baber/WOPTO huggingface dataset:
Patent GB-1172555-A (GB)
Title: Improvements in or relating to Single-Tube Telescopic Dampers
IPC: B60G15/14
Filed: 1967-02-20
Abstract: 1,172,555. Hydropneumatic suspension struts. HOESCH A.G. 20 Feb., 1967 [26 Feb., 1966], No. 8025/67. Heading F2S. A single-tube telescopic hydropneumatic shock-absorber comprises a damping piston 10 which works in a cylinder 1 which has an axle spindle 2, a piston rod 3, which is slidable in a bearing 4 having a packing 5, and an intermediate, a cylindrical temperature and volume compensating chamber 6 which is divided by a separating member 7 into gas and liquid compartments 13, 12 respectively, the liquid compartment 12 communicating with the lower space 15 in the cylinder 1 by means of corresponding ports in the piston and in a lower neck of the body 6 and, by means of a one-way valve 14 which opens on an upward stroke of the rod 3, and a cylindrical part of the compensating chamber being so constructed in itself or, together with the piston-rod, as to exhibit at least the same resistance moment to bending as the piston-rod itself. The valve 14 and its loading spring are housed in a hollow nut 16 which secures the body 6 to the piston 10. In a modification, Fig. 2, not shown, the gas space (18) communicates with a hollow piston-rod (17) which is connectible to a pneumatic, or hydropneumatic, springing device so that the gas in the space 18 can be pressurized to partly, or fully, support the vehicle body. In all of the embodiments described a buffer 9 ring is mounted on top of chamber 6 around the pistonrod. In a further modification, Fig. 3, not shown, the ports in the piston (26) are controlled by distortable disc valves (28), (29) and oneway inlet and outlet valves (24, 25) are provided respectively in a valve plate (23) extending across the base of the compensating chamber (26), the gas (21) being contained within the bellows (7) and the liquid in the space (22) within the chamber (20). In this construction the separating bellows (7) may be omitted. In an alternative arrangement the valve ports in the piston (10), Fig. 5, not shown, are not controlled and a piston rod extension (33) extends through the chamber (6) and the piston (10) to receive the nut (16). The separating member (35) is of frusto-conical form being wider at the bottom. The base of the rod extension (33) is bored to provide communication between the lower cylinder space (15) and the space within the separating member. In another arrangement, Fig. 6, not shown, a hollow tube (43) of less expensive material than the extension (33), Fig. 5, not shown, replaces the latter and the separating member is a distortable cylindrical member.
Patent GB-1182432-A (GB)
Title: Valve suitable for Automatically Varying Vehicle Brake Pressures
IPC: B60T11/34
Filed: 1967-02-21
Abstract: 1,182,432. Brake - pressure proportioning valves. BERG MFG. (U.K.) Ltd. 21 Feb., 1967 [21 Feb., 1966], No. 8288/67. Heading F2F. The valve device is for controlling the brake air pressure applied to front axle vehicle brake cylinders through outlet 4, as a function of system pressure at an inlet 2 which is applied to the remainder of the brake system. The valve comprises a differential floating piston 6 exposed on larger and smaller areas respectively to inlet and outlet pressure, and carrying a double-ended spring-biased valve member 13 with faces 13a, 13b which obturate respectively a port 12 in the piston and an exhaust port 5. Up to a predetermined inlet pressure P1, Fig. 2 (not shown), the exhaust port 5 being closed, the outlet pressure is relatively reduced. Between this pressure P1 and a higher pressure P2, a lift valve 21 having a rear piston extension of smaller area than the valve, opens gradually to pressurize the differential area 11 of the main piston 13 through a passage 18 and the outlet pressure rises gradually to equal the inlet pressure at P2. Above the pressure P2 the inlet and outlet pressures remain equal. The chamber 16 of valve 21 is vented to the inlet through passages 23, 24 and a check valve 25 carried by the valve.
