Abstract: A high pressure fuel injection pipe is produced by squeezing an end portion of a small-diametered steel pipe member having a flow path extending through the center thereof to form a flow path of reduced diameter in the end portion communicating with the central flow path, pressing and plastically shaping the end portion into a frusto-conical or arcuate-surfaced connecting head, and grinding minute curve concavo-convex faces created in the inner surface of the flow path of reduced diameter during the plastic shaping to thereby form a flow path equal in diameter and communicating with the flow path in the small-diametered steel pipe member.

Abstract: A pipe section is mounted in a horizontal position and upper and lower halves of a spigot ring mold are clamped to the spigot end. The lower mold half is provided with a port for receiving a nozzle of a hardenable liquid resin supply hose and the upper mold half is provided with vents. Resin is forced into the mold under pressure until some comes out of the vents. After the resin is hardened, the mold is removed.

Abstract: The Jacquard machine employs a selector system for blocking and un-blocking the pressers (e.g. Jacquard needles) wherein use is made of pivotally mounted locking levers between a control element and each presser. The control elements which may be in the form of multimorphous bending strips or a switching means comprised of two electrically magnetizable relatively movable rod-like members, engage with the levers to cause pivoting of the levers into a blocking or non-blocking position relative to the pressers.

Abstract: There is disclosed an apparatus for producing a selvage structure of a knit-woven fabric. The knit-woven fabric is produced in a warp-knit structure from weft thread loops and comprises spaced apart stitch wales with warp thread groups disposed therebetween, the warp threads being interlaced with stitch connecting loops to form a weave. The selvage of such fabric consists of a weft thread and a marginal weft thread, and comprises a marginal wale built by mutually binding stitches from a weft thread, stitches from a marginal weft thread, and stitches from a lock thread.

Abstract: There is disclosed a device for cutting weft in looms with mechanisms for multi-weft weaving. The cutting device includes a holder on which mutually adjustable shields are mounted. The shields are provided with entrapping dents for the introduction and location of weft between the blades of cutting jaws at a cutting point. The cutting device has a movable jaw which is adjustably connected to a control lever. Adjustable shields and cutting jaws permit the use of the entire length of knife blades secured to the jaws. In this manner, during cutting the overlap is minimized and the lifetimes of the cutting edges and the cutting jaws are increased.

Abstract: There are provided improvements relating to liquid jet looms in which one improvement relates to the conversion of conventional shuttle looms to liquid jet looms; in another improvement, there is provided a storage device for retaining a length of weft filament in which the storage device is in the form of an open-top chamber with a pair of open ends between closed side walls with the closed side walls having an open top providing access to a cavity formed by the side walls. In a still further improvement, there is provided a method and apparatus for advancing a weft filament across a shed of a loom in which the filament is advanced by engaging a stream of liquid but in which the flow of liquid is interrupted prior to the filament traversing the width of the shed.

Abstract: The relative movements of the sheath and core wire of a bowden cable are used to generate a multiplicity of modes of color selection of a weft-thread selector for a shuttleless loom. The single cable is the sole connection between the drawbar assembly and the dobby.

Abstract: A billfold file for currency bills in a billfold, attached or unattached thereto, for quick, accurate filing. Parallel, rectangular, foldable sheets with bill-receiving areas therebetween, each sheet having an index tab labeled with the bill denomination, the sheets being scored for easier folding, or unscored. The sheets being interconnected at a place facilitating folding and bill insertion.

Abstract: A locking device adapted for use with a bolt-and-nut type fastener, wherein the locking device comprises two annular washers (or one annular washer) and the under surface of a bolt head, the annular washers being formed with a cam face and a toothed face.

Abstract: The adjacent sides of adjacent screen frames have juxtaposed grooves therein. A rubber band seated in the adjacent grooves and encircling the adjacent sides serves as a hinge connecting the frames. The frames have inverted tee-shaped feet which are frictionally engaged in tapered sockets at the bottom of the frames, yet may be withdrawn and rotated ninety degrees.

