Abstract: A locking device is provided for holding an aircraft door in an open position. The device includes a first member connected to the door which moves in correspondence with door opening and closing. A second member of the device is fixedly connected to aircraft structure that supports the door. A locking pin, connected to the first member, is engaged with a pin receiving opening in the second member when the door is fully open to hold the door in such position. The pin is movable axially by a manually operated lever to disengage the pin when it is desired to close the door.

Abstract: A weatherstrip (20) for use with a slideable panel unit having a first panel and second panel, one of the panels being a slideable panel is disclosed. The weatherstrip (20) includes an engaging member (21) having a leading edge (26a-c) and having a first end (21a), a center region (21b) and a second end (21c). An offset member (22) is cooperatively connected to the engaging member (21), wherein when the offset member (22) is connected to one of the panels, the engaging member (21) is in a generally parallel spaced relationship to one of the panels. The leading edge (26b) of the engaging member (21) is in inwardly displaced at the center region (21b) with respect to the leading edge (26a) and (26c) at the ends (21a and c), whereby the inward displaced region (21b) reduces clashing between the panels when one of the panels is bowed.

Abstract: A channel-shaped bracket of polyvinyl chloride having leg portions possessing a durometer value on the order of Shore D90 and hook portions integral with the free edges of the leg portions that have a durometer value on the order of Shore A70 is disclosed. The relatively soft and more flexible hook portions releasably engage ridge hooks extending in a recessed relation along the marginal edges of a jamb liner, the jamb liner also being of polyvinyl chloride with a durometer value on the order of Shore D90. The hook portions, being softer and more flexible than the ridge hooks as indicated above, readily release the jamb liner when a sufficient pull is applied so that the liner can be easily removed from the wooden jamb to which it is attached. The web of the bracket is sufficiently thin such that the bracket can be stapled to the wooden jamb.

Abstract: An installable window protector, for protecting windows against flying debris incident to severe storms is provided for metal extrusion frame windows. A rectangular sheet of plywood, sized to the internal dimensions of the window frame, is provided with two, vertically in line handles in the lower third section to permit the entire sheet to be readily twisted and manipulated by an individual standing within the window. The end of the sheet opposite to the location of the handles is provided with a tapered edge and at a location approximately at a lower third dividing line of the sheet two opposed extendable deadbolts are installed. The sheet is easily installed to cover the exterior of the window by a person standing in the house, by opening the window and manipulating the sheet by means of holding both handles so as to pass the sheet to the outside of the window. The sheet then may be readily engaged with the top lip of the metal window frame, the taper serving to guide the sheet into place.

Abstract: A face grinder capable of grinding the end surface of a workpiece without leaving any unground protruding portion at the center thereof by imparting rotation on its own axis and around a chuck holder or eccentric rotation to either a chuck for holding the workpiece or a cup-shaped grinding wheel by a planetary gear mechanism.

Abstract: A rain water leader/gutter adaptor which is adapted to siphon rain water from a gutter. The rain water may be collected inside a gating vessel which is attached to the rain water leader/gutter adapter. In a modified form a leader adaptor is attached to siphon excess rain water from within the rain water leader/gutter adapter once the water collector fills up.

Abstract: A bracket for mounting a fixture on a wall of a building. The bracket includes a hollow neck structure. At one end of the neck structure is flange means which is mounted on sheathing of the wall. The other end of the neck structure is closed by a main plate. An edge portion of the main plate extends outwardly of the neck structure spaced from the flange means to form an annular socket in which edge portions of siding of the wall terminate. The fixture can be mounted on the main plate, and access to the fixture can be had through an opening in the main plate.

Abstract: A gazebo and a lean-to shelter have rigid panels with a soft material canopy spread over an arrangement of spokes or ribs. The gazebo has a compression spoke arrangement for holding the canopy in a dome configuration. The spokes of the gazebo include a flat hook underneath each spoke adapted to engage a draw cable at the top periphery of the rigid panels, and a sleeve fits over the end of the spoke and the end of the flat hook to lock the draw cable within the hook. A tip engages the end of the tube and the sleeve to lock it in position on the flat hook. The ribs of the lean-to have a toggle arrangement for extending the ribs when the lean-to shelter has been assembled and to apply tension on the canopy. The end of the toggle is adapted to fit in a rail which in turn also receives the edge of the canopy, and the rail is mounted in a track.

