Abstract: A door drive of a up and over door, sectional side or sectional ceiling door or sliding door, especially of a garage door, comprises at least one cylindrical guide tube supported against a ceiling or side wall, has a slide carriage arranged for movement along the guide tube, an endless traction element and a drive for opening and closing the door. The carriage is connectable with the door panel via a connecting rod. The ends of the traction element are secured together by means of a turnbuckle. For better support of the guide tube and for sampler connection or coupling of the traction element with the slide carriage, a number of mounting brackets are secured to the upper side of each guide tube for receiving support struts for mounting in the guide tube to the garage ceiling or wall. The slide carriage slides with a tubular portion along the guide tube. It has a continuous longitudinal slit on its upper side so that it can pass the brackets.

Abstract: In a system for providing access to a diesel engine of a locomotive, a hatch lifting mechanism is pinned to a hatch for enhancing the capabilities of pushing and pulling the hatch during its opening and closing operation. The hatch lifting mechanism allows the hatch to be set open at any desired position, using a positive rigid support at the desired position. The system further includes a two-force member comprising a collar, an ACME threaded rod, and a plunger situated inside a pipe, with minimal bending exerted on the hatch. Placing all of the moving elements inside the pipe enables the mechanism to operate in a hostile environment and in a confined space. The design of the hatch lifting mechanism of the present invention also prevents a lock-tight phenomenon between the collar and the plunger when the rod is fully extended out of the pipe.

Abstract: A power window device in which a drive pulley around which a wire to open and close a window is wound is disposed within a case of a power window drive section and a wire guide for guiding the wire is mounted on the case. The wire guide is composed of a first wire guide for guiding one end of the wire and a second wire guide for guiding the other end of the wire. The second wire guide is removably coupled to the first wire guide. A wire guide angle .theta..sub.0 between the wire guides can be changed merely by exchanging the second wire guide. Even when a different wire guide angle is required, the size of the component to be replaced can be reduced, as can the cost to manufacture.

Abstract: A door, and particularly a door for a vehicle, which door can be made to pivot about two separate axis. The door is provided with first and second sets of hinge assemblies comprising releasable hinge pins and seating receptacles for lodging the hinge pins. Each set of hinge pins define one axis. Release of one set of hinge pins causes the door to be pivotable about the axis of the other set of hinge pins.

Abstract: A security gate for children having a pair of gate sections that slide relative to each other to vary the effective width of the gate. The sections carry bumpers on their outer vertical side rails, and the bumpers on one side rail are extendable so that they force the bumpers to frictionally engage the sides of an opening to be closed by the gate. Independent of the bumpers brackets are provided on the vertical outer side rails and the sides of the opening to position the gate in the opening and resist the gate from being pushed out of the opening. The gate may be permanently mounted in the opening by hinges or may be removable from the opening.

Abstract: A roof-side weather strip is provided to be attached along a front pillar of a motor vehicle. The weather strip has a base portion adapted to be engaged with the front pillar, and a tubular sealing portion projecting from a front end part of the base portion for closing a gap between the front pillar and a front end edge of the door frame. A rib-shaped projection is formed integrally with a bottom of the tubular sealing portion so as to project within the tubular sealing portion. In the lower end portion of the roof-side weather strip, the seal wall of the sealing portion is bonded to a top end of the rib-shaped projection so that the seal wall has a reduced height relative to that of the remaining portions thereof, and has a configuration conforming to the approaching track of the front end edge of the door frame when a door of the vehicle is closed.

Abstract: A magnetic header seal assembly for an automotive vehicle header comprises a first sealing element mounted to the vehicle door frame having a compressible body portion with an integrally attached magnetic element and a second complementary sealing element mounted on the vehicle door flange. The first and second sealing elements cooperate to form a seal along both the window panel and the header line of the vehicle.

Abstract: A mounting panel is provided for mounting a window and a window regulator in a vehicle door. The mounting panel is comprised of a one-piece plastic molded member having a central planar mounting member adapted to mount the window regulator, and a plurality of spaced apart spokes molded integrally with the center drill plate and radiating generally forward and rearward therefrom to mount the guide channel receiving the edges of the window. The window guide channels are preferably integrally molded with the radiating spokes. The spokes are hollow tubular members of generally circular cross-section. The molded plastic mounting panel also has a plurality of integrally molded arm rest supports which project laterally therefrom and are adapted to support an arm rest structure of the vehicle door. The plurality of apertured mounting brackets are molded integral with the spokes for receiving fasteners by which the mounting panel is mounted on the vehicle door.

