baber/WOPTO huggingface dataset:
Patent GB-1134289-A (GB)
Title: A thermally controlled electric switch
Inventor: MORO ANTONIO
IPC: H01H37/54
Filed: 1967-11-03
Abstract: 1,134,289. Two-part couplings. FRATELLI BORLETTI S.p.A. 3 Nov., 1967 [3 Nov., 1966], No. 50170/67. Addition to 1,035,515. Heading H2E. [Also in Division H1] The terminals of a thermally controlled electric switch are formed as contact prongs 22<SP>1</SP>, 28<SP>1</SP>. Bi-metal 1 acts on lever 6 carrying movable contact 26 against the net result of the forces f 1 , f 2  exerted by springs 13, 17 to close the contacts 26, 27. The circuit from contact prong 28<SP>1</SP> is through fixed contact 27, movable contact 26, spring 17 and bracket 19 to contact prong 22<SP>1</SP>.
Patent GB-1088187-A (GB)
Title: Process for production of dihydroxysiloxanes
Inventor: KARLIN ALEXANDR VASILJEVICH
IPC: C07F7/08
Filed: 1964-12-10
Abstract: a ,o -Dihydroxysiloxanes are made by reacting cyclosiloxanes with water in the presence of catalysts at 220 DEG  to 280 DEG C. and a superatmospheric pressure of up to 30 kg./sq. cm. Catalysts specified are KOH and H3PO4.  In a typical Example (1), water, KOH and octamethylcyclotetrasiloxane were heated to 250 DEG C. in an utoclave, the pressure being 18 kg./sq. cm., to yield an a ,o -dihydroxydimethylpolysiloxane having a molecular wt. of 7000.
Patent GB-1400915-A (GB)
Title: Preservative composition
IPC: A23K3/00
Filed: 1973-10-29
Abstract: 1400915 Treatment of grain and feedstuffs  CELANESE CORP 29 Oct 1973 [30 Oct 1972] 50277/73 Headings A2B and A2D [Also in Division A5] The growth of mould in grain and animal feedstuffs is prevented by treatment with an antifungal composition comprising (a) an acid mixture of 20% to 80% by weight of acetic acid and 80% to 20% by weight of propionic acid and (b) 15% to 25% by weight, or an anhydrous basis, of formaldehyde.
Patent GB-1285076-A (GB)
Title: Rotary cutting tool
IPC: B23C5/10
Filed: 1969-10-14
Abstract: 1285076 Milling cutters WELDON TOOL CO 14 Oct 1969 [8 May 1969] 50380/69 Heading B3K A rotary cutting tool blank has a set of flutes the front face of each of which is of undulating form providing a series of recess and forwardly disposed points along this face, the land surface 58, Fig. 9, between the leading and trailing faces of the flute being of part cylindrical form of uniform radius around the axis of the blank. This surface may be ground at a uniform relief angle so as to provide cutting edges, Fig. 4, having high points 53 and low points 51. Alternatively the flute may be so ground, Fig. 1, that the cutting edge is of constant height whether at the forward points 73 or at the recesses 71. The invention is described in relation to an end mill 20, Fig. 1, having four flutes, the forward points and recesses of one flute being staggered in relation to the next.
