Abstract: A Woodruff key system includes a rotatable shaft having a keyseat defined therein. The keyseat includes a pocket engaged with the Woodruff key, a first keyseat extension extending in a first axial direction from the Woodruff key relative to the shaft, and a second keyseat extension extending in a second axial direction opposite the first axial direction from the Woodruff key relative to the shaft. Respective depths of the first and second keyseat extensions are less than a depth of the pocket of the keyseat.

Abstract: A leg assembly includes a guide tube, a power drive coupled to a flange of the guide tube, a steering ring coupled to the power drive, a tube weldment coupled to the steering ring, and a hydraulic actuator coupled within the guide tube and within the tube weldment. The power drive includes a slew drive or a hydraulic cylinder steering assembly. The tube weldment is translated through the power drive by the actuator. To achieve a minimal width, the tube weldment includes a keyway. The steering ring includes a key by which relative rotational movements may be imparted to the keyway. The steering ring is rotated by the power drive. Thus, the guide tube may be rotated relative to the tube weldment.

Abstract: A compressor having a stator vane assembly having an inner ring and a seal carrier secured thereto, the seal carrier having two opposite seal carrier end faces and the inner ring having two inner ring end faces which face said seal carrier end faces and are received between said seal carrier end faces with an axial gap therebetween, at least one clamping element bearing axially with a first clamping element end face against the inner ring and with a second clamping element end face against the seal carrier and being axially resiliently clamped between the inner ring and the seal carrier. A compressor with a clamping element for radial clamping is also provided.

Abstract: The present invention provides an expandable fusion device capable of being installed inside an intervertebral disc space to maintain normal disc spacing and restore spinal stability, thereby facilitating an intervertebral fusion. In one embodiment, the fusion device includes a body portion, a first endplate, and a second endplate, the first and second endplates capable of being moved in a direction away from the body portion into an expanded configuration or capable of being moved towards the body portion into an unexpanded configuration. The fusion device is capable of being deployed and installed in both configurations.

Abstract: A device for locking a root of a rotor blade in a groove in a rotor disk of a turbomachine including: a circular ring sector configured to be mounted, transversely to the axis of the turbomachine, in a groove in the rotor disk; at least one locking wedge, which is rigidly secured and perpendicular to the ring sector, and extends parallel to the axis of the ring sector so as to hold the root of the blade radially in the groove; and at least one locking tooth extending from the ring sector radially with respect to the axis of the ring sector, so as to prevent the root of the blade from moving axially in the groove.

Abstract: A rotating electric machine has a first frame and a second frame disposed at one axial end of a casing. The first and second frames have a first flange and a second flange, respectively, that protrude outwardly from the casing. The first and second flanges are fastened together by a through bolt. The first flange includes a recessed portion having a first curved portion, a second curved portion, and a third curved portion. A curvature radius of the third curved portion is greater than a curvature radius of the first curved portion and a curvature radius of the second curved portion such that a concentration of stress within the third curved portion that is caused by a fastening force of the through bolt may be reduced.

Abstract: An inner race and boot sleeve combination is provided. The inner race has an inner surface with a groove formed therein. The boot sleeve has a groove in an outer surface. A ring is located in both grooves to axially secure the inner race and boot sleeve together. Devices to prevent relatively rotation between the inner race and the boot sleeve are also provided.

Abstract: In an embodiment, there is a turret pocket key that includes a first slider block, a second slider block, a third slider block and a fourth slider block. The slider blocks are retained such that the slider blocks are adapted to move relative to one another, the key is adapted to move the first slider block and/or the fourth slider block to draw the first slider block and the fourth slider block relatively towards each other, and when the first slider block and the fourth slider block are drawn relatively towards each other, the second slider block and the third slider block move outward in a direction normal to the relative direction of movement of the first slider block towards the fourth slider block.

