baber/WOPTO huggingface dataset:
Patent GB-366533-A (GB)
Title: Improvements in or relating to recording apparatus for use in taking soundings or measuring distance with the aid of waves of sonic or supersonic frequency
IPC: G01S1/72
Filed: 1930-11-04
Abstract: 366,533. Echo-sounding apparatus ; recording-apparatus. SOC. DE CONDENSATION ET D'APPLICATIONS MECANIQUES, 42, Rue de Clichy, Paris, and TOULY, M., 9, ChaussÚe du Pont, Boulogne, Seine, both in France. Nov. 4, 1930, No. 33170. Convention date, Nov. 14, 1929. [Class 118 (ii).] An electrochemical recorder for use with echo-sounding apparatus comprises a sensitized flat band moved over a conducting plate and a recording contact attached to the end of a lever which is oscillated in a direction perpendicular to that of the band's movement. The record strip 1 is drawn from a braked roller 2 through a bath of electrolyte 5 and over a conducting plate 6 by rollers 7, 8 driven by a motor 9. Rollers 40 .. 43, which may be replaced by scrapers, remove any excess of electrolyte and flatten out the strip. Ribbed rollers 50, 51 are in a circuit containing an interrupter 52 and mark reference lines on the strip. In place of passing through the bath 5 the strip may be drawn over two fixed tubes 21, 3<1>, Fig. 1a. These tubes have radial perforations and are wrapped with chamois leather, the interiors of the tubes communicating with a reservoir of electrolyte. Situated over the plate 6 is a contact 21 secured to a lever 20 pivoted at 19 and held against a stop 23 by a spring 22. The lever is caused to oscillate by a cam 28 driven by a motor 27 which also operates a contact 30 controlling the emission of the sound impulses. The echo receiver is connected through a transformer and a rectifier to the recording apparatus, one contact being made to the pivot 19 and the other to the plate 6. A mark O is made at the emission of the sound and a mark b at the arrival of the echo. The electric motor 27 may be replaced by a mechanical one automatically rewound by electromagnetic means.
Patent GB-900094-A (GB)
Title: Re-touching foil which can be bleached out and a process for re-touching images
IPC: C09B23/04
Filed: 1958-10-17
Abstract: Bleachable dyes for use in a photographic retouching foil are prepared by reaction of 1-(p-sulphophenyl)-3-carboxy-5-pyrazolone derivatives with various aromatic and heterocyclic amino-aldehydes in methanol.  In a similar preparation 3-phenyl-isoxazolone is reacted with p-[N-(4-ethoxy-3-sulpho-phenyl]methylamino-benzaldehyde. Numerous styrylpyrazolone dyes are listed.
Patent GB-1072246-A (GB)
Title: An anthraquinone dyestuff and process for its manufacture
IPC: C09B62/505
Filed: 1964-08-14
Abstract: The invention provides a dyestuff of formula <FORM:1072246/C4-C5/1> in which X is hydrogen, sodium or potassium. The dye is prepared by reacting one mol. of the dyestuff of formula <FORM:1072246/C4-C5/2> with 2 mols. of diethylamine or 1 mol. of diethylamine in the presence of an alkaline reagent, aqueous solutions being used. The dye is blue.ALSO:Wool, cellulosic and polyacrylonitrile materials are dyed with a dye of formula <FORM:1072246/D1-D2/1> in which X may be hydrogen, sodium or potassium.  Cellulosic materials are dyed by applying an alkaline paste or solution, the material being steamed or heat treated afterwards. Polyacrylonitrile may be dyed from weak formic acid solutions and the dye has good affinity for wool in neutral baths, blue shades being obtained.
Patent GB-1070267-A (GB)
Title: A filter with a by-pass valve
Inventor: WILBER PAUL FRANCIS
IPC: F16N39/06
Filed: 1965-08-04
Abstract: 1,070,267. Filters. DOLLINGER CORPORATION. Aug. 4, 1965, No. 33394/65. Heading BID. A filter with a bypass valve is connected to a vacuum pump by pipe 12 and comprises two concentric filter elements 15 and 17 made of finely woven wire and embedded in plastic end caps 19 and 20. The bypass valve comprises a flange 30 molded to the end cap 20, and a U-shaped channel member 33 which rests on flange 30 and also supports an adjustable screw 37, spring 39 and valve plate 35. The plate 35 is raised at a certain pressure differential across the filter elements. The pleats, on element 17 may be covered with felted cloth.
