Abstract: Apparatus for providing a secure weathertight joint between a pair of coplanar building panels that includes a web passing upwardly through the seam of the joint. A pair of opposed downwardly turned runners depend obliquely from either side of the raised web and along the entire length of the joint. The adjacent ends of the two panels that form the seam are turned upwardly to pass under the runners. An elongated V-shaped spring closure is seated upon the runners with the inside surface of each closure leg being biased against the top surface of one of the runners. A locking pad is secured to the inside wall of each closure leg that snaps over the end of the adjacent runner to secure the parts in assembly.

Abstract: A partition and paneling system comprises connecting means for joining of abutting wall panels together to form an integral wall. The connecting means includes a head section supporting the ceiling and connected to the conventional overhead steel work or black iron. Downwardly extending top guide channels are mounted to the head section and the upper portion of a fastening member is located within the top guide channels and extends downwardly therefrom. The fastening member comprises an enlarged upper portion, an elongated intermediate portion having tapered wedged-shaped blocks at intermediate portions therealong and a lower enlarged portion having a threaded axial aperture which is engaged by a threaded rod. The rod is locked in the lower enlarged portion at one end and has an outwardly extending block at the lower end thereof and an elongated lock nut mounted thereto.

Abstract: A device for securing together crossing re-inforced rods or bars, commonly referred to as rebar, and comprising a spring wire clip having a curved saddle-shaped mid-portion formed to seat on the posterior side of the vertical rebar, i.e., the side away from the horizontal rebar, and having a pair of parallel legs dimensioned to extend across the top of the horizontal rebar and curved in parallel vertical planes to provide concavities to receive, grip and provide vertical support for the horizontal rebar. The clip is formed for manual application in a one-handed operation.

Abstract: A fill belt (conveyor) carries boxes successively to a fill position where the magnetic articles (steel needles) are introduced into each box. They are fed from a vibrating bowl, controlled by a solenoid actuated gate. As the articles approach the box in a spout, they are demagnetized to facilitate flow thereof. As they are placed in the box they are magnetized in the box to align them in proper position. This magnetizing alignment is performed in a series of steps, and they are demagnetized after each step, including the final step when they are in their final condition for use. The quantity of articles in a box is sensed by a Hall generator sensor which utilizes the magnetic field in the articles for producing a control signal. While the articles are being deposited in the box, the spout is reciprocated along the path of the fill belt through the range of the box.

Abstract: An apparatus for removing the content from envelopes having two adjacent edges opened by slitting or cutting is equipped with two facing suction devices. At least one suction device is movable perpendicular to the envelope plane for separating the envelope. During the operating phase, one suction device is movable with respect to the other in the envelope plane in order to effect a relative movement between the envelope and the contents of the envelope. This facilitates removal because the envelope held by the suction device is additionally deformed, i.e., given a corrugated configuration by the movement in the envelope plane. As a result, easy removal of the envelope content is possible.

Abstract: Apparatus for producing discrete blanks from a web of foil or the like is provided, in which the foil or the like are given continuous constrained guidance during the phase between separation of the web until transfer to a packet or packing machine. The web is transported into the system between a first pair of pulling rollers then transferred to a conveyor of two spaced belts. The belts are provided with a series of apertures through which a suction is pulled to hold the transported web. The belts diverge slightly and pull the web at a higher speed than the first pair of rollers so that the web is stretched both lengthwise and transversely. Severance from the web is carried out in at least one initial cut, followed by a main cut, during continuous constrained guidance.

Abstract: A method and apparatus for filling open-top containers with a flowable semi-solid material in which the material is discharged in substantially continuous fashion to a downwardly opening nozzle. An empty container is elevated into partial telescoping relative with the nozzle and moves downwardly as it is filled. The filled container is moved crosswise of the nozzle and the vertical position of the container relative to the nozzle is controlled during movement crosswise of the nozzle to initially maintain the upper edge of the filled container below the lowre edge of the nozzle at its discharge side to shear off material at a level above the top of the container and to thereafter move the filled container upwardly sufficient to cause the trailing upper edge of the filled container to substantially wipe across the lower edge of the nozzle at the discharge side thereof.

Abstract: The disclosure concerns an apparatus and method for wrapping products in stretch film by placing each product on a product support table having collapsible fingers. A pivotable frame is loaded with successive lengths of stretch film and pivoted down over each product placed on the support table. Tucking blades mounted on the frame tuck the side edges of the film under the product, while infeed and outfeed rollers tuck the front and back edges under the product. Pusher means then advance the product onto the outfeed conveyor to complete the front tuck and seal the film beneath the product.

