baber/WOPTO huggingface dataset:
Patent GB-1513775-A (GB)
Title: Nuclear reactor installation including a control valve
IPC: G21D1/00
Filed: 1975-06-18
Abstract: 1513775 Fluid-pressure servomotor systems KRAFTWERK UNION AG 18 June 1975 [26 June 1974 26 Sept 1974] 26045/75 Heading G3P [Also in Divisions F2 and G6]  A safety valve 8, Figs. 1 and 2, in the live steam line 2 of a nuclear reactor installation, comprises a normally open valve-member 22 controlled by a mechanism sensitive to pressure to rapidly close or almost close the valve when the pressure falls below its normal operating value and to re-open the valve by at most half its fully-open throughflow cross-section if the pressure subsequently rises above a predetermined value in excess of the normal operating value. The valve 8 is located in a safety envelope 3 of the installation together with steam generator 1 and safety valve 13. Outside the envelope the line 2 is associated with a branch 16 having a further safety valve 17 and blow-off regulating valves 20. The valve, Fig. 2, is normally forced fully open by the steam pressure in line 2. However, should the steam-pressure fall, e.g. due to a fracture in the line, sensors would cause hydraulic pressure fluid to be supplied from an accumulator 50 to the space above piston 36 and thereby force the valve-member 22 to close. If, thereafter, the steam-pressure increases to a dangerous level, e.g. because the reactor is not shut-down quickly, it re-opens the valve-member 22 but only by an amount set by an adjustable stop 42. The amount is up to one-half, preferably 30%, of its fully-open flow cross-section. Additionally an adjustable stop 47 may be provided so that when the valve-member 22 is moved towards its closed position it is prevented from completely closing for a short time, e.g. 20 seconds. Alternatively, the final closing movement of the valve may be controlled by a clockwork timing mechanism. In an alternative valve, Fig. 6, the valve-member is actuated by a pair of pistons 116, 121 operating in a common cylinder, the steampressure upstream of the valve-member being communicable with opposite ends of the cylinder via two 2-3 way pressure-responsive valves 126, 128. In the event of damage to the steam system, steam is delivered through valve 128 to act upon piston 116 and close the valve-member 102 as shown. If steam-pressure thereafter rises to about 80 bars, the valve 126 switches to allow the steam to act on piston 121 which, assisted by steam-pressure acting on the valve-member, causes the latter to partially open until piston 121 abuts a stop 122. If the steam-pressure rises further to 88 bars then the valve 128 switches to exhaust the steam from above the piston 116 whereby the valve-member is further opened by an amount determined by stops 142. Complete closure of the valve-member can be effected by delivering compressed air through conduit 134. A pointer 145 and scale 146 indicate the position of the valve-member. Alternative reactor installations incorporating the valve are illustrated in Figs. 3 and 4 (not shown).
Patent GB-261838-A (GB)
IPC: B63B23/04
Abstract: 261,838. Maclachlan Automatic Boat- Davit Co., Ltd., and McLachlan, C. D. Aug. 25, 1925. Boat raising and lowering gear.-In boat raising and lowering gear of the type described in Specification 105,951 in which the davits, in their inboard position, are mounted on inclined parallel tracks 2 which extend down the ship's side, the drums of the winch 3 are stepped to form two-grooved fall-receiving cylindrical sections 4, 5 of different diameters joined by a grooved conical section G. The gearing is so arranged that the section of greater diameter is operative when the boat alone is being raised or lowered and the section of lesser diameter is operative when the davits and the boat are being raised or lowered together from the outboard to the inboard position.
