Abstract: A method is provided of manufacturing magnetic heads which comprises the steps of providing a pair of core block pieces each having a gap defining surface, masking a pair of spaced areas of the gap defining surface of one core block piece, subjecting the gap defining surface of said one core block piece to etching by an ion beam or plasma sputtering, disposing the etched core block piece and the other non-etched core block piece in abutting relationship so that the respective gap defining surfaces are located opposite to each other, placing a gap forming material in a clearance formed between the gap defining surfaces of the both core block pieces as a result of the etching step applied to one of the gap defining surfaces, causing the gap forming material to melt and permeate into the clearance, and subsequently causing the gap forming material to solidify to provide a core block, which is cut to size to produce a core or cores.

Abstract: An electrical igniting unit for cigar lighters, engine ignitor plugs, and the like comprising a wound spiral of resistance ribbon which is carried in a shallow metal cup to span the mouth thereof. The inner end of the ribbon is secured to a metal stud as by crimping and/or welding it in a slotted head thereof. The outer coil convolution is secured to the rim of the cup by forming inward the rim edge into a tight curl which is laid over on the end portion of the coil convolution. A relatively large area of the coil end is thus tightly and securely pinched under continual pressure, to establish a low-resistance effective mechanical and electrical connection between the cup and the coil.

Abstract: In building a crane, the electrically actuated winches for raising and lowering the boom for moving a trolley along the boom, and for operating a hoist on the trolley are fixedly mounted in a standard transport container at a construction site remote from the assembly site for the crane. The power supply system for the winches, including a step-down transformer and switch gear, is similarly mounted in a second container remotely from the assembly site. The two containers and their contents are lifted to the top of the erected crane tower and permanently fastened there. The winch motors are connected to the switch gear by a plug-in, multi-conductor cable, and the winches are connected with the boom, the trolley, and the hoist by steel cables or other tension elements. Labor for installing the winches and the associated electrical system is reduced and damage to the relatively sensitive machinery during assembly with other crane elements is avoided.

Abstract: In a method for encapsulating electrical components, especially capacitors, plastic moulds joined to a common trough-shaped pouring ingate are used. A liquid, hardenable plastics filling compound is poured into the moulds in excess under vacuum, and the plastics compound is brought to cure. After curing, the pouring ingate together with the surplus filling compound is cut off from the encapsulated components. The mould remains as a cover around the component.

Abstract: Press fit contacts having upper mating portions are stamped, formed and oriented out of sheet material for simultaneous insertion and housing in a removable connector insulator. Receiving sleeves formed in the insulator are constructed to permit the contacts to be bottom loaded into the sleeves, seated and lightly held therein. Each contact includes an intermediate press fit collar portion which engages a mating shoulder in the insulator. The insulator serves as a holding fixture and seating tool for transmitting insertion force applied to the top of the insulator to each one of the contacts for press fitting them into contact receiving apertures in a mounting substrate. The contacts held by each insulator are all simultaneously press fitted into the substrate by continuing to apply pressure to the top of the insulator until it is mounted flush upon the substrate.

Abstract: A method for producing electrical connector strips which have soldering extensions arranged within an insulating carrier where the strip is formed apart from the insulating carrier and treated with an active deoxidation agent, tinned in the region of the soldering extensions, then placed in the insulating carrier and finally free-cut in such a fashion as to preserve solderability of the extensions.

Abstract: An apparatus for inserting a socket into a printed circuit board comprising a supporting structure, first and second resilient fingers attached to the supporting structure, and a socket holding mechanism. The resilient fingers are adapted to receive and releasably retain a socket therebetween at a socket retaining station. The socket holding mechanism is mounted on the supporting structure for movement from a first position on the side of the socket retaining station remote from the printed circuit board toward the printed circuit board along a path which passes through the socket retaining station and between the resilient fingers. As the socket holding mechanism passes through the socket retaining station, the socket is removed from the resilient fingers and coupled to such mechanism so the socket holding mechanism can move the socket to the circuit board.

Abstract: Disclosed is a device useful by an orthodontist for expanding a human palate. It comprises a stationary body secured to an anchor tooth on one side of the palate and a movable block secured to an anchor tooth on the other side of the palate. A helical spring urges the two apart to expand the palate. A keeper holds them together until they are fixed in place by the orthodontist.

