Abstract: Electric welding device (5) for welding a fastening element (4), in particular a weld stud, on a workpiece with a stud holding means (1) comprising a conveying duct (2) which is connected at one end to a supply duct (3) and holds a fastening element (4) in its other end during the welding process and including a loading pin (6) which is displaceable to and fro along the axis of the longitudinal direction of the conveying duct. The pin has a shank part (13) and a head part (12) which can be brought to bear on a fastening element (4). At least the head part (12) of the loading pin (6) is an electrically insulating surface.

Abstract: A lightweight shaft 22 of generally tubular configuration, for with a golf club 20, is formed with a first layer 34 of a non-metallic composite material of a given density including graphite fibers 86 and cured epoxy resin 86. A second layer 38 of the shaft 22 is composed of a two foam half-forms 124, or a foam full-form 142, having a density which is lower than the given density and which are located around at least a portion of the length of the first layer 34. A third layer 40 of the shaft 22 is also composed of a non-metallic composite material including graphite fibers 86 and cured epoxy resin 86 which is located around the second layer 38 of the shaft 22. A portion of the third layer 38 is also located about the first layer 34 at a tip end 30 of the shaft 22.

Abstract: A stud welding device comprises a receiver and a T-shaped transverse passage through which a T-stud may pass to an axial bore of the receiver and into the path of a plunger which carries the stud into a welding position. A fulcrum is provided in the axial bore about which the T-stud can pivot or rotate to a deflected position that avoids jamming.

Abstract: An improved blind rivet assembly is disclosed, in which a plastics cylinder is moulded along a pulling stem of a long break mandrel. On setting the mandrel is broken within the cylinder providing the cylinder with an additional degree of shear strength, allowing the cylinder to be used as a support.

Abstract: A lightweight shaft 22 of generally tubular configuration, for use with a golf club 20, is formed with a first layer 34 of a non-metallic composite material of a given density including graphite fibers 86 and cured epoxy resin 86. A second layer 38 of the shaft 22 is composed of a two foam half-forms 124, or a foam full-form 142, having a density which is lower than the given density and which are located around at least a portion of the length of the first layer 34. A third layer 40 of the shaft 22 is also composed of a non-metallic composite material including graphite fibers 86 and cured epoxy resin 86 which is located around the second layer 38 of the shaft 22. A portion of the third layer 38 is also located about the first layer 34 at a tip end 30 of the shaft 22.

Abstract: A screw-nut fastener assembly in which a nut member is welded onto the head of a screw member having a variety of drive means, such as a straight slot, a cross recess drive or other suitable drive means.

Abstract: Stud feeder with an adapter (1), in which a conveying duct (4) and a stud feed orifice (3) designed substantially perpendicularly to the conveying duct (4) are provided, with a cylindrical or slightly conical stud holder (2) arranged coaxially to the conveying duct (4) and with a loading pin (10) which is capable of moving to and fro in the conveying duct (4) and which displaces studs (9) from the stud feed orifice (3) to the stud holder (2), characterized in that the conveying duct (4) is formed by a tubular gripper (5) which is slotted at least over a proportion of its length, and the gripper segments (6) are resilient substantially perpendicularly to their length.

Abstract: According to the present invention, the inputs of the pilot power supply and the welding arc power supply are connected to a common terminal and there is provided the switching means to selectively switch the operations of the pilot power supply and the welding arc power supply with the switching means switching the power supplies to activate the pilot power supply when a pilot arc should be produced. Thus, the power supply system requires only one secondary winding in the transformer, and the single secondary winding is sufficient to make it possible to use a small and low-priced transformer. This results in reduction in the size as well as the cost of the power supply system. In addition, since the switching means can be composed of the rectifying thyristors connected to the A.C.

Abstract: A welding apparatus comprising a hollowed tubular stud-receiving portion including an axially extending slit at the end thereof and a reduced inner diameter portion at the inner side of the end thereof; and an adapter opened to communicate with the stud-receiving portion for feeding a flanged stud having a shank and a flange formed at an end of the shank into the stud-receiving portion with the flange at the leading end. A collet is positioned to be axially slidable in the stud-receiving portion and provided with a bore at the end thereof to receive the stud shank in the bore, and at least the end portion of the collet is made of an electrically conductive material. Collet driving means is provided for driving the above collet to move the same between a retracted position in which the collet end is placed rearward of the opening of the adapter and a projecting position in which the collet end projects from the end of the stud-receiving portion to apply urging force to the stud.

Abstract: A system for first setting a blind rivet and then verifying the correctness of the set comprising a rivet setting tool to set the rivet and computer logic to verify the correctness of the set. The setting tool includes a jaw assembly for holding the stem of the rivet's mandrel fitted to an axially movable pulling shaft. Both the pulling force of the setting tool and the displacement of the pulling shaft are measured and the measurements are interpreted by an integrator to determine the total energy of the setting process. The determined total energy is then compared with an ideal total energy to assess whether or not the set of the particular rivet is acceptable. Other quantitative comparisons may be made against other ideal values.

Abstract: A non-blind rivet is disclosed that can be used to form a joint without the need for brazing, welding or threaded locknuts. The rivet 1 is placed in compression by opposing dies 15,20 causing a narrow region of the rivet wall to buckle forming a fold 24, the rivet thus being held to a workpiece 12 between a flange 6 and the fold 24.

