Abstract: A valve metering system for spraying agricultural chemicals to the soil from a driver-operated moving vehicle through nozzles substantially independent of pump pressure. The system has a valve which is driver presetable prior to spraying. The valve is driver adjustable while the vehicle is moving for increasing or decreasing nozzle flow. Indicating means readable by the driver from the moving vehicle during spraying indicates spray rate through the nozzles as a percentage of pump flow.

Abstract: A liquid atomizer having only two housing sections, which can be forced into engagement, so that the prescribed distances within the segment forming the nozzle body are set semi automatically. In addition, at least one of the housing sections is equipped with a springy element, which, however, is designed integrally with the housing section. The springy element may be a weakened wall segment.

Abstract: A spraying device for dousing the blade chamber of a rotary lawn mower to effect cleaning thereof. An annular, D-shaped conduit is secured to the ground by a centrally disposed stake. The stake orients the flat portion of the D-shaped conduit against the ground, providing a low profile in order for the mower to be positioned over the spraying device. The annular conduit has a plurality of orifices disposed on the top surface defining first and second annular formations. The first annular formation upwardly directs a controlled spray pattern perpendicular to the ground, while the second annular formation upwardly and outwardly directs a controlled spray pattern preferably 45.degree. from the perpendicular. A valved extension conduit in communication with the annular conduit is releasably coupled to a water source such as a garden hose connected to a water faucet for supplying the spraying device with pressurized water.

Abstract: A nozzle including a tubular nozzle body forming a centrally located liquid flow path, the body having an inlet end and an outlet end. Mounted centrally in the body within the flow path is a pressure-regulating mechanism including an axially located dual-pressure baffle. The baffle is located at the outlet end and forms a nozzle gap with a throat surface of the body. During operation, a spring biases the baffle to close the gap and the liquid pressure on the baffle operates to open the gap. Adjustably mounted on the baffle is a shield which is movable relative to the baffle between a normal pressure position and a low pressure position. In the normal pressure position, the shield forms a gap size appropriate for a normal supply pressure. In the low pressure position, the shield forms a gap having an increased size appropriate for a supply pressure which is substantially less than the normal supply pressure.

Abstract: A nozzle mechanism (10) comprising a flexible barrel (13) annularly spaced about a fluid jetting tube (12) apertured as at (16) to a rear tubular portion (15), a manipulative sleeve (33) on the barrel (13), and a valve control member (24) to open and close its valve (28) aligned with aperture (16). Valve control member (24) includes a pin 29 operatively connected to the sleeve (33) via a slot (30) in barrel (13), so that manipulative motion of sleeve (33) opens and closes valve (28), as well as locking open valve (28) by reason of pin (29) being retained in a catch (31) on slot (30) in flexible barrel (13).

Abstract: An electromagnetic fuel injector for use in an internal combustion engine has a center pole piece with an axially extending bore which slidingly accepts an adjusting pin therein. The adjusting pin has a first end portion for engagement with the armature return spring of the injector. Axial translation of the adjusting pin, relative to the center pole piece will vary the compression on the spring, the seating load on the armature valve and, as such, the dynamic flow characteristic of the injector. The adjusting pin further has means for engaging the center pole piece to rotate the piece which is threadingly engaged within the injector housing. Rotation of the threaded piece relative to the housing varies the armature/valve travel and, as such, the static flow characteristic of the injector.

Abstract: A concrete reclaimer includes a concrete processor having a rotating inclined screen and a pipe discharging water. Fresh concrete being disposed is poured into an open end of the rotating screen, and migrates toward the opposite open end. The concrete passes over a fine mesh and then a coarse mesh screen, washing out cement slurry when passing over the former, and removing sand when passing over the latter. Gravel is discharged from the remaining screen open end. Specially configured nozzles are arranged in a particular pattern along the pipe. Collection and storage pits are provided for the resultant segregated cement slurry, sand, and gravel. In a preferred embodiment, a concrete processor includes a five horsepower pump and a ten horsepower screen rotation motor.

