baber/WOPTO huggingface dataset:
Patent GB-991810-A (GB)
Title: Improvements in or relating to measurement and/or control
Inventor: BRAMLEY LIONEL NAPIER
IPC: G01G23/18
Filed: 1962-08-30
Abstract: 991, 810. Electric selective signalling. DIGITAL ENGINEERING CO. Ltd. Aug. 13, 1963 [Aug. 30, 1962], No. 33304/62. Heading G4H. In the manufacture of a cylindrical encoder, a reproduction is made from a master encoder of linear form. All or part of the master may be reproduced photographically,with or without enlargement or reduction. Parts of several master encoders may be reproduced for a single encoder. The encoder may have a binary-coded scale, or regularly-spaced markings to produce pulses to be counted. The scale markings may be suitable for optical, electric (brush) or magnetic sensing, being produced in the last two cases by printed circuit techniques (photo-etching, photo-engravure) optically via the intermediary of a photographic negative produced from the master encoder. The encoder may be mounted in a circular cylindrical drum structure to form, e.g. a shaft digitiser in a weighing machine giving binary-coded electric signals which control an electric typewriter or card punch. Alternatively, as shown in the Figure, a non-linear output may be produced representing the position of shaft 12 by a cam member 11 to which the encoder strip 13 is attached at A, the other end of the strip being attached to a circular cylinder 15 lightly sprung to keep the strip 13 taut. Strip 13 passes through guide rolls 14, being sensed at BB or CC. The non-linearity may be present to compensate for non-linearity in something controlling the position of shaft 12.
Patent GB-596842-A (GB)
Title: Improvements in or relating to means for preventing the condensation of moisture on surfaces of refrigerated chambers
IPC: F25D21/04
Filed: 1945-12-10
Abstract: 596,842. Refrigerators. HALL, Ltd., J. & E., HALES, R. T., and PACKER, L. A. Dec. 10, 1945, No. 33306. [Class 29] To prevent deposition of moisture on the metal surfaces 18 of refrigerated chambers adjacent the lids 11, pipes 13 through which circulates hot liquid or gaseous refrigerant are arranged adjacent the lids. The pipes are led from between the compressor and condenser or condenser and expansion valve, and pass on the outside of the insulation to avoid heating the chambers.
Patent GB-483758-A (GB)
Title: Improvements in and relating to the purification of gaseous mixtures and particularly fuel gases
IPC: C10K1/20
Filed: 1936-12-04
Abstract: 483,758. Gas -- purifying processes. HOLMES & CO., Ltd., W. C., MITCHEL.L, G. P., and KEILLOR, G. E. H. Dec. 4, 1936, No. 33341. Drawings to Specification. [Class 55 (ii)] The humidity and temperature of fuel gas prior to its entry into the purifier box containing iron oxide are independently controlled. Apparatus comprising a chamber with a gas inlet and outlet and housing the usual low pressure steam heated cast-iron radiator over which water is distributed from a regulatable syphon feed, is inserted in each of the pipes leading from the valve box to each purifier box. A trapped funnel is associated with the siphon and the water may be delivered on to a layer of porous material applied to the surface of the radiator.
Patent GB-1497016-A (GB)
Title: Screening machines
IPC: B01D29/62
Filed: 1976-08-11
Abstract: 1497016 Screening machine BLACK CLAWSON CO 11 Aug 1976 [11 Aug 1975] 33430/76 Heading BID A screening machine, e.g. for paper pulp, comprises a casing 12, a perforated screen cylinder 26 fixed within the casing, an inlet 22 directing material to be screened to within the screen, an outlet 36 for removing accepts screened material, and a rotor 28 mounted for rotation within the screen and including cleaning elements, e.g. foils 30, for movement adjacent the screen inner face to keep the perforations unobstructed; the perforations being arranged in circumferentially arranged bands 64, longitudinally spaced along the screen and the circumferential bands being interrupted at spaced intervals by imperforate cantilever sections 80 (Fig. 4) extending generally longitudinally of the screen; and the cantilevered sections and cleaning elements being of such number and so arranged with respect to each other that the cleaning elements and cantilever sections cannot be simultaneously aligned with one another. The cantilever sections may carry clips 82 for attachment of external strengthening rings 66 for the cylinder. The illustrated apparatus further comprises an inlet chamber 18 into which inlet 22 opens tangentially and having an annular trough 20 with an outlet 24 for removal of material accumulating therein and an outlet 40 communicating with a chamber 38 for rejects. The screen perforations may be in the form of elongated slots parallel to the screen axis and widening from the inlet face to the outlet face.
