Abstract: A portable polishing unit for dental instruments is characterized by comprising a base member; a motor mounted thereon and driven by a dry cell; a rotary grindstone assembly fixed to the motor through a grindstone rod of a round shape and including a grindstone disc positioned in opposition to the motor, having a diameter larger than that of the grindstone rod and planar on its end face; a supporting member mounted on the base member at a position adjacent to the side of the grindstone disc which does not face the motor, and having a plane face extending in parallel with the upper face of the base member and having a length larger than the diameter of the grindstone disc; and a supporting plate mounted on the base member in the vicinity of the side edge of the supporting member, the supporting plate including a groove for supporting the root of working means extending from a grip of a dental instrument.

Abstract: A numerically controlled grinding machine provided with an angular type grinding wheel and a numerical controller for controlling the feed of grinding wheel based upon a control signal from a measuring head which measures the diameter of a cylindrical side of a workpiece. The grinding wheel is moved along an inclined path to grind the cylindrical side and a radially inner portion of the shoulder of the workpiece, simultaneously. In response to the control signal from the measuring head, the feeding of the grinding wheel is stopped. Then, the numerical controller detects the difference between a target position and a actual position of the grinding wheel along an axis of a work spindle. Further, the numerical controller compensates another target position to grind the radially outer portion of the shoulder for the difference. Thereafter, the grinding wheel is moved to the compensated target position so as to grind the radially outer portion of the shoulder.

Abstract: A support for a grinding wheel or other rotary element use for conditioning workpieces, has the wheel arbor supported upon vertically shiftable support members, so that the distance between the lowermost, work engaging area of the wheel can be adjusted in respect to an underlying platen. In one form, slide blocks carry rotary idlers in tangential contact with diametrically opposite areas of the wheel, to sense wear of the wheel's periphery. As the wheel wears, the slide blocks gravitate to lower positions, to cause the wheel to be vertically adjusted downwardly to an extent that will maintain the distance between the bottom of the grinding wheel and the platen at a constant value. In a second form, an idler actuates an assemblage of links and levers that include the support members, to effect the downward vertical adjustment of the wheel.

Abstract: A process and apparatus is described for recovering and cleaning for reuse a lightweight blast media typically a polymeric material that is employed as a gas and entrained abrasive for cleaning workpiece surfaces of dirt, corrosion scale, paint or the like. The process involves reentraining the contaminated abrasive material in a gas stream from the worksite. The entrained material was directed in to a separator which separates the abrasives and heavier contaminants from the gas stream by impinging onto a target. Heavier material cascades from the target into the separator collection zone while the lightweight contaminants are swept from the separation zone by means of a vacuum system. The contaminated abrasive media is further cleaned by separating blast media of acceptable size from oversize and finer contaminants, by means of triple screening. The blast media, subjected to a series of separators, achieves a finished product having a 3-5% contaminant content.

Abstract: A double-glazing assembly suitable for horticultural and agricultural growing houses comprises two flexible light-transmitting thermoplastics film, especially polyethylene terephthalate films, separated by a spacing framework. Means are provided to evacuate the enclosure between the sheets during the day-time thereby improving the light transmission of the assembly. The assembly is also preferably provided with means for inflation to optimise the conservation of thermal energy during the night-time.

Abstract: The present invention relates to a light and climate control system for pre-stressed fabric structures of the type having a plurality of arches and fabric under tension extending between adjacent to enclose a space. The fabric between the arches is composed of zones of exteriorly reflective opaque material and translucent material. The respective areas of the zones of these two materials are determined such that the zone of translucent material is of sufficient area to permit enough light to pass to the enclosed space during daylight, for adequate interior lighting of the enclosed space. The zone of reflective opaque material is of sufficient area to reduce solar radiation into the enclosed space to a degree which permits the air conditioner means to comfortably cool the interior.

Abstract: A fixing bracket 5 in a roof construction is a metal sheet with two parallel grooves 39, 40 pressed therein to protrude as ribs from the other side of the sheet. each groove extending from one edge of the sheet to another with two straight end portions and a central part-circular central portion. The outer edge of the sheet is concentrically part-circular and the inner edge is folded up at 38. Such a bracket, or a pair of such brackets back-to-back with grooves 39, 40 protruding, can connect cold-rolled channels 1,2 e.g. as used for the uprights or rafters of a portal frame structure, with compatible longitudinal base grooves. The channels are again usually used in back-to-back pairs and the brackets are bolted within these back-to-back pairs of channels. The included angle can be from 90.degree.-135.degree. for eaves brackets, or from 90.degree.-180.degree. for ridge brackets.

