baber/WOPTO huggingface dataset:
Patent GB-1100057-A (GB)
Title: Improvements relating to suction cleaners
IPC: A47L9/00
Filed: 1965-08-04
Abstract: 1,100,057. Valves. HOOVER Ltd. 4 Aug., 1965 [5 Aug., 1964], No. 33389/65. Addition to 1,049,605. Heading F2V. [Also in Division A4] The suction cleaner forming the subject of the parent Specification is modified in that the valve enabling the filter inlet to be connected solely to the main nozzle, or solely to the hose port, or simultaneously to both the main nozzle and the hose port, is capable of partially connecting the filter inlet to the hose port without restricting the passage for air from the main nozzle to the filter inlet. The rotary cylindrical valve plug 56 has a passage 60 therethrough defined by a divergent V-shaped wall 58 of sufficient circumferential extent to span the whole of the port 48 leading to the main nozzle (not shown) and at the same time part of the port 52 leading to the hose port 37. The wall 58 may also span the whole of the port 52 and at the same time part only of the port 48.
Patent GB-601572-A (GB)
Title: Improvements in and relating to insulating and dielectric compositions
IPC: H01B3/24
Filed: 1945-12-12
Abstract: 601,572. Insulation. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 12, 1945, No. 33656. Convention date, Dec. 18, 1944. [Class 36] The deleterious effect on surrounding materials of the decomposition products of a halogenated hydrocarbon dielectric is inhibited by incorporating one-half to five per cent by weight of a metal salt of an organic acid. The dielectric may be hexachlor-diphenyl and trichlorbenzene. The acid radical may be chosen from aromatic, fatty, hydroxy-fatty and cycloparaffinic acids, and any suitable metal may be used. Examples given are the oleates of sodium, copper or lead, the benzoates of sodium or zinc, the stearates of sodium, aluminium or zinc, and the naphthenates of copper, zinc or tin.
Patent GB-917868-A (GB)
Title: Improvements in polymer production
Inventor: ERREDE LOUIS ANTHONY
IPC: C08G61/00
Filed: 1959-10-05
Abstract: Aromatically unsaturated polymers are pro-produced by polymerizing a quinodimethane in solution at a temperature maintained between -150 DEG  and -45 DEG C., the quinodimethane being an alicyclic compound containing a doubly unsaturated six membered ring to which two methylene groups are each doubly bonded.  Such compounds are obtained by the pyrolysis of carbocyclic and heterocyclic compounds, for example by the methods described in Specification 768,662.  Specified quinodimethanes are 1,4-quinodimethane(p-xylylene, 1,2-quinodimethane, 1,4-naphthoquinodimethane, 1,2-naphthoquinodimethane and pseudo-cumylene, which may be polymerized alone, or in admixture with one another or with inorganic comonomers, e.g. sulphur oxides, oxygen, phosphorus halides and phosphine.  The polymerization is carried out in a solvent such as an aliphatic or aromatic hydrocarbon, halogenated hydrocarbons, ketones, alcohols and ethers; preferred solvents are toluene and hexane. Polymerization may be terminated at incomplete conversion.
