Abstract: A transporting device for lifting and relocating material from one position to another. In one embodiment, the transporting device comprises a stationary central support pedestal and a rotatable turret situated at the top of the pedestal. The turret has at least a pair of arms which extend radially outwardly from the pedestal. Each arm has an adjustable lifting and stacking mechanism for gripping and transporting of material as the turret is rotated. In another embodiment, the transporting device comprises a rotatable central support turret situated on a stationary pedestal. A pair of arms extend radially outwardly from the turret. Each arm may be raised and lowered independently of the other and includes a mechanism for gripping material as the turret is rotated. In either embodiment, the turret is driven by a motor situated in the stationary pedestal.

Abstract: A cold applied joint sealant usable for both portland cement and asphaltic concrete pavements, which comprises an asphalt/urethane formulation resulting from the mixture of a liquid butadiene polymer, containing predominantly primary terminal hydroxyl groups, with a urethane reactant of di- or polyisocyanate. The sealant has low urethane content and cures to provide a low modulus, high penetration, with 85%-95% resilience and zero flow. An initial set time of less than about 120 minutes is achieved, which permits vehicular traffic to be accommodated thereover soon after application.

Abstract: A digital adder circuit for binary-coded-decimal operation, comprising a set of multiplexers (11) which are conditioned with a pattern of input bits causing them to form an intermediate result (IR) equal to the sum of the two operands (A0-A3, B0-B3) plus a correction value of six. The intermediate result is adjusted by subtracting the correction value if the intermediate result is less than sixteen. The circuit is also operable in a pure binary mode, or can be made to perform various logical operations.

Abstract: A concrete cure is provided which is totally water based and completely void of solvents. A moisture impermeable film is attained when the cure is applied to fresh concrete. The cure forms a barrier over the concrete allowing it to retain over 95% of the mixing water for a minimum of 72 hours when applied at the rate of 200 ft.sup.2 /gallon (5m.sup.2 /dm.sup.3). The concrete cure of the invention is a mixture of a hydrocarbon resin, emulsifying agents, paraffinic wax, and water. The cure may be provided in a clear or pigmented formulation. A method for making the concrete cure is also disclosed.

Abstract: A spheroidal projectile with an aerodynamically roughened surface in the nature of intersecting grooves which give a high density of roughness elements. The grooves range in size between grooves of about 0.01 inch wide and deep, spaced about 1/32 of an inch apart for a "fine" degree of roughness to grooves which are 1/16 of an inch wide and deep, and spaced 1/16 of an inch. The projectile has a mass sufficiently low so that when launched at transltional and rotational speeds obtainable by hand, Magnus forces are enhanced by the roughness, and anti-Magnus forces are made to appear by this appropriate degree of roughness, the result of which is a trajectory with pronounced multiple curves. In accordance with the preferred embodiment, a surface speed of rotation of 8 feet per second is desirable and a ball of 15 grams having a 3 inch diameter would have a spin of about 10 revolutions per second. An acceptable ballistic (or linear) launch speed for the ball is about 55 feet per second.

Abstract: An improved referencing device for identifying for future reference a portion of a data record as it is being recorded for use in combination with a shorthand machine generating electrical output signals corresponding to the keys depressed, a recording medium, and recorder associated with said shorthand machine for making a data record of the signals generated thereby on said recording medium. The referencing device comprises means for generating a reference signal separate and independent from the output signal generated by said shorthand machine and for inputting said reference signal to said data recorder for making a record of the referencing signal on the recording medium. A portion of the data record may then be identified for future reference by the reference signal record.

Abstract: A communicating network in which encoder/decoders are joined in a ring by transmission links. Data passes over the links as a carrier having two cycles per bit period. The amplitude of the carrier in any bit period is non-zero and represents the value of the bit. In each encoder/decoder the carrier is recovered by a tuned circuit, the clock is recovered by dividing the carrier and the data is recovered. The same carrier is remodulated with the output data. The whole system forms an oscillatory system which sustains the carrier at a frequency which varies if the properties of the ring change.The specification also describes the use of a modulated carrier in conjunction with a filter blocking frequencies below 25 MHz to give good noise immunity.

Abstract: A method or apparatus for facilitating the construction of prototype electronic circuits using printed circuit boards, by providing a printed circuit board 1, with a plurality of through connection bores 15 arranged in rows and columns, and with a conductive pad 4 at each end of each hole. A group of parallel conductive tracks 3 is provided on one face of the board substrate, the tracks 3 extending through the columns of pads 4, and a second group of conductive tracks 12 is provided on the other face of the board substrate, the tracks 12 being perpendicular to the tracks 3. The tracks 3 and 12 are connected to selected ones of the pads 4. In addition, conductive planes 5,9 are provided between the said first and second faces of the substrate, these planes being connected with selected ones of the plated through connections 15. Certain of the connections 15 are used for the purposes of mounting the connector pins of components.

