Abstract: A system for coding and identifying an article is provided wherein a plurality of pellets are secured to the article. The pellets are each constructed from a known material and the thickness of the pellets vary. Each pellet may be identified by the measurement of the time that it takes for a known traveling wave, e.g. an ultrasonic wave, to pass through it.

Abstract: A method for ultrasonic fault localization, in which the fault is determined from the travel time of the ultrasound pulses and the echo pulses, in which an echo pulse reflected in the workpiece at a fault is received at three different points on the surface, the electronic echo pulses are electronically added in phase with a delay dependent on the different propagation times, and fed to an electronic time window such that during the open time of the time window, only echo pulses from the fault are picked up. The fault is displayed graphically as to size, position and shape.

Abstract: Disclosed is a method and apparatus for measuring and/or continuously recording small pressure differences by means of a novel manometer-like device. Accuracies of plus or minus about 0.05 dynes/square centimeter are achieved by means of a disclosed device which can measure, record, and self-calibrate.

Abstract: A sled for use in tractor pulling contests, and the like, comprising a frame supported on front and rear wheels, a ballast mass supported by the frame, a pan adapted for sliding frictional engagement with the ground, and an articulated linkage mechanism for transfering the weight of the ballast from the wheels to pan. As the sled is pulled, the linkage mechanism, which is driven by rotation of the rear wheels, progressively shifts the weight of the sled from the wheels to the pan, by lowering the pan relative to the frame. The suspension springs for the rear axle have a greater vertical stroke than those for the front. Therefore, although the front wheels may ultimately be completely lifted from the ground during the weight transfer, the rear wheels always contact the ground with a force sufficient to drive the linkage mechanism. suBACKGROUND OF THE INVENTIONTractor pulling contests have become increasingly popular.

Abstract: The invented method for sampling freeze-segregated material comprises determining a position in the segregated pattern where the elemental concentration is the same as the initial concentration, and taking a sample either at, or around the position so that the sample as a whole also has the same composition as the initial concentration.

Abstract: A system for taking samples of materials undergoing processing in a rotary kiln is disclosed in the form of a first or inner member mounted on and passing through the kiln shell and containing a chamber in direct communication with the kiln interior; a second or outer member forming an outer chamber and having one end connected to said first member; and a pivotable swing gate disposed between the inner and outer members for controlling communication between the two chambers. The outer end of the outer member has an adaptor for removably mounting a material-collecting vessel or catch can thereon. Opening of the swing gate will permit material from the kiln interior to enter the catch can without contact with the ambient environment, and subsequent closing of the swing gate permits sealing of the inner chamber in communication with the kiln interior before removal of the catch can and its contents from the end of the outer member.

Abstract: Electrical and mechanical synchronization of two or more synchronously driven gyroscopes, mounted on the same platform, to minimize cross-talk induced drift, is achieved by bringing one gyroscope to a speed which is slightly higher than the other by driving it at a slightly higher frequency. At speed, coincidence of mechanical position is established by means of signals from pick-offs on each gyro and the drive for the faster gyroscope is shifted to the lower frequency. Electrical synchronism is established by restarting the lower frequency generator to instantaneously establish a predetermined relationship between a pick-off signal and the frequency generator. Phase-lock start-up of a single gyroscope by instantaneous shift of the phase of the driving voltage, relative to the gyroscope wheel position, is also provided.

Abstract: The invention relates to a device for righting and stabilizing a gyro vertical comprising: a disc arranged on the gyro housing and perpendicular to the gyro spin axis to be driven in the same sense as the gyro rotor, a cavity provided in the disc and a liquid drop movable in the cavity, the cavity being formed such that the liquid drop, with an inclination of the gyro spin axis with respect to the vertical, flows downhill into an edge portion of the cavity remote from the gyro spin axis, in which cavity it is taken along and lifted by the wall of the cavity in an angle range, thereby producing a righting torque.

Abstract: A well sucker rod shock absorber apparatus employs cushion means located transversely of the rod string. Cushion means may also be located in association with the drive for the pumping unit that reciprocates the rod string.

