Abstract: The connecting device for a wheel includes an outer ring having axial slits, an inner tapered surface, an inner threaded surface formed adjacent the maximum inside diameter end of the tapered surface, and an outer peripheral surface. A split inner ring having a tapered surface complementary to said tapered surface of the outer ring placed on the shaft and includes an annular groove formed at the maximum outside diameter end side of the inner ring tapered surface. A nut, having a threaded surface, is threadably engaged with the threaded surface of the outer ring. The nut includes annular projection fitting into the annular groove in the inner ring and has a seating surface perpendicular to the shaft.

Abstract: A rod-piston connection uses a split ring, having two or more segments, provided with a plurality of shallow internal grooves which are adapted to mate with a corresponding plurality of shallow grooves on the piston rod, the outer periphery of the split ring having a tapered surface extending over the entire width of th split ring and adapted to mate with a corresponding wide tapered surface defined in a bore of a compression bushing which has a peripheral surface provided with threads which engage with an internal threaded surface in a cavity in the pistion. By applying a threading torque to the compression sleeve, a force is generated by the two tapered surfaces to force the compression sleeve into better contact with the pistion and to force the split ring into a better contact with the piston rod.

Abstract: An automatic control device for cable control systems comprising a first member adapted to be fixed, a second member connected to the conduit of a cable control system, and a third member interposed between the first member and the second member. The third member has one-way ratcheting teeth engaging complementary teeth on the first member. A spring is interposed between the third member and the second member. The second member includes circumferentially spaced helical teeth that engage complementary grooves in the first member. The second member further includes circumferentially spaced longitudinally extending ribs which engage the grooves of the third member. The device includes a mechanism for locking the parts together against longitudinal movement.

Abstract: A parking meter anchor includes a mounting bolt extending from a vault chamber of the parking meter head through a tapered mounting base extending therefrom and into an interior of a hollow post. An anchor nut is received on the mounting bolt and carries toothed expansion wedges which are held against an inside of the post by tapered surfaces of the mounting base and by radially extending tongues on the anchor nut.

Abstract: A method of using a tolerance ring in conjunction with a relatively soft material while preventing deformation of the soft material is provided through the use of a split cylinder shim between the tolerance ring and the soft material. This arrangement can be used whether the soft material is surrounded by the tolerance ring, surrounds the tolerance ring or both.

Abstract: A strain relief device for resisting strain forces acting in a direction of pull-out of a cable relative to a cable closure, comprises a cable gripping member having at least two complementary jaw-like segments alignable for defining therebetween a tubular through opening sized for gripping a cable of a given diameter therewithin and an outer surface of predetermined configuration. These jaw-like segments have interengageable edge surfaces for defining a maximum inwardly compressed condition of the through opening corresponding to a predetermined limited maximum compression of the given diameter of cable for substantially preventing damage thereto. A generally annular locking member comprises a pair of locking segments defining an inner surface formed for complementary surrounding engagement with the gripping member outer surface and coupling structure for releasably coupling the locking segments together about the gripping member to retain the same in gripping engagement with the cable.

Abstract: A magnetic sensor system for spindle orientation in which a magnetic body is attached to a rotating spindle and a magnetic signal from the magnetic body is detected by a sensing unit arranged on a mechanically stationary member to detect the rotational position of the spindle. A pair of wedge-shaped, annular fastening elements are fitted onto the circumferential surface of the spindle in such a manner that tapered portions thereof oppose each other, thereby rigidly securing an accommodating ring and a cover body together on the spindle.

Abstract: The invention disclosed herein concerns a drill stem intended for sinking shafts in the ground, especially for the oil and natural gas industry. It has on its outer periphery a surface of revolution providing a succession of hollow profiles with a rounded shape relative to the axis of the stem, said surfaces for revolution being adapted to rest against the internal faces of complementary shape of self-gripping slips which ensure holding of the drill string.

