Abstract: This invention relates to a suspension apparatus for control devices which can be assembled from a connection flange or connection rotary joint, support beam sections, elbow joints, or intermediate joints which can be connected with a wall or the body of a machine, and a coupling unit which can be connected to the control device. The support beam section comprises an essentially U-shaped base profile section and a cover profile section closing the same. The base profile section is divided, by means of a separating bar parallel to its crossbar, into a support part constructed as a closed hollow profile and an open U-shaped mounting part opposed to the bar. The connection bars, which proceed in a longitudinal direction in the support part and in the mounting part, are integrally formed with screw mountings.

Abstract: A knuckle joint in which a first piece with an eye enters a jaw between two corresponding projections of a second piece having a first and a second eye respectively formed therein, and is retained by a pin member, wherein the pin member comprises a pin having a first end with a button fixed thereat and a second end. The pin passes through the eye of the first piece, which then retractably protrudes the button out from the first eye of the second piece and extends the second end to a position near the second eye of the second piece. A stopper has a protrusion which is passed through the second eye of the second piece, extending into the eye of the first piece, and joined with the second end of the pin. A slide block is passed through by the pin and inserted within the eye of the first piece, retractably protruding into the first eye of the second piece.

Abstract: A three directional load reacting mount connects first and second members together through a plain, self aligning ball bearing. An axial member extends through the ball of the bearing. An axial force on one of the members is not transmitted to the other through the bearing but at an axial load bearing element offset from the bearing. The offset is in the direction of a supporting structure connected to the other member thereby reducing the moment transmitted to the supporting structure from the axial force.

Abstract: A pistol holster with a limiting swing clutch having the holster and belt-loop separated from one-another by the engaged swing clutch face-to-face elements, all held in a tightly compressed state susceptible of limited flexing movement against a flexible leather washer, all mounted on a female bolt's female-threaded shaft between underface flat surfaces of the heads of the female bolt and the mated male bolt.

Abstract: A shift rod for the manual preselecting and shifting of transmission gears is constructed in two rod segments. The two rod segments are connected with one another by means of a vibration-damping coupling joint. The coupling joint is housed in a damping body that, in longitudinal direction of the shift rod, is developed to be softly resilient over a short distance, but with a subsequent strong spring progression, is developed to be very stiff with respect to torsion in twisting direction of the shift rod.

Abstract: A universally adjustable mounting device including a first mounting plate. Means for releasably connecting the first mounting plate to the first joint member in a selectively positionable and adjustable manner are provided. Manually adjustable locking means for retaining the first mounting plate and the first joint member in a selected position are included to resist any loosening of the selected position due to vibrational type or any other type of stressing forces that the device may undergo while in service in a moving vehicle. A second joint member and means for releasably connecting the first joint member and the second joint member, in an axially and rotationally adjustable manner, are provided to permit the device to be adjusted to accommodate various shaped and sized areas in the vehicle in which the device is to be installed.

Abstract: A quick connect/disconnect assembly includes a headed bifurcated primary member or post having a secondary or locking means releasably, slidably and swingably related thereto for movements between locked and unlocked positions.

Abstract: A novel dual load path connector for pivotally joining a movable member to a structural member, is described which comprises a pair of spaced apart lugs attached to a first of the members, each of the lugs including an outwardly projecting boss, a clevis disposed between the lugs and attached to the first member, a pivot pin, received by the lugs and clevis, which may support a self-aligning bearing between the ends of the clevis, and a connecting link assembly including a first connecting link pivotally supported at a first end on the pin and connected at the other end to the second member, and a pair of second connecting links pivotally supported at respective first ends on the bosses and at the second ends to the second member, the first connecting link, pin and clevis providing a first load bearing path between the structural and movable members, and the second connecting links, bosses and lugs providing a second load bearing path.

Abstract: A handbrake arrangement for a single cylinder, truck-mounted, railway car brake assembly comprising a lever system mounted on the body of the single brake cylinder, which is, in turn, mounted on one of a pair of truck brake beams. The lever system is connected to the handbrake chain, so that operation of the handwheel effects relative movement between the brake cylinder body and brake cylinder push rod. This results in the truck brake beams being spread apart into braking position in the same manner as occurs during a pneumatic brake application, via the respective brake beam, transfer levers and force-transmitting connecting rods that extend between the brake beams.

