Abstract: The traction device of the invention is for use with a vehicle wheel supported by lugs and having a tire. The traction device has a base with openings for the reception of at least two but less than all, the lugs for supporting the base. A plurality of spaced radial arms are supported by the base with each having an end adapted to extend beyond the outer periphery of the tire and protrude into an icy surface. Each of said ends is adapted to lie in a vertical plane adjacent to the outer side wall of the tire. The end of each arm may advantageously be free to move in and out while being spring biased outwardly, be threadably attached to the arm for movement inwardly and outwardly, or be pivotally connected to the arm for movement into and out of an operative position. The said ends may extend different distances beyond the outer periphery of the tire. Preferably, the base is secured on less than all of the lugs and has a bearing recess accommodating a nut on a lug to which the base is not secured.

Abstract: A package comprising a tube of flexible material having a first and second end, a first ultrasonic seal extending transversely across the tube and closing said first end, a second ultrasonic seal extending transversely across the tube and closing said second end, a chamber formed by said tube and end seals for containing contents, a hollow stem extending through and supported by the second seal with an inner end inside the chamber and an outer end outside the chamber, and a removable seal closing the outer end of the stem, said stem seal being removable when it is desired to dispense the contents from the package.

Abstract: A package comprising a cylindrical plastic tube closed at each end by an ultrasonic band seal. The seal at one end has a sealed region which is narrower than any portion of the other seal whereby squeezing of the package produces an immediate one-shot dispensing of liquid contained therein by causing rupture of the narrow region of the seal. Various package forms include perpendicularly arranged bands to provide a tetrahedral shape, a tab extending beyond one seal to provide identification of the contents of the package, notched seals providing a tear open package, and a multiple package construction in which one fluid containing tube is contained within another.

Abstract: A device for separating a microscope slide into two separate sections has a arm mounted on a horizontal pivot carrying a downwardly extending glass cutter. A releasable member maintains the arm in an elevated position. A slider advances a microscope slide under the cutter releasing the releasable member to lower the cutter onto the microscope slide. A striker on the arm strikes one section of the cut slide to separate it from the other section as the cutter drops off the trailing edge of the slide. The slide then raises the arm for the restoration of the releasable means preferably by a cam attached to the arm. Advantageously, the releasable member is spring biased to its position to maintain the arm in an elevated position and is released by a cam attached to the slide. Advantageously, the slide is supported on a bed having an opening for the downward passage of the section of the slide struck by the striker with the opening having a edge underlying the cut made in the slide by the cutter.

Abstract: A seal for sealing between a hollow outer shaft and an inner shaft concentric with the outer shaft has a seal ring with a plurality of segments extending around the inner shaft. The seal ring has an outer circumferential face confronting the inner surface of the outer shaft, a first side face exposed to a region of high pressure and a second side face confronting a mating ring secured to the inner shaft and having a portion thereof exposed to a region of lower pressure. A segmented compensating ring extends around the inner shaft and spaced from the seal ring in the region of high pressure. A flange secured to the inner shaft limits the axial movement of the compensating ring away from the seal ring. A continuous balancing ring between the seal ring and the compensating ring has a pair of conical faces mating with conical faces on the seal ring and compensating ring, respectively. Advantageously, hydrodynamic and closed pockets in the bearing surfaces are used to vary the contact forces.

Abstract: A game and exercising device has a longitudinal substantially rigid body having a pair of ends with a pair of spaced and opposed handles at each end of the body. The handles lie in substantially the same plane and are rigidly fixed with respect to each other and the body. In a method for the joint exercising of two people one person grasps a pair of spaced handles fixedly connected to a pair of opposed spaced handles and a second person grasps the opposed spaced handles and each person exerts a force on the connected handles in conjunction with or opposition to the force exerted by the other person. In a method of playing a game one person grasps a pair of spaced handles fixedly connected to a pair of opposed spaced handles and a second person facing the first person grasps the opposed spaced handles. Each person exerts a force on the connected handles in an attempt to force the other person to move.