Abstract: In continuously casting molten steel at least a pair of rolls is disposed near the leading end of the crater at which solidification of the molten steel in the cast piece completes so as to roll the cast piece at a reduction rate of from 0.1 to 2.0%. The variation in the thickness of the cast piece is detected and compared with a definite reference value for controlling the drawing speed and or the quantity of the secondary cooling water.

Abstract: A method of widening the width of a continuously cast strand, especially a cast steel strand, comprising the steps of casting a strand in an adjustable continuous casting mold having a first pair of oppositely situated short sides and a second pair of oppositely situated long sides defining therebetween the mold compartment, wherein at least one of the short sides of the mold can be moved during the casting operation.

Abstract: A resin for coating sand and a resin-coated sand produced therefrom wherein the resin is prepared by incorporating furan into a phenolic novolak resin. In the preferred practice, the resin is produced by reaction of furfuryl alcohol with a phenolic compound at an acid pH to give a furfuryl-phenolic intermediate in a first step, and then, in a second step, reacting the furfuryl-phenolic intermediate with a lower aliphatic aldehyde to produce the resin. The resin-coated sands of the present invention provide unexpectedly improved shakeout and collapsibility characteristics in the shell process.

Abstract: In a method of and apparatus for producing ingots of unalloyed and alloyed steels having an improved primary crystallization, reduced ingot segregation and a reduced content of non-metallic inclusions, molten steel is poured into a mould, a slag mixture is supplied onto said steel, and energy is supplied to the slag mixture via at least one consumable electrode while the steel is solidifying. The slag mixture has a certain height corresponding at most to the relationship 0.15 (A + 100), wherein A is the shortest distance between the inner mould wall and the at least one consumable electrode, given in cm and amounting to at least 5 cm. Also, at least one consumable electrode has dimensions such that the ratio of the electrode cross-sectional area(s) to the mould cross-sectional area amounts to 1:10 at most.

Abstract: Automatic molten metal pouring apparatus comprising molten metal level detector, mold position detector, ladle tilting angle detector, a ladle tilting servomechanism and a control device. The apparatus permits a suitable pouring flow rate of molten metal to be automatically poured into each of the molds of different types which may be conveyed one after another to the pouring position along the casting line.

Abstract: The disclosure embraces a centrifugal casting apparatus of a character for casting comparatively small articles or objects of highly refractory metals, such as jewelry and similar articles, the centrifugal casting apparatus being enclosed in a housing, the arrangement having a motor-driven throwing arm and a secondary arm mounting components of the casting apparatus, the secondary arm being adapted upon energization of the motor to be centrifugally oscillated or rotated about a pivot axis to a diametrically aligned position with the throwing arm to rapidly accelerate flow of the molten casting metal into the mold, the apparatus including a closure or cover for the housing in association with means for automatically interrupting operation of the motor when the cover or closure is moved to an open position.

Abstract: The sealing mechanism for a rotative heat regenerator herein disclosed includes a pair of seal rings fixed to an axle received in the central hole of a disc-shaped rotative heat regenerator core. Each seal ring has a boss provided in the center and inserted over the axle, at least two arms extending outwardly from the boss and rings being attached to the outer ends of the arms and identical in diameter to the heat regenerator. The boss, the arms and the rings are positioned opposite to the center, the side face and the outer periphery, respectively, of the heat regenerator. Each of the boss, the arms and the rings has a sliding member facing either side of the heat regenerator, and the sliding members provided in the rings are slidable along the outer surface of the regenerator. Elastic bodies are interposed between the sliding members and the regenerator surface.

Abstract: The wave length of an infrared, semiconductor laser diode having an output frequency that is dependent on the diode temperature is maintained substantially constant by maintaining the diode temperature constant. The diode is carried by a cold tip of a closed cycle helium refrigerator. The refrigerator has a tendency to cause the temperature of the cold tip to oscillate. A heater diode and a sensor diode are placed on a thermal heat sink that is the only highly conductive thermal path between the laser diode and the cold tip. The heat sink has a small volume and low thermal capacitance so that the sensing diode is at substantially the same temperature as the heater diode and substantially no thermal lag exists between them. The sensor diode is connected in a negative feedback circuit with the heater diode so that the tendency of the laser diode to thermally oscillate is virtually eliminated.

