Abstract: A retaining strap for use in supplementing the securement by a C-clamp of a load carrying rod to an I-Beam in steel construction. The strap defines an arcuate slot proximate one end thereof which is adapted to be hooked about the load carrying rod such that the strap can be extended across a portion of the I-Beam and a second extended end portion of the strap bent about the I-Beam to enhance securement of the rod to the I-Beam. In a second embodiment of the invention the slot is formed in a perpendicular disposed ear portion adjacent one end of the strap which is adapted to engage a leg portion of a "U"-shaped hanger such that the strap can be extended across the hanger and the extended end bent about and secured to a second leg of a hanger for securing a fluid carrying conduit within the saddle of the hanger.

Abstract: A flexible and potable water hose and ridged conduit support systems in a aircraft provides a self-locating snap-in potable water support bracket which supports a generally cylindrical tray for receiving a potable water hose. The bracket slips over a structural beam flange without requiring that the structural member be drilled or otherwise prepared for fastening of the bracket. Attachment is maintained through frictional compression by the bottom of the bracket.

Abstract: A placement and support system for installing long lengths of connected pipe sections and method of using the same are provided having a series of pairs of spaced apart piles that are installed at predetermined sites by pile-driving into the floor of an expanse and, in particular, a body of water. Each pile has a bent seat at lower end and the piles are driven until the seats are positioned at the desired distance above the floor. The sections of pipe are preconnected on land or on a barge to a desired length. A prefabricated pipe saddle assembly is installed between each pair of piles and positioned above the water line by wedging or a hydraulic jack to form a series of pipe saddle assemblies. Each pipe saddle assembly has a transverse support beam. There is a pipe sleeve at each end of the support beam dimensioned to slide over the piles. A generally U-shaped pipe saddle is affixed to the transverse beam.

Abstract: A support apparatus for a tendon-receiving duct including a cradle for receiving an exterior surface of a duct therein and a clamp connected to the cradle and extending therebelow for attachment to an underlying object. The cradle is a generally U-shaped member having a length greater than a width of the underlying object received by the clamp. The cradle includes a pair of arms extending upwardly from a transition structure and arranged for receiving an exterior surface of the duct. The clamp includes a pair of clamp members arranged in generally transverse relationship to a longitudinal axis of the cradle. A second pair of clamp members is connected to the cradle and arranged in planar alignment with the first pair of clamp members. The cradle and the clamp are integrally formed together of a polymeric material. The underlying object to which the clamp is connected is a chair or a rebar.

Abstract: A connector comprises first and second opposed, spaced apart locking lugs having first and second opposed, spaced apart faces between which the channel member is clamped. A flexible connection integral with the opposed faces of the locking lugs joins the locking lugs together in a unitary structure in a manner which allows for the space between the opposed faces of the locking lugs to be varied. The first and second locking lugs are provided with axially aligned bores which, when securing the connector to the channel member, receive a fastener for drawing the opposed faces of the locking lugs toward one another when the fastener is advanced into the axially aligned bores for clamping the channel member in between the opposed locking lugs of the connector.

Abstract: A pipe support for use in securing a shower head water supply pipe to the upper edge of a shower enclosure wall. The support includes a body portion which spans the distance between the shower wall and supply pipe. A clamp flange extends upwardly from a rear corner of the body portion and a bifurcated wall flange extends downwardly from the forward corner of the body portion. The wall flange comprises an inner arm which is spaced apart from an outer arm a distance slightly greater than the thickness of the shower wall. The pipe support is slipped over the upper edge of the shower wall and the water supply pipe is then clamped against the upwardly extending clamp flange. The pipe support may comprise a unitary molded piece or an assembly of three angular members.

Abstract: Apparatus for supporting plastic pipe on or from an I-beam. A pair of oppositely disposed brackets is provided for engaging opposite flanges of the beam. Each of the brackets has a U-shaped base portion that forms a groove adapted to closely engage a flange of the beam, and a lug portion having a recess for receiving and supporting a pipe. The apparatus also includes threaded rods connecting the lug portions of the brackets for moving the brackets towards and apart from one another, thereby reversibly securing the brackets to the flanges. An angle iron is mounted to at least one bracket by the threaded rods. Plastic pipe positioned within the recesses of the brackets is attached to the beam by a U-bolt with threaded ends inserted through apertures in the angle iron and secured by matching nuts.

