Abstract: A rotational spring clip is provided for connecting a male component to a female component. The spring clip is pivotally secured to a female component. The male component includes a male member that extends through a hole in the female component. The spring clip is then rotated to engage the male component with a structure that includes two spaced apart legs that define an open mouth. The legs of the clip are trapped between a flange formed at the outer distal end of the male member that extends through and beyond the female component. The legs of the clip are then frictionally trapped between the flange of the male member and an outer surface of the female component.

Abstract: A fastener which includes an inner collar having an axial bore and a retractable projection projecting into the axial bore when the fastener is in a locked position and retractable out of the axial bore when the fastener is in a retracted position. The inner collar further has a tapered indentation in the outside surface. The fastener further includes an outer collar having an axial bore, the outer collar placed uniaxially and slidably over the inner collar and having a movable protuberance extending into the axial bore of the outer collar. The movable protuberance is shorter axially than the tapered indentation in the inner collar and is positioned in the tapered indentation. The fastener is in a locked position when the outer collar is in its resting position relative to the inner collar in which the movable protuberance is resting in the deepest portion of the tapered indentation. The fastener is in a retracted position when the outer collar is moved axially out of the resting position.

Abstract: A fitting space having an annular opening, in which an elastic ring whose diameter of a section is D is to be fitted, is formed between a pin-press-fit hole of a link and an exposed end portion of a pin. A link inner wall face and a pin outer peripheral face in the fitting space are formed with tapered faces whose diameters decrease as they go toward an inmost of the fitting space at angles &agr; and &bgr; (&agr;>&bgr;) with respect to the axial line of the pin, respectively. The elastic ring contacts with the respective tapered faces in the fitting space at the angles &agr; and &bgr; with respect to a perpendicular passing a center of its section. Dimensions d1 and d2 between contact points at the respective tapered faces and a horizontal line passing the center of the section of the elastic ring, the diameter D of the section of the elastic ring, and the angles &agr; and &bgr; have a relation of &agr;>&bgr;, D>d1+d2 (where d1=D/2·cos &agr;, d2=D/2·cos &bgr;).

Abstract: A structure for connecting a tool with a grip, including an insertion rod, an outer sheath and a fastening ring. The insertion rod is inserted in the outer sheath. One side of the insertion rod has a projecting block formed with a transverse recess. The outer sheath is formed with a split in which the projecting block of the insertion rod is inserted. A periphery of the outer sheath is formed with an annular groove corresponding to the transverse recess of the projecting block. The inner circumference of the fastening ring is formed with an annular rib fitted in the annular groove. The rib is formed with a dent having a width slightly larger than the width of the split. When rotating the fastening ring, the rib is engaged in the transverse recess of the projecting block to restrict the insertion rod from displacement.

Abstract: The present invention relates to a connector for connecting a section of a first item to a section of a second item, the connector characterised in that the connector is capable of concertinaing in on itself on at least one side.

Abstract: A recombinator for connecting and recombining sections of material. The recombinator including a cylindrical sleeve formed from at least two semi-cylindrical sections having edges and an internal arcuate surface. A first cylindrical hub is used to cooperate with the cylindrical sleeve. The cylindrical hub is formed from at least two semi-cylindrical hub sections, each semi-cylindrical hub section including an external arcuate surface adapted for mating with the internal arcuate surface of the cylindrical sleeve and having edges adapted for alignment with at least one of the edges of at least one of the semi-cylindrical sections. The semi-cylindrical hub sections also include at least one facet surface joining the edges of the external arcuate surface of the semi-cylindrical hub section. Each facet surface has been adapted for mating with the facet surface of another semi-cylindrical hub section.

Abstract: A tabber apparatus includes a frame, a removable shaft for guiding a media through the tabber apparatus and a retaining member. The frame includes at least one opening formed therein. The removable shaft includes an end received in the opening of the frame. The retaining member includes a body portion and first and second arm portions. The first arm portion is rotatably attached to the frame. The second arm portion is rotatable about the first arm portion and is biased to allow contact of the body portion against the shaft to retain the shaft in the opening.