Abstract: This invention combines a hot water heater which conventionally supplies hot water for household use, a hot air furnace and an air conditioning evaporator coil conventionally provided in the plenum of the furnace as a component of a central air conditioning system, by means of pipes from the hot water heater to the air conditioning evaporator coil. Hot water heated by the hot water heater circulates through the evaporator coil which becomes the heat source for the air moving through the furnace and ductwork throughout the house. Valve means are provided in the water pipe lines to isolate the hot water heater from the air conditioning evaporator coil when the coil is used as a component of the air conditioning system during the summer months. Valve means are provided in the air conditioning lines to isolate the coil from the air conditioning compressor and condensor unit during the winter months.

Abstract: A bellows arrangement for forming a gas leakage resistant pressure seal between ceramic heat exchange tubes has an elongated metallic bellows defining a central passageway with first and second ends. A metallic tube passes through the bellows and freely moves with respect to the second end of the bellows while defining a gas chamber between the tube and bellows. Axial expansion of the bellows under the influence of the internal pressure when such pressure is higher than the external pressure which may be the atmosphere acts to apply a force at the interface between the bellows assembly and the ceramic heat exchange tube which is proportional to the internal pressure of the heat exchange tube, thereby accommodating movement of the heat exchange tube and providing a pressure seal that is leak resistant.

Abstract: The system for condensing gases such as steam includes a housing with a gas inlet. At least one vertical column of vertically spaced separate tube bundles are in the housing. A separate water conduit is connected to the inlet of each of the separate tube bundles.

Abstract: Impervious graphite tubes, rings and other chemical processing structures made from impervious graphite can be improved with respect to impact strength, safety, shock resistance, pressure capability and heat transfer capability by partially thermally degrading impervious graphite structures and coating the outer surfaces of the treated graphite structures with a layer of metal at an elevated temperature. Upon cooling, the structure is under compression and has the improved properties. Structures are claimed comprising metal armored, partially thermally degraded impervious graphite.

Abstract: A tool for testing conditions at a specific depth in a well is run into the well on a wire line. The tool includes a stem having sealing rings around its outer surface adapted to seal against the inner wall of a locking assembly mounted on the lower end of a locking mandrel landed in a landing nipple in tubing in the well. The stem is locked in the locking assembly by dogs that move radially from a locking position preventing movement of the stem to a nonlocking position permitting pulling of the stem from the locking mandrel. The locking assembly includes an adapter that allows a single size stem to be used with a locking mandrel of any size.

Abstract: Apparatus and a method for cutting round perforations and elongated slots in well flow conductors used in solution mining. The apparatus comprises a jet nozzle head for discharging a fluid to cut the perforations and slots, a string of continuous tubing for handling the jet nozzle head in a well bore, a tubing injector or tubing guide, a tubing storage reel having a flow conducting central hub connected with the tubing on the reel for forcing the abrasive fluid into the tubing at the reel, fluid pump and storage means connected with the reel hub, means for mounting the tubing injector above a well, and a wellhead having annular stripper rubber for sealing around the tubing and a side outlet for fluid returns.

Abstract: Disclosed is an axially movable valve for admitting fluid to a fluid starved region. The admitted fluid feeds a pressure generating pump. Fluid pressure generated by the pump provides a force to further open the valve and to move a tool actuator. The valve opens with minimal sliding friction resistance. During the opening sequence, the flow area of the valve gradually increases. This abstract is neither intended to define the scope of the invention, which, of course, is measured by the claims, nor is it intended to limit the invention in any way.

Abstract: An oilwell tubing tester for the in-place pressure-testing of oilwell tubing strings for leaks, utilizes a flapper valve, a valve seat, a three-piece sealing mechanism, and a sliding J-mandrel located inside the tester housing in abutting relationship with the flapper valve.

