baber/WOPTO huggingface dataset:
Patent GB-785046-A (GB)
Title: Acetone soluble copolymers
Inventor: SPARKS ANTHONY
IPC: C08F214/08
Filed: 1954-12-24
Abstract: Copolymers in the form of beads are prepared by suspending a mixture of acrylonitrile and vinylidene chloride in such proportions that the resultant copolymer is soluble in acetone, in an aqueous phase containing an inorganic suspension stabilizer, for example magnesium oxide, and sufficient quantities of a dissolved salt, for example sodium chloride, to reduce substantially the solubility of acrylonitrile therein, and polymerizing the monomeric mixture at an elevated temperature with the aid of a monomer-soluble polymerization catalyst, for example benzoyl, ortho-chlorbenzoyl and lauryl peroxides.  The monomeric mixture preferably contains, per 100 parts, from 50 to 60 parts of vinylidene chloride and from 50 to 40 parts of acrylonitrile. Ternary polymers may be prepared by replacing some of the vinylidene chloride with a copolymerizable monomer such as vinyl chloride.
Patent GB-1439033-A (GB)
Title: Self powered wheelchair
IPC: A61G5/04
Filed: 1973-08-07
Abstract: 1439033 Adjustable back and footrests LAKESIDE Mfg Inc 7 Aug 1973 [16 Aug 1972] 37425/73 Heading A4J [Also in Divisions B7 and F2]  The rear axle 20 of an electrically powered wheelchair is mounted for oscillation about a longitudinal pivot shaft 19 and is provided with rear wheel braking means which tilt with the rear axle. The wheelchair includes a seat 1 with a pivoted back 6 mounted on a frame including verticals 8, 9, longitudinals 10 and transverse members 11, 16, the pivot shaft 19 being fixed between members 11, 16. A battery case 13 and luggage box 14 are mounted beneath the seat on rails 12. Cantilevered frames 35 support vertically pivoted idler and drive wheels 42, 60 the drive wheel also being steerable via tiller 79. The drive wheel is mounted by a castor 56 to a housing 51 releasably secured to the frame and is driven by an electric motor 63. The tiller 79 supports a control box 80 which has a steering handle 82 and depressable speed-control member 83. Co-operating stops 94, 93 are provided on the tiller and housing 51 to prevent over steering. The rear wheels are braked by shoes 27 carried at the ends of a shaft 26 pivoted by arms 25 to the rear axle for tilting movement therewith. The shaft is moved upwardly to apply the brakes when an upwardly spring-biased operating handle 28 is depressed. The handle is connected by a lever 31 to a rod 32 rotatably mounted in rails 12 and having a hook member 34 which surrounds shaft 26 but allows tilt thereof. Clockwise rotation of rod 28 causes the hook member to lift shaft 26 and brake the rear wheels. The cantilevered frames 35 telescopically support adjustable legs 40 which carry pivoted footrests 41.
Patent GB-359793-A (GB)
Title: Improvements in writing ink
IPC: C09D11/16
Filed: 1930-12-12
Abstract: Benzyl alcohol is added to writing-ink to facilitate absorption into the paper, the proportion being about 2 1/2 per cent.
Patent GB-624468-A (GB)
Title: Improvements relating to viscosimeters and to plant incorporating such apparatus
IPC: G01N11/14
Filed: 1946-12-20
Abstract: 624,468. Viscosimeters. SMIDTH & CO. AKTIESELSKAB, F. L. Dec. 20, 1946, No. 37563 Convention date, Dec. 30, 1941. [Class 106 (ii)] [Also in Groups XXXV and XXXVIII] A viscosimeter comprises a motor 4 driving through a differential gear 18, 20, 22 a shaft 1 carrying arms A immersed in the fluid under test, the differential planet - wheel 20 being carried by a radial shaft 21 adapted to rotate about the shaft in accordance with variations in the fluid viscosity and carrying the moving vanes 31 of a condenser connected in a circuit for measuring or controlling the viscosity. A curved scale 28 rigid with the movable vanes 31 also indicates the viscosity directly through a window in the casing 6. The radial shaft 21 is biassed by adjustable spring means, Fig. 2 (not shown), so that for constant viscosity the drive from the motor 4 is transmitted to the shaft without rotation of the shaft 21 which then moves about shaft 1 only with changes in viscosity. The motor 4 also drives an alternator 13 supplying the'measuring circuit, Fig. 3, in which adjustment of the measuring condenser 30, 31 varies the secondary current in a transformer 33 which is indicated on a meter 38 fed through a further transformer 36 and thermionic amplifier 39.
