Abstract: The invention is a new design of chuck door which has a knife-edge sealing strip that fits tightly in a slot of the door and is adjustable longitudinally by jacking screws. The strip is locked in position also by screws. The inside of the chuck door is provided with a cavity within which heat insulating refractory material is retained. A pivoted heat shield hangs from extended side heat shields in the coke oven and pivots up to allow entry of the leveler bar through the opening closed by the chuck door. The design is readily adaptable to new and to existing oven doors.

Abstract: A hydrostatic drive system with an adjustable pump is provided with branch lines from a main delivery line to several consumers, an arbitrarily actuatable switch in each branch line, an adjustable parallel connecting restrictor in each branch line with an adjusting element loaded on one side by pressure from either the main delivery line or the branch line and on the other side by a spring and control pressure and a source of common control pressure furnishing the control pressure to the adjusting element through a check valve.

Abstract: A method of producing synthetic brevicomin by direct distillation and a method of using the same in interfering with normal propagation of Dendroctonus beetles.

Abstract: A robotic manipulator includes a plurality of segments connected by joints between a fixed base and the distal end of the arm. At least one of the joints comprises a servomotor having a stator and a rotor one of which is attached to a segment positioned closer to the fixed base, the other component of the servomotor being attached to a driven segment positioned closer to the distal end of the arm. The said mechanical arm is directly driven by the servo motor without provision of any transmission mechanism.

Abstract: In an adjustable axial flow piston pump having a swivellable component such as a swash plate, pressure chambers for swivelling the swivellable component, a lever connected with the swivellable component and supported in the housing of the pump, a final control member mounted in and movable in the lever, a fluid passage in the lever supplying fluid pressure to the control member, a fluid passage in the pump housing connected to the pressure chamber and a fluid passage in the lever connecting the control member and the fluid passages in the housing whereby fluid pressure is delivered through the lever and control means to the pressure chamber.

Abstract: A glass door and window structure is provided in which a glass is placed in a groove in a metal frame having one straight and one sloping side with the glass spaced from the sloping side and an elongate metal shoe having a corresponding sloping side is placed between the glass and sloping side with the sloping sides in contact and means are provided for drawing the shoe into the groove to tightly and sealingly engage the glass.

Abstract: The chuck comprises a cylindrical body portion attached to the drill motor shaft and formed with inwardly and downwardly inclined slots which holds its jaws. Those jaws carry circumferential threads on their outer surfaces. An internally threaded ring rotatable about the chuck body meshes with the teeth on the jaws and causes them to move downwardly or upwardly as the ring is rotated. The ring is provided with an external groove which is not quite fully circumferential. The chuck body and ring are enclosed by a rotatable sleeve having an internal recess in the plane of the groove only large enough to hold a ball bearing between it and the groove on the ring. The chuck body and sleeve are provided with interlocking means which prevent longitudinal displacement but permit rotational movement therebetween. The chuck is caused to grasp the drill stem by holding the sleeve in hand and starting the drill motor.

Abstract: Centrifugation chromatography columns including column members for containing a particle bed and a porous member underlying the bed. The column members have an upper receiving opening and a lower discharge opening. A receptacle is demountably secured to the column. Attachment is effected through cooperation between a lower portion of the column members and an upper portion of the receptacles. Support structures may be provided on the exterior of the column members to facilitate support thereof by a centrifuge. In another embodiment of the invention continuous column centrifugation chromatography is provided by means of a column rotor on which are mounted a plurality of columns. A collector rotor is provided with means for receiving material discharged from the columns. Relative synchronized movement between the column rotor and the collector rotor is provided. A distribution system for supplying liquid to be separated to the columns on a continuous basis is provided.

Abstract: A clamp for securing at least one cable to a support comprises a channel member having an apertured base and limbs shaped at their free ends for engagement with the support, and a sub-assembly comprising a screw a saddle captive on the end of the screw remote from the screw head and positioned inside the channel member, and a nut threaded on the shank of the screw between the screw head and the saddle, the aperture in the base of the channel being large enough to permit passage of the head of the screw but not so large as to permit passage of the nut.

Abstract: An optical cable comprises at least one optical bundle and/or at least one separate optical fibre housed loosely in at least one bore extending lengthwise in an extruded elongate body of rubber or plastics material and, embedded in the extruded elongate body and arranged side by side with the bore or bores, at least one separate elongate reinforcing member. Preferably the bore or bores and the reinforcing member or members extend substantially parallel to the axis of the extruded body and their axes lie in a substantially common plane. Alternatively, a single reinforcing member may extend centrally in the extruded body and a plurality of separate bores be arranged around, preferably helically around, the central reinforcing member.

Abstract: In a continuous friction-actuated extrusion process, such as the Conform process, particulate material is fed into the extrusion passageway at a rate low enough to the rate at which material is extruded from the die orifice to be determined by and substantially equal to the rate of feeding. Feeding can be achieved by a simple hopper feeding through an adjustable constriction, preferably formed by a simple gate valve, or a gravimetric or volumetric controlled rate feed device can be used.

