Abstract: A refrigerant evaporator for use in, for example, an air conditioning system including a fan, blower or the like adapted to establish a flow of air through the evaporator comprises a serpentine-anfractuous evaporator tube and fins attached to the external surfaces of the tube and is characterized by the provision of a ridge wall secured to or integral with a leeward end wall of the evaporator tube and configured to form grooves to collect therein the drops of water condensate which are produced on the surfaces of the tube and fins and which are forced to flow on these surfaces toward the leeward end of the evaporator under the influence of the flow of air through the evaporator.

Abstract: A cooling system for cooling at least one semiconductor component, including a convection heat exchanger thermally coupled to the component and a refrigeration cycle thermally coupled to the heat exchanger and including a compressor, a condenser, a collector, an expansion valve and an evaporator. The evaporator is coupled in series with the heat exchanger to form a coolant cycle for recooling of the coolant. At least one fan is provided for forcibly ventilating the convection heat exchanger. The condenser of the refrigeration cycle is installed in the heat exchanger whereby the fan serves also to cool the condenser. A coolant, in particular trifluortrichlorethane (C.sub.2 F.sub.3 Cl.sub.3), having a boiling point below the wall temperature of the semiconductor component being cooled is used.

Abstract: An endless conveyor carries articles being cooled through a freezing tunnel. Spray nozzles at longitudinally spaced locations along the tunnel expand high pressure liquid nitrogen to substantially atmospheric pressure to create a central flow of cold fluid in association with a surrounding inducer. The nozzles are arranged in an array with a first group being directed downward and toward the entrance and with a second group being directed downward and toward the exit end. A fan disposed in the intermediate region between the two groups creates an upward flow of cryogen vapor into the region that maintains a head of higher pressure vapor at the entrance to each of the inducers. Downwardly directed blowers are located between the array and both the entrance and exit ends in order to assure there is efficient extraction of heat from articles being carried along the conveyor from end to end.

Abstract: In an automatic towel dispenser having a housing containing a washing and a drying chamber for an endless towel passable therethrough and having 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, the first supply chamber being located between the inlet slot and the washing chamber, as viewed in travel direction of the towel, and the housing further containing a second supply chamber for variably stacking a plurality of cleaned towel sections of the endless towel therein, the second supply chamber being located between the drying chamber and the delivery slot, as viewed in travel direction of the towel, the soiled towel sections, after emptying of a given q

Abstract: Two de-fleshing stations are interconnected by a transfer bridge. The first de-fleshing station feeds through its outlet chute, the rear end of the transfer bridge, while the second de-fleshing station feeds through its outlet chute, the rear end of the carry-away conveyor. The transfer bridge is provided with a pair of aligned endless conveyors which are selectively operable so that the hides can be selectively delivered from the first station to the second station, the carry-out conveyor or to an operator for manual handling.

Abstract: A combination lock is provided for a luggage case having a single rotary dial sequentially manipulatable to open or release the lock and enable operating the case latching mechanism. A reset arm extends from the combination lock housing within the luggage which can be adjusted to the combination reset mode at which time rotation of the rotary in accordance with some new desired set of combination numbers changes the lock combination accordingly. On returning the reset arm to the operating mode, the lock can only now be opened by the new combination.

Abstract: This invention relates to a pushbutton operated door lock particularly featured in that a number inputted for the unlocking operation can be very easily selected and changed on the inside of the door. The door lock includes a multiplicity of tumbler rings rotatably supported on a lock shaft with a lock bolt in a casing. The lock bolt has a multiplicity of notches engaging with the respective tumbler rings and is slidably supported along the lock shaft. Each tumbler ring is formed in its peripheral portion with a plurality of lateral bores in each of which an engage pin for restricting the angle of rotation is received for movement into and out of the lateral bore. Pushbuttons engageable with the respective tumbler rings to rotate them individually are associated with pushbuttons for rotating all the tumbler rings together, so that a selected number of tumbler rings are engaged with, or disengaged from the notches on the lock bolt upon rotation of the tumbler rings.