Abstract: An abrasive flow machining and polishing apparatus is provided having a hydraulically actuated reciprocating piston (42) and a extrusion medium chamber (10) adapted to receive and extrude a visco-elastic dispersion of an abrasive unidirectionally across the internal surfaces of a workpiece (40) having internal passages (41) formed therein to perform abrasive work on said surfaces. A fixture (24) directs flow of the viscoelastic abrasive dispersion from said hydraulic extrusion medium chamber (10) into the inlet of internal passages (41) in a workpiece (40), while a collector (30) is set to gravitrimetrically collect flow of the viscoelastic abrasive dispersion as it extrudes from an outlet of the internal passages and drops into the collector. The extrusion medium chamber (10) is provided with an access port (16) to periodically receive gravimetric return flow of the viscoelastic abrasive dispersion from the collector (30) into extrusion medium chamber (10).

Abstract: An apparatus for successively grinding the edges of a series of like, sheetlike articles, such as glass sheets, and especially irregularly shaped glass articles such as automotive windows. The apparatus includes a frame, a table rotatably secured to the frame, a clamp for clamping an article on the table, and a template of the article carried by the table, but at an elevation below that of the article. The apparatus also has a swing arm assembly which carries a spindle near its outer free end, an inner end of the swing arm assembly being pivotally secured to the frame, the swing arm assembly being movable in a plane to move the spindle toward or away from the table. The spindle of the swing arm assembly has a rotatable grinding wheel which is positioned to engage the edge of an article on the table and a motor drive for rotating the grinding wheel. The spindle further has a cam follower which is positioned to engage the edge of the template when the grinding wheel engages the article.

Abstract: A polishing apparatus (10) comprises a main arm (12) mounted for horizontal and vertical movement. The arm (12) is provided with a rotating belt (32) of abrasive material for polishing purposes. An article to be polished, for example a dished end is mounted on a table drive (24). The arm (12) carries an X-Y plate (28) including a contact wheel (30) movable relative to the arm (12) along two orthogonal axes. Cylinders (38, 40) bias the contact wheel toward the article to be polished. In use, the arm (12) is swept across the radius of the dished end so as to "map" the profile to be polished and thereafter the arm (12) follows this profile at a preset "off-set" of 50-75 millimeters. Minor irregularities of the surface are "ridden" by the X-Y plate (28) against the constant bias of the pneumatic cylinder without being ground away.

Abstract: An automatic drill loader is used with a drill grinding machine to automatically present drills to the drill grinding machine workhead for being ground thereat and to carry ground drills to a storage receptacle. The automatic drill loader comprises a magazine, a timing station, and two sets of grippers. The magazine stores a quantity of drills, which may have stepped shanks. The magazine is adjustable to suit drills of different lengths and diameters. The magazine presents one drill at a time to a staging station. A load gripper grips the drill at the staging station and conveys it to the timing station, whereat the drill is linearly and angularly oriented. The load gripper then transports the drill to the drill grinding machine workhead. Simultaneously, an unload gripper carries a ground drill from the drill grinding machine workhead to the storage receptacle.

Abstract: During polishing of a gemstone (30, 100, 200), a coolant is passed in heat exchange relationship with the gemstone to remove heat. This reduces the risk of temperature degradation of the gemstone. In practice, this can be achieved by passing a fluent coolant through a coolant chamber (34, 124, 214) which forms part of the apparatus that is used to hold the gemstone during polishing and which is in heat exchange relationship with the gemstone held by the apparatus.

Abstract: The invention relates to an improved method and apparatus for particle blasting utilizing crystalline ice. A theory of impact erosion is presented, as opposed to conventional abrasive techniques, which allows for the development of ice blast conditions to achieve a maximum efficiency for surface cleaning and coating removal applications. By impacting a surface with ice particles which have been treated to bring their temperature near the melting point of ice, erosion is effected by a rupture process caused by the well known reaction-force. It has been found that warming of the ice particles can be realized by simply utilizing unconditioned blast air taken directly form a high pressure compressor.