Abstract: A parallel beam brake apparatus for dual and triple axle trucks and a single beam brake apparatus for single axle trucks each comprise spaced, pivotably mounted bell crank levers which engage a fluid operable actuator between one pair of arms and engage a pair of push rods with the remaining arms. Improved spherical joints between the arms and the push rods facilitate force tranmsmission without allowing push rod rotation. A unique pivot geometry between the bell crank levers and the brake beams facilitates assembly and improves stress distribution between the levers and the beams. The actuator includes a slack adjustor mechanism in which a spiral power spring unwinds to drive a lead screw and take up slack or is wound by the rotating, translating lead screw to add slack.

Abstract: A toothbrush having two arms pivotally jointed with cleansing means at the other extremities of both arms. The jointed section comprises several methods for manipulating and indexing the arms relative to each other to permit brushing in various parts of the mouth. The jointed section is composed of bifurcated bridging members for one arm, and an accommodating bar at the other arm disposed to lie between the bridging members. The bridging members and bar are pivotally held together by a control pin which can be manipulated to permit one arm to move relative to the other. The bar and bridging members may be frictionally in contact with each other or can be connected thru gearing and socket devices each disposed to function through special control pins for causing the engagement and disengagement of the said gear and socket devices. Simple finger manipulation of the controlling pin causes selective indexing of the toothbrush arms relative to each other.

Abstract: A clamp device for interconnecting two entities, one of which may be a support and the other of which may be an item to be supported with the clamp device including a stem and a plurality of jaws connected to the stem at one end thereof, a hand manipulated nut threaded on the stem for causing the jaws to engage and be connected to one of the two entities and means on the other end of the stem to engage and be connected to the other of the entities. The jaws are constructed in various shapes, sizes, configurations and arrangements with the closing force for the jaws being provided by manual rotational movement of the screw-threaded nut which has a surface engaging with an extension surface on the jaws to move the jaws to entity engaging position and retain them in that position. The other end of the stem has various structures providing connection to the other entity and the stem also includes an aperture in one embodiment to receive and retain a supporting rod for a flag or other similar structure.

Abstract: Clevis connection includes a clevis bushing having a bushing sleeve, with a shoulder at one end having a tapered inner diameter, and a longitudinally extending slot through the shoulder and a portion of the length of the bushing sleeve. The bushing is inserted through aligned holes in the clevis arms and connecting lug. Then a tapered expander collet is inserted into the tapered inner diameter of the bushing shoulder and a bolt is inserted through the collet and bushing so that the bolt head loads through the collect which expands the bushing to cause pre-stress on the surrounding lug and a pre-load clamping of the connecting lug to one of the clevis arms, and cause pre-stress on the other clevis arm.

Abstract: A process for manufacturing a universal joint mainly by cold forging which comprisesa blanking step to punch out a blank having a pair of fork member portions projecting from one side thereof and a hub member portion out of a sheet metal or coiled sheet metal material,a press-working step to form bolt holes on the lug member portions and projections on the opposite side thereof by extrusion,a forming step to bend each root portion of each pair of fork member portions to bring them to a fixed height from the hub member portion,a primary bending step to form the hub member portion into a cylindrical shape,a secondary bending step to project the lug member portions in parallel to each other from said cylindrically shaped hub member portion after completion of the primary bending step, anda press-reforming step to straighten the configuration of the formed product after the secondary bending step.

Abstract: The connector comprises a first element having one end provided with a single first eye, a second element having one end provided with two coaxial second eyes axially spaced to receive between them the single eye, and a pivot pin insertable through all the three eyes, when the latter are coaxially aligned, to thereby join the two elements together. The pivot pin consists of two parts insertable through the eyes. Each part has a first end provided with a first engagement means and an opposite second end provided with a resilient second engagement means, and each second eye has at its axially outer side a third engagement means, whereby on full insertion of the parts through the eyes the parts and the second eyes are interlocked by the engagement means.

Abstract: Individual movable contactors of a circuit breaker are made up of a pair of conductors. The first conductor has one end bifurcated to form a pair of legs separated by a slit. At the open end each leg has a curved inner portion the opposed curved portions of the two legs defining a receptor space which is substantially circular in cross section. The second conductor has one end whose cross section is substantially circular and which fits within the receptor space and makes a good slidable contact therewith, and the other end which supports the main contact. Provision is made for rotating the second conductor about its circular end for opening or closing connection to the main contact.

