Abstract: A turbine wheel in the cavity of a turbine housing is driven by liquid, ordinarily water, introduced into the housing through a conduit which can draw the liquid from a reservoir. The turbine wheel is rotatable on a shaft which is attached to the housing and extends downward through the housing to a position below the housing where a brush is rotatable on the shaft. The brush is driven by the turbine through an arrangement of gears. Openings through the turbine housing are positioned to permit the water passing through the housing to flow downward in a 360.degree. circle around the exterior of the brush. The turbine functions as an air pump drawing air into the housing which aids in forcing the water out the exit openings so that less water volume and pressure is required to force the water out in the 360.degree. circle than would otherwise be necessary.

Abstract: A helmet useful for crew members of an aircraft from which they may be ejected at high speeds comprises a shell over which there is a visor housing containing a visor which can be pulled down over the face of the searer. An anti-lift device in the form of a flange protrudes from the visor housing and extends from a position near a forward side edge of the visor housing and passes around and across the top crown area to a position near the opposite forward side edge of the visor housing. The flange rises from a lowest elevation near the forward side edges to a highest elevation at the top crown area. The regions adjacent the forward side edges constitute wings at a negative angle of attack against wind blase and the region in the vicinity of the top crown area constitutes a spoiler producing turbulence to spoil upward lift.

Abstract: There is disclosed a helmet useful for crew members of an aircraft from which they may be ejected at high speeds. The helmet comprises a shell which fits over the head in a conventional manner and is provided with a strap which passes beneath the chin to retain the helmet on the head. A visor housing attached to, and spaced from, the shell is positioned to cover the forward crown part of the head and has portions which extend downwardly along the sides of the face of the wearer, which merge into the planes of flat areas at the ears. By this structure the usual bulbous shape at the ears commonly found in helmets is avoided and the side-to-side dimension is reduced.There are formed at the upper part of the visor housing a number of discontinuous louvers forming ridges through forward facing walls of which there are apertures. During an ejection, air scooped into the region between the visor housing and the shell exits through these louver openings.

Abstract: The inlet opening of a chamber is connected to the exhaust manifold of an internal combustion engine so that the combustion products pass through the chamber to an exit opening. The chamber contains a pair of baskets which are open at their upstream ends and closed at their downstream ends. The sides of the baskets are made up of thin copper wire strands placed side by side. The exhaust from the engine is brought into the first basket and the pulses of pressure from the engine exhaust bows the wires outward in a pulsating manner to alternately open and close the spaces between the wires allowing the gases to pass through the spaces. Atmospheric air is introduced into the first basket to mix with the combustion products. The gases emanating from the first basket are introduced into the open end of the second basket and pass through the walls of the second basket in the same manner as the first basket, and then on to the exhaust opening.

Abstract: A tracer mechanism having a stylus to scan the surface of a pattern or a template and to cause a congruent relative movement of a cutter and a workpiece, whereby to reproduce the contour of the pattern or template in the workpiece. The stylus is provided with an axial force element which can adjustably vary the endwise thrust of the stylus, thereby to vary the reaction force of the stylus against the workpiece. As a consequence, the stylus can be caused more accurately to track the pattern or template along a tracing plane, especially on a pattern which has a steep slope that tilts laterally relative to the tracing plane. Means is also disclosed to utilize the axial force element in a machine tool table control wherein a "box-cycle" movement is made in which the cutting tool is withdrawn from the workpiece, is stepped to a new tracing plane, and is returned in a non-cutting motion to the starting point of a subsequent cutting movement parallel to the first one.

Abstract: A display system for displaying samples, for example, floor covering samples such as carpets and rugs. A perforated support board supports samples which are removably attached thereto by separable fasteners. Stand means may be provided to hold the support board. Samples may be shingled or displayed side-by-side, and the apertures in the support board are arranged so as to permit a variety of display patterns.

