Abstract: A door designed for use in conjunction with a gate that covers the end of an enclosed rail car whose sides are sloped at the top, to cover the portion of the car end which lies between the top of the gate and the roof of the car. The top door is supported by members fastened to the roof, which permit the door to be stowed by tipping the bottom of the door outwardly and then sliding it onto the roof. The gate structure has upper ends that lie outside the lower end of the door when the gate is closed, to prevent outward tipping of the door.

Abstract: There is disclosed a cargo restraint for palletized cargo which is detachably secured to rails or frame members such as a conventional seat rail in an aircraft cargo hold. The restraint includes a frame and a folding assembly of a pawl plate member with fore and aft folding support links therefor whereby the pawl plate member can be folded into a retracted position, within the confines of the frame and elevated therefrom into an elevated, cargo pallet engaging position. The pawl plate member extends fore and aft of the support links to restrain the edges of adjacent cargo pallets. The frame is provided with a transverse web immediately forward of the support links to serve as an abutment stop therefor, restraining the links in the extended position and accommodating high acceleration forces in a forward direction. The assembly is provided with a resilient springs to urge it into the retracted position and a locking member secures the assembly in the extended position against the bias of the resilient springs.

Abstract: A folding leg mechanism for a table is adapted to be releasably locked in a firm, stable position as the leg portion thereof is swung down to extended position from retracted position against the underside of the table top. A longitudinal slot extends through at least one side of the leg and has its longitudinal axis in substantial alignment along the leg with the pivot axis about which the leg swings. A pin extends outwardly through the slot and is adapted for movement along the longitudinal axis of the slot. Spring means are provided for biasing the pin toward that end of the leg which is attached to the table. A trackway is positioned at the side of the leg from which the pin extends, so that the pin rides on and along the trackway as the leg swings between its retracted and extended positions. Abutment means are provided with which the leg makes contact when it is moved to its extended position.

Abstract: A collapsible table and seat assembly is provided and comprises a housing having a hollow interior and preferably rectangular in cross-sectional shape. A foldable tabletop is contained within the housing interior which can be extended out through the top of the housing and unfolded. After unfolding the tabletop, the housing forms a base for the tabletop and supports it in an elevated and substantially horizontal orientation. In addition, a seat is formed in each sidewall of the housing which can be pivotally extended from the housing underneath the tabletop.

Abstract: An apparatus for providing total combustion of burnable waste materials and which includes a housing mounted upon a series of wheels that furnishes it with portability, the housing forming a firebox having a pair of upper and lower combustion chambers therein, a pair of feed chutes for feeding the combustion chambers, respectively, a closure means pivotally connecting to the housing and providing for coverage of the feed chutes and entrance into the combustion chambers during apparatus operation, a flue connecting to the housing, above the combustion chambers, and extending partially into the upper or secondary combustion chamber, an exhaust stack provided upon said flue, said exhaust stack including a series of cylindrical sections, being of different diametric sizes, with the sections of greater diameter partially lapping and extending above the sections of lesser diameter therebelow, and a truncated shaped stack section connecting upon the uppermost cylindrical section for exhausting the gases of combustio

Abstract: A device for the removal of flexible workpieces which are draped over a workpiece holding arm and which hang downwardly from each side thereof, in particular, over a work-handling arm of an arm-down sewing machine, comprises a horizontally disposed carrying arm or rod which is adapted to receive the sewn material and support it so that portions hang downwardly from each side thereof. A material engagement clip, which has a pair of clamping arms arranged below the carrying arm, is mounted for movement in directions substantially parallel to the carrying arm in order to move the clamping arms on respective sides of the workpiece and subsequently to move the clamping arms together so that they clamp the workpiece and strip the workpiece from the carrying arm when the clamping arms are moved outwardly from the carrying arm.

