Abstract: Dental articulator formed with individually adjustable, upper and lower carrier plates, each having means for quick-coupling to one of an interchangeable pair of planar mounts (each mount adapted to adhesively support an assembled denture against one of its faces). A pair of matching dentures can thus be assembled either within or away from the articulator, mounted and tested for occlusion therein, and subsequently reworked (as often as necessary) either within or when removed from the articulator. Essentially a pair of thrust-coupling or threaded attachment means on the carrier plate or on the mount, engage corresponding sockets of the opposite member. Formulation of the mount of inexpensive plastic enables discard after single use.

Abstract: A phonograph record groove eccentricity tester senses the eccentricity of the circular groove at the inner side of the spiral groove, by means of a groove engaging stylus on a pivoted arm operating a sensor that produces an output signal a peak value of which is displayed.

Abstract: A machine tool fixture with particular utility as a mounting and backing plate for a sheet cutting die is provided with a unique pattern of tool mounting slots universally adaptable to a wide range of die sizes and to any die tool in a capital inventory. Also disclosed is a tool mounting point locating jig and method of use corresponding with the present fixture.

Abstract: Level indicating devices wherein at least a side portion of a bubble cavity is defined by a reflecting surface having at least a linear cross section lying generally in a plane aligned with or paralleling a light source and a bubble image observer (i.e. person or sensor).

Abstract: An electronically operable multiple-choice response evaluating apparatus comprises a housing having a plurality of first input switches which are manually actuable to introduce a code of indicia representative of a question and a plurality of second input switches which may be manually actuated in order to introduce indicia representative of a selected one of a plurality of possible answers for a question. The housing includes electronic processing means, such as a microprocessor, which compares the code of indicia representative of the question with the indicia representative of the selected answer and determines whether or not the user selected the proper answer. The apparatus may include one or more sheets having the questions listed thereon and with the identifying code of indicia for each question. Two or more answers may be provided on the sheet with each question, and each answer will have indicia representing that particular answer.

Abstract: A seat cushion for providing realistic acceleration cues to an aircraft simulator pilot. A plurality of contiguous seat cushion compartments with each including an air cell with a non-compressible surface underneath the air cell are provided with apparatus for separately controlling the pressure in the air cells. Apparatus are provided for initially controlling the air pressure in the air cells to allow the two main support areas, the tuberosities, of the simulator pilot to touch the non-compressible surface and thus begin to compress the flesh near these areas. Thereafter during a simulated flight apparatus are provided for controlling the air pressure in the cells to simulate the events that occur in a seat cushion during actual flight.

Abstract: A flight simulator which abandons the traditional aesthetic preference for an aircraft-like flight compartment exterior in favor of an open strut cockpit construction affording convenient access to cockpit equipment for maintenance purposes. The simulated flight compartment, electronic equipment, a visual display and maintenance walkway are all enclosed within an octagonal enclosure and mounted on a motion system.

Abstract: A marksman training system is disclosed as including a translucent diffuser arget screen adapted for producing a bright spot on the rear surface of the target screen in response to receiving a laser light beam on the front side of the target screen that was fired from a laser rifle. A television camera scans the rear side of the target screen and produces a composite signal representing the position of the light spot on the rear surface of the target screen, after which the composite signal is broken into its X and Y Cartesian component signals and a video signal by a conventional television signal processor. The X and Y component signals consists of numbers of pulses which are shaped and then uniquely counted by digital counters, stored in registers, and converted to a pair of proportional analog voltage signals by digital-to-analog converters.

Abstract: A digger housing having a trencher extendable therefrom is mounted on a truck such that it pivots about two axes. A rod slot having a slanted bottom is dug by pivoting the housing and trencher about the axes. An anchor slot having slanted sides, with one of the sides intersecting the rod slot, is dug by extending the trencher from the repositioned housing. An anchor is buried with an anchor plate in the anchor slot and a rod in the rod slot.

