baber/WOPTO huggingface dataset:
Patent GB-1070042-A (GB)
Title: Improvements in or relating to the production of hydroxocobalamine
IPC: C07H23/00
Filed: 1966-02-02
Abstract: Hydroxocobalamine is obtained from an aqueous solution of cyanocobalamine and a ferrous salt having a pH between 3 and 5, by adding to this solution a strong base to bring the pH to a value over 6.2 to precipitate the cyanide group as ferrous ferrocyanide, and then oxidizing the solution with air or oxygen to obtain hydroxocobalamine.  When the ferrous ferrocyanide has been precipitated either further base is added to bring pH to 8.5 to 9 to precipitate excess ferrous salts, the precipitates are filtered off and air or oxygen bubbled into the solution, or the ferrous ferrocyanide precipitate is filtered off, air or oxygen is bubbled into the solution, and ferric salts precipitated in the oxidation are filtered off.  In examples, ferrous chloride and ferrous sulphate are added to aqueous solutions of cyanocobalamine and the bases are sodium hydroxide, potassium hydroxide, barium hydroxide and calcium hydroxide; the hydroxocobalamine is recovered chromatographically on alumina.
Patent GB-1206533-A (GB)
Title: A method of and apparatus for preparing a mixture of plurality of liquids
IPC: G03C1/015
Filed: 1968-01-29
Abstract: 1,206,533. Mixing liquids in metered quantities. FUJI SHASHIN FILM K.K. 29 Jan., 1968 [28 Jan., 1967], No. 4581/68. Heading B1C. [Also in Division B8] Liquids to be mixed in a tank ST are dispensed in measured quantities (see also Division B8) by vertically reciprocating measuring cylinders M 1-n  which are supplied from tanks C 1-n  in which the liquid level is controlled; on the upward stroke the measuring cylinders discharge through overflow devices O 1-n  (see Figs. 2-5, not shown). The measured amount may be varied by changing the measuring cylinders or their stroke, or altering the height of the overflow. The order of, and time interval between, the dispensing of the several liquids may be automatically controlled.
Patent GB-537196-A (GB)
Title: Improvements in brakes for invalid chairs, perambulators and other wheeled vehicles
IPC: B62B5/04
Filed: 1940-03-13
Abstract: 537,196. Vehicle brakes. CHESTON, A. S., and CORBER, F. H. March 13, 1940, No. 4667. [Class 103 (i)] A brake for invalid chairs, perambulators or other vehicles comprises a transverse rigid bar 4 mounted in guide slots 6 and moved bodily to engage wheels at opposite sides of the vehicle simultaneously. As shown in Fig. 1 bars 4 applied to two pairs of wheels are connected by toggle members 8, 9 operated by means of either side levers 5 attached to the members 9.
Patent GB-350579-A (GB)
Title: Improvements in or relating to hooks or like retaining devices
IPC: F16B45/02
Filed: 1925-02-20
Abstract: 350,579. Load-dropping hooks. VICKERS, Ltd. and LUCAS, O. D., Vickers House, Broadway, Westminster. Feb. 20, 1925, No. 4732. [Class 9 (ii).] A hook or a pair of hooks A, A for holding the eye F of a load is held closed by a toggle device B, B abutting between the hooks and a slidable locking-bar C held by a catch d which is substantially free from stress due to the load. The catch d is pivoted at d<1> and engages with a notch c in the bar C, the contact surfaces between the catch and the notch being concentric with the pivot d<1> of the catch. To drop the load, the catch d is pulled by a flexible connection attached to the end d<4> of a lever D in one with the catch d. After the release of the catch, a projection d<2> integral with the lever D presses the locking-bar C down, preferably through the intermediary of a spring d3. The toggle links then allow the hooks to be opened by the weight of the load or by the additional pressure of the locking-bar on the eye F of the load. When a fresh load is placed in position, the locking-bar is raised and the hooks automatically closed. The rise of the locking-bar is limited by a stop e<3>, the position of which controls the position of the toggle device relatively to its dead centre, which determines the force required for the release of the catch d. The spring d<3> may be replaced or supplemented by a spring d<5>. The catch d may be duplicated and the two catches may then be worked by a single pull or by two separate pulls, one for releasing one catch and the other for releasing the other catch and depressing the locking- bar.