Abstract: The sewing machine includes respective setting members for adjusting the overstitch width and the stitch length, with the setting members being adjusted by an actuating mechanism responsive to control signals of a program control system, the control signals corresponding to the stitches to be made. The power for driving the actuating mechanism is derived from the continuously operating main shaft of the sewing machine, through a clutch or clutches whose moment to be transmitted is controllable, such as electromagnetic clutches. In one embodiment of the invention, a single electromagnetic clutch is provided for each setting member and includes a first clutch disk connected to the respective setting member to rotate therewith and a second clutch disk secured to a shaft continuously rotated by the main shaft of the machine. A spiral spring is provided to act to rotate the respective setting member in a direction opposite to the direction of rotation thereof by the associated clutch.

Abstract: Means are disclosed for permitting entry of operator selected stitch points in a switch array which exceeds the capacity of the switch array. In a switch array for a programmable memory of a sewing machine, the columns of switches are representative of the needle position and the rows of switches are representative of fabric position determined by accumulation of feed increments. Each required feed increment is determined by the change of the present stitch position coordinate for feed over the just prior stitch position coordinate for feed. In order to provide for feed increments in the forward direction beyond the number of rows provided, an artificial signal is generated for the just prior stitch position coordinate for feed representative of the first row of switches. To provide for feed increment in the reverse direction, an artificial signal is generated for the just prior stitch position representative of the last row of switches.

Abstract: A sewing machine has a housing with a needle supported therein for reciprocation upon rotation of a main shaft to move the needle into and out of engagement with a workpiece which is fed by a feed mechanism which is driven from the main shaft. The feed means is such that the material is moved in a plurality of steps while the needle is out of engagement with the workpiece. The feed includes a workpiece support arm which has one end which is pivoted on a slide drive for effecting back and forward movement of the workpiece support arm which includes a feed dog engagement part which engages the workpiece to advance it. An eccentric portion driven from the main shaft provides for the upward and downward movement of the support arm.

Abstract: An improved method and apparatus for venting hydrocarbon gases from the cargo compartments of a tanker vessel for the transportation of oil in water, which tanker vessel includes a hull comprising a bottom and sides, a top deck, a plurality of watertight cargo compartments disposed in the hull between the top deck and the hull bottom for receiving the oil, and vent means coupled to each of the cargo compartments and communicative externally of the compartments for venting hydrocarbon gases to and from the cargo compartments and the atmosphere during loading, discharge and transfer of oil and ballast from the compartments.

Abstract: A traveler assembly adapted to hold a line under tension while being movable on a track as on a sailing craft. The assembly comprises a main car section having parallel, spaced apart side portions and a connecting portion with apparatus to retain the line under tension. Fixed to the inner surface of each side portion is a generally oval shaped race filled with ball bearings specifically sized and positioned to be located close to but having some clearance with the surfaces of the track. At any lead angle of tension force applied to the main car section at least some of the ball bearings of either one or both races will contact and transmit the main tension forces to the track so that the traveler assembly can move along the track with a minimum of friction.

Abstract: A nautical boat mooring apparatus which includes a rigid open-ended tubular member which forms a longitudinal open-ended chamber therein, a piston assembly providing a piston slideably positionable within the longitudinal open-ended chamber and a rod portion, the rod portion being extensible out of one end of the longitudinal chamber, a first spring for urging the piston toward the second end of the tubular member, a second spring for urging the piston toward the first end of the tubular member, a first coupling device for removably affixing the first end of the tubular member to a supporting surface, and a second device for removably affixing another portion of the piston assembly to a nautical vessel. Both coupling devices employ ball and socket arrangements to permit the apparatus to accommodate yaw, roll and pitch of the vessel.

Abstract: A bird spook for frightening unwanted birds and other pests from a designated area such as a building, crop field, etc. The spook comprises a thin disc-like plate having at least one light reflecting surface suspended from a supporting arm by a swivel connection. The supporting arm may be attached to any surface of a building by an adjustable support bracket which enables the arm to assume any angle with respect to the building surface to insure freedom of movement of the reflecting plate. Alternatively, the supporting arm is made vertically adjustable for varying the height of the reflecting plate above the ground in crop field protecting installations. Air movements cause the plate to oscillate producing random light reflections annoying to birds and other pests.