Abstract: A horizontal mixing aerator rides on a upright mast or beam for submersion in a body of liquid such as a sewage equalization basin, oxidation ditch or sludge holding tank. The aerator has a submersible mixer motor driving a propeller which is mounted to the beam by a slidable bracket arrangement for height adjustment. The bracket is also swingably mounted to the beam for adjustment of the vertical plane angle and the beam is rotatable for azimuth changes in the direction of liquid flow. A lower bracket stop includes vibration reducing elements. An upper azimuth lock also includes vibration reducing elements. The locking parts have a high co-efficient of friction.

Abstract: A steam generator having a steam generator chamber, a tube plate bordering the chamber, tubes terminating in the tube plate being accessible through the steam generator chamber, a tubular column in the steam generator chamber having an end facing toward the tube plate, and a swivel arm extended from the tubular column being movable parallel to the tube plate for carrying a device for testing and/or repairing the steam generator tubes, includes a clamping element for positioning the tubular column relative to a tube of the tube plate, and a coupling being detachable from outside the steam generator chamber connecting the clamping element to the tubular column, the clamping element including a drive element disposed in the tubular column, an expansion plunger connected to the drive element for axially inserting the expansion plunger partially into a tube, an expansion sleeve formed of separate clamping jaws for engaging the tubes, the clamping jaws having ends being insertible into a tube, and a holding element

Abstract: A reversible wedge gripping assembly is provided for elongated objects, such as cables or bars, comprising an elongated casing which is open at both ends and which defines a passage adapted for receiving said elongated object, and a first pair of wedge-shaped clamping jaws, which are mounted in the passage of the casing for gripping said elongated object. Each of the two clamping jaws has, in its inner surface a longitudinal groove having two flat side walls which converge towards the bottom of the groove and each of which makes a predetermined angle with the plane in which the two clamping jaws move.

Abstract: A wire gripper (48) includes a housing (50,52,56) that defines a chamber (62) which has sidewalls (64) that taper in an axial direction. Jaws (66) are closely and slidably received into chamber (62). Axial spring (74) biases jaws (66) axially outwardly relative to chamber (62). Radial springs (78) bias jaws (66) toward sidewalls (64). A double-acting cylinder (94) moves housing (50,52,56) axially outwardly to tighten jaws (66) around a wire (200), and axially inwardly to move jaws (66) against jaw stop (88) to open jaws (66). Preferably, axial movement of wire (200) pulls pivoting blades (6,8) closed. Gripper (48) may be modified to cut or punch wire (200) rather than grip it.

Abstract: The invention provides an anchorage device for a cable with multiple strands (2) comprising a block (1) in which the strands are anchored individually by radially clamping about each strand a split truncated cone shaped jaw (3) surrounding this strand and housed in a complementary housing (4) of the block. This device comprises a single thrust member (6) disposed axially opposite the different jaws (3) and a plurality of spacers (10) each interposed axially between said member (6) and a jaw (3) about the strand end (2) clamped by this jaw, said spacers (10) being identical to each other, formed from a metal or an alloy whose deformation/stress characteristic has a long plastic flow plateau and dimensioned so that at the end of the thrust the deformation of each of them has reached, but not exceeded, the plastic flow stage thereof.

Abstract: The device comprises a base (1) having an opening and a tapered orifice (7) in the interior. A conical body (8) is housed within the tapered orifice, the conical body (8) consisting of two elements (10) which form a central threaded opening (9). The elements (10) resist longitudinal displacement but are capable of radial displacement. The elements (10) are identical and each one of them is provided with a recess and a projection so that they can engage with each other. The device also comprises a spring and a closure head (14).

Abstract: A pipette is disclosed which includes a pipette body, a tip locking mechanism, and a disposable pipette tip. The pipette body has a plunger which reciprocates into and out of an interior air filled chamber. This air forces a measured amount of liquid into or out of the tip. After pipetting, an over-stroke of the plunger discharges a blast of air to assure discharge of all the fluid. In one embodiment, a further over-stroke unlocks a mechanism holding the shell in place and actuates tip disposal and replacement. The shell surrounding the pipette body is depressed by the plunger shaft. Fingers formed from the lower end of the shell are pushed outward by cam action with the pipette body. As the fingers spread, the tip falls free. A replacement tip is then attached. The fingers also define a funnel which guides the replacement tip on to the point where it snaps into position.