Patent GB-740599-A (GB)
Title: Improvements in or relating to stabilisation of polysulfone resins
IPC: C08K5/372
Filed: 1953-12-02
Abstract: A thermally stable polysulphone resin is obtained by incorporation of a reaction product obtained from hydrogen sulphide and 4-vinyl-1-cyclohexene in the presence of specified catalysts.  The reaction product may be a vinyl cyclohexanethiol (see Group IV (b)) or a liquid or solid polymeric vinylcyclohexanethiol and may be produced by continuously introducing the components into contact with the catalyst.  The catalyst may be boron fluoride/water, boron fluoride/hydrogen fluoride, boron fluoride/phosphoric acid, hydrogen fluoride, acid-treated montmorillonite, subbentonite clay, silica/alumina and mixtures of glacial acetic acid with potassium persulphate, alkali metal perborate, benzoyl peroxide or t.-butyl hydroperoxide.  The products may be extracted with ether and fractionated.  In examples the polysulphone resin is derived from 1-butene.  The stabilizer may be added to the resin in the form of a powder, in solution, e.g. in benzene, or as an aqueous dispersion. An aqueous dispersion of stabilizer may otherwise be added to the resin latex prior to coagulation.  Specifications 686,446, 702,711, 713,470 and U.S.A. Specifications 2,128,932 and 2,453,039 are referred to.ALSO:Reaction products of 4-vinyl-1-cyclohexene and hydrogen sulphide which include vinylcyclohexanethiols are produced in the presence of an acid-type catalyst at a temperature of 150-300 DEG F., a pressure of 500-2000 p.s.i.g., a space velocity of 0.1 to 10 volumes of reactants per volume of catalyst per hour, and using a mol. ratio of hydrogen sulphide to vinylcyclohexene in the range 1:1 to 6:1.  The vinylcyclohexanethiols may be vacuum distilled and purified by means of cadmium mercaptide and may have a B.P. of 98-101 DEG  C. at 35 mm. Hg.  Catalysts specified are boron fluoride/water, boron fluoride/hydrogen fluoride, boron fluoride/phosphoric acid, hydrogen fluoride, acid-treated montmorillonite, subbentonite clay, silica/alumina and mixtures of glacial acetic acid with potassium persulphate, alkali metal perborate, benzoyl peroxide or t-butyl hydroperoxide.  The products may be used to thermally stabilize polysulphone resins (see Group IV (a)).  Specifications 686,446, 702,711 and 713,470, [all in Group IV(a)], are referred to.
Patent GB-816952-A (GB)
Title: Improvements in and relating to bed tables and the like
Inventor: STEARN ALFRED FLETCHER
IPC: A47B23/00
Filed: 1954-11-18
Abstract: 816,952. Bed tables. DOHERTY & SONS Ltd., E. Nov. 17, 1955 [Nov. 18, 1954], No. 33484/54. Class 52(3) A bed table or the like, with legs 1 connected by cross pieces 2. hinged to the table top 3 near each end of the table and held in an extended position or a position in which the legs lie folded beneath the table top by a leaf spring has a carrying handle 9 secured to each cross piece 2 so as to project above the plane of the table top when the legs are extended and which passes through a slot 11 in the table top to lie below its plane when the legs are folded. The outer ends 10 of the table top are, curved upwardly. Ledges 12 with stub legs 13 are provided on the longer sides of the table so that it may be used as a tray when the legs are folded.
Patent GB-761850-A (GB)
Title: Improvements in or relating to delay lines for microwave tubes
IPC: H01J23/24
Filed: 1953-06-29
Abstract: 761,850. Travelling-wave tubes; magnetrons. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. June 29, 1953 [June 28, 1952], No. 33619/55. Divided out of 761,768. Class 39(1). [Also in Group XL(b)] A ladder type delay line for use in microwave tubes has the ends of at least one set of alternate rungs 2<11> bent at right angles ; the ends of the two sets of alternate rungs 2<1>, 2<11> are secured to different surfaces. By lengthening the paths of circulating currents between neighbouring circuits, the magnetic coupling is reduced relative to the electric coupling and the pass band is widened. Both sets of rungs may have bent ends in the same or opposite directions. The line may be used in travelling wave tubes of forward or backward wave type, with or without a crossed magnetic field and of linear or circular construction. A closed circular line may constitute the anode system of an ordinary magnetron. It is stated that strapping is not necessary.
