Abstract: A tension fastener for securing elongated implements to a backpack or other device. The fastener comprises a base that has a bar for attaching it to a strap, a hook disposed on the top surface of the base near one of its ends, and two parallel channels for adjustably receiving and securing a cord. The fastener also comprises a cover having a bar mounted across one end and an aperture extending through its sides on the other end. There is a cord threaded through the aperture in the cover and secured in the receiving and securing means in the base to connect the cover to the base. An implement is secured to the fastener by placing the implement on the top surface of the base, placing the cover over the implement, sliding the bar of the cover over the hook on the base, and tightening the cord until the desired tension is achieved. This fastener is easily operated using only one hand and securely keeps the implement attached to the backpack.

Abstract: A gripper rapier provision for weaving machines with a fixed gripper rapier body has a hook and a gripping face on the inside of the hook. A hinged clip suspended from the fixed gripper rapier body, with a gripping face thereon, works together with the gripping face of the hook to grip a weft thread taken by the gripper rapier provision. A mechanism is provided in front of the extremity of the gap, formed by the gripping face of the hinged clip and the gripping face of the hook, for preventing the weft thread from sliding to the extremity of the gap. It consists of a bar provided on the gripping face of the hook of the gripper rapier body working together with a hole in the hinged clip, or a bar running through the extremity of the hook of the gripper rapier body working together with a hole in the hook of the gripper rapier body, or a bar provided on the hinged clip working together with a hole in the hook of the gripper rapier body.

Abstract: The thread clamp has cooperating clamping sections with elevations (2) and depressions (3) which extend transverse to the laying-in direction of the thread (4) to be held firmly by the thread clamp. When the clamp is closed, a free space (5) is in each case provided between the elevations (2) and depressions (3) for the reception of a thread (4), and the elevations (2) have an edge (8) for holding back the thread. Through the provision of a free space the thread is exposed to a kinking action and through the edge to a notching action, the cooperation of which ensures a secure holding for the thread.

Abstract: A releasable retention assembly includes an elongated flexible member, a retention member and a lock mechanism. The flexible member has opposite end portions and a length sufficient for wrapping at least once about an utility pole to retain a cover in place on the utility pole. The retention member is secured to one opposite end portion of the flexible member and defines a slot through which the other opposite end portion of the flexible member can extend. The lock mechanism includes a latch element mounted to the retention member for undergoing pivotal movement between angularly displaced latched and unlatched positions relative to the other opposite end portion of the flexible member extending through the slot of the retention member.

Abstract: An aerial cable spacer is provided with a cable retainer. The cable retainer includes a cable retaining arm. A mid portion of the cable retaining arm includes a fulcrum point. The fulcrum point engages and exerts a force on the cable as the cable retaining arm bends to a closed position. In the closed position, the bent arm maintains a force on the cable.

Abstract: A heavy duty clamp for cables or wires, and the like, said clamp having increased strength and resistance to distortion or breakage. Two overlying clamp plates, or segments, are held against relative movement by one of the plates having a shoulder member that engages with a portion of the other plate. The plates contain a split, tubular gripping member and the plates have increased longitudinal strength by having extended ends of the plates to provide protection against shearing forces created by the split tubular gripping member against the adjacent ends of the clamp plates.

Abstract: A safety cord-pull apparatus has a top portion and a bottom portion which include raised waves to secure control cords from a blind. A razor blade molded into the cord-pull apparatus cuts the control cords in the event a child or small pet becomes entangled within the control cords. An alternate cord-pull apparatus is also provided which has a circular housing through which the control cords are disposed. The control cords are cut by a sharpened edge in a cap on the housing or by a sharpened washer located inside the housing. The cord-pull apparatus also includes a pull cord that hangs below the control cord-pull apparatus to operate a blind. The method for assembling the cord-pull apparatus includes placing control cords into chutes and over raised waves, folding the top portion of the cord-pull apparatus unto the bottom portion of the cord-pull apparatus, adjusting the control cords level with regards to the blind, and cutting the control cords.

Abstract: A strapping apparatus for strapping, clamping together or holding together different objects includes a strapping body and a strapping means. The strapping body is a solid body formed with at least one pair of slots or bores extending angularly to each other and extending straight through the strapping body. The strapping means is a rope, a wire or a band having an eye, or locking sling, at one end thereof and a free rope end at the opposite end. The eye of the strapping means extends through a slot of the pair of slots or bores, whereas the free rope end is introduced through the second slot or bore and is drawn underneath the eye as seen in a strapping direction.