Abstract: A device for connecting a wheel or wheel-like body to a shaft has tapered inner and outer wedge rings that can be formed over one another using a captive nut. An expanded inner ring has axial slits and fits over the shaft. The inner ring has a tapered outer peripheral surface portion and a threaded cylindrical portion extending along the shaft. An expandable outer ring has a plurality of part-cylindrical segments and can be inserted between the inner ring and the wall of an axial bore in the wheel or wheel-like body. The outer ring has a tapered inner surface which is complementary to the tapered outer surface of the inner ring. The outer ring has a first annular groove formed in its inner peripheral surface adjacent to its minimum inside diameter end and a second annular groove formed in its outer peripheral surface. The segments are held together by a retaining ring fitted in the second annular groove of the outer ring.

Abstract: The assembly includes three damper shoes that are guided by and wedged transversely between two wedge rings, one having three curved flats and the other having three planar flats that respectively contact conforming contact surfaces of the damper shoes. The assembly is particularly useful in a frictionally damped suspension strut.

Abstract: A mounting device for anchoring a machine element coaxially on a rotary shaft. The device fits between the interior cylindrical bore of the machine element and the internal cylindrical surface of the shaft and is effective to position the element at any desired position longitudinally of the shaft and at any angular position circumferentially of the shaft. The device has first and second segmented sleeves. The second sleeve has separate internal and external parts so as to afford expansion and contraction of the external part by wedging the internal part of the second sleeve between the external part and the first sleeve, allowing the device to clamp the element on the shaft at any desired position during tightening.

Abstract: A clamping assembly for adjusting the relative spacing between the finger nozzles and the blades of a turbine wheel in turbine assembly which also enhances the distribution of high pressure steam loads between the steam chest and turbine casings of the assembly. The clamping assembly includes a plurality of adjustable clamps secured about the periphery of the casings. Each of the clamps includes a first wedge key on the periphery of the turbine casing, and a second wedge key secured to the steam chest casing by an adjustable fastener. This arrangement enables a workman to adjust the relative positions of the casings to position the finger nozzles relative to the blades by adjusting the fasteners securing the second keys to the steam chest casing.

Abstract: A steering column comprises inner and outer hexagonal-shaped shafts (12, 16), the inner shaft (12) being disposed within a bore (14) of the outer shaft (16). A mechanism for eliminating lost motion or "lash" between the two shafts comprises a plurality of slots (20) located in the outer shaft (16), the slots being circumferentially offset relative to one another. Wedges (22, 23) are located in respective slots (20) and abut corresponding polygonal surfaces of the inner shaft (12), with a collar (28) telescoped over the inner and outer shafts and having inclined ramps (30) at the interior thereof in alignment with respective wedges (22, 23) and slots (20), the ramps loading and causing inward movement of the wedges against the surfaces of the inner shaft (12) upon axial movement of the collar (28) relative to the outer shaft (16).

Abstract: The present invention relates to an arrangement for and method of retaining a compressor check valve assembly in a cylinder. Each one of a plurality of wedge segments includes an inner surface, an outer surface, and a tapered hole which passes through the wedge segment between the outer surface and a portion of the inner surface. A bolt passes through the tapered hole in the wedge segment and is received in a threaded bore means within the compressor check valve assembly. With this arrangement, the bolt may be used to draw the wedge segment between the check valve assembly and the interior surface of the cylinder so as to frictionally lock said valve assembly within the cylinder.

Abstract: A column and a plurality of support members having radially extending arm and/or foot portions, having an inner end portion shaped as a sector of a cylinder with an axial Morse tapered hole, and adapted to be received in the inside of the hollow end portion of the column. A bolt is screwed in an axial threaded hole of a Morse tapered body made of metal, and with its head resting on the upper ends of said sector-like portions of the arm or foot members or on the lower ends of the sector-like portions of the foot members. The body is presented from rotary movement with respect to the arm or foot members and is permitted mutual axial movement with respect thereto to pressure the supports against the column.

Abstract: A rope widening apparatus for use with tubular interlocking stranded rope comprising a rear tapered portion located on a generally football shaped insert to be placed within the strand groups of said rope, such that a force tending to draw the rope from the narrow to the large part of the taper will cause the strand groups to squeeze around the taper, and means to maintain the insert generally centrally disposed within the strand groups, and means to transfer the pulling force on the rope from the rear tapered portion to a desired object.