Abstract: A security cover is provided for the lock boxes of vending machine doors and the like wherein a bracket is mounted around the keyway and a closure is hinged to the bracket such that it will swing shut defining an enclosure and can be locked in this closed position with a lock that is accessible only from within the enclosure, there being an opening in the enclosure, preferably through the closure member, permitting access to this locking means to free the closure, thereby providing access to the door lock.

Abstract: A method for constant-measure feed of rod materials comprising a process for bringing a feed member fixed to conveyor into contact with the rear ends of rod materials and conveying the rod materials together with the feed member along guide by the conveyor, a process for causing the forward ends of the rod materials to abut against a movable stopper disposed in a normal position and further conveying the rod materials while holding the rod materials between the stopper and the feed member, and a process for sensing a movement of the stopper for a given distance from the normal position and stopping the conveying operation of the conveyor.

Abstract: A metal drawing compound is described which is formed by dipping or otherwise coating metal drawing stock with an aqueous soap-borate composition having a pH in the range of from about 7.6 to less than about 9.0. The solution can be allowed to dry on the workpiece, or can be used as a wet film and then drawn conventionally. In a preferred embodiment of the invention the soap-borate composition is prepared by admixture with a borate compound selected from the group consisting of potassium pentaborate, ammonium pentaborate and sodium octaborate in neutral pH water of solution.

Abstract: A method is provided for shaping an object consisting of a material which is both elastic and capable of permanent deformation, by deforming said object with a blast of solid particles.

Abstract: A tube shaping machine includes a plurality of dies each having a substantially continuous, unbroken working surface. These dies are mounted with the working surfaces positioned one adjacent to the next so as to form a tube-receiving aperture therethrough, which aperture defines in cross-section regular polygon. The dies are substantially identical in configuration, this configuration being such that reciprocating each of the dies along a predetermined straight line throughout a range of positions between a fully open position and a fully closed position of the tube-receiving aperture maintains a similar regular polygonal cross-sectional shape of said tube-receiving through aperture throughout said range of positions.

Abstract: A column of particulate adsorbent is located within a longitudinally extending stainless steel tube. The pollutant gas to be monitored reaches the adsorbent by molecular diffusion after passing through a diffusion gauze at the diffusion end of the tube, a stagnant diffusion zone and a partition gauze forming one longitudinal boundary of the column. In one embodiment the diffusion gauze is removably mounted in a diffusion cap that may be slid over the tube; in another, the diffusion gauze and the partition gauze are mounted in a unit which in manufacture is fitted and permanently fixed within the tube. The invention establishes that the repeatability problem in molecular diffusion personal monitors lies in the hitherto unsuspected criticality of the stagnant diffusion zone parameters and provides a general solution enabling a good compromise between repeatability and sensitivity without the need for unduly close manufacturing tolerances.

Abstract: This invention relates to an improved apparatus for effecting the high speed testing of hollow articles or containers for leakage. The apparatus includes a normally closed charge valve and a normally open test valve connected in series between a regulated source of pressurized air and the container. A fluidic start signal sets a first fluidic flip flop device to actuate the charge valve to supply pressurized air to the container and energize a first fluid time delay unit which determines the time that the container is to be filled with air. When the first time delay unit times out, it actuates the test valve to connect the container through a flow meter to a test source of pressurized air to measure the flow rate through the container in the event that any leakage is occuring. The output from the first time delay unit also starts a second fluid time delay unit which determines the test period.

Abstract: Circuitry for nulling a signal from a capacitive sensor apparatus with a signal from a reference. The invention includes capacitive sensor apparatus for providing a liquid measurement signal. Also included is reference apparatus for selectively providing a series of reference signals having predetermined amplitudes, the reference apparatus having terminal apparatus for receiving rebalance approximation sequence control signals for selectively controlling the signal amplitudes. The invention further includes null detecting apparatus for detecting the presence of a null, the null detecting apparatus being connected to the capacitive sensor apparatus and the reference apparatus.