Abstract: A fastener for releasably clamping cords which includes a housing having a bore therein and a movable locking arm selectively movable from an unlocked to a locked position. The housing and the locking arm are provided with securing protrusions for securing a cord disposed in the bore and are arranged so that as the cord is pulled away from the housing the locking arm is urged or biased into the locked position.

Abstract: A power line insulator clamp for clamping a power line to the top of a power line-holding insulator which comprises first and second clamping members pivotally hinged together by a hinge connection. The first clamping member has a first section configured to extend from the hinge connection across the top of the insulator so as to overlay a power line groove on the top of the insulator, and a second section configured to extend transversely of the first section for engaging a tie wire groove on the insulator. The second clamping member has a third section configured to extend from the hinge connection transversely of the first section for engaging the tie wire groove on the insulator. The hinge connection is located to one side of the clamp so as to not interfere with the insulator or a power line extended across the insulator. An actuator is coupled to the first and second clamping members for opening and closing the clamp.

Abstract: A safety cord-pull apparatus having a top portion and a bottom portion which include raised waves to secure control cords from a blind. A razor blade molded into the cord-pull apparatus cuts the control cords in the event a child or small pet becomes entangled within the control cords. An alternate cord-pull apparatus is also provided which has a circular housing through which the control cords are disposed. The control cords are cut by a sharpened edge in a cap on the housing or by a sharpened washer located inside the housing. The cord-pull apparatus also includes a pull cord that hangs below the control cord-pull apparatus to operate a blind.

Abstract: A cable locking device for use with a flexible cable, the device including a handle member and a trigger member that pivot about a pivot axis. The trigger member forms a channel that extends through and perpendicular to the pivot axis and the handle member forms two other channels, one on either side of the trigger member channel, all of the channels concentric when the device is in an open position. One end of the cable is securable to the handle member and the other end can be fed through the channels, the cable being moved in either direction through the channels to increase or decrease the length of the cable forming a locking loop. The apparatus can be moved from the open position to a locked position thereby misaligning the trigger member channel and the handle member channels to clamp the cable so as to limit movement of the cable through the channels. Once in a locked position, the handle and trigger member can be secured.

Abstract: To provide a wire end retainer capable of retaining and positioning a collected end portion 11 of a wire bundle during a wire arranging operation. A retainer main body 300 for accommodating the collected end portion 11 and an engaging plate 400 slidably fittable into the retainer main body 300 are provided. The retainer main body 300 is formed with an insertion hole 311, and the engaging plate 400 is formed with a tapered hole 430. The holes 310 and 430 communicate with each other inside the retainer main body 300. By pulling the engaging plate 400 after the collected end portion 11 is inserted through the insertion hole 310, the collected end portion 11 is tightly held between opposite faces 431, 432 of the tapered hole 430.

Abstract: A clamp for a line includes a body having a first portion for engaging the line and a keeper having a second portion for engaging the line. A pivoting assembly is coupled to the body and the keeper for pivotally coupling the keeper and the body, and includes a shaft and a shaft support pivotally receiving the shaft. The shaft has a longitudinal axis and pivots about the longitudinal axis. The clamp also includes a torsional spring coupled to the pivoting assembly for biasing the keeper second portion away from the body first portion. Further, the clamp includes a control device in the form of U-bolts, coupled to the body and the keeper, for controlling the angular position of the keeper relative to the body.

Abstract: A spring-urged clamp is fixed to an apparatus having a rope-started internal combustion engine. The rope for starting the engine passes through the clamp. The clamp is spring-urged to a closed position, and the jaws of the clamp have teeth angled so that the rope will move easily for starting the engine; but, if the engine attempt to re-coil the rope, the jaws of the clamp will grip the rope and prevent return motion. The clamp has release handles so the rope can be released to be recoiled after the engine has started.

Abstract: The present invention relates to scissors-type clamps and clamping assemblies.