Abstract: Ironing machine comprises a belt conveyor positioned above a stationary ironing plate, means for maintaining the relative horizontal positions of the plate and the conveyor, and means for raising the conveyor from the plate. There is unobstructed access to one side of the machine when the conveyor is in the lowered, operating position.

Abstract: A display device used to display bus schedules, bus routes, advertisement or other graphics is described which comprises an outer clear or transparent sleeve, a middle sleeve which graphics are attached or wrapped around, and an inner sleeve which is threaded on both ends. Attached to the inner sleeve via the threads are top and bottom end-plate caps. Both the top and bottom end-plate cap contain a groove so placed such that when the caps are screwed onto the inner sleeve the outer transparent sleeve fits into the groove on the top and bottom cap. The display device is attached to a support post or other structure via bolts and nuts passing through the inner sleeve and the post or other support structure.

Abstract: A keepsake album has a frame assembly imbedded in its padded front cover for displaying a personalizing photograph in recessed relation to the outer-surface of the cover. A photograph-receiving tray which forms a part of the frame assembly is disposed within a complementally configured blind opening in the cover and is solidly undersupported by the exposed rigid backing member of the cover along the bottom of the blind opening. The tray is adapted to releasably retain a decorative frame in abutment with the outer surface of the cover for holding the desired photograph in a displayed position on the cover.

Abstract: The present invention is related to a rectilinear sliding panel display used for displaying pictures and/or messages. A plurality of plate assemblies, each comprising a plurality of plates positioned on top of each other, are provided, wherein the assemblies are positioned adjacent to each other. The adjacent visible plates of the assemblies form the picture and/or message. Also provided are a plurality of links corresponding in number to the plurality of plates. The links are positioned behind the rear face of the plate assemblies, wherein each of the links is coupled to one corresponding plate in each of the plate assemblies. A drive means is provided for sequentially operating the links. The drive means comprises a plurality of stacked rings, each of the rings being coupled to one of the links. A shaft means is provided for sequentially engaging each of the rings and for rotating the ring in response to the rotation of the shaft means.

Abstract: A hoop-shaped device for displaying information such as the name of a football or basketball team is disclosed. A ball-shaped member is attached to the center portion of the device, and this ball member may be convertible from the shape of a football to that of a basketball, for example. A series of creases are provided in the hoop portion for ease of installation on uneven surfaces.

Abstract: A cartridge/carrier locking device is used for an automatic gun loading arrangement of a type for removing a cartridge from a magazine onto a carrier by releasing it from a locked state for firing and for pushing it up into a barrel chamber by an upward sway of the carrier which takes place in response to the forward stroke of a breech block. A latch plate which is provided with a first claw part at its forward end for locking the cartridge and a second claw part at its rear end for locking the carrier, is pivotally attached to an inner wall of a receiver containing the automatic gun loading arrangement. The first and second claw parts serve, respectively, to lock the cartridge and the carrier as the claw parts alternately protrude into the inside of the receiver in a swaying fashion. A spring is arranged to push the second claw part of the latch plate to the inside of the receiver.

Abstract: A portable blind for a hunter, photographer, naturalist, or the like, comprising one or more frame assemblies with a flexible exterior covering. Each frame assembly includes upright legs which are joined at the upper end thereof by a frame member. The frame assemblies are fabricated from lightweight materials such as aluminum or plastic tubular members or inflatable members which may be easily transported to a desired site. A flexible exterior covering is connected to the frame assemblies and preferably includes one or more viewing ports. At a selected site the frame assembly or assemblies are set up and operably positioned to form a shell with a covering and viewing port in an upper portion of the blind.

Abstract: An assembly kit for assembling a toy vehicle has an upper part provided with an undercut groove on a lower end surface thereof, and a lower part including structural elements each provided with a bar-shaped undercut element engaging the undercut groove so as to connect the lower and the upper parts with one another. The upper part is hollow, whereas the lower part is plate-like and is additionally provided with two axle end portions for mounting wheels of the vehicle thereon. The bar-shaped undercut element has an elongated groove and is located between the axle end portions in alignment with the latter.

