baber/WOPTO huggingface dataset:
Patent GB-212475-A (GB)
Title: Improvements in oil separators
IPC: F22B37/26
Filed: 1923-06-26
Abstract: 212,475. Sumiyama, R. June 26, 1923. Separators. - Curved guide boards 6 are arranged within a casing 1 the radius of curvature of the boards being gradually reduced towards the edge at which the steam leaves while the cross-sectional area of the passages 5 is gradually reduced. To the guide, boards 6 are secured plates 7 as shown in Fig. 3 forming channels for collecting oil and passing it through holes 9 in the boards to the drain holes 11. Plates 12 of different thicknesses may be fixed to the partitions 4 to reduce progressively the area of the pasage for the steam.
Patent GB-450344-A (GB)
Title: Improvements in and relating to control systems for engine-electric vehicles
IPC: H02P9/00
Filed: 1934-12-10
Abstract: 450,344. Transmitting mechanical power. LIVSEY, D. M., 47, Victoria Street, Westminster.-(Aktieselskabet Frichs; Aabyhoj, Aaby, Aarhus, Denmark) Dec. 10, 1934, No. 16616/35. Divided out of 445,054. [Class 38 (iv)] [See also Group XXXVII] In a control system for engine-electric vehicles the output of a variable-voltage generator supplying one or more traction motors is limited or reduced under the control of protective means operated upon the alteration of the ohmic resistance of a field or commutating winding of a traction motor resulting from an increase of temperature. The field regulator of a generator supplying a motor 16 is operated by an auxiliary motor controlled by a differential relay 33 having windings 34, 35, connected respectively across a resistance 31, which is connected in the main motor circuit and maintained at a constant temperature, and across a commutating winding 32 of the motor 16. When the main current is such that the temperature of the motor rises, the ohmic resistance of the winding 32 changes and the relay 33 is operated to close its contacts 36. This results in the energization of a relay 37 which controls the circuits of the auxiliary motor to cause a movement of the generator field regulator, in a field-reducing direction. In a modification, Fig. 2, not shown, the generator is also protected against undesirable temperature rise, two differential relays being provided, one associated with a traction motor and one with the generator. In this arrangement a single resistance in the main motor circuit is common to both relays.
Patent GB-625358-A (GB)
Title: Improvements in and relating to frequency changers for electrical oscillations
IPC: H04B7/155
Filed: 1947-06-24
Abstract: 625,358. Radio signalling. GENERAL ELECTRIC CO., Ltd., and CLAYTON, R. J. June 24, 1947, No. 16650. [Class 40 (v)] A frequency-changing system suitable for use in a radio relaying station comprises two mixers 12, 17 in cascade between an input amplifier 11 and an output amplifier 19. The incoming wave, which may be frequencymodulated about a centre frequency F3, is mixed at 12 with a wave of frequency F1ŒF2, and one side band (e.g. F3 - F1ŒF2) is selected, amplified at 16, and fed to the second mixer 17. A wave of frequency F is also fed to the mixer 17 and a wave of frequency F3ŒF2 is selected from the mixer output and may be passed through an amplifier 19 to the aerial 20. Two local oscillators are provided, one of fairly high frequency F1 which need not be stabilized as it does not affect the outgoing frequency, the other a stable oscillator of fairly low frequency F2. The frequency F1 is fed to the mixer 17 through an amplifier 18, and the frequency F2 is mixed at 15 with the frequency F1 to produce a frequency F1+F2 for feeding to the mixer 12.
Patent GB-776216-A (GB)
Title: Improvements in or relating to the potting of electrical apparatus
IPC: H01F27/22
Filed: 1955-06-10
Abstract: A potting material for electrical apparatus consists of discrete particles of fused alumina, each particle being surrounded by a layer of silicone resin.  The particles are preferably of a size that will pass through a sieve having openings of 0.0166 inch and the silicone resin is applied to the particles in the form of a dilute solution. A satisfactory solution consists of between 1 part and 5 parts of silicone resin to 100 parts of a solvent such as xylene.  The coated particles are then dried and baked for at least one hour at a temperature between 385 DEG F. and 415 DEG F. until cured.  The silicone resins are polyorganosiloxanes in which the most common organic substituents are alkyl, aryl or aralkyl radicals.  The more common silicones are ethyl silicone and methylphenyl silicone.