Abstract: A multiple segment three-terminal type capacitance probe with segment selection, capacitance detection and compensation circuitry and read-out control for level/density measurements in a fluidized-bed vessel is provided. The probe is driven at a high excitation frequency of up to 50 kHz to sense quadrature (capacitive) current related to probe/vessel capacitance while being relatively insensitive to the resistance current component. Compensation circuitry is provided for generating a negative current of equal magnitude to cancel out only the resistive component current. Clock-operated control circuitry separately selects the probe segments in a predetermined order for detecting and storing this capacitance measurement. The selected segment acts as a guarded electrode and is connected to the read-out circuitry while all unselected segments are connected to the probe body, which together form the probe guard electrode.

Abstract: A system and method for measuring linear displacements, especially wear in he coupling of two rotating shafts. A magnetic pickup is located near each shaft and a magnetic pole located at a fixed position on each shaft induces a magnetic pulse in its associated pickup when the pole passes under the pickup. The pulses are fed to an AND gate and produce an output pulse when they overlap. As wear progresses, the magnetic pulses overlap either more or less, depending on the direction of rotation of the shafts and, correspondingly, the AND-gate output pulse duration increases or decreases. The change in AND-gate pulse duration is a measure of coupling wear and can be recorded or displayed in engineering measurement units.

Abstract: A time-depth integrator for divers to indicate when a diver is approaching or has reached the maximum safe time limit for a dive without requiring decompression procedures when surfacing includes an evacuated chamber with an elongate channel communicating therewith. The channel has a breakable seal and contains an orifice so that when the seal is broken under water, water flows through the orifice into and along the channel to the evacuated chamber. Indications along the length of the channel show how far water has progressed in the channel and indicate the maximum safe limit and approach thereto.

Abstract: An apparatus for inducing high frequency out-of-phase, vibrations in adjacent span-wise panel portions of a plate type structure, such as an airfoil blade of a gas turbine engine. The apparatus includes a novel bifurcated duct for conducting and directing two out-of-phase streams of gaseous flow, and a uniquely structured air chopper which generates the two out-of-phase gaseous streams. The duct has an upstream end with which the output of the air chopper is in communication, and a stepped-down downstream end at which the airfoil blade (or other plate type structure specimen that is to be tested) is held, supported, and positioned in a chord-wise direction, such that the two out-of-phase gaseous streams impinge upon, and induce the same high frequency vibration in, two preselected, adjacent, span-wise panel portions of the specimen, thereby the panel portions vibrate out-of-phase.

Abstract: For testing wooden poles, a transmitter unit including a piezo electric transducer, energized to produce repetitive pulses of ultrasonic frequency, is held against the pole. The transmitter unit produces an audible sound synchronously with each ultrasonic pulse. A portable receiver unit having a probe coupled to a piezo electric transducer is held against the pole. This receiver unit includes a signal level comparator which causes a lamp to flash on for each received ultrasonic pulse above a predetermined amplitude. The receiver is held in a plurality of positions and readings are noted where the lamp flashes synchronously with the audible signal. From these readings the strength remaining in the pole to resist bending forces is calculated.

Abstract: An apparatus for and method of characterizing an acoustic field, and particularly of visually characterizing the field. An acoustic receiving transducer means is moved to a plurality of predetermined coordinate and angular positions in the acoustic field, and for each such position an electrical signal indicative of a parameter of the acoustic field is stored in a memory. The information in the memory is selectively retrieved to activate an electronic display means, and to expose film if desired, to provide a visual "map" of the acoustic field parameter detected.

Abstract: A major problem in the manufacture of optical fibre cables is the strain to which the fibres are subjected, which strain could damage the fibres. To enable this strain to be monitored, and hence remedial action to be taken, one or more metallic elements are incorporated in the cable, each such element with its insulation being similar in thickness to an optical fibre with its sheath. The electrical resistance of the metallic elements varies very little with temperature, but does vary with strain, so by monitoring resistance, one monitors strain.Although mainly intended for use during manufacture, the method can be used whenever strain monitoring is needed.

Abstract: A vortex-shedding flowmeter comprising two stationary vortex-shedding cross-members (i.e., bluff bodies) disposed transversely to a stream of fluid. Each cross-member has a bluff face with sharp Karman vortex generating edges with independently selected edge to edge widths d of from 10 to 40% of the inside width of the conduit through which the fluid flows and lengths 1 of from 0.3 to 2.0d. The second cross-member is disposed downstream of the first cross-member a distance of from 4 to 15 times the width d of the first cross-member. Any sensor may be used in any location provided it or they sense the Karman vortices generated by co-action of the two cross-members. This flowmeter provides strong signals with a high signal to noise ratio and high Strouhal number.