Abstract: An abrasive sheet such as sandpaper has standard dimensions to fit 1/3, 1/2 or 1/4 sheet sanding machines having dust extraction facilities. The sheet has perforated delineated separable or frangible areas adapted to be removed by the user to form one pattern of an array of patterns of holes in the sheet to correspond with the holes in the sole plate of the particular model of abrading or sanding machine which the user is employing. This enables one sheet to be used with several different models. Such an arrangement also ensures that the unperforated portions of the sole plate of the abrading machine are covered by unseparated frangible areas of the abrasive sheet. This is accomplished by defining the frangible areas using circular configurations of perforations.

Abstract: A system for abrasively cleaning surfaces such as by sandblasting and including a vacuum arrangement for recovering the material abrasively removed from the surface as well as the abrasive material is provided with a control circuit operable to actuate an alarm and/or deactivate the abrasive cleaning operation by sensing a drop in the vacuum pressure at the blast head which is indicative of an inappropriate positioning of the blast head and thus discharge of the abrasively removed material and abrasive material to the surrounding environment.

Abstract: A portable containment structure for abrasive blasting equipment is designed for particular application in the cleaning of large storage tanks and for bridges. The unit includes a portable blasting room which fully encloses the blasting apparatus and operating personnel, in a secure environment having ventilating and vacuum means for the safe removal and containment of particulate materials and contaminates. The unit is supported by cables and includes rigging which provides for both horizontal and vertical movement along the surface being treated.

Abstract: A plastic water-conveying elongate enclosure for confining admitted groundwater adjacent the wall-floor joint around the inner periphery of a basement or other subterranean room. The invention relates to a novel undersurface of the enclosure comprising spaced longitudinal dovetailed or flanged ribs and grooves which provide improved receptivity, distribution and retention of bonding adhesive, used to bond the enclosure to the floor.

Abstract: A roof apparatus includes a plurality of light collecting members, each having a pair of left and right vertical members, an upper horizontal member, a lower horizontal member, and a transparent plate. The upper horizontal members are disposed at a ridge side end of the vertical members, the lower horizontal members are disposed at an eaves side end of the vertical members, and the transparent plate is disposed on the inner periphery of the vertical members, the upper horizontal member, and the lower horizontal member. The light collecting members are connected in a slope direction of the roof, and the lower horizontal member has a transparent plate holding piece, a transparent plate contact wall, and a cover piece. The transparent plate holding piece is adapted to hold an eaves side end of the transparent plate. The transparent plate contact wall has a thickness which is smaller than the thickness of the transparent plate.

Abstract: A partition of the type commonly used in bathroom facilities. The partition is constructed of one or more panels having a construction which permits the use of a high percentage of recycled materials. The panels include a plurality of slats each having a elongated narrow construction which allows the slats to be formed by the process of pultrusion. This permits use of a high percentage of recycled materials. The slats and other components are designed such that the slats are maintained in alignment and held securely in place in the assembled state.

Abstract: A footing block system is provided for the foundation of a structure and includes a pair of elongated longitudinally extending opposed shells which define a cavity between them for the reception of concrete in slurry form. Each of the shells includes an upright portion having a base adapted to engage the subsurface and an integral transverse portion extending to a rim, the rims of the first and second shells being spaced apart and facing one another. Bridge members are engageable with the opposed shells for joining them a fixed distance apart, mutually interlocking members being provided on the shells and on the bridge members for slidable reception in a longitudinal direction while preventing substantial movement therebetween in a transverse direction. Wall forms are engageable with and supported on the transverse portions of the shells and define a second cavity for the reception of concrete in slurry form, the first and second cavities being in mutual communication.

Abstract: A glass construction block comprising a plurality of glass members, each of which has a front wall, a rear wall and a plurality of side walls. A frame surrounds the glass members and is secured to the glass members spacing the glass members apart from each other while holding the glass members in a static position. The frame defines a channel member with side walls which extend inward from the outer side edge of the glass members terminating in a bottom wall and has flange portions which extend outward and are secured to the side walls. The blocks are assembled as a wall system by fitting a positive rib placed into the channel member into the channel member of an adjacent block. The two are adjoined with a void between the edges of the blocks which is then filled with a sealant.

