baber/WOPTO huggingface dataset:
Patent GB-1197202-A (GB)
Title: Catalyst Tubes for Furnaces for Carrying Out Catalytic Processes
IPC: B01J8/06
Filed: 1967-07-11
Abstract: 1,197,202. Catalyst tube. FRIEDRICH UHD'E G.m.b.H. 11 july, 1967 [14 July, 1966], No. 31774/67. Heading B1F. A catalyst tube extending through the base 1 of a furnace comprises removable catalyst support means consisting of rings 6 mounted by brackets 5 on plate 4 which is fixed to tube 3, and tube 8 which is fixed to disc 10 which disc has bayonet-type connection with lugs 10a. Insulating material is present at 9, 11, 12 and 13. Reaction products pass down tube 3.
Patent GB-845110-A (GB)
Title: Improvements in or relating to diaphragm pumps
IPC: F04B53/10
Filed: 1956-10-18
Abstract: 845,110. Diaphragm pumps ; compressors. HENDERSON, W. M. April 10, 1957 [Oct. 18, 1956], No. 31802/56. Classes 8(1) and 102(1). [Also in Group XXIX] A diaphragm pump or compressor comprises a cylindrical body 10 formed with a partition 17 providing a pumping chamber 16 and an outlet chamber 15. An inlet pipe 11 leads into the body and is provided with an inlet flap valve 13, while a port 18 in the partition is provided with an outlet flap valve 19. A cover 31 closes one end of the body and is in sealing engagement with the partition while the removal of this cover exposes both sides of the outlet valve. The cover may be secured by a member 36 provided with a cam or cams 34 or the cover may be screwed to the body. A diaphragm 21 is clamped between the other end of the body 10 and a housing 22 which is slotted at 23 to allow passage of an acuating lever 24. The pump is suitable for pumping water from lifeboats, and various shapes of actuating levers are described which provide ease of pumping depending upon the mounting of the pump. The pump may be actuated by weights and the movement of the boat.
Patent GB-520908-A (GB)
Title: Improvements in or relating to optical projection apparatus
IPC: G09F19/18
Filed: 1938-11-04
Abstract: 520,908. Optical projection apparatus. KAPELLA, Ltd., and MARTIN, H. W. Nov. 4, 1938, No. 31941. [Class 97 (i)] Reflecting surfaces, scored or otherwise defaced, are provided between the film gate, or the equivalent, and the projection lens, to produce diffuse illumination on the projection screen around the projected image. As shown, a reflecting attachment to the gate A<SP>1</SP> comprises a parallel-sided rectangular tubular portion B and a flared portion formed of four faces B' spaced by triangular inserts B<SP>6</SP>. The device may be spaced from the gate, and may be wholly parallel-sided and of a section corresponding to the shape of the gate aperture.
Patent GB-485592-A (GB)
Title: Manufacture of azo-dyestuffs
IPC: C09B29/20
Filed: 1936-11-23
Abstract: Azo dyes insoluble in water are made in substance, on the fibre or on a substratum by coupling the diazo compound of an amine of the formula <FORM:0485592/IV/1> or a derivative thereof with an arylide of 2 : 3-oxynaphthoic acid.  In examples, (1) cotton is grounded in a liquor containing 1-(21 : 31 - oxynaphthoylamino) - 2 : 4 - di-methoxy-5-chlorobenzene, alcohol, pyridine, caustic soda, formaldehyde and turkey red oil and developed with a solution made by diazotizing 4-methoxy-3-aminophenyl - 1 - trifluoromethylsulphone in presence of acetone and zinc chloride with subsequent addition of sodium acetate and salt (yellowish red), (2) diazotized 3-aminophenyl - 1 - trifluoromethylsulphone is coupled with 1-(21 : 31-oxynaphthoylamino) - 2 - methoxybenzene in substance or in presence of barytes or zinc white (orange-red lakes), (3) cotton is padded with the anilide, printed with a paste containing diazotized 4-methoxy-3-aminophenyl-1-trifluororomethylsulphone, acetic acid and starch tragacanth, dried and treated with a hot sodium carbonate solution (vivid red).  A table of further combinations is given. Specifications 6379/12, [Class 2 (iii)], 17279/13, [Class 15 (ii)], and 361,097 are referred to.  Aminophenyltrifluoromethyl sulphones of the above formula are made by reducing the corresponding nitro compounds described in Specification 479,774 or by reduction of the nitro compounds made by nitration of trifluoromethylphenylsulphones. The o- and p-amino derivatives may be made by nitrating trifluoromethylphenylsulphides (cf. Specification 479,774) oxidizing the nitrophenyltrifluorosulphoxides formed to the nitro sulphones and reducing.