Abstract: A picture frame is comprised of a corner clip for each corner of a rectangular picture assembly, each corner clip including a pair of legs joined at a vertex portion and extending at right angles to one another. Each leg has an end portion extending around an associated edge of the picture assembly to the front thereof for engaging the same. Each leg and associated end portion is made of a thin strip of material extending in a plane perpendicular to the picture assembly with the end portion thereof presenting a thin edge to the front of the picture assembly. Cord means extends between a cord engaging means of each corner clip to urge the corner clips toward a central location of the picture assembly and the end portions into securing engagement with an associated edge of the picture assembly.

Abstract: A self-wicketing ticket is provided by a tag, one side of which is coated with a pressure sensitive adhesive covered by a backing removable to expose the pressure sensitive adhesive. The tag is provided with a wicket providing means formed by a strip portion thereof having a reinforcing tape thereon to provide additional strength thereto.

Abstract: The invention is for a method for analyzing a stream of liquid such as blood and apparatus for carrying out the method. While it is known to present a moving column of liquid in a viewing cell, control of the circumference of the column to control its field size and lighting the column from the end opposite the viewing end has not been accomplished. The invention involves the method of passing a first liquid in a column in a confined space to a transparent panel, introducing one or more liquids of different colors to form a hollow column exterior of the first column, exhausting the liquids from adjacent the panel, directing light upwardly at the lower ends and through the columns and varying the pressure of one or more of the liquids to vary the circumference and speed of the first column. Apparatus is provided to carry out the method.

Abstract: A pump assembly for use in fire fighting service is constructed of a single stage main pump and a two stage booster pump connected in series with the discharge of the main pump being connected to a first high flow rate fire fighting application and to the inlet of the booster pump and the discharge of the booster pump being connected to a second low flow high pressure fire fighting application. The impellers for both the main pump and the booster pump are mounted on a common rotating shaft so as to be driven thereby. A flow restriction and conduit means is provided to reduce the pressure on the booster pump seal. A by-pass conduit is arranged to conduct flow from the discharge of the booster pump back to the inlet of the main pump so that whenever the main pump is operated there will be flow through the booster pump to prevent overheating thereof.

Abstract: A building element useful in constructing plastic boat hulls and methods of making the element. The building element includes a plurality of glass fibers in the form of roving which are substantially parallel to each other, a resin binding the glass fibers together, and a plastic sheet covering one or both sides.The building element may be continuously made by passing a plurality of strands of glass fiber roving through a perforated guide plate into a trough of resin formed by the bight of a pair of rollers, feeding a plastic sheet over each roller into said bight to protect the rollers from the resin and to form a sandwich structure with the resin impregnated strands of roving being enclosed within the plastic sheets, and cutting across the plastic sheets and resin impregnated glass strands at a desired angle to form a stamp element.The building element may also be made by passing glass fiber roving through a resin pot and winding the roving around a drum which is covered by a polyethylene sheet.

Abstract: In school jewelry such as school rings, bezel ring top keys, and ring top charms used as souvenirs and prom favors, a school ring top is provided having a beveled bezel and a stone with a faceted pavilion. The school ring top closely simulates the appearance of a die struck or cast ring top and provides clear and legible letters spelling out school-related information in its bezel which is made from a developed photographic film sheet with a reflecting backing layer. The bezel is slanted and of sufficient height for easy reading from a side view as well as a top view, and for accommodating a stone with a faceted pavilion. Three methods of making the miniature ring top are disclosed. One method includes doming the bezel by applying pressure to form a dome section, and then cutting a bezel out of the dome section. A second method includes cutting a bezel strip, removing a pie section from the bezel strip, and then doming by placing the ends of the pie section together.

