Abstract: A process for producing long-lasting corrosion resistant carbon steel razor blades and the products made thereby. The process comprises first coating the cutting edges of the blades with chromium; and then immersing the blades in an electroless coating bath to provide a coating of a nickel-phosphorous, nickel- copper- phosphorous, cobalt-phosphorous or cobalt-nickel-phosphorous coating material on at least the bodies of the blades, the chromium coating preventing beading up of the coating material on the cutting edges of the blades to an extent that would require resharpening of the cutting edges. The blades may thereafter be overcoated with a carboxy-substituted silicone oil composition preferably comprising therein a long chain aliphatic acid, alcohol, amide and mixtures thereof.

Abstract: This disclosure is directed to a method of making a dental die and an improved dental dowel pin for facilitating the making of such dental die. The dowel pin comprises a double pronged pin interconnected by a bridge and having an extended portion for locating the pin in a mold cavity prior to the pouring of the die forming material into the mold cavity. The method for making a dental die comprises the step of forming an impression of a patient's teeth to define a mold cavity. The double pronged dowel pin is then inserted into the material of the mold so that the double prongs project upwardly from the mold. The die forming material is poured into the mold cavity in two parts. The first part covering the bridge of the dowel pin to define the dental die, and the second part of the molding material poured on top of the first part to form the mold base when the dental die portion has set, with a lubricant barrier interposed between the two parts.

Abstract: A method and an orthodontic positioner for preventing or correcting overbite and/or overjet at a mixed dentition stage wherein a patient has permanent incisors and lost, unreplaced canine and deciduous molar teeth. A positioner essentially of a size for a person having incisors the same size as that of the patient but with a full set of permanent teeth (posteriorly to the permanent canine) is trimmed back posteriorly and along the gingival margins to fit in the patient's mouth without abrading the labial-buccal gum surfaces. This will concurrently provide depression of the incisors and guidance of eruption of the permanent canine and bicuspid teeth.

Abstract: A rotatably adjustable orthodontic bracket assembly for correcting improperly positioned or angled teeth. A tooth band or bonding base is provided with a bearing in which a pivot element is mounted having at one end a flexible friction flange engaging the posterior side of the band or base and having an arch wire bracket at the other end engaging the anterior side of the band or base so that the bracket may be readily adjusted to a desired angular setting and retained in such setting during handling. Thereafter, the bracket is welded to the band or base and subsequently the band or base is cemented to the tooth. A gage is provided to readily adjust the bracket to any predetermined angular setting or to indicate the angle to which the bracket has been previously set.

Abstract: A mechanism on a dental articulator for receiving and supporting the pointers of a transfer face bow in aligned relationship therewith and without disturbing the face width adjustment of the transfer face bow.

Abstract: An apparatus for measuring taper on mechanical workpieces having a tapered surface, including first and second reference bodies for cooperating with the tapered surface along relevant circumferences of different diameters, a measuring transducer for providing indications responsive to the position of the first and second reference bodies, a support for the first and second reference bodies and first and second connectors connecting the first and second reference bodies, respectively, to the support. The first and second reference bodies define a first revolutionary surface and a second revolutionary surface, the revolutionary surfaces being coaxial between each other and adapted to be arranged tangent to the tapered surface and passing, respectively, through a relevant circumference of the tapered surface.

Abstract: A parallelepiped housing contains a displacement-transfer plate being slidable along the surface, and a pair of micrometer heads of the same shape and same size are mounted on a rear plate of said housing headed toward the front in said housing maintaining parallel and definite distance to one another.A differential lever is formed in such a length that the pivot parts at each tip of said pair of micrometer heads are rendered to serve as fulcrums, respectively, and a non-bisected part in the lengthwise direction of said lever is rotatably and pivotally supported as a point of application at the said displacement-transfer plate.A rectangular slider block is so constructed as to be guided along side plates and a base plate forming said housing, and is always pulled rearwards by a resilient means. Said slider block and said displacement-transfer plate are fastened via a determined space.Whereby coarse and fine adjustable displacements are realized at the displacement-transfer plate.