Abstract: A set of building blocks is used for educational aid as well as decoration and readily assembled to form a tree-like structure, which comprises several building elements adapted to be coupled by plug and socket connectors to form a trunk as well as branching portion of a tree-like structure, and several base boards which can be connected side by side to construct a base as a ground member of the tree-like structure.

Abstract: A toy milkable animal figure such as a cow which includes a chamber for liquid, an inlet to the chamber, and an outlet from the chamber. The chamber defines a flexible udder having at least one teat with an openable aperture. The aperture comprises the outlet. The udder may be manually manipulated by a child-user as by squeezing to cause release of the liquid through the aperture. The animal figure may include a pump which may be manually operable, as for example, by pumping the tail, and the inlet to the chamber may be connected by an inlet tube to the mouth of the animal which may be immersable in a source of water. The pump may include an overflow system which permits water to be pumped through a return tube in the figure and back to the source of water when the chamber is filled.

Abstract: A modified locking-type wrench is combined with a disposable syringe and an injector barrel having a tapered tip to provide a mini-injector apparatus for injecting, under pressure, growth regulators and other solutions into the vascular systems of seedlings and branches of relatively small diameter woody plants.

Abstract: A plant support made in two sections of wooden, plastic or metal material, so that the sections can be added to one another to increase the length of the support as the plant grows; AIR VENTILATION SLOTS for prevention of SWELLING, OXIDATION and CORROSION of the said MATERIALS in order that the hereby above Adjustable Plant Support is in fact a TRULY Adjustable Plant Support as claimed by me above and hereafter.

Abstract: An emergency escape wall structure actuated either by pressure against the wall or automatically actuated by the presence of heat, smoke, gas, or oxygen deficiency detectors or push buttons, any one of which actuates the automatic means or by a hand lever which manually opens the structure. Upon actuation, an escape panel falls outwardly and downwardly creating a massive opening to permit the escape of a large number of persons in a brief time period.

Abstract: Recipro-finishing methods and machines in and by which workpieces having a curved profile are subjected to both reciprocating and rocking movements in a finishing trough containing finishing media.

Abstract: An optical lens grinder device including a main base and a lens carriage pivotally slidably connected along one edge to the base. A first motor mounted on the base drives a pair of closely spaced apart grinder wheels, one for shaping and sizing a lens blank, the other for peripherally beveling the edges thereof.

Abstract: A grinding wheel in which at least one core material of open-mesh fabric woven of glass fiber yarn and at least one core material of floral design made by forming glass fiber yarn in floral pattern of long and short petals are embedded as reinforcing core materials.

Abstract: A contact lens holder or tool for grinding or polishing, including a handle, a tubular receptacle open at its outer end and having a shaft protruding from its inner end which is rotatably mounted in the handle, a deformable fluid chamber closely fitted into the receptacle and having an open outer end protruding therefrom, a plug having an axial passage leading from an arcuate, external, lens-holding surface to the interior of the fluid chamber, an opening in the tubular receptacle wall, and an insertable and removable mechanical evacuator having a portion inserted into said opening to deform the fluid chamber, so as to partially evacuate the chamber and hold a lens against the arcuate surface of the plug, and removed from the opening to permit non-eccentric spinning of the receptacle, fluid chamber, plug and lens with respect to the handle, while the lens is being ground or polished.

Abstract: An auxiliary device for facilitating re-grinding and sharpening of spiral drills used by a home or do-it-yourself amateur in conjunction with a conventional grinding machine mounted on a table and having a rotating grinding wheel or disk exposed on a horizontal shaft. The device comprises a fork-shaped bracket including means for clamping to the table. Grooves are provided in the upper surfaces of the forks for bearings which rest in these grooves and are aligned thereby. The device includes a swiveling part which is loosely held into the grooves to accomodate the drill workpiece which is to be reground. Axle journal members in the bearings provide the swiveling movement of the workpiece.The swiveling part is provided with a groove between the axle journal members into which the workpiece is inserted and this groove has a clearance below the axis of the axle journals and is directed slantingly toward the grinding surface or path of the grinding disc thereby providing the desired re-grinding angle.

