Abstract: The boot (1) comprises a device (35) for front-to-back immobilization of the upper (2), which acts on an oscillating lever (11) capable of being supported against a stop (13) on the shell base (5). The device is constituted by a rectilinear-motion control mechanism (10) incorporating an external control device (18), of which an inner part (19) actuates, via a cam (19a), a sensing device (49) associated with the oscillating lever (11) so as to impart to the latter an angular rotating movement around its pin (12) toward a locked or released position in relation to the stop (13) formed on the shell base (5).

Abstract: An attachment assembly for securing excavation teeth to the loading or dipper bucket on large excavation equipment. The assembly includes a bucket lip adapted to be secured to a loading or dipper bucket, and a plurality of shanks adapted to be secured to the lip and carry the excavation teeth. The lip defines a forward edge extending transversely thereacross and defining a plurality of spaced first curvilinear bearing surfaces. Each of the shanks carried by the bucket lip defines a lateral channel therein adapted to receive a portion of the bucket lip and terminating in a second curvilinear bearing surface. The second curvilinear bearing surface abuts and mates with one of the first curvilinear bearing surfaces on the bucket lip upon shank being disposed thereover.

Abstract: A badge included a badge plate and multiple and interchangeable means of fastening the badge to clothing or other items that are releasably attached, allowing the means of fastening to be interchanged. The means of fastening the badge includes a clip, a pair of military style pins, an alligator clip, a horizontal pin or a magnet.

Abstract: A multi-purpose, front-loading display frame includes a front frame member having a window section for viewing a display item disposed therebehind and a rear frame member for releasably supporting at least one interchangeable display item. The front frame member is hingedly secured to the rear frame member so as to allow for pivotable movement of the frame members between a closed position, in which the frame members are disposed closely adjacent to one another so that a display item supported on the rear frame member is disposed behind the window section for viewing, and an open position, in which the frame members are pivoted apart from one another to permit removal and replacement of the display item. A closure member is mounted on at least one of the front and rear frame members for releasably maintaining the front and rear frame members in the closed position thereof.

Abstract: An edgelit luminaire 10 and a display panel 26 for same in which light generated by a light source 30 is evenly distributed throughout the panel. The panel is formed of a sheet 27 of transparent or semi-transparent plastics, one side of which bears a sign, notice or graphic symbol 32. The sign 32 has sections of different opacity. A plurality of uniformly sized and uniformly spaced dots 34 are overprinted over the sign 32 and the panel 26 to form a half-tone of a color matching, complimenting or contrasting with that of the sign 32. The dots 34 are luminous such that light impinging thereon is reflected and transmitted throughout the panel 26 ensuring an even light distribution.

Abstract: An identification band having a pocket portion and a strap portion extending from the pocket portion. The pocket portion encloses identification information pertaining to the wearer. The periphery of the pocket portion is configured to convey a creative artistic impression, that is, a configuration resembling at least a portion of any one of a living being (alive now or in the past), cartoon character, a man-made functional article (such a transportation vehicle and a building), a natural object (such as a cloud or star) and a decoration (such as holiday decorations and artwork). The pocket portion may be relatively planar or be formed so that the artistic impression is three-dimensional.

Abstract: Toy guns are disclosed which are capable of simultaneously generating light and sound effects, having rotating a barrel assembly, creating vibrations in the body of the toy gun and operating a rapid indexing and cap firing mechanism. The rotating barrels, the cap indexing and firing mechanism and the vibration mechanism are all driven from a motor-driven gear and shaft assembly positioned within the toy gun. A dual action trigger is used to energize the light and sound effects when the trigger is activated to make a first electrical contact. Upon further activation, the trigger makes a second electrical contact which powers the motor and the gear and shaft assembly to drive the rotating barrel assembly, the cap indexing and firing mechanism and the vibration mechanism, as the light and sound effects continue.

Abstract: A trigger guard alarm system for a firearm which comprises a trigger locking device and a means for generating an alarm to indicate unauthorized removal of the trigger locking device. The alarm system is on the trigger lock and is activated by placing the lock around the trigger. The alarm is subsequently deactivated by entering a predetermined signal in the alarm generating means.

Abstract: A towable Otter Board having upstream facing flap portions is disclosed for use in trawl fishing applications. The flap portions are used to divert fluid flow from the concave lower board surface to the upper convex board surface which serves to shift a vortex formed proximate the upper board surface further downstream to a position closer to the trailing edge of the board which provides considerable improvement over the prior art by decreasing drag and increasing lift. A single wing and bi-plane version of the board is disclosed.

