Abstract: A method for extruding a track link bushing having a contoured opening and a generally cylindrical outer surface.

Abstract: A rear gauge assembly includes a gauge bar extending between two carriages, each carriage being mounted to a housing mounted to the rear of a press brake bed and having a lead screw and motor associated with it. Front gauges are provided on carriages on a pair of similar housings mounted to a rail mounted to the front of a press brake bed, each of these housings also having a lead screw and motor for driving its respective carriage. A microcomputer is employed to control the two motors for synchronizing movement of the rear gauge carriages with each other while driving the rear gauge, and to control the two motors for the front gauge while the front gauges are being driven to synchronize movement of front gauges with each other. The same synchronizing techniques for two lead screws are employed on a new type of ram drive for press brakes incorporating two ram drive screws, with a motor for each screw, the motors being synchronized by the controller.

Abstract: A vibration densitometer having a temperature compensated probe.

Abstract: A foam monitor senses the dissipation of foam within a transparent tube and employs a series of vertically spaced light emitting diodes which are cyclically pulsed to provide repetitive sequential scanning of the tube contents and a series of photo-responsive elements are axially spaced along the diametrically opposite side of the tube and positioned to monitor corresponding intermittent light paths that may be received from the corresponding light emitting diodes. The intermittent light paths are monitored during each scanning cycle to provide a pulse train which is indicative of the relationship between scanned levels containing foam and scanned levels void of foam. The pulses produced over a predetermined number of repetitive scans are totalized to provide an analytical measurement of the foam dissipation qualities for the liquid involved.

Abstract: An improved holographic recording instrument for recording on a holographic recording medium two successive holograms of the structure under differing stress conditions to produce a holographic interferogram containing information defining a deformation fringe pattern representing the deformations in the structure resulting from the change in stress conditions. A holographic recording unit for the instrument and for general holographic recording use.

Abstract: A torque reaction test system for evaluating the performance characteristics of a test motor by detecting its inertial reaction torque to acceleration and deceleration of the rotor. In one embodiment a test motor, typically at a final assembly stage and contained within a housing where it is inaccessible, is mounted in a rotatable fixture and the torque reaction of the test motor when accelerated and decelerated is obtained. The torque reaction is plotted against time or speed. A torque balance loop provides a feedback current which maintains the test motor housing within the fixture at a predetermined point of rotation and which provides an indication of torque reaction. A further embodiment provides a dynamometer in which a test motor is driven by a drive motor for a rapid run-up time and the torque response characteristics are plotted as a function of time or speed to provide nondestructive determination of system parameters.

Abstract: An improved power tong apparatus having power means for supplying rotative forces to a first tubular member in order to make or break a connection between such tubular member and a second tubular member and for measuring and displaying the torque supplied by the power tong apparatus to such tubular members. The power tong apparatus includes an internal transfer shaft means associated with the transfer shaft for transducing the angular deformation of the transfer shaft into an electrical signal representative thereof. A slip ring assembly is secured to a selected end of the transfer shaft for conducting electrical signals supplied to it. A display means is electrically connected to the slip ring assembly for receiving electrical signals produced by the transducer means.

Abstract: A device for measuring externally applied loads on a structural member, such as a support leg of an off-shore installation, comprises one or more flexible fluid-filled cells constrained between the surface of the structural member and a casing capable of transmitting externally applied loads to the structural member through the fluid within the cell(s), the loads applied to the member being derived by monitoring the fluid pressure within the cell(s). Preferably the cell(s) and casing are comprised in a sleeve-like assembly removably mounted upon the structural member and retained in position by friction.

Abstract: A tire inflation gauge consisting of a series of closely adjacent bars pivoted at one end on a horizontal axis and separate, independent springs supporting their opposite ends, onto which an automobile wheel may be driven in a direction parallel to the bars, the bars being depressed equally or unequally depending on the uniformity of weight supported respectively thereby, and a visual gauge for indicating the relative depression of the bars.

