Abstract: A distillation/absorption engine including apparatus for utilizing a lower boiling point, working fluid and a higher boiling point, absorption fluid, the absorption fluid having a relatively high degree of absorptivity for the working fluid. The apparatus includes a distillation column for separating the working fluid from the absorption fluid and a condenser/storage system for storage of the separated working fluid which is condensed and stored as a condensate. An absorption reboiler is used to revaporize the condensed working fluid. The revaporized working fluid is superheated in a superheater before producing mechanical energy in a mechanical expansion engine such as a turbine or the like. Thermal energy for the absorption reboiler is obtained from the heat of absorption generated by absorbing with the absorption fluid the spent working fluid from the mechanical expansion engine. Absorption of the spent working fluid also lowers the backpressure for improved efficiencies.

Abstract: An elongated arm, pivotally mounted at the center to a support structure includes a large, bulbous reservoir attached at either end thereof. The arm is hollow and a passageway therethrough joins the two reservoirs. A volatile fluid which vaporizes at a relatively low temperature (125.degree. F. or less) is placed within the reservoir/passageway to provide the activating fluid for the device. A first insulated chamber including a heat exchange means with source of heat input in the walls thereof encapsulates each reservoir when the reservoir is pivoted to its lowermost point, causing the volatile liquid to vaporize and flow to the other end where it condenses and causes that end to lower. To hasten condensation of the fluid, a second, cooling insulated chamber encloses the reservoir when it is in its uppermost position.

Abstract: This invention relates to foundation work of structures in a very cold district, especially to a method of preventing the upward movement of foundation pillars in weak ground in which concrete piles are required as foundation pillars. Concrete piles are driven to a permanent frozen stratum passing through a weak stratum which repeats freeze and melt conditions according to the atmospheric change and the like, and then the concrete piles themselves are cooled artificially or by utilizing the ultra-low temperature of the permanent frozen stratum during the period of refreeze of the weak stratum in order to make frozen parts in the weak stratum around each concrete pile.

Abstract: A method of cooling a fluid medium in a heat exchanger by means of an endothermic heat of solution of crystals which are in contact with a heat exchanger in the base of a closed column where the solvent dissolves the crystals whereby to form a saturated solution which cools the heat exchanger, and applying heat to the saturated solution in an upper part of the column to vaporize the solvent and pass it to a condenser, the resulting super saturation causing recrystallization with the crystals sinking to the base of the column, the solvent condensate passing back to the base of the column to continue the endothermic solution of the crystals.

Abstract: The specification discloses a system and process for producing discrete chilled products having preselected weights from a semi-fluid mixture. The semi-fluid mixture is pumped along a distribution path to an extrusion manifold which extrudes a continuous sheet of the mixture. The continuous sheet is directed through a chilling station where it is chilled and firmed such that the sheet maintains its extruded cross-sectional configuration. A plurality of slicers continuously slice the continuous sheet of material into continuous lengths. A cutter periodically severs the continuous lengths at predetermined intervals to provide a plurality of discrete products having predetermined weights. The pumping rate, rate of travel through the freezer and periodic severing of the continuous lengths may be selectively varied in order to maintain any desired weight of the discrete products.

Abstract: A cooling tunnel for cooling a continuously running belt or partial belt section by means of a low boiling liquefied gas to a predetermined temperature has its cover in the form of a chamber which has a connection near the tunnel entrance for supplying the liquid cooling agent and a connection near the tunnel exit for discharging evaporated cooling agent with at least one pipeline for returning the evaporated cooling agent to the cooling tunnel.

Abstract: Apparatus for converting a conventional insulating picnic cooler or the like into a refrigerator includes a small container, disposable within the cooler, for dry ice. A rectangular frame insertable within the interior of the cooler includes a pair of refrigeration coils which are disposed in proximity to opposed side walls of the cooler. One end of each of the coils connects to the dry ice container. The other end of the coils connects to a manually adjustable valve having a pressed blow-out section for relieving excess pressure. The valve is disposed in the exterior of the container. Gas flowing through the valve from the coil passes to the atmosphere through an indicator having a body of fluid in a transparent window so that bubbles produced upon passage of the gas are visible and allow manual adjustment of the valve to control the rate of gas flow and thus the rate of sublimation of the dry ice and the temperature within the cooler.