Abstract: An animal housing system, for example, a horse barn, is constructed to permit ready access by a vehicle for purposes of cleansing the interior of the structure and removal and replacement of the bedding and supporting surfaces. The housing system is structured to incorporate exterior and internal walls arranged to form individual stalls; the interior walls, and at least a portion of the exterior walls, are arranged to be movable to alternate positions to provide an unobstructed passage extending the length or breadth of the entire structure to permit a vehicle to pass therethrough.

Abstract: A collapsible shelter, comprises a first group of panels hingedly connected to each other in accordion fashion to permit them to be moved to an open condition to define the walls of the shelter, or to be collapsed to a folded condition for storage or transportation; a second group of panels hingedly connected to each other in accordion fashion to permit them to be moved to an open condition to define the roof of the shelter, or to be collapsed to a folded condition for storage or transportation; retainer devices for retaining the panels of each group in their open condition; and securing devices for securing the second group of panels, when in their open condition to define the roof of the shelter, to the upper end of the first group of panels when in their open condition to define the walls of the shelter.

Abstract: A skylight shutter mechanism includes a box which preserves the structural vapor barrier and houses a moveable shutter which extends into and closes a light well of an associated skylight. The skylight shutter mechanism is provided for installation between rafters or ceiling joists of the ceiling containing the skylight. The shutter mechanism is preferably installed in new construction before walls and ceilings are finished. The shutter is manually moveable along cooperating rails by an actuating cord having ends which can be located remote from the skylight. To accommodate inclined mounting surfaces, a mechanism is provided for maintaining the shutter in a selected position. The shutter may be opaque and insulating or translucent. Also the operation of the shutter may be conveniently motorized.

Abstract: Building containing a metal framework arranged on a base (20) and including a lower frame (2) and an upper frame (3) and vertical uprights (4) between mentioned frames and coupling devices for joining parts of the frames and the vertical uprights with the frames.

Abstract: A transportable structure to form houses and the like, for immediate use in case of calamities and for other uses, comprises a supporting framework made up of closed longitudinal frames, floor platform, roof covering and head walls, all of which delimiting a useful volume, and mobile panels that are able to form additional side rooms. The mobile panels are finished with protruding elements, which form, at least in part, cylindrical surfaces slidingly cooperating to form articulations. Angle bars are provided at the ends of the structural sections to make up the seats for pins that are able to prevent the cooperating cylindrical surfaces from incidentally moving away from each other. Further angle bars perimetrically complete the panels while seals mounted on the sections coact with the sections being coupled at the articulations to ensure sealing.

Abstract: A composite metal/concrete floor system and method of installation. The system includes a novel decking profile; snap-in cover plates to provide longitudinal cells for three services; a lateral trench with sheet metal rails and bottom plates; and cooperating preset inserts.

Abstract: An electric refrigerator is disclosed which includes first and second coolers independently disposed in a freezer and a refrigeration chamber, respectively, a compressor for delivering a refrigerant therefrom, an electromagnetic valve for switching a refrigerant channel including the first and second coolers between a first referigerant flow path for supplying the refrigerant to only the first cooler and a second refrigerant flow path for supplying the refrigerant to both the first and second coolers, and a control circuit for causing the electromagnetic valve to form the first refrigerant flow path for a predetermined time interval and for causing the electromagnetic valve to form the second refrigerant flow path by preventing interruption of the compressor when the predetermined time interval has elapsed and an air temperature in the refrigeration chamber is higehr than a predetermined temperature.

Abstract: Apparatus to isolate an object or equipment from earthquake motion comprises:(a) rollable bearing means supporting such structure for lateral motion generally parallel to a support;(b) and other means including interengaged bowl and roller elements to yieldably resist such lateral movement of the structure.Typically, the bowl element defines a bowl-shaped surface having an upright axis, and the roller element comprises a ball urged into engagement with that surface to exert lateral load on the object or equipment when the ball engages the bowl surface in laterally spaced relation to the bowl axis, one of the elements carried by the object or equipment to move laterally therewith and the other element carried by the support.

