Abstract: A hair cutting device which comprises a casing opened at its one side for suction of the hair ends and communicated at its another place with a delivery passage connectable to a collection means and a cutting edge combined with a comb and arranged movably against an opened end of the casing is disclosed.

Abstract: A base plate mountable in a dental articulator, having a groove forming a closed curve therein. The groove defines a base plate of a smaller size, such that the larger base plate, containing the groove, may be fractured along the groove and a smaller base plate may be used in lieu of the larger one.

Abstract: A hand-held, tooth enamel-stripping apparatus having a handle portion, and a guiding portion extending from the handle portion to a free end. One end of an abrasive metal band is secured to a U-shaped member connected to the free end of the guiding portion, and the other end of the band is tensionably secured to a locking mechanism, spaced from the U-shaped member, and connected to the handle portion. The band is mounted to the apparatus adjacent the guiding portion so that when the band is inserted between adjacent teeth, the guiding portion rests adjacent a tooth crown for guiding the apparatus during its reciprocal, tooth-stripping movement.

Abstract: There is disclosed a handle for a disposable appliance that is particularly useful as a dental instrument for holding a disposable swab or brush that is mounted on a bendable stem, which device includes a handle that is of a size and shape to be manipulated with the fingers and having on at least one end a holding means for the stem. The holding means includes at least one groove of a size to receive the stem snugly and a slot located between the groove and the handle with the thickness of the slot being slightly greater than the diameter of the stem. A removable sleeve that is formed with internal contours to provide a friction fit with the holding means cooperates with the holding means, when installed thereon, to form a channel including at least one groove, the channel closely embracing the stem and holding it against slipping axially.

Abstract: A portable folding table system especially adapted for support on a bed, which folds for storage and which when open provides aligning, work supporting and work ventilating facilities; a grid on the table surface supplies means for squaring the weave of cloths being worked on the table, rods on opposed edges of the table parallel with lines of the grid provide guides for a snap-on graduated straight edge slidable on the rods to align patterns placed on the cloth being worked with the weave of the cloth; folding clips with sized holes cramp the rods in the holes to constrain the rods in working position; sliding-bolts maintain the table panels in-plane and detachable legs with large-area feet provide secure, damage-free support on a bed or the like when the table is in use; when folded the table provides capacious, internal storage for the rods, legs, straight edge and other accessories and materials used in sewing; a system of surface perforations coincident with intersections of the grid permits ready drying

Abstract: The present invention relates to a method and apparatus for detecting the geometrical features of mechanical workpieces, particularly for measuring eccentricity and out-of-roundness of cylindrical and revolution surfaces in which at least two size checks on relevant sections of the cylindrical surface and at least two size checks on the same section of the revolution surface are carried out and the data resulting from the checks are processed to supply an indication of the eccentricity of the two surfaces and of the roundness of the section of the revolution surface. The apparatus includes a plug carrying feelers which is automatically positioned with respect to a workpiece and then revolved, so that feelers carry out measurements. The apparatus is used for checking valve guide holes and valve seats of engines and similar workpieces.

Abstract: A bore gage that is used for determining the diameter of a bore or hole is provided with a measuring head comprising a cylindrical housing. Within the housing is an electrical measuring member or transducer that can take the form of a linear voltage differential transformer. Contact points or probes are connected to each of the moving elements and pass through bearing members on the surface of the housing which retain the transducer therein.

Abstract: A reticle illuminator for a reflex sight having a light gathering rod mounted in a housing which in turn is mounted on the sight barrel or housing. The rod is exposed to ambient light and emits fluorescent light to illuminate the reticle. A magnifying lens is focussed on the rod to intensify the brightness of the ambient light which strikes the rod. The rod housing has a number of component parts for easy assembly and disassembly.