Abstract: A utility line Y support structure having a tubular pole adapted to be erected to extend upright from the ground, a pair of Y arms extending upwardly and outwardly from the top of the pole, connector means connecting the bottom of the Y arms to the top of the pole, and a crossarm connected between the upper portions of the Y arms, the Y arms being constructed of a structural element having a generally C-shaped cross-section, and the crossarm comprising a truss with lattice work.

Abstract: A prosthetic spur for fighting cocks made of aluminum and provided with a socket adapted to fit onto an existing stump of the fighting cock where its natural spur would grow and having a pointed arcuate shape.

Abstract: A push release door opener for aluminum storm and screen doors having a push handle comprising a lightweight, inexpensive aluminum push rail with a C-shaped cross-section with top and bottom grooves forming a track and having a first and second end, an adjusting bar slidably attached through the first push rail end to the push rail and slidable in the track formed by the top and bottom grooves, the adjusting bar having a first end which is slidable in the track and a door-attaching end which extends away from the end of the push rail, the adjusting bar further having a Z-shaped bend formed in the door-attaching end for providing a desirable offset of the push rail from the door and for enhancing the inherent resilience of the adjusting bar, the door-attaching end of the adjusting bar being attached to a solid part of the door at the hinge side of the door opposite the handle and at substantially the same level as the handle, and a U-shaped hook slidable in the track of the push rail and operative to connect t

Abstract: A cylindrical branch connection fitting has an end adapted to be welded to a main pipe adjacent an opening therein with a pair of opposed ears and a pair of opposed crotches and a weld bevel extending outwardly from the inner edge of said end. A transition bevel extends from the center of each ear towards the centers of the crotches.

Abstract: A hanging file support frame has a pair of file folder support rails and four corner fittings mounted on legs. Each corner fitting has a bottom wall, a rear wall and a flexible top wall forming a first opening for the reception of one end of a rail. The top and bottom walls form a front entry into the first opening for the passage of said one end of a rail into said first opening in a direction transverse to the length of the rail. The rear wall is substantially thicker than the top wall and the top wall is cantilevered from the rear portion of the rear wall. Flanges releasably lock the rail end into the first opening. A transverse member having hollow ends has one end passing through a second opening in the rear wall.

Abstract: A system for heating a furnace having a heating chamber defined by furnace walls is provided with a plurality of individual burner assemblies mounted on a furnace wall to direct heating gas streams into the heating chamber, each of the burner assemblies including a diffusion chamber, a burner arranged to direct products of combustion through the diffusion chamber into a furnace heating chamber and means for directing the flow of diffusion gases into the diffusion chamber to admix with the burner products of combustion so that the gas stream entering the furnace heating chamber has a greater mass velocity than the burner products of combustion, there being provided a diffusion gas supply means connected to the heating chamber of the furnace for delivering hot gases from the furnace heating chamber to the diffusion chambers of each of the burner assemblies.

Abstract: A tank heater for a storage tank is provided with a fuel fired burner assembly, a heat transfer tube extending from the burner assembly a substantial longitudinal extent within the storage tank for the transfer of heat to the contents of the storage tank and a combustion chamber within the heat transfer tube adjacent the burner assembly, the combustion chamber being constructed in the form of a plurality of concentric tubes in a configuration to control the rate of heat dissipation.

Abstract: Hologram apparatus for testing for defects in welds has a frame with means for supporting the frame. A laser beam is directed towards one end of the frame where it is reflected by a rotatable mirror onto an area of the weld lying in a predetermined direction within an arc of about 90.degree. extending from a point directly below the mirror. A head is mounted for rotation on said one end of the frame coaxially with the mirror. A photosensitive recording medium is mounted on the head for receiving laser light reflected from said weld. A reference beam mirror is mounted on the head for reflecting laser light from the rotatable mirror to the recording medium as a reference beam. The rotatable mirror and the head are interconnected to cause the ratio of the angular movement of the head to the angular movement of the rotatable mirror to be two to one.