Abstract: An analog module for use with a dental articulator is formed as a unitary structure having a pair of laterally spaced simulated fossae. The module is formed with reference openings in the undersides of the fossae, and it is then placed in a reconverter machine where the reference openings are enlarged to represent the three-dimensional jaw movement characteristic measured from a particular patient. Thereafter the module is attached to the upper frame of an Arkon type articulator where the enlarged openings reproduce the jaw movement pattern of the patient.The module is provided with a fixed three-dimensional reference for establishing a predetermined reference position when it is placed in the articulator, and establishing the same reference position when it is previously placed in the reconverter machine. The module also has hinge axis alignment means engagable by pointers of a transfer face bow for aligning dental casts in the articulator.

Abstract: The present dental articulator provides a means for correcting most incorrect bites after the models have been mounted and permits the model to be removed and placed on another similar articulator in the same position. An articulator frame comprises a base having opposed side frame members but supports a pivoting frame attached thereto by pivot pin and coil spring arrangement. A bottom bracket removably mounted on the base supports a U-shaped model bar for the lower model with adjustment means thereon removably supporting the model frame. An upper bracket on the pivoting frame removably supports a U-shaped upper model bar for adjustment thereon. The upper and lower models are mounted and adjusted in fixed position and then may be removed and sent without the articulator to be remounted later in a similar articulator.

Abstract: A drill guide attachment for dental drill handpieces and the like includes a first sleeve, and attachment means adjacent one end of the first sleeve for securing it to a dental drill positioned therein. A second sleeve is in telescoping, coaxial, sliding relation with the first sleeve and positioned adjacent the other end of the first sleeve, the sleeves being adapted for bidirectional, limited axial motion relative to each other. The second sleeve has an outer end defining a flat surface occupying a plane transverse to the major axis of the second sleeve, so that positioning of the flat surface against a work piece simultaneously positions the drill in the sleeves in a predetermined manner relative to the workpiece. The second sleeve can define aperture means for viewing the contact point between a drill positioned in the sleeves and a work piece during the drilling operation.

Abstract: This invention is an ellipsograph drafting apparatus operable to draw ellipses of any desired ratio of major and minor axes limited only by practical size of the device. The ellipsograph drafting apparatus includes a main support means, an elliptical control means, and an intermediate connector means connecting the elliptical control means to the main support means. The elliptical control means includes a marking instrument and actuator assembly which is operable to draw ellipses on a support surface through preselected movement of a pivot arm and slide assembly in a three dimensional manner.

Abstract: A liquid level indicator and flow measuring device comprising a portable housing adapted to be removably mounted in a man-hole and which has a liquid level sensing probe extending downwardly therefrom. The probe is periodically lowered, by the control means within the housing, until electrical contact with the liquid is achieved. The probe is then automatically raised a few inches above the liquid level for a predetermined length of time after which the probe is again lowered until the liquid level is electrically contacted. The movements of the probe are recorded on a clock device recording graph. Means is provided for switching the control apparatus to accommodate pipes having 0 to 12 inch diameters and 0 to 24 inch diameters.

Abstract: A dial bore gauge for measuring the size and surface characteristics of internal surfaces including surfaces which may include spaced portions to be gauged, said gauge including a gauging portion having spaced work engaging elements thereon, a dial portion for indicating the condition of the work engaging portions, members operatively connecting the gauging portions with the dial portion, and an actuator element operatively connected to the gauging portions and movable between different selected positions in one of which at least one of the work engaging elements is in a retracted condition and in another of which all of the work engaging elements are in their work engaging positions.

Abstract: A process for storing and preserving grain once it has been cured by promoting hydrolysis of the grain starches and proteins to thereby alter the grain composition to a more usable state and to effect and increase in the dry weight of the grain.

Abstract: Process for treating oil containing vegetable raw material by the influence of moisture and heat, whereby during the exposure of a rather thin layer of the oil containing raw materials to a moisture and heat transfer fluid, the raw materials are subjected to a loosening movement by means of a vibration having a substantial vertical component. The frequency of the vibration is 200 - 400 and the vertical amplitude 10 to 40 mm.