Abstract: A dynamic eave building system comprising a flexible joint for first vertical and second angulated structural members pivotally connected one to the other. The adjacent ends of the first and second structural members are mitered into a mating configuration and spaced one from the other by the pivot joint. The pivot joint comprises a pivot pin received through aligned apertures formed in one of the members and in a knee splice secured in the other. The knee splice is positioned to define the flexing space between the mitered ends. The second angulated member also includes moisture collection troughs formed longitudinally therealong. The first member is provided in a hollow configuration for receiving fluid flow from the troughs of the second angulated member. Both members are adapted for securement of conventional curtain wall material, siding or roofing thereon.

Abstract: A suspended ceiling suspended from the structural ceiling of a room, which comprises a plurality of parallel, elongated, snap-bars, each having a pair of longitudinally extending, opposed spring-like arms biased to be closely together, and a plurality of metal ceiling tiles held by snap bars in side-by-side relationship, each said ceiling tile having a planar metal body having opposed sides, opposed ends, top and bottom faces and 90.degree. corners, a pair of spaced tabs at each side projecting from said top face, and a layer of vitreous material on said bottom surface, the tabs of one side of one ceiling tile being held within the same snap-bar as the tabs of the immediately adjacent side of the next adjacent ceiling tile.

Abstract: A method and related apparatus for forming a sluiceway adjacent a wall and cement floor includes a sluiceway form made from a generally rectangular sheet of biodegradable material having a number of generally parallel fold lines to define a plurality of contiguous sluiceway panels disposed inwardly of opposite marginal portions of the sheet which are folded into face-to-face relation with each other to form an elongated sluiceway form having a body portion defined by the sluiceway panels and a tab defined by the marginal portions projecting from the body portion and extending along the entire length of the body portion. The sluiceway is formed by positioning the sluiceway form adjacent the wall with at least a part of the body portion below the level of the grade and the free edge of the tab extending in a generally parallel relation to the grade level. The tab is secured to the wall and the concrete floor is poured with the sluiceway form in position.

Abstract: In a flooring panel, plural blocks are held by a holding member of a flexible material so that one section is formed by at least one block with a space for laying a cable defined between adjacent sections. A cover member overlying these spaces is arranged to present a surface continuous with the upper surface of the blocks to form a flat, top surface of the flooring panel. The flooring panel is in the form of a rectangular modular flooring panel of at least one shape and size. A plurality of cable laying spaces in communication with one another are defined by laying a plurality of such modular flooring panels on a building floor as a function of the amount of cables to be laid. In such a manner, the operation of cable laying and construction of the flooring panels on the permanent building floor may be performed more efficiently while the interaction between the cables of different kinds is minimized.

Abstract: An air duct boot useful for connecting a heating and air conditioning duct to an air register grate to permit air to be circulated into a space to be heated or cooled. The air duct boot includes a housing of right parallelepiped configuration constructed of a synthetic resin. The housing includes an integrally molded top or upper portion which can be quickly and easily removed after the boot is installed in a concrete pad or other foundation structure. A protuberant, generally cylindrical neck portion extends from one side of the housing near its lower end for connection to the duct. The entire air duct boot is molded as an integral unit.

Abstract: Tendon anchorages for aggressive environments. Tendon anchors according to the present invention include forward and rear connection means for fluid-resistant connection to adjacent members to protect the tendon strand from corrosive elements. A fixed anchorage according to the present invention includes a connector connected to the anchor plate rear connection means and the strand sheath in a fluid-resistant relationship and a cap threaded onto the anchor plate forward connection means to form a fluid-resistant connection after the strand has been tensioned. An intermediate anchorage according to the present invention replaces the cap with an adaptor which is threaded onto the anchor plate front connection means. The adaptor not only secures the anchor plate to the structure formed druing pouring of the structure, but also forms a fluid-resistant connection with a second connector which in turn forms a fluid-resistant connection with the strand sheath.