Abstract: A speed change mechanism of the type having a gear change yoke actuated by a travelling ball nut on a screw includes a load-bearing saddle slidably mounted over the nut. The saddle provides for avoidance of radial loads on the nut and screw via the yoke, while allowing for transmission of axial loads between said members. The yoke moves between first and second limits of movement and contains a provision for relief of axial loads to the nut and screw whenever the yoke is positioned at either of said limits.

Abstract: A shock absorber apparatus connected in series relationship respective to the polished rod and bridle of a pumpjack unit. The shock absorber includes a housing within which there is supported a plurality of resilient packer members stacked in sandwiched relationship. The packer members have an axial passageway formed therethrough, with the passageway of each packer member being aligned with one another, so that the polished rod is telescopingly received therethrough. The bottom of the housing is supported by the bridle, while the polished rod is supported by a plate member which bears against the uppermost packer member. This places all of the resilient packer members in compression, with the force of the compression being proportional to the weight of the sucker rod.

Abstract: A control mechanism for use with a hydraulic locking device to permit the device to be unlocked under control of an operator. The control mechanism includes a lever assembly fastened to the piston rod of the hydraulic control device and connected by a cable to a remotely located push button assembly. When the operator presses the push button, the cable is drawn causing the lever assembly to move an operating rod of the hydraulic locking device to a release position thereby unlocking the device. The lever assembly can be installed on the hydraulic locking device without the use of tools by sliding a spring clip which is a non-removable portion of the lever assembly. A threaded collar permits the effective length of the conduit to be altered to adjust the stroke of the mechanism. The spring cip is made to serve a dual purpose.

Abstract: A handle bar fixing device for a bicycle, which is used to fix a handle bar to a cylindrical holding portion attached to the utmost end of a lug provided at a handle stem. At the lug is provided a through bore which extends lengthwise of the lug, opens at one end into the holding portion and at the other end onto the stem body, and has a screw thread in part. A control member with two first and second screw threads different in pitch angle and in the direction of screw, is screwed with the through bore by way of the first screw thread. A pusher having a screw member screwable with the second screw thread is supported axially movably only to a first end portion of the through bore opening into the holding portion. The control member is rotated to force the pusher to move lengthwise of the lug so that the handle bar inserted through the holding portion may be fixed thereto.

Abstract: A heavy duty hydromechanical transmission adapted for agricultural and industrial type tractors and for heavy duty construction type vehicles as well as line haul tractors is disclosed. The transmission utilizes an input shaft which is driven by a power source and drives dual planetary gear sets. These planetary gear assemblies are each geared to two separate variable displacement hydrostatic pump and/or motor units which are arranged in a closed hydrostatic fluid flow circuit. Each planetary gear set also drives a countershaft which is utilized as part of a multispeed transmission. The hydrostatic units are used as variable displacement pumps or motors to obtain smooth starting and to eliminate the need for a conventional master clutch normally used for starting a vehicle or for shifting gears. These units are also used to provide the high-starting torque through hydraulic torque regeneration.

Abstract: An automatic transmission for vehicles having an internal combustion engine and driving wheels which includes a continuously variable transmission device connected with an engine output for continuously variably transmitting a partial torque from the engine in accordance with the conditions of vehicle speed and degree of engine throttling, a counter shaft connected with the engine output and transmitting the remainder of the torque from the engine, a combiner gear mechanism receiving the torque from the engine through the counter shaft and the continuously variable transmission device, a fluid torque converter for converting torque from the gear mechanism and transmitting the torque to the driving wheels and a reverse drive mechanism interposed between the engine and the torque converter for reversely transmitting the torque from the engine to the driving wheels.