Patent GB-463307-A (GB)
Title: Improvements relating to imitation fuel fires
IPC: F24C7/00
Filed: 1935-09-23
Abstract: 463,307. Imitation solid-fuel fires. FERRANTI, Ltd., and WATKISS, J. H. Sept. 23, 1935, Nos. 26283 and 28086. [Class 126] In an imitation solid-fuel fire in which imitation flames are produced on a viewing surface g by light passing from a light source b through slots d, h in two screens a, f with relative. movement, the relative movement is horizontal and the slots are so shaped that approximately vertical patches of light are gradually built up on the viewing surface and then extinguished. The slots in each screen are such that, in the absence of the other screen, the light passing through them would produce on the viewing surface patches of light which would be approximately triangular, with short bases and long approximately vertical axes. In one screen, the leading base-angles of the triangles are less than 90‹. In the form shown in Fig. 1, the screen f is the rear portion of the material simulating solid fuel, and the viewing surface g is behind the screens. A screen, either opaque or slotted like the screen f, may be provided in front of the rotating screen a. In another form, the viewing surface is in front of the slotted screens, and the imitation fuel is lit by a separate lamp. The slots may be varied in length or shape, and may be filled with transparent material. The fixed screen may be formed by painting or otherwise on the bulb. The bulb may be coloured. The vanes of the rotor a may be reflecting. Both or either of the screens may revolve or be reciprocated.
Patent GB-625126-A (GB)
Title: Improvements in or relating to valve devices for controlling the flow of gas
IPC: F16K31/68
Filed: 1946-09-02
Abstract: 625,126. Thermally-actuated valves. BRITISH THERMOSTAT CO., Ltd., and SHERLOCK, J. E. Sept. 2, 1946, No. 26349. [Class 135] A valve device for controlling the gas supply to an oven comprises a thermally responsive element, e.g. a phial and capillary tube, for actuating, through the bellows 12 and wire 16, a rocking member 17 which moves the gas valve 20, the pivot 23 of the member being carried by a spring-loaded plunger 24 adjustable, by a cam device 8 connected by a pin 7 to a gas cock 5, for determining the oven temperature. The cock may be locked in the " off " position by a latch device described in Specification 606,134. The effect of local temperature variations is removed by a bimetallic disc 33 which varies the loading of the bellows spring 15.
Patent GB-534941-A (GB)
Title: Improvements in or relating to vacuum-operated brake mechanism for the wheels of road vehicles
IPC: F16D65/22
Filed: 1939-09-21
Abstract: 534,941. Vacuum brakes for vehicles. BRISTOL TRAMWAYS & CARRIAGE CO., Ltd., and BUSWELL, F. J. Sept. 21. 1939, No. 2&375. [Class 103 (i)] A vacuum-operated brake mechanism for a road vehicle wheel comprises a reciprocable member 10 for operating the shoes, a vacuum cylinder 23 mounted adjacent to the brake drum, and a piston 24 connected to the shoe-operating member 10. The member 10 extends out through a bearing 11 in a plate 12 carrying the shoes and is pivotally connected to a rod 16 for operating the member 10 by means of a rocking-lever 27 pivoted on a shaft 30 and operated by the piston 24. The axes of the member 10 and of the cylinder 23 are parallel to and offset from the wheel axle. The axes of the connecting pivots between the member 10 and the parts of its operating mechanism are parallel to each other. In the case of a wheel used for steering the vacuum cylinder 23 is mounted on that limb of the wheel fork 18 above the steering pivot 19. Adjustment of the effective length of the shoeoperating member 10 is obtained by rotating the screw-threaded socket 15 connected to the rod 16.
Patent GB-745855-A (GB)
Title: A combined saddle and pillion seat for motor cycles
Inventor: TERRY NORMAN VICTOR
IPC: B62J1/12
Filed: 1953-09-25
Abstract: 745,855. Combined saddle and pillion seats for motor-cycles. TERRY & SONS, Ltd., H. Sept. 13, 1954 [Sept. 25, 1953; Oct. 20, 1953], Nos. 26414/53 and 28885/53. Class 136 (3). A combined saddle and pillion seat for a motor-cycle comprises a main frame a, a<SP>1</SP> pivoted to the motor-cycle at a<SP>7</SP>, springs bl supporting the main frame at its rear from the motor-cycle, the springs being disposed beneath the pillion seat cantlebar a<SP>4</SP> and a series of coiled tension springs e extending from the peak d adjacent the frame pivot a<SP>7</SP> to a saddle cantlebar c and a second series of coiled tension springs f extending from the cantlebar c to the pillion seat cantlebar a<SP>4</SP>. The saddle cantlebar c is supported on compression springs c<SP>1</SP> themselves supported on angle plates a <SP>5</SP> attached to the side members a, a<SP>1</SP> of the pivotal frame. Additional springs may be attached to the frame at a<SP>6</SP> to reinforce the main supporting springs bl. The first and second Provisional Specifications describe a modification in which the cantlebar of the pillion seat is provided with a pair of downwardly directed pins which slide freely within the upper coils of a pair of compression springs connected at their lower ends to a framework fixed to the mudguard.
