Abstract: The bow sight has three slots angled to the vertical. A sight pin is adjustably mounted in each slot by threaded means connected to a guide plate and extending through the slot to receive a lock nut. The threaded means can be a sight pin or a sleeve in which the sight pin is mounted. In the latter case a lock nut is also mounted on the sight pin to fix it against rotation. The guide plate bears on and is guided by an adjacent guide surface parallel to the slot.

Abstract: An orienteering compass comprises a compass housing (3) with a movable north indicator (4) and a base plate (1) having a fixed course line (5). To enable directions to be extracted and checked in a simple fashion, and to enable a map to be read more positively when orienteering, the compass housing (3) is non-rotatably connected to the base plate (1) and the base plate together with the compass housing is arranged so that it can be pressed against and readily held on a map with the course line (5) in the desired direction. Preferably, the course line (5) extends in front of the compass housing (3) and coincides with a longitudinally extending edge (6) of the base plate (1).

Abstract: A three axis orientation sensor for sensing the orientation of an attached object such as an aircraft with respect to the earth's magnetic field. The sensor can be aligned and used in the presence of ferrous materials and magnetic fields which are inherent in the surrounding environment of the aircraft.

Abstract: A telescoping measuring rafter gauge comprising two telescoping members with locking devices. Further comprising two sliding pitch locating plates with tightening devices, where said pitch locating plates fit flush against a center ridge pole or hip rafter with graduations marked along the telescoping inner member of the rafter gauge. Hinge means are provided on the telescoping outer member.

Abstract: A hand-held instrument for leveling, and indicating and measuring angles for use with an anchored guide string, including a case, a fixed scale and a pendulum-activated indicator mounted in the case, a disc-shaped string direction sensor member rotatably mounted in the case and having a string alignment mark, and an aperture with peripherally located case axis marks for determining coincidence between the string alignment and case axis marks.

Abstract: A drafting tool functioning as a variable angle straight edge comprises an elongated rectangular main body portion made of transparent material. The lower edge of this main body portion has a first straight edge extending a major portion of the length of the main body portion from one end toward the other end to terminate at a point between the two ends. This edge is spaced a first distance from the top edge of the tool. A second straight edge parallel to the top edge and the first straight edge extends from the other end of the tool toward the termination point and is spaced a greater distance from the top edge than is the spacing between the top edge and the first straight edge. The two edges are interconnected by an offset forming a notch to receive the point of a drafting instrument at the junction of the offset and the first straight edge.

Abstract: A web that is coated or imprinted on both surfaces has a straight stretch that emerges from a dryer enclosure in which the web is heated and extends to a chill roll around which a curved portion of the web is partially wrapped. A duct-like tunnel surrounding said stretch has its outer end near the chill roll. In a preferred embodiment, a nozzle at the outer end of the upper tunnel wall blows a blade-like jet against the curved portion of the web to force it into intimate engagement with the chill roll periphery and thus prevent accumulations of solvent vapor condensate thereon. Part of the jet air deflected by the web is guided inwardly along the web by the upper tunnel wall. Air outlets just above the lower tunnel wall, near its outer end and spaced at intervals across it, provide for inward air flow under the web. Practically all vapor emanating from the web after it leaves the dryer is thus driven into the dryer.

Abstract: An automatic lint screen cleaner in an automatic dryer is provided with a foreign objects sump which provides a means for removing foreign objects from the area of the lint screen cleaner while preventing lint build up in the sump.

Abstract: A compartmentalized, variable cushioning sole construction in footwear having a top attached to an inner sole. The construction includes an outer sole and a flexible wall structure joining the peripheral edges of the inner and outer soles to form an enclosed space therebetween. This space is partitioned into fluid-tight, independently inflatable compartments corresponding to the heel, arch and ball regions of a foot. Resilient support structure in each of the compartments provides resilient weight support between the inner and outer soles when the compartments are deflated.

Abstract: An apparatus for detachably connecting a tool component to a frame component which is in turn adapted to be adjustably mounted on a vehicle. One of the components is provided with notched members for receiving engagement members on the other component. Contact members on one component are arranged to compressively engage resiliently compressible pads on the other component during entry of the engagement members into the notched members.