Abstract: A connecting mechanism includes a transmission shaft, an adjustment member, a transmission member, a key, and a fastening member. The transmission shaft forms a first threaded portion and a second threaded portion, and axially defines an assembly groove between the two threaded portions. An adjustment member receives the first threaded portion. The transmission member is sleeved on the transmission shaft, and defines a receiving groove. The key is wedge-shaped. The key is partially received in the assembly groove of the transmission shaft, and partially received in the receiving groove of the transmission member. The fastening member engages the second threaded portion, and drives the key to resist the adjustment member.

Abstract: A corner joint between two frame lineals of a pultruded window frame is defined by inserting a leg of a corner member into a hollow interior of each lineal and attaching the legs to the lineals by adhesive. Each leg has a plurality of surfaces thereof each having a first portion at the corner which lies closely adjacent a corresponding surface of the first lineal and a second portion, at the end of the first portion remote from the corner which tapers inwardly away from the corresponding surface of the first lineal such that a spacing therebetween increases in the direction away from the corner. The adhesive is applied to the tapered portion and the taper acts to force the adhesive along the leg to the first portion and to the ends of the lineals where the excess can be wiped away.

Abstract: A car wall arrangement for an elevator car having a first car wall, on whose outside is arranged at least one first joining element with a first flange that projects beyond a first end-face of the first car wall and is angled from the outside by a joining angle that is greater than 180° and less than 360°. A second car wall is provided on whose outside is arranged at least a second joining element with a second flange that projects beyond a second end-face of the second car wall. The second flange is turned away from the outside of the second car wall by the same joining angle ? so that in the installed state the first flange rests against the outside of the second car wall and the second flange against the outside of the first car wall.

Abstract: A rotor assembly for mounting a rotor to a motor shaft having a rotor with a centrally positioned central bore, the diameter of which is slightly larger than a diameter of the motor shaft, a first stepped bore intersecting the central bore and being aligned along a first axis of the rotor, and a second stepped bore also intersecting the central bore and being aligned along a second axis of the rotor. A first cam fastener is disposed within the first stepped bore, and a second cam fastener is disposed within the second stepped bore. Upon rotating the first and second cam fasteners, they engage the motor shaft thereby securely clamping the rotor to the motor shaft.

Abstract: A support assembly for use on a shade in a vehicle is disclosed. The support assembly includes a base end cap and a nose insulator secured to an end of the base end cap. The support assembly also includes a removable extension arranged over the nose insulator and a portion of the base end cap. A second nose insulator is secured to an end of the removable extension for interaction with an inside surface of the vehicle.

Abstract: A hockey stick having an angled shaft extension comprises an elongate shaft having an upper end and a lower end and defining a shaft longitudinal axis, and is graspable by a hockey player. The upper end has a substantially hollow central portion. A blade is securely connected to the elongate shaft at its lower end and is for contacting a hockey puck. A shaft extension has a grippable portion having a lower end and an upper end, and defining a grip longitudinal axis extending between the lower end and the upper end, and an insert portion securely connected to the grippable portion at the lower end thereof. The insert portion is insertable into the substantially hollow central portion of the upper end of the elongate shaft, to thereby securely connect the shaft extension to the elongate shaft such that the grip longitudinal axis is angled below the shaft longitudinal axis.

Abstract: An apparatus and method for tunneling a distal portion of a multilumen catheter tube in a patient is disclosed. The apparatus includes a connector having a distal end and a proximal end. The proximal end includes a first coupling portion for selective connection to a distal end of the multilumen catheter tube, and the distal end of the connector includes a second coupling portion. A trocar is provided having a first end and a second end. The second end of the trocar is configured for selective connection to the coupling portion of the connector. The connector and the second end of trocar are configured such that they are substantially coaxially aligned with the multilumen catheter tube when the first coupling portion of the connector is selectively joined with the distal end of the multilumen catheter tube and the second end of the trocar is selectively engaged with the second coupling portion of the connector. A method of reverse tunneling a multilumen catheter tube using such an apparatus is also disclosed.