Abstract: A solid state magnetic sensor system for indicating the direction of an applied magnetic field and more specifically as a compass system for use with automobiles or the like. The system consists of a dashboard mounted readout unit which receives signals provided thereto from a remotely located solid state magnetic bearing sensor, the latter being responsive to the earth's magnetic field. The solid state magnetic bearing sensor described herein, includes a pair of Hall effect semiconductors and ancillary electronic circuits. Two ancillary circuit types are described. One circuit is designed to output digital codes indicative of magnetic heading; the other circuit is designed to output two currents which are indicative of sine and cosine components of magnetic heading. The circuit designed to output digital codes includes sinusoidal waveform generators, a binary counter, a differential comparator amplifier and digital latch and decoding circuits.

Abstract: A system for drying particulate materials such as amorphous polyethylene teraphthalate or other materials that tend to fuse or agglomerate while being heated includes the steps of directing into the lower portion of a dispensing hopper filled with particles of the material a stream of hot dry air at a temperature above the temperature range in which the particles are unstable and tend to cling to one another and allowing the stream of air to pass upwardly through the particles in the hopper and to transfer its heat to the particles and form a temperature gradient in the body of particles in the hopper which is higher than the critical temperature range of the material at the lower portion of the hopper and which causes the particles to pass through the critical temperature range as the particles are dispensed downwardly from the hopper. The particles are agitated in the critical temperature range to prevent the particles from clinging to one another.

Abstract: A thrust grate, particularly a cooling or fire grate having an essentially horizontal sequence of two sets of grate plates alternatingly fixed and reciprocating forward and backward in linear alignment and vertically spaced from each other. Each set of plates has a rear portion extending in the direction of movement of the movable grate plates, an at least partially upward slanting front portion, and an inclined front.The front end of each plate overlaps the rear end of each following plate. The front ends of the fixed and reciprocating plates, each, are provided with a lip or nose, respectively, to move the material deposited on the sloped portions thereof.The angle of the sloped portion of the fixed grate plates is different from that of the movable grate plates.The rear portion of the plates with the smaller angle is positioned on a higher level than the rear portion of the plates with the larger angle slope.

Abstract: A G-seat for simulating accelerations is provided with apparatus for generating skin tension/contraction cues. These cues are generated by displacing at least a portion of a body-supporting, seat cushion surface in a direction generally parallel to said surface. Disclosed are various exemplary mechanisms for producing this displacement including apparatus for imparting coplanar movement to either a whole seat cushion, or a section thereof, relative to the remainder of the seat; seat cushion lip extenders; and driveable seat upholstery. The operation of the skin tension cue generator is preferably coordinated with the operation of the other active elements of an Advanced G Seat to produce compatible skeletal attitude, flesh pressure gradient, area of contact and skin tension cues.

Abstract: A system for vibrating a seat within the cockpit of a flight trainer to simulate aircraft buffeting. The seat is mounted at its rear on a pair of linear bearings which permit z axis movement of the seat relative to the trainer cockpit. A hydraulic actuator, acting through a bell crank and link, vibrates the seat up and down under computer control. The computer determines the required seat vibration frequency and amplitude as a function of simulated aircraft angle of attack and maneuvering load factor. Analog signals representing the computed vibration frequency and amplitude are fed to a voltage controlled ramp generator which provides a seat driving signal to the hydraulic actuator through a closed loop servo system.

Abstract: A molecular model has a center made up from two relatively pivotal parts which are angularly movable between predetermined angular positions. The parts are relatively unstable when not in such angular positions. Atomic valency bonds in the form of elongate flexible members extend from the pivotal parts and have at their free ends couplings which engage another like coupling of another flexible member or another center part. The couplings are identical and each comprises both a projection and a socket or in one embodiment a magnet presenting at an end surface, both a North and a South pole.

Abstract: A method of and means for demonstrating organic evolution, particularly as it involves the mechanism of natural selection. Background panels of multicolor and intricate design or pattern are used to provide simulated natural environments, and thin chips of different colors and shades -- and, in some instances, of different sizes and shapes -- are used to provide simulated animals or plants to be placed on the background panels. A population of a predetermined number of chips of a predetermined mixture of colors -- say, for instance, an equal number of from ten to twenty different colors -- is selected. The chips constituting the selected population are then spread in a single layer more or less uniformly on the surface of the background panel, and preferably in spaced relation, so that each chip is in plain view and is more or less detectible -- depending upon the color contrast existing between each chip, respectively, and the associated area of the background panel.