Abstract: The measuring journal according to the invention permits the construction of a measuring body which solves the troublefree transmission of a force between the structural elements, when measuring is carried out with the conversion of forces to electric signals, while in place of the shear- and bending stress, the mechanical stress is used for measuring-technical purpose. The measuring journal contains measuring elements connected to a central body and are developed as a longer and as a shorter measuring element. The torsional axes of the measuring elements are parallel with each other, are arranged symmetrically on both sides of the plane determined by the influence lines of the force bringing about the torsion and by those of the reaction force and are eccentric in relation to the geometrical axis of the measuring journal, while the plane determined by them is perpendicular to the plane determined by the reaction force and torsional force.

Abstract: The invention is directed to an apparatus for drawing off powder in metered quantities of from about 0.5 to 10 mg, comprising a tubular member having a dosing chamber at one end, the chamber having walls consisting of porous material and the outer end of the chamber walls being air-tight, and being provided at the other end with a means for connecting the tubular member to vacuum and/or compressed air sources. The invention is also directed to a method of using such an apparatus.

Abstract: A fluid flow sensor includes a housing defining a flow path for fluid flow therethrough. A valve member slidably engages the housing and moves with respect to a fixed cylindrical metering member in response to fluid flow through the flow path. A spring biases the valve member to a no-flow position. A portion of the valve member engages a seat to prevent reverse fluid flow. The metering member receives one end of the valve member while a reluctive displacement transducer is received by a bore extending into the valve member from the other end.

Abstract: A sample probe for obtaining relatively small subsurface gas samples for analysis during geo-chemical exploration. The probe is comprised of a long slender shaft capable of being driven into the soil and a hammer assembly which mounts to the shaft and is utilized to drive and remove the shaft. The shaft includes a passage for removal of interstitial gas and the passage may be mechanically sealed or opened while the probe is in place in the soil. The probe shaft also includes temperature, soil humidity and soil pH sensors which are utilized to obtain additional parameters to be considered during analysis of the gas samples.

Abstract: Apparatus and method for tapping and extracting an oil sample from a high pressure oil filled pipe-type transmission cable system. The system voltage is very high. Pipe drilling must be carefully controlled to preclude oil and oil pressure release, and to prevent cable conductor contact by the drill. Valve means are attachable to a pipe to be tapped. A fitting having passageway means is attached to the valve. A drill bit extends through the fitting and valve, when in an open position, and is operable to drill a hole through the pipe wall. Sealing means in the fitting are in operative engagement with the drill bit shank and prevent oil and pressure release.

Abstract: A movable member, including a first piston in a hydraulic cylinder, is biased toward a first position by a reset spring and toward a second position by a trip spring which is compressed between the first piston and a second piston in the same cylinder. The second piston is disposed for limited floating movement relative to said movable member. Hydraulic fluid under pressure is admitted into a first chamber between the first piston and the adjacent end of the cylinder, and a constricted fluid passage in the movable member enables the hydraulic fluid to flow between the first chamber and a second chamber defined by the second, floating piston and the other end of the cylinder. With equal, relatively high fluid pressure in both chambers, the trip spring is charged and the movable member is held by the reset spring in its first position.

Abstract: A tool arm assembly adapted to be supported on a machine tool adjacent a workpiece rotating spindle has a tool carrier mount on a flexible, deformable portion; a bi-directional actuator for operating manually adjustable motion transmission means is operated by a remotely controlled motor device which normally is out of operating engagement with the actuator so that the motion transmission means can be adjusted manually.

Abstract: A lever operated control for two transverse shafts connected for rotating drive control devices. The lever rotates in a first plane normal to a shaft and in second plane in the direction of the shaft. Two spring elements connect the shafts and lever maintaining the lever in a neutral position until operated.

