Abstract: An air operated dispense head for dispensing of hot melt and related adhesives is provided which utilizes a drop-in seal cartridge assembly in which a hardened needle is sealed using a pair of quad seals along with soft back up rings. Improved life is obtained from this combination of elements.

Abstract: A hose construction, coupling unit and system therefor and methods of making the same are provided, the hose construction comprising a flexible hose having opposed ends, a tubular member having opposed ends one end of which is carried by one of the ends of the hose and other end of which extends outboard of the one end of the hose, and an annular coupling unit rotatably carried on the other end of the tubular member outboard of the one end of the hose, the coupling unit having an externally threaded portion for threadedly connecting with an internally threaded coupling device, the coupling unit having an annular portion provided with a tool gripping external peripheral surface for rotating the coupling unit on the tubular member in order to threadedly interconnect the threaded portion with the coupling device, the annular portion being a part that is separate from the threaded portion so as to be adapted to be rotated relative thereto to tend to prevent unthreading of the threaded portion from the coupling de

Abstract: A pipe restraining mechanism for use in a pipe retainer gland to secure the gland on a pipe such as PVC pipe and ductile iron pipe including a housing forming a part of the retainer gland and having a pocket therein opening inside of the gland, a wedge operator member on the top wall of the housing, and a pipe gripping wedge in the housing pocket having inside teeth for engagement with the outer surface of a pipe and adapted to be initially mechanically pressed into a pipe surface by the operator member and thereafter fully engaged with the pipe surface responsive to hydraulic pressure in the pipe causing a wedging action with the operator member and thereafter a turning action between the wedge and a housing surface to drive the wedge teeth into the pipe surface and seat the wedge on the pipe surface.

Abstract: An expandable joiner is used to secure tubular frame members of a pickup truck box rack in end-to-end relationship. The joiner is adaped to be located in adjacent end sections of the tubular members. The joiner has a longitudinal channel separating a pair of jaws. The jaws have adjacent spaced surfaces providing the longitudinal channel. Each spaced surface has a plurality of longitudinal grooves therein. Screws threadably engage the jaws longitudinal grooves to expand the joiner to releasably couple the frame members in end-to-end relationship.

Abstract: A blast joint for use with a snubbing unit includes a casing around the protective rings and means for sealing around the bottom of the rings between the tubing and the casing.

Abstract: A threaded cylinder frame ending at a flange ring and extending in a semicylindrical half sleeve for attachment to another semicylindrical half sleeve. A Locknut with barbs secures and grounds the cylinder frame to the service box wall, and a janus flange ring prevents the connector from passing through the box wall and the pipe from passing through the connector to the box wiring. The length of the half sleeves accommodate random environment movement and retain the pipe within the conduit system. The removable half sleeve allows the pipe to be laid on the catchment area of the main half sleeve and a portal to be formed between the end of the pipe and the flange ring, permitting inspection and repair of wiring.

Abstract: Fitted coupling device, formed by two components, for connection to a flexible tube, having a female component and a male component on which said flexible tube is attached by thermal contraction of an external ring. The coupling device has an elastomer O-ring which is gradually compressed between two facing surfaces, one of which is essentially cylindrical and the other of which is a small-angle cone. The compression takes place during an axial manoeuver causing the rolling without sliding of said O-ring, which executes one or more complete turns on itself.

Abstract: The invention relates to a welded pipe joint comprising a sleeve (3) welded (5, 6) at each end thereof to the respective pipe (1, 2). The wall of the sleeve (3) at each pipe provided with a boring in which a nipple (11, 12) for oil is arranged. In connection with each nipple, a peripheral groove (15 16) is arranged to extend around the respective pipe (1, 2). Oil introduced through the nipples (11, 12) prevents pickling acid from entering clearances (9, 10) between the pipes (1, 2) and the sleeve (3), and impurities from gathering in gaps (7, 8) between the end faces of the pipes and a central shoulder (4) formed internally in the sleeve.