Patent GB-1355475-A (GB)
Title: Age-hardened nickel martensitic steel
IPC: C22C38/08
Filed: 1972-02-23
Abstract: 1355475 Steel compositions HITACHI Ltd 23 Feb 1972 [26 Feb 1971] 8294/72 HeadingC7A An age-hardenable martensitic steel comprises, in weight percent:- 18 to 26% nickel 0À15 to 0À35% aluminium 1À0 to 2À0% titanium 0À2 to 4À0% molybdenum, tungsten, chromium and / or vanadium optionally up to 1% niobium and up to 0À5% manganese, the balance being iron and impurities including not more than 0À03% carbon, 0À1% silicon, 0À01% each of phosphorus sulphur and nitrogen. The addition of molybdenum, tungsten, chromium and/or vanadium suppresses the formation of Ni 3 (Al, Ti) at the grain boundaries thus conferring greater ductility together with mechanical strength. Alloys containing around 20% nickel may be converted into martensite by cooling to room temperature after solution treatment, but alloys containing more than 23% nickel need to be cooled to at least -73‹C in order to convert the microstructure fully to martensite; alternatively after cooling to room temperature, the alloy is arranged at 600 to 750‹C for 1-20 hours. Age-hardening is preferably accomplished at 400 to 550‹C for 0À5 to 30 hours.
Patent GB-102335-A (GB)
Title: Improvements relating to Electric Meters or Relays.
IPC: G01R11/36
Filed: 1916-06-12
Abstract: 102,335. British Westinghouse Electric & Manufacturing Co., (Westing- house Electric & Manufacturing Co.). June 12, 1916. Electro-magnetic current meters.-An electric meter or relay of the induction type is connected with a transformer such that the induced pressure bears a decreasing ratio to the current in the main circuit, and so compensates for the increasing torque of the instrument. The effect in the case of a meter is to give a more even scale, and in the case of a relay to preserve the time-lag under heavy overload, and so enable a series of relays to operate selectively. As shown, the winding 44 of the driving-magnet of the meter is connected in shunt with one coil 39 and in series with an opposing coil 36 on the transformer, the core of which becomes magnetically saturated at a low current-value. An adjustable resistance 41 is inserted between sections of the coil 39, and the current may be supplied from an ordinary transformer 34. The. winding 5 of the relay magnet is similarly connected to coils 22, 24 on a highly magnetized core, and to an ordinary current transformer 19. An additional winding 32 on a third limb of the core may be connected through a resistance 33 to a pressure transformer 29 to cause the relay to operate.with a lower current in one direction than in the reverse direction. The driving-magnets are fitted with shading-rings 4, 49, and the disk armatures are controlled by springs 6, 48 and damping- magnets 9, 52. A piece of soft iron 1<a> on the relay disk is attracted by the magnet 9 as the contact-arm 7 approaches the contact-piece 8.
Patent GB-271829-A (GB)
Title: Improvements in hydraulic power transmission apparatus
IPC: F16H39/06
Filed: 1927-03-26
Abstract: 271,829. K³hn, W. May 25, 1926, [Convention date]. Speed-varying mechanism. - In apparatus comprising a pump and motor each of variable eccentricity, the adjustable elements are connected by means giving a degree of lost motion; means may also be provided for independently varying the pump eccentricity. The connecting means may comprise a rod 4, Fig. 1, screwed into the pump body 1, and having a flanged upper end received in a member 5 secured to the motor body. The independent adjustment of the pump is obtained by lifting the rod 4 by means of a cam 10, or rotating it by means of worm gear. The pump and motor may be arranged close together in a casing adapted to be secured to a machine to be driven. The pump body may have a cylindrical guided portion, hydraulically balanced by recesses 15, 15<1>, Fig. 3, and ducts 16, 16<1>, the motor may have two cylindrical guided portions, and a valve 17 may be opened when the motor is to be stopped. Another form is described, specially adapted for machinery having a reciprocating motion, and in which a cam operated from a reciprocating member controls the pump eccentricity in such a manner as to give a quick return.
