Abstract: A shaft coupling comprising a joint element and two rings. The joint element has internal cylindrical parts, an external cylindrical part and a base connecting portion. The base connecting portion connects the base ends of both internal cylindrical parts and the external cylindrical parts. The rings are inserted into annular cavities enclosed by the internal cylindrical parts, external cylindrical parts and the base connecting portion. The internal cylindrical parts have tapered outer surfaces. The rings have tapered inner surfaces. The two rings are axially connected by set bolts. When the rings are tightened, the inner surfaces of the rings press the internal cylindrical parts and the outer surfaces of the rings press the external cylindrical parts.

Abstract: A coupling device for two flanged shaft ends is disclosed. A tapered pin bolt having a conical shank is employed within a complementary, internally tapered expansion sleeve having longitudinal slit. The pin bolt and sleeve extend through aligned bores provided in the flanges. The pin bolt is externally threaded on its opposite ends extending from the conical shank. A nut having an internal, axially extending and pin arrangement is mounted over each respective end of the pin bolt.

Abstract: An annular clamping member adapted, for example, to clamp a gear or a pulley to a plain shaft has a ring of alternately arranged primary and secondary sections (1 and 2) mutually interconnected by means of inclined ring portions (12) which, by a forced mutual displacement of the primary and secondary sections, are caused to change their inclination whereby an increase or decrease of the diameters of the clamping member is obtained.Such a clamping member may be used for clamping a transmission element exactly coaxially to a shaft or may be formed as a hub of such a transmission element.

Abstract: A pair of relatively telescoped inner and outer sleeves are provided and the inner sleeve includes first and second end portions. The second end portion of the inner sleeve includes at least one generally radial slot formed therethrough and defines a step recess opening radially outwardly of the inner sleeve and longitudinally therealong outwardly of the first end of the inner sleeve. The outer sleeve defines a radially inwardly opening recess which also opens axially in a direction in which the second end of the inner sleeve faces and the step recesses are registered with each other and together define a circumferential cavity between relatively telescoped portions of the inner and outer sleeves.

Abstract: A connector for and a method of connecting pipe members for a variety of purposes including (but not limited to) plumbing, hydraulics, pneumatics and medical purposes. Wherein the connector which can be used in conjunction with other fittings, has a connector body with an opening to receive a pipe and a tapered internal bore in the opening to receive a substantially coaxial inner sleeve adapted to engage the surface of the pipe in the connector. After insertion, the pipe is then moved in an opposite direction to the direction of insertion and the inner sleeve is adapted to slide wherein internal bore to wedge into frictional engagement and connection with the outer surface of the pipe and the tapered surface of the internal bore so that when the pipe is sealably engaged within the connector the pipe can be disengaged from the connector by a reverse operation.

Abstract: To prepare a split frustoconic jaw intended for the anchoring of a cable, a part is first taken bounded externally by a frustoconic surface and hollowed by a cylindrical axial channel whose inner surface is advantageously striated. This part is sawed into by substantially axial and radial slashes leaving bridges to subsist of small thickness at the bottom of these slashes throughout the central channel. An assembly ring is mounted in an outer annular groove and the whole is subjected to cementation treatment so as to surface harden the jaw while making the bridges fragile.

Abstract: Coupling of two flanged shafts end-to-end by means of taper pin bolts and expansion sleeves cooperating with the pin bolts and having the same conicity, said sleeves extending into bores provided in said flanges and said pin bolts having external threads on both ends, a first end being located on the small side of the taper cone and a second end on the large side of the cone, is accomplished by:(a) inserting each pin bolt together with its sleeve into the corresponding bores,(b) screwing a nut onto the first end of the pin,(c) exerting a tractive force on the second end by means of a cylinder, the nut of the first end bearing against the corresponding flange,(d) while maintaining the tractive force on the second end, applying a nut against the second corresponding flange by screwing the nut up on the second end of the pin bolt,(e) and pushing back the sleeve toward said second end and cancelling the action of the cylinder.

