Abstract: A head immobilization device for an accident patient and a manufacturing blank of sheet material, such as cardboard, for making such a device are described. The manufacturing blank is H-shaped and provided with fold lines. The blank is folded to form the head immobilization device with a pair of triangular cylinders which extend longitudinally upward from the top surface of a head support center section on opposite sides of such section to prevent lateral movement of the head. The head immobilization device is provided with adhesive tape on the bottom surface of the center section to attach such device to a flat support such as a back-board. Ear hole slots are provided in the inner sides of the triangular cylinders to enable examination of the ears. The sides of the triangular cylinders are releasably fastened by hook and loop fasteners.

Abstract: An ultrasonic probe has a case of a substantially cylinder shape having a first axis along longitudinal direction thereof. The case has a convex wall in the vicinity of a closed end of the case. The convex wall is transparent to an ultrasonic signal radiated from the ultrasonic probe. A support cylinder having a second axis is rotatably mounted in the case. The support cylinder and the convex wall are coaxial to the second axis. An ultrasonic transducer is fixed on a base of the support cylinder. A viscous resin fills a space between the convex wall and the ultrasonic transducer. Thus, a convex lens coaxial to the second axis is formed by the convex wall and the viscous resin. The angle of the axis of the convex wall to the first axis may be chosen between zero degree to approximately 90 degrees.

Abstract: An ultrasonic transducer is provided for producing two-dimensional projection images of the interior of the body. The transducer may comprise an array of elements, acuated to produce scanning beams which are focused in the azimuthal direction and divergent in the elevation direction. The elements will, when actuated, emit fan-shaped beams which will insonify a volumetric region in front of the transducer. Echoes returning from structures within the volumetric region are acoustically integrated and projected onto a plane within the region. An image display of this plane will represent a two-dimensional projection of the volumetric region.

Abstract: Contrast agents for ultrasonic imaging comprising gas filled liposomes prepared using vacuum drying gas instillation methods, and gas filled liposomes substantially devoid of liquid in the interior thereof, are described. Methods of and apparatus for preparing such liposomes and methods for employing such liposomes in ultrasonic imaging applications are also disclosed. Also described are diagnostic kits for ultrasonic imaging which include the subject contrast agents.

Abstract: The present invention provides an apparatus that is useful in obtaining blood flow information. The device includes a carrier that, in preferred embodiments of the invention, includes either a catheter or guide wire. The device further includes at least one transducer that is capable of generating and/or receiving an ultrasonic signal that departs or is received, respectively, by the transducer at an angle to the surface of the transducer that is exposed to the blood flow. One embodiment of the apparatus employs a transducer that is capable of generating a surface acoustic wave (SAW) that, upon contact with blood, is converted into a "leaky" wave. Another embodiment of the device employs a transducer that utilizes the grating lobe effect to transmit and/or receive ultrasonic signals at an angle to the surface of the transducer that is exposed to the blood flow.

Abstract: A photo-pulse from a photo-pulse generating apparatus is branched, where one branch is radiated to an examined body and the reflected light reflected within the examined body is delayed in time in proportion to the depth from the surface of the examined body and is led to a time-analyzing reflected light measuring apparatus. In this measuring apparatus, the other branched reference photo-pulse or reference signal pulse is input as delayed by the time for which the photo-pulse reflected within the examined body returns and only the reflected light component synchronized with the entering timing of this reference light pulse is analyzed in the time and is detected. By varying the detection sensitivity of this measuring apparatus in response to the depth from the surface of the examined body, the interior can be observed.

Abstract: Methods and apparatus for eliminating the effects of electrosurgical interference on continuous, heat-based cardiac output measurements employing several procedures, including the steps of (1) supplying power via an isolation transformer and carrier frequency to a catheter-mounted heating element; (2) measuring the voltage and current on the primary side of the isolation transformer; (3) determining the voltage and current on the secondary side of the transformer on the basis of the measured primary side voltage and current; and (4) calculating the power delivered to and resistance of the catheter-mounted heater on the basis of the secondary voltage and current. A heater power waveform generated with this process will be substantially free of electrical interference due to electrosurgical devices. Then, a system transfer function may be produced via signal processing techniques which involve cross-correlating the heater power waveform with the blood temperature waveform.

Abstract: An ambulatory monitor for monitoring the action of a pacemaker and the cardiac response of a patient fitted with a pacemaker. The monitor comprises a detection electrode coupled in use to the patient for detecting pacemaker pulses and cardiac responses; an analyser connected to the detection electrode fora) analysing the relationship between the detected pacemaker impulses and cardiac responses,b) analysing the shape and timing of the cardiac responses, andc) generating corresponding data signals; and a recorder for recording the data signals.