Patent GB-332852-A (GB)
Title: Improvements in protective devices for electric machines working under a liquid
IPC: H02K5/132
Filed: 1929-11-06
Abstract: 332,852. Siemens - Schuckertwerke Akt.-Ges. Nov. 7, 1928, [Convention date ] Casings.-An electro-motor and other apparatus operating under water, e.g. in a diving bell, is protected by a float-operated switch which, when the water reaches the highest permissible level, controls and brings into operation compressed-air supply devices. Fig. 1 shows a borehole 1 into which is lowered a motor 2 and pump 3 connected by a diving-bell 4, the air in which prevents the liquid 5 in the borehole from passing through the passage of the shaft 6 into the motor 2. In the bell 4 is a float 11 rotatably mounted on a spindle 10 and containing a mercury switch 13, Fig. 2, with contacts 14, 15, the former connected by a lead 17 to the casing, the latter to a wire 20 in the compressedair pipe 19, or in the cable 23, which may also include the pipe 19. The conductor 20 passes through the low-tension winding 25 of a small transformer 25, 26, a relay coil 27, and switch 28, to the pipe 19. The switch 28, and also an adjacent switch 30, are controlled by the relay armature 29, so that when the water level rises and the mercury switch 13 completes the circuit, the relay 31 lifts the pawl 32. and the spindle 35 is rotated by clockwork 36. The switch drum 34 then completes the circuits through the motor 40 which drives a compressor 41 supplying air through the pipe 19 to the bell 4. The revolution of the spindle 35 stops the supply of air until the water rises again. If the installation contains a compressed-air tank 44, Fig. 3, leading to the pipe 19, the valve 43 may be operated by an armature 45 of the relay 46 in the circuit 20.
Patent GB-931606-A (GB)
Title: Improvements in and relating to means for correcting or imparting cyclic variations in angular position of or to a rotating shaft or the like
Inventor: WALLIS DOUGLAS EDWARD
IPC: F16H35/02
Filed: 1960-10-03
Abstract: 931,606. Linkwork conveying rotary motion. SIR HOWARD GRUBB PARSONS & CO. Ltd. Sept. 19, 1961 [Oct. 3, 1960], No. 33887/60. Class 80 (3). In order to provide an adjustable cyclicallyvarying drive between coaxial shafts 1, 2, an intermediate member 3, mounted for rotation about an adjustable axis parallel to the shaft axis, has pin and slot connections 6 with flanges on the respective shafts, the two pins 6 lying at different radial distances from the axis of member 3. The member 3 is supported for rotation by four rollers 7a . . . 7d whose positions may be adjusted by screws 8 to vary the eccentricity of the member 3, and hence adjust the cyclically varying drive. As shown the member 3 carries two pins engaging slots in the two flanges. Alternatively there may be a pin on each flange engaging a slot on the member 3, or a pin on one flange and a slot on the other respectively engaging a slot and a pin on the member 3. The coupling may be incorporated in a worm or other drive (not shown) and be adjusted to compensate for the cyclic variation produced by inaccuracies in the gearing, or in the bearings thereof, so that the final output has a uniform rotation.
Patent GB-822867-A (GB)
Title: Improvements in or relating to the production of ammonia
IPC: C01C1/04
Filed: 1957-10-30
Abstract: Ammonia is synthesized by contacting hydrogen and nitrogen in the presence of a catalyst prepared by heating a transition metal oxide with an alkali metal at 450 DEG  to 600 DEG  C. in an inert atmosphere.  The transition metal oxide is preferably an oxide of molybdenum, vanadium, chromium, cobalt or iron, but may be an oxide of scandium, yttrium, lanthanum, titanium, zirconium, hafnium, niobium, tantalum, tungsten, manganese, nickel, ruthenium, rhodium, platinum, palladium, osnium, or iridium.  The alkali metal is present in an amount of at least 1%, preferably 5 to 300%, by weight of the oxide.  The catalyst is prepared by mixing the oxide with the alkali metal and heating, or by impregnating a carrier, such as alumina, with a salt of the transition metal, converting it to the oxide, and distilling the alkali metal through the carrier while it is heated. The nitrogen and hydrogen are contacted with the catalyst at 200 DEG to 450 DEG  C. at a pressure of 100 to 600 atmospheres for 0.02 to 100 seconds.  In examples nitrogen and hydrogen are contacted with catalysts prepared from molybdenum trioxide, vanadium pentoxide, chromium trioxide, cobalt, oxide, iron oxide and sodium potassium and lithium.  Specification 552,053 is referred to.