Abstract: In a combustion engine, a flywheel is coupled to a crankshaft, the flywheel and crankshaft being in splined engagement. To eliminate play between the flywheel and crankshaft which occurs under conditions of torque fluctuation due to clearance between the meshing teeth, a deformable member is provided to reduce this clearance. The deformable member includes a bore with teeth therein also in mesh with the crankshaft teeth. In one embodiment, the deformable member is a hub on the flywheel compressed by an element movable against it by a bolt. Opposed tapered surfaces compress the deformable member as the bolt is tightened. In another embodiment, the deformable member is a separate element and is tapered and fits within a tapered inner surface on the bore of the flywheel. As the deformable member is pressed against the flywheel by the bolt, it is simultaneously compressed by the action of the opposed tapered surfaces.

Abstract: A wedge-type anchor for stranded tension cables. It has anchoring wedges that rest in a conical wedge-reception bore in a wedge mount. The wedges have teeth on their inner surface that decrease in depth toward the point of the wedge. To allow the anchor to be utilized at cryogenic temperatures without the core sliding through and the outer strands breaking prematurely, the ratio of the pitch (8) of the teeth to the diameter of the cable is between 1:20 and 1:30 at a ratio of the effective compression length (11) of each anchoring wedge (4) to the diameter (5) of the cable of between 2.8 and 4.5, and the teeth at the point of the wedge have a contact surface that tapers at an angle (13) of 4.degree. to 6.degree. to the longitudinal axis.

Abstract: A shaft and pulley assembly for a blower having a scroll housing containing an impeller utilizes a square section shaft having a pulley retained thereon, an impeller having a hub with inner surfaces which lie in face-to-face contiguity with the shaft, a pair of adaptors having inner surfaces which also lie in face-to-face contiguity with the shaft and having curved external surfaces which support the adaptors from bearings which are themselves carried in bearing housings which are fixed with respect to the scroll housing, at least one of the adaptors having latches thereon which retain its said bearing against displacement.

Abstract: A tine holder for turf aerating equipment includes a horizontal tine arm having a plurality of spaced apertures therein corresponding to mounting positions of the coring tines. The hollow tines are outwardly tapered at their upper ends and the apertures in the tine arm are of a diameter equal to the inner diameter of the upper ends of the tines. A tine holding bar disposed beneath the tine arm is provided with tapered apertures aligned with the apertures in the tine arm. The taper of the bar apertures corresponds to the taper of the tine upper end and permits the seating of the coring tines in the apertures with a small portion of each tine extending thereabove. A plurality of bolts passing through aligned bolt holes in the tine arm and tine holding bar permit a clamping of the tines against the tine arm in alignment with the tine arm apertures.

Abstract: The present invention relates to an arrangement for an axle (4) which is anchored at two points situated at the ends of the axle (4), preferably in mounting cheeks (1, 2) or the like provided with through-bores (5, 6) for the axle (4). Anchoring is accomplished by nuts (7, 8) which can be screwed on outside the fixing points. On a central cylindrical part (9) the axle is designed to have a bearing (10) mounted on it which is fixed by spacer elements (11, 12) disposed on the axle (4) and bridging the distance between the respective fixing points and the bearing (10).According to the invention one (11) of the spacer elements (11, 12) is disposed fixed relative to the cylindrical part (9) of the axle (4). The arrangement comprises two expanding sleeves (13, 14) which can be inserted in the through-bores (5, 6) and have inwardly-facing and/or outwardly-facing conical shaping.

Abstract: The present invention includes a tubular body member with a central bore which has two spiralling or threaded interior surfaces, each interior surface having a leading edge at nearly right angles to the longitudinal axis of the body and a sloped or tapered trailing edge along the bore from an end portion toward the central portion of the bore. The upper portion of the body has a left-hand spiralling or threaded surface. The lower portion of the body has a right-hand spiralling or threaded surface. Inserted into the central portion of the body member from each end is a slip segment or member. The outer surface of the upper slip segment has a left-hand spiralling or threaded surface, whereas the outer surface of the lower slip segment has a right-hand spiralling or threaded surface. Each such spiralling or threaded surface conforms to the spiralling or threaded surface of the corresponding interior surface of the stabilizer body.