Abstract: A fishing line guide has an attaching seat 2 attached to a fishing rod and fishing line guide part 5 located above the attaching seat 2. The fishing line guide part 5 has width substantially equal to or smaller than the width of the attaching seat 2, inclined surfaces 6, 7 formed from front and rear end faces to front and rear parts of the attaching seat 2 and side faces formed in smoothly sloped surfaces. The fishing line guide part 5 is configured in a sloping form in section so that the circumferential length in each horizontal plane of the fishing line guide part 5 is smaller than the circumferential length in each horizontal plane taken closer to the axis of the fishing rod. Therefore, a fishing line twining on the fishing line guide part 5 can smoothly and easily loosen upward and thus, can be prevented from tangling on the fishing line guide.

Abstract: An environmentally controlled cabinet is provided for maintaining and displaying plants of various types indoors. A fresh water supply, cooling system and exhaust and ventilation fans are contained in the cabinet, so that the entire system is portable. The cabinet further includes a computerized control system, which is responsive to user input commands for controlling various environmental functions, such as plant watering, temperature, humidity, air circulation and lighting. The ambient conditions within the cabinet are programmable for daytime, nighttime and seasonal cycles. The ambient temperature within the growing chamber can be maintained at a relatively constant level, or alternatively, a temperature differential can be maintained within the growing chamber to accommodate various types of plants which thrive under different temperature conditions.

Abstract: A security window guard is permanently installed into pre-existing awning-type windows (also referred to as Miami windows) by first fastening a separate strip inside the window jambs with fasteners that anchor the strip through a jamb to the wall. This strip has an array of holes that incorporate lead-in guides extending from each hole to a free edge of the strip. Subsequently, holes are drilled in the window jambs at locations aligned with a plurality of pins that protrude from the security frame, an array of fixed pins formed on one side of the security frame is inserted into one set of holes, and the security frame is pushed into the window frame. When the security frame is pushed into the window frame the lead-in guides act to compress spring-loaded pins extending from an opposing edge of the security frame.

Abstract: A portable security grill apparatus which may be installed in window openings of buildings includes two rectangular grill sections longitudinally telescopically fastened to one another. Opposite longitudinal ends of the two grill sections have beams disposed perpendicularly to the axis of longitudinal telescoping movability of the two grill sections, the beams having flat outer surfaces adapted to abut a window edge at one end of the grill apparatus, and a window frame edge, at the other end of the apparatus. At least one toggle clamp Connected between telescopically joined members of the two grill sections is capable of exerting a large outward extension force when in a closed, clamped position, thereby exerting compressive forces on the window and window frame sufficient to prevent the grill apparatus from being removed from the window opening.

Abstract: A reversible threshold is provided for positioning beneath a door mounted in a door frame. The threshold includes a base and a riser which is removably connected to the base and provides a sealing surface for the bottom edge of the door. The riser has a sloped upper surface to carry water away from the door. The base can be placed in one orientation for an in-swing door mounting and another position for an out-swing door mounting. The riser is also reversible so that it can be placed with the top surface sloping away from the door when the base is in either orientation.

Abstract: A glass door and hinging mechanism where a glass panel may have a frame disposed entirely outside of the panel surface and perimeter of the panel which is held to the panel edge by a zone of bonding material, the glass door frame being provided with mounting members for receipt in hinging mechanism assemblies which are positioned above and below a doorway.

Abstract: An improved locking feature for a watertight hatch incorporates a positive break-open feature to facilitate opening when the hatch is jammed with ice and/or debris. A plurality of radially extending/retracting locking bars cooperate with closing cams such that, when the bars are extended, the hatch is drawn into tight engagement with a sealing gasket. When the locking bars are fully retracted, in order to release the hatch for opening, at least selected ones of the locking bars cooperate with opening cam means whereby full retraction of the bars forcibly displaces the hatch in an opening direction with a high mechanical advantage, initially breaking the hatch free of any restricting ice formation or packed debris. Thereafter, the hatch may be readily opened by being manually lifted in a conventional manner. The arrangement makes it entirely feasible to configure the hatch cover to be flush with its surroundings, so as to be useable in sidewalks, for example, where there may be heavy pedestrian traffic.