Abstract: A laminated construction board comprising a kraft board support backing adhesively bonded to a foam insulating panel is disclosed. Also shown is an improved method for attaching laminated construction boards with fasteners. The fasteners are driven through the foam panel, until the retaining portion thereof engages the support backing, securing it in abutting relationship with an underlying wall substructure. The insulated surface of the board may be covered with various surface finishes, and is especially suited for use with acrylic mortar systems. Also disclosed is a building structure, a method of constructing a building structure, a wall surfacing system, and a method of constructing a wall sheathing, all utilizing construction boards attached to a substructure with staples wherein the crown of the staple engages the support backing of the construction board.

Abstract: A bracket for use in the after market of metal clad buildings to facilitate attachment of new roof or wall panels of any desired profile, directly over existing ribbed or fluted panels of various configurations. Commonly known in the trades as a sub purlin or sub girt. Generally a one piece Z shaped metal bracket with opposed top and bottom flanges in a parallel plane. The bottom flange and adjacent lower portion of the web contain a series of notches that allow the bracket to nest onto and over existing ribbed roof or wall panels. The top flange is automatically in position, lying flat and continuous, to receive and attach the new panels thereto. The solid portion of lower flange is preferred to be positioned directly above the underlying substructural support system members of the existing building to assure a structurally sound attachment of bracket to the building.

Abstract: Insulation configurations created by low density, loose-fill, particulate, blown insulation and/or fiber batt insulation in combination with high density, loose fill, particulate, blown and/or fiber batt insulation placed under or over the low density insulation, depending upon location. The insulation configurations are designed for, but are not limited to, attic insulation and floor insulation, where low density, loose-fill, particulate, blown and/or fiber batt insulation is normally used. The high density insulation so characterized isolates the low density insulation and greatly reduces air infiltration into, and circulation through, the resulting high and low density insulation configurations. The air infiltration or circulation which the insulation configurations are designed to minimize is generally characterized by, but is not limited to, heat-induced natural convection.

Abstract: A fire-resistant wall structure is provided with a recessed corner guard, for absorbing impact forces, particularly at an external corner. To compensate for the relative loss of fire-resistance capability, in the area in which the wall structure is recessed to receive the corner guard structure, surfaces within the recess are provided with a layer of intumescent paint which, when exposed to sufficiently elevated temperature, expands to develop a thick, cellular foam providing a highly effective insulating layer. The intumescent paint can be applied to surfaces of the recess itself, and/or surfaces of the corner guard assembly installed in the recess. In the latter case, the paint can be applied at the factory where the corner guard components are manufactured. Significant benefits are realized in relation to prior practices of installing ceramic matting in the wall recess at the construction site.

Abstract: A simple yet high-tech panel spacer and joint are provided. The spacer, having a bi-frustum shape, is formed of a resilient, durable material and can be conveniently installed between panels such as used in wooden doors to stop rattles and cracks in the joints as the panels expand and contract due to heat, moisture or the like.

Abstract: A support system suitably applicable as a timbering for construction of a concrete structure, which can reduce the number of parts and greatly improve the workability. The support system includes a plurality of jack members 6 placed on the ground or the like, a plurality of bottom members 5 connected to upper ends of the jack members 6, a plurality of vertical members 1 connected to upper ends of the bottom members 5, the vertical members 1 being connected with each other at upper and lower ends thereof, a plurality of vertically inverted jack members 6 connected to the upper ends of uppermost ones of the vertical members 1, a plurality of horizontal members 2 horizontally extending between the vertical members 1, and a plurality of diagonal members 3 and 4 diagonally extending between the vertical members 1. Each vertical member 1 has an annular horizontal flange 10 at the upper end.

Abstract: A suspended deck system using prefabricated deck block modules incorporates a prefabricated suspended platform. The platform comprises joist members within a frame, the joists being spaced in accordance with the size of the deck blocks, and having lateral cross braces suspended therebetween to complete the block support arrangement. Cross brace brackets are provided by means of which the cross braces are suspended from, and nailed to the platform joists, each bracket having an upstanding spacer member with an inturned toe, to serve as a corner locator for the respective deck block. The brackets may also incorporate upstanding prongs that penetrate and secure the deck blocks when located to the spacer members, and hammered down in impaled relation onto the prongs. The brackets also are provided with internal nailing guide chutes, for positioning and seating the securing nails when driven home, to anchor both bracket and cross brace to the flank of the joist.