Abstract: A sanding head providing for the extraction of dust produced during sanding, and comprising a shaft casing, a shaft rotatably mounted in the casing and capable of being driven by motor means, a circular backing plate of a ventilated type, which is connected to one end of the shaft, said circular backing plate being provided in its front face with ventilating grooves and having in its center a hollow cylindrical element, which has a closed front end and which is provided, adjacent its closed front end, with lateral windows communicating the inside of the hollow cylindrical element with the ventilating grooves, and a means for detachably fixing an abrasive disk to the closed front end of the hollow cylindrical element. The hollow cylindrical element of the plate is rotatably mounted in the shaft casing at one end thereof, whereas the shaft is rotatably mounted only at the other end of the casing.

Abstract: A method and apparatus for manufacturing a twisted ceramic turbine wheel from an electrically conductive or electrically non-conductive ceramic mass with the aid of spark erosion or of ultrasonic machining and with the aid of profiling tools used therewith which are correspondingly matched to the desired profile shape, by means of which the pressure side and the suction side are to be worked; the two profile surfaces, i.e.

Abstract: A device for deburring workpieces of rubber or plastic or the like includes an insulated chamber through which the workpieces traverse and a centrifugal throwing wheel for projected granulated material therefrom and means for embrittling the burrs of the workpieces with the blower having a vertical axis of rotation and projecting the granulated material horizontally therefrom and having a conical deflector in the blasting plane opening downwardly toward the workpieces.

Abstract: Apparatus and method are provided for producing a blast pattern with a centrifugal throwing wheel for alternatively providing a blast pattern having a conventional length and for providing a blast pattern having a shorter length than heretofore possible with a standard throwing wheel.

Abstract: A film supporting frame structure suitable for use as a residential storm or insulating window, is assembled from frame members having upper and lower channels, and secured together by corner brackets having prongs which mate with the lower frame channels. The assembled frame is covered with a flexible film which is stretched and held securely in the upper frame channels by interlocking tee-members. To facilitate mounting, the frame is provided with a flange and a pressure sensitive resilient adhesive strip.

Abstract: A double insulated, ventilating skylight for a building or the like, comprising inner and outer substantially co-extensive frames, each of the frames having at least one substantially rectangular vertical wall and an upwardly directed window panel, the vertical walls having substantially co-extensive openings therethrough. Inner and outer doors are hingeably mounted on the inner and outer frames respectively to close the openings or to provide ventilation therethrough. Means for opening and closing the inner door from within the building is provided, with linkage means connecting the outer door to the inner door so that both doors open and close simultaneously.

Abstract: This invention relates to a window with increased resistance to fire, consisting of at least one pane of glass, such as soda glass, mounted in a metal frame in such a way that during a fire the border and edge of the side exposed to the action of heat, or in some cases the borders and edges of both sides, are exposed to the heat.

Abstract: This invention relates to a fire-proof window consisting of at least one glass sheet mounted in a frame and which permits generally uniform heating of the glass sheet when exposed to the effect of heat in a fire thus preventing breakage due to the buildup of stresses. Uniform heating is produced by the inclusion of a listel along the edge of the glass which is moved away from the glass by means of a member disposed between the listel and glass. This member expands in volume under the effect of heat to push the listel away from the glass sheet.

Abstract: While thermoforming an article skin-wrap packaging, the article being disposed on an air-tight supporting plate firmly applied on an evacuated chamber and a plastic film displaced parallel to the supporting plate to firmly engage the article and the supporting plate, vacuum is provided in the wrapping by means of at least one suction tube or nozzle temporarily placed between the supporting plate and the film.

