baber/WOPTO huggingface dataset:
Patent GB-693406-A (GB)
Title: Method of and apparatus for improving the contact stability of continuously adjustable electric transformers and the like
Inventor: SMILEY GILBERT
IPC: H01F29/06
Filed: 1951-07-25
Abstract: 693,406. Transformers and inductances. GENERAL RADIO CO. July 25, 1951, No. 17674/51. Class 38 (ii). [Also in Group XXXVI] An electrical apparatus-such as a variable ratio electric transformer-having a conductor 1 arranged in a plurality of turns and a brush 4 slidable across the turns in engagement with a contact track 7 formed thereon, is characterized by the fact that the conductor is provided at longitudinally-spaced intervals with contact patches 5 formed by coating the conductor with a metal selected from the group comprising gold, platinum, palladium, rhodium, silver and nickel, the patches together forming the contact track engaged by the brush. The use of noble metals for the contact track obviates tarnishing thereof in corrosive atmospheres and thus providing a constant contact resistance, which resistance may be predetermined by the selection of the noble metal and the brush material. Graphs showing contact resistance against periods of use for the metals enumerated above are included in the Specification. Specification 439,567 is referred to.
Patent GB-421046-A (GB)
Title: Improvements in or relating to book-form savings-boxes
IPC: A45C1/12
Filed: 1933-06-12
Abstract: 421,046. Savings boxes. LAW; F. J. R., The Oaks, Walmley, Erdington, Birmingham. June 12, 1933, No. 17722. [Class 18] The lower edge wall of a book-form savings box comprises a fixed part b to which is hinged or pivoted a movable part c carrying a lock p. The part b is secured to the " cover " k of the box by lugs and pins m, and the other two edge walls a, d are also secured by lugs f and pins g. The outer ends of the closure c and wall d are turned back and seat in recesses u in the wall a, and the turned-up sides of closure c engage under lips q on the cover k. The bolt r of the lock co-operates with an in-turned hook 8 on wall a. Serrated guard jaws z for the coin slot are pivoted on a frame y which is secured in position by lugs 2 cut from the wall a and by turning the side flanges 4 of this wall in over the sides of the frame. Notes, when rolled up, can be inserted through an aperture in the fixed part b. Specifications 295,872 and 338,392, [both in Class 18], are referred to.
Patent GB-1260933-A (GB)
Title: Method of manufacturing a glass ceramic material
IPC: C04B37/02
Filed: 1969-04-08
Abstract: 1,260,933. Glass ceramic. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 8 April, 1969 [10 April, 1968], No. 17894/69 Heading C1M. A. glass ceramic material is obtained from a glass, which glass was obtained from a batch of composition (in weight per cent) CaO 24-50; Al 2 O 3  35-57À5; MgO. 0-12; BaO 0-16; Y 2 O 3  0-10; B 2 O 3  0-9; ZrO 2  0-17À5; Li 2 O 0-3; where (B 2 O 3 +ZrO 2 +Li 2 O) is 3-20; by heating the glass for 30-120 minutes at 700- 900‹ C., for 0-120 minutes at 900-1000‹ C., and then for 60-360 minutes at 1000-1200‹ C. The glass ceramicis resistant, to the action of sodium vapour; and may be used as an envelope for discharge lamps. Alternatively it may be used as a sealing element 7 for sealing a lead-in 6 (of, e.g. Mo) to an envelope 1 of dense sintered polycrystallinealumina of at least 99À5% purity. The devitrification may be carried out after sealing with the glass. Specification 1,172,794 is referred to.
Patent GB-561858-A (GB)
Title: Improvements in apparatus for irradiating food stuffs by ultra violet rays
IPC: A23L3/28
Filed: 1942-12-18
Abstract: 561,858. Irradiating foodstuffs. HARDING, E., and VIOROID, Ltd. Dec. 18, 1942, No. 17975. [Class 1 (i)] In apparatus for irradiating foodstuffs with ultra-violet light, a tubular shield 26 is fitted between the lamp 16 and the container 10 for the material to be treated. It may be attached to the lamp by slotted projections 33 engaging studs on the lamp casing, and may have a gallery 28 under which are screened air holes.