Abstract: An apparatus and method for reclaiming fiber reinforcement material from cured SMC waste products provides a series of roller mill pairs having a differential speed capacity between paired rollers. The rollers impart a shearing and crushing force to the material which breaks the bond between the reinforcement fiber filaments and the resin binder while preserving the structural integrity of the filaments.

Abstract: A gyratory crusher includes a bowl assembly with a concave crushing surface and a crusher head of conical shape which extends into the concave portion of the bowl assembly. A central crusher axis extends centrally through the bowl assembly. The crusher head is mounted with a central head axis at an angular deviation with respect to the central crusher axis to intersect the crusher axis at an apex. Crushing action is obtained by driving the crusher head to gyrate the angular offset of its central axis about the central crusher axis. The gyratory crusher has an adjustable stroke of gyration. Adjustability of the stroke is obtained by controllably varying the amount of angular deviation by which the crusher head gyrates about the central crusher axis.

Abstract: A food grater is disclosed comprising an inverted V-shaped freestanding frame defined by first and second panel members (4,6) pivotally joined at upper ends. The panels fold into a parallel orientation for storage and expand into a freestanding orientation for use. Outwardly directed food grating means (22) in at least one of the panels is provided to grate food passed thereover, and apertures (20) communicate with the grating means (22) to pass grated food segments to an inside surface of the panel. A transparent collection container (44) attaches to the inside surface of the panel and serves to collect the fragmented food and display its quantity to the user. The grating means (22) comprises cutting elements having a U-shaped cutting edge, comprising spaced apart first and second parallel and linear leading edges (28), and a trailing cut-off edge (32) at a rearward end for cutting off the food fragment.

Abstract: The invention relates to a method of operating a stirring ball mill which has a preferably cylindrical, rotating barrel provided with an inlet at one end and an outlet at the other end, in which a stirring shaft provided with stirring means rotates. This method includes operating the mill at supercritical rotatory speed with a degree of fill of at least 25%, while the balls are retained in the mill. In this manner a great throughput is achieved and a narrow grain size range, without requiring a great amount of space.

Abstract: The invention relates to a roll mill, particularly a material bed roller mill for the comminution of brittle material for grinding, with two grinding rolls which are driven so that they rotate in opposite directions and are pressed against one another at high pressure, each of these grinding rolls having a roll shell of wear-resistant chill cast material with a surface profile. So that the rolls have a particularly good nip capacity and a high wear resistance, profiles in the form of weld beads of wear-resistant deposit welding material are applied to the surface of the chill cast roll shell.

Abstract: A cable dispensing apparatus for dispensing a length of cable from a payout reel to a take-up reel. The cable dispensing apparatus has a transfer system which both lifts and moves the payout reel to a predetermined distance from the operator without requiring the operator to travel between the front and backside of the cable dispensing apparatus. The apparatus is equipped such that the operator can remain between the cable dispensing apparatus and a cable cutting apparatus which collects the cable onto the take-up reel. The cable dispensing apparatus positions the payout reel at the predetermined distance such that the free end of the cable is within arm's length of the operator. The cable dispensing apparatus includes a frame from which a pair of support arms extend rearwardly in a direction opposite the operator.

Abstract: In winding machine for material webs (4), particularly paper or cardboard webs, it is known to provide devices for severing the material web (4) on the bearing or support cylinder (1), which have a cutting element applicable to the web (4) in a wrapped area of the bearing or support cylinder (1) and movable across the running direction of the web.In order to achieve through a simple construction a safe severing of the web (4) during roll exchange, according to the invention a freely rotatably supported wheel (19) having a sharp peripheral edge which can be resiliently pressed against the bearing or support cylinder (1) is used as a cutting element.