Patent GB-1423531-A (GB)
Title: Terminal member for circuit interrupter
IPC: H01R4/36
Filed: 1973-04-09
Abstract: 1423531 Terminal blocks WESTING- HOUSE ELECTRIC CORP 9 April 1973 [18 April 1972] 16827/73 Heading H2E A terminal structure comprises a conductive block having a front 90, a rear and two ends, two conductor receiving openings 87, 88 extending parallel into the block from one towards the other of said ends and spaced apart in a front to rear direction, two connector receiving openings 89 with connectors 85, 86 each extending from the front of the block and communicating with an opening 87 or 88, the opening 89 which communicates with opening 88, which is nearer the rear being nearer said other end than the other opening 89, and the longitudinal axes of openings 87, 88 being located in a front to rear direction on opposite sides of a plane parallel to them. Said one end is stepped such that the difference of the proximity of portions 100 and 102 to side 94 equals the displacement of one cavity 89 with respect to the other. Step portion 92 has holes for mounting bolts. Another embodiment (Figs. 4 and 7, not shown) has a third conductor receiving cavity in the set back portion 100. A third embodiment (Figs. 8 to 10, not shown) has a fourth conductor receiving cavity in portion 102 and communicating with a connector receiving cavity. Connectors are included in a circuit breaker (Fig. 1, not shown), much of which is described.
Patent GB-1401143-A (GB)
Title: Method of treating a fabric
IPC: D06M15/00
Filed: 1973-04-09
Abstract: 1401143 Treating fabric with microcapsules EURAND SpA and I D FELICE 9 April 1973 [15 April 1972] 16884/73 Heading B8C [Also in Division B2 and D1] Microcapsules containing a liquid toilet preparation, e.g. a perfume, are applied to a textile fabric by (a) blending them with a size and (b) applying the mixture to the fabric. In examples, the toilet preparation is lavender essence or pine oil. The capsules are made from gelatine (hardened with formaldehyde), gum arabic and a maleic anhydride copolymer with ethylene or vinyl methyl ether. A size bath for treating ribbon comprises starch, melamine resin, dextrine, formaldehyde, (NH 4 ) 2 SO 4  and water. A size bath for treating lining fabric comprises melamine resin, silicic acid, soap and water.
Patent GB-713339-A (GB)
Title: Improvements in and relating to piezo-electric transducers
Inventor: BRADFIELD GEOFFREY
IPC: H04R17/00
Filed: 1951-07-17
Abstract: 713,339. Piezo-electric instruments. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Oct. 17, 1952 [July 17, 1951], No. 16928/51. Class 40 (4) [Also in Groups XXIII, XXXVIII and XL (b)] A torsional transducer comprises a hollow cylinder 1 of barium titanate (which may be mixed with lead titanate) with internal and external electrodes 3, 4. Longitudinal holes 2 provided with conductive coatings enable the cylinder to be circumferentially polarized. The transducer may be used alone or in combination with a longitudinal transducer to drive an abrasive tool. The cylinder is formed by an extrusion process followed by firing. A silver coating is fired on the walls of the holes 2. The polarization may be carried out either at room temperature or whilst cooling through the Curie point. At room temperature, a field of 25 kv/cm is applied across each adjacent pair in turn, the field being maintained across each pair for 2 to 20 hours. At the Curie point, the field is applied as the cylinder cools, a cycle of operations taking only a few seconds or a few minutes. The electrodes 3, 4 are arranged in pairs between adjacent holes 2, and are preferably applied after polarisation of the cylinder. In an abrasive tool, Fig. 3, three sets of electrodes 4a, 4b, 4c are spaced longitudinally on a torsioned transducer 1 at a pitch of half a wavelength. The transducer is combined with a transducer 9 producing longitudinal vibrations so that together they produce a combined axial blow and a twist. The transducer 9 is formed integrally with the cylinder 1 but the holes 2 are not coated with metal and the internal and external electrodes are continuous. The abrasive tool 6 is mounted on the end of a tapered coupling 5 which is secured to the cylinder 1 by a soldered tongue and groove joint. The length of the coupling is an integral number of torsional half wave lengths and also of longitudinal wave lengths. Two tapered couplings 5 and 11 may be connected in series to obtain a high amplitude of vibration the length of the second coupling 11 being a quarter of a torsional wavelength. A combined torsional and longitudinal vibrator can be used with a bridge circuit to test objects for flaw, (see Group XXXVIII).