Patent GB-112211-A (GB)
Title: Improvements relating to Change Speed Gear for Motor Driven Vehicles and for the Driving Shafts of Machinery.
Inventor: SABEL FRITZ
IPC: F16H3/08
Filed: 1917-04-02
Abstract: 112,211. Sabel, F. April 2, 1917. Controlling variable-speed gearing.-In toothed, belt, or chain variable-speed gearing for motor-vehicles and for other machinery and, according to the Provisional Specification, for machine tools, the clutches l are normally held out of action against springs m by a sliding rod r engaging links o connected to levers n bearing on the clutch sleeves. A gap r<1> in the rod r allows engagement of one clutch at a time.
Patent GB-1491343-A (GB)
Title: Naphthacenequinone derivatives
IPC: C08L67/00
Filed: 1975-02-04
Abstract: 1491343 Naphthacenequinone compounds MITSUI TOATSU CHEMICALS Inc 4 Feb 1975 [7 Feb 1974] 4766/75 Heading C4P Naphthacene quinone derivatives have the formula in which R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP> and -CO-X-CO- are substituents in the optional positions on the rings of the compound; R<SP>1</SP> and R<SP>3</SP> may be the same or different and represent a hydrogen atom, a chlorine atom, an hydroxyl or an amino group; R<SP>2</SP> represents a radical represented by the formulae: (i) -COOR<SP>4</SP> in which R<SP>4</SP> represents a hydrogen atom, an alkyl, alkoxyalkyl, cyclohexyl or aralkyl group or a cation; in which R<SP>5</SP> and R<SP>6</SP> may be the same or different and represent a hydrogen atom, an alkyl or aryl group; (iii) -CONH-R<SP>7</SP> in which R<SP>7</SP> represents an amino group; in which R<SP>8</SP> and R<SP>9</SP> may be the same or different and represent a hydrogen atom, an alkyl, alkoxyalkyl, or aryl group; (v) in which R<SP>10</SP> represents a methyl group or a chlorine atom, or (vi) -SO 3 -R<SP>11</SP> in which R<SP>11</SP> represents a cation; and X represents a hydrazo or an aromatic diamino group. The compounds may be used as dyes or pigments with synthetic or semisynthetic high molecular weight organic compounds, such as amino-formaldehyde resin, polymers or copolymers of methacrylic acid ester, vinyl chloride, vinylidine chloride, olefines or styrene, polyamides, polyesters, or plyacrylic, polyacetal, phenol, alkyd, epoxy, cellulose acetate, nitrocellulose or cellulose ester resins.
Patent GB-283844-A (GB)
Title: Improvements in or relating to apparatus for use in drying the hair
IPC: A45D20/08
Filed: 1927-02-21
Abstract: 283,844. Meyer, W. Jan. 17, 1927, [Convention date]. Screw fans.-Apparatus for use in drying the hair comprises a casing 5 fitted with a reflector 40, at the focus of which a high power electric lamp 42 is placed, a fan 52 driven by a motor 20 being fitted in an axial opening 50 in the reflector. A discharge tube 6 is attached to the casing 5, and is provided with two or more fins 80 which project into the stream of air and prevent swirling. The motor 20 is mounted in a sleeve 19 formed on a spider 14, preferably made as a casting and attached to the inlet end of the casing 5. Blocks 28 of porcelain &c. are clamped to a flange 26 of the spider, and support a heating coil 35, whereby air is heated as it is drawn by the fan through the openings 24 between the arms of the spider. These openings are preferably covered by a screen 25. An arm 18 of the spider has a hollow boss 68, to which a three-way switch 65 is secured. This is connected by suitable leads to the current supply and to the motor, heating coil, and lamp. By this means, the motor and lamp may be switched on together, with or without the heating coil, or the current supply may be cut off. A mounting yoke 88 is pivoted to lugs 86 on the member 14. With the arrangement described, radiant heat and light from the lamp are directed through the discharge orifice 8 together with a current of air which may be heated as it is drawn in. According to the Specification as open to inspection under Sect. 91 (3) (a) the apparatus is intended not only for use in drying the hair, but also for similar purposes. This subjectmatter does not appear in the Specification as accepted.