Abstract: A frame material for a wall of a building, including a metal beam, and a tubular rectangular metal stud having opposite sides each provided with a window through which the beam is capable of being inserted and in which the beam is received such that the lateral movement is prevented. One of the windows has a stopper member which is displaceable between close and open positions and which extends from one side to the other side of the window. The stopper member in the closed state prevents the beam received in the windows to move vertically.

Abstract: Apparatus comprising a first member including first and second member engagement surfaces, a second member, a pin pivotally connecting the first and second members, the pin having a longitudinal axis and opposite ends, and a retainer for retaining the pin in position relative to the first and second members, the retainer having a center of gravity and including first and second retainer engagement surfaces, the retainer being movable relative to the first member between a retaining position and a non-retaining position so that, when the retainer is in the retaining position, the first and second member engagement surfaces respectively engage the first and second retainer engagement surfaces to limit axial movement of the retainer relative to the first member, the retainer covers one end of the pin and thereby limits axial movement of the pin relative to the first member, the retainer has a point of engagement with the first member, and the position of the center of gravity relative to the point of engagement

Abstract: One end of a flexible cable of specified length attached to the end of a shaft and the other end attached to a light-weight and disengageable restraint anchor with a wedge-shaped cross section within a tube. The shaft cannot be removed from the tube, nor can cable be cut, because the anchor is located at a depth in tube greater than the specified length of cable. Anchor is comprised of an inner and an outer piece and operably attached to cable via the inner piece. Outer surface of outer piece essentially conforms to the tube inner diameter. During normal operation (random vibration and impact) the anchor is held in a specific location by a low-force radial force means comprised of a metal snap ring pressing outwards on outer piece. During an undesired removal, the inner piece and outer piece together provide a high-force radial constraint by means of wedge-shaped cross section such that any amount of tension on cable will be insufficient to move anchor from specified location.

Abstract: A joint coupling for axially connecting together a first joint and a second joint, which includes first and second joints each having a complementary member sized and shaped so that, when the joints are properly aligned, the complementary members form an overlap structure which is effectively a continuation of the first joint or the second joint, and a sleeve which is slidable over the overlap structure to secure the joint coupling. The inside surfaces of the sleeve are tapered, as are the outside surfaces of the overlap structure such that when the sleeve is slid completely over the overlap structure, the inside surfaces of the sleeve make full contact with the outside surfaces of the overlap structure to firmly secure the joint coupling. Two or more joints may be joined at any desired relative orientation by use of a hub which has complementary elements which can accommodate the complementary members of the joints.

Abstract: A dragline bucket rigging includes at least one pair of components removably secured together by a connector pin assembly including a U-shaped spring retainer clip. The clip removably snap-fits beneath a protective cap secured to the outside face of one of the components and within an open-ended channel defined between the cap and the component face. Legs of the retainer clip abut the sides of the channel and nest within a pair of diverging slots formed one on each side of a retainer pin when the latter telescoped through an opening formed within the cap and into a connector pin hole in the component. The legs thereby act to prevent the pin from rotating or being removed axially from the hole and yet the clip can be easily removed allowing the pin to be removed axially to disconnect the rigging components.

Abstract: A gas turbine engine has a plurality of casings defining a chamber exposable to a gasflow therein, and a plurality of retaining members are associated with the housings to retain them against displacement. Each retaining member has an end portion extending into the chamber and a shield is associated with the casings to define a protective cavity within the chamber about the end portions of the retaining members thereby to isolate the end portions from the chamber. A method of assembling a gas turbine engine is also disclosed.

Abstract: A universal joint (10) for a steering gear input shaft (11) includes a yoke (12), a bolt (14) movable into an installed position in the yoke, and a spring clip (22) for locking the bolt in its installed position in the yoke. The spring clip (22) moves with the bolt (14) when the bolt is moved into its installed position in the yoke (12), and has first and second portions (202, 212). The first and second portions (202, 212) of the spring clip (22) have locking positions in which the first portion (202) engages the bolt (14) and the second portion (212) interlocks with the yoke (12) to block movement of the bolt out of the yoke. The second portion (212) of the spring clip (22) moves resiliently into its locking position to interlock with the yoke (12) upon movement of the bolt (14) into its installed position in the yoke (12).

