Abstract: A sail line stopper is provided for controlling the hoisting and trimming of sails in which the line may be released under heavy load without abrading the line so released. A U-shaped base member having legs with a pivot pin mounted therein is adapted to be anchored on a sailboat. A cam mechanism includes an inner element having a handle attached thereto which is eccentrically mounted for pivotal movement around the pivot pin. A movable outer element is positioned for pivotal movement and a rotational movement on the eccentrically mounted inner element. One or more springs are mounted between the inner and outer elements of the cam mechanism which are acted on when relative movement takes place between the elements. The spring is compressed when the handle is pivoted placing the outer member in locking engagement with the line in the load direction which locking action is increased with increasing load; while allowing the outer member to rotate or float over the line in the other direction.

Abstract: A device for retaining a cord or other elongated flexible element against relative longitudinal movement including a first member to which an actuating member is mounted for relative pivotal movement between locking and released positions, and a locking member carried by the actuating member for swinging movement therewith, and for swinging movement relative thereto, to clamp a cord or cords against the first member, with the latter preferably containing a recess having an essentially curving wall against which the locking member presses the elongated element in locking condition, and with the curving wall preferably being defined by a series of teeth following a curving pattern. The device may lock two spaced cords or cord ends, which may be directed to properly located positions between the gripping members by reception within spaced locating recesses in the locking member and by reception at opposite sides of a locating projection carried by the first mentioned member.

Abstract: A device for arresting the fall of a climber ascending or descending along a vertically disposed rail, such as a guide rail secured to a ladder, including a support member having an opening therein for receiving the rail therethrough, a clamping member supported on the support member and engageable with a vertical surface of the rail in clamping relation therewith, at least one connecting link pivotally connected to the support member, and an actuating lever pivotally connected to the connecting link, the actuating lever having one end thereof engageable with the clamping member and an opposite end thereof connectable to the climber where upon a sudden downward movement of the climber, as when the climber may be caused to fall, the connecting end of the actuating lever shall be caused to pivot downwardly, forcing the clamping member and the support member into clamping engagement with the rail, thereby arresting the fall of the climber.

Abstract: A strain relief device, especially for power tools, has a pin upon which is pivotally mounted a clamping member with a spirally curved rough clamping surface which coacts with a second clamping surface. An electrical line is inserted between these surfaces and the clamping member is swung thereby applying a clamping force to the electrical line. When strains are applied to the line, the clamping member provides an increased clamping force by swiveling so that a section of the member of larger diameter presses the line against the second clamping surface. A lock mechanism is also provided to prevent the electrical line from being pushed further into the housing.

Abstract: A device for locking one or more cords or other flexible elements against longitudinal movement, and including two members interconnected for relative pivotal movement between locking and released positions, with one of the members having a portion which is slightly laterally deflectible upon assembly of the device to permit movement of a pivot lug into a pivot recess to form the pivotal connection between the members, and with the other member having an interlocking projection which in the locking relative position of the members blocks lateral movement of the deflectible portion of the first member to prevent disassembly of the parts in that locking position.

Abstract: A cable lock assembly includes first and second members pivotally interconnected and defining a cable receiving slot. The members have interlocking means defining a closed position to securely grip the cable between the members. In one version, the second member has a locking cleat pivoted thereon and the locking cleat has sharp edges that bite into the cable. In another version, the interlocking means includes a pair of projections on one member and two spaced pairs of recesses on the other member that define two locked positions for the members.

Abstract: A safety clamp appliance is disclosed formed of a cable or rope housing having opposed walls and a generally U-shaped cross-section, the housing interior being adapted to receive a safety rope, and a brake lever having a pivot point, a brake surface and a handle for attachment to a workman's belt. The brake lever is pivotally mounted in the housing. An actuating spring is provided for spring loading the brake lever, thereby maintaining a constant pressure by the brake surface on the rope. The actuating spring is provided with a quick release for converting the safety clamp appliance from a spring loaded mode to a non-spring loaded mode.

Abstract: A channel-shape sweep line retainer extends along the leading front edge of an elevating fin, with the open side of the retainer facing the trailing rear edge of the fin. Extending across the fin at the open side of the retainer is a bar mounted on the fin for movement toward and away from the retainer, but normally locked in its forward position by a pair of laterally spaced arms extending rearwardly away from the bar with their front ends engaging it. The rear ends of the arms are pivotally connected to the fin so that when arm-positioning spring means between the arms and connected to them are pulled rearwardly, the front ends of the arms will be swung inwardly toward each other out of engagement with the bar, whereupon the bar can be retracted to open the retainer for admission or release of a sweep line.