Abstract: A conduit coupling assembly for connecting the end portions of a pair of lengths of conduit in coaxial relationship. The end portions of the lengths have external threads of the same size. The coupling assembly includes an annular outer coupling member and an annular inner coupling member for reception by the outer coupling member. The outer coupling member has a first end including an internal screw thread sized for threading onto the end portion of one of the conduits. This outer member also includes a second end including an outer wall defining a cavity with the outer wall having at least one threaded aperture therethrough opening onto the cavity. The inner coupling member includes a first end and an internal screw thread sized for threading onto the end portion of the other of the conduits.

Abstract: The invention relates to a releasable coupling between a male element and a female element. The coupling comprises a split clamp ring that is ranged to be received in corresponding annular recesses in the male element and female element, whereby the ring shall have one wedge surface to engage with a support surface in one recess on the male element and another wedge surface obliquely, disposed from the first wedge surface to engage with a support surface in the other recess in the female element. By applying a circumferentially directed force to the end portions of the split ring, it will be possible to achieve a locking engagement between the ring and its matching recesses, thus assembling the male and female elements to each other.

Abstract: Pipe joint connections with set screws that have swivel-mounted feet. Such set screws when used with such connections flexibly and tenaciously retain pipe sections in the connections in the same manner that a toy "chinese puzzle" woven straw tube retains a person's fingers. The larger faces of such set screw feet allow the set screws to grip the pipe section with considerably less torque than that required by conventional set screws. Such connections form a flexible, strong coupling that maintains its holding power despite changes in pipe position and environmental factors such as temperature and pressure. Such connections are particularly well suited for joining polyvinyl chloride pipe sections to mechanical joint pipe fittings, valves and hydrants, although they are also extremely effective in joining conventional mechanical joint metal pipe sections to such attachments.

Abstract: A coupling (10) for hoses (11a and 11b) having a first and a second body section (12 and 13 respectively). Each body section (12, 13) has a bore thereof (14 and 15 respectively) such that the bores will accept hoses (11a and 11b, respectively). An engaging assembly (24) is provided to sealingly engage the body sections (12, 13) in juxtaposition. The engaging assembly (24) includes a series of sealing surface engagements between the first and second body sections (12, 13). Further, sealing engagements are made between the hoses (11a, 11b) and abutting surface (40, 42) of the first body section (12). A locking assembly is provided to securely and removably attach the two body sections (12, 13) together, and includes nut a (44) which threadably engages first body section (12) and abuttingly engages shoulder (46) of the second body section (13).

Abstract: The present invention is directed to an apparatus and method for assembling, aligning and securing a sealed connection. The apparatus and method of the present invention advantageously employ the mechanical leverage of a threaded connection, preferably square threads, to overcome the high O-ring seal friction associated with large diameter, high pressure O-ring seals. The disadvantages of threads are eliminated by the use of thread relief grooves adjacent and interior to the threads. The thread relief grooves must be of sufficient length and annular dimensions to accommodate the disengaged upset threads therein to permit free rotation. The combined length of threaded engagement must be sufficient to move the O-ring seal into sealing engagement to fully achieve the advantageous ease of assembly of the present invention. Further, this connection is unlikely to separate during use in that disengagement of the threads into the thread relief grooves prevents back off where high make up torque is not employed.

Abstract: A joint having no external protrusions consisting of the mating cylindrical nds of two tubular members joined by interlocking cogs on the male and female ends of the tubular members, and a pair of facing ramp surfaced rings disposed in the joint with one ring integral with or affixed immovably to the male end of one tubular member, the other ring rotatably disposed upon that same member within the joint so that when the movable ring is rotated by means of a spanner wrench or equivalent tool relative to the stationary ring, the juxtaposed ramp surfaces ride upon each other causing the movable ring to move axially relative to but in continuing contact with the stationary ring until contact with the female end of the other tubular member in the joint is established and the joint is thereby made rigid.