Abstract: A high ratio semi-floating drive axle is disclosed. The axle includes a pair of axle shafts which are prevented from pulling out of the differential side gears by retainer ring assemblies which engage grooves around the axle shafts and are held in the grooves by snap rings which encircle the retainer ring assemblies.

Abstract: A self-tightening shaft coupler includes a rigid, elongate coupling sleeve having an externally compressible collet threaded into each end. The collets engage the ends of the shafts which are to be joined such that the shafts are coupled to one another through the coupling sleeve. The threading of the collets and the coupling sleeve is such that rotation of the shafts in a predetermined direction tends to tighten the collets onto the shafts whereby self-tightening action is achieved.

Abstract: A ball stop is locked to a cable by inserting the cable through an opening in the ball. The ball is then rigidly clamped in place by a wedge which is inserted into the aperture surrounding the cable and threads in the aperture and on the external part of the wedge mate and are screwed together to cam the wedge into frictional engagement with the cable.

Abstract: A device for providing a clamping joint comprises two elements (1,2) with complementary threads, each having a flange constituting a clamping surface. Clamping takes place upon relative axial displacement of the elements (1,2) which can be brought about by screws (4) arranged axially in bores in a flange (5) on one element. In order to prevent accidental disengagement of the elements, at least one of the threads adjoins at one end to a part (6) which is wedged against an opposing thread flank when the elements (1,2) are rotated in relation to each other over a predetermined end position.

Abstract: A drop wire clamp is provided for suspending a coaxial cable drop wire or the like. The clamp is of molded plastic resin material comprising a body having converging clamping surfaces on the interior thereof, and a two part wedge having external tapered surfaces engageable with the body converging clamping surfaces to wedge the two parts of the wedge together. The two parts of the wedge have confronting surfaces defining a channel for gripping a cable. The channel undulates transversely longitudinally thereof, and a pair of smaller adjacent, parallel channels of similar undulating construction are provided on either side of the first-mentioned channel for gripping a messenger wire. An extension of the body is provided with an eyelet for hanging over a hook or the like.

Abstract: An extractor for an increment borer (1), which increment borer (1) consists of a tubular body having internally a cylindric portion, which transforms to a conic portion (6), and which on the outside is provided with bore threads (4). According to the invention, an end piece (10) is provided for being attached to and detached from the rearward end of the blade (9). The end piece comprises a sleeve (12) and a domed nut (14), each of which are provided with threads (13,15) arranged so, that the sleeve (12) and domed nut (14) are axially movable relative to another. The end piece (10) further comprises an oblong conic locking pin (16) intended to be inserted together with the rearward end of the blade (9) into an axial through hole in the sleeve (12). The domed nut (14) is intended at its threading on the sleeve (12) to axially move the locking pin (16), which thereby is pressed against the blade (9) located between the locking pin (16) and the wall of said hole of the sleeve (12).

Abstract: The pressure plate unit for a motor vehicle friction clutch comprises a clutch housing (1a), a presser plate (3a) arranged in the clutch housing (1a) and guided non-rotatably but axially displaceably on the clutch housing (1a) and a clutch spring (13a) of substantially annular washer form arranged limitedly radially displaceably in the clutch housing (1a). The clutch spring is supported in the region of its external circumference axially on the clutch housing (1a) and on a diameter smaller than the diameter of the external circumference axially on the presser plate (3a). At least one radially resilient spring element is braced in between the clutch housing (1a) and the clutch spring (13a). The spring element holds the diaphragm spring in its original position in which the pressure plate unit was balanced in assembly, even during operation.

