Abstract: A calculating device is provided to aid in predicting the periods of fertility and non-fertility during a menstrual cycle of a user. The device includes a first disc having indicia thereon representing the calender days of the present month and the next month, a second disc having indicia thereon indicating the length of and the days in a normal menstrual cycle of the user, and a base plate having markers thereon which, when placed in proper registry with the indicia on the two discs, indicate which calendar days during the present menstrual cycle the user is fertile. In a second embodiment an additional disc is provided for indicating days in the shortest period of a user who has irregular menstrual cycles. This additional disc, when placed in registry with the other discs, indicates an expanded period of fertility for the user.

Abstract: The administration internally to humans of 1-(B-hydroxethyl)-2-methyl-5-nitromidazole, (metronidazole) in a dosage range for adult humans of about 31 to 2,500 mgs per twenty-four hour period, is an effective therapeutic treatment for certain viral infections causing diverse symptoms both acute and chronic. Corresponding dosage proportional to body weight appears effective in other mammals also.

Abstract: A treadmill exercising device comprises a rigid frame having spaced first and second side members and front and rear end members with a plurality of rollers positioned laterally across the frame. The rollers are rotatably supported in plate members affixed to the side members and have opposite end portions, one of which has an end cap so as to provide a longitudinally extending series of end caps. An endless belt extends longitudinally of the frame along the first side member in contact with the series of end caps in driving engagement whereby rotation of several of the rollers rotatably drives other of the rollers in unison therewith. A braking carriage is slidably mounted to the first side member and has a plurality of grooved wheels rotatably mounted therein. The braking carriage is positioned adjacent the aligned roller end caps and the grooved wheels engage the belt.

Abstract: A battery protection circuit particularly for portable lamps employing rechargeable batteries is provided to prevent overdischarge of the batteries and includes a bulb drive transistor connecting a bulb across the battery with a switch interposed between one side of the battery and the bulb, a voltage sensing resistor connected to one side of the switch, a regenerative switch connected between the sensing resistor and the other side of the battery, and the regenerative switch including an output terminal connected by a base resistor to the base of the drive transistor. The regenerative switch includes a pair of transistors connected and cooperating such that when one of the transistors is turned on, the other is caused to be turned on, the transistors, further, maintaining each other on. As the dropout voltage of the battery is approached, the base drive of the drive transistor decreases which causes the bulb to become dim to thereby warn of the discharged state of the battery.

Abstract: A monitor system for sensing the failure of a rupture disc and activating an alarm in response to such a failure. The system also senses potential failure of a rupture disc. The system includes a failsafe signal carrying loop which is broken when the rupture disc fails, thereby interrupting the signal. The system also includes a signal sensor which recognizes a signal interruption or substantial modification in the signal and initiates and cooperates with an alarm device to provide notice to an operator or a safety device that the rupture disc has failed.

Abstract: A game for a plurality of players wherein each player is provided with a playing card that is common to all, said playing card being presented to the players by means of a mass distribution publication. The playing card comprises a matrix of delineated areas, such a squares, in rows and columns, each square bearing a certain indicia which is to be matched with a corresponding indicia found in a plurality of promotional coupons present in the same publication. The player matches such indicia and continues to do so until he has satisfied any one of several particular combinations of matched indicia. The player also may be any one of several required to ascertain the correct total number of coupons having appropriate indicia that appear in the publication in order to win the game or become eligible to progress toward winning a prize.

Abstract: A process is provided for removing suspended solids from a waste water stream exiting from a wet rendering plant, a centrifugal rendering plant and/or a hide curing brine system before the stream enters a public sewer system. Such waste water typically has some oils, fats and/or protein particles in addition to easily settled solids previously removed therefrom. The waste water is delivered to a holding tank wherefrom the waste water is drawn and pH adjusted with sodium carbonate, sodium hydroxide, or the like. Air is injected into the pH adjusted waste water along with flocculating agent such as ferric sulfate. Thereafter, the waste water is injected at a relatively low velocity into a flotation tank wherein flocculated wet solids urged upwardly by the injected air are allowed to float to the top of the tank and water which is relatively low in suspended solids and biological oxygen demand is removed from the lower portion of the tank and is pH adjusted and sent to a sewer.