Patent GB-921424-A (GB)
Title: Process for the manufacture of 11ªá-hydroxy-17ªá-methyl testosterone
IPC: C12P33/00
Filed: 1959-07-31
Abstract: 11a - Hydroxy- 17a - methyltestosterone is obtained by subjecting 17a -methyltestosterone to the action of an enzyme of an 11a -oxygenating fungus, wherein an enzyme of the fungus Aspergillus ochraceus is used.  The fermentation may be effected under aerobic conditions and the product obtained by solvent extraction and/or chromatographic adsorption.  6a ,11a  - Dihydroxy - 17a  - methyltestosterone is obtained as a by-product.
Patent GB-770781-A (GB)
Title: Improvements in and relating to sea water cooling systems for steam condenser units of marine steam propulsion installations
Inventor: HOBSON ERIC DOTT
IPC: F01P3/20
Filed: 1954-09-13
Abstract: 770,781. Cooling water supply systems. YARROW & CO., Ltd., and ANDRE RUBBER CO., Ltd. Sept. 7, 1955 [Sept. 13, 1954], No. 26476/54. Class 113. In a means for controlling the circulation of sea water through the cooling system of a heat exchanger, steam condenser unit 1 or the like of a ship comprising an expansible or inflatable member 8 at the outer surface of the hull adjacent the outlet opening 6 of the system, the member 8 is adapted to be expanded or inflated to project outwardly of the hull to divert the sea water flowing past the hull away from said opening so as to create an area of reduced pressure at the opening. The member 8 in its collapsed or inoperative position shown in full lines in Fig. 3 lies substantially flush with the end of the opening 6 in a compartment 7 adjacent the opening. Liquid or gas may be introduced via an inlet 11 into the compartment 7 to extend the member 8 as desired, depending upon the rate of flow of sea water required through the system, up to the fully extended position 8a. The member 8 is positioned forwardly of the opening 6 so as to divert the flow of sea water when the ship is moving ahead but a similar member may be positioned rearwardly of the opening for use when the ship is moving astern. The compartment 7 is provided with a relief valve 13 to release pressure and ensure partial collapse of the expanded or inflated member 8 and thus avoid damage thereto on striking an obstruction.
Patent GB-1277089-A (GB)
Title: Interface transmitter
Inventor: ARMSTRONG DESMOND ROSS
IPC: H03K5/00
Filed: 1969-05-23
Abstract: 1277089 Computer interface transmitter MULLARD Ltd 23 May 1969 26507/69 Heading H3T A transistorized computer interface transmitter comprises an input long-tail pair phase splitter D.C. coupled to a long-tail pair output stage and means to cause the supply voltage for the loads of the phase splitter to follow variations relative to the earth rail of the emitter supply to the output stage. Variations in the earth rail voltage may thus be prevented from varying the biasing level of transistors. As shown, the input, which may be derived from a T.T.L. logic circuit, is applied via transistors TR1, TR2 and level shifter Z 1  to a long-tail pair phase splitter TR4, TR8, TR10, driving an output stage TR5, TR9, TR7 via an intermediate stage TR3, TR11 and level shifters Z2, Z5. The supply for the collectors of the phase splitter transistors is derived from the emitter of TR6, the base of which is held fixed in relation to the negative rail by diodes D8- D11 and Z7. The increase in saturation voltage of TR7 with temperature is allowed for as the resistors of the circuit have a positive temperature coefficient and the Zener diode voltages increase.