Abstract: A grain storage bin utilizing solar energy to heat air that is circulated through stored grain, having an outside sidewall constructed of heat absorbing material and forming a closed structure. A roof is disposed over the outside sidewalls. An inside sidewall forming a second closed structure is disposed inwardly from the outside sidewall, thereby forming a solar plenum between the outside and inside sidewalls. Air intakes are disposed within the outside sidewalls, thereby permitting ambient air to pass into the solar plenum. An air pervious floor is attached to the inside surface of the inside sidewalls and a grain chamber is formed by the inside sidewalls and the air pervious floor. An air circulating device is disposed within the grain bin for circulating ambient air through the air intakes, the solar plenum, the air pervious floor, the stored grain, and out of the grain bin.

Abstract: Air is vented from steam-charged heating pipes of a tubular rotary dryer via connector pipes and a collecting pipe which is disposed circumferentially around the dryer drum. Holding blocks provided with inwardly-biased rollers support the collecting pipe for longitudinal movement on the exterior wall of the dryer drum.

Abstract: An appartus and process for drying grain in which the grain is first heated to drive off a portion of the moisture as it passes along a conveyor, and the heated and partially dried grain is then discharged into a holding or steeping bin where the moisture in the center of the kernels migrates to near the surface and the temperature becomes substantially uniform throughout. The grain is then discharged onto a second belt where the grain is first heated to drive off a substantial part of the moisture remaining in the grain and then is cooled before it is discharged from the apparatus. Air is used to cool the grain before it is discharged and this partially heated air is utilized in both grain heating operations. The apparatus includes upper and lowersections with porous conveyor belts for moving the grain between a receiving hopper to the bin and from the bin into a discharge recepacle.

Abstract: An identification system intended primarily for use by Police Forces and Police Departments and other organizations in the field of criminal investigation, the identification system making use of first and second pluralities of photographic facial portions, each portion bearing one or more facial characteristics, said first and second pluralities respectively incorporating portions to enable full front face views and corresponding profile face views to be assembled, the portions in said first and second pluralities being in the same geometric scale and each carrying indicia so that the selection of a photographic portion from one of said pluralities automatically enables the selection of the corresponding photographic portion from the other of said pluralities, whereby both a full front face photographic assembly and a corresponding profile photographic assembly of the facial features of a recollected person can be composed by a witness who recalls said person.

Abstract: Serious learning disabilities that are encountered by students learning to read, write and spell include the mirror image reversal of letters, the writing of letters upside down and letter reversals in words. Corrections of these disabilities is achieved by providing a correct or standard version of the letter or word symbol, a matching element with the correct version of the letter or word symbol and indicia thereon which indicate proper orientation of the matching element for testing the match of the standard symbol with a series of test symbols aligned along a row, a majority of which are identical to the matching symbol on the matching element. The standard symbol and the test symbols that are used may be printed on a sheet or card and the matching symbol may be printed on a transparent overlay.

Abstract: A pin hole type star globe of a planetarium is provided with star identifying means for intermittently interrupting light projected through a pin hole of the star globe to form a star image on a viewing screen, thereby causing a perceptible, identifying blinking of said star image. The star identifying means includes an occluding arm which may be caused to swing back and forth into and out of interference with reference to the projected light; such swinging being caused by electrical, radio frequency means, controlled by step operating switching means.

Abstract: A sheet piece placed on the insole of a shoe so as to support only the arch portion of the foot. The sheet piece may preferably be used in combination with an insole sheet wherein the sheet piece has a plurality of projections which engage into a plurality of openings formed in the insole sheet. The sheet piece may include first and second pieces attached on opposite surfaces of the insole sheet, wherein the second piece may be attached to the bottom surface of the insole sheet and may be constructed from less expensive material and provided in a plurality for one combination of the insole sheet and the first sheet piece.

Abstract: A control circuit for a switching regulator comprised of silicon controlled rectifiers and inductive reactors is disclosed. The control circuit provides for fault detection and voltage regulation while using these output as control signals for a frequency variable gating mechanism to trigger the switching regulator so as to provide its maximum output capability.