Abstract: A joint for connecting together two frame members of a machine for relative movement wherein one of the frame members has flexible portions which during assembly of the joint are flexed to enable the joint to be assembled without shims and without exceeding predetermined maximum stresses on the parts of the joint.

Abstract: A pinion and upper and lower internal gears are adapted to be subassembled to a hub portion of a steering wheel prior to mounting on a steering shaft. An anchor leg is provided to the lower end of the lower internal gear and has a pair of opposed lateral sides which are opposed in the lateral direction perpendicular to the diametrical direction of the lower internal gear. A location arm is provided to the upper end of a stationary column and has a bifurcated upper end to loosely receive therewithin the anchor leg. The bifurcated end of the location arm is resiliently deformed by a screw driven thereinto to contact the lateral opposed sides of the anchor leg.

Abstract: A clevis includes a shaft and a pair of tangs bifurcating from one end of the shaft. One of the tangs is an integral extension of the shaft. The other tang is formed from a mating piece and is affixed to the shaft by a welded joint which extends along the axial dimension of the shaft. The clevis is preferably formed of cold drawn wire steel and the tangs and welded surfaces are formed by bending and coining operations.

Abstract: A self-locking, safety hitch pin for connecting the tongue of a farm implement to the drawbar of a towing vehicle, such as a tractor. The pin has a handle pivotally connected to it at its upper end, the handle extending to the lower end of the pin to prevent it from inadvertently falling out of the connection. A spring-biased locking member is combined with the upper end of the handle and pin to automatically lock the handle in place when the handle is lowered to a closed position.

Abstract: A handle extension provides a means by which a control on a power-operated device, such as a snow thrower, can be manipulated from a more convenient and safer location. A rod-like control extension handle is coupled to an existing control handle or lever by a unique connecting bracket which is so configured that when the present invention is installed by an unskilled person, the said connecting bracket in combination with the said rod-like control extension handle prevents binding of the present invention with the existing control handle thereby permitting more precise control of the power-operated device.

Abstract: A clevis end connecting rod such as a truck lever connection rod, brake cylinder push rod, brake rod end, etc., utilized on railroad cars and the like, is manufactured by forming a piece of straight metal bar stock with a central offset and then transversely severing the bar stock at the central portion of the offset and then realigning the severed bar ends with each other to form a bifurcated jaw having laterally spaced side portions merging to contact at their offset ends with their surfaces of severance lying in a common plane. One end of an elongated piece of metal stock is butted up against the severed end surfaces and there welded. Aligned bores are provided in the bifurcated arms to receive a common connecting pin therethrough.

Abstract: A brake lever connecting bar is formed from a tube, the ends of which become jaws by the insertion of a preformed insert that engages the parallel side walls of the tube increasing the wall thickness in which bearing surfaces are then cut. The remaining parallel tube walls are notched defining the reinforced jaw configuration required to connect brake levers on a typical railway car brake mechanism.

Abstract: The present invention provides an improved panel fastener system for insulated slab panels of the type having one housing holding a hook assembly having a hook member and opposed hubs extending from a cam connected to the hook member; and a second housing having a pin adapted to receive the hook of the hook member. The invention provides an assembly method for mounting the hook member into the first housing including opposed resilient walls perpendicular to the front wall of the first housing forming a vertical slot adapted to receive the hook member. A pair of inclined planes lead from the rear portion of the housing to a pair of hub housing receptacles formed in the walls. The extended hubs are inserted into the slot from the rear of the housing along the inclined planes. The resilient walls are pressed back until the hubs reach the receptacles, at which time the biased walls snap back into their original configuration, capturing the hubs and the hook member in the first housing.

Abstract: The yoke is made from a rolled blank or a tube section and comprises a split hub 5 provided with a clamping device 6 formed by wings 7, 8 of the hub. Each of the wings is provided with a bolt aperture and the outer surface 11, 12 of at least one of the wings of the clamping device has, at least around the bolt aperture, a portion rendered planar by compression of the material of the wing.

Abstract: The yoke formed by the blanking and rolling of a blank comprises branches 1, 2 and a hub 23 which is provided at the end thereof remote from the branches of the yoke with a guiding chamfer for a shaft adapted to receive the yoke. The chamfer 10, 12, 16, 17 is formed by a cold stamping operation.