Patent GB-407411-A (GB)
Title: Improvements in and relating to regulating choke coils
IPC: H01F21/06
Filed: 1932-09-26
Abstract: 407,411. Inductances. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.-(Assignees of Allgemeine Elektricitats-Ges. ; 2, Friedrich Karl-Ufer, Berlin.) Sept. 26, 1932, No. 26703. Convention date, Sept. 25, 1931. [Class 37.] An auto-connected reactance with two windings S1, S2 on a fixed core K1, and a displaceable core K2, for on-load tap-changing in transformers, is provided with a cathode winding S3 on the displaceable core, the winding S3 being connected to the same voltage as the windings S1, S2. The winding S3 may have the same number of turns as the windings S1, S2, or it may have an increased number of turns, in which case compensation is provided by differential windings G1, G2, Fig. 7, connected in series with the windings S1, S2 respectively, the winding G2 being magnetically coupled with the winding S1, and G1 with S2. In another construction short-circuit windings or rings are provided on the displaceable core on each side of the control windings.
Patent GB-813801-A (GB)
Title: Improvements relating to martensitic stainless steels
IPC: C22C38/48
Filed: 1954-09-15
Abstract: Corrosion-resistant martensitic steels have compositions within the following range in per cent by weight: C plus N 0.03-0.15 (N not exceeding 0.05); Cr over 15 and up to 17.5; Ni 4-6.5; Cu 0.5-2.5; Mo 0.3-3.0; Si up to 1.0; Mn up to 1.0; one of the following carbide or nitride forming elements namely Nb (including any residual Ta) 8 to 12 times the C plus N content.  Ti 5 to 10 times the C plus N content.  V 5 to 10 times the C plus N content. Fe and incidental impurities the remainder.  The alloy may be subjected to a hardening and tempering treatment in the range 350-650 DEG C., e.g. for about 2 hours.  This treatment may be preceded by heating to about 1000 DEG C., air cooling and heating for about 2 hours at 750 DEG C. and air cooling, or heating to 1000 DEG C. and cooling at a rate not over 100 DEG C. per hour, or heating to 1000 DEG C., rapid cooling from that temperature, and cooling to -50 DEG C. to -80 DEG C. for about 2 hours.  The Provisional Specification describes also alloys containing Cr over 15 and up to 18, Ni 3-8, Mo 0.3-2.5, Mn up to 5, a carbide or nitride former in the range 0.3-1.3 the alloy being otherwise of the same composition.  Specification 782,172 is referred to.
Patent GB-921307-A (GB)
Title: Improvements in slow response electrical meters
IPC: G01R11/10
Filed: 1961-07-25
Abstract: 921,307. indicating-apparatus. L. A. MEDLAR. July 25, 1961 [July 26, 1960 (3)], No. 26870/61. Class 106 (4). [Also in Group XXXVI] A current maximum demand meter includes a damping component which is immersed in liquid preferably a silicone oil. In Fig. 4, the entire meter movement including the magnetic rotors 27, balancing discs 28 and a damping rotor 29 (see also Fig. 9) mounted in shaft 26 are housed in an oil-filled polythene casing 34. Rotors 27 are of nickel-iron alloy and discs 28 of brass. The rotors 27 are rotated due to a flux produced by a magnetic member 5 (Fig. 3), which surrounds a conductor 7 to which the meter is clamped, any rotation of shaft 26 being transmitted to pointer 3 mounted on a shaft 43 outside casing 34 by a magnetic coupling 32, 44, rotation taking place against a spring (Fig. 8, not shown). A maximum demand indication pointer 4 is secured to a shaft 48 frictionally restrained by a cord 50 and spring 51 has a finger 49 projecting into the path of pointer 3 on the up-scale side. The reset means 10 for pointer 4 includes a finger 70 biased to a normal up-scale position by a spring 71 and engaged by the tip 60 of a shaft 64 which is rotated by a knob 65 to reset pointer 4. In Fig. 10 the magnetic rotor and damping rotor are combined in a single magnetic paddle 91 while in a further embodiment (Fig. 11, not shown) the paddle is in two halves, one of magnetic and one of non-magnetic alloy. In a further embodiment (Figs. 12-14, not shown), the magnetic rotor is separate from the damping rotor and situated outside the oil-filled housing, the two shafts being coupled magnetically.