Abstract: An apparatus and method is provided for processing and rewinding a web made of easily stretchably deformable plastic film. The web is drawn from a supply roll assembly by a series of synchronously, positively driven draw and transfer rolls and directly delivered to a rewind spindle. The rewind spindle is positively driven at a speed greater than the speed imparted to the web by the draw and transfer rolls. However, the rewind spindle is in peripheral contact with a transfer drum which is the last of the series of draw and transfer rolls so that the processed web is immediately transferred from the transfer drum to the rewind spindle. The transfer drum exerts a drag on the rewind spindle to control and match the speed of the rewind spindle to the speed of the moving web.

Abstract: The device for feeding reels into a packaging machine comprises a buffer magazine for the reels. The reels are advanced one after the other along the magazine by a conveyor belt provided with pairs of uniformly spaced teeth for supporting individual reels. A distribution element, comprising a supporting element and a resiliently urged tape, guides a first one of the reels into a removal position, and a transfer device transfers the reels sequentially from the removal position, through a reel guiding channel, to an underlying receiving position, at which a device operates for changing the reel to be unrolled in the packaging machine.

Abstract: A clamping mechanism for releaseably securing the end of a rope to a winch drum. The winch drum includes first and second walls that are spaced apart in facing relation to each other to define therebetween a rope end receiving space having open front and rear ends. One of the walls in the space is contactable by the rope end that is to be secured to said winch drum. A clamping wedge member has an axis, a drum side contactable with the other of the winch drum walls, a rope side contactable with the rope end, and a drive end to which a first axial force can be applied. Application of the first axial force moves the wedge member axially into the space and causes a first lateral clamping force be applied, initially clamping the rope end against the one wall. A transverse thrust device is mounted on the drum for applying a transverse force against the drum side of the wedge member transversely of the wedge axis to cause a second lateral clamping force to be exerted against the rope end.

Abstract: A thread clamping device for a textile machine includes a clamping pad which is pressed against a clamping rib by a compression spring. The spring force can be adjusted, independent of other like devices associated with the machine, by an adjusting mechanism including a slider with an inclined surface supporting one end of the spring, wherein movement of the slider alters the precompression of the spring. The clamp is normally held open by a cam which overrides the spring, but when thread tension falls below an adjustable threshold, a tension monitor automatically activates the clamp.

Abstract: A stopper apparatus for a spinning reel has a first stopper mechanism for stopping a rotary frame in a fixed phase, a second stopper mechanism for stopping the rotary frame in a plurality of phases, and a stopper switching mechanism for switching the first and second stopper mechanisms. The first stopper mechanism includes a first pawl, and a tooth formed on a rotary element rotatably mounted on a spool shaft. The second stopper mechanism includes a second pawl, and teeth formed on an inner peripheral wall of the rotary frame. The stopper switching mechanism includes a cam plate disposed between and engageable with the first pawl and second pawl and attached to a forward end of a shaft rotatable by a control knob. The cam plate is rotatable between a first position to operate only the first stopper mechanism, a second position to operate at least the second stopper mechanism, and a third position to render the first and second stopper mechanisms inoperative.

Abstract: A method of winding a long sheet continuously around the plate bobbin comprises the steps of repeatedly moving in one direction on an approximately circular locus a rotary shaft for winding, rotating the plate bobbin, repeating on a certain moving locus, repeatedly moving in the same direction or reciprocatingly the rotary shaft of the nip roll so that a nip roll disposed in an approximately parallel to the rotary shaft of the plate bobbin continuously move in one direction along the surface of the plate bobbin rotating from above the above described long sheet, depressing the long sheet against the above described plate bobbin so as to continuously wind it, thereby to wind a long sheet around a plate bobbin with better accuracy, higher speed without the air swallowing operation.