Abstract: Apparatus and method for rotationally immobilizing a hub on a rotatable shaft. A portion of the shaft is cylindrical and has a first diameter. The hub has a cylindrical axial bore having a second diameter larger than the diameter of the shaft. At least one axially-extending keyway is provided in the surface of the shaft. When the shaft is inserted into the hub bore, the hub is free to rotate upon the shaft. To immobilize the hub rotationally with respect to the shaft, at least one tapered key having a height greater than the maximum depth of the at least one keyway is inserted axially into the at least one keyway. Preferably, the at least one key is inserted along the at least one keyway to a point at which the maximum height of the at least one key is positioned at the axial midpoint of the hub bore.

Abstract: A mounting assembly for a shank including a shank holder having a passage for receiving the shank, the passage having at one end opposite tapering surfaces which define with the leading edge of the shank opposite tapering spaces for receiving wedge members. Bolts are provided between the wedging members and holder to urge the wedging members longitudinally of the passage to wedge the shank in a selected position relative to the holder.

Abstract: An apparatus for preventing movement of a wheel on a shaft comprises a nut concentrically disposed on the shaft. A spring is disposed on the shaft and is operatively adjacent to the nut such that the spring can be biased towards the wheel. A first clamping ring is concentrically disposed on the wheel, with the first clamping ring being operatively adjacent the spring. A second clamping ring is operatively adjacent to the side of the wheel that is opposite to the first clamping ring, and a raceway is disposed between the shaft and wheel.

Abstract: The tapered dovetail joint is a method of joining two boards, or other rigid materials such as particleboard, wafer board, etc., by a unique type of modified dovetail joint. The modification to the classic dovetail joint includes tapering the dovetail pins as well as the dovetail tails with the same angle of taper in the same direction. The mating of this tapered dovetail joint will be greatly facilitated due to these corresponding tapers. The tapered nature of this joint minimizes difficulties in assembly due to the wedging action that takes place as the two boards are brought into union to create the joint. This wedging action allows the joint to be assembled even when there is moderate damage to the tails or pins including swelling—due to moisture, from the time of manufacture to time of assembly, impact damage, as well as minor manufacturing tolerance deficiencies in cutting of the pins and tails.

Abstract: A device for locking a disk or plate to a shaft, wherein the disk or plate has an opening therein corresponding substantially to the diameter of the shaft; the device comprising:a) a threaded bolt having an enlarged head;b) a wedge piece having a round outer surface interrupted by a tapered flat surface on one side thereof; the wedge piece having a throughbore through which the bolt is passed; andc) a nut for threaded engagement on the threaded bolt downstream of the wedge piece, the nut being bonded to the threaded shank adjacent the wedge piece.

Abstract: A mechanical safety breaker for disengaging a mechanical connection between two mechanical members at a time when a force transmitted through the connection of the two members exceeds a predetermined value is provided by employing an overload breaker element made of a ceramic. A ceramic breaker element provides a long time stabilized fracture performance particularly when the load applied thereto is of a repetitive nature.

Abstract: A screw-type extruding machine includes a housing; a driveable shaft disposed inside the housing and including a rotational moment transfer element; and at least one screw element. The screw element has two ends and defines a longitudinal groove therein for receiving the rotational moment transfer element of the shaft, the shaft thereby transferring its rotational moment to the screw element. The groove is configured such that it defines two expansion regions, each expansion region having an axial extent, the groove having side surfaces which diverge with respect to a longitudinal axis of the groove along the axial extent of each expansion region in a direction toward a corresponding one of the two ends of the screw elements, a width of the groove thereby increasing in a direction toward its two ends along each expansion region.

Abstract: An upper cover (12) and a lower cover (14) are fastened to each other on their front faces by a hexagon socket head cap screw (40). While a cover supporting column (34) is received on a column seat (38) of each fixation tongue (30) projected from the upper cover (12), the end face of the cover supporting column (34) is brought into contact with a column contact surface (36) of the fixation tongue (30). The hexagon socket head cap screw (40) is inserted through a spot facing slot (60) and a through slot (58) of the lower cover (14) and a through hole (48) of the upper cover (12) and eventually screwed into a tapped hole (42) of the cover supporting column (34). The cover supporting column (34) and the fixation tongue (30) of the upper cover (12) are positioned and fixed to each other via the hexagon socket head cap screw (40), which goes through the positioning through hole (48) of the fixation tongue (30) and is screwed into the tapped hole (42).

