Abstract: This invention relates to an external cavity slab laser system for pulsed or continuous wave operation consisting of an optically excited, water cooled single or multiple active mirror slab configurations with the external cavity formed by the active mirror and a passive mirror set parallel to each other and separated from each other by a distance greater than the thickness of the slab. Laser beams of both circular and elliptical cross-section can be amplified by the invention which has application in medical apparatus, industrial workstations and defense systems.

Abstract: A fuel pumping apparatus comprises a body housing a high pressure fuel pump to which fuel is supplied by an angularly adjustable throttle member from a low pressure pump. The throttle member mounts an arm and a hollow housing is provided which is secured to the body. A support carries an electromagnetic actuator the armature of which is connected at one end to a connecting rod the other end of which is connected to the arm. A transducer is mounted about and movable with the connecting rod. A clamp adjustably clamps the support within the housing and the clamp can be released to enable for a given axial setting of the connecting rod, the output of the apparatus to be adjusted.

Abstract: A powdery or fine granular ore containing metal oxides is melted and refined by charging the ore and a part of a reducing gas discharged from a vertical type of melting and reducing furnace into a fluidized bed type of preliminary reducing furnace to preliminary reduce the ore therein, charging the preliminary reduced ore heated at a high temperature into the above described melting and reducing furnace and melting and reducing the ore by using a carbonaceous solid reducing agent and air or oxygen rich air heated at a high temperature and discharging the molten metal and the molten slag from the melting and reducing furnace. By using the preliminary reduction step, the pretreatment of the powdery or fine granular ore containing metal oxides, such as formation into pellets, sintered ores, briquets and the like can be omitted.

Abstract: A fuel injection nozzle for supplying fuel to an internal combustion engine includes a valve member which at one end is of reduced diameter and mounts a spring abutment and at its other end is engageable with a seating to prevent flow of fuel from an inlet to an outlet. The valve member is slidable in a sleeve which is also slidable in a nozzle body secured to a holder. A spring is located in a chamber in the holder and the reduced diameter portion of the valve member extends into the chamber. A tubular push piece surrounds the reduced diameter portion to transmit the force developed on the sleeve by the fuel pressure, to the spring abutment. The movement of the sleeve is limited by the engagement of a flange on the push piece with the end face of the holder and the movement of the valve member is limited by the engagement of a step defined on the valve member with the end of the push piece.

Abstract: A hydraulic device includes a piston slidable within a cylinder. Fluid under pressure is admitted to one end of the cylinder through an inlet which contains a restrictor. The piston is formed with an orifice and is biased by a first spring towards the one end of the cylinder. A thrust rod is engageable by the piston to transmit the movement of the piston to an external mechanism. When the piston is moved by rising fluid pressure the orifice is closed by the end of the thrust rod so that a higher value of fluid pressure is required to effect the initial movement of the piston than is required to allow the return movement of the piston.

Abstract: A fuel pumping apparatus includes a high pressure pump and a low pressure pump contained in a housing and driven by a drive shaft which is coupled to a rotary part of an internal combustion engine. The low pressure pump is a vane pump having a rotor in which is formed a plurality of outwardly extending slots which accommodate outwardly spring loaded vanes. The edges of the vanes engage an eccentrically disposed surface formed on a stator. The pump has end plates and inlet and outlet ports communicating with the space defined between said surface and the outer surface of the rotor. The outer edges of each vane are formed with grooves which extend along the edges and the grooves communicate by way of passages with the inner ends of the respective slots.

Abstract: An electromagnetically operable valve comprises a valve member slidable in a bore in which there is a seating. The valve member is moved to the closed position by a solenoid having an armature. A tubular coupling member is secured to the armature and is connected to the valve member through an overtravel spring housed within the coupling member. The coupling member has a flange for engagement with a stop surface to limit the movement of the armature after the valve member has contacted the seating. A return spring is also housed within the coupling member.

Abstract: A process is described in which a tubular bar (27) which is substantially but not entirely filled with flowable solids (28), is closed at one end. To close the tubular bar (27) at its end, a thread (3) is introduced into the tubular bar (27) and is caused to form a ball of thread therein. The thread (3) is preferably introduced into the tubular bar by being blown through a hollow needle (11).

Abstract: A multi-positionable arrangement of substantially parallel bars which form a substantial track for a ball and for disposing the track to a position accessible to the feet, legs, hands and arms of the body to be exercised. The bars are adjustably spaced apart to provide for adjustment of contact engagement with ball surface so that repeated stroking of the ball on the track path requires striking contact at a particular point on the ball surface and thereby exercise of some specific body muscles and reflexes.

Abstract: The dispenser includes a bin which is adjustable for width, and a release mechanism attached to the bin externally of its outlet. The mechanism comprises a sliding shutter and a baffle, vertically disposed and breasted in mutual contact. The shutter is provided with a slot of adjustable height and moves vertically between a raised receiving position and a lowered knockout position at which the packet of coins is ejected from the slot. The baffle is urged against the shutter by the weight of the packets of coin emerging from the outlet of the bin and thus accompanies the shutter at least through part of its vertical travel.

