Abstract: Disclosed herein is a cable clamp having a quite simple and easily operable construction, wherein a wedge-like member and a sleeve-like member are telescopically assembled to clamp a cable therebetween, said two members being adapted to be in an inseparable (or linked) condition at all times.

Abstract: The secure release apparatus is used with an anti-theft device having a member which is movable in response to an applied magnetic field. The secure release apparatus comprises a cover plate with an access opening and a permanent magnet structure which produces a concentrated magnetic field sufficiently strong to move the member. A tamper prevention structure is movable into a first position for preventing the member from moving into the concentrated field.

Abstract: An apparatus (1) for attaching each end of a rope (12) to the boom of a sail board so that the rope (12) can be used by a rider with a "Hawaiian Harness" the apparatus (1) having in each case a frame (2) with a pliable member (3) held to the frame (2) and adapted to extend around the boom arranged so that with the frame (2) lying alongside the boom tension on the rope (12) will cause the frame (2) to tighten a gripping hold of the pliable member (3) on the boom. The apparatus provides for good retention of the rope position during periods of non-use and facilitates adjustment of its position during use by a sail board rider.

Abstract: An improved clamp for nonmetallic rope has a plug formed with an annular collar at one end and a plurality of tapered segments formed integrally with the collar and extending outwardly therefrom. The plug has a hollow axial bore defined by a serrated cylindrical surface to increase the gripping effect on a rope telescopically inserted into the bore. The plug is telescopically inserted into the tapered bore of an outer sleeve which compresses the tapered segments of the plug against the rope. The length of the plug is at least ten times greater than the diameter of its bore, which in combination with the annular collar, provides an increased clamping pressure between the serrated surfaces of the tapered segments and the rope throughout the length of the plug.

Abstract: A fastener for securing in position a string to be used for gathering the skirt of a coat or the open edge of a pouch, for example, is constructed of a housing provided therein with a blind cavity, a sliding member admitted into the blind cavity of the housing, and a spring interposed between the housing and the sliding member; the housing and the sliding member being respectively provided laterally therein with perforations and insertion holes adapted to come into mutual coincidence when the sliding member is pushed into the housing against the energizing force of the spring. Since opposed end portions of a given string can be inserted sidewise through the coinciding insertion holes into the perforations, this string fastener can be used advantageously without requiring the opposed end portions of the string to be always kept in mutual contact. It imposes no limitation upon the length of the string to be tied and enjoys ease of handling.

Abstract: A releasable grip-lock device for flexible elongate connectors such as ropes are used, particularly, in the cattle industry. The device is especially applicable to guillotine-type doors which are raised, maintained in a raised position in rock condition, and subsequently dropped at rather precise times so as to retain cattle in enclosures. The accommodating structure includes the principal of jaws, one of which is spring-loaded, for the purpose of gripping the rope holding the door open, for example, or actuates as a feeder which serves as a detent to keep the jaws open so that a rope will slip therethrough when a door to which the rope is attached or to which the same cooperates is dropped at desired times. A control lever is incorporated for the purpose of requiring a positive situation to urge the jaws from locked to unlocked position.

Abstract: An improved cord grip and strain relief fitting to restrain and seal flexible cord to an enclosure or junction box. The structure includes a body member, a grommet, a strain relief member and a nut. Tightening the nut onto the body member results in radial forces between the grommet and the cord to restrain the cord and provide a water tight seal. The grommet is stuffed into the body member by an interaction between the grommet and the strain relief member as the nut is engaged with the body member. The lower end of the strain relief member has legs which mate with sockets in the grommet and which receive a radial inward force during final assembly causing the legs to pivot inward and apply an additional retaining and restraining force on the cord. The strain relief member has an upper portion which flares away from the cord thereby providing an increased radius of curvature if the cord is deflected from its longitudinal direction at the external end of the fitting.