Abstract: Drivers are deterred from speed violations in absence of any police car by seeing a walled structure capable of containing and hiding a police car from outside view while permitting view from inside of traffic outside. At least one end wall permits rapid exit of a police car to make an arrest. The top is open to vent exhaust gas.

Abstract: A method of producing a compressive stress in a mass comprised of plastic material having a tendon therein, at least a portion of the length of the tendon being contained in thermoplastic material within the mass, the method comprising the steps of heating the tendon to a temperature sufficient to soften the thermoplastic material in an annular region surrounding the tendon, applying a tractive force to the heated tendon, thereby placing the heated tendon under tensile stress, and securing the heated tendon to the mass in a manner that causes the tensile force in the tendon to produce a compressive stress in the mass and prestressed plastic bodies produced according to this method.

Abstract: An assembly for fastening a flexible membrane to a layer of insulation on a roof deck includes a plastic disc and a threaded screw which, when tightened, clamps the disc to the membrane. Angularly spaced pins are formed integrally with and depend from the underside of the disc and bite into the membrane to help prevent edgewise tearing of the membrane when wind uplift forces are exerted on the membrane. The pins preferably are formed between the ends of radially extending and angularly spaced ribs which depend from the underside of the disc to resist upward flexing of the disc.

Abstract: An understructure for a panel lining, such as a panel false ceiling, and for securing the lining panels to the building surface to be lined, including a first set of parallel elongate rails and a second set of parallel elongate rails extending transversely thereto, the two sets of rails being of same or similar cross-section and the rails of the first set overlying the rails of the second set at cross-over points, cross-over connections being provided to secure the rails of the first set to the rails of the second set. These connections include an upper connecting part engagable over the rail of the first set and a lower clamping part engagable over the rail of the second set at the associated cross-over point to hold the cross-over connection to the rail of the second set.

Abstract: A rail assembly which is especially advantageous for use in constructing the frame and underbody of a motor vehicle comprises an upper channel member, a lower channel member and an intermediate member or web in the form of a corrugated sheet secured between the channel members and whose margins abuttingly engage the peripheral walls of the channels. Each furrow and ridge preferably comprises a planar panel portion.

Abstract: A grid finger attachment assembly attachable to a grid structure for guiding articles delivered to the grid structure from an article supply source into containers. The grid finger attachment assembly comprises an elongated grid finger, a compressible resilient member projecting from the upper end of the grid finger receiving member defines a receiving recess for receiving the upper end of the grid finger and the compressible resilient member. The grid finger receiving member has portions defining an aperture for receiving the compressible resilient member, such that upon receipt by the receiving recess of the upper end of the grid finger and the compressible resilient member, the compressible resilient member is projectable through the aperture and engageable with portions of the grid finger receiving member adjacent the aperture, for fixedly retaining the grid finger to the grid finger receiving member.

Abstract: A method and apparatus are presented for controlling a driving system in a packaging machine. The method comprises providing a first motor for driving an article infeed conveyor for feeding articles to be packaged into a tube of packaging material, a second motor for driving a pair of rollers for drawing a film of packaging material and a third motor for driving a pair of sealing heads at an end seal mechanism and controlling the speed of the second motor and the speed of the third motor to be dependent upon the speed of the first motor.

Abstract: A process of manufacturing sacks from synthetic thermoplastic material. A tubular structure is formed from webs of plastic film in that the side portions are infolded and their overlapping margins are adhesively joined by an adhesive seam, tubular sections are severed from the tubular structure and the tubular sections are provided with bottom seam welds and are then filled and provided with top seam welds. The two plastic film webs are moved in unison, and cut sections of oriented plastic material are provided, which cut sections are shorter than the distance between the subsequently formed bottom and top seam welds as measured along the flattened sacks. The cut sections are introduced between the plastic film webs with such a spacing relative to each other that the spaces between the bottom and top seam welds are to be formed. The plastic film webs and the fabric sections are brought together and are laterally offset from each other.