Patent GB-1372245-A (GB)
Title: Electrochemical cells
IPC: G01N27/49
Filed: 1971-11-02
Abstract: 1372245 Electro-chemical analysis ENERGETICS SCIENCE Inc 2 Nov 1971 [10 Nov 1970] 50899/71 Heading G1N In an electro-chemical cell for detecting gases the anode 20 is maintained at a potential such that a current is not generated due to an oxygen water redox couple which current would be in addition to the current produced by the gas being detected and cause an error in the reading. The potential is in the range +0À7 to +1À5V if oxygen is present in the gas or not greater than +1À5V if no oxygen is present. Cell construction A glass fibre wick 14 absorbs electrolyte 12 and is sandwiched between electrode carriers 16, 18 carrying anode 20, reference electrode 24 and cathode 22 respectively, the electrodes 22, 24 being exposed on one side to the atmosphere. The carrier 16 is structured so as to define a labyrinth path across the anode 20 along which the gas to be tested passes from 44 to 46 at a metered rate. The electrodes are constructed as diffusion electrodes. In an alternative cell construction Fig. 5 (not shown) the labyrinth path is replaced by a circular chamber provided with a fan to distribute the gas being tested over the anode. In order to test for CO the anode 24 is of platinum black and the electrolyte 12 sulphuric acid. In order to prevent a current being produced by any oxygen water redox couples present the potential at the anode is maintained in the range + 1À07V to +1À13V by means of a potentiostat circuit Fig. 8 (not shown). Since this voltage is more anodic than the redox couple CO 2 /CO potential of -0À12V any CO exposed at the anode will undergo oxidation and a corresponding current will be produced in the anode-cathode circuit. If gold electrodes are used the appropriate potential of the anode is in the range 0À7 to 1À8V. Air is tested for CO, NO and hydrocarbons by first passing the sample through a cell having a gold anode and sulphuric acid electrolyte at room temperature, the potential of the anode being +1À05 to +1À2 volts to detect nitric oxide. The sample is then fed through a cell to detect CO and finally through a cell having a platinum black electrode and phosphoric acid electrolyte at a temperature 100‹C to 200‹C and an anode potential +1À07V to +1À3V to detect hydrocarbons. Various electrode materials are listed in the Specification. The apparatus may be used to detect alcohol in a person's breath. If no oxygen is present in the gas being detected the lower limit of the anode potential may be unfixed but the higher limit maintained at below +1À5V relative to a hydrogen redox couple as a zero base.
Patent GB-1369448-A (GB)
Title: Device for relieving voltage unbalance
IPC: H01F30/12
Filed: 1971-11-03
Abstract: 1369448 Transformers HITACHI Ltd 3 Nov 1971 [11 Nov 1970] 51152/71 Heading HIT [Also in Division H2] A device for use in a voltage-control system comprises a three-part core F 1 , F 2 , F 3 , Fig. 2, for coupling primary windings A 1 , B 1 , C 1  (one for each phase) to secondary windings A 2 , -, C 4  arranged in three series connected groups (A 2 , B 3 , C 4 ), (B 2 , C 3 , A 4 ), (C 2 , A 3 , B 4 ) having respective outputs AA, BB, CC, each set of windings (e.g. A 1 , A 2 , A 3 , A 4 ) having a turns-ratio of 1:1:2:2. If the input voltage V to one of the primary windings (say A) is reduced by a factor Z, (so that the inputs are V(1-Z), V, V) then with the above arrangement the output voltages will be  from which it follows that the input fractional error (B - A/A) is much greater than the output error (BB - AA/AA). The core may be a threelegged one as shown in Fig. 5a, and with or without an additional free leg FF (Fig. 5b, not shown).
Patent GB-1103230-A (GB)
Title: Perchloroethylene
IPC: C07C17/38
Filed: 1966-11-16
Abstract: High purity perchloroethylene is further purified by contacting said perchloroethylene with anhydrous ammonia in a gas-liquid contact zone, passing perchloroethylene from said zone to a storage zone, storing said perchloroethylene for a period of at least 8 hours under an atmosphere of gaseous ammonia, removing said perchloroethylene after storage, washing it with water and subsequently drying it to reduce its water content.
Patent GB-1377113-A (GB)
Title: Battery terminals
IPC: H01M50/50
Filed: 1972-11-07
Abstract: 1377113 Storage battery terminals VARTA AG 7 Nov 1972 [8 Nov 1971] 51353/72 Heading H1B A storage battery is provided with positive and negative terminal pillars 6 extending, respectively, through opposite side walls of the battery casing 1, each pillar forming part of a corresponding terminal assembly. Each assembly comprises a tubular member 3 carried by a connecting strap 2 connecting either the positive or the negative electrode plates, the two members 3 being in axial alignment. Before the electrode plates are inserted in the casing 1 a member 4 of plastics material is placed between the members 3 so that its axial end extensions are received in a corresponding metal abutment member 5 positioned in the inner end of each member 3. The terminal pillars 6 with a sealing washer 7 are introduced into the members 3 so that their inner ends are forced over the frustoconical portions of the members 5 and expanded outwardly to be retained by the inclined part of the bore within the members 3. Connection to the pillars 6 may be made by a plug connector to permit interconnection of adjacent batteries.