Abstract: A wire spoke, non-suspension type, automotive wheel is provided in which spokes are operably untensioned prior to vehicle loads being placed upon the wheel. An outer tubeless tire rim with a drop center is mounted to a wheel center. The wheel center includes a substantially thick and solid felly connected to a concentrically positioned hub. Wire spokes extend radially outward from the hub in a patterned circumferential array and have tenons or feet on inner ends thereof which are anchored within recesses at front and rear ends of the hub. Radially disposed outer ends of the spokes have plain terminations which are welded to form a plug anchor within circumferentially spaced bores in the felly to secure the spokes. The bores are preferably situated in inwardly extending dimples which are formed in the felly. The bores are partially frusto-conically shaped and are formed by a method using a circular punch and corresponding die.

Abstract: A process is provided for burning refuse containing polyvinyl chloride without the consequent production of phosgene. The refuse is carbonized in a rotary furnace at temperatures below 1200.degree. F., especially 700.degree. F., in an oxygen deficient atmosphere. A burnable gas containing the carbonized refuse is drawn from the furnace by an air jet wherein same is mixed with oxygen and selectively combusted. Uncarbonized refuse is collected and withdrawn after exiting the furnace. An apparatus is provided for combustion of the refuse in the nonphosgene generating process and includes the rotary furnace. Special seals are provided for the furnace to prevent excess oxygen from entering thereinto. In particular, the seals are utilized between the rotary ends of the furnace and stationary head associated with each end respectively.

Abstract: An apparatus for detecting the alignment of the wheels of vehicles such as automobiles, truck tractors and trailers, includes an adjustable, wheel-engaging and target supporting structure mountable upon a vehicle wheel rim and has spaced arms extended laterally from cardinal points of the wheel. Indicia bearing targets respectively located on the arms provide scales for indicating the angular alignment of the vehicle wheels for conventional measurements such as caster, camber, toe-in, and steering axis cant. A sighting instrument establishes a line of sight parallel to and longitudinally spaced from the vehicle. The line of sight is directed toward a target and impinges upon a discrete mark on the scale thereof. Comparison of the points of impingement upon targets located at opposite cardinal points establishes angular relations therebetween which correspond to alignment measurements.

Abstract: A target structure for use with an alignment apparatus, such as a line of sight alignment apparatus for detecting the alignment of wheels of vehicles such as automobiles, truck tractors and trailers comprises an adjustable, wheel engaging and target supporting structure mountable upon a vehicle wheel rim. The target structure has an inner wheel mounting member with upper and lower arm members extending therefrom and engageable with the vehicle wheel rim. An outer target mounting member is pivotally connected to the inner wheel mounting member through coaxial center portions thereof for relative rotation of the outer target mounting member relative to the inner wheel mounting member. The outer target mounting member has spaced shaft members extended outwardly of the wheel and holding a plurality of targets at cardinal points around the wheel, the targets providing scales for determining the angular position of the vehicle wheels for conventional measurements such as caster, camber, toe and kingpin inclination.

Abstract: An outlet assembly for a vacuum cleaning system includes a face plate for mounting on the exterior surface of a building wall, an annular inlet bushing or socket open from the face plate and extending through the building wall and a back plate positioned adjacent the interior surface of the building wall and opposite the face plate and with the inlet bushing extending therethrough. The inlet bushing connects to a vacuum conduit from the vacuum cleaning system for flow of air therethrough. A seal fitting member is positioned generally between the building wall and the back plate and sleeved about the inlet bushing. A resilient seal therein engages the outer surface of the inlet bushing in air-tight relationship and a flange portion engages with the open end of the vacuum conduit and secures the vacuum conduit to the inlet bushing.