Abstract: The subject of the invention is a sheet cleat, especially for sailboats, whose essential elements are movable gripping jaws which form a gripping gap between them, and whose surface parts cooperating with the sheet consist of rollers having a serration and having a rotation-symmetrical envelope surface. The rollers are freely rotatable about axes which are parallel to the plane of movement of the gripping jaws. The sheet is pressed into the gripping gap with rotation and spreading apart of the rollers, and there it is held fast positively and frictionally, but is easily releasable. In the direction of the tension on the sheet under the usual stress, a locking action takes place; in the opposite direction the sheet can be easily retightened. Reduction of wear and tear on the sheet is the additional effect. A plurality of roller pairs can also be present. An adjustable bearing surface and a likewise adjustable guiding means are provided for the sheet as possible accessory devices.

Abstract: A tensioning device for maintaining tension in ropes, cables and the like is disclosed. The device includes a boss member over which one of the lines passes and which changes the direction of the line and a pair of pivoting gripping members which are designed to allow one of the lines to pass freely in one direction but to prohibit motion of the line in the opposite direction. The device may be employed to tension lines such as tent lines, clotheslines and the like.

Abstract: This box type belt adjuster includes a box open at least at one end so as to form a passage therein for a belt or other webbing around a cam which latter is supported on a transverse shaft in the box. A snap-on cap covers the inner end of the passage and encloses a space for a yoke engaging the cam for turning it in the passage. The height of the passage and the distance between the risers of the cam are so related that when the cam is turned to move the risers toward the opposite top and bottom of the passage the clearance is slightly less than the thickness of the belt or webbing whereby when the cam is so turned the belt is jammed between the top and bottom of the passage and the risers of the cam. A manipulating extension extends from the lever to the outside of the cap for turning the cam in a direction to increase the clearance between the risers and the respective sides of the passage.

Abstract: An upright vacuum cleaner having an elongated handle and a cord reel biased to retract the electrical cord has a cord guiding and locking device comprising a housing having two internal cavities open at both the top and bottom thereof and opening into each other. One of the cavities is adapted to clamp onto the handle above the cord reel, and the other cavity includes a locking member pivotably mounted in an opening formed in a wall thereof. The locking member has a pair of legs disposed angularly to one another, one leg has a through slot to allow the cord to pass therethrough when the plane of the slot is substantially perpendicular to the cord but is sized to frictionally grip the cord when the plane of the slot is not substantially perpendicular thereto. The other leg is accessible at the opening for depression by an operator and a stop member restrains the first leg and the slot to substantial perpendicularity when the cord is being extended from the reel and when the second leg is depressed.

Abstract: In a block for a rope or sheet: a pulley over which the rope moves, an eccentric cam which is pivotable to selectively clamp or release the rope against the pulley and a pivotably lever to which the cam is connected such that motion of the lever pivots the cam between its clamping and releasing position; bearing means to enable pivoting of the lever away from the cam clamping position; a spring to at least return the cam to its clamping position.

Abstract: A two-way adjustable cam cleat is provided for use such as on sailboats having a fixed cam jaw rotatably mounted to a base opposite a movable cam jaw which is adapted with the base to vary the nip between the cams. Mounted on the arcuate periphery of each cam is a unique configuration of jaw teeth which enables the cams to engage with a line disposed therebetween to prevent movement in opposing axial directions.

Abstract: The disclosure is directed to a clamp for flexible tube and more particularly a clamp for surgical use. The clamp is formed of plastic material and has a pair of clamping members connected by a flexible hinge. The flexible hinge biases the clamping members open and a cam with at least one elongated handle closes the clamping members about a flexible tube or vessel. The clamp may be locked by a screw threaded through the cam and which is advanceable into contact with one clamping member. The clamping members are provided with beveled edges to define narrow convex clamping surfaces for the concentrated distribution of the clamping force, and the surfaces have serrations to prevent slippage of the tube from the grasp of the clamp. The clamping members may be curved to facilitate insertion of the clamp into inaccessible body areas during surgical applications.

Abstract: An inexpensive adjustable pinch clamp or valve for use on flexible conduits carrying a fluid having an adjustable locking cam to maintain a selected closure of the conduit.

Abstract: A clamping device is formed of nestable body members pivotally hinged together, forming an inner space between them, housing and slidably supporting an elongated body such as a cable, bar, tube or the like in pivotally closed position, the large member having side walls one of which is elongated and the other shortened and forming an open space for receiving said elongated body and for mounting of said clamping device about any point thereon, one body member pivotally supporting a clamping means comprising an inner portion cam-shaped and pivotally bearing against and gripping said elongated body, an outwardly extending trigger arm for actuation by a chain worn about or attached as a safety device to the waist of a climber, ascending or descending a ladder or the like. Ascent of the climber allows him to draw the clamping device slidingly upon the elongated body as he ascends or descends the ladder, pivotally pulling the cam element out of gripping engagement of the elongated body.