Abstract: The invention pertains to rotary volumetric apparatus comprising a stationary framework and a rotary assembly mounted thereon. The rotary assembly includes a rotary shaft. The apparatus further includes a reciprocating drive engine and a driven member connected to the rotary shaft. A linkage system drivingly connects the driven member to the engine for rotation in a first direction upon reciprocating movement of the engine in a first directional mode and for rotation in a second direction opposite the first direction upon reciprocating movement of the engine in a second directional mode opposite the first mode. A clutch interconnects the driven member and the shaft and is operative upon rotation of the driven member in the first direction to cause rotation of the shaft therewith, and upon rotation of the driven member in the second direction, to permit relative rotation between the driven member and the shaft, whereby the shaft is rotated by the drive engine in temporally spaced increments.

Abstract: Screw driving apparatus in which a slide is movable back and forth on a support and is formed with a chute extending in the slide away from the support toward an open end of the chute, and with an access opening to the chute. A driver is mounted on the support for rotation in the chute and for movement in the chute toward and away from the open end in response to the back-and-forth movement of the slide. The slide carries a control plate capable of limited movement relative to the slide between two terminal positions spaced in the direction of slide movement. Two jaws are pivotally mounted on the slide and may jointly obstruct the open end of the chute. A jaw operating member on the control plate engages the jaws and moves them toward and away from the chute-obstructing position in response to movement of the control plate between its terminal positions which is caused by motion transmitting elements on the support when the slide moves back and forth.

Abstract: A machine tool is provided with an arrangement for increasing its precision by compensating for deviations in tool positioning caused by factors, such as elastic deformation of the machine structure, which vary in their effect in dependence on the current working state of the machine tool. The arrangement includes a compensator device arranged to physically act upon the machine tool to cancel at least one deviation component, and signal processing means controlling the action of the compensator device in dependence on the current machine working state as sensed by a plurality of transducers. The signal processing means stores data interrelating the machine working state to a corresponding appropriate magnitude of action of the compensator device.

Abstract: For accurate correlation of the punch pins and edge guide for a paper punch or the like, a gage sheet of predetermined length is formed with accurately located holes corresponding to the desired location of the holes or slots to be punched in paper of similar length (e.g., end holes equidistant from top and bottom of the sheets). Such gage sheet may be pre-punched and of a permanent character, or may be prepared by trial and error by adjusting the edge guide until the end holes are equidistant from the edges of the sheet. The punch pins are lined up with the gage holes and then the edge guide is moved snugly against the edge of the gage. The gage is then removed. The edge guide is mounted on a transversely movable slide visible through a window in the platen on which the paper is to rest. Markings for different paper lengths may be permanently displayed on the platen at an edge of the window. Markings on the platen may be affixed by applying thereto a decal having paper length markings thereon.

Abstract: A method and device for forming openings in a gelatinous substance in a Petri dish in which the Petri dish (6) is lifted towards punch tools (19) until the tools have penetrated the gelatinous substance and are on or near the base of the dish. The dish is then moved with a low amplitude motion perpendicular to the penetration direction, i.e. horizontally to loosen a pellet of the gelatinous substance within each punch tool from the base (6a) of the dish, and finally the dish is lowered to withdraw the punch tools (19) from the dish while suction applied to a compartment (4) communicating with the interior of each tool extracts the punched pellet and clears the tool for a subsequent penetration in the same or a different dish (6).

Abstract: A method of punching a wheel for a pneumatic tire and wheel assembly manufactured with mounting holes offset from the geometric center to locate the low point of the first harmonic of radial runout adjacent a given angular location, such as the valve hole, so that, when a tire is mounted thereon with the high point of the first harmonic of radial force variation aligned with the valve hole, the respective harmonics cancel each other to provide a tire and wheel assembly with enhanced rotational characteristics. In an apparatus for forming the wheel mounting holes by axially reciprocating a piercing tool against a wheel disc while the bead seats are clamped between wheel locating jaws, axially opposed jaw pairs are centered on an axis offset from the axis of reciprocation such that the centerline of the mounting holes is correspondingly eccentrically offset from the average bead seat axis.