Abstract: A banding machine for continuously forming and applying the bands on articles comprises means for arranging rows of the articles, means for receiving the articles at the front end of the arranging means and transferring the articles to a band receiving position, means for supplying at least one tubular member to be fabricated into a band, and fabricating and positioning means to continuously fabricate bands from the respective tubular member and secure the bands around the articles retained at the band receiving position by the receiving and transferring means.

Abstract: A vacuum operated fruit harvesting machine is disclosed for harvesting fruit from fruit trees. The fruit harvesting machine of the invention comprises a picker head connected to an airflow control valve. A discharge valve is connected to the airflow control valve by means of a plurality of rigid or flexible conduits. The picker head comprises a conduit having the internal wall portion. A gripper is angularly positioned relative to the internal wall of the curved conduit for gripping the stem of the fruit. As the fruit is conducted into the picker head, the fruit pivots against the internal wall which functions as a fulcrum causing the stem to be peeled away from the fruit at the calex thereof.

Abstract: Apparatus for tracking the paths of helical grooves at the periphery of a longitudinal core driven in translation. The apparatus comprises two disks (11, 12) fitted onto said core, said disks being connected together by metal wires (13) forming a spring which presses on the grooves (21, 22) to track their apparent rotation when said core (2) moves in translation.Application to laying optical fibres on a grooved carrier core.

Abstract: An optical fibre cable comprises a support structure having helical grooves around its periphery. Optical fibres are laid in the grooves. Said fibre-containing grooves (2) are then partially untwisted in the direction of the arrow (4), thereby lengthening the pitch of the grooves and hence lengthening the fibres relative to the grooves.

Abstract: A process and apparatus for producing a twisted elastic thread in which an elastomeric thread of substantially 154 dtex to 310 dtex, is adhesively twisted with two yarns. The thickness of each of the two yarns is substantially of 100 to 12,500 dtex, and the yarns preferably are OE yarns of polyvinyl chloride, polyvinyl cyanide, polyacrylonitrile and/or wool threads, preferably produced by the rotor process. Prior to twisting, the yarns are surface-swelled under a vacuum between substantialy 0.1 and 0.2 bar in superheated steam at substantially 70.degree. C. for up to ten minutes for loosening purposes. During twisting, a pre-tension is imparted to the elastomeric thread with respect to the yarns. Such pre-tension is imparted to the elastomeric thread only a predetermined time after starting the twister, and the elastomeric thread is pre-tensioned by substantially 2 to substantially 5 times compared with the yarns.

Abstract: An internal combustion engine which is adapted to be supercharged by at least two exhaust gas turbochargers operating in parallel. The engine includes an auxiliary combustion chamber, the exhaust gas of which is temporarily fed to a turbine of an exhaust gas turbocharger for improving an acceleration characteristic of the internal combustion engine. Combustion air for an idling operation of the auxiliary combustion chamber is derived from a stream of supercharging air produced by the exhaust gas turbocharger. During a partial load operation of the engine, only one of the exhaust gas turbochargers is supplied with an entire volume of the exhaust gas of the internal combustion engine to provide the supply of supercharging air. The exhaust gas from the auxiliary combustion chamber, operated with a full load for the case of accelerating in a lower load range of operation of the internal combustion engine, is fed to the turbine of the other exhaust gas turbocharger.

Abstract: A system for rapidly warming up a catalytic converter provided to an automotive internal combustion engine to purify the exhaust gas. The system includes a vacuum-operated device to increase the opening degree of the throttle valve by a predetermined degree to thereby increase the quantity of the exhaust gas and another vacuum-operated device to retard the ignition timing of the engine to a predetermined extent to thereby raise the temperature of the exhaust gas. The two devices are connected by a vacuum passage to the intake passage of the engine at a section downstream of the throttle valve in series, and an electromagnetic valve renders the vacuum passage effective to thereby actuate the vacuum-operated devices only when the engine is idling under cold condition. Because of the series connection of the two devices, an intake vacuum is applied to the two devices in desirable sequence.