Abstract: A boat anchoring apparatus according to the invention has an elongate rod with a planar end piece attached at one end thereof for driving vertically into the sand or soil on a beach or waterfront. The rod is driven into the beach using a driving device having a weighted closed end with hollow tube for placement over the rod and having an elongate aperture along the length of the tube with a securing pin for attachment to the rod for pulling the rod out of the soil. Attached to the driving device is a pawl actuating mechanism for securing a line from the boat to said pawl when the rod is vertically in the soil and one end of the driving device is slidingly secured over the vertical rod locking at 90 degrees detaining forward tilt of buried rod and maximizing horizontal direction of vector forces.

Abstract: A retrieval device is described that facilitates lifting of a submerged weight by action of the forward motion of an associated watercraft connected to the weight by a rope. The rope is releasably attached to the device by a guide member on an elongated rigid frame. A locking member is also provided, to enable sliding movement of the rope in a forward direction, and to grip and hold the rope against rearward motion. Powered motion of the watercraft through the water provides sufficient force to pull the rope forwardly through the device. A top end of the locking member is attached to a net supported flotation device. The flotation device also serves to hold the locking member in an inoperative, open condition during forward motion of the watercraft and forward sliding motion of the rope therethrough. Once the weight is pulled to the vicinity of the device, forward motion of the watercraft is halted. The locking member then functions to prevent the weight from pulling the rope back downwardly.

Abstract: A cable holder for relieving strain on the current-supply cable of a portable handheld electrically-operated work apparatus such as a lawn mower or brushcutter. The cable holder includes a chamber fixed to the apparatus and a closure piece which is pivotally journalled on the chamber. The closure piece and a wall of the chamber conjointly define a latch for holding a segment of the cable. In its at-rest position, the closure piece blocks access to the receptacle for the cable segment to be clamped with the receptacle being defined by the chamber. The cable segment held by the cable holder is part of a cable loop of an extension cable for supplying current to the work apparatus from a remote location. The cable segment is inserted into the receptacle by pushing the cable segment into the chamber thereby causing the closure piece to pivot into its release position. Thereafter, the closure piece is returned to its at-rest position, which is now effectively a clamping position.

Abstract: A clasp of for a folded cord includes two portions which make to form a clasp body thereby capturing the folded cord therebetween. The portions include gripping teeth for defining a tortious path for the cord.

Abstract: A cable management apparatus is used in conjunction with a wall panel system having an internal space. The apparatus comprises a plate with spaced apart retainer members extending outward from the plane of the plate. Each retainer member defines at least a partial enclosure sufficient to prevent cables placed therein from slipping out laterally. The plate is fastened to the wall panel system at a desired location within the interior space to hold and separate cables.

Abstract: A rope clamp has a base and a pair of caps hingedly connected to opposite sides of the base. A longitudinally extending, rope-receiving groove is formed in each side of the base, and a similar groove is formed in each cap so that a pair of longitudinally extending, rope-receiving cylindrical bores are formed between the base and caps when the caps are closed. Upstanding spikes are positioned in each groove so that a rope in a bore is engaged by the spikes in the groove formed in the base when the caps are opened, and is further engaged by the spikes in the caps when the caps are closed. Each cap is independently hingedly mounted to the base so that one cap may be open when the other cap is closed. A catch member is secured to the base, and has teeth formed in free ends that extend in opposite directions relative to the base. Complementally formed teeth are formed in an outer surface of each cap, and these teeth engage one another when the caps are closed.

Abstract: An adjustable rope lock including a body of material having converging passageways extending therethrough with the passageways terminating at one edge of the body in a joined, merged passageway and terminating at an opposite edge of the body in spaced relation with the rope being threaded through the passageways with the two ends of the rope extending outwardly from the merged passageway at one edge of the body. The merged passageway from which the free ends of the rope extend is generally elliptical in shape although the specific configuration can vary with the ropes being positioned one above the other with one rope supporting a load and forming a taut rope segment. The other rope is the adjustable rope and forms a pull rope segment which may be pulled freely to take up slack, maintain or increase tension.

Abstract: This invention is directed toward a clamp with a hasp for fastening a cord or rope. The fastening means is a hinged component of the clamp which folds upon itself and is provided with locking means to maitain it in the folded position.