Abstract: A computer is used to calculate the location of a target, customize the target to conform to the lens, frame and patient characteristics of each individual job and automatically compensate for parallax in the apparatus. A convenient open work surface is provided for the operator to position the lens blank on a non-skid surface. The block is applied at a constant limited force in a manual or automatic mode of operation on either frame or optical center. The offsets for positioning the lens blank are calculated within the blocker based upon frame and patient data. This data can be input directly or can be downloaded from a database. These offsets determine the location of the target relative to the optical markings on the lens blank. The amount the target is offset is scaled automatically to compensate for the fact that the lens blanks are on a work surface above the electronic display. A customized target is displayed.

Abstract: A hydraulic cam feed unit is provided for moving a tool slide linearly towards and away from a workpiece. The feed unit comprises a hydraulic advance cylinder having a double rod, one end of which is connected to the tool slide to move the tool slide towards and away from the workpiece. A cam engaging member is connected to the opposite end of the double rod for linear movement with the double rod and the tool slide, and a cam is provided in selective engagement with the cam engaging member. A hydraulic feed cylinder has a single rod connected to the cam for linearly reciprocating the cam. When the cam is in engagement with the cam engaging member, the linear movement of the cam controls the linear movement of the tool slide.

Abstract: The milling machine disclosed herein offers significant advantages over prior milling machines, particularly in the field of milling composite panels. The structure of the milling machine, having a C-shaped frame with a clamping mechanism that cooperates with roller transfer balls, provides an accurate and stable reference during the milling operation. A vacuum system substantially eliminates the dust produced during the milling operation, so that the machine is cleaner and grinds more accurately. An electrical system, having a retractable bit control and emergency stopping modes, facilitates even more accurate grinding without undesirable results.

Abstract: A rotatable sharpening device which includes a mounting shaft, and a sharpening head integral with the mounting shaft and having a disc-like sharpening face distal from and co-axial with the mounting shaft. The sharpening head is substantially in the form of a shallow frusto-cone having a base coated with fine particles of diamond to constitute the sharpening face, and having a chamfered rim portion adjacent the sharpening face. The upper surface of the sharpening head is shaped to allow lubricating fluid to lubricate a workpiece by flowing along the upper surface to the edge of the sharpening face.

Abstract: A lens axis alignment device is provided for use in a lens-surfacing machine. The device has a lens carrier for a blocked lens and means for locking the blocked lens on the carrier. The lens axis alignment means is provided to align the blocked lens axis with respect to the carrier. The invention enables optical retail stores to provide 1-hour service for multifocal lenses using only one machine at the retail point.

Abstract: A fuel and oxygen mixture is combusted within an internal burner combustion chamber at temperatures ranging from 250 psi to 1,000 psi. The products of combustion are directed through a restricting nozzle throat and a supersonic expansion nozzle section into an elongated duct formed by an extended nozzle length. Abrasive particles are introduced into the supersonic flow jet stream near the entrance to the elongated duct to accelerate the particles to extreme velocity, with the combustion pressure maintained sufficiently high to limit the jet stream temperature to that which is insufficient throughout the elongated duct to raise the particle temperatures to the plastic point of the particle material. The temperature of the supersonic gas flow through the elongated duct may be reduced by the introduction of a cooling flow into the jet stream beyond the flow-restricting nozzle throat. The cooling flow may be a flow of water or other liquid coolant or cool compressed air.

Abstract: An apparatus and method for facilitating the grinding wheel sharpening of contour knife blades having a contoured cutting edge formed along one side thereof includes contour profile knife blades having a passageway formed therethrough, the passageway having an opening into the flat surface of the knife blade and an opening into the mounting surface of the knife blade, the opening into the flat surface being of greater diameter than the opening to the mounting surface.

Abstract: A saw blade clamp unit for holding saw blade in a manner to permit machining of side faces of hard material tips provided upon the teeth of the saw blades. The saw blade clamp unit clamps a saw blade tooth adjacent to a saw blade tooth tip being machined, holding the saw blade. The clamping mechanism of the clamp unit is arranged to form a lateral reference position for the tooth to be machined, with the tooth being set to the required grinding position during the clamping operation.

Abstract: Current manual vacuum sanders do not adequately capture dust from around the edges of the sander. The present invention provides a back-up pad for a vacuum hand sanding device for sanding a working surface, where the device is of the type comprising a tailpiece for connecting a source of vacuum, a base for attaching a back-up pad and screw clamps for releasably attaching an abrasive, air-permeable sheet.