Abstract: A wet connection method for the precast concrete units capable of performing the connection of the units in a shorter time by electrically heating the concrete placed in the connection part. This method comprises the steps of connecting the reinforcing bars of the units to each other with a second conductive member of a conductive wire or net member in a space defined by the reinforcing bars, winding a conductive liner member around the connected reinforcing bars in order to provide a first conductive member, electrically connecting terminals of an electric power source to the first and second conductive members in such a manner that the polarities of the terminal and the conductive member are opposite to each other and applying electric power to the conductive members in order to cause the concrete placed in the connection part to be heated and rapidly cured. The present connection method shortens the curing time of the concrete and the term of work.

Abstract: A container sealer and associated method are disclosed for successively applying a sealing tape to a seam between a lid and a container body for a plurality of containers and their respective lids. The sealer comprises a conveyor for advancing a plurality of generally circular containers along a substantially linear and substantially horizontal predetermined path of travel; idler rollers for temporarily holding a single container in an upright and stationary position along the predetermined path of travel; and a movable tape head operatively associated with and adjacent the idler rollers, the movable tape head being movable between a tape-applying position adjacent the predetermined path of travel and a retracted position removed from the predetermined path of travel, for applying a predetermined length of sealing tape to a held and rotating container adjacent idler rollers, the length of the sealing tape being measured in relation to a circumference of each container.

Abstract: The present invention provides a container suitable for pressurized non-flowable consumer goods such as refrigeratable bread doughs and the like. In a first embodiment, the container includes a removable lid, a shell having sidewalls, and a piston plate. The bottom of the container includes an access port therethrough to permit access to the piston plate, which may be urged upwardly to remove product from the container. In a second embodiment, the container includes a removable lid, a shell having sidewalls and a bottom, and a removable liner. The liner may include manually graspable flanges and a stirrup extending beneath the product. The product may be removed from the container by grasping the flanges of the liner and withdrawing the liner and the product through the open top of the shell.

Abstract: Feedstuff is compacted in a tube which lies on the ground by a mobile device which includes a traction vehicle, a trailer unit, and a rotatable feeding screw mounted at the rear of the trailer unit for feeding feedstuff from a container into the tube where it is compacted. The screw is rotated by a hydraulic motor which is driven by hydraulic fluid at a pressure which is proportional to loading of the feeding screw due to compaction of feedstuff by the screw. A brake system brakes the wheels of the trailer unit to produce a braking force while the feedstuff is being fed into the tube. A control unit controls the brake system in response to signals from a transducer which senses the hydraulic pressure at the motor. The braking force is reduced when the sensed hydraulic pressure rises to a predetermined maximum value, and the braking force is increased when the sensed hydraulic pressure decreases to a predetermined minimum value.

Abstract: A sleeving system consists of a sleeve forming mechanism for constructing a sleeve from a web of material and a series of pairs of prongs mounted to a pivoting turret mechanism. The prongs are moved to a collapsed position, where a partially opened sleeve is positioned over the collapsed prongs and clamped to one of the prongs. The prongs are pivoted to an inserting station, and are moved apart to open the sleeve at the inserting station. A compressed stack of articles, such as paper towels, is provided to the inserting station, and is inserted by an inserting mechanism into the space between the prongs, and therefore into the opened sleeve. The prongs are then pivoted to a removal station, where a removing mechanism functions to remove the stack from between the prongs and to simultaneously draw the sleeve off of the prongs. The stack undergoes decompression as it emerges from between the prongs, to expand into engagement with the sleeve.

Abstract: An improved packaging apparatus comprising; a pair of endless belts 70 and 70 which respectively nip a tubular film 63 at a downstream domain of a frame body 14 which is capable of reciprocating itself in order to support a pair of sealing bars 65 and 66 for sealing a tubular film 63 used for covering a number of packageable individual contents 46 being conveyed in file; two pairs of pulleys 73 and 74 which respectively support a pair of belts 70 secured to a supporting plate 71 connected to the frame body 14; and a pair of bevel gears 80 and 80 which link an idle shaft 79 having own axis horizontally being secured to the supporting plate 71 by means of a pair of shafts of those pulleys 73 and 74 engaged with a pair of endless belts 70 and 70. An endless chain 86 links a chain wheel 86 secured to the idle shaft 79, a pair of chain wheels 84 and 85 secured to the frame body 14, and a pair of chain wheels 82 and 83 secured to the frame body 14, with each other.