Abstract: A rotatable tool for cutting and stripping insulation from coaxial cable to expose the conductors of the cable for attachment to a connector, comprises a housing containing spaced grooves extending transversely across the axis of rotation of the tool, each of the grooves containing a pair of opposed cutter blades. A central bore is provided coaxial with the axis of rotation through which a length of cable to be cut and stripped is inserted. Springs are provided for urging the cutting edges of the blades apart so that the cable can be passed between them without being cut. A race at the exterior of the housing is slidable back and forth in the axial direction and normally held in a neutral position by the spring action.

Abstract: A protective cover for an electric connector containing electric contacts within an open end of the connector comprises a peripheral clamping strip to be clamped over an elastomeric band around the peripheral wall adjacent to the open end of the connector. A base member attached to the clamping strip protrudes toward the open end where there is pivoted a protective lid which can cover the open end. A spring loads the lid so that it is urged toward the position where it closes the open end and a finger portion may be used to pivot the lid against the force of the spring to open the lid. The clamping strip has ends which overlap so that the strip is substantially in the form of a ring. The two ends of the strip are provided with louvered notches which can be drawn toward each other by a suitable tool to contact the diameter of the circle over the elastomeric band.

Abstract: A coupling device comprises a retainer including a spring-loaded joint bar with a push rod perpendicular thereto, and an insertion including a solid body having a recess and a guide slope.The retainer is attached to a stroboscope holder, while the insertion is attached to a bracket.The insertion is easily and quickly connected with the retainer by inserting the solid body into the retainer.By a force which the joint bar receives from the solid body, the joint bar is caused to slide against a force of a spring along a guide slope until the joint bar falls in a recess, and the joint bar is engaged with the recess.On the other hand, the insertion is removed easily and quickly from the retainer merely by pushing the push rod until the engagement of the joint bar with the recess is released, and then pulling out the insertion from the retainer.

Abstract: A knee joint coupling comprises a pair of similar U-shaped links each having a base and two parallel legs extending perpendicularly from the base. One of the legs of each link has a hole through it and the other leg has a pin extending from it in the direction either toward or away from the hole. When the pin of each link is fitted into the hole of the other link, there is assembled a knee-joint type of coupling due to the pivoting action of the pins in the holes. The links may be held assembled by means such as screw members inserted through the bases and into the region between the legs of the two links. Alternatively one of the links may have its base fixed to one member while the other link is fixed to the other member in which case the two members are pivotable as a door hinge or the like relative to each other.

Abstract: A furnace containing a burner, supplied by fuel to be ignited at the burner, in the presence of air, is provided with a viewing duct for viewing the flame and means for detecting the radiation intensity at a plurality of different wavelengths of the radiation spectrum. The output from the detector is amplified and integrated and a signal representing the ratio of intensities at the selected wavelengths is applied to an indicator to indicate fuel-air ratio and also is applied to control means for the fuel flow or the air flow, or both, to control the fuel-air ratio at the burner and to maintain it substantially constant at a desired value. This can be done at more than one burner, providing balanced furnace operation. With this balanced furnace, there is improved firing efficiency, resulting in fuel saving and lowered pollution emissions. A computer type master controller can be used to correlate the fuel-air ratios for the individual burners.

Abstract: A field-effect liquid-crystal type display device employing a twisted alignment method is provided with a pair of electrode glass plates spaced apart from each other and a field-effect type liquid crystal with a positive dielectric anisotropy loaded in the space defined by the plates, the plates being disposed in such a manner that an angle formed by the alignment treatment directions of the plates is changed a proper angle from 90.degree., so that the twisting direction of molecules in the liquid crystal is unified and the liquid crystal type display device is improved to show homogeneity, and thus to reduce the number of dirty domains or spots in display.

Abstract: Devices are disclosed for use in the sport of Indian wrestling. In such a contest each of two contestants is to stand at a prescribed place such as on areas marked on a board. Each contestant holding one side of the device attempts by moving the device to unbalance the other contestant to cause him to shift his footing and thereby lose the contest. Each of the several embodiments of the wrestling device disclosed comprises a block having means for grasping it.In some embodiments the movement of the device by one contestant is fully resistible in all degrees of freedom of movement by the other, while in other embodiments one part can swivel relative to another, reducing in number the degrees of freedom of movement which can be resisted, and thereby changing the sport remarkably.