Abstract: An emergency distress signal device for use on vehicles and the like having a semi-adaptable magnetic base member and a telescopic mast whose base is secured within said base member. The mast has a semi-circular, fixed loop at its peak for attachment of a flag. A flexible flag of a generally rectangular shape has a grommet on its upper and lower interior corners. A wire loop running through the upper grommet and the fixed semi-circular loop attaches the flag to the upper end of the mast. A second wire loop passing through the lower grommet and around the mast serves to fully secure the flag to the mast and permits the mast to be telescoped inwardly and outwardly without removing the flag. When the mast is fully retracted, the flag may be folded and wrapped around the short segment of the mast remaining above the base member, thus providing a very compact device for storage in a convenient pouch.

Abstract: A thaw-indicating device that is visibly positioned in a package of frozen food so to warn a consumer if the food item has ever been subjected to being thawed, and thus being spoiled even if refrozen subsequently; the device consisting of a transparent plastic capsule having a sealed singular compartment in one end of which there is a colorless, clear, frozen ice and in the other end of which there is a powdered dye that is soluble in water, so that if the ice melts into water due to thawing temperatures the entire interior of the capsule is visibly colored.

Abstract: A contact heat fixing apparatus comprising heat roll 1 having metal core 3 coated with heat resistant toner releasing material 4 on the surface thereof and provided with a heating element to the inside thereof. Temperature control circuit A comprising detection circuit 15 for the detection of the surface temperature of heat roll 1, comparison circuit 16 for comparing the level of a signal issued from said detection circuit 15 with that of a reference signal, pulse generation circuit 17 for converting the signal produced from said comparison circuit 16 into a pulse and an alternating current power source 12 whose electric power to be supplied to said heating element 11 is controlled by the signal from said pulse generation circuit, and switching circuit B for applying, to said temperature control circuit A, control signals which control the surface temperature of said heat roll 1 to set temperature T.sub.1 during a copy stand-by period, to set temperature T.sub.2 lower than said set temperature T.sub.

Abstract: The apparatus includes a horizontal receiving substrate having a resilient gasket extending over the top surface in a closed figure and spaced from the edge of the substrate. A movable cover member including an inverted shallow chamber is provided with a matching resilient gasket on the underside. Vacuum means are connected to the cover. Means are provided for moving the transport cover and substrate into opposing positions so that a porous panel is clamped with between the cover and the substrate gaskets to seal off the major surface portions of the top and bottom faces of the panel while leaving a peripheral region, including the edge, exposed. A tank containing a fluid medium is arranged to move up and around the substrate so that the fluid medium in the tank contacts the surface of the peripheral region of the panel to achieve impregnation. A vacuum is drawn on the cover chamber so that the fluid medium is drawn into the peripheral regions of the panel.

Abstract: Coating apparatus for coating an article by successive strokes of a coating applicator transverse to the direction of relative movement of the article includes an opto-electrical transducer such as a television camera arranged to view in one vertical window the applicator during its stroke and in a second spaced vertical window an area of the article to be coated, means being provided to store information obtained during a scan of the second vertical window indicating regions of the article to be coated and control means arranged to control operation of the applicator in dependence on the detected portion of the applicator in the first window and the information stored from a previous scan of the corresponding region of the article through the second window.

Abstract: A die coating apparatus for applying coating solution onto materials such as wires. The apparatus includes a radial bearing in a position adjacent and prior to a floating die with respect to the advancing direction of the material to be coated, so that the material to be coated after having passed through the coating solution is passed through the radial bearing before advancing into the floating die. Thus, the undesirable lateral vibration of the material to be coated at the floating die is prevented and a coating film of uniform thickness is obtained on the material to be coated.

Abstract: A developing apparatus for developing a latent image, particularly an electrostatically generated latent image on a drum type carrier in a copying machine, wherein a magnet drum carrying a developer powder brush rotates relative to the carrier in close proximity thereof, the feed means for supplying developer powder to the magnet drum including a hollow cone-type pump for throwing developer powder onto an inclined baffle sheet extending toward a bottom portion of the periphery of the magnet drum.

Abstract: Pelagic species of game fish, such as marlin and tuna, are raised from an embryonic, or larval, stage to a juvenile stage by a process and apparatus employing a biologically closed, physically open system. The system is kept biologically closed by first filtering and sterilizing sea water and then growing nutrients for the fish therein. The system is kept physically open by flowing a constant fresh source of sea water through the system to carry nutrient to the fish and to carry waste products out.