Abstract: A sub-sea well head comprising a connector and a christmas tree which is enclosed in a capsule is characterized in that a master valve is contained within a member forming the foot of the christmas tree, the member penetrating and being sealed into the bottom of the capsule and supporting the capsule, and in that the master valve is contained within a part of the member within the capsule.

Abstract: In a preferred embodiment of the invention, a fire truck is provided with an adapter for connecting the fire hose to the truck water-pump outlet, and extending from the adapter is an air conduit connected to a compressed-air source for alternate use of the same hose to pump air therethrough as from bottled breathable compressed air whereby trapped firemen may be furnished breathable air through the fire hose normally in their presence, by a mere switching-off the water-valve and opening the air-valve.

Abstract: An improved sprinkler head provided with a water pressure indicator to permit a visual check to see whether or not it is supplied with water under pressure. The indicator includes a colored indicating element protruding under water pressure.

Abstract: Apparatus for movably mounting and guiding rotary cutting equipment comprise an elongate track support having a circular cross-section, at least two distinct, mutually spaced elongate tracks extending along the track support and projecting from the track support beyond the periphery of the circular cross-section, a carriage for mounting rotary cutting equipment movable on the tracks along the elongate track support and equipment on the carriage and on the track support beyond the periphery of the circular cross-section for propelling, and for selectively arresting, the carriage relative to the tracks.

Abstract: This drilling device includes a hydraulic motor, coaxially surrounding the drill rod, for rotating the drill. The rotor of the motor directly rotates the drill, without the use of gears. Advantageously, the rotor includes a replaceable adapter sleeve that has a shape conforming to the peripheral shape of the drill. By replacing the sleeve, drill rods of different shape or size can be accommodated. The rotor may be of the wing cell type, wherein a plurality of radially moveable vanes or wings project radially from a circular rotor into contact with the inner wall of a non-circular cylinder wall. The vanes define cells within which the hydraulic fluid presses against the vanes so as to impart rotation to the rotor, sleeve and drill.

Abstract: A bottom-positioned well drilling platform is provided with an enclosure in the lower part thereof which forms a chamber into which returning drilling mud and cuttings can be discharged. A pump and separate return line raise the mud alone from the chamber to the top of the platform while the cuttings remain in the chamber.

Abstract: Apparatus and method for recovering resources from subterranean rock formations, particularly heat energy, and more particularly geothermal energy. A heat-drill, which has means associated therewith for removing some rock from the earth and forming other rock into shafts, drills into the earth and forms two shafts at the same time. Both shafts communicate with each other and with the surface and are used to circulate a drilling mud which passes through the drill body and carries off the rock being removed. The heating means is shaped in a coil or grid pattern and operates at a temperature well above the melting point of the rock, heating the rock it displaces to well above its melting point, while raising the average temperature of the total rock melted to slightly above its melting point. The drilling mud absorbs heat as it circulates and the absorbed heat is put to any desirable use, particularly by being recovered from the drilling mud by a heat-exchanger on the surface.

Abstract: An air lift system for large diameter borehole drilling is disclosed. The system is applicable in drilling operations where a vertical pilot hole is drilled below the point to which the borehole will later be enlarged and a slant hole is drilled obliquely to intersect the pilot hole near its nether position. During the drilling operation, the circulation system pumps drilling fluid down the annulus of the borehole to cool the cutterhead and to mix with the cuttings. The drilling fluid carrying the cuttings then moves down the pilot hole and up through the slant hole. A plenum is located in the slant hole to assist in the lifting of the drilling fluid. The plenum includes a tapered transition pipe, a tapered discharge horn, and an air diffusion ring located at the throat of the discharge horn. The diffusion ring is utilized to inject outside air into the drilling fluid passing therethrough.