Abstract: A radiation base of an iron comprises a baseplate, and an injection-molded layer integrally attached to one side of said baseplate, the layer being formed of synthetic resin with low friction properties, nonviscousness and heat resistance, such as polyphenylene sulfide resin, phenolic resin or fluoric resin.

Abstract: A process and apparatus for prestretching screen fabric usable in screen printing allows desired screen tension to be achieved rapidly when the screen fabric is inserted into a screen printing frame. The screen fabric is tensioned using a tensioning device, and subsequently an alternating load is applied to the screen fabric to prestretch it. The loading may be applied along a direction parallel to, perpendicular to, or at an intermediate angle to the plane of the screen fabric.

Abstract: A safety tag holder for high voltage and other types of hazardous equipment. A flat holder, transparent on both sides with an intervening space between covers for insertion of a flat card, is constructed completely of electrical insulating material. A hook at one end of the holder is located in the same plane as the card and has a holding clip so the holder can not be accidentally removed from cables or rod upon which it is hung. A ring in the plane of the holder permits handling the holder with a pole which has a matching hook.

Abstract: Article for forming picture frames and molding and the picture frame and molding made thereby, wherein the picture frame molding includes a fusible strip running the entire length thereof and wherein the abutting sections of molding at the corners of the frame are held together by the abutting fusible strips being fused together at the corners. The frame is preferably wood and the fusible strip is preferably a thermoplastic material that can be fused or otherwise bonded to itself by for example ultrasonic welding, gluing or other adhesive bonding. Also, the dust cover or backing for the picture is fusible to the back of the picture frame sections.

Abstract: An electromagnetic display element is controlled by one or more high remanence cores which have control windings. A circuit is connectable to an A.C. outlet and provides to the windings a D.C. pulse in one sense (to switch the display element in one direction) when the circuit is connected to the A.C. outlet. The circuit included a capacitor charged during such connection. The circuit is designed so that, on its disconnection from the A.C. outlet, the capacitor discharges through the winding in the opposite sense and switches the display element in the opposite direction.

Abstract: A display structure is formed by cutting and scoring a unitary blank of sheet material to include body panels, joining flaps, dividers and cutout corner viewing windows thereon. The unitary blank is folded in a standard folding and gluing machine to provide a flat structure which upon being erected forms four display boxes which are connected in series by joining flaps located at their diagonally opposite corners. A cutout corner viewing window or a corner viewing window created by forming a divider may be provided on the front adjacent body panels provided on the blank for selected ones of the boxes in the series. Such a structural arrangement enables the display boxes to be nested together to form a single carton with the corner viewing windows enclosed therein.

Abstract: A chamber alignment and safety system for firearms consisting of longitudinally extending slide mechanism axially aligned with and pivotally connected to the barrel and bolt housing, said slide mechanism including means for moving said pivotal connections away from one another, whereby the breech may be opened to expose the chamber for loading ammunition therein and for unloading spent cartridges therefrom by separating and rotating the barrel relative to the bolt housing, and a safety device having a rack carried by the bolt assembly and a pinion gear secured in the bolt housing meshed with the rack for driving the bolt assembly into and away from firing alignment with the chamber, said safety device also having trip means connected to a trigger sear for locking and unlocking said sear in triggering position responsive to movement of said rack and gear.

Abstract: An improved bait holding apparatus for fishing including a housing having a first container disposed therein and a second container disposed within the first container. A light source is connected to the housing and the light therefrom is directed towards a side of the first and second containers. Since the sidewalls of the containers are constructed of transparent or translucent materials, the light shines on the bait and also shines out of the top of the containers for facilitating the baiting of a hook. A second light source is connected to the housing for illuminating the area outside of the container and an aeration pump is provided for selectively replenishing the air in water containing live minnows or the like. A mechanism is also provided for easily using power from the battery of a boat or automobile as a substitute for portable batteries disposed within the housing.

