Abstract: A sealing nut having a shouldered insert of heat stabilized-lubricated nylon with a protruding crown, locked into a recess provided at one end of the nut body by means of a coined lip engaging the shoulder. Sealing is effected when the nut is engaged on a threaded male member and screwed against a bearing surface through which the male member extends by exterior folding of the crown upon itself and confining the resulting fold within the lip, said lip being brought into metal-to-metal engagement with the bearing surface.

Abstract: A chipperless radial ply tire having its carcass ply endings wrapped axially outwardly about the bead cores and terminating along a neutral stress line and with the air impervious liner extending axially outwardly about the bead cores and completely encasing the ply endings and further including a hard chafer strip extending at least from adjacent the radially outer extremity of the bead core to about 40 percent of the section height of the tire.

Abstract: Apparatus for remotely controlling the pressure in a pneumatic tire in which a pneumatic chamber communicating with a tube inserted in a tire and a chamber whose internal pressure is remote-controlled from the cab are aligned on the same axle of a vehicle. The piston penetrates into both chambers and the internal pressure in the tube can be adjusted by changing the internal volume of the pneumatic chamber due to displacement of the piston.

Abstract: A tubeless tire to be mounted is placed on a wheel rim so that a side-wall bead of the tire is in contact with the adjacent wheel rim flange. A plastic, water soluble substance of doughy consistency is then placed in the gap between the opposite side-wall bead and its adjacent wheel rim flange to form an airtight seal. Air is then introduced into the tire in the conventional manner through the wheel rim valve until desired inflation is achieved. During inflation, the plastic substance is expelled and may be manually removed and/or washed off with water. In the case of large tires, wherein the gap between the side-wall bead and its adjacent wheel rim flange is large, the quantity of the plastic substance used is minimized by first inserting a flexible annulus, such as an inflated tube, into the gap.

Abstract: A thermal insulating curtain, especially for use in greenhouses, which comprises a plurality of superimposed uni-directionally arranged tubular members with a common slat-like partition between each two adjacent ones of said tubular members. Each of these tubular members along its two opposite sides has a folding crease to allow collapsing said tubular members to thereby permit collapsing the entire curtain in a manner of a blind or to roll the curtain up in the manner of a shade.

Abstract: A window with a ventilating capability that does not decrease the insulating effect includes a window sash on which there are disposed at regular spaced intervals a plurality of screens between which are formed insulating air layers.

Abstract: A cover for a window air conditioner unit adapted to cover and insulate the window as well as the air conditioner unit. The cover is attached to a window shade roller mounted at the top of the window frame in order to store the cover when not in use. "VELCRO" fastener strips are secured to the window frame andperipheral edges of the cover and when interengaged fasten the cover to the frame and insulate the interior of the cover.

Abstract: An emergency temporary door cover for covering a broken glass door pane until the broken glass can be replaced, comprising a cover sheet which is foldable for easy storage when not in use, a hook extending from the top of the sheet for suspending the sheet from the top of the door, upper and lower straps extending from the sides of the sheet, and bendable wire supported by the straps and adapted to take a set, so that the installer may hook the sheet to the top of the door and bend the wire around the side edges of the door to hold the cover sheet in place, and may do so while standing in front of the door. Then the installer walks to the rear of the door while the hook and side wires hold the cover in place, and ties the straps across the rear of the door to secure the cover to the door until the broken pane can be replaced.

Abstract: A method of forming investment casting shell moulds by alternately dip coating a mould former in slurries of refractory particles and stucco coating the former, wherein the slurries contain a binder and a thixotropic modifier to reduce or eliminate the drying period between dip coats. The initial slurry has a suspended solids content in the range 30% to 50% by volume of the total volume of the slurry to provide an initial coating on the former which will not be penetrated by the relatively coarser stucco particles, while the other slurries have a suspended solids content in the range 20 to 40% by volume of the total volume of the slurry to coat the previously applied stucco coating. The thixotropic modifier is at least one substance selected from aluminum alkoxides, aluminum aryloxides, clays, carbon blacks, fumed silicas, fumed alumina, fumed titanium oxide, fumed zirconium oxide, fumed hafnium oxide and fumed chromium oxide.

Abstract: A simple and economical method of forming a foundry mould for precision investment casting wherein the time period for allowing each applied refractory coating and stucco coating to set on a meltable mould former is substantially reduced by applying alternate coatings of immiscible, refractory particle binders to the mould former interspersed with stucco coatings, with at least one of the refractory particle binder coatings being in the form of a slurry containing refractory particles. This eliminates the necessity of having to allow one coating to set before the next one is applied. The alternate refractory particle binders used are a partially hydrolized, organo-silicon compound and an alcohol tolerant non-alkaline aqueous colloidal silica.