Abstract: A conveyor for an agricultural feed bagging machine is disclosed and includes a double-bottom auger trough which extends upwardly and rearwardly over the upper end of the front hopper panel of the hopper on the machine. A pair of elongated augers are mounted in the double-bottom trough and have flighting thereon which are oppositely disposed with respect to each other. The augers are rotated in opposite directions so that the feed is conveyed upwardly towards the upper end of the hopper. The front auger has flighting thereon which terminates at approximately where the front auger intersects the upper end of the front panel. The back auger has flighting thereon which terminates at approximately where the back auger intersects or passes over the front wall of the hopper panel. Projections are provided on the upper ends of each of the augers above the flighting thereon.

Abstract: A small riding lawn mower having a grass cutting unit suspended from a body frame between a front axle and a rear axle, an engine supported by a body frame in a position forwardly of the rear axle with respect to a longitudinal direction of the body frame, a hydrostatic transmission disposed rearwardly of the rear axle, and a driver's seat disposed forwardly of the engine. The body frame includes profile members disposed at opposite sides and extending longitudinally of the mower, and a cross plate interconnecting the profile members. A belt transmission mechanism connecting the hydrostatic transmission to an engine output shaft is surrounded by a plate frame structure formed below the body frame. The plate frame structure defines a further independent chamber for accommodating a muffler of the engine. This chamber has peripheral walls shaped to guide cooling air from the engine to the muffler and laterally outwardly of the mower.

Abstract: A device intended for installation onto a rotary cord herbage trimmer to permit the trimmer to easily slide omnidirectionally upon the ground being serviced is comprised of a circular saucer-like disc having a downwardly convex bottom surface and an upwardly concave top surface. A straight mounting post is upwardly emergent from the center of the concave surface, and terminates in a threaded distal extremity.

Abstract: The invention relates to a mowing machine provided with a frame and with a plurality of mowing means arranged side by side in a row, which are supported by the frame, which mowing means are rotatable about upwardly extending axes of rotation during operation and which are each connected to a pulley. A driving belt is passed over said pulleys connected to the mowing means, said driving belt also being passed over a pulley arranged near one end of the row of mowing means, which pulley can be driven from a driving source driving the mowing machine during operation. The contact between the driving belt and the pulleys connected to the mowing means is arranged in such a manner, that with the same tensile force in the part of the driving belt that is in contact with the pulley in question the driving belt can transmit more power to a pulley connected to a mowing means which is located near the drivable pulley than to a pulley connected to a mowing means which is located further away from the drivable pulley.

Abstract: A riding lawn mower having a mower unit suspended from a chassis frame through a link mechanism. A driver's seat supporting auxiliary frame is provided, which includes a foot rest, a seat mount and right and left rear wheel fenders formed integral with one another. The auxiliary frame has a forward end portion thereof supported by the chassis frame to be pivotable about a cross pin, and a rear end portion supported by the chassis frame through a suspension mechanism. The cross pin is disposed adjacent a shift pedal and a brake pedal, while the suspension mechanism is disposed below the driver's seat.

Abstract: A round baler having a main frame, a tailgate pivotally connected to the main frame and an apron extending around a plurality of guide rolls disposed in the main frame and the tailgate. A pair of take up arms, rotatably mounted on the main frame, carry at least one additional guide roll for the apron. The apron defines a bale forming chamber which varies in size from a bale starting position to a full bale position under conditions where crop material is conveyed thereto. A pair of levers, connected to rotate with the take up arms as the girth of the bale being formed increases, are attached to a tensioning mechanism to urge the take up arms to the bale starting position of the apron. The tensioning mechanism includes a spring and a hydraulic cylinder mounted in tandem on one side of the baler and a spring on the other side of the baler.

