Abstract: A machine for packing spring units in web material into the form of a roll comprises a winding mandrel. Conveyor means act against said mandrel from below so as to define therewith a bottom entry nip for spring units to be compressed and wound around the mandrel. Means exert pressure on the conveyor means in the direction of said mandrel.

Abstract: A rangefinding adjustable bow sight for use with an archery bow having a mediate grip portion. A frame is adapted for rigid attachment to the bow adjacent the grip portion. A lead screw is mounted to the frame such that the axis of the lead screw is generally parallel to the length of the bow, and such that rotation of the lead screw about its axis with respect to the frame is permitted. The lead screw has a first section having a first thread pitch and a second section having a second thread pitch different from the first thread pitch. A first rangefinding pin is fixed to the frame. A second rangefinding pin is movably mounted to the frame by a follower block threadedly engaging the first section of the lead screw for moving the second rangefinding pin axially with respect to the lead screw as the lead screw is rotated.

Abstract: The sound of breaking glass comprises a low frequency or thump sound at the moment of breakage, followed by a tinkle sound caused by collision of the glass fragments, this sound being of lower amplitude.The invention turns on the discovery that, irrespective of the size and shape of the glass and the characteristics of the surroundings, the thump has substantial low frequency components at about 350 Hz, and the tinkle has substantial high frequency components at about 6.5 KHz. The method of the invention lies in identifying the high and low frequency components in that order and separated by a short time interval.Apparatus according to the invention comprises a microphonefeeding into a high frequency and a low frequency channel. The low frequency channel has a bandpass filter centered on 350 Hz, the output of which triggers a time delay establishing a time window during which a signal is applied to one input of an AND gate. The high frequency channel includes a bandpass filter centered on 6.

Abstract: Stripping dies and a method of fabricating matching male and female stripping dies wherein the female die and a portion of the male die are fabricated from the same piece of wood. A series of separated sawcuts are cut into a first sheet of wood to define the shape of a female stripping die using a saw blade of thickness approximately twice the amount by which a diecut sheet of cardboard, corrugated paperboard, corrugated plastic or the like extends beyond the edges of the female die during the stripping operation. Spacer blocks are then mounted on the first sheet of wood in a plurality of locations corresponding to portions of scrap material on the diecut sheet, and the first sheet of wood is attached to a base sheet of wood through the spacer blocks. Additional sawcuts are then made to connect the separated sawcuts, and then the male and female dies are separated.

Abstract: An arrow rest assembly for an archery bow comprises a thin strip member having a V-shaped notch at one end for supporting an arrow shaft. The strip member is mounted to the mid-portion of the bow in a stabilized fixed position relative to the bow. The mounting of the strip member to the bow includes an arm pivotally connected to and extending rearwardly from the mid-portion of the bow, an elongate rod extending horizontally and laterally of the mid-portion of the bow and slidably and pivotally mounted to the arm, a stabilizer member fixedly attached to the rod, and a resilient flexible plate member fixedly mounted on the stabilizer member and supporting the strip member. The stabilizer member and plate provide increased stability for maintaining the strip member in a desired fixed position relative to the bow.

Abstract: A device for detecting leakage of a tube section communicating with atmosphere at a first end comprises gas filling and flow measuring apparatus for filling the tube section from a second end with a known gas. Pump apparatus is arranged for conveying the resulting gas contents between the ends back towards and through the second end. Gas concentration measuring and recording apparatus is located at the second end for recording the concentration of the known gas in the gas contents with respect to time.

Abstract: In the friction spinning of yarns, staple fibres are supplied to a yarn formation zone in which the yarns end is rotated by frictional contact with at least one twisting element. In the yarn form zone, a jet of air is applied to the yarn or forming yarn by nozzle to increase the frictional forces between the yarn or forming yarn and the twisting elements. The formed yarn is continuously removed from the yarn formation zone.

Abstract: A dialysis instrument having a pump located on the dialysate side of a dialyzer for moving body fluids. A disposable cartridge mounted to a main frame includes containers of calcium chloride, priming solution, water, sorbent column, dialysate reservoir bag and potassium/hydrogen citrate reinfusate reservoir. A plurality of monitors detect the status of the flow of fluids and process of dialysis and provide data for the operation of a plurality of pumps and clamps to control the direction of flow of various fluids. The entire instrument is mounted on a scale to detect weight change due to the difference between inflow and outflow of body fluids.

Abstract: A child restraining seat having a harness with an adjuster for controlling harness sizing. In the preferred embodiment, the harness includes a pair of belts fixedly secured to a pad having a downwardly extending tongue lockingly received by a belt buckle secured to the seat between the legs of the child. The opposite ends of the belts extend slidably through the seat back being attached to a moveable bar. A third belt attached to the moveable bar extends forwardly through a slot in the forward portion of the seat and is adjustably received by an adjuster mounted to the front of the seat. The adjuster includes a spring biased cam bar for lockingly holding the third belt in place. Alternate embodiments include such a harness assembly having the buckle fixedly secured thereto with a tongue secured to the seat.