Abstract: A canvas-type athletic shoe, particularly adapted for playing street hockey. The shoe is provided with a plurality of triangularly shaped gripping members, each having a principal sloping face depending outwardly from the bottom of the shoe. The principal sloping face of each triangularly shaped gripping member may be either the hypotenuse of a right-angled triangle, the longest side of an obtuse triangle, either equal side of an isosceles triangle, or, the longer of the two sides of a scalene triangle which are not adjacent to the bottom of the shoe. Each triangularly shaped gripping member is said to point in the direction of the acute angle each principal sloping face makes with the bottom of the shoe.

Abstract: A snowshoe substantially entirely formed of plastic and including a peripheral rib defining front, central and rear sections, the rear and central sections being substantially flat and the front section extending upwardly in a smooth fashion from the central section to define an upturned tip portion, the rear section including latticework forming openings to permit passage of snow, the central section including means for securing a foot harness to the snowshoe with central portions of the central section adapted to support the foot of a user and including latticework to preclude trapping of snow between the foot of the user and the uppersurface of the snowshoe, portions on both sides of the central portion being substantially continuous to preclude passage of snow and provide additional flotation to the snowshoe. An integral tail may be defined on the snowshoe and tip portion may be substantially continuous to preclude catching on branches.

Abstract: A ski-boot cleat which is adapted to be removably attached to the well known ski boot whereby the skier can stand erect in a substantially vertical position when the cleat is positioned under the ball of the foot. The cleat comprises a main cleat body having the bottom surface formed with a plurality of transverse rib members, whereby the boot can fulcrum thereon, the upper surface being formed with a recess having longitudinal flange members located on the opposite sides of the recess wherein the sole of the boot is received therein. The cleat includes a resilient strap secured thereto, the strap being arranged to be mounted over the outer peripheral edge of the sole.

Abstract: A device for digging, balling and relocating a tree for mounting on a vehicle having twin spaced booms having an attachment plate pivotally mounted thereto. The device includes a rear blade for connection with the attachment plate of the vehicle together with first and second arms rotatably mounted about the longitudinal axis thereof on the attachment plate. The arms are also pivotally mounted on the attachment plate. Each arm carries at the outer end thereof a side blade. A hydraulic ram rotates and pivots each of said arms to thereby move the blades thereof together or apart relative to the rear blade.

Abstract: A truck has a pusher frame secured to its front end and has a space between its cab and its body at the rear. A front post is secured to the pusher frame and a rear post is secured to the vehicle frame between the cab and body. Each post includes a vertically disposed rectangular tubular way having a slot along one side and a double acting hydraulic cylinder having its piston rod secured to the bottom end of the way and the lower end of its cylinder secured to the rectangular portion of a pair of spaced plates adapted to slide within the posts. The cylinder has a piston secured to the upper end of a double tubed piston rod, one tube being telescoped within the other and having an annular space therebetween, the central tube extending beyond the other at each end.

Abstract: An automatic planer comprising hinged fore and rear frames, a scoop with a cutting edge, a running gear, a planer dip angle pickup and a ground level pickup, an engagement mechanism of a prime-mover engine clutch, mainly tractor. The dip angle pickup is connected by means of one electrohydraulic distributor to a hydraulic cylinder joining the rear and fore frames and the scoop is secured on the fore frame and provided with side walls joined by a bottom plate in their rear part and a back wall, which can move in slideways parallel to the bottom plate and is connected to the fore frame by means of another hydraulic cylinder in its turn coupled by means of another electrohydraulic distributor to the ground level pickup positioned in front of the scoop cutting edge.

Abstract: The invention is directed to an extra capacity steam iron with a soleplate and heating means and separate forward main, and rear surge, steam generators with conventional means for selective delivery of water to the generators and heat regulating thermostat means. The improvement to this structure comprises a walled enclosure on the soleplate between the generators in the rear half of the iron adjacent the surge generator and asymmetrical about the longitudinal centerline of the iron. Within the enclosure there is a boss upstanding from the soleplate and smaller than the enclosure to provide some peripheral space between the boss and enclosure and a coverplate is disclosed over the soleplate to define steam distributing means from the generators. The enclosure extends through the coverplate and the boss extends above it.