Abstract: A system for bidirectional in-motion weighing of freight cars of a train includes a weighbridge, first and second sets of load cells, three wheel sensing devices, a control device, a device initiated by the control device for weighing operations, and a printer for the total car weight. The sets of load cells are mounted to receive the load from opposite ends of the weighbridge. Each set has a rapid change of output voltage when an axle enters or leaves the associated weighbridge end. The weighbridge is located between two spaced, aligned tracks and has a third track. The three tracks provide a path of train travel. Each wheel sensing device has a component to provide a signal when a wheel passes. Two components are mounted beside the first two tracks a predetermined distance from opposite ends of the third track. The third component is located beside one of the three tracks a predetermined distance from one end of the third track.

Abstract: An apparatus for cumulatively measuring the weight of a continuous bulk material conveyed by a belt conveyer, comprising; a pulse generator operatively coupled to the conveyer for generating pulses of the frequency associated with the conveyer speed; a decimal counter for counting the speed associated pulses; a full scale detector coupled to the decimal counter; a load cell operatively coupled to the conveyer for providing an analog signal representative of the weight of the material within a predetermined span of the conveyor; an analog-to-digital converter responsive to the full scale output for converting the analog signal into a bit parallel coded digital signal; logical processing means for modifying the number of pulses obtainable from the decimal counter within one full scale of the counter as a function of the bit parallel coded digital signal and a cumulative counter for counting the pulses thus modified of the pulse number.

Abstract: A pneumatic conveyor tube weigh jet assembly comprising a pivotally suspended holding chamber, a load cell for determining the weight of material in the holding chamber and flexible connections which allow for the weigh jet assembly to be permanently connected into a pneumatic conveying system.

Abstract: A low profile platform scale having a rigid rectangular platform and a base assembly, supporting the platform, adapted to rest on an underlying foundation and having four independent corner pads, each with beam load cells mounted in cantilever fashion on the corner pads, with the load cell elements coupled to the platform in an arrangement where the load on the platform is transmitted to the load cell elements by means of a tension member. The tension member is connected by ball and socket means to both the platform and the load cell element. The corner pads are connected to each other by slightly flexible, inelastic rods arranged beneath and adjacent borders of the platform in a rectangular array, and fastened to adjacent corner pads for fixing the spacing between them. The underlying corner pads operate independently and accommodate locally irregular surfaces causing any one of the corner pads to be slightly tilted without affecting the accuracy of response of the load cell.

Abstract: Undesired temperature variations in scales having a force-compensating coil carrying a load dependent current are reduced by an additional heat generator mounted near the coil. The heat generated by the latter is controlled to compensate for changes in heating power dissipated by the force-compensating coil.

Abstract: A turbine in the form of an endless "Venetian blind" set of arcuate turbine blades mounted to extend between a pair of endless chains that are entrained over sets of sprockets so that two flights of the blades travel in opposite directions in closely spaced parallel planes. Shafts connect sprockets of the sets to maintain the blades parallel and to deliver to an alternator the torque applied to the sprockets by the reaction of the blades to a fluid passing therethrough.

Abstract: An aspirator using pressure from a suitable source boosts the vacuum available when intake vacuum drops. The pressure source may be the A.I.R. pump, for example. At low throttle settings engine vacuum is high and pump pressure is low. At 25% throttle engine vacuum is lower and the A.I.R. pump pressure is higher. With some flow the output vacuum from the aspirator is greater than the engine vacuum. This is also true at greater throttle openings. The device has a regulation effect causing output variation to be less than the variation in manifold vacuum. This makes the lock-up transient and lockup error less dependent on engine speed and makes cruise performance more uniform over the entire range of cruise speeds.

Abstract: A loudspeaker system which has a frequency response at any angle located about the speaker system which will be uniform such that the output sound pressure at any frequency from the speaker system will be as great or greater than the sound pressure from any other direction which comprises a reflected path from the speaker system. The speaker system includes a radial horn which radiates a spherical sector rotated 360.degree. through a horizontal plane is provided. One or two speakers are mounted so that they produce a pulsating cylindrical wave which feeds into the radiator and an inverted conical member is mounted in the transition portion between the pulsating cylinder and the output horn portion. This output is blended with similar wavefronts produced by a low fequency loudspeaker which is acoustically associated with a vented box. The vent is on the periphery of the box adjacent the low frequency loudspeaker and is narrower than the thickness of the walls of the box.