Abstract: A system for automatically centering and rigidly retaining a mixer shaft in a mixer drive. A hollow quill in a mixer drive is provided with an axial bore having a first diameter along a central portion thereof and tapering linearly and axially in opposite directions away from the central portion with increasing diameter to define a pair of opposed conical portions of the axial bore on either side of the central bore. A smooth-surface cylindrical mixer shaft inserted into the bore is retained by the tightening of upper and lower tapered cylindrical locks which are slidable along the mixer shaft and have conical outer surfaces which are matable with the upper and lower conical portions of the quill bore. The locks, when urged into wedged relationship between the shaft and the quill bore, automatically center the shaft in the quill in rigid retention. The upper end of the shaft is provided with a thrust plate secured by throughbolts into the quill to press the upper lock into locking relationship.

Abstract: Apparatus (300) is disclosed for locking a key (322) in a keyway (302) of a shaft (10) and of a hub slideably receiving the shaft (10). The key (322) is tapered and includes a top extending at an acute angle to the bottom, with the keyway (302) of the shaft (10) having a bottom wall (306) at the acute angle to the axis of the shaft (10). A push rod (312) is rotatable in an axial bore (308) in the shaft (10) and includes a threaded portion (318) threaded into a threaded counterbore (310) of the axial bore (308). The forward end of the push rod (312) is interconnected to the key (322) by a lip (336) formed in the key (322) extending into a notch (316) formed in the push rod (312). Rotation of the push rod (312) causes the push rod (312) to move axially in the axial bore (308) which in turn axially moves the key (322) in the keyway (302).

Abstract: This key comprises a pair of elongated blocks each having a tapered recess; a tapered pin adapted to be inserted in a tubular tapered portion which is formed by bringing the pair of blocks together in such a manner that the tapered recesses confront, and mutually displaceable in the axial direction; and a clamping member adapted to be screwed into a threaded portion provided on one end of the tapered pin or the tubular tapered portion. The key obtained by assembling these parts can be fitted into a key groove provided between a driving member and a driven member. The clamping member is rotated to mutually displace the tapered pin with respect to the tubular tapered portion in the axial direction, thereby separating the blocks from each other, thus pressing the outer walls of the blocks against the inner wall of the key groove. As a result, the key is firmly fitted into the key groove, and the drive member and the driven member can be securely coupled together with a higher reliability.

Abstract: A gear pump in which a gear is secured to a shaft by a press fit and by a key which fits into a slot in the shaft. The key includes radially projecting ears which fit into keyways in the bore of the gear, the keyways having bottoms facing axially toward the bottom of the slot. A hot upset at the free end of the shaft clamps the key axially between the bottom of the slot and the bottom of the keyways. When the shaft/gear/key subassembly is assembled with the body and the end plate of the pump, the gear retention elements described above coact to positively prevent the shaft from being pulled out of the body and from being thrust inwardly into contact with the end plate.

Abstract: A method for manufacturing a composite bicycle frame adapts stepped forming. The seat stays combined with the seat support means which are connected to parts of the top tube and seat tube, and the chain stays combined with the pedal support means which are connected to parts of the down tube and seat tube, are formed respectively. The seat stays connect to the chain stays by inserting a pair of rear wheel dropouts therebetween, to form substantially a pair of rear triangles of the bicycle frame. The seat tube and the steering support means connected to the top tube and down tube are laid up respectively. The cured rear triangles connect to uncured seat tube and steering support means associated with top tube and down tube, wherein the top tube, down tube, and seat tube form a front triangle. The front triangle is cured such that manufacturing of the whole bicycle frame is completed.

Abstract: A thermoplastic power transmission element having increased torque capacity. A power transmission element, such as a gear, pulley, sheave or sprocket, is formed of a thermoplastic material and includes a central hub arranged to surround and engage a keyed driven shaft. A metallic insert within the central hub engages the key to receive the driving forces transmitted therethrough. The metallic insert includes a plurality of mating surfaces engaging the central hub to distribute the driving forces over an area larger than the area of the keyway. Use of the metallic insert increases the torque capacity of the resulting power transmission element.