Abstract: An automatic bag filling and packaging system includes a filling apparatus for filling a bag with a material through a bag mouth, and a bag supply apparatus for supplying the filling apparatus with individual bags. The bag supply apparatus has separating means for separating a chain of interconnected bags, each of which is sealed along its entire periphery, into individual bags at perforations between adjacent bags. The filling apparatus includes unsealing means and mouth widening means. The unsealing means includes a cutting member which, while a bag sealed along its entire periphery is being held, is operable to cut off one side edge of the bag to provide the bag with an unsealed mouth.

Abstract: A bag having an article applied to an inside surface thereof is formed in a continuous bag-making operation by conveying a bag-making film web and a continuous strip of material in joinable proximity with each other. The article is formed by severing the strip of material and at least one edge portion of the severed article is bonded to the continuous web of bag film. The longitudinal margins of the web are then brought together and bonded to form a tube with the article bonded to the inner surface of the tube, and bags are formed and severed from the tube with the article bonded to one inner surface of the bag.

Abstract: A conveyor for an article extends between two parallel rolls of stretch film (22, 22') to a turntable (40). The sheets of stretch film (24, 24') on the two rolls are joined together to form a curtain of stretch film. The article is brought into contact with the curtain and the sheets of film are joined together to form a sleeve out of the curtain around the article, thus securing the sheets to the article. The turntable is then rotated, thus winding the sheets several turns around the article. The sheets are then joined to form a new curtain of stretch film, after which the sheets are severed, releasing the wrapped article from this curtain.

Abstract: In a machine for making sealed containers such as blister packages, the continuous feeding of the films (1, 7) for the formation and sealing of the containers is effected alternately by at least one unit of side clamping grippers (13) and by a unit comprising the stations operating cyclically on the films, namely, a heating station (3), a container-forming station (4), a sealing station (6) and a cutting station (8). The grippers and stations are movable on rectilinear guides (11, 12) disposed parallel to the path of travel of the films, and the operative units are reciprocated over the guides by a mechanism comprising a single cylindrical cam (24) having a closed helical outline or profile that is followed by two cam-followers (21-21') angularly spaced 180.degree. from each other and slidable on stationary guides p parallel to the axis of the cam.

Abstract: A dog filtration mask including a crown band having first and second ends; air filtration paper or cloth attached to the first end of the crown band; and a collar attached to the second end of the crown band.

Abstract: A guidance control system for a harvester or like machinery includes a steering linkage operatively connected to at least one ground engaging wheel. Harvester steering is controlled through the linkage by either an operator controlled steering wheel or a sensor responsive self-steering mechanism. The sensor responsive self-steering mechanism includes a guide assembly pivotally mounted to the harvester. The guide assembly includes a pair of laterally spaced, cooperating tines that define a path therebetween for plants being harvested. A sensor positioned on each tine senses the position of plants as they are harvested. A control circuit is responsive to the sensors to selectively impart movement to the steering linkage to self-steer the harvester. The control circuit includes a main valve controlled by the operator controlled steering wheel and a secondary valve controlled by the sensors. An auxiliary feed line leads from the main valve to the secondary valve.

Abstract: For a rotary lawn mower, a cutter means provides an attachment or original equipment, providing novel means of carry of flexible strips which provide cutter elements, the strips being easily mounted in the cutter body, and the mounting of the cutter body onto the mower's drive shaft providing an automatic means of holding the filaments strips to the cutter body.

Abstract: Apparatus for connecting a grass collector to the discharge chute of a power lawn mower. A lower front portion of a ring around the receiving mouth of the collector is hooked over a detent at the bottom side of the chute and pivoted upwardly until an upper portion of the ring rests in a nest formed by a pair of upper tabs and a lower tab extending outwardly from a pivoted safety door. The door is biased toward a closed position across the discharge opening of the chute, and is opened by a hook extending from an over-center latch, between the upper tabs. The hook extends around the nested upper portion of the ring, and when the latch is manually operated to its closed position the hook pulls against the ring portion to move it and the upper part of the door forwardly. This clamps the collector mouth to the chute, at the same time opening the safety door. The collector cannot be removed until the safety door has been returned to its closed position by manually operating the latch to its open position.

