Abstract: An elongated chain link comprising a pair of opposing U-shaped end portions connected by a pair of parallel leg portions. The leg portions are connected to each other by a pair of crosswise tie-bars situated toward the end portions approximately equally offset from the cross-axial centerline of the link. Additional crosswise tie-bars may be added to prevent the legs of the link from collapsing together when a large side-load is applied to the link. The leg portions are substantially square in cross section, while the end portions comprise an inner portion having an arcuate inner surface and an outer portion being substantially rectangular in cross-section. The chain link is preferably made of a high-strength cast alloy steel and is especially well-suited for use in dragline drag and hoist chains.

Abstract: In a clamping lock with a housing having a deflecting element for a tension chain which runs over it, wherein a pawl is provided which is swivelable between an open position and a locking position and is pretensioned against the deflecting element and has a projecting nose by which the tension chain can be locked in the direction opposite to the tensioning direction, and with a slot on the side of the housing which extends over the entire height of the housing, through which slot the tension chain is introduced into the housing and can be fitted on the deflecting element, the nose is constructed as a shaped nose which can be introduced into the intermediate space between two longitudinal sides of a chain link of the tension chain and which, with its nose surface located in front in the direction of the locking position, constitutes an extension, substantially in a straight line, of the outer surface of a pawl leg leading to the swivel pin of the pawl and is provided with a guide groove which is located in the

Abstract: A finial-adaptive pull chain has a bead chain disposed between an adaptor and a spring assembly. The adaptor retains the terminal bead of the bead chain, has external threads on the lower portion for receiving a finial and has a gripping surface on the upper portion to facilitate hand-manipulation during attachment. The upper portion has a diameter no greater than the lower portion so that the adaptor is substantially hidden from view when a finial is fully attached and does not unduly interfering with the decorative requirements of any end-user. The spring assembly has a spring for absorbing dynamic tensile forces applied during activation and deactivation to reduce the risk that the end-user will damage the electrical components of the associated device.

Abstract: An anti-theft device includes two groups of elements, each group being composed of a plurality of elements flexibly joined to each other by offset cylindrical joints; both of the groups are flexibly joined at one end to a central link, and are fitted with a disengageable fastener at the opposite end; when used, the opposite ends of the device are fastened to each other to form a closed loop round an object that is to be secured against theft; the fastener is designed to keep the device locked in its closed loop configuration so as to prevent unauthorized breaking of the loop; when not used, the device can be folded up into a neat, compact configuration in which the two groups of elements are folded up and arranged side by side.

Abstract: A bridge-link and base replace a kiln hanger for chains. The base is welded to the kiln and is provided with translation surfaces to allow a bridge link to be mounted thereon. The bridge-link may be mounted with a chain link pre attached. The bridge link is mounted to receive almost all wear in use by comparison with the base. When a bridge-link is worn it may easily be removed and replaced.

Abstract: A hoisting link device, comprising an upper link part (2) forming a closed loop dimensioned to be hung onto a lifting hook, and a lower chain connection part (3) to be connected to an end portion of a chain hanging down therefrom. The chain connection part comprises a fork-like lower end portion with two substantially parallel shanks (3a, 3b) defining a slot (4) therebetween, a bridge portion (5) connecting the two shanks to each other, an anchoring member (6) located below said bridge portion for securely anchoring an end link of said chain. An upper or central portion (4b) of the slot communicates with an insertion opening (4d) located at one lateral side of the device. The upper portion (4b) of the slot is adapted to accommodate a centrally located support link (102) of the chain end portion (3) so as to form a shortening loop between the centrally located link and the end link of the hoisting chain.

Abstract: A chain with a seal body has a swelling seal body arranged between respective inner and outer plates provided on either side on a connecting pin. Any one of a water absorbent, an oil absorbent, and both a water and oil absorbent is contained in the base material resin of the seal body so that a swelling property is imparted to the seal body. When any one of water and oil is present around the chain, any one of the water and oil, respectively, penetrates into the clearance between the seal body and the plate to swell the seal body in the clearance part. Thus, the primary purpose of the chain with a seal body is to block a clearance between the inner and outer plates and the seal body in the chain by utilizing any one of the water absorbent, the oil absorbent, and the water and oil absorbent contained in the seal body.