Abstract: A novel and improved polishing apparatus is disclosed which employs ice particles as an abrasive material, the hardness of which can be changed so as to match that of an article being polished for performing polishing operation in a most efficient manner without impairing or marring the polished surface of the article.

Abstract: A blast nozzle apparatus for directing abrasive particles against a surface to remove therefrom adherent materials includes a flow straightener intermediate the blast nozzle and flexible supply hose so as to rehomogenize the abrasive particles throughout the total area of the blast nozzle inlet and counteract the nonuniform concentrating effect on the blast media as the abrasive particles are being carried through the bends and turns of the flexible supply hose. The flow straightener includes a rigid longitudinal bore between the supply hose and blast nozzle inlet.

Abstract: The invention relates to a sandblasting method using abrasives, such as untreated sands and in particular river and quarry sands, the abrasive and water being fed to a pressure tank (1a), a flowable water-abrasive mixture being produced in the pressure tank (1a) and this mixture being removed from the pressure tank (1a) and fed through a hose pipe (20) to a blast nozzle (21). The invention also relates to a moist-sand blasting apparatus (1). In order to provide a universally applicable sandblasting method and a corresponding apparatus, the invention permits water, compressed air and water-abrasive mixture to be fed to the hose pipe (20) via switch means (13, 15, 17) of a control unit (100) alternatively per se or in the combinations water and compressed air, water and water-abrasive mixture, compressed air and water, and water, compressed air and water-abrasive mixture.

Abstract: The adapter element for anchoring devices of the dowel type for wall covering slabs having slotted seats includes a flattened parallelepipedal body which is insertable edgeways in the slotted seat of a slab and a laminar wing which extends laterally from the base of the body. A hole for the insertion of the dowel of the anchoring device is arranged in a median region in the body.

Abstract: A door system for a stressed fabric structure comprising a stationary arched anchor beam, the ends of which are supported on the base at one end of the structure, a plurality of movable arched beams of similar size and shape on the side of the anchor beam away from the structure and having supporting ends pivotally secured at the ends of the anchor beam, the movable beams to pivot along the same radial path about common pivot points at the ends, between raised, open position adjacent to the anchor beam and closed position in which the beams are spaced progressively from the anchor beam to the structure base. Fabric panels are secured to and extend between each of the anchor beam and its adjacent movable beam and adjacent pairs of movable beams so as to be under similar tension when the beams are in closed position.

Abstract: A modular landscape timber system used generally to construct retaining walls and boxed gardens having a plurality of vertically aligned layers of modular first members having ends with ball and socket joint portions that interfit with one another, a plurality of braces, and a plurality of spikes that are driven through the braces on an incline to fasten the ends of the timber members together with a resulting joint that resists rotational movement. The system further includes a deadman joint that serves to maintain the vertical alignment of the layers of first members.

Abstract: A door light frame assembly adapted for use with any of three different types of door construction includes a universal outer frame structure, attachable by screws to any one of three different inner frame structures, depending upon the type of door construction with which the frame assembly is to be used, for securely gripping the inner and outer sides of the door construction around the perimeter of an opening therethrough. The inner and outer frame structures, when assembled, also cooperate to define two separate peripheral channels of different widths for respectively clamping two different-thicknesses of window pane units. The outer frame structure also includes a peripheral groove cut away at two spaced-apart locations therein to define access openings for receiving therein peripheral edge portions of a flexible insert.

Abstract: The invention relates to a prestressed concrete slab and a method for preparing the slab. The slab comprises a corner post at each of its corners. The corner post comprises a cylindrical member; means of attaching and securing reinforcing members to the corner posts; means of attaching each slab to another slab; and means of tensioning the reinforcing members. The slab further includes a center post. The center post comprises a cylindrical member and means of attaching and securing reinforcing members to the center post. Reinforcing members are attached to the corner post and the center posts to connect each to the other. Concrete is set and cured between the corner posts and around the center post and the reinforcing members to form a slab.

Abstract: A corner element for use in combination with cabinet corner structures such as those found in kitchen cabinets or the like includes a pair of side portions having an angular relationship therebetween which corresponds to the angle of cabinet intersection. An obliquely angled facet extends between the side portions. A generally cylindrical concave curved surface extends between the remaining end portions of the side surfaces to complete the corner element. In its preferred use, the corner element is secured to the cabinet base portions at the corner area to interpose the curved surface between the base portions and preclude dirt or debris from accumulating within the corner intersection of the cabinet bases.