Abstract: A coupling device intended to be applied on a vehicle, and which includes an attachment portion and a coupling portion, one of said portions including a tube shaped female element and the other one a longitudinal male element intended to be received in the female element. A movable piston, sidewardly spring biased towards the female element, is able to be introduced a side recess in the male element, the piston being kept pressed into the side recess by an abutment element in a first mutual position of engagement between the piston and the abutment element.

Abstract: A self-locking connector for pivotably interconnecting a carburetor throttle valve member to a cable connected vehicle accelerator pedal member includes a nailhead-like pin projecting from the one member for insertion through a keyhole slot in the other member, the other member having a movable retainer/cover normally biased to a position overlying the slot prior to assembly of the two members, the retainer/cover being retractable to uncover the slot and permit passage of the pinhead through the slot, return movement of the retainer/cover engaging the ends of the retainer/cover with the pinhead moving it into the smaller diameter portion of the keyhole slot and engaging the end of the retainer/cover under the head of the pin preventing withdrawal of the pin from the slot and locking the two members pivotably together.

Abstract: The present disclosure includes an interfacing lift hitch for connection between a tractor and an implement. The hitch includes retractable, implement connecting hooks and is U-shaped to allow operation of the power takeoff of the tractor. The disclosure further includes a drawbar mounting device connectable to the U-shaped lift hitch when the power takeoff is not being operated, and a four point hitch mechanism connected to one of my lift hitches and being operable when the hooks are moved to an out of the way position.

Abstract: A device for securing a manipulated component to the fitting portion of a panel so that the shaft of the component extends through the panel. The component includes a boss, a flange, and an engagement portion and that the fitting portion is provided with a through hole and a securing apparatus. The boss projects to the fitting portion, and covers the shaft at the rear end thereof. The flange is formed at the front end of the shaft. The engagement portion is provided on a surface at the fitting portion and located in a position different from that of the boss. The flange is inserted through the hole so that the attaching position of the axis of the engagement portion is different from the manipulating position of the axis of the shaft.

Abstract: A coupler body 12 with a socket 44 therein is attached to nuclear stream generator tools to be mated with an arm 22 of a remotely controlled manipulator. A plug 16 for insertion in socket 44 is mounted with a ball detent lock actuating air cylinder 18 on L-shaped bracket 20 attached to the end of arm 22. Cam surfaces 62 on body 12 and 64 on bracket 20 align the plug 16 and socket 44 for insertion to mate and couple the tools and arm 22.

Abstract: A quick-attach coupler for attaching an implement such as a bucket (15) to a machine such as a front end loader or backhoe. The coupler includes attachment structure (25, 29) for attaching the coupler to the machine, upper receiving structure (20) for receiving an upper coupling structure (18) on the implement and lower receiving structure (19) for receiving a lower coupling structure (17) on the implement. The lower receiving structure has an opening including a locating formation in the form of a threshold (19a) which retains the lower coupling structure (17) in the lower receiving structure, and latch structure (34) associated with the upper receiving structure (20) retain the upper coupling structure (18) within the upper receiving structure (20) and prevent the lower coupling structure (17) disengaging the locating formation (19a) of the lower receiving structure thus maintaining the attachment of the implement on the coupler.

Abstract: A small gas turbine engine including a power turbine shaft and a gearbox input shaft co-axially aligned one with the other and mounted in three bearings. The power turbine shaft is provided with a male conical surface while the gearbox input shaft is hollow and includes a female conical surface adapted to mate with the male conical surface of the power turbine shaft. The power turbine shaft also includes an axial projection being threaded and inserted within the hollow portion of the gearbox input shaft. A nut having a shoulder is threaded onto the threaded projection of the power turbine shaft and engages a shoulder provided within the hollow gearbox input shaft such that torsion applied to the nut will force axial engagement of the conical surfaces. A complementary spline section may be provided, on the one hand, between the nut engaging shoulder and the female conical section on the gearbox input shaft. The complete coupling is within the diameter of the two co-axial shafts.