Abstract: A tine holder for turf aerating equipment includes a horizontal tine arm having a plurality of spaced apertures therein having a diameter substantially equal to the inner diameter of the upper ends of the tines. The hollow tines are substantially cylindrical at their upper ends and abut the tine arm in alignment with the tine arm apertures. A tine holding bar disposed beneath the tine arm includes a plurality of tapered apertures aligned with the apertures in the tine arm. The tines pass through the tine holding bar apertures and are secured in position by split collets having frusto-conical exterior surfaces which seat within the tapered apertures of the tine holding bar. A plurality of bolts passing through aligned bolt holes in the tine arm and tine holding bar provide a tightening of the split collets to secure the tines in position against the tine arm.

Abstract: The apparatus comprises a first conical ring which acts from the inside against a radially thin walled portion in the center opening of the disk and a second conical ring which acts against a radially thick walled partial area located adjacent the disk. The thin and thick walled portions are part of a flanged hub ring which is connected with the disk by bolts.

Abstract: A friction-transmitting shaft/flange connection has a pressure ring arranged to be seated on a shaft and having a conical ascending surface, and a clamping ring having a pressing surface with which it is clamped on the ascending surface of the pressure ring and an end surface which is simultaneously connected with the flange in a friction transmitting manner.

Abstract: A device for coupling a shaft and the hub of a machine element such as a pulley or gear for joint rotation, includes annular outer and inner wedges each of which has angularly spaced longitudinal slots, and ribs aligned with the slots. The wedges telescope so that the ribs of one wedge extend into the slots of the other, aligning longitudinal bores of the ribs to receive fastening elements such as screws. The fastening elements thus impart relative axial movement to the wedges to expand the same radially into gripping engagement with the shaft and hub.

Abstract: A two part connector with one of said parts providing an elongated cylindrical bore and the other a pin with a flared end, and with an expansible compression ring on the pin urged by a compression spring outwardly of said flared end to grip said bore.

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: There are disclosed several embodiments of a well tool having a slip assembly which is adapted to grippingly engage a cylindrical surface within a well conduit, and which includes a sleeve carried by a body adapted to be lowered into the well conduit so as to dispose a relatively high friction surface about one side of the sleeve opposite the cylindrical surface. The sleeve is split about its circumference and has end edges which extend at an angle with respect to the axis of the sleeve and are arranged to slide over one another as the sleeve is caused to move between expanded and contracted positions into and out of gripping engagement with the cylindrical surfaces.

Abstract: Apparatus for mounting supply and exhaust air valves or other ventilation elements in ventilation conduits comprising one or several anchor devices which are attached by a base onto the back side of the element. From the base extends a triangular intermediate section. One triangle side borders the base, and a second triangle side borders an outward extending wing with circumferential orientation relative to an opening in which the element is to be fastened. The wing is divided by slots into tongues, and the free ends of the tongues are pointed and bent outward in direction toward the walls of the opening. Different configurations of the anchor devices are shown.

Abstract: A corrosion resistant shaft and boss clamping device comprises an inner race to be fit over the shaft, an outer race to be fit inside the boss enclosing the shaft and the inner race, the races having wedge-shaped surfaces facing one another, a pair of taper rings having a complementary wedge shape disposable between races, and, bolts adapted to urge the taper rings toward one another, thereby clamping the shaft to the boss. The inner and outer races are expansible and contractable, being made of split rings of austenitic stainless steel. The clamping bolts are made of precipitation hardened stainless steel, and one of the taper rings is provided with a hardened nitrided layer on the surface thereof to be contacted by the clamping surfaces of the clamping bolts.

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 burnable poison rod for use in a nuclear reactor fuel assembly which includes concentrically disposed rods having an annular space therebetween which extends the full length of the rods. The inner rod is hollow to permit circulation of coolant therethrough. Annular burnable poison pellets are positioned in the annular space which is closed at both ends by plugs. A spring clip is located in the plenum space above the pellet stack in the rods. The spring clip is of cylindrical configuration having a gap in the material which provides two ends adapted to be squeezed toward each other. A cross section of the clip shows that its ends contain alternating flat and round edges, the round edges conforming to the outer rod inner surface to provide a retentive force which is releasably applied to the pellet stack as it grows during operation in a reactor.

