Abstract: The waste water from an ice cube making machine, both from the cube unit itself and from the bin where the ice cubes are stored is supplied to an insulated heat exchanger. The heat exchanger is divided into two sections with a first cold input section being separated from the remaining portion of the unit by a baffle to avoid undue mixing of the water, and to maintain the water at the input section at a low temperature, near freezing. A heat exchange coil is located in the first section of the heat exchanger and water to be formed into ice is precooled by circulation through this coil. Additional coils are located in the remaining portion of the heat exchanger to further cool refrigerant liquid which has been condensed and is under pressure ready for return to the ice-making units. The temperature in the input section of the heat exchanger is in the order of 34 degrees F.

Abstract: An insulating and cooling receptacle for a beverage bottle comprises an insulating base portion and a bottle-cooling cap portion which is filled with a freezable substance. The cap is removable to permit insertion or removal of a bottle and to permit the cap portion to be separately pre-frozen prior to use. The cap portion is dimensioned to permit the top of the bottle to project through its open top so that the user may drink or pour from the open bottle while the bottle is cooling and insulated within the receptacle.

Abstract: In the joint, the raceways of the tulip element have the shape of a torus. The ratio of the maximum distance between the axis of the tulip element and the axis of the tori defining the raceways to the radius of said tori is between 1/4 and 3/4. This results in a considerably improved mechanical efficiency and consequently in a reduced opposition to sliding.Application of the joint to automobile vehicle transmissions.

Abstract: A torque transmitting assembly including three telescopically arranged shafts is formed with an interlocking ball device which releasably axially locks the shaft members together. The ball device may include one or more balls which are movable radially of an intermediate shaft member, with the balls locking the intermediate shaft member with an inner shaft member when the balls are in a radially inward position and releasing said axial interlocking when the balls are permitted to move to a radially outward position by engagement within a recess of the outer of the three shaft members. The inner shaft member is formed with a conically shaped attachment member which operates to tend to urge the ball into the recess to release axial interengagement between the inner and intermediate shaft member and to permit the ball to move along the conical surface thereof back to its radially inward position when said locking engagement is to be re-established.

Abstract: Apparatus for limiting the amount of torque to a driven shaft having a tool for applying power to a workpiece is continuously adjustable throughout a predetermined range. A housing defines a cylindrical chamber open at one end having an adjustable plate disposed therein. First and second shafts enter the housing through opposite ends and have first and second disks attached thereto within the housing. Disks are frictionally coupled by a force generated by a spring disposed about the first shaft between the adjustable plate and the first disk. When the preselected limit of torque is exceeded the disks slip with respect to one another thus, limiting the amount of torque delivered by the apparatus. Adjustment of the plate selectively increases or decreases the compression of the spring and thus, alters the maximal amount of torque that can be delivered. An alternative embodiment is disclosed for incorporating the apparatus within the housing of a power tool such as a drill motor.

Abstract: A thread guide system for feeding a plurality of threads to a plurality of thread carriers moving in tandem in an endless circuit.

Abstract: A velvet-type or snap-together fastener web comprises a warp-knitted ground structure and series of interlooped loops disposed in at least every other wale, each loop including a pair of mushroomed stems projecting from the wale at each course. To produce such a fastener web, a double-faced fabric is knitted on a Raschel warp knitting machine, and is separated into a plurality of strips by dissolving transversely spaced water-soluble threads in the fabric. Each strip is divided into front and back fabric webs by severing thermoplastic thread portions therebetween, leaving a multiplicity of raised stems on each fabric web. The raised fabric stems are then heated to mushroom their ends.