Abstract: A chain link (1) consists of two loops (2a, 2b) and two sides (3a, 3b), and a post (5) welded in between the chain link's sides (3a, 3b). The post (5) has sections (7) of reduced thickness against the chain link's sides (3a, 3b) in order to produce weld grooves for welding the post (5) to the chain link's sides (3a, 3b) with a through-weld. A sacrificial anode (9) is affixed around the chain link's post (5), by means of casting, welding or clamping.

Abstract: A lifting hook with a hook body (110) and a shank (112), which has a slot (116) with an anchoring member (101) and a bridge portion (115). The lower part of a hoisting chain can be secured to the hook by coupling the end link (51) of the hoisting chain to the anchoring member (101) and inserting a supporting link (52) into the slot adjacent to the bridge portion (115) and to form a loose, non-loaded loop of the hoisting chain between an adjoining engagement link (53) and the anchored end link (51).

Abstract: A coupling link for coupling two chain end portions to each other. The link body (1) is elongated with a length corresponding to at least twice the greatest width thereof, the link body being widest at a central portion. Each opposite end portion (2, 3) of the link body is formed as a fork-like portion with a transversal anchoring pin (7) for securely anchoring an end link of the associated chain end portion, whereas the central portion (4) of the link body is provided with a central opening (12) permitting insertion of a desired chain link (102) so as to enable the formation of a non-loaded shortening loop of at least one of the two chain end portions.

Abstract: A shortening claw is linked to a chain by a passage (17) into which a slot (19) opens. The slot (19) extends up to a bent end (20) of the claw back, receives a chain link (29) and supports the front of another chain link (25).

Abstract: Devices and methods for effectively shortening the length of a chain or modifying the end hook arrangement of a chain are provided.

Abstract: The invention is a unitary component that may be substituted intermittently for portions of a jewelry rope chain. The unitary component has connecting means that promotes the integration of the component with the conventional rope chain by receiving onto the component the individual links of the rope chain in their ordinary sequence and position as those links are sequentially and positionally comprised on a conventional rope chain. The use of the component with conventional rope chain segments results in savings of precious metal and labor costs while retaining many of the flexibility and aesthetic advantages of the conventional rope chain. The preferred embodiment of the rope chain is spiral in shape but may take on various other configurations.

Abstract: According to the invention this component includes a shackle of conventional type, that is to say which has a U-shaped body of substantially uniform diameter, and includes an insert made of synthetic material overmolded on the rounded end and on the base of the side arms of the shackle, this insert including a central part of circular shape, of greater diameter than that of the body of the shackle, and side bulges demarcating, with this central part, a groove for receiving a rope.

Abstract: A sprocket chain link designed to connect opposing link ends of a handwheel sprocket chain having a detachable grasping end and a detachable bit end. The sprocket chain master link is used to facilitate replacement or length alterations an existing handwheel sprocket chain used to turn a sprocket handwheel for opening and shutting piping valves. The detachable grasping end of the sprocket chain master link is used to hold a link end portion of a standard handwheel sprocket chain link while the detachable bit end of the sprocket chain master link holds the loop end of a standard handwheel sprocket chain link. While attached to a handwheel sprocket chain, the sprocket chain master link rotates around a handwheel sprocket performing the same function as the attached standard handwheel sprocket chain links.

Abstract: In order to insure quick and reliable load acceptance and lifting allocation of a specific class when assembling load-lifting devices or lashing devices, all the parts belonging to a corresponding device are provided with a coating which is assigned in each case to a specific class and which contains an indicator color.

Abstract: The invention is a unitary component that may be substituted intermittently for portions of a jewelry rope chain. The unitary component has connecting means that promotes the integration of the component with the conventional rope chain by receiving onto the component the individual links of the rope chain in their ordinary sequence and position as those links are sequentially and positionally comprised on a conventional rope chain. The use of the component with conventional rope chain segments results in savings of precious metal and labor costs while retaining many of the flexibility and aesthetic advantages of the conventional rope chain. The preferred embodiment of the rope chain is spiral in shape but may take on various other configurations.