Patent GB-1126296-A (GB)
Title: Improvements in adhesives
IPC: C09J157/02
Filed: 1967-02-01
Abstract: 1,126,296. Laminates. ESSO STANDARD SOC. ANON. FRANCAISE. 1 Feb., 1967 [14 Feb., 1966], No. 4942/67. Heading B5N. [Also in Division C3] A laminate comprises a fibro-cement sheet bonded to a butyl rubber sheet by an adhesive composition comprising a mixture of a petroleum resin dispersed in an elastomer latex and a cement. Suitable elastomers are butyl rubber, natural rubber, neoprene, and S.B.R. Suitable cements are Portland cement, alkali-free cement, and quick-setting cement.
Patent GB-501229-A (GB)
Title: A process for the production of the formaldehyde-sulphoxylate derivative of dihydroxydiaminoarsenobenzene base
IPC: C07F9/74
Filed: 1938-02-17
Abstract: 501,229. Organo-arsenic compounds. ZAKLADY CHEMICZNE HYDROX SPOLKA Z OGRANICZONA ODPOWIEDZIALNOSCIA, and ENDE, A. Feb. 17, 1938, No. 4964. [Class 2 (iii)] For the preparation of 3 : 3<1>-diamino-4 : 4<1>. dihydroxyarsenobenzene-formaldehyde sulphoxylate in the pure state, a salt of the crude arsenobenzene base is dissolved in an aqueous organic solvent and treated first with a small quantity, about 10-20 per cent, and then with the remainder of the requisite amount of sodium formaldehyde sulphoxylate, the intermediately-formed precipitate resulting from the first treatment being rejected. Solvents mentioned are aqueous methyl alcohol, ethyl alcohol and glycol. Examples described the treatment of the hydrochloride of the base. Specification 7865/12, [Class 2 (iii)], is referred to.
Patent GB-1012763-A (GB)
Title: Novel decorative articles
IPC: B32B27/00
Filed: 1964-02-05
Abstract: 1,012,763. Laminates. RHONE-POULENC S.A. Feb. 5, 1964 [Feb. 6, 1963], No. 4967/64. Heading B5N. Decorative laminates comprise a layer of plastic material having a mother-of-pearl pigment dispersed therein and bearing, on one side a woven, unwoven or butter fabric or the impression of such a fabric, and on the other a transparent plastic layer. The plastic layers may be of cellulose-acetate, -acetobutyrate or acetopropionate, polymers and copolymers of vinyl chloride and vinyl acetate, polyvinyl alcohol and its acetals, polycarbonates, polyamides, polyterephthalates, and polymers and copolymers of acrylonitrile. The fabric layer when used may comprise a gauze or a watered fabric, and this layer may be removed, after laminating, to produce a more transparent or translucent product. Alternatively two layers of fabric may be used or partial layers of material, such as fabric or cardboard, cut out for example in the form of a design, may be included with the fabric layer or layers. The mother-of-pearl pigment may be made from fish scales, lead carbonate, lead iodide, lead phosphate, mica, talc or steatite, lead carbonate being preferred. The surface layer may be plain or coloured. The decorative effect is created by variations in light reflection due to the pigment and the fabric and/or insert layers or the impressions produced by the strippedoff fabric. A number of assemblies may be hotpressed together, for example a stack of five double assemblies each consisting of transparent layer, pigmented layer, fabric, fabric pigmented layer, transparent layer, and having polished plates between them, may be hotpressed between cushioned polished plates in each of nine daylights of a hydraulic press, the double assemblies being separated into individual laminates after cooling. Such a laminate from which the fabric layer has been removed may be heated and suction moulded to produce a base for a paper pad for office use.
