Abstract: An axial piston pump capable fo swinging out to one side from the zero-stroke position is provided in which a force acting in the direction to the zero-stroke position engages on one side of a final control element and a spring force acting in the direction to the maximum stroke position engages on the other side, and the force acting in the direction to the zero-stroke position is produced by an operating cylinder-servo piston unit, whose servo piston is connected with the control bottom of the pump and a regulating unit is located in the servo piston in order to faciitate a minimal structural volume and cost, where this regulating unit preferably has two springs, one of which is supported against the housing and the second is supported against an auxiliary piston that is acted upon by the pressure beyond a restrictor in the delivery line.

Abstract: A hydraulic valve is provided which can be modified to provide priority compensation, parallel pressure compensation, inlet check functions and a float function by changing a flow through inlet valve portion in the inlet chamber of the valve.

Abstract: A hydraulic valve is provided which can be modified to provide priority compensation, parallel pressure compensation, inlet check functions and a float function by changing a flow through inlet valve portion in the inlet chamber of the valve.

Abstract: An adjustable axial piston machine of swash plate construction is provided in which the working pistons are supported against a swash plate that is formed on a rocker body 6, which in turn is supported with a semi-cylindrical support surface against a hollow-cylindrical bearing surface 4, in which case at least one pressure pocket recess 7, 57 is provided for generating a pressure cushion counteracting the bearing loads and it is connected with the high pressure line through channels in the servo piston that is capable of sliding in the operating cylinder loaded with high pressure.

Abstract: In a cable gland comprising two tubular members each wider at one end than at the other and telescopically engageable at their respective wider ends to define an annular chamber around a cable end inserted through the telescoped members with means for urging the tubular members axially together after the chamber has been filled with an appropriate sealing compound, at least one resilient contact finger is in electrical continuity with one of the tubular members and projects inwardly in order to make effective contact with a corrugated sheath or other metallic layer of the cable. The contact finger(s) is/are thus effectively embedded in the sealing compound, and locked in position when it sets, so giving a secure contact as well as an effective fluid-tight seal.

Abstract: The invention concerns a tube release roll mill with four or more driven rolls, which in pairs form a pass opening. The diagonally positioned identically constructed rolls have an enlarged working surface width. A certain roll pair spacing is also provided, as well as an enlarged angle of attack of the rolls, which together result in the wall thickness of the tube bloom being more uniform, the development of fewer surface defects, and a quieter operation of the roll mill.

Abstract: A compact and readily portable foot holding apparatus for performing sit-ups and like exercises is disclosed. The device has a general "T" shaped appearance formed from a flat cross bar member having a pair of foot holding straps thereon and a substantially flat elongated member. One end of the elongated member is designed to engage the top surface of the cross member in a manner such that when the user sits on the opposite end of the elongated member, the user's weight resists upward movement of the cross bar and foot straps. In some embodiments an exercise mat is incorporated for comfort and in all cases the apparatus can be easily assembled and disassembled without tools.

Abstract: The system includes a central fluid heater or cooler and an electrically driven centrifugal pump which pumps fluid therefrom to a supply main from which individual lines lead to each unit supplied. Return lines from each unit bring the used fluid back to the heater or cooler. The supply main is provided with a single digital flow meter or equivalent measuring device and digital thermometer. Each supply line has a control valve and means to signal the opening and closing of that valve. Each return line includes a digital thermometer. The signals from the above-mentioned apparatus are supplied to a microprocessor. The quantity of energy used by each unit is proportional to the volume of fluid received, which is metered by the change in flow when the unit valve is opened and the change in the opposite direction when the valve is closed, multiplied by the temperature difference between the received and the returned water.

Abstract: In a continuous friction-actuated process for the extrusion of copper, a passageway 3 is formed between an arcuate first member and a second member in the form of a wheel 1 having a circumferential groove 2 formed in its peripheral surface into which groove the first member projects. The wheel is rotated and metal is fed into the passageway at one end and extrudes from the passageway through at least one die orifice 6 located in or adjacent to an abutment member 5 extending across the passageway at the other end thereof. The abutment member is of substantially smaller cross-section than the passageway so as to leave a substantial gap between the abutment member and the groove.

Abstract: A novel weighing system for cable hoist sheave systems is provided which utilizes a plurality of shear type load cells arranged in a stable 3-point configuration which is capable of supporting side loadings without destroying the vertical reading. Uneven distribution of the material does not affect the stability of the system and an accurate weight of the load is determined.

Abstract: The invention concerns an arrangement for the bending of laying tubes for wire-winding layering apparatuses, in which the molding body that determines the form of the laying tube runs essentially horizontally and is rotatably supported, such that a better manipulation of the highly heated laying tube is achieved during bending. The molding body also consists of two drums, one inserted into the other, the outer one of which has a lateral edge that matches the laying tube form desired and the two drums have a generated surface that matches the laying tube form desired. Together, they serve as the stop surfaces for the bending process. In this manner, the bending of the laying tubes is considerably simplified and a precise laying tube form is achieved.