Abstract: An anchor pin assembly (100) for a drum brake (10) is provided. The anchor pin assembly is mountable to a drum brake spider (14) provided with an anchor pin receiving bore (34). The assembly includes two anchor pin pieces (102 and 104) having inclined ramps (116 and 118) formed on the inner ends thereof, an expansion member (120) having mating ramps (122 and 124) formed thereon and a bolt (132) and nut (138) for applying an axially inward compressive force to the pieces to cause radially outward expansion of the expansion member.

Abstract: A structure for securing a cylinder drive gear to a cylinder shaft in a printing machine comprises a cylinder having an end shaft, a cylinder drive gear inserted and fixed by bolts onto said end shaft, a pair of taper rings with their taper faces being in contact with each other, one of said taper rings being mounted on said end shaft such that the movement in the axial direction is limited by said cylinder drive gear, another taper ring being mounted slideably on said end shaft, and a device for tightening said another taper ring toward said cylinder drive gear so that both taper rings expand in the radial direction.

Abstract: A junk basket for collecting junk from a well bore and adapted for external connection to a well drilling string. The junk basket includes an elongate body having an annular interior for a releasable attachment to the exterior of a portion of the drilling string. The body includes an upwardly directed cavity for receiving junk from the well bore and one or more drain holes through the body adjacent the bottom of the cavity for draining fluid. Ribs are provided in the cavity connected to the body for engaging the exterior of the drilling string for reinforcing the body and guide means, preferably positioned on the top of the ribs, extend upwardly for preventing the top of the body from catching on downwardly facing shoulders in the well bore.

Abstract: Disclosed is an improved clamping device for keyless mounting of a hub on a shaft of the type comprising an inner wedge ring having a cylindrical inner surface for gripping the shaft when contracted and an outer wedge ring having a cylindrical outer surface for gripping the bore surface of the hub when expanded. The pair of wedge rings have interracting annular surfaces with matching shallow-angle tapers and at least one has a stable dry anti-friction material coated thereon. The pair of wedge rings placed in the annular space between the hub and shaft are engaged with axial force means to cause the outer wedge ring to expand and the inner wedge ring to contract and thereby lock the hub to the shaft.

Abstract: This is an improved blast joint for subterranean wells which is ideally suited for applications where corrosive compounds such as hydrogen sulfide and carbon dioxide are encountered. The blast joint comprises a plurality of temperature and corrosion resistant hard rings which are in a stacked end face-to-face array, coaxially carried on a length of tubing. The rings are resiliently compressed in the array by spring washers interspaced by flat washers and this assembly is retained by end collars distally carried on the tubing. The end collars which are employed in this invention have a collet type construction; each collar comprising a clamp ring slidably received over the end of the production tubing, having an internally threaded outer end and a tapered inside wall. A collet sleeve with a tapered outside wall is received in the clamp ring.

Abstract: A steering shaft (10) includes an outer shaft (12) defining a bore (14) telescopically receiving an inner shaft (16). The inner shaft defines resilient tangs (38) frictionally engageable with the outer shaft to prevent relative axial movement of the shafts. The tangs define a tapered recess (42) and a tapered member (44) is received in the recess. The tapered member movably engages the tangs to frictionally engage the tangs with the outer shaft. A key (46) carried by the tapered member extends radially outwardly between the tangs and is slidably received in a keyway (50) defined by the outer shaft to couple the shafts for rotation in unison. An elongated rod (52) coupled to the tapered member extends through a bore (36) in the inner shaft and threadably carries a nut (56) engaging the inner shaft. Rotation of the nut moves the tapered member engaging the tangs with the outer shaft and preventing relative axial movement of the inner and outer shafts.