Patent GB-1397416-A (GB)
Title: Apparatus for automatically finding microdocuments on a film
IPC: G03B21/11
Filed: 1972-07-17
Abstract: 1397416 Automatic control of position J DELPLANQUE and J FOURSY 17 July 1972 [13 Sept 1971] 33421/72 Heading G3N [Also in Division G4] Apparatus for locating frames of a film 4 in a film reader 1 containing a pick-up 15 for sensing frame movement comprises a magnetic cassette recorder 5 in which a tape 6 has recorded on it the addresses of the frames to be located, means M1, M2, 12 for searching the tape to find an address corresponding to a desired frame, and means 2, 11-14 for stopping the film when pick-up 15 senses the frame corresponding to the address found on the tape. Pick-up 15 produces a predetermined number of pulses for each increment of movement of the film in either direction: these pass to a counter 3 and to be recorded on the tape 6 with the addresses. The addresses are recorded on and read from tape 6 under the control of a keyboard 7 containing alphanumeric and command keys 7a, 7b-7d. Key 7b is used to record data on the tape, the four-digit address being entered by pressing keys 7a. Coded address signals pass via a store M1 to recorder 5; pulses generated with the pressing of each key 7a pass via a timer 9 to shift the addresses into M 1 and to cause them to be recorded on the tape, and also pass to a register 18 whose output 7i locks the keyboard after four keys 7a have been pressed. Meanwhile film 4 is unwinding and pulses from 15 are passing to counter 3 and to the tape to be recorded with the addresses. Correction of an address is effected by means of key 7c which rewinds the tape through the length of one address so that keys 7a can enter the corrected data. Key 7d is used to switch the recorder to the read mode. Keys 7a then select a required address which is output to M 1 and to a display 8. Tape 6 unwinds from its fully wound state to supply addresses to a store M2 and pulses to a timer 10 and a position counter 11. The contents of M1 and M2 are compared at 12, equality producing a signal D which halts the tape; at this moment counter 11 (and a store M3) reads N<SP>1</SP> (required frame position) and counter 3 reads N (actual frame position as determined by pick-up 15). N and N<SP>1</SP> are fed to comparators 13, 14 and a circuit 2 to generate control signals to move the required film frame into position. The number a of frames to be passed between slow down and stop is pre-set at 22; 14 outputs a signal according as N<SP>1</SP>># N and 13 outputs a signal |N-N<SP>1</SP>|-a which cause circuit 2 to produce forward or backward fast and/or slow signals (AR and/or AL, RR and/or RL) to control the film speed. Counter 3 counts up or down as required: when N equals N<SP>1</SP> circuit 2 sends a stop signal S to the film drive and a signal 19 to light a lamp 7e on the keyboard and to cause fast rewind of tape 6; finally, a pulse Z 2  from 5 resets the apparatus.
Patent GB-948531-A (GB)
Title: Dip-soldering apparatus
IPC: B23K3/06
Filed: 1961-09-19
Abstract: 948,531. Soldering. BENDIX CORPORATION. Sept. 19, 1961 [Sept. 30, 1960], No. 33539/61. Heading B3R. A dip-soldering device comprises means for passing current through a bath of molten solder and means for providing in the region of the bath a magnetic field such that its interaction with the electromagnetic field created by the current produces movement of the bath. A trough 11, Fig. 1, extending across a transport table comprising platforms 12, 13 has its ends closed by insulating blocks 15, 16 supporting electrodes 20, 21 which protrude into the ends of the trough, electrode 20 being connected to an A.C. or D.C. supply 23 by conductor 22 and electrode 21 connected to the supply by conductor 24 beneath the trough. Thermocouples 25, 26 in the trough maintain a constant bath temperature by regulating the applied voltage and fingers 30, 31 on arms 32, 33 sense the level of solder and operate switches in the circuit of a motor or motors, e.g. the motor 43 for feeding solder wire 41 into the trough. A similar solder supply may be provided at the other end of the trough. Fluxed printed circuit boards in carriers 51 are moved over the trough by a drive chain 50 and openings 65 in the platforms are supplied with heated air or nitrogen to pre-heat and postheat the circuit boards-the latter to allow gradual cooling. Current flows through the solder 80, Fig. 2, and returns via conductor 24, the current in the solder melting it and providing a convex meniscus 81 and also producing a flux in opposition to that produced by conductor 24, the force produced tending to rotate the molten solder. Alternatively, a resistance heater extending through the solder and supplied via conductor 24 primarily heats the solder and a small current is passed through the solder by electrodes at each end to produce a field in opposition to the return conductor field. The field produced by the return conductor may be provided alternatively by one or more permanent or electromagnets below the trough, permanent when A.C. is passed through the solder and A.C. electromagnets when D.C. is passed through the solder. In a modification, a quartz block 114, Fig. 3, has a hairpin-shaped trough 111 filled with solder 116 heated and agitated by current passed through the solder by electrodes 120, 121. The legs of solder roll in opposite directions. The solder level may be controlled by a photoelectric device.