Abstract: A disposable animal trap for pests, such as mice and rats, comprising pivotal top and bottom members which are spring loaded and which form a retentive enclosure when triggered. The triggering mechanism is the bait itself which is solid and preferably edible and which supports the top and bottom members in an open, animal inviting, position and which triggers the closure of the members when eaten, collapsed, or moved, to retain the pest. The spring may be integral with the top member or a common rubber band may be used as the spring. The top and bottom closure members are preferably made of a high impact molded plastic to resist the gnawing and clawing action of the animal, as well as for cost efficiency.

Abstract: A dome covered bait carrying animal trap employing a scent attraction through passageways in the base in which an anti-friction support for the trip-trigger results in an improved performance snare trap kill requiring no contact by the user of the traps with the animal caught and eliminated.

Abstract: A window garden is comprised of a fixed frame secured to the perimeter of a window opening in a dwelling house and has an outwardly moveable sash frame fixed and hingeable to the top edge of the window frame. A pair of transparent domed members having dead air or vacuum therebetween form a plant displayable enclosure in the window which is protected from frost and obtains maximum winter sunlight when oriented in a southern exposure of a dwelling. Means such as nylon or polypropelene screen material are provided between said fixed and moveable frames to exclude insects when the domed sash frame is moveable outward to allow air to enter therebetween.

Abstract: A synthetic surface, such as artificial turf, rubberized asphalt, concrete composition, particulate mixtures and the like, is applied on top of a subsurface base system, which in turn is on top of a subgrade. A liquid impervious membrane is positioned between the subgrade and the base system. The base system comprises an upper layer of sand-containing particulate material in which liquid characteristically moves in the vertical direction and a lower layer of gravel in which liquid characteristically moves well in the horizontal direction as well as downwardly. The material of the upper layer does not significantly penetrate into the gravel. The base system has a non-rutting upper surface. The non-rutting surface is accomplished by planting grass, cutting the grass at least once, and then killing the grass. The synthetic surface is then applied. A conduit system is positioned in the lower gravel layer of the base system, and a water reservoir is established in the base system.

Abstract: A door operating device for operating by means of a DC motor the slide door of a slide door unit including an opening formed in the exterior panel of an automobile, the door designed to be arranged flush with the exterior panel when closed, guide rails extended along the upper frame, the lower frame of the opening and the outside surface of the exterior panel, respectively, and guide rollers for guiding the door along the guide rails. A first turnable arm is supported rotatably on the floor of the automobile, a second turnable arm is supported rotatably on the free end of the first turnable arm and a driving wheel is supported rotatably on the free end of the second turnable arm. The output torque of the motor is distributed into a torque for rotating the driving wheel and a torque for rotating the first turnable arm.

Abstract: A self-adjusting window frame unit having a corner assembly that will permit continued adjustment of the frame while providing strength for the frame at the corners and while maintaining a fully insulated frame. The unit includes right-angle corner members adapted to receive window end members having angled ends and with the corner members having projecting legs with extending side faces on opposite sides thereof to fill spaces left by notches provided in the end members. Alternatively the end members may extend into opposite legs of the corner members and the corner members may be hinged to permit relative movement of the end members to fit a window opening. With the hinged corner member the legs of the corner member are overlapping so that no air gap will develop between the legs as the legs move relative to one another.

Abstract: A double disc grinding machine comprising a wheelhead assembly, a base for supporting the wheelhead assembly for axial displacement relative thereto, the base including a front wall having a front trunnion secured thereto and extending horizontally therefrom, and a rear wall having a rear trunnion secured thereto and extending horizontally therefrom in coaxial relation with the front trunnion, and a principal machine frame including front and rear walls, the machine frame rear wall supporting the rear trunnion for pivotal displacement about its axis and for limited pivotal displacement about a mutually perpendicular vertical axis and structure for horizontally displacing the rear supporting structure along the rear wall of the frame thereby angularly displacing the front trunnion, and the machine frame front wall supporting the front trunnion for pivotal displacement about its axis and for limited pivotal displacement about a mutually perpendicular vertical axis.

Abstract: Semi-conductors can be polished with greater efficiency using as a polishing agent a blend of colloidal silica or silica gel, a water-soluble amine and a water-soluble quaternary ammonium salt or base.