Abstract: A disposable camera constructed to produce a single photograph and to collapse to a stored position. A top wall and bottom wall are spaced apart by a pair of inwardly folding side walls and a pair of outwardly folding side walls. A negative and associated photographic paper is slidably mounted in the camera. An externally located pair of pressure jaws receive the film and paper to break a packet of development material mounted to the paper and negative and subsequently apply the material onto the paper. The camera is disposable after one exposure whereas the jaws are retained for use with the next camera. A shutter is moveable across an aperture in the front wall to allow light to pass to the negative.

Abstract: A painting apparatus has a peristaltic pump having a pump cavity in a pump body and a pumping tube in the cavity. The cavity is provided with an elongate drain passage. A photoelectric sensor is arranged to receive light from a light source, both being associated with the drain passage to sense any leakage of paint from the pumping tube draining into the drain passage and to thereupon stop the pump. An alert light may be provided for signalling that paint leakage has stopped the pump. Preferably, a funnel-like transparent container is removably fitted in the cavity below the pumping tube to receive the paint leakage. The container has a spout-like downward extension engaged in the drain passage but allowing transmission of light to the photoelectric sensor.

Abstract: In a mechanical seal, a seal face member is compressed by a shrink fitted squeeze ring onto a spigot of a carrier forming one of two seal elements. This arrangement reduces distortion of the seal face and shrouds the seal member from attack by a fluid product in the space. Distortion of the seal face is further discouraged by also shrink fitting the squeeze ring onto the carrier. The squeeze ring circumferentially abuts the face seal member and either radially or circumferentially abuts the carrier to provide structural stability and to shroud the face seal member on three sides leaving only the seal face exposed. The squeeze ring can be arranged internally of the seal face member with the spigot on the carrier arranged externally. In either event the seal face member, usually constructed from carbon is held under radial compression for increased strength.

Abstract: A computer controlled system is provided for regulating the flow of coal into a railway car or the like. The coal flows into the car through a loading chute. When the total weight in the car reaches the desired weight as determined by spaced platform scales, the computer control shuts off the flow by actuating the flow gate. The difference in the weight of the front and rear car trucks is noted and the inclination of the loading chute is regulated up or down by the computer control through operation of a hydraulic cylinder. If the chute is raised, the height of the coal within the car is raised and with all factors the same, the front of the car will be loaded more. As the chute is lowered, the height of the coal that can enter the car will be less and, thus, a shift of the weight to the back of the car can be effected. In accordance with the computer reading for each car, the position of the chute can be regulated for each following car of the same size and height.

Abstract: A roof membrane anchoring system in accordance with the present invention includes an anchoring plate with a substantially planar bottom surface and convexly radiused top surface that can be attached to an existing structure. The anchoring plate is disk-shaped and has a cylindrical axial opening in the center into which a lip and a bottom flange extend to form a channel. A cap with a resilient cylindrical body having V-shaped flanges at the bottom and either a disk or ring attached to the top is inserted into the anchoring plate once a roofing membrane is inserted into the axial opening in the plate. The resilient cylindrical body has a cylindrical cavity therein and compression cuts which extend through the body and to the V-shaped flange to allow for the resilient body to assume a first state wherein the greatest diametrical dimension of the resilient cylindrical body and the V-shaped flange is slightly less than the inside diameter of the lip extending into the axial opening.

Abstract: A digital transmission system using standard FM broadcast stations employs an SCA subcarrier which is amplitude modulated with a second subcarrier modulated to have different phase orientations representative of digital data. Bits are separated from a digital data stream in groups and are differentially encoded into one of at least four phase orientations of the second subcarrier. The amplitude modulated SCA subcarrier is combined with the stereo signal output of a stereo multiplexer to form the modulating signal for the station FM modulator. The receiver includes a differential phase detector for reconstruction of the differentially encoded digital data.A system which additionally includes means for modulating the SCA subcarrier with a composite signal having an audio signal in addition to the differentially encoded second subcarrier is disclosed.

Abstract: A fluid shear coupling apparatus includes a driving member comprising a rotor mounted to a shaft and defining several annular ridges and grooves. A driven member including a bearing housing is mounted to the shaft. A cover secured at the perimeter to the bearing housing has a disc-shaped portion defining several annular ridges and grooves positioned complementary with the ridges and grooves of the rotor. A shear fluid therebetween provides variable coupling according to the proportion of fluid in the reservoir vis a vis the working chamber defined by the complementary grooves and ridges. A temperature responsive valve cooperates with a modulation ramp encasing the valve end to provide a fluid control orifice which varies in size and radial location in response to temperature, thereby providing temperature modulation of the amount of shear fluid in the working chamber, and consequently, the degree of coupling.

Abstract: A local oscillator null circuit and method for use in tuning a wideband, heterodyne receiver relatively close to zero frequency without experiencing excessive feedthrough from a local oscillator to an associated IF stage in the receiver. The local oscillator is connected to circuit means for generating a derivative signal proportional to the local oscillator signal and shifted in phase with respect thereto by a desired amount determined by the phase difference between the local oscillator signal and the signal in the mixer output spectrum which is at the local oscillator frequency. The null circuit combines the derivative signal with the mixer output signal proportionally to produce a null at the local oscillator frequency.