Abstract: A post to extend through the pierced hole in an ear lobe. One end of the post has a stop that is positioned against one surface of the ear lobe. The opposite end of the post has a small male snap connector portion. A smooth and flat back with a small female snap connector portion therein is snapped on the post against the other surface of the ear lobe to retain the post in the pierced hole, but if the post or the back is pulled, the back automatically releases from the post to prevent injury to the ear lobe. The back has a barrier that prevents the post from passing completely through the back. The stop has and the back may have a connector portion for attaching interchangeable ornaments. When worn with no ornament attached, the earring is essentially nonsnaggy. Interchangeable ornaments are provided with mating connector portions to hold the ornament to the post during normal activity but whenever an ornament is pulled, to automatically release the ornament from the post to prevent injury to the ear lobe.

Abstract: Articles of jewelry, such as rings, bracelets and the like, in which the same are of hollow construction including an imperforate liner normally in contact with the wearer. An outer member in generally surrounding relation with respect to the liner member is provided with a plurality of shaped orifices extending through the plane thereof. Inserts of contrasting color and corresponding shape and positioned within the orifices and soldered to the concealed surface of the liner. Where necessary, end plates overlie the interstice between the liner member and the outer member.

Abstract: A dynamometer including a housing comprised of first and second parts relatively rotatable about an axis and defining a chamber, at least one brake element within the chamber carried by each part, the brake elements being in adjacency and relatively movable within the chamber, a motor and spring for moving the elements to frictionally engage and disengage the same, coolant inlet and outlet ports to the chamber, and a base mounting the housing for rotation about the axis, a transducer connected to one of the housing parts and the base, and a coupling device connected to the other of the parts and including a chuck for driven engagement with a mechanical power source, the coupling being axially extendable and allowing limited play in the radial direction.

Abstract: A universal joint includes first and second yokes with a bore extending through each yoke. A cross trunnion having cylindrical bearing pins is carried between the first and second yokes with the bearing pins supported in the bores of the yokes. Hollow cylindrical bearing housings carried by the yokes containing roller or slide bearings may be used for journalling the bearing pins in the yokes. A stop member is carried by each of the yokes, and each stop member has an end face which is arranged to engage the end face of the other stop member to limit the amount of angular deflection of the universal joint. In one embodiment, the stop members are formed by limit bolts extending axially from each of the yokes into an axial bore of the trunnion. In another embodiment, the stop members are formed by axially adjustable stop collars carried coaxially on each yoke.

Abstract: An adjustable length circular knitting needle assembly includes a pair of knitting needles having distal pointed ends and a cord extending between the proximal ends thereof. At least one of the needles is provided with a hollow tubular portion which houses a reel assembly to which one end of the cord is secured. The reel assembly includes a distal idler wheel and a proximal spool wheel, and an endless belt secured therebetween. The cord passes through the tubular portion and is secured to the endless belt. A folding tab handle is joined to the spool wheel shaft to rotate the spool wheel and drive the belt, permitting the cord to be taken up or released as desired. A slot or window is provided in the tubular portion to permit access to the tab handle without disassembly of the needle.

Abstract: A stocking and method of making a stocking in which an aerated region is knitted from a synthetic yarn, such as nylon, and another softer, more moisture-absorbent yarn, such as cotton, to provide a greater surface area of the synthetic material on the exterior surface than on the interior surface and a greater surface area of the other yarn on the interior surface than on the exterior surface and in which the aeration is provided by knitting air flow interstices in that region of the stocking.

Abstract: A wholly automatic commercial laundry in which soiled laundry is automatically routed to available washing machines, is automatically unloaded, conveyed, and loaded into one of several dryers which is available, or is conveyed directly to a finishing station when drying is not required. A unique programmable selector permits selecting any of several preprogrammed washingcycles, and modifying these cycles in accordance with the laundry to be washed. The selector also provides the necessary information for routing of the batches of laundry from the washing machines to the dryers, for selecting one of several drying cycles, and for routing the laundry to a desired finishing station.