Abstract: A flail chain connector is provided which may be applied to an existing wood debarking apparatus or machinery for cutting vegetation. The connector is provided with integral fasteners for removable attachment of a length of flail chain to a powered rotary shaft, The connector may be removably engaged with the flail chain by moving a rink in the flail chain and one integral fastener to a first relative position and thereafter moving the link and fastener into a second relative position. The connector may be disengaged from the flail chain by relative movement of the link and fastener from the second position to the first position, and finally to the disengaged position. The connector may be removably engaged to the shaft by a second fastener through relative movements to a first and second relative positions.

Abstract: In an arrangement for connecting the end link (15) of a chain strand, made up of oval round-material links, to a structural part (16), for the purpose of preventing jamming effects between the end link (15) on the one hand and the structural part (16) and that chain link (23) of the chain strand connected to the end link (15) on the other hand, an insertion piece (1) is inserted into the clear interior (14) of the end link (15) after the end link (15) has already been connected to the respective structural part (16). In order to ensure the problem-free insertion of the insertion piece (1) into the clear interior (14) of the end link (15), the insertion piece is provided with guide recesses which exhibit more or less considerably shortened stop cheeks (4, 7) for the legs (17, 18) of the end link.

Abstract: An adapter is used to connect a conventional lamp shade finial to a pull chain for a fan or the like. The adapter has a length of bead chain, and a threaded member on one end of the chain. A larger bead prevents the threaded member from coming off the chain; and, the threaded member is sized to be received by the standard base for a lamp shade finial. A lip on the threaded member limits the insertion of the threaded member into the finial base. The other end of the length of bead chain has a connector to connect the adapter to the existing pull chain, and this may be a conventional bead chain connector.

Abstract: A bearing fitting for attaching a swing device to the crossbar of a play gym includes an axle for mounting to the crossbar, a hook including a shank, a closed loop at one end of the shank encircling the axle and an open loop at the opposite end of the shank for engaging through an eye of the swinging device. A deformable resilient cover is engaged on the hook. The cover has a pair of closely spaced apart side walls, a top wall connecting the side walls, a hole in the top wall and a large bottom opening into the space between the walls. The cover is dimensioned for engagement on the hook so that the cover snugly surrounds the open loop of the hook with the hook shank extending out through the hole in the top wall.

Abstract: A shackle-type connector for the rapid attachment of a round-linked chain to an external device, such as hydraulic rescue equipment. The connector includes a body having an attachment opening which is capable of removably receiving the device, to attach the connector thereon. The chain can be extended through a chain passage hole in the body of the connector. A holding slot communicates with the hole through a transition region. A securing nose defines a chain passage channel in the transition region. The chain can be drawn through the chain passage hole, and a link of the chain is then slid over the securing nose, through the chain passage channel and into the holding slot, whereby the surrounding links, which are rotated with respect to the link in the holding slot, cannot slide into the holding slot. Thus the securing nose secures the chain in the connector.

Abstract: A chain link for the antiskid device of a vehicle wheel, having a first end forming a closed eyelet for attachment to an adjacent chain link, and a second end forming a hook for attachment in an opening of a web or plate or arm of the antiskid device, the eyelet and hook having the equal inside width corresponding to the thickness of the web in the zone of the place of attachment, plus a slight extra dimension for adequate mobility upon the attachment.

Abstract: The invention is a unitary component that may be substituted intermittently for portions of a jewelry rope chain. The unitary component has connecting means that promotes the integration of the component with the conventional rope chain by receiving onto the component the individual links of the rope chain in their ordinary sequence and position as those links are sequentially and positionally comprised on a conventional rope chain. The use of the component with conventional rope chain segments results in savings of precious metal and labor costs while retaining many of the flexibility and aesthetic advantages of the conventional rope chain. The preferred embodiment of the rope chain is spiral in shape but may take on various other configurations.