Abstract: A compass having a magnetic element pivotally mounted in a housing, the housing including a light source and one end of an array of fiber optic bundles and the element carrying a reflector and/or an aperture to selectively permit light from the source to reach a selected one or more of the fiber optic bundle ends within the housing in dependence upon the orientation of the element relative to the housing about the pivot axis of the pivotal mounting.

Abstract: A flux gate unit for producing an output representing the directional orientation of the unit with respect to the horizontal component of the earth's magnetic field, and in which a saturable flux gate magnetic core structure is mounted for leveling movement relative to associated flux gate coil means, in a manner enabling maintenance of the core structure substantially continuously in level condition while avoiding the necessity for leveling movement of the flux gate coils, and thereby avoiding the necessity for connection of electrical leads to a movable part.

Abstract: Our invention relates to a novel electromechanical method and apparatus for detecting and representing the north direction and/or the heading of an object or vessel in analog and/or digital representation.

Abstract: An apparatus and method for drying seed corn using cobs and unusable seed corn as fuel for heating the drying medium for drying the seed corn. Products of combustion from an incinerator for incinerating cobs is supplied to a heat exchange medium circulating apparatus having a first heat exchanger and a series of second heat exchangers connected in parallel with each other and in series with the first heat exchanger, and a means for circulating a heat exchange medium through the circulating apparatus for heating the heat exchange medium. A plurality of ear corn dryers for drying seed corn in the form of ear corn each have a gaseous drying medium circulating apparatus control system for alternately circulating a gaseous drying medium in opposite directions through the dryers. Each drying medium circulating apparatus is connected to one of the second heat exchangers for recirculating said gaseous drying medium through the second heat exchanger after it has been circulated through the dryer.

Abstract: A method and apparatus for drying photographic strip material utilizes a multiple chamber dryer having individual temperature and humidity control apparatus with a ducting system for delivering heated air from one chamber to another chamber as determined by the humidity control system.

Abstract: A magnetic audio tape comprises at least two tracks in one direction of advance of the tape. Each of the tracks has pre-recorded sections at sufficient intervals therebetween, with the recorded sections of one of the tracks being staggered with respect to the recorded sections of the other track in such a manner that all of the recorded sections of the tracks are not opposite to each other in the transverse direction of the tape. Each of the recorded sounds in the recorded sections of one track is closely related as a learning aid to the recorded sound of the staggered adjacent recorded section of the other track.

Abstract: A display device which imparts to the observer an illusion of depth. The device includes a partially silvered front mirror, illuminating means disposed behind this front mirror, and a fully silvered rear mirror positioned behind the illuminating means such that its reflective surface is parallel to and facing the partially silvered front mirror. The illusion of depth results from the successive reflections of the light from the illuminating means between the two mirrors, establishing a series of virtual images which appear to extend back into the device.

Abstract: A means for identifying slings of a particular manufacturer comprises an integral identification member having at least one end of the member integrally formed into the junction of the eye of the sling and a second identification member attached to the integral identification member.

Abstract: A low energy sign contruction is illustrated for illumination of signs of the type having translucent illuminated faces. An opaque sign border is bridged by a reflector extending generally parallel to the illuminated face and having a truncated sawtooth profile. For single sided signs, one set of sawtooth points is truncated; for dual sided signs, both set of sawtooth points are truncated.Bayonet mounted lighting sockets are mounted at apertures in the respective truncations and utilize the metallic reflective surface as one side of a low voltage (10.5-volt) AC circuit. The reflector forms a cooled heat sink mounting the bulbs as well as a supporting matrix. The lamps, as mounted to this supporting matrix, are typically spaced at distances which do not exceed twice the distance of the lamp filament to the translucent face. By the expedient of using 14-volt lamps, prolonged lamp life with low energy illumination results.