Abstract: A laying head for forming axially moving elongated products into series of rings. The laying head includes an auxiliary guide which is readily dismantled from the laying head in order to accommodate the rolling of larger diameter slower speed products. The guide includes the provision of a helical extension of the guide path defined by the rotating three-dimensionally curved pipe of the laying head. The helical extension is subdivided into an outer cylindrical shroud surrounding the rotational path of the outlet end of the laying pipe, and an inner helical trough having its open side facing the shroud. The helical trough includes a central hub adapted to be detachably secured to the tubular pipe support carrying the laying pipe. The central hub and the tubular pipe support include coacting surfaces which insure that the components are reliably assembled for balanced rotation.

Abstract: A shaft on which a restraint belt is wound is rotatably mounted in the side walls of a U-shaped frame. A driving hub mounted on the shaft drives a locking hub through a clutch formed of ball bearings mounted in recesses in the faces of the hubs. Belt payout rotation of the shaft at a predetermined acceleration will cause the locking hub to rotationally lag. This causes the locking hub to move axially and further causes locking teeth on said locking hub to engage holes in the sidewall of the frame. This prevents further rotation until the belt extension load on the belt is removed.

Abstract: A spinning reel has a reel body having a projection portion, a rotary frame, a bail arm and a toggle urge mechanism for switching over, via a drive arm, the bail arm between a fishing-line releasing position to a fishing-line retrieving position. Either a contacted portion of the drive arm to be contacted by the projection portion or this projection portion is projectable and retractable through contact with the other and is urged in a projecting direction by a projection urging mechanism. The projection urging mechanism has a push-out urging force equal to or substantially equal to a push-in force applied thereto by either the contacted portion or the projection portion in association with the rotary movement of the rotary frame in the line retrieving direction.

Abstract: Bird droppings on the propellers and tail sections of parked aircraft are substantially prevented by mounting the present apparatus on the horizontal surfaces thereof which normally present suitable bird perches, the present apparatus having one or more upwardly extending peaked portions which provide no approximately horizontal perchable surface to birds, thereby substantially eliminating accumulation of bird droppings on the supporting structural components of the aircraft.

Abstract: The invention is a propulsion system for powering an aircraft in both vertical and horizontal flight modes. In detail, the invention includes first and second gas-driven ducted lift fans mounted in the aircraft for providing thrust in the vertical flight mode. First and second shaft-driven ducted cruise fans that have inlet ducts and bypass air ducts that are mounted in the aircraft for providing thrust in the horizontal flight mode and supercharged air for the engines in all flight modes. First and second gas transfer ducts couple the bypass air ducts of the first and second ducted cruise fans to the first and second turbo compressors, respectively. First and second shaft-driven turbo compressors are mounted in the first and second gas transfer ducts, respectively. First and second high-pressure feed ducts couple the first and second shaft-driven turbo compressors to the first and second ducted lift fans, respectively.

Abstract: A segmented variable sweep wing for an aircraft has a plurality of wing segments. A structural device movably affixes the wing segments to the fuselage of the aircraft adjacent each other at their root areas. The structural device moves the segments conjointly to a power position where the segments are perpendicular to the fuselage and spaced from each other. The structural device also moves the segments conjointly to a cruise position wherein the segments are swept back at an angle with the fuselage and in abutment with each other thereby forming a unitary continuous surface airfoil.

Abstract: The door sill of a cargo loading and unloading opening in an aircraft body is protected against damage by a cover plate that is hinged to the loading floor alongside the door opening to be tiltable outwardly to cover the sill when in the operative position. The outwardly pointing edge of the cover plate is supported by a support linkage, including a support link or section and a tie rod or bracing link, which are pivoted to the cover plate and to each other, so that the plate and its support linkage may be tilted into a recessed position in which the plate with its support linkage extends substantially in parallel and close to the door or gate that closes the cargo opening, thereby using very little space in the stowed condition.