Abstract: A single-use, disposable, elastomeric patient valve has a pair of one-way check valves disposed in the cross-piece portion thereof to create a barrier against patient infection. The check valves prevent contamination by a first patient of the reusable demand valve portion as he or she exhales into the patient valve and prevents the inhalation of possibly infected materials into the lungs, via the sampling chamber and associated tubing coupling same to the patient valve.

Abstract: A vessel is disclosed for receiving exhaled air in order to measure lung function. The vessel includes a container with two facing inlets which admit exhaled air alternatively. The container houses: either a piston which can slide in the direction of the inlets, and switches which are actuated when the position reaches the wall of the container, whereupon air is admitted through the other inlet; or, two contiguous bags to each of which air is admitted by one inlet so that they move alternately, and a switch which when actuated causes air to be admitted through the other inlet.

Abstract: In the medical diagnostic apparatus employing line-of-sight detection, eye movement and head movement of a subject are detected by eye movement detecting portion and head movement detecting portion, respectively, and images of the field of view of the subject are picked up by a TV camera. A calculating portion calculates a locus of the line-of-sight, a locus of the eye movement, the locus of the head movement, and vectors of spatial movement of the line-of-sight in response to the detected eye movement and the head movement. An image processing portion reduces the picked up image, a superimposer superimposes the images of the loci, the vector images and the images of the reduced field of view on each other, and the resulting images are displayed on a CRT display.

Abstract: A cystoscopy splash shield for use during surgery in which a large volume of human liquid is involved. The splash shield includes a rectangular shaped transparent plastic sheet with a strip of adhesive along its short edge and a hole present in the approximate middle of the sheet. The short edge of the plastic sheet is affixed to the torso of the patient by the adhesive strip. The remaining portion of the shield is draped over the groin area of the patient with overlap over and between the patient's legs. The shield is positioned so its hole is over the groin area to undergo surgery. A medical optical instrument may be inserted into the hole which is sealed around its circumference. As a result, a physician conducting surgery in the groin area is protected from any splashing fluids from the patient.

Abstract: A tool wrench for removing and replacing a needle cap from a combined needle cap and needle assembly. The tool or wrench has a generally longitudinal wrench structure defining a generally cylindrical opening having a cylindrical wall with at least one arcuate channel traversing the cylindrical wall. A method for removing a needle cap from a needle assembly that is releasably engaged to a syringe.

Abstract: A comb has a plurality of prongs each having two prong parts movable relative to one another between an open position in which hair can engage between them and a closed position in which the hair are clamped between them, a user-actuated element for moving the prong parts to one of the positions, and an automatic returning element for returning the prong part to an initial position.

Abstract: A dental flosser unit for flossing teeth includes a filament of high tensile strength terminating in thickened portions at its opposite ends. In the same described embodiments, each thickened end portion includes a ferrule enclosing and crimped to the respective filament end, and a plastic body enclosing the ferrule and the respective filament end. The filament preferably includes a plurality of threads of high tensile strength coated with a low-friction material. In another described embodiment, a plastic material is injection-molded onto each end of the filament at a temperature greater than 280.degree. C. to melt the coating and to bond directly to the threads. A further embodiment is described in which the thickened end portion is constituted of a two-part bead having complementary socket and plug formations for firmly clamping the filament.

Abstract: A power spray washing machine includes an enclosed wash cabinet positioned above a wash holding tank and a rinse holding tank. Openings are provided through a floor of the wash cabinet directly into the wash and rinse tanks, respectively. Vertical plug valves are associated with each opening to open and close the openings and control the flow of fluids therethrough. Each valve includes a first valve head moveable between a closed position in direct contact with and closing the opening and an open position out of contact with and uncovering the opening. The valve heads retain no fluid between the floor of the wash cabinet and the holding tanks when the valve head is in the closed position. By this arrangement, cross contamination of solutions between the wash and rinse holding tanks is minimized or eliminated.

Abstract: An umbrella which opens into a noteworthy enlarged expanse due to outer fabric-supporting struts being urged through sliding movement along inner fabric-supporting struts, so that the two fabrics cooperate to provide the enlarged expanse to the umbrella.