Abstract: A system for splicing rods to connect a shear wall (12) to a concrete foundation (6). The system includes a hold down device (2) coupling a first rod (4) extending upwardly from the foundation with a second rod (8) suspended downwardly from the top (10) of the shear wall. The hold down device includes a body member (14) having a rod support (22) disposed on one side of the rods and two pairs of arms (32, 34) through which the rods extend. A cam element (54, 56) is disposed within the body member for positioning the rods within the body member. A securing bolt (18) extends through the rod support for securely retaining the cam element in position.

Abstract: A rope clamp that quickly joins together ropes and eliminates the need for knots. The clamp has two elongate main parts that are hingedly connected together. Each part has rows of transversely aligned teeth that engage diametrically opposite sides of a pair of ropes held by the clamp when the clamp is brought into sandwiching relation to the ropes. The clamp is held closed by a latch and catch construction having more than one position of engagement, and a push button provides quick release of the latch and catch when it is intended to free the ropes. An insert member, also having transversely disposed teeth, is added to the clamp when ropes of smaller diameter are yoked together.

Abstract: A jiffy sure grip line holder is provided and consists of a spring for biasing a handle end of a lever that has an end of a clothes line tied thereto away from a handle end of another lever so that the jaw ends of the two levers will come together to grip an adjustable end of the clothes line therebetween.

Abstract: A gripping device for selectively locking and releasing a flexible member, such as a rope, which may be moved over a guide surface, comprises a lever which may be swung about an axis and which is mounted in a frame. An engaging member is swingably mounted on the lever, and by means of an operating handle on which an eccentric cooperating with the lever is mounted, the lever may be moved between a locking position (FIG. 1) and a releasing position (FIG. 2). By movement of the operating handle in a direction towards and beyond the locking position a force-transmitting projection formed on the operating handle may be brought into direct engagement with an abutment surface on the engaging member, whereby a particularly strong and quick locking of the flexible member may be performed.

Abstract: A rope tie-down clamp apparatus is provided for quickly and easily tightening and securing a rope between two points. The rope is formed with a loop at one end, and the end of the rope is secured to the housing of the clamping apparatus. A passage is provided through the housing for the length of rope, and the clamping cam is mounted for movement in the housing from a first position engaging the rope in the passageway to a second position out of engagement with the rope. The clamping cam may be manually moved out of engagement with the rope to facilitate adjustment of the rope length and the loop formed by the rope and the housing of the clamping apparatus.

Abstract: A hose clamp for clamping a swivel hose in a fuel dispensing installation. The hose clamp includes a breakable portion by which the hose clamp is connected to a retrieving cable. When sufficient force is placed on the cable, the hose clamp will break away from the cable thereby releasing the hose from the dispensing installation.

Abstract: A device for connecting and tensioning two wires. The device includes two operating members or blocks which are movable back and forth relative to each other in a substantially longitudinal direction. The operating members have gripping portions which coact with the wires to tension the wires upon reciprocal movement of the members. In one embodiment the wires are tensioned in one direction of movement of the members relative to each other and in another embodiment the wires are tensioned in both directions of movement of the members relative to each other.

Abstract: A clamp apparatus which can releasably grip an elongate element includes first and second jaw members supported for relative movement between gripping and release positions. The first jaw member has thereon first and second surface portions and a recess therebetween, the first and second surface portions facing in a first direction toward the second jaw member and being spaced from each other in a second direction which is perpendicular to the first direction. The second jaw has thereon a projection which extends toward the first jaw, the projection being aligned with and having a width in the second direction which is less than the width in the second direction of the recess in the first jaw member.

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

Abstract: A clothesline pole having a hollow to portion in which is pivotally mounted an alligator type clamp with jaw portions upright and which portion is slotted to receive the clothesline and lock it to the pole. It is held locked by a spring normally holding the jaws in clamped position. The handle portions of the clamp are accessible from the outside of the pole through a slot therein.