Abstract: The invention is directed to a cover assembly for the discharge opening of a lawn mower, which cover assembly serves the unique triple function of (i) mulching, (ii) side-discharging with a fail-safe anti-damage feature, and (iii) enabling the attachment needed for rear bagging to be mounted without removing the cover assembly. The cover assembly also includes transition means for dispersing the cuttings over a wide area as the cuttings are discharged from the discharge opening.

Abstract: A spool retainer and method are presented which greatly increase the speed and efficiency of textile workers in changing spools on yarn covering machines. The spool retainer has an outer sleeve resiliently affixed to an inner plunger which allows the operator ease and convenience in changing yarn spools and make the doffing operation less expensive and time consuming.

Abstract: A false twist apparatus, for processing primarily fine denier yarns at low level twist levels with consistency and good process control, comprises a roller mounted for rotation about its longitudinal axis and input and output guides, to guide the yarn in a helical path around the roller, mounted on a guide support extending adjacent the roller. One of the guides is positionally adjustable on the support in a direction parallel with the roller axis to alter the helix angle of the yarn around the roller and the twist level. For S and Z twist, two drive spindles are provided symmetrically disposed on opposed sides of the support, the roller being secured on the appropriate spindle and the output guide being moved to the appropriate side of the support.

Abstract: Hydrocarbon fuel is combusted in a combustion turbine by a method which produces NO.sub.x emmissions below an ultra-low standard. In the method, first, a mix of hydrocarbon fuel and air in a primary flow thereof is burned in a primary combustion zone so as to produce a flow of hot gas of a temperature above that required for an efficient catalytic reaction and which contains NO.sub.x at levels below a low standard but above the ultra-low standard. Next, the hot gas is mixed with hydrocarbon fuel in a secondary flow thereof in a mixing and vaporization zone to provide a flow of heated fuel mixture of a temperature above that required for an efficient catalytic reaction. Thereafter, the heated fuel mixture is inefficiently catalytically reacted in a first catalytic element fuel to provide a flow of effluent gas of a temperature above that required for an efficient catalytic reaction and which contains NO.sub.

Abstract: A system is disclosed for controlling the flow of air through the air-fuel mixing device for a turbojet engine. The system simultaneously controls the amount of air passing through turbulence generating baffles and that passing into the combustion chamber depending upon the operating conditions of the turbojet engine.

Abstract: A self retracting screen for turbomachinery comprised of a number of interlocking wires, the wire ends being pivotally attached to the periphery of the normal inlet of the turbomachinery. Preferably, the wires are elliptical, or streamlined, in cross-section such that the major diameters of the elliptical cross-section of the wires when the screen is closed are substantially parallel to the turbomachinery inlet stream.

Abstract: A compact pulse-rocket engine assembly comprising an elongated substantially cylindrical housing containing an axially extending substantially cylindrical combustion chamber which terminates at one end in a nozzle means. Within the housing at the opposite end of the combustion chamber are a pair of charging chambers. Intermediate the charging chambers and the combustion chambers are a pair of valve means which are parallel and linked together for ensuring that the valves operate in unison.

Abstract: A flat-type torque converter wherein a toroid is formed of a turbine having a plate-worked turbine blade, a pump having a plate-worked pump blade and a stotor having a cast-iron stator blade, and a ratio L.sub.1 /(r.sub.2 --r.sub.1) of a toroid axial dimension L.sub.1 to its radial dimension (r.sub.2 --r.sub.1) lines between 0.67 and 0.87, a ratio r.sub.1 /r.sub.2 of a toroid internal radius r.sub.1 to its external radius r.sub.2 lies between 0.39 and 0.46, and the converter has a small axial thickness; characterized by that a wall thickness of the stator blade is made small so that an effective passage cross section inside the stator blade can be secured, a flow-in side tip edge of the stator blade is formed into a flat-shape, a core-side and a shell-side of the stator blade are formed by being twisted, and a core-side length of the stator blade is fabricated as long as possible.