Patent GB-1418374-A (GB)
Title: Methods and compositions for dispersing oil films
IPC: C09K23/24
Filed: 1973-11-06
Abstract: 1418374 Oil dispersal USS ENGS & CONSULTANTS Inc 6 Nov 1973 [13 Nov 1972] 51525/73 Heading C1C A composition for dispersing oil films on water comprises a solution of 3-50 wt. per cent of a non-ionic surfactant in 50-97 wt. per cent of water-insoluble oxygenated organic compounds selected from (i) mixtures comprising 65-95 wt. per cent of mixed C 4 -C 13  alcohols and 5-35 wt. per cent of esters of said alcohols (e.g. with adipic, sebacic or phthalic acid), (ii) oxo bottoms obtained from the production of C 6 -C 13  oxo-alcohols, and (iii) mixtures of (i) and (ii). The non-ionic surfactant may be an alkanolamine/fatty acid condensate, an ethylene glycol ether, a polyalkylene glycol ether, or a polycarboxylic acid ester. The composition may be poured into or sprayed on to the polluted water (e.g. of a river) or a stream feeding it, or added to an effluent stream containing oil and water which discharges into a larger body of water. The oil may be a petroleum, vegetable or coal tar oil in a concn. of up to 100 p.p.m.
Patent GB-1360616-A (GB)
Title: Rubberised asphalts
IPC: C08L95/00
Filed: 1971-10-29
Abstract: 1360616 Rubberized asphalt ESSO RESEARCH & ENG CO 29 Oct 1971 [30 Oct 1970] 51708/70 Heading C3N A method of preparing rubberized asphalt comprises injecting a solution of a rubber in an organic rubber-solvent into asphalt, which asphalt is initially at a temperature in the range 215-300‹ C., to form a blend; and subjecting the blend to conditions of temperature and pressure sufficient to evaporate all, or substantially all, of the solvent but insufficient materially to depolymerize the rubber. The residual solvent may be removed by stripping. The rubber may be natural or synthetic but is preferably a styrene-butadiene rubber and the organic solvent may be a chlorinated aliphatic C 1 -C 3  alkane or alkene, e.g. dichloromethane or trichloroethylene. The asphalt may be straight run, blown or cut back. The examples describe the preparation of 5% and 2% rubberized asphalt. The evaporated solvent may be recycled for use in preparing a further solution of the rubber.
Patent GB-1528479-A (GB)
Title: Self-restoring type current limiting device
IPC: H01H87/00
Filed: 1975-12-17
Abstract: 1528479 Current limiters TERASAKI DENKI SANGYO KK 17 Dec 1975 51714/75 Heading H1N A current limiting device comprises an insulating disc 18 and an axially aligned insulating member 16 positioned between a pair of coaxial electrodes 12, 14 so as to define a cavity 24 between the electrodes 12, 14 which is filled with a vapourizable conductive material which, when an excess current occurs, evaporates firstly in a radial section 20 lying between the disc 18 and member 16 where the current density is a maximum. In one embodiment, an electrically insulating disc 18 is mounted between reduced ends 12<SP>1</SP>, 14<SP>1</SP> of electrodes 12, 14 which are mounted in a cylindrical metal casing 10. The reduced end 14<SP>1</SP> of the electrode 14 projects from a hollow insulating member 16 whereby an inverted L-shaped space 24 is formed which is filled with the current limiting material 26 such as sodium, potassium or a sodiumpotassium alloy. The disc 18 may have a flat surface, as shown, a frusto-conical surface 18<SP>1</SP> (Fig. 3, not shown) or may be provided with spaced sector shaped ridges (32) (Fig. 7, not shown) engaging the insulating member 16 so as to define spaced webs (34) (Figs. 6 and 8, not shown) of current limiting material 26 extending from the electrode 14. In another embodiment, the disc 18 is positioned in a recess (12<SP>11</SP>) (Fig. 9, not shown) in the electrode 12, the recess (12<SP>11</SP>) being closed by an insulating member 16 to define a space 20, 22 within the recess which communicates with a hole in the member 16 and electrode 14. The space 20, 22 and communicating hole are filled with current limiting material, the hole having a pressure relief device (36) for preventing a high pressure when the current limiting material evaporates. The electrode 14 is surrounded by an insulating member (16<SP>1</SP>).
