baber/WOPTO huggingface dataset:
Patent GB-1515173-A (GB)
Title: Fluidic repeater
IPC: F15B9/08
Filed: 1975-07-17
Abstract: 1515173 Fluid-pressure servomotor systems W B LEONARD 17 July 1975 [18 July 1974 5 Nov 1974] 29984/75 Heading G3P In a fluid-pressure servomotor system, a piston 119 is controlled by a relay valve 67 having tapered points 89, 91 to apply negative feedback to a pilot valve 39 and is mechanically coupled to a valve 133 in parallel with the valve 67 to provide further feedback. A common source 11 supplies the system through fixed restrictors 19, 20 and the pilot valve is operated electrically against centreing springs 40, 42. Guide lands 53, 55 on the pilot valve may be omitted and the feedback valve 133 may be formed in the rod 123 of the piston 119. In a further embodiment the pilot spool is replaced by opposed nozzles (27A, 29A), Fig. 4 (not shown) at opposite sides of a handwheel (39A) which may be axially displaced on a screwthreaded mounting (201) while the feedback valve has a single external groove progressively increasing in depth from each of its ends towards the centre, the interior of the valve being hollow to communicate with exhaust. The nozzle and handwheel type of pilot control may be combined with a relay valve in which the tapered ports are supplied through axial and radial passages (89C, 89D, 89B), Fig. 5 (not shown) providing a non-linear feedback suitable for the pilot control. In Fig. 10 (not shown) an electrically operated flapper (41A) provides the pilot control and the tapered ports in the relay valve (101) are omitted although outer lands (77, 79) of the relay valve may be conical. Alternative constructions of pilot and relay valves have tapered ends (251, 253) or tapered helical grooves (251A, 253A) Figs. 12 to 16 (not shown). Further embodiments include a pilot spool moved by a pivoted hand lever (241) Fig. 19 (not shown), a single tapered port for feed-back in the pistonrod (323), Fig. 20, (not shown), a spring-loaded relay valve, and the feedback valve (644), Fig. 26 (not shown), operated by a cam (640) from the piston (630).
Patent GB-484008-A (GB)
Title: Improvements in devices for supporting and retaining in position globes, reflectors and the like for electric lighting, heating and other appliances
IPC: F21V17/18
Filed: 1936-11-04
Abstract: 484,008. Securing globes and reflectors to holders. LEEVERS, F. W., and METROPOLITAN-VICKERS ELECTRICAL CO.. Ltd. Nov. 4, 1936, No. 30059. [Classes 39 (iii) and 75 (ii)] A fitting for supporting a globe, reflector, or the like of an electric lighting or heating appliance comprises a gallery ring 1 and one or more fixed lugs 3 arranged opposite to a pair of lugs 4, 4<1> mounted on the arms of bell-crank levers 5, 51 the other arms of which engage a pin 7 mounted on a slidable operating member 8 projecting outwardly through the gallery at a point between the movable lugs and biassed by a spring 11 so that normally the lugs 4 are urged outwardly against the inner surface of the globe or reflector but may be retracted for the removal of the globe or reflector by an outward movement of the member 8. In a modified form the lug or lugs 3 are slidable and are directly connected with the pin 7 so as to be retracted with the lugs 4, 4<1>.