Abstract: A device for clamping together two lengths of rope such as a rope formed of braided plastic, the device having a pair of inner core members each having a mating inner surface so that when the members are positioned in engagement or adjacent to each other they provide an elongated core having a generally tapered truncated conical external surface having threads on the external surface. Each of the core members has a recess in the inner surface in the plane of the longitudinal axis so that two portions of a rope may be positioned between mated core members. An outer ring having a tapered opening therethrough is internally threaded so that when the outer ring is screwed onto the abutted core members it forces them together, clamping rope portions therebetween, the grooves formed in the abutting surfaces of the core members preferably have integral pointed spikes which penetrate the fibers of rope portions positioned between the core members to more securely hold the rope portions against slippage.

Abstract: A clamping arrangement for clamping a corona discharge wire in electrophotographic copying apparatuses has a bush member with an inner surface provided with a plurality of teeth, a clamping member located inside the bush and having an outer surface provided with a plurality of teeth, so that one end portion of the corona discharge wire can be clamped between the teeth of the bush and the clamping member, a sliding member displaceable in a longitudinal direction of the corona discharge wire so as to support at least the clamping member therein, and a spring member engaging the sliding member and acting in a direction which is opposite to the pulling direction of the corona discharge wire.

Abstract: In a device, for example an electrical coupling device, for locating or gripping an elongated member, for example an insulated conductor or cable, there is provided the combination of a pair of jaws and a camming means into which the pair of jaws is insertable for the purpose of urging the jaws towards one another to locate or grip the elongated member. To enable the device to accommodate elongated members of different sizes, the elongated member-engaging face of at least one of the jaws is provided with a plurality of spaced-apart projections, for example pimples and/or ridges, which, when the pair of jaws is inserted into the camming means to bring said faces into confrontation with one another, project towards the elongated member-engaging face of the other jaw.

Abstract: Fastening means for the wrist strap of a ski stick, said means being positioned in a cavity (3) of the knob (2) of a stick handle (1). The fastening means is a removable unit separable from the stick knob and consisting of two plastic elements (5) and (7), between which said wrist strap (4) can be anchored as desired. The plastic elements are discrete elements within which the opposite ends of wrist strap (4) are embedded by molding. One (5) of the elements is anchored by profile locking (10, 11) in anchoring grooves (10) on the walls of cavity (3) in such a position that a wrist strap anchoring point (6) will be on the top face of said element. The other plastic element (7) is wedged into a downwards converging space between the wall of cavity (3) and the first plastic element (5) in such a position that another wrist strap anchoring point (8) will be on the lower face of the first element.

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

Abstract: A cord adjuster comprising a body 31 having a through passage 32 which is divided longitudinally for the accommodation of cord sections capable of being passed therethrough in side-by-side spaced arrangement, and an arresting member 10 supported on the body for displacement between two end positions, said arresting member being provided with clamping areas 21, 22 disposed in the through passage and cooperating with respective associated clamping areas 45, 46 of the body, in order to clamp the cord sections between them in tight clamping engagement in one end position of the arresting member.

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

Abstract: A magnetic decoupler for use with an antitheft device is disclosed. In one preferred embodiment, the decoupler includes a composite permanent magnet comprising an annular permanent magnet that may be of ceramic and a second, preferably disc-shaped permanent magnet, which is preferably more strongly magnetized than the annular magnet and which preferably comprises a rare earth element. The two magnets are coaxially aligned with but axially displaced from each other and are oriented with the opposite polarity so as to create a region of especially great magnetic flux in the bore of the annular magnet. A cover plate, preferably of cold-rolled steel, may be provided adjacent the face of the annular magnet that is remote from the second magnet to further concentrate the flux in the bore.

Abstract: The invention disclosed herein is a device which connects a transmission cable to a transmission tower. The device includes an elongated body, an insert member, and a wedge member. The cable extends through the body and is held securely between the insert member and wedge members within the body.

Abstract: A cord clamp for binding flexible cords and the like having a sleeve and plunger which are axially movable with respect to one another. One end of each of the plunger and sleeve is provided with a shoulder to prevent separation as the pieces undergo axial movement, and a channel and rib are provided to prevent relative rotation of the plunger and sleeve. The plunger and sleeve are each provided with alignable openings in offset relation to the rib and channel assembly, and these openings move into and out of radial alignment as the plunger and sleeve are axially moved with respect to one another. A spring is provided to urge separation of the plunger and sleeve so that the openings are biased to be out of radial alignment. A cap member seals the entire structure at an end opposite the shoulder formed on the sleeve.

