Abstract: The subject of this invention is a sauna ventilation system which is built into the stove (1) as a single part belonging to it. The ventilation system includes, where required, a heat recovery unit (4), air inlet, circulation, and outlet ducts with ventilators (16 and 21) and air filters (22), outlet and inlet air impellers (17), air humidifier and mixture systems (19 and 20), condensed water removal system (12 and 14) and moisture sensor equipment (15) and operating equipment (3). The sauna fire prevention system is also connected to the stove, which is built into, and integrated with the stove as a single part belonging to it. The fire prevention system includes the fire extinguishing system (59), in which water is directed towards the location of the fire and/or its surrounding area by spray and/or by jet. The integrated system is controlled by the operating, regulating and programing equipment.

Abstract: A spa system which employs a removable drain cover. Removal of the drain cover will cause a proximity switch to turn off the circulation pump in the spa. In a preferred embodiment, the removable drain cover has a magnet attached to it and a magnetically actuable reed switch is attached to the drain body in proximity to the drain cover. Removal of the drain cover with the magnet attached will cause the reed switch to change state which opens a circuit controlling the operation of the spa pump thereby shutting down the spa circulation system. As a result, the spa circulation system cannot be operated without the drain cover in place. This reduces the likelihood of unwanted objects being drawn into the drain. Furthermore, should the spa user's hair become entangled in the drain cover or the drain pipe, the spa pump may be turned off by simply removing the drain cover thereby permitting the entangled user to be released.

Abstract: Carriers for medical facilities, in particular patient tables, sometimes require a large range of displacement. This situation occurs, for example, in interventional MRI where a patient is to be transferred from an operating table 14 to an MRI table 10 which is situated at some distance therefrom. Components of the table 14 may not form obstacles on the floor of the room and the stiffness and stability of the table construction must be maintained. According to the invention two adjacent box-shaped spaces 30, 38 are provided in the floor of the treatment room, said spaces being separated by a partition 42. One space 30 accommodates only rails 26a,b which carry the pedestal 20 of the table 14 but no other components of the displacement mechanism for the table. The other space 38 contains the further components of the displacement mechanism. A guide member 44 protrudes through the partition, via sealing means 56, so as to guide the movement of the table.

Abstract: An adjustable pillow includes a bag body formed from a fabric material and including a closure device for closing and opening the bag body, the bag body being internally provided with more than one partitioning piece to define two or more chambers; and linings in units of one or more than two and sized to correspond to the chambers so as to be selectively disposed in the chambers.

Abstract: The present invention relates to methods of producing wool or animal hair material with improved properties such as shrink-proofed (anti-felting tendency), increased whiteness, improved dyeability, increased softness and/or reduced pilling tendency, the method comprising the steps of treating wool, wool fibres or animal hair material in a process selected from the group consisting of plasma treatment processes and the Delhey process, and subjecting the wool or animal hair material to a treatment with a proteolytic enzyme (a protease), preferably a serine protease, more preferably a subtilisin, in an amount effective for improving the properties.

Abstract: The invention provides a method for increasing the brightness retention of a laundered fabric after numerous washing cycles by adding to an aqueous wash liquor a quantity of a commercial laundry detergent which delivers at least 0.1 g of an optical brightener into said wash liquor, said optical brightener exhibiting instability in the presence of hypochlorite; and prior to, concurrent with, or after the commercial laundry detergent, adding a bleaching composition in an amount of at least about 0.5 g/L. The bleaching composition contains about 2.5-10% alkali metal hypochlorite; about 0.05-5% of a bleach stable surfactant bearing at least one nitrogen atom; a bleach stable anionic surfactant or a hydrotrope, wherein the ratio of (ii) to (iii) is between about 10:1 to about 1:10; and an effective amount of a source of alkalinity.

Abstract: A polyester film can be dyed by coating the film with a layer of a dye mixture which is a suspension of at least one disperse dyestuff in a solution of a thickener in water and which has a viscosity of no more than 500 centipoise, preferably 5-50 centipoise, at ambient temperature, followed by heating to cause the dyestuff to migrate from the layer into the film. The coating process is preferably reverse gravure printing. The process can be used to prepare films which contain one or more dyestuffs in one surface region of the film and one or more different dyestuffs, for example an ultraviolet absorber, in the other surface region of the film. The dyed films show good resistance to fading when exposed to light and are useful for example as automobile window films.