Abstract: A system is described which comprises a set of complementary charts for teaching and testing word pronunciation and spelling. The set includes a first chart whereupon symbols representing vowel and consonant sounds, are disposed along respective orthogonal edges of a carrier. Positioned at the juncture of imaginary columns and rows emanating from each sound symbol are entries which are sounded by the combination of the corresponding consonant and vowel sounds.A second chart is provided for test purposes whereupon symbols representing the same vowel and consonant sounds as the first chart are disposed along the same orthogonal edges. Having worked with and studied the first chart, the student is instructed to write in at the juncture of the imaginary columns and rows, or on a separate sheet of paper words which are sounded by the combination of the corresponding consonant and vowel sounds.

Abstract: A sandal made from a single flat sheet of relatively soft and resilient material characterized in that two separate portions of the sheet are partially cut away so that their movable ends may be bent upwardly and releasably interengaged, the remaining flat portion of the sheet then providing the sole member of a sandal while the upwardly bent portions provide strap means for retaining the sandal upon the foot of a wearer.

Abstract: The present invention relates to certain novel and valuable improvements in sporting shoes used for running or jogging.

Abstract: Ski boot with a semi-rigid shell and flex-adjusting means. A vertical split portion in the shell is provided with apertures on each side of the split spaced along its length. A clip including two spaced parallel legs is inserted from the inside of the boot into a selected pair of apertures to limit the extent of separation of the split in response to pressure on the boot, thus controlling the flex of the boot.

Abstract: The specification describes a sports shoe particularly a ski boot which holds the foot free of pain in a fixed manner. The shoe has a good heel fit owing to the use of an instep strap which fixes the foot laterally and the lower leg partly at its front. At the closing border of the upper the shoe is snow-tight and supports the lower leg owing to the provision of elastic parts in the region over the insetp of the shoe and over the heel. These parts have an elasticity which decreases towards the boot sole.

Abstract: This disclosure is concerned with the hydraulic lifting or conveying of fluids and any bodies carried therewith, such as solid minerals in ocean mining and the like, from depths far greater than the maximum suction heights of pumps and the like, by a partially gas-filled submerged chamber suspended from a stable surface platform and connected to the open environment by means of pipes connected to a buoy, equipped with pumps, and connected to pipes of smaller cross-section extending to the required depth, with the fluid level in the submerged chamber so deep under the ocean surface that the pressure difference between the inside of the chamber and the surrounding water is greater than the pressure drop caused by the transport of fluid and solid material through the pipe from its lower end to the chamber, and with the materials subsequently transported in nearly neutrally buoyant containers, guided by a paravane.

Abstract: An excavating and loading system includes an excavating and wheel assembly at the front thereof and a plurality of conveyors for conveying the material from the excavating wheel assembly upward and rearwardly. The excavating wheel assembly includes a pair of excavating wheels with a total width wider than the overall width of the following portions of the system. A supporting and housing apparatus extends between the excavating wheels and rotatably supports the same from the front of the vehicle. A power plant is provided and a drive shaft extends down along the supporting and housing means between the two excavating wheels. Gearing is provided in the interior of the wheels and is connected to the drive shaft for powering the excavating wheels. Apparatus is provided for raising and lowering excavation height of the excavation wheel assembly to thereby vary the grade of the excavation.

Abstract: A map is segmented into columns and rows, and pairs of segments are lamind back to back in a particular manner: the segments of each column serially, and the columns serially. A marginal flap is provided at the top of each segment, wider than the segment and with a slot in it as well as the segment. A ring passes through the slots to hold the segments together, and to permit the viewing of two segments which are adjacent in the map.