Abstract: This invention is a filtration and aeration apparatus which comprises (a) an elongated tubular member which is closed at its lower end, open at the opposite end, and provided at its lower portion with a plurality of passages which extend through the longitudinal wall of the tubular member and (b) an air delivery means for supplying air to the interior of said tubular member at a point at or slightly below the lowermost level of said passages so that the air is discharged parallel to the length of said tubular member in the interior of said tubular member. Another aspect of this invention is a unique air delivery means which comprises an air tube connected to and extending into a chamber designed to allow air to escape from said chamber through passages in the chamber walls so that the air is discharged through said chamber wall passages in a direction opposite from the direction said air is delivered to said chamber through said air tube.

Abstract: This invention relates to a device whereby entry into the feed pan area of a bird feeder is limited to birds of a desired maximum size by means of adjusting the distance between a protective hood and the rim of a feed pan of the bird feeder. Access to the feed area is further limited by making the feed column of the feeder of such a height as to deny squirrels and other marauders a gripping purchase on the top of the feeder while they attempt to reach around the protective hood. In the preferred bird feeder a cylindrical feed column dispenses feed into a pan fixed relative to the bottom of the feed column. An adjustable height conical hood is positioned over the feed pan. Access to the feed in the feed pan is gained by birds passing between the rim of the feed pan and the hood. The maximum size of the bird which may gain access to the feed pan is determined by the distance set between the rim of the feed pan and the hood.

Abstract: A self-locking anchor stake to which an animal may be tethered, comprising a first member having a tethering or hitching ring or pin thereon, a second stake member attached to the first member and adapted for driving into the earth to position the first member, and a pair of third members hingedly attached to the first member and having stake portions, each describing an arc of a circle with its center at the hinge connection of the third member to the first member. The second member is driven into the ground. The stake portion of each third member is then driven into the ground and crosses the plane of the second member to grip the earth between the second member and the stake portion of each third member and to lock the anchor stake firmly in position in the earth.

Abstract: A grazing regulator is mountable to the head of a grazing animal to automatically prevent the animal from eating short grass, while allowing the animal to graze on taller grass. The regulator includes a rigid frame that is mounted on the animal's head where it pivotably mounts a pair of rocker arms. A grazing plate is fixed to the lower ends of the rocker arms and is pivotable in unison with the arms between an operative position where the plate substantially overlaps the animal's mouth to prevent eating, and an inoperative position wherein the plate is pivoted clear of the animal's mouth. Movement of the plate between these positions is effected by an actuator rod slidably mounted to the framework. A lower end of the actuator rod protrudes below the grazing plate to engage the ground and slide upwardly as the animal moves its head toward the ground surface. The upper end of the rod is connected to an upper end of the rocker arm. It causes pivotal movement of the rocker arm and grazing plate.

Abstract: A bag for pets, particularly dogs, is made of impervious flexible material. A slide closure opening at the top allows the pet to be placed in the bag. Closure is by the slide fastener at the top and draw strings at the four terminal ends of the legs and around the neck of the pet leaving the head and paws exposed. Through appropriately positioned nozzle conduits the spray is introduced into the bag. Deflectors at the end of each nozzle conduit prevent direct contact of the induced spray on the skin of the pet within the bag. Absorbent pads or discs at the conduits receive and retain any droplets of spray for later evaporative release.

Abstract: The forced-flow steam generator is provided with a control means for controlling the amount of water fed to the evaporator. The control means includes a controller which receives a load-dependent signal and an actual value signal from a temperature measuring means. The steam generator includes an injection line which communicates at a point downstream of the temperature measuring means. The controller may be connected directly to a valve in the injection line in order to regulate the amount of water which is bypassed around the evaporator or may be connected directly to the feedwater supply to maintain a constant flow to the evaporator during injection of water.

Abstract: Emission control apparatus for an internal combustion engine includes a sensor for detecting the concentration of an exhaust composition to generate an error correction signal for controlling the air-fuel mixture ratio at a predetermined value to minimize noxious exhaust emissions and a transient compensation circuit to provide a step function voltage to compensate for transient engine operating condition in response to a sensed change of engine load.