Abstract: A pipeline pig includes a central body member, a plurality of circumferentially spaced return path elements surrounding said body member and each extending axially relative to the body member, each return path element including a pair of axially spaced magnets from each of which projects a metallic bristle set, and means for connecting the return path elements to the body member whereby the free ends of the bristles, in use, resiliently engage the inner wall of the pipeline, the connecting means comprising a first carrier member mounted on, to be axially slidable relative to, the front extent of the body member and resiliently urged towards the rear of the body member, a second carrier member mounted on, to be axially slidable relative to, the rear extent of the body member and resiliently urged towards the front of the body member, and, for each return path element, a front link pivotally interconnecting the front of the return path element and the first carrier member, and a rear link pivotally interconnect

Abstract: A process for preparing a powdery alkyl sulfate, comprising drying aqueous slurry having a solid content of 60 to 85% by weight and containing an alkyl sulfate and an alkali metal carbonate in a ratio of 0.05 to 10 parts by weight of the alkali metal carbonate based on 100 parts by weight of the alkyl sulfate. This process is capable of stably preparing a powdery alkyl sulfate without deteriorating the quality of aqueous slurry of an alkyl sulfate and powder obtainable from the aqueous slurry.

Abstract: An alignment tool (10) for aligning two individual conduits (14, 18), the conduits having flanged ends with bolt holes passing therethrough. In the preferred embodiment, the alignment tool (10) is hand operated using a lever (24) and appropriate pivot points. In an alternative embodiment, a hydraulic cylinder is used such that larger conduits may be aligned.

Abstract: This invention relates to a method for the manufacture of a gas-turbine combustion chamber which consists of individual wall sections produced by casting. To make up the combustion chamber, the wall sections are joined by laser welding. Preferably, the individual wall sections are segments of the annular or circular combustion chamber, with the casting material of the wall sections being a high-temperature nickel-base casting alloy.

Abstract: The present invention includes a light metal cylinder block comprising a cylinder running face which is coated with silicon. The invention also includes a method by which the silicon is applied to the running face comprising melting powdered metal silicon, which is fired at the face in a powdered metal beam, under heat of a laser which is fired at the running face at the point of impact of the powdered beam. Furthermore, the invention includes a device with which the cylinder block may be manufactured.

Abstract: The invention relates to an electrically driven shaving apparatus of the type having a reciprocating cutter (6). The cutter is situated in a shaving head (2) which is freely pivotable between two positions. The shaving apparatus also comprises a trimmer (4), which is movable from a non-driven rest position (17) into a driven operating position (18). In this operating position the shaving head (2) is pivoted away into a locking position (19), in which position the cutter (6) is not driven. The advantage is that all the motor power is available for driving the trimmer.

Abstract: The present invention concerns a footwear intermediate element (11), comprising an element made of natural or synthetic material, said element being positioned inside of a recess machined in a sole body (14) made of natural or synthetic material. Said intermediate element is provided with a plurality of protuberances (12) radially disposed in correspondence of the edge (16) of said intermediate element (11), said prominences (12) engaging correspondent recesses (13) machined in the sole (14) to which the intermediate element (11) is coupled.

Abstract: A sealant for sealing around electrical conductors and/or conduits extending through an opening in a pad into a transformer housing. The sealant includes an insecticide dispersed throughout the sealant to kill the ants or insects attempting to enter the transformer housing through the pad opening.

Abstract: A fuel composition having reduced tendency to discoloration at high temperatures comprises kerosine and/or is a jet fuel, and also comprises a cyclic compound comprising m units of the formula 1a.

Abstract: Composite materials of the invention, which include a gas-tight ceramic, a porous metallic support, and an interfacial zone therebetween eliminate the need for mechanical seals between two such dissimilar materials. Oxygen ion-conducting dense ceramic membranes are formed on a porous metallic alloy to provide an interfacial zone identifiable by a gradient of composition in at least one metallic element across the interfacial zone between the dense ceramic membrane and the porous support. Processes using composite materials in accordance with the invention are, for example, used for production of synthesis gas comprising carbon monoxide and molecular hydrogen, whereby the synthesis gas is, advantageously, free of deleterious and/or inert gaseous diluents such as nitrogen.

Abstract: A window molding is easy to install, and the installed state remains stable and the external appearance is superior, and does not show floating or generate abnormal noise during highspeed cruising and is able to be flush-surfaced easily. The window molding is constituted by: a molding body attached along a space between a window plate and a body panel; a protruding rib protruding from the molding body towards an external surface of the window plate; a leg section extending from the molding body towards the space; a sealing lip extending from the molding body towards an external surface of a body panel; a linking lip extending from the leg section towards the space-forming surface of the body panel and linking with a tip of the sealing lip or in a vicinity of the sealing lip to form a hollow section.