Patent GB-941481-A (GB)
Title: Improvements in or relating to the manufacture of supported thermosetting polyester resin sheets
IPC: B32B27/00
Filed: 1959-11-09
Abstract: 941,481. Laminates. SOC. ANON. DES USINES CHAUSSON. Nov. 9, 1959 [Dec. 3, 1958], No. 37904/59. Heading B5N. [Also in Division C3] A method of manufacturing unsaturated polyester resin sheets reinforced with natural or man-made fibre or fabric, e.g. glass fibre, and capable of being shaped mechanically and of being laminated, comprises (a) treating a permeable layer of reinforcing material with a polymerization initiator comprising a salt of a polyvalent metal, (b) agitating, and applying to the layer, a catalysed polyester resin which has been partially polymerized to a thixotropic gel, (c) subjecting one or both faces of the treated layer to the action of heat and/or a polymerization accelerator to form a thin, more fully polymerized, surface layer. The method is a modification of that described and claimed in Specification 938,403 wherein, in step (b), the catalysed polyester is gelled after application to the layer. In embodiments the gelled polyester may be diluted with ungelled polyester before application to the layer, or layers impregnated with the gelled polyester may be laminated with layers impregnated with the ungelled polyester and the laminate subjected to the surface treatment. The polyester may contain an inhibitor, e.g. 4-methyl-2: 6-di.t.-butylphenol, to extend the gel life, and a filler, e.g. calcium carbonate. The polymerization accelerator may be a mono- or di-alkyl aniline and may be mixed with a lubricant or mould-release agent, e.g. a mixture of mono- and di-alkyl phosphates. In examples the polymerization initiator is stannous chloride and the polyester is derived from ethylene glycol, maleic and phthalic anhydrides and adipic acid and is catalysed with benzoyl peroxide. The solvent comonomer is methylstyrene.
Patent GB-1489730-A (GB)
Title: Electrochemical cell
IPC: H01M4/06
Filed: 1976-09-14
Abstract: 1489730 Primary cells SAFT-SOC DES ACCUMULATEURS FIXES ET DE TRACTION 14 Sept 1976 [15 Sept 1975] 38091/76 Heading H1B The active material of a positive electrode for a cell having, e.g. a Li negative electrode and an electrolyte of lithium perchlorate in propylene carbonate, comprises a monovalent silver ferro or ferric cyanide.
Patent GB-1008140-A (GB)
Title: Latch for vehicle doors
IPC: E05B65/32
Filed: 1964-09-18
Abstract: 1,008,140. Latches. MENZIMER L.W. Sept. 18, 1964 [Sept. 25, 1963], No. 38124/64. Heading E2A. A latch assembly of the kind having a rotary toothed latching member 12 co-operating with a tooth 22 in the edge of a notch 23 in a striker plate 13 is distinguished by the feature that the striker plate is a single flat plate provided with means for securing its upper and lower ends to the door pillar or other frame member on which it is to be mounted, and with the toothed notch extending in from one edge of the plate intermediate its end. In the embodiment described the rotary gear 12 is mounted on a shaft 12<SP>1</SP> the outer end of which is supported by a bearing 18. The gear has two teeth 20, 21 which co-operate with the tooth 22 on the striker plate in the known manner. When the door is closed a yieldable cam 25 acts on the gear 12 to wedge the tooth 20 down into the pocket 24, the cam being journalled on a shaft projecting from the back of the striker. A disc 29 mounted on the shaft 12<SP>1</SP> is engaged by the cam 25 and also serves as an anti-burst device in the longitudinal direction. The door pillar 14 is formed with a recess 33 to receive the gear 12 and disc 29 when in the latched position. The striker 13 is elongated to span the recess 33 and it is preferably seated in a shallower recess 35 so that the striker lies flush with the door pillar. The striker is secured to the pillar 14 by two bolts 36 and third bolt 38 projecting through the shaft 27.