Abstract: This invention pertains to an improvement in box joint tools and particularly for reducing play resulting from wear of the members forming the box joint. The box joint is formed in the usual manner. This improved joint is used when or where wear develops or may be utilized with new tools at the time of assembly. A first portion outer member of the box joint is machined to provide a counterbore and an enlarged bore in this member portion. A counterbore is also formed in the second outer member portion and extends to about one thirty second of an inch from a central jaw tongue portion. This counterbore provides a flexure portion with a smaller bore axially coincidental with the axis of the central portion. A pivot pin bushing has a threaded bore and is sized to be a press fit in the formed counterbore and enlarged bore of the first outer member. This bushing is mounted in the first outer member and the shank portion extends into the tongue portion of the central jaw.

Abstract: A pivotable connecting device adapted to transmit rotary motion from a drive member to a driven member while minimizing the effect of torque thereon. The drive member is provided with a fork having first and second shanks each with a threaded hole. The driven member is provided with a coupling plate having a corresponding smooth hole. A screw member for insertion in the holes is provided having a smooth central portion and first and second threaded ends. The diameter of the first threaded shank hole is greater than that of the coupling plate smooth hole, and the diameter of the latter is at least as great as the diameter of the second threaded shank hole. The pitch and helix of the first and second threaded shank holes are identical thereby permitting simultaneous tightening of the first and second threaded screw ends into the corresponding first and second threaded shank holes.

Abstract: A folding pallet (10) is disclosed which has frame members including upright posts (11,12) base members (16) connecting the front and back posts at their bottoms, top side members (14) connecting the front and back posts (11,12) at their top ends, the top cross rods (17) and bottom cross rods (18) connected to and extending between the vertical posts (11,12) at their tops and bottoms, respectively. A bottom tray (20) is pivotally mounted to one of the bottom cross rods so that it can be moved from a horizontal position covering the bottom of the pallet to a vertical position out of interference with the folding of the various frame members. The vertical posts (11,12) are rotatably mounted to the base members (16) and top side members (14) so that when the tray is lifted up, the pallet can be folded to a flat configuration by drawing a diagonally opposed front post (11) and back post (12) together.

Abstract: A soil cultivating implement having an elongated frame portion which extends substantially horizontally perpendicular to the direction of travel of the implement mounts a side plate at each lateral end. The frame portion carries a row of rotary tined soil working members and the side plates can move upwardly and downwardly to cooperate with the adjacent soil working members and a rear supporting roller. In order to prevent the formation of the stream of soil produced by this cooperation into a ridge, the side plate comprises a rim having a lower substantially horizontal ground-engaging portion and also comprises a rear surface that is bent over inwardly towards the center of the implement to deflect the stream of soil towards the neighboring end of the following ground roller when the implement is in operation.

Abstract: A clevis end connecting rod such as truck lever connection rods, brake cylinder push rods, brake rod ends, etc., utilized on railroad cars, is manufactured by positioning an outside side surface of a metal eye member, having a bore therethrough, transversely against one end of a metal rod, and then the metal rod end is circumferentially welded to the eye member side surface with a good concentric and coaxial uniform weld. Thereafter, the eye member is transversely cut in half, thereby providing a cutting gap which is in line with the axis of the rod. Then this same end of the rod is axially cut to a predetermined depth to provide a bifurcated rod end. The bifurcation is aligned with the cutting gap between the eye member halves, and then the bifurcated rod end is spread and re-shaped to form a clevis end with the bores of the eye member halves being positioned in spaced alignment to receive a clevis pin, thereby eliminating expensive prior art hot forging techniques.

Abstract: A pivot assembly for mounting a bucket to a loader arm wherein shouldered pin adapters having a pin bore are tack welded in the bucket brackets so that when pounding occurs between the pin and pin bore, the pin adapter can be replaced to provide a new pin bore. The pin adapters are located on the interior sides of the bucket brackets and the external corner is indented to define a seal groove which provides an additional seal between the loader arm and the pivot pin.

Abstract: A clevis thimble connector embodies an elongated body member having a clevis at one end for connection to a supporting structure and a thimble at the other end for receiving the loop end of a conductor. A laterally projecting member extends perpendicular to a conductor receiving groove in a thimble and is provided with an eye in spaced relation to the thimble for receiving a connector element of a device for applying tension to the conductor.