Abstract: A support for electric cables, in instances where the configuration of the distribution system is not fixed, comprises a pair of cable-clamping members whose outer surfaces form wedges guided by a pair of converging flanges. The inner surfaces of these members clamp the point or region of a cable that is to be held fixed in space. A pair of outer clamping members surround the above flanges. Coupling formations ensure that all parts of the structure always stay in their proper relative positions, allowing but a widening or a narrowing of the cable-receiving cavity. The flanges have projections or abutments which enter into lateral elongated recesses of the cable-clamping members and thus limit the possible minimum and maximum spacing of the latter, which depends upon the size of the electric cable that is to be supported.

Abstract: A multiple part tapered collar for use in a wedge anchoring system for a tendon in a structural concrete member usually consists of three coextensive elongated parts combined to form an axially extending annular component. The inner surface of the collar bears against the surface of the tendon, for instance, a wire, rod or the like, and its outer surface contacts the surface of a frusto-conical bore in an anchoring member. A groove is formed along the axial length of the outer surface of at least one of the parts of the collar for passing neat cement or a similar substance for enclosing the tendon. As a result, openings through the anchoring member, which are expensive to form and tend to clog, are unnecessary.

Abstract: A bushing for connecting a tool head with a tapered eye to a fiberglass tool handle. The bushing, formed in two sections, is mounted around and over a tongue on the distal end of the handle and is configured externally to be wedged by driving the bushing and handle in proximal direction to the eye of the tool head. Complementary double tapers on the tongue and the corresponding interior surface of the bushing are pressed into engagement when the bushing is driven into place in the tool head. The tapers on the tongue hold the bushing longitudinally in place on the handle. Spacers having the double tapered shape and/or flexible shims are provided for expanding the bushing to adapt it to fit larger eyes and to accommodate manufacturing tolerances of the tool eye hole. The cross sections of the eye and bushing are ovate with the major axis of such oval shape perpendicular to a striking face on said head.

Abstract: An anchor for use in the post-tensioning of prestressed concrete, including an anchor case having a longitudinally tapering outer wall surface and a tapered longitudinal bore for receiving a chuck comprising wedge segments which are in gripping engagement with a tendon passing therebetween. The anchor case and chuck are approximately the same length, and the anchor case is cold forged with the top end thereof folded inwardly to effect greater thickness at that point, which structure, in combination with a dome-shape thrust plate extending outwardly from the outer periphery of the anchor case proximate the folded portion thereof, contains the hoop forces exerted on the anchor case by the chuck.

Abstract: A mounting device (21,22,23) for anchoring a machine element (11) coaxially on a rotarty shaft (12). The device fits between the machine element and the shaft and is effective to position the element at any desired position longitudinally of the shaft and at any angular position circumferentially of the shaft. The device has similarly tapered inner (21) and outer (22) segmented sleeves, so that relative axial displacement of the sleeves effects radial expansion and contraction of the combined elements. At one end (29) the inner sleeve cooperates with a nut (23) to effect the axial displacement of the sleeves. The outer sleeve has separate segments (36) coupled with said nut to permit limited pivotal movement of the segments. In another embodiment (FIG. 6), the sleeves (121,122) are constructed to avoid relative rotation between the sleeves by a locking portion (146). In a third embodiment (FIG.

Abstract: A rope clamping device having two opposing clamping elements with teeth which are mounted above a bearing surface for varying the distance therebetween to allow a rope to be inserted and removed it is configured so that the distance therebetween is reducible in response to a tensile force applied to the rope to press the clamping elements thereagainst. The clamping elements comprise rollers mounted with their axes of rotation subtending an acute angle therebetween. The rollers are mounted for free rotational movement around their axes and for longitudinal displacement therealong to alter the distance therebetween.