Abstract: Method and apparatus for fixing a protective sheet to a roll of material such as fabric or carpet, and having a longitudinal bore therein, in which the roll is covered with a sheet of paper or plastics material, for example, the width of which is greater than the width of the roll, the ends of the sheet are folded over the ends of the roll and are inserted into the ends of the bore, and a gripper element is introduced into the ends of the bore and is deformed permanently by expanding it radially outwardly into contact with the ends of the sheet and urging these ends against the inner wall of the bore.

Abstract: In a vacuum-sealing method and apparatus for various articles to be packed under vacuum, the improvement consisting in that a hot-air circulating closed-loop path is provided within the vacuum-packaging enclosure, so as to have hot air circulating unidirectionally in order to sweep the package virtually concurrently with the evacuation and autogenous welding stage. A swingable flap valve inserted in the hot-air path upstream of the specially provided heating means ensures such a unidirectional hot air flow. By so doing, the vacuum-packing operations can be more efficiently and quickly completed. The package wrappers are made of a thermoplastics, heat-shrinkable material.

Abstract: A cutting blade assembly for a lawn mower is provided with mechanism for prestressing the blade to lessen vibration during use and also for adjusting the blade so as to accurately position and align the blade relative to the associated blade housing so that the blade operates in a horizontal plane. This prestressing and adjusting mechanism may also be employed to compensate for any misalignment in the mounting of the blade spindle relative to the blade housing. In one specific embodiment in which the blade is bolted to a blade support bar which, in turn, is fixed to a vertical spindle mounted centrally to the blade housing, the prestressing and adjusting mechanism is achieved by pressure-applying bolts or screws threaded through the blade support bar on opposite sides of the spindle so as to be engageable with the blade. Advancement of the screws serves to deflect the blade downwardly to prestress the blade and/or to position the blade in a desired horizontal plane.

Abstract: An adapter pulley for increasing the speed of a spindle drive of a rubber covering textile machine includes an adaptor body member having a tapered drive belt transfer surface tapering inwardly to a reduced drive pulley portion.

Abstract: A high strength polyester fibrous product reduced in heat build-up and improved in durability and useful for reinforcing rubber materials, which can be prepared by twisting drawn yarns obtained by (1) melt spinning a polymeric composition comprising polyethylene terephthalate as the main polymer component and at least one methylene group-containing polyester in such an amount that the proportion of the total number of methylene groups to the total number of terephthalic acid residues in all the polymer components is more than 2.0 and less than 2.

Abstract: Improved pneumatically operated yarn threading mechanisms are provided for textile yarn processing machines, such as a two-for-one twister or the like, having spindle assemblies each including a rotor mechanism with a yarn passageway extending along the axis of the spindle assembly and radially out, a stationary carrier mechanism carrying a hollow yarn supply package and including a hollow hub portion extending through the yarn package with a yarn passageway extending along the axis of the spindle assembly and joining with the rotor mechanism yarn passageway. The threading mechanisms automatically thread yarn withdrawn from the supply package through the passageways and includes air injector nozzle positioned at the juncture of the yarn passageways for selectively creating an air suction and positive air jet through the respective yarn passageways and an air duct for selectively supplying air under pressure to the injector nozzle from an air supply connector moved into and out of connection therewith.

Abstract: The present invention relates to a method of producing a twisted polyester filament yarn having a high level of twist used for a woven or knitted crepe fabric.A method of this invention comprises imparting a high level of twist to a polyester filament yarn which has particular properties, and heat setting said twisted polyester filament yarn. The first of these properties which the polyester filament yarn has is that a boil-off shrinkage in boiling water is in the range of 0% to 5%. The second is that a thermal shrinkage stress at 140.degree. C. in hot air is more than 0.03 g/de. The third is that a ratio of a thermal shrinkage stress at 180.degree. C. in hot air to a thermal shrinkage stress at 140.degree. C. is more than 1.0.The polyester filament yarn which has above mentioned properties can be obtained by repeating heat treatment several times at a temperature from 160.degree. C. to 220.degree. C.