Patent GB-1479730-A (GB)
Title: Carburetter of the constant depression type
IPC: F02B17/00
Filed: 1974-11-05
Abstract: 1479730 Valves BRITISH LEYLAND UK Ltd 5 Nov 1974 [8 Nov 1973] 51818/73 Heading F2V [Also in Division F1] A sleeve valve 13 is operable by a solenoid to prevent the flow of fuel into the choke of a substantially constant depression carburetter by engaging a seat 19 around the orifice 20 defined between the fuel jet 8 and the needle 4 carried by the choke piston 3.
Patent GB-1207047-A (GB)
Title: A PROCESS FOR THE MANUFACTURE OF A 17alpha-ETHYNYL-GONENE
IPC: C07C45/29
Filed: 1968-11-01
Abstract: 1,207,047. Steroid skeletal synthesis. F. HOFFMAN-LA ROCHE & CO. A.G. 1 Nov., 1968 [2 Nov., 1967], No. 51934/68. Headings C2C and C2U. The invention comprises 10-(3-oxobutyl)- 18 - methyl - 19 - nor - des - A - androstane - 5,17 - dione (I), its cyclization to 13# - ethyl - gon - 4 - ene - 3,17 - dione, and the conversion of this by treatment with an alkali metal acetylide or an acetylene magnesium halide in the presence of liquid ammonia to 13# - ethyl - 17α - ethynyl - 17# - hydroxy - gon-4-en-3-one, all these compounds being optically active or racemic. Compound I is prepared from 6-(4-tbutoxypentyl) - 2 - tetrahydropyranol (II) by the sequence II # 3,7-dihydroxy-11-t-butoxydodec-1-ene # 2-(2-diethylaminoethyl)-6-(4-tbutoxypentyl) - 2 - tetrahydropyranol # 3 - (4- t - butoxy - pentyl) - 6a# - ethyl - 2,3,5,6,6a,8 - hexahydro - cyclopenta[f][l] - benzopyran - 7(1H) - one # 3 - (4 - t - butoxy - pentyl) - 6a# - ethyl - 2,3,5,6,6a,8 - hexahydro - cyclopenta[f][l]- benzopyran - 7(1H) - ol # 6a,9a - trans - 3 - (4 - t - butoxy - pentyl) - 6a# - ethyl - 2,3,5,6,6a,- 8,9,9a - octahydro - cyclopenta[f][l]benzopyran- 7(1H) - ol # a mixture of 6a,9a - trans - 3 - (t - butoxy - pentyl) - 6a# - ethyl - perhydrocyclopenta[f][l]benzopyran - 4a,7 - diol and 3a,7a - trans - 4 - (7 - t - butoxy - 3 - hydroxyoctyl) - 7a# - ethyl - perhydro ndane - 1,5 - dione # 3a,7atrans - 4 - (7 - t - butoxy - 3 - oxo - octyl) - 7a# - ethyl - perhydroindane - 1,5 - dione # 10 - (3 - t - butoxy - butyl) - 18 - methyl - 19 - nor - des - A - androst - 9 - ene - 5,17 - dione # 10 - (3 - t - butoxybutyl) - 18 - methyl - 19 - nor - des - A - androstane - 5,17 - dione # 6a,9a - trans - 2 - methyl - 6a# - ethyl - 7 - oxo - perhydrocyclopenta[5,6]- naphtho[2,1-b]pyran - 11a - ol # I. 6 - (4 - t - Butoxy - pentyl) - 2 - tetrahydropyranol is prepared (a) from 6-(4 - t - butoxy - pentyl)-valerolactone or (b) from 5-chloro-2- pentanone via 5-chloro-2-pentanol and 5-chloro- 2-t-butoxy-pentane. Specification 1,207,048 is referred to.
Patent GB-1400149-A (GB)
Title: Photographic silver halide material
IPC: G03C1/43
Filed: 1971-11-10
Abstract: 1400149 Photographic silver halide materials AGFA-GEVAERT 30 Oct 1972 [10 Nov 1971] 52290/71 Heading G2C [Also in Division C2]  Photographic silver halide emulsions having improved image-sharpness contain a compound of the Formula:- wherein R is hydrogen or acyl e.g. acetyl, haloacetyl, R 1  is hydrogen, alkyl, aryl, halogen or alkoxy and R2 is an aliphatic, aromatic or heterocyclic group e.g. 1-phenyl-5-tetrazolyl, 2-benzthiazolyl, 1-phenyl-3-triazolyl, phenyl or benzyl. The emulsions are preferably Lippmann emulsions.