Abstract: An apparatus for forming metal articles, such as rods and tubes by aspiration casting is provided in which a hollow frangible mold, such as a glass tube, is immersed at one end in a molten metal bath, a vacuum is applied to the other end controlled with respect to temperature of the molten metal so as to substantially fill the mold with a minimum of turbulence, the filled mold is withdrawn from the metal and the frangible mold is shattered to remove it from the metal article formed within.

Abstract: A flexible stranded body, such as an electric conductor of an overhead electric transmission or distribution system, comprises at least one stranded layer of elongate elements of metal or metal alloy, at least one elongate compartment within and extending throughout the length of the stranded body and, loosely housed in the elongate compartment, at least one separate optical fibre and/or at least one optical bundle. Preferably, the elongate compartment extends within a circumferentially rigid central core which is surrounded by the stranded layer or layers but it may be a bore in an elongate element of a stranded layer or an elongate space bounded by two adjacent elongate elements.

Abstract: A method and apparatus for adjusting tooth flank play between two sun gears and at least two planetary gears of a bevel gear differential drive is provided in which, after establishing the operating positions of both sun gears on their sun gear shaft, each planetary gear is shifted on its shaft, previously inserted into a transverse bore of the sun gear shaft, after which the planet gears are brought into their precise operating positions relative to the sun gears and perpendicular to the sun gear shaft and are stopped there with the maintenance of an equal tooth flank play to the sun gears, by first inserting the planetary shaft into the transverse bore of the sun gear shaft in an axially displaceable manner, then placing each planetary gear on its planetary gear shaft with a previously calculated axial distance from the sun gear shaft, and then adjusting an equal tooth flank play by axial displacement of the planetary gears with their planetary gear shafts in the transverse bore and finally fixing planetary

Abstract: A new solar heat engine is provided in the form of a pressure oscillation generation device having a chamber with two spaced apart walls, means on one wall receiving sunlight through said one wall, means on the other of said walls continuously cooling said other wall, a light absorbing surface on a thermal shield movable between said walls, means for automatically alternating said sunlight absorbing surfaced thermal shield back and forth between said walls whereby a heat expansible fluid contained in said chamber is alternately heated and cooled thereby causing said fluid to undergo alternate expansions and contractions. The alternate expansions and contractions of the fluid are used to produce useful work by pump action, torque action, compression and the like.

Abstract: A vertical back plate member is provided for mounting to a bumper. A pair of parallel side members extend from the back plate. A partition member joins the side members and forms a socket area with the back plate and side members to receive and position a bumper rack member in a vertical position. A strut member joins the side members near front edges of the side members and is positioned below a bottom edge of the partition member such a distance so as to permit a bumper rack member to be inserted between the bottom edge of the partition member and the strut member. Each side member has aligned first holes between the bottom edge of the partition member and the strut member to receive a pin which passes through a rack member to prevent horizontal movement of the rack member and to serve as a pivot point for movement of the rack member from a horizontal position to a vertical position.

Abstract: The invention provides a circular knitting machine having a control mechanism with a rackable cam drum. A rackable timing drum carrying control elements for the speed of progress of the timing drum and activation of the cam drum racking, and a quick re-zeroing control for racking the cam drum quickly to a zero position independently of the control elements in which a racking means is arranged to rack the timing drum at every stroke with a length of stroke in excess of the timing drum racking strokes during normal knitting. A control member controls the racking means to inactivate it during normal knitting and activate it when re-zeroing so as to re-zero both the cam drum and the timing drum quickly while all knitting stations are inoperative.

Abstract: Apparatus for converting the energy of the wind into mechanical energy for use in the generation of electricity comprises an upstanding column a fan which is freely rotatably mounted on the column and which comprises circumferentially spaced, radially extending blades and, supported by and freely rotatable about the axis of the column, a turbine which surrounds and is radially spaced from the column and which comprises circumferentially spaced blades extending lengthwise with respect to the column. Preferably, an annular body is supported by the column and has an upper surface of such a shape as to encourage laminar flow of the wind over its surface. Preferably, also, over an upper part of its length immediately below the fan the column has circumferentially spaced, helically extending fins 4 defining passages wind being caused to flow upwardly within the passages to form a vortex.

Abstract: A hydraulic spool valve is provided for controlling the flow of fluid between a pump, a consumer of hydraulic energy and a reservoir which spool has pressure controlled by-pass means by-passing fluid from the fluid inlet of the valve to tank while the valve is moving from a neutral to a work position and the reverse thereof at a pre-selected pressure level.

Abstract: Risk of fracture of an optical fibre in an overhead stranded electric conductor having an optical fibre loosely housed in an elongate compartment extending throughout the length of the conductor when the conductor is subjected to a tensile load greater than that which the optical fibre is designed to withstand is substantially reduced by supporting the stranded conductor from each of two opposite sides of a tower by suspension means incorporating a weak link designed to fracture at a tensile load less than that which the optical fibre can withstand before fracturing. An excess length of the stranded conductor extends between fittings at which the suspension means are secured to the conductor, is arranged sinuously down one side face of the tower and, where the stranded conductor is an earth conductor, is detachably secured to the tower at spaced positions along its length by releasable clips.