Abstract: A connecting rod for an internal combustion engine comprising a rod body having a fiber bundle reinforcement integrated therein. The fiber bundle reinforcement extends longitudinally in a central rod portion of the connecting rod and is exposed at the peripheral surface at a small end portion of the rod where a bore is provided for connection with a piston pin. The fiber bundle reinforcement is exposed in the region of the bore adjacent the central rod portion.

Abstract: A signal from the speed sensor is extracted at a time period which is later than that for detecting a signal from the engine load sensor by a predetermined amount of time. The speed signal thus obtained is used to decide whether or not shifting of the automatic transmission is necessary, so that any incorrect changeover between two or more shift patterns or shifting between two or more of shift positions in a shift pattern is prevented from being selected due to a delay in the response of the vehicle speed relative to the depression of the accelerator pedal.

Abstract: The disclosed control system regulates changes of gear ratio in an automatic transmission for a vehicle. A supervisory control arrangement monitors operator input commands through the shift range selector lever, and receives a desired-ratio command either from a shift point computer or from a manual gear shift selector. When the supervisory control arrangement determines that the desired-ratio signal differs from the actual ratio, the monitoring function is interrupted and a shift-initiate command is provided. This command is utilized to assign certain components for use in a shift quality control arrangement, for effecting the controlled ratio change. A torque output signal from the vehicle drive line is used in conjunction with the shift quality control arrangement. After the shift is completed, the previously assigned components are released and the supervisory control arrangement resumes the monitoring of the desired ratio as contrasted to the actual gear ratio.

Abstract: A screw type shaving cutter and a method of producing the same. A large number of cutting edges are formed on the flanks of the thread of the cutter. Each cutting edge is inclined along a curve or a straight line in the trailing direction as viewed in the direction of rotation of the cutter in use. This shaving cutter is produced by forming a screw body by cutting a metal blank into a form of a screw, and forming a number of cutting edges on the flanks of the thread of the screw body by reciprocatingly moving a cutting tool on the flanks of the thread, while rotating the screw body continuously in one direction.

Abstract: A method of making a rotary rock bit is described comprising the steps of forming a one piece bit body having at least two legs extending downwardly therefrom, drilling a bore through each leg, providing a cone cutter for each leg, positioning each cone cutter to be aligned with the bore of a respective leg, inserting a separate journal pin through the bore of each leg until a portion extends into the cavity of the registering cone cutter, providing a thrust element into the cavity of each cone cutter and retaining it therein to form subassemblies, and securing each journal pin to the bore of the respective leg.

Abstract: This is concerned with a wire stripping mechanism and specifically is concerned with a mechanism for removing the insulation from the end of electric wires where the insulation is of a construction that is quite difficult to remove. More specifically the stripper is concerned with dealing with quite small wires where the insulation is thin and quite difficult to remove.

Abstract: An open-mouth power tong of the type used to make up and break out threaded connections between tubular members includes an improved mechanism for properly aligning the pipe when it is gripped by the tong so that the pipe may be rotated evenly about its axis.

Abstract: A narrow band of a flexible, spring material is formed into a loop and has equally spaced, laterally extending slots threadedly engaged by a worm on a handle extending tangentially of the loop so that rotation of the handle adjusts the size of the loop.

Abstract: An auxiliary tool kit for a socket wrench set is provided comprising an easy-out, an easily grippable extension with a rigid hand grip thereon, and an adapter extension for mating with an electric drill or alternatively, the kit is adapted for mating with a ratchet wrench.

Abstract: In a reciprocating travelling shear in which a tool post travels reciprocatingly in the travelling direction of a travelling material and a cutting tool held by the tool post is made to move vertically by press mechanism to cut the material, the press mechanism is driven by a first DC motor, which is controlled by first numerical control means, the reciprocating travelling of the tool post is controlled by a second DC motor, which is controlled by second numerical control means, and the second numerical control means supplies a cut command to the first numerical control means thereby to drive the first motor when the tool post has travelled a predetermined distance.