Abstract: An improved apparatus for producing and dispensing place mats from a roll of sheet material including curved guide member cooperating with said apparatus to receive said place mats and to curl upwardly the side edge portions thereof permitting said place mat to extend outwardly from said apparatus in cantilever fashion to facilitate handling of said place mat as by positioning it on a tray or the like. When the place mat is removed, the apparatus automatically produces another one extending out of the apparatus for easy handling.

Abstract: A flying cutoff machine for severing elongated material moving continuously longitudinally of its length wherein a die carriage is attachable to the material for movement therewith and includes a reciprocating cutting blade for severing the material. The machine has a frame with a bed slidably supporting the carriage and an elongated ram extending parallel to the bed with the ram being supported through a link and slide arrangement so that the ram is maintained parallel to the bed. The ram is driven by a single crank arrangement to move in a orbital path relative to the bed during sliding movement on the slide member which supports the ram.

Abstract: A sheet material cutting apparatus that is adjustable to cut pieces of insulation for duct work transition pieces or the like. First and second elongated support members are provided each having a cutting tool mounted thereon and movable along the length thereof. The support members are mounted at their opposite ends to first and second guide members, being pivotally movable with respect to the guide members and the support members being linearly movable with respect to the pivotal mounts. A cutting table is disposed beneath the cutting tools. The support members can be adjusted to any relative angular position with respect to each other, and with respect to the guide members, to cut out a wide variety of shapes of material from sheet material disposed on the support table. The guide members are also mounted so that the spacing therebetween is adjustable. Automatic or semi-automatic cutting of the sheet material may be effected using the cutting apparatus.

Abstract: The shears have a lower blade and an upper blade. The upper blade is reciprocated with respect to the lower blade through a transmission. The transmission includes a first eccentric which is continuously rotated to continuously reciprocate the upper blade over a vertical stroke equal to the throw of the first eccentric. This throw is transmitted to the upper blade through a second eccentric surrounding the first. The second eccentric is quickly rotatable, between two positions. In the first position, the upper blade is always clear of a billet on the lower blade. In the second position, the upper blade cuts the billet during the reciprocation. To ensure that the upper blade only penetrates approximately half the thickness of the billet, the position of the lower blade is vertically adjustable.

Abstract: A sequence of timing signals is generated having a time spacing corresponding to the average spacing between successive actuations of a control switch. The system automatically starts a new calculation if the control switch is actuated at least two times with a time spacing less than some prespecified threshold time. The data input process is self-terminated when a time interval equal to the threshold time expires after an actuation of the control switch. The generated sequence of timing signals can be used as the metronome clock for an automatic rhythm generator.

Abstract: The tone production system for an electronic musical instrument comprises depressed key detection means for outputting pulses at a timing corresponding to a key depressed by time division timings assigned to each note, a shift register for shifting successively said pulses outputted from said depressed key detecting means in synchronism with said time division timing, key data forming means for taking out each output pulse of predetermined plural stages of said shift register in accordance with a desired type of chord, musical tone production means for producing each of plural musical tone signals of notes corresponding to pulse generation timings in accordance with each pulse taken out by said key data forming means.

Abstract: A keyboard operated electronic musical instrument with polyphonic portamento and glissando effects in which each key controls one of a number of tone generators through a table of frequency numbers. The frequency transitions are achieved by subtracting the frequency number of a new note from the frequency number controlling the current frequency of an assigned tone generator. A predetermined fraction of the difference is stored in increment registers and added successively to the frequency numbers of the current notes until these numbers are equal to the frequency number of the new note. The addition rate, which determines the frequency transition time, is adjustable by means of a variable frequency time clock. The assignment of the tone generators to the actuated keyswitches is accomplished in a manner which prevents objectionable frequency cross-over transitions even when the number of notes in successive chords is changed.

Abstract: An electronic musical instrument comprises a sound generator connected to a loudspeaker by way of several parallel channels including respective delay lines constituted by charge-transfer devices of the bucket-brigade type stepped by different high-frequency pulse generators. Each pulse generator comprises a voltage-controlled oscillator whose output frequency is varied by a composite periodic signal obtained from a respective stage of a chain of operational amplifiers each provided, except possibly for the first stage, with an RC network acting as a frequency-dependent phase shifter for a nonsinusoidal modulating signal consisting of at least two sub-audio-frequency components. The modulating signal may be synthesized from a plurality of stepped waveforms generated by the concurrent readout, at different sampling rates, of a set of amplitude values stored in a read-only memory.