Abstract: An apparatus for transfer printing of discrete articles comprises a frame having a rotating heat drum mounted therein, and a planar work surface member which extends perpendicularly of the heat drum, and includes a guide member at the forward end thereof. A first endless belt extends over the heat drum and the guide member, and has an upper, feed side thereof supported on the work surface member, thereby forming a planar work area for laying out and aligning a transfer and an associated article to be printed. A second endless belt is mounted in the frame, overlies a printing end of the first belt, and translates syncronously with the first belt. The first and second belts are urged against the heat drum, whereby translation of the belts conveys the assembled transfer and article from the work area to a position between the belts for printing under heat and pressure, and subsequently into a discharge tray.

Abstract: An automatic washing machine which automatically carries out the steps of washing, rinsing and dehydrating in accordance with a preselected program, comprises an indication means for indicating the occurrence of abnormal operation if it occurs in the steps of washing, rinsing and dehydrating, in such a manner that the indication mode differs from cause to cause of the occurrence of the abnormal operation.

Abstract: An apparatus for tanning skins in a rapid and efficient manner includes a closed tanning tank and a plurality of storage tanks for storing the various liquids employed in tanning skins. The skins to be tanned are hung in the tanning tank. An air tight door is provided in the tanning tank for loading and unloading the skins. The tanning tank also has an inlet/outlet pipe for filling and emptying the tanning tank, which pipe is connected through a valve to an elevation pump. A respiration pipe having means for producing a gas which is chemically inert to tanning liquids is also provided on a tanning tank. Each of the storage tanks has an outlet pipe with a valve for controlling the flow of liquid therethrough which is connected to the elevation pump. Some of the storage tanks are airtight and have outgoing pipes connected to an outgoing pipe on the tanning tank to permit gases to flow between each of those storage tanks and the tanning tank.

Abstract: A door knob on a knob sleeve or spindle which is adapted to be blocked from rotation is connected to such spindle by a break-away ring and is otherwise rotatable on the spindle. The break-away ring is mounted about the spindle between the end of the fixed hub of the lock chassis and an internal flange on the knob, and has a pair of radial lugs extending inward to key it to the spindle and a pair of axial lugs extending into the knob flange to key it to the knob. One pair, preferably the axial pair of lugs, is adapted to break away under excessive knob turning force to disconnect the rotative connection of the knob to the spindle.

Abstract: A lock cylinder incorporating a front retainer for a sidebar and a body counterbore to receive same, a core shell having a torquing engagement extension and an indexing protrusion to properly index the insertion and removal of the core, a torquing tumbler for applying rotational torque to the core, an improved centering spring, an inter-connection of a sidebar and a body engaging link of a removable core differential mechanism, a method of yieldingly biasing the engaging links outwardly from the core assembly, and improved combinating capabilities by arrangements of gatings in the rotary disc-tumblers for variable incrementations and the arrangement of tumblers and spacers of various thicknesses to achieve a variable spacings of the bittings.

Abstract: An adaptation for a mortise lock having a double-ended primary lock "cylinder" of "keyhole" cross-section mounted through a conforming opening in the mortise lock case, provides for use of key-removable lock cores and increases security by preventing removal of the lock cylinder except after removal of a core with a special control key. Two key-removable cores are mounted in chambers at opposite ends of a housing which fits through the cylinder-receiving opening of the mortise lock case. A bolt-actuating cam between the chambers lies within the case and is alternatively engaged by shuttle throw plug members respectively moved to engaged position by thrust of a key in one of the cores and is operated by rotation of such key. The cores require a special control key for removal and are shaped or mouned so as to project laterally from the lock cylinder and thereby to block passage of the cylinder out of the conforming opening of the lock case until removed by a control key.