Patent GB-1277264-A (GB)
Title: 07-acetylgonanes and derivatives therefor
IPC: C07J7/00
Filed: 1969-07-30
Abstract: 1277264 17-Acetylgonanes AMERICAN HOME PRODUCTS CORP 30 July 1969 [30 July 1968] 38167/69 Headings C2C and C2U 17 - Acetyl - gon - 16 - enes and formates and alkanoates of 17α-acetylgonan-17#-ols, and D- homo analogues of these compounds, are prepared by hydrating the corresponding compounds containing an ethynyl group in place of the acetyl group. Hydration may be effected by heating in water in the presence of a catalyst, such as a mercurated cation exchange resin or silver nitrate. The 17-ethynyl-gon-16-enes and their D-homo analogues may in turn be prepared by dehydration of the corresponding 17α-ethynylgonan - 17# - ols and their D - homo analogues, for example using phosphorus oxychloride and pyridine; and the 17α-ethynylgonan-17#- ol formates and their D-homo analogues may in turn be prepared by formylation of the free 17B-ols, for example using DMF in the presence of phosphorus oxychloride. Novel products have the formula wherein R is C 2-6  alkyl; n is 1 or 2; X is a radical containing at least 11 carbon atoms so arranged as to complete a steroid of the cyclopentanoperhydrophenanthrene series or a D- homo analogue thereof; -C 16 -C 17 - is a divalent radical of one of the formulµ (wherein Y is H or CH 2 R<SP>4</SP> in which R<SP>4</SP> is H or C 1-6  alkyl; and R<SP>3</SP> is H or C 1-6  alkyl) provided that when the compounds are 17#-acetoxy-17α- acetyl compounds X is other than The 17 - acetyl - 16 - alkylgon - 16 - enes are prepared from the corresponding 16-unsubstituted compounds by reacting with a diazoalkane and then heating the thus-formed 16α,- 17α-alkyleneazogonane or D-homo analogue thereof. All the above compounds may be racemates or d-enantiomers. d - 17α - Ethynyl - 3 - methoxyestra - 1,3,5(10)- trien - 17# - ol acetate is prepared from the free 17#-ol and acetic anhydride in ethyl acetate containing perchloric acid. dl- 13#-ethyl-17α- ethynyl - 3 - methoxygona - 1,3,5(10) - trien- 17#-ol acetate is prepared similarly. dl-13#- Ethyl - 17α - ethynylgon - 5 - ene - 3#,17# - diol- 3-acetate is prepared by acetylating dl- 13#- ethyl - 17α - ethynyl - 17# - hydroxy - gon - 4- en - 3 - one to give dl - 13# - ethyl - 17α- ethynyl - gona - 3,5 - diene - 3,17# - diol diacetate, reducing this to dl - 13# - ethyl - 17α - ethynylgon - 5 - en - 3#,17# - diol 17 - acetate, hydrolysing this to the free diol and acetylating this. The novel 13-polycarbon alkyl steroids variously have estrogenic and anti-lipemic activity, and they may be made up into pharmaceutical compositions with suitable carriers.
