Abstract: A cart for transferring a warp exchange system from a machine that prepares such a warp exchange system to a warp beam lifting carriage, is equipped to at least temporarily store a prepared warp exchange system after having picked up the system from a warp drawing-in carriage that forms part of the machine for preparing the warp exchange system. The cart is further compatible to transfer the stored system to a warp beam lifting carriage which in turn inserts the system into a loom. The cart makes sure that the warp exchange system is presented with the proper orientation relative to the loom so that the insertion can take place in the manner of a cassette formed by the cart and the warp exchange system including the warp beam.

Abstract: A gear drive for shuttleless looms has an input transmission train and an outpost transmission train cooperating for converting the continuous rotational movement of the main loom drive shaft into an oscillating back and forth movement which in turn is converted into a horizontal back and forth movement of the respective gripper rod carrying a gripper head back and forth into the loom shed. The output transmission section or train has two auxiliary parallel output drive shafts, both of which are driven from a central output drive shaft. Two pinions at the free ends of the auxiliary parallel drive shaft mesh with the gripper rod, thereby distributing the drive forces over a larger surface area for reducing the wear and tear on the gripper rod and on the two parallel output drives.

Abstract: Tentering clamps for an endless tentering chain are formed so that two clamp bodies slideably mounted on at least one common guide bar can move toward each other and away from each other for adjusting the pitch. The guide bar or bars have entraining stop elements so positioned that an axial pulling force that moves the tentering chain, is transmitted through the guide bar or bars. The pitch is adjusted with the help of at least one, preferably two, toggle link mechanisms carrying a control roller engaging a guide rail. When the toggle links of the toggle link mechanism are straightened out in the travel direction of the tentering chain, the toggle link mechanism is substantially relieved of the axial tension force or load because the load passes through the guide bars (10) and the clamp bodies forming a pair. A plurality of such compound tentering clamp body pairs are linked by chain link plates and respective linking chain journal pins (23).

Abstract: A method of controlling an active antenna comprising a matrix of individual transmitting/receiving elements. Two optical frequencies are superposed to generate an optical beat signal in the microwave frequency range. After electrical/optical conversion the beat signal is fed with a defined phase and amplitude to the individual transmitting/receiving elements of the antenna.

Abstract: In order to avoid or at least minimize weft thread breaking in an air nozzle loom, the supply of pressurized air to the relay nozzles is controlled in such a manner that the velocity of the blowing air is diminished toward the end of the weft thread insertion channel near its exit end. As a result, the tension on the weft thread is correspondingly reduced and the diminishing of the blowing air velocity can take into account any dynamic characteristics of the particular type of thread being inserted. Additionally, upon completion of the travelling weft thread insertion field, a weft thread tensioning field is imposed on the weft thread for properly tensioning the weft thread for the beat up. The tensioning following the insertion is applied only by selected nozzles or groups of nozzles, for example, by a group in the center of the weaving width and by a group toward the exit end of the insertion channel.

Abstract: An optical power limiting device whose transmissibility within a wave length range that is of interest is a function of the intensity of the incident radiation, the detuning of the resonance of surface plasmons being utilized. The device is particularly suitable for the protection of IR-detectors against the incidence of high radiation intensities.

Abstract: The binding of free weft thread ends at the exit of the weft thread insertion channel in an air weaving loom, into the fabric edge, is to be avoided. For this purpose it is necessary to straighten out the turbulent weft thread ends. The straightening is accomplished by a blowing nozzle that directs its air stream onto the free weft thread ends in a direction substantially defined by the fabric withdrawal. The auxiliary nozzle is arranged in an auxiliary reed section used for forming an auxiliary selvage. Such a blowing nozzle may be combined with a nozzle for stretching the weft thread end.

Abstract: The inclusion of faulty weft threads into a fabric being woven on an air nozzle loom is prevented with a minimal effort and expense for equipment and control components. For this purpose a sensor upstream of the weft thread insertion components provides the signal of a fault and this signal starts a thread removal program under the control of the loom control unit. The program is stored in the memory of the central computer of the control unit. According to the program the beat up motion is stopped and a predetermined length of weft thread is passed entirely through the insertion channel. When a predetermined number of weft shots have been made or a predetermined length of time has passed, the program provides a signal for the cut off of the faulty section of the weft thread and the faulty section is sucked out of the insertion channel and collected in a container.