Abstract: A reinforcing frame work for covering structural steel bars of a reinforced concrete structure to be constructed is disclosed herein. The frame work comprises a plurality of frame units connected together and disposed along said structural steel bars, each of said frame units comprising a plurality of spacers extending in the transverse direction of said concrete structure and at least one guide steel bar extending in the longitudinal direction of said concrete structure and having said spacers secured thereto in laterally spaced relationship along the length of the guide steel bar.

Abstract: A wooden suspending ceiling system is disclosed comprising a plurality of parallel wooden runners extending in one direction, and a plurality of parallel wooden cross members supported by the runners and extending in a second direction perpendicular to the runners defining a generally rectangular grid system having a plurality of openings therein. Ceiling panels, lighting fixtures, or air vents are supported by the runners and cross members defining the rectangualr grid system and closing the openings therein. The runners and the cross members have an upper face and a bottom face, with the bottom face being viewable from below. The upper face of both the runner and cross members comprises a central portion with a groove on each side of the central portion, and with a lip outboard of each of the grooves. The inner surface of the lip defines the outer surface of the groove on each side of the central portion, and with a lip outboard of each of the grooves.

Abstract: A structure is provided for placing a brick facing on a supporting structure. The arrangement comprises formed sheets which are each provided with parallel channels into which the facing bricks can be placed. The formed sheets are provided with interlocking edges and are moreover provided with linear arrays of holes covered by tape which has two adhesive faces. One of the faces is exposed in the associated channel. The other face is forced through the associated holes to engage with and adhere with the supporting structure. The bricks are placed into the channels and adhere to the tape. Each channel may be provided with a sub-channel which both strengthens the associated sheet and which morever provides a portion of the channel into which the aforesaid tape may be placed.

Abstract: Method and apparatus, to be utilized by a newspaper carrier on a "vehicle route," for mechanically folding and bagging newspapers and like articles. A continuous length of heat-sealable polymeric film, wider than the newspaper or other article, is arranged along a generally horizontal feed path to form a folding station. The newspaper or like article is fed to the folding station of apparatus in parallel overlying relation to the film. A vertically reciprocal, motorized folder bar extends transversely across and above the film at a point substantially centrally located in the folding station. The folder bar is movable between an upper position above the feed path and a lower position below the feed path where there is formed a pouch of film surrounding the folded newspaper.

Abstract: An apparatus and method for stripping a meat net from a process meat product. The apparatus includes a base which is adapted to support at least one inner tube and one outer tube, with the inner tube including a container for secondarily processed meat goods. The outer tube is attached to the base body and is provided with a device for engaging an open end portion of the meat net. The inner tube is movably (and slideably) mounted within the outer tube so that it can be moved forwardly to the exterior of the base and the outer tube, and rearwardly back into a position within the outer tube.

Abstract: An apparatus for applying caps on containers in which a primary cap-applicator applies the majority of caps and a secondary cap-applicator applies caps to the containers which have passed the primary cap-applicator without having been provided with a cap. A sensing means is arranged downstream of the primary cap-applicator to detect containers without caps and activate the secondary cap-applicator. This sensing means includes a photocell to detect a container and an inductive transducer to detect the cap on the container.

Abstract: An arrangement for preventing clogging of particulate material flowing through a curved section in a tubular duct or chute employs an air manifold operatively associated with the duct or chute and having an elongated discharge orifice positioned to discharge a wall of pressurized air along the internal concave duct surface so as to create positive laminar air flow along the curved surface and prevent stagnation and clogging of the particulate material. In a preferred embodiment, mutually cooperating auxiliary air discharge openings in the manifold and duct effect laminar air flow over other internal surface areas of the duct within the curved section. The anti-clogging arrangement finds particular application in grass mowers and the like wherein clippings tend to clog within curved sections of chutes through which the clippings pass to a receptacle.

Abstract: A false-twist textured yarn composed of a polyamide filament yarn excellent in stretchability and heat durability suitable for sports wear is proposed, which is characterized in that the maximum value F (g) of a shrinkage force under dry heat and a heat treatment temperature T (.degree.C.), at which the maximum value F is attained, are defined by the following equations:0.20D.gtoreq.F.gtoreq.0.08D, andTm>T.gtoreq.Tm-25wherein D is a titre of the textured yarn represented by denier, and Tm is a melt-breakage temperature of the polyamide filament yarn represented by .degree.C., and that the crimp recovery CR is 15% or more. The textured yarn is preferably produced from a preoriented undrawn polyamide filament under a specific false-twist texturing conditions by means of an in-draw texturing machine with a specific yarn guide for facilitating a threading operation.