Patent GB-802084-A (GB)
Title: Improvements relating to load handling tongs
IPC: B66C1/32
Filed: 1955-11-28
Abstract: 802,084. Lifting tongs. HEPPENSTALL CO. Nov. 28, 1955 [July 11, 1955], No. 34014/55. Classes 78 (2) and 78 (4). The lifting arms 63, 65, Fig. 5, of a lifting tong are moved through a linkage 54, 55, 58, 59, 67, 68 by vertical movement of a cross head 18 carried by spaced guides 13. In the construction illustrated the crosshead 18 is carried by slides 17 sliding on the guides 13 and is raised and lowered by a pair of chains 28 passed round sprockets 24 on the shaft 21 and sprockets 25 on a lower shaft 26. The shaft 21 is turned by a chain 19, Fig. 4, and chain wheel 20 through gearing and an irreversible coupling. The coupling includes a yoke 46, Fig. 8, which can transmit drives in either direction to a block 49 carried by a plate 50 fast on the shaft 21. A floating brake band 47 normally engages a drum 53 to prevent the block 49 from moving but is pulled inwardly by the yoke 46 as it turns to engage the block 49. An external contracting brake band may be employed in place of the internal expanding brake band illustrated. Counter balances (not shown) sliding within the guides 13 may be connected by a pulley 78, Fig. 4, passing over suitably disposed pulleys to the crosshead 18. In an alternative construction the chains 28 raising and lowering the crosshead 18 may be replaced by a screw driven by an electric motor carried by the frame of the tongs. The lifting arms 63 may be joined by rails 71, 72 or, in a construction for engaging inside a coil resting with its axis horizontal, the linkages carrying the lifting arms 63 and the lifting arms themselves may converge to provide on each side of the tongs a single member for engaging within the coil. An arcuate saddle carried by the frame of the tongs may guide the tongs into correct relation with the coil. The middle portions of a stack of plates supported by the tongs illustrated may be held against sagging by shoes 82, Fig. 4, suspended from cables 86 which are passed to spring drums 88 by which the cables are normally retracted. Extension of the cable 86 is normally prevented by a ratchet mechanism which can be released by pulling a control wire. The shoes 82, when not in use, are retained by pins 85 on brackets 84 as shown to the right of Fig. 4.
Patent GB-1523607-A (GB)
Title: Method and apparatus for analysing gaseous mixtures
IPC: G01N27/00
Filed: 1975-08-15
Abstract: 1523607 Gas analysis EXXON RESEARCH & ENG CO 15 Aug 1975 [20 Sept 1974] 34038/75 Heading G1B A gaseous mixture for example of vinyl chloride in air is analyzed by a method comprising exposing a stream of the gaseous mixture to ultraviolet radiation to decompose one or more components of the mixture, if necessary after first removing any interfering components from the stream, absorbing the decomposition products in a liquid absorbent and measuring the consequential change in electrical conductivity of the absorbent, or alternatively removing the decomposition products from the stream, absorbing other components from the stream in a liquid absorbent and measuring the change in electrical conductivity of the liquid absorbent.
Patent GB-1474964-A (GB)
Title: Driven plates for friction clutches
IPC: F16D13/64
Filed: 1975-07-29
Abstract: 1474964 Friction clutch plates AUTOMOTIVE PRODUCTS Ltd 29 July 1975 [1 Aug 1974] 34045/74 Heading F2U A driven plate for a friction clutch comprises an annular disc 11 of resiliently deformable material having an outer portion 12 to carry friction facings 14, an inner portion 15 foi connection to a shaft and an intermediate portion formed with windows 17, 19 to allow flexing under torsional loading of the plate, at least some of the windows (19) having opposite peripheral portions which contact one with the other during flexing to increase the resistance to further flexing. The disc 11 may be made of glass filled nylon and riveted to spring steel segments 13, the hub portion 16 being made of metal if desired. Over a first range of torsional deflection the slots 19 assist the flexing. Under large deflections the slots 19 close up and one side of each slot slides over the other to give friction damping and a higher torsional stiffness to the plate. The spokes 18 formed by the windows need not be straight, Figs. 3 to 11 (not shown), and opposite peripheral portions of windows after contact may slide over one another, be deflected to provide additional stiffness and come into abutment such as to provide further stiffness.