Patent GB-535495-A (GB)
Title: Improvements in electromagnetic charging switches and regulators
IPC: H02J7/22
Filed: 1940-03-18
Abstract: 535,495. Electromagnetic switches BOSCH GES., R. March 18, 1940. No. 4969. Convention date. April 14, 1939. Addition to 527,963. [Class 38 (v)] In a combined charging switch and voltage regulator according to the parent Specification, the core 17 of the auxiliary magnet and its winding 18 are disposed on the inner side of the limb 13 and between the limb 13 and the armature 11.
Patent GB-755440-A (GB)
Title: Improvements in or relating to transistors
IPC: H01L23/02
Filed: 1954-02-19
Abstract: 755,440. Transistors. WESTINGHOUSE BRAKE & SIGNAL CO., Ltd., LANGRIDGE, A., and HUNTER, D. J. Dec. 14, 1954 [Feb. 19, 1954], No. 4973/54. Class 37. In a transistor assembly a wedge-shaped insulating member comprises a groove in each inclined surface and each point contact engages in a corresponding groove and contacts the crystal surface. In Fig. 2 two metal tubes 9 pass through a supporting disc 8 integral with the wedge-shaped member 1 whose thin end contacts the crystal 5. In the sub-assembly of Fig. 1 the two resilient point contacts 6 secured to support-rods 7 engage grooves 2 and to produce Fig. 2 the support rods 7 are slid downwards through the metal tubes 9, thereby moving the resilient point contacts 6 down their respective grooves and causing them to exert the required pressure upon the crystal 5. The support rods 7 are then spot-welded to the metal tubes 9. The crystal 5 is mounted upon a disc-shaped base contact 10 and the assembly is enclosed in an insulating or metallic tubular housing 11. In a modification, Fig. 3, the grooves 2 are formed near one edge of the wedge 1; rotation of the crystal about its axis of symmetry then permits the point contacts 6 to explore a circle (shown dotted) on the crystal surface. The latter may also be explored by rotating both the wedge and the crystal. When a satisfactory position on the crystal surface has been found the wedge-shaped member and the base contact are fixed in position by application of a suitable adhesive.
Patent GB-730915-A (GB)
Title: Improvements in or relating to the production of ª†-benzene hexachloride
IPC: C07C17/38
Filed: 1953-02-23
Abstract: Benzene hexachloride containing at least 95 per cent of the gamma isomer is obtained by dissolving a crude mixture containing gamma benzene hexachloride and its isomers in a lower alcohol containing 1-6 carbon atoms, e.g. methanol, the boiling-point of which is raised above the normal atmospheric by raising the pressure and/or by adding a substance which increases the boiling-point of the solvent without impairing its dissolving power, saturating the solvent with the crude benzene hexachloride mixture at a temperature above the normal boiling-point and cooling, suitably to 40-50 DEG  C., to crystallize the gamma isomer. Suitable substances which may be added to increase the boiling-point of the solvent include hydrocarbons, aromatic compounds, halogenated hydrocarbons, halogenated aromatic compounds, phenols, phenolic ethers, cyclic ketones, terpenes and esters of aliphatic or cyclic acids, particularly those substances which have a low vapour pressure and favourable cryoscopic properties, e.g. low molecular weight, low vapour pressure compared with the solvent, inability to form low-boiling azeotropes with the solvent and chemical inertness.  The process may be carried out semi-continuously by using the mother-liquor from a previous crystallization as the solvent for a fresh quantity of crude benzene hexachloride.  The amount of delta isomer present in the crude benzene hexachloride should preferably be kept below 5 per cent.  In examples gamma benzene hexachloride is obtained from crude benzene hexachloride according to the invention by crystallizing from (1) methanol containing trichlorobenzene; (2) methanol containing decahydronaphthalene; (3) methanol containing xylene; (4) methanol containing cyclohexanone; and (5) methanol under superatmospheric pressure.