Abstract: The invention relates to an arrangement for reverse-stranding (SZ-stranding) at least one stranding element of a cable, in particular a stranding element containing a beam waveguide, about a central element, a laying device being arranged between the oscillating lay plate and the fixed lay plate, which laying device takes up and pays out a lay of the stranding element at alternating periods, and comprises a stress controller for evening out the pull-off speed from the supply reel, which is arranged between the fixed lay plate and the supply reel.

Abstract: A process for operation of an approximately horizontal suction duct used for removal of broken fragments of thread or roving from a spinning machine and a suction apparatus for performing that process. In the process of my invention the suction capacity of the suction duct is made adjustable for joint adjustment of the suction at all of the suction intakes connected to it. Thus to reduce energy consumption this suction capacity can be set to a considerably lower value during normal operation than during doffing or batch changing where it is desirable to use the maximum rated suction capacity. The adjusting means for changing the suction capacity of the suction duct comprises advantageously a throttling means such as an automatically controllable plate mounted downstream from the suction intakes of the suction duct or a selector switch for providing different voltages to the winding terminals of an electric motor of an air blower mechanism to directly change the suction capacity.

Abstract: The method of, and apparatus for, producing a yarn uses a friction spinning device comprising a perforated first friction spinning drum and a second friction spinning drum which can also be perforated. Two fiber feed passages project to the first friction spinning drum and are each supplied by opening assemblies which individualize or individually separate the fibers. The fibers are transported toward the first friction spinning drum using a feed air stream in the fiber feed passages. This feed air stream is produced by the first friction spinning drum which is maintained under sub-pressure. Advantageously, the fiber double-feed to the friction spinning drum permits supplying two different fiber types to the same yarn end. Also, different inclinations of the fibers at the friction spinning drum can be obtained by different inclinations of the fiber feed passages in order to produce yarns of different character.

Abstract: The invention relates to an open-end rotor-spinning device with a rotor shaft which is mounted and driven in the wedge-shaped gap between supporting disks and to the free end of which is assigned an axial bearing. A simplified mounting, which also allows the supporting disks to be removed and exchanged while the machine is in operation, is provided because the rotor shaft (1) is mounted at two bearing points, of which one is formed by supporting disks (2, 3) arranged in the vicinity of the spinning rotor (10) and the second is a bearing (5) which absorbs axial and radial forces and which receives the free end (11) of the rotor shaft (1). An increase in the operating speed of the spinning rotor (10) without an increase in the running speed of the drive means (6) is achieved as a result of a reduction of the diameter of the rotor shaft (1) in the region of the drive means.

Abstract: An apparatus for open-end spinning is provided which includes a twisting element for twisting yarn. A yarn withdrawal nozzle is provided downstream from the twisting device in a yarn withdrawal direction. A yarn withdrawal device downstream from the yarn withdrawal nozzle withdraws yarn from the twisting device. A yarn deflection device is provided for deflecting yarn downstream from the yarn withdrawal nozzle. The yarn deflection device includes at least one false-twisting edge. The yarn deflection device includes a first deflection which deflects the yarn in a first direction and at least one additional deflection downstream from the first deflection which deflects the yarn into a direction deviating from the first direction.

Abstract: Heat transfer systems for maintaining a thermal balance between a gas turbine engine and heat generating accessory components of the engine are disclosed. In the embodiment illustrated, heat is removed from the cooling system 48 of an electrical generator 46 and is transferred to the fuel supply system 32 of the engine. In one detailed embodiment, the cooling system 48 is in direct heat transfer communication with the downstream portion 62 of the fuel supply system through a heat exchanger 76 and in indirect heat transfer communication with the upstream portion 60 of the fuel supply system through the fuel recirculation system 42.

Abstract: A gas turbine engine control system operates based upon a synthesized value of a parameter upon loss of the actual measured value of the parameter. To provide smooth engine operation upon switchover to the synthesized parameter a fixed trim is applied to the synthesized parameter which, upon switchover, makes the synthesized parameter equal to the last known measured value of the parameter. Thus, the engine will see no sudden change in operation at the instant of switchover. Thereafter the trimmed synthesized parameter changes in value by the same amount as does the untrimmed synthesized parameter.