Abstract: A hydrostatic drive system is provided with an adjustable hydraulic motor operatively connected between a high pressure main line and a low pressure line and equipped with a control arrangement that influences the setting in an r.p.m.-dependent manner, the improvement comprising a safety means that limits the stream flowing through the hydraulic motor.

Abstract: Methods are provided for forming protective diffusion layers on nickel, cobalt and iron base alloy parts comprising the steps of depositing a coating of a platinum group metal on the surface of the part to be protected and forming a diffusion layer of platinum and aluminum on said surfaces by gas phase aluminizing said surfaces out of contact with a source of gaseous aluminizing species at elevated temperature.

Abstract: A charge air cooler is provided made up of a plurality of spaced generally parallel turbulators, each said turbulator comprising an outer channel member having a bottom wall and two transverse side edges, an inner channel member having a bottom wall and two transverse side edges, the side edges of the inner channel interfitting closely within the side edges of the outer channel member, an accordian shaped fin assembly between said channels having side edges of a plurality of accordian folds in contact with the bottom wall of both the inner and outer channel members, a transverse heat exchanger fin assembly between adjacent turbulators, frame means surrounding said turbulators and heat exchangers, header means at each end of said turbulators, and flange means around the periphery of each said header means forming therewith one of an inlet and outlet well whereby the turbulator ends may be operatively connected to a source of fluid to be cooled.

Abstract: A rolling mill plant has a planetary skew rolling mill and a reducing or sizing rolling line disposed at a short distance therebeyond for the purpose of manufacturing tubes. In order to avoid axial stressing of the work material between the planetary skew rolling mill and the reducing or sizing rolling line when the work material is simultaneously located in both of them, a tension and compression measuring device is disposed in the region of the reducing or sizing rolling line for the purpose of corresponding regulation of the latter's drive motor. A torque measuring device is disposed between the mounting of the mandrel rod of the planetary skew rolling mill in order to be able to detect torque stresses in the work material which are then eliminated in dependence upon the measured values of the torque measuring device by corresponding regulation of the rotational speed of the rolls and of the rotor of the planetary skew rolling mill.

Abstract: In a method of continuously casting unrefined electrodes in quantity for use in the electrolytic refining of metal in which a metal e.g. copper, strip is continuously cast and cut at spaced positions along its length to form electrodes, a substantial saving in metal is effected by casting the strip in such a way that, in longitudinally spaced minor portions of its length, the strip has at least one hole, recess in at least one of its side edges, or region of substantially reduced thickness as compared with that of the major portion of its length.

Abstract: A composite connector for use with a perforated circuit board is formed from a preform of electrically conductive sheet metal which is folded to form, at one end of the composite connector, a socket which will make a snap fit in a hole in a circuit board and in which a terminal pin of a circuit component can be resiliently gripped and, at the other end of the composite connector, two bifurcated contacts. The bifurcated contacts are transversely spaced apart and are of such a form that when a length of insulated wire is introduced between the limbs of each bifurcated contact, the limbs will cut through the insulating covering of the wire to effect an electrical connection with the wire at two positions spaced along its length.

Abstract: In an electric and/or optical cable for use suspended under water at depths of at least 1,000 m or for direct burial in the ground, each core is surrounded by a water-impermeable barrier comprising a cushioning layer of elastomeric material and, a longitudinally applied, transversely folded metal tape carrying on its outer surface a plastics coating and an outer plastics sheath is bonded to the plastics coating of the water-impermeable barrier. The metal tape has a helically extending corrugation formed by winding around the folded tape, prior to application of the plastics sheath, a plastics coated terylene filament which is applied under such a tension as to form the helical corrugation and to cause elastomeric material of the cushioning layer to fill the trough of the helical corrugation in the inner surface of the folded tape, the plastics coating on the terylene filament being bonded to the plastics sheath.

Abstract: A crib member for forming underground cribbing is provided in the form of a concrete annulus formed within at least one annular metal retaining member so as to form a donut shaped member. A plurality of such members is stacked one on top of another to form a cylindrical cribbing with a central hole.

Abstract: In a circuit board installation in which circuit boards are slidably mounted in opposed guide rails of a rack in a cabinet, an efficient and relatively inexpensive flat cooling module is slidably mounted in opposed guide rails between two circuit boards. The cooling module comprises a pair of flat side walls spaced apart and sealed together around their edges to form a sealed chamber, an inlet port in the cooling module connected to a source of pressurized cooling fluid and, in each of the side walls, mutually spaced orifices in which nipples may be fitted and through which pressurized cooling fluid is directed towards components of the adjacent circuit boards.