Patent GB-1499052-A (GB)
Title: Zinc electroplating bath
IPC: C25D3/24
Filed: 1976-03-02
Abstract: 1499052 Bright Zn electro-plate JAPAN METAL FINISHING CO KK 2 March 1976 [8 March 1975] 08352/76 Heading C7B [Also in Division C3] A cyanide free alkaline Zn electro-plating bath contains a polyamine sulphone of Formula  wherein R 1  and R 2  are H, allyl, C 1-16  alkyl, aralkyl or -(CH 2 ) 1-6 OH; X is halogen, HSO 4 <SP>-</SP>, HSO 3 <SP>-</SP>, HCOO<SP>-</SP> or CH 3 COO<SP>-</SP> or when R 1  or R 2  are not H, an SO 3 <SP>-</SP> substituent on R 1  or R 2 ; n is an integer giving a number average MW of 2000-350000; and a and b are integers such that a:b = 10:10 to 100. An aromatic aldehyde may be added, e.g. one of the following derivations of benzaldehyde; o-, m-, or p-hydroxy, 3, 4-methylenedioxy, methoxy, 3, 4- dimethoxy or amino. A ZnO or ZnS bath with NaOH is specified. Usual plating conditions are used, the plate being optionally chromated to increase brightness.
Patent GB-589952-A (GB)
Title: Metal contact rectifier
IPC: H01L21/06
Filed: 1945-04-06
Abstract: 589,952. Asymmetrically-conducting resistances. STANDARD TELEPHONES & CABLES, Ltd. April 6, 1945, No. 8552. Convention date, April 24, 1944. [Class 37] A metal contact rectifier element 1 comprises a metal base plate 2 upon which is a semiconducting layer 3, e.g. of selenium, and a counter electrode 4, e.g. of Wood's metal, a mounting hole 5 passing through the complete unit. An insulating element 6 consisting of a thick flat disc is located in a restricted area between the semi-conducting layer 3 and the counter electrode 4 to cause that portion of the counter electrode overlying it to form a projection upwards arranged to make contact with a superposed rectifier element, shown dotted in Fig. 2. The insulating member 6 may consist of a plurality of layers 7 of an insulating lacquer or varnish, or any suitable insulating material, e.g. paper impregnated with an insulating synthetic resin such as polystyrene. The member 6 should be attached to the semiconducting layer 3 as by using an adhesive, or if it is of suitable material, e.g. polystyrene, it may be affixed by the application of heat. Specifications 526,482 and 570,722 are referred to.
Patent GB-558323-A (GB)
Title: Improvements in and relating to methods of producing solids of desired configuration, for example a smooth covering layer on the fluorescent screen of a television picture tube, or a mould for reproducing the shape of a snow flake
IPC: H01J29/28
Filed: 1942-06-23
Abstract: 558,323. Coating with metals. BRITISH THOMSON-HOUSTON Co., Ltd., June 23, 1942, No. 8603. Convention date, June 27, 1941. [Class 82(ii)] [Also in Groups V, III and XL] A method of producing a solid having a desired physical configuration comprises (a) preparing a solution of a solidiflable material, e.g. artificial resin or cellulose derivative, in a volatile solvent, (b) flowing the solution over a forming member which possesses a surface conforming to the desired configuration and which consists of a substance, e.g. water having both solid and vapour phases in a range of temperatures throughout which the resin &c. can exist as a solid, the water &c. being maintained as ice &c. during the flowing operation, (c) evaporating the solvent from the resin &c. to cause solidification of the latter, and (d) finally raising the temperaure of the ice &c. to cause its evaporation. The invention is described in connection with (1) coating the fluorescent screen 21 of a television picture tube with resin &c. 26, a thin deposit 27 of a highly reflecting metal such as silver or aluminium being then applied to