Abstract: A display sign of the type comprising a back-lighted panel having a plurality of discrete light-transmitting areas and controlled opaque discs which selectively overlie the individual light-transmitting areas to produce a desired visual pattern of light transmitted through the panel. The improvement comprises discrete projections for supporting the individual discs. The arrangement of projections serves as structural reinforcement in the panel.

Abstract: A storage and viewing device is disclosed for cut film radiographs. The device is provided with a combination of fluorescent lights and a spotlight in a plurality of discrete viewing areas. A transport mechanism moves panel mounted X-rays from a storage area to the viewing area and vice versa. An intermittent drive means is utilized for indexing the display panels into and out of the storage area. Means are provided for controlling the movement of the panels as they are transported to the display area to prevent jamming.

Abstract: The present invention is a new structure for a cohesive display board. The surface of the display board is treated with flocking, powdered rayon, as is the back of the item to be displayed. Contact of the flocking, on the display item and display board, will cause the display item to adhere to the display board. The cohesive force is created by the interlocking or meshing of the contiguous fiberous rayon flocking.

Abstract: An aluminum picture frame conventionally comprises: four perimetric frame sections of U-shape in cross-section, each section having a perimetric wall, a ribbed front face flange and a ribbed rear face flange which should be narrower than the front face flange, each ribbed face flange being mitered at its opposite ends, the adjacent mitered ends of these sections being rigidly joined to form an integrated open-ended frame. At least one mat-retaining spring is used in each of two or more opposed frame sections to retain a mat extending across the inner side of the front face opening of the frame. The preferred form of each retainer comprises: a spring wire open-looped or corrugated at intervals along its length to form a narrow strip of suitable length, which is bent to a concavo-convex shape to provide it with a resilient concavo-convex undulation.

Abstract: A size indicator or identifier for a garment hanger is disclosed. The size indicator includes a disc section and sidewall section which carries the size indicia. The disc section defines flexing means to securingly receive the garment hanger.

Abstract: A gun cleaner consisting of a plastic bag having a pouch adapted to receive the gun to be cleaned with its barrel pointed downward, and having an elongated barrel-receiving portion of reduced cross-sectional size, the bag being adjustable so that the barrel-receiving portion may be of a length suitable to receive the barrel of the gun. The barrel-receiving portion is foldable to a position in which the length of the barrel-receiving portion accommodates the gun barrel yet is not so large that it uses an excessive amount of cleaning solution or solvent. The barrel-receiving portion may be unfolded into a position to form a solvent or liquid cleaner-receiving chamber below the barrel so that this liquid may flow or drain downwardly into said solvent-receiving chamber.

Abstract: A cooperating pair of trawler doors is disclosed wherein each door comprises a longitudinally arcuate body with a convex inner side and a concave outer side, at least one louver in the body providing slots for passage of water through the doors, first attaching means affixed to the forward portion of the convex inner side for attachment of the forward portion of a tow line to the towing vessel, and second attaching means affixed to the aft portion of the concave outer side of the door for attachment of the aft portion of the towline to a trawler net.

Abstract: A fastening device for stably mounting a fishing reel to a fishing rod by the fastening action of a pair of cooperating sleeves, one fixedly and the other axially slidably mounted on a main cylindrical body which is attached to the fishing rod. The shape of a hood possessed by each sleeve is so improved as to stably and snugly fasten the foot of the reel, allowing very limited horizontal displacement of the reel.

Abstract: An artificial fishing lure which simulates the appearance of live bait swimming in the water. The leading end of the lure is provided with a symmetrical scoop configuration and a transverse trough which together cause the lure to roll and pivot in the water. A spinner assembly for the lure includes a spinner blade and a harness to which the lure is attached in a flexible manner to permit it to move with a swimming type motion.

Abstract: An elongated bar equipped at one end with a twisting handle has a loop formed on its opposite end and the end of the loop is positioned at one side of the bar with a small gap existing between a corner of the loop end and the bar. The arrangement forms a wedge passage through which a fish hook being twisted for extraction by the user of the device cannot escape.