Abstract: A cross member assembly of a tire chain comprises a flexible cable having double bushings at each of its ends. Each double bushing includes an outer bushing and an inner bushing spaced longitudinally of the cable and connected by a bridge. The outer bushing securely grips the cable, and the inner bushing embraces the cable without gripping it. Each double bushing is attached to a plate for connecting the cable to a side member of the tire chain. The plate has an opening through which the outer bushing is inserted and has a bent over tab for trapping the outer bushing between the tab and the body of plate, with the inner bushing located exteriorly of the opening and with the bridge located in the opening. Tire chains using the cross member assemblies have substantially increased endurance.

Abstract: A plate for placement between a tire chain and a tire sidewall to protect the sidewall. Lockable ties pass through plate openings and chain links to hold the plate in place. A second form of the plate utilizes locks integral with the plate and which pass through openings in a retainer which is integral with the plate. The locks are biased into retainer engagement. A further form of the protector utilizes posts which extend through a retainer with lockable ties on the posts preventing retainer disengagement.

Abstract: A split clevis which is especially suited for suspending heat transfer chain from hangers in rotary kilns is disclosed. The clevis comprises first and second arms and an opening is provided at one end of each arm for receiving an end link of a chain. In a chain assembly including the clevis, the end link connects the rest of the links in the chain to the first and second arms. A support shaft is provided on the first arm. The support shaft has a first portion, adjacent to the second end of the first arm to which it is attached. The first portion of the support shaft is received in the hanger aperture. A second, end portion of the support shaft has a reduced diameter and there is a shoulder between the first and second portions of the support shaft. An aperture is provided in the second arm for receiving the second, end portion of the support shaft.

Abstract: A link chain, in particular a flyer chain, comprising plate-like chain links joined together by means of link pins has protective surfaces of non-metallic covers extending over the width of the outer surface of the chain links.

Abstract: A plastic chain includes chain elements that are connected to one another by way of connecting shafts, rods or similar devices. The chain elements include a recess in which is received a connecting element. The connecting element can have a guide element extending therefrom for guiding the chain, and a locking element extending therefrom for restraining axial movement of the connecting shafts.

Abstract: A marine mooring swivel fitting for connection into a mooring line is a generally dumbbell-shaped element having a relatively slender elongate neck with outward enlargements at the opposite ends of the neck respectively and a mooring line attachment on at least one end of the element. In use the attachment may connect the fitting in the mooring line, the slender elongate neck being adapted laterally to receive swivelly therearound one or more conventional shackles. Such a shackle, depending on whether the swivel is at the upper or lower end of the mooring line, may be secured to a pendant made fast to a marine craft on the surface or secured to an anchoring device. The enlargements, larger than the opening in the shackle, serve to limit the longitudinal movement of the shackle on the element without limiting rotational movement of the shackle around the element.

Abstract: A line laying device used for platform mooring systems consists of a pair of claws, each with twin hooks. One claw swivels about a spindle on the other claw, where the one claw has its hooks joined together and is provided with a shoulder. A pivotal lock biased by a spring is provided with a small wheel at an end remote from a second end mounted on the one claw by means of a second spindle. The other claw is provided with a stop to limit travel of the lock. A ring to which a wire rope may be tied is carried by the other claw.

Abstract: In a support assembly for an excavating dragline bucket controlled by a hoist line and a drag line, the bucket having opposite side walls and an open forward end, a line protection device includes a sleeve for encircling the hoist line adjacent the bucket sidewalls for preventing direct contact between the hoist line and the bucket sidewalls. A sleeve also encircles the drag line adjacent the point of attachment between the drag line and the bucket forward end for preventing direct contact between the drag line and excavating material received by the bucket.

Abstract: A single length, wire-formed latch is pivotally attached to the hook of the chain and is so configured as to blockingly span the mouth of the chain-receiving slot of the hook when the latch is in its closed position. By grasping opposite limbs of the latch disposed on opposite sides of the hook, the latch may be pulled back against the resistive tension in the limbs to open the slot and allow the ingress and egress of the chain. One illustrated embodiment utilizes a pair of spaced mounting holes in the hook body which receive corresponding inturned, free ends of the limbs, while a second embodiment utilizes a single mounting hole in the hook body to receive one of the free ends of the limbs, the other limb having its free end extending across and bearing against an exposed, offset fulcrum surface on the exterior of the hook body to resiliently stress the limbs when the latch is pulled back into its open position.