Abstract: A plate-like element for insertion in a bore or recess to provide a fixing or bearing surface for a shaft or a shaft-like portion of an element includes a laterally centered section having the configuration of a short longitudinally oriented section of a cylindrical wall structure. This laterally centered section, which is correspondingly bowed, has wing-like plate portions at its remote lateral extremities which are co-planar. The remote lateral extremities of the wing-like portions are thinned at their leading edges, having regard for the direction of application of the plate-like element in use. The bowed portion is distinguished at its outer convex surface by an elongated, laterally centered, projection having essentially parallel sides the outermost surface portion of which is flatly arcuate in transverse cross-section and the leading end of which is also arcuate in configuration.

Abstract: An adjustable wheel assembly which facilitates the positioning of a wheel on an axle. The wheel assembly includes an elongated axle having a rack and a keyway, a wheel hub, and two pairs of arc-shaped wedges positioned between the axle and the wheel hub. Two of the four arc-shaped wedges are inserted into a tapered bore on one side of the wheel hub and the remaining two wedges are inserted into a second tapered bore on the opposite side of the wheel hub. Each of the four arc-shaped wedges further contains a radial flange with bolt holes therethrough so that each wedge can be bolted to the wheel hub. In addition, one of the wedges contains a radial opening housing pinion gear which meshes with the rack on the axle so as to axially move the wheel hub along the axle. The wheel assembly also contains a pair of jackscrews which are used to force two of the oppositely aligned wedges axially apart thereby allowing the wheel hub to be released from the axle.

Abstract: A torque limiter includes a rotational driving member and a driven member aligned along the common axis. A plurality of axially extended arcuate recesses are formed on the outer periphery of an interlocking ferrule fitted over a rotational driving member, and also a plurality of radially extended grooves, matched with the arcuate recesses of the interlocking ferrule, are formed on the inner periphery of an interlocking ferrule fitted over a driven member opposed to the driving member. In each of the radial grooves, there is fitted a torque-transmitting steel ball in such a manner that it can only move radially and rotate about its own axis while it is confined in motion in the revolving and axial directions. As long as they transmit torque less than a preset critical level, these balls are biased diametrally inward by an elastic pressure means so that the rotational driving member and the driven member are integrally driven together.

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: There is disclosed a temporary structure for use in exhibition stands and the like, comprising a framework comprising rectangular frame units each comprising two parallel vertical tubes and two horizontal spars, each in the form of an H with a much elongated cross member and much shortened uprights each of which provides two plugs, respectively above and below the cross member, two said plugs of each said horizontal spar being engaged in respective sockets afforded by the ends of respective ones of the two vertical tubes of the respective frame unit.In an extended structure each horizontal spar may form the lower spar of one such rectangular frame unit and the upper spar of an adjoining lower frame unit. Spring collets may be fitted around the plugs and within the sockets in which the plugs are inserted the colletts having cutting edges to score the socket walls, and having internal projections fitting in recesses in the plugs whereby a firm non-rotatable connection can be obtained.

Abstract: The invention relates to a device for securing an expandable hub in a hole, particularly, but not exclusively, the hub of a cable drum wheel in the center hole in the side of a cable drum, the hub having projecting in an axial direction a part which is intended to be inserted into said hole and expanded there to bear against the walls of the hole. The projecting part consists of a number of radially movable tightening jaws, which are capable of being actuated by a bracing block. This bracing block has a number of slots corresponding to the number of jaws, said slots having an inclined guide surface and this guide surface acts upon a corresponding guide surface on one end of the interacting jaw in conjunction with the radial displacement of the jaw when the block is operated, both the jaws and the block remaining unrotatable when operated.

Abstract: A self-locking adjustable support device comprising two telescopically interfitting members, a housing and a means for connecting the housing to one of the telescopically interfitting members in a manner permitting the housing to be adjusted in position longitudinally relative to one member. The housing is formed with a portion having an internal frusto-conical surface arranged to receive a plurality of locking elements which can be jammed between the frusto-conical surface and the outer surface of the said one member to inhibit movement of said other member in one direction longitudinally relative to said one member. The connecting means is a screwthreaded member which permits rotation of the housing relative to one member to afford fine adjustment of the overall length of the support device.

