Abstract: A tap head for keg fittings having an actuating lever pivotally mounted on a housing and connected to a slide movable in the housing and detent members positively engaging in one another to lock the actuating lever and with one of the detent members directly biased toward the stop position and in which the detent members are formed of plastic and are made up of an elastically self-biasing tongue cooperating with a detent edge with one of the tongue and detent edge formed integrally on the housing and the other of the tongue and detent edge integrally formed on the actuating lever and with connections for gas and liquid connectable via the slide with corresponding passages in the keg fittings.

Abstract: A guiding roller for threads, in particular elastomeric threads, on textile machines, in particular knitting machines, includes a shaft which carries the guiding roller and is supported at its ends on both sides of the guiding roller in bearing recesses. The bearing recesses are designed so as to go right through, the ends of the shaft taper towards the bearing recesses, and these ends penetrate the bearing recesses with play and protrude beyond these recesses.

Abstract: A rotary cutting device for material webs consists of a machine frame with rollers supported in pivot bearings on the machine frame, driven by rotary drives and defining a cutting range, namely a cutting roller and a counter cutting roller, which form a roller gap for feeding the web material between them within the cutting range. The cutting and counter cutting rollers are supported so as to roll directly one over the other using spacing rings located outside the cutting range. At least one of these rollers engages at least one adjustable pressure roller link bar between the spacing rings so that the link bar presses one roller against the other roller with an adjustable force.

Abstract: An inverted filter centrifuge consisting of a drum arranged to rotate freely in a housing and having radial filtrate outlets; a cover closing one of its free frontal areas, the drum and the cover being mutually axially movable; a filler aperture in the cover for the suspension to be filtered and a filler pipe passing through the filler aperture. The filler aperture in the cover can be hermetically sealed by a locking component rotating together with the drum which is disconnected from the filler pipe in a manner to avoid friction.

Abstract: An electrical path or angle sensor comprises a first, stationary contact segment, a plurality of stationary, second contact segments arranged one behind the other and separated from one another by dividing gaps, these second contact segments being connected to circuit elements, a sliding contact movable in a predetermined direction of movement and displaceable over the contact segments and the dividing gaps dependent on the path or angle, as well as contact tongues formed on the sliding contact and movable therewith, these tongues being aligned with their contact-making points in a contact line and when the sliding contact is moved connecting the first contact segment each time with at least one of the second contact segments in an electrically conductive manner by this line.

Abstract: An earcup assembly for protecting the ear of the wearer from ambient sound in which a cylinder within a shell adapted to surround the wearer's ear and having a resilient seal engaging the wearer's head around his ear, receives a piston which is held in a fixed position relative to the wearer's head to maintain the volume of the space within the earcup between the piston and the ear seal opening approximately constant when the ear seal flexes under the action of ambient noise impinging on the shell.

Abstract: This invention relates toa process for manufacturing a ribbon constituted by at least one yarn impregnated with a thermoplastics polymer, wherein the ribbon is obtained by controlled sheathing of the yarn by the thermoplastics polymer, then passage of the yarn thus sheathed between two rollers crushing the yarn while the polymer is in its plastic state. This is obtained either by heating the rollers, or, preferably, by subjecting the polymer to the action of ultra-sounds during its passage between the two rollers.

Abstract: A pressure filter for suspensions comprises a boiler-shaped outer jacket, a lid coaxially movable relative to the latter and closing the outer jacket, a filter element protruding from the lid and a reversible membrane arranged coaxially between the outer jacket and the filter element so as to turn out of the outer jacket when the filter is opened and to turn back into the outer jacket again when the filter is closed. When the filter is being closed, a negative pressure relative to ambient pressure is generated inside the membrane, and to prevent formation of a single fold protruding at the sides beyond the rim of the outer jacket, the membrane is deformed by external influences until a triple or multiple fold no longer protruding at the sides beyond the rim of the outer jacket forms in the membrane.

Abstract: A circular knitting machine having knitting needles actuated by pattern bars, electromagnetic selectors for adjusting the knitting needles into various operating positions, mechanical controls cooperating with the electromagnetic selectors, selector elements biased by springs and slidingly displaceable in the pattern bars as well as first and second control cams for pivoting the pattern bars. Only one single, spring-biased selector element is mounted for displacement in each pattern bar. The electromagnetic selectors have individually controllable magnetic poles which are arranged one behind the other in the direction of rotation of the needle cylinder.