Abstract: An automatic towel dispenser has a housing containing a washing and a drying chamber for an endless towel passable therethrough and has a cleaned section available for use extending outside the housing between a delivery slot and an inlet slot, respectively, formed in the housing, the endless towel being movable from the inlet slot to the washing chamber and from the drying chamber to the delivery slot, the housing also containing a first supply chamber for variably stacking a plurality of soiled towel sections of the endless towel therein and a second supply chamber for variably stacking a plurality of cleaned towel sections of the endless towel therein, the sections of the towel being depositable from above into the respective supply chamber therefor and being withdrawable from below an overlying loop thereof. The dispenser is improved with a shaft separated from the respective supply chamber and traversible by the towel sections withdrawable from the respective supply chamber.

Abstract: A filter for use in a vertical axis automatic clothes washing machine mounted on the exterior of a two section separable agitator and which projects into a fluid flow path. The exterior section is easily removable, cleanable and replaceable. The filter is formed as a double cone with inlet openings on one side and a foraminous filter surface on the other side.

Abstract: The machine comprises a dished cutter rotary supported by a shaft connected to a driving shaft by means of a sliding coupling device comprising an extension of the shaft having a radial pin sliding in slots of a hollow shaft.A grinding wheel is supported by an arm laterally hinged to the cutter and driven by an independent motor to sharpen the cutter with a constant cutting edge. The machine comprises moreover, a clutch controlling the feeding roller for material to be skived, which includes spring means providing thrust, while a speed variator makes it possible to adjust the speed of rotation of the feeding roller.

Abstract: A door latch construction has exterior and interior operators connected through a latch driving mechanism operable for extending a bolt from a door edge. The exterior operator includes a lock cylinder telescoped by a thickened, hardened metal guard collar with the guard collar longitudinally inwardly abutting a metal shield retaining the shield inwardly against an exterior face of the door. The shield also extends inwardly of the door interior at least partially annularly around a portion of the latch driving mechanism thereby deterring manipulation of the latch driving mechanism by penetration through the door exterior face. The lock cylinder longitudinally inwardly abuts the guard collar so that the guard collar retained between its lock cylinder abutment and its shield abutment is rotatable to deter exterior attack against the overall exterior operator.

Abstract: A lock including a lock casing (1), a locking mechanism (2) dislaceable therein and connected to a latch bolt (2a) and block means (12), which are movable transversally to the displacement direction of the locking mechanism and resiliently loaded (14) towards positions blocking the locking mechanism, wherein the blocking means can be brought to releasing positions by insertion of a card (3) serving as a key and having recesses (3a) corresponding to the blocking means. The blocking means (12) are preferably annular and entirely guided in the displaceable locking mechanism (2) as well as moveable between two blocking end positions, in which each blocking means is in locking engagement with the lock casing (1a,1b). The card (3) belonging to the lock has through-going, elongated slits (3a) located and dimensioned to receive the annular blocking means (12), so that upon insertion of the card all the blocking means (12) are brought to intermediate positions permitting the displacement of the locking mechanism.

Abstract: A theft proof lock which includes a protective sleeve rotatively disposed relative to a lock cylinder so that the protective sleeve is free to rotate whenever a torque or turning movement is imparted thereto by one attempting to tamper with the lock to secure against unauthorized access to the lock secured premises and thereby prohibiting such tampering from defeating the lock.

Abstract: Billets of hot steel are hot rolled through a series of rolling stands to form an elongated flat. This flat is first worked to a predetermined thickness and width and then subjected to an edging pass at a succeeding stand. The edging pass is comprised of a pair of rolls having spaced apart, aligned grooves to receive the flats. The groove in one of the rolls is provided with a plurality of holes having certain characteristics. The depths of the roll grooves, the distance they are spaced apart, the depth and other characteristics of the holes provided in the one grooved roll and the widths of the roll grooves are all adjusted with respect to the predetermined dimensions of the flats entering the edging pass so that desired serrations are imparted to the flat as it passes through the edging pass. A final flat pass may be utilized to finalize the dimensions of the finished, serrated flat. The holes are cut into the roll groove by electric discharge machining.