Patent GB-671040-A (GB)
Title: Distributing valve mechanism for hydraulic pumps operated by gas pressure
IPC: F04F1/06
Filed: 1948-11-19
Abstract: 671,040. Raising liquids by gaseous pressure. POLOUEKTOFF, J. P. Nov. 19, 1948, [Nov. 20, 1947], No. 30130/48. Class 102 (ii) In apparatus for raising liquids by gaseous pressure, the liquid is alternately admitted to chambers 3, 4 through valves 8a, 9a and delivered to the chamber 5 through valves 8r, 9r. The supply and exhaust of gas to the chambers is controlled by a distributing valve 20 that connects the pipes 26, 27 to the admission 22 and exhaust 24; the pipes 27, 28 are fitted with float valves 150. The distributing valve 20 has pistons formed at its ends and the supply of pressure fluid and exhaust to these pistons is controlled by an auxiliary valve 124 through pipes 154, 156; the admission port 151 is connected to the supply by pipe 152 and exhaust ports 157, 158 are connected to the exhaust 24. The auxiliary valve is actuated by two pistons 127, 130, the outer faces of the pistons are loaded by the pressure in the chambers 3, 4 transmitted through pipes 134, 135, and the inner faces by the pressure in the delivery chamber 5 through pipes 136, 137 connected to a housing having a filter 138. In the position shown pressure is being admitted to chamber 4 and piston 130 is loaded by the pressure in chamber 4 and the lower pressure in chamber 5, due to the loading of the valve 9r, and so moves upwardly at a speed determined by the opening of the valve 140; at the same time the piston 127 is also moved upwardly. The upward movement of the valve 124 moves lever 132 to compress spring 133 which later assists in snapping the valve 124 to its upper position to actuate the valve 20 to reverse the connections to the chambers 3, 4. The pressure of the gas supply to valve 20 is regulated according to the delivery pressure in chamber 5 by a regulating valve 47 controlled by a piston &c. 52 exposed to the pressure in chamber 5 and the pressure of the gas and also loaded by a weight 53. The admission of the liquid to the chambers 3, 4 may be assisted by injectors supplied with working fluid from the adjacent chamber.
Patent GB-868648-A (GB)
Title: Improvements in or relating to photographic cameras or shutters
IPC: G03B7/085
Filed: 1957-09-26
Abstract: 868,648. Photo-electric exposure control GAUTHIER G.m.b.H., ALFRED. Sept. 26, 1957 [Sept. 26, 1956], No. 30216/57. Class 40(3) In a camera in which the exposure is controlled by a photo-cell and the amount of light falling on the cell is varied by a diaphragm and/or a grey wedge or filter, the variation is effected in steps, instead of continuously, by means of a disc, slide or strip provided with holes or slots of various sizes some or all of which may have grey filters, by an iris diaphragm movable in steps, or by a stepped grey wedge. In one form, Fig. 1, an exposure control disc 3 is moved to its extreme position as shown and is returned by a spring 10 to a position determined by a locking pawl 30 controlled by an electromagnet 28. Holes 3a of increasing size pass a photo-cell 1 until the current therefrom is sufficient to operate the electromagnet. In another form, Fig. 2, slots 4a co-operating with a photo-cell 1 are provided in a disc 4 which is movable with an exposure control disc 20 by a maltese-cross wheel 17 and a gear wheel 19. A locking pawl 32 is held in each extreme position by a spring 33 and co-operates with a contact 34 to break the electromagnet circuit. In a modification, a single or double magnetic clutch may be employed instead of a locking pawl.
Patent GB-693714-A (GB)
Title: Improvements relating to hedge cutters
IPC: A01G3/04
Filed: 1950-12-11
Abstract: 693,714. Hedge-cutters. FLEMING, R. J. Dec. 11, 1951 [Dec. 11, 1950], No. 30251/50. Class 6(ii) Hedge-cutter blades are mounted on a bar 1 fixed across a tractor. To one end of the bar is secured one limb of an L-shaped bracket 6. The other limb is bored for receiving a bush 7 surrounding a spindle carrying a pulley 16 driven by a motor on a platform 3 at the other end of the beam 1. A crank-pin on the pulley disc drives the reciprocating toothed blade 28. The coacting fixed blade is bolted to a platform 23 in a plate 11 having a bolt-and- .slot connection with the bracket 6, permitting adjustment of the cutting angle through more than 90 degrees in either direction.