Abstract: A clamping connection clampingly joins an external structural part, such as a gear, with a shaft. The connection includes a conical clamping set having a plurality of interengaging conical rings for generating radial clamping forces. The connection includes a longitudinally slit element which directly engages the shaft and a key which enters the longitudinal slit of such element in a region of the element which is at or near the conical clamping set. The key and the longitudinal slit are so dimensioned that the flanks of the longitudinal slit abut the key prior to complete tightening of the clamping set.

Abstract: A tapered bushing and hub assembly for mounting on shafts sheaves, gears, sprockets, couplings and similar machine elements, in which a tapered, split bushing is inserted in a tapered bore in the machine element and a plurality of lugs secured by screws onto the hub force the bushing inwardly into the tapered bore, seating the bushing into face-to-face contact with the tapered surface of the hub and contracting the bushing firmly onto the shaft. Holes for the screws are provided in the hub and are arranged parallel with the axis of the bore, and preferably extend through the hub. Each lug bears against the side of the hub and the large end of the bushing as the screws are tightened into their respective holes. When the machine element is to be removed from the shaft, a lug may be secured by the screws on the opposite side of the hub to force the bushing outwardly from the tapered bore.

Abstract: A coupling between a roll of a heavy rolling mill and a cardan shaft, wherein the roll and a connecting member are joined by a mortise-and-tenon joint with the roll having a projection and the connecting member having a recess to receive said projection, the joint being such as to prevent relative rotation. The leading end of the projection and the base of the recess have respectively a pair of mutually corresponding conical surfaces which are coaxial with the axis of the projection and are urged into engagement in order to align the axes of the roll and the connecting member.In order to achieve rigid coupling of the roll and the connecting member, there is provided a split ring which in unmounted condition is axially movable along the said projection and which is radially compressible by closure of the split or splits to grip the said projection.

Abstract: A linear torque and thrust transmitting wedge bushing (10, 100) for axially and rotationally securing a part (13, 120) to a circular cross-section shaft (11, 122) is positioned over the shaft within a circular cross-section opening of the part. The bushing includes inner and outer wedge rings (12 and 14; 106 and 108) concentrically disposed relative to each other and being radially expandable and contractible. The outer wedge ring has an outer axially straight surface (20), for engaging the inner surface defining the opening of the part, and the inner wedge ring has an inner axially straight surface (22) for engaging the outer surface of the shaft, characterized in that the wedge rings have engaging non-slip surfaces (16 and 18; 102 and 104) that are axially inclined at the same low angle of less than 10.degree.

Abstract: An end member positioned against the end of a handle bar is engageable with a throttle sleeve rotatably mounted upon the handle bar. The end member also includes an expansion member residing within the handle. A manually movable expander selectively moves the expansion member into frictional engagement with the inside surface of the handle bar for retaining the throttle sleeve at rotatably selective positions relative the handle bar.

Abstract: A dock clamp employed in combination with a dock support structure that supports a dock section at an adjusted height by means of post members that are slidable within corresponding sleeve members attached to the dock section, the dock clamp serving to provide a fixed frictional coupling between a pair of corresponding post and sleeve members. The dock clamp includes a pair of rigid pieces each having an open end and a pronged end with a tapered configuration that is wedged between corresponding post and sleeve members at opposing ends and at one side of the sleeve member for applying a radial force in a direction that drives said post and sleeve members together at the side opposite to said one side in response to an applied axial force. The dock clamp further includes fastener means for applying an axial force by forcing facing open ends of said pair of rigid pieces toward one another.

Abstract: A shock and vibration-proof fastener of general application and particularly suitable to hold dual wheels demountably assembled to a cargo vehicle hub. The fastener is designed to isolate the threads thereof from radial and torsion stresses utilizing a split collet encircling the shank of the fastener with its periphery converging toward the collet ends at angles of the order of 4 to 1 relative to the collet axis and having a nesting interference fit with a similarly tapered bore through the parts or wheels to be clamped together. The fastener shank has a threaded well in one end mateable with a cap screw having a self-aligning conical surface on the underside of its head engaging the rim edge of a loose fitting washer. The self-aligning surfaces are preferably provided with a ring of teeth and notches interengaging along helical surfaces having a pitch substantially greater than that of the fastener threads.