Abstract: An eavestrough corner bracket made from an elongated bendable sheet strip with a longitudinal axis. The bracket has inner and outer portions folded about the longitudinal axis to produce respective corner side portions inclined to each other to define side walls of opposed corners which are generally complementary to adjacent intersecting inner and outer portions of the eavestroughing. The bracket has an intermediate portion disposed between the inner and central portions thereof, the intermediate portion having a plurality of folds to incline corner portions of the bracket for both an outside corner and for an inside corner of the bracket. The invention discloses a method of folding a structure from a blank to eliminate joining together of portions of the bracket.

Abstract: A hand-held, remote reading, liquid level measuring device, also suitable for measuring specific gravity or other parameters of the liquid, containing a supply of gauge liquid which is spill-proof in any position of the measuring device and with the measuring device becoming inoperative upon positions which would give excessive error in liquid level measurement readings. A unique combined pump check valve is also disclosed. A method is disclosed for accurately inserting a tube within the liquid to be measured so as to simulate the level measurement on a conventional dipstick.

Abstract: A calibrator (FIG. 1) can calibrate a magnetic azimuth detector (18) of a craft (50). The service detector (18) is responsive to the magnetic field of the earth to provide a service heading signal. The calibrator includes a test detector (10) for providing a test signal signifying the magnetic orientation of the test detector with respect to the prevailing magnetic field of the earth. Also included is a turntable (12) for rotatably supporting the test detector (10). Also included is a calibration computer (34) connected to the test detector (10) and responsive to the test heading signal. The calibration computer (34) is operable to determine the variations in the test heading signal due to changes in the magnetic field of the earth. The calibration computer (34) is operable to connect to the service detector (18) and determine the difference in the service heading signal when the craft (50) is adjacent to and removed from the service detector (18).

Abstract: A disease diagnostic method and apparatus in which a two-dimensional pattern diagram representing the relation between integrated values of peaks and the retention times in a chromatogram of substances in a body fluid of a subject is obtained to be geographically compared, for disease diagnostic purpose, with a two-dimensional pattern diagram representing the relation between integrated values of peaks and the retention times in a chromatogram obtained through separating and detecting substances in a body fluid of a normal person, and also with two-dimensional pattern diagrams representing the relation between integrated values of peaks and the retention times in chromatograms obtained through separating and detecting substances in a body fluid of abnormal patients classified by diseases.

Abstract: In a safety apparatus for automatic leakage supervision at a pressure fluid transition in a contact zone between two interconnected, pressures fluid conducting members there is formed in at least one of the members a passage which opens into the contact zone. The passage contains a pressure medium. Means are provided to maintain a certain predetermined normal pressure in the passage and a monitoring means is adapted to monitor the pressure in the passage to indicate deviations from the normal pressure.

Abstract: Electronic engine synchronization and timing apparatus for use in controlling fuel injection and/or spark ignition for an internal combustion engine is disclosed. An engine crankshaft rotates a rotary body having a plurality of radial projections, and a single crankshaft reluctance sensor is utilized to provide pulses in response to the passage of these projections and thereby provide a signal related to crankshaft position. An engine camshaft rotates a rotary body with radial projections at half of the crankshaft speed, and a pair of camshaft sensors provide signals in response to the passage of the camshaft projections which are indicative of the rotational position of the camshaft.

Abstract: An apparatus for measuring the mass of a flowing medium, especially for measuring the aspirated air mass in internal combustion engines, which has a temperature-dependent resistor disposed in the path of a flowing medium, whose temperature and/or resistance is controlled in closed-loop fashion in accordance with the mass of the medium, with the control variable being a standard for the mass of the medium. The temperature-dependent resistor is embodied as a hot band and guided over at least three support points in the form of a loop. The band portions of the loop extending away from the intermediate support point are then connected with one another in an electrically conductive manner at a contact area. The hot band is disposed in the flowing medium in such a manner that one of the narrow faces performs as an exposed face of the hot band disposed counter to the flow direction, while the wide faces extend substantially in the flow direction.