Patent GB-173737-A (GB)
Title: Improvements in or relating to cathode-glow discharge lamps
IPC: H01J17/06
Filed: 1921-11-14
Abstract: 173,737. Lean, C., (Deutsche Glimmlampen- Ges., Franklin Industrie-Ges., and Schmierer, J. M.). Nov. 14, 1921. Vacuum tubes.-In a cathode-glow discharge lamp those parts of the cathode from which no discharge is desired are made of or covered with a metal of high cathode drop, the active parts being of a metal of low cathode drop. The two parts may be secured together mechanically or by welding or soldering, or one metal may be partially covered with the other by squirting or by electrolysis. The cathode may consist of an aluminium plate, part of which is covered with copper, the uncovered part forming a luminous sign. In a lamp, Fig. 2, for direct or alternating current, the electrodes 3, 4 consist of parallel conical spirals of aluminium wire, the leading-in wires 5, 6 being of copper. The electrodes are suspended freely on the carrier 7. The electrodes may alternatively be in the form of spirals on a spherical or ellipsoidal surface. Specification 153,004 is referred to. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the following matter:-In the lamp shown in Fig. 3 (Cancelled), the cathode comprises a rod 12 of solid alkali-metal alloy, over which is fitted an aluminium cap 13, covered in turn by a shorter cap 14 of copper; the cathode drop of aluminium is higher than that of the alkali alloy and lower than that of copper. The discharge commences between the anode 11 and the nearest part 14 of the cathode but immediately passes to the part 13 and finally to the part 12. The cathode may comprise more than three or only two metals. In the lamp shown in Fig. 7 (Cancelled), the electrodes mav consist of wires wound in a double thread on the hollow stem 41. The inside of the stem may be provided with a silver coating which may be earthed or connected to a supply lead. The electrodes may be so close together that discharge by the shortest path is prevented by " valve action." A series resistance 43 may be wound on a bobbin 42 mounted within the stem 41 and enclosed by the screw cap 46; the bobbin is provided with a flange 48 which bears against the neck of the lamp, and with holes through which the leading-in wires pass. Disintegration may be reduced by providing the electrodes by milling or otherwise with elevations and depressions which are smaller than the thickness of the negative luminous film. Electrodes may consist of two or more wires, bands, or ribbons of the same or different metals twisted about one another. In one lamp, two such electrodes are bent into S-form. The electrodes may be arranged in a plane and may be coated on the back with lac, enamel, or the like, or they may be supported on a plate of porcelain, soapstone, or the like or of quartz in glass. This subjectmatter does not appear in the Specification as accepted.
Patent GB-931347-A (GB)
Title: Improvements in or relating to arrangements for cutting and controlling weft threadsin looms
IPC: D03D45/20
Filed: 1961-08-23
Abstract: 931,347. Change-box looms. E. KENK. Aug. 23, 1961 [Sept. 21, 1960], No. 30382/61. Class 142 (2). A change-box loom has a weft holding and cutting device which operates every time the change-box is moved. When the change-box 7 is moved a cam track 8 operates a bell-crank 9 to move a hook 15 into and out of a slot 16 on the slay 4. The hook 15 pulls the weft, from the last used shuttle, into a cutting device 17 and against a suction tube 5, operated from and reciprocable with the slay 4, which holds the cut ends. A similar device may be provided on the bobbin change side of the loom.
Patent GB-630777-A (GB)
Title: Improvements relating to contractible rings for lamp fronts and other purposes
IPC: F21V17/00
Filed: 1947-11-17
Abstract: 630,777. Band clips. LUCAS, Ltd., J., and ORME, J. D. L. Nov. 17, 1947, No. 30426. [Class 44] A split band e.g. the bezel of a motor vehicle lamp is provided with contracting means comprising a pair of mutually inclined lugs b at the adjacent ends of the band, a coupling piece c slidable on the lugs and a screw e engaging a threaded hole in the coupling piece for moving it along the lugs to draw the ends of the band together. The ends of the band are formed with notches to accommodate the screw.