Patent GB-908570-A (GB)
Title: Improved system for guiding and landing aircraft
IPC: G05D1/06
Filed: 1960-09-19
Abstract: 908,570. Signalling apparatus for aerial navigation. MESSERSCHMITT A.G. Sept. 19, 1960 [Sept. 19, 1959], No. 32096/60. Class 118. [Also in Group XL (c)] In a system for guiding a vertical take-off and landing aircraft on to a landing area during the final phase of a blind approach from any direction, a rotationally symmetrical magnetic field is produced by feeding a circular or cylindrical coil (Fig. 1) under the surface of the airfield with direct or alternating current (up to 400 c.p.s.), and means is provided in the aircraft for evoluating the field intensity vector at the existing location of the aircraft above the landing area. If the aircraft is outside the axially symmetrical funnel shown in Fig. 1, the vector will have an upwardly directed component which changes continuously to a down; ward component as the aircraft penetrates the funnel and becomes progressively larger as it approaches the axis of the field until, on the axis, the vector points vertically downward. A voltage proportional to the angle of inclination of the field vector to the horizontal may be applied to the deflection coils of a cathode-ray tube so that the light spot will be exactly in the centre of the screen when the vector points vertically downwards and progressively further from the centre as the angle of inclination decreases, until when the vector is horizontal, the spot will be at a well-defined distance from the centre. If the direction of movement of the light spot is also arranged to indicate the direction of the aircraft's movement, then the line joining all points at which the vector is horizontal will be a circle (Fig. 3) and if the light spot is outside this circle, as at A, the pilot will know that he is outside the funnel (of Fig. 1) and will continue to manoeuvre the aircraft until the spot is at B. A precision altimeter (of any known type) is necessary in the aircraft to permit the pilot to bring the aircraft down at a rate appropriate to its altitude at any time.
Patent GB-417736-A (GB)
Title: Improvements in and relating to electric transformers
IPC: H01F29/10
Filed: 1933-11-17
Abstract: 417,736. Transformers. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Soc. Generale de Constructions Electriques et Mecaniques (Als-Thom); 38, Avenue Kleber, Paris.) Nov. 17, 1933, No. 32128. Convention date, Nov. 17, 1932. [Class 38 (ii).] A transformer, particularly adapted for welding, has three magnetic limbs one of which, 1, carries the primary and secondary windings 2 and 3 arranged in high mutual inductive relationship, the second 5, is hinged to the main core at 7 and carries a reactance 6 which is preferably connected in the primary circuit and the third, 4, serves to close the magnetic circuits of the other two limbs. The air gaps between the limb 5 and the main core may be varied by means of a screw 8 or an equivalent device, to regulate the secondary current and voltage and the secondary winding may be divided into two sections which can be connected in series or parallel.
Patent GB-1398504-A (GB)
Title: Coating surface-oxidized silicon-containing steel
IPC: C23C24/00
Filed: 1973-07-05
Abstract: 1398504 Coating silicon-containing steel MERCK & CO Inc 5 July 1973 32137/73 Heading C1M Magnetizable ferrous material is made by coating surface-oxidized silicon-containing steel with a composition consisting of MgO and/or Mg(OH) 2 , and at least one boron compound, the amount of boron-compound, calculated as elemental boron, being 0À031-9À3 weight per cent of the Mg-containing material, calculated as MgO, and annealing the coated steel, to obtain a vitreous electrically insulating film, in a reducing atmosphere, e.g. H 2 , at 950- 1500‹ C. for 2-50 hours. The composition is preferably applied to the steel as an aqueous suspension, the coating being furnace-dried at, e.g. 250-275‹ C. The amount of MgO may be 0À02-0À06 oz. MgO/sq. foot steel. The boron compound may be boric oxide, but numerous other possible compounds are listed. The reducing atmosphere may be hydrogen.