Abstract: A stud link for a tire chain is provided. The stud link includes a link body that has at least one attachment opening for further links of the chain. Longitudinal surfaces of the link body form a tire contact surface, and also form a wear surface beyond which at least one profiled element projects. At least a portion of the profiled element extends at an angle to a longitudinal central plane of the stud link.

Abstract: One piece, molded, snap-fit roller chain cap of polymer material can be removably affixed to roller chain. The cap includes a pair of legs which, when affixed to a link of the chain, straddle the side plates thereof. Each of the plates and its associated leg have interlock portions. In the preferred form, the legs extend slightly below the bottom surfaces of the plates when the legs and plates are interlocked.

Abstract: The tightener comprises a scissor clamp having first and second arms pivotally connected at their upper ends. At their lower ends, the arms are pivotally connected with the ends of a loop of chain that encircles a pair of semi-circular steel shells encircling a pipeline. The rod of a cylinder is pivotally connected to move the front arm toward the rear arm. The cylinder is positioned to operate generally perpendicularly relative to the arms.

Abstract: An adjustable and removable chandelier chain cover formed from a portion of flexible fabric material encircling the chandelier chain having first and second engagement edges so that engaging edges so that the engaging edges when pressed together form a connectable and flexible joint for the cover around the chandelier chain. The fastening means may be strips of fabric, some carrying a plurality of hook elements and others carrying a plurality of cooperating loop elements. The length of the cover may be adjusted by gathering the cover if its length exceeds the length of the chain to accommodate and adjust to the length of the shorter chain length and extending the cover to a less gathered or ungathered condition when the chain length is longer.

Abstract: In a preferably edge-hardened or case-hardened stud link for tire chains, to increase the link surface a plurality of troughs (10) which are open on only two sides is arranged on the side faces (8, 9) of the ground-facing link part (1). The troughs (10) arranged in the region of the side faces (8, 9) can be supplemented by troughs (13) designed to resemble blind holes, which are arranged in the region of the contact face (11) and are open on only one side and which form chambers for receiving highly abrasive rock grains exerting a wear-inhibiting effect.

Abstract: A lever-operated hoist chain equipped with a cargo chain slip-out preventive mechanism. A slip-out preventive member linked to the unloaded side end part of a link chain in a hoist chain is made of a metal block excelling in impact resistance, and has a width greater than the interval between both side plates of the main body frame. Therefore, whether the load applied on the cargo lifting hook is large or small, if the let-off of the link chain unexpectedly exceeds the limit and the free end part side is excessively drawn out to the load side having the hook, the slip-out preventive member abuts against the outer circumference of the both side plates of the main body frame, and securely blocks the slip-out of the link chain free end part, so that the safety of the work is guaranteed.

Abstract: A tow hitch system comprising a tow bar to be secured to a towing and to a towed vehicle. the towing vehicle includes spaced openings adjacent to the point where the tow bar is secured. There is an anchor point on the tow bar. A chain received at the anchor point. Safety catches at each end of the chain engage the spaced openings. Each safety catch comprises a central limb to be received in an opening. Side limbs extend from each end of the central limb to contact opposed sides of an area of the towing vehicle adjacent the point where the tow bar is secured to maintain the catch in position. The system is easy to make and very easy to use yet safe in use.

Abstract: A lifting plate for chains. A simple plate with three separate openings. A center opening has a rounded shape, is high on the plate and has a narrow slot extending down the plate centerline to form a balloon-like outline. The other two smaller openings have wide upper portions with narrow slots extending downward and are located in a balanced configuration on either side of the lower slot of the larger hole. The upper parts of the smaller holes are sized too small to permit the chain end hooks to freely pass through, but they are located closed enough to the edge of the plate to permit the hooks to be moved through the holes by twisting them through. The three holed configuration permits creating double chain slings with different lengths of chain in each leg and storing the excess chain between the holes.

Abstract: A sidebar is provided for a trenching chain. The sidebar has an inner edge which slides along a boom of a trenching machine, when the trenching chain is in use. The sidebar is induction hardened through a portion thereof extending from the inner edge, for increased resistance to wear due to friction.

