Abstract: In a transmitter and receiver system, a frequency converter doubles as a transmitter local oscillator, a receiver local oscillator, and a transmitter frequency converter.The present local oscillator is a semi-conductor oscillator such as a gunn diode or IMPAT diode, the DC power supply of which is converted to an intermediate frequency signal. The oscillator is stabilized by self injection locking by a cavity resonator connected to the output of the diode, thus the oscillating frequency is very stable. Some of the output power of the oscillator is separated for the receiving local oscillator through an isolator and an attenuator. The intermediate frequencies of a transmitter and receiver have a predetermined relationship.

Abstract: An improved method for the production of castings by the anionic polymerization of lactams, particularly lauric lactam, in which two melts prepared separately, one with a catalyst and one with an activator, are polymerized together in a mold heated to substantially the same temperature as the melts, is described, the improvement comprising the application of a vacuum in the range from about 80 to 450 Torr, said vacuum being selected in accordance with the formula S.times. T= K where S is the surface area of the casting exposed to the vacuum, V is the volume thereof, T is the vacuum application time and is less than the polymerization time and K is a constant. Said vacuum is replaced by ambient pressure either progressively or instantaneously when the polymerization mixture reaches a highly viscous non-stirrable state. Thereafter, the polymer may be heat treated at a temperature about 10.degree. to 20.degree. C.

Abstract: A curd mixer for making cottage cheese, comprising a horizontally arranged screw conveyor for feeding curds to a disk cutter for slicing the curds with the addition of hot water, a drop chamber adjacent to and beneath the disk cutter, permitting the sliced curds to drop onto the inlet end of a pair of juxtaposed horizontal screw conveyors mounted for rotation in opposite directions for feeding the sliced curds and water to an oval inlet opening of an elongated mixing basin in which a pair of cooperating plunger arms each supporting a horizontal mixer comb is arranged to exert on the paste of curds and water a mixing action by moving the paste from the longitudinal outer sides of the basin to the center thereof and then upwardly. The mixed paste of curds leaves the mixing basin through an overflow spout for further treatment. Whey formed during mixing is drawn off from the mixing basin by a whey extraction pump.

Abstract: A single facer for manufacturing single-faced corrugated board having a first corrugating roll and a second corrugating roll meshing with the first corrugating roll to form a nip for receiving a sheet medium to corrugate the same, the second corrugating roll being provided with radial conduits extending toward its periphery through which suction is applied for attracting and holding the corrugated medium onto the peripheral surface thereof. The outer ends of the conduits terminate in the bottoms of axially spaced circumferential grooves formed around the periphery of the second corrugating roll. Finger-like plates engage within the circumferential grooves to seal at least some of the conduits disposed in the portion of the second corrugating roll which is not lapped by the corrugated medium.

Abstract: A stable, multi-component footer is provided for supporting markers, memorials, gravestones and/or monuments in cemeteries and the like. The footer forms a hollow, generally rectangular structure for installation within a grave. It includes a pair of integral vertical side members which are spaced apart sufficiently to accommodate a casket therebetween. An upper horizontal support member extends between and is connected to the upper ends of the two side members, to provide a support plate for the monument. When the footer is assembled, its components are secured detachably by locking means comprising engageable complementary male and female elements. The locking means provides stability to the assembled footer, as well as ease of assembly. In its preferred form, the footer comprises two separate, complemental, interchangeable L-shaped components, one component being in the form of an inverted L and the other being in the form of an upright L.

Abstract: The invention relates to a seat having a seat portion that is subdivided by slots to provide resilient individual supporting elements, and wherein the seat portion has a width which exceeds the span of the support for the seat portion.The seat thereby provides a maximum sitting comfort by the superior elasticity of its seat portion, the elasticity extending even into the support for the seat portion.

Abstract: A fuel transport land vehicle formed by a tractor and a trailer carrying fuel in which the tractor has a plurality of axles all of which are steerable. The tractor and trailer are detachably coupled so that they remain along the same general longitudinal axis and sideways relative motion between the tractor and trailer is prevented. A pumping module is removably coupled to the vehicle and has disposed therein means for pumping, filtering and modulating the flow of fuel from the trailer.

Abstract: A treating chamber operable as an electrolytic cell is provided, in which the electrodes have large surface areas relative to the volume of the electrolyte. The anode is composed of a quantity of aluminum particles and the cathode is composed of a quantity of iron particles disposed in close proximity to the aluminum. Waste water containing inpurities is introduced into the treating chamber and utilized as the electrolyte. An electric current is applied to the electrodes to dissolve aluminum and iron, and produce floc in the treating chamber. The impurities in the water are adsorbed and retained by the floc. The waste water may be continuously recirculated from the treating chamber to a holding chamber, or may be moved across the aluminum and iron electrodes in a continuous flow-through system at a predetermined flow rate. The floc containing the adsorbed impurities is separated from the water by conventional means.

Abstract: A toy figurine having movable leg limbs actuated by two actuating rods connected to each respective leg limbs. The rods having an aperture at one end and a finger receiving cavity at the other end. A cross-bar pivotably connecting the rods about the mid-section. A pair of fasteners each having a shaft and an upper and lower disc-shaped head portion, enlarged with respect to the shaft, at each distal end of the shaft. The rods are rotatably mounted on a respective shaft by each aperture. A pair of pins are provided on each of the upper head portions for mounting each fastener to a respective leg limb of the figurine.

Abstract: A multiweapon security rack having a plurality of adjustably positioned butt housings each for receiving a butt portion of an individual weapon. A bar enclosure housing is displaced from the butt housings and has a plurality of passages each for receiving a barrel section (which includes a shell tube, if applicable) of an individual one of the weapons. A securing assembly is manually operable for simultaneously blocking all of the passages thereby to capture and lock each of the barrel sections between a respective passage and the securing assembly.