Abstract: Continuously cast ingots are spray-cooled by a fanned-out flow of water which has been accellerated by pressurized air with an original nozzle direction parallel to the surface of the ingot and transversely to the direction of ingot withdrawal. The arrangement avoids cooling impediment on account of the Leiden frost phenomenon.

Abstract: In injection apparatus of the type wherein molten metal is injected into the metal mold of a die casting machine by an injection plunger and the fluid pressure acting upon the injection pressure is increased by a booster piston at or near the end of the forward stroke of the injection piston by means of a booster cylinder, a limit switch is mounted along the path of the forward stroke of the injection piston to be operated thereby as so to operate the booster piston at any desired point of the forward stroke.

Abstract: In an automatic molding apparatus, a Doppler speed meter is used to detect the rising speed of molten metal within a mold, and a nozzle stopper attached to a ladle in which the molten metal is contained is actuated in response to a difference between a detected speed signal and a speed pattern signal to control the opening of the nozzle of the ladle whereby the rising speed of the molten metal fed from the ladle to the mold through the nozzle can be controlled in accordance with an optimum molding velocity pattern.

Abstract: Apparatus for batching a metal melt such as steel from a pressure tapping furnace in which a level measuring device is provided for measuring the melt level in the tapping spout and using that level to calculate a signal for terminating the batching which is dependent on the integral of melt flow, and the rate of change of melt flow so as to take in to account the double draining which occurs after the termination of batching is initiated.

Abstract: A casting support for use in automatic cast trim machines having improved casting retention characteristics and being suitable for use in machines having a simple rail for the return of spiders to the melting pot. This support is characterized by a projection supporting an enlarged end about which the casting is formed, with suitable regions adjacent the projection to provide positive locking of the extensions of the casting around the projection to prevent separation of the casting in that area and the resulting loosening thereof upon the rotation of the index mechanism in the cast trim machine. Shrinking of the casting during cooling in combination with the locking of the casting provides positive orientation of the casting on the support, yet ready removal thereof by a simple punch.

Abstract: Ingot mold for continuous rotary casting has an inner sleeve, the inner surface of which contacts the casting and rotates therewith and a stationary outer jacket, in which said sleeve is rotatably mounted. A pair of concentric annular ducts for cooling fluid are formed in the sleeve concentrically with respect to the cooling surface and are connected at their upper ends. Bearing means are provided between the sleeve and jacket, and labyrinthine seals are located above and below the bearing means. The cooling fluid enters the outermost duct and leaves the innermost duct below the bearing so that there is no possibility that water will enter the bearing.SUMMARY OF THE INVENTIONThis invention relates to an ingot mold for the continuous rotary casting of ingots and especially for the preferably oscillatory vertical rotary casting of steel ingots.Applicant has already described in French Pat. No. 70.47337 filed Dec.

Abstract: An air conditioning system for conditioning air in a plurality of enclosed areas in a building. Conditioned air at a relatively cold temperature level is supplied to a terminal for discharge into an area. The quantity of relatively cold temperature air discharged into the area is regulated in accordance with the temperature level therein. A control signal is generated, the magnitude thereof being indicative of the quantity of conditioned air discharged into the area. The magnitude of the control signal is monitored. Warm air supply means is activated when the magnitude of the control signal indicates that the quantity of the relatively cold temperature air being discharged into the area has decreased below a predetermined level.

Abstract: A holder for apparatus that is positioned in an air preheater to detect an increase in infra-red ray emission therefrom indicating a temperature rise that precedes conditions conducive to a fire in the air preheater.

Abstract: A device used when assembling rotary regenerative heat exchange apparatus having a rotor disposed about a vertical rotor shaft by which the rotor thereof may be quickly aligned vertically over a subjacent support bearing to preclude mis-alignment during operation.

Abstract: A novel control circuit for heating and heating/cooling systems wherein in a heating mode the circuit controls a valve means comprising a main valve and a modulating valve through which gas is supplied to a burner. The main valve is a normally closed, solenoid-actuated type which opens when its coil is energized, and energization of its solenoid is controlled by a pair of normally open relay contacts connected in series. One of the contacts closes when the temperature in the space being heated drops below a preset temperature. The other contact remains closed so long as the temperature in the space being heated remains below a maximum limit. In a heating/cooling system the circuit is selectively operatively coupled with the valve means and a refrigeration unit. When heating is selected, the circuit operates as mentioned above. In cooling, a cooling solenoid of the refrigeration unit is energized when the temperature in the space being cooled rises above a preset temperature.