Abstract: An inductive displacement transducer is proposed which serves to convert a mechanical movement into an electrical signal and in particular, in order to measure the fuel consumption of an internal combustion engine, the transducer ascertains the movement of an air flow rate meter disposed in the intake tube of the engine. The displacement transducer includes a core comprising two E-shaped sets of arms disposed symmetrically relative to one another, of which one set of arms serves as the measuring arm set, the middle arm of which is surrounded on one end by a measuring magnetic coil and on the other end by a measuring short-circuit ring connected with the air flow rate meter, and the other set of arms acts as a reference arm set, the middle arm of which is surrounded on one end by a reference magnetic coil and on the other end by a fixed reference short-circuit ring. The measuring short-circuit ring is connected with a leaf spring, which is secured on the air flow rate meter.

Abstract: A fuel-feed line extends from a diesel-fuel tank to a fuel pump for a diesel engine and the upstream side of this fuel pump is connected via a return line back to the tank. A feed flow meter is provided in the feed line for measuring flow therein and a return flow meter is provided in the return line. A common housing carries both of these flow meters so that the difference between the two measured flows, which constitutes the fuel consumed by the engine, can easily be calculated.

Abstract: For measuring the density of fluids whose densities lie within a predetermined range and whose coefficients of thermal expansion vary within this range, a stem hydrometer has a lower body volume which extends up to the lowest marking on the density scale and is immersed when the hydrometer is buoyant in a fluid at the highest part of the density range, a scale volume which extends between the lowest and highest markings on the density scale and is immersed with the body volume when the hydrometer is buoyant in a fluid at the lowest part of the density range, and a stem volume above the highest scale marking. The body volume has a coefficient of expansion substantially equal to that of the fluid at the highest part of the range, and the scale volume is comprised of material such that the coefficient of expansion of the combined body volume and scale volume is substantially equal to that of the fluid at the lowest part of the range.

Abstract: Force transducers are coupled to the shaft of a wheel unbalance measuring device to provide periodic electrical signals indicative of unbalance forces. Operation of the system while a known unbalance is mounted on the shaft provides data from which calibration constants for the system are calculated. The measuring system is adaptable to implement certain system self diagnostic processes. The system may continuously drive the shaft and display the force transducer output peak values so that the transducers may be monitored for excessive noise and for normal operation. The balancer shaft may also be run continuously and two plane unbalance displayed so that the stability of the system may be monitored. In each of the latter two diagnostic capabilities readings are taken by the system over a predetermined number of shaft revolutions so that noise frequencies imparted to the data by the drive components may be substantially eliminated.

Abstract: A pendulous type of oil filled accelerometer is disclosed herein, specifically one which is sensitive to temperature changes sufficient to introduce a temperature related error into its output signal, if left uncorrected. A technique which compensates for these temperature changes in order to reduce the resultant error to an acceptable level is also disclosed herein. This technique uses the oil itself, specifically its sensitivity to changes in temperature resulting in changes in its density, in combination with an expandable/contractible bellows.

Abstract: A method and apparatus for generating and detecting acoustic surface waves particularly useful in the non-destructive testing of materials. In this method, the acoustic surface wave is generated in the test sample by a generator transducer coupled to the test sample so as to cause the acoustic wave to impinge on it at the required critical angle. The acoustic surface wave is detected by a pair of spaced steel wedges having their narrow ends in contact with the surface of the test sample so as to detect the shear component of the acoustic surface wave and to generate bulk waves in the steel wedges which travel away from the plane of the contact surface to pick-up transducers.

Abstract: The invention is related to an acousto-optical liquid crystal cell and the ways of using it in acoustical holography and imaging systems. The molecules of the liquid crystal layer can be reoriented in a direction perpendicular to the direction of an ultrasonic wave propagating in the medium. The cell has multi-layered walls providing high acoustical transparency for waves incident at various angles, such that multiple reflexions and parasitic effects in the liquid crystal are reduced. This results in a wide acoustic imaging field and high resolving power for details of an acoustic object. This cell makes possible the direct and real-time conversion of an acoustical hologram into a visible image representing at will the intensity on the phase variations of ultrasonic waves coming from the internal structures of a body.