Patent GB-921596-A (GB)
Title: Improved device for the angular adjustment of a shaft to predetermined positions
IPC: H03J5/10
Filed: 1961-10-26
Abstract: 921,596. Radio tuning arrangements. COMPAGNIE FRANCAISE THOMSON-HOUSTON. Oct. 26, 1961 [Oct. 26, 1960], No. 38358/61. Class 40 (5). [Also in Group XXIV] Manual means for setting a shaft, or shafts, to predetermined angular positions comprises a number of stops connected to the shaft and a movable stop capable of manual movement into positions in the trajectories of the shaft stops. In mechanism for frequency adjustment of radio apparatus having four channels determined by five pre-adjusted elements operated by spring detent set switching rings 20 and one progressively pre-adjustable switching ring 40 (Fig. 8), six shafts 11<SP>1</SP> are grouped to be geared together for simultaneous rotation by a rack 4, through torsion springs 28 connecting the pinions P1 to the shafts 11<SP>1</SP>. Each shaft 11<SP>1</SP> carries four rings 20, 21 having radial pins 27 and positioned angularly with respect to the shaft by spring ball detents 25. Each pin is contactable by a movable stop 19, having three fingers 29, moved axially by rotation of a helically-grooved cylinder 30 through gears 33, 32 by a square knob 10. To obtain a predetermined tuning position a release button 1 is depressed to remove a locking-bar 3 from the path of the rack 4. The rack 4 moves in the direction of the arrow F2 and rotates the shafts 11<SP>1</SP>, through the torsion springs 28, to a " zero " position in which all the pins 27 are clear of the fingers 29. Rotation of the knob 10 to the required position (I to IV) causes the movable stop 19 to travel axially to align the fingers 29 with the paths of the pins 27 of one set of rings 20. Depression of the knob 10 moves the rack 4 which rotates the pinions P1  to load the springs 28 which rotate the shafts 11<SP>1</SP> until the pins 27 contact the fingers 29; at the same time the spring 8 is loaded and the lock 3 enters an aperture in the rack under the influence of a spring 5. The six shafts are then set to their desired positions. The switching ring 40 is mounted on a worm-wheel 36 fixed to a square shaft 15 (similar to the shaft 11) and may be adjusted by a worm 41 frictionally held by a blade-spring 42.
Patent GB-960543-A (GB)
Title: Improved method and apparatus for extruding thermoplastic material
IPC: B29C48/08
Filed: 1962-10-10
Abstract: 960,543. Extruding thermoplastic material; extrusion nozzle. IMPERIAL CHEMICAL INDUSTRIES OF AUSTRALIA & NEW ZEALAND Ltd. Oct. 10, 1962 [Oct. 17, 1961], No. 38398/62. Headings B5A and B5B. In a process for producing a tube or flat sheet or the film of an organic thermoplastic material by extrusion of the material through an orifice formed between two die surfaces, one or both of the surfaces is heated throughout its length by means of a heater which is moved along the length of the respective die surface. As shown, as applied to tubular films, the die heater 2 is rotated by means of a ring mounting 4, 5, rotated by an electric motor, and the extent of travel is controlled by electrical switch gear 6. The die heater 2 may be so arranged that it transfers heat to the die cup surface by radiation or conduction. In an arrangement with a slot die to extrude flat sheets, the heater may be reciprocated in contact with the outer surface of the or each opposed die surface.
Patent GB-1447281-A (GB)
Title: Crystallization apparatus
IPC: B01D9/00
Filed: 1973-08-15
Abstract: 1447281 Crystallisation apparatus JOH A BENCKISER GmbH 15 Aug 1973 [15 Aug 1972] 38589/73 Heading B1G A method of crystallising a substance from a solution comprises circulating the solution around a system comprising, as shown in the Fig., a crystallisation chamber 2 maintained at atmospheric pressure or slightly above, a heat exchanger 5 forming an evaporation zone located at a higher vertical level than the crystallisation chamber 2 and a vacuum chamber 1 also located at a higher vertical level than the crystallisation chamber so that the solution passes from the crystallisation chamber 2 to the heat exchanger 5, thence to the vacuum chamber 1 and back to the crystallisation chamber 2, the circulation being effected by ebullition of the solution in the heat exchanger 5 in the manner of an air lift pump. The pressure in the vacuum chamber 1 should preferably be 20-55 Ton and the solution to be crystallised fed into the upper vacuum chamber 1 or the lower crystallisation chamber 2. In order to facilitate circulation the level of liquid in the vacuum chamber 1 should be maintained at a constant level. This is preferably achieved by controlling the pressure differential between the vacuum and crystallisation chambers depending on the density of the crystal suspension. The method is suitable for crystallising substances, which cake together and/or adhere to the walls of the apparatus in solutions of water or organic solvents. Substances crystallised include organic acids e.g. citric acid, inorganic potassium and ammonium salts CuSO 4 , sodium glutamate, borax, melamine and urea.