Abstract: A reader for a disk-shaped carrier with Wiegand wires is described which manages with only two permanent magnets (1, 2). The variation of the magnetic field needed for detecting the Wiegand wires is effected by flux concentrating pieces (3, 4, 7) attached to the permanent magnets (1, 2). In order to be able to read the carrier with the Wiegand wires without change when it is inserted into the reader rotated by 180.degree. round its longitudinal axis coinciding with the direction of insertion (14), the flux concentrating pieces (3, 4, 7) are arranged symmetrically with respect to the longitudinal axis (14) which is a two-fold axis of symmetry. To pick-up the Wiegand pulses, two E-shaped soft magnetic cores (9) are provided which carry on their center leg an electrical sensor winding (17). The free ends of the legs of the E-shaped cores (9) face one another and are also arranged symmetrically with respect to the longitudinal axis (14).

Abstract: A method of manufacturing formable as-rolled thin steel sheets having excellent ridging resistance and other properties is disclosed, which comprises rolling a low carbon steel to a given thickness without cold rolling and recrystallization annealing steps. In this rolling, at least one rolling pass is carried out within a given temperature range at high draft and high strain rate.

Abstract: A method of manufacturing a cold-rolled steel sheet having a good deep drawability is disclosed, wherein a hot rolled steel sheet having a composition of C.ltoreq.0.0035%, Si.ltoreq.1.0%, Mn.ltoreq.1.0%, Al:0.005-0.10%, P.ltoreq.0.15%, N.ltoreq.0.0035%, S.ltoreq.0.015%, Ti: (48/14N(%)+48/32S(%)) or {4.times.(C(%)+N(%))}.about.(3.48/12C(%)+48/14N(%)+48/32S(%)) and Nb: (0.2.93/12C(%)).about.(93/12C(%))% is cooled within 2 seconds after the completion of finisher rolling and then at an average cooling rate of not less than 10.degree. C./sec until it arrives at a coiling step, and then the cooled steel sheet is coiled at a temperature of not more than 710.degree. C., subjected to a cold rolling at a reduction of not less than 50%, which was subjected to a continuous annealing in a heatcycle inclusive of heating from 400.degree. C. to 600.degree. C. at a heating rate of not less than 5.degree. C./sec and soaking at a temperature range of 700.degree. C.-Ac.sub.3 point for 1 second or more.

Abstract: A fuel injection nozzle of the inwardly opening type has a valve member slidable in a bore in a nozzle body which is secured to a holder. The valve member is biased by a first spring into contact with a seating and is movable from the seating by fuel under pressure. An abutment rod is engageable by the valve member after a predetermined movement of the valve member away from the seating. The abutment rod is biased by a second spring housing in an insert mounted in screw thread engagement with a bore in the holder. The rod extends through and is guided by an aperture in the insert and is further guided by guide means removed from the insert. The guide means can be a bush carried by the holder, the coils of the first spring or the valve member.

Abstract: Method of controlling a strip crown in a planetary mill line, comprising the steps of rolling a slab by using a shaped feeding roll or rolls before passing between planetary rolls to shape a slab profile in the direction of the width of the slab having a flat or curved central portion, opposite side end thicker than the central portion and side portions thinner than the central portion between the central portion and the opposite side ends and subsequently rolling the slab having such a shaped slab providing a planetary rolled strip having a substantially flat strip crown having a uniform thickness over the width of the strip.

Abstract: This invention describes foundations for buildings and like structures employing steel reinforcement. The invention describes a hook leg having an elongate member bifurcated at each end longitudinally of the member to form a pair of extensions with a slot therebetween, the distal portions of the extensions being bent into a curved form extending transversely of the member to form hooks adapted to resiliently engage a pair of reinforcing rods in the reinforcement, the slots in the unbent portions of the extensions being adapted to receive a second pair of reinforcing rods extending transversely of the first pair, whereby to fix the rods in spaced alignment. The invention minimizes movement or collapse of the reinforcement and makes it much easier to assemble the foundation cage thereby saving in labor and material.

Abstract: A press apparatus for reducing widths of hot slabs comprises a pair of anvils movable toward and away from each other in width directions of the hot slabs, width reduction heads to which the pair of anvils are attached, respectively, and eccentric presses for reciprocatively driving the width reduction heads through sliders, respectively. The apparatus further comprises width adjusting means incorporated in the eccentric presses, respectively, for changing distances between the width reduction heads and the sliders. Each of the anvils has a parallel portion in parallel to a feeding direction of the hot slabs and an inclined portion on an entry side in the feeding direction. With this arrangement, the reducing distance can be set according to the desired distance of reduction in width in continuous width reduction and the reduction in width can be continuously effected with the set reducing distance with high efficiency.

Abstract: A refrigeration system comprises a plurality of assembled modular units each having a refrigeration circuit separate from the circuit of the other units. Each unit includes a housing which defines at least one compartment containing the evaporator of the refrigeration circuit. The condenser is either located in a second compartment in the housing or in a separate chamber associated therewith. A first heat exchange fluid is conveyed to and from the compartment by header pipes, the header pipes of adjacent units being interconnected to form common manifolds for the system. A second heat exchange fluid is circulated passed the condensers of each unit. Electrical controls are provided on each unit to control and monitor operation of the respective refrigeration circuit the controls being interconnected to enable overall control of each unit of the system in accordance with load demand.