Abstract: An exhaust assembly for a tractor having a pivotal or slidable engine hood that must be moved out of the way to permit an operator complete access into the engine compartment. The exhaust assembly includes a tubular housing positioned within the engine compartment below the top surface of the engine hood. The tubular housing has a cylindrically shaped inlet conduit adapted to be connected to the exhaust manifold of the tractor engine. Exhaust gases are forced vertically into the inlet conduit and then directed in a horizontal swirling fashion through the tubular housing by apertures and baffles along the length of the inlet conduit. The tubular housing further includes a cylindrically shaped outlet conduit having an open conical discharge end which is in close proximity to the lower end of an elongated exhaust tube that is attached to the engine hood.

Abstract: A generator is operated by stored energy derived from an elongated unit providing expanding and contracting forces when subjected to a temperature cycle within a predetermined range. These forces are utilized to drive a rack which is in mesh with a pinion on a drive shaft connected to at least one generator drive of a type creating, storing, and releasing the stored energy.

Abstract: A hydro-pneumatic operating device for motor vehicle clutches permits shifting into second or higher gears without operation of the clutch pedal, by manipulation of an electric switch that actuates an electro-pneumatic valve. A cylinder block 31 is provided that houses a hydraulic working cylinder having a hydraulic piston of a hydro-pneumatic piston, and a pneumatic servo-valve unit whose path control is actuated by an external operating element which cooperates with a pneumatic servo-piston (14) of the hydro-pneumatic piston (20). On an end face of the pneumatic servo-piston (14) opposite a pneumatic servo-chamber (11) there is a supporting surface 19 whose countersurface 118 is formed on the pneumatic servo-piston (20a) of the hydro-pneumatic piston 20. The other side of pneumatic servo-piston 20a confines a blow-off chamber 22. A cylinder section 13 of a pneumatic working chamber 15 enclosed by the hydraulic pneumatic piston 20 and the pneumatic servo-piston 14 has a connection 66 for pressure medium.

Abstract: In a geothermal energy conversion system of the type having a down-hole turbine pump unit driven by a heated working fluid, a heat exchanger is disposed at the surface of the earth for heating the working fluid. The turbine pump unit pumps the geothermal brine to surface heat exchanger where it is used to heat the working fluid. The same heated working fluid is used to drive the down-hole turbine pump and to drive the power generating equipment at the earth's surface.

Abstract: Swash plate driving means for cryogenic coolers wherein multiple compress and regenerators are driven. The swash plate driving means may drive one or more compressors off one or both sides of each swash plate, and one or more regenerators may simultaneously be driven by separate swash plates. The swash plates are formed to provide flat topped and bottomed repetitive pressure waves.

Abstract: The cryogenic refrigerator includes a movable displacer within an enclosure having first and second chambers of variable volume. A refrigerant fluid is circulated in a fluid path between said chambers by movement of the displacer. A spool valve controls introduction of high pressure fluid and low pressure fluid. The displacer movement is controlled by an electric motor.

Abstract: The invention is related to a tank for liquefied gas composed by a triple wall limiting three successive spaces from which two are insulation spaces.The external insulation space contains a substance able to sublime and condense from gaseous state to solid state when cooled by a flow of liquefied gas caused by accidental failure into space.An application is the construction of the tanks of methane carrier.

Abstract: A method of preparing poultry for fresh-pack handling in which the eviscerated carcasses are first thoroughly washed, then passed through a non-refrigerated water bath to pick up moisture, then tumbled to substantially equalize the moisture content of the carcasses, and to remove some of the picked-up moisture, then gravity drained to remove more of the picked-up moisture, and finally subjected to a supercold atmosphere for a time sufficient to freeze-crust it, whereby to reduce the picked-up moisture to a permissable level and thereafter to stabilize the carcasses against weepage. Routing of the carcasses and the giblets removed during evisceration may be so arranged that freeze-crusted giblets may be stuffed into carcasses before the latter are crusted, for greater ease of handling.

Abstract: In an absorption refrigeration system comprising a generator, a condenser, an evaporator, an absorber, a heat exchanger, and a compressor to improve generator output and performance, a variable valve on the line from the generator to the absorber is provided to maintain constant cooling output.

Abstract: A server for chilled wine and similar beverages or foods includes a generally cylindrically-shaped side wall into which a bottle or other container may be placed. The side wall is constructed of a heat conductive material such as aluminum, copper, alloys thereof, etc., of sufficient thickness to conduct heat as needed in its circumferential direction. The server also includes an ice receptacle formed to surround a side portion of the side wall to hold ice in contact with the side wall. The side wall acts to present the wine container with a surface which is at or below the temperature of the wine. This substantially eliminates the transfer of heat by radiation to the wine container. The server also minimizes conductive and/or convective heat transfer between the wine bottle and the surroundings.

