Abstract: A coupling for joining sucker rods in an oil well pump and the like, having a metal sleeve with an axially threaded bore and an exterior coating on the sleeve producing a cylindrical coupling, with the coating being an abrasive resistant thermoplastic hydrourethane polymer.

Abstract: The present invention envisions a concentric structural combination of elements, consisting of an elongate core component, which is terminated at each end on the internal surface of a chambered coupling, and a elongate sheath component which consists of an interlaced configuration of assemblies of non-metallic filamentary elements embedded in a polymer matrix, the sheath component being bonded at each end to the external surface of the coupling, the load-elongation characteristics of the core and sheath components being chosen so as to ensure that both components share substantially in the load-bearing under the working load conditions, with at least 50% of the load being borne by the aggregate of the non-metallic elements, and the sheath and matrix being disposed so as to substantially cover and protect the core and coupling components.

Abstract: A wrought aluminum alloy well pump sucker rod is formed using a cylindrical rod section and separately fabricated coupling end portions which are friction welded to the cylindrical rod section at friction welding speeds and forging pressures sufficient to produce an excess amount of radially displaced material or flash in the weld zone. The increased cross-sectional area of the rod formed by the displaced material results in lower unit stress in the transition zone between the cylindrical rod section and the enlarged diameter coupling portions.

Abstract: A sucker rod assembly useful in oil wells and the like is provided. In making the assembly, a longitudinally extending generally central cavity in a sucker rod end casing is coated with a mold release agent and the cavity interior surface includes longitudinally spaced inwardly directed annular wedges disposed transversely of the casing to provide a wave-like form. A plurality of separate rigid inserts are inserted longitudinally into the cavity and extend substantially the length of the plurality of wedges, collectively mating with the interior surface of the casing, and defining a central longitudinal space. An adhesive such as epoxy resin is poured into the central space and then a sucker rod end is inserted in that space.

Abstract: Apparatus for and a method of repairing or protecting an exhaust box or pipe of a motor vehicle are described. The apparatus comprises a flexible sheet having an outer stainless steel layer and an inner sealing layer. The flexible sheet is wrapped around the area of the exhaust box (or pipe) to be reinforced or repaired and secured in place with a Jubilee clip fastening arrangement attached to receiving members provided on the outer layer so that a seal is provided between the inner layer and the area to be protected or repaired.

Abstract: A locking pipe sub is disclosed including a threaded pin connection for engaging, for example, a pipe stuck in a well bore. The threads on the pin are formed in two sections which are adapted to align upon initial make-up of the sub to the stuck pipe, but to misalign, both axially and radially, when reverse torque is applied to the sub. The result is to create axial and radial forces between the threads of the sub and the threads of the stuck pipe which positively lock the sub against disconnection from the pipe except with the use of a releasing tool.

Abstract: The invention disclosed herein includes a reducer coupling, a positioner tool for connecting the coupling to a conduit section, and a nut for securing the positioner tool to the coupling. The reducer coupling is useful in various operations, such as some oil field operations in which it is used to connect a smaller conduit (delivery line) into a larger conduit (production casing). In practice, the positioner tool is secured to the reducer coupling and the coupling is moved into its hook-up position above the production casing, by attaching a rig to the positioner tool. The coupling can then be threaded into the casing by turning the positioner tool with a wrench, or similar tool.

Abstract: An adjustable pass-through joint comprising a main joint body having a first bore longitudinally therethrough, a second bore orthogonally intersecting said first bore, a third bore intersecting said second bore and a fourth bore intersecting said second bore, a cylindrical locking member rotatably mounted within said second bore and having a partially-threaded opening in line with said first bore, a threaded rod slideably installed within said joint body, and a shaft insertable within said third bore which, by wedging itself between one side of said third bore and a cut-away surface on said locking member, retains said cylindrical member in an angular position where the threads of said partially-threaded opening are locked with the threads of said rod, preventing longitudinal movement of said rod within said joint body.

