Abstract: A finger protector to prevent lacerations to the fingers of a surgeon during suturing. A kit comprising the finger protector and a method of using it during surgery.

Abstract: The technology relates to a telescoping support structure which can be suspended between two objects. The telescoping support structure uses projections between adjacent tubular sections in order to prevent the adjacent tubular sections from falling away from one another. Although the telescoping support structure may be utilized in various different environments and circumstances, it may be of particular usefulness in the field of high-altitude ballooning. For instance, when used in a balloon system, the telescoping support structure may be suspended between two objects such as an upper payload structure and a lower payload structure. As another example, the telescoping support structure may be suspended between a balloon envelope and a payload which, in some examples, may include an upper and a lower payload structure.

Abstract: An outer-yarn brake (14) for a cording or cabling machine with at least one workstation comprising a bobbin rack (2) for holding at least one feed bobbin (4), a spindle (12) for the rotation of a yarn (6) withdrawn from the feed bobbin (4) around a bobbin pot associated with the spindle (12), and a yarn-guide channel (10) for guiding the yarn (6) received via a free end-portion (8) of the yarn-guide channel (10) to the spindle (12). The outer-yarn brake (14) can be arranged in the yarn running direction of the withdrawn yarn (6) between the feed bobbin (4) and the yarn-guide channel (10) to guide through the withdrawn yarn (6) and comprises a clamping portion for defined braking of the running yarn (6). The outer-yarn brake (14) can be coupled to the free end-portion (8) in order to form a yarn input for the yarn-guide channel (10).

Abstract: A yarn producing apparatus is an apparatus for producing CNT (carbon nanotube) yarn from CNT fibers while causing the CNT fibers to run. The yarn producing apparatus includes an aggregating unit that aggregates the CNT fibers, and a twisting and winding device that twists the CNT fibers aggregated by the aggregating unit.

Abstract: An engagement pin of a fishing reel for engaging a worm shaft of the fishing reel, the worm shaft having intersecting spiral grooves, the engagement pin includes a shaft portion and an engagement portion. The shaft portion has an end. The engagement portion is integrally and turnably disposed on the end of the shaft portion and is configured to engage the intersecting spiral grooves. At least the engagement portion is formed from synthetic resin.

Abstract: Disclosed is a self-construction system of a wireless sensor network, and a method for self-construction of a wireless sensor network using the same. Also disclosed is a method for self-construction of a cluster tree structure-based wireless sensor network (WSN). The present invention can connect devices distributed densely in a wide area to a network while maintaining the advantages of a conventional tree-structured network, such as the reduction of time required for network construction, traffic by the exchange of control command messages, and a load for a routing path search, and thus can provide a WSN having an improved self-construction performance.

Abstract: A band heater assembly for heating an object includes a band heater that extends around at least a portion of a perimeter of the object. The band heater includes a cable and a band. The cable includes a resistive element, a first cable end and a second cable end. The resistive element generates thermal energy based on a current received from a power source. The first cable end and the second cable end are connected to respective ends of the band heater assembly. The band is connected to the cable and transfers a first portion of the thermal energy to an exterior surface of the object. At least a portion of the cable is exposed from the band heater to contact the exterior surface when the band heater assembly is connected to the object.

Abstract: The disclosure relates to a device and method for introducing a force into tension members made of fiber-reinforced plastic flat strip lamella. The device can include at least one clamping element, which is arranged on the tension member and has at least one contact face with the tension member. At least one rigid sleeve can be arranged around the at least one clamping element and the tension member and thereby exerts a clamping pressure on the tension member via the clamping element. The clamping element can be formed of plastic material having a modulus of elasticity ranging between 1000 and 5000 MPa, bending tensile strength of ?25 MPa and pressure resistance of ?25 MPa.

Abstract: The invention is a restrainer for a spool (10) of thread to prevent the thread (13) from being freely drawn off of the spool (10). It comprises a resilient element (12) that extends around the circumference of the outer surface (14) of the spool (10) so that the thread (13) being drawn from the spool (10) must pass between the outer surface of the spool (10) at the inner surface of the resilient element (12) there by impeding the free removal of the thread (13). The invention prevents excessive thread being jerked from the spool.