Abstract: A pre-cast concrete form for cast-in-place beams and columns and a method of forming the same. The form includes a form body having a channel through a length thereof and a shear bonding key along the length, the channel being adapted to receive cast-in-place concrete therein to form a beam or column. The shear bonding key is integrally formed in the body and has a grooved portion and a ribbed portion for bonding the cast-in-place concrete to the form body. The form body may further include a reinforcing stirrup tie cast therein and extending into the channel, adapted to secure the form body to an opposed form body. The form body may include a plurality of shear bonding keys and reinforcing stirrup ties spaced apart along the length thereof.

Abstract: The oxygen-absorbing package of the present invention is produced by packaging an oxygen-absorbing composition comprising, as an effective component, an iron powder containing a fine iron powder passing through a 200-mesh standard sieve in an amount of 5% by weight or less by an air-permeable packaging material using an automatic filling-packaging machine. By using the above oxygen-absorbing composition, the iron powder is prevented from being partially scattered to attach to the outer surface of the oxygen-absorbing package during the industrial packaging operation using the automatic filling-packaging machine of high productivity, thereby enabling to obtain an oxygen-absorbing package capable of preserving products for a long period of time without contamination and color change during the storage.

Abstract: An integrated large round baler and wrapping device has a baling chamber defined by separate upper and lower housing sections, which meet at a substantially horizontal plane. The upper housing section is mounted for being elevated and guided vertically relative to the lower housing section such that a gap of substantially equal height is formed between the bottom of the upper housing section and the horizontal plane. A bale wrapping arrangement is provided for wrapping, with plastic foil or sheet or the like, the entire surface a bale located the baling chamber when the upper housing section is elevated. The lower housing section includes a bale-supporting roller section which is mounted for downward movement so as to discharge a wrapped bale.

Abstract: A feeding and picking device having a rotating feeding device that is rotated about a vertical axis. The device is able to work in fields not planted in rows and is designed to grasp plant stalks and feed them into a picking device. The picking device comprises a snapping channel formed by snapping bars under which is located at least one snapping roll. The feeding device comprises a disc having fingers that overlap the snapping channel. The feeding device is therefore designed to transport the plant throughout the effective length of the picking device.

Abstract: A self-propelled forage harvester is equipped with a header including intake and plucking arrangements which, in the case of corn, separate the ears from the stalk and conveys them in different streams to the harvester. The harvester has a conventional cutter drum that receives the stalks and cuts them into short lengths, and has a hammermill which receives the corn ears and chops them into small pieces. The corn stalk pieces and the chopped ears can be recombined and discharged from the harvester into a trailer as whole plant silage, or can be delivered in separate streams to separate trailers or separate containers of the same trailer.

Abstract: A mowing arrangement includes a tractor carrying a front-mounted mower unit and towing a mobile carrier frame having left and right mower units mounted to opposite sides of the carrier frame. In a first embodiment, the carrier frame is box-shaped in plan view. A pair of mower unit support arms are respectively mounted to forward outer locations of the carrier frame for pivoting vertically between horizontal first positions, wherein they dispose the mower units in respective operating positions, and vertical second positions, wherein they dispose the mower units in raised transport positions.

Abstract: A reel for harvesters of the type including a leading platform with crop cutters and cut-plant collectors and conveyors, the reel comprising a plurality of parallel cross bars rotating around a driving shaft, the bars being driven by end transmission bands at respective ends of the reel, the bands running over wheels arranged in a desired manner to define a desired close path.

Abstract: A method for the pneumatic splicing of threads or yarns containing an elastomer comprises, in sequence, at least the following phases: introduction in a splicing chamber (11), belonging to a splicing device (10, 10a, 10b, 10c), of the ends of the threads (12, 15) to be spliced together; a first input of one or more jets of compressed air into the splicing chamber (11) to perform a first interlacing of the threads (12, 15); cutting of the ends of the threads (12, 15), with scissors (18, 19), after the first input of air; a second input of one or more jets of compressed air into the splicing chamber (11) to complete the splicing of the cut ends of the threads (12, 15) and release of the spliced thread with the return of all the parts of the splicing device (10, 10a, 10b, 10c) to their original position.