Abstract: A crankshaft is rotated about its central longitudinal axis and abrasive belts are moved along paths substantially perpendicular to the crankshaft such that the abrasive surfaces of the belts grind the crankpin journals while the crankshaft rotates. The belts are guided independently of one another at the point of contact with the crankpin journals along a variable path according to the position of the crankpin journal around the central longitudinal axis of the crankshaft as the crankshaft rotates. Each belt may be guided by a thin, flat blade across which the belt slides, or it may be guided by a freely rotatable roller in substantially frictionless contact with the belt.

Abstract: A process for cleaning an open-end spinning rotor which has a fiber collection channel and an open edge, which is covered by a rotor cover. A first compressed-air stream is directed towards the fiber collection channel in a first cleaning phase. Then, in a second cleaning phase, the spacing between the open edge of the spinning rotor and the rotor cover is increased. In addition, a suction air flow leaving the spinning rotor over its open edge is produced. To carry out this process, there is associated with the rotor cover an opening apparatus which is connected, together with at least one blower channel to a common control apparatus.

Abstract: During the production of a yarn, and independently of fiber feeding into the spinning element, the air circling together with the opener roller during spinning is removed from the area of the housing which does not convey fibers by an auxiliary air stream which is so strong that it removes fibers and fiber fragments that have become detached from the opener roller and are circling with the opener roller. The auxiliary air stream removed from the housing is introduced into the spinning rotor in such manner that the fibers which are conveyed with it are deposited on the fiber collection surface. To remove the auxiliary air stream, an auxiliary channel is provided which is connected to the source of negative pressure independently of the fiber feeding channel and at the same time may let out into the spinning element.

Abstract: Apparatus for igniting fuel in a combustor having at least one fuel nozzle that emits an atomized fuel spray into a primary zone of the combustion chamber comprising a laser energy source for producing infrared laser energy and optic fiber means for transmitting the laser energy from the laser source into the primary zone of the combustor to ignite the fuel spray. In one embodiment the laser igniter is disposed in a main fuel nozzle of the combustor.

Abstract: A gas and steam turbine system includes a coal mill. A steam turbine has a water-steam loop. A gas turbine has an exhaust gas side supplying exhaust gas. A first heat exchanger is connected to the exhaust gas side of the gas turbine. A steam generator is connected downstream of the exhaust gas side of the gas turbine and upstream of the steam turbine in the water-steam loop for generating steam for the steam turbine. The steam generator has a furnace system connected downstream of the coal mill for supplying flue gas flowing through the steam generator. A second heat exchanger is connected to the coal mill. A first adjustable fractional quantity of the exhaust gas from the gas turbine after being cooled in the first heat exchanger, is delivered to the furnace system as combustion air. A second adjustable fractional quantity of the cooled exhaust gas is delivered to the second heat exchanger for heating air for the coal mill.

Abstract: A plasma jet igniter is used to reliably relight a jet engine at high altitudes under adverse combustion conditions. The air-fuel mixture from the primary combustion zone of the jet engine combustor may be used as the plasma medium or, alternatively, liquid fuel direct from the aircraft fuel system may be used as a fuel charge.

Abstract: A hybrid rocket motor having enhanced fuel combustion efficiency is disclosed which includes a plurality of axially aligned fuel grains having multiple axial perforations. The fuel grains are rotated or canted relative to adjacent fuel grains such that the multiple axial perforations are offset.

Abstract: An improved flameholder for a thrust augmentation combustor includes a toroidal pilot gutter and inner and outer radial gutters, all having U-shaped cross-section and formed from a single piece of metal. The one-piece formation enables design improvements and variations which were not possible in the multiple piece construction of the prior art.

Abstract: An integral, one-piece afterburner structure for a turbojet engine is disclosed which is formed of composite material. The afterburner structure has an outer casing formed as a body of revolution about a central axis, an inner casing also formed as a body of revolution about the central axis, which casings are integrally joined by a plurality of connecting arms extending between the inner and outer casing. The connecting arms are also formed of a composite material and are integrally molded with both the inner and outer casings. The afterburner structure also has a plurality of secondary support arms formed of composite material which extend either from the outer, or the inner casing in a generally radial direction relative to the central axis. Integrally formed with the plurality of secondary support arms is at least one annular flameholder ring which extends around the central axis and is supported by the secondary support arms.