Abstract: A fence wire stretching device is provided having a square shape made up of five leg portions, three of which form three of the sides of the square. The fourth side of the square has a proximal leg portion and a distal leg portion that are pivotally attached together. The distal leg portion swings outward at an angle from the proximal leg portion so that the wire clamp mechanism is in an open position, and may then be pivoted back to be coaxial with the proximal leg so that the wire clamp mechanism is in a closed position. A vehicle attachment means is located at a first corner of the square, and a wire clamp mechanism is located at second corner of the square opposite the vehicle attachment means. A wire spool holding rod extends centrally across the square between a third corner and a fourth corner of the device, and is openably attached to the square so that a spool of fence wire may be slipped over the wire spool holding rod.

Abstract: A yarn tension control device controls tension in a running yarn. The tension control device includes a housing having a yarn guiding inlet for receiving running yarn at an unwinding tension from a yarn supply source, and a yarn guiding outlet for guiding running yarn exiting the housing at a delivery tension. First and second opposing yarn engaging surfaces are disposed between the inlet and the outlet, and are adapted to frictionally engage opposite sides of the running yarn along a path of yarn travel through the housing. The first and second yarn engaging surfaces define a respective plurality of sequentially spaced friction rolls. A biasing assembly resiliently urges the first and second yarn engaging surfaces together. The opposing friction rolls cooperate to form a number of sequentially spaced nip points adapted to adjust yarn delivery tension in response to stress variations in running yarn entering the housing.

Abstract: A housing has major and minor surfaces creating major and minor chambers. A motor secured within the minor chamber has a drive shaft extending upwardly through the minor surface. A power source is within the major chamber. Electrical components control the motor.

Abstract: An apparatus for tensioning strips of metal as the metal strips are rewound comprises a board having a top surface defining a groove and a tray having opposed side portions and opposed end portions and disposed in the groove. Each of the side portions of the tray has an upturned flange. A hook pad having a plurality of upwardly extending hooks is disposed in the tray between the flanges. The hook pad and tray are removably fastened the to the board.

Abstract: An insertion mechanism brings an insert yarn into association with a base yarn in an automatic winder. The insertion mechanism comprises an insertion guide for delivering the insert yarn to a predetermined location on the winder, and a tensioning device for maintaining tension on the insert yarn. In another aspect, an automatic winder is configured or modified for direct insertion. In contrast to conventional creel frame insertion, the direct insertion technique of the invention avoids the need for a separate step of back-winding, and allows the automatic doffing feature on the winder to be enabled.

Abstract: An actuator (A) for a component (2), comprising at least one defined stop position, in particular to a brake component actuator of a yarn brake (B), for a selective braking of a running yarn (Y) which actuator has a drive element (D) for linear or rotational adjustment of the component (2). Said actuator is provided with at least one stop device (C). The stop device (C) consists of an additional body (Z), supported in a displaceable manner on a motion damping device (F, G, H). The actuator (A) in the yarn brake is a reversible motor, suitably a magneto-electric motor (M) for rotational movement. An additional body (Z), supported in a displaceable manner on a motion damping device, is provided in each stop device, at which the yarn brake is to stop. During a linear adjustment of the component (2), the mass (m1) of the additional body (Z) matches the mass (m) of the displaced parts.

Abstract: A device for the selective braking of a running yarn including a controlled yarn brake having at least two brake elements between which the yarn runs, which brake elements can be elastically pressed against each other with an adjustable force that determines the braking effect. The device also includes a first actuator for the temporary nullification of the braking effect, a control device to which the first actuator is connected, and a device for adjusting the brake force. The adjustment device includes a second actuator, which is also connected to a control device.

Abstract: A yarn braking device, in particular a double plate brake for textile yarns running from bobbin creels, with two pairs of brake plates through which the yarn passes and whose top and bottom plates are to be pressed together adjustably in order to tension the yarn passing through, with a two-armed plate lever disposed beneath the pair of brake plates and able from that location to influence pressure loads each of the pairs of plates by means of a respective one of the lever arms, and with a pressure adjusting device acting on the plate lever.

Abstract: A weft thread clamp for a weft thread presenting lever is positively actuated to selectively open or close the clamp and thereby release or hold the weft thread respectively. To achieve this, a second clamp element is movable or deflectable relative to a first clamp element of the clamp. The movable second clamp element may be directly embodied as an actuator, or may be driven by an actuating motion provided by an actuator located remotely from the clamp on the lever. In the latter case, a motion transmission arrangement such as a sheathed push-pull cable or a rod linkage operatively connects the actuator to the movable second clamp element. The actuator may be a piezoelectric, electromagnetic, hybrid pneumatic-electric, or hybrid hydraulic-electric device, or an electric motor. The loom control unit is connected to the actuator for providing control signals thereto.