Abstract: A novel connector for connecting a beam to a column in a storage rack is disclosed. A flanged member is fitted against the column, with a side flange disposed against a side wall of the column and with a front flange disposed against a front wall of the column. Hooks on the front flange are hooked into apertures of the front wall. An elongate, strip-like spring clip is clipped onto the side flange, which has a recess receiving a bent portion of the spring clip. Another portion is accommodated by a trough extending from the recess. A dimple formed on the spring clip extends into a slot of the side flange. A locking pin affixed to the spring clip extends through an aperture of the side flange and through one of an array of apertures of the side wall.

Abstract: In the first embodiment, the distal end of a reciprocating plunger of a power saw includes a longitudinally extending cavity receiving a block-like wedge member. A planar wall of the cavity and a planar face of the wedge member are arranged for substantial coextensive engagement with respective opposed faces of the saw blade. A spring in the cavity engages the wedge member for urging the same outwardly of the cavity. A pin extends through the wedge and has its opposite ends received in slots in opposed walls of the plunger. These slots are inclined with respect to the longitudinal axis of the plunger and cooperate with the pin to form a cam to urge the planar surfaces into clamping engagement with the blade under the influence of the spring. The blade may be released by forcing the wedge inwardly of the cavity under finger pressure. In a second embodiment, a similar block-like wedge member cooperates with a U-shaped member mounted on the plunger.

Abstract: A self-locking clamp has a handle which locks to a non-rotating member if the handle starts to turn while in clamping use. The clamp has a retractable collar which is splined to the handle and is biased toward locking engagement with a sleeve that in turn seats against the member to be clamped. The collar can be held retracted from the sleeve for tightening and loosening the clamp.

Abstract: A workable comprises two pairs of legs, a tabletop, and a pair of support arms. The top end of each pair of legs is pivotally joined by a joint means which further pivotally connects a receiving frame of the tabletop at its upper portion. Each of the receiving frame is provided with a pair of fixtures, the distance between the two fixtures is adjustable by a threaded rod disposed inside the receiving rod. Each of the support arms is pivotally connected to the receiving frame at its top end while its lower end is provided with a pair of dents permitting it to be supported on the forward extended legs by engaging the dents with a locating pin on the legs. When detaching the support arm from the locating pin on the legs, the legs may be folded toward each other and the tabletop may be lifted to form an upright position while closely attach the folded legs.

Abstract: The quick-locking connector comprises a tubular female body member 14, open at one end to receive a male member 10 therein. A latch 18 is located within the female body member 14 spring-urged towards the open end to engage the male member 10. A plurality of external, longitudinally spaced bearing surfaces 40-43 are provided on the male member 10 and complementary bearing surfaces 40-43 are provided internally of the female body member such that after entry of the male member a quarter turn of the members brings the respective bearing surfaces 40-43 into engagement at longitudinally spaced intervals against pressure from the latch to provide a longitudinally spaced plurality of complementary bearing surfaces 40-41 to be subjected to axial impact forces tending to pull the male and female members apart. A plurality of complementary bearing surfaces 42, 43 may be provided to be subjected to impact forces in the opposite axial direction.

Abstract: A locking pin and clevis wherein a slidable lockable member engages one end of the pin to lock it and a spring can be locked to said slide member to prevent it from moving to the unlocked position. The spring can be disengaged with the slide member to allow the slide member to be moved to the unlocked position so that the pin can be moved out of engagement with the one end of the clevis.

Abstract: A latch mechanism includes a cylindrically shaped rotating cam having a small radius portion and a large radius portion that are spaced from each other along a circumference of cylinder. A ball is seated against the cam. The ball is forced outward when it is seated in the small radius portion of the cam, and is allowed to move inward when it is seated in the large radius portion of the cam. A first hollow latch pin is provided, having an indentation at one point on the outer surface thereof into which the ball can seat. A second smaller size latch pin, also having an indentation in one point on the outer surface thereof into which the ball can seat, is insertable within the first hollow latch pin, to thereby allow multiple objects to be secured by the latch mechanism. A housing supports and facilitates movement of the cam, the ball and the two latch pins.