Abstract: A blind rivet set verification system for setting a blind rivet assessing the acceptability of the rivet set. The system includes a remote intensified rivet setting tool and computer hardware and software. The tool comprises a displacement transducer that produces a displacement signal and a pressure transducer that produces a pressure signal. The transducers are connected to the computer which receives the distinct signals. These signals are interpreted to plot a displacement-versus pressure waveform and to determine the velocity of the movement of an air piston that responds to the rivet set by hydraulic pressure. Using the combined date of the velocity waveform and the displacement-versus pressure waveform, the breakload is identified and compared against predetermined ideal data to assess the acceptability of the set. The displacement reading at break is corrected for jaw slippage and offset of the air piston.

Abstract: A blind rivet comprises a rivet body with an axial through bore, a head at one end and inwardly extending lugs at the tail which are provided with recesses. The rivet may be set by a tool having lugs adapted to engage in the recesses, and may be used as a drainage passage or as part of a releasable fastener.

Abstract: An acceleration responsive device 30 includes a support 34 which supports a rod 46 between two spaced portions of the support. A weighted disc 48 is mounted for movement on the rod and is held by a spring 128 at one end of the rod 46. An indicator 50 is also mounted for movement on the rod 46 adjacent disc 48. A tube 62 is coupled to support 34 to facilitate swinging movement of the device 30 where, due to the acceleration thereof, disc 48 is moved along rod 46 and pushes indicator 50 along the rod. When the swinging movement ceases, disc 48 is returned to the one end of rod 46 and indicator 50 remains at the position to which it was moved. A scale reading of a decal 89 adjacent the moved indicator 50 provides a indication of the acceleration attained during the swinging of device 30. This reading can be applied to a graph to assist the user of device 30 in the selection of golf clubs having a shaft stiffness most appropriate for the user.

Abstract: A blind rivet comprising a mandrel 2 and a sleeve 3 is provided with two external grooves 11, 12 of different cross-section. This enables the rivet to set on the blind side of a workpiece to form a taper 19 increasing in diameter towards the blind side of the workpiece 20.

Abstract: A component installation tool of the type having a rearward stroke to accommodate delivery of a component to the front of the tool and a forward stroke to engage, deliver and install the component at a workpiece, the tool including a housing, a reciprocating mechanism contained therein, a feeder support mounted on the housing, a reciprocal magazine mounted on the feeder support for reciprocation between a component receiving position adjacent the tool and a position for delivering a component in front of the mechanism; and delivery means for delivering a component to a chamber in the magazine when the magazine is in the component receiving position and the mechanism is in the forward stroke.

Abstract: A golf club 10 includes a shaft 12 with a grip 14 assembled on a butt end 16 of the shaft. A club head 18 is mounted on a tip end 20 of the shaft 12. The shaft 12 is composed of steel and is formed with an intermediate section 22 having a plurality of sections 22a through 22n of decreasing diameter from the butt end 16 toward the tip end 20. A bulge 24 is formed in the shaft 12 near an inboard extremity of the tip end 20. The bulge 24 is formed with a central cylindrical section 26 with three cylindrical step surfaces 30, 32 and 34 at one axial end of the section 26 and three step surfaces 36, 38 and 40 at the opposite axial end of the section 26. The diameter of the central section 26 is greater than the diameter of the immediately adjacent portions of the shaft 12.

Abstract: An apparatus (28) facilitates application of one or more strands (24) onto a mandrel (20) which is mounted for rotation. The apparatus (28) includes a frame structure (30) which supports a confining device (46) and a receptacle (48) for receiving opposite ends of the mandrel (20) in a non-gripping manner. The frame structure (30) further supports a guide frame (80) which is positioned for movement along and parallel to the mounted mandrel (20) and which guides the strands (24) onto the rotating mandrel. A pair of strands (24) may be applied to opposite sides of the mandrel (20) to balance pulling forces which result in the mandrel due to tension on the strands. Ends (143) and (145) of a pin (142) extend laterally of the mandrel axis at one end of the mandrel (20) and are insertible into slots (126), (128), (134) and (136) formed in a coupler (116) of the confining device (46) to facilitate mounting of the mandrel with the confining device.

Abstract: A rod-straightening apparatus 28 includes a movable collet unit 30 for gripping a butt end 24 of a rod 20 to be straightened. The rod 20 extends from the collet unit 30 in a cantilevered fashion to a tip end 26 of the rod. An intermediate portion of the rod 20 is located in a straightener mechanism 32 which includes five spaced, non-rotatable, stationary, straightening blocks 96 located along one side of the intermediate portion of the rod. Four spaced, non-rotatable, movable, straightening blocks 99 are located the opposite side of the intermediate portion of the rod 20 opposite the spaces between the five stationary blocks. The movable blocks 99 are supported on a slide member 140 which is controlled to move the blocks into a position adjacent the intermediate portion of the rod 20 after the intermediate portion has been positioned adjacent the fixed blocks 96. Each of the blocks 96 and 99 is formed with a groove 106 of semi-circular cross section to form a confined passage.

Abstract: An impressionable medium, such as a element 56, is secured to an impact face 30 of a head 22 of a golf club 20. Alterations, such as grooves 46, are formed in a surface 42 of a target object 40. The object 40 is placed on a level surface such as a surface pad 64 with the grooves 46 being perpendicular with a plane of the pad and positioned for being struck by the element 56 and the impact face 30. Impression lines 66 are formed in the element 56 by the grooves 46 when the club 20 is swung and the head 22 strikes the object 40. Impression lines 66 are a representation of the angular relationship between a bottom 34, or grooves 32, of the head 30 and the plane of the pad 64 at the instant the element 56 and the impact face 30 strike the target object 40. This representation can be used to determine the dynamic lie of the club 20 at the instant the target object 40 is struck.