Abstract: Firing equipment that can be operated under turbocharge, especially fluidized bed firing equipment for a steam generator. At least two successively arranged air compressors are provided, including a first compressor that is driven by a first turbine, which is disposed on a common shaft with the first compressor, and forms together with the latter a turbocharger, with the energy needed for driving the first compressor being extracted from the flue gas of the turbocharged firing equipment. An air preheater is disposed between the second compressor and the firing equipment, with flue gas being supplied thereto. A second turbine drives the second compressor. At least during turbocharged operation of the firing equipment, the flue gas is conveyed at high temperature first to the second turbine then to the air preheater. An electrical apparatus that is operable at least as a generator is operatively associated with the second compressor and the second turbine.

Abstract: A stern drive marine propulsion system (2) has an inboard engine (4) with an exhaust (6), an outboard drive unit (8) operatively coupled to the engine (4) and separated therefrom by a transom (10) having two exhaust passages (28 and 34) therethrough, and an exhaust control assembly (16) aft of the engine exhaust (6) and forward of the transom (10) and within the boat (12). The assembly (16) has an inlet (18) connected to the engine exhaust (6), and has first and second outlets (22 and 24) communicating with the respective exhaust passages (28 and 34) extending aft through the transom (10). A valve (26) in the assembly (16) selectively controls communication of the inlet (18) with the first outlet (22).

Abstract: In a working vehicle comprising a hydraulic power steering cylinder (25) and hydraulic lift cylinder (31), a novel hydraulic system is employed which comprises first and second flow control valve means (47, 48; 147, 148; 247, 248; 347, 348), each dividing its inflow into two flows. These valve means are connected in a fashion such that output flow of a single pump (43) driven by engine (10) is first divided into two output flows one of which is then divided by the second valve means. Further, one of the output flows of the second valve means is directed towards the steering cylinder whereas the other of output flows of the both valve means are directed towards the lift cylinder.The connection is such that, while a predetermined constant flow is secured for the steering cylinder at the normal engine speeds, a flow is necessarily secured for a relatively quick operation of the lift cylinder already at a low engine speed.

Abstract: An earthmoving machine comprises a first system for moving the machine, a second system for moving a mobile part of the machine, and an actuator device for the first or second system. The actuator device comprises a variable flowrate pump and a mechanism for adjusting the flowrate of the pump. A ram is mechanically coupled to this mechanism, and a hydraulic control circuit controlling the pump comprises a control pressure generator, an actuator member coupled to the generator and a variable ratio pressure divider connected between the generator and the actuator member. The first or second system comprises at least one control member adapted to be actuated by the actuator member when the actuator member has moved a predetermined distance beyond a neutral point.

Abstract: A pulse-actuated hydraulic pump includes a hydraulic chamber with a bellows having a volume increased or decreased by the selective application a force in an axial direction thereof by a piezoelectric actuator. Control means control electrically-driven valves to selective discharge fluid from the bellows in precisely controllable volumes through a first pumping port or a second pumping port.

Abstract: A hydraulic drive system utilizes four hydraulic motors arranged in mechanically coupled pairs with one motor from each pair always series hydraulically connected to one motor from the other pair. The other motors are selectively coupled parallel with each other or in series with the series connected motors. The combination of mechanical and hydraulic coupling provides an efficient drive system designed specifically for, but not limited to, the motor grader apparatus. The improved drive system herein disclosed provides both high speed-low power and low speed-high power operational modes and is capable of continuous operation in either mode. The improved drive system also provides superior control characteristics due to the hydraulic motor series lockup arrangement. The combination of mechanical and hydraulic coupling provides high power with good control or high speed with little heating of the hydraulic fluid.

Abstract: The present invention is a hydraulic transmission comprising a power input shaft, a variable displacement pump connected to and driven by the input shaft, a fixed displacement motor having a motor output shaft, a power take-off shaft, and an intermediate shaft. The intermediate shaft is connected between the power input shaft and the power take-off shaft for transmitting rotational movement directly therebetween. The intermediate shaft also includes first and second bores extending longitudinally therethrough and providing hydraulic connections from the variable displacement pump to the fixed displacement motor so as to permit the pump to drive the motor. Thus, the power input shaft drives the power take-off shaft directly and drives the motor output shaft by virtue of the hydraulic connection between the pump and the motor.