Abstract: In a press for the hydrostatic extrusion of tubes, including a mandrel unit permanently inserted in the pressure chamber of the press and being movable between two axial positions, the unit comprising a mandrel and a tubular sleeve which during the extrusion transmits forces acting on the mandrel to a force-absorbing unit in the press, the sleeve being so constructed as to form an annular gap between the sleeve and the pressure chamber wall, and a stop ring in the gap forming an interference fit with the pressure chamber wall, the sleeve having stop faces thereon designed to cooperate with end faces of the stop ring so as to determine the limit positions of the axially movable mandrel unit.

Abstract: The disclosure relates to a method of bending elongated materials such as pipe by applying a compressive primary bending force to the material at locations on either end of the portion of the material to be bent and locally stimulating bending of that portion of the material by the application of heat or a secondary bending force. The end portions of the materials are engaged by clamps, each clamp having an arm extending normal to the principle axis of the material. The compressive primary bend force is applied by exerting a force on locations on the arms displaced from the principal axis of the material, which force tends to draw the ends of the arms together.

Abstract: A thread rolling machine is disclosed wherein a continuously adjustable thread means is used to adjust the relative phase timing between two thread rolling dies and the feeding of a workpiece by the feed means. This timing substantially eliminates any mismatch of thead rolling by the two dies. A double ended thread rolling machine is also disclosed with timing of the two dies relative to the feed of a workpiece accomplished at one end of a workpiece and then the continuously adjustable thread means is used to adjust the relative phase timing of the thread rolling operation on the other end of the workpiece. The above description is merely one form of the invention and is not to be construed as limiting on the scope of the invention.

Abstract: A thread rolling machine is disclosed wherein a continuously adjustable timing screw is used to adjust the phase of the feed of a workpiece relative to the instantaneous position of a rotary die cooperating with a stationary die. This timing substantially eliminates any mismatch of thread rolling by the two dies. The rotatable timing screw adjusts the peripheral position of a cam follower relative to a feed cam by moving the fulcrum point of a bell crank lever on which the cam follower is carried. Rotation of the timing screw adjusts the peripheral position of the cam follower relative to the feed cam. The above description is merely one form of the invention and is not to be construed as limiting on the scope of the invention.

Abstract: A device for bending ring segment-shaped plate blanks into conically shaped parts includes a pair of roll stands, a top roller, or a centrally positioned pair of top rollers supported between the roll stands, and a pair of side rollers positioned on either side of the top roller and also supported between the roll stands. Means are provided for driving the blanks between the top roller and the side rollers to form the conically shaped parts. At least one abutment member is carried by the device for engaging and guiding the short arc edge of the plate blanks. An elastic and adjustable counter pressure mechanism is connected to the abutment member so that at least a component of the bearing pressure on the abutment member is transmitted to the counter pressure mechanism for controlling the means for driving the plate through the rollers to form the conically shaped parts.

Abstract: A draw bead made integral with the die plate or as an insert and having alternating pressure applying surfaces and grooves which will thicken the metals drawn across it minutely at the grooves and will distribute the metal evenly at the pressure surfaces. The draw bead is preferably placed close to the draw radius of the die cavity, and it can have various shapes to compliment the shape of the die cavity. Substantially less blank holder pressure is required because the draw bead restrains the flow of metal and better distributes the metal as it is drawn into the die cavity, and since the draw bead is close to the draw radius, a smaller blank holder is possible. The draw bead can be used to form a portion of the drawn part thereby eliminating a secondary forming operation if the part requires a flat flange about its trim line.

Abstract: A corrugated metal sheet is incrementally bent perpendicularly with respect to its corrugations, by repeatedly transversely indenting upwardly the bottoms of the corrugation valleys so that the indentations extend in lines transversely across the sheet and extend into the corrugation sides which interconnect the valleys and ridges of the sheet. Each line of indentation causes the sheet to bend to some degree without detrimental stretching or drawing of the sheet.