Abstract: An umbrella has an elongate shaft, a web member, and a foldable support linkage for enabling an opening of the umbrella from a collapsed storage configuration to an opened use configuration and for supporting the web in the opened configuration of the umbrella. The foldable linkage is connected to the shaft and to the web member and has a plurality of radially extending ribs angled with respect to each other. The foldable linkage also includes a plurality of elongate flexible tie members each connected at opposite ends to free ends of adjacent ones of the ribs. The tie members have central arcuate portions which are inserted into an annular pocket formed at the periphery of the web by an inwardly turned flange. The flange is stitched or otherwise connected to a main body of the web member at circumferentially spaced locations on concave sides of the central arcuate portions.

Abstract: The invention relates to a strut structure of a folding umbrella having a seamless umbrella cover, which structure makes use of an integrally molded fastener with an open groove provided on the hollow cylindrical body thereof to fix the umbrella cover on the strut. The outside diameter of the strut is slightly smaller than the hole diameter of the fastener and slightly larger than the width of the open groove and so the fastener can be directly pushed inwards from the outside to clamp the strut as well as the umbrella cover, forming a firm engagement. As a result, when the folding umbrella is closed, the umbrella cover made of a single cloth folds inwardly as well for storage.

Abstract: In the present invention, an adjustable mobility assist device is provided which has a base, means for obtaining leverage against a stationary object, and grasping means which allow the user to reach out and up while rising from a seated position. In its several embodiments, the device can be adapted for use in rising from a chair, bed, or commode. Handles are provided so that the device can also assist in walking. Arms are also included for supporting the users arms, a reading or eating tray, and the like. The device is portable and can be moved from one piece of furniture to another within the home with the user.

Abstract: A truck bed canopy is arranged to include a plurality of parallel slide rails arranged for sliding reception within side wall rail members mounted to upper top walls of vehicular truck bed side walls. A lock pin is directed through the slide rail and associated companion side wall rail member to selectively secure the components together permitting ease of assembly and disassembly of the associated truck bed canopy relative to the truck bed.

Abstract: Apparatus for preventing fragmentation of a rupture disk during pressure relieving rupture and fluid flow through the ruptured disk includes a rupture control assembly for rupturing the disk into a petal having a body and a base for retaining the petal to the rupture disk; protrusions extending from opposite sides of a housing adjacent the rupture disk for retarding motion of generally opposed edges of the petal as the petal is forced away from the ruptured disk and thereby bending the body of the petal into a channel shape; and a protuberance in general alignment with and spaced away from the base of the petal for impacting the channel-shaped body of the petal as the petal is forced away from the rupture disk and converting the kinetic energy of the petal into deformation of the channel-shaped body in order to prevent severance of the base of the petal from the rupture disk.

Abstract: An emergency shut-off device for use in the event of the breakage of pipes (2) for conveying fluids includes two adjacent valves (4) arranged in series in the pipe (2) wherein each valve (4) includes a hollow body (8) having a joint (14,12) with a predetermined breaking load for joining it to the body (8) of the other valve (2) and connectors (12,18) for connecting it to the adjacent portion of pipe (2). An obturator (24) is rotatable in the body (8) so that it can assume a shut-off position transverse the pipe (2) and an open position substantially perpendicular to its shut-off position. The obturator (24) has an engagement device (40) for engaging the obturator (24) of the other valve (4) fixing the two obturators (24) in a contiguous arrangement in their open positions, which they assume normally, and releasing the obturators (24) so that they can assume their shut-off configurations when the valves (4) move apart because the joint has been subjected to loads equal to or greater than the breaking load.

Abstract: Disclosed herein is a speed controller of a type wherein a check valve flexed depending on the flow direction of a pressurized fluid can be seated on a seat portion of a main body thereof and separated therefrom. The main body has first and second connecting portions capable of communicating with a pressurized-fluid flow channel defined in a pressurized fluid device. A needle valve mechanism is provided in continuation with a passage defined in the main body. When the pressurized fluid is introduced from the first connecting portion, the check valve is tightly fitted on a seat portion formed in the main body so as to close the passage and the second connecting portion. On the other hand, when the pressurized fluid is introduced from the second connecting portion, the check valve is separated from the seat portion so as to close the first and second connecting portions and discharge the pressurized fluid introduced from the second connecting portion into the needle valve mechanism via the passage.