Patent GB-1192912-A (GB)
Title: Ergocristine Preparation
IPC: C12R1/645
Filed: 1968-11-05
Abstract: 1,192,912. Ergocristine preparation. SOC. FARMACEUTICI ITALIA. 5 Nov., 1968 [10 Nov., 1967], No. 52294/68. Heading C2C. Ergocristine is prepared by culturing Claviceps purpurea F.I. S40 by developing the micro-organism in a liquid cultural medium containing an assimilable source of carbon, an assimilable source of nitrogen and mineral salts under aerobic conditions in submerged culture.
Patent GB-1213310-A (GB)
Title: A method of and apparatus for writing digital data on magnetic tape with uniform packing density
Inventor: SMITH JOHN STANLEY
IPC: G06K1/00
Filed: 1967-11-18
Abstract: 1,213,310. Magnetic tape data storage. J. S. SMITH. 10 Feb., 1969 [18 Nov., 1967], No. 52570/67. Heading G4C. Digital data is recorded on tape (e.g. magnetic) when a voltage proportional to tape speed has integrated to a predetermined level, the integrator being reset, for uniform packing density. The level may be adjustable, or an adjustable attenuator may precede the integrator, for packing density selection.
Patent GB-1069299-A (GB)
Title: Improvements in and relating to friction clutches
Inventor: BASSETT NORMAN EDGAR
IPC: F16D23/14
Filed: 1964-12-29
Abstract: 1,069,299. Friction clutches. AUTOMOTIVE PRODUCTS CO. Ltd. Sept. 15, 1965 [Dec. 29, 1964], No. 52655/64. Heading F2C. In a diaphragm spring friction clutch wherein the ends of radially inwardly directed tongues 5 of a diaphragm spring 1 are held between crowned portions of an annular rib 6 on a thrust ring 2, transmitting thrust from a release bearing, and the outer edge of a Belleville washer 10, a sleeve 8 extending through the Belleville washer and diaphragm spring central aperture 3 and into the bore of the thrust ring comprises at one end an external flange 9 for abutment by the inner edge of the Belleville washer and adjacent its other end equally spaced external radial projections engaging in an annular groove 12 in the thrust ring. The sleeve may be a metal tube in which case on assembly of the diaphragm spring, thrust ring, Belleville washer and sleeve, the thrust ring is loaded to render flush the ends of the thrust ring and sleeve, and with the assembly clamped the sleeve is punched outwardly to produce the projections 11 and secure the parts together. In Fig. 3 (not shown), the thrust ring has an inwardly directed abutment against which the sleeve is located on the assembly. The thrust ring has projections 7 on the rib 6 engaging diaphragm spring slots 4 between the tongues 5. The thrust ring may be of cast iron or sintered material or a coined steel forging. The outer periphery of the thrust ring may be circular or, particularly to reduce or eliminate " squeal " when the ring is of sintered material, have peripheral flats.
Patent GB-1486309-A (GB)
Title: Clamps
IPC: B25B5/08
Filed: 1975-12-08
Abstract: 1486309 Adjustable clamp F BRAUER Ltd 8 Dec 1975 [6 Dec 1974] 52894/74 Heading E2B A jaw 6 of a clamp is slidably adjustable on bar 1 and is locked in its adjusted position by a lever operated cam 18 which tilts a jamming plate 11 into its gripping position on the bar and then rotates the jaw counter clockwise against spring 17 about the end 14 of the plate to effect grip. Serrations may be provided on the bar to assist location and a rachet mechanism may be provided to operate the cam.