Abstract: An apparatus for heating and/or cooling air has an upright housing through which at least two feed riser pipes and one condensate riser pipe pass. This housing has an outlet opening at its top and an inlet opening adjacent its base, this latter being provided with a hinged access door. A drip pan sealing the base of the housing drains into the condensate riser. A heat-exchanger assembly comprising a heat-exchanger coil, a trough below the coil which catches condensate and empties into the drip pan, valve for controlling liquid flow through the coil, a blower for forcing air through the coil, and thermostatic controls for operating the valves is hung in the housing between the openings. Releasable couplings connect the coil through shutoff valves to the riser pipes, and releasable electrical connectors interconnect these valves to the thermostat switch.

Abstract: A wick system is disclosed comprising a casing, a wall capillary and a mesh screen wick having at least one artery structure used in conjunction with a closed or open system while in contact with the wall capillary. The wick system may be used in a vertical or inclined position with a condenser at the top.

Abstract: A radiator assembly having several radiator sections connected together by integral flanges which are telescoped together. Each radiator section is constructed of two metal panels which are identical and which are mated together and welded. Corrugated surfaces on each panel define ducts through which the fluid flows. The corrugation ridges on one panel are aligned with the corrugation furrows on its mating panel. The ridges on the panels are also aligned with the furrows on the facing panels of the adjacent radiator sections.

Abstract: A heat exchanger for exchanging heat between fluids comprising a conduit for flow of a first fluid therethrough comprising a manifold with a single port in one area and a pair of ports in another area and a plurality of spaced fluid tubes attached to the pair of ports with the combination of the plurality of tubes having outer peripheral surfaces describing a cylinder and the inner confronting peripheral surfaces spaced apart to provide an open area therebetween for flow of a second fluid therethrough and means for directing the second fluid over and around both the inner and outer peripheral surfaces and through the open area between the tubes for achieving maximum surface area heat transfer with minimum cross sectional area of the conduits.

Abstract: A surface-controlled subsurface safety valve apparatus and method of utilizing the safety valve in through-the-flowline serviced wells. Both the valve frame and valve operator are provided with ball and socket universal joints to enable passage of the safety valve past restrictions in the flowline resulting from bends and curves in the flowline by flexing the safety valve in moving to and from the subsurface operating location.

Abstract: Recovery of viscous petroleum such as from thick tar sands is assisted using a closed-loop flow path formed in a well by concentric casing and tubular members extending from the earth's surface through a substantial portion of the formation for conducting hot fluid to reduce the viscosity of the petroleum in the formation to develop a potential passage in the formation outside the flow path into which a drive fluid is injected to promote movement of the petroleum to the well for production up a production flow line extending up the interior of the tubular member.

Abstract: This invention relates to the recovery of oil from an oil well which normally produces a mixture of oil and water. The invention is carried out by determining the potential free water level in the well bore, draining the oil gravitationally from a point above the predetermined water level, and withdrawing the drained oil.

Abstract: This specification discloses a method of recovering thermal energy from a coal formation having a preferred vertical fracture orientation. An injection well and a production well are provided to extend into the coal formation and a vertical fracture is formed by hydraulic fracturing techniques and propagated into the coal formation to communicate with both the wells. The vertical fracture is propped in the lower portion only. A combustion-supporting gas is injected into the propped portion of the fracture and the coal is ignited. Injection of the combustion-supporting gas is continued to propagate a combustion zone along the propped portion of the fracture and hot product gases generated at the combustion zone are produced to recover the heat or thermal energy of the coal. Water may also be injected into the fracture to transport the heat resulting from the combustion of the coal to the production well for recovery.

Abstract: This invention relates to the recovery of petroleum from tar and heavy oil sands in which one or more injection passages and two or more removal passages are established between the surface of the ground and an underground petroleum deposit. Hot water is injected into the petroleum deposit at a temperature above the pour point temperature of the petroleum substance, and heat is transferred until the petroleum substance becomes flowable. Under the influence of induced pressure, the petroleum substance is made to flow countercurrent to the flow of heat, with the petroleum substance captured at the surface of the ground.

Abstract: An apparatus and method for running a compression-type annulus packoff on a drill or other pipe string into an oil or gas well, setting the packoff without rotating the drill string, and then shifting the axial load of the drill string from the packoff to a casing hanger or other suitable well element so that the packoff can be pressure tested under conditions closely simulating normal service conditions. The apparatus comprises an hydraulically actuated well tool that functions both as a means for connecting the packoff to the drill string on which the tool and packoff are run as an assembly into the well, and also as a means for converting hydraulic pressure in the drill string into torque and then transmitting this torque to the packoff for rotating its seal-compressing element, thereby compressing its seal into fluid-tight engagement with the adjacent well elements.