Patent GB-1480465-A (GB)
Title: Shaft seal
IPC: F16C33/78
Filed: 1975-08-15
Abstract: 1480465 Shaft seals FEDERAL-MOGUL CORP 15 Aug 1975 [16 Sept 1974] 34067/75 Heading F2B  The casing 11 of a shaft lip seal is formed with outwardly bent lugs 18 enclosed in elastomer so that, on press-fitting the seal into housing 31, the elastomer 27 is squeezed outwardly into recess 33, by the resilient action of the cylindrical wall of the casing. The circumferential spacing between each pair of lugs is greater than the width of the lug. The resilient action provides a degree of retention which withstands the force transmitted from the shaft by the engagement of multiple sealing lips (23-25, Figs. 4 and 5, not shown) therewith.
Patent GB-1278740-A (GB)
Title: Cooling water ducting in reciprocating-piston internal combustion engines
IPC: F01P11/02
Filed: 1970-07-14
Abstract: 1278740 Cooling I C engine cylinders DAIMLER-BENZ A G 14 July 1970 [22 July 1969] 34135/70 Addition to 1234311 Heading F1B The cooling water outlets of the cylinder heads of a vertical, in-line I. C. engine are connected to a common manifold 4 via passages 6 in the block 1, and the cooling chambers in the heads are provided with vents 11 at their highest points. The vents which are connected to a common vent pipe 14, avoid air being trapped during filling of the engine with coolant, and allow escape of steam during engine operation.
Patent GB-834103-A (GB)
Title: Improvements in electrical regulator devices
IPC: H02J7/24
Filed: 1957-11-01
Abstract: 834,103. Automatic voltage control systems. FORD MOTOR CO. Ltd. Nov. 1, 1957 [Nov. 1, 1956], No. 34194/57. Class 38 (4). The field of a generator is controlled by a transistor in. accordance with the output voltage and current of the generator. The field 45 of a D.C. generator 44 is shunt excited through a transistor 13 which is controlled via an emitter follower transistor 17 by two common emitter transistor amplifiers 23, 27 which share a common collector resistor 22. The transistor 23 is controlled in accordance with the load current as measured across resistor 35, and transistor 27 is controlled in accordance with the difference between the output voltage of the generator as tapped off a potential divider 34 and a reference voltage across a Zener diode 32. In a modification, Fig. 2 (not shown), the transistor 13 is inserted in the negative field lead. In another modification, Fig. 3 (not shown), the D.C. generator is replaced by an alternator which supplies the field and D.C. load over a bridge rectifier.
Patent GB-1111918-A (GB)
Title: Movable-magnet switch
IPC: H01H36/00
Filed: 1966-07-29
Abstract: 1,111,918. Movable magnet switches. INTERNATIONAL STANDARD ELECTRIC CORPORATION. 29 July, 1966 [30 July, 1965], No. 34207/66. Heading H1N. A magnetic switch having a ball contact armature movable between pairs 2, 2 and 3, 3 of fixed contacts in a sealed enclosure 1 as described in Specification 983,615, is operated when a permanent magnet 5 is moved between positions MO and MU and the tendency of the armature to be retained by holding flux is overcome by additional permanent magnets 7, 8 movable with the magnet 5. The annular magnets 5, 7, 8 are magnetized in the same direction and are carried by a sleeve 9 which may be attached to the key of a telephone subscriber's instrument. The provision of magnets 7, 8 allows a magnetic shield 6 to be used without diversion of operating flux from the armature. A plurality of these switches may be used in a push-button key set.