Abstract: The present invention relates to a gas turbine generator plant in which, by forming auxiliary equipment, comprising a starter, a lubricating oil device, a control oil device, and a lubricating oil main tank, into a unit, this may be disposed within a building in a unitary manner with a generator and a gas turbine unit.

Abstract: A combined cycle power plant is disclosed, which has a backup function operating during the normal operation as well as when the plant is activated, so as to reliably maintain the steam cooling operation when an abnormal phenomenon occurs. In this power plant, the cool steam of the steam cooling system for cooling a high-temperature portion of the gas turbine is the high-pressure exhaust gas of the high-pressure turbine. When the exhaust gas is unexpectedly insufficient, high or medium-pressure steam output from the exhaust heat recovery boiler is introduced as cool steam into the steam cooling system, thereby reliably continuing the steam cooling operation.

Abstract: A rocket engine nozzle with an outlet portion having a curved profile in axial section. In order to control the flow separation occurring within the nozzle outlet, the radius of the outlet portion, in axial section, varies circumferentially in length.

Abstract: An exhaust emission control system capable of enhancing a purging performance by increasing a catalyst temperature rising speed (warm-up speed) after starting the internal combustion engine, includes a box body formed with an exhaust gas inlet and an exhaust gas outlet, a catalyst support incorporated into the box body, and a catalyst substance supported on the catalyst support. A part of the catalyst support of the exhaust gas purging catalyst is a low resistance area formed so that a gas flow resistance is lower than in other areas. The low resistance area is disposed in such a position that a flow velocity of the exhaust gas flowing to the catalyst support is high. A temperature rising speed in the low resistance area is increased, and a temperature rising characteristic is further enhanced with this low resistance area serving as a high density support area for supporting a larger quantity of a catalyst substance such as platinum etc than in other areas.

Abstract: An oil passageway 102 for supplying oil to a torque converter 30 having a pump impeller, a turbine rubber and a stator 33, or removing it therefrom is formed between the shaft member 41 of a stator shaft 40 and the boss portion 42a of its flange member 42 and extends along a transmission input shaft 20, while a pump impeller boss member 31a has an outer periphery supported rotatably by a bearing 12. The boss portion 42a of the flange member 42 has its end facing the pump impeller boss member 31a and situated closer to the stator 33 than that portion of the pump impeller boss member 31a which is supported by the bearing is situated, and the oil passageway 102 has its openings 40b and 40c situated closer to the stator 33 than that portion of the pump impeller boss member 31a which is supported by the bearing is.

Abstract: A method of generating electrical power utilizing a gas distribution network comprised of a high pressure gas reservoir and a low pressure delivery pipeline includes the step of directing at least a portion of the high pressure gas within the reservoir through a satellite assembly to generate electrical power. The satellite assembly includes an expander and shaft, an electrical generator operatively associated with the shaft and control members for predeterminely controlling the temperature, the pressure drop and the flow of the compressed gas entering the expander from the high pressure reservoir to the low pressure reservoir.

Abstract: A refrigerated display cabinet (10) has a chamber (12) accessible via the doors (12) of the cabinet. The bottommost shelf (16) in the chamber is a substantially imperforate shelf which is spaced from the bottom wall (17) of the chamber to form a duct-like passage through which air is drawn by a fan (15). The air is directed past an evaporator (17) of a refrigerating mechanism so as to be cooled. The cooled air is recirculated into the chamber (12) by passing it through apertures in a perforate inclined rear internal wall (18) of the chamber. The remainder of the cooled air is directed downwardly through openings (24) at the top of the chamber past the front of the shelves.

Abstract: The method and system disclosed in the publication relates to an improvement in measurement accuracy of a gas concentration sensor (1) such as capacitive humidity sensor (1), the method comprising the steps of measuring a parameter of the sensor (1), such as its resistance or capacitance, that is sensitive to the gas or its concentration being measured, and simultaneously changing the temperature of the sensor (1) in a cyclic manner. According to the invention, the parameter of the sensor (1) being measured is measured at least essentially continuously, at least N times during each heating cycle, the measured parameter value is filtered to obtain a signal component associated with the fundamental frequency of the heating cycle for use at a later step, and the thus filtered signal component is used in the correction and/or calibration of actual output signal of the sensor.