Abstract: In non-contact ultrasonic flaw detection, a pulse laser beam having a frequency in the infrared band is focused by a lens and caused to strike the material to be inspected, the ultrasonic wave generated by the shock upon the laser beam striking the material is propagated within the material to be inspected and received by an electromagnetic probe which detects the defects in the material being inspected.

Abstract: A vibration sensor arrangement comprised of a mechanical-electrical transducer for converting mechanical changes such as displacement caused by vibrations to corresponding electrical signals such as phase-shifted pulse signals and including a body mounted on a structural block such as an engine block which is susceptible to vibrations. The body accommodates a ferromagnetic material member which is disposed on a resilient member such as a flat spring and which is capable of relative displacement in response to the vibratory movement of the block or body. At least one magnetically soft material member and a permanent magnet are both disposed adjacent to the range of the relative displacement of the ferromagnetic material member. The magnetically soft material member has an electrical coil located thereon. In the arrangement, when a pulse voltage is applied to one end of the electrical coil, a voltage drop across a resistor coupled with the other end of the coil is detected.

Abstract: A method of adjusting a given pretension in threads on tensile strength testing apparatus. A force measuring device is used as an adjusting member for the pretension, from where the tensile load increases and the elongation thereby appearing is measured. The loose thread inserted into the thread clamp is either pretensioned by means of a movable testing clamp, or the thread is stretched by a transport device until the force measuring device indicates the given pretension value.

Abstract: Theload cell herein disclosed is designed for precise measurement of forces along or parallel to a single axis, while being substantially immune to forces applied along the other mutually perpendicular axes as well as moments applied about any of the three mutually perpendicular axes. Rigid force input and force output members are resiliently interconnected by a pair of parallel flexure beams which establish with such members a parallelogram type of linkage which is relatively yieldable to forces parallel to the selected measurement axis while being relatively stiff and unyieldable to forces parallel to the other two axes and to moments about any of the three axes. A strain gage-equipped sensing beam is mounted within the plane of the parallelogram linkage and between the two flexure beams. One end of the sensing beam is rigidly connected to the fixed force output member, while the other end is free to flex in cantilevered fashion responsive to displacement of the force input member.

Abstract: An improved apparatus for collecting atmospheric samples, particularly air samples, comprises a sealed collapsible receptacle which includes a hollow body having a base, top and side walls. At least the side walls are constructed of a flexible material. A venting mechanism introduces the atmosphere surrounding the apparatus into the receptacle at a controlled rate. The receptacle includes means for progressively expanding after being compressed. This progressive expansion creates a vacuum within the receptacle, thereby aspirating a measured volume of atmosphere per unit of time through the venting mechanism. Further provided are means for removing a desired quantity or sample of the retained atmosphere from the receptacle, as required.

Abstract: A floatable marine winch handle is disclosed that is suitable for use on sailing vessels incorporating the utilization of manual sailboat winches required for the raising of heavy cloth sails. The floating marine winch handle is comprised of a hollowed tubular design which is rigid enough to withstand the necessary stress requirement and is of light weight which enables it to displace its weight in water thereby rendering the winch handle retrievable when accidently dropped overboard from a vessel.

Abstract: Transmission shift control guide and detent apparatus includes a mechanism for defining the shift path for any given gear change, and for providing detenting both for ratio selection and for engagement of the selected gear set. A guide plate defines a predetermined track. A pin associated with the transmission shift lever is movable along this track to establish a precise definition of the path for each selecting and engaging movement. The plate also defines a plurality of depressions which form a detent map. A spring-loaded ball is moved over this map by the action of the transmission shift lever. This develops predetermined resistive forces against which the shift lever must be moved during the selecting and engaging movements. Stresses are absorbed in the guide plate rather than in the shift rail.