Abstract: A clamp is provided for securely holding rope, cable and similar material in a fixed position, comprising:(a) first and second clamping members of which at least one is movable towards and away from the other between clamping and releasing positions in a swinging movement about a pivot point;(b) the first clamping member having an opening therethrough for reception of a length of rope material to be held in a fixed position and having side walls on opposite sides thereof;(c) the length of rope material engaging the side wall on one side of the opening in the first clamping member;(d) the second clamping member having a clamping extension projecting into the opening through the first clamping member when the first and second clamping members are in the clamping position, and spaced away from the opening when the members are in the releasing position;(e) the extension when the second clamping member is in the clamping position being spaced from the side wall of the opening engaging the length of rope material a

Abstract: A device for retaining two cords, which may be opposite ends of a single cord, against longitudinal movement in a predetermined direction, and including an actuating member connected to a body for pivotal movement between locking and released positions, and two separate locking members carried by the actuating member for pivotal movement therewith and engaging the two cords respectively to retain them against movement. Each of the locking members is also free for pivotal movement relative to the actuating member and relative to the other locking member in a manner automatically tightening the grip on the corresponding cord in response to the application of longitudinal pulling force to the cord. The actuating member and locking members are connected to the body of the device by a pivot pin which extends between two side walls of the body and through a tubular mounting portion of the actuating member and is preferably retained in assembled position by a snap detent arrangement.

Abstract: A clamping device comprises a holder in which an actuation arm is movable in a longitudinal directions. A fixed clamping jaw is carried by the holder and a movable clamping jaw is arranged within the holder opposite to the fixed clamping jaw and it is supported by at least two longitudinally spaced lever members which have a first pivotal connection to the holder, a second pivotal connection to the movable clamping jaw and a third pivotal connection to the actuator arm. An actuator is connected to the arm to move it backwardly and forwardly for opening and closing the jaws. The pivotal connecting points of the levers are chosen so that the pivotal points are disposed at substantially right angles to each other. The pivot pins are cylindrical hinge pins and the line between the pivotal connection of the lever to the jaw and to the fixed holder makes an angle of 45.degree. to the horizontal so that a larger distance between the points of support is possible.

Abstract: A rope or cable connection is made between first and second lengths of rope or cable by a clamp device including an upper jaw member and a lower jaw member which are hinged together. The upper jaw member defines an open ended engagement slot through which the lengths of cable or rope extend. The jaw members may be pivoted apart to an open position, or alternatively, pivoted together to a closed position. When in the closed position, the open end of the slot is bridged by the lower jaw member and the lengths of rope or cable are compressed within the slot. A latch means holds the upper and lower jaw members in their closed position while permitting quick attachment or disengagement of the clamp device without the need for tools. Slot inserts may also be provided with the clamp device which are dimensioned to be received within the slot. The slot inserts permit cable or rope lengths of different diameters to be clamped together.

Abstract: A securing device is disclosed for use in conjunction with a rope or like article to secure the positioning thereof. The securing device is coarsely adjustable to establish the maximum permissible spacing between a pair of clamping plates when the device is in an open position. The clamping plates are configured to allow dual sections of rope to be received through the securing device between the plates while the device is in the open position, with the rope being engageable with the plates at a plurality of points when in the closed position. A camming unit is mounted adjacent to the outside surface of one plate, with the camming unit having a cam surface, that acts in conjunction with the adjacent plate, and an actuating lever, the positioning of which establishes the open and closed positions of the lever and device.

Abstract: A locking device for selectively locking and releasing a rope or a similar elongated, flexible element comprises a channel-shaped frame and a clamping member which is provided with a handle and is mounted swingably within the frame. The clamping member cooperates with a rope abutment surface defined by the bottom wall so as to clamp the rope, when the clamping member is swung in one direction by means of the handle, and so as to release the rope when the clamping member is swung in the opposite direction. In order to render it possible to arrange the handle in a convenient, protected position within the channel-shaped frame in the rope releasing as well as in the rope locking or clamping position of the clamping member, the clamping member and the handle are separate parts, each of which are independently swingable about a common axis, and the clamping member and the handle may be releasably interconnected by means of releasable coupling means, which may comprise a locking pawl.

Abstract: Described is an apparatus for releasably clamping a cable or line (6), comprising a housing (1), a clamping lever (3) which is mounted rotatably thereon (at 7) and two clamping surfaces (2, 8) of which the first is arranged on the housing (1) and the second is arranged on the clamping lever (3) and between which the cable or line (6) passes. The cable is also passed around at least one direction-changing means (8-10), the clamping lever (3) being designed for a lever ratio b/a such that at most the coefficient of friction .mu. is attained at the frictional location.