Abstract: In a device for guiding and braking a yarn, a yarn brake comprises braking elements that are pressed flexibly against each other and act on the yarn in a pinch zone. The yarn brake is arranged in the yarn running path between a yarn feeder and a yarn receiver. A pneumatic threader also is provided which includes at least one air and yarn guide element that is disposed in the yarn brake and surrounds the pinch zone without contact. The air and yarn guide element comprising a receiving end, a delivery end and a guide channel provided therebetween, which is open towards the braking elements and from which the yarn is introduced into the pinch zone. The yarn is conveyed into the guide channel by means of an air flow past the pinch zone to the yarn receiver and is introduced into the pinch zone under the action of a produced drawing force.

Abstract: Yarn feeding device for projectile or gripper looms, having a drum (D) to store the yarn (Y), an inclined annular deflection surface (G) at the free front end of the drum (D), a circumferentially continuous and yielding conical braking surface (B) at the wider end of a hollow conical brake carrier (C), pressed in contact with the deflection surface (G). The brake carrier (C) is supported at its smaller end onto a stationary part (P) and the braking surface (B) is adjustable with respect to the deflection surface (G), according to the yarn unwinding speed, so as to compensate for any tension increase in the yarn (Y), and an annular counterdeflection surface (H) for the yarn (Y), downstream of the deflection surface (G) and coaxial to the drum (D). The inside diameter of the counterdeflection surface (H) is smaller than the outside diameter of the deflection surface (G).

Abstract: The invention is a filament tensioning device for use on a spool of a type having filament coiled around a cylindrical barrel bounded by flanges at each end of the barrel. The device, constructed in accordance with the present invention, includes a belt or strip of elastic material such as neoprene. The elastic strip is formed into a ring and end portions adjacent the long ends of the strip are bent transverse to the outer surface of the ring forming a radially extending tab. The two end portions are attached and preferably stitched together using two seams, thereby forming a passage therebetween which extends from the strip ends through the length of the tab into the interior of the ring.In use, the filament tensioning device is placed over the barrel of the spool between the flanges and elastically contracts about and circumscribes the coiled filament.

Abstract: A yarn brake has two brake disks, retained with axial play in a support or bearing device, which are retained against one another via resiliently yielding device, such as permanent magnets. The brake disks are rotatably supported in the support or bearing device. Via an oscillatory motion generator, such as an electromagnet, mechanical or other device, the support or bearing means is set into mechanical oscillation that is essentially axial to the brake disks or in other words parallel to the axis of rotation defined by the rotation of the brake disks. The brake disks are carried along only slightly or not at all by the support or bearing device and the oscillatory motion generator.

Abstract: A thread tightener has a hollow body (49) in which is arranged a thread channel (4), as well as a tightening body (10) which may be pressed against the outlet part (49) of the thread channel (4). The hollow body (40) contains a first hollow section (41) and a second hollow section (42) which is rotatively mounted on the first hollow section (41). The thread tightener further has a device (9) for controlling the force with which the tightening body (10) is pressed against the outlet surface (47) of the hollow body (40). This control device (9) has a two-armed lever (11). One of the urns (12) of said lever carries the tightening body (10). The other level arm (13) is coupled by a spring (19) to a slide (30) for adjusting the compression force of the tightening body (10). This slide (30) is coupled by a gear to the rotary hollow insert (42 ). This thread tightener allows the braking force to be very finely adjusted and may have very small dimensions.

Abstract: An apparatus for the variable braking of traveling threads, wires, or the like, in particular for use in connection with the introduction of the filling thread in looms, in which the thread (F) passes between two brake parts which can be brought into spring application against each other, one of which forms a spring element and the other an abutment, one of the brake parts being movable in order to vary the braking. In order to improve the efficiency, it is provided that the abutment is developed as a substantially cylindrical body (2) which is acted on rotatably by the spring element (1), having a first partial section (4, 5) which is substantially circular in cross section and a second partial section (8) which has at least one circumferential region (6, 7) of reduced cross section, the abutment being seated on the shaft (1) of an electric motor which is developed as stepping motor (9).

Abstract: A weft feeder for gripper or projectile looms allows an operator promptly to restore the continuity of a weft yarn from a yarn feed spool to members for weft insertion into a loom shed, in case of weft yarn breakage or interruption. Downstream of a first yarn guide outlet, there are mounted a double-leaf brake, a separating element, and a second downstream yarn guide eyelet. The separating element is controlled by an actuator so as to separate two brake leaves of the double-leaf brake and to form a duct to guide the weft yarn from the first eyelet to the second eyelet.