Abstract: A portable display apparatus is herein disclosed. The portable display apparatus is composed of a plurality of rectangular skeletal frames. Each rectangular skeletal frame of said plurality includes a horizontal hinge, adapted to enable said frame to fold vertically. Each rectangular skeletal frame of said plurality is identical to all other rectangular skeletal frames of said plurality. Each of said frames includes a plurality of opposite vertical members. Each of said vertical members is identical to all other vertical members. Each of said vertical members has a connector portion, and a track portion. Each of said rectangular skeletal frames is adapted to be bolted to other rectangular skeletal frames in either a fixed or pivotal relationship at the connector portions of the vertical members. Each of the rectangular skeletal frames is also adapted to be hingedly connected to the other rectangular skeletal frames. The track portions are adapted to receive a display panel within track portions.

Abstract: A frame for needlepoint and the like comprises a rigid rectangular planar base member and a continuous rectangular sidewall extending from one surface thereof to provide a mounting recess, the sidewall being spaced inwardly from the peripheral edges of the base member. A rectangular mounting member seats in the recess with only a small clearance between its edges and the sidewall and provides a mounting for flexible materials having greater length and width dimensions, the material abutting the outer surface of the mounting member and being folded about the edges thereof into contact with its other surface. The combined dimensions of the mounting member and mounted material provide a friction fit within the recess. The frame has a mounting member on the other surface of the base member for mounting it to a wall, and may have a transparent sheet member seated within the recess to protect mounted material.

Abstract: A housing of U-shaped cross section fits over the trigger guard of a gun to cover the trigger guard and prevent access to the trigger. A latch member is disposed in the housing and is biased by an elastic member, for example, a spring, to engage the trigger guard. An external member is accessible from the outside of the housing for manual pressing to overcome the spring and thereby depress the latch for removing the housing from the trigger guard. By selecting the strength of the spring the gun can be rendered safe against children who have not enough strength to overcome the spring. Adults, however, can quickly remove the housing by manual pressure and make the gun instantly available for use.

Abstract: This disclosure pertains to a circular plate having a plurality of cam arms depending downward therefrom. Each cam arm is adapted to grasp a cartridge and to align the cartridges so grasped over the openings in the cylinder of revolver. A rapidly applied force on the uppermost surface of the cylindrical plate causes the cartridges to engage the openings in the cylinder and to be released from the cam arms as the cam arms are forced in a downward and outward direction by a surface of the cam arms engaging the uppermost face of the cylinder.

Abstract: A fish line control apparatus in one form includes an upright rod having an outwardly extending and downwardly swinging arm of soft iron magnetic material and having the line releasably attached to the outer end thereof, the rod having a second arm restrained against downward swinging and having a magnet thereon for retaining the first arm against downward swinging, the magnet being adjustable at various positions toward and away from the pivot of the arm to change the leverage tendering to release the first arm from the magnet. In a second form the mounting for the tilting arm forms a handle which may be hand held, and a pair of support legs for holding the tiltable arm up off the ice, and there also being a thumb operated portion of the tiltable arm so as to retain the arm against tilting by the use of a person's thumb to permit jigging of the lure or bait.

Abstract: A line guide for a fishing rod includes a resilient wire mounting frame for attachment to a rod in the conventional manner. The line guiding portion is an annular ring having a grooved periphery which snaps into the wire mounting frame. The configuration of the frame and the groove are such that the ring is held against rotation in any one of several rotatably adjustable positions and these may be changed without removing a line threaded through the guide.

Abstract: A container is provided for receiving a quantity of crickets or other insects, and a number of separate insect-receiving chambers are attached to the container. An entrance gate between the container and the plural chambers permits access to only one chamber at a time, so that an insect can enter each of the chambers in turn from the container by manipulation of the entrance gate. An exit gate allows an insect to be removed from only one of the chambers at a time, in turn, and the entrance gate and exit gate are interconnected in offset relation so that the entrance gate and the exit gate cannot be concurrently aligned with the same chamber.

Abstract: A bait bucket is disclosed having a receptacle for holding live bait and having a combination lid and bait scoop. The lid includes an end portion which projects downwardly into the receptacle when the lid is covering the receptacle and which serves as a bait scoop when the lid is removed from and inserted into the receptacle.