Patent GB-384788-A (GB)
Title: Improvements in wind musical instruments
IPC: G10D9/04
Filed: 1931-12-03
Abstract: 384,788. Wind musical instruments. ZACHERL, M., 624/II, Freyung, Landshut, Germany. Dec. 3, 1931, No, 33551. [Class 88 (ii).] Valves for flutes, clarinets, oboes, saxophones, &c. consist of a rubber diaphragm 15 stretched over a boss 14 which projects from a disc s. The diaphragm is attached to the disc s, by a spring ring 16 or by means of a ridge formed on the diaphragm which engages in a groove in the disc. The valve is carried by an arm rotatable on a shaft 6 and is normally held open by a rubber cord 4 on which the arm rests. The opening of the valve is limited by a tail-piece 10. The valve is closed by pressure on a lever s<3> fixed to. a shaft 17 on which is a second lever s<2> carrying a roller 30 which engages the disc s.
Patent GB-838058-A (GB)
Title: Improvements in electrical modulation circuits
Inventor: ELSON NORMAN
IPC: H03K3/78
Filed: 1955-11-23
Abstract: 838,058. Automatic voltage control systems. RACAL ENGINEERING Ltd. Nov. 23, 1956 [Nov. 23, 1955], No. 33583/55. Class 38 (4). [Also in Group XL (c)] A stabilized D.C. power supply is modulated by a switch having a pulse output which is connected via a discriminator circuit to a control electrode of the amplifier valve of the stabilized supply so that only positive-going pulses are applied to drive the electrode positive so that the output of the stabilized supply drops below its stabilized level during the incidence of the applied pulse. Fig. 1 shows a circuit for pulse modulating a conventional D.C. supply comprising tubes VI, V2 and gas tube T so that a stabilized D.C. output voltage is obtained the level of which can be adjusted by potentiometer R1. Modulation is effected by the pulse output from the conventional multivibrator which is applied to a diode discriminator circuit D1, D2 so that when a positive pulse is applied from the multivibrator diode D1 conducts until grid current flows in tube VI. Its anode voltage is thus reduced so that the output voltage from the stabilizer drops correspondingly. When the voltage from the multivibrator goes negative diode D1 is cut off and the output voltage is held at its normal stabilized level. The circuit may be used for pulse modulating the anode of a conventional oscillator the output from the multivibrator being applied to a control electrode of one of the oscillator valves to switch it alternately to its conducting and non- conducting state the required output level being determined by the setting of the potentiometer R1.
Patent GB-783233-A (GB)
Title: Improvements relating to combined pressure and vacuum relief valves
IPC: F16K24/00
Filed: 1955-11-24
Abstract: 783,233. Relief valves. GENERAL ELECTRIC CO. Nov. 24, 1955 [Nov. 29, 1954], No. 33736/55. Class 135. A combined pressure and vacuum relief valve comprises two spring-loaded valve members 34, 44 opening in opposite directions to relief vacuum and pressure respectively, and bellows 15 for actuating the valve members which is responsive to the pressure difference between the system to be relieved and atmospheric or other outside reference pressure. The valve body 10 has an inlet port 11 for connection to the system and an aligned drainage port 12 closed by a plug 13 or a test cock, and is formed with a bore 14 closed at one end by a metallic bellows 15 and fitted at the other with a threaded sleeve 25 providing a seat 31 for the outer or vacuum relief valve disc 34. The valve disc 34 is loaded by a spring 37 and is formed with a central aperture 35 round which is formed a seat for the inner or pressure relief valve disc 44. The latter is connected to the head 17 of the bellows by a rod 46 formed with ribs 47 and guided by a correspondingly shaped aperture in the inner end 27 of the sleeve 25. The sleeve end 27 also has a number of fluid apertures 29. The body 10 and the sleeve 25 may be formed integrally. The bellows 15 is loaded by a spring 21 enclosed within and adjustable by a threaded cover 20 having a vent aperture 43. The spring 37 is similarly enclosed by an adjustable cover 40 having a fluid aperture fitted with a filter 42.