Abstract: An apparatus and method for running a compression-type annulus packoff on a drill or other pipe string into an oil or gas well, setting the packoff without rotating the drill string, and then shifting the axial load of the drill string from the packoff to a casing hanger or other suitable well element so that the packoff can be pressure tested under conditions closely simulating normal service conditions. The apparatus comprises an hydraulically actuated well tool that functions both as a means for connecting the packoff to the drill string on which the tool and packoff are run as an assembly into the well, and also as a means for converting hydraulic pressure in the drill string into torque and then transmitting this torque to the packoff for rotating its seal-compressing element, thereby compressing its seal into fluid-tight engagement with the adjacent well elements.

Abstract: A metal building with combined temperature control and firefighting system, wherein the building includes a metal frame structure having hollow members defining water flow passages for circulation of water throughout the building structure to heat or cool the building, depending upon whether hot or cold water is circulated, and having heat responsive devices and water distribution devices connected therewith, whereby in the event of a fire, water is caused to flow over portions of the building surface and through the frame members, to prevent damage or destruction thereto due to heat from the fire.

Abstract: This invention relates to installation of fire sprinkler systems. In particular the present invention provides a means of installing such system before or after a ceiling has been fixed in a building. Essentially the present invention provides a water dropper pipe, a sprinkler attached to the dropper pipe and an escutcheon means. In effect, the present invention allows the sprinkler system to be installed at the most convenient time during the building operation. The escutcheon means being positioned over the sprinkler only after positioning of the ceiling such that the escutcheon means abuts against the ceiling thereby covering the immediate area between the sprinkler and the ceiling.

Abstract: An improved gasoline safety tank and fire extinguisher comprising a tank body with interchangeable inlet and outlet fittings secured thereto, an intermediate container mounted in the tank for holding gasoline, and a carbon dioxide bottle mounted in the intermediate container. A conduit is connected to an inlet fitting and extends into the intermediate container adjacent the floor of the intermediate container and below the level of liquid placed in the intermediate container. A pressurized carbon dioxide bottle is selectively connected to the inlet fitting and adapted to discharge pressurized carbon dioxide gas into the intermediate container so that the gas bubbles up through the liquid in the intermediate container into the top of the intermediate container simultaneously cooling the liquid and pressurizing the liquid in the intermediate container.

Abstract: A fire extinguisher is disclosed which is activated by operation of a unique valve and handle assembly. The handle of the fire extinguisher, which is to be utilized to operate the valve, is designed to simplify construction and assembly of the component parts in addition to simplifying recharging and servicing of the extinguisher. The handle is attached to the valve body through the use of only one rivet while being nonetheless permanently positioned with respect to the nozzle. The handle is further useful to simplify securing the nozzle to the valve body.

Abstract: There is disclosed a hydraulic control system including body automatic and manual control for controlling the position of a grader blade for a motor grader. The hydraulic system is supplied fluid from a single pump and is provided with means to isolate the fluid supply from the automatic portion of the system when the manual portion of the system is activated.

Abstract: A shift dog for an in-line transmission is provided to engage and disengage rotatable members or gears in the transmission. The shift dog has resiliently-mounted teeth which can yield if the teeth are not properly aligned with recesses in the gear when the dog is attempted to be moved into engagement therewith. The transmission can then be shifted through that gear to another position, and particularly to neutral, even though the dog and gear are not aligned for engagement.

Abstract: A work vehicle has a blade assembly formed of upper, middle, and lower generally horizontally extending blade portions that are controllably, pivotally movable for varying the general curvature of the working surface of the blade assembly.

Abstract: A bulldozer assembly comprises a pair of laterally spaced push arms pivotally interconnected between a blade thereof and a vehicle. A pair of lift cylinders are also pivotally connected between the vehicle and the blade for selectively raising or lowering the blade relative to the vehicle. A tilt mechanism for selectively tilting the normally upright blade in a vertical plane comprises first and second members each pivotally interconnected between the vehicle and the blade on an outboard side thereof. A double-acting cylinder is pivotally interconnected between inboard sides of the members for selectively pivoting the members relative to each other to tilt the blade.

Abstract: A non-impacting nut running pneumatic tool in which torque pulses are transmitted by an oscillating air motor through a one-way clutch and reduction gearing to the work. A torque responsive cam clutch member responds to a pre-determined delivered torque to cause stalling of the motor by blocking off escape of exhaust air and to cause discontinuance of further torque transmission to the work by disabling the drive connection. Manually operable adjusting means is provided to regulate the value of torque delivered.