Abstract: A method for simulating cavitation on models by hydraulic testing with seate micro-bubbles which produce effects similar to those of a prototype operating at the same cavitation number wherein the micro-bubble content of the test liquid around at least a predetermined part of the model is adjustable in number per unit volume and the bubbles are homogeneously distributed thereabout and have dimensions of less than 200 microns.

Abstract: Method and apparatus for quantitatively and qualitatively determining the dust content of fibrous material, in which a representative sample of the fibrous material is opened to obtain individual fibers and release the dust contained therein. The individual fibers and fine dust are separated by a combination of gravity separation and air flow. Coarse dust is separated and collected incidental to the opening process. The dust quantity and quality are determined on a weight basis.

Abstract: In an apparatus for continuous draw-off of yarn from a package at a measured rate and under regulated tension, the yarn can either be passed to a waste receptacle for a predetermined length of time or can be metered to a scale for subsequent determination of yarn weight per unit length (denier). Diversion of the running yarn from one path to the other is achieved without affecting yarn draw-off rates and tensions.

Abstract: A system for measuring the water level, within a predetermined range, at the bottom of a tank containing gasoline. A first air bell is adapted to be inserted into said tank and has an opening in the lower part thereof to define a first interface. A second air bell is disposed interiorly of the first air bell and has an opening in the lower part thereof to define a second interface which is lower than the first interface. The upper ends of the air bells are in communication, respectively, with opposite legs of a manometer so as to produce a displacement of manometer liquid as a function of the difference of hydrostatic pressure between said interfaces whereby said displacement is a function of the water level therebetween, there being minimum displacement when the water level is at said second interface and maximum displacement when the water level is at said first interface.

Abstract: An apparatus for indicating the level of fuel in a fuel oil storage tank including a vertically positioned tube having a multiplicity of longitudinally spaced and movable floats therein and a multiplicity of associated reed switches and resistors positioned on the outside of the tube and spaced from each other. The switches are actuated by magnets on the associated floats, which rise and fall with the fuel level, and shunt varying amounts of current by the resistors so that a fuel level readout can be obtained on a meter.

Abstract: A thermocouple circuit has dissimilar conductors joined to form a conventional temperature transducer located in a zone to be monitored or controlled. The opposite ends of these conductors are connected to similar metal leads in a capsule located in a stable oven to form a reference junction. The oven also houses an inexpensive integrated circuit operational amplifier which is electrically connected to the similar metal leads to yield a high gain output signal proportional to the weak thermal e.m.f. in the dissimilar conductors. This signal is compared to a preset reference voltage level and the difference signal converted to a temperature correction signal which is in binary form. The oven, the operational amplifier, and the binary signal producing circuitry are all driven by a power source which has as its reference or common potential an isolated voltage level tapped off the shielded secondary winding of an otherwise conventional transformer.

Abstract: A pressure sensing device and method of construction therefor. The device includes at least two dielectric discs which are fused together at their peripheral boundary to form a hollow monolithic capsule having two nominally planar opposed inner surfaces. The opposed inner surfaces of the capsule are mutually separated by a uniform gap near the peripheral boundary and by a distance related to the difference in pressure interior and exterior to the capsule otherwise. Conductive films are disposed on opposed portions of the inner surfaces of the capsule. The device further includes a means for electrically coupling each of the conductive films to an associated terminal exterior to the capsule. The capacitance between these terminals is related to the above-mentioned pressure differential.

Abstract: A pressure transducer includes an electromagnetic drive coil which vibrates a thin walled cylinder at a natural vibrational mode. A capacitor unit senses the vibrational frequency of the cylinder and gives an output signal corresponding to the pressure differential between a fluid contained within the cylinder and a vacuum reference that is maintained adjacent to the exterior surface of the cylinder. Electric heaters maintain a constant operating temperature of the transducer.

Abstract: A method and apparatus for the rapid transfer of substantially all of a sample adsorbed in a gas sampler tube into a gas or other chromatograph analysis system, in which the chromatograph carrier gas or other fluid is circulated through the chromatograph and a bypass valve in an injection device mounted externally thereof so as to establish equilibrium conditions therein and simultaneously permitting loading of the sampler tube into the injection device without disturbing the fluid flow. The sample is heated and then the fluid flow is diverted through the sampler tube to desorb the sample and carry it directly to the chromatograph column.