Patent GB-875640-A (GB)
Title: Control system for arc furnace
IPC: H05B7/156
Filed: 1958-10-27
Abstract: 875,640. Automatic control systems for electric arc furnaces. McGRAW-EDISON CO. Oct. 27, 1958 [July 1, 1958], No. 34332/58. Class 38 (4). [Also in Group XXIX] In an electric arc furnace 12 the electrodes 16 are positioned by a fluid servomotor 26 which is controlled by a combined valve and hydraulic amplifier 38 the operative members of which comprise two differentially wound coils 51, 52 to which are applied voltages proportional to the arc current and voltage respectively. The coil 51 is supplied by a current transformer 51 by way of a bridge rectifier 54 and a switch 113A in the " AUTO " position, a variable resistor 87 being supplied for adjustment of the electrode current. The coil 52 is supplied by a secondary winding 9A of a transformer 57 by way of a bridge rectifier 59 and a switch 113B in the " AUTO " position, a variable resistor 97 being supplied for adjustment of the voltage across the arc. Thus should the arc conditions depart from desired values and unbalance the coils 51, 52 fluid from a pump 41 will be directed to the top or bottom of the cylinder 28 of the servomotor 26 to move the piston 29 in the required direction to move the electrode 16 in such a manner to restore the desired arc conditions. Circuits in parallel with the coils 51, 52 are provided whereby the sensitivity of the controlling device 38 under " melt " and "refine" operation of the furnace may be controlled thereby overcoming tendencies of the apparatus to hunt. A relay 89 is provided which operates when a " cave-in " of the charge against the electrode 16 occurs so that a rapid withdrawal of the electrode from the charge takes place. The change-over switch 113 provides for alternative manual control of the position of the electrodes, individual electrode control being obtained by means of switches 114, 115 whilst group control of all the electrodes is obtained by means of switches 114, 116. Capacitors 122 are provided to introduce a time delay in the manual signals to prevent instantaneous response of the valve 38.
Patent GB-833196-A (GB)
Title: Improvements relating to the production of polyamide articles
IPC: C08G69/02
Filed: 1958-10-27
Abstract: Articles are made by shaping, by the vacuum deep-drawing process, polyamides formed to the extent of at least 95% by weight by condensation of unitary polyamide-forming substances and having a molecular weight of 40,000 to 100,000.  The preferred moulding material is polycaprolactam which contains as a hardening agent up to 5% by weight of e -aminocaprylic acid or of e -capryl lactam. The examples describe the manufacture of trays of polycaprolactam and of polyhexamethylene adipamide.
Patent GB-344085-A (GB)
Abstract: 344,085. Two-stroke-cycle engines. VINCENT, H., 80, Burton Road, FIRTH, E. L., 83, Burton Road, and BELL, W. T., Globe Works, Canwick Road, both in Lincoln. Dec. 7, 1929, No. 37640. [Class 7 (ii).] Piston pumps. -A pump 6 supplies mixture or air to the power cylinder 1 through a passage 7 in the pump piston and transfer passage 19; the delivery continues after closure of the exhaust ports 17 by the power piston. The exhaust ports open before the pump begins to deliver. Air is drawn into the pump through the terminal port 21. Water may be injected into the cylinder. Driving gear.-The pump piston is driven off the main connecting rod 3 through links 11, 12 ; a radius arm 14 is pivoted on the crank case and attached to the link 11.
Patent GB-1158195-A (GB)
Title: Process for obtaining a Low Biuret Urea
IPC: C07C273/04
Filed: 1967-07-26
Abstract: 1,158,195. Reducing the biuret content of urea. SNAM PROGETTI S.p.A. 26 July, 1967 [27 July, 1966], No. 34473/67. Heading C2C. A process for converting into urea at least part of the biuret content of a solution of urea, produced by the decomposition of ammonium carbamate in a decomposition chamber, comprises separating some of the urea from the solution of urea, recirculating at least some mother liquor having a reduced urea content and containing unconverted biuret to the decomposition chamber, and introducing into the decomposition chamber in counterflow to the urea solution and to said mother liquor substantially pure gaseous ammonia at a temperature of 170-220‹ C. and a pressure of 50-300 kg./cm.<SP>2</SP>, whereby at least some of the biuret is converted into urea and hence the solution of urea in the effluent from the decomposition chamber has a lower biuret content than would otherwise be the case. Urea may be crystallized from the solution of urea produced in the decomposition chamber, and after separating the resultant crystals, at least some of the mother liquor may be introduced into the decomposition chamber; the resulting urea crystals may be washed with water which is then added to the separated mother liquor. The ammonium carbamate which is utilized may be that obtained by the reaction of gaseous ammonia and gaseous carbon dioxide.