Abstract: This invention relates to a clamping device slidably supported upon an elongated body such as a cable, bar, tube or the like, in a sliding cylinder of selected size to accommodate the elongated body, the device having a pivotally supported cam-like surface to lockingly engage and clamp the elongated body in fixed clamped position upon the elongated body, and includes means for locking the clamping cam out of engagement with the elongated body, whereby ascent of a climber allows the clamping device to be drawn upward or downward as the climber ascends or descends a ladder or the like holding the clamping cam disengaged but easily released from its locking means for quick clamping engagement of the elongated body by any quick pull, by misstep and for safe support of the climber in clamping engagement of said elongated body, rope or the like.

Abstract: A wire connector wherein wires to be connected are threaded into a sleeve from opposite ends thereof. A jamming cam is mounted on a resilient pin inside the sleeve which, when tension is applied to the wires to withdraw them from the sleeve, rotates into jamming engagement with the wires.

Abstract: In a box, open at least at one end, is a drum cam, into each end of which is secured a stub shaft from the hub of a hand lever; the hub of a hand lever; the hubs being journaled in opposite side walls of the box; the hand levers being outside the box for turning the cam manually to release the webbing; cross-sectionally the cam is a substantially diagonal cam, the opposite projections or apices of which are rounded and spaced apart to a distance equal to or greater than the height of the box; smooth gripping surfaces adjacent the respective projections are diagonally spaced apart to leave a clearance less than the thickness of the webbing to be clamping against the top and bottom of the box when tension on the webbing around the cam urges the projections toward said top and bottom; a light multiple ribbon spring between an end wall of the box and the cam urges the webbing against the surface of the cam with light pressure; a pin spaced from the cam anchors the end of the webbing, so that the webbing extends f

Abstract: An electrical connector comprising a binding post intended to be fixed to a suitable supporting surface such as the wall of a loudspeaker enclosure, and including an outwardly extending portion provided with a camming surface disposed spirally relative to the axis of the binding post, and an operating cap of dielectric material, desirably having at least slight elastic deformability, and provided with a conductor-receiving bore extending therethrough and disposed eccentrically relative to the axis of the binding post and cap. The lower body portion of the cap has formed therein a downwardly open cavity for partially receiving the operative portions of the binding post, whereby twisting the cap through a limited angle, substantially less than 180.degree., serves to force the bared conductor within the cap into tight conductive relation with the cammed surface of the binding post.

Abstract: A clamp and related method provides for a stable fluid flow rate through a flexible tubing. The clamp comprises a body having an anvil and a tube-constricting cam that cooperates with the anvil to pinch together diametrically opposed sections of the tubing to provide a reduced flow passageway. The cross-sectional area of this passageway, and hence the fluid flow rate, is varied by rotating the cam to change the transverse extent of the pinched off portions. The reduced flow passageway is constrained at each adjustment of the clap to prevent variations in flow rate due to displacement of the material of the tubing wall.

Abstract: A clamp for wire rope, rods and tubes and a load fastening apparatus are provided including an elongated strand of given length, a clamp means adjustably positioned on said elongated strand intermediate its length, fastening means on one end of said strand spaced from the clamp means, said clamp engaging the strand selectively on movement of the strand in one direction relatively thereto and releasing the strand on movement of the strand in the opposite direction, a hollow screw member surrounding the strand and bearing on the clamp and nut means acting on said hollow screw, one of said nut and screw acting on a load to adjust the clamp position relative to said load and the fastening means.

Abstract: A base member of a push pin is formed by casting or molding, and a pin is inserted pointed end first into a hole in the base member and forced through the base member until the end opposite thereof lies below the surface of the base member. The material of the base member is then flowed over the end of the pin, by mechanical or heat techniques, to form a substantially complete layer over the end of the pin within the base member. The pins preferably extend at an acute angle to a flat surface of the base member. The push pin may have pins extending from opposite surfaces thereof, a loop shaped projection adapted to be affixed to a wire, or a hinge separating the base member into a hook portion and a portion carrying one or more pins. The push pin may have a contoured base member to facilitate the affixing of a picture wire to a hook formed on the base member.

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. The wedge plate is shiftably mounted in a clamping bracket in such a way that its upward closing movement against a safety carrier is assisted by the frictional force of the stationary safety carrier on an elongated clamping side of the wedge plate. 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 between the wedge plate and a cam member on the clamping bracket.

Abstract: An improvement on the terminal block construction of U.S. Pat. No. 3,042,896. A wedging member having a supporting shaft that extends through a hole in a support plate is provided with an enlarged portion at the end of the supporting shaft of slightly greater diameter than the diameter of the hole in the support plate. This permits the wedging member to be retained in place, but permits its removal and insertion by snap-out, snap-in action of the enlargement through the hole.

Abstract: Restraining device intends to protect the workman from falling while working at higher environments. The device consists of a fixed cable stretched along the area of interest. A gripping clamp which slides along the cable is attached permanently to the workman's belt. Clamp consists of a pivotal arm which, when a downward load is applied at the point of attachment of the belt, exerts a frictional force on the cable, sufficient to immediately terminate workman's fall.