Abstract: A mounting device for attaching an accessory apparatus to an off road vehicle. The mounting device includes a carrier frame mounted to the accessory and a mounting frame attached between the actuating arms of the off road vehicle. The mounting frame includes a bar member that is engageable with an overhanging member on the carrier frame to form a load bearing connection between the vehicle and the accessory apparatus. The mounting device further includes a pair of lug members secured to the carrier frame that are releasibly engageable with horizontally directed openings formed in hooks attached to opposite sides of the vehicle. Adjacent each of the lugs is mounted a movable over center locking mechanism that is movable between a locked position wherein the lugs are locked to the hooks to secure the accessory to the vehicle, and an unlocked position which allows the lugs to be removed from the openings in the hooks.

Abstract: A locking device at a trailer coupling, including a first part (1), which is adapted to be attachable to a towing vehicle, and a second part (2), which is adapted to be coupled to a trailed vehicle and to be releasably attachable to the first part (1). The first part (1) includes an opening (8), into which the second part (2) is introducable, and a locking bolt (10), which is displaceable in its axial direction into the opening (8) in the first part (1) to lock the second part (2) by engagement in a locking recess (11) therein in the position thereof where it is introduced in the opening (8) of the first part (1). The locking bolt (10) is urged by a spring (20) in a direction towards the opening (8) in the first part and manually operable in the opposite direction.

Abstract: In accordance with the invention, there is provided a quick release sissy bar bracket for a motorcycle having a rear fender bar on each side of the rear fender, which is rigidly attached to the motorcycle, and a sissy bar bracket plate releasably attachable to each fender bar; a forward coupling arrangement in the form of coupling bolts is rigidly attached to said rear fender bar, and a forward receiving arrangement is rigidly attached to the bracket plate for releasably receiving said forward coupling bolts and rear coupling bolts which are rigidly attached to the rear fender bar, spaced apart from the forward coupling bolts, and a rear receiving arrangement is rigidly attached to the bracket plate for releasably receiving the rear coupling bolt. A spring biased locking means in engagement with at least one of said forward and rear receiving arrangements on each bracket plate serves for releasably locking the receiving arrangement to the coupling bolts.

Abstract: A coupling device has a transversely arranged, open-end groove (30) in a flange attached to a pipe end. The groove in the flange receives a circumferentially arranged locking flange element (76) on the other coupling member and permits alignment of the bores of the coupling members when the locking flange element is in the open end groove. Upon alignment of the bores of the coupling members, a trigger member (60) is activiated to automatically release a spring biased tubular member (33) in one of the coupling members. The tubular member has a conical end (48) which is displaced into the other coupling member to lock the coupling members to one another. A tensioning nut (72) is threadedly movable on a coupling member so as to be moved into tightening engagement with the other coupling member.

Abstract: A spline joint includes an externally splined shaft end and an internally splined hub end engaged therewith. The shaft end has an annular groove around the spline portion wherein a plurality of locking balls may ride. The hub has the same number of holes as there are locking balls, each of which hole is adapted to receive a locking ball. A sliding sheath surrounds the hub. This sliding sheath has an annular projection and an annular groove in axially spaced relation around its internal face. The annular projection presses against the locking balls when the spline joint is in operation. The annular groove embraces a polygonal spring, the spring having the same number of sides as the number of locking balls. The center of each side of the polygonal spring presses against a lock ball from a radially outward position and prevents the lock balls from going out of position when the spline joint is being detached.

Abstract: A joint assembly interconnecting first and second rotatable shafts includes an engaging member mounted on a shaft portion of the first rotatable shaft, a tubular assembly including a first tubular member in which the shaft portion is coaxially inserted and which has an engaged member for engaging the engaging member, and a second tubular member coupled to the second rotatable shaft, and an urging assembly disposed in the first tubular member for normally urging the first tubular member and the first rotatable shaft axially away from each other to keep the engaging member and the engaged member in engagement with each other. The engaged member has a central through hole through which the first rotatable shaft is inserted, and holes extending radially from the central through holes for allowing the engaging member to be axially inserted therethrough, for thereby permitting the first rotatable shaft to be connected to and disconnected from the joint assembly.