Abstract: A parafoil for supporting a flying machine, which parafoil has a forwardly extending central section open at the front to scoop in air during flight, and wings attached to the rear of the central section and which receive air into the interior thereof either directly or from the central section, said wings being divided into compartments of equalized pressure, and restraining elements attached to the parafoil central section in front of the parafoil wings and to the outer ends of the parafoil wings, thereby in flight to hold down the front of the parafoil central section and hold down the parafoil wings in an inverted U-shape.

Abstract: An improved utensil for cutting pizza or the like is disclosed having a sharpened cutting wheel and a planar blade with a sharpened edge, the edges of both the wheel and blade are aligned so that the cutting paths traversed by each coincide. The pizza crust edges and the pizza body can then be cut respectively by the blade and cutter wheel in one cutting stroke across the pizza. The blade end further includes angled corners for completely separating the pizza at the pan corners. The planar blade is of sufficient width to hold a piece of pizza thereon for serving, and includes a serrated cutting edge to aid in inserting the blade between the pizza and the pan.

Abstract: A rolling mill roll having adjustable axial compliance is formed by a sleeve in the bore of which is located a stiffening arbor. The arbor is an interference fit with the bore of the sleeve over a limited central part of the roll but on each side of that central part is stepped in diameter to form, at each side, a divergent stepped space between arbor and sleeve. That space is occupied by a number of annular wedges which normally do not give support to the sleeve. At each end of the roll there is a hydraulic actuator which applies axial force to the wedges at that side and expand the wedges progressively against the sleeve. By varying the force applied by each actuator the number of wedges supporting the sleeve can be adjusted, thereby to vary the length of the sleeve supported by the arbor.

Abstract: A shorthand machine including an electric drive system to advance the platen. In accordance with the invention, the platen can be advanced in a fully mechanical, conventional mode, fully electric mode, or by a combination of electric and mechanical drives. In the electric or electric/mechanical modes, after the shorthand machine operator makes a key stroke and releases the keys, an electric circuit pulses an electric motor connected to the platen to drive the platen for a predetermined duration of time. Subsequent to the driving pulse, power to the motor is reversed to quickly brake the motor and bring it to a rapid stop. The duration of time that the motor is activated may be varied, varying the amount of advancement of the platen, and thus varying the distance between recorded key strokes for each word or part of word generated by the operator of the shorthand machine.

Abstract: A negative resistance element having two terminals (11, 12;) a resistor (R1-4) connected in a path between the terminals, and a current mirror arrangement (T1, T2; T3, T4;) responsive to a current flowing into the first terminal (11) to produce a current through the resistor R1-4 in such a direction as to increase the voltage of the second terminal 12 relative to the first terminal 11.

Abstract: A tab-top can opener is provided which facilitates opening can tops of both the pull-off and stay-on type. The opener comprises a slotted body portion integrally formed with a handle at one end and a chisel-like starter edge at an opposite edge. A transverse tab slot extends through the body portion for tab insertion and holding while the tab-top is pried to open the can. A wall portion defining one side of the slot includes a striker projection extending slot-outwardly a distance from a lower side of the body to afford leverage in removing tab-tops.

Abstract: A continuous contactor comprises a rotary tubular rotor through which the streams to be contacted flow. The rotor has an inner wall which is substantially cylindrical and an outer wall spaced from the inner wall. The rotor is divided internally into a number of rings of buckets by axial and radial separators. Each bucket has an opening in the cylindrical inner wall at the leading part of the bucket with respect to the direction of rotation of the rotor.

Abstract: A composite roll for a rolling mill is constituted by a sleeve and an axially adjustable arbor therewithin. The ends of the sleeve are closed by end members, one of which has an axial passage with a diameter smaller than the bore diameter of the sleeve. An adjustment rod is secured to the arbor and passes through the passage of the end member. By operation of the adjustment rod, the position of the arbor within the sleeve and hence the axial compliance of the roll can be adjusted.

Abstract: An array processor consisting of a plurality of sections (S1, S2-S9), with switching means (24,26,30,32) selectively operable to by-pass any one of the sections so as to effectively remove it from the system. One of the sections normally acts as a stand-by, and is by-passed. However, if one of the other sections fails, that section is by-passed and the stand-by is returned to service. The currently active sections are allocated sequential addresses.

Abstract: A voltage controlled negative resistance with two terminals (12,13; 15,16; 19,20) and first and second current paths connected between the terminals. A current mirror arrangement (T2, T3; T5, T6, T7, T8; T9, T10) so controls the current in the second path in accordance with the value of the current in the first path such that any variations of current in the second path are larger than in the opposite sense to variations of current in the first path.