Abstract: An internal combustion piston engine has a prechamber or auxiliary chamber associated with each main combustion chamber and connected thereto by a plurality of torch openings. Ignition of a relatively rich mixture in the auxiliary chamber causes flames to be projected through the torch openings to ignite the relatively lean mixture in the main combustion chamber. At least three torch openings are provided in the bottom wall of the auxiliary chamber; one is directed toward the main intake valve in the main combustion chamber, another is directed toward the exhaust valve in the main combustion chamber, and a third directs a flame toward a region of the main combustion chamber remote from both valves. Additional torch openings are employed for larger engines. The relative positions of the torch openings are defined as well as their total cross sectional area compared to the volume of the auxiliary combustion chamber.

Abstract: A liquid-cooled internal combustion engine with a control of the cooling medium temperature of its cooling medium circulation by a thermostatically operating mixing valve which includes a mixing chamber in open communication with the suction connection of a circulating pump interconnected into the cooling medium circulation, a return chamber adapted to be closed off with respect to the mixing chamber by a return control valve and connected with the cooling medium outlet of a radiator by way of a radiator return line, and a by-pass channel connected with the cooling medium outlet of the internal combustion engine and adapted to be closed off with respect to the mixing chamber by a by-pass control valve; the cooling medium outlet line of the mixing valve is connected by way of a radiator inlet line with the radiator inlet of the radiator while the return chamber is connected by way of a vent connection with an auxiliary chamber fed with cooling medium by the circulating pump by way of the radiator inlet line fo

Abstract: An auxiliary intake passage system for internal combustion engines having a main carburetor delivering a lean mixture to main combustion chambers through a main intake passage, and an auxiliary carburetor delivering a rich mixture to auxiliary combustion chamber through an auxiliary intake passage. The auxiliary intake passage system is comprised of an induction passage leading from the auxiliary carburetor to an auxiliary intake distribution chamber. A plurality of branch passages extend laterally from said auxiliary intake distribution chamber and lead to the auxiliary combustion chambers. The induction passage comprises a first portion of substantially uniform cross-sectional area connected to a second portion which is tapered and so formed that the internal wall of the tapered section is outside the axial projection of the internal wall of the first portion, thus minimizing resistance to fluid flow and improving fuel distribution and homogenation to each combustion chamber.

Abstract: A two-part variable compression ratio cylinder is provided having inner and outer sleeves wherein relative movement between the sleeves varies the volume of the combustion chamber and hence varies the compression ratio of the engine. Hydraulic means responsive to the pressure in the combustion chamber automatically varies the position of the inner and outer sleeves to regulate the combustion chamber volume. The cylinder is adaptable to engines of any type.

Abstract: Disclosed is a throttle valve opening control device for use in an internal combustion engine. When the throttle valve is rapidly closed after completion of the warm-up of the engine, the throttle valve is temporarily held during a first length of time at a predetermined opening degree which is greater than an idling opening degree and, then, the throttle valve is gradually returned to its idling position. Contrary to this, when the throttle valve is rapidly closed before completion of the warm-up of the engine, the throttle valve is temporarily held at the predetermined opening degree during a second length of time, which is longer than said first length of time and, then, the throttle valve is gradually returned to its idling position.

Abstract: An ignition timing control change-over system for an automotive internal combustion engine which has a spark retarding point in addition to a normal or spark advancing point. The system employs a change-over type relay switch for selectively and independently connecting either the spark advancing or the retarding point to the ignition coil in response to particular operating conditions of the engine. Under certain idling conditions of the engine, the spark retarding point of the distributor is connected to the ignition coil, and at the same time the throttle valve of the engine is opened by a throttle opener for temporarily increasing the engine speed to attain prompt warm-up of the engine and also of the exhaust gases. Unburned hydrocarbons and carbon monoxide contained in the exhaust may be reduced by a considerable degree as a result of this retarded control of the ignition timing under certain idling conditions of the engine.