Abstract: The disclosure is of apparatus, and the positioning and adjustment thereof within a form in which a pre-tensioned pre-stressed concrete structural member is to be cast, for holding a tensioned strand extending through the concrete against movement after release of the tensioning force, thereby to prevent the formation in the cast body of the weakened zone known as the "development length.

Abstract: The invention is related to a line post insulator suitable for overhead lines of a higher voltage value than 1000 V. One of the practical examples of the line post insulator is equipped with a swinging stirrup placed in the insulator cap. In the swinging stirrup there is a tapered hole narrowing downwardly and holding clamping jaws. The clamping jaws are constructed so that they fit into the tapered hole. Another practical example of the line post insulator is suitable for fixing a conductor and/or a tie wire. In the insulator cap of this line post insulator a slot is formed narrowing in one axial direction of the conductor or the tie wire. In the narrowing slot above the conductor or the tie wire, a tapered clamping jaw is placed into the slot. In the slot there is a clamping jaw with parallel side edges placed under the conductor or the tie wire.

Abstract: A drawing-in dog for a wire drawing machine has gripping surfaces formed on two opposed wedge members. Both wedge members are slideably mounted in a housing which tapers towards the aperture through which the wire is to be inserted. One wedge member is coupled by a toggle link to a lever pivoted on the housing, whereby the wedge member may be moved between a released position and a position where it is urged by the lever and toggle link into positive gripping engagement with the wire. The other wedge member is freely slideable so as to enable the dog to accommodate wire of a range of diameters.

Abstract: A clamping device comprising an elongated wedge body having a bifurcated end, and a second end opposite the bifurcated end. The wedge body is of substantially rectangular transverse cross-sectional configuration, and is relatively thick at the second end, tapering to a relatively thin dimension at the bifurcated end. The wedge body has first and second sides extending between its bifurcated and second ends. Each of these sides carries a plurality of longitudinally spaced, contiguous teeth or serrations over a major portion of its length. The bifurcation in one end of the wedge body defines a pair of spaced, substantially parallel legs, which legs have continuations of the teeth or serrations extended along one side thereof, and are relatively smooth on the opposite side thereof. In a useful combination, the clamping device retains an electrical conductor in place at the location where it enters a knock-out window in a synthetic resin electrical box.

Abstract: A safety clamp slidably mounted on a vertical safety rail in proximity to a ladder is attached to a workman's belt by a pivotal actuating arm which shifts a wedge plate into clamping engagement with a safety carrier immediately under free fall conditions encountered if the workman falls from the ladder. The rail is spaced from the ladder mounting brackets by circular sleeves.

Abstract: An inner member is telescopically mounted within an outer tubular member and is normally locked against telescopic sliding movement relative to the outer member by a coupling mounted for back and forth manual manipulation along the outside of the two telescoping members at the location where the two members are coupled together. Manual manipulation of the coupling in one direction unlocks the inner member to permit sliding movement thereof relative to the outer member and the coupling, so long as the coupling is urged manually in the one direction. When the coupling is released, it automatically locks the inner member against further sliding movement.

Abstract: The connecting device achieves the electrical junction and mechanical assembly of at least two thread-like single-strand or multi-strand conductors through the agency of a connecting member insulated by at least one slidable terminal which is at least partly dielectric and locked in position on said member after the union of the member with the conductors. The connecting member has at least two inputs and at least two orifices in which the bared ends of the conductors are engaged in the form of a labyrinth shape. The terminal covers the bared ends of the two conductors. The connecting device is applicable to the electrical installations of living quarters and industrial premises and to any machine supplied with electricity.

Abstract: The invention comprises an externally mounted locking mechanism for telescoping tubes that permits releasable adjustment of the tubes to any telescoping position relative to each other and utilizes multiple cam action locking means operating both longitudinally and circumferentially relative to the tubes. Two preferred embodiments are disclosed, a two-piece structure and a three-piece structure, both of which are preferably molded from a plastic material.