Patent GB-1135390-A (GB)
Title: Mixing installation
Inventor: FRIDMAN VICTOR MIRONOVICH
IPC: B01F11/02
Filed: 1965-12-13
Abstract: 1,135,390. Ultra-sonic mixers; emulsification apparatus. VSESOJUZNY NAUCHO-ISSLEDOVATELJSKY I KONSTRUKTORSKY INSTITUTE KHIMICHESKOGO MASHINOSTROENIJA. 13 Dec., 1965, No. 52937/65. Headings B1C and B1V. An installation for mixing liquids, particularly to form emulsions, consists of at least two mechanical ultra-sonic vibrating mixer units connected in series. Each unit comprises a nozzle 2 and a vibrating plate 3, which is cantilever mounted along the axis of the nozzle 2 and gradually decreases in cross-section from its fixed end to its free end which is in the vicinity of the nozzle outlet, the nozzle and plate being housed in a cylindrical resonator 1. The nozzle is in two parts 4, 5 which can be separated for clearing the nozzle if blocked. The units are supplied with pressurised liquids via a preliminary mixing chamber, pump and filter. Mixed liquids leaving the last unit may be returned to the first unit for recirculation. Two or more installations may be joined together in parallel.
Patent GB-1499920-A (GB)
Title: Hydroponic cultivation
IPC: A01G31/00
Filed: 1975-12-29
Abstract: 1499920 Compressing air hydraulically J TATAMOTO and H KOBAYASHI 29 Dec 1975 [28 Feb 1974 (2) 10 Feb 1975 13 Feb 1975 ] 52971/75 Heading F1N [Also in Division A1] A tank 42 has an air entrance port 44 and an exhaust port 45 controlled by valves 46 and 47 respectively, the ball 46a being lighter than ball 47a such that, as liquid entering through passage 48 rises in tank 42, ball 46a rises to close valve 46 and, with valve 47 also closed, air within the tank is compressed. The ball 47a subsequently rises to open valve 47 and allow compressed air to exit to an accumulator until the liquid reaches portion 43b and thus flows out of the tank through a siphon 43. Valve 46 opens and valve 47 closes and the cycle may then be repeated.
Patent GB-1085780-A (GB)
Title: Improvements in thrust reverser
Inventor: BEAVERS ROBERT GERALD
IPC: F02K1/72
Filed: 1965-12-15
Abstract: 1,085,780. Thrust reversers. GENERAL ELECTRIC CO. Dec. 15, 1965, No. 53250/65. Heading B7G. In a turbofan engine in which the fan air exhausts through an annular duct, e.g. between an engine casing 14, or a plug, and an outer cowling 16, the cowling is split into abutting front and rear portions, the rear portion 19 being translatable rearwardly by an actuator 36 to uncover cascades of vanes 24 fixed to the front portion 18. Flaps 22, to block the rearward airflow, pivotally mounted on the rear portion are simultaneously extended to block the floor by scissors links 31, 32 pivoted respectively to the rear portion at 39 and to a ring member 27 fixed to the cascade and hence the fixed front portion. The joint 37 between each pair of links slides in a slot 33 in a stiffening member on the corresponding flap. The flaps do not overlap but are arranged to abut as they contact the casing 14. The arrangement of flaps and links is such that the total exhaust area is constant. The vanes are fixed between rearwardly extending beams 26 supported by rings 25, 27 and 28. The engine may be a front fan, aft fan or cruise fan engine, and as described is a front fan engine mounted on a pylon beneath an aircraft wing.
Patent GB-1213792-A (GB)
Title: Inhibition of corrosion of metallic surfaces
Inventor: BARNES JOHN NORMAN
IPC: C23F11/04
Filed: 1966-11-30
Abstract: 1,213,792. Inhibiting corrosion. DIVERSEY Ltd. Nov.20, 1967 [Nov. 30, 1966], No.53677/66. Heading C7E. Corrosion of metal, such as stainless steel, mild steel, aluminium, zinc or manganese, by acid such as phosphoric acid, sulphamic acid, H2 SO4 HCl or HNO3 is inhibited by treating it with iodine in the presence of the acid. The iodine may be aqueous or alcoholic solution, and may be accompanied by or combined with a surface-active agent, such as di-N substituted polyalkoxy condensates of tertiary amines or of amides, alkyl ether sulphates, nonyl phenol ethylene oxide condensates, ampholyticsurface-active agents, alkanolamines phosphate esters and alkylamines. The concentration of iodine in solution may be 0À0001 to 1À0% w/w and that of the surface-active agent 0À002 to 10% w/w. Iodine may be added to an acid bath, such as an H2 SO4 pickling bath used to remove oxide scale from steel, or to acid employed to descale the interior of ferrous metal vessels, and metal which is to be exposed to a corrosive atmosphere may be treated with iodine and acid.