Abstract: An automatic and semiautomatic small caliber conversion system for automatic or semiautomatic shotguns and rifles such as, for example, M-16 and AR-16 rifles, including a uniquely designed three element structure and associated ammunition feeding means to permit the use of smaller caliber, inexpensive ammunition in rifles and shotguns designed originally for larger caliber ammunition. The system includes a bolt/receiver assembly which easily replaces the bolt carrier of the, for example, M-16 rifle, and a magazine assembly which can be inserted by hand into any standard, for example, .223 round M-16 magazine. The bolt/receiver assembly is made up of three sub-assemblies, a receiver, a bolt, and a recoil spring. The receiver sub-assembly includes a section of a circle with a short barrel section in the front which fits into the M-16 chambers, a receiver lug at top rear to locate it within the M-16 chamber and prevent its rotary or linear motions and a guide rail.

Abstract: A cartridge magazine comprises a curved, molded, plastic case with a spring-pressed follower to urge the stack of cartridges therein toward the upper end for ejection. This follower is pivoted on the end of the spring for forward and backward angular movement, and has a post on its forward end to engage the spring.A closure plate on the lower end of the case includes a latch which is retained against release by the post on the follower when the follower is at the lower end with the magazine filled with cartridges.

Abstract: A fishing bob and hook setting device comprising a bent wire member having a generally L-shape with vertical and horizontal sections, an eye at the junction of the two sections, and an eye at the free end of the horizontal section. The vertical section adjustably mounts a bouyant member having a flat drag surface at the top and a weight therebeneath. The fishing line is threaded through the eye at the junction of the vertical and horizontal sections of the wire and is secured to the eye at the free end of the horizontal section to depend therefrom with a hook thereon. A slight downward pull by a fish tips the device to its side where the drag surface engages the water and on the occurrence of further pulling action by the fish sets the hook. The bouyant member may be frictionally adjusted on the vertical section or, the section may be threaded for vertical adjustment of a buoyant member. The horizontal section or arm of the wire may also be bent for fine adjustment.

Abstract: Fishnet apparatus includes a pair of clam shell type folding covers springloaded to the open position and actuable by a thumb release.

Abstract: A fishing lure comprising a unitary piece of sheet stock including a central sheet section and integral front and rear flange sheet sections, inclined at different angles relative to the central sheet section, extending in the same direction away from the central sheet section.

Abstract: A fishing lure in the form of a facsimile fish made of flexible material in which the hook extends through a chamber in the body of the fish, the forward end of the hook being bent so as to engage an abutment in the chamber to prevent the hook being pulled forwardly through the lure and to prevent its rotation. There is also provided a baffle plate at the rear end of the tail to wag the tail from side to side, the baffle plate being attached to the tail at two vertically spaced portions only so as to allow water to freely pass across the baffle plate.

Abstract: A lure has an element rotatably mounted in proximity to the lure hook structure on the monofilament and includes an off-center portion 8, able to create a resistance when a traction is exerted on the monofilament, thereby causing its transverse displacement with respect to the latter.

Abstract: In a device using an impregnated paper with a chemically reactive marker, the device includes a box-like housing having a translucent planar surface with light projected from within the box onto the rear side of the surface. A paper impregnated with an indicator dye resulting in an opaque paper is placed on the surface. Marker pens having substance chemically reactive with the indicator dye are used to mark the paper. The chemical reaction between the marker solution and the coating renders the so-marked areas translucent for passage of light through the paper in the region so-marked. Transparent dyes are utilized in the markers to combine with the color of the indicator dye to form a third color which is a combination of the two colors.

Abstract: A trick rope device for forming a noose in a horizontal plane includes a rope member having one end formed into a noose. The other end of the rope is swiveling joined to a handle portion. A mechanism is provided for controlling the speed of rotation of the rope member. A flashing light unit is disposed within the handle portion, wherein the flashing of the light unit is directly dependable upon the speed of rotation of the rope member.

Abstract: An amusement set for use particularly by children comprises a carrying case having a pair of mating hollow housing members which are hingedly attached together to open and close along a peripheral seam line. Preferably, each of the housing members is formed of integrally molded plastic material and includes a bottom wall, an outer side wall and a top wall which are shaped to form the outside wall and roof structure of a toy castle. A handle is provided for the carrying case including a band which is formed in a loop and pivotally attached to one of the housing members for movement between an upright position for use in transporting the case and its contents and a generally horizontal position wherein the band forms the wall of a lookout tower for a tree house. The amusement set includes one or more toy figurines representing fictional play characters such as are developed in the theme of a television show for children and the like.