Abstract: Oppositely facing surfaces have grooves in one of the surfaces and low coefficient of friction inserts in the grooves. The inserts have a thickness greater than the depth of the grooves so as to project from the grooves when seated therein for bearing against a facing surface and maintaining the two surfaces in spaced apart relation. Such inserts provide a reduced friction relation between the two surfaces whereby the two surfaces can be readily rotated between a working condition having a thrust load therebetween and a loosened non-working condition. Preferably, two or more of the grooves and inserts are provided, the inserts being held in the grooves by distorted portions in the walls of the grooves.

Abstract: A stub post is connected between the roof and ceiling of a railway car. A stanchion is fixed to the stub post and slip fitted into a cup secured to the top of an aisle seat. An adapter unit attached to the stub post is provided to receive the top end of the stanchion and permit it to be pivoted in position to drop into the cup member before it is fixed in place to the adapter.

Abstract: A process of manufacturing at least a nut of a ball-type feed screw and nut system separately from its fastening element and then joining the nut to its fastening element by a connector so as to produce an assembly designed for the specific requirement of each use of the ball-type feed screw and nut system. The invention is used, in particular, in drive devices for machine tools.

Abstract: A compensation device for deep-well drilling tools with a transversely divided outer pipe, the pipe members (1 and 2) of which can be rigidly connected to one another by a screw thread (8) and comprise adjacent end faces (5 and 6) as stop faces which approach one another when the pipe members are screwed together and move apart from one another during the unscrewing, comprises a spacing member (3) which can be inserted radially, from the outside, between the end faces. The screw thread (8) has a length of engagement which secures the firm connection between the pipe members within the whole preset compensating range.

Abstract: A sucker rod used in pumping liquids from subterranean oil or water wells is formed of plastic material having pre-stressed reinforcing fiber strands or roving therein, and a method of manufacturing same.

Abstract: The invention contemplates use of a bayonet mount for microscope objectives, instead of the customary threaded mounting of such objectives. The bayonet mount is characterized by the objective (1) having a centering cone (3) which engages and precisely centers in a conical opening (10) in the turret of the microscope. The structure not only permits rapid changing of the objective, but the thus-mounted objective always assumes the same accurately centered angular position with respect to the microscope housing.Each objective can therefore carry exposed coded indicia, containing technical data concerning the objective, and the coding may be read by a reading device which is fixed with respect to the microscope housing. The code which is read for the objective indexed into working position may be used for aperture control in the microscope.

Abstract: A sucker rod assembly is disclosed for use in oil well pumping apparatus. The assembly is constructed of a rod and a steel rod-end fitting. A unitary threaded head at the end of the rod is screwed into a socket in the rod-end fitting. The threaded head is of enlarged diameter and a tapered shoulder is provided at the juncture of the rod in the head. The fitting has a cylindrical socket with a threaded portion at the bottom and an unthreaded flange adjacent the outer end. After the head is screwed into the socket the flange is extruded into surface engagement with the tapered shoulder to provide a mechanical interlock between the rod and the fitting.

Abstract: A rod assembly comprising a core component and a sheath component and having an elongate cross-section, the sheath component consisting of an anisotropic assembly of non-metallic filamentary elements embedded in a polymeric matrix whereby the bending stiffness for deformations about an axis parallel to the major axis of the rod assembly is less than the bending stiffness of the same core and sheath components in a radially symmetrical configuration, and in which the core and sheath components have load-elongation characteristics so that the ratio of the strain to the strain-to-break in the sheath is essentially equal to the ratio of the strain to the strain-to-break in the core throughout the working load range.

Abstract: Sections of hollow tubular pipe are joined together by one or more differentially threaded, axially mounted screw which threadedly engages internal radial flanges at the end portions of the adjacent pipes, an extension socket rotates the internal screw or screws.

Abstract: A stronger, lighter sucker rod formed from cold-drawn medium to high carbon steel composed of three basic components which provide versatility in forming the sucker rod. A sucker rod is disclosed which is formed of machined, cold-drawn steel elements. The construction of the sucker rod significantly increases the resistance of the rod to metal fatigue and yields a rod which is smaller in diameter and lighter in weight than an equivalent strength rod made from hot rolled or heat treated steel metal stock.