Patent GB-419795-A (GB)
Title: Superheterodyne radio receiver and the like
IPC: H04B1/26
Filed: 1934-06-08
Abstract: 419,795. Valve circuits for wireless reception. HAZELTINE CORPORATION, 15, Exchange Place, Jersey City, New Jersey, U.S.A.-(Assignees of Wheeler, H. A. ; 18, Melbourne Road, Great Neck, New York, U.S.A.) June 8, 1934, No. 17001. Convention date, Nov. 16, 1933. [Classes 40 (iii) and 40 (v).] In a superheterodyne receiver operating over more than one frequency band, the frequency range of the oscillator is minimized by tuning to a frequency higher than the signal in the lower frequency band and to a frequency lower than the signal in the higher frequency band. The Figure shows a four wave-range receiver in which wave-range changing is effected by ganged switches and tuning by ganged condensers. A separate oscillator valve 14 is used and the oscillator voltage is injected into the cathode circuit of the detector 10 by means of the common cathode resistance 13. The reaction circuit of the oscillator includes the feedback coils 31, 32 and one of the condensers 40, while resistance 36, condenser 37 are provided in shunt to the coil 31 to limit the amplitude of oscillation on the shortest waveband. The signal input circuit includes a coupling 15 for image frequency suppression as described in Specification 412,942, while the aerial circuit includes a trap circuit 17 tuned to the intermediate frequency used. The Specification gives the values of components used in a receiver operating over a range of 550-20,000 Kc. with an intermediate frequency of 450 Kc.
Patent GB-1388944-A (GB)
Title: Production of shaped polyamide bodies
IPC: C08G69/26
Filed: 1972-04-13
Abstract: 1388944 Injection moulding polyamides DYNAMIT NOBEL AG 13 April 1972 [17 April 1971] 17176/72 Heading B5A [Also in Division C3] A dimensionally stable amorphous polyamide body, the polyamide of which comprises recurring groups derived from terephthalic acid and from a C-alkyl substituted aliphatic diamine, is injection moulded by a screw type machine using a back pressure of 5 to 80 kgf/ cm.<SP>2</SP> and a cylinder temperature of 240‹ to 320‹ C. Injection is preferably by a reciprocating screw having a compression ratio from 2 : 1 to 3 : 1. The viscosity factor according to DIN 53727 of the polyamide is from 130 to 180 and is preferably lowered to between 90 and 170 during processing but may be raised. The elastic modulus of the body according to DIN 53457 is from 28,000 to 29,000 kgf/cm.<SP>2</SP> and the leakage current according to DIN 53480 is quality KA 3b. Examples are given of terephthalic acid derivatives, of C-methyl substituted aliphatic diamines, and of titanium dioxide and other pigments used in the polyamide (see Division C3). Also the physical properties of the polyamide and the moulding pressure and temperatures are given.
Patent GB-348909-A (GB)
Title: Improvements in the charging of internal-combustion engines by exhaust driven turbo-compressor sets
IPC: F02B37/007
Filed: 1930-06-04
Abstract: 348,909. Exhaust pipes ; pumps. RATEAU, L. A. J., NOBLEMAIRE, M. A. G. MARGOT-, and RATEAU, A. J. A., 10 bis, Avenue ElisÚe Reclus, Paris. June 4, 1930, No. 17228. Convention date, June 4, 1929. [Class 7 (ii).] In multicylinder engines as set out in Specification 182,786, [Class 7 (ii), Internal-combustion engines, Arrangement &c. of], wherein the cylinders are divided into two groups each exhausting into a separate turbine T<1>, T<2> driving one or separate charging-compressors 5, the exhaust pipes are connected together in pairs. The corresponding cylinders have their pistons connected to cranks arranged at 270‹ to prevent the exhaust from one cylinder interfering with the scavenging action in the associated cylinder. The combined pipes deliver to separate receivers a<1>, a<2> for each turbine. Specifications 128,625, [Class 7 (ii), Internal-combustion engines, Arrangement &c. of], and 350,712, [Group XXVI], also are referred to.
Patent GB-149830-A (GB)
Title: Improvements in cigarette cases
IPC: A24F15/18
Filed: 1919-07-10
Abstract: 149,830. Hudson, M. H., and Evans, J. T., (trading as Hudson & Evans). July 10, 1919. Fittings, internal.-A leather &c. cigarette case of the flap-closed wallet type, in which two or more compartments are united by a flexible portion, is provided with a compartment 6 for matches and a compartment 12 for a matchstriking surface, each formed by stitching a piece of leather along three edges to the case. In the case of the match compartment 6 the top edge of the leather is left loose to facilitate withdrawal of the matches. A socket or clip 10 is provided for a cigarette holder, and spring members of U-shape are provided in the cigarette compartments to retain the case in shape.
Patent GB-117562-A (GB)
Title: Appliances for a New Game for Teaching Music.