Abstract: An air gap apparatus for plumbing applications such as reverse osmosis (RO) units and other systems in which reject water empties at a relatively slow rate into a drain line. The apparatus can be incorporated in an under-the-counter unit or in a countertop embodiment which eliminates umbilical connections between the RO unit and the kitchen faucet and sink drain. The apparatus has a conventional air gap to protect against back siphoning and against high velocity backflow from the drainage line. It uses a deflector wall in combination with a supplemental opening and one or more backflow restrictors to slow and shunt any backflow to atmosphere. Different styles of countertop and wall mount installations are disclosed, as well as various deflector walls and back flow devices.

Abstract: A system for containing oil in a containment tank received from a transformer bank for a hydroelectric power generating station. A capacitance proximity sensor is mounted at a predetermined height within the tank and is operative to sense the passage of an oil/water interface in close proximity to the sensor to generate an output control signal for controlling a solenoid operated valve for the tank to close the valve and prevent spillage of oil into the environment. Collected water can be drained from the tank to a point where the oil/water interface has been reduced to a predetermined height within the tank, thereby leaving adequate remaining oil containing capacity within the tank in the event of further oil discharge from a transformer.

Abstract: A pressure relief valve including a valve member movable between open and closed positions to control fluid flow. A body member is provided which receives a piston operatively connected to the valve member for operating same. The piston defines a first chamber in the valve body extending above the piston and a second chamber extending below the piston. System fluid is introduced into the chambers and the differential fluid pressure in the chambers applies a loading force to the piston, and therefore to the valve member in its closed position. When the system pressure, and therefore the pressure in the chambers, exceeds a predetermined amount the pressure in one of the chambers is vented, causing the piston to move to an open position and permit opening movement of the valve member.

Abstract: These is disclosed apparatus for monitoring the rotative position of a rotary closure member of a valve, wherein a shaft is rotatably mounted in a housing for connection to a part exterior of the housing which rotates in response to rotation of the closure member, and cam rings are assembled for rotation about the shaft through pinion gears rotatable with the shaft to cause cam surfaces about the rings to engage and activate switches in the housing.

Abstract: A pneumatic control valve system has a modulating valve and a piston. When the operator depresses the piston, pressure is communicated to a switching piston moving that piston to a switched position so that pressure is communicated to a switching outlet. The switching piston retains this switched position when the first piston is released. When the modulating valve is opened to communicate pressure to a work port, pressure is also communicated to the switching piston in order to move the switching piston back to its unswitched position whereat the switching outlet is vented. The switching piston allows the control of another function.

Abstract: A one-way valve for dispensing a fluid material from a container includes an axially extending valve body and an elastomeric sleeve stretched over the valve body in tightly fitting contact with it. A ring shaped enlargement is formed monolithically on each end of the sleeve and fits in sealed contact with reduced diameter portions at the opposite ends of the valve body. The sleeve can be assembled on the valve body in a variety of ways including mechanically expanding the sleeve and placing it on the valve body. The enlargements at the ends of the valve body have a thickness dimension in the radial direction in the range of 2 to 4 times the thickness of the sleeve between the enlargements.

Abstract: A tire inflation hose assembly for interconnecting a container of pressurized tire inflation material and a valve stem of a tire is provided. The hose assembly includes a release valve assembly for coupling to the container and for releasing the pressurized material contained therein. A flexible tube transports the released material to a nozzle which is adaptable for mating with the valve stem of the tire such that the pressurized material enters the tire when released by the release valve assembly. A pair of transverse pins secure the tube to the nozzle and the release valve assembly.

Abstract: A plumbing installation is provided which includes an outlet box, at least one water supply pipe extending into the box and a torque inhibiting connection between the pipe and a boiler drain valve positioned in the interior of the box. A compression nut is screwed over a male threaded lower shank of the boiler drain valve to compress a ferrule around the upper end of the water supply pipe. A male threaded cylindrical adapter is connected to, and extends downwardly from, the compression nut through a water supply hole in a bottom wall of the outlet box. The adapter surrounds the water supply pipe. A lock nut is screwed over the adapter and squeezes the bottom wall between the compression nut and the lock nut. When the water supply pipe is made of CPVC this installation prevents lateral movement and/or torquing of the pipe which could weaken or fracture chemical welds between a lower end of the CPVC pipe and a CPVC fitting.

Abstract: A one-way valve assembly including an axially extending valve body having an inlet end and an outlet end and with an expandable elastomeric sleeve tightly fitted about the valve body. A cover member encloses the elastomeric sleeve and valve body and presses the sleeve into fluid-tight contact with the valve body at two axially spaced locations. Further, the cover member is fitted tightly onto the valve body adjacent its inlet end. A flowable substance flows from a source through the valve body passing to the outlet and cannot flow back to the source.