the resin, as by an evaporating process, for the purpose of preventing light and secondary electrons generated in the screen from being projected back into the tube, and (2) making a permanent mould of a fragile crystalline substance such as a snowflake. (1):- The tube 20, having the screen 21 on the inside thereof, is placed in contact with a plate 22 cooled by refrigerant passing through ducts 23. Water vapour is introduced through a nozzle 24, condenses in the spaces between the granules of the screen, and freezes. forming a smooth surface of ice. Resin &c. solution is then applied to the ice, as by spraying, and allowed to set by evaporation of the solvent (the tube wall still being kept cool). The temperature of the assembly is then slowly raised, whereupon the ice melts and its vapour passes through the resin. Finally the metal is applied. (2). A snowflake 30 is deposited on a pre-cooled surface 31 and covered with a drop of resin solution 32. The solvent in the drop is allowed to evaporate, and the whole is heated to cause evaporation of the water of the snowflake. Instead of water, benzene, acetone or alcohol may be used. The fluorescent material may be willemite. The resin may be a polyvinyl resin, e.g. polyvinyl halide, the co-polymer of vinyl chloride and vinyl acetate, or the reaction product of an aldehyde with a hydrolysed polymerized vinyl ester (i.e. a "polyvinylal" resin). The cellulose derivative may be nitrocellulose or cellulose acetate.
Patent GB-550566-A (GB)
Title: Improvements in automatic frequency control
IPC: H03J7/04
Filed: 1941-07-11
Abstract: 550,566. Generating high-frequency oscillations; automatic tuning correction. STANDARD TELEPHONES & CABLES, Ltd., and EARP, C. W. July 11, 1941, No. 8783. [Class 40 (v)] A frequency control arrangement for an oscillator O, Fig. 1, comprises a frequency discriminator D supplying an output control voltage to a frequency determining element FV of the oscillator, the characteristic curves of-the discriminator D and the element FV being substantially identical. The Specification states that this results in the generator remaining stable at any frequency to which it has been set. An external voltage CV, however, applied to the element FV brings about a cumulative change of frequency, which persists as long as the voltage is applied, the rate of change being dependent on the value of the voltage. When the voltage is withdrawn, the frequency remains at its new value. The frequency control element FV may be a valve operating by the Millar effect. Fig. 4 shows a superheterodyne receiver with its local oscillator regulated in this manner. The oscillator is of the kind in which a pair of modulators M1, M, are connected through filters F1, F2 in a loop circuit, an oscillation from O being applied directly to modulator M2 and through a phase-changer PC to the modulator M,. The output frequency taken from F1 or F2 is varied by control voltages applied to the phase-changer PC, and derived in part from a discriminator D fed from the filter F2. The output is fed to the frequency-changer FC of the superheterodyne receiver. To eliminate effects due to frequency drift in the incoming wave, a discriminator D, is fed from the IF amplifier IFA, and its output voltage is fed to the phase-changer PC in series with the output of the discriminator D. A rectifier bridge R is included in this series circuit and the time constant of this resistance R and the shunt condenser C is varied according to the received 'signal strength, giving quick control when signals are present and slow control during interruptions or fading, as described in Specification 550,567.