Patent GB-1073017-A (GB)
Title: Improvements in or relating to the production of electrical cells
IPC: H01M50/463
Filed: 1964-08-04
Abstract: 1,073,017. Batteries. SOCIETE DES ACCUMULATEURS FIXES ET DE TRACTION. Aug. 4, 1964 [July 17, 1963; June 4, 1964], No. 30481/64. Heading H1B. Three sheets, such as sheet 10, 11, 12, each consisting of a plurality of identical plates joined by short strips are used in the manufaeture of a stack of electrodes. The separator 12 comprises a zig-zag sheet, the plates of which are so formed that the line joining the centres of two adjacent plates is perpendicular the line joining the centre of one of these plates and the centre of its other adjacent plate. As shown in Fig. 2 the end plate 12a of a sheet 12 of separator material is first sandwiched between the end plate 10a of a sheet 10 of negative electrode material and the end plate 11a of a sheet 11 of positive electrode material. The sheet 12 is then folded over so that plate 12b is superposed on plate 11a. Sheet 10 is then folded so that plate 10b is superposed on plate 12b. The folding operation is continued in this manner to produce a stack of alternate positive and negative electrodes spaced apart by separator plates. In Fig. 10, the electrode sheets (23, 24) are in the form of parallel-sided tapes, no interconnecting strips being provided, whereas the separator sheet (25) is of stepped form. In Fig. 11 (not shown) the electrode sheets comprise interconnected oval plates and the separator sheet comprises interconnected disc-shaped plates. In Fig. 13, (not shown) the individual plates are in the form of polygons e.g. octagons. Instead of the plates and interconnections being formed integrally they may be formed separately and then joined.
Patent GB-751465-A (GB)
Title: Improvements in kick-starters for internal combustion engines
IPC: F02N3/04
Filed: 1954-10-22
Abstract: 751,465. Turning-gear. RANSOMES, SIMS & JEFFERIES, Ltd., and BETTS, C. A. Oct. 22, 1954, No. 30494/54. Class 7(5) In a kick starter comprising a free-wheel pinion 8 on an engine shaft 3, a toothed quadrant 6 for driving engagement with the pinion, and a foot lever 1 separate from the quadrant, the lever 1 engages with a roller 10 on the quadrant so that upon depression of the lever 1 the quadrant 6 is moved through a greater angle than the lever. A pin 2 upon which the lever 1 is pivoted, roller 10 or the quadrant extension 9 may be adjustable, so that the ratio of the movements of the foot lever and quadrant can be varied. The lever 1 may be spring returned to the inoperative position.
Patent GB-1034975-A (GB)
Title: Shielding gas boxes for vertical welding
IPC: B23K9/32
Filed: 1964-08-04
Abstract: 1,034,975. Welding by fusion. AIR REDUCTION CO. Ltd. Aug. 4, 1964 [July 19, 1963], No. 30497/64. Heading B3R. A gas box for directing a curtain of shielding gas to a weld zone during vertical arc welding has an internally cooled deflector for deflecting the gas as it issues from the box. A gas box 20 soldered to the top of a melt retaining pad 24 similar to that described in Specification 1,034,974 has a gas inlet 26 leading into a diffusion chamber 38 having gauges 48 and a solid front wall 39. The gas, e.g. 12-27% carbon dioxide, balance argon, is deflected by a hollow deflector 28 having coolant connections 32, 34. An auxiliary gas box 22 superposed on the main gas box 20 has an outlet slit 37 through which air or argon is passed to form a vertical screen protecting the weld zone from draughts. An insulating shield 68 may cover the auxiliary box 20.
