Abstract: A wire device is pivotally attached to one ear post of a head positioning mechanism of the type used in cephalometric radiography. The wire may be pivoted to an indicating position wherein one of its ends indicates the proper location of the orbital area for correct head orientation. The wire provides a straight line on the X-ray film which represents an indication of the Frankfort plane. The wire may also be pivoted to an out of the way retracted position.

Abstract: Hydroponic aggregate is contained in a garden box in which plants are grown. Nutrient solution is supplied through a liquid tube from an airtight tank to an enclosed housing disposed beneath the aggregate on the floor of the box. Outlets are provided from the housing for discharging the solution to the aggregate. Air is supplied to the housing through an aeration tube. Flow of solution continues until a pool is built up on the box to a depth sufficient to submerge the lower end of the liquid tube. Air is then unable to flow up the liquid tube to displace the liquid within the tank and the liquid flow is thus stopped. A drain hose for draining off excessive liquid that may build up in the box serves alternatively as a liquid level gauge.

Abstract: A pressure transducer includes an electromagnetic drive coil which vibrates a thin walled cylinder at a natural vibrational mode. A capacitor unit senses the vibrational frequency of the cylinder and gives an output signal corresponding to the pressure differential between a fluid contained within the cylinder and a vacuum reference that is maintained adjacent to the exterior surface of the cylinder. Electric heaters maintain a constant operating temperature of the transducer.

Abstract: A ceiling includes arched panels supported by box type beams which are adjustable in width. The sides of the beams are provided with inclined grooves in which the edges of the panels are received. The panels are flexible and tend to unflex to a flat shape, thereby retaining their edges in the beam grooves. The ceiling beams include beam members which are spaced apart by adjustable spacer brackets. A bottom panel of each beam may be opened to gain access to the beam for interior adjustment of the brackets. Light fixtures are mounted within the beams above translucent panels incorporated in the bottom beam panels. Curved wall panels supported by wall beams may be employed in combination with the ceiling. In an alternative form of the invention, upright box type beams support curved wall panels and partitions.

Abstract: A method of constructing a model tree structure and the article resulting therefrom constitute the present invention. First a full three-dimensional pattern is constructed from wire and tin-lead. The pattern is then partially flattened and placed in a rubber mold. The mold is filled in around the pattern with rubber and the entire mold with the pattern in place is heated to vulcanize the rubber and form a mold cavity conforming to the configuration of the pattern. A casting metal is provided which preferably is at least 98% lead. Up to 2% antimony may be added to increase flow characteristics. It is also permissible to include a quantity of tin. The part is cast in the mold using centrifugal casting techniques. After the part has solidified and been removed from the mold it is bent into full three-dimensional form corresponding generally to the initial shape of the pattern.

Abstract: A self-cleaning filter for a particulate-laden gas stream. A circular filter surface is positioned in the gas stream exhaust and includes a centrally mounted drive train. An elongate rotor transverses the face of the filter surface and is centrally coupled by a flexible joint to the drive train for rotative drive. Wheels mounted on each end of the rotor engage a circular track at the periphery of the filter surface; one wheel is spring biased to continually force the wheel at the opposite end of the rotor against the track. A vacuum cleaning head is associated with the arm of the rotor opposite the spring biased wheel to remove particulate matter collected on the filter surface.

Abstract: A dust bag for applying powder insecticide to animals includes an outer mesh bag, an inner mesh bag, a waterproof lining between the two bags, and a double bag cartridge for containing the insecticide. The inner bag is placed inside of the outer bag with a dust chamber presented between the bottom ends of the bags to receive powder passing through the inner bag. The inner bag is characterized by a closer mesh weave than the outer bag, and the two woven bags cooperate with the waterproof lining to prevent rainwater from contaminating the powder while metering the flow of the insecticide to the animals. The cartridge is supported on the bottom of the inner bag and comprises a double bag arrangement with offset holes in the two bags for preventing water entry. The invention also contemplates a novel closure structure for a bag wherein a U-shaped hanger is coupled with a flap which closes an opening in the bag.

Abstract: The present invention relates to a novel trailer tongue assembly and a method of mounting a tongue frame on a trailer vehicle. A generally V-shaped tongue frame is pivotally coupled with the trailer vehicle at a point located below the trailer main frame and substantially co-planar with the supporting wheel and axle assembly. An elongated strut member is rigidly coupled with the tongue frame and extends toward the trailer vehicle along a vertical plane bisecting the two legs of the tongue frame. A leaf spring is coupled with the strut member and in turn is coupled with the trailer vehicle. The leaf spring is disposed so that its major plane of flexure will be perpendicular to the plane of the tongue frame.

Abstract: A device which raises liquid food from a container and drops it through circulating smoke back into the container to impart a smoke flavor to the liquid. A pump or conveyor draws the liquid from the bottom of the container and forces it upwardly through a vertical conduit which terminates at its top end in a flared outlet located well above the container. An adjustable hood surrounds the conduit outlet to deflect the liquid back into the container without spilling. Conical baffles mounted on the conduit serve to deflect the liquid and increase its exposure time to the smoke.

Abstract: A hydraulic transmission operates throughout a continuous range between a neutral condition and a direct drive one to one ratio of input shaft speed to output shaft speed. The input shaft carries a rotor which provides a hydraulic pump for the input side of the transmission. Reciprocating pistons of the input pump move in camming fashion against an input side swash plate as the input shaft rotates. The fluid that is displaced in the input side pump is directed into an output side pump which is carried on the output shaft. Reciprocating pistons of the output pump are hydraulically forced against an output side swash plate to effect rotation of the output shaft. A sleeve and lever assembly controls the stroke length of the pistons of the input pump in order to vary its fluid displacement relative to that of the output pump, thereby varying the transmission ratio.