Abstract: A conduit hanging apparatus for securing conduit to a support strut having upper, lower, and side surfaces includes a conduit clip having two compressible members depending from a base portion where each compressible member is disposed on opposite sides of the conduit. Each compressible member has a lower end disposed opposite the base portion and a recess disposed between the lower end and the base portion where the recess is configured to engage and retain the conduit. A strut clamp secured around a portion of the upper and lower surfaces of the strut is arranged to support the conduit clip and the conduit. A fastening means is provided for securing the base portion of the conduit clip to the strut clamp. Also included is a clamping mechanism operatively coupled to the lower end of each compressible member to draw the lower ends together such that the recess of each compressible member provides a frictional fit to retain the conduit disposed therebetween.

Abstract: An electric wire insulators for connection with a T-shaped corner fence post is formed by a generally U-shaped rigid mounting member having parallel legs transversely spanning a T-shaped post. A pair of U-shaped bracket members each journalling a dielectric spool are provided with a threaded rod rigidly connected with the bight portion of the respective U-shaped bracket and threadedly entering the respective mounting member leg for impinging the mounting member on the T-shaped post. One of the U-shaped brackets may be angularly rotated about the axis of its threaded rod for disposing the axis of one dielectric spool normal to the axis of the other dielectric spool.

Abstract: A hold-down device for holding a cable tray on a support includes a rigid member having opposite side edges, opposite side margins adjacent respective side edges, and opposite end portions. The member may be placed on the support in a position in which the opposite side margins of the member bear on edges of the support with the member overlying the slot adjacent a flange of the cable tray. The member is constructed and arranged such that it is selectively securable to the support by a threaded fastener either in a clamping position in which one end portion of the member overlies the flange of the cable tray and may clamp the flange of the cable tray thereby to hold the rail in fixed position with respect to the support, or in a non-clamping position in which the opposite end portion of the member overlies the flange of the cable tray but cannot clamp the flange thereby to permit lengthwise thermal expansion and contraction of the rail while still holding the rail on the support.

Abstract: A fiber optics cable raceway is formed of main channel members and telescope members. The main channel members have a generally U-shaped cross-section with a base, sides, and, at the top, inwardly extending lips. The telescope members have the same cross-section, but are slightly larger so they can fit about the main channel members for a longitudinally sliding fit. By alternately, interfitting main members and telescope members and adjusting the length by telescopic sliding, a raceway of the desired length can quickly be assembled. Small locking clips can then be fitted about the respective overlapping lips of two members to prevent further sliding. The raceway can be installed below the floor by the use of brackets hanging on pre-existing floor-supporting pedestals. It can be installed above a dropped ceiling by the use of hangers clamped to the grid struts of the ceiling. The locking clips serve to electrically interconnect the channel members and the telescope members.

Abstract: A fiber optics cable raceway is formed of main channel members and telescope members. The main channel members have a generally U-shaped cross-section with a base, sides, and, at the top, inwardly extending lips. The telescope members have the same cross-section, but are slightly larger so they can fit about the main channel members for a longitudinally sliding fit. By alternately, interfitting main members and telescope members and adjusting the length by telescopic sliding, a raceway of the desired length can quickly be assembled. Small locking clips can then be fitted about the respective overlapping lips of two members to prevent further sliding. The raceway can be installed below the floor by the use of brackets hanging on pre-existing floor-supporting pedestals. It can be installed above a dropped ceiling by the use of hangers clamped to the grid struts of the ceiling. The locking clips serve to electrically interconnect the channel members and the telescope members.