Abstract: There is proposed an ignition apparatus for use with an internal combustion engine, including therein an ac or dc power source and an ignition coil whose primary winding together with a controllable electric switching element forms a closed circuit. The apparatus includes therein a control circuit for controlling the electric switching element, which control circuit comprising a first, second, and third signal generating means for supplying control signals to the control electrodes of the switching element in synchronism with the ignition timing of the engine. The third signal generating means detects the spark positions, i.e. angular positions of the engine shaft at which the spark plugs are to be fired, at high speeds of the engine so that the maximum advance in angular position for ignition timing can be suppressed.

Abstract: A device for controlling the air-fuel ratio of the mixture supplied to an internal combustion engine having a Venturi-type carburetor is disclosed. The device comprises a sensor for detecting the concentration of oxygen contained in the exhaust gas, an electromagnetic valve arranged in an air bleed passage of said carburetor, which passage is controlled so as to be either of opened or closed by said valve in accordance with a signal from said sensor, and another valve comprising an air valve arranged in said air bleed passage and controlling the quantity of air bleed by changing the opening area of said air bleed passage in accordance with the quantity of the suction air introduced to a combustion chamber.

Abstract: An exhaust gas recirculation system comprising an exhaust gas recirculation passage means between an exhaust gas passage and an intake passage, first and second flow control valves provided in the recirculation passage means in parallel relationship with each other for regulating flows of the exhaust gas in response to two kinds of vacuum having different characeristics, and a third flow control valve provided in the recirculation passage means in series with said first and second valves for regulating a flow of the gas in response to opening of a throttle valve of a carburetor, thereby obtaining the appropriate amount of exhaust gas recirculation in light and medium loaded driving ranges.

Abstract: A device for adjusting the intake air temperature of carburetor-equipped internal combustion engines having an air intake system with a flapper valve in a duct junction admitting cold raw air and/or preheated raw air to the intake filter, depending on the raw air temperatures, the flapper valve position being controlled by a pneumatic membrane actuator receiving negative pressure from the intake manifold, via a vacuum line with a thermostat-controlled relief valve responsive to the temperature of the air mixture. In the drive connection between the membrane actuator and the flapper is arranged a wax thermostat which increases or decreases the effective length of the connection in response to the ambient air temperature, thereby adding the thermostat displacements to the actuator displacements.

Abstract: A fuel supply apparatus for an internal combustion engine in which fuel is supplied to the air induction tube in proportion to the aspirated air flow rate. A fuel metering valve, which may be electromagnetically actuated on the basis of engine rpm and other variables, is connected to the induction tube, possibly into the bypass channel of a carburetor to provide fine fuel control. Between the fuel metering valve and the induction tube there is disposed a pneumatic valve assembly including an equal pressure valve, the pressure chamber of which controls the fuel flow and the control chamber of which is coupled to the pressure chamber of a further, differentially-biased pressure control valve connected to downstream portions of the induction tube. The differential pressure valve maintains the control pressure in the equal pressure valve.

Abstract: In a non contact ignition circuit for an internal combustion engine, a current induced in the primary winding of an ignition coil is controlled and cut-off by operation, on and off, of a thyristor so as to produce a discharge in a spark plug. A capacitor connected to the gate of the thyristor is charged with an inverse voltage. When the rotational speed of the internal combustion engine exceeds a predetermined level, i.e. a state of overrotation, the inverse voltage stored in the capacitor is discharged whereby the gate potential of the thyristor is negatively biased relative to the cathode. Accordingly, during the discharging period of the capacitor, the triggering time of the thyristor and sparking are retarded as compared to the normal running condition of the internal combustion engine. Thereby overrotation of the internal combustion engine is prevented.

Abstract: The air-fuel mixture in each combustion chamber of a dual spark plug ignition engine is ignited with two spark plugs during normal engine operation, but is ignited with only one of the two spark plugs during high power output engine operation. The spark timing in the ignition with one spark plug is advanced relative to that in the ignition with two spark plugs.

Abstract: Internal combustion engine including a fuel supply system which comprises a main carburetor having an intake passage leading to a combustion chamber of the engine. The engine is further provided with a starting fuel supply device which includes a starting fuel supply passage having one end opening to atmosphere and the other end connected with the intake passage. The starting fuel supply passage is provided with a fuel discharge nozzle and a starter valve disposed downstream of the nozzle. The supply passage has a cross-sectional area which is small in relation to that of the intake passage so that adequate air flow speed can be ensured even in engine starting period.