Abstract: A grinding tool with a cylindrical sleeve, having several longitudinally extending slots penetrated by radially shiftable wedge-shaped bars with abrasive outer faces, is provided with a mandrel received in the sleeve and axially displaceable therein for shifting the bars radially outward and inward. The mandrel has longitudinal guide grooves with sloping bottoms, engaged by the correspondingly sloping inner faces of respective bars, and a shallower annular groove of frustoconical bottom intersecting these guide grooves; segments of a frustoconical ring, lodged in the annular groove and projecting into the intersecting guide grooves, engage in mortises of adjacent flanks of respective bars sliding in the guide grooves for positively shifting the bars when the mandrel is displaced in one of the other axial direction.

Abstract: A flashing system including a fiber reinforced silicone sheet having substantial vapor permeability and water resistance is pre-assembled with a pair of ductile non-corrodable strips embedded in edges of the sheet. The system also includes the use of headed self-drilling fasteners to facilitate installation in metal buildings and to create a seal at the point of fastening.

Abstract: A method of constructing a prefabricated dwelling on a selected lot, from at least a plurality of wall panels, symmetrical two by two with respect to a plane, each wall panel having a trapezoidal shape of which the parallel sides correspond to the vertical edges of the panel and the non parallel sides are inclined in the same direction and correspond to the upper and lower edges of the panel, and a plurality of identical roof panels between them; each roof panel having the shape of a lozenge, the wall and roof panels all having a shape-holding structural frame suitable for assembling them together in a rigid manner. According to the invention, the required foundations are provided by the selected lot itself and a base is provided to receive the wall panels directly, this base having the overall shape of the grouping of at least three regular hexagons, equal to one another and adjacent at least two by two without being in alignment.

Abstract: A seal assembly arranged and constructed for an operable or portable wall panel to provide top, bottom or side seals therefor is disclosed. A channel shaped member is mounted in the panel in fixed position, with the open end of the channel extending outwardly to an edge thereof. A seal actuator means is operatively coupled to a spring loaded, shiftable seal assembly which is mounted in the channel and is held in a latched, retracted position. The spring-loaded seal assembly is shifted inwardly of the channel to release a latch means so that the springs are released to permit the seal assembly to shift outwardly of the channel to its extended, self-leveling sealed position.

Abstract: An elevator cab is constructed of thin, somewhat semirigid skeleton. Panels, made of expanded core plastic, or honeycomb paper, are attached to the skeleton, thereby forming a very light and rigid cab. These panels are attached by means of releasable hook-like fasteners, thus permitting selective removal of the panels from the skeleton. Due to strategic location of the fasteners on the skeleton, the panels, when attached to the skeleton, create a rigid cab.

Abstract: A building panel (1) made with a first outer layer (2), an interior core (4) of foam material, and a second outer layer (5) including metal film. Retention members (3, 3') are attached to the first outer layer (2) and have retention elements (12, 12') that extend into the interior core (4).

Abstract: A molded insulating insert of expanded polystyrene has a central section and hingedly connected side sections which are bendable toward each other to bring the insert to a U-shaped configuration for insertion in a building block cavity. The hinges are formed to provide resistance to full ninety degree bending of the side sections so that the insert side sections are inclined slightly outwardly in a free condition. On flexing inwardly and insertion in a block cavity the side sections tend to spring outwardly and frictionally grip the walls of the cavity. Lug-notch connection means frictionally retain the inserts in the U-shaped configuration and prevent dislodgement of sections in the event of hinge rupture. In molding the inserts, a transfer process is employed with the hinges partially formed in a hot mold and thereafter fully formed in a cold mold. The polystyrene is compressed in the hinge area to a higher density for hinge integrity. Density in the hinge area is approximately doubled.

Abstract: Means for interconnecting adjacent panels of partitioning comprising a flanged member adapted to be secured to or formed integral with the vertical edges of each panel, each flanged member being provided with one or more flanges which mate with corresponding flanges of the flanged member of an adjacent panel to prevent separation of the adjacent panels along the line of the panels, each flanged member also being provided with an open longitudinal channel adapted to abut with a similar open longitudinal channel on the flanged member on the adjacent panel to define a closed channel when in the mating position and a locking strip adapted for engagement in the closed channel to prevent separation of the flanged members in a direction substantially at right angles to the line of the panels.