Abstract: A bridge for a stringed instrument, preferably a violin, for enhancing the volume and tonal quality of the instrument. The bridge is constructed of wood and has a broad fan-shaped face and a pair of depending lower legs having a U-shaped indentation between them. The face has a pattern of a plurality of holes drilled therethrough to improve the sensitivity of the bridge, thereby improving its quality. An alternate embodiment includes slots cut through the drilled holes.

Abstract: The specification discloses a tone changer for a guitar (12) having a multiple pull actuator mechanism (14). One or more of the guitar strings are tightened in response to pulling a lever arm (22) away from the guitar (12), or by pushing the lever arm (30) towards the guitar (12), or by pulling the lever arm (26) upwardly in a rotational plane parallel to the rear side of the guitar (12). Straps (16) and (18) are connected between the lever arms (22) and (26), respectively, and are connected at their other end to the performer for selectively imparting an appropriate force on the lever arms. An extension arm (32) is connected to the lever arm (30) for engaging the performer to push the lever arm inwardly towards the guitar (12).

Abstract: An automatic note analyzer is disclosed which automatically generates and displays a note signal indicative of the musical note corresponding to an input signal. The disclosed analyzer operates to measure the period of the input signal on a regular basis. According to one aspect of the invention, the measured period is compared with a predetermined window representative of the expected value of the measured period. Measured periods which do not fall within the predetermined window are rejected. According to a second feature, measured signals representative of the period of the input signal are averaged in order to increase the stability of the analyzer. The disclosed analyzer operates in two modes: an absolute mode, and a transposer mode. In the absolute mode the displayed note value is determined with reference to an absolute pitch. In the transposer mode, the displayed note value is determined with reference to a relative pitch which can be readily adjusted as needed.

Abstract: A target acquisition and designation system is disclosed which enables an aircraft to perform aerial reconnaissance and surveillance, strikes of fixed or mobile targets, and other defense missions while at an altitude below which detection by enemy radar is effective. The system utilizes a very small, stealthy, unmanned glider equipped with a Forward Looking Infrared (FLIR) image sensor and a laser designator. The glider is towed by the aircraft and remotely controlled to fly at an elevation high above the aircraft where the FLIR and laser designator can be effectively utilized. A lightweight towline comprising one or more load-bearing tension members surrounded by a flexible member having a symmetrical streamlined exterior shape substantially reduces drag and allows the glider to be deployed from conventional aircraft.

Abstract: A fluid motor control system (11) assures that automatic changes of motor displacement, which are initiated by occurrence of a predetermined operational condition in the system (11), result in a change of motor speed of the desired magnitude. Flow adjustment elements (76) respond to a displacement increase by reducing the flow of working fluid available to the motor or motors (12, 13) and respond to a motor displacement reduction by increasing the available flow. In one specific form, the system (11) controls a pair of right and left side vehicle drive motors (12, 13) and automatically increases motor displacements while reducing the fluid flow supplied to the motors (12, 13) to reduce travel speed during a turn of travel direction.

Abstract: An improvement in a reciprocating engine used in an energy recovery system wherein the inlet valves to the cylinders of the engine are operated by independently time adjustable actuating means.The system for recovering energy from a pressured reactor comprising a reactor, a reciprocating engine connected to the reactor to receive reaction effluent from said reactor thereby driving the pistons of the reciprocating engine by expansion of the effluent and recovery apparatus downstream of the engine for recovering products from the effluent.The expanding reactor effluent is used to drive the pistons which are especially valved in conjunction with the effluent inlet port in the cylinder to facilitate handling the effluents to adjust the flow into an expansion chamber to obtain maximum recovery, the pistons in turn operate a crankshaft through a crosshead which may power compressors or operate a generator to produce electricity.