Abstract: A cartridge for separate attachment and storage of a plurality of fishing flies with leaders attached to them, and for winding the leaders separately upon the cartridge, the cartridge including an open area centrally located within the cartridge for the separate attachment and storage of the flies, and a plurality of side-by-side tracks for winding leaders attached to the flies upon the cartridge; means whereby the leaders attached to each of the flies may be brought into position to be wound separately on the side-by-side tracks which form the periphery of the cartridge, each of the leaders being wound separately upon a separate one of the tracks to prevent entanglement of the leaders; means for separately securing the ends of the leaders upon the cartridge after the leaders have been wound thereon; and a case for the cartridge.

Abstract: A bird trap having a pair of open mesh wire screen cages spaced apart to provide a passage between the cages. An overhead tunnel extending across the tops of the two cages bridges the space between them. Openings in the tops of the two cages communicate with the tunnel. Entrance into the first cage is through an opening in the side of the cage from the space forming the passage between the cages. A trap door in the opening from the tunnel to the second cage traps the birds in the second cage.

Abstract: An animal trap, particularly a mouse trap or the like, in combination with a package therefor wherein the trap is normally urged into a collapsible container forming part of the package, such as a paper bag, by a resilient means in the form of a rubber band or the like, with a limited stop means being provided to temporarily maintain the trap outside the container until an animal triggers the trap at which time the impact causes the trap to jump the stop and be withdrawn into the container. The trap and the trapped animal are thus encased by the package and can be disposed of without contact by the user.

Abstract: A pair of rectangular frame members have intermeshed elongated members joining the long sides of the frames, the frames are pivotally mounted to a base member so that in the set position of the trap the frames and base together form a hollow triangular animal case, a trigger member releasably secures the frames in the set position, and spring means bias the frames to an overlapping folded position on the base member.

Abstract: An apparatus having a plurality of movably attached panels which define an enclosed cavity therein for catching and restraining crustaceans. One of the panels has an aperture therethrough for allowing the entry of the crustaceans into the cavity. The cavity also contains a device for storing bait and a device for restraining the crustaceans within the cavity after they have eaten the bait and buoyantly floated to the upper portion of the cavity. The plurality of panels and the restraining device are attached by a plurality of hinges for allowing the panels and the restraining device to fold into the cavity, thereby collapsing the trap and allowing for more compact storage.

Abstract: A trap for crawling insects, such as cockroaches, comprises a container with a detachable lid having an opening large enough to admit an insect, this opening giving access to a supply of bait on the container bottom. A downward extension of the lid adjacent its opening, such as a collar surrounding that opening, terminates high enough above the bottom to allow the insect to drop down onto the bait but not to return to the opening by the same path. The inner peripheral wall of the container is coated with a slippery film, preventing the insect from climbing that wall. The bait may be contained in a cup-shaped receptacle on the container bottom.

Abstract: A play kit for the amusement and entertainment of a child in simulating outdoor activity while playing with a doll or other toy figurine. The kit includes a carrying case in the form of a free-standing gazebo having a hexagonal base. At each corner of the base an ornamental post upstands and is secured at its upper end to a hexagonal roof member for supporting the member above the base. Between one or more pairs of adjacent posts, low fence sections may be mounted as appearance improvement features and as functional members, e.g., providing support to the structure. A fold-down side panel is provided for each side of the hexagonal case for opening and closing the case. Each panel is secured to the base at a lower base edge thereof and has a fold line adjacent the base edge. When folded down, the panels provide horizontal platforms having upwardly facing platform surfaces as additional floor play area extending peripherally about the gazebo floor.

Abstract: A comprehensive play set is provided for use by children in playing animal hospital games. The set includes a case formed of a pair of hingedly connected mating casing portions which can be opened by the child for access to objects or items mounted or stored therein. A hanger device for receiving various toy medical instruments and a toy medicine cabinet for containing such instruments are secured to casing walls inside the casing. A bunk bed is removably hanging having a lip received by an upturned or hook-like flange secured to the inner surface of a wall of one casing half. An assortment of other toy medical items is contained in the case including an operating or examination table, as well as a plurality of figurines to be used by the child as patients.