Inventor: JONES CARADOG EMLYN
IPC: G09B15/02
Filed: 1917-11-26
Abstract: 117,562. Jones, C. E. Nov. 26, 1917. Teaching music.-A game in which a tune is detected from its rhythm is played by first arranging note symbols in a single line as indicated on the upper stave and then transposing them to their proper positions as indicated on the lower stave. The symbols are marked on cards with pegs for insertion in holes in the board; they are stored in a box with labelled compartments.
Patent GB-1047581-A (GB)
Title: Cigar pressing
IPC: A24C1/44
Filed: 1963-05-03
Abstract: 1,047,581. Cigar-making machines. GENERAL CIGAR CO. Inc. May 3, 1963 [May 9, 1962], No. 17571/63. Heading A2C. Cylindrical cigars are pressed so as to have four flat sides by applying pressure inwardly against the cigar along four equally spaced radii, continuing the application of the pressure to make each of the four sides concave, and releasing the pressure, whereupon the concave sides of the cigar gradually straighten out to four flat sides. The cigar compressing unti 10 comprises two end walls 12 connected by a brace 14. Each end wall has a circular aperture from which radiate four equally spaced slots 18 in which the ends 23 of four concave shaped jaws 22 can slide. The ends of the jaws also have pins 24 which are engaged by slots 29 in a cam plate 26 which overlies the end plates 12 and is held in position by a support plate 30 screwed to the end wall 12 and having a circular centre aperture which registers with those in the plates 12 and 26. The cam plate 26 is rotatable so as to move the jaws 22 radially inwardly and outwardly by means of a lever 35. The levers 35 at each end of the unit 10 are connected by a rod 40 and bar 43. A plurality of units 10 may be mounted by brackets 60 on an endless conveyer 50 carried around two sprockets 52, 53, the sprocket 53 being driven intermittently by a Geneva gear 55. The plates 12 of the units 10 have rollers 20 which run on rails 62 and 63 adjacent the chains 50. The units are operated to compress cigars introduced at station C by rails 64 and 68 which act on rollers 42 on the rods 40 and are operated to open to allow ejection of a compressed cigar at station D by bumpers 70 which engage the lower portions 72 of the two levers 35 of each unit 10. The cigars may be fed from a hopper 78 into channels 77 on an endless conveyer 75 moving intermittently in timed relationship but in the opposite direction to the conveyer 50. The cigars are inserted into the compresser units by a reciprocating plunger 80 and are ejected by a reciprocating plunger 81 on to a shoot 96. The cigars may alternatively be removed by a suction device.
Patent GB-919118-A (GB)
Title: Fractionating column and tray unit therefor
Inventor: BROWN BASIL REGINALD
IPC: B01D3/18
Filed: 1960-05-18
Abstract: 919,118. Fractionating columns. BRITISH OXYGEN CO. Ltd. May 18, 1961 [May 18, 1960], No. 17576/60. Class 55 (2). A fractionating column incorporates a tray unit comprising a plate of unperforated material having a flat upper surface and a plurality of dependent fins on the lower surface thereof, each said fin extending across the plate in a plane generally transverse to the direction of vapour flow over the plate when in use. The fins may be rectangular in shape, and may be normal or inclined to the plate. A series of the tray units may be mounted within a casing such that the upper surface of each tray is spaced from the lower surface of the next tray, the tray units being staggered so that a gap is left for fluid flow between the end of each unit and the casing, as in Fig. 2. Cross-flow of liquid over the plates may be promoted by placing slots along one edge of each tray unit in the direction of fluid flow, adjacent units having the slots on opposite sides. Such a construction may be employed in a condenserevaporator for producing liquid oxygen enriched air, as illustrated in Fig. 1, in which saturated air at elevated pressure is fed at 14 into column 10 which acts as a fractionating condenser. Nitrogen leaves the column at 15 and a liquid enriched in oxygen collects at the bottom of the column 10 and is fed through an expansion valve 16 to the top of the evaporator 11, in which it passes downwardly, being warmed and evaporated by heat exchange through the dividing wall 13, and finally leaves the base of the column as vapour at 17.