Abstract: A gear-shift mechanism for a gear transmission in which a shift-and-select lever on a changeover shaft is loaded by a compression spring assembled therewith toward an initial position where the shift-and-select lever is brought into engagement with a shift head for 1st-2nd speeds for selectively establishing first or second speed gear train, and in which in the occurrence of a failure in any one of a selection-stroke sensor and a shift-stroke sensor, a second actuator is deactivated under control of an electric controller to permit free movement of the changeover shaft in an axial direction and a second actuator is activated under control of the electric controller to effect rotary movement of the changeover shaft so that the shift-and-select lever is moved to the initial position under the load of the compression spring and brought into engagement with the shift head to establish first or second speed gear train.

Abstract: A steering wheel includes a ring, a plurality of spokes extending from the ring toward the middle of the steering wheel, and a pad encompassed by the ring. An accessory panel having a switch is secured to the spokes. A support member supports the accessory panel with respect to the spokes. A fastening member fastens the accessory panel to the spokes. The support member is located separately from the fastening member.

Abstract: A wrench head member has an attachment extension which allows the user to attach the wrench head member to a handle. The extension is a collar extending from the side of the wrench head member and having one or two holes extending through the sidewall of a hollowed section. The hollowed section is configured to engage a standard socket extension. Alternately, the wrench head member may have a post which engages a hollow within a handle member. The wrench head member may be a part of a wrench system or kit. The wrench head member has an attachment extension which allows the user to attach the wrench head member to a handle, preferably a socket extension. The attachment between the handle and the wrench head member is a male/female connection. Preferably, the wrench head is the female member having a collar extending from the side of the wrench head and having a pair of holes extending through the sidewall of the collar for the locking ball and release button on a socket extension.

Abstract: A pipe wrench is provided having a elongated housing, a motor disposed within the housing, and a pipe attachment structure connected to the housing. A rotatable shaft extends from within the housing, transverse to the axis of the housing, and is rotated by the motor. A pair of drive rollers are mounted on the shaft. The pipe wrench further includes a support structure on the housing, a curved retaining arm pivotally mounted on the support structure, and a plurality of free-spinning rollers mounted on the retaining arm. In use, a pipe is placed within the retaining arm in contact with the free-spinning rollers and the handle is moved to bring the drive rollers into contact with the pipe. The motor causes the shaft to rotate which then rotates the pipe.

Abstract: The present invention eases possible rubbing between an upper cutting edge and a work cutting surface during the elevation of the upper cutting edge to prevent the upper cutting edge from being worn in order to increase its lifetime. In a device for cutting a work by elevating and lowering a movable upper cutting edge 12 relative to a fixed lower cutting edge 13, an upper-cutting-edge tight-contact avoidance means 41 is provided for widening the clearance between the upper cutting edge 12 and a work cutting surface. The means 41 is comprised of a clearance adjustment mechanism 22 for adjusting the clearance between the upper cutting edge 12 and the lower cutting edge 13, and control means 35 for the clearance adjustment mechanism 22.

Abstract: The invention relates to a device for the advance of a belt-saw blade by a setting width of a setting machine. In order to prevent damage on the tooth face and the cutter of belt-saw blades, the advance is effected by a roller drive, wherein the belt-saw blade is arranged with a friction fit between a roller and a counter roller and the roller drive comprises a path measurement device.

Abstract: The invention relates to a device for setting saw blades or belt-saw blades with clamping jaws arranged on both sides of the saw blade or belt-saw blade and with setting tools arranged on both sides and pivotable about an imaginary axis. It is the object of the invention to put forward a new device with which the setting result may be improved. According to the invention the object is achieved in that in horizontally displaceably mounted guiding blocks arranged on both sides of the saw blade or belt-saw blade there is pivotably mounted in each case a setting tool mounting formed as circle segment, wherein the guiding block is designed simultaneously as a clamping jaw for fixing the saw blade or belt-saw blade, and that displacement devices are provided for the horizontal displacement of the guiding blocks.

Abstract: A transducer includes a linear input power source (12) connected to a connecting rod (24) in turn connected to output drive shafts (30 & 36) through one-way clutches (28 & 40), with the output drive shafts being interconnected through gears (32 & 40) such that when one shaft is powered, the other is coasting. The power source includes multiple stern powered cylinders (16 & 94). Inlet and outlet valves (44) for each cylinder chamber are controlled by an actuator (56) which instantaneously snaps the valves between open and closed positions. The power cylinders (16 & 94) may be operated individually, in parallel or in series and as required, a valve passageway through the piston (18) may be operated to equalize pressure. A pair of O-rings (121) on the piston (18) engage the cylinder wall only when the adjacent chamber is pressurized, thereby reducing drag in operation of the piston.