Patent GB-862033-A (GB)
Title: Improvements in or relating to extensible hydraulic supports
IPC: E21D15/44
Filed: 1958-10-29
Abstract: 862,033. Hydraulic pit props. MASTABAR MINING EQUIPMENT CO. Ltd., TEBB, B., and PERRY, C. H. Sept. 22, 1959 [Oct. 29, 1958], No. 34603/58. Class 20(2) In a hydraulic prop comprising an outer base cylinder 10, an inner ram tube 12, and relief and release valves 34, 36 in a removable head piece 32, the valves communicate with the cylinder through a tube 42 which is fixed at one end and movably jointed at the other. The tube 42 may be slidable on a short tube 54 mounted in the headpiece or it may be connected thereto by flexible tubing. The prop is extended by a reciprocating piston 22 connected, to a rotary driving member 28. The ball release valve 36 is operated by a lever 50 rocked by outward movement of the pump driving member 28.
Patent GB-467209-A (GB)
Title: Improvements in or relating to the manufacture of caustic soda
IPC: C01D1/20
Filed: 1935-12-13
Abstract: Alkali metal hydroxides or solutions thereof are obtained by reacting an alkali metal chloride with barium hydroxide in an aqueous medium at a temperature above 40 DEG  C. preferably between 50 and 100 DEG C., to form solid basic barium chloride which is removed from the reaction mixture.  The reaction may be effected in an aqueous alcoholic medium, e.g. a methanol-water mixture, or in an aqueous ammoniacal medium.  The lower part of the temperature range is most suitable for the production of sodium hydroxide and the upper part for the production of potassium hydroxide.  The mother liquor after the removal of the basic salt may be cooled and/or evaporated to remove unreacted barium hydroxide with or without some alkali metal chloride for return to the process.  The evaporation may be accompanied by carbonation or sulphation.  Evaporation and cooling may be effected simultaneously by a sudden reduction of pressure of the heated liquor, if desired in two or more stages with intermediate removal of solids.  If the carbonation is effected prior to the evaporation, barium carbonate is precipitated and returned to the process after calcination, the alkali metal chloride being returned separately.  At least a portion of the basic barium chloride also obtained in the reaction may be converted into oxide or hydroxide for return to the process.  This conversion may be effected by treatment with water or aqueous ammonia whereby a solid phase of barium hydroxide separates followed by carbonation of the residual liquor (preferably by means of ammonium carbonate) whereby the residual barium is precipitated as the carbonate and is returned to the process after calcination. Specification 464,834 is referred to in the Provisional Specifications.
Patent GB-1057331-A (GB)
Title: Chlorination of paraffins
Inventor: KONNECKE HANS GUNTHER
IPC: C07C17/10
Filed: 1964-08-25
Abstract: Monochlorinated hydrocarbons are prepared in one or more reaction steps by the continuous thermal chlorination of paraffin hydrocarbons by preheating C6- 40 paraffin hydrocarbons to a temperature approximating the reaction temperature, said hydrocarbons then being reacted in the liquid phase with gaseous chlorine at a temperature between 70 DEG  and 120 DEG  C. in a mol ratio of paraffin hydrocarbon to chlorine of 1: 0.25 to 1: 0.5 with a chlorine charge of at at most 3.2 k/mol per square metre cross-section of the reaction space per hour, with cooling, whereafter unreacted paraffin hydrocarbons are separated in known manner from the reaction product and recycled to the chlorination reaction.  Polychlorinated hydrocarbons are formed as by-products.