Abstract: A load relief device for a power steering system of a vehicle. The load relief device provides release of loads from a hydraulic pressure supply pump of the power steering system when the output member of the system is near the end of its stroke by short-circuiting between a hydraulic pressure source and an oil reservoir of the power steering system. The load relief device includes an assembly for detecting the end of a stroke being executed by the power steering system, and upon detection of the end of the stroke, the assembly operates to bring a four-way valve of an open center type to a neutral position thereof, regardless of the steering torque being applied to the power steering system.

Abstract: A reaction structure of a brake booster comprises a deformable reaction disc with a peripheral edge rounded at a radius off corresonding to the radius of the rounded edge of a larger bore receiving the reaction disc. On a brake operation, the reaction disc is coaxially compressed between a second valve element interposed with a clearance thereto and connected to an input pushing rod and a power output rod, thereby resulting in a definite jumping value without indefinite delay of output power rise.

Abstract: A pneumatic operating device, e.g. for controlling valves, includes a cylinder (2) in which a piston (12) is movable. The piston has an axially extending rack part (11) having teeth which engage with teeth on an operating element (10) arranged in the cylinder wall (2b) for rotation transversely of the longitudinal axis of the piston and passing sealingly through said cylinder wall. The piston (12) is provided on the side opposite its rack part with a recess (24) for receiving a part of a spring (26) for the return movement of the piston. The recess (24) extends substantially into the rack part (11) of the piston, preferably through a distance of such length that it extends axially approximately up to or beyond a radial line perpendicular to the piston axis through the center of rotation of the operating element even when the piston is in a position in which the spring is compressed to its maximum.

Abstract: A fire-safe valve actuator which cooperates with a bolted bonnet type valve to define a bolt chamber with an exterior shroud supporting the actuator housing and providing a substantially imperfect barrier to prevent an external fire from coming into direct contact with the bolts or studs and nuts that connect the bonnet to the valve body. The bolt chamber may also be filled with an insulation material. The actuator may have a return spring connected to the actuator stem through a bearing so that the winding and unwinding of the spring does not result in any substantial torque being applied to the actuator stem. Similarly, any diaphragm in the actuator can be connected to the actuator stem by a bearing so that rotation of the stem will not impart torque to the diaphragm.

Abstract: To provide for separate expansion control actions at the top and bottom edges of the skirt of an expansion-controlled light alloy piston, to prevent a direct propagation of deformation between the top and bottom edges of the skirt and to reduce the skirt area between the top and bottom edges of the skirt, the skirt of the piston is provided at its periphery with a transverse slot, which extends around the entire periphery of the skirt or part thereof and is disposed on the level of the piston pin boss.

Abstract: Coffee and tea making or brewing apparatus of the type in which heated water is caused to flow through a spray head, the resulting spray impinging on a bed of ground coffee (or tea) through which the hot water passes to produce coffee or tea liquor.In accordance with the invention the spray head is provided with a number of dimples. The heads of the dimples being provided or formed with a surface to which a drop of liquid emerging through a spray hole in the dimple, may cling.With this construction the drops fall over the coffee or tea bed in a random fashion which may be compared with raindrops and this helps properly to prevent nuclei being formed in the coffee bed.

Abstract: The invention relates to a device in a machine for trimming vegetables, especially Brussels sprouts, by means of a rotary cutter forming the bottom of a trapezoidal groove (3), which is formed by the inclined sides (2) of a pair of rotary flanges, the vegetables being caused by the action of the rotary flanges and stationary holding means (5-12) to perform a rotary movement around themselves at the same time as they follow the rotary flanges in the groove (3) between them, and projecting parts of the vegetables are exposed to the cutter and trimmed off.