Patent GB-1463278-A (GB)
Title: Synthetic aircraft turbine oil
IPC: C10M169/00
Filed: 1975-06-25
Abstract: 1463278 Lubricants TEXACO DEVELOPMENT CORP 25 June 1975 26900/75 Heading C5F A lubricating oil for gas turbines comprises a major proportion of a synthetic ester base oil and minor proportions of four specified additives. The base oil is formed by the reaction of pentaerythritol, its dimer or oligomer, or trimethylolpropane and a monocarboxylic acid, which may be saturated aliphatic or aromatic. The additives are: (A) a thiouracil, a dithiouracil, or their amine salt, (B) alkylphenyl or alkyarylphenyl-alpha- or beta-naphthylamine, (C) a dialkyldiphenylamine, and (D) a trihydrocarbyl phosphate. Examples of each component are given.
Patent GB-187441-A (GB)
Title: Improvements relating to electricity measuring instruments
IPC: G01R11/02
Filed: 1921-10-11
Abstract: 187,441. Lucas, H., Danks, E. J. B., and Miller, O. A. Oct. 11, 1921. Electromagnetic current' meters.- An electric measuring - dnstrument, such as an ammeter, comprises a short bar magnet c secured to the main plate a of the instrument, a coil h of stiff wire adjustably secured alongside it, and an iron armature m located in or at one of the open ends of the coil and mounted on an arbor n carrying an index finger o. The bar magnet c is clipped at its ends and sides by tongues b, d pressed up from the rear side of the plate a, the front side being arranged as a scale. A metal bridge e, secured to the rear side of the plate a, carries a pair of terminal posts f, each provided with a transverse hole to receive the ends g of the coils h, which are adjustably secured between the heads i of the posts and washers j. To prevent rotation of the posts their heads are of square section, or one side may be made flat, to co-operate with the adjacent portion of the bridge e from which they are insulated by strips k and washers l. The instrument can be mounted in an iron case p.
Patent GB-1393741-A (GB)
Title: Injection moulding of plastics material
IPC: B29C45/13
Filed: 1972-06-09
Abstract: 1393741 Injection moulding apparatus R HANNING 9 June 1972 [14 June 1971] 26929/72 Heading B5A Injection moulding apparatus for making large surfaced articles comprises a single mixing and plasticizing unit 1 which feeds a plurality of injection cylinders 2a . . . 2d, supplying foamable moulding material to a single large mould 5. The plasticizing unit 1 is connected to the injection cylinders by a conduit system 3 including branches 31a ... 31d, each branch including a valve 44 and non-return valve 28. Injection may be simultaneous from all injection cylinders or in timed sequence. Each injection cylinder contains a piston 21 operated by a cylinder 22 and piston 23. Valves 42, 43 control the supply of pressure fluid through conduits 26, 27 to the cylinder 22. The injection nozzles 24 have valves 41a . . . 41d which open when a predetermined pressure is reached in the injection cylinder, as measured by a diaphragm pressure gauge 40.