Abstract: Twine wrapping apparatus for a round baler having a bale forming chamber with a generally transverse crop infeed opening. The apparatus is mounted forward of the opening and includes a twine arm for dispensing twine into the chamber to wrap cylindrical packages of crop material formed therein. Coupling means provide for swinging movement of the arm through a predetermined path during at least a portion of which the arm dispenses twine in the vicinity of the opening. The twine arm includes a clamp having one member affixed to the outer end of the twine arm and a second member that is moveable relative to the first member and is urged thereagainst by a spring assembly to provide a clamping force for holding the twine. The spring assembly includes a spring maintained in compression.

Abstract: In a thread brake, which comprises at least one brake element (B) adapted to be moved relative to a counter brake element (B.sub.G), said brake elements acting on the thread in braking positions and being adapted to be displaced up to and into a threading position in which the thread can be moved undecelerated through the thread brake, and in the case of which a brake element adjustment device is provided, the threading position of the thread brake (F.sub.K, F.sub.L, F'.sub.L) can be established with the aid of a drive means (A) of said adjustment device, said thread brake having provided therein air guide surfaces (L), which, in the threading position, define an air guide passage used for automatic, pneumatic threading of the thread (Y) by means of a stream of air.

Abstract: The thread braking device comprises a pair of braking members, which are arranged symmetrically in respect to the path of the thread. Each of the braking members has a spring member. Between these spring members a line-shaped, vertically arranged braking zone is defined. For braking, the spring members are pivoted on rockers towards the thread path. Due to this movement as well as due to the vertical arrangement of the spring members, the deposition of contaminations in the braking zone is avoided. The elasticity of the spring members reduces the danger of damage in the presence of thickened thread sections.

Abstract: A wire tensioning device having a guide for taking up an advancing wire having slack and a brake for applying a braking force to the guides. In a wire insulating system, a wire from a supply reel or spool is passed to a take-up reel or spool, through intervening components, which accumulate, tension and apply insulation to the advancing wire. The wire is first passed from the supply reel to an accumulating device in the form of a vertical accumulator or a flipper payout. From there it is passed through the device of the present invention having a plurality of rotatable sheaves or pulleys about which the advancing wire is trained. A braking force is applied to one of the sheaves by an air brake to apply a tensioning force. From the tensioning device, the wire is fed through an insulation-applying crosshead device and then on to a take-up reel or spool.

Abstract: A device for braking traveling threads, wires or the like, in particular for use for the entry of the filling thread in looms (8), having a plurality of brake parts (B, B') which are under spring action with respect to each other and between which the thread (5) travels; in order to obtain optimal use, a cyclic change in the brake force is derived from the rotation by motor drive of one of the brake parts (B, B', C, C').

Abstract: A heat sensor which detects the heat generated from sliding frictional contact with a traveling yarn in a textile machine and generates control signals therefrom for the controlling of a yarn winding operation. A temperature-sensitive electric resistor, especially a thin-layer resistor or a film thermometer, serves as the heat sensor. The heat sensor is connected e.g. via a signal converter to control devices, e.g. to a controllable yarn brake and/or to a drive motor for yarn take-up. When the measured temperature rises above a limit value, the braking force of the yarn brake can be first lowered and then the speed of the drive motor can be reduced.

Abstract: A thread tension adjusting apparatus, used in a sewing machine, adjusts tension of a supplied thread by adjusting a thread holding force. The apparatus is provided on a thread supply path running from a thread source to a thread processing section such as a needle and a looper. The thread tension adjusting apparatus comprises a pair of members respectively having portions opposed to each other. At least one of the members is a piezoelectric actuator for changing a distance between the portions when being driven, whereby to adjust a thread holding force.

Abstract: The yarn brake (1) having electromagnets (12, 12') and a brake lamella (2) has, on that side thereof that is remote from the yarn (3), a segmented layer (5) of soft ferromagnetic material. The layer (5) is effective to strengthen the magnetic attraction. Substantially platelike segments (55, 56) of the layer (5) are disposed in accordance with the operating ranges of the discrete electromagnets (12, 12') and have connections (60, 560) to one another and/or to the brake lamella (2). The connections (60) between the segments (55) are flexible. Because of the segmentation of the attraction-increasing segmented layer (5), the flexibility of the brake lamella (2) remains substantially unimpaired. The yarn brake can be released by electromagnets (12') disposed on one side of the segmented layer (5). By means of a blower (28) having nozzles (29) distributed over the length of the brake gap, fly can be removed from the braking surfaces when the yarn brake (1 ) is released periodically.