Abstract: A coal-shale interface detector for use with coal cutting equipment consisting of a reciprocating hammer having an accelerometer mounted thereon to measure the impact of the hammer as it penetrates the ceiling or floor surface of a mine. Additionally, a pair of reflectometers simultaneously view the same surface, and the outputs from the accelerometer and reflectometers are detected and jointly registered to determine when an interface between coal and shale is being cut through.

Abstract: Methods in which humans or other mobile bodies are exposed to volatile tracking and marking substances, the vapors of which are detected by ionizing gaseous samples, analyzing the ions in a drift field, and detecting at least a portion of the ions.

Abstract: When analyzing exhaust gases from vehicle internal combustion engines according to the simplified method, where the inertia and the internal losses of the engine are used as braking factors and the engine, during a given period of time, is subjected to a series of short incidents of fuel supply increases above idling speed level, it is important to ensure that all play is eliminated in the transmission path between the monitoring unit determining the fuel increase incidents and the fuel supply means. The fuel supply increase incidents should furthermore be selected so with respect to resulting changes in effective mean pressure (PME) and speed (RPM), that the fuel supply means, during each incident, will be displaced in a positive direction only, until the engine returns to the idling speed level.

Abstract: An electromagnetic type fluid flow meter for measurements of conductive fluids which utilizes an interchangeable disposable electrode sensor assembly with a common magnetic drive assembly. The electrode sensor assembly includes a tubular member adapted to be connected into a flow line and which includes sensor electrodes and an electrical connector for providing external electrical connections to electrodes. An electromagnetic assembly includes a C-shaped magnetic core and a winding on the core. Parallel guide members on the electromagnetic assembly receive mating guides on either side of the tubular member in sliding engagement to hold the tubular member between the poles of the magnet with the electrodes properly oriented with respect to the flux lines. The electromagnetic assembly includes an electrical connector which engages the connector on the tubular member when it is inserted in the guides.

Abstract: Apparatus for continuously measuring rates of flow of a liquid has two containers arranged serially in the liquid flow path and each associated with a self-levelling balance beam. Beam displacement is measured capacitively and used to alter current fed to a coil tending to maintain the beam level. The magnitudes of the currents necessary to maintain the beams level is a measure of the liquid level in the containers and is used to keep the liquid levels between pre-determined upper and lower values by controlling valves through which the liquid flows into the containers. The differentials of the currents with respect to time when the liquid levels are falling in both containers, are added. If the liquid level in the first container is rising, however, no differential is provided whereas the differential of the second container liquid level, when rising, is supplied to the adder but negatively. The adder provides an output which is a measure of the volume of liquid supplied by the apparatus.

Abstract: An ultrasonic flowmeter of the upstream/downstream sonic propagation type includes two transducers mounted externally on the same side of a flow conduit. The transducers are coupled to respective sonic probes which transmit and receive acoustic pulses between the transducers through the fluid by "bouncing" the pulses off the opposite pipe wall. Additionally the meter maintains a smooth bore in the measurement region so that the acoustic pulses are refracted at the probe/fluid interface and hence propagate along a sonic path that varies depending on the sonic velocities within the fluid and the probe. An acoustic path of known length is included within at least one of the probes along which a portion of the generated acoustic pulses propagates, thereby providing for a third sonic measurement which represents the transmit time in the probe.

Abstract: An armored rotameter capable of accurately measuring low flow rates, the meter including a metal body provided with a bore defining a vertical flow tube having a lower inlet into which a fluid to be metered is admitted and an upper outlet from which the fluid is discharged. Disposed in the flow tube is a float having a guided stem which includes a lateral pin projecting through a slot in the front wall of the meter body, the pin riding up and down the slot as the float moves up and down the tube as a function of flow rate. The pin is coupled to one end of a bar magnet link that is external to the meter body and is swingable about a center pivot, the link being caused to swing to an extent and direction in accordance with float movement. The slot and link are sealed by a pressure plate secured to the front face of the meter body.