Abstract: The temperature of a biological specimen or other object may be controlled by supporting the object within a vessel containing a liquid cryogen above the liquid cryogen level and varying the vertical spacing between the object and the liquid cryogen level. The vessel is provided with vertically continuous inner walls of high thermal conductivity, e.g., metal walls, to provide a vertical temperature gradient within the vessel above the liquid cryogen level.

Abstract: A pick-proof lock is provided which is rendered difficult or impossible to pick not by virtue of any additional structure or apparatus but due to the intrinsic nature of the tumbler construction wherein all of the tumblers in the row of tumblers are contiguous with adjacent tumblers so that the tumblers may not be individually set by using a pick and the equivalent of a tension wrench because there is no stationary shear plane in the direction of movement of the bolt for the tumblers to be set on.

Abstract: At the end of a hot-rolling train, a metal length (bar or wire) is passed through a final roll stand and then through a cooling device. To keep the length under tension in the cooling device, it is pulled frictionally by an opposed pair of bridle rolls which are driven, while the length is passing, with a power input which would, in the absence of the length, be sufficient to cause a peripheral speed of the bridle rolls slightly higher than the rolling speed of the length. To prevent the leading end of the metal length being twisted or otherwise damaged on entry into the bridle rolls, the bridle rolls are driven at a slightly higher peripheral speed immediately prior to the entry of the metal length.

Abstract: Method for manufacturing a vehicle wheel from a light alloy sheet in which the edge of the sheet is split in the radial direction for making two rings which are shaped to obtain a runway for the wheel.

Abstract: An approximately shaped or formed gear is fabricated in any desired way and is then corrected by means of substantially ring-shaped rolls or rolling tools performing striking or hammering operations in the tooth gaps of such gear. The rolls rotate in a planetary fashion in revolving rolling or roller heads. Such rolling heads are advanced to a maximum radial penetration depth of the rolls which is governed by a stop and are then retracted, if necessary. The advance or feed is preferably performed by a hydraulic drive, the pressure of which is regulated electro-hydraulically by means of a template or the like. The hydraulic drive acts against the action of a spring. The approximately formed teeth, which are thus rolled in an overlapping manner, are produced by the addition of material per tooth flank. Preferably, such material addition amounts to at least twice or three-fold the summation pitch error according to DIN 3960 to 3962 (German Industrial Standard 3960 to 3962).

Abstract: In a multi-stand stretch-reducing tube-rolling mill, the stands at the entry end forming a first group are driven from a main motor and an auxiliary motor and the remaining stands forming a second group are driven from the main motor and a separate auxiliary motor, the corresponding rotational speeds derived from the main motor and one or other of the auxiliary motors being added by means of a planetary gear in a summing transmission. A single stand between the two groups can be driven from the main motor only. The separate auxiliary motor at the entry end enables control over the tube elongation (or compression) to be effected over a shorter tube length, and thereby more accurately.

Abstract: Camber corrective adjustment tool having a rigid bar and opposed arms, one of which is fixed relative to the bar, and the other pivoted thereto in a manner to act as a fulcrum relative to the wheel mounting plate, for cooperation with a power unit to flex a trailing arm or McPherson strut suspension element against the weight of the vehicle to correspondingly vary the camber of the wheel coupled to the plate.

Abstract: An apparatus for carrying out the calibration of engines having a Bosch L-Jetronic electronic injection apparatus which is provided with an electronic control unit connected to a "lambda" probe inserted in the exhaust pipe for the closed loop control for carburetion includes a circuit for determining the difference between the value of a correction signal when the probe is switched into the circuit and the value of the correction signal when the probe is switched out of the circuit and a display device for providing a visual display of the difference.

Abstract: A three-wire digital atmospheric sampling system, particularly adapted to detect methane in mines, wherein accuracy is increased by ratiometric analog-to-digital conversion synchronized by a microprocessor. A reset signal, and read-out pulses indicative of the atmospheric condition, are transmitted along the same signal wire as are digital ratiometric signals, thus enabling the use of three conductors only between an atmospheric sampling probe, a microprocessor, and a visual read-out console.

Abstract: The apparatus for measuring the viscosity of liquids comprises an inclined viscosimetric tube (1) enclosing a ball (3). A device is provided for measuring the duration of fall of the ball (3) in the tube (1). An electromagnet (8) adjacent the tube (1) has poles (9) which set up along the tube (1) a gradient of a magnetic field allowing the automatic rising of the ball (3). The apparatus is used mainly for measuring the viscosity and the time of the coagulation of blood.