Patent GB-1293602-A (GB)
Title: Improvements in or relating to torque transmitter devices
Inventor: BLAKE JOHN BERCHMAN
IPC: G01L3/14
Filed: 1969-02-18
Abstract: 1293602 Positive clutches ALLSPEEDS HOLDINGS Ltd 18 Feb 1970 [18 Feb 1969] 8807/69 Heading F2C [Also in Division G1] Torque is transmitted from a drive shaft 13 to a driven shaft 31 by rollers 28 mounted on shaft 13 and engaging depressions in a cam track 36 mounted on shaft 31 (cf. Fig. 2). The rollers 28 are mounted on pistons 23 moving in hydraulic cylinders 20 connected up in a fluid circuit comprising ducts 40, annulus 43 which is spring loaded against annulus 47 carried by the housing 9, annular duct 48 and exit duct 49. To provide a clutch action, the device shown in Fig. 8 comprising a piston 94 moving in a cylinder 93 is connected in the hydraulic circuit between exit duct 49 and pressure gauge 50. If the piston 93 is pushed into the cylinder 94, the rollers 28 are held in engagement with the cam track depressions. If the piston 94 is withdrawn from cylinder 93, the rollers 28 are able to travel around cam track 36 without transmitting torque. To provide a torque limiting action, the device shown in Fig. 7 is connected to exit duct 49. The device comprises a metal bellows 108 connected to the duct alone end, and connected to a piston 109 at the other. The piston 109 is resiliently urged against stop 110 by a spring 112 whose force may be varied by nut device 111. When the torque is sufficient to produce a large enough fluid pressure to expand the bellows against the spring, the rollers follow the cam track without transmission of further torque. Instead of being radially disposed, the cylinders may be arranged axially in the assembly 19 (Fig. 4, not shown), a thrust bearing 89 connecting the driven shaft 31 to the assembly 19 being then provided. In an alternative embodiment (Fig. 6, not shown) the drive shaft 13 extends through the clutch and the driven shaft is mounted coaxially around the drive shaft. The piston 94 (Fig. 8) may be operated by a lever or pedal, possibly through a reduction gear. When drive is being transmitted, the pressure recorded on gauge 50 is a measure of the torque.
Patent GB-231003-A (GB)
Title: An improvement in heat exchangers
IPC: F28D9/00
Filed: 1924-04-08
Abstract: 231,003. Adams, S. C. April 8, 1924. Plate apparatus.-Each unit of the exchanger comprises a frame A having a sheet C of material of low conductivity in contact with three sides, a U-shaped sheet B of thin metal extending round the sheet C, and ports D, D1 in the frame communicating with the interior of the sheet B above and below the sheet C. Between adjacent units a sheet F of low-conductivity is fitted so as to leave a communicating passage. Cover plates G, H, enclose the outer elements, each provided with ports communicating with the spaces inside and outside the thin sheet B for the passage of the heat exchanging fluids. Grooves I, I1. for packing, and channels J opening to the exterior are made in the frames for preventing intermingling of the fluids.
Patent GB-139057-A (GB)
Title: Improvements relating to gas cooking stoves
IPC: F24C3/02
Filed: 1919-04-08
Abstract: 139,057. Lea, F. M., and Lea, D. H. April 8, 1919. Gas cooking-stoves.-An oven b enclosed in an outer casing so as to leave flue spaces c is traversed by a vertical " expansion pipe " d located above one or more atmospheric burners f which are contained in a chamber e beneath the oven. The products of combustion pass through the pipe d and the flues c, which are located over and at one or more sides of the oven, to an outlet h at or near the burner level. The air-supply pipe g may pass through the outlet pipe h to pre-heat the air.