Patent GB-1111443-A (GB)
Title: Sample injection valve
Inventor: TOPHAM WILLIAM HENRY
IPC: G01N30/20
Filed: 1964-08-10
Abstract: 1,111,443. Sampling for gas chromatography. BRITISH PETROLEUM CO. Ltd. 5 Aug., 1965 [10 Aug., 1964], No. 32418/64. Heading B1L. [Also in Division B8] A sample injection valve, particularly for use with gas chromatography column, comprises a chamber 1 having an inlet 4 and outlet 5 for sample liquid flowing through the valve and means 12, 8 for shutting-off the inlet and outlet from the the liquid in the chamber and for applying pressure to the trapped liquid in order to force it through a port 6. The means 12 for shutting-off the inlet 4 and outlet 5 is in the form of a piston washer 12 connected by a nod 18 to a piston 8 located in a second chamber 2 and sealed therewith by means of a diaphragm 13. The port 6 is provided with a non-return valve 7. In operation, the sampling liquid if fed continuously through the inlet 4, into the chamber 1, and out via the outlet 5. When it is desired to feed a sample into a chromatographic column connected to a pipe 16, compressed air is fed through a port 14 to act in the piston 8 and thereby force the liquid in the chamber 1 passed the valve 7 where it is carried by a liquid fed at 17 into the pipe 16, to the column. In a modification the piston may be moved either manually or electromagnetically instead of by compressed air.
Patent GB-962804-A (GB)
Title: Improvements in or relating to magnetic amplifier circuits
Inventor: ADDRISON KENNETH NOEL
IPC: H03F9/04
Filed: 1960-09-22
Abstract: 962,804. Magnetic amplifiers. DE HAVILLAND AIRCRAFT CO. Ltd. Sept. 22, 1961 [Sept. 22, 1960], No. 32529/60. Heading H3B. In a magnetic amplifier having two control windings, a common control signal is fed to each winding through a rectifier and capacitor respectively to obtain an output signal responsive to rate of change of input signal with an input signal of one polarity and an output signal responsive to input signal with phase change with an input signal of opposite polarity. The rectifier 70 and capacitor 74 are shown connecting two push-pull stages in cascade and feeding series-connected windings 40, 54 and 42, 56 respectively. Both stages are provided with bias and feedback windings, and the output of the second stage includes a rectifier 80 to block the output signal if the change is in a permissible direction. The invention is applied to control the fuel supply to an engine in accordance with its temperature. The direction of rectifier 70 may be reversed. Specification 962,801 is referred to.
Patent GB-392623-A (GB)
Title: Improvements in or relating to a method of knitting fabrics, knitting machines and knitted fabrics
IPC: D04B9/32
Filed: 1931-11-25
Abstract: 392,623. Knitting. WILDT & CO., Ltd., Adelaide Works, Leicester.-(Brinton Co., H. ; Kensington Avenue, Frankford, Philadelphia, U.S.A.) Nov. 25, 1931, No. 32694. [Class 74 (ii).] A knitted fabric has a foundation of body yarns 10 and warp pattern yarns 11 .. 14 incorporated in one or more of the wales in such manner that in each wale containing a patterning yarn there are two such yarns, of which only one at a time is knitted and where that one is knitted the other is retained in or is carried along the same wale without showing as part of the pattern. Warp-yarn feeders 40 comprising a flat body and spaced projections 50, 51 having yarn-guiding eyes are provided, the projections 50, 51 being angularly offset relatively to the body portion to guide the feeder in its wrapping movement about the needle. Needle-selecting pattern mechanism preferably as described in Specification 267,876, [Class 74 (ii), Knitting &c.], is provided for moving needles to two heights, x-x, y-y, for cooperation with the yarn feeder. Yarn feeder deflecting cams are provided for moving the feeders 40 so that either the projection 50 only is moved to the outside of the needles, or both projections 50, 51 are so moved ; undeflected feeders remain entirely within the needle circle or line. Needles 31 raised to height x-x have yarn 49 from the projection 51 only wrapped about them, since the offset projection 50 does not engage the needle and is therefore not deflected by it to wrap its yarn 48. With the needle at height y-y, the projection 51 does not pass outside the needle, so that the needle receives yarn only from the projection 50. Both yarns may be floated behind the body yarn by allowing a needle to remain unraised. Specification 313,657, [Class 74 (ii), 'Knitting &c.], also is referred to.