Abstract: The improved tubular joint of the present invention includes the tubular members each having a thickened portion near their adjoining ends which thickened portions have substantially the same stiffness as the thinner portions of the tubular members, an inner band positioned within the thickened ends of the tubular members and an outer band positioned around the thickened ends of the tubular members, said inner band having a plurality of capture plates with each having a threaded openings facing outwardly and registering with the openings of the bolt sleeves which extending through the outer band and the end of each of the tubular members, bolt shafts extending through said bolt sleeves in threaded engagement with said threaded openings in the capture plate and sealed within said bolt sleeves, locking nuts on the outer ends of said bolt shafts, means for sealing between the exterior of the inner band and the interior of each of the tubular members, means for testing the effectiveness of the seal between the in

Abstract: A well tool having a body with a plurality of sections which are joined together without welds or threads. The sections form telescoping interconnections with adjacent sections and each interconnection includes a male and female part with an outer end. The parts are telescopically joined and rotationally aligned and sealing means are positioned between each male and female part. A hole is drilled through the female part and into the male part between the ends and a removable plug is positioned in the hole for providing for the transfer of rotational and longitudinal forces. Aligned eccentrically positioned fluid passageways extend through each of the sections.

Abstract: A mechanical pipe joint comprising a substantially cylindrical body integrally formed with a plurality of pipe restraining members, and a plurality of pipe clamping members, each comprising at least one block slidably engaged with a pipe restraining member, a compressible gasket for graduating suddenly applied forces, and restraining bolts. The clamping system, acting to distribute the clamping forces on a large portion of the surface area of a pipe, simultaneously absorbs and graduates suddenly applied forces, preventing failure of the pipe point.

Abstract: A locking device or button for hollow stem auger couplings including an outer body section having an internal bore, a locking pin assembly mounted within the bore, and cooperating cam structure for moving the pin assembly a predetermined distance between locked and unlocked positions. Seal means at opposite ends of the bore keeps water and dirt out of the bore and protects the cam structure.

Abstract: An universal coupling is described which can be connected to the outlet of a variety of water faucets regardless of the design or cross-sectional shape of the faucet outlet. In one embodiment the universal coupling can be connected a smaller faucet outlet having a maximum outlet width of about 60% of the maximum outlet width of the largest faucet outlet to which the universal coupling can be connected. The capability of the universal coupling of this invention to be connected to such a large variety of faucet outlets regardless of the cross-sectional shape thereof enables, for example, the installer of water filters to kitchen faucets to stock just the universal coupling of this invention since it will fit most all faucets commonly found in kitchens.

Abstract: A pipe coupling wherein a composite housing surrounds the objects or parts to be coupled with one another. The housing confines two annular gripping members, one for each part and each having a trapeziform cross-sectional outline with two oppositely inclined legs flanking an annular web which can be biased toward the respective part by a set of screws mating with the housing. The radially innermost portions of the legs have teeth which penetrate into the material of the respective parts to hold the parts against axial movement relative to each other. Each gripping member can be received in a discrete groove which has a trapeziform cross-sectional outline and is bounded in part by two oppositely inclined flanks whose inclination with reference to the axis of the housing is more pronounced than the inclination of the legs on the gripping members. The teeth of the legs of the gripping members are immediately adjacent the respective flanks.

Abstract: A below ground meter box for a fluid meter includes a first sleeve for placement at the bottom of a pit in which the fluid meter is located, the first sleeve having apertures for receiving fluid conduits for the fluid meter and a second sleeve of greater axial length than the first sleeve but of substantially the same diameter; the upper edge of the first sleeve has internally an abutment edge spaced a small distance therefrom and externally a curved wall section extending above the upper edge so that when the second sleeve engages the upper edge of the first sleeve, the curved wall section will prevent lateral movement between the sleeves.