Abstract: A bicycle pedal comprises a pedal spindle rotatably supporting a pedal body, at least one spring member being engaged with the pedal body so as to absorb shocks caused by axial impact forces imparted to the pedal.

Abstract: The gear reduction system is of the differential type utilizing two ring gears with teeth on their inner circumference and first and second eccentric wheels having external teeth engaging the teeth on the ring gears as they roll about the inner circumference. The first and second wheels have their eccentricities mounted in an offset relationship so as to provide dynamic balancing during operation. By making the number of teeth on one of the eccentric wheels different from the number of teeth on the other, adding the second ring gear and providing appropriate pin carrier means coupled in a given arrangement, a very high gear reduction can be achieved in a single packaging. This gear reduction is equivalent to that heretofore only obtainable by ganging together separate reduction gear systems of this type.

Abstract: The gear reduction system is of the differential type utilizing two ring gears with teeth on their inner circumference and first and second eccentric wheels having external teeth engaging the teeth on the ring gears as they roll about the inner circumference. The first and second wheels have their eccentricities mounted in an offest relationship so as to provide dynamic balancing during operation. By making the number of teeth on one of the eccentric wheels different from the number of teeth on the other, adding the second ring gear and providing appropriate pin carrier means coupled in a given arrangement, a very high gear reduction can be achieved in a single packaging. This gear reduction is equivalent to that heretofore only obtainable by ganging together separate reduction gear systems of this type.

Abstract: An off-highway heavy duty dump truck includes an engine, a torque converter, a shiftable multi-speed hydraulically operated power transmission for driving the truck wheels, and a control system for the transmission. The transmission includes internal clutches which are selectively operated by a solenoid-operated rotary speed range selector valve to effect shifting in neutral, reverse or several forward speed ranges. The control system includes a manually operable multi-position speed range selector switch, sensing devices for ascertaining transmission input and output speeds, a limit switch and rotary switch responsive to the condition and rotary position, respectively, of the rotary range selector valve, and other condition responsive switches.

Abstract: An unbreakable sledge hammer handle includes a conventional, wood or other rigid lower handle portion and a wire rope connector for mounting the hammer head on the top end of the hammer. A pair of collars are fit on the opposite ends of the wire rope connector and secured thereto by applying extreme pressure to the collar which deforms and cold works the interior diameter to fill in the gaps between the wire segments. The sledge hammer head is provided with a cylindrical mounting aperture which is smaller in diameter than the outside diameter of the collar. The hammer head is subsequently heat shrunk onto the collar. The opposite end of the wire rope connector is secured to the wooden handle portion by a sleeve which extends a substantial length over the exterior of the handle portion. The sleeve is riveted to the wooden handle portion and spot welded to the collar.

Abstract: A wrench comprising a gripping member, a handle having a complementary gripping portion at one end thereof, structure for adjusting the gripping member with respect to the gripping portion axially of the handle without rotating the handle relative to the gripping member, and structure pivotally mounting the gripping member on the adjusting structure. The gripping member may have a 60.degree. or 90.degree. included angle or may be arcuate with a gripping surface extending over substantially 180.degree.. In one modification, the structure for adjusting the gripping member is rack and gear, while in another modification, it is screw and nut.

Abstract: A fastener, such as a screw or bolt, has a recessed head for receiving a driver therein. Four arcs intersect, providing a squarish opening to the recess, which has circularly concave walls descending from the arcs to the base of the recess. The driver comprises a shaft having a somewhat spherical head in profile. Four arcs intersect to form the external surfaces and a squarish cross-section for the head. The recessed arcs are not concentric with the head arcs when the fastener and driver are mated, and the arc radii of the recess exceed the corresponding arc radii of the mated head. Transmission of force between driver and fastener is efficient even when the driver is tilted relative to the fastener axis.