Abstract: The invention involves a device for obtaining a sample of molten material, and a particular form of a means for deoxidizing or conditioning this material. The deoxidizer is in the form of a generally tubular element which can be deformed for insertion into the inlet tube of a molten metal samoler so that it is held by the resilient force of the element.

Abstract: The end-point of an operation in which the flow properties of particulate material are altered during agitation is determined using a probe inserted into the vessel in which agitation occurs and which deflects when hit by material being agitated and detecting when the amplitude and/or frequency of the deflections of the probe changes to a given level.

Abstract: This invention relates to accelerometers, that is to devices for detecting or measuring accelerations. An accelerometer in accordance with this invention includes at least one body a support or support system for supporting the body in a state of stable equilibrium except when the accelerometer is subjected to an acceleration exceeding a threshold value wherein movement of the body relative to the support causes a change in a physical parameter of the accelerometer which is other than a dimensional change due to distortion and other than, or in addition to, a flow of electric current via the body from one part of the support to another.

Abstract: Rotary ultrasonic testing apparatus comprises an annular stator; a replaceable annular ultrasonic probe assembly mounted for rotation on the stator; and first and second fixed replaceable annular guideways for the articles to be tested, said guideways having internal configurations arranged to conform to the cross-section of the article to be tested and provide a close tolerance guide therefor, and said guideways each having a side surface adjacent the probe assembly which serves at least partially as a radially inwardly extending side wall of the probe assembly.

Abstract: A device for producing linear vibratory motion includes, in the preferred embodiment, an electric motor of the contra-rotating type, i.e. one in which both the rotor and stator rotate about a common axis and in opposite directions. One or more pairs of eccentric weights are provided, one weight of each pair rotating with the rotor and the other with the stator. Gearing is provided to assure synchronized rotation of the rotor and stator and to determine the angle of the plane in which the weights are aligned and, hence, the plane along which the vibratory motion is directed.

Abstract: A drive mechanism for a vibratory machine, comprising an input shaft rotatably mountable on the non-vibrating frame of the machine and adapted to be driven, e.g. by a belt drive and pulleys from a standard electric motor, an output shaft mounted in line with the input shaft on the vibratable part of the machine by heavy duty bearings and a flexible resiliently deformable member in the form of an inflatable bellows located between the input and output shafts and preferably sandwiched between plates mounted on the ends of the two shafts and out-of-balance weights on the output shaft whereby, upon rotation of the input shaft, the output shaft will be rotated at the same speed and due to the presence of the weights will cause vibration of the vibratable part of the machine, the flexible resiliently deformable member ensuring that little or no motion other than rotation is transmitted from the output shaft to the input shaft and hence to the electric motor.

Abstract: A valve actuator is provided for use with a valve having an actuator shaft the rotation of which actuates the valve. The valve actuator comprises a housing having a worm gear rotatably mounted in the housing and wherein the worm gear includes a shaft portion extending externally of the housing so that a handle may be secured thereto. A segmented gear having an axis of rotation generally perpendicular to the worm gear axis, is also rotatably mounted within the housing and is positioned to mesh with the worm gear so that rotation of the worm gear produces a like rotation of the segmented gear. The segmented gear includes means for securing the actuator shaft thereto and an indicator is secured to the segmented gear and is visible exteriorly of the housing to indicate the rotational position of the segmented gear to thereby indicate the degree of opening of the valve. In addition, preferably adjustable stop members are provided in the housing to limit the rotational travel of the segmented gear.