Patent GB-348161-A (GB)
Title: Improvements in or relating to the production of artificial silk threads
IPC: D01H1/06
Filed: 1929-11-06
Abstract: 348,161. Delivering artificial silk during twisting. BRAND WOOD, J., 2, Westbourne Road, Birkdale, Southport, Lancashire. Nov. 6, 1929, No. 33721. [Class 120 (ii).] Artificial silk threads x wound on a large spool 1 are led to a twisting device 11 without being passed over the end of the spool which is mounted vertically on a turntable 3 having a friction surface, e.g. ebonite or wood, and supported in a bar 4, the lower end of its spindle 5 carrying a friction disc 6 contacting a driven disc 7.
Patent GB-747587-A (GB)
Title: Improvements in alternators
Inventor: CLARK LEONARD JACK
IPC: H02K21/04
Filed: 1953-12-04
Abstract: 747,587. Alternators. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 3, 1954 (Dec. 4,1953], No. 33815/53. Class 35. In order to assist the residual magnetism of an alternator having an exciting winding fed from the A.C. output of the machine through rectifiers, permanent magnets are located in the magnetic circuit of the machine. Fig. 2 shows part of an alternator salient pole rotor carrying an exciting winding 13 which is held in place by end members 14, 15. Bar permanent magnets 16, 17 are mounted at each end of the pole between the end laminations and the adjacent end member 14 or 15, and these magnets are located in radial slots of spider members 18, 19. One such spider 18 together with its magnets 16 is shown in Fig. 3. The polarity of the magnets 16, 17 corresponds with that of the associated poles when the latter are excited by their exciting winding 16. Because the spider slots accommodating the magnets are open at their periphery damper bars 21 are so positioned that the magnets are not displaced by centrifugal force.
Patent GB-1429823-A (GB)
Title: Drive system
IPC: H02K41/02
Filed: 1973-03-06
Abstract: 1429823 Dynamo-electric machines P COXEN 6 March 1973 33846/75 Divided out of 1429822 Heading H2A An electromagnetic drive system comprises a first stator 70 and armature 74, at least one second stator 76 and at least one second armature 92, the latter being moved linearly in response to a signal indicative of the instantaneous position and direction of movement of the first armature. The drive system is shown applied to a sewing machine. The first armature is electrically conductive and non- magnetic and carries a needle 38. The second armature is permanently magnetized and drives a bobbin carrier 52. The first stator carries windings 64, 66 energized from a single phase supply through a phase shifting capacitor and an oscillating switch 126, Fig. 6 (not shown), arranged to cyclically reverse the phase difference between the winding currents so that needle 38 is oscillated vertically. Alternatively, the stator may only move the needle downwards, the needle then being returned by a spring. The armature 74 carries permanent magnets which interact with stationary coils to feed to the second stator 76 the signals indicative of the movement of the first armature. Stops such as 164 may be provided to limit the movement of the two armatures.
Patent GB-964181-A (GB)
Title: Improvements in or relating to drives for reaping machines
IPC: F16H23/04
Filed: 1961-09-21
Abstract: 964,181. Linkwork. BUCHER-GUYER A.G. MASCHINENFABRIK. Sept. 21, 1961 [Oct. 3, 1960], No. 33878/61. Heading F2K. An axial piston hydraulic motor 2 actuates a rotatable wobbler plate 5 through a thrust collar 14 mounted on the plate 5, the collar 14 being mounted on gimbals in a housing 1 and connected with a rocking lever 23. The thrust collar 14 is mounted on the wobbler 5 through a thrust bearing 16 and is carried in bearings 18 in a rocking ring 20 carried in bearings 22 in the housing 1, the ring 20 being connected to a rocking lever 23 which may drive part of a reaping machine. The wobbler plate 5 is carried in a bearing 9 and has a shaft 6 bearing a pulley 11 or a flywheel.
