Abstract: The disclosure relates to a four-way valve, incorporating a fail-safe pivotal valve stem, a finger knob indicating simultaneously both closed and opened ports, and three connector fittings oriented in a Y configuration about the centrally located valve stem body for connection with various types of tubing or catheters. A number of channels bored into the valve stem are oriented to connect various ports within the valve housing in a number of combinations depending on the valve stem position. Detent means are provided to lock the valve stem in a selected position and prevent inadvertent opening or closing of a selected port or ports.

Abstract: A pipeline inspection vehicle has at least one resilient driving cup mounted around the body of the vehicle so as to contact the interior wall of the vehicle and thus provide a pressure differential across the driving cup which will propel the vehicle along the pipeline. An annular array of ducts extends through the body of the vehicle to by-pass fluid through the driving cup, each duct being provided with a control valve for regulating the flow of fluid through the duct. A control arrangement is provided for opening and closing the control valves in dependence on the speed of the vehicle, thereby to adjust the speed of the vehicle in accordance with a desired speed.

Abstract: An improved tractor pulled earth mover is shown. The improved earth mover is a two-bladed earth scraper having two parallel blades mounted between two supporting side plates. The side plates define a level of ground with respect to which the earth grader is dragged. The side plates have a supporting structure including a mounting for a standard three point hitch for a tractor to permit manipulation, application, dragging and removal of the earth grader. Between the two side plates are located two parallel rigidly mounted blades having three settable depths found specifically advantageous for grading respectively loose sand, coarse aggregates such as rocks, and compacted dirt. The invention discloses a particularly advantageous geometric relationship between the blades and among the blades for optimum grading effectiveness.

Abstract: A method of making a seat for a recreational swing set. A band of flexible material is flexed along a length thereof into a bowed orientation. At least one strand of flexible material is positioned along the length of this bowed band, and the ends of the strand are secured to the bowed band. The bowed band with the strands secured thereto is then allowed to flex back to its normal unflexed condition, placing the strand in tension and causing it to lie along the length of the band. The band with the strand secured thereto is then embedded in a body of flexible material.

Abstract: Carbon-metal catalysts having a substantial amount of catalytically active metal, e.g. silver, deposited thereon in zero-valent, small cluster form, are prepared by vaporizing the metal under low vapor pressure conditions in the vicinity of an organic liquid solvent e.g. tetrahydrofuran, such that the metal dissolves in the solvent as a labile solvated zero-valent metal complex. This complex is contacted with the carbon so that the complex diffuses onto the surface of the carbon and also into the pores thereof.

Abstract: A treatment of cancer by the application of chemical reactions intracellularly capable of the intracellular generation of heat so as to induce selective thermal death of cancer cells in living tissue. Metabolizable minute particles of a size less than one micron are intravenously injected into the patient and absorbed by the cancer cells. The oxygen level of the patient's blood is then increased. The rate of intracellular chemical reaction in the cancer cells due at least in part to the intracellular presence of these minute particles is thereby increased and intracellular heat generated. The oxygen level is increased until the intracellular temperature has increased at least 8.0 degrees Centigrade but not more than 9.5 degrees Centigrade thereby selectively killing the cancer cells without damaging the normal cells.

Abstract: A vehicle generally consisting of a body of monocoque construction, front and rear axle assemblies provided with brakes, wheels and tires, suspension systems mounted on the axle assemblies for supporting the body on the axle assemblies, a steering system, an engine mounted in the body between the axle assemblies and adjacent both a side of the body and the rear axle assembly, a transmission mounted on the body rearwardly of the engine, a chain assembly for transmitting drive from the transmission downwardly and laterally, means for transmitting drive from a lower end of the chain assembly forwardly to the rear axle assembly, a cooling system for the engine mounted in the body and control means mounted on the body for operating the engine and transmission.

Abstract: An electronically controlled internal combustion engine provided with an accelerator position sensor wherein, in order to positively prevent violent running and make some degree of running possible, an idling switch, intermediate switch and fully opening switch issuing signals when a wiper crosses them are provided within the accelerator position sensor, in case the magnitude of the output from the accelerator position sensor when any of the above mentioned respective switches issues signal during the operation of the accelerator position sensor is not in a normal range memorized in advance, the accelerator position sensor will be judged to fail and, when the accelerator position sensor is judged to fail, signals from the accelerator position sensor will not be accepted, a desirable running state will be judged on the basis of a combination of the signals from the respective switched and an injector will be controlled.

Abstract: In a tufting needle with an eye (7) elongate in the direction of the needle axis (8), one side face is bevelled at one longitudinal edge by a land (6) and at the other longitudinal edge by a bias grind (14) reaching into the zone of the eye. The uppermost zone of that edge (9) of the eye, which zone is furthest from the needle point (13), is offset towards the land (6) relatively to the central axis (8) of the eye (7) to facilitate trouble-free co-operation between the looper (2) on the one hand and the needle and yarn (5) on the other hand.

Abstract: An ultralightweight aircraft including a principal longitudinally disposed load-carrying member and a wing structure supported by the load-carrying member and positioned in a horizontal plane spaced a distance below or above the horizontal plane of the load-carrying member. A housing is attached to and depends from the load-carrying member, an operator's station is disposed within the housing, the wing structure is attached to the housing and a landing gear system connected to a lower surface of the housing. A rudder and elevator assembly is mounted on the load-carrying member aft of the wing structure. A propeller is mounted on the load-carrying member between the wing structure and the rudder and elevator assembly for rotation about a longitudinal centerline of the load-carrying member. An engine is directly mounted on the load-carrying member, and a belt system drivingly connects the output of the engine to the propeller.

Abstract: In an axially compressible lap carrier for taking up threads or yarns with parallel running elements (3, 10, 13), the latter are provided with axially protruding bulges (4, 14). When this lap carrier is in the compressed state, the bulges (4, 14) of adjoining ring elements (3, 10, 13) engage in each other. In the area of these bulges (4, 14) tie bars (7) are provided between the adjoining ring elements (3, 10, 13). These tie bars (7) are flexible and their outer edges are displaced radially inwards with respect to the winding surface (FIG. 1).

Abstract: A surgical instrument for performing gynecological procedures comprising a first forceps lever having a forwardly disposed section insertable into a vaginal cavity, an intermediate section and a rearwardly disposed handle section, a second forceps lever having a forwardly disposed section insertable into a vaginal cavity with the insertable section of the first forceps lever, an intermediate section pivotally connected to the intermediate section of the first forceps lever and a rearwardly disposed handle section cooperable with a handle section of the first forceps lever, the insertable section of the first forceps lever having a longitudinally disposed bore, a plunger member disposed in the longitudinally disposed bore and displaceable longitudinally therein, such plunger member being insertable in the uterine canal when the insertable sections of the forceps levers are inserted into a vaginal cavity, flexible material disposed on the plunger member and expandable to engage the wall of the uterine cavity an