Abstract: Water flow rate in channelized, flowing bodies of water is measured by first obstructing the flow of water in the body causing a rise in the water surface upstream from the obstruction. This rise in upstream water surface is communicated to a point above the obstruction and measured thereat. The measurement is then converted to a water flow rate. A device for measuring water flow rate includes means for producing an obstruction of water flow in the body of water thus causing a rise in the water surface upstream from the obstruction, means for communicating the rise in upstream water surface to a point above the obstruction, and means for measuring the rise at that point, all secured to a frame.

Abstract: A portable flow-measuring device for determining the volumetric flow rate of a flow stream includes a generally cylindrical flow conduit insertable into a sewer pipe and a reservoir member disposed atop the flow conduit and being in flow communication therewith. An inflatable tubular collar is disposed completely around the flow conduit such that when inflated it seals the area between the sewer pipe and the flow conduit such that all flow is funneled into the flow conduit. The reservoir member is closed at one end and includes a weir plate sealingly attached over the opposite and otherwise opened end. As flow enters through flow conduit, reservoir member will fill until the crest of the opening of the weir plate is reached and then this flow will exit from the reservoir member through the opening in the weir plate.

Abstract: A volumetric flow measuring device to measure liquid flowing in a pipe wherein a control pipe is sized for receipt in telescoping relation in the pipe and includes seal means to engage the pipe and to constrain flow through the pipe into and out of the control pipe. The control pipe is of a predetermined cross sectional area and a float member is captivated within the pipe to rise and fall depending upon the water level in the control pipe and the float includes a liquid flow velocity measuring device including a paddle wheel journaled on the float with a portion extending below it to move in response to fluid flow beneath the float and the device further includes a liquid depth measuring device to monitor the level of the float in the pipe and hence the liquid level in the pipe. The device further includes a recording device to record the level of the float in the control pipe as measured by the measuring device and, also, the flow past the float.

Abstract: A flowmeter apparatus and method for use in measuring the quantity of liquid beverage passing through a tubing, the apparatus including a flowmeter wheel adapted to be turned by the flow of beverage through the tubing. The flowmeter wheel is interposed in a light path between a light source and a light detector with a plurality of apertures in the flowmeter wheel permitting light passage through the light path to the light detector. Rotation of the wheel creates a series of light pulses that are detected by the light detector and are electronically counted to thereby provide an indication of the amount of beverage passing through the flowmeter and, correspondingly, the tubing.

Abstract: An ultrasonic thermometer comprising a probe which is coupled to a magnetorestrictive transmitter and has discontinuities to reflect for each ultrasonic pulse applied to the probe a multiplicity of echoes of which the detection provides a measure of the ambient temperature of the probe. The probe is disposed in a tubular jacket. The probe and the jacket are separately anchored at respective ends, which may be proximate or remote, so that substantially all the probe moves relative to the jacket to rupture bridges or welds which may be formed between the probe and the jacket.

Abstract: A method and apparatus to collect and store a sample of an environmental gas, e.g. air. A sample container or bottle is cooled below the condensation temperature of the environmental gas so that a partial vacuum is created in the container thus permitting environmental gas to be drawn into the bottle and condensed. Included in the apparatus are means to meter the quantity of environmental gas admitted to the bottle.

Abstract: A fail-safe pneumatically operated by-pass sampling valve suitable for use n hazardous chemical processes utilizes a manually operated spool valve to initiate a pneumatically operated piston driven crank to rotate a sampling valve. The sampling valve withdraws a sample amount of fluid from a process line without disturbing normal process flow. A pneumatically connected spindle valve and a plurality of limiting valves are proximately positioned and operatively connected to the piston to automatically move the piston actuating member from a normally closed non-sampling position to a sampling position and then back to a normally closed non-sampling position.

Abstract: A pipetter for drawing fluid into capillary tubes and the like. A capillary tube is forced into an adapter coupled to one end of a vented, flexible tube. A compression wheel rides in a guideway adjacent the tube, and is rolled to continuously vary the point at which the tube is compressed in the manner of a peristaltic pump. Manual rolling of the wheel away from the capillary tube produces sufficient suction in the tube to cause liquid to be drawn into it. The pumping action is reversible in that rolling the wheel back toward the capillary tube will cause fluid to be expelled. Provision is made to prevent undesirable "compression set" as a result of long term static of the flexible tube during periods of non-use.