Patent GB-175788-A (GB)
Title: Improvements relating to electrical transformers
IPC: H01F27/30
Filed: 1920-12-01
Abstract: 175,788. Metropolitan-Vickers Electrical Co., Ltd., (Westinghouse Electric & Manufacturing Co.). Dec. 1, 1920, Transformers -Transformer coils 2 are braced against movement in the direction of their faces and side edges by means of frames 4, 5 connected by bolts 8, 9, and by side plates 6 connected by bolts 7, and endlong movement of the coils is prevented by placing bracing- beams 12 across the tops and bottoms of the coils at right-angles to the plane of the coils. If insulating-members 10, extending beyond the ends of the coils, are provided between the coils, block members 11 are placed between the ends of the coils and the bracing-beams, in order to make the effective lengths of the coils substantially equal to the lengths of the insulating-members. The bars 12 are enclosed in insulating- channels 16 and secured to the frames 4, 5 by bolts 13, cross-bars 14 being provided to strengthen the structure.
Patent GB-1147121-A (GB)
Title: Process for producing crystalline olefin polymers
IPC: C08F10/00
Filed: 1967-07-24
Abstract: 1,147,121. Polymerizing mono-olefins. MITSUBISHI PETROCHEMICAL CO. Ltd. 24 July, 1967 [27 July, 1966], No. 33965/67. Heading C3P. Crystalline olefin polymers are made by polymerizing at least one olefin in the presence of a catalyst comprising (1) an organoaluminium compound of the general formula AlR 2 X where R represents a hydrocarbon residue and X a halogen, (2) a halide of a transition metal of Group IV, V, or VI, of the Periodic Table of Elements and (3) an unsaturated ether, or aromatic ether. Compound (1) may be diethyl or di-iso-butyl aluminium chloride. Compound (2) may be TiCl 3 , TiBr 3 , TiCl 4 , ZrCl 4 , VCl 3 , CrCl 3 , or MoCl 3 . Specified ethers are benzyl, benzyl phenyl, benzyl isoamyl, diallyl, allyl phenyl, isopropyl vinyl, isobutyl vinyl, iso-octyl vinyl ether, and anisole. Hydrogen may be present during the polymerization, and also hydrocarbon solvents. Exemplified polymers are polypropylene and copolymers of ethylene and propylene. The polymers may be extracted with boiling heptane.
Patent GB-919055-A (GB)
Title: Production of vinyl acetate
Inventor: BARBOUR WILLIAM ARTHUR SHUTE
IPC: C07C/
Filed: 1960-10-05
Abstract: In a process for the preparation of vinyl acetate by the reaction of acetylene with acetic acid, the vinyl acetate is recovered from the reaction product by cooling to separate acetylene saturated with vinyl acetate, acetaldehyde, and acetic acid vapours, from the mixture of vinyl acetate and acetic acid, contacting the saturated acetylene with liquid acetic acid to remove vinyl acetate and acetic acid, heating the mixture of vinyl acetate and acetic acid to remove remaining acetylene and separating the vinyl acetate from the acetic acid.  The reaction product may be cooled in a heat exchanger preheating the acetylene, preferably to between 20 and 30 DEG C., and the acetic acid wash is preferably in countercurrent flow in an absorption column such as a sieve plate column with intercoolers. Acetylene is removed from the vinyl acetate and acetic acid in a distillation column, and the base product mixture of vinyl acetate and acetic acid is fractionally distilled to separate the vinyl acetate.
Patent GB-1403922-A (GB)
Title: Epoxide moulding compositions containing meta-tolylene diamine and a silicious filler
IPC: C08G59/50
Filed: 1972-07-20
Abstract: 1403922 Moulding compositions UNION CARBIDE CORP 20 July 1972 [21 July 1971] 34090/72 Addition to 1259692 Heading C3B A solid, fusible moulding composition comprises a reaction product of a polyglycidyl compound (I), m-tolylene-diamine (II) and a silicious filler in an amount of 0À5 to 8 times the weight of I. II is present in an amount sufficient to cure I. II may be a 2,4- or 2,6-diaminotoluene or a mixture thereof. I may be a polyglycidyl ether of a polyhydric phenol, a polyglycidyl ester of a polycarboxylic acid or a polyglycidyl derivative of an aromatic amine or aminophenol. The filler may be silica flour.
Patent GB-190487-A (GB)
Title: Improvements relating to pistons for internal combustion engines
IPC: F02F3/00
Filed: 1922-12-14
Abstract: 190,487. Borgo, E. M. Dec. 19, 1921, [Convention date]. Moulds; cores.-In an aluminium or other piston which is made by chill casting or casting under pressure &c. the skirt 5, Fig. 3, is spaced from the head and is connected, to it by the gudgeon-pin bearings 4, a diametral web 6, cut away, as shown, around the gudgeon pin, and by two lateral webs 7, which are connected to the head by diametral webs above the bearings 4. The mould 10, Fig. 5, is in two parts with a diametral core 11 recessed at 11<1> to form the web 6. The spaces between the webs 7 and the piston body are formed by cores 13, 14, the gudgeon-pin bearings being gapped as shown at 4<1>, Fig. 3, to permit the withdrawal of the ccres 14. The contours of the webs 7 and the piojecting portions of the bearings 4 are formed by cores 12, the width of which is less than half the distance a, Fig. 3, while the bore of the bearings 4 is formed by cylindrical cores 15.
