Abstract: A process for producing live, non-pathogenic, vaccines for the pathogens RNA turmor virus utilizes gene-altering technology to produce an altered genome which codes for the antigenic determinants of a pathogen, but has no genes coding for pathogenicity. The vaccine is the phenotypic expression of the altered genome. Specifically, an avian RNA tumor virus env gene is cloned into the non-pathogenic RNA virus RAV-O and the resulting recombinant product is replicated in host cells to provide a recombinant vaccine for the pathogen avian RNA tumor virus.

Abstract: The unbalance of a body (10) to be balanced is indicated in a polar co-ordinate system (52) on a screen (50) of a cathode ray tube (48) by means of a first visible mark (60). The body (10) to be balanced may be rotated by a drive motor (20) by means of a belt (22). A pulse generator (30), producing trains of pulses that are relatively phase displaced by a quarter of a period, is coupled to the drive motor (20). A computer (34) generates a position-indicating signal from the pulse trains, and a reference signal is produced by a reference mark on the body (10) to be balanced and obtained from a pick-up device (28). A position-indicating radial finger (68), which is a second visible mark and rotates on the screen (50) in phase locked manner with the body (10) to be balanced, is obtained from the position-indicating signal. When the position-indicating radial finger (68) coincides with the first visible mark (60), the unbalanced body (10) is positioned in the desired working position.

Abstract: An enclosed gas fireplace which efficiently transfers heat from a combustion chamber to surrounding air chambers and to air flow conduits which pass through a flue gas offtake. The fireplace has an outer shell that remains relatively cool, so that the fireplace can be installed in a framed sheetrock or wood enclosure without the need for utilizing the special masonry work or masonry chimney normally required for a fireplace. In addition, the invention provides a special burner arrangement to enhance the aesthetic quality of the fire and which provides a clean-burning gas flame to meet modern emission standards.

Abstract: A rainfall detector for detecting a set amount of rainfall and which functions to interrupt the normal operation of an automatic sprinkler or irrigation system upon detection of the set amount of rainfall, includes a rainwater-collection tray having an opening and mounted so that the portion of the opening exposed to rainwater during a rainstorm is adjustable. The rainwater-collection tray may be slidably mounted below a detector housing which houses a switching circuit with two sensors extending into the tray, and which serves to block the rain from the open portion of the tray beneath the housing. Thus, the portion of the tray opening exposed to rain is adjusted by sliding the tray so that more or less of the opening is covered by the housing. The tray may also include posts extending upwardly from the bottom of the tray and terminating below the top edge of the tray for preventing debris from filling the rain-collecting portion of the tray.

Abstract: In the field of staining methods for histology and cytology specimens, the improvements of the invention are three-fold. First included is a drying-clearing step whereby a specimen is cleared by drying. Thus, the use of hazardous chemical-clearing agents to remove washing-dehydrating solution prior to cover-slipping is eliminated. Second, in a staining method using spray staining equipment, the use of a low molarity, combination, bluing-washing solution which serves the dual purpose of a washing solution and a bluing reagent, eliminates the use of water in a staining procedure. Third, and also in a staining method using spray staining equipment, the use of a series of sprays of fresh, essentially anhydrous, washing-dehydrating solution to dehydrate a specimen replaces immersion in a series of washing-dehydrating solutions and thereby decreases the amount of chemical consumed and also avoids contamination of the reagent with water and specimen debris.

Abstract: A battery cable terminal for electrical connection with a terminal post of an electrical storage battery has an internally threaded, apertured platform electrically attached to and overlying a ring of preferably usual clamping formation so that a screw received by the aperture can be turned to bear against the exposed face of a battery terminal to which the ring is attached. The screw is provided with a cutting face at its terminal end for cutting into the exposed face of the battery terminal and making fresh electrical contact surface when turned to re-establish electrical contact between cable terminal and battery terminal.

Abstract: Stain-loaded seals and stain-free seals for packaged documents bear matching, identifying numbers or like symbols on their upper surfaces, respective coatings of adhesive on their lower surfaces, and respective peelable sheets of backing material covering their adhesive layer. The stainloaded seal bears one or more frangible containers of staining material which is released if there is an attempt to remove the seal after the seal is adhered to a substrate. The stainfree seal is adhered to an envelope or package as a seal so that any attempt to open the package or envelope will result in tearing of the seal and thereby evidence that the package or envelope has been opened.

Abstract: An apparatus for reducing extra large vehicle tires to particles or to prepare them for recapping comprises a tire holder assembly, made up of a set of dual jacks, in combination with a rotary cutter blade assembly made up of a side-by-side series of discs carrying cutter blades of chisel type. The set of dual jacks are preferably carried by an arbor having opposite shaft ends adapted to matingly interconnect with corresponding ends of a motivating shaft for quick and easy interchange of one size tire holder assembly for another size. When the tire is to be recapped, arcuate attachments are secured to members of the tire holder assembly that contact a tire bead so as to preserve the circumferential integrity of such bead during cutting, and the cutter blade assembly is replaced by wire buffing brushes following removal of the tread portion of the tire by cutting.

Abstract: A device for slowing the burning and smoke output of a resting cigarette between drags thereon by a smoker includes a base with an inclined or sloped open channel therein shaped to closely receive and cradle the burning end of a cigarette around about one-half the circumference of the cigarette. The cigarette is held in a sloped condition with the burning end downwardly. A passage extending along the length of the channel serves to provide air to the cigarette in addition to the air provided by the open side of the channel. The passage is dimensioned to provide a controlled amount of air to the cigarette and the dimensions of the passage may vary along its length to vary the amount of air supplied to the burning end of the cigarette depending upon its position in the channel.