Abstract: A rotatable cylinder to which is secured a unitary sleeve having cutting lands for cutting and creasing sheet material such as paper and cardboard. The sleeve is secured to the cylinder to prevent relative movement during the cutting process.

Abstract: A device for fastening a die, such as a semi-cylindrical element on a tool carrying cylinder, which includes each of the dies having parallel extending ribs provided either with oblique surface portions or an oblique surface, the carrier is provided with circular grooves corresponding to the ribs and longitudinally extending grooves crossing the circular grooves which support locking rods. The device also includes an arrangement for shifting the locking rods from a released position to a locking position. In one embodiment, each of the locking rods has a notch for receiving the ribs and is provided with an oblique surface for engaging the oblique surface portion of the rib to lock the rib in the circular groove as the rods assume a locking position. In a second embodiment, each of the circular grooves has an oblique side wall and each of the rods urges the rib against the oblique side wall to cause a locking of the rib in the groove.

Abstract: Disclosed is a flywheel mounting device for an internal combustion engine in which a keyway extends along the tapered surface of a flywheel in the axial direction from the small diameter end portion thereof and terminates at an intermediate portion thereof, so that the tapered surfaces of the crank shaft and the flywheel are closely fitted together over the entire periphery thereof at the large diameter end portions thereof.

Abstract: A retaining washer (100) prevents the rotation of a D-shaped shaft (106) which is mounted in a round hole (105a) of a housing (105). The retaining washer includes a substantially flat washer (101) having a hole (101a). A tapered tab (102) includes a wide end (102a) and a narrow end (102b). The tab is attached to the flat washer at the wide end such that the tab is substantially perpendicular to the flat washer. A gusset (103) is attached between the tab and the flat washer. The gusset includes a lower edge (103a) which is positioned at an obtuse angle (104) relative to the flat washer. The gusset indents into the housing (105b) and the tab is forced against the flat portion (106b) of the D-shaped shaft. The upper left and right edges of the tab cut into the wall of the housing hole (105c and 105d).

Abstract: A locking wedge apparatus for fastening a printed circuit board within an elongated slot in a rack. The apparatus includes an elongated center wedge having sloped surfaces at its opposite ends and two end wedges abutting against the center wedge's opposite sloped surfaces. A screw interconnects the two end wedges, threadedly engaging a threaded bore in the remote end wedge. A friction nut is positioned on a portion of the screw's remote end that projects beyond the remote end wedge, and the apparatus is configured to include a pair of low-friction, abutting surfaces between the nut and the remote end wedge. This ensures that when the screw is fully loosened, the frictional torque applied to the nut by the end wedge is exceeded by the frictional torque applied to the nut by the screw. Further unthreading of the screw is thereby effectively inhibited.

Abstract: An arrangement for readily joining a plastic handgrip knob to a metal gearshift rod in a positive non-slip manner. The handgrip includes a plastic core member molded with an axial blind bore defining a linear key therein extending a predetermined axial distance from the upper terminus at the bore closed end to its lower terminus spaced from the bore open end. The junctures of the key sides with the internal surface of the bore define a pair of fillets coextensive with the key with the fillets being tapered from a maximum chordal distance at the key lower terminus to minimum chordal distance at the bore closed end. The rod is formed with a keyway extending from the rod upper end a predetermined distance sufficient to receive the key therein.

Abstract: A bending tool for a bending press comprising an upper die member detachably secured to a vertically reciprocable ram for bending a flat metal workpiece to a predetermined depth in a lower female bending die. The bottom surface of the female bending die cavity is formed by a plurality of flat headed pins in side by side slots or bores. The heads of the pins form the bottom flat surface of a longitudinal groove which forms the bottom die cavity surface. The vertical adjustment of the pins is provided by the interfitting combination of a left side wedge assembly, a middle wedge assembly and a right side wedge assembly. The interfitting prevents displacement of any one of the supporting assemblies for the pins to assure improved bending precision.