Abstract: An overhead apparatus for transferring a fluid medium between a first moveable location and a second fixed location which comprises a container for a fluid medium; a conduit assembly for selectively communicating the container with a location spaced therefrom; a conduit support assembly adjacent to the container for pivotally supporting at least a portion of the conduit at a location above ground level to provide selective fluid medium communication between the container and the location spaced therefrom, such that a fluid medium may be transferred therebetween while permitting the unimpeded passage of traffic thereunder and whereby at least a portion of the conduit assembly may be pivotally rotated between a first storage position and a second operating position.

Abstract: A tube connecting device is provided that connects rectangular tube ends in a fluid-tight manner with one another. The tube ends communicate with one another at their ends in a tube connecting device. A first tube end has a frame that is open on one side, this frame having a circumferential groove. A second tube end has a circumferential flange that is received in the circumferential groove. This open side of the frame is covered by a sealing strip fastened thereto, this strip clampingly spanning adjacent portions of the frame and flange.

Abstract: A clamping device for securing an object within an aperture of a ring member utilizing a shape memory alloy material. The shape memory alloy material contracts when heated and operates to bias pin members inwardly within a central opening of the ring to thereby secure an object such as a canister placed therein. The shape memory alloy material may be in the form of a strap or wire which is easily heated and provides for a fast clamping and release action of the clamping device.

Abstract: A universally articulable supporting sheath comprises an interconnected series of links, each having a convex spherical surface at one end, and a concave spherical surface at its opposite end. The concave and convex surfaces mate with one another to form the sheath. Special links having branch openings may be provided. Various forms of waterproofing seals are provided, including O-rings, axially compressed rings, flexible belts, and ridges on the spherical surfaces. The links can be fitted together by thermal expansion. However, an axilly split link is also described, which comprises two parts which snap together. The split parts may be molded as a unit with an integral thin wall hinge. The bending characteristics and bending radius of a sheath can be modified by insertion of spacers between the links at selected locations, or by the insertion of pins into radial holes provided in the links.

Abstract: A pipe coupling assembly for plain end pipe of the type in which a packing ring is compressed in an internal groove by a thrust ring to squeeze it against the outer surface of the pipe and effect a seal therewith. The thrust ring is made of a plurality of accurate segments which can be economically produced and assembled in the coupling body. The segments are mechanically interlocked in the body by cooperation with other elements of the assembly to avoid separate retainer members. The segments have a configuration which avoids significant circumferential gaps in the packing compression face of the ring and reduces the necessary axial length of the groove.

Abstract: Apparatus for forming a grouting member, for example, a grouted pile, in deep water comprises a female coupling member for connection to a male coupling member located on the sea bed, a conical guide for guiding the male coupling member into engagement with the female coupling member, a rotatable locking pin having an arcute recess portion, operable by a remotely operated underwater vehicle, for retaining the male coupling member in engagement with the female coupling member, and a connector for connecting the female coupling member to a source of grouting material.

Abstract: The invention pertains to a fueling nozzle vapor collecting apparatus attachable to a standard fuel dispensing nozzle spout. The apparatus includes a rigid plate connected to the spout having an annular resilient cup-shaped hood affixed to the plate periphery having a foam cushion defined on its outer edge for sealingly engaging the surface surrounding a fuel tank inlet. A collecting hose for the vapor is attached to a port defined in the plate for venting the vapor to a location remote from the nozzle, and a sight glass is adjustably positionable within a seal located in the plate providing visual observance of the fuel level.

Abstract: A pipe coupling is disclosed for coupling together complimentary flexible hoses. The pipe coupling includes a first tubular member having a first and a second end, the first end of the first member defining a first bore and a first counterbore. A second tubular member has a first and a second end and the first end of the second member defines a second bore and a second counterbore. The second counterbore is of the same diameter as the first counterbore and is aligned with the first counterbore when the first and the second members are coupled together. A tubular insert includes a first and a second end and the insert extends between the first and the second bores such that the external surface of the insert engages the first and the second bores with the first end of the insert being disposed adjacent the first bore and the second end of the insert being disposed adjacent the second bore. An annular seal is disposed in an annular space defined by the first and the second counterbores and the insert.