Abstract: Apparatus for recovering kinetic energy bound in the movement of water waves. The apparatus comprises a bouyant unit (2) and an energy-absorbing device connected to the bouyant unit. The energy-absorbing device comprises an immersed rigid piston (6) which is slideably arranged in a substantially vertical, elongate accelerating tube (1) which is intended to be immersed in the water and which is open at both ends thereof. The accelerating tube is connected to the buoyant unit (2) so as to accompany movement of the unit imparted thereto by the wave movement of the water. The working stroke (1) of the piston in the accelerating tube is limited by means of movement-limit means (8,9) incorporated in the accelerating tube and arranged to abrogate the force acting on the piston. In accordance with one suitable embodiment, these movement-limiting means comprise openings (9) arranged in the accelerating tube and co-acting with corresponding openings (8) in the piston (6).

Abstract: A pneumatic-hydraulic booster for vehicle includes a master cylinder part; a pneumatic cylinder part combined with the master cylinder part which includes a power piston slidable fitted to a cylindrical casing and an output rod fixed to the power piston, extending to the master cylinder part; a partition wall body fitted to the cylindrical casing; and a relay valve part arranged at the opposite side of the partition wall body from the power piston in the cylindrical casing. The relay valve supplies compressed air into an air pressure chamber formed between the partition wall body and the power piston and discharges the compressed air from the air pressure chamber to the atmosphere. When compressed air is suppplied into the air pressure chamber through the relay valve part the power piston and the output rod are moved forwards to generate hydraulic pressure in the master cylinder. The hydraulic pressure is applied to a wheel cylinder for braking.

Abstract: In the assembly of a master cylinder and an oil-hydraulic booster connected to the rear thereof, the master cylinder has an axial bore consisting of a forward, small-diameter bore section and a rearward, large-diameter bore section and the master cylinder piston in the master cylinder includes a small-diameter section slidably fitted in the small-diameter bore section of the master cylinder and a large-diameter section slidably fitted in the large-diameter bore section thereof. The forward end portion of the piston in the oil-hydraulic booster is formed smaller in diameter than the large-diameter bore section of the master cylinder and is arranged proximate the large-diameter section of the master cylinder piston in the master cylinder so as to enter the large-diameter bore section of the master cylinder when the booster piston is advanced.

Abstract: In this portless type master cylinder device, a cylinder bore is formed in a body thereof, and a piston member is fitted in the cylinder bore and is slidably movable from an initial axial position therein and defines a pressure chamber in cooperation with the cylinder bore. An intake valve communicates between the cylinder chamber and the fluid reservoir via a fluid flow path, and is opened when the piston member is in its initial axial position while it is closed when the piston member moves through more than a determinate relatively small axial distance from its initial axial position.

Abstract: A method and apparatus for the load-dependent control of a turbocharger which is arranged in an internal combustion engine, a turbocharger includes an adjustable turbine guide apparatus which is adapted to be moved by way of an adjusting drive in the direction closing position or in the direction opening position. In order to be able to keep the response time of the turbocharger minimal during positive load changes with an optimum fuel consumption, the turbine guide apparatus is initially guided along a first predetermined characteristic curve in the direction closing position and subsequently in dependence on the charging pressure increase conditioned on the load increase according to a second predetermined characteristic curve again in the opening direction.

Abstract: A power production system is disclosed. The system includes a firebox, and fluid-containing heat transfer coils at the firebox sides. The heated fluid is conducted to a transducer for converting that heat into mechanical work. In the illustrated embodiment, the transducer includes a piston and cylinder arrangement. A converter is disposed adjacent the firebox to receive heat and the gaseous products of combustion from the firebox. The converter chemically converts the gaseous products of combustion into less objectionable materials.

Abstract: A combustion chamber, such as for a gas turbine engine, includes a protective liner comprised of a plurality of arcuate panels attached to the combustion chamber wall by means of hook-like hangers or lugs integral with and extending radially from the panels through slots in the combustion chamber wall. The lugs hang from retaining strips disposed across a portion of the slots through which the hangers pass. The strips prevent the lugs from being withdrawn from the slots, thereby, positioning the panels radially. Axial and circumferential positioning of the panels is accomplished by means of a close fit between the hangers, slots, and retaining strips. The free floating or nonrigid manner in which the liner panels are attached to the combustion chamber prevents undue stresses from developing in the combustion chamber wall due to the differential thermal growth rates of the combustion chamber wall and the liner panels during engine operation.