Abstract: Twine wrapping apparatus for a round baler having a bale forming chamber with a generally transverse crop infeed opening. The apparatus is mounted forward of the opening and includes a twine arm for dispensing twine into the chamber to wrap bales formed therein. Coupling means provide for swinging movement of the arm through a predetermined path during at least a portion of which the arm dispenses twine in the vicinity of the opening. The twine arm includes a clamp having one member affixed to the outer end of the twine arm and a second member that is moveable relative to the first member and is urged thereagainst to provide a clamping force for holding the twine.

Abstract: A method for deploying a belt on a large conveyor belt system which extends down slope. A run of the belt is positioned at an upper position along the slope, and is engaged with a controllable brake which is configured to permit selective adjustment of the braking force which is exerted thereby on the belt. The belt is then lowered along the conveyor belt system using the weight of the run, and the rate at which the run of belt advances is controlled by selectively adjusting the braking force which is exerted by the controllable brake. The runs of belt may be lowered from adjacent high points in the conveyor belt system and spliced together where these meet in the valleys between the high points.

Abstract: A thread tension adjusting apparatus, used in a sewing machine, adjusts tension of a supplied thread by adjusting a thread holding force. The apparatus is provided on a thread supply path running from a thread source to a thread processing section such as a needle and a looper. The thread tension adjusting apparatus comprises a pair of members respectively having portions opposed to each other. At least one of the members is a piezoelectric actuator for changing a distance between the portions when being driven, whereby to adjust a thread holding force.

Abstract: A yarn brake which can be used in projectile looms and rapier looms is actuated by a stepping motor with the rotational movement of a drive shaft of the stepping motor being converted to a linear movement of the braking member of the yarn brake.

Abstract: A strand tension controller which has an elongate strand sensing lever arm having a strand guiding input end and an opposing strand guiding output end with a tension shoe positioned between the input end and the output end of the lever arm for applying tension between a range of zero and a preset maximum tension on the strand. The lever arm is pivoted adjacent the strand engaging output end pivotal movement responsive to strand tension sensed at the opposing strand engaging input end of the lever arm and for subtracting from the tension applied by the tension shoe. The tension is sensed on the strand at the input end of the lever arm. The tension shoe engages a first surface of the lever arm and the strand passes along the top surface of the lever arm from the input to the output end of the lever arm. A pressure responsive expandable fluid reservoir in the form of an air tube controls the force applied to the strand.

Abstract: A payoff system for an optical cable to be carried by a moving vehicle includes a spool containing an optical fiber, and rearwardly of the spool is a cone of energy-absorbing material such as foam rubber, carpeting, fabric and the like. The rearward end of of the cone is provided with a eyelet through which the cable is threaded, followed by a braking system consisting of a pair of flat blocks or plates, and downstream of the plates is an outlet cone or eyelet.

Abstract: A two-for-one twisting spindle, onto the feed bobbin carrier of which may be slipped concentrically at least two feed bobbins axially one above the other, from which bobbins the yarns are drawn off overhead and commonly enter the yarn inlet tube, onto which is slipped a braking device which has a slip-on member and a brake ring carried thereby, characterized in that the slip-on member is mounted on the yarn inlet tube by means of a bearing so as to be easily rotatable.

Abstract: The disclosure relates to an apparatus for generating an electric signal corresponding to thread movement in a thread brake in textile machines of different types. A transducer element (9, 21) of piezoelectric type is disposed in direct contact with an element (3, 18) included in the brake and, by the intermediary of a further element included in the brake, or directly, is in contact with that thread (13) which is to be braked and sensed, so that movements which occur in the thread (13) on braking thereof shall be transmitted to the transducer element (9, 21) and the electric signal corresponding to thread movements is impressed on a monitoring circuit for indication of whether the signal ceases during a period of time when the signal should exist. It is possible to arrest the operation of the machine upon loss of the signal.

Abstract: Wire drawn from a tensioned supply into the wire inlet to a reciprocating and oscillating shuttle of a high speed stator winding machine is frictionally restrained by a convex friction plate when the shuttle approaches the end of each of its forward strokes. The friction plate is mounted on the rearward end of the shuttle and has a wire-engaging surface spaced rearwardly of and confronting the wire inlet to the shuttle. To optimize the restraint on the wire, adjustments are provided to vary both the length of time during which the wire is engaged with the wire-engaging surface and the length of the surface so engaged.