Abstract: Puppet-like apparatus includes a manikin head having a face with a hinged jaw. A drive motor is connected to the jaw to reciprocate it. Within the head are a radio receiver having a level detector which responds to the audio peaks to actuate the drive motor in forward and reverse directions to open and close the jaw thereby simulating speech. In addition, an exterior microphone is provided for speech input.

Abstract: An automatic control for a grinding system is disclosed for controlling the advancement of a grinding wheel into a workpiece to provide a substantially constant time span between the termination of the operation of the feed means which advances the grinding wheel and the attainment of the final size of the workpiece for each workpiece machined. The control generates a reference time span and if the actual time span deviates by more than a preselected time period from the reference time span, the control develops a control signal adjusting the advancement of the grinding wheel during the grinding of the following workpiece.

Abstract: An abrasive cleaning apparatus configured for use in combination with a mobile chassis comprising a base to fasten the abrasive cleaning apparatus to the mobile chassis, an adjustable nozzle support to operatively support a plurality of nozzles thereon, and an interconnecting support to connect the base with the nozzle support. The interconnecting support is rotatably attached to the base to permit the nozzle support to be rotated in the horizontal plane to position the nozzles horizontally relative to a work surface. The nozzle support is pivotally connected to the upper portion on the interconnecting support to permit the nozzle support to pivot in the vertical plane and thus position the nozzles vertically relative to the work surface. The nozzle support comprises a nozzle holder pivotally attached at the end thereof. The pivotal attachment of the nozzle holder permits angular adjustment of the nozzles relative to the work surface.

Abstract: A molding clip assemblage is disclosed which comprises a base plate fastened such as with a double-faced adhesive tape to the peripheral edge of a window frame for enclosing a glass windshield and clips attached at proper intervals to the frontal side of said base plate. A given molding, when forced in between the base plate adhering to the peripheral edge and the clips secured to said base plate, can be safely mounted in position without inflicting any damage at all upon the peripheral edge. The molding thus secured serves to provide the windshield with a seal perfectly impervious to rainwater and dust from the surroundings.

Abstract: An anchoring device for use on an access door having an outer framework adapted to be fitted in a rough opening formed in a ceiling or wall and having an exposed frame flange for hiding the rough opening, the anchoring device having a pressing member having the leading end urged to engage the ceiling or wall and forming a U-shaped bracket in cooperation with the web portion and frame flange of the outer framework and an anchor urging the pressing member into engagement with the framework.

Abstract: A method for fixing a glass sheet in a sash which is to surround the entire peripheral edge of the glass sheet and has a channel defined by a bottom wall and side walls; and the resulting assembly of the sash and the glass sheet fixed therein. The glass sheet is set in the sash, and then fixed elastically in the channel at positions spaced at intervals along the peripheral edge of the glass sheet. Then, an elastic sealing material is filled along the entire peripheral edge of the glass sheet between each of the surfaces of the peripheral edge of the glass sheet and each of the side walls of the channel opposite thereto, leaving an unfilled space at the bottom of the channel. Subsequent hardening of the sealing material affords a substantially fluid-tight seal along the entire peripheral edge of the glass sheet between each of the surfaces of the peripheral edge of the glass sheet and each of the side walls of the channel opposite thereto, and achieves the fixation of the glass sheet in the sash.

Abstract: The side-by-side panels of a standing T-rib roof can be provided in any necessary lengths due to a smooth telescopically interfitting arrangement lengthwise between adjacent panel sections. One end portion of each panel section is tapered without cutting or crimping the metal thereof and when slipped endwise into the untapered end portion of another panel section forms a smooth slip joint of uniform cross sectional dimensions in relation to the complete assembled panel. An improved clip for attaching roof panels to underlying purlins features a vertical standoff space between the clip attaching feet and lateral panel support branches thereabove so that a thermal insulation blanket can be placed in the stand-off space. This vertical stand-off space greatly decreases the thermal conductivity of the metal roof and, therefore, increases the thermal value.