Abstract: Toy building blocks are formed with a single row of connecting socket and plug elements. At least one of the exterior surfaces of the block is convexedly bowed and provided with a simulated wood grained structure.

Abstract: An inflatable balloon mounted on a hub having pinwheel vanes attached thereto. The device is suspended by a string and may be attached to a moving vehicle or held by hand for free rotation of the pinwheel and the balloon.

Abstract: An improved rotating toy, particularly a flying toy, with a centrifugal force responsive release mechanism comprising locking means for retaining an object, such as a parachute, within a receptacle in a first locked position, and centrifugal force responsive means for releasing the object from the first locked position in response to a first level of centrifugal force and maintaining the object in a second locked position until the level of centrifugal force decreases to a second level of centrifugal force.

Abstract: A doll with a rotatable head having oppositely positioned visible and hidden faces. One arm of doll may be rotated to load a torsion spring biasing the hidden face to an exposed position. The hidden face is held back by a detent. A pushbutton in the back of the doll may be pushed to release the detent so that the hidden face is suddenly moved to an exposed position by the torsion spring.

Abstract: A doll convertible in appearance characteristics by utilizing body extremities which are provided with two separate appearance characteristics on the front and rear surfaces thereof with at least certain of the extremities being movable to expose to view a selected appearance characteristic. Each of the hands of the doll is in the form of a double hand pivotal about a transverse axis oriented generally at the wrist area to orient a selected hand in exposed condition at the end of the arm. Each leg of the doll may be provided with a pair of lower leg portions and corresponding feet pivotal about a transverse axis generally corresponding with the knee area to enable either of the lower leg portions and feet to be exposed. Alternatively, the leg may be swivelly supported for rotation about a longitudinal axis for reversing the position of the entire leg.

Abstract: A combination deer-predator call has a casing divided into upper and lower half sections held together by end caps. A pair of hinged flaps at opposite sides of the upper section form movable mouthpiece portions which define with adjacent lower casing portions mouthpiece openings which lead into an interior air space of the casing. Air blown through either opening passes across one of two elastic bands each stretched between an end portion of the casing and a corresponding slide positioner to produce an animal-like sound. The pitch of the sound produced by each band is varied by moving the associated slide positioner along a positioning slot in the casing to different retention slots. Each flap, when pressed inwardly, clamps its associated band in one of several variable stretched positions as determined by its slide positioner to produce a clear sound of the selected pitch. When released, the flaps enable the tension in the operative portions of the bands to be changed by the slide positioner.

Abstract: This disclosure pertains to a circular hoop having an outermost annular opening containing a pair of inwardly turned edges for snap-in engagement with a spherical shape that is fastened to one end of a hand held hoop propelling rod. An innermost notch, having a semi-circular cross-section having a mouth portion thereof directed towards the central axis of the hoop, is adapted to receive the spherical shape in frictional engagement therein.

Abstract: A push toy with a carriage having a front bumper. A movable magnet is mounted to the bumper for engagement and disengagement with a magnetically cooperating member on a toy vehicle. A control is connected to the magnet for retracting the magnet into the bumper for disengaging the push toy and toy vehicle.

Abstract: The apparatus comprises a combination of a novel system for selectively metering and mixing horticultural spray materials immediately prior to application and a novel recirculating sprayer system for application of the mixed materials to horticultural plants.

Abstract: A sealing strip comprises a channel-shaped, metal reinforced resilient gripping portion, for embracing a flange or the like to be protected or sealed, and a longitudinally extending sealing portion running along the outside of the gripping portion. The sealing portion is attached to the gripping portion by means of a longitudinally extending support which is integral with the sealing portion and extends into the channel of the gripping portion. At its distal edge, the support has a head which locks onto a rib running along one internal wall of the channel near the channel base.

Abstract: A barn door which includes a pair of vertical side frame members and horizontal top and bottom frame members joined at their respective end portions to define a four-sided opening between the frame members. A girt is supported by and extends between the side frame members. Siding is applied over one side of the girt to cover the opening between the frame members.