Abstract: A fishhook and worm lure combination wherein an eye of the fishhook is located adjacent a head portion of a plastic worm lure with the shank extending exteriorly of and adjacent to a body portion of the lure with a barbed point of the hook embedded into the body of the worm lure. The hook is connected to the worm lure by an anchor member pivotally connected to the fishhook as by interconnected eyes with the anchor having a rod portion extending into the worm lure from the head end thereof and having portions within the worm lure and engaging same to resist retraction therefrom. The eye of the hook is connected to a fishing line.

Abstract: A rack structure for use in a store for storage and display of samples of material such as of carpet, fabrics, and the like comprises opposite end members positioned in spaced, upright relationship for display of large samples, such as sample books thereon, and a plurality of supportive shelf members extending between and connected to the end members. The shelf members have midportions and front portions and a plurality of spaced divider wall members on each of the shelf members extend from the midportions to the front portions and divide each shelf member into a plurality of narrow, side-by-side trays. Front wall members respectively extend along the front portions to close the front of the trays. A plurality of sample pieces of material of relatively small size are received in the trays and removable therefrom for transport from the store whereby the pieces can be taken to a proposed installation site for examination.

Abstract: An alignment checking and measuring apparatus for vehicle frame and body portions includes two or more measurement scale carriers which have connectors on opposite end portions thereof for attachment transversely to the vehicle. One of the measurement scale carriers has targets movably mounted on the end portions and another of the measurement scale carriers has sighting instruments, such as laser beam emitting instruments, mounted on the end portions. The measurement scale carriers are longitudinally spaced from each other. Longitudinally aligning the sighting instruments with the targets facilitates determination and correction of any damaged or misalignment condition in the vehicle frame and body. Comparison is made of the deviation, if any, in the parallelism of the lines of sight created by the longitudinally aligned targets and sighting instruments. Angular deviation of the lines of sight to symmetrical points on the vehicle frame and body tends to indicate damage or misaligned conditions.

Abstract: A material engaging apparatus, such as a press brake or shear, has first and second jaw members pivotally mounted together and with coordinating material engaging and working members in the jaw members. An extensible ram positioned along and between the rear sides of the jaw members has one end pivotally mounted to the second jaw member and another end pivotally mounted to a rear end of a lever arm extending from front to rear and spaced adjacent the first jaw member. A front end of the lever arm is pivotally mounted to a front end of the first jaw member. A connecting link extending between the first and second jaw members has a first end pivotally mounted to the lever between the front and rear ends thereof and a second end pivotally mounted to the second jaw member. The connecting link acts as a movable fulcrum for the lever arm and is movable therewith to provide substantially constant leverage as the lever arm moves to urge the first and second jaw members together.

Abstract: A fuel heater is provided for internal combustion engines utilized on motorized vehicles and utilizing a fuel stored as a liquid. The fuel passes through a frusto-conically shaped coil within a heat exchanger wherein heat is transferred thereto from engine heated cooling fluid which enters the exchanger tangentially and exits axially therefrom. Flow of the fluid through the exchanger is controlled by the speed of the water pump and by an ambient temperature sensitive valve. Preferably, there is also a restriction device for the liquid which sets an initial temperature therein which temperature after setting is generally maintained by cooperation between the pump and the ambient temperature sensitive valve.

Abstract: A mounting apparatus for pivotally connecting a soil working tool to an agricultural tool bar. The mounting apparatus comprises a support bracket fastened to the tool bar by a U-bolt, a tool holding member which wraps around the tool and is pivotally connected at a medial point therealong to a lower end of the support bracket, and a biasing means connected to an upper end of the support bracket and pivotally attached by a connector member to the tool holder member at a position spaced from the connection of the support bracket and tool holder member. The support bracket is a one-piece channel shaped structure and comprises a web, side flanges, an upper connector lug for fastening same to the biasing means, pivotal means for allowing the tool holder member to rotate relative thereto, and stop means for limiting maximum rotation of the tool holder member.