Patent GB-417083-A (GB)
Title: Improvements in and relating to an apparatus for automatically displaying lantern slides, bearing advertisements or other matter
IPC: G09F19/18
Filed: 1933-11-03
Abstract: 417,083. Globe holders. CLAYTON, C., 14, Handel Close, Edgware, Middlesex. Nov. 3,1933, No. 30561. [Class 75 (ii).] Suspension means for a globe 2 comprise three arms 5, carrying vertical members 6 each of which has two horizontal lugs 7 between which a sleeve 8 is rotatably mounted on a fixed pin. Each sleeve 8 has an arm 9 between a cushion 11 on which and the upper lugs 7 the globe rim is gripped. The sleeve 8 is forced up by a thumb-screw 12 threaded on a hook bolt engaging a flange 13 on the sleeve 8. To release the globe the screws 12 are loosened and the sleeves 8 turned to disengage the arms 9. The sleeves 8 may be connected for simultaneous movement by an endless wire 15 wound round drums 14 thereon.
Patent GB-772463-A (GB)
Title: Armoured vehicle
IPC: F41A9/50
Filed: 1954-10-22
Abstract: 772,463. Armoured vehicles. EVEN, G. Oct. 22, 1954 [Feb. 16, 1954], No. 30562/54. Class 92. An armoured vehicle has a rotatable turret 2, Figs. 2, 3, on which gun or rocket tubes 3 are mounted externally thereof, the turret being provided with a loading hole 8 and the tubes each having a rear portion 6 separate from the front portion and pivotable about a vertical axis 5 on the turret 2 so that the rear portion 6 can be pivoted to bring its loading end in front of the hole 8 to permit loading from within the shelter of the turret and then pivoted back into alignment with the front portion for firing. Alternatively the gun barrel as a whole may be pivotable about the axis 5 on the turret 2. The rear portions 6 are carried by a support 4 provided with an armouring plate 12 which, in the firing position, covers the hole 8 and a fixed armouring plate 40 protects the rear portions 6 in loading position. The roof the body 1 of the vehicle is also provided with a covered opening 13, Fig. 2, to permit loading from within the vehicle by rotation of the turret as described in Specification 730,754. The ammunition feed chain 15 permits loading through the opening 13 by one occupant who takes the projectiles from the chain by a sliding motion parallel to their axes, whilst the other occupant in the turret 2 can load through the opening 8 by lifting a projectile from the chain as shown in Fig. 4. For this purpose a sliding cover 17 gives access to the chain and each projectile 18 is housed in two semi-cylindrical portions 20, 21 the portion 21 being hinged to permit opening of the housing and extraction of the projectile. A spring-urged bolt 10, Fig. 3, locks the front and rear portions of the tubes in the firing position, and the pivoting movement of the rear portions and unlocking of the bolt 10 are effected by an hydraulic system, Fig. 5 (not shown).
Patent GB-841202-A (GB)
Title: Improvements in internal combustion engine fuel injection systems
IPC: F02M49/02
Filed: 1956-10-08
Abstract: 841,202. Fuel ignition systems. BESSIERE, P. E. Oct. 8, 1956 [Oct. 13, 1955; Nov. 24, 1955; Jan. 20, 1956], No. 30635/56. Classes 7(3) and 7(6). [Also in Group XXVIII] A fluid-pressure operated member in a fuel injection system, e.g. a cylinder pressureoperated piston 2, Fig. 1, integral with a pump piston 3 feeding fuel to an injector 11, is loaded against operation by the fluid pressure by an electromagnet. In Fig. 1 an electromagnet 12 is energized to hold an armature 13 in contact with its polepieces, which armature acts through distance pieces 15 on the piston 2 to prevent movement thereof until the cylinder pressure acting on piston 2 is sufficient to overcome the pull of the magnet whereupon pistons 2 and 3 move upwards rapidly and injection takes place, the amount of fuel injected being controlled by an adjustable stop 6 controlling the travel of the piston 3. The time of injection is controlled by adjusting the current through the electromagnet 12 by a rheostat 17 controlled manually or by a centrifugal governor. Alternatively the electromagnet may be de-energized at the moment when injection is to take place, the circuit containing a rotary