Abstract: A clamp for clamping attachment to a mine roof channel, which clamp has a pair of top portions and a pair of bottom portions for engaging the top and bottom, respectively, of the mine roof channel. A bolt, such as an eye-bolt, has a threaded portion extending between the top and bottom portions of the clamp forming a component part of the clamp. Such threaded portion, in one modification of the clamp, engages the bottom central portion of the mine roof channel. Loads such as wires, hoses etc. may be supported by the eye of eye-bolt so as to be adjustably positioned close to the sidewalls of the mine.

Abstract: Systems for supporting pipes and other loads which include elongated struts and channels that are fabricated from non-metallic materials and can be surface mounted. Clamps, connectors, and other fittings for attaching the supported load to the channel fit into cooperating notches in flanges spaced inwardly from the side walls of the channel. This interfitting relationship provides a positive connection between the fitting and the channel, keeping even heavy loads and loads subjected to vibration, hammering, or the like from slipping, even if the supporting channel is vertically oriented and the load is therefore the most susceptible to slippage. Rounded transition sections at the ends of the notches facilitate the manufacture of the channels, minimize or even eliminate stress concentrations, and insure that loads supported by the system are satisfactorily distributed even if the fittings are tilted or canted relative to the channels.

Abstract: A track circuit retainer clip adapted to be driven on the edge of the base of a rail holds one or a plurality of conductors parallel to and within the rail base edge. The clip comprises a U-shape spring metal clip having a bight portion and upper and lower legs which embrace the rail base edge. The upper leg includes a center spring finger extending from the bight portion which includes two concave side-by-side recesses to hold the conductors against the upper leg. The outer end of the spring finger flares upwardly to facilitate insertion and the lateral edges of the spring finger are bent upwardly to avoid biting into the conductors. The lower leg includes barbs struck from the edge which terminate in truncated biting edges extending substantially parallel to the rail base edge. The line contact transverse the direction of insertion provides ease of insertion and better gripping or holding action without scratching or notching the bottom of the rail.

Abstract: A bundling strap, such as used for bundling a group of wires, includes a spring device for grasping a thin rib or the like thereby avoiding the need for drilling a hole according to the customary practice.

Abstract: A track circuit retainer clip for a running rail adapted to secure a conductor extending perpendicular to the rail around the edge of the base of the rail in close proximity therewith. The clip includes a U-shape spring metal body having upper and lower legs adapted to embrace the edge of the base of the rail. Each leg includes a center section bowed outwardly adapted to embrace the conductor and hold it tightly against the top and bottom of the rail base edge. The legs of the clip include inwardly directed tangs or barbs struck from the edge of the legs, the inwardly projecting tip of each tang being truncated to provide a linear biting edge to engage the top and bottom of the rail base with a line contact extending longitudinally of the rail or normal to the direction of insertion of the clip.

Abstract: The assembly is used for supporting pipes, etc from the ceilings of industrial buildings. Conventional pipe hangars are of screwed rod, (typically 3/8 inch) and the assembly includes a U-shaped clevis, which fits over the screwed rod. A bolt protruding into the space between the limbs of the U-shape engages the rod, and acts to clamp the clevis to the rod. The bolt lies off-center with respect to the rod. The bolt, when tightened, also clamps the clevis to a pipe-stay member of the assembly.

Abstract: A fence clip assembly for securing strands of fencing wire and the like to wood and metal fence posts and including a pair of ears with holes therethrough and a main body with a wire holder that may comprise a pin to lock strands of wire to a clip by insertion through aligned holes in flanges and that is removable to allow the wire to be readily released and that further includes an insulator connector to insulate supported electrical wires at the fence poles.

Abstract: Dispensing tube and spring clamp asembly comprising a hinged jaw spring clamp adapted to train the dispensing end of a delivery tube and to hold it in a fixed position while fluid material is dispensed under pressure therethrough.

Abstract: A bundling strap, such as used for bundling a group of wires, includes a spring device for grasping a thin rib or the like thereby avoiding the need for drilling a hole according to the customary practice.