Abstract: A reconditioned tool comprises a cylindrical insert cut from a damaged tool, such as a hog mill, with a milling face formed on one end and a transverse dovetail tenon cut in the other end. The dovetail tenon engages a transverse dovetail mortise in the end face of a cylindrical holder. A transverse slot in the holder splits the end of the holder into two axially extending end sections each of which includes one-half of the dovetail mortise. A clamping device, such as a bolt, draws the two end sections of the holder together to pull the insert firmly against the end faceof the holder through wedging action of the two halves of the dovetail mortise against the dovetail tenon. A locking pin inserted through aligned transverse grooves in the holder and insert prevents a lateral displacement of the insert relative to the holder.

Abstract: A method and apparatus for quickly mounting a loader on a tractor which eliminates need for loose connecting pins or bolts and tools. A pair of slotted brackets include sliding wedge blocks which automatically secure the mast post pins in position during mounting. The mast post pins are moved into the slots, and then the forward portion of the loader frame is rotated upwardly about the axis of the pins to engage forward mounting structure. The tractor is then driven forward to slide the mast post pins into the respective slotted brackets. Thereafter, the boom cylinders are actuated to rock the loader frame about the forward mounting structure and move the mast post pins into vertically disposed portions of the slots and to permit the wedge blocks to slide into their latching positions. A handle operated cam arrangement moves the block away from the slot portion for dismounting the loader.

Abstract: A tractor-trailer coupling safety device includes a housing mountable about the curved medial area of a pair of joined coupling elements and presenting opposed inwardly directed projections serving to contain and prevent the members from separating from the housing while allowing normal angular relative displacement between the joined coupling elements.

Abstract: The invention is a shaped base plate assembly onto which one or more separate units may be detachably mounted. One common latch plate, bolted to the base plate, fixes all the separate units in place in fixed relation to each other and to the base plate. The invention may be employed to mount four separate transformers to a common base plate. Each transformer is fitted with appendages such as four cylindrical legs, each leg being shaped with a circular undercut of reduced cross-section adjacent the free end of the leg. The base plate is formed with sets of keyhole-shape or teardrop-shape holes, with each set of holes located to accommodate the legs of a given transformer. When all four transformers have been inserted and then slid into the latched position, a latch plate is fastened by one latch screw to the base plate. The latch plate is of a shape and size to abut against at least one leg of each transformer and to bias the undercut section of each transformer leg snugly against an edge of a base plate hole.

Abstract: The shovel for an excavator has teeth arranged at a distance apart from one another on its digging edge. The areas of the edge of the shovel between the teeth are equipped with caps that are relatively resistant to wear and are put on in such a manner that they can be replaced, and have a short hook-like projection which engages under the edge of the shovel and a long leg which fits over the edge of the shovel. Secured to the upper surface of the shovel between the teeth of the shovel are retaining pieces which can fit together with the legs of the caps when the caps are put onto the edge of the shovel and which cooperate with them in an interengaging manner to prevent the legs of the caps from being lifted off from the upper surface of the shovel. Detachable securing members hold the legs of the caps and the retaining pieces together in the direction in which they can be fit together.

Abstract: A lift truck load handling attachment having a quick-disconnect hook assembly for quick mounting or demounting of the attachment on a lift truck carriage. The hook assembly comprises a hook mounting member fastened to the rearwardly-facing surface of the frame of the load-handling attachment, slideably mounting an upwardly-facing hook for vertical reciprocation of the hook relative to the mounting member. The hook and mounting member respectively have elongate, vertically-oriented interlocking slides for permitting such vertical reciprocation while preventing rearward movement of the hook relative to the mounting member. A locking pin is selectively insertable transversely to limit downward movement of the hook relative to the mounting member, and the vertical slides and pin are located below the engagement surface of the hook when in its engaged position so as to permit direct abutment between the front of the lift truck carriage and rear of the attachment frame.

Abstract: The invention is a mechanical device which enables the connection of two ferably longitudinal rigid members. Utilization of the invention enables the quick connection and disconnection of members manually without the aid of tools. The device is designed such that the connection is positively locked. The connection is also characterized in that torques and bending moments will not be transmitted between the two connected members through the device. The device, however, will transmit tensile, compressive, and shear loads.