Patent GB-793000-A (GB)
Title: Improvements in or relating to electrical socket connectors
Inventor: GOUGH ERNEST
IPC: H01R13/453
Filed: 1955-11-16
Abstract: 793,000. Two-part couplings. WALSALL CONDUITS, Ltd. Nov. 13, 1956 [Nov. 16, 1955], No. 32734/55. Addition to 744,915. Class 38 (1). The shutter mechanism of the parent Specification is modified in that instead of providing a locking-plate for actuation by the earth pin, the lower end of the central limb of a T-shaped shutter 18, which limb is apertured to slide over the earth socket 26, engages a shoulder 29 on the connector body in the operative position of the shutter. A portion 27 of said central limb projects into the earth socket through a cut-away portion thereof so that on insertion of a plug, the earth pin engages the portion 27 and disengages the shutter from the shoulder 29 whereupon engagement of the upper end of the shutter by the live pins causes the plate 23 to rock and move the shutter against spring 25 to its inoperative position. The shutter is mounted between the halves of a two-part body on the front part 10 of which shoulder 29 is formed.
Patent GB-1015638-A (GB)
Title: A process for separating l-glutamic acid crystals from a fermentation broth
Inventor: YAMAMOTO SOTOO
IPC: B01D9/00
Filed: 1962-08-28
Abstract: Trigonal pyramid crystals of L-glutamic acid are obtained from a fermentation broth by adding trigonal pyramid type seed crystals of L-glutamic acid to a saturated aqueous L-glutamic acid solution having a pH of 3.2 and feeding said solution with the fermentation broth and a strong mineral acid with agitation whilst keeping the pH of said solution at 3.2.
Patent GB-191920-A (GB)
Title: Improvements in, and relating to, pistons for two stroke cycle internal-combustion engines
IPC: F02F3/00
Filed: 1921-12-08
Abstract: 191,920. Hammond, E. V. Dec. 8, 1921. Piston packing; connecting - rods.- In a two-stroke cycle internal-combustion engine leakage of combustible mixtures from the transfer port d. Fig. 1, to the exhaust port c round the piston, is prevented by the employment of a split sleeve b, or a number of superposed split rings, or a helical packing - ring. The piston body is reduced in diameter to accommodate the ring b which is preferably secured by a junk ring h. A split ring g is placed at each end of the sleeve b to cover the split in the sleeve, which is preferably arranged at the exhaust port c. The sleeve may cover the ends of the gudgeon-pin and secure it in position, or may be perforated to permit insertion of the gudgeon-pin. In the latter case the ends of the gudgeon-pin may project into the perforations in the sleeve and prevent its rotation, or, as shown in Fig. 3, screw or other plugs l inserted into the bore of the gudgeon-pin bosses may secure the gudgeon-pin and prevent rotation of the sleeve b.
Patent GB-1086258-A (GB)
Title: Process for the extraction of nickel from ores
IPC: C01G53/00
Filed: 1965-08-02
Abstract: Nickel is extracted from an ore containing nickel silicate or oxide by forming a water slurry of sulphur particles and the ore, in proportions of 150-800 pounds of sulphur per United States ton of ore and heating the slurry in a closed reactor at a temperature of 100-300 DEG  C. and at a pressure of at least 100 p.s.i.g. until all the sulphur has been reacted. The resultant slurry is then reacted at a temperature of at least ambient temperature with a free oxygen containing gas or a free oxygen supplying chemical until all of the nickel sulphide in the slurry has been oxidized to nickel sulphate. The nickel is removed from the nickel sulphate solution by precipitation with H2S or by neutralization to precipitate Ni(OH)2. missing page 120
Patent GB-359739-A (GB)
Title: Improvements in or relating to smoke-washing apparatus
IPC: B01D45/16
Filed: 1930-11-04
Abstract: 359,739. Chimney tops. BECHTEL, E., 53, Brunnenstrasse, Essen, Germany. Nov. 4, 1930, No. 33162. [Class 25.] A smoke washer consists of a slightly flaring cowl e enclosing a fixed cone l with helical blades g. Solid particles are thrown outwards against the wall of the cowl which is fed with a film of water by means of a perforated plate i and guideplate /. The water is intercepted by a trough m and is discharged at h.