Abstract: A dual wheel and axle assembly having a wedge lock hub and axle assembly with an auxiliary clamp to augment the grip of the hub on the drive axle. A drive is provided to force bushing segments between the wheel hub and the drive axle to firmly lock the wheel hub and axle together. One of the bushing segments has an extension which extends axially along the drive shaft and carries a clamp in the form of at least one U-bolt having curvature mating that of the peripheral surface of the drive axle. The U-bolt is firmly clamped against a portion of the drive axle while the extension of the bushing segment which has an integral key firmly seats in a key slot of the drive axle to augment the grip of the wheel hub on the drive axle to accommodate additional torque produced by adding dual wheels to a conventional single wheel drive on the tractor.

Abstract: A plate segment for insertion in a hole, cavity or recess to position and/or lock a shaft-like portion of an object within and/or with reference to its bounding wall structure has preferred embodiments comprising plate segments formed of sheet metal in a stamping operation including tooth-like projections. Depending upon the embodiment the tooth-like projections may extend from either or both faces of the plate segments and/or its lateral extremities. The tooth-like projections are formed to provide teeth portions of which are skewed to facilitate the application and anchoring of the segment. In a particularly preferred configuration the plate segment comprises a leading end, a trailing end and side edge portions, the roots of which side edge portions are generally parallel and bound a main body portion of the plate segment which is curved on a uniform radius, in a lateral sense, to provide that the respectively remote faces thereof are formed to resemble a longitudinal portion of a cylindrical surface.

Abstract: There is disclosed a ferrule which is made of plastic material and is initially molded in one piece as a ferrule blank consisting of a thin-walled circular cylindrical shell or sleeve, a radially inwardly-directed transverse annular flange at the inner end of the sleeve, and a part which initially extends further axially inwardly from the flange, the said part having a plurality of axially extending fingers formed by straight-walled axial slots. The axially outer ends of the fingers are joined at their roots to the outer edge of the above-mentioned annular flange. The radially outer edge of such flange is joined to the axially inner end of the sleeve by a very narrow frangible annular flange. The fingers as initially molded diverge in an axially inwardly direction from their roots. Each of the fingers adjacent its inner end is provided with a peripheral groove which terminates at its inner end in a radially outwardly projecting lip.

Abstract: A mounting device for anchoring a machine element coaxially on a rotary shaft. The device fits between the interior cylindrical bore of the machine element and the internal cylindrical surface of the shaft and is effective to position the element at any desired position longitudinally of the shaft and at any angular position circumferentially of the shaft. The device has inner and outer segmented sleeves, the mating surfaces of which are similarly tapered so that relative axial displacement of the sleeves effects expansion and contraction of the interior bore and external surface of the combined elements. At one end the inner sleeve is externally threaded to cooperate with an internally threaded nut, such that rotation of the nut on the threaded portion of the inner sleeve effects the relative axial displacement of the segmented inner and outer sleeves.

Abstract: A shear pin assembly in a shaft coupling is disclosed in which an elongated, circular cylindrical shear pin having a central groove is held at its ends in split, tapered bushings received in tapered outer bushings press-fitted into bores in flanges of the two coupling halves. A loading bolt is threaded in each end of the shear pin and a head of the bolt bears against a loading plate which in turn is seated against the split inner bushing to force the inner bushing into place to rigidly grip the ends of the shear pin.

Abstract: Apparatus for pulverizing coal including a bowl and a cooperating roller between which members the coal is pulverized. The grinding surface of the roller is made up of a removable sleeve which is securely held on the journal bearing housing by means of wedge lock rings located at each end of the sleeve. These wedge lock rings, along with the roller, can be easily assembled, and provide positive locking of the removable sleeve onto the journal bearing housing, even if there are slight irregularities on the tapered surfaces of the sleeve.

Abstract: An apparatus for the releasable, force-locking connection of two telescopically arranged tubes, especially for clamping the steering housing tube in the steering fork tube of a bicycle or the like, comprising an expanding cone axially displaceable within the tube defining an inner tube by means of a threaded spindle. In order to avoid, during clamping, deformation of the inner tube and thus frictional connection between both tubes along only a circular engagement line at the lower end of the inner tube and to eliminate the effect of the unavoidable play between the outer diameter of the inner tube and the inner diameter of the outer tube, the outer surface of the expanding cone bears against wedges. The latter are each arranged in a respective guide slot formed at the inner tube, extending parallel to the lengthwise axis of the tubes and having a closed contour.