Abstract: A cutting machine, especially for foodstuffs such as wurst, forms slices of the product which are picked up on a cylindrical drum which has retractable pins and which, upon take-up of the slices, deposits them upon a plate by swinging downwardly toward the latter. The pins are retracted by the downward swinging movement to release the slices.

Abstract: A cutting apparatus for cutting into suitable lengths a shaped, elongated bar-like workpiece, such as a section bar of steel, which is being fed in continuously. The apparatus comprises a crank mechanism driven by a single, multi-function drive source and adapted to perform the functions of four devices simultaneously, in a timed relation, namely, a device for reciprocating a cutter in the direction of travel of the workpiece, a device for advancing and retracting the cutter relative to the workpiece, a device for driving a clamp which holds the workpiece during the cutting operation. The apparatus includes a cross type universal joint.

Abstract: An apparatus for slitting workpieces has a machine frame which includes a work support, a workpiece stop and a rotary saw which is slidable in the frame. The frame is supported on feet, at least two of which are positioned on a line parallel to the feed path of a workpiece into the apparatus. Another of the feet can be hydraulically withdrawn to allow the machine frame to tilt about an axis defined by engagement of the aforesaid two feet with a bedplate, and thereby to bring the work support and the lower part of the workpiece stop below the workpiece feed path, so that a workpiece may be advanced unobstructed into the apparatus. The apparatus is tilted back to its working position after the workpiece is in its desired position.

Abstract: Apparatus for cutting a tire into a number of segmented pieces utilizes a plurality of pairs of shear-cutting blades actuated by a hydraulic cylinder ram. One blade of each pair is affixed to a carriage movable on a track secured to a frame. The other blade of each pair is affixed to the frame. The hydraulic cylinder ram moves the carriage on the track so as to effect a cutting action of the blades, and result in a tire placed within a tire-cutting area defined by the frame being cut into segmented pieces.

Abstract: Apparatus for cutting a tire into segmented pieces utilizes an even multiple of pairs of shear-cutting blades actuated by a hydraulic cylinder ram. The pairs of blades are arranged in radial symmetry, and each pair of blades comprises an upper blade and a lower blade, both of which have a cutting edge defined thereon, such that each pair of blades operates by action of opposed cutting edges. The lower blade of each pair is affixed to a frame, which may be trailer-mounted for mobility. The upper blade of each pair is affixed to a carriage movable on a track secured to the frame, and oriented with the cutting edge disposed at an acute angle relative to the cutting edge of the lower blade. Diametrically opposing upper blades are disposed at corresponding angles, and adjacent upper blades are disposed at different angles from one to the other.

Abstract: The invention involves a tube for use with a device for obtaining a sample of molten material and providing the tube with a notched entrance or receiving structure whereby to facilitate or promote the inflow of such a material through the tube and into such a device. In this regard, reference is hereby made to my copending application Ser. No. 075, 941 filed Sept. 17, 1979, now U.S. Pat. No. 4,297,902.

Abstract: The invention involves providing a device for sampling molten material which, among other things, comprises a pair of mating sections, each of which preferably has a rear recessed enlargement or head and a reduced front semi-cylindrical extension which when assembled provide a chamber and a tubular formation the latter of which is adapted to accommodate a tube which serves to receive such a material for flow into the chamber.The invention particularly involves providing a tube with a unique form of an entrance.

Abstract: An asynchronous interface between a data input system (computer) and the keyboard multiplexer of an electronic musical instrument (digital organ) includes a pair of RAMs. The interface synthesizes the multiplexed keyboard data stream of the digital organ by swapping read and write operations between the two RAMs. Predetermined key data (WRITE DATA) provided by the computer is written into one RAM during a WRITE interval while key data (READ DATA) previously written into the other RAM is sequentially read out of the latter RAM. The WRITE DATA designates those keys on the organ keyboard which are to be simulated as being active. The read and write operations are alternately applied to each RAM. If the READ DATA matches the key code assigned to a key on the keyboard, the appropriate note is sounded by the organ. The two RAMs can actually be two segregated portions of a single memory.