Abstract: In a manually operable shift control mechanism operatively connected with a transmission through shifting means wherein a shift lever controls a preselector valve means for selectively establishing one of a multiplicity of consecutively arranged speed ratios in the transmission, an escapement assembly including an arcuate control member, affixed to the shift control housing, having a multiplicity of detent cut-outs corresponding with the angular location but exceeding the number of the transmission settings; an escapement latch pivotally secured to the shift lever and having allochiral tooth portions alternately capable of entering into one of the detent cut-outs to cause at least momentary interference between the control member and the escapement latch; and bias means for sequentially pivoting and again centering the escapement latch relative to the control member for each transmission setting, whereby all but the slowest movement of the shift lever will cause a momentary entry and subsequent momentary inte

Abstract: A brake lever mounted to a drop type handle for a bicycle, comprising a main lever substantially parallel to a bent rod section and an auxiliary lever parallel to a straight rod section of the drop type handle. The auxiliary lever is shiftable in pivoted position from the main lever so that the strokes of both levers may cause substantially equal strokes of a control wire and so that the grip dimension, the distance between the auxiliary lever and the straight rod section, may be adjusted.

Abstract: A differential comprises a housing having a spider mounted therein and four pinion gears rotatably mounted on stub shafts of the spider in a conventional manner. A semi-spherically shaped thrust washer is disposed between an outboard side of each of the pinion gears and the housing and has an elongated slot formed therethrough and disposed entirely within the confines of the thrust washer. A pin is secured to the housing and extends into the slot to anchor the thrust washer relative to the housing.

Abstract: A drive-transmitting arrangement for use in a motor vehicle, fork-lift truck or industrial machinery includes a differential or epicyclic gear assembly having an input member and two output members. One of the output members is connected, directly or indirectly, to the operating element of a hydraulic pump so as to drive the pump and the outlet line of the hydraulic pump contains a control valve which may be responsive to the parameters of an engine connected to the input member of the gear assembly. Adjustment of the setting of the valve means varies the resistance to movement of the pump operating element so as to vary the ratio of the gear assembly.

Abstract: A support is provided from which a drivable rotary grinding wheel is journaled for rotation about a first predetermined axis. A mount is also provided and is supported from the support from guided back and forth shifting relative thereto toward and away from the outer periphery of the grinding wheel along a predetermined path extending at least generally radially of the axis of rotation of the grinding wheel. The support means also supports the mount for limited oscillation of the mount about a second axis generally paralleling the first mentioned axis and the mount includes structure operative to support a length of saw chain therefrom.

Abstract: A power tong includes a frame and a pipe-gripping mechanism associated with a throat at one end of the frame. Power is transmitted to the pipe-gripping mechanism from a power unit through a drive train. The pipe-gripping mechanism cooperates with the throat to receive a pipe section to be rotated and includes a partial ring rotatably mounted within the frame and having an opening which may be aligned with the throat. The ring may be rotated in either direction by the power unit. Mounted on the tong is a die carrier which is rotatable relative to the ring. Link members are pivotally mounted on the die carrier and include dies positioned to grip the external surface of the pipe section. The link members are arranged to cooperate with specially designed cam surfaces on the ring so that, when the ring is rotated relative to the die carrier, the dies are moved into engagement with the pipe section.

Abstract: This invention relates to a new tool for loosening screw parts or like devices which are frozen in screw threaded connection in a metal work part, for example. The new tool includes hollow, cup-shaped socket including a thick solid upper end head portion and an integral hollow skirt portion for fitting over an exposed head of a frozen screw device, a short axial extent of the exposed head of the device being interlocked with the skirt when an inner rim portion on the skirt is in locked engagement with the work-part.

Abstract: An easily adjustable wrench having jaws that move relative to each other. The moving mechanism comprises a pinion gear which is pivotally mounted from one of the jaws and a gear rack on the other jaw with which the pinion gear engages. An actuating button pivots the pinion gear out of engagement with the rack for quick adjustment between the jaws while the pinion gear may be manually rotated for finer adjustments.

Abstract: A wrench for turning components such as bolts, nuts, screws or the like wherein a gripping head is pivotally connected to the wrench handle so that with the head gripping the component to be turned, the handle can be pivoted from a position in which it is generally radial with respect to the axis of turning of the component, to a position in which it is more axial relative to the said axis of turning of the component. The wrench preferably has a second gripping head at the other end, and each gripping head is similarly pivoted to the handle. Each head may be pivotable relative to the handle by 90.degree. to each side of a mean position in which the head is in the general plane of the handle.