Patent GB-1533629-A (GB)
Title: Communication system using amplitude modulated impatt diode oscillator
IPC: H04B1/02
Filed: 1976-09-17
Abstract: 1533629 Amplitude modulators; RF lens RCA CORPORATION 17 Sept 1976 [25 Sept 1975] 38598/76 Headings H3R and H4A A microwave communications system comprises an oscillator including an IMPATT diode 21, and amplitude modulator 13 responsive to video signals to vary the current through the diode and hence the RF power output at 53 and an arrangement (Fig. 1, not shown) for radiating the oscillator output and receiving it at a remote location and including a square low detector at the receiver end for recovering the video signals. In operation, video signals from a TV surveillance camera applied at 46 vary the bias current fed via transistor 27 to vary the operational current of diode 21 in its avalanche mode. The antenna used for radiation or reception may include a horn antenna in association with a dielectric lens (see Fig. 6) made of polypropylene discs secured by a nylon screw and nuts for converting spherical wave-front into planar wave-front and vice versa.
Patent GB-817651-A (GB)
Title: A selector mechanism for the gear box of motor vehicles more particularly small cars
IPC: F16H63/30
Filed: 1956-12-19
Abstract: 817,651. Change -speed control. NSU WERKE A.G. Dec. 19, 1956 [Dec. 21, 1955], No. 38701/56. Class 80 (2). To select a ratio in a motor car change-speed and reverse gear, a handle 1 is operated in one plane to turn a rod 2 so that a two-armed selector member 3 fast therewith engages one of three bell-crank levers 5, 6, 7, operation of the handle in a second plane perpendicular to the first sliding the rod 2 axially to pivot the selected bell-crank lever so that a striker fork 9 establishes the ratio. A forked interlock plate 14 turns with the rod 2 but is prevented from sliding with it, and locks the bell-crank levers 5 &c. not selected in neutral position. The selector member 3 is formed with a number of holes, one of which engages one of a pair of guide pins 4 when the selected ratio is established. To select reverse, the handle 1 and rod 2 are turned so that a resilient stop 10 on an arm 11 fast with the rod pushes against a similar resilient stop 13 on the gear-box casing 12. Having overcome the resistance of the contacting resilient stops, the handle 1 can then be operated to slide the rod 2 axially and establish reverse.
Patent GB-1424829-A (GB)
Title: Fluid pressure testing apparatus
IPC: G01M3/28
Filed: 1973-08-16
Abstract: 1424829 Leak testing RUNTAL HOLDING COSA 16 Aug 1973 [16 Aug 1972] 38875/73 Heading G1S A fluid supply system incorporates apparatus which may be used either to indicate a fall in fluidpressure at an inlet or to leak test two shut-off valves 2, 3 in series in a fluid supply pipe 1 having an inlet 5 and an outlet 6. The apparatus comprises a differential pressure chamber divided into two chambers 7, 8 separated by a movable wall 9 which is biased towards one chamber 8. Chamber 7 is connected via a valve 22 either to the pipe situated between valves 2, 3 or to atmosphere, the other chamber 8 being similarly connected either to atmosphere or to the fluid inlet 5. The wall 9 moves in accordance with the pressure changes in chambers 7, 8 so as move means 11 for indicating changes in the differential pressure between chambers 7, 8. As described, the means 11 moves longitudinally to bridge switch contacts 17, 18 or 19, 20. With chamber 7 connected to atmosphere and chamber 8 connected to the inlet 5, the pressure in chamber 8 forces the means 11 against the biasing force of spring 14 so as to bridge contacts 17, 18. If the fluid-pressure at inelt falls sufficiently, contacts 17, 18 open and contacts 19, 20 close to initiate a signal. When the valve connections 22, 24 are reversed and valves 2, 3 closed, spring 14 acts to produce a reduced pressure in chamber 7 and hence in portion 4 of the pipe 1. Contacts 17, 18 will remain closed if no leak occurs at the valves 2, 3. If a leak is present, however, contacts 19, 20 are closed thereby signalling a leak.