Abstract: A yarn tensioning device having a yarn tensioning element mounted on a seat within a housing through which the yarn travels. A cap is mounted in the outlet of the housing and has a smaller opening than the size of the tensioning elements to prevent replacement or addition of elements and is secured in the housing to prevent removal. The cap has a tapered inner surface and two sequential frustoconical outer surfaces forming a juncture therebetween. The annular peripheral surface of the cap is relieved. The tensioning element is elongated and shaped to preclude rotation during operation and particularly when yarn travel stops during operation of the associated equipment.

Abstract: A weft yarn store for looms has a stationary drum (10) for storing a weft yarn supply (23) and a braking device (13) at the end of the drum. A resiliently deformable brake element (132) is movable by means of an adjusting device (131) relatively to a braking surface of the drum. The adjusting device may be an annular electromagnet 131 and is in direct operative engagement with low-inertia parts of the brake element 132. Such parts can be finger-like lamellae disposed one beside another on the outer drum periphery (10). The action of the braking device can therefore be accurately adjusted to the departing weft yarn so that the same is retarded gently at the end of picking into a loom.

Abstract: A tenser displacing device in a two-for-one twister comprising a cylindrical housing 6 inserted into a take-up tube 5 of a yarn supply package 4 placed on a stationary disk 1 of a two-for-one twister, a lower supporting member 6 secured within the housing 6, a yarn guide pipe 9 inserted into the housing 6 and movable up and down, an upper supporting member 10 secured to the yarn guide pipe, and a tenser 7 held between the lower supporting member and the upper supporting member, wherein a cam member 14 formed in the outer periphery with a cam groove 13 in engagement with a pin 21 projected into the housing 6 is provided on the yarn guide pipe 9 urged by a spring, and the housing 6 is partly provided with a magnet 22 for attracting and holding the tenser 7 at a position displaced from a yarn running area.

Abstract: A thread brake mechanism is provided which is adapted to be attached to a spindle assembly of a thread processing machine and which is characterized by a construction for use with two independent individual threads which may be fed into the spindle assembly at varying tensions and which applies respective braking forces to the individual threads depending upon the respective feeding tension thereof.

Abstract: An apparatus for preventing scatter of fly in a winder having a plurality of winding units where a yarn is unwound from a yarn feeding bobbin and is taken-up on a take-up package. A first cover member for covering the yarn feeding bobbin unwound at a winding unit and a second cover member for covering a tenser portion are provided with each winding unit.

Abstract: A creel for supplying yarns from a plurality of respective packages to a takeup machine such as a warp winder has a support defining respective supply stations carrying the yarn packages, respective stationary brake elements on the supports at the stations each having a braking surface, respective tension-sensing deflectors at the stations, and guides for directing the yarns from the respective packages over the respective braking surfaces and around the respective deflectors. Respective movable jaws movable toward and away from the respective stationary jaws can be actuated via respective springs to press against the yarns on the respective surfaces with a force capable of varying smoothly and steplessly up to a relatively high nominal level corresponding to high tension in the respective yarn. A sensor connected to the deflector responds when the tension in the yarn at the deflector drops below a predetermined low tension, typically to signal a shutdown of the takeup machine so the break can be repaired.

Abstract: A tension device for use in a two-for-one twister, in which the yarn insertion is made by means of compressed air, comprises a tubular tenser body provided with a yarn passage, a tenser disposed in the tenser body and adapted to close the yarn passage at a predetermined pressure to impart a tension to the yarn, and a tenser operating member provided on a portion of the tenser body and adapted to slide within a plane perpendicular to the yarn passage.

Abstract: A weft thread brake for shuttleless weaving machines includes two leaf springs or lamellae which rest against each other in a spring elastic manner. The thread, such as a weft thread, passes through a passage formed between the two leaf springs as the thread is being pulled off a supply reel or bobbin whereby the two leaf springs apply a braking action to the thread. In their basic position the leaf springs exert a first step of a defined braking action on the thread. Additionally, controllable members are arranged for cooperation with the leaf spring or springs to increase or decrease the pressure of the two leaf springs toward each other. Electromagnets, compression elements, or the like, are suitable for this purpose, whereby the actuation of these control members increase the braking action even to the extent of clamping the weft thread between the leaf springs if desired.