation to the shaft by a subassembly comprising a complemental pair of concentrically-arranged annular sleeves or tubes defining in the space therebetween, cooperantly with spaced opposite end rings, a closed annular chamber. The sleeve walls are each provided with an endless, continuous, serpentine or sinuous groove which meanders from end to end, the groove or sinuosity on the inner sleeve being disposed exteriorly of the tube, and the groove or sinuosity on the outer sleeve being disposed interiorly of the tube. With the grooves facing each other within the annular chamber. Sinuosity defines an endless or continuous thin walled or membranous area winding sinuously with respect to a periphery of each sleeve.