Abstract: A roofing tile including a tile body having an upper surface covered with a fire resistant coating including an acrylic or asphaltic adhesive, usually the former, containing a wire mesh and intermixed with fire retardant particles formed of a material or materials selected from the group consisting of sodium carbonate, ammonium phosphate and a light weight portland cement concrete, with decorative and heat resistant particles adhered to the upper surface of the adhesive, and desirably including a top layer of sodium silicate covering the last mentioned particles.

Abstract: A concrete panel is provided having a threaded cylindrical concrete insert imbedded therein for receipt of a bolt. Preferably, the concrete inserts are imbedded in each corner of the panel. The inserts have an opening on at least one end thereof for receipt of a securing bolt after they have been imbedded in the concrete panel. Each insert has a passageway which allows a reinforcing bar to pass through the cylindrical insert. The concrete inserts can extend the entire thickness of the panel and the cylindrical bore opens on both sides of the panel. As a result the panel can be secured from either side during construction of a building. The panel can then be made with one style or configuration on one side and a different style on the other side. Thus, two different style buildings can be constructed from the panels.

Abstract: Bricklaying equipment includes a guideway extending along brick masonry being erected. A bricklaying machine displaces along the guideway. It has a robotic arm with an upper arm and a forearm. The upper arm pivots about a shoulder joint, and the forearm pivots relative to the upper arm at an elbow joint. A wrist joint permits a tool assembly, including a mortar-dispensing mechanism and a brick-gripping mechanism, to pivot relative to the forearm. The mortar-dispensing mechanism includes a form that receives and shapes a mortar charge, and a sliding gate mechanism that discharges the shaped charge. The arm is operated with a single motor that pivots the upper arm. Linkage constrains the tool assembly to move along a horizontal axis as the upper arm pivots and to remain in a fixed angular orientation relative to vertical. The arm is operated in response to sensors that detect vertical and horizontal distances to a mason's line.

Abstract: The invention concerns an apparatus for applying closures to containers. Each closure is carried to a respective container in a chuck of a closure holder mounted on a closure conveyor. The holder has an axially movable spindle which is yieldably moved from a retracted position to an extended position as the closure conveyor moves. The spindle may be selectively rotated while in extended position, by a pulley which is coupled to it by a clutch. The closures are applied to containers moving on a straight run of a container conveyor. The closure conveyor carries the closures along a linear path parallel to the containers while the spindles are sequentially extended to apply the closures.

Abstract: A storage bag and a method and apparatus for forming such a storage bag. The storage bag contains a reclosure tie formed as an integral marginal portion of the bag beyond an edge of the bag. The marginal portion includes overlying layers of bag material that form an elongated structure along an axis with first and second ends. A fused closure is formed in the marginal portion parallel to the axis and over a portion of the marginal portion spaced from one end thereof. This structure defines a tail and open loop that wrap around an opened bag thereby to close the bag in a positive fashion.

Abstract: A machine for conditioning filled and sealed bags for testing, to assure that the bags are accurately tested without damaging the product contained in the bags, and for packaging the bags that have passed the test in cartons with the longitudinal axis of the bags arranged vertical.

Abstract: An insertion station for a mail-handling machine includes a driving lever 25 and a means for swivelling the driving lever 25 back-and-forth according to an operating cycle. Axle members 18, 19 have a cam 20 mounted therebetween and a spring 26 extends between the driving lever 25 and the cam. A base plate 1 includes grooves 2, 3, 4 and finger-roller guides 28 have front and rear ends mounted above the base plate. Insertion ramps 35, 36, 37 are located below the rear ends of the finger-roller guides; and, inserting arm means 8, 9, 10 and 14, 15, 16 have fingers 5, 6, 7 and finger rollers 27, 38, 39 attached thereto.

Abstract: A releasable restraining device suitable for use with saddle-type seats for horses, motor vehicles, or other forms of locomotion. The releasable restraining device includes a toroidal, semicircular, or elliptical doughnut-shaped rubber bladder or other suitable material for circumventing the rider and attachments for securing the rider's lower extremities to the saddle, thereby allowing his upper torso to be free to manipulate the vehicle or the reins of a horse.