Abstract: A cryostat comprising a cryogenic vessel for storing a cryogen therein, a port pipe disposed at a portion of the vessel for holding one end of a supply pipe for supplying the cryogen to the vessel thereby allowing the cryogen to flow into the vessel while the very low temperature liquid cryogen is being supplied from the exterior to the vessel, and a cryogen supply pipe disposed in the vessel so as to be spaced apart from the port pipe, further the cryogen supply pipe having a receiving portion for receiving the cryogen from the supply pipe during the supply of the cryogen.

Abstract: The invention relates to a method for a refrigerant system having a circulation circuit comprising a screw compressor (1), a condenser (4), an expansion valve (5) and an evaporator (6). In a refrigerant process, in which an oil injected compressor is connected it is impossible to prevent oil from flowing together with the refrigerant out into the circulation circuit, which among others impairs the operation of the evaporator. According to the invention a drastic reduction of the amount of circulating oil has been obtained together with an improved cooling of the compressor by supplying the low pressure side of the compressor with refrigerant liquid with a pressure and temperature lower than the pressure and temperature of the refrigerant in the condenser in such amounts per unit of time that the required cooling and sealing of the compressor is obtained, the effect of the circulating oil being restricted merely to lubricating.

Abstract: A mobile mortuary comprising an elongated container defining an interior compartment for cadavers. Cadaver trays are supported in the compartment for movement through an opening in the front wall of the container to an extended position. An evaporator is mounted on the container within the compartment, and a compressor-condenser unit and generator are mounted on the container outside the compartment. The mortuary is mounted on wheels for movement upon a supporting surface.

Abstract: A preheater system for using thermal energy available in a refrigeration cycle to heat potable water disposes a double-walled coil having an internal vent path within a water filled tank. Superheated refrigerant is passed through the coil downwardly between an inlet and an outlet. Liquid condensed within the coil accumulates in the bottom of a trap from which it is forced upwardly into a receiver tank and then returned to the refrigeration system. If excessive cooling develops, a pressure responsive valve shunts incoming superheated gas into the receiver tank to return to the selected operating range.

Abstract: The fan drive motor mount of a room air conditioner is mounted on the base pan with the edge of one U-shaped member fastened directly to the base pan and with the side walls of the other U-shaped member partially overlapping the side walls of the first member and having means to secure the two members in an adjustable manner such that the first and second members can be appropriately spaced so as to accommodate any of various sized motors.

Abstract: A freezer machine wherein ice cream or ice cubes can be selectively prepared by replacement of a removable ice cream-forming container and its associated first stirring element with a removable annular multicell frame assembly and its associated second stirring element. The ice cream-forming container is coupled within a freezing vessel mounted in a box-type cabinet, and the first stirring element is settled in the container to whip the ingredients to be frozen into ice cream. The frame assembly is coupled within the freezing vessel, and the second stirring element is settled in the freezing vessel to stir the water to be frozen into ice cubes within the frame assembly.

Abstract: A subcooling condenser/receiver is provided upstream of and proximate to an expansion device in a refrigeration loop, the condenser/receiver having an inlet for receiving cooled refrigerant, a receiver for accumulating the refrigerant, an integral suction line to subcool the refrigerant, and an outlet for discharging the accumulated refrigerant to the expansion device. Because the suction line is integral to the receiver, the cooled refrigerant is in thermal communication with the spent refrigerant. In order to condense and accumulate refrigerant in the receiver the subcooling condenser/receiver has a flow restricting structure which produces a pressure drop between the subcooling condenser/receiver inlet and the receiver. A liquid seal is formed at the subcooling condenser/receiver in the high pressure line extending from the compressor to the expansion device. This arrangement reduces pressure losses in the high pressure line thus improving the volumetric flow efficiency.

Abstract: A device for the control of a flat-bed knitting machine for the positional determination at lift reversal of the carriage assembly driven by a reversible motor has a phase-shifted pulse generator device on the carriage assembly which can be moved back and forth and a stationary pulse generator board device in the area of the needle bed arrangement. With such a device a reproducible lift reversal can be performed in the area of the ends of the needle bed as well as at any desired location along the needle bed arrangement, the pulse generator board device has a pulse generator board extending along a needle bed of the needle bed arrangement.