Abstract: The coagulometer for measuring the clotting time of liquids such as blood has a turning sample vessel whose axis of turning is at an angle to the vertical. Within the vessel an annular space is formed. The amount of liquid to be tested placed in the annular space is such that no complete ring stretching right the way round the axis of turning is formed when the vessel is not being turned or is being turned before clotting has started. When however clotting takes place sample liquid is transported up the sloping lower face of the annular space, such motion being sensed by a recording system.

Abstract: A combination manifold absolute pressure and ambient absolute pressure sensor utilizing a single absolute pressure sensor and a second sensor which is devised to sense the difference between the manifold pressure and atmospheric pressure. The second sensor is provided with a switch mechanism actuated by a diaphram at a preselected pressure difference between manifold pressure and atmospheric pressure. The actuation of the switch mechanism causes a sample-and-hold circuit to sense the instantaneous manifold absolute pressure at the time of actuation of the switch and electrically add the sensed manifold pressure to the set difference between the manifold pressure and atmospheric pressure to provide a signal indicative of ambient absolute pressure. This signal is utilized to provide altitude compensation in a fuel injection system.

Abstract: A weapon simulator for checking the removal of ammunition from a magazine at the rhythm or cadence with which the firing weapon is fired comprises two cams for feeding the cartridges and mounted upon a shaft driven by a drive motor. The shape of the cams is such that during the removal of the cartridges there occur the same accelerations and decelerations as during the removal of cartridges by means of a firing weapon during series firing.

Abstract: A method for detecting the depth of a liquid body. A source of pressurized gas is engaged to a weighted sensor by means of a single elongated tube. The sensor is positioned at the bottom of the liquid body. A solenoid valve, which regulates the flow of gas in the tube, is periodically opened to provide a pulse of overpressure which exits the underside of the sensor in a pressure-equalizing stream of bubbles. After a brief, predetermined settling time, a reliable pressure/depth indication is obtained from a transducer in communication with the single tube.

Abstract: The present invention is part of a liquid gaging system and comprises an apparatus for measuring and storing a value related to an unwetted capacitance of a capacitive sensor, the stored value being available for use in liquid measurements. Included is a capacitive sensor for mounting in a tank, the sensor having an unwetted capacitance variable in dependence on manufacturing tolerances. The sensor capacitance is also related to stray capacitance in the system. The invention further includes apparatus for measuring the sensor unwetted capacitance including the sensor capacitance contributed by the stray capacitance in the system. The apparatus for measuring is connected to the sensor. The invention also comprises apparatus for storing a value related to the sensor unwetted capacitance measured by the apparatus for measuring, the apparatus for storing being connected to the apparatus for measuring.

Abstract: A barometer of the evaporation or hypsometer type comprising an enclosed cylindrical bulb partially filled with a working fluid, a first temperature measuring device positioned in the bulb for measuring the temperature of the working fluid therein, a relatively thin extended tube connected to and extending upward from the bulb, a second temperature measuring device positioned on the tube at a position away from the bulb for measuring the temperature of the working fluid at that location, an electrical heater associated with the bulb for bringing the working fluid to the evaporation temperature, a mechanism for transmitting ambient pressure to the inside of the tube-bulb combination and preventing escape of working fluid connected to the upper end of the tube, electrical means connected to the heater for providing a heating current thereto, control means connected to the second temperature measuring device and the electrical means for controlling the level of heating current provided to the heater, and output

Abstract: Method and apparatus are disclosed for measuring the thickness of a workpiece by periodically transmitting ultrasonic pulses into the workpiece, receiving ultrasonic echo pulses reflected from the bottom surface of the workpiece, measuring the period of time elapsed from the time of transmission of each ultrasonic pulse to the time of reception of its related echo pulse by counting the number of clock pulses within the time period, counting each of such measured time periods by clock pulses, and deriving from each of such counted time periods and number of clock pulses within the time periods values a signal representing the thickness of the workpiece, wherein the measurement of the elapsed time period is effected with respect to a plurality of successive echo pulses, during which the phase of the clock pulses is caused to be shifted by a predetermined amount of 2 .pi.