Abstract: A device for axially and circumferentially locking two stationary components of a turbomachine, each of which is at least part of a ring and wherein the components are concentrically engaged along opposed surfaces. The device comprises a locking member including a disc portion and an axially projecting angular segment on the disc portion forming a step thereon. The components have axially aligned intercommunicating hollows, the hollow of a first of the components having a laterally open recess. The locking member is engaged in the hollow of the stationary components in a locking position by inserting the disc portion into the hollow of the first component through the recess thereof, then axially displacing the locking member to engage the disc portion thereof into the hollow of the second component and thereafter angularly rotating the locking member to engage its angular segment into the hollow of the first component through its recess.

Abstract: A quick latch mounting device for securing a standoff device to a standoff bracket used in electrical power distribution systems. The mounting device includes a mounting member attachable to the standoff device and movable in a horizontal plane between a first position clamped to the bracket and a second unclamped position, and an actuator having either a cam or a lever for movement in a vertical plane. A clamping member is carried by the mounting member and operatively couples the actuator and the mounting member. The clamping member is slidably movable relative to the mounting member along oblique sliding interfaces to translate the vertical movement of the actuator into the horizontal movement of the mounting member so that the mounting member may be firmly clamped or unclamped to the bracket.

Abstract: Device for assembly of profiles by a groove, tongue fitting, with locking by key, which avoids the risks of tongue and key sliding along groove. The device consists of making one of the male elements, tongue or key, longer than the other, in the direction of the generatrices of groove, and making one of the side surfaces of the longer element concave along the generatrices of groove. The invention allows realization of trellis constructions having oblique bars.

Abstract: A tapered pin-key for securing a part and a shaft where the part has a cylindrical bore for receiving the shaft and a keyway tangentially intersecting the bore, and the shaft has a tangential groove shallower than the depth of the intersection of the keyway and the bore. The pin-key comprises two cylindrical surfaces converging at a small angle. The radius of the two cylindrical surfaces, the keyway, and the groove in the shaft, are all equal. The pin-key is placed in the keyway with one face engaging the surface of the keyway and the second face engaging the surface of the groove in the shaft, thereby securing the part and the shaft against relative rotational or axial movement.

Abstract: A throttle controlled induction passage assembly is shown as having a body with an induction passage formed through the body and a throttle shaft extending transversely of the induction passage and carried by the body, the throttle shaft having an axis of rotation about which the throttle shaft is rotatable, a throttle valve is carried by the throttle shaft for rotation therewith, and an abutment arrangement for preventing the throttle shaft and throttle valve from experiencing undue movement relative to the induction passage in both directions along the axis of rotation; a suitable thrust bearing is provided to permit application of the body and shaft in any position.

Abstract: An orthopedic traction frame for an adjustable hospital bed having relatively movable head and foot portions to adjustably position the mattress of the bed, the frame comprising of a pair of upright elongate support members for attachment to the headboard and footboard portions of the bed respectively, and a horizontal elongate support member interconnecting the upper ends of the same. The lower end of the upright member at the foot of the bed is pivotally attached to the footboard of the bed for movement about an axis perpendicular to the longitudinal axis of the bed, and adjustable clamping device is provided for attaching the upper end of the upright member at the foot of the bed to the end of the horizontal support member for pivotal movement of the upper end about an axis perpendicular to the longitudinal axis of the bed, whereby the foot of the bed may be retractably positioned and the traction frame adjusted for optimum load support at all positions of adjustment of the bed and mattress.

Abstract: A coupling for positively engaging solid and hollow driving and driven shafts, and for achieving shaft concentricity. Inclined and straight registering surfaces in the two shafts are coupled with keys having mating surfaces, with the keys being independently axially movable by bolts engaged with tapped openings in one of the shafts.