Abstract: Systems for supporting pipes and other loads from elongated struts and channels. Clamps, connectors, and other fittings for attaching the supported load to the channel fit into cooperating notches formed in flanges spaced inwardly from the side walls of the channel. This interfitting relationship provides a positive connection between the fitting and the channel, keeping even heavy loads and loads subjected to vibration, hammering, or the like and supported from the channel slipping, even if the supporting channel is vertically oriented and the load is therefore the most susceptible to slippage.

Abstract: A wireway is provided from a unitary member, shaped as a channel, with a slotted central web for supporting cables or the like. One of the side flanges of the channel has an extension with a doubled over portion used as the attachment to a downcomer. Flanges at the opposite edges of the doubled over portion receive the downcomer. When attached to the open side of a downcomer channel, a spacer block extends between the downcomer and the doubled over portion.

Abstract: A support device which is particularly adapted to join a length of rope to a structural member of a building, for example, has a body prepared for ready attachment to the structural member. Projecting outwardly from the body of the device is a set of spaced apart clips. Each clip is defined by an outer strap spaced from the device body and joined thereto by a connecting strap to form a holding area for the rope. The clips are positioned in an opposing manner so that each clip holding area faces in an opposite direction. The outer strap of each clip has an angularly offset wall. These walls are spaced apart and positioned parallel to form an opening to a rope passageway defined by alignment of the clip holding areas. During use the support device is attached to the structural member and an end of the rope length threaded through the passageway to seat in the clip holding areas and be supported horizontally therein.

Abstract: A support attachment for structural stringers includes a strap having a hook portion at one end shaped to engage an edge of a stringer and a normally free end. The strap's surface has a plurality of upstanding engaging elements extending substantially along its entire length. Also included is a body having a hook portion shaped to engage another edge of a stringer. The body has a central portion and a pair of parallel spaced-apart guidewall portions which extend outwardly away from one side of the central portion to form a guide channel. A surface portion of the body, having a plurality of mating upstanding engaging elements, extends outwardly away from the opposite side of the central portion. A guide avenue through the central portion provides a pathway for guiding the strap's free end from between the guidewall portions to the surface portion.

Abstract: A mounting fixture secures a duct to a generally channel-shaped support section having right angle flanges at the distal ends of its sidewalls. The duct mounting fixture includes a base plate having an outer side defining a bearing plane against which an endwall of a duct is adapted to bear. A well or bush receiving a preferably rotatable latch member is located in a middle zone of the base plate. The latch member is adapted to extend through an opening in the endwall of the duct and grip the endwall. At least two retaining teeth are disposed on the underside of said base plate for cooperation with the right angle flanges of a support section and at least one of the retaining teeth is carried by a resiliently deformable arm. The latch member is contiguous with base plate and permanently held along the axis of the well or bush.

Abstract: An adjustable clamp for supporting guard rails or the like or an I-beam side rail of a scaffold system comprises lipped flange members designed to overlap the inner edges of end flanges of the I-beam side rail. The flange members each have a U-shaped outward extension and the extensions are joined together by a web means which is adjustable to permit the flange members to engage both I-beam end flanges snugly. A fastening means passes through the web means and bears against the web of the I-beam. Apertures which pass through the flange members serve to securely support posts for a guard rail or the like.

Abstract: Pipeline pipe support assembly which allows limited slippage of the pipe support between the supported pipe and the supporting beam to the extent that the part of the pipe in contact with the pipe support becomes exposed for inspection and maintenance purposes.

Abstract: This invention relates to a construction fastener and more specifically to a clamp or clip for securing a horizontally extending channel to another hoizontally or vertically extending construction element of miscellaneous configuration. The fastener is formed from a strip of resilient metal or spring steel and at least one end includes a notched portion for engaging a horizontally extending channel. The notched portion is oriented with respect to the horizontal channel such that the longitudinal planar surface of the notched portion is normal to the horizontal axis of the channel. The notched portion includes a cam-like spring tab adapted to spring out of the way and to snap back and lock behind the channel when the channel is inserted into the notched portion.