Patent GB-624168-A (GB)
Title: Improvements in and relating to keys for use in typewriters and other key-operated machines
IPC: B41J5/12
Filed: 1945-07-13
Abstract: 624,168. Moulding keys for typewriters &c. LANDIS & GYR SOC. ANON. July 13, 1945, No. 18024. Convention date, July 19, 1944. [Class 87 (ii)] [Also in Groups XVI and XIX] The body 6, Fig. 1, of the key is first formed by injection in a mould comprising a lower part 1, an upper part 3 and a core 2. The upper part carries in relief the key inscription 5, which makes a corresponding intaglio impression in the body 6. The part 5 rests on the tapered head of the core. The body 6 is then placed in a second mould comprising lower and upper parts 8, 9, Fig. 2, and a core 10 that leaves empty the space 7 formed by the tapered head of the core 2. Material to form the inscription is then injected through a channel 11 into the space 7 and the intaglio impression 5a. The thin coating on the face of the key is later removed. The dovetail filling in the space 7 anchors the inscription in the key. Other anchoring means are provided (a) by a recess 15, Fig. 4, on the part 3, that forms a projection on the body 6, (b) by a channel 14 formed in the body 6 by a spring wire fixed to the part 3, this channel being later filled with inscription material, or (c) by spring wires loosely held in the part 3, these wires becoming partly embedded in the body 6. In a modified procedure, Fig. 8, flat or curved slides 17, 18 form holes in the key body 6, these holes extending to the inscription space formed by the part 5 and being later filled by injection as in Fig. 2.
Patent GB-1134297-A (GB)
Title: Carbon black
Inventor: KIYONAGA KAZUO
IPC: C09C1/50
Filed: 1967-04-20
Abstract: 1,134,297. Carbon black. UNION CARBIDE CORP. 20 April, 1967, No. 18131/67. Heading C1A. Carbon black is prepared by combusting a liquid or gaseous fuel with a gas containing at least 50% by volume of oxygen, the amount of oxygen being sufficient to completely combust the fuel, the combusted gases attaining 4000-6000‹ F. (2200-3300‹ C.), flowing these gases at an average velocity relative to the burner of at least 1000 ft./sec. during at least.part of the time of contact with the feed material, cooling the reaction products and separating the carbon-black therefrom. The fuel may be combusted with oxygen of at least 95% purity or with oxygen-enriched air, and the off-gases may be recycled to the combustion zone. The carbon black formed may have a surface area of 20-1000 m<SP>2</SP>/g and an average particle diameter of 50 to 550Š. The process may be carried out in the apparatus shown, comprising a mixing head 1 and cylindrical body 2, a latter comprising a combustion zone A and reaction zone B. Combusted gases in A are mixed with feed material which enters per. pendicular to the axis of the conduit 4 via the inlet port 7. In the reaction zone B the walls 35 have a conical shape, the wider portion being at the discharge end of the burner. The burner 2 may be cooled with water flowing in the annular space between 5 and 6.
Patent GB-182488-A (GB)
Title: Improvements in and relating to solutions of cellulose esters
IPC: C08B5/04
Filed: 1922-07-01
Abstract: Anhydrous liquid ammonia is employed as a solvent for cellulose nitrate and acetate and other cellulose esters, in the preparation of solutions and compositions such as are used in the manufacture of artificial silk, films, &c.  Preferably, solution is effected under pressure, and the solvent subsequently evaporated off under reduced pressure and preferably with the exclusion of moisture.ALSO:Anhydrous liquid ammonia may be employed in the first stage of the recovery of silver from photographic films to dissolve the cellulose acetate backing.