Abstract: Disclosed herein is a coupling clamp formed by shaping a sheet-metal blank or tube length and having an axially slotted hollow body (14) forming a socket for a shaft or other transmission member and having a lug (17) depending from either side of the slot (15), the lugs being pierced (18) for the passage of a bolt or the like by which the clamp can be tightened to bear radially onto a shaft, at least one of the lugs having at least one internal tab (13) extending at least part-way across the slot and shaped to bear radially onto a shaft on tightening the clamp.

Abstract: A sailboat rigging fatigue indicating terminal assembly is provided for receiving and retaining the end of a tensioned metal rigging rod or the like subject to fatigue caused by vibration. It comprises a fitting having a securing portion at one end and an internal bore extending from its other end surrounding and securing the rod. At its outer rod receiving end, the fitting has a fatigue indicating portion defined by a weakened area, which may comprise an annular groove, spaced inwardly from the end of the fitting, which, upon breakage at the weakened area, releases the fatigue indicating portion to indicate decreased rod fatigue life.

Abstract: An anti-skid tire chain comprising a pair of parallel side chains, a series of traction rings extending medially between the side chains, and a network of connector chains interconnecting the traction rings with the side chains and with one another is characterized in that the connector chains are interconnected in threes by triradial connector plates. Each triradial connector plate consists of three plate elements welded together, each plate element providing a pair of opposite end portions, subtending an angle of 120.degree. to one another and an arcuate mid-portion defining a convex cylindrical surface, the plate elements being mutually welded together at the convex surfaces thereby defining a symmetrical triradial configuration providing three radially extending pairs of parallel arms, each pair of arms defining a clevis for receiving an end link of a respective connector chain, and including a removable clevis pin for retaining the end link.

Abstract: A hinge pin, preferably made of plastic material comprises, in a first embodiment, a serrated portion which extends outwardly of the hinge and a cap member which snappingly and resiliently engages the serrated member, the serrated member being severable to adjust for hinge length. In other embodiments, the hinge pin has resilient flap-like members which normally extend outwardly of the shank of the hinge pin, and which are resiliently present against the hinge pin during insertion of the hinge. The flap-like members flapping outwardly after passing through the hinge to secure the hinge pin in place. In other embodiments, first and second members, which extend into the hinge pin opening of a hinge from opening ends thereof, are interconnected by a spring member which extends outwardly of the hinge to retain the hinge pin in place.

Abstract: Disclosed herein is a universal joint yoke 1 having a rotational axis Y--Y and an opposed pair of arms 3 with bores 9 having a common axis X--X; the sectional shape of the arms in that plane perpendicular to the rotational axis Y--Y and passing through the common bore axis X--X having end portions 10 inturned towards the rotational axis Y--Y so that a greater depth h of bore may be obtained than the bore depth h' of a yoke of equivalent radial size formed from the same thickness material e and having arms 16 wherein the corresponding section is part circular.

Abstract: A swing shelf comprising a support arm, a shelf, a first means for rotatably mounting said shelf to one end portion of said support arm, said shelf being adapted to be fixedly secured to said support arm in any desired position, a mounting means adapted to be mounted to any desired surface, and second means for rotatably mounting the other end portion of said support arm to said mounting means, said mounting means being adapted to be fixedly secured to said support arm at any desired position.

Abstract: The backpack carrier permits a user to bend sideways, forward and backward without impediment. It includes a backpack frame and shoulder harness which is pivotally attached to a hip yoke through a two axis pivot member to permit pivotal movement therebetween about the vertical axis and about the horizontal axis generally perpendicular to the plane defined by the backpack frame. The ends of the hip yoke are secured to a harness locatable about the user's waist through a pivot member to permit pivotal movement of the hip yoke about the horizontal axis in the plane generally defined by the backpack frame.

Abstract: A method of manufacturing hand wrenches having a relatively long handle attached at one end to a yoke pivotally carrying the housing of a ratcheting socket drive mechanism fabricates the yoke, instead of casting or forging it, and employs a separate ferrule at the joint between the handle and the yoke, the parts being held in assembled relation and rotated while during a two step operation weld metal is deposited between the ferrule and the yoke, the legs of the yoke at the same time being compressed upon the ratchet housing.