Abstract: A piston-type compressor has several cylinder bores, each of which receives a piston assembly. The piston assembly reciprocates between a top dead center and a botom dead center in each cylinder bores. The piston assembly includes a piston and a piston ring. A groove is formed at or about a top dead center of an outer peripheral surface of the piston, and having a flat bottom surface thereof. The piston ring, which has a truncated cone-shape and may be made of resin, is fitted into the groove. An external diameter of the piston ring is greater than that of the piston. The piston ring is disposed in the groove, such that the wider edge of the ring opens toward a bottom dead center of the piston and a narrower edge of the piston ring abuts the bottom surface of the groove.

Abstract: This installation comprises subgroups of permeators (SG1 to SG3), each subgroup comprising a permeator (4A to 4C) or several permeators mounted in parallel, and having an inlet (12A to 12C), a permeate outlet (14A to 14C) and a non-permeate outlet (16A to 16C). The non-permeate outlet of a first subgroup (SG1, SG2) is connected to the inlet of a second subgroup (SG2, SG3), and at least one of the subgroups has closure means (22A to 22C) for its permeate outlet when the real feed flow rate is below the nominal feed flow rate by a predetermined quantity.

Abstract: An installation for coating food products with a fine pulverulent material, such as flour or breadcrumbs, comprises an endless conveyor belt which allows the pulverulent material to pass through and has a top part and a bottom part, means for forming a layer of pulverulent material on a portion of the top part on which the products can be accommodated and can be moved in the direction of transport, as well as means for applying a layer of pulverulent material on the products present on the top part, which means comprise a container having a discharge for the pulverulent material, as well as distribution means which allow the pulverulent material to pass through, for uniformly distributing the pulverulent material over the width of the top part.

Abstract: A wooden rail for a ride, in particular for a roller coaster, comprising a number of layers of individual planks/boards, laminated veneer wood or presspahn wood, bonded with each other and milled to the precise rail form in accordance with the roller coaster design. Furthermore, the invention refers to a method for the fabrication of such a wooden rail, wherein the layers are bonded with each other to form a wood package in oversize and wherein, after hardening, the bonded wood package is given the precise rail form in accordance with the design of the ride by means of machining. Finally, the invention also refers to a method for mounting such a wooden rail on a rail support, fixed to a trestle of the ride, wherein the finished rails, particularly those provided with steel sheets, rail joints and connection elements, are secured to said rail support.

Abstract: The invention provides a water-based metallic ink composition comprising a metallic powder pigment and a solvent characterized by its further comprising a polyvinyl alcohol. This composition provides a record consisting of a central line derived from a formulated colorant or the color of the writing substrate and contour lines derived from the metallic powder pigment and bordering on both sides of the central line.

Abstract: Various modified pigment products are described which are preferably capable of being dispersed in a variety of materials such as coatings, inks, toners, films, plastics, polymers, elastomers, and the like. The modified pigments are pigments having attached groups, such as polymeric groups, onto the pigment by means other than adsorption.

Abstract: A utility desk for home or office use comprises a work surface supported by a plurality of legs. The back of the work surface is formed with a first vertical member depending therefrom. The first vertical member is joined to a back by a bridge member. The first vertical member, bridge member and back together form a cable channel dimensioned to receive electrical cables attached to electrical devices positioned on top of the desk. In a preferred embodiment, the back extends above the plane defined by the top of the work surface and includes a window formed therethrough. A shade is adjustably drawn over the window to provide additional privacy. A shelf extends horizontally from the top of the back to provide an additional worksurface. The desk may be fitted with a return rotatably attached to a front leg which can be rotated under the work surface when not in use.

Abstract: The invention provides a boiler provided with low cost means which can reduce a concentration of CO, an unburned matter, an attached ash and the like near a side wall and maintain a combustion state well with a simple structure. In a boiler having a combustion chamber 13 formed by front and rear walls (burner walls) provided with a plural stages of burners 2, 3 and 4 on at least one of them and opposing to each other, and side walls 1a and 1b crossing to said burner walls 14a and 14b, a gas port 6 containing no fuel for making a pressure of a gas near said side walls 1a and 1b within said combustion chamber 13 higher than a pressure of a gas at a center portion of said combustion chamber 13 is provided between an outermost burner and the side walls 1a and 1b within a range of a height of said burner stages 2, 3 and 4. A combustion gas 16 can not come close to the side walls 1a and 1b due to the jet 18 of the gas.