Abstract: An electro-optic device comprises a plurality of first electrodes provided on a top substrate and a second electrode provided on a bottom substrate, the first electrodes confronting the second electrode through electro-optical matter which will show electro-optical phenomena by the application of electric field, the first and second electrodes being connected through external impedance elements such as resistors or capacitors to a variable voltage source. In this electro-optic device, the electric field applied between the first and second electrodes are partially changed by various means, for instance, by making the areas of the first electrodes different, or by varying the values of the external impedance elements such as resistors or capacitors, as a result of which the electro-optical matter shows various electro-optical phenomena.

Abstract: A restraining device for use on a small child or person for holding him to a lap seat belt of a seat such as an automobile or airplane seat, comprises a vest provided with an adjustable vest belt attached around the bottom of the vest and buckling in front. A pair of adjustable straps attached at the vest belt at the front pass upward over the shoulders of the wearer and down the back, where they cross each other to the region of the vest belt at the back, where they are fastened. Loops are formed at the lower rear ends of the straps through which an ordinary lap seat belt attached at the seat, may be passed to hold the person to the seat.

Abstract: A hydraulic motor maintains its speed substantially constant in spite of changes of hydraulic fluid pressure and flow. The motor comprises a rotor to which hydraulic fluid is delivered through a nozzle arrangement from an inlet port and exhausted from the rotor to an exit port. A by-pass duct interconnects the passageway for the incoming fluid with the passageway for the outgoing fluid, to by-pass the rotor. A spring-loaded piston is situated in relation to the entrance to the by-pass duct so that when the incoming fluid pressure is relatively high the piston is retracted to expose the by-pass duct to permit some of the hydraulic fluid to by-pass the rotor, and when the fluid pressure and flow rate decrease, the spring moves the piston to close up the entrance to the by-pass duct to reduce or even stop the flow through the by-pass. A manual diverter valve is situated to divert incoming fluid away from the rotor so that all the fluid is diverted directly out of the motor housing.

Abstract: A cutting head adapted to be manually operated is positioned in relation to a worn bearing so that when the cutting head is rotated with pressure applied in the axial direction against the bearing. The head advances axially along the bearing while rotating and shaves or machines away the worn bearing surface so that a new sleeve may be fitted over the machined surface to provide a new bearing surface of the same diameter and position as the original bearing surface prior to its wearing. In one form the cutting tool is mounted on a spindle inserted into the hollow of the bearing for machining an exterior bearing surface. In another embodiment, the cutting head is on a shaft inserted through the bearing for centering the head. In still another embodiment the cutting head is arranged to advance within a hollow bearing to machine an inside bearing surface. In all embodiments provision is made for stopping the advancement of the cutting head when the proper axial length of bearing surface has been machined.

Abstract: A security device for protecting equipment such as typewriters, calculators and the like, comprises a base member having a hole through which the shank of a bolt passes through a mounting body and into the frame or housing of the equipment to be protected, the head of the bolt being held at a seat within the base member. A protective envelope has an end member positioned to be juxtaposed to, and cover, a portion of the base member around the seat to prevent access to the bolt head. The end member has a threaded hole through it communicating with the bolt head, and a lock body having a barrel with a threaded protruding neck which engages the threaded hole, fits within a hollow shank of the protective member. The lock body contains a number of transversely slidable locking blades which resiliently protrude from the barrel to engage spline stops of the shank when in the normal locked position.

Abstract: A spray nozzle adapted for attachment to a hose for spraying water on a garden or lawn has a neck which merges into an enlarged delivery region, at the front of which there is a spray plate containing holes through which the fluid sprays. A pin for insertion into the ground is formed in the shape of an open eye at one end, the eye being attached by forcing it between juxtaposed bosses protruding toward each other from lugs at the under side of the nozzle device. The part of the device comprising the neck and delivery region is made in one piece of molded material and the spray member containing the spray plate is made separately of a similar molded material, these two parts then being attached together. To permit the making of the spray member portion in a mold, the mold is constructed so that it parts at a plane passing through the parts of the protruding bosses which are closest to each other, so that the mold parts can be separated from the cast article.