Patent GB-507842-A (GB)
Title: Improvements in or relating to shaft packings
IPC: F16C33/74
Filed: 1937-12-07
Abstract: 507,842. Stuffing - box substitutes. BACH, E., and KLEIN, A. Dec. 7, 1937, No. 33776. Convention date, Dec. 7, 1936. [Class 122 (v)] A resilient packing-ring 3 carried by a throwing ring 7 secured to a shaft 1, bears on a surface 5 on the casing with a pressure which decreases as speed increases due to the action of centrifugal force on the ring.
Patent GB-1101363-A (GB)
Title: Process for the preparation of concentrated, stable urea-formal-dehyde solutions
IPC: C07C273/02
Filed: 1966-07-27
Abstract: The process of Specification 906,120 in which gaseous formaldehyde is continually passed into urea solution in a multi-stage process to obtain a urea:formaldehyde ratio between 1:4 and 1:10 is improved by adding hexamethylenetetramine to maintain the pH of the solution between 7 and 8.5.  The hexamethylenetetramine may be generated in situ by passing ammonia, which reacts with the HCHO in the solution.
Patent GB-651793-A (GB)
Title: Improvements in or relating to lifters for elevator moulds for moulding the walls ofconcrete structures
IPC: E04G11/22
Filed: 1947-12-22
Abstract: 651,793. Moulding concrete walls in situ; mould lifting devices. HEIDENSTAM, E. J. VON, and LINDMAN, E. I. Dec. 22, 1947, No. 33848. Convention date, Oct. 21, 1946. [Class 20(ii)] Concrete walls 1, e.g. of a silo; are moulded in situ by means of elevator moulds 2, 3 which are lifted successively by means of a fluid pressure jack 7 or other lifting device secured to a yoke 5 carrying the moulds 2, 3, and which is adapted to climb and be supported by a vertical reenforcing member 4 enclosed and stiffened by a tube 8 carried by the jack 7 or yoke 5. The tube 8 extends below the upper edges of the moulds 2, 3 and below a platform 6 fixed to the yoke 5. In moulding the walls of a silo, a number of jacks 7, or other lifting devices are positioned around the periphery of cylindrical moulds 2, 3.
Patent GB-1308203-A (GB)
Title: Process for the preparation of aromatic carboxylic acids
IPC: C07C51/265
Filed: 1970-07-13
Abstract: 1308203 Terephthalic acid SOC ITALIANA RESINE SpA 13 July 1970 [31 July 1969] 33957/70 Heading C2C A process for the preparation of terephthalic acid consists of partially oxidizing p-xylene with molecular oxygen in a first stage of reaction in an aliphatic carboxylic acid environment and in the presence of catalysts comprising cobalt and/or manganese bromides and completing the oxidation with molecular oxygen in a second stage of reaction, in the presence of a bromoaldehyde in such quantity that the bromine introduced is equal to between 0À1 and 10 gramatoms to each 100 mols. of p-xylene fed to the first stage.
Patent GB-1240586-A (GB)
Title: Method of producing multicellular multilayer thermoplastic synthetic resin films
IPC: C08L101/00
Filed: 1969-07-04
Abstract: 1,240,586. Paper-like thermoplastic synthetic resin films. SEKISUI KAGAKU KOGYO K.K. 4 July, 1969 [6 July, 1968], No. 33964/69. Heading B5B. [Also in Divisions B2 and C3]  A process for the production of paper-like thermoplastic synthetic resin films which comprises melt mixing and kneading a composition comprising 100 parts by weight of an olefin resin, 1 to 100 parts by weight of at least one additional resin selected from styrene, acrylate, acetal, phenoxy, vinyl chloride, vinyl acetate and amide resins, and 10 to 300 parts by weight of at least one inorganic filler, shaping the composition into a sheet and stretching the sheet biaxially at 100 to 170 C., preferably at a draw ratio in at least one direction higher than 1À5 : 1. The composition may also contain not more than the total weight of olefin resin, additional resin and inorganic filler of one or more rubber selected from polyurethane, styrene-butadiene, acrylonitrile-butadiene, polybutadiene and propylene oxide rubbers. The inorganic filler may be selected from diatomaceous earth, powdered hydrous silica, talc, kaolin, zeolites, mica powder, asbestos powder, calcium carbonate, magnesium carbonate, calcium sulphate, clay, silica powder, alumina, magnesium sulphate, barium sulphate, zinc sulphide, titanium oxide and zinc oxide. The further treatment to improve the properties required for use as a paper may comprise making at least one of the surfaces more polar by flame, electric discharge or oxidant treatment, high energy or ultra-violet irradiation or applying a polar resin either as a monomer or in a solvent. Alternatively the surface may be contacted with a solvent for the olefin resin, which may contain a polar resin and may contain one or more inorganic filler, and thereafter evaporating the solvent. As an alternative to evaporating the solvent the film may be treated with a non-solvent for the olefin resin which is compatible with the solvent. Alternatively the film surface may be treated with a solvent for the additional resin which is a non-solvent for the olefin resin to elute some of the additional resin. Alternatively, inorganic fillers may be dispersed on at least one surface of the film either by dispersing heated fillers or fillers wetted with a solvent for the olefin resin and thereafter heat-compressing the film or by fixing the fillers on the surface with a binder. The film may be impregnated with an ink-drying promoter. The paper-like films so produced have a multi-cellular multi-layered structure and show good surface and mechanical strength, abrasion resistance, graphic properties and printability, flexibility, weatherability, flame and chemical resistance.