Abstract: A retainer assembly for securing insulation material or similar material in mounted position against or alongside of a wall surface or the like. The retainer assembly includes a longitudinally extending extension or stud having a retaining washer longitudinally adjustably mounted thereon in a secure and positive manner. In one embodiment, the extension is adjustably supported by use of an extension holder which adjustably connects to the extension and is welded or otherwise bonded to a furnace wall. In another embodiment, the extension is adjustably mounted in a bore whereby the end of the extension having the retaining washer thereon may be oriented to secure the insulation material or liner in predetermined relation to the supporting surface or wall such as refractory brick or the like.

Abstract: Wire-mesh webs formed from interengaged flattened spirals, especially chain-link fencing, upon manufacture coiled by twisting the planes of the spirals so that they fit tightly together and almost coincide with axial planes of the roll. During the coiling process, one to three tension elements are introduced into the corresponding troughs of the successive undulations formed by the successive spirals to maintain the latter in their substantially erect condition. The result is a highly compact roll.

Abstract: An apparatus for an envelope processing machine in which opened envelopes are serially presented by the machine to a work station in the machine for manual removal of the contents of each serially presented envelope. The apparatus comprises means operating responsive to the hand of a person being moved into and out of a contents removal attitude to a presented envelope to control the serial presentation of envelopes. In a preferred embodiment the apparatus comprises a light source and a photoelectric cell mounted in a spaced apart relationship to each other and to a presented envelope in the machine.

Abstract: An automatic photographic print and film packaging mechanism inserts individual orders of prints and film into multilayered packaging envelopes formed in a continuous strip. The mechanism sequentially seals the sides of the envelopes and cuts the envelopes from the strip. The mechanism has provision for either sealing the top of a cut envelope and depositing the same in a first collection station or depositing the cut envelope with the top unsealed into second collection station.

Abstract: The apparatus for sealing the heads of containers with a biaxially oriented plastic film comprises a horizontal conveyor for conveying the containers to be sealed, and a horizontal endless belt disposed above the conveyor in parallel thereto and including a lower traveling portion adapted to be driven in the same direction as the conveyor at a speed equal to the speed of the conveyor.

Abstract: An automatic film conveying and packaging mechanism for conveying cut film lengths forwardly from a film cutter to a packaging envelope while maintaining continuous contact with the film lengths between a pair of opposed upper and lower conveyor assemblies and driving the lengths directly into the packaging envelope in stacked relation to each other with the trailing ends thereof positively disposed in substantial alignment with each other and in rearwardly spaced relation to the discharge end of the upper conveyor assembly.

Abstract: A pendulum clock mechanism may have an escapement coupled to a conventional pendulum bob by means of an anchor arbor which is frictionally or slip coupled to an anchor having at least a pair of pallet pins symmetrically disposed thereon for engagement to an escape wheel. The pallet pins engage the escape wheel in a conventional manner to regulate the operation of a conventional clock gear train. The anchor automatically rotates to a position of design equilibrium regardless of improper vertical installment of the clock or excessive torques applied to the escapement mechanism.

Abstract: This disclosure relates to a chain welding machine for the electric resisce pressure butt welding of a length of chain having interlinked chain links pre-bent into a C-shape. The machine comprises a pair of oppositely movable upsetting tools for engaging the opposite rounded ends of a chain link to be welded. A drive train is provided for each upsetting tool and one of the drive trains includes as an element thereof a single acting hydraulic cylinder. A hydraulic system for activating the cylinder includes a hydraulic pump connected via a feed line with the cylinder through a control valve, pressure regulating valve and check valve. The check valve is arranged to block flow of hydraulic fluid from the cylinder during a portion of the upsetting stroke of the machine and is unblocked by the control valve after termination of a welding cycle.

Abstract: Disclosed is a secondary air control valve device for feeding secondary air controlled in correspondence with the engine load into an exhaust system having a catalytic converter for reducing hydrocarbons (HC), carbon monoxide (CO) and nitrogen oxides (NO.sub.x) contained in exhaust gas emitted from an internal combustion engine. The device is simple in construction and can vary the predetermined amount of secondary air in correspondence with the changes of the characteristic of the catalyzer which may vary as the catalyzer is activated, so that the amount of the secondary air is controlled for maintaining the highest converting efficiency for a long duration of use of the vehicle which has this device mounted thereon.