Patent GB-272753-A (GB)
Title: Improvements in two-stroke internal combustion engines
IPC: F02B25/00
Filed: 1926-10-28
Abstract: 272,753. Scotts' Shipbuilding & Engineering Co., Ltd., and Rennie, A. Oct. 28, 1926. Driving - g e a r. - Exhaust ports 4 uncovered by the piston of a two-stroke engine are further controlled by a rotary valve 11, so timed that, when the piston, which for this purpose is made shorter than usual, uncovers the ports 4 by its lower end on the up-stroke, the exhaust is closed by the valve 11, and air admitted to the underside of the piston through the inlet ports 2 is retained in the closed lower end 8 of the cylinder and is compressed during the down-stroke of the piston, which is thereby cushioned. The valve 11 also serves to pievent the charge admitted at 2 above the piston, from escaping through the exhaust ports after scavenging is completed, during the up-stroke.
Patent GB-714026-A (GB)
Title: Suspension means for the trolleys or the like of overhead rail, chain, or wire rope ways, or similar devices
IPC: B61B12/02
Filed: 1952-10-28
Abstract: 714,026. Suspended vehicles. GES. FUER FORDERANLAGEN E. HECKEL. Oct. 28. 1952 [Oct. 31, 1951], No. 27026/52. Class 103(4) Roller carriages from which trolleys or load carriers of overhead rail, chain, wire ropeways or the like are suspended comprise two pairs of main balancing links provided at each end with one or more rollers and overlapped at one end in such a manner that the roller or rollers at the overlapped end of each pair of links operate between the rollers provided at the opposite ends of the other pair of links and the positional relationship of the links and rollers is maintained by the trolley or load suspension means to which the links are attached. The main balancing links 12, 14 are supported at their inner ends by rollers 6, 10 and are overlapped between pivots 3, 7 from which the load carrier 2 is hung. The outer ends of the links 12, 14 are pivotally attached to smaller balancing links 11, 13 supported by rollers 4, 5 and 8, 9.
Patent GB-325526-A (GB)
Title: Improvements in the manufacture and production of metallic powders suitable for the cores of magnets
IPC: H01F1/20
Filed: 1928-09-21
Abstract: 325,526. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). Sept. 21, 1928. Electromagnets. - Cores for electromagnets, Pupin coils &c. are made from a mixture of powdered metal, especially iron, prepared by the decomposition of metal carbonyl and treated with hydrogen at a high temperature as described in Specification 286,167, with untreated powder produced from carbonyls. Specification 124,658 also is referred to.
Patent GB-1389584-A (GB)
Title: Internal combustion engines having an electric starter motor
IPC: H02K41/025
Filed: 1972-06-09
Abstract: 1389584 Dynamo-electric machines REGIE NATIONALE DES USINES RENAULT and AUTOMOBILES PEUGEOT 9 June 1972 [11 June 1971] 27182/72 Addition to 1349533 Heading H2A In the combination of an I.C. engine and induction starter motor of the parent Specification 1,349,533, the motor rotor comprises an annular ferromagnetic body on which is mounted one or more elements of copper or aluminium disposed on the body so as to pass between the side portions of the yoke member when the rotor rotates. The rotor may be a ferromagnetic disc carrying a layer of copper or aluminium on one of its side faces. The disc may have a peripheral flange, in which case the layer of copper or aluminium may be disposed on the outer surface of the flange. The flange may have axially extending slots, in which case the copper or aluminium elements take the form of rods disposed in the slots and interconnected by end rings to form a squirrel cage.
Patent GB-1525711-A (GB)
Title: Desulphurisation catalysts
IPC: B01J37/30
Filed: 1975-06-27
Abstract: 1525711 Hydrodesulphurisation catalyst BRITISH PETROLEUM CO Ltd 26 May 1976 [27 June 1975] 27266/75 Heading B1E [Also in Division C5] A method for preparing a hydrodesulphurisation catalyst for hydrocarbons comprises the step of refluxing a substance comprising (a) 1-10% wt. of an iron group metal compound, (b) 5-25% wt of a Group VIA metal compound and (c) a refractory support with an aqueous solution of (d) an alkali or alkaline earth metal compound, a rare earth metal compound or a transition metal compound to give a content of (d) 0.1-15% wt. in the catalyst, all percentages being expressed as % wt. metal of total catalyst weight. The preparation of a catalyst containing Co, Mo and Mg is exemplified.