Patent GB-941083-A (GB)
Title: Compositions comprising polythene
Inventor: CRAWFORD JOHN WILLIAM CROOM
IPC: C08F297/08
Filed: 1961-05-18
Abstract: 941,083. Ethylene polymer blends. IMPERIAL CHEMICAL INDUSTRIES Ltd. May 9, 1962 [May 18, 1961], No. 18165/61. Heading C3P. A polymer composition comprises polythene which has been prepared by polymerizing ethylene at a pressure above 500 atmospheres and has a density at 23C. not greater than 0À935 and a melt flow index of from 0À1 to 100, and from 1 to 90% by weight of the composition of a substantially hydrocarbon-insoluble block copolymer containing from 5 to 50% of ethylene and containing at least two blocks selected from ethylene homopolymer, propylene homopolymer and ethylene/propylene random copolymer blocks. The block copolymers may be prepared by the alternate polymerization of ethylene and propylene in the presence of a hetereogeneous catalyst suitable for the preparation of propylene polymers insoluble in liquid hydrocarbons, e.g. a combination of titanium trichloride and diethyl aluminium chloride.
Patent GB-1027753-A (GB)
Title: Eradicating or reducing the number of verminous warm-blooded animals
IPC: A01N41/08
Filed: 1964-05-01
Abstract: A composition for use in eradicating or reducing the number of verminous warm-blooded animals comprises a material, e.g. an animal food, which an animal will consume containing from 0.01 to 10% by weight, based on said material, of a cycloalkanesulphonyl fluoride compound having the structural formula <FORM:1027753/A5-A6/1> wherein n is zero or 1, Z is an R or SO2F radical, each R is a hydrogen atom or a methyl or ethyl radical, and the maximum number of SO2F groups in said compound is two.
Patent GB-584851-A (GB)
Title: Electrical apparatus
IPC: H01B3/44
Filed: 1943-11-05
Abstract: Polytetrafluoroethylene is used as insulation in electric apparatus, e.g. for copper conductors, transformers, motors, dynamos, cables, condensers, sparking-plugs, storage battery separators, radio valve sockets, boxes, spacers and supports, formers for coils and resistances, spreaders and insulation for lead-in wires, couplings for high voltage transmission shafts, transmitting crystal holders, spacers for coaxial cables, washers, bearings, bushes and gaskets. Wires may be coated by pressing them between strips of the polymer at a temperature of 400 DEG  C. and a pressure of 200 to 500 lbs. per square inch followed by quenching in water, trimming the coating and, if desired, passing the coated wire through a circular die; by extrusion; or by wrapping with fibres or films of the polymer. Copper conductors covered with polytetrafluoroethylene, the electrical conductivity of which has become impaired by cold-working, e.g. during winding, may be annealed to increase their conductivity by heating to a temperature between 200 DEG  and 400 DEG  C. Fillers, e.g. carbon, titanium and manganese dioxides, lead oxides, silica, barium sulphate, magnesium carbonate, zinc sulphide, calcium chromate, asbestos, powdered mica, fuller's earth, glass fibres and conducting material such as grains or flakes of aluminium, copper, silver, graphite and carbon may be incorporated in the polymer. An example describes an electric motor in which the armature slots and commutator segments and V-ring are insulated with polytetrafluoroethylene film and the armature wound with copper wire coated with the polymer.  The whole assembly is heated to a temperature of 250-275 DEG  C. to anneal the armature winding. Specifications 572,265 and 574,688 are referred to.
Patent GB-585392-A (GB)
Title: Improvements in or relating to ampules
IPC: A61J1/06
Filed: 1943-11-05
Abstract: 585,392. Ampoules. FIELDS, M. R. Nov. 5, 1943, No. 18424. [Classes 81 (i) and 81 (ii)] In an ampoule comprising a tube 1 closed at one end by disc or diaphragm 8, the part of the tube adjacent the closed end is roughened by etching around the entire periphery, and the end of the tube is covered by a liquid-tight film 27 of plastic material adhering to the roughened surface. The ampoule may be of the type used for injections, having a closure plug at each end. The closure disc may be of rubber or a rubber-like material which is self-sealing after piercing by a hypodermic needle, and may be glazed or coated with wax or a plastic material. After insertion of the disc, the end of the tube is etched, for example by dipping in hydrofluoric acid, and a drop of thermoplastic material, such as a toluol solution of acrylic resin containing 30 per cent. solid, is placed on the disc. The drop spreads over the disc and when dry another drop of the same solution, but diluted to, say, 20 per cent. solid is added. In a modification (Fig. 5, not shown) the closure plug extends beyond the end of the tube and the film may be formed by dipping the tube in the thermoplastic material.