engine driven switch which is adjustable to vary the time of injection. In Fig. 4 a fuel injection valve 106 is resiliently connected through a spring 127 to an armature 129 attracted by an electromagnet 130, the valve 106 seating at 107 in a nozzle 105 carried by a piston 102 actuated by cylinder pressure and forming with a stationary plunger 111 an injection pump having a pressure space 113 supplied with fuel from an inlet 114 through passages 118, 117 and 119, excess fuel escaping from the pressure space through a passage 122 and being sucked out of space 103 by a suction pump through passage 123. At the start of compression the electromagnet 130 is energized to cause armature 129 to hold the valve 106 to its seat. The piston 102 lifts slightly under pressure until the ports 119, 121 are closed but further movement is then prevented by the fuel trapped in space 113 until electromagnet 130 is de-energized, which permits valve 106 to rise from its seat, the piston 102 then completing its stroke and forcing the fuel from space 113 through the orifice 108. Passages 132 in the armature 129 prevent damping of the motion thereof by air trapped underneath and fuel leaking past the valve 106 escapes through a passage 138. In Fig. 5 the upward movement of an injection pump piston 203 actuated by cylinder pressure is opposed by electromagnet 234 and a by-pass valve 237 serving to determine the end of injection by releasing the pressure in the pump pressure space 209 is held closed and opened respectively by electromagnets 220a, 240, the electromagnets 234, 220a, and 240 being energized under the control of rotary enginedriven switches. In Fig. 7 an electromagnet 335 holding a by-pass valve 334, connected to the pressure supply pipe 311a of an injector 312, closed is de-energized to permit valve 334 to open and terminate injection.
Patent GB-744439-A (GB)
Title: Improved process for the manufacture of cast iron or steel shot from a cast iron alloy
IPC: B24C11/00
Filed: 1953-11-06
Abstract: In a process for the manufacture of cast iron or steel shot molten cast iron, to which may be added alloying metals such as 0-1 per cent Mn, 0-1,8 per cent Si, 0-0,5 per cent Ni, 0-0,4 per cent Cr and/or 0-0,3 per cent V, is incompletely blown until the carbon content is reduced to 0,15-3,0 per cent and then sprayed and quenched.  The shot may be thermally refined by heating to 700 DEG -800 DEG C. for one hour and then cooling in air or water.
Patent GB-914154-A (GB)
Title: Improvements in or relating to the production of uranium-carbon alloys
Inventor: WILLIAMS JACK
IPC: G21C3/62
Filed: 1959-09-08
Abstract: A dense uranium-carbon compound, which may also contain plutonium, is produced by cold-compacting and sintering a mixture of uranium and carbon powders (with or without plutonium) containing also iron in the form of UFe2 or U6Fe, the iron forming 1 to 10% by weight of the mixture.  It is stated that, when using UFe2, maximum density is obtained when the carbon and uncombined uranium contents of the starting mixture are in stoichiometric proportions to form uranium monocarbide. Specifications 821,287, 825,041 and 914,153 are referred to.ALSO:A dense uranium-carbon alloy, which may also contain plutonium, is produced by cold-compacting and then sintering at not less than 800 DEG  C. a mixture of uranium and carbon powders (and, if desired, plutonium powder) containing also iron in the form of an intermetallic compound of uranium and iron, the iron forming 1-10% by weight of the mixture.  The compound may be UFe2 or U6Fe, use of the latter being limited to iron contents of less than 3.8%.  Heating of the compact is preferably carried out rapidly as described in Specification 914,153.  In examples described uranium powder of less than 300 mesh was mixed with ultrafine graphite and the mixture then mixed with UFe2. The resultant mixture was cold-compacted at 60 tons/sq. inch, then passed rapidly into a vacuum furnace at 1100 DEG C.  The compacts were estimated to reach a maximum temperature of 1200-1450 DEG  C. within a few minutes, and were then heated at 1100 DEG  F. for two hours.  Specifications 821,287 and 825,041 are referred to.