Abstract: A metal or plastic coupling connector (14) is secured to the end portion of a flexible thermoplastic pipe (12) by means of a plurality of thermoplastic plugs (22), (23) (24) which are positioned through access holes (18), (19) and (20) in coupling connector (14) and which are fused to the walls of the flexible plastic pipe (12) to form an integral part thereof. The plugs (22), (23), (24) prevent both longitudinal and rotational movement of coupling connector (14) relative to plastic pipe (12).

Abstract: A connector for coupling a conduit to a junction box. The connector includes a one piece elongated body portion having a distal end for receiving the conduit and a proximal end for connection in an aperture of the junction box. A pair of radially projecting flange members are spaced apart at the proximal end of the body portion for straddling the aperture edge wall of the junction box. An eccentric cam projecting from the tubular body portion is rotatable into an interference engagement with an outer surface of the apertured wall of the junction box to clamp the connector in place. The cam includes a screw having an offset head. One of the flange members includes a longer tab portion and an opposing smaller tab portion. The other flange member includes an annular rim.

Abstract: A thrust rod anchor for utilization in conjunction with a tied form of pipe joint restrainer system. The anchor utilizes two arcuate band segments the ends of which are welded to elongate junction devices such as blocks. These junctions are bolted together in the course of assembling the anchor over the outside surface of a pipe. The assemblage of junctions and arcuate band segments support thrust rod connectors having apertures formed in thrust plates thereof advantageously spaced outwardly from the band segments. Spaced away from the thrust plates of each connector are pairs of set screws. A buttress arrangement is utilized to support the thrust plates of the tie rod connectors. The anchor assemblies have been shown to provide enhanced anchoring resistance to thrust forces and to be more facilly mounted upon a pipe surface.

Abstract: A clamping device for camera accessories includes a cylindrical adaptor member defining a lens hood. The inner periphery of the adaptor member is formed with an annular collar member which has an internal diameter smaller than the external diameter of a collar formed on the outer sleeve of a lens barrel along a V-shaped groove which is formed on the outer periphery of the outer sleeve. The collar member serves to prevent the hood from connecting with the lens barrel at an undesirable position.

Abstract: A pipe connector especially suitable for interconnecting a marine riser to a subsea wellhead, the connector comprising an annular body that telescopes over the wellhead, and a plurality of lockdown screw assemblies extending through radial ports in the body to releasably grip and secure the connector to the wellhead. Each screw assembly comprises a lockdown dog for engaging the recess beneath the wellhead hub flange, a bolt-like dog retainer secured to the dog and slidably extending into a lockdown screw that is threaded into one of the radial ports, and a spring system for biasing the dog away from the lockdown screw towards engagement with the wellhead.

Abstract: A push one fitting for pipe joints and comprising a bell having a central bore adapted to receive one end of the pipe joint therein, a sealing member interposed between the outer periphery of the pipe joint and the inner periphery of the bell, and clamping apparatus cooperating directly with the bell for securing the bell in position on the pipe joint, the clamping apparatus being in the form of set screws extending through the sidewall of the bell for engagement with the pipe, or a split ring having a hook-shaped flange for engagement with a complementary groove on the outer periphery of the bell.

Abstract: The invention is an improved support for meters, in particular for water meters. The invention can be used as a universal application because it is adjustable. Meter supports of the prior art are usually of a common yoke type and each meter configuration requires a meter support of its own because of its variation in dimensions. The present adjustable feature is easily adaptable to any size or configuration of meters. The universal and adjustable meter support consists of two adapters to fit the inlet and outlet ports of the meter being installed, two end members, and a spacer member. The spacer member is easily fabricated from commonly available stock. The simple assembly of the five simple components to the meter to be supported indicates its adjustability and universal application.