Patent GB-934182-A (GB)
Title: Gold decorating compositions containing gold primary mercaptides
IPC: C03C17/10
Filed: 1959-11-17
Abstract: Gold ethyl mercaptide is made by adding a hydrochloric acid solution of chlorauric acid to a methanol solution of ethyl mercaptan, distilling off excess mercaptan, and recovering mercaptide precipitate by filtration.  Specifications 721,906, 889,912 and U.S.A. Specification 2,490,399 are referred to.ALSO:A composition for applying gold coatings to articles comprises a gold primary mercaptide together with one or more of an organic vehicle, a gold flux and a liquid bright gold.  The mercaptide has the general formula RCH2SAu in which R is preferably hydrogen or an alkyl, aralkyl or aryl group, e.g. ethyl, n-octyl, n-dodecyl or benzyl. Specified organic vehicles include mixtures of two or more of methyl ethyl ketone, cyclohexanone, ethyl acetate, amyl acetate, butanol, nitrobenzene, toluene, xylene, petroleum ether, chloroform, carbon tetrachloride, pinene, dipentene, dipentene oxide, essential oils, Assyrian asphalt, rosin, balsam and synthetic resins.  The gold flux may include salts or resinates of bismuth, lead, boron, silicon, chromium, cadmium, tin, copper, cobalt, antimony or uranium.  The flux may also include (a) silver salts or resinates to give a green gold coating, (b) palladium or platinum salts or resinates to give a white gold coating, and (c) extenders such as mercuric oxide, mercury resinate or sulphur.  Suitable liquid bright golds contain gold resinate, gold cyclic terpene mercaptide or gold secondary or tertiary mercaptide together with organic solvent and gold fluxes as above: salts and resinates of rhodium or iridium may also be included.  The composition is applied to the article to be coated as by brushing, spraying, stippling, dipping, stamping, roller-coating, printing, screen-printing, stencilling or decalcomania, and the coated article fired by heating in a kiln or oven, preferably in an oxidizing atmosphere at least during the early stages of firing. Articles which are coated may be composed of glass, ceramics (porcelain or earthenware), porcelain-enamelled steel or glass, quartz, stainless steel, aluminium, carbon or mica.  The gold coatings, which may be finally burnished, are useful on reflectors for lamps or ovens, in forming printed circuits and resistors, and as bases for electroplating and hot-dipping.  Specific compositions are disclosed in the examples. Specifications 721,906, 889,912 and U.S.A. Specification 2,490,399 are referred to.
Patent GB-1313738-A (GB)
Title: Method for producing 2-butene-1,4-diol
IPC: B01J31/00
Filed: 1970-08-13
Abstract: 1313738 Production of 2-butene-1,4-dio TOYO SODA MFG CO Ltd 13 Aug 1970 [14 Aug 1969] 38973/70 Heading C2C 2-Butene-1,4-diol is prepared by hydrolysing a 1,4-dihalo-2-butene in the presence of an alkali metal salt or ammonium salt of a carboxylic acid and with the addition of ammonia, an alkali or a salt capable of exhibiting alkalinity on hydrolytic dissociation to maintain the reaction system in the range of pH 3 to pH 11.
Patent GB-930759-A (GB)
Title: Improvements in hydrometers
IPC: G01N9/14
Filed: 1959-11-18
Abstract: 930,759. Hydrometers. G. W. G. SHRUBSALL. Feb. 10, 1961 [Nov. 18, 1959], No. 39128/59. Class 97 (3). An hydrometer comprises a float 4 mounted within a cylinder 1 into which liquid to be tested is drawn by means of an inlet tube 2 and bulb 3, a transparent sleeve 5, provided with a scale, mounted in frictional contact externally on the cylinder for rotational and vertical movement thereon and an index 6 on the float 1 which is visible through the scale and indicates thereon the specific gravity of the liquid when a datum mark 7 on the sleeve 5 is aligned with the level of liquid in cylinder 1. Alternatively a datum mark 7 on sleeve 5 is aligned with index mark 6 on float 4 and the specific gravity is indicated by the liquid level against the scale. The index mark 6 may be formed by a projection on the stem of the float 4.