Abstract: An expansion anchor assembly having a segmented expansion shell containing two or more sections that are joined in assembly at the base of the shell. The base sections are interlocked along abutting radially extended side walls. An end cap is passed over the bottom of the base and securely locked to each section to close the assembly and hold the base immobile as the leaves of the shell are expanded outwardly.

Abstract: An earth boring assembly is provided with a hammer member at its leading end for impacting through an earth formation to form a boring therein. An expander cone is attached rearwardly of the hammer to expand the boring which has been formed by the hammer and drag pipes are connected to follow the hammer into the boring. Clamping means interposed between the expander cone and the drag pipe operate to automatically effect frictional locking engagement between the hammer and the drag pipe when the expander cone and the drag pipe are moved toward each other and to automatically release the frictional engagement when the members are moved away from each other. The clamping means may specifically comprise an annular slotted ring having wedge-shaped outer surfaces by means of which the ring is caused to become clamped and released about the hammer.

Abstract: For fixing metal sheaths on glass fiber reinforced plastic rods, which rods are used, for example, in composite insulators: the sheath is in a number of sections in a longitudinal array; there is an abutment inside the sheath at each sheath section, there is a shoulder piece on the outside of the rod inside each sheath section; the abutment in a sheath section is at one longitudinal side of the respective shoulder piece in that sheath section; elastic and compliant buffer means, such as springs, or the like, are placed between the abutment and its shoulder piece; the compliance of the buffer means increases toward one end of the arrangement to compensate for the different rates of expansion of the sheath and the rod; other embodiments all have appropriate buffer means in each sheath section, which buffer means increase in compliance moving toward the end of the sheath through which the rod exits.

Abstract: A cable clamp includes a box-like housing with opposite sidewalls, an open top and opposite end openings. A clamping mechanism within the housing includes a pair of laterally and longitudinally movable, laterally spaced inner clamping blocks with replaceable wear plates on their inner faces defining a cable passage therebetween so that a cable can pass freely longitudinally through the housing. A pair of outer wedging blocks back up the inner blocks and are laterally but not longitudinally movable within the housing. The outer blocks are spaced inwardly from the sidewalls of the housing to define wedging spaces. Longitudinally double-tapered outer faces of the inner blocks mate with complementary inner faces of the outer blocks. The outer faces of the outer blocks are vertically tapered to receive correspondingly tapered wedging surfaces of activating wedges movable vertically within the wedging spaces to drive the outer and inner blocks laterally toward the cable, causing the wear plates to grip it.

Abstract: A tie rod which is adapted to connect two constructional components of which at least at one end needs no modification of the wire or rod constituents the component of which has at least two conical members which can be associated with a member having an external thread which can pass over the conical members and cause them to lock on the rod and to enable pressure to be impressed thereon.

Abstract: A raise drill for enlarging a pilot hole into a larger diameter hole by disintegrating the earth formations surrounding the pilot hole is disclosed. The raise drill includes a main bit body having a plurality of cutters mounted thereon. The bit body is detachably secured to the drive stem to permit removal and replacement of the stem. The removable drive stem allows the raise bit to be transported through small drifts and helps extend the useful life of the raise bit. The drive stem extends through a central opening in the raise bit body and includes an upwardly facing shoulder for engaging the margin of the bit body about the opening. The drive stem further includes a plurality of tapered flat surfaces located about the periphery of the bottom end thereof. A plurality of bolted wedge blocks, attachable to the main bit body are provided to engage the tapered flat surfaces of the drive stem in order to urge the shoulder of the drive stem into locking engagement with the main bit body.

Abstract: A releasable stabilizer is provided for adjustable positioning along a drill string. The stabilizer includes a body positioned around the drill string with a threaded section on each end; a clamping wedge used at each end with an inwardly facing surface to grip the drill string; and a threaded end cap for forcing the wedge against the drill string by screwing the end cap onto the body to clamp the assembly onto the drill string.