Abstract: A ductile iron molded pipe joint gland used to create an effective and lasting seal between interfitting pipe sections allows considerable deflection of the joint in any direction from the axis of the pipeline without loss of seal integrity. The interfitting pipe sections are mechanically joined securely by the gland and compressible seal in a follower gland embodiment and also by angled set screws in a retainer gland embodiment. The pipe joint gland utilizes a minimum of material for reduced weight and savings of energy in its manufacture and transportation without sacrifice of strength. The construction and shallow angle of the sealing gasket engaging face of the gland prevents gasket creep under high pressure.

Abstract: A system for distributing fluids over a planar surface comprising a plurality of lengths of rigid perforate tubing and a plurality of fluid-tight articulated joints, each joint having an inlet port and a discharge port. The lengths of tubing and the joints are connected ad seriatim with joints interposed between adjacent lengths of tubing whereby the tubing can be arranged in accordance with the distribution pattern over a portion of the area. Each port of the fluid-tight joint communicates with a body element having a central bore and a peripheral flange. The flange of the inlet port mates with the flange of the discharge port so that the central bores fall into register with one another and the body elements of the respective ports communicate so that fluid introduced into the inlet port exits through the discharge port.

Abstract: A fluid conduit system is disclosed which comprises a rigid duct pipe having a cylindrical outer surface, a flexible metal hose telescoped onto the pipe, a clamp assembly securing the hose to the pipe and a seal between the hose throat and the pipe. The flexible metal hose is constructed from interlocking helical convolutions defining a helicoidal interior throat formed in part by a helical recess, has an end region contacting the duct pipe surface and a plurality of generally axially extending slots formed in the hose end region. The clamp assembly is disposed about the hose end region for urging the hose into engagement with the pipe. The seal is disposed in the throat recess for blocking passage of fluid between the hose and the pipe through the recess.

Abstract: A fluid manifold includes at least two releasably interconnected modules, a valve assembly being mountable on each module. A fluid supply channel in each module is in fluid communication with the valve assembly thereon and with fluid supply channels in adjacent modules. A seal assembly provided between adjacent modules prevents leakage of fluid from the supply channels. Each module has two recesses at one end and two outwardly projecting and integral arms at the other end which are received in the recesses on an adjacent module. The arms and recesses have cooperating detents which retain the modules in the interconnected relationship, and screws extend into grooves provided on the arms to maintain the modules locked together.

Abstract: A pipe joint comprising a joint body provided with an insertion hole into which a pipe to be joined is inserted to be retained and a screw member adapted to engage with a fixing hole bored in the joint body and to form a recessed part on the outer periphery of the pipe by the engagement thereof with the joint body. Turning direction of the screw member conforms to pipe insertion direction. When joining two pipes together, a set of screw members for tightly fixing the pipes to the joint body respectively are provided in such an arrangement as perpendicular with each other. A boring member such as a drill is provided on the tip of the screw member so as to form the recessed part on the periphery of the pipe by cutting.

Abstract: A thrust rod anchor for utilization in conjunction with a tied form of pipe joint restrainer system. The anchor utilizes spacers which are supported by flanges at their outer extremities and are bolted together over a pipe. A pipe engaging support is provided in conjunction with the outwardly disposed portions of the spacers in a manner wherein a rigid structural support is located adjacent to the surface of the pipe which serves to support and carry symmetrically disposed pipe engaging set screws. Thrust rods are connected to the assembly intermediate outwardly disposed connecting bolts and the set screws. The anchor assemblies of the invention have been shown to provide substantially enhanced anchoring resistance to thrust forces.

Abstract: A connector for releasably securing end pin and box portions of adjacent pipe sections in a telescopic relationship along aligned longitudinal axis to provide an internal fluid flow passageway. One of the end portions is provided with a plurality of threaded openings disposed in a radial relationship about the longitudinal axis and adjacent the other end portion, the other end portion having a similar plurality of openings that align with the threaded openings when the end portions are positioned for connection, each of said thread openings having a threaded latch screw operably positioned therein for movement to extend from said threaded opening into the aligned opening on the other end portion for securing the end portion together.