Abstract: Disclosed is a pipe coupling for coupling a first section of pipe with a second section of pipe. A threaded sleeve comprised of two identical semi-circular connector members is received in an annular recess formed in the exterior surface of the first pipe section. The second pipe section is secured to the first pipe section by means of an internally threaded female coupling nut. Piloting means are provided on the connector members and first pipe section to ensure proper orientation of the connector members with respect to each other.

Abstract: A hand tool of the type having a closed loop blade. The two ends of the blade overlap each other and are spot welded together. A rectangular shaped hole is formed through the base of the blade. The handle of the tool is formed of two members. The forward member of the handle has a hole formed therethrough with the forward end of the hole being rectangular in shape. The rear end of the handle has a threaded hole formed into the forward end thereof. A carriage bolt is used to secure the two members of the handle together and the blade to the forward member of the handle such that the blade cannot turn relative to the handle.

Abstract: A post for supporting upper and lower temporary guard-rail chains around the periphery of a concrete floor slab on a building under construction. The post has two vertically spaced pairs of hooks to which respective chains may be attached so as to make it virtually impossible to dislodge either chain accidentally. The post has a screw-threaded rod for insertion in a wire nut embedded in the floor slab. A clamping nut on this rod is adjustable to clamp the post in a position in which the hooks are on the side of the post away from the periphery of the floor slab.

Abstract: An improved intermediate weight member to be put in a drill string between the collars and the drill pipe which has a spiraled outer surface, and which is so configured as to provide a uniform bending moment of inertia over its length including the slip area.

Abstract: A safety shear tool for series connection into a string of sucker rod, especially a fiberglass sucker rod, which includes two coacting members connected together to form a swivel means, and to also form a shear means, so that the tool acts as a weak link as well as a swivel means. The tool is series connected into the sucker rod string and preferably located near the bottomhole pump. When the pump malfunctions and causes the tension in the sucker rod string to increase to a value less than but close to the designed breaking strength of the sucker rod string, the members of the tool are released, one from the other, thereby parting the sucker rod at the tool rather than parting the sucker rod structure itself. The tool is easily reassembled for subsequent use downhole in the above described manner. The set tension at which the tool parts the rod from the pump is easily changed.

Abstract: A planer of the type adapted to be mounted on and driven by a multipurpose woodworking tool includes a housing, a rotating blade member, and a table mounted beneath the blade member and vertically displaceable relative thereto by a plurality of jack screws. The jack screws carry connector nuts having outer members attached to the table which allow relative sideward movement between the table and screws to minimize table binding. A chain drive engages the jack screws and includes an idler sprocket which can be adjusted to allow adjustment of an individual jack screw to level the table. First and second roller assemblies upstream and downstream of the blade member are rotatably mounted on the housing and are vertically displaceable; the roller assemblies are driven by a single, fixed drive sprocket which is capable of rotating the rollers throughout a range of vertical displacement.

Abstract: An annular composite washer assembly provides a "soft" mount for a tool element subassembly mounted on the threaded output spindle of a portable grinder or other power tool. The composite washer includes a pair of flat annular washers and a molded body therebetween. The body has integrally-molded inner and outer annular bands joined integrally with the inner and outer diameters of the respective washers. A first pair of blind axial pockets, diametrically opposed to one another, extends through the first washer and the body and terminates at the second washer. A second pair of blind axial pockets, diametrically opposed to one another and shifted circumferentially with respect to the first pair of blind axial pockets (preferably by ninety degrees) extends through the second washer, through the body, and terminates at the first washer.

Abstract: A cable pulling eye assembly comprises a spike (16) having an auger thread (18), a coaxially mounted shell (36) and an eye (31) with a threaded opening (34), which is mounted on a threaded rear section of the spike. The eye is rotated by a power tool to advance the auger into a bundle of wires (11) of a sheathed cable (10). The shell is subsequently crimped to further force the wires into the flute defined by the auger thread. A pulling steel cable is attached to the eye to draw the cable between telephone poles or through an underground conduit.