Abstract: A smoke evacuation nozzle for an airplane having minimum diameter at the fuselage pressure hull exit for minimum structural integrity disruption. The nozzle is a converging-diverging nozzle which maintains sonic flow down to a very low altitude, thereby obtaining maximum airflow through it at all times. The throat is located at the point where the nozzle goes through the fuselage pressure hull so that the penetration through the fuselage pressure hull is minimal.

Abstract: A satellite embodying at least one surface intended mainly for exposure to solar radiation and extending away from the satellite in a predetermined direction (Y), an on-board computer having connected thereto an attitude sensing system, an orbit control system for imparting thrust to the satellite along predetermined axes, and an attitude control system. The satellite further embodies a device for controlling the tilt of the surface in parallel with a plurality of planes containing the predetermined direction; and, therefore, particularly in parallel with the plane of a solar panel forming the surface. The tilt control device is controlled by the on-board computer. The tilting can generate a moment of pitch or relocate the center of gravity onto the axis of the orbit control system.

Abstract: This apparatus relates to a safety mechanism for a rail system having tracks adapted to be moved in an out of alignment for the transfer of an object from one track to the other. More specifically, the apparatus relates to a mechanism which prevents the accidental movement of an object off the end of one track unless the tracks are in substantial alignment.

Abstract: A railbound manganese frog assembly having ramps and grooves adapted to receive the false flange formed on the rim of a worn railroad car wheel to prevent the flange from impacting components of the frog assembly.

Abstract: A reflex fastener, specifically a snap consisting of a plug and corresponding socket, is disclosed for use in load-bearing structures (preferably, stands to support electronic keyboards). The plug is bevelled to form depressions into which corresponding engagement ridges in the socket will be seated when the structure is fully assembled. The plug and socket are also sloped or curved at corresponding angles which enhance the stability of the assembled structure. Ease of assembly and disassembly is enhanced without loss of stability by constructing the fastener by blow-molding a rigid, flexible material.A keyboard stand of unique appearance and stability which incorporates the inventive fastener is also disclosed.

Abstract: A mounting device is described which includes a channel having a top and spaced-apart sides. Registering openings are present in the sides. A key having elongated prongs is slidably received in the openings. The mounting device is useful in mounting a variety of objects (e.g., a fishing rod holder) to a desired substrate (e.g., a cleat, a rail, a block, etc.).

Abstract: A corner brace which can support an inner cabinet shelf during shipping of the cabinet, and serves to secure a cabinet top in place, is disclosed. The brace is comprised of an angle member having a pair of arm members oriented substantially perpendicularly to one another. The arm members have a flat planar top edge portion oriented substantially parallel with one another. A shelf member interconnects each of the arm member front portions at a position spaced beneath the arm member top edge portions, the shelf member having a bottom portion and a flat planar top portion oriented parallel with the arm member top edge portions. The shelf member has an outer edge portion interconnecting the arm members, and also has an opening formed therein between the top portion and the bottom portion. An elongate reinforcing rib member is connected to the shelf member bottom portion adjacent the outer edge portion, the rib member interconnecting and extending continuously between the arm members.

Abstract: A C-clamp for mounting stage accessories has four angled body portions, with one body portion being bent to provide a first acute angle .phi. between the first and second body portions, and a second acute angle .theta. between the second and third body portions, and an approximately right angle .alpha. between the third and fourth body portions. The C-clamp has threaded holes in the first body portion and in the fourth body portion, respectively. The first acute angle is greater than the second acute angle. A tightening bolt in the first threaded hole is positioned to compress a pipe against the second and third body portions. Consequently, the tightening bolt can securely fasten the clamp onto support pipes of various sizes. A mounting bolt is inserted into the second threaded hole either to fasten the C-clamp to a support structure such as a ceiling joist so that the clamp can be used to support a pipe, or to fasten a stage accessory such as a flood light, spot projector or curtain to a pipe.