Abstract: A clamp particularly suitable for use in removably suspending cabinet units from the support rails of counters and other worktops. The clamp is generally J-shaped with an upstanding stem portion, an upper arm portion, and a hook-shaped lower arm portion. The upper arm portion terminates in a rib that projects towards the lower arm portion and also includes a threaded bore which extends along a line that is generally parallel with the lower arm portion and is spaced above the rib. A screw is threadedly received within the bore and, during use of the clamp, the upper arm portion is hooked over the flange of a support rail and the screw is tightened against the rail to pivot the clamp and to force the top wall of a cabinet unit, supported by the clamp's lower arm portion, upwardly into tight engagement with the rail.

Abstract: An alignment bracket assembly for holding and aligning a fire sprinkler supply pipe in a horizontal or vertical orientation relative to a pair of spaced apart building members such as joists, studs or T-bar suspended ceiling frame supports comprises a central member of non-circular cross-section, preferably square, and a pair of end members in telescoping sliding engagement at opposite ends of the central member. The end members each have attachment devices at their free ends for securing them to respective spaced building members. A pipe holding bracket is slidably mounted on the central member and has a pair of arms projecting from the central member for engaging opposite faces of the fire sprinkler pipe between them. The arms can be urged towards one another to grip the fire sprinkler pipe to maintain it in a vertical or horizontal orientation and reduce the risk of displacement or misalignment of the fire sprinkler head during ceiling installation.

Abstract: A connector clamp for attachment to a supporting angle member features a general G shape which provides an entrapping interfit between the clamp and angle member. The clamp also provides threaded openings or sockets to receive cooperatively threaded studs or shanks of items of hardware to be connected with the angle member.

Abstract: A quick operating connector assembly for securing a cable or conduit to a support channel. The device having a central post supporting two sets of opposed parallel locking lungs extending from the post. The post is formed with a slit and a bore intersecting the slit, such that a fastener means received in advance into the bore would effectively open the slit.

Abstract: A cable supporting structure includes a longitudinally extending channel-shaped support structure having a pair of spaced side walls with free end portions turned inwardly to form opposed longitudinally extending flanges. A locking strap has opposite end portions and an intermediate portion therebetween. A support member is positioned within the support structure to extend between the side walls with opposite ends thereof respectively supported by the flanges. The support member includes a pair of slots for receiving the locking strap to cause the intermediate portion to extend around a central body portion of the support member in overlapping relation therewith. The support member includes resiliently deflectable extensions at the ends thereof for producing frictional contact between the support member and the side walls tending to resist movement of the support member within the support structure.

Abstract: A duct mounting fixture for securing a duct to a generally channel-shaped support section having right angle flanges at distal ends of legs or sidewalls is disclosed. The mounting fixture includes a base plate having an outer surface defining a bearing surface for an endwall of a duct, an aperture for a latch member in a middle zone of the outer surface of the base plate, the latch member extending through an opening in the endwall of the duct and grip the endwall. Two pairs of retaining teeth are disposed on the underside of said base plate and selectively cooperable with right angle flanges on different omega- and G-shaped supports. The pairs of retaining teeth are perpendicular to each other and arranged in a generally rectangular array. Thin deformable webs on the retaining teeth restrain the fixture against inadvertent sliding movement on the support section, and thin deformable webs between the head and shank of the latch member compensate for the thickness of the duct endwall.

Abstract: A pipe hanger clamp, formed by bending a flat section of metal bar or plate, has two vertical side members which have been cut so their side view is a "C" shape. The lower arms of these two side members are joined by a horizontally extending end wall about which the side members are bent. Threaded holes in the end wall receive a mounting set screw and a pipe hanger rod for supporting a pipe. An overhead support is clamped between the set screw and the upper arms of the C-shaped side members, such that the load applied to the rod is generally edgewise to the plate thickness, and does not provide an unbending force on the clamp.