Patent GB-279388-A (GB)
Title: Sparking-plug
IPC: H01T13/16
Filed: 1927-07-11
Abstract: 279,388. Mickel, G. Oct. 19, 1926, [Convention date]. Sparking-plugs. - Cooling is promoted by forming an annular groove d in the insulator, and adjacent openings g in the casing. An external sleeve h, regulates the degree of opening. Between the inner parts of the insulator and casing a sleeve e of copper, aluminium or similar material is interposed.
Patent GB-705423-A (GB)
Title: Improvements relating to high frequency velocity modulated oscillators
IPC: H01J25/24
Filed: 1951-08-03
Abstract: 705,423. Velocity modulated tubes. EDISON SWAN ELECTRIC CO., Ltd. Aug. 3, 1951 [Aug. 19, 1950], No. 18448/51. Class 39(1) [Also in Group XL(c)] A klystron oscillator has an annular resonant cavity 7, Fig. 1, surrounding the tube and a gas discharge tube 9 located substantially within and extending circumferentially around at least the major part of the cavity annulus, so that by varying the current in the gas discharge tube 9 the resonant frequency can be altered. In the form shown a velocity modulated tube with buncher and catcher gaps 4, 5 communicating with the same resonator is provided with a gas discharge tube 9 which forms an almost complete toroid and the anode and cathode of which are connected to an adjustable D.C. source. In a modification, Fig. 2 (not shown) a reflex klystron is associated with a similar toroidal cavity and the ends of the gas discharge tube holding its electrodes extend outside the cavity. In a modification, Fig. 3 (not shown) the reflex klystron has an annular resonator of cup shape and has a movable tuning plunger for coarse tuning in addition to the gas-discharge tube for fine tuning. A high frequency choke in the anode lead of the gas discharge tube prevents escape of energy. The gas filling is argon at 0.02-0.35 mm. Hg or helium at 0.20-0.90 mms Hg, numerical intermediate values being indicated, and corresponding values of discharge current and frequency variation being given. The device may be used for automatic frequency control of radio or radar receivers, sweep receivers used in searching for signals, wobulated signal generators or frequency modulated communication.
Patent GB-530480-A (GB)
Title: Improvements relating to expanding bars for supporting reels composed of paper or the like
IPC: B65H75/24
Filed: 1939-06-26
Abstract: 530,480. Collapsable rollers. BELL, J. June 26, 1939, No. 18501. [Class 100 (i)] A collapsable roller for supporting paper &c. rolls comprises segmental shell portions 13 carrying cam followers 16, 17 co-operating with cam surfaces 14, 15 formed on the shaft 10 so that relative angular movement of shaft and shell causes the shell portions to move radially, this movement being guided by the engagement of radial portions 16<SP>1</SP>, 17<SP>1</SP> on the cam followers with guide grooves in bushes 18, 19 mounted on the end portions 11, 12 of the shaft 10. One bush 19 is formed with a clutch portion 24 engageable by a slidable clutch of member 25 to hold the roller in any of a number of expanded positions or in the contracted position. Rubber or metal spring rings 22, 23 resist outward movement of the shell portions.