Abstract: A sucker rod is composed of three initially separate parts comprising a relatively long body member and duplicate relatively short pin members. Upsetting steps are performed on the relatively long body member, whereas only machining steps are employed in making the pin members. One end of each pin member is inertia welded to each end of the body member after the various ends have been cut or ground to provide relatively smooth surfaces.

Abstract: A sucker rod having improved coupling capability for joining successive lengths of sucker rods in a string has a pin end coupler on one end and a box end coupler on the opposite end. The string is formed by inserting the pin end of one rod directly into the box end of the successive rod without the need of an intermediate cylindrical sleeve. A method of refurbishing the threaded end portions of used sucker rods involves cutting off the old threaded end portions and rethreading the rod ends. An internally threaded pin end coupler is then secured on one end of the rethreaded rod. An internally threaded box end coupler is threadedly secured on the opposite end of the rethreaded rod.

Abstract: A golf club adapted for assembly/dissassembly includes a cylindrical coupler with a lower part inserted permanently in the lower hollow shaft and which has a shoulder abutting the top of the lower shaft. The upper part of the coupler has internal threading cooperating with external threads on a solid shaft inserted in the upper hollow shaft. A projection on the upper part of the coupler cooperates with a cut-out in the upper hollow shaft to provide alignment of the grip and head of the club when the solid shaft is screwed into the coupler by using a knob or shoulder on the upper end of the solid shaft that tightens against the grip.

Abstract: An engine piston composed of a head and a body separately formed from the head. The head is of ceramic material and the body is light metal or light alloy. The head and the body are connected against axial movement by interengaging means provided on the head and body by rotation of the head relative to the body, and the head and body are then fixed against relative rotation by an anti-turning device, this arrangement preventing development of excessive thermal stress. The piston is of reduced weight, can be mass-produced, and reduces fuel consumption.

Abstract: An internal locking device for telescoping tubular members and method of forming the same. The device includes an inner telescoping member, having an end formed with an annular cam groove of a selected configuration, and a cam element cooperating with said cam groove and outwardly extendable to form a releaseable lock of an outer telescoping tubular member with the inner member when the members are twisted one with the other.

Abstract: A sucker rod assembly is disclosed for use in oil well pumping apparatus. The assembly comprises a rod with roll-formed threads on the end thereof and a rod-end fitting with a threaded socket for receiving the threaded rod. An unthreaded portion on the outer end of the socket is extruded into surface engagement with the unthreaded surface of the rod to seal and mechanically interlock the rod and fitting.

Abstract: A coupling is provided in which a coupling member and coupling sleeve of a rotary coupling for coupling a drive transmission to a rolling mill stand input shaft have mating taper threads which provide torsional rigidity and facilitate quick engagement and release. Engagement and release are effected by slowly turning the coupling half by means of the drive transmission while a brake device engages dogs on the coupling half to prevent the latter rotating. The coupling sleeve is flexibly attached to the flange by sheet metal laminate compensating elements but mobility of the sleeve is restricted by a support element on a shaft extension.

Abstract: Residual favorable stresses are induced in a zone of stress concentration in a coupling and connection joint mechanism of a drill collar or drilling tool, for example. The residual favorable stress is created by tensily stressing the material within elastic limits, relieving the stress in the zone by heating the material therein into a nonstressed plastic or liquid state, and releasing the tensile stress maintained in an area adjacent the zone. The residual force of elasticity in the area adjacent the zone applies the favorable residual stress in the zone. Preferably, the favorable residual stress is a compressive stress to resist fatigue failures from tension-induced cracks. The extent and depth of penetration of the favorable residual stress in the zone is controlled and is substantially greater than that available from mechanical cold-working surface-hardening techniques.

Abstract: The invention relates to a quickly detachable self locking coupling which is simpler and cheaper to produce than other self locking couplings such as bayonet couplings and couplings using separate spring loaded ratchet devices or interference fits. The coupling comprises male and female screw threaded bodies, the thread on the male body having a step along its length, and the thread inside the female body consisting of only one turn of 360 degrees with flat ends. The parts are screwed together until the end of the thread in the female body rides over the step in the thread of the male body. A rubber ring then urges the threads together so that inadvertent unscrewing of the bodies is inhibited.