Abstract: A mounting plate for an attachment with an insertable plug type tubular connector and a process for making the plate. The mounting plate comprises a sheet metal plate having length, width and body thickness T with a tubular nipple member projecting from one side. The nipple member is cold formed plastically from the body of the plate by a stamping process utilizing a progressive die. One of the intermediate die members is shaped such that it produces a tubular preform having a distal end portion with a wall thickness greater than the wall thickness of the opposite end portion adjacent to the plate. A subsequent die member reduces the excess wall thickness and extends the tubular member to an axial length equivalent to at least 3T measured from the distal end of the neck member to the surface on the opposite side of said plate. Subsequently, another die member precisely finishes a feature located in close proximity to the nipple member.

Abstract: A holder apparatus includes a semi-cylindrical housing mounting respective first and second semi-cylindrical doors relative thereto. The housing includes first and second side walls, with each respective side wall including a respective slot medially and orthogonally intersecting the side wall, with each side wall having a door pivotally mounted thereto, with the door of a semi-cylindrical configuration and the door having a leg received within an associated slot. Each door includes a hinge, the hinge having a hinge axle having a projection projecting below a respective door, with each axle having a lug projecting below a respective door for mounting upon a grooved support plate to maintain the door in respective open and closed configuration relative to the semi-cylindrical housing.

Abstract: A clipboard includes a backing board on which a clip member is mounted pivotally, a torsional spring unit arranged between the backing board and the clip member so as to bias one end of the clip member to abut against the backing board, and a whistle formed integrally with the clip member.

Abstract: A device in fluid-conducting unit for use in a supply line for carrying fluid with pressure from a source of the fluid to a tool comprises a coupling member having first and second open ends and a fluid passageway extending between the open ends. The fluid passageway has inner walls defining first and second sections with the second section having a larger diameter than the first section.

Abstract: The supply fitting for gas cylinder valves, particularly of acetylene cylinders, consists of a housing provided with a supply inlet and a portion for engaging and retaining a gas cylinder vlave, which portion is formed with a supply outlet, a piston sleeve, which is movably mounted and sealed in the housing and displaceable against the force of a spring and comprises a valve member, which is formed with a through passage and is biased by a spring to its sealing position and is adapted to open a supply passage through the housing after the supply fitting has been attached to a gas cylinder valve, and means for holding the piston sleeve in position before and after the supply fitting has been attached to a gas cylinder valve. In a preferred embodiment the means for holding the piston sleeve in position comprise an eccentric actuating mechanism with associated detent means for preventing an inadvertent adjustment. The supply fitting can reliably and safely be handled also by unskilled persons.

Abstract: The present invention provides a control valve with an improved closing function that functions over a long period of time and the flow rate control can be carried out over a wide range.A valve body (1) is provided inside thereof with a partition (4) separating an inlet passage (2) and an outlet passage (3). The partition (4) is provided with an opening portion (5) communicating the inlet passage (2) and the outlet passage (3).A shutoff valve (10) is disposed opposite the opening portion (5). The diameter of the opening portion (5) is increased and curves toward the side of the shutoff valve (10).A control plug (12) is arranged on and projected from the lower end of the shutoff valve (10); said control plug being located on the large diameter side of the opening portion (5), is coaxial with the opening portion (5), and has a flange portion (12a) defining an orifice (14) between the inner surface of the opening portion (5) and the flange portion.

Abstract: A tapered plug valve comprising a tapered plug rotatably mounted within a bore in a valve body to intercept a passageway. Spacing means is provided to limit the amount of axial movement of the plug and biassing e.g. spring means is provided to apply an axial force to the plug.

Abstract: A gate valve adapted for stem back seating has a stem and bonnet assembly with a rotatable bearing ring to which the stem is releasably fixed during normal gate opening and closing operations. During back seating, the stem is released from the bearing ring and the bearing ring is fixed to the bonnet cap, enabling low torque back seating by rotation of the stem relative to the bearing ring and bonnet cap.