Patent GB-795224-A (GB)
Title: Improvements in or relating to the manufacture of cylinder blocks for internal combustion engines, or like articles
IPC: B22C11/00
Filed: 1956-06-15
Abstract: 795,224. Cores; making engine-cylinders. GENERAL MOTORS CORPORATION. June 15, 1956 [June 22, 1955], No. 18512/56. Classes 83 (1) and 83 (2). [Also in Group XXVII] An I.C.-engine cylinder-block, or other object having spaced passages therein, is made by supporting a series of spaced cylindrical cores 14, having flattened external-surfaces 22, within cylindrical openings 24 in a second core 16 having corresponding flattened surfaces 26, so that said series of cores are spaced from said second core, filling the space with metal 18, removing the cores, and machining the internal surfaces 40 of the cylindrical walls thus formed, to remove the flattened internal surfaces.
Patent GB-293040-A (GB)
Title: A process for preparing sodium nitrogen compounds
Filed: 1928-06-26
Abstract: 293,040. Deutsche Gold-und Silber- Scheideanstalt vorm. Roessler. July 1, 1927, [Convention date]. Sodium-nitrogen compounds are prepared by the action of sodium hydride substantially free from caustic soda on amino- or imino-compounds with or without a diluent, e.g. toluene. The preparation of the mono-sodium compounds of aniline, monomethyl-aniline, diphenylamine, acetamide, urea, guanidine, phthalimide, succinimide, diacetamide and phenylthiourea and the di-sodium compounds of urea and guanidine is described in examples. An analogous reaction takes place with o- and p-toluidine, m- and p-xylidine, anaphthylamine, p-chloraniline and benzamide; carbazole, benzidine, a-amino-pyridine, p-aminoacetophenone, C-aminotriazole and 2-aminothiazole are also specified as parent materials. Specification 11335/08 is referred to. The Specification as open to inspection under Sect. 91 (3) (a) refers also to the use of potassium hydride. This subject-matter does not appear in the Specification as accepted.
Patent GB-980566-A (GB)
Title: Process for the preparation of eupolyoxymethylenes
IPC: C08G2/00
Filed: 1963-05-10
Abstract: Formaldehyde polymers are prepared by reacting formaldehyde in an inert solvent in the presence as catalyst of an organic peroxide or hydroperoxide with a compound having a reducing action and heating the polymer, in boiling water preferably at a temperature above 100 DEG  C. Specified catalysts are the redox system di-tertiary-butyl peroxide and p, p1-bis-dimethylamino-diphenylmethane.
Patent GB-187188-A (GB)
Title: Method of producing thin-walled valves for steam engines
IPC: B23P15/00
Filed: 1921-07-07
Abstract: 187,188. Lentz - Lokomotiv - Umbau Akt.-Ges., and Lentz, H. July 7, 1921. Making, processes for.-A double-beat valve of light construction is produced by first pressing a steel blank to the approximate shape of the outer contour of the valve. The outer surface is then turned down along the line a, the central boss is bored out and sector shaped openings are stamped or cut out from the inner portion b to leave thin radial ribs.
Patent GB-982026-A (GB)
Title: Sash-runner insert for sliding windows
Inventor: PEMBERTON HECTOR MORRIS
IPC: E06B3/44
Filed: 1961-05-24
Abstract: 982,026. Guides for sash windows. ALLWEATHER ALUMINIUM WINDOWS (AUST.) PROPRIETARY Ltd. May 24, 1961, No. 18831/61. Heading E1J. The guide member 2 inserted in a metal window frame of channel section 13 for a metal sliding sash is composed of semi-rigid material such as polyethylene and has a spacer strip 1 of foam plastic, sponge rubber &c adhered to the inner face of the guide, the outer face having flanges 4, 5 forming top-sash and bottom-sash runs. The extremities of the guides 2 may have complementary connecting parts to form a continuous stretch the end portion of one stretch being devoid of some flanges e.g. 4, 5 and has a row of apertures 7, Figs. 8 and 9 to receive complementary plugs 8, Fig. 8 projecting from the face of an adjoining stretch which is devoid of the remaining flanges viz. the flanges of the channel section 3, see Fig. 8. The inserts 2 are somewhat shorter than guides 13 and have top and bottom inserts shaped to fit the contour of the tread rail and sill members. Specifications 384,534, 982,027 and 982,028 are referred to.