Abstract: A conduit support bracket useful in supporting conduit, cable, piping or the like, especially above a dropped ceiling is disclosed. The conduit support bracket comprises a strip of rigid material having engaging means extending from one end to securely engage a T-bar, fixture or other support structure. This engaging means is preferably provided by a plurality of prongs bent and rebent in oppositely inclined directions. The conduit support bracket further comprises a plurality of deformable tabs extending from the opposite end of the rigid strip. At least one of these deformable tabs is shaped to form a channel between itself and the remaining tabs. This channel is of sufficient size and strength to support the conduit or the like. The remaining deformable tabs are of sufficient length to securely hold the conduit in place when deformed, preferably manually, at least partially around the conduit.

Abstract: A pipe hanger having a strap that extends around the pipe, the strap having teeth along each edge. A split sleeve and threaded nut assembly thread onto the ends of the strap and is positioned in an opening in a supporting clamp which is secured to a structural member.

Abstract: A portable clamp/hanger device that provides a rigid connection that is releasable between a support beam and a hoist or other load-carrying means. The device includes a movable platform pivoted to a stationary U-shaped member with an opening therebetween. The flange of a support beam is located within the opening and the platform moves against the flange by tightening an underlying screw threaded through a hollow anchor shaft which is secured to the lower arm of the stationary member. A collar swivels universally about a portion of the anchor shaft and includes posts from which swings a hanger for attaching hooks, shackles, rope ties and the like. The platform is provided with an adjustable cleat for adapting to various sized beams. A locking mechanism is included to prevent loosening of the screw. Alternatively, auxiliary pressure can be applied to the movable jaw with a cam and ratchet mechanism or other force transfer device.

Abstract: A cantilever rack construction for holding material in which there is a base with a generally vertical column having a generally vertically extending web and flange, a cantilever arm, and a pair of connectors for mounting the cantilever arm on the flange of the vertical column, each of the connectors being secured to the cantilever arm and adapted to be mounted on said column at a flange portion. The connectors are constructed and arranged to contact the flange portions at a medial location between the tip and the web thereof.

Abstract: An improved cable clamping device which is suitably adapted to hold and support long hanging electrical cables which extend through a continuous shaft between floors of a high-rise building wherein substantially identical members each including an arcuate portion having flanges at opposite ends and a leg depending from the arcuate portion being first angled outwardly and then downwardly substantially parallel to the flanges and each of the flanges has a boss formed therein with an aperture passing through the boss, preferably with one of the apertures being threaded and the other aperture carrying a captive bolt so that with the arcuate portions positioned about the cable tightening of the two bolts presented on opposite sides forms the assembly whereby the downwardly depending legs rest on a floor and firmly hold and support the cable against descention in the shaft.

Abstract: A clip for mounting a wall or ceiling panel structure having a plurality of panels in which the panels have inturned rims on their longitudinal edges and preferably beads on the rims. The clip has a body having downwardly extending first members preferably adjacent one edge and a downwardly extending fourth member preferably adjacent an opposite edge.A second downwardly extending member having lateral lugs is adjacent and spaced from the first member by an amount to accommodate two rims. A pair of third downwardly extending members is shaped to enable two panels to be spaced from one another and is also provided with a lug so that the clip may alternatively be used for mounting a panel adjacent a wall surface.

Abstract: The invention is concerned with a clamping device for clamping together a scaffolding pole and the flange of a construction member. The device comprises two body parts having arcuate seats, the two body parts being connected together at one end thereof for relative pivotal movement, and the device comprising clamping means to secure the body parts in clamping engagement with the scaffolding pole.The arcuate seats are spaced apart in the axial direction, and one body part comprises an integral extension portion, which extends generally parallel to the longitudinal axis, such that the arcuate seat on the other body part lies (in the axial direction) between the arcuate seat of said one body part and a flange-engaging surface of the extension portion. In this manner by tightening a single nut the clamping means may be operated to secure the clamping device to the scaffolding pole, and simultaneously clamp the flange between the extension portion and the scaffolding pole.

Abstract: The invention relates to a tubular reaction furnace for the indirect heating of crackable fluids, particularly for cracking hydrocarbons used for the extraction of gases rich in CO and H.sub.2, said furnace consisting of a plurality of vertical reaction tubes arranged in a firing chamber with internal fuel-gas burners. The invention primarily relates to furnaces in which cracking takes place at high pressures and temperatures and which are installed on floating carriers such as ships.