Abstract: A shoring system having base frames with legs preferably of extruded aluminum in oval cross-section (for optimal support with minimal use of materials) and optionally having three T-slots formed integrally therewith and extending the length thereof (for versatility in bracing), and preferably in combination with telescoping extension frames formed of extruded aluminum and adjustably inter-connected with respective uppermost base frames by U-pins fastened through dual locating holes spaced in pairs along each extension frame leg. The dual locating holes are formed in thickened walls on either side of a central hollow core in each extension frame leg (to accommodate retraction of a jack screw mounted on the leg).

Abstract: A suspended ceiling system for supporting ceiling panels and the like includes a plurality of main runners, connected in end-to-end relationship to form parallel beams, and a plurality of cross runners interconnecting the parallel beams to form a grid.Each main runner includes an end connector, having an opposed pair of laterally projecting hooks which form a guideway for receipt of the forward end of a corresponding main runner end connector. The face of each end connector is continuous, from one side of the hooks to the other, to provide a bearing surface for sliding the end connectors through their respective guideways. Respective apertures and detents are formed in each end connector to provide opposed engaging surfaces for interlocking the end connectors in side-by-side relationship.The cross runners include respective end connectors which interlockingly engage when inserted from opposite directions through a slot in the web of the main runner.

Abstract: A rotary inserter for inserting insert material into envelopes in a continuous unidirectional motion. The inserter has envelope and insert clamps supported on separate rotating arms such that envelopes and inserts carried by the envelope and insert clamps overlap at one point during rotation. Separate envelope and insert loading stations are provided whereat envelopes and inserts are supplied to the respective envelope and insert clamps.To facilitate inserting of the insert into the envelope, vacuum assist means are provided to spread the envelope preparatory to receipt of the insert. An output conveyor is provided to withdraw the envelope bearing insert following completion of the inserting operation.

Abstract: A device for disposing of a contaminated suction tube connected to a storage container for glass-enclosed radioactive waste material by inserting the tube in the container for ultimate disposal with the container. The device consists of a metal sleeve that is mounted on the bottom wall of the container and extends upwardly into the container and an inner tube which slides in the sleeve. The suction tube is connected to the lower end of the inner tube. Detachable connecting means, such as solder, fixes the inner tube and hence the suction tube to the sleeve until the glass filling operation is over. At this point the solder melts and the suction tube and inner tube are free to be inserted into the container by sliding the inner tube upwardly in the sleeve.

Abstract: Method of discharging objects from holders transporting the objects at a first velocity from a first station where the holders successively take up the objects to a second station at which the objects are to be placed, wherein as the objects approach the second station, they are given a second velocity having a direction the angle of which relative to the first velocity gradually increases within a predetermined angular range thereby to decrease the first velocity, and when the first velocity has been substantially offset by the second velocity, the objects are successively discharged from the holders so as to be placed at the second station. A holder suitable for use in the method is also provided.

Abstract: Apparatus for shaping liquid containing packages is disclosed. The apparatus comprises a take-off conveyor which includes a multitude of support parts which form a conveyor belt. The support parts are movable with respect to each other and point transversely outwardly from the conveyor path. A plunger moves out from the surface of the support part towards a side wall of the package to indent the same at a certain portion of the package formation cycle. A switch cam plate or the like causes movement of the plunger between a contact position in which the plunger contacts and indents a portion of the package and another position in which the plunger does not engage the package.This application is a continuation, of application Ser. No. 198,161, filed Oct. 17, 1980, now abandoned.

Abstract: In a roll baling machine having a floor roller and an apron which cooperate in suitable manner to form roll bales, a sprocket-shaped member is provided to support the transverse tubes of the apron against bending and twisting loads during bale formation and thereby prevent damage to the apron.