Abstract: An improved method is provided for wrapping generally cylindrical bales of hay with twine to maintain the structural integrity thereof, in which a unique pattern of twine bindings is utilized to achieve greater strength and reliability. A related form of improved bale wrapping apparatus is also provided, in which the electrically driven twine guiding tube is electrically controlled in manner to automatically produce the pattern of bindings contemplated by the method, and which requires operator attention or control only for initiating the otherwise automatic operating cycle. The method and apparatus significantly utilize time reference techniques correlated with the known rate of rotation of the bale to produce the improved pattern of bindings and to control the production thereof automatically.

Abstract: A hydraulic cylinder is mounted on a support adjacent a bale forming chamber of an agricultural baler. A piston driven rod extends from the cylinder for moving a tension member associated with the bale chamber. Distortion, created by welds, is avoided because no welds are used to support a rod bearing portion of the cylinder. Instead, fasteners extend through the support and directly into the rod bearing portion of the hydraulic cylinder.

Abstract: To suppress bending oscillations, particularly when tensioning or blanket attachment grooves of operating cylinders of a rotary printing machine, specifically of an offset printing machine, are engaged with each other, bearings (4) are supported by tensioning bars (3), one end of which is pressed by a stop (17) or a cam (5) towards the bearing, the other being tensioned by a spring (7) or hydraulic (40-44) arrangement thereagainst. The cam can be released from pressing position upon receiving a "stop print" command. Alternatively, rather than pressing the ends of the pressure bar (3) against fixed portions, for example the side walls (18, 28) of the machine, two adjacent cylinders can be pressed against each other by connecting the respective ends of the pressure bars together, one of the connections preferably including a releasable, for example hydraulic pressure loaded joint (23) and the other having the spring or fluid pressure tensioning force applied thereto.

Abstract: The invention relates to a hot-wire ignition initiator for propellant charges for artillery and rockets.This initiator comprises a housing 1 provided with an open cavity 2 within which there is arranged a filament 3 and a pyrotechnic cell composed: (a) of an initiator pyrotechnic composition 5 formed of an oxidant and a reducer, which composition is arranged in intimate contact with the filament, the coefficient of sensitivity to impact of which is at least equal to 100 joules, the coefficient of sensitivity to friction of which is at least 100 N, the coefficient of sensitivity to static electricity of which is about 16 millijoules and the ignition temperature of which is between 250.degree. and 350.degree. C.

Abstract: The invention pertains to an improved annular shaped charge of a type to be used in the shaped charge carrier of pipe cutting or severing apparatus. The improved annular shaped charge is made up of eight or more shaped charge segments disposed in side to side abutting relation. Each shaped charge segment has a die formed metal band and charge load. The invention also pertains to methods of making said annular shaped charge and the shaped charge segments, which methods are described.

Abstract: A track construction for a self-propelled vehicle includes a pair of longitudinally extending track members connected in transversely spaced relation by arch-shaped yokes which extend upwardly over the track members and from which a conductor rail is suspended in vertically spaced centered relation with the track members, the conductor rail being engageable by collectors on the vehicle for powering a vehicle drive motor. At a junction between main and branch line track members and conductor rails, co-axially pivoted, independently movable, track and conductor rail switch tongues are mounted and are interconnected by a differential motion transmitting mechanism which causes one of the switch tongues to move between main and branch positions in response to a different extent of movement of the other switch tongue between such positions.

Abstract: In a power-and-free trolley conveyor, a carrier is transferred from a first power line to a second power line separated therefrom by being pushed forward from behind with a following pusher dog on the first power line.

Abstract: A trolley for supporting and transporting units of electronic equipment is provided with a front pair of legs and a rear pair of legs, with horizontal members being integrally formed with each pair of legs. A platform is supported upon the horizontal member of the rear legs and upon a mount member rotatably mounted upon the horizontal member of the front pair of legs. Supporting brackets are fixed to each of the rear legs, upon which are attached retaining brackets, with the horizontal member of the front legs being retained within these retaining brackets in rotatable manner. Link members are rotatably coupled to the lower ends of the legs, in such a way that the entire assembly may be folded together into a very compact space. Greatly increased strength and rigidity by comparison with conventional trolleys is ensured.