Patent GB-1465559-A (GB)
Title: Aromatic diazonium bis-fluorinated alkylsulphonyl- methides
IPC: C07C315/04
Filed: 1974-04-22
Abstract: 1465559 Bis - (fluoroalkylsulphonyl)methide salts of diazo-aminobenzene/aldehyde condensates MINNESOTA MINING & MFG CO 22 April 1974 [23 April 1973] 17596/74 Heading C3R [Also in Divisions G2 and C2] The invention comprises a light-sensitive diazonium salt compound the cation of which is an aldehyde condensation product of a diazo-paminobenzene and the anion of which is a bis- (fluorinated alkylsulphonyl)methide, the alkyl portion of the alkylsulphonyl being substantially fluorinated. In Example 8 a commercial "diazo resin" is reacted with bis-(perfluorooctylsulphonyl)methane to obtain such a product.
Patent GB-569797-A (GB)
Title: Improvements in or relating to heat treatment furnaces
IPC: C21D9/00
Filed: 1943-10-26
Abstract: 569,797. Furnaces. STEIN & ATKINSON, Ltd., and ATKINSON, E. E. M. (Representative of ATKINSON, J. S.). Oct. 26, 1943, No. 17659. [Class 51 (ii)] In a furnace for the heat treatment of metal or other articles of the kind comprising a base 1 and a plurality of separate superposed sections 9 variable in number according to the size of the charge, each section is fitted with lifting eyes 13 and with guide members 15 which, when one section is lowered on to another ensure correct alignment. Each guide member 14 is formed with an inclined face 8 with which the lower flange of a circular I-beam 17 on the section 9 above engages during the lowering operation and which serves to guide the section into its properly aligned seating position. A similar guide member 6 is provided on the base 1. The joints between the sections are sealed by the engagement of a flange 19 depending from the lower end of each section in a sand trough 5 provided around the upper end of the subjacent section. Each section has its own heating means which, as shown, comprise tangential burners 20 supplied with gas and air from pipes 21, 22 which have readily disconnectible flexible connections 23 to mains 24, 25. The waste gases escape through openings 28 into registering vertical flues 29 which are each fitted with a damper and provided with sealing means similar to those provided between the sections 9. An additional outlet 30 provided in the centre of the base 1 communicates with the flue 29 in the lowermost section 9. Each of the latter is surrounded by a platform 26 with a section of ladder 27 depending therefrom, while the top section 9a is formed with a cover 31 and has no sand trough or guides at its upper end. Several bases 1 may be employed and on completion of the heat treatment at one base the sections 9 may be transferred, while still hot, to another base while the first one is being unloaded.
Patent GB-625647-A (GB)
Title: Production of polymers and copolymers of diolefins
IPC: C08F36/04
Filed: 1943-10-26
Abstract: Conjugated diolefins, e.g. butadiene-1,3 and isoprene are polymerized in an emulsion containing a secondary or tertiary alkyl or cycloalkyl mercaptan having between 8 and 16 carbon atoms.  Copolymers with acrylonitrile, methacrylonitrile, acrylic acid esters, styrene, vinylidene chloride and methyl vinyl ketone may be similarly produced.  Suitable catalysts are hydrogen peroxide, benzoyl peroxide, potassium and ammonium persulphates and sodium perborate. Suitable emulsifying agents are soaps, sodium alkyl sulphates and salts of alkyl naphthalene sulphonic acids.  Other mercaptans, e.g. those described in Specification 519,730 may also be present. Secondary mercaptans specified are those from n-octenes, n-dodecenes, dicyclopentadiene, dipentene and pinene; the specified tertiary mercaptan is tert.-dodecyl mercaptan.  After coagulation of the resulting dispersion by addition of sulphuric acid and sodium chloride the product may be compounded with sulphur, mercaptobenzothiazole, carbon black, stearic acid, zinc oxide and a high-boiling tar fraction and vulcanized by heat.  Specifications 616,521 and 625,646, [both in Group IV (b)], are referred to.
Patent GB-583138-A (GB)
Title: Improvements in or relating to ladders
IPC: E06C1/32
Filed: 1944-09-16
Abstract: 583,138. Ladders. GRAVITY LADDERS, Ltd., and BACH, C. H. Sept. 16, 1944, No. 17751. [Class 20 (ii)] An all-metal convertible long and step ladder, preferably of aluminium or light alloy, has sides a of channel or other flanged section and tubular or other rungs b rigidly connected to the sides. The shorter section may be hinged to the lugs c by its topmost rung, as shown, or by separate pins. When the device is extended for use as a long ladder the plates d abut against the sides of the shorter section. Pivoted links f are engaged with studs g when the device is used as a pair of steps. The links may be pivoted to, or adapted to hook over, a rung, and when not in use may be retained in position alongside the section to which they are hinged by a spring- clip. A link or clip may be provided to hold the sections together when the device is folded up. Rubber pads may be fitted to the bottoms of the sides.