Abstract: Lock mechanism includes a first sleeve on the inner end of the outer telescoping member having a forward extension with a non-circular central passage therethrough for close sliding receipt of a non-circular external surface on the inner tubular member to prevent relative rotation between the telescoping members. The forward extension has an external circumferential groove, and a radial opening extending through the bottom of the groove for receipt of a ball that successively engages a plurality of longitudinally spaced sockets in one of the non-circular sides of the inner telescoping member during relative longitudinal movement therebetween.

Abstract: This invention relates to a wire locking structure for a filter device, in which an outer circumference of a cylinder body is provided with a screw thread portion. The screw thread portion is wrapped by a wire of isosceles triangle in section. An end of the wire is drawn into a recess and firmly supported in a U-shape by an insert member to be inserted in the recess, thereby a conventional welding means has been removed.

Abstract: A coupling assembly including a lock latchable in the unlocked position particularly for connecting a universal shaft with a power takeoff shaft in agricultural implements, wherein a coupling sleeve on the universal shaft may be slipped into torque transmitting engagement onto a power takeoff shaft and held in the locked position by locking members engaging within an annular groove of the power takeoff shaft. A lock ring holds the locking members in the locked position and when it is desired to release the coupling, a gripping sleeve is moved so as to disengage the lock ring from the locking members to enable disengagement of the locking members from the annular groove in the power takeoff shaft.

Abstract: A scaffold assembly that can be disassembled and reassembled is provided with spring locking members which are attached releaseably in vertical mounting pieces supporting a shelf and which can engage in the attachment holes of vertical struts to lock the vertical mounting pieces against movement relative to the vertical struts.

Abstract: A connection between a first member (e.g. a piston rod) and a bore in a second member (e.g. a piston) which is formed by two spaced grooves on the first member at least one of which is in register with one of two spaced steps in the bore, and a compression clip mounted in each groove such that when the groove and the step are in register the compression clip is in compression between one face of each groove and one face of the corresponding step and the angle between the compression forces acting on the clip and the longitudinal axis of the bore is in the range 30.degree.-70.degree..

Abstract: A scaffold joint for connecting the ends of horizontal scaffold members to vertical scaffold members. Spaced pairs of ring support members are fastened to the vertical scaffold members by welding or other suitable means. End connector assemblies are fastened to the ends of the horizontal scaffold members. Each of said end connector assemblies includes an end connector member and a locking assembly slidably mounted thereon. Each locking assembly is comprised of a wedge member and a wedge retainer member. The wedge retainer member is free floating relative to the wedge member and cooperates with a bolt to prevent inadvertent dislodgement of the assembly. Each end connector member has a pair of ring engaging portions adapted for engagement with the spaced ring support members on said vertical scaffold members.

Abstract: This connection means comprises a male connector (1) with a circular groove (5) and a female connector comprising a body (2), a cap (3) and a sleeve (4). The cap (3) hangs from the bottom end of body 2 within which it is able to partly slide. The cap has a bearing surface (7) bearing on the male connector (1) and its bottom part (9) covers the male connector. This bottom part is provided with a circular series of openings (10) each equipped with a finger (11) operable to slide radially. These fingers cooperate with windows (27) in a conical wall (26) of the sleeve (4). Connection is made by gravity, by body 2 pushing down on sleeve 4, which slides downward causing the fingers (11) to slide radially inward. Disconnection is accomplished by sending oil pressure through purposely provided channels (35, 33, 30) into a chamber (20), causing the sleeve (4) to slide up and the fingers (11) to retract.

Abstract: This invention relates to a wire locking structure for a filter device, in which an outer circumference of a cylinder body is provided with a screw thread portion. The screw thread portion is wrapped by a wire of isosceles triangle in section. An end of the wire is drawn into a recess and firmly supported in a U-shape by an insert member to be inserted in the recess, thereby a conventional welding means has been removed.

Abstract: A connecting device for releasably securing an axle on a support plate comprising a bushing member rotatably receiving the axle, said bushing member being disposed in an aperture of a support plate, which aperture has an opening to the edge to form a narrow throat which has a dimension less than the diameter of the aperture. The bushing member has a cylindrical body with portions removed to form at least one flat surface and a retaining lever connected to the switching body in a relationship so that with the lever in a first position the body can be inserted through the narrow portion of the throat into the aperture and then rotate it to a second position locking the bushing member in the aperture.