Abstract: A decoy for misdirecting heat-seeking and radar-echo-seeking missiles comprised of as main components a radar reflector and an engine and capable of simulating an aircraft in the infra-red wavelength of 1.5 to 2.5 m.mu.; 3-5 m.mu.; and 8-14 m.mu. and simultaneously in the radar band. The decoy is spectrally adapted in the infra-red range and is contoured to exhibit a large reflective surface with a doppler effect in the radar band. The parts are constructed so that the desired configuration and aerodynamic stability is achieved only when the decoy is prepared for operation. A plume covering an appropriately large area is produced and the content of the exhaust includes carbon dioxide and/or metallic powder to a high IR radiation of the plume.

Abstract: For the determination of all linearly independent components of an Nth order gradient tensor of a magnetic field, at least 3+2N planar gradiometers of the Nth order are arranged on at least 3 non-parallel and non-orthogonal surfaces. As a result, three-dimensional coil structures are not necessary.

Abstract: A superconducting analog-digital converter in which at least one of the electrical feed lines or conductance lines is replaced by an optical feed line. Current input and output signals being converted or generated by optoelectronic and/or magneto-optical elements.

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).

Abstract: A separable bridge, particularly useful for military purposes, having bridge modules which can be coupled together and whose roadway elements, diagonal elements and lower chords form a vertically adjustable framework. The lower chords of the bridge modules are shorter than the roadway element of that bridge module, and the diagonal elements are fastened to ends of the lower chords. The roadway elements have a plurality of fastening points for the diagonal elements and the lower chords. These fastening points are located at different distances from an end of the roadway element. The roadway element, the lower chords and the diagonal elements have constant lengths.

Abstract: Simulation of ship's noises by means of liquid jets penetrating into the water.

Abstract: A tubular knitted fabric is guided over a first rotatably arranged system of squeezing roller pairs and is then squeezed out, during a simultaneous continuous pulling off of the fabric, by a second system of squeezing rollers cooperating with the first system. The creation of edge markings is thereby completely prevented. An apparatus for the squeezing out process has a first system of rotatably arranged squeezing roller pairs which is held inside of the tubular fabric front the outside thereof and which has an adjustable outer periphery and a second system of rotatably arranged squeezing rollers also held on the outside of the tubular fabric. The second system is adapted to the periphery of the first system of squeezing roller pairs. Both systems cooperate with each other.

Abstract: An improved method is provided for separation of a mixture of an organic fluid and water. The method is a combination of a distillation, an H.sub.2 O-selective pervaporation and a reverse osmosis and is particularly suitable for the separation of glycol and water.

Abstract: An arrangement for mixing fluids and for growing crystals by the vapor diffusion method under conditions of weightlessness has an exterior housing containing a mixing part and a reaction part. The mixing part has two cylinders in which the starting fluids are stored until the reaction is to be performed. Each cylinder has a piston associated therewith, and internal bores permit the starting fluids to be pumped between the respective cylinders to mix them. Following mixing, the fluids are pumped through a central bore to a cylinder in the reaction part, which also has a piston associated therewith. Withdrawal of the cylinder relative to the piston causes the formation of a drop, permitting the crystallization to take place. Following completion of the reaction, the cylinder is returned to its original position, sucking the fluid into it.

Abstract: Apparatus for separating a gas-water vapor mixture having a cooling liquid space for circulation of a cooling liquid, at least one duct arranged in the cooling liquid space and a separation water space arranged adjacent the duct. The walls of the duct are made of a permeable membrane so that water condensed from the gas as it flows through the duct can permeate into the separation water space.

Abstract: Lengthwise stretching machines for thermoplastic synthetic films are equipped with mechanical or opto-electrical devices for detecting a tearing of the film or an accumulation of film on the stretching rollers and for stopping the machine when tearing or accumulation occurs, to protect the stretching rollers. Unallowable loads and possible damage to the roller bearings are avoided by mounting the bearing housings (1, 2) of each roller (3, 4, 5) of a lower roller (7) in the machine frame for cooperation with a force generating device (8) which presses the respective bearing housing (1, 2) toward oppositely located rollers (9, 10, 11) of an upper roller group (12) to an extent permitted by stops (14, 15) rigidly arranged on the machine frame (13). The rollers (3, 4, 5) of the lower group received in the bearing housing (1, 2) can overcome the pressing force of the device (8) to slide in a yielding direction away from the upper rollers, when a roller accumulates film thereon.

Abstract: A transmitting and receiving part of a pulse Doppler radar, in which the transmitting oscillator, by frequency shifting, is at the same time used as a local (reception) oscillator, and the intermediate-frequency reference frequency is generated coherently with respect to the pulse repetition frequency. Since only one high-frequency oscillator is required, the quality of which does not have to meet very high requirements, a low-price pulse Doppler radar can be implemented.