Abstract: A method for producing ingrain spun-like yarn simulating a blended staple yarn is described wherein continuous filament yarn is produced which has characteristics similar to blended staple spun yarns. Fabrics made from the yarns described herein provide a fine grained heather appearance without the normal moire or plaiting effect seen in previous ingrain continuous filament yarn fabrics. The unusual continuous filament yarn described herein is made by a texturing process which involves the combination of two or more differently dyeable continuous synthetic yarns which are false twist textured followed by overfeeding to an air bulking means. The preferred method utilizes false twist texturing of synthetic filaments such as polyester, nylon, cellulose acetate or cellulose triacetate and mixtures thereof wherein two differently dyeable yarns are combined with an air bulking jet interposed to act on the false twist textured yarn while it has a high residual torque and subsequently decaying said torque.

Abstract: A device for positioning the individual links of a length of chain having nks to be welded is disclosed. The device is used in connection with a chain welding machine wherein a length of chain is advanced step-by-step upwardly over a vertex defined by a saddle at which a welding station is located and then downwardly. The saddle is advantageously formed of a generally cylindrical, horizontally extending bolt affixed to the machine and which has a flattened top portion to which each chain link to be welded is advanced then erected for welding. Alternate links arrive at the flattened top of the bolt with the planes of successive links arranged at inclinations of 45.degree. to either side of a vertical plane containing the axis of the length of chain under the influence of the shape of the saddle and gravity.

Abstract: A hydraulic pump unloading system having an engine driving two hydraulic pumps which are connected in parallel to a load-supporting member. An unloading valve is connected in the hydraulic line with one of the two pumps and is shiftable between positions for directing flow to the load and for directing flow to a reservoir, depending upon the pressure and or flow in the hydraulic line. Also, a pressure-compensated flow-control valve is connected in the line with the other pump and, under certain conditions, directs fluid pressure to the unloading valve for setting the unloading valve in either the operative or the unloading position, all depending upon the hydraulic condition at the load-supporting member. Further, either an additional valve or a spring can be effective on the unloading valve for controlling the operative and the unloading position of the unloading valve.

Abstract: The present invention relates to a control device for a combustion engine and particularly to a combustion engine for use with hydrostatic transmissions particularly as used in a fork lift truck.

Abstract: A control mechanism for the lift cylinder of an electric lift truck. A first pump motor is energized by the closing of a first switch in response to movement of the lift valve spool toward the lift position. A second pump motor is energized when the lift valve spool is in its full lift position and a bending moment is applied to the control rod controlling the lift valve spool of sufficient magnitude to elastically deflect the control rod into closing engagement with the switch.

Abstract: An improved master cylinder in which a pair of orifices extend through the cylinder wall and means is provided on the exterior of the cylinder to permit fluid communication therebetween. The orifices are located near the end of the cylinder to permit restricted flow around the piston in the master cylinder when it is near or at the end of its stroke to cause both the master and slave piston to complete their strokes and at substantially the same time. A similar pair of orifices and an exterior communication means at the other end of the cylinder provides for re-phasing during piston movement in the opposite direction.

Abstract: A solar thermal electric energy system utilizes a solar receptor having a double paned glass window with cooling liquid circulating therethrough. This serves as a window for a solar heat receptor cavity having a number of water or steam carrying tubes therein. A portion of the tubes operate at a temperature range suitable for heating boiler water and another portion of the tubes is at a higher temperature which serves as steam superheat. The liquid flowing through a pair of window panes is triethylene glycol and in addition to cooling the window has an index of refraction which matches the window to provide the most efficient conduction of solar energy to the heat recepting tubes behind the window. The power plant itself includes heat saving jackets around the steam headers to provide for boiler feed water preheat and has both high pressure and low pressure turbines to utilize most efficiently the water being heated by the solar receptors.