Abstract: An animal trap comprising a base, a pair of generally U-shaped jaws journaled in said base for pivotal movement toward and away from each other between fully open and fully closed positions, U-spring means associated with the jaws and normally operative from a compressed to a released condition to pivot the jaws toward each other to the fully closed position and animal actuated trigger means for releasing the spring means. At least one of the jaws has a generally cylindrical elongated jamb or spacer element mounted thereon which extends toward the other jaw and abuts it in the jaws closed position to maintain the jaws at least slightly spaced apart even in the fully closed position. In one form of the invention, the jamb element includes a generally rectangular longitudinally extending slot therein which receives and is received within a generally rectangular notch in the jaw, which notch opens toward the other jaw.

Abstract: A play device for suspending a floatable object such as a foam plastic ball or a ping pong ball in an air stream and selectively manipulating the direction and position of the air stream so as to move the ball into areas defined by movable structures. The structures are themselves movable when contacted by the air stream to thereby move the ball-receiving areas and increase the difficulty and excitement of the play of the device. The areas may comprise passageways completely through the movable structures or may be the entrances to receptacles in which the ball may be received or may be defined areas adjacent to portions of the structures. The air stream may be provided by a hand-held blower unit which preferrably includes a cradle for the ball. The cradle includes apertures or openings therein which permits the ball to be lifted by the air stream from a starting position in the cradle and suspended in the air stream a substantial distance above the cradle.

Abstract: A floatable toy, for example a boat, has two hulls and a reservoir or container for water mounted between the hulls. A discharge outlet is connected to the reservoir at or near its bottom and is directed rearwardly of the toy, so that water is discharged from the reservoir through the outlet to provide a reaction with the water on which the toy floats and drive the toy. The reservoir is spaced from the water on which the toy floats even when it is filled with water.

Abstract: A toy vehicle game, for use with a powered toy vehicle having at least one driven wheel, includes a transport vehicle which is adapted to receive and support the powered vehicle on an associated track. The transport vehicle has means therein for locating the powered vehicle on the transport vehicle in a predetermined position, and includes at least one track engageable wheel rotatably mounted therein which is located in operative engagement with the driven wheel of the powered vehicle when the powered vehicle is in said predetermined position on the transport vehicle. As a result, the driven wheel of the powered vehicle rotates the track engageable wheel of the transport vehicle in order to propel the transport vehicle.

Abstract: Hydroponic nutrient solution is fed to a growing bed by means of a pump withdrawing liquid nutrient solution from a supply reservoir located below the bed. The nutrient solution is rapidly drained from the bed when the pump is de-energized through a dump valve having no moving parts which bypasses the solution draining from the bed directly into the supply reservoir. The dump valve consists of a hollow body having at least one drain aperture. A stream of nutrient solution under pressure passes through a nozzle in the inlet of the valve body and is discharged into the outlet of the valve body. When the pump is de-energized, a major portion of the solution draining from the growing bed passes through the aperture and drains directly into the reservoir.

Abstract: The protection of plants against frost damage comprising treating the plants before the onset of freezing cold with bacterium M232A.

Abstract: A versatile yet highly simplified and exceptionally utilitarian plant growth apparatus assembly is comprised of a combination, in desired practical plurality, disposition and geometry and arrangement, of several individual and self-contained functional units and structures that are modular in nature and applicability and cooperable for engagement and association with one another so as to constitute the wanted and/or necessary resultant effective and operable assembly; the modular units being severally and characteristically in the nature of either mechanical structure members and/or environmental control systems electrical or otherwise in nature and/or light-providing components; the several said units further being peculiarly adapted for very quick and easy mounting and construction into, change and alteration within, addition to or disassembly from the structured apparatus assembly.

Abstract: Using controlled pollination a cytoplasmic male sterile alfalfa plant is crossed with a maintainer line to give cytoplasmic male sterile hybrid alfalfa seed which is recovered. Male sterile hybrid alfalfa plants derived from the said seed are then crossed, using random pollination, with male fertile alfalfa plants to give alfalfa seeds of good productivity.

Abstract: A fire resistant acoustical panel, partition and door characterized by a unique arrangement of sound blocking material and a novel drop seal mechanism including a plurality of relatively movable, mating wedges disposed in a slot along the bottom of the door.