Patent GB-845793-A (GB)
Title: Gas-lubricated shaft bearings
IPC: F16C32/06
Filed: 1958-02-17
Abstract: 845,793. Bearings. SULZER FRERES S.A. Feb. 17, 1958 [Aug. 30, 1957], No. 5109/58. Class 12 (1). In order to avoid secondary rotation of the axis of a rotor shaft 3 about the axis of a fixed bearing 1 of a gas-supported bearing, e.g. for a high-speed machine with a low weight rotor, an intermediate member in the form of a bush 2 having a mass much smaller than that of the rotor 3 is inserted, with clearance gaps 4, 5, between the bearing 1 and the rotor 3, secondary rotation of the rotor then occurring only at a relatively high speed lying beyond the normal operational speeds of the machine. During operation gas under pressure passes through passages 6 in the bearing 1 to the gaps 4 and then through passages 7 in the bush 2 to the inner gap 5 from which it emerges at 8, 9, the bush being rotatable but held against axial movement. In a modification the bush has a number of circumferentially-spaced, longitudinal, passages, each of which communicates with a main-gas-passage in the fixed bearing and has a number of radial outlets leading to the space 5, the bush, radially movable, being secured by a stud against rotation. The stud may be omitted so that the bush can rotate the main-gas passages, in this case, leading to an annular channel extending around the inner surface of the fixed bearing. The bush may be coupled to the shaft 3 by a key, the stud being dispensed with. If desired, gas at a different pressure from that supplying the passages 6 can be introduced into the main-gas passages. In a further modification, Fig. 5, part-cylindrical members 16, accommodated with clearance gaps 4<SP>11</SP>, 511 in correspondingly-shaped recesses 17 in the fixed bearing 1<SP>11</SP>, are rotatable about axes 21, their cylindrical surfaces 19 supporting the rotor 3. During operation the rotor 3 and the members 16 are supported by gas introduced under pressure into the gaps 4<SP>11</SP>, 5<SP>11</SP>, the members 16 having passages 14, 15, 7<SP>11</SP> for leading the gas to the gaps 5. Alternatively, the passages 15, 7<SP>11</SP> can be fed with pressure gas from the gaps 4<SP>11</SP>, on the passages 6<SP>11</SP>, in which case the passages 14 can be omitted. In a still further modification, each segment has a longitudinal recess along one edge, pressure gas being introduced into the gaps 4 and, if desired, through passages provided in the elements 16 to supply gas to the gaps 5.
Patent GB-932224-A (GB)
Title: Piston-ram assembly
IPC: B25D11/12
Filed: 1962-02-09
Abstract: 932,224. Percussive tools. BLACK & DECKER MANUFACTURING CO. Feb. 9, 1962 [May 5, 1961], No. 5128/62. Class 124. A percussive tool comprises a reciprocable ram 18 and a reciprocable piston 16, a chamber 21 between the piston and ram whereby a compressive gas, such as air, may be trapped therein, and a protrusion 24 on the piston and a recess 26 on the ram normally out of engagement, whereby, when a sufficient amount of gas leaks from the chamber and the ram initially bottoms against the piston, the protrusion acquires a press fit in the recess thereby coupling the piston and ram together for movement in unison and preventing further bottoming of the ram and piston. As shown in Fig. 1, the ram is freely slidable in a cylinder 17 secured by screws 28 to the gear-box 13 of an electrically-driven percussive tool, the piston being reciprocated via the gear-box through a shaft 14 and a crosshead 15. In the inoperative position of the tool, the ram takes up the position shown in Fig. 3. Upon movement of the piston, the air in the chamber 21 is compressed until, at a certain pressure, the ram rapidly moves and strikes the tool bit 19; retraction of the piston causes a suction in the chamber 21 and the ram returns. After considerable use, a sealing ring 23 on the piston wears and thereby permits leakage of the air from the chamber until the piston and ram abut and lock together as previously described in order to prevent damage by continual hammering of the drive elements in the tool. A groove 29 is provided in the ram wall so that at a certain relative position of the ram and piston, the air pressure in the chamber is able to adjust to its normal working level.