Patent GB-1460848-A (GB)
Title: Process for making a niobium alloy superconductor composite wire
IPC: H01B12/10
Filed: 1974-02-27
Abstract: 1460848 Superconductors MITSUBISHI DENKI KK 27 Feb 1974 [27 Feb 1973] 9002/74 Heading H1A [Also in Divisions B3 and C7] A Nb 3 Sn (or Nb 3 Ga or Nb 3 Al) superconductor wire is made by drawing a composite comprising rods of niobium or niobium alloy and tin (or gallium or aluminium) or tin-copper alloy (or gallium-copper or aluminium-copper alloy) separated by copper; and then heat treating the drum composite to cause the tin (or gallium or aluminium) to diffuse through the copper and to react with the niobium to form Nb 3 Sn (or Nb 3 Ga or Nb 3 Al). In one embodiment, copper coated niobium rods 1 Fig. 1a, or niobium alloys containing zirconium or vanadium are positioned between a copper coated tin or tin-copper alloy rod 3 and a copper tube 4 which is drawn to produce a composite wire having a diameter of 0À1-0À25 mm. After coating the drawn wire with alumina or magnesia, it is heated at 650-1000 C. in an inert atmosphere to cause the tin to react with the niobium to form a Nb 3 Sn layer 6, Fig. 1b, of 7 Ám. thickness on each niobium rod 1 which has a diameter of 20 Ám. The strength of the composite wire may be increased by heating it at 350-520 C. In another embodiment (Fig. 2, not shown) the starting material comprises a copper rod (7) having a central hole (8) which has been filled with molten tin (9) and surrounding holes (8) containing niobium rods (1). In a further embodiment (Fig. 3, not shown) the starting material comprises copper coated Sn-Cu rods (3) positioned between a matrix of copper (2) containing niobium rods (1) and a tube (10) made of V, Nb, Ta, Ti or Zr. The tube (10) is coated with copper (11).
Patent GB-658411-A (GB)
Title: Improvements in or relating to a process of obtaining a vitamin a concentrate from vitamin-containing fish liver oils
IPC: A61K31/59
Filed: 1946-03-25
Abstract: Vitamin A concentrates are obtained from fish liver oils of relatively low vitamin A content by contacting the oil in countercurrent flow with an organic polar solvent which at low temperatures is not completely miscible with the oil, in a ratio of about 4-20 parts of solvent to one of oil at a temperature below that at which the solvent exhibits complete miscibility with the oil and at which about 20 per cent of the oil is extracted, and evaporating off the solvent to obtain the concentrate containing substantially more vitamin A than the original oil.  In a modified process the oil is contacted with the solvent in two stages, the first stage being conducted at a temperature at which 50 per cent of the oil is extracted, followed by a further extraction at a temperature at which 15 per cent of the oil is extracted into the polar solvent.  Suitable solvents are : hydroxy compounds including alcohols, glycols, hydroxy esters, hydroxy ketones, hydroxy ethers and unsaturated hydroxy compounds; carboxylic acids and their anhydrides; esters, carboxy esters, ether esters, imido esters and unsaturated esters; aldehydes; ketones and diketones; amides and amines; organic carbonates and phosphates; nitro-paraffins; nitriles.  Furfural is particularly suitable.  In a preferred method of performing the extraction the oil, e.g. dog-fish liver oil, is fed into a long vertical column (preferably 50 feet or more) at an intermediate position along its length and the solvent is introduced near the top.  The vitamin impoverished raffinate is drawn off at the top of the column where it is stripped of solvent and may then be stored or passed to another column for further extraction.  The vitamin containing solvent phase is drawn off at the base of the first column and is stripped of solvent to give the vitamin concentrate.  This extract p  may be further concentrated either by returning it to a point near the base of the column, or by extracting the vitamin into water followed by molecular distillation.  Specifications 475,070, 515,468, 2690/43 and 18137/47 (both open to inspection under Sect. 91), are referred to.
Patent GB-822492-A (GB)
Title: Process for producing metal alloys of low impurity content
IPC: C21C7/00
Filed: 1956-03-23
Abstract: Metal alloys, and particularly ferrosilicon, are refined by processing them in an acid-lined open-arc electric furnace with a molten slag containing at least 50% of silica.  In its application to the treatment of ferro-silicon a slag composed of silica and lime may be used.  Fluorspar may be added to control the fluidity of the slag. Alakali metal salts may also be added and may replace the lime wholly or in part.  Molten ferro-silicon may be transferred from a submerged-arc furnace to the open-arc furnace and agitated therein, e.g. by poling.  Before casting the alloy, with slag, may be further agitated by pouring from one ladle to another.  By this treatment ferro-silicon containing at least 14% silicon may be produced containing not more than 0.5% impurities including 0.05% or less of aluminium.