Abstract: A threaded U-bolt receives a conduit to be clamped to an I-beam. A moisture resistant, polymeric material covers the conduit support portion of the U-bolt with the bolt threads remaining exposed. A clamping member covered with a moisture, resistant polymeric coating includes a first end portion adapted to engage a flange of the I-beam and a second end portion adapted to engage the conduit. A pair of apertures extend through the clamping member. A pair of resilient polymeric annular flanges extend upwardly from the upper surface of the clamping member and around the apertures. The U-bolt threaded ends extend upwardly through the apertures. A pair of polymeric nuts engage the threaded ends above the annular flanges of the clamping member. A resilient sealing flange extends radially from the open end of each encapsulated nut.

Abstract: A support attachment for aircraft structural stringers is comprised of an elongated body having a first side for being extended transversely across a stringer secured to an aircraft bulkhead. The body has a second side opposite the first side, and available from the second side, there is a device for securing wire supports or other types of supports to the support attachment body. The body is constructed and arranged so that any materials such as cables supported thereby are supported from a centrally located position on the body with respect to the elongated direction and thereby centrally positioned transversely with respect to the stringer. There are slots through each end of the body transverse to the elongated direction thereof, the slots extending through the body from the first side to the second side. Straps slidable in the slots are adapted to be connected to the respective ends of the stringer.

Abstract: A clamp for grounding and clamping a conduit to a support member, such as a cable tray, and comprising a relatively thin pad member interposed between the conduit and the support member. The pad member includes serrations, knurling and/or other surface discontinuities, but is otherwise configured to mate with the conduit and the support member so that when pressure is applied between the mating surfaces a good electrical contact is achieved. The required pressure is provided, for example, by a jaw member and a U-bolt working in combination with the other members such that the jaw contacts the support member opposite at least a portion of the pad in contact with the support member. The ends of the U-bolt pass through the pad and the jaw member so that nuts installed on the ends of the U-bolt cause the conduit to be pressed into the pad. The jaw and the pad securely clamp the support member.

Abstract: A cable tray conduit clamp is comprised of a single one-piece body having a 90.degree. sector plate, a square block protruding from one surface thereof with two sides in alignment with the radii of said sector plate and a bevelled boss protruding from the opposite surface of said plate with two sides thereof disposed in alignment with the radii of said sector plate. The extent of said block along the radii of said plate is substantially greater than the extent of said boss along said radii of said plate while the radial extent of said sector plate is substantially greater than the radial extent of said block. A pair of perpendicular intersecting bores are formed through the block and continue outwardly to the curved periphery of the sector plate as open channels in the surface of the plate from which the block protrudes. A J-shaped bolt having a sleeve nut threaded thereon is secured in one of the channels for clamping the body to a flange cable tray.

Abstract: A cable tray conduit clamp is comprised of a single one-piece body having two parallel plates extending outwardly from a common post located in one corner of the plates. A plurality of set screws are provided in one plate for securing the flange of a cable tray between plates. The post is provided with a bore in which the shank of a rod having a hooked end is freely rotatable. A locknut is threaded on a opposite end of the shank whereby a conduit may be clamped between the hooked end of the rod and the outer surface of one of the plates at any angle relative to the longitudinal direction of the cable tray to which the clamp is secured.

Abstract: A hold-down device for holding a cable tray on a support includes a rigid member having opposite side edges, opposite side margins adjacent respective side edges, and opposite end portions. The member may be placed on the support in a position in which the opposite side margins of the member bear on edges of the support with the member overlying the slot adjacent a flange of the cable tray. The member is constructed and arranged such that it is selectively securable to the support by a threaded fastener either in a clamping position in which one end portion of the member overlies the flange of the cable tray and may clamp the flange of the cable tray thereby to hold the rail in fixed position with respect to the support, or in a non-clamping position in which the opposite end portion of the member overlies the flange of the cable tray but cannot clamp the flange thereby to permit lengthwise thermal expansion and contraction of the rail while still holding the rail on the support.