Patent GB-271172-A (GB)
Title: Improvements relating to means for delivering petrol and like liquids in measured quantities by volume
IPC: B67D7/16
Filed: 1926-02-23
Abstract: 271,172. Bedford, F. Pilmore-. Feb. 23, 1926. Float-operated quantity indicators.-In a petrol or like supply device, a visible measuring chamber 1 is fitted with a plurality of quantity indicators, such as numbers 10, which are brought into view successively as the chamber fills. The numbers 10 are mounted on float-actuated arms 11 pivoted at 12 alternately on each side of the chamber. A stop 14 limits the rise of each arm. The level of the liquid at any moment is indicated by a horizontal double-headed arrow, mounted on a float, and showing through the window 6.
Patent GB-1102831-A (GB)
Title: Building units and use of same
IPC: E04B1/94
Filed: 1964-02-06
Abstract: 1,102,831. Laminates; moulding building units. A. H. BUTCHER & SONS Ltd., WILLIAM OLD (RESIFORM) Ltd., H. BUTCHER, and W. J. OLD. 5 Feb., 1965 [6 Feb., 1964], No. 5149/64. Headings B5A and B5N. [Also in Division E1] A building unit comprises a layer of synthetic thermosetting resin, which layer is reinforced with glass fibre and incorporates a perforated asbestos based board. A preferred unit as shown in Fig. 1 is made by pouring a mixture of a polyester resin with sand or natural stone dust into a mould, applying a chopped strand glass fibre mat thereto and adding polyester resin to form a consolidated layer 10, a perforated asbestos cement board 11 being pressed into the reinforced resin layer and the resin cured, a plurality of reinforcing ribs 12 each formed in a mould from polyester impregnated glass fibre mats 13 and perforated asbestos cement boards 14 bonded thereto, the reinforcing members being filled with loose resin bonded glass fibres 15 and bonded to the sheet by polyester resin 16, glass fibre mats 17 being placed between the ribs and bonded thereto by resin 16, panels 18 consisting of two layers of building board separated by a cellular core being attached to the ribbed unit by timber battens 19. The polyester resin may be replaced by an epoxy resin.
Patent GB-1128304-A (GB)
Title: Terpolymers of high molecular weight and process for preparing them
IPC: B65D19/22
Filed: 1966-02-07
Abstract: 1,128,304. Ethylene/maleic anhydride/dicyclopentadiene terpolymers. FARBWERKE HOECHST A.G. 7 Feb., 1966 [5 Feb., 1965], No. 5244/66. Heading C3P. A high molecular weight terpolymer of ethylene, maleic anhydride and 0À01-2À5% by wt. of dicyclopentadiene is claimed. The terpolymer may be prepared by copolymerizing the monomers in the presence of a free-radical initiator, e.g. benzoyl peroxide or azobisisobutyronitrile and a solvent or diluent, e.g. benzene, at an elevated temperature and preferably under an elevated pressure. In a comparative example the dicyclopentadiene was replaced by hexadiene-1,5.
Patent GB-1524946-A (GB)
Title: Power control for communications system with transponder
IPC: H04N5/00
Filed: 1977-02-09
Abstract: 1524946 Automatic control of power WESTINGHOUSE ELECTRIC CORP 9 Feb 1977 [17 Feb 1976] 05292/77 Heading G3R [Also in Division H4] In a satellite radio system the input power to the satellite 20 is regulated by making use of a small signal-dependent non-linearity of the satellite receiver-transmitter. At the transmitter an additional carrier is provided typically 10dB down in power and 10kHz displaced in frequency, and an intermodulation component with the main carrier produced by the satellite is monitored at a receiver and used to produce a control signal fed back to the transmitter via 30.