Abstract: The invention is a cooling airflow modulation system for use on gas turbine engines. The system utilizes one or more circumferential manifolds for collecting and providing a source of high-pressure cooling air to hot turbine parts. The cooling air is directed to the manifolds through valved passageways that collect compressor discharge air and direct that air radially inwardly and axially downstream to manifold locations. Multiple passageways aand manifolds provide a means for maintaining pressure in the hot turbine parts while cooling airflow volume is being modulated through selected manifold and passageway combinations.

Abstract: An integrated coal-fired gas turbine power plant includes a hydraulic compressor for providing pressurized air to a coal combustion system and cooling air to the gas turbine.

Abstract: The pressure vessel of the gas turbine-steam power plant is provided with a recuperator and a heat exchanger in order to reduce the temperature of the hot flue gas before separating out gas-entrained particles. The dust separator is connected to the recuperator on a secondary side so that the hot gas can be reheated for delivery to the gas turbine. By cooling the flue gas before entering the separator, use can be made of electrostatic dust filters or cloth filters.

Abstract: A gas turbine engine terminates at its rear in a jet pipe (14) having a fixed area nozzle (15). The engine is provided with one or more target type deflector doors (18) which in a first position constitute a rearward extension of the jet pipe (14) and define an effective exhaust nozzle (19), downstream of the nozzle (15) of the jet pipe 18, which is of smaller area than that of the jet pipe. The door, or doors 18, are movable from the first position to a second position where the nozzle 15 of the jet pipe 14 is exposed and constitutes the effective exhaust nozzle of the engine. In the second position the door, or doors 18, lie predominantly transverse to the length of the jet pipe 14 to redirect the hot gas efflux from the jet pipe 14 and reduce the forward thrust produced by the engine.

Abstract: An apparatus for igniting the particulates trapped in a particulate filter used with a diesel engine supplied with fuel with an agent for reducing the ignition temperature of the particulate when it is determined that a predetermined concentration of particulates at which the particulates will undergo self-sustained combustion have accumulated in the filter.

Abstract: The invention relates to hydraulic control unit for a power steering assembly. The unit is of the type having a metering motor and steering wheel actuated valves for directing metered, pressurized fluid to one selected port of a steering servo-motor and drawing fluid from the other port of the servo-motor to a tank. The invention involves a particular regulating valve for directing pressurized fluid to consumer units when the steering control is in neutral.

Abstract: A torque control for a drive system having a hydraulic transmission connectable to a prime mover (30) and having a pair of hydraulically-connected displacement devices V and F, with one device having variable displacement, a torque sensor (35) generates a torque signal representative of prime mover output torque in either driving or braking mode, torque demand generators (47,47') generate a torque demand signal selectively in either driving or braking modes, a governor valve (63) compares the torque signals and generates a control signal and a control servo 17, responsive to the control signal, controls the displacement of the variable displacement device V to eliminate any difference in torque signals.

Abstract: A wave energy harvesting apparatus includes a float which rises and falls with wave movements across the surface of a body of water. A hollow tube having a turbine located inside thereof is located vertically downward from the float and is connected to the float by connecting members. The hollow tube is positioned at a depth which is essentially displaced sufficient from the surface of the body of water so as not to be influenced by vertical water movement associated with the waves moving across the surface of the body of water. The tube, however, is moved upwardly and downwardly through the water at that depth in response to movement of the float by the waves on the surface of the water. Movement of the tube upwardly and downwardly at the depth causes rotation of the turbine located in the tube, with the turbine in turn rotating the connecting member to transfer the rotational motion to the surface, wherein this rotational motion is then utilized to drive a generator or the like.

Abstract: A system for providing thermal energy output at intermediate levels below about 120.degree. C. uses both a conventional heat source input and an ambient heat source input to the hot and cold ends, respectively, of a Vuilleumier cycle machine. While converting thermal energy to work in both a heat engine process and a heat pump process, an intermediate working chamber integral with both processes is arranged to provide thermal output at the desired intermediate level. By maintaining the pressure ratio within predetermined limits and observing a number of temperature relationships desirably high coefficients of performance are provided with useful levels of output in a reliable system having long operating life.