Patent GB-1336404-A (GB)
Title: Electric cell holder
IPC: H04R25/00
Filed: 1972-04-24
Abstract: 1336404 Deaf aids P R MALLORY & CO Inc 24 April 1972 [23 April 1971] 18961/72 Heading H4J [Also in Division H1] A battery case is mounted so that angular movement of the case is used to effect on-off switching. The embodiment relates to use with a hearing aid. The case has two plastics half shells 22, 24 tongued and grooved to be sealed together after insertion of the cell or, as shown, cells. The upper half of the case forms a knob with extended lugs 66 to give a good purchase for elderly or arthritic hands. The lower half of the case forms the actual battery compartment and is apertured at its base and there provided with a free contact plate 20A so that permanent contact 20 though sprung against it is not subject to large frictional forces. The case is snapped into the housing 16 which forms a permanent part of the hearing aid and is retained by a resilient rim 76 and supported for rotation by an arcuate ridge 74. The two cells shown are connected by a welded-on strip 40. At least one of the casing halves is provided with a window 42 on each side of which are camming surfaces 56 and recesses 60. The contact 18 is normally biased by the spring 44 of which it forms part against the surface of the cell (stack) through window 42 to make ON contact. Rotation of the case disengages the contact by the wedging action of the camming surface and the contact eventually drops into a recess 60 which both provides an OFF detent and relieves stress on the spring. The degree of rotation allowed is limited by the engagement of an end stop 52 with a projection on the housing (seen only in Fig. 1), a hollow in the centre of which allows retraction of the spring and laterally supports it during movement of  the switch. After exhaustion of the cells the case and cells are pulled free of the housing and discarded and a replacement unit is snapped in.
Patent GB-800807-A (GB)
Title: Unsaturated acyl isothiocyanates and the production thereof
IPC: C07C331/30
Filed: 1957-06-17
Abstract: Compounds of formula RCONCS, where R is an aliphatic radical containing one or more polymerizable ethylenic double bonds (see Group IV (b)) are copolymerized with vinyl or allyl compounds, such as vinyl chloride, acrylic acid esters, methacrylic acid esters, butadiene, isoprene or styrene.  Polymerization can be performed in solution or emulsion or as a block polymerization. The copolymers have free NCS groups and can be reacted with compounds containing active hydrogen atoms, such as glycerol, triethanolamine or benzidine, to give high molecular weight plastics.  The monomers RCONCS may be copolymerized with hydroxypyrrolidones to produce high molecular weight blood detoxicating agents.  In an example (6) styrene and acryloyl isothiocyante are copolymerized in the presence of azo isobutyric acid dinitrile, and the product reacted with triethanolamine.ALSO:Compounds of formula R.CO.NCS, where R is an aliphatic radical containing one or more polymerizable ethylenic double bonds, are prepared by reacting the acyl halide with an inorganic thiocyanate.  The reaction may be carried out in an inert organic medium and, if desired, a polymerization stabilizer may be present.  Acyl halides specified are the chlorides, bromides and iodides of acrylic, methacrylic, crotonic, sorbic, cyanosorbic, chloracrylic, cyanoacrylic, methyl crotonic and oleic acids and pentene-5-carboxylic acid.  Suitable inorganic thiocyanates include sodium, potassium, calcium, strontium, magnesium, ammonium, lead, ferric, cuprous, aluminium and silver thiocyanates.  The reagents are reacted in equivalent or nearly equivalent amounts.  The reaction is exothermic and is preferably begun at room temperature.  External cooling may be applied, or, preferably, the reaction is carried out under reflux.  After cooling, the inorganic precipitate is removed and the acyl isothiocyanate distilled in vacuo.  The product may be copolymerized with vinyl or allyl compounds, and the copolymers may then be reacted with compounds containing active hydrogen to produce high molecular weight plastics.  The acyl isothiocyanates may be copolymerized with hydroxypyrrolidones to produce high molecular weight blood detoxicating agents.