Abstract: A system which normally prevents an attempt to start an engine while the engine lubricant pressure is high. However, in an emergency it is possible to crank the engine even though the lubricant pressure is high by operating the start switch and main switch in the reverse of the usual sequence.

Abstract: Circuit for controlling the operability of one or more cylinders of a multicylinder internal combustion engine having electrically controllable means associated with it for preventing combustion from occurring in at least one cylinder of the engine. Preferably, the electrically controllable means for preventing combustion in a cylinder comprises a solenoid and associated mechanical means for preventing opening of the intake and exhaust valves for such cylinder to be thus disabled. Maintaining the intake and exhaust valves in a closed condition prevents the intake of an air-fuel mixture and permits compression and expansion, in a spring-like manner, of gases trapped within the combustion chamber.

Abstract: In an internal combustion engine, the magnitude of the engine load is compared with a reference level which is variable as a function of engine speed to detect when the engine load under low speed operation is small in proportion to the engine speed. Under these circumstances, fuel supply to a portion of the cylinders is blocked to allow the engine to run on a lesser number of cylinders so that fuel economy is achieved.

Abstract: This invention relates to a fluid displacement apparatus and, more particularly, to fluid displacement apparatus which, with suitable modifications, can be used as a pump, compressor, pneumatic or hydraulic motor or as an internal combustion engine. The fluid displacement apparatus includes a body having a chamber defined therein. At least a portion of the inner surface of such chamber is in the form of a concave segment. Partition means are sealingly engaged with said chamber and define an enclosed space therewith. A baffle extends through said partition means in sealing engagement therewith and is movable relative thereto. The baffle has a peripheral edge shaped to sealingly engage said inner surface of said chamber in relatively movable relation thereto such that said baffle is capable of sweeping motion to and fro relative to said chamber whereby to vary the volumes of the regions located between said inner surface and said partition on the opposing sides of said baffle.

Abstract: The disclosure is directed to a rotary engine having an annular housing and a plurality of walls disposed around the interior of the housing with adjacent walls joined by rounded corners. A plurality of sliding pistons are disposed within the interior of the housing spaced apart from one another and connected radially to a drive shaft extending through the interior of the housing along the central axis thereof. The sliding pistons having face portions adapted to slide adjacent the inner surfaces of the walls are disposed radially outward of the drive shaft. End plates disposed at opposite sides of the housing and intersecting the central axis thereof enclose the opposite sides of each sliding piston which extend to adjacent the inner surfaces thereof. The sliding pistons are guided around the plurality of walls and rounded corners of the housing chamber by cams attached to the end plates.

Abstract: A cutting machine for concrete piles and the like having an annular elongate frame positionable around a concrete pile, with first and second sets of guide members in spaced-apart relation to align the frame with the pile, first and second sets of movable clamps for locking the frame to the concrete pile, annular track means on the frame and a cutter head with drive means movably mounted on the annular track means and having a cutter-carrying arm movable across the top of the frame to engage the wall of the concrete pile.

Abstract: Chisel for an impact apparatus comprising a stem with connecting means, in line with said stem a blade-shaped, longitudinal chisel part, the free end of which is provided with a plurality of teeth which are thicker than the blade-shaped part. Extending from between the teeth either straight or undulated grooves are arranged in the blade-shaped part.

Abstract: A low temperature gas-fired or electrically heated oven and warming unit for domestic purposes having a chamber enclosed by walls and a door at the front. The chamber is variable in volume, for example by being vertically extensible by having overlapping, relatively movable wall portions at the side and back and a door which automatically adjusts to the volume of the chamber for example by being of the tambour or roller shutter type. The unit can be fixed by the top section under a kitchen wall unit and extended downwards for use. Removable, lazy-tongs linkages at the sides of the unit control the extension of the chamber and are jointly operated by a single adjustment control. Shelf supports on the linkages move to alter the spacing of the shelves as the chamber volume is varied.