Abstract: A tool for releasing cone locks which can generally be moved in only a single direction on a cable or rod wherein the tool is provided with a portion that can be inserted into the lock to engage and release the locking mechanism such that the lock can be removed from the cable or rod thus preventing the rod and cable from having to be cut.

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

Abstract: A cord locking device including a body containing a central passage through which cords extend, and within which the cords can be releasably retained against longitudinal movement by a shiftable locking slide in the passage, with the ends of the cords in locked condition forming loops having a bow-like configuration and extending outwardly away from the body and then back to the body, and with the body containing two side passages located at opposite sides respectively of the main central passage and adapted to receive and hold the second ends of the loops to maintain the looped configuration.

Abstract: A boat anchoring means includes, beside the conventional anchor, a number of sinker bodies attached to the hawser rope, adjacent to the anchor. In order that these sinkers shall not cause damage to the hull or equipment, and provide a good grip during hauling-in, each sinker is formed as a symmetrical body of rotation, is covered by a soft shell, and is maintained at the rope by a tubular wedge member adapted to be driven into a tapering, axial passage through the sinker.

Abstract: An apparatus for anchoring a ring tensioning member in a circular container, especially a concrete tank or a concrete tube, characterized by a hemispherical anchorage body being located in a recess in the wall thickness of the container in overhung position having on its circumference at least one slot and through bores for a bracing cable. The bracing cable which has been inserted in the wall of said container and prestressed by a stretching mechanism will be anchored in said anchorage body, whereafter the recess will be covered in such a way as to be in alignment with the surface of said container.

Abstract: A safety clamp slidably mounted on a vertical safety carrier, such as a cable or rod, in proximity to a ladder is attached to a workman's belt by a pivotal actuating arm which shifts a wedge plate into clamping engagement with the safety carrier immediately under free-fall conditions encountered if the workman falls from the ladder. Instantaneous actuation of the wedge plate into clamping engagement with the safety carrier in response to the slightest pivotal movement of the actuating arm towards its closing position is provided by cam action exerted against the wedge plate by the actuating arm and by a cam member on the clamping bracket. Cam follower and guide surfaces on the upper end of the wedge plate cooperate with camming action of the actuating arm against the lower end of the wedge plate to maintain the wedge plate in an upright position of uniform contact with the safety carrier.

Abstract: A device for clamping and stopping elongated objects. The device encompasses a passage adapted to receive at least a section of an elongated object to be stopped. Two jaws are located on both sides of this passage and are associated with a mounting arrangement to displace the jaws toward and away from the section for insertion of the elongated object and to clamp and release it. The device is a cable stopper in which the jaws catch and stop a cable led through the passage.

Abstract: The present invention relates to a device for mechanically and electrically joining two cables. The device includes a wedge-shaped member and a C-member formed from resilient, spring wire.

Abstract: The attachment includes main and secondary members, both having cooperating surfaces inclined to the centerline of a cable segment to which they are attached. The main body member is lengthwise recessed to receive the cable segment. The attachment members, by reason of the cooperating surfaces, are adapted to be drawn into clamping engagement with the cable upon relative movement between the members.

Abstract: A split hinged sleeve circumscribingly engages a substantial length of stranded aluminum cable and includes a plurality of diametrically opposed wedges extending laterally from the sleeve. The sleeve is mounted within a frame having bearing surfaces contacting each of the wedges. On exerting a pulling force upon the frame, which force is resisted by the cable, the bearing surfaces act upon the respective wedges to force the sleeve to grip the cable and place the cable in tension.

Abstract: A clamping holder for busbars includes a base member having at least one projection, opening and clamping surface all located and shaped for reversible positioning of a pair of the base members with the projection on each received in the opening in the other, and with the clamping surfaces in spaced-apart facing relationship to define a part receiving aperture in which a busbar or other part is clamped and held.