Patent GB-594509-A (GB)
Title: Improvements in oar and scull sleeves and collars
IPC: B63H16/04
Filed: 1945-12-17
Abstract: 5 9 4, 5 0 9. Oar sleeves. PITCHFORD, J. B. Dec. 17. 1945, No. 34055. [Class 114] An oar and scull sleeve 1 is made of a resilient material, its outer walls taper from the collar 2 to the end as shown to enable the sleeve to be readily positioned on the shaft of an oar without the use of expanders ; the extension 3 is provided to ensure sufficient mass of material for easy manipulation when fitting the sleeve which may be cemented in its final position.
Patent GB-521624-A (GB)
Title: Improvements in or relating to liquid fuel tanks
IPC: B64D37/06
Filed: 1938-11-23
Abstract: 521,624. Indiarubber compositions. FABBRICHE RIUNITE INDUSTRIA GOMMA TORINO W. MARTINY INDUSTRIA GOMMA-SPIGA-SABIT-LIFE. Nov. 23, 1938, No. 34093. Convention date, Dec. 11, 1937. Drawings to Specification. [Class 70] [Also in Group XXIX] A sheet formed of vulcanized ground rubber mixed with a binder substantially insoluble in liquid fuel, such as rubber solution, gutta percha, balata, or glue, is used to cover liquid fuel tanks. Compression is avoided as far as possible in forming the sheet, which may be given a cellular structure by known methods, and may be coated by dipping into vulcanized or crude latex.
Patent GB-765979-A (GB)
Title: An improved lug strap for looms
IPC: D03D49/38
Filed: 1954-11-25
Abstract: 765,979. Loom lug straps. KAY & CO., Ltd., S., and BESCOBY, W. Aug. 19, 1955 [Nov. 25 1954], No. 34132/54. Class 142 (2). A lug strap comprises two stainless or spring steel U-shaped strips 10 joined by a bolt 16 and a spacer 17. A solid rubber buffer 13 is provided in the bend of each strip. A leather strap 19 connects the picking stick 18 with the adjacent buffer. A picking arm 20 adjacent the other buffer has a collar 21 which engages flanges 12 on the contiguous strip 10. Alternatively, the buffers may be spring-loaded and be guided by the edges of the strips 10.
Patent GB-873208-A (GB)
Title: Improvements in or relating to articles of polystyrene
IPC: B29B13/00
Filed: 1957-11-04
Abstract: An article, or a preform therefor, formed from linear crystallizable polystyrene (which is substantially free from atactic polystyrene and wherein the crystallizable content is in the crystallized state), is produced by shaping the preform at a temperature above the melting point of the polystyrene (M.P.=230 DEG C. and then annealing the preform at a temperature below the melting point (e.g. at 160 DEG -190 DEG C.) for a time sufficient to re-convert the polystyrene to the crystalline state, and finally (in the case of the production of the article) shaping the preform at a temperature below the melting point of the polystyrene (e.g. shaping at 160 DEG  to 225 DEG C.). The crystallizable polystyrene may be separated from a mixture prepared for instance as disclosed in Specifications 810,023 and 828,791, by solvent extraction of atactic polymer (and optionally block polymer) at a temperature below the melting point of the crystallizable polystyrene.  The solvent may be a ketone, aliphatic ester or saturated hydrocarbon, in particular methyl ethyl ketone or methyl isopropyl ketone, and may be used at a temperature higher than its boiling point by the use of superatmospheric pressures.  The products may be sterilized with steam or kept in aqueous calcium chloride at 110 DEG -115 DEG C., without showing dimensional changes. Applications specified are sheet, strip and shaped articles such as dishes, tiles and tumblers.