Abstract: A brake disk particularly for railway vehicles has a brake disk annular element mounted on a hub by at least three radially extending adaptor sleeves seated in radially opposed bores in the hub and annular element. A conical member within an end portion of the adaptor sleeve can be moved inwardly by tightening a bolt passing through the adaptor sleeve so as to expand radially the end portion of the sleeve against the wall surface of its respective bore.

Abstract: A thin-walled hollow metal cylinder is rotatably held at its ends between holding flanges which are mounted with a pressure-tight seal on an opposing aligned pair of rotatable hubs. The spacing between the hubs can be adjusted. In one embodiment, the hubs are supported on a hollow pipe arbor and make a pressure-tight seal against it. In another embodiment, one hub is mounted on a stub shaft which is held in bearings and another is held in the head stock of a lathe in proper alignment. In both cases, a pressure medium, air, is supplied to the inner space of the cylinder through the arbor at a pressure of about 0.5 to about 1.0 atmospheres to increase the inherent rigidity of the cylinder. This improves the stability of the cylinder for various processes, such as for photoengraving of the surface of the cylinder to prepare it as a screen-printing stencil.

Abstract: A composite metal end cap for use with a ceramic roll in a ceramic roll conveyor for conveying glass sheets for thermal treatment comprising a flexible metal inner end cap member adapted for mounting in direct contact over an end of the ceramic roll and a rigid metal outer end cap member adapted for mounting over the inner end cap member, and means for moving said outer end cap member axially relative to said inner end cap member so as to increase radial clamping of said flexible metal inner end cap member against said ceramic roll on axially inward motion of said rigid, outer end cap member relative thereto in a controlled manner and to permit release of said flexible radial clamping between said flexible, metal, inner end cap member and said ceramic roll in response to an opposite direction of axial movement of said rigid, metal, outer end cap member.

Abstract: A stabilizer sleeve, or other sleeve, to be releasably mounted on a drill collar for centering a drill string in a well bore, includes an outer stabilizer sleeve to be mounted on the cylindrical periphery of the drill collar and having an internally threaded bore, the threads of which have conical roots, receiving an externally threaded yieldable sleeve member placed over the drill collar, the crests of the external threads also being conical, rotation of the yieldable member threading it into the stabilizer sleeve and effecting its contraction until its internal surface contacts the periphery of the drill collar, further rotation and tightening of the sleeve member in the stabilizer sleeve compressing the sleeve member against the drill collar periphery, with the crests bearing against the root portions of the internal sleeve threads to secure the sleeve frictionally in position on the drill collar.

Abstract: An improved hub-locking device for conveyor pulleys including a spherically shaped collet having a centrally located bore for receiving a shaft, an axially aligned slot extending through one side thereof permitting compression of the collet on the shaft, and a plurality of radially extending lugs, a hub attached to the end of the pulley and having an axially aligned tapered aperture for partially receiving the collet with the shaft therein and a plurality of radially extending recesses for receiving the collet lugs, a clamping ring having a tapered aperture for partially fitting over the collet, and a plurality of bolts for passing through holes in the clamping ring, for threading into the hub and for drawing the clamping ring toward the hub compressing the collet therebetween with the lugs within the recesses, and causing the collet to compress and engage the shaft, the hub and the clamping ring.

Abstract: An arrangement is provided for securing together two hollow members of a framework of a bicycle, wherein one of the members passes through an aperture in the other. A pair of split collets surround the one member and extend into the aperture from opposite sides thereof. The one member has a tube secured to its outer surface in abutment with one of the collets, and this member is threaded and receives a nut which exerts pressure on the other collet. Tightening of the nut on the threaded member urges the collets into the aperture and secures the two members together. The one hollow member may have mounted therein bearings and a shaft of a pedal assembly of the bicycle.