Abstract: A cargo box door swing limit apparatus includes a flexible elongate member and attachment points at intervals along the member so that the apparatus can be used with most of the various trailer latch arrangements.

Abstract: The invention is called a "Chainbar" because it may be quickly and easily adjusted to have the characteristics of a flexible chain and/or that of a rigid bar; and may be easily folded into any size rectangular solid of equal volume. It consists of a series of interconnected links, which are flexible like a chain, but have means for restricting the movement between the links, to form a rigid bar. If the Chainbar is in the form of a flexible chain, and is passed through a tube which may be less than one link long, and has proper activating tabs, the movement between links will be sequentially restricted to form a rigid bar, adjustable in length in one link increments. The Chainbar has ubiquitous uses. It may anchored at one end and have a device attached to the other end, that may be extended out and away from the anchored end, such as a mirror, microphone, light source, etc. It may be used as folding handles or legs in folding, compact items such as tables, tripods, luggage carriers, etc.

Abstract: A chain mesh for easy installation comprises a plurality of running lengths of chain. In one embodiment a plurality of vertical running lengths are positioned in parallel spaced relationship. A plurality of substantially horizontal running lengths are then positioned closely adjacent the plurality of vertical running lengths, and then the points of crossing are interconnected by connecting links therebetween. Each connecting link is normally open, and then closed after being installed between a respective vertical link and a close horizontal link. The connecting links permit a flexibility between the vertical and the horizontal chains, but substantially retain the cross parallel chains in such relationship. This crossed relationship may have the respective plurality of chains substantially perpendicular to each other, or they may be at an oblique angle to each other.

Abstract: Two chain segments of a snow-chain are connected through elongated elements, where both ends of an element each exhibit an open slot in which a link of a chain segment is introduced. Thereafter, the slots are pressed shut until the chain links are at least formlocked, or even forcelocked therein. The method enables one to make the connection elements out of the same material as the one used for the chain segments, and to temper them together with the latter. Futhermore, the method can easily be performed by robots.

Abstract: An anchoring system for semisubmersible drill rigs is described which includes a wire rope-chain cable anchor line and in which system components co-operate to convey the junction of the wire rope and chain cable smoothly over a fairlead sheave. The connector joining the anchor line has a narrow end in which the rope is rigidly retained, a large end at which a chain end link is pivotally retained, and a radially symmetric, generally concave surface extending between the two connector ends. The outer surface of the connector is shaped to seat against the central hub of the fairlead sheave in a predetermined orientation in which a limited fixed bend angle is formed between the connector and the wire rope. The geometry of the connector naturally biases the connector to seat against the central hub of the fairlead sheave in the predeterminted orientation during hauling in of the anchor line.

Abstract: The chain for pressing a plurality of annular segments against a pipeline includes a plurality of links which are interconnected by pivot pins. At least some of the pivot pins are provided with eccentrics which are disposed within the inner links so that upon turning of a pivot pin using a suitable tool, the tension on the chain can be adjusted. Nuts are rigidly secured at the ends of the pivot pins carrying the eccentrics to facilitate turning of these pivot pins.

Abstract: A sweepline roller-stopper connects a sweepline to a bottom trawl while stopping lateral movement of rollers along the sweepline. In a preferred embodiment, the roller-stopper includes a tubular body member having a large washer welded to an end and a tang welded to a side. A bolt passing through the body member fixes the position of the roller-stopper on the sweepline chain. The roller (or a spacer) abuts the washer, which resists the lateral forces exerted by the roller. In another embodiment, a ring having a tang freely rotates about the body member, while the body member is fixed to the sweepline chain. The roller-stopper is rugged, resists wear, and prevents the trawl net from becoming tangled with the sweepline.

Abstract: A mechanism for joining a chain end to a chain link utilizes a sliding link connected to a first link of the chain. The sliding link can be disengaged only by displacing it onto the straight portion of the first link and moving it forwardly to a second position. For connection, the sliding link is moved about the straight portion to a third position and is then moved upon engagement of a second chain link by an opposite displacement back to the locking position. Thus locking and unlocking is achieved only by two specific movements of the sliding link. Inadvertent unlocking is prevented by the shape and position of the sliding link.