Abstract: A combination muffler and air filter, having a central tubular member with spaced longitudinally disposed elongated slots. A disposable canister on the central tubular member is removably held in position by retainer caps engaged on the ends of the central tubular member. One of the retainer caps is adapted for connection to the exhaust conductor from a pneumatically operated device or compressed air system. The other retainer cap has therein an annular sump, connected by lateral ducts to a drain opening. The disposable canister has a perforated cylinder encasing a series of stacked annular members having both muffling and filtering properties. A perforated sleeve in the disposable canister supportively engages the inner periphery of the stacked annular members. A closure disc, fixed on each of the perforated cylinders, holds the stacked annular members in a compact and compressed condition.

Abstract: A portable scaffolding comprising a plank with frame members supporting each end thereof. The frame members include legs of steel angles which are interconnected at their lower portions by toggle arms for collapsing, and at their upper ends by threaded members for adjusting the spacing thereof. Inwardly facing channel members on the upper ends of the legs are received over the opposite edges of the plank.Another pair of channel members adapted to be received over the edges of the plank are also drawn together by threaded members, and depending from one of them is a step to facilitate stepping up onto the scaffold.

Abstract: A portable observation stand for mounting on trees having a wide range of diameters. The stand includes a frame, which is detachably secured to a selected tree, and an articulated ladder which may be retained in a climbing position, for entry by an outdoorsman, and in a base position to provide support for a floor during use. A U-shaped rail may be mounted on the frame, and a shroud which encloses the stand may be secured to the rail.

Abstract: An adjustable pad hydraulic lift structure has a vehicle engaging and supporting pad vertically movable by a hydraulic piston, the pad being mounted on a bolster and having load transfer blocks facing downwardly for engagement with the bolster to transfer vehicle load from the pad to the bolster. Supporting and guide rods on the bolster and bearings on the pad cooperate to support the unloaded pad for adjustment into selected position over the bolster, and while supporting the unloaded pad maintaining the pad at an elevation wherein the load transfer blocks are supported free of the bolster to permit free adjustments of the pad. The supporting and guide rods are yieldable when the pad is under vehicle load to permit the load transfer blocks to engage the bolster for load transfer from the pad to the bolster.

Abstract: An elevator system including an elevator car mounted in the hoistway of a building having a plurality of floors, hoistway doors at the floors, and a floor selector for controlling the movement of the elevator car. Each hoistway door includes address indicia related to the address of its associated floor in the building. A detector on the elevator car reads the indicia during movement of the hoistway door. The address read from the hoistway door is loaded into a car position memory associated with the floor selector.

Abstract: A sliding caliper disc brake comprising a torque member which is adapted to be fixedly mounted adjacent a brake disc and which has portions lying on both sides of the brake disc which are connected by bridging portions positioned radially outwardly of the periphery of the disc. Directly and indirectly operated friction pad assemblies are located on opposite sides of the disc and each include a friction pad carried by a respective pad backing plate. A caliper member is mounted on the torque member. The caliper member is guided for sliding movement relative to the torque member in a direction perpendicular to the disc, the caliper member and both the friction pad assemblies being supported by the torque member so that drag forces experienced by the pads during use of the brake are transmitted directly to the torque member.

Abstract: A service brake actuating assembly is effective to bring friction material into contact with the opposite sides of a rotating disc by urging such elements in an axial direction toward a reaction wall. A compact parking and emergency brake actuating assembly extends through the wall and is alternately effective to also clampingly engage the disc by urging such elements in the opposite axial direction.

Abstract: A case is provided with clips at the top and bottom so that it is releasably secured to upper and lower portions of a frame, thereby permitting the case to be readily removed. A suit coat can be readily draped over the top of the frame, which is configured much like a garment hanger. A horizontal rack near the bottom of the frame supports shoes beneath the case. Interlocking pivotal pants bars enable trousers to be carried. A flexible cover provided with shoulder and hand straps encloses the frame, case, suit coat, trousers and shoes.