Abstract: There is described a device for mounting and removing a cutter at the end of the cutter shaft from a hydraulic or suction dredge, whereby the cutter boss is provided with an inner screw-thread and the cutter shaft with an outer screw-thread. The device is comprised of two concentric rings those surfaces of which facing one another are provided with teeth fitting into one another, whereby the slanting of said teeth is opposite to the angle of said screw-threads, and means are provided to lock both rings during the screwing of the cutter on the shaft thereof, in such a position relative to one another where said rings have so rotated relative to one another that the joint thickness thereof is increased as compared with the joint thickness of the toothed rings when the teeth have completely rotated into one another.

Abstract: A piston rod to crosshead mounting for use in reciprocating compressors having a crosshead nut bearing a plurality of diametrically opposed threaded jackscrews each having a bearing pad cooperating with the adjacent crosshead mounting boss face. The bearing pads are swivelably mounted to the jackscrew to permit the bearing pad to adjust to any out-of-squareness of the crosshead mounting surface. The construction permits the bearing pads to operate independently of each other while applying full preload to the piston rod.

Abstract: A drill element in the form of a drill rod, a sleeve for coupling together two drill rods or a drill bit; the drill element having a single start internal or external cylindrical screw thread by which it is intended to be coupled to a further drill element in the assembly of a drill string for percussion or rotary/percussion drilling.

Abstract: A locking arrangement for telescoping tubes including an outer elongated tube with a radially inwardly projecting lock seam longitudinally extending along the length of the tube, and an inner elongated tube telescopically being received within the outer tube. The inner tube includes at least one integral radially outwardly extending projection formed as a deformation of the wall of the inner tube. The projection is such as to be able to be arranged in a clearance fit relationship so as to permit axial sliding of the tubes relative to each other, and upon relative rotation of the tubes, to adjust the projection in an interference fit whereby the inner tube becomes eccentric with the outer tube and is jammed in a locked position within the outer tube.

Abstract: A connector assembly that may be used to so pivotally connect the adjoining end portions of an upper and lower string of sucker rod that are angularly disposed relative to one another within a tubing string of like angulation, that longitudinal forces may be exerted on the sucker rod strings to reciprocate the same without the sucker rod strings being subjected to an appreciable twisting stress. The connector assemblies may not only be used to connect angularly disposed strings of sucker rod at their junctions, but also to connect the lower end of the lowermost string of sucker rod to the piston rod of an elongate pump situated below the tubing string in which the sucker rods are disposed.

Abstract: The present invention pertains to a coupled sectional rod assembly of a type for use in an underground pipe installer device for, first, forming an underground hole between two given points and, second, installing a pipe or the like in the hole. Each end of the rod includes a reduced diameter screw threaded stud portion for reception in one end of a coupler having the same outside diameter as the rod section. Both ends of the coupler conventionally include an unthreaded lead-in end portion. Both screw threaded-end stud portions of each rod section of the present invention include a shoulder portion connecting between the screw threaded studs and the main rod section length.

Abstract: Compact, portable, light, easily assembled, dynamic, exercise equipment having a middle bar to which the first of ends of plural flexible springs are hooked and a footholder to which the other ends of such springs are connected; handle bars are separately and interchangeably attachable to the ends of the middle bar. The flexible springs are connected at one end totally within the length of the middle bar. The above mentioned springs form the only connection between the middle bar and the footholder.

Abstract: A coupling thread structure for percussion drill elements including a rod (10) having an external thread (14), and a sleeve (24) having an internal thread (26) with the threads, when the sleeve and rod are coupled, having abutting (16) and non-abutting (18) flanks and with the flanks being joined by bottom (22) and crest (20) portions, wherein the threads have at least two starts; the abutting flanks (16) are substantially straight along their whole abutting contact portions (CL) and form an angle of between 10.degree. and 25.degree., preferably 15.degree. to 20.degree., with the drill axis; the pitch angle of the threads is in the range 9.degree. to 20.degree., preferably 11.degree. to 16.degree.; the crest portions (20) are substantially straight and intersect the abutting flank (16) portions at a well defined edge (30); the non-abutting flanks (18) have a flank angle which is considerably greater than that of the abutting flanks (16); the flank angle of the non-abutting flanks (18) is in the range 50.