Abstract: A tool for removing embedded screws and the like, having a pair of pivotally connected handles with screw removing heads at the ends thereof. The screw removing heads each have matching opposed clinching edges, including a pair of laterally spaced parallel clinching edges and a clinching edge at the bottom of each head which is perpendicular to the parallel edges and disposed between them. The parallel edges dig into the periphery of the screw head to allow torque to be applied to the screw as the handles are turned by a user, while the perpendicular clinching edges engage the underside of the head of an embedded screw to oppose slipping movement of the tool off the screw head and apply upward force thereto.

Abstract: A method of manufacturing a contact lens by machining a lens blank in a suitable machinable condition. The concave lens surface is machined first and the circumferential edge surface is then machined with the blank mounted in the same position. The partly formed blank is repositioned and the convex lens surface machined.

Abstract: Apparatus for and method of forming a surface on, for instance, a contact lens. The apparatus includes first and second movable members. The first member is pivotally connected to suitable support structure for rotation about a first axis. The second member, which supports a cutting tool, is pivotally connected to the first member for rotation about a second axis. This second axis is offset from the first axis so that it (the second axis) rotates or pivots about the first axis when the first member is rotated. The apparatus also includes a cam surface and a cam follower. In the first embodiment the cam follower is located on the second member and the cam surface is located on a cam or third member which is pivotally connected to the support structure for rotation about a third axis. This third member is also interconnected with the first member so that rotation of the third member rotates or pivots the first member about the first axis.

Abstract: An air powered hand tool having combined therein nut running and crimping mechanism in which a common cam member is motor rotated to effect run down of a work nut about a stud and is piston driven to effect crimping of the nut in locking relation to the stud; in which an indicator visually indicates to the operator completion of the crimping action; and in which a stop prevents frictional locking of the cam member in the crimping action; and in which the stud is enabled to rise a considerable distance above the nut as the latter is run down.

Abstract: The specification discloses a lathe incorporating automatic feed at fast and slow speeds for driving (a) a tool holder carriage rapidly in leftward and rightward directions along the lathe bed and slowly in a leftward direction for automatic feed, and also (b) for rapid movement of the lathe cross-slide forwardly and rearwardly across the bed and slow movement of said cross-slide in the forward direction. In order to minimize the time taken for transition from slow to rapid speed in the automatic feed mechanisms, two parallel drive trains (one fast and one slow) are arranged to be selectively clutched to a main drive means for driving the tool holder carriage along the bed and for driving the cross-slide across the bed relative to the carriage.

Abstract: In a tool change system for a vertical lathe or the like, a new and improved arrangement for clamping a tool block in a tool supporting ram. The new clamping means provides a firm support for the tool block and further includes means for equalizing the clamping forces applied to the tool block and for properly positioning and orienting the tool block in the ram. In accordance with a specific feature of the present invention, the tool block is provided with clamp engaging means on opposite sides thereof and the clamping means comprises a pair of spaced clamping bars engageable with the respective clamping means on the tool block. A common actuating means is operative to move the clamping bars into a tight clamping relation with the clamping means of the tool block.

Abstract: A rotatable drum 4 is supported by rollers 5 on a travelling frame member 1, and surrounds a pipe 3 gripped by the frame member. Swing levers 6, 6' coupled at their one ends to and driven by fluid pressure cylinders 10, 10' are pivotally mounted on the drum at journals 7, 7', and guide rollers 11, 11' and associated cutting and chamfering members 9, 9' rotatably driven by motors 8, 8' are mounted on the swing levers and extend inwardly towards the pipe. Pressure fluctuations in the cylinders are absorbed by accumulators 13, 13', whereby the chamfering and cutting members are sequentially driven into engagement with and smoothly follow the uneven contours of the pipe surface.

Abstract: An apparatus for preparing layered, nonbonded, structures of cross-lapped film is disclosed wherein at least two rolls of layered, nonbonded film are combined by introducing into a common location cut portions of film from said rolls from at least two film delivery means. The film is delivered to the common location in alternating order. The layers in the structure are maintained in position in a suitable receptacle means.