Abstract: The invention relates to a method of and an apparatus for producing a foam-forming reaction mixture of at least two liquid components which react together and which are fed continuously to a mixing zone where they are mixed together. The volumetric flow of at least one component is measured continuously both in the main pipe leading to the mixhead and also in a subsidiary pipe which branches off the main feed line between the storage for the components and its pump. This subsidiary stream serves as a source for intermittent weighing of the component so that the density of the reaction component can be periodically calculated and monitored. This helps ensure the proper mass of component entering the mixhead.An apparatus is disclosed which achieves precise dosing of the components so that a product free of defects and having the desired properties may be produced.

Abstract: A U-shaped tuning fork is fixed to a supporting block connected to a body in which a fault is to be detected. A spring loaded rod is movably supported at one end on the supporting block and extends through a spherical wedge sandwiched between two legs of the tuning fork. The tuning fork resonates at a frequency at which the detected body vibrates when a fault occurs in it. This permits the wedge and therefore the rod to move indicating the occurrence of the fault. Simultaneously a microswitch is operated to indicate electrically the existence of the fault.

Abstract: The disclosed device comprises two support end assemblies formed as cup-shaped sleeves adapted to be alternatingly engaged with the internal surface of a pipeline and interconnected by a motion member. The lateral surface of each sleeve defines and annular chamber with an elastic sheath thereby. The two sleeves are interconnected by a bellows fixed between the bottoms of the sleeves. The annular chambers and the bellows are connected to an air-compressor through an automatic control system arranged so that at the initial stage of a successive advancing step the leading chamber communicates with the ambient atmosphere, while the trailing chamber and the bellows are communicated to the pressure connection of the compressor, whereas at the final stage of the step the trailing chamber and the bellows are communicated with the suction connection of the compressor, while the leading chamber is under pressure.

Abstract: An ultrasonic flaw detector for detecting irregularities in an object, such as a pipe, having a segment of annular cross-section. The detector includes a transducer with an involute transmitting surface for sending ultrasonic signals into the object at equal non-radial angles of incidence. The detector further includes transmission apparatus for maintaining a constant physical relationship between the transducer and the pipe and interpretive apparatus for correlating reflections of ultrasonic signals within the object with irregularities.

Abstract: A pressure detector comprising a spring-loaded diaphragm mounted in a housing to define a pressure chamber to which test fluid is introduced. A pulse generating element is provided to generate an electrical pulse in response to a displacement of the diaphragm when the fluid pressure in the pressure chamber exceeds a predetermined level. An averaging circuit is connected to the pulse generating element to convert the pulses into a signal having a voltage level representative of the mean value of the pressure variation.

Abstract: A ski stiffness indicator comprising a type of a C clamp which receives a pair of skis placed bottom to bottom, and which can be used to force the middle portions of the skis together. The force required for urging the portions of the skis together is registered on a gage, and the flexing of the skis under a selected load indicates the stiffness of the skis, and thus indicates the relative flex to select skis for varying conditions. Also, the load required to make the skis touch along their length indicates the ski stiffness.

Abstract: An operative member for a quick shut-off apparatus for steam turbines formed of a non-arcing solid material having a predetermined characteristic value determined by the breaking elongation, breaking stress, modulus of elasticity and specific weight, such as an extruded polyamide.

Abstract: Disclosed herein is a throttle control for an engine including a housing supporting a control lever for rotation relative to a neutral position, a throttle lever movably mounted on the housing and adapted to actuate the engine throttle, a throttle drive member including a drive pin and mounted for rotation in response to movement of the control lever from the neutral position, and a cam member connected between the throttle lever and the throttle drive member. The cam member includes a cam track receiving the drive pin and having a shape effective to displace the cam member relative to the throttle drive member, transversely relative to the rotational axis of the throttle drive member, so as to move the throttle lever in response to rotation of the throttle drive member.