Abstract: A secure safety anchor that is easy to utilize is provided for attachment to structural angle irons in marine installations and the like. The anchor includes a vise grips with movable and stationary jaws, and a head welded to the stationary jaw. A flange surface portion of the head extends substantially perpendicular to an imaginary line between the vise grips jaws when in the clamping position, and a number of force concentrating set screws pass through the flange surface at an angle of about 15 degrees with respect to the imaginary line. A through-extending opening in the head provides for attachment of a safety belt clasp.

Abstract: A cable, wire or rope clamping device including a pair of plates having surfaces defining serpentine grooves to receive and retain segments of the article to be clamped. The plates are moveable between an open position for insertion of the segments and a closed position with the surfaces in closely spaced face-to-face relation to retain the segments within the grooves.In one form the clamping device is formed of nonconductive material and is useable to connect or splice electrical conductors.

Abstract: A connection unit, which may be undone, for rope ends and more particularly ropes in the form of belts for driving systems, rope conveyors or ropes for lifting loads has, as part of a preferred example, a plate with two rope keepers supported on pins and which keep the rope ends in position thereon by way of stops. These rope end keepers or takeup parts are designed so that they may be turned and locked in position so that, dependent on the direction of turning, the rope may be taken up and made shorter or let off and made longer. The plate, as part of a further example of the invention, has guide parts for positively guiding the rope end and furthermore there is a guiding structure, designed to match the form of a driving sheave so that it may be run thereover.

Abstract: A guy wire protector comprises an elongated tube having a pair of registering free edges to receive a guy wire. A generally tubular clip is integral with and extends from the tube interior wall snugly receives and retainingly engages the guy wire.

Abstract: A hose clamp, which may be completely made of plastic, comprises two clamping stirrups which can be anchored in clamping position by interaction of a tongue on one stirrup and a toothed section of the other stirrup. The hose to be clamped can either extend through coaxial openings of the clamping stirrups or be introduced between the stirrups from the side. In the first case, the clamp can only be removed over a free end of the hose while, in the second case, the clamp can be positioned at any point along the hose as desired.

Abstract: A cam cleat includes a pair of spring loaded cams or pawls rotatably mounted on a base. The cams have specially formed teeth and open and close in opposite rotary directions to releasably grip a line therebetween. The cams or pawls are rotatably mounted on a shaft and the case by a plurality of rotatable bearings to substantially reduce the effort required in opening and closing the cams and to reduce the spring force maintained on the cams, resulting in substantial advantages in performance. An alternate single cam version is also disclosed.

Abstract: A sail line stopper is provided for controlling the rate of movement of a sailing line prior to or subsequent to the locking of a line in a fixed position. The sail sheet stopper has a base with a channel formed therethrough. A plurality of closely spaced links are mounted for pivotal movement in the base and each of the links has an opening with the line openings forming a channel through which the line to be controlled is positioned. A handle is coupled to the links for controlling the pivotal movement of the links in the base. In a first position the handle aligns the openings allowing the line to move freely through the channel, and in a second position the openings are out of alignment thereby restricting the size of the channel through which the line moves to lock the line in the channel.

Abstract: A locking device for cords of a sun-blind or the like having an upper beam and one or more webs of sun-blinding material connected thereto. The cords extend through the internal space of the upper beam and leave it for opening or closing the sun-blind. The locking device consists of a U-shaped portion in the legs of which a tumbler is pivotably supported at the one end. The free end of the tumbler is biased in the direction of the bottom of the U-shaped portion. The cords extend between the free end of the tumbler and the bottom of the U-shaped portion and are locked when they are clamped between said free end and bottom resulting from the bias force.

Abstract: A rope clamp, in which the rope (7) is guided through rope openings (13) of several clamping members (11) which can be pivoted parallel to one another, secures the rope (7) automatically. To enable the holding force to be increased and the clamping effect to be accurately adjusted, the rope openings (13) have a considerable length and the clamping members (11) are inclined, in their open position which permits a free passage of the rope, against the rope pulling direction (10). Preferably, plane clamping plates of approximately the same thickness as the rope are used. The cylindrical rope openings are made obliquely in the clamping plates and, in the inclined open position of these, are aligned with one another along the same axis. A hand lever (12) can be moulded onto the front clamping plate. Furthermore, a spring can be provided, which presses on the rear clamping plate in the rope pulling direction and, at the same time, serves to detain the lever in the open position.