Abstract: The invention starts from such a conventional ball valve assembly which includes a valve body, a valve ball, each pair of unions, body caps and cap nuts arranged symmetrically at the both sides of the said valve ball. There are provided retaining plates or pins extending laterally for positioning the unions relative to the valve body. These small retainer plates or pins are inserted through perforations formed through the wall of the valve body. In addition, the unions are formed with ring grooves adapted for receiving the root portions of these retainer plates or pins.

Abstract: In a pipe coupling for connecting pipes as fluid conduits, a split clamping ring, which is of arcuated configuration in cross section, has a pair of spaced circular sharp edges directed toward the pipe for firm engagement therewith and is disposed in an annular groove formed internally of a body so as to be slightly displaceable relatively to the groove in an axial direction of the body when a certain axial force is applied to the pipe; a deformable sealing ring is disposed in another annular groove formed internally of the body; and a plurality of depressing members are provided for adjustably compressing the clamping ring diametrically.

Abstract: A heat exchanger has a heat-exchange plate having an edge and formed with a lurality of parallel spaced-apart longitudinal passages opening at the edge and with a plurality of transversely throughgoing plate holes at the edge between the passages. A manifold pipe formed with a row of manifold holes all opening in the same direction and spaced apart the same as the passages at the edge can be fitted to the plate with the plate edge over the row of manifold holes so that each of the passages is aligned longitudinally with a respective one of the manifold holes. A pair of L-section guides fixed on the pipe flank the row of manifold holes and define a gap corresponding to the shape of the plate at the edge. These guides are formed between the manifold holes with laterally throughgoing guide holes transversely alignable with the plate holes when the edge is fitted over the row of manifold holes.

Abstract: A pipe joint for preventing separation comprising a holding member connectable to an annular outer flange formed at the end of a socket and surrounding the outer periphery of a spigot outside the socket, the holding member being annular or being adapted to form an annular shape, the holding member being provided on its inner periphery with a tapered surface increasing in diameter toward the socket; a stopper in the form of a ring divided at one portion and provided with an outer peripheral tapered surface increasing in diameter toward the socket and with engaging edges in circumferential rows on its inner periphery, the stopper being interposed between the tapered surface of the holding member and the spigot outer periphery; and tap bolts extending through the holding member at suitable portions along its circumference for pressing the stopper from outside against the spigot outer periphery. Because the stopper is thus shaped, the joint is easy to assemble and manufacture.

Abstract: A water distributing assembly for use with a section of upwardly bowed rigid conduit supported at the opposite lower ends thereof by wheeled towers so that its longitudinal axis is disposed within a vertical plane for movement over a field in a direction transverse to said vertical plane. The water distributing assembly includes an inverted T-shaped pipe assembly for containing water under pressure having a plurality of sprinkler heads fixedly mounted in longitudinally spaced relation. A flexible hose assembly is provided for communicating the water under pressure in the conduit to the pipe assembly and sprinkler heads so as to accommodate five different adjustable movements between the pipe assembly and conduit provided by a clamping assembly.

Abstract: A locking device for pipe couplings of the non-threaded type arranges an elongated rotatable cam transversely of the coupling in engagement with a pipe positioned therein and extending therefrom to forcefully engage the pipe in the coupling to prevent deviation from the axis of the coupling as well as rotation of the coupling relative to the pipe or vice versa.

Abstract: A threadless pipe fitting of the "stab-in" type wherein a fluid tight connection between a cylindrical conduit and fitting is achieved merely by inserting the fitting upon the conduit end. An annular elastomeric seal within a groove defined in the fitting conduit receiving bore engages the conduit outer surface in a combination compression and lip seal manner wherein both elastomeric compression forces and fluid pressure forces maintain a sealing engagement between the seal and conduit. Additionally, set screw means radially threaded into the fitting mechanically maintain the conduit and fitting assembly, and the set screw includes torque limiting means for preventing excessive radial forces, and the nose of the set screw means is shaped to provide maximum frictional engagement with the conduit with minimal radial force.