Abstract: A method of providing asphalt base coating material for pipe and a novel container for holding the coating material are the subject of the present application. An asphalt coating material comprising 10% to 25% by weight asphalt and 75% to 90% by weight sand-lime aggregate is used to coat the weld joints of pipe previously coated with similar material along its length for corrosion protection. The weld joint coating material is delivered to a coating station in easy to handle small size containers. The containers comprise no more than about 5% of the weight of the material contained thereby and are constructed primarily from a material containing at least one of the members of the group consisting of polyethylene, polypropylene and polyethylene-polypropylene copolymer. The containers are placed in a chopper where they are reduced in size along with the coating material. The chopped mixture of particles are then melted and stirred until a relatively even mixture of a flowable liquid is presented.

Abstract: A device for reducing noise interiorly of air distribution ducts is comprised of at least one sound attenuating module which is adapted to be placed adjacent to a noise source or installed interiorly of conventional air distribution ducts. The module has a plurality of adjacently sandwiched glass fiber layers which are separated from each other by aluminum side walls. Each one of the layers is sealed by an aluminum membrane enclosure (with the outer membranes being substantially airtight to prevent any resultant friction between air passing through the duct and the glass fiber). Noise is reduced as the sound pressure (developed by the conditioned air flow in the duct) alternately contracts and expands the compliant glass fiber media interiorly of the module, thusly dissipating energy in the form of friction between the glass fibers that are in each layer.

Abstract: Method and apparatus for minimizing or preventing the deleterious skin heating effects associated with conventional short wave diathermy treatment. The disclosed method includes attenuation of the electrostatic field transmitted by the applicator head and transcutaneous transmission of the radiated electromagnetic energy substantially unimpeded to the deep body tissues to be treated. The attenuation of the electrostatic field is performed by an electrostatic shield, which is adapted to be positioned on the diathermy applicator head between the radiating electrode and the patient receiving treatment. However, the radiated electromagnetic field, which is primarily responsible for the therapeutic generation of heat in relatively deep body tissues, passes through the shield substantially unimpeded. The shield comprises a plurality of narrow, preferably metallic, spaced apart strips and an electrically conductive loop which surrounds the strips and is coplanar therewith.

Abstract: A method of extracting highly viscous nonfracturable oil from earthen deposits is presented by the instant invention. A plurality of radially extending horizontal conduits direct heated hydrocarbon vapors into the formation. The vapors are selected to have a boiling point above the pour point of the viscous oil. Thus, as the vapors rise in the formation, they will be in heat exchange relationship with the viscous oil to cause the latter to flow downwardly. In addition to the thermal exchange of energy, the vapors will move toward molecular equilibrium with the viscous oil formation. This latter action will cause the vapors to "strip off" the more volatile, lower boiling components, from the descending liquid oil. The liquified oil, on the other hand, will condense the less volatile, higher boiling point fraction of the vapors.

Abstract: A removable link formed of two identical hook members each having integral base, shank and bight portions and being pivotally pinned in reverse confronting engagement at the junctures of the shank and base portions. In a closed position, the bases thus extend in opposite directions while the bight portions overlie each other to form a continuous, teardrop loop.

Abstract: A hinge construction particularly designed for exterior usage is provided by the present invention. Two planar sections are comprised of complementary land portions and cutaway portions disposed in spaced apart relationship along the length of the hinge. The cutaway portions of one section receive the land portions of the other section. With such configuration only a single thickness of metal separates the hinged member from the mounting member. First and second barrel mounting sections extend in the same direction outwardly away from the respective first and second planar sections. The two barrel mounting sections in turn mount complementary hinge barrels which, when positioned in alignment, receive a hinge pin. As a result of the hinge mounting sections projecting outwardly away from the hinged member and the mounting members, a weather shield is formed to help keep moisture and dirt out of the opening that is closed by the door.

Abstract: A method of sandblasting and coating the interior surface of pipe is provided by the present invention. A plurality of legs extend outwardly from a central mounting plate and are adjustable in length and angular disposition to accommodate different sized pipe. The mounting plate has a central opening for receiving an elongated lance of either a painting or sandblasting tool. The lance carries a collar which is adapted to abut the mounting plate. A spring-biased locking pin on the mounting plate is received by the collar to releasably lock the two plates together.The method of the invention comprises positioning the aforedescribed device in one end of the pipe and then securing a rope of a length equal to that of the pipe to the device. Next, a lightweight bucket is positioned in front of the device and the rope is coiled inside the bucket. A blast of air is then passed through the lance to move the bucket the length of the pipe.

Abstract: A self-propelled implement is specially constructed to plant seeds such as beans between rows of a tall growing crop such as wheat. The frame members of the implement are supported above the growing crop on top of selectively spaced front and rear wheel assemblies which are narrow enough to pass between the rows of the growing crop. Each wheel is entirely covered and is provided with a fender that tapers to an inclined forward edge to facilitate passage of the implement through the field. An engine which powers the implement also operates seeding mechanisms which are associated with the wheels.

Abstract: A carrying case includes hinged together upper and lower sections in which art supplies are carried. The upper section presents a plurality of separate compartments which are adjustable in size and shape. A sliding cover panel fits over the compartments of the upper section. The lower section has an open bottom for the display of a picture which is fronted by a transparent panel and backed by a mat board. An inner frame member presses the panel and mat board together and provides a storage space in which a supply of paper is kept.

Abstract: A template provides assistance in the lining of sheet music paper. Closely spaced, parallel slots are formed through the template to guide a writing instrument in drawing the lines. Adjustable guides are attached to the template beside the slots to indicate where the lines for each staff are to be drawn.