Abstract: A probe is disclosed for the nondestructive inspection of the interior walls of cylindrical recesses, comprising an elongated shaft having an ultrasonic transducer mounted thereon a predetermined distance from the longitudinal axis of the shaft and oriented for directing the axis of radiation of ultrasonic energy emanating from the transducer outwardly in a plane perpendicular to the longitudinal axis of the shaft. In another embodiment, the probe comprises a shaft having a lateral extension whereon a first ultrasonic transducer is mounted at a predetermined distance from the longitudinal axis of the shaft and is oriented for directing the axis of radiation of ultrasonic energy emanating therefrom parallel to a line formed by the intersection of planes perpendicular to the longitudinal axes of the shaft and lateral extension.

Abstract: In an apparatus for receiving ultrasonic waves by optical means a laser beam illuminates a workpiece surface at which ultrasonic waves are manifest in the form of cyclically occurring surface deformations. The reflected light is transmitted to an optical interferometer as a measuring light beam and the beam exiting from the interferometer is converted to an electrical signal and amplified to provide a measuring beam responsive electrical signal. A portion of the laser beam immediately before being incident on the workpiece surface is also passed through the interferometer as a comparison beam. The exiting comparison beam light is converted to an electrical signal, amplified and time delayed to provide a comparison beam responsive electrical signal. By means of a subtracting circuit the comparison beam responsive electrical signal is subtracted from the measuring beam responsive electrical signal to provide a difference signal which is evaluated.

Abstract: A tubular body is closed at both ends by first and second plate-like members, respectively and a transducer for converting a deflection into an electric signal is provided between the first and second plate-like members. A through hole is made in at least one of the plate-like members and, on the outside of the plate-like member, a pressure receiving member is disposed. A pressure received by the pressure receiving member is transmitted to the transducer to deflect its moving part. When an overpressure larger than a measuring pressure is applied to the pressure receiving member to deflect it in excess of a predetermined value, the deflection is limited by one of the plate-like members to define a space between the plate-like member and the transducer, thereby to prevent the transducer from being affected by the overpressure received by the plate-like member.

Abstract: An electromagnetic flowmeter which includes a pair of electrodes molded of electrically-conductive synthetic plastic material disposed at diametrically-opposed points in a flow tube through which the fluid being metered passes to intercept a magnetic field, thereby inducing a voltage in the electrodes that is a function of flow rate. The inner wall of the tube is protectively covered by an insulating liner molded of a synthetic plastic material having an affinity for the electrode material and fused to the periphery thereof to define a monolithic conduit which is leak-proof.

Abstract: A fluid flow meter comprising a housing having a fluid inlet, a fluid outlet and defining an internal fluid chamber. A fluid passageway is formed in the housing for connecting the inlet with one end of the chamber while the outlet is open to the other end of the fluid chamber. The ends of the chamber are closed at the outlet end by an end cap and the other inlet end by a cartridge assembly which includes an end cap. Central to the housing fluid passageway and to the inlet end cap is attached to a rod having a conical metering portion. Attached to the metering rod is a freely centering piston assembly sealed nearest the outlet end by a flexible seal. An axial bore is formed through the piston and an orifice plate is detachably secured to the piston at near midpoint in the axial bore. One side of the plate is open to the inlet end while the other side of the plate is open to the outlet end of the chamber.

Abstract: A mechanism for reciprocating heavy loads such as pile drivers or pumping mechanism for deep wells in which the load to be reciprocated vertically is counter-balanced through a pair of swinging arms each of which has a pair of hair-pin type torsion springs and in which the arms are joined together through a linkage and connected to the load to be reciprocated to convert the arcuate swinging movement of the arms to vertical movement of the load.

Abstract: A self-energizing, positive engagement, fail safe mechanism for long stroke, well pumping units, whether powered mechanically or hydraulically, and which employ a lift belt. Upon failure of the sucker rod, polish rod or lift belt, a wedge shoe breaking arrangement drops and engages to jamb the lift belt against a stationary brake beam. Any continued movement of the belt only forces the safety wedge shoe brake arrangement into tighter engagement with the lift belt and brake beam. The lift belt is attached to the yoke supporting the polish rod by a bracket, dual clamping plate, bolt, and nail or pin assemblage. This same assemblage may be used to attach a counterweight to the lift belt.

Abstract: A multiple substantially identical countershaft (16, 16A), simple change gear transmission (10) having two-piece (20, 20A, 22, 22A) countershafts is provided. The use of two-piece countershafts allows the countershafts to be supported by three bearings (72, 74 and 76) while not requiring greater than normal manufacturing accuracy of the transmission housing (H). A driving connection between the front and rear countershaft portions is utilized which will allow a degree of axial misalignment between the front and rear portions and which when connected assures proper circumferential alignment of the countershaft gears.