Abstract: An adjustable coupling structure for the support of lighting fixtures, pipe support racks, and the like utilizes an adjustable coupling device to couple two threaded support rods. The coupling device includes a clearance hole and a parallel threaded hole through a rigid body. The minor diameter of the threaded hole is tangent to the clearance hole thereby providing meshing of the threads of the two rods. Adjustment is provided by turning either of the threaded rods.

Abstract: An improved fastener assembly includes an externally threaded member or bolt having a thread convolution with a relatively long trailing flank surface and a relatively short leading flank surface. An internally threaded member or nut also has a thread convolution with a relatively long trailing flank surface and a relatively short leading flank surface. The nut is grooved to provide an expandable section. When the nut and bolt are tightened, the relatively long trailing flank surfaces of the thread convolutions cause the grooved portion of the nut to expand to completely fill a hole. The opposite end of the nut is contracted to clamp against a thread convolution on the bolt. In one embodiment of the invention, a relatively short leading flank surface of the bolt extends at an acute angle to the relatively short leading flank surface of the nut to provide clearance between the internal and external thread convolutions.

Abstract: A coupling device for container lashings comprises two tensioning members (1, 3; 11, 13) having coacting teeth (2, 12) and a clamping means (20) for keeping the members with the teeth (2, 12) in mesh. One flank of the teeth (2, 12) inclines at an angle (.alpha.) of between 95.degree. and 110.degree. to the tensional load direction (r) of the member. The other flank of the teeth inclines at an angle (.alpha.) of between 30.degree. and 50.degree. to the tensional load direction (r). The clamping means (20) is an eccentric clamping collar, surrounding the members (1, 11) in their toothed zone and in an open condition affording a clearance (s) between the top land planes of the elements (1, 11) in the same order of magnitude as the tooth depth (t) but in a closed condition the collar (20) maintains the teeth (2, 12) of the members in mesh. Each of the members have means (4, 14) against which a tensioning apparatus (30), e.g. a hydraulic tensioner can be applied.

Abstract: A sinker bar connectable to other sinker bars, sucker rods and the reciprocable operator of a down hole pump by use of conventional elevator and hoist connectors without the use of auxiliary devices such as pony sucker rods, the sinker bar having a reduced intermediate portion below the top portion thereof engageable by a conventional elevator connector and an external annular groove in the top portion constituting means engageable by a conventional hoist connector.

Abstract: A coupling for tubular scaffolding including a boss mounted on a standard by a pin or by welding and a wedge ring rotatably encircling and co-planar with the boss.Radial insets in the boss combine with the ring to form apertures in which pegs are located, the pegs being attached to the ends of ledgers and transoms. The inner face of the wedge ring has sloping wedge surfaces in the vicinity of the apertures which alter the radial dimension of the apertures. Thus, when a peg is located in an aperture the wedge ring can be rotated to wedge the peg firmly in the aperture.The problem existing prior to the invention was the difficulty of securing ledgers and transoms. This has to be done by screw couplings or by getting above the coupling in order to tighten it. The coupling of the invention can be operated from below, i.e. by a person standing on erected scaffolding.

Abstract: A locking device for two parts, mutually displaceable telescopically, e.g. a rod glidable in an outer tube, and including a washer with resilient serrations or teeth bent slopingly upwards out of the plane of the washer, which is retained in one part while its teeth engage the other part. An operating means is adapted for urging an annular lifting means into engagement with the teeth on actuation in one direction, so that the teeth are deflected out of engagement, allowing free movement between the parts, until they regain their engagement when the operating means is moved in the opposite direction.

Abstract: A pipe joint includes pin and box members having interengaged threads characterized as producing hoop tension in the pin member and hoop compression in the box members.