Abstract: Precision cutting of cove molding in all commercial sizes and designs is obtained by an apparatus which includes a flat bed plate having a straight saw blade slot formed therethrough and a power saw guideway along the slot. A rest for cove molding extending away from one side of the saw blade slot at an angle of 45 degrees thereto includes opposite side flat surfaces which rise from the top of the bed plate at angles of 45 degrees to the bed plate, the rest having a flat bottom surface to engage the bed plate. As an attachment to existing saw table equipment, the cove molding rest may have a bottom recess including an end stop surface to fit over a protractor guide of the existing equipment. All customary angle cuts of the cove molding are greatly facilitated.

Abstract: Chain saw support apparatus is disclosed for supporting and counterbalancing a portable power chain saw so that it may easily be manually swung by its handle between raised and lowered positions for cutting of a log or the like supported therebeneath.

Abstract: The electronic musical instrument is provided with a tone production means having tone production channels less than the total number of keys, a performance mode change detecting means, and a means for controlling tone production assignment of the tone production channels.The tone production assignment is controlled by depressed keys to one of the detecting means to produce a tone from one of the channel groups grouped according to the output of the detecting means. The selected tone production channel corresponds to the key group which the depressed keys belong to.

Abstract: An electronic organ, particularly of the institutional type employing classical voicing, having Swell and Great manuals as well as a full pedalboard wherein the manuals and pedalboard are multiplexed simultaneously to produce a plurality of synchronized serial data streams. Intermanual coupling is accomplished by connecting the data stream from one manual to the footage generation cirlcuit of another manual, and footages are generated for each manual by utilizing tapped shift registers introducing controlled amounts of delay of the keyboard data before demultiplexing thereof. There is a bank of demultiplexer-keyers for each voice, such as flutes, principals, complex and percussion, which receive the serial data streams from one or more of the footage generators. The demultiplexer-keyers are supplied with tones and function to demultiplex the serial data streams and provide to the voicing circuitry tones selected in accordance with the keydown pulses in the serial data streams.

Abstract: An electronic music book for simplifying the storage and retrieval of musical scores in which a control panel operates electronic memories to locate a song in the memory for a musician's reading thereof. Optional modules may be added to the memory to expand the lilbrary of songs stored by the book. A variety of additional features may be included in the music book, such as audio playback of a selected song, tempo and rhythm control, and a temporary memory for musical works entered through a musical keyboard in the control panel. The book is adapted to be attached to a music stand and may be battery operated for portable use or permanently connected to a source of A.C. voltage.

Abstract: An automatic accompaniment circuit which is provided with a code detector for scanning key switches to detect the code of a depressed one of the key switches, a latch circuit for latching the output signal of the code detector by a bar clock pulse which is produced for each bar, a comparator for comparing the output signals of the code detector and the latch circuit to yield a coincidence signal, and control means for counting the coincidence signal from the comparator by a desired number of bars using the bar clock pulses and then providing a command signal for changing the pattern of an automatic accompaniment.

Abstract: A reverberation effect is produced in a musical tone generator of the type in which waveshape data points are sequentially and repetitively read out of a memory at a rate corresponding to the fundamental pitch of a musical tone. The reverberation effect is obtained by having a second memory storing waveshape points which are read out simultaneous with those from the first memory. The second data set is scaled by the ADSR envelope function and at selected echo time spacings is pointwise added to the data stored in the first memory. The data read out of the first memory is converted to an analog musical signal having a reverberation effect during the attack or release phase of the musical tone.

Abstract: A hybrid organ is disclosed wherein many of the musical tones comprising the complete musical instrument are produced by wind blown pipes. Other tones are produced by an electronic tone generating system and produced by loudspeakers. The electronic tone generating system is adapted especially for this purpose and includes simplified means for keeping the electronically produced tones in tune with the organ pipes in spite of the fact that the pipes change their pitch with even slight temperature and other atmopsheric changes.

Abstract: The invention concerns a mechanical and electrical coupling device for charges, particularly military charges. Such a coupling consists of a combination of hanging, steadying and electrical connection means arranged in such a way that the locking of the hanging means simultaneously and automatically ensures the steadying of the carried charge in all positions with respect to the carrier charge, as well as their electrical connection, without there being any need to perform adjustment operations. A plurality of charges may thus be firmly connected together for purposes of transporting them under an aircraft and subsequently ejecting them one by one, beginning with the one furthest from the aircraft. The invention is applied to the dropping of projectiles in strings.