Abstract: A device for extracting energy from wave energy and comprising a plurality of chambers adapted for pressurizing and discharging a working gas, means for collecting the pressurized working gas, and a mechanical device such as an air turbine to which the collected pressurized working gas is conducted to extract energy therefrom and drive a device such as an electric generator.The pressurized working gas may be collected in a duct which connects the chambers in parallel relationship and is provided with means for applying a smoothing pressure to smooth out pressure fluctuations of the pressurized working gas. Alternatively, the chambers may be connected together in series relationship so that the pressurized working gas from one chamber is collected by an adjacent chamber as it progresses along the series to the mechanical device.

Abstract: A hydraulic follow-up for use with a hydraulic system placed between a rotating input member and a rotating output member. The hydraulic system is a hydrostatic transmission for driving a tractor, and comprises a hydrostatic pump and a hydrostatic motor driven by the pump. When the hydrostatic pump is angularly shifted with respect to the input member, the shifting is controlled by the hydraulic follow-up, which also shifts the motor in relation to the output member.

Abstract: A load responsive fluid power multiple load control system using a first type of load responsive direction control valves responding to upstream pressure differential between inlet and load chambers together with a second type of load responsive direction control valves responding to down stream actuator pressure or pressure differential. Load pressure signals are phased by check valve logic system to the output flow control of fixed or variable displacement pump which maintains a constant pressure differential between pump discharge pressure and highest of the load pressures.

Abstract: A load responsive fluid power control system using servo type flow control valves and fluid motors supplied by a variable displacement pump. The pump displacement is regulated by an electro-hydraulic control valve in response to an electrical signal proportional to motor load or motor load pressure to vary the pump displacement to maintain a controlled constant or variable pressure differential between the pump outlet pressure and motor load pressure or to vary the pressure differential between pump outlet pressure and motor load pressure in response to a signal from a computing device. The pump control also limits maximum and minimum system pressures.

Abstract: A hydraulic system for a vehicle having an open center type braking booster and the other hydraulic operating system e.g. power steering having open center type valve mechanism, both being in fluid communication with a discharging port of an engine driven pump for receiving input fluid flow through a flow divider.The invention provides, at an early stage of the braking operation, means for fluid communication between the discharge port of the power steering system and the inlet port of the booster other than communication between the discharging port of the flow divider and the inlet port of the booster.

Abstract: A tail seal for a tunnelling shield, particularly for use in the bentonite process, in which a seal is formed of short brush-like material mounted on a flexible support and resiliently urged by a body of closed cell expanded material, such as neoprene. In a preferred form the flexible support is secured both fore and aft and the closed cell expanded material has an inflatable member embedded therein.

Abstract: An attenuator, for use in a fluid system for reducing pulsations and transients, having a vortex chamber with a plurality of tangential inlets and one or more outlets with converging nozzles being provided in the inlets to increase the inlet flow velocity and to provide diode action. At least one elbow is provided in the outlet line adjacent the vortex chamber outlet with a second elbow being provided at a distance from the elbow adjacent the vortex outlet, approximately equal to the radius of the vortex chamber. The second elbow is not needed when outlet line discharges to a sump or to the atmosphere.

Abstract: The gas conditioner comprises a cooling device including a pulsing tube and switching means for alternatingly connecting said tube to a source of compressed gas and to a consumer. The switching means comprises a double-diaphragm pneumatic relay having a control chamber, an inlet chamber and an outlet chamber. The inlet chamber communicates with the source of compressed gas, and the outlet chamber communicates both with the pulsing tube and alternatingly with the inlet chamber and with the consumer, the outlet chamber communicating with the inlet chamber via a hollow rod overlapped when the pressure in the control chamber approximates that in the inlet chamber. A gate is mounted at the outlet of the outlet chamber, which opens upon the closing of the hollow rod to establish communication between this last-mentioned chamber and a line for supplying cooled gas from the outlet chamber to the consumer.