Patent GB-856332-A (GB)
Title: Improvements relating to the production of anhydrous boron phosphate
Inventor: THOMPSON RAYMOND
IPC: C01B35/14
Filed: 1957-11-01
Abstract: Anhydrous boron phosphate, BPO4, is produced by preparing a slurry of boric acid particles of such size as to pass a 200 mesh B.S. sieve in aqueous orthophosphoric acid, submitting the slurry to mixing, evaporating to dryness, and dehydrating by calcination at 1000-1300 DEG C.  The mixing of the two acids in equimolar proportions is effected in a turbo-mixer or colloid mill at 80-90 DEG C.  When calcined at above 1050 DEG C. the product changes from an amorphous to a crystalline form.
Patent GB-1510494-A (GB)
Title: Process and installation for continuously loading radioactive or toxic materials into containers
IPC: G21F9/36
Filed: 1975-08-18
Abstract: 1510494 Processing radioactive waste VEREINIGTE EDELSTAHLWERKE AG and OSTERREICHISCHE STUDIENGESELLSCHAFT FUR ATOMENERGIE GmbH 18 Aug 1975 [22 Aug 1974] 34270/75 Heading G6R Particulate solid radioactive or toxic substance is embedded in a solid binder by introducing the binder in liquid form and the substance into a storage vessel 4 which, when full, is replaced by another vessel, sub-atmospheric pressure being maintained in the two vessels during filling and change-over. As shown, concentrated liquid waste is dried in a film evaporator 3 and drops into the drum 4 carried by a support 15 movable about axis 19; molten bitumen is fed through a spray 10 from heated storage vessel 8. When the drum 4 is full, valve 7 and flap 25 are closed and the support 15 is moved so that the full drum is replaced by another drum, the full drum being removed by lowering a base plate 21 of the support 15. A reduced pressure in the evaporator 3 and the filling installation is maintained by vacuum pump 11. In a modification, Fig. 4 (not shown), a third position for the drums is provided where radiocactive combustion ash is introduced by a screw conveyer. Other liquid binders referred to and molten asphalt, tar, thermoplastics, curable liquid synthetic resins, bitumen emulsions, and cement slurry.
Patent GB-1012922-A (GB)
Title: Improvements in or relating to producing thermoelectric members
IPC: H01L35/08
Filed: 1963-08-30
Abstract: 1,012,922. Soldering. WESTINGHOUSE ELECTRIC CORPORATION. Aug. 30, 1963 Aug. 31, 1962], No. 34412/63. Drawings to Specification. Heading B3R. [Also in Division H1]  In producing a thermo-electric member having at least one metallic thermally and electrically conductive contact member joined to a solid body of a material comprising a compound of at least one of, antimony selenium, tellurium and sulphur and at least one metallic element, the or each contact member and the surface or surfaces of the solid body are prewetted with a soft solder comprising lead, tin, lead alloy or tin alloy and having a melting point not exceeding 375 C., the or each contact member is contacted with the solid body and the assembly is compressed at a temperature above the melting temperature of the soft solder to squeeze out excess solder and the assembly is reheated under compression to a temperature below the melting temperature of the solid body. Metallic sulphides, selenides, antimonides and tellurides, e.g. lead telluride, germanium bismuth telluride, germanium telluride and zinc antimonide may be joined to iron, nickel, copper or stainless steel contact members, particular examples being lead telluride joined to a stainless steel contact with lead solder, germanium bismuth telluride joined to a stainless steel contact with tin solder and zinc antimonide joined to a nickel contact with tin solder. A body of zinc antimonide and a body of lead telluride may be joined at one end to a nickel strap and nickel contact caps may be joined to the other end of the bodies. The prewetting may be effected ultrasonically, the first compression may take place in a jig and after cooling to room temperature the second compression may take place in an inert atmosphere at a temperature such that alloying takes place between the thermo-electric material and the residual thin layer of solder.