Abstract: A flotation dryer nozzle in which respective outer narrow nozzle openings are formed at the edges of the side of the nozzle facing the web to be dried and respective wider nozzle openings are formed in the nozzle side facing the web inwardly of the narrow nozzle openings and in which respective pressure reduction regions are formed between the inside of the nozzle body and the wider nozzle openings.

Abstract: A dual visor and helmet assembly in which inner and outer visors mounted on arbors secured to opposite sides of the helmet for movement between operative and inoperative positions are clamped respectively to one and to the other of the arbors by pre-loaded C-rings coupled to the visors. Respective manually actuatable operating rings on the visors may be actuated to release the clamping forces of the C-rings and to move the visors between their operative and inoperative positions.

Abstract: A system for providing a measure of the smoothness of a moving web in which light from a source is focused on a spot on the moving web. Light from an arc of substantially 360.degree. around the optical axis is collected and light from 120.degree. sectors of the collected light is reflected to three detectors the outputs of which are processed to provide the smoothness measure.

Abstract: A pull roll in which the outer shell of a cooling roll through which a cooling medium flows has grooves in its outer surface forming lands which support a perforated skin. Communication is provided between the shell grooves and a segmented stator groove connected to a source of reduced pressure so that the vacuum exerts a pull on the web while the cooling medium cools the web through the skin.

Abstract: A method of making a variable capacitor microphone in which the fixed capacitor element is formed by first coating the metallized surface of a relatively rigid insulating substrate with a polarizable dielectric material and then placing the substrate on one of a pair of spaced electrodes positioned in an ionizable gas and subjecting the gas to the action of alpha rays to produce ions in the space between the electrodes while applying a potential across the electrodes to cause ions to migrate toward the dielectric material to polarize the same to form an electret. After the fixed capacitor element has thus been formed, it is mounted in spaced relationship to a flexible diaphragm to form a microphone.

Abstract: The detector for detecting the presence of a liquid comprises: a) a metal veguide having a solid cylindrical top first portion of relatively small section with an outside diameter having a first value d1, which first portion is fixed on a support, a cylindrical rigid bottom second portion whose outside diameter has a second value d2 greater than the first value d1, which second portion extends the first portion downwards and is connected thereto by a short linking portion; b) transducer means disposed in the vicinity of the top portion of the waveguide; and c) electronic processing means. The value of the frequency at which the transducer means are excited is selected in such a manner that acoustic wave trains propagate in the cylindrical first portion at the group velocity of low frequency waves, and propagate in the cylindrical second portion at the minimum group velocity corresponding to the point of inflection in the curve of phase velocity as a function of frequency.

Abstract: A pinchcock comprises a housing, a tube section of elastically flexible material arranged in the housing, a pinching element displaceable in the housing in a direction extending transversely to the longitudinal axis of the tube section and engaging on the outer side of the tube section and an actuating member for displacing the pinching element. The housing is designed as a plastic molded part, in which a ball is displaceable, as pinching element, in the direction extending transversely to the longitudinal axis of the tube section. The actuating member comprises a cam engaging the ball, this cam being rotatable about an axis aligned at right angles to the longitudinal axis of the tube section and to the direction of displacement of the ball.

Abstract: A method of and apparatus for determining the genuineness of a document such as a currency note printed at least in part with magnetizable ink in which there is produced a first signal as a measure of the saturation magnetization of a portion of the document printed with the ink and a second signal as a measure of the remanent magnetization of said portion and in which the ratio of the second signal to the first signal is determined as a measure of genuineness of the document.

Abstract: A multiple bill escrow apparatus for forming a stack of successively received bills at an escrow location and for selectively moving the stack to a stacker or to a return in which a ram moves successively received bills to between pairs of first and second belt lengths to form the stack and in which the first and second belt lengths are mounted for relative movement to accomodate said stack and are concomitantly driven to move said stack out of the escrow position. Diverter belts are actuated selectively to direct the stack to a return path formed by pairs of third and fourth belt lengths mounted for relative movement to accommodate the stack and concomitantly driven to return the stack.

Abstract: Apparatus for separating, counting a stacking sheets, including a feed roller and cooperating stripper shoe for permitting the passage of only single sheets fed therebetween, said sheets being moved along a curved path defined by a guide plate cooperating with the feed roll as the sheet emerges from the region between the stripper shoe and feed roll. The leading edge of the sheet moving along said curved path enters into a nip between an acceleration roller and an acceleration idler mounted on a common axis with the feed roll to abruptly accelerate the sheet and drive it into a stacker wheel which delivers the sheet to an outfeed stacker. The feed roll is provided with a plurality of surfaces of differing coefficients of sliding friction to facilitate separation of sheets.