Abstract: A sugar cane planting machine for eliminating the excessive manual labor previously required to plant sugar cane stalks. The uncut stalks are loaded in the rear of a tractor-pulled cart at the bottom of which is positioned a conveyor-like belt for moving the cane towards the front of the cart. Slideably attached on a transversely positioned guide member of a pivotable frame at the front of the cart is a combination cross-cutting and kicker-chain assembly which moves laterally across the width of the cart under hydraulic controls. Said assemblies include a downwardly extending chain saw which is followed by at least one vertically disposed kicker-chain, both preferably under the control of a common motor. Below the kicker-chain assembly is positioned a trough or hopper having an opening formed along the bottom thereof.

Abstract: Apparatus for automatically severing flexible, thin-walled tubing of indefinite length into a plurality of segments comprising in combination means for advancing a continuous length of thin-walled tubing about a mandrel; a restraining member adaptable to restrain the advance of the thin-walled tubing at a predetermined position on said mandrel intermediate the ends of the tubing; tensioning means adapted for engaging the thin-walled tubing that has advanced beyond said restraining member after said restraining menber restrains the advance of the tubing and for tensioning said tubing about said mandrel intermediate said restraining member and said tensioning means; and at least two severing means mounted uniformly about said mandrel and adapted for being radially moved into and out of severing engagement with the thin-walled tubing about said mandrel intermediate said restraining member and said tensioning means.

Abstract: Apparatus for dispensing fabric from a bolt in which the bolt is cradled in a loop of an endless belt and unwound by driving the belt. The length of fabric unwound is accurately measured by measuring the distance of belt travel, and provision is made for presetting the length of fabric to be unwound, manually starting the belt to unwind the fabric, automatically starting measurement of the length unwound when the leading end of the fabric passes a predetermined point, and automatically stopping the belt when the preset length has been measured. The fabric unwound from the belt is automatically folded, and presented for being cut.

Abstract: This disclosure pertains to an arm adapted to be installed below a page in a book. The arm is secured to a shaft that is biased to urge the arm in a position which causes the page to be turned. A solenoid coil, operated by a battery and foot switch, releases the shaft allowing the bias means to turn the page. Spring clips carrying a frame are secured to the marginal edges of the book cover. The shaft, spring, and solenoid coil are carried by the frame.

Abstract: A cutting apparatus, suitable for cutting or shearing a moving web, comprises first and second wire segments that contact each other at substantially a single point and includes means for causing the point of contact to travel along the length of the wire segments to accomplish the cutting of a web positioned between the wire segments.

Abstract: An insertable tooth for use in a slasher for paper pulp manufacture is disclosed to have a flat elongated plate of steel of even thickness having a rounded base and substantially parallel leading and following edges with a V-shaped groove extending along a lower major portion of the leading and following edges. The tooth also has a planar top angularly extending from a lower point on the following edge toward a higher point near the leading edge. A blade of a material having a hardness of at least 9 MOHS is inserted in a notch at the high point of the leading edge. The blade is in the form of a cubic trapezoid, the base of which is arranged essentially flush with the leading edge. The width of the base of the blade is greater than the thickness of the plate of steel forming the tooth. The sides of the blade are relieved from the base while the upper surface of the blade is arranged nearly coplanarly with or slightly above the planar top of the tooth.

Abstract: A circuit arrangement for generating the tones of a tonal scale includes a master oscillator and a number of sets of frequency converters. The output signals of each set of frequency converters forms each of the tones of an octave. A frequency shifter is connected between at least one selected set of frequency converters and the master oscillator in order to shift the frequency supplied to the selected set of frequency converters from the master oscillator to cause a desired shift in the frequency of each of the tones of the octave produced by the selected set of frequency converters.

Abstract: A digital type electronic musical instrument generates a tone signal consisting of a plurality of time-varying partial tone signals each by recursive calculation. A recursive calculator is of a simplified construction by arranging the amplitude term to be excluded from the recursive calculation and to be multiplied thereafter. A remarkable reduction in the memory units can be accomplished by arranging the pair of initial values for each partial tone function to be equal to each other by the introduction of a phase term into the periodic part of the partial tone function.