Abstract: An eccentric disk valve has return springs and indicators located outside of the valve housing. The valve disk is directly seated on the housing and the valve seat of the housing is described as a section of a right circular cone whose central axis is aligned with the axis of flow through the valve housing.

Abstract: A stream selector for a process analyzer. The stream selector includes a valve module having two block valves and a bleed valve. In a first mode, the block valves are closed and the bleed valve is open. In a second mode, the block valves are open and the bleed valve is closed. In a third mode, all of the valves are open, thus ensuring that the module is completely purged. A stream-selection valve manifold is made by joining two or more valve modules side by side to form a common outlet and a common passageway, thus ensuring that the manifold is completely purged. The stream selector also provides a single block-and-bleed valve module having a disposal passageway which establishes fluid communication between a vent compartment and an external area suitable for the safe disposal of sample fluids and compressed gas contained in the valve module.

Abstract: A pressure compensating hydraulic directional valve comprising: a body provided with a movable slide; a passage through the body for connecting a distribution chamber associated with the slide to working orifices, the distribution chamber being selectively connectable to an admission orifice by the slide when moved; a load sensing line channel combined with means for selecting the maximum pressure selected from the pressure in the channel and the pressure of the fluid in the valve; and pressure compensating means placed in the passage and responsive to the difference between the pressure in the passage and the pressure in the channel to generate a fixed pressure drop in the pressurized fluid flowing through the passage towards the working orifices, the pressure compensating means being combined with the maximum pressure selecting means in such a manner that if the pressure in the channel is greater than or equal to the pressure of the fluid from the slide, then no communication exists between the passage and

Abstract: A ball valve has two mutually orthogonal diametrical internal passages in one of which is mounted a pressure relief valve assembly for resisting sudden pressure flucutations in fluid flow during movement of the ball valve from an open to a closed position. The assembly has an adjustable biasing force to calibrate the valve.

Abstract: The present invention provides a fluid controlling apparatus that has a remote signal transmitter that sends a signal to a signal receiver that has power supplied to it by a power supply. The signal receiver now generates a new signal to a valve controller which controls a solenoid operated valve that controls fluid flow from an inlet to an outlet. A first embodiment controls fluid flow which shuts down a power take off commonly driven by an internal combustion engine while a second embodiment controls fluid flow to shut down by movement of an intake air blocker valve, an internal combustion engine. Both embodiments include an indicator including a standby indicating light and an operational indicating light. The valve controller in the first embodiment includes a main solenoid with a fluid flow operated grounding switch for permitting operation of the solenoid operated valve that controls the fluid flow from the inlet to the outlet.

Abstract: A used or waste water collection system for an aircraft has a waste water collection pipe that connects a kitchen sink with a collecting tank through a controllable valve. The waste water is transported by reduced pressure. For this purpose, the collecting pipe is connected to the suction system present in the aircraft, especially for removing sewage from the flushing of a toilet basin in the aircraft.

Abstract: An automatic bleed valve for bleeding air from a pressurized liquid reservoir includes a piston in a position piston chamber located in a flow channel leading from the reservoir. A first orifice is provided in a passage through the piston, and the piston is urged upstream by a resilient spring. A second orifice is located in the flow channel. When gas is expelled from the reservoir, the resilient spring will retain the piston in an equilibrium region, allowing the gas to be bled from the reservoir through the flow channel. When liquid begins to flow through the flow channel, the pressure differential over the piston increases, causing the piston to move against a seat of a poppet and seal off the flow channel and the hydraulic reservoir.

Abstract: A gas cylinder valve assembly has an outside portion positioned outside the gas cylinder and an inside portion positioned inside the gas cylinder. A canal for conducting gas passes through the inside and outside portions. The canal communicates with the inside of the cylinder through orifices in the inside portion. The canal further communicates with the inside of the gas cylinder through an opening, gas flow through which is controlled by a check valve. The check valve normally closes the opening. Gas in the cylinder flows to the outside through the orifices. During the filling operation, gas is supplied from outside under pressure. The gas under pressure opens the check valve, and gas flows both through the orifices and through the opening.

Abstract: A nonreturn valve has a housing (1) provided with a central chamber (9) into which open an inlet channel (6) and an outlet channel (7) that may be separated by a sealing membrane (10) provided with a flow passage (18). The membrane (10) has a marginal part (16a) clamped in the housing (1), a central sealing part (16b) and a thinner annular wall (17) that links both parts (16a,16b). In order to obtain a nonreturn valve that has a reliable operation even at the smallest differential pressures, a central crater-like sealing formation (13,14), for example, is provided in the membrane (10). The inflow from the inlet channel (6) to the membrane (10) takes place outside the crater-like sealing structure (13,14) and the flow passage (18) of the membrane (10) is located within the crater-like sealing structure (13,14).