Abstract: A rotary engine having a power output shaft, a drive unit for rotating the shaft, the drive unit including a rotary drive element affixed to the shaft, and a stationary element for supporting the shaft rotatably. A pair of diametrically spaced, rotatable, paddle-like pistons are mounted on the rotary drive element. The paddle-like pistons rotate into and out of opposing, complementary cavities formed in the rotary drive element and in the stationary element. The complemental cavities function as revolving cylinders or chambers for the reception of a high pressure, expansible fluid. The expansible fluid drives the pistons to impart rotation to the rotary element, to drive the power output shaft. A source of high pressure expansible fluid is provided, together with a valve system connecting the fluid source to the drive unit. The valve system is automatically operative to discharge the fluid under high pressure into the drive unit chambers at periodic intervals.

Abstract: Automated machine for the continuous bias cutting of an elongated tube of material, such as tubular knitted fabric, into a plurality of individual strips, and winding the strips into a plurality of rolls. The tubular material is advanced axially at a uniform rate from a supply to a cutting and rolling section by a plurality of skewable rotatable cylinders acting as a positive feeding means. As the tubular material is withdrawn from the supply, it passes over a spreader which opens and tensions it. The skewed cylinders cause the tube to rotate about its axis as it advances. Control means are utilized to adjust automatically the skew angles of the cylinders, to increase or decrease the rate of advance of the tube, to compensate for variations inherent in the material which affect its rate of feed. Control means also are utilized to adjust automatically the tension exerted by the spreader, to correlate such tension with the rate of advance as determined by the skew angles of the cylinders.

Abstract: Punching press having a top cutter which is vertically movable by an axially guided ram. The top cutter extends beyond the cross-sectional surface area of the ram and cooperates with a bottom cutter mounted on the machine table. The ram is constructed as an angle section, particularly as an equal-limbed L-section, at least on the place of mounting for the top cutter and at least over an axial length corresponding to the length of stroke of the top cutter. The axial guiding system for the ram comprising a pin-and-bush guide which is disposed on the cutting clearance and comprising at least two pins and associated guide bushes situated at a distance from each other on the ram and on the machine frame in an axially parallel configuration.

Abstract: A correlated set of golf clubs in which each of the clubs in the set are dynamically correlated so that each club is matched in accordance with at least one dynamic criteria. Further, each club of the set is statically correlated as a function of the correlated dynamic criteria so that each of the clubs in the set is also matched in accordance with at least one static criteria. In this way, each club exhibits substantially the same static and dynamic force characteristics throughout an entire golf swing.

Abstract: A computer system having a "program call instruction" which enables the use of a common program in a plurality of main program systems. The program call instruction has a pair of address parts (A) and (B), the first address part (A) is transferred to the program counter which indicates the current excuted program address and the second address part is transferred to the second push down stack. Before excuting the program call instruction the content of the program counter is transferred to the first push down stack. In excuting the common program, the content of the program counter and the output of the second push down stack are compared and when they coincide the output of the first push down stack is transferred to the program counter to return to a main program.

Abstract: A feathering valve system for modulating the fluid inflow to a selected one of first and second spool ends of a spool valve assembly. A controller is electrically coupled to first and second solenoid operated pilot valve assemblies for selectively (1) maintaining the pilot valve assemblies in a valve closed state without bleed flow through the pilot orifices or (2) supplying a predetermined value electrical signal to either, but not both, of the valve assemblies for actuating one of the assemblies to an open position related to the value of the signal. Fluid under a substantially constant pilot pressure is applied under the poppets of both valve assemblies. Fluid flow is taken from above the poppet of an actuated valve assembly to a respective spool end whereby the spool moves to a position which is a function of the actuating signal value.

Abstract: A D.D.A. (Digital Differential Analyzer) for pulse interpolation having a memory counter with more than two bit positions for counting the number (m) of input instruction pulses in each interpolation cycle, a second counter for receiving the content of the memory counter, and an auxiliary adder for obtaining m multiple of the content of the integrand register in the D.D.A. system. The output of the auxiliary adder instead of the output of the integrand register is applied to an interpolation adder. Thus, the pulse interpolator can operate correctly even when more than two input instruction pulses are generated within a single interpolation cycle.

Abstract: A CMOS bistable semiconductor flip-flop circuit having a storage element formed by a first and a second inverter. The output of the second inverter is directly connected to the input of the first inverter. The first inverter output is coupled to the second inverter input through a high resistance feedback of resistance value which is substantially high with respect to the low output impedance of the first inverter. A charge storage device and gates alternately store the state of the storage element and thereafter provide the stored signal to the second inverter input. Additionally, a device is connected to the input of the second inverter to provide a reset or set function.

Abstract: A lock assembly having a lock housing which is secured to a first member such as a lid or door of a locker or other container. The lock housing includes a bar lock accessible at a first end portion, a second end portion, a continuous top portion and a continuous first side portion. The bottom portion is provided with an opening into which a strike may be introduced for engagement by the bar lock and the lock housing covers and conceals the strike. The strike is adjustably and releasably secured to the locker so that the mutual positional relation between the strike and the lock housing may be altered.

Abstract: An improved waste material incineration system and method of combustion where waste material is initially inserted through gravity assist into the combustion zone of a horizontally directed furnace. The waste material is impinged by the flame front of a burner and is cyclically vortexed in a vortexing zone of the combustion chamber through a combination of air inlet conduits impinging on the combusting waste material and the particular contouring of the furnace internal geometry. The waste material is initially densified in one section of the vortexing zone and then expanded in a second section of the vortexing zone while being impinged by inlet air to provide a guide to maintain the vortexing contour of the combusting waste material.