Abstract: A material handling apparatus includes a base, an upper structure and a bearing for supporting the upper structure on the base for rotation about an axis. The bearing transmits radial, axial and moment forces from the upper structure to the base and has a first race connected to the upper structure and a second race movable as a unit with the first race. Means are provided for removably connecting as a unit the upper structure and bearing from the base and comprises a locking member, a lug and means for receiving the lug. Either the lug or the retaining means is fixed to the second race of the bearing and extends downwardly therefrom and the other is fixed to the bed. The retaining means has a pair of retainer portions which are spaced from each other to closely receive the lug therebetween. The locking member is slidably received in an opening through the lug and is removably received in apertures in the retaining portions.

Abstract: A kingpin assembly provided with a sleeve with an angled aperture therethrough. The sleeve is rotatable within an aperture at the end of an axle. The angled aperture is sized to receive a kingpin. The ends of the kingpin are mounted to a spindle. Rotation of the sleeve angles the kingpin from its vertical normal position to provide positive or negative camber to the mounted spindle and mounted wheel thereon.

Abstract: Means for improving the traction of wheeled equipment used in the logging industry comprising an improved skidder ring with clevises to which the connecting tag chains are fastened by a pin preferably secured in place by a spot of welding material. When a tag chain breaks and must be replaced, the pin is severed by a torch permitting the remaining two pin parts to be removed from the clevis. The end link of the replacement or repaired tag chain is secured by a new pin placed in the clevis. A spot of welding material is applied to the pin to hold it in place.

Abstract: A tether line is connected between a surfboard and an ankle cuff about a surfer's ankle so that the surfer will not lose the surfboard if he becomes separated from the board. A quick release is provided between the one end of the tether line and the ankle cuff permitting the surfer to manually release the tether line from the ankle cuff in an emergency situation. The quick release includes a yoke member to which the tether line is secured arranged to straddle an opening in the ankle cuff. A pin passes through the arms of the fork and the opening in the cuff and by simply manually removing the pin, the quick release results.

Abstract: End bearing assemblies are provided for articulating links, especially for articulating control links associated with helicopter rotor mechanisms. The end bearing assemblies comprise at least two elastomeric bearing sections connected by a load-transmitting member and arranged to react to loadings and accommodate motions along and about at least one of three mutually orthogonal axes.

Abstract: A roller hydraulic valve lifter or similar cam follower mechanism wherein the follower of such an assembly or mechanism is provided with a pair of spaced apart struts to receive the opposed free ends of a roller shaft carrying a cam follower roller. Each free end of the roller shaft is provided with opposed flats parallel to the axis of the shaft to define abutment shoulders which engage the struts to limit axial movement of the roller shaft in the follower. Each strut is provided at its free end with a tang that is bent over to partly encircle a free end of the roller shaft whereby to retain the cam follower roller and roller shaft in unit assembly with the follower.

Abstract: Reinforced plastic yoke includes a collar portion and longitudinally extending leg portions, with a metal strip reinforcing insert having a pair of longitudinally extending legs and a web embedded respectively in the legs and collar of the yoke. The legs of the metal reinforcing strip at their distal ends each include openings concentric with clevis pin openings in the legs of the yoke and the web includes an opening which accommodates a longitudinally extending bore in the collar portion. Additionally, an internally threaded metal insert fitting may be provided in the yoke collar portion extending axially through the web opening in the metal strip reinforcing insert, with mechanical locks to prevent relative movement between the fitting, collar portion, and metal insert.

Abstract: A chain block having an attaching member connected to the load-free end link of a load chain entrained around a load sprocket wheel rotatably supported by and between a pair of lateral plates. The attaching member is pivotally mounted at one end portion thereof between the pair of lateral plates by a pin which extends through the attaching member and the pair of lateral plates. The other end portion of the attaching member at which the latter is connected to the load-free end link of the load chain is formed on both sides thereof with boss-like projections adapted to abut against the peripheries of the pair of lateral plates to thereby increase the strength with which the load-free end link of the load chain is attached to the pair of lateral plates, thereby improving the safety of the chain block.

Abstract: Metal stock is forged into a blank consisting of a rod-like shank joined at one end to the inner ends of a pair of forks having enlarged flattened outer ends projecting laterally of the forks in the same direction and provided with pin-receiving openings. One fork is aligned with the shank and the other fork extends laterally away from the shank and then outwardly, with its enlarged end projecting toward the other fork. Both forks are then twisted in the same direction to turn their flattened ends approximately 45.degree. into spaced parallel planes, and the longer fork is bent to move its flattened end into a position in which its opening is axially aligned with the opening in the other enlarged end.