Abstract: The invention relates to a gauge or set of gauges for determining whether the bend angle, bend diameter, and end extension dimensions of a bent steel reinforcing bar used in structural concrete construction are within established allowable limits. The gauge comprises at least the outer marginal portion of a section of a circular disc, the disc having an outer perimeter which defines a diameter approximating the minimum bend diameter for a particular bar size and bar bend, the perimeter taking into account the deformations on said bar and indicating the starting and ending points of the bend, i.e., the points of tangency. Also included are methods of using such a gauge to determine whether a bar bend has less than the minimum bend angle and diameter and whether the end extension of such bend is less than the minimum allowable length.

Abstract: Sport simulation equipment, such as a equipment for simulating a game of golf, and made up of a plurality of components, each component adapted to carry out a function of the system in coordination with other components, and a control circuit for directing and coordinating operation of the system components, incorporates a communication system whereby each component may be connected to a transmission line and can send and receive information regarding coordination and operation of components. Each component includes a communication interface circuit which is connected between the component and the transmission line to send and receive information via the transmission line. The control circuit include a similar communication interface means connected to the transmission line. In a preferred embodiment of the invention, communication is initiated by a request in a predefined format addressed to a component to which the component responds in a predefined format.

Abstract: A snow tilling implement when mounted on a snowmobile and in operating position with the snowmobile in motion digs into the snow and sprays broken up snow on the heat exchanger, track, and slide rail on the underneath side of the snowmobile to cool and lubricate the same. The tilling implement can be simply an elongate rod, the proximal portion of which is advantageously bent to form a coil spring and catch arm. The catch arm abuts against the snowmobile and causes the coil spring to provide a downward force pressing the distal end of the rod into snow.

Abstract: A removable liner for lining a forehead-contacting portion of a headgear of a protective head covering such as a hard hat includes a piece of material configured with a bottom edge, side edges extending outwardly and upwardly from the bottom edge to a top edge, and a top edge with top edge end portions sloping upwardly to a central top edge portion. Fastening means, such as snaps, are provided at the ends of and intermediate the top edge of the liner with respective mating fastening means at the ends of and intermediate the bottom edge so that the liner can be folded around the forehead-contacting strap and flap and the fastening means fastened to hold the liner in position. The fastening means along the bottom edge of the liner are all offset inwardly or toward one another from their respective mating fastening means along the top edge so as to provide a good fit around the strap and flap with a minimum of bunching and wrinkling.

Abstract: Cytocentrifugation apparatus is improved by providing centrifuging devices with a plurality of liquid-receiving chambers arranged serially along and opening into an elongate conduit leading to and terminating within a filter-pad-holder so that a filter-pad-prewetting liquid can be passed along such conduit and into a liquid-flow opening of a filter pad held by such holder in advance of passage along said conduit and through such liquid-flow opening in the filter pad of a cell-carrying liquid sample during a centrifugation run of the apparatus. Retention of prewetting liquid in the filter pad around the sample liquid flow helps to prevent loss of cells to the filter pad. Various other structural modifications of the cytocentrifugation device and filter pads used therewith also help to prevent loss of cells to the filter pad.

Abstract: An elongate carrying case, as for a pair of sunglasses, has a pocket panel extending transversely across one of its broad panel walls and secured thereto transversely to provide a side opening for the pocket so-formed externally of such case, into which pocket is placed one leg of a clip-on device having a gripping loop member and a pair of legs extending from such gripping loop member. The pocket panel is interposed between the leg members, which are pressed together about the interposed pocket panel, preferably by screws, to clamp the clip-on device to an operating cable or other part of a riding vehicle and to hold the carrying case and any thereby carried item in place for ready access by the rider while riding. The inner surface of the loop member is preferably serrated to permit easy enlargement of such loop member by filing if and when desired.

Abstract: Adapter pipe fittings for sprinkler or drip-type irrigation systems are improved by providing take-off fittings that snap into offtake connector members of the pipe body of such an adapter pipe fitting and swivels therein. The offtake portion of such a take-off swivel fitting preferably includes a screw threaded tip backed by a barb for enhancing holding of attached offtake tubing during the swivel action and for enabling selected take-off swivel fittings in manifold type units to be closed off by screwing plugs onto the threaded terminal ends thereof.

Abstract: A urethral inserted applicator for prostate hyperthermia includes a multi-tube, balloon type catheter. The catheter includes first and second closed end fluid dry tubes, respectively, for a helical coil electrode type applicator, and an electromagnetic field compatible temperature sensor for measuring the temperature of the prostate tissue, and an open fluid receiving tube enabling urine drainage from the bladder. A radiofrequency source supplies electromagnetic energy to the applicator. A control unit contains a comparator which is connected to the temperature sensor and a temperature reference device for comparing the actual tissue temperature level with a desired temperature level and output control signals to the radiofrequency generator for controlling the output to the applicator. The coil type applicator is an elongated coil connected to the center conductor of a coaxial cable.

Abstract: The invention is a weather resistant container in the nature of a box with tightly fitting cover for a timer unit controlling operation of an irrigation system and associated transformer and electrical plug. The container also houses an electrical receptacle and wiring. Such container is adapted to receive electrical power from an outside source through conventional electrical conduit. Within the box are provided supports for a removable, broad partition wall defining a relatively shallow wiring compartment between the back wall and the partition wall and a relatively deep compartment between the partition wall and open front of the box for housing the timer components.