Abstract: The present specification discloses a tapered, longitudinally-split contractible taper bush for securing pulleys, sprockets, coupling flanges or other machine elements onto cylindrical shafts and utilizing a plurality of screws or bolts parallel with the hub axis for effecting wedging of the bush between the hub of the element and the shaft onto which it is mounted. Known bushes of this type suffer an out of balance moment due to the arrangemnt of locking holes, part threaded holes provided for de-wedging and bush removal, and the size of the longitudinally extending slit which is necessary to promote flexibility in the bush for bush removal.The present invention overcomes the out of balance problem by providing profiling in the region of the longitudinal slit so that the disposition of metal is then such as to compensate for the mass imbalance in both the bush and a co-operating mating hub, a rotationally balanced system being thus provided.

Abstract: An adjustable pulley construction including a first disc having a belt-engaging surface and a centrally located, internally threaded annular hub, the hub having an exterior flat face and an interior recess; and a second disc having a belt-engaging surface and a centrally located annular externally threaded axle, the annular hub of the first disc being coaxially with and movable relative to the axle. The belt-engaging surfaces are positioned in facing relationship to receive a pulley belt therebetween. Securing elements for maintaining a desired space relation between the discs, the securing elements include: a threaded bore disposed in the hub transverse to the axle, a set screw received in the bore, a longitudinal keyway in the hub communicating with the bore, a keyway land provided on the axle in line with the set screw, and a generally H-shaped key. The key is positioned within the recess in the hub and engaged by the set screw to provide a frictional clamping action of the key onto the keyway land.

Abstract: The invention relates to the textile industry and more particularly to looms. The device comprises a motor-reducing gear unit which can drive the dobby mechanism selectively, through a clutch, this mechanism being normally driven, from the main shaft of the loom by a pulley. A keying system enables the pulley to be made fast to or released from the shaft. The unit can, either drive the dobby mechanism alone for shedding motion searching, or drive the loom and the dobby mechanism for the slow speed operation of the loom. The invention overcomes the drawbacks of pulsed slow speed operation.

Abstract: An expansion dowel assembly is formed of an axially extending dowel body and an expansion member. The dowel body has a support surface inclined relative to the axis of the dowel body along which the expansion member can be displaced for anchoring the dowel assembly in an opening such as a borehole. At least a portion of the support surface is in the form of a groove extending in the axial direction of the dowel body and the bottom of the groove is inclined so that the expansion member is forced radially outwardly away from the axis of the dowel body as it is displaced through the groove.

Abstract: A locking device for securing a straddle-type adapter to the lip of an excavator wherein the C-clamp and wedge have cooperating arcuate surfaces and are bolted together whereby tightening the bolt moves the wedge on the arcuate surface of the C-clamp to tighten the fit of the adapter on the lip.

Abstract: In a torque transmitting coupling between a cylindrical shaft and a female member having a bore to receive the shaft, the shaft has a secant face and the female member has a connecting bolt bore which intersects the shaft bore and faces the secant face of the shaft. A connecting bolt in the bolt bore of the female member has a secant face which tightly engages the secant face of the shaft. In one embodiment, the shaft axis, secant faces of the shaft and bolt and the bolt bore are all parallel. In another embodiment the axis of the bolt bore is inclined at a small angle to the secant face, the bolt being of wedge form. A screw extending through a hole in the female member and screwed into a tapped hole in the bolt is rotatable to move the bolt axially and thereby wedge the secant face of the bolt against the secant face of the shaft. The secant faces of the shaft and bolt may have intermeshing longitudinally extending serrations.

Abstract: A wedge assembly that is easily inserted between two surfaces to be supported thereby, and thereafter expanded to produce a selected spacing between those surfaces. This wedge assembly has two outer members that are substantially identical except that they are mirror images of each other. Oppositely directed faces of these of these outer members are substantially parallel for the purpose of contacting the surfaces to be separated. The outer faces of these outer members that are directed toward each other are tapered so as to contact a center member having complementary tapers on both faces. A washer member is provided to contact a common end of the outer members, and a bolt member penetrates this washer and is threadably received in a receptor of the center member. As the bolt member is threaded into the center member, the center member is drawn further into the gap between the outer members and thereby separates these outer members to contact the surfaces to be separated.