Abstract: A control system of hydraulic construction machinery includes a prime mover, at least one variable displacement pump driven by the prime mover, at least one actuator hydraulically driven by the pump, maximum revolution number altering device for the prime mover, maximum displacment volume altering device for the pump and an information provider device for providing information on the operation mode of the actuator, whereby the maximum revolution number altering means and maximum displacement volume altering means are controlled by the information provider device to provide a maximum number of revolutions and a maximum displacement volume which suit the operation mode indicated by the output signal.

Abstract: A control for the speed of rotation of a hydrostatic machine in which the controlled variable and generated in a speed controller and is made up of a proportional component and an integrating component is limited by a limiting signal which is also made up of a predetermined basic value and a ramp signal behaving proportionally to the actual pivot angle of the hydrostatic machine. The limiting signal thus limits the output signal of the speed controller so that a rapid response behaviour is obtained and fluctuations in the settling to the desired speed are reduced.

Abstract: A motor utilizing, at least in part, buoyancy forces of different materials in a fluid is disclosed characterized by a piston assembly that requires only a single level fluid pool utilizing no pump to operate.

Abstract: A brake booster, in particular, a construction for strengthening the coupling between the brake booster and a master cylinder, is disclosed. A strengthening plate is interposed between the head of a bolt extending through an enclosed shell and the inner surface of the shell and the bolt head is ring projection welded to the strengthening plate, which is in turn projection welded to the shell while maintaining a hermetic seal therebetween at a location outside of the welding location of the bolt.

Abstract: On actuation, each pressure generator at each of a plurality of locations along a conduit develops a pressure rise in the conduit to energize a pressure sensitive device in fluid communication with the conduit. Each pressure generator includes a bulbous member which expels a quantity of fluid (air) into the conduit when depressed and a valve for segregating the volume defined by the bulbous member from the conduit except when the bulbous member is depressed to minimize dissipation by a nonactuated pressure generator of the pressure rise within the conduit and generated by another actuated pressure generator.

Abstract: A power generation system of the ocean thermal energy conversion type including one of a closed or open system and a working fluid capable of undergoing a change in state from a liquid to a vapor state and back to the liquid state after expansion. The system includes an evaporator and a condenser, and a liquid line communicating a liquid (ocean water) at a required temperature to cause condensation of the working fluid after the working fluid has been evaporated and expanded through a turbine. The liquid line in communication with cold water is characterized by a well disposed in solid land adjacent the ocean and the direct supply of water either comprising a working fluid or for evaporating the working fluid. Water flow from the system may be released to an aquaculture preserve.

Abstract: A dual fuel injector for a gas turbine power plant has fuel ducting including gas and liquid fuel ducts which can be removed easily for access to a nozzle of the fuel duct. A separate fluid ducting assembly is attached in the head of each combustor can and has an annular duct, a passage and drillings. The power plant is started on liquid fuel, and runs subsequently on gas produced in a coal gasifier. The flow of air through the duct and passage prevents any unburnt fuel or combustion products from entering the gas duct, and the flow through the drillings prevents carbon build up on face of the injector.

Abstract: A refrigerator/food warmer includes an insulated food compartment and lid. A thermoelectric heat exchanger and air circulator are mounted in the lid with both a heatsink of the thermoelectric heat exchanger and an air impeller of the air circulator above and below the lid, respectively. The air impeller above the lid draws air through the corresponding heat sink for improving the temperature differential between opposing sides of the thermoelectric heat exchanger, and the air impeller below the lid forces air of the insulated housing through the corresponding heat sink for conditioning the air hot or cold, as desired, and circulating the conditioned air throughout the insulated housing.

Abstract: A transfer system for use in transferring cryogen from a source to a point of use, comprising a flexible conduit for through flow of cryogenic fluid, heating means external of the flexible conduit arranged to provide heat to a wall of the conduit, and control means associated with said heating means for maintaining the temperature of said wall of the conduit at a level whereby cryogenic fluid flowing through the conduit in maintained in Leidenfrost flow.

Abstract: A process and apparatus are set forth for a refrigerating or freezing system wherein liquid cryogen, such as liquid air, is fully vaporized during use to avoid dangers of liquid cryogen pooling, liquid cryogen contact with apparatus surfaces or inadvertent oxygen enrichment.