Abstract: An improved scissors jack which has a lead screw that does not extend beyond the confines of the jack when the jack is in the partially raised position so as to reduce the space required for storing the jack. A hollow member is formed with a slot in which the extension of the threaded screw is received so that the end of the screw can slide in the slot when the jack is in the unloaded position to allow the jack to be raised to a mid height condition for storage. Under use, the extending portion of the screw moves to the end of the slot in the hollow member so as to apply tension to the lead screw to thus raise and lower the jack as the lead screw is rotated.A modified form of the invention utilizes an extended hollow trunion which prevents the end of the lead screw from extending beyond the confines of the trunion and a further modification provides for pivotally connecting two portions of the lead screw so that the jack can be moved to a stored condition.

Abstract: The handrail assembly includes at least one tubular metal stanchion having a base and at least one aperture through both sides of the stanchion and at least a horizontal top rail extending through the stanchion aperture. The horizontal top rail has an inner metal pipe, an outer plastic pipe, and at least one aperture through both sides of the rail for receiving a metal retaining rod. Following insertion of the horizontal top rail into the stanchion aperture, the apertures of the top horizontal rail are vertically oriented so that they are aligned with the tubular metal stanchion. Following alignment of the top horizontal rail apertures, the retaining rod is fitted into the apertures. In one embodiment, the retaining rod rests in a receiving cup located on the base of the stanchion. In an alternative embodiment, the retaining rod has an end plate affixed to it where the end plate is sized to be about the interior diameter of the tubular metal stanchion.

Abstract: A bottom pour casting apparatus (100) includes a vessel (114) having a bottom nozzle (118). A stopper rod (112) is coupled to a programmable controller (250) by linkage mechanism (250) for controlling the movement of the stopper rod (112) according to a pouring schedule. An LDT position sensor (216) is coupled to the stopper rod (112) by a cable (238) and also electronically to the controller (250) for sensing the actual position of the stopper rod during a pouring cycle and conveying this information directly to the controller (250) thereby bypassing any backlash present in the linkage mechanism (116) to enable precise control of the stopper rod movement. A method includes rezeroing the position sensor (116) at the beginning of each pouring cycle to account for slag build-up on the nozzle (118).

Abstract: A method for deburring especially a steel strip (1) cut into slabs (1a) with the aid of an oxygen cutting torch (18) whose blast is perpendicular to one (2) of the principal faces of the strip (1). The method consists in directing, onto the principal face (3) of the strip (1) opposite the principal face (2) receiving the blast from the oxygen cutting torch (18) and in the zone for cutting up the strip (1), a blast of fluid which is inert with respect to the blast from the torch (18).

Abstract: The present invention pertains to a gas purging plug for metallurgical vessels with a gas connection pipe at the gas inlet-side, lower end.

Abstract: A vibration isolator has four fluid filled variable volume load bearing chambers, with two arranged on one side of a core and the other two on the other side. The core and chambers are contained within a frame, with the chambers extending between the core and the frame, so that vibrating the core axially compresses or extends the chambers. Diagonally opposite pairs of chambers are each connected with a separate fluid track, and the two fluid tracks may be tuned to have different resonant frequencies or the same resonant frequency. The chambers are defined by elastomeric bodies which may be reinforced using a tubular shaped reinforcing element adjacent to the chamber, to help contain the pressures within the chamber without materially increasing the compression strength of the elastomeric bodies.

Abstract: A vacuum-operated clamp is provided, the clamp comprising a vacuum cylinder composed of a cylinder body, a cylinder piston having a piston rod and a resilient and sealing piston head or O-rings, a single pair of toothed jaws which are mounted on the piston rod and on the cylinder body, and a control valve mounted in the end of the cylinder body, whereby the stroke and the clamping force of the clamp may be controlled. The clamp body may be fabricated of plastic or metal. The clamp may further include a finger hole in one jaw in order to aid in operating the clamp. The vacuum-operated clamp disclosed requires no external source of vacuum.