Abstract: An apparatus and method for braking a mountain climber's descent while rappelling. A unique brake bar is provided which permits the use of two carabiners adjacent one another in a braking apparatus for attachment to a supporting rope thereby providing increased strength, redundancy and great braking effectiveness. Due to its novel shape comprising an elongate body provided with an oblong aperture at each end, the brake bar is adapted to readily accept the two carabiners simultaneously and, in particular, the configuration of the oblong apertures minimizes the possibility of the accidental release of the carabiners, thereby increasing the ease and safety of rappelling.

Abstract: Devices for releasably securing externally located sutures are disclosed. These devices may be utilized, for example, to maintain a retention suture in place over an abdominal incision. According to a first configuration, the devices have button-like bodies and have slots therethrough for receiving the suture. Means for securing the suture to the device pass into the slot and compress the suture against the body. According to a second construction, a bridge device is utilized wherein the sutures are received in slots on the bridge where they are secured by compression members.

Abstract: A releasable, reusable, slip-on, she-bolt type gripper device designed for telescopic reception therein or therethrough of one of the projecting end regions of a cylindrical horizontally extending tie rod as used in connection with a concrete wall form or the like and adapted to receive the reaction pull of the tie rod incident to the pouring of wet concrete between the wall form sides. The device embodies a series of circumferentially arranged chuck-forming jaws which normally grip the adjacent tie rod end region but which become released therefrom when a hollow pull rod through which said tie rod end region extends is actuated.

Abstract: A releasable, reusable, slip-on she-bolt type gripper device designed for telescopic reception therein of one end of a cylindrical horizontally extending tie rod which is associated with a concrete wall form and serves to lateral displacement of the sides of the form when the latter is in use. The device is adapted to receive the reaction pull of the tie rod when the latter is under tension as a result of the pouring of wet concrete between the form sides. Longitudinally shiftable, chuck-forming jaw segments within the forward or inner frusto-conical end section of an elongated tubular shell are spring-biased so as frictionally to engage the adjacent end of the associated tie rod and are self-energized by the longitudinal pull of the latter. A pull rod is connected in common to all of the jaw segments, projects rearwardly through the rear or outer end of the shell and, when pulled rearwardly, releases the jaw segments from the tie rod.

Abstract: A device for locking cords or the like against longitudinal movement, and including a slide received within a tapering passage in a body and movable axially relative to the body, with a cord extending along a path between a locking portion of the slide and a side wall of the tapering body passage, and with the cord being gripped by a wedging action when the cord is pulled longitudinally, and also by a spring action attained by yieldingly urging the locking portion laterally toward the side wall of the body independently of the camming action. Preferably, the slide has two such locking portions formed as two arms yieldingly urged laterally away from one another and defining two paths along which a pair of cords or the like extend at opposite sides of the slide, with each cord being gripped by both a wedging action and spring action.

Abstract: A so-called dead end anchorage assembly for use in prestressing concrete structures which comprises a frusto-conical element received in a correspondingly shaped hole in combination with a stop element fixed to a stressing element to engage one end of said frusto-conical element. Further, said hole has a frusto-conical portion and a cylindrical portion, and the narrow or leading end of said frusto-conical element extends into said cylindrical portion.

Abstract: A cord locking device including a body carrying a movable slide element having two sets of teeth at its opposite sides for releaseably gripping a pair of cords to lock them against movement in a predetermined direction, with each set of teeth including a first tooth which is relatively sharp and therefore capable of readily locally deforming a surface of the cord in a manner maximizing the tendency for automatic self locking displacement of the slide element by the cord upon longitudinal movement thereof, and including a second tooth which is less sharp and acts to take longitudinal forces exerted by the engaged cord in the ultimate locking condition in a manner protecting the sharper tooth against deformation and damage.

Abstract: A conical wedge for use in gripping a multiply rope or cable, especially concrete-reinforcing tendone, is circumferentially divided into a plurality of complementary parts each of which has, for at least part of its axial length, a deformation produced by pressing its circumferential edges towards its central axial plane so as to displace its interior surface adjacent said edges inwardly thereby increasing contact with the wires of the tendon. Preferably the region of deformation is confined to the narrow axial end of the wedge.