Abstract: An orifice fitting with an orifice plate centered in the flow passage of an orifice fitting via direct contact between a cradle and the orifice plate. The orifice plate is centered via the use of an orifice plate carrier having two channels on its downstream side and two slots located in the bottom portion of the seat, which is located on the plate carrier's upstream side. The plate fits into the seat and a bottom portion of the plate's peripheral edge protrudes through the slots. A cradle having locating surfaces fits through the channels in the orifice plate carrier and firmly holds the orifice plate against the orifice plate carrier. The cradle can be positioned and then secured in place by two adjustable set screws and a stem piece of the cradle. Once the orifice plate has been centered via the positioning of the cradle, the stem piece of the cradle and the set screws can be welded into the body of the orifice fitting.

Abstract: A conduit tube is arranged to include intersecting partition walls dividing the associated conduit tube into four compartments to permit transport and positioning of cable within each compartment in a discrete relationship. The first and second ends of the conduit tube include locking blades, with each locking blade arranged for reception within an associated slot of a second tube member to secure a plurality of the conduit tubes together.

Abstract: An elongated fluid detection device, together with a body of absorbent material, is located between the inner surface of a pipe and an impervious liner spaced from the inner surface thereof, the detection device being operatively connected to an external station. The impervious layer may be of a type normally used for relining defective pipes in situ, and the body of absorbent material, together with the fluid detecting element, preferably substantially filling the cylindrical space between the inner surface of the pipe and the impervious liner.

Abstract: A flexible conduit for vehicle engine coolant circuits, which conduit comprises a series of at least a first relatively rigid portion and a second relatively deformable bellows portion capable of being deformed at least into a curved portion; and an inner and outer wall made of different plastic materials.

Abstract: Flexible hose or tube comprises a hose body and a plurality of ribs extending radially outwardly from the outer periphery of the hose body. The ribs are of annular shape and are axially spaced with respect to each other. The hose body wall is of relatively small thickness as compared to the thickness of the ribs. The hose may be integrally made from a thermoplastic caoutschuc or rubber and exhibits a high degree of flexibility due to its relative softness, while the shape and structure of the ribs provide a high degree of resistance against lateral bending or buckling of the tube.

Abstract: A prepositioning and delivering mechanism for heald shafts is either permanently or temporarily attached to a loom for guiding the heald shafts when a shaft change is to be made. The mechanism has a carrier carrying prepositioning mechanisms each including a rocking lever and a guide roller. These mechanisms are arranged along a longitudinal axis of a journal axle (18) with a spacing that corresponds to a spacing pitch between heald shaft guide frames. Each roller of the prepositioning mechanism is engageable with a respective heald shaft. At least one of the heald shaft guides is engaged with a drive for delivering or advancing of the shaft guides toward the prepositioned heald shafts.

Abstract: The weaving machine has at least two sectional warp beams (20a, 20b) and at least one whip roll (23) rotatably mounted to the machine. Each sectional warp beam is equipped with an individually drivable warp let-off motion (30, 31, 32). Feeler members (13a, 13b) are mounted symmetrically on a rocker-like bar (10) to measure the warp yarn tension and control devices individually control the speed of rotation of the sectional warp beams. The rotational axis (11) of the bar (10) is parallel to the warp plane and is situated between the sectional warp beams. A sensor (14a) determines the deviation of the bar alignment from a reference position, so that it is possible to effect warp let-off control.

Abstract: A retoolable spreader table for an air loom has a trough-shaped cross-section. The spreader table has a projection pointing substantially toward the center of the weft thread insertion channel of a weaving reed. The projection forms with its upper side a support surface for the fabric. The spreader table is equipped with a first spreader element or forward spreader element positioned at the spreader table inlet and a second spreader element positioned at the outlet of the spreader table. A fabric detour element is positioned between the forward and rearward spreader elements in such a way that a slot is formed between the inlet spreader element (8) and a free end of the trough-shaped detour element (12). The fabric slot (16) has a free passage width that is variable, depending on the diameter (D) of a spreader rod (15) that is carried by the fabric (7) in a rotating manner and that is easily insertable into the space encircled by the trough table (1) and the detour element (12).