Abstract: A mower blade suitable for bagging, side discharge and mulching is provided. A laterally upswept outboard cutting portion cuts the grass and sucks the clippings upwardly. The clippings are forced by the combined effects of the upswept outboard cutting portion and an upswept inboard cutting portion into an intermediate cutting portion where they are further comminuted and are then sucked back into both the outboard cutting portion and the inboard cutting portion. These double circulation paths result in excellent comminution and superior hiding of the clippings.

Abstract: A mulching and shredding attachment for use on lawn mowers or lawn vacuums held in place by a bracket which uses a lever (44) and a clevis pin (54) so that the mulcher can easily be removed or lifted up while remaining attached to said lawn equipment. The mulcher is made of rigid material and shaped into a chute (10) and uses a bottom plate (24) and an adjustable deflector (20) which allows lawn debris to be directed into the lawn. Inside the mulcher chute (10) is a cutter grid with sharpened blades (16) positioned parallel with the natural travel of exiting lawn debris as it passes through the mulcher chute (10). The cutter grid is fastened by a rod (34) which permits up and down movement of said cutter grid. This movement is limited by means of a lever (32) attached to the upper end of the cutter grid as it comes in contact with the upper inside surface of the mulcher chute (10). The horizonal position of the sharpened blades (30) allows a variety of materials, including leaves, pine needles, twigs, ect.

Abstract: A textile machine for processing sliver includes a plurality of work stations disposed side by side. Each of the work stations has a respective fixedly assigned parking place. Sliver cans are each disposed on a respective one of the parking places behind one another in at least two rows for supplying the work stations with sliver. An automatic can changer replaces any of the sliver cans that have become empty with filled sliver cans. A device monitors contents of the sliver cans and recognizes a sliver interruption when the sliver cans are still partly full. The work stations have sliver delivery devices and the work stations include given work stations. The sliver delivery devices of the given work stations each have a device for permitting sliver supply to a respective one of the given work stations only from a sliver can located on the fixedly assigned parking place of the respective one given work station.

Abstract: The present invention relates to ply-twisted yarns comprising fiber blends of about 70 to 90 weight percent base fiber and about 10 to 30 percent non-melt compatible polyolefin fiber having a melting point of about 130.degree. to 170.degree. C. The base fiber may be polyamides, polyesters, or fiber mixtures thereof. The ply-twisted yarns may be heat-set by a conventional process, whereupon the polyolefin fibers melt and bond to each other but do not bond to the base fibers.

Abstract: A method for the doffing of a yarn winding machine which is composed of several side-by-side winding stations, and wherein identical packages having the same build and yarn length are produced on the several stations. The doffing procedure includes the simultaneous cutting of the yarns of all of the stations at the end of the winding cycle, the replacing of the full packages with empty bobbins, the threadup of the empty bobbins, and the simultaneous commencement of the yarn traverse at all of the stations.

Abstract: A frame for a gas turbine engine includes an outer casing, an inner hub, and a plurality of circumferentially spaced apart struts extending radially therebetween. Each strut includes first and second sidewalls defining a radial passage therein, and an elongate damper is disposed in respective ones of the strut passages. Each damper is disposed in an interference fit laterally between the first and second sidewalls for maintaining contact therewith for effecting sliding friction to dampen vibration of the struts.

Abstract: A nacelle cooling and ventilation system for an aircraft gas turbine engine which includes a chin scoop and duct assembly for directing air through the engine bay where it is exhausted into the engine exhaust through an exhaust shroud eductor. The nacelle is enclosed so that effectively all of the cooling air entering the bay leaves the bay through the engine exhaust and is not dumped overboard, thereby adding to the effective thrust of the engine. An engine oil and generator oil heat exchanger is positioned in the cooling air duct into the bay so that the same air which cools the bay also cools engine and generator oil. The oil heat exchanger includes directional louvers which regulate and keep to a minimum the amount of cooling air and direct cooling air forwardly in the bay so that the entire bay area is cooled, and which can be shut as a fire control measure.

Abstract: This gas turbine arrangement has an at least two-stage gas turbine (1) with a main combustion chamber (10) and a compressor (5). An energy exchanger (8) which interacts with the separate combustion chamber (14) is installed upstream of the gas turbine (1). The efficiency of the gas turbine arrangement is to be increased by simple means. In order to achieve this, the separate combustion chamber (14) is designed as an afterburner chamber for a part of the gases generated in the main combustion chamber (10). In addition, means for the additional injection of a liquid or vapor medium are provided in the region of the combustion chamber (14). The volume flow in the energy exchanger (8) and hence the efficiency of the gas turbine arrangement are increased by this injection.