Abstract: An assembly for drilling a hole in a roof to a greater depth than the height of the chamber therebelow includes a starter-driver bar having a first end adapted to be driven by a motor and a second end having a female socket therein, a rod extension including a male end shaped to be received in said female socket and a female socket at its other end of the same cross-sectional size and shape as the first named female socket, and a bit having a male shank of the same cross-sectional shape as said male end. A starter hole is first drilled using the starter-driver with the drill bit in its top and a motor connected to its lower end. Drilling then is continued with an assembly consisting of a first rod extension between the bit and starter-driver. Additional rod extensions are inserted between the starter-driver and the bottom rod extension until a hole of the desired depth is obtained.

Abstract: There are disclosed several embodiments of a well tool which is adapted to be connected as part of a pipe string through which drilling fluid is circulated, and which comprises inner and outer members which are rotated with respect to one another by a motor between them.

Abstract: There is disclosed a tool which is connectible as part of a drill string and which is adapted, upon lifting of the drill string, to permit drilling fluid therein to by-pass a motor in the lower end of the string below the tool.

Abstract: A nozzle is releasably locked in a drilling fluid passage of a rotary rock bit by a retainer member which bridges between matching grooves in the periphery of the nozzle and in the wall of the passage respectively. The retainer member is introduced to the matching grooves through a first passageway that extends from the surface of the bit to the matching grooves. The grooves lie in a common plane. A second passageway extends at an angle to the common plane from the surface of the bit to the matching grooves. A drive-out tool is inserted through the second passageway to remove the retainer member.

Abstract: A motorized two-wheeled vehicle construction having a power unit swing system comprising a vehicle body frame connecting a front head pipe to the lower surface of a seat unit for a driver, the rear side of the frame being provided with a curved lower elbow portion to which a power unit is pivotably or swingably attached. The power unit comprises an internal combustion engine and an integral power transmission mechanism extending rearwardly from the engine to one side of the rear wheel to drive the same. The power unit is swingably attached at its front end to the curved lower portion, and a shock absorber connects the rear portion of the power unit and the lower surface of the seat unit.

Abstract: A radiator apparatus in a motorized two-wheeled vehicle in which a radiator for cooling an internal combustion engine is mounted between left and right tubular elements of the vehicle body. Left and right air guide plates are mounted on the radiator and project obliquely forwards at both outside edges of the radiator to cover the front surfaces of the tubular elements to direct air to the radiator while preventing turbulence at the tubular elements.

Abstract: A synchronous control system for a pair of hydrostatic transmissions and more particularly a drive for a vehicle using a pair of hydrostatic transmissions with each driving a propulsion member and a straight tracking control therefor, with the system having a pair of pressure-responsive displacement controls, associated one with each transmission and pressure lines connected thereto for providing a control pressure signal which is applied to a displacement control.

Abstract: A portable, electric propulsion unit for attachment to a cart or the like including a longitudinal frame member, a battery storage container connected at one end to said frame member, a pair of side frame members connected to said battery storage container and said longitudinal frame member, a wheel mounted between said frame members, an electric motor mounted on one side frame member, a gearing means connecting said motor to said wheel, a connecting bracket rigidly coupled to one wall of said battery storage container and a battery charger connected on a side opposite said motor. The device is readily attachable to a cart, such as a golf bag cart, to provide propulsion of the cart upon command from an electric switch. The device has improved structural rigidity and dynamic balance for increased mobility and reliability.

Abstract: An articulated four-wheel drive tractor has front and rear frame structures joined by vertical pivots and supported by front and rear drive axle assemblies. The tractor has a split, speed change transmission with a first section supported on the front frame structure and a second section supported on the rear frame structure. The first transmission section is driven by an engine mounted above the front axle structure and its output is transferred to the second transmission section through an upper driveshaft which crosses the axis of articulation and drives a gear train on the rear frame structure forwardly of the second transmission section. The second transmission section output shaft is connected directly to the rear axle assembly and is connected to the front axle assembly through a second driveshaft which crosses the axis of articulation below the upper driveshaft.

Abstract: A pipe support to fit different size conduits and suitable for automotive exhaust systems includes a snap-in clamp formed of a single piece of spring wire to have offset resilient jaws of elliptical shape that spread apart upon insertion of the conduit and then snap in place through their own inherent resiliency to hold the conduit in the desired suspended position and a helical coil that is fitted on a rubber support grommet.