Patent GB-881505-A (GB)
Title: Improvements in or relating to reversing mechanism for the tool-holders of lathes and like machine tools
IPC: B23B47/22
Filed: 1959-09-30
Abstract: 881,505. Lathe details. ERNAULT-BATIGNOLLEO, M. Sept. 30, 1959 [Oct. 2, 1958], No. 33170/59. Class 83 (3). The hydraulic feed system for the tool-slide 1, Fig. 2, controlled by the electromagneticallyoperated valve 12, is similar to that described in Specification 756,947. The fast approach movement of the tool-slide and slow feed under control of the rack 5 moved from the spindledriven feed-shaft 51 is obtained as described in the above Specification, a screw 10, Fig. 3, keyed to but slidable along the feed-shaft driving through a spiral wheel 9 and free-wheel 8 a pinion 6, Fig. 4, meshing with the rack 5. To obtain a dwell before reversal so that the tool may finish a face, for example, two switches 25, 26 are included in the circuit of the electromagnet 16, 17, Fig. 2. At least one switch must be closed for actuation of the magnet to place the valve 12 in position for forward feed. A stop-member 33 moves with the toolslide and opens switch 26 just prior to reaching the " dead-stop " 34. When this occurs rack 5 and adjuster 11 engage switch-arm 27 and the end of valve 12 to maintain a balance between springs 19, 29 and the electromagnet to give the controlled feed set by the spindle-drive to the rack. The rack 5 moves away from switch-arm 27 after stopping of the tool-slide and, after a predetermined number of spindle revolutions, switch 25 opens and thus cuts the circuit to the electromagnet. The valve 12 moves upwards under the pressure of spring 18 and the tool-slide returns under hydraulic pressure to its starting position. Other arrangements with a different disposition of the mechanical parts, are described.
Patent GB-395235-A (GB)
Title: Inlet and feeding device for automatic weighing machines
IPC: G01G21/00
Filed: 1932-11-25
Abstract: 395,235. Weighing-apparatus. HENNEFER MASCHINENFABRIK C. REUTHER & REISERT, Hennef-on-Sieg, Germany. Nov. 25. 1932, No. 33358. Convention date, Dec. 7, 1931. [Class 143.] Automatic-feed weighers.-In a device for feeding pulverent and floury materials to an automatic-feed weigher and comprising two superposed conveyers b, c both of which operate during the main feed and one (c) only during the dribble feed, the rear portions only of the conveyers lie in the free inflowing stream of material while the other portions are arranged in separate housings. An adjustable shutter d serves to regulate the supply to the dribble. feed screw. The screws are driven through clutches i, n operated in known manner, the dribble-feed screw preferably rotating at a higher speed than the main screw. The device is provided with dribble and cut-off gates h, m, a stirrer l and a de-aerating filter p.
Patent GB-484506-A (GB)
Title: Methods of purifying crude diamino-arsenobenzene bases
IPC: C07F9/74
Filed: 1936-12-05
Abstract: Crude diamino-arsenobenzene bases are freed from toxic impurities by dissolving the crude base in an equimolecular proportion of alcoholic hydrochloric acid and adding an equivalent amount of an organic acid salt which is soluble in alcohol or aqueous alcohol, whereby the impurities are precipitated.  The filtered solution contains the purified base, from which derivatives may be prepared, e.g. by condensation with sodium formaldehyde-sulphoxylate.  The examples describe the purification of 3 : 31-diamino-4 : 41-dioxyarsenobenzene using sodium lactate, potassium lactate, calcium acetate and sodium salicylate respectively to precipitate the impurities.  Specification 413,753 is referred to.
Patent GB-1245706-A (GB)
Title: Improvements in or relating to a machine for producing concrete slabs and the like
Inventor: RIDING DEREK
IPC: B28B3/02
Filed: 1969-07-02
Abstract: 1,245,706. Moulding concrete slabs. D. RIDING, and P. D. TOM. 29 June, 1970 [2 July, 1969], No. 33424/69. Heading B5A. An apparatus for producing concrete slabs comprises a mould 6, two platens 38 and 50 moved respectively by hydraulic jacks 30, 32, and 52, 54 to compress a mix in the mould, and pneumatically operated rotary vibrators 46 and 48 located respectively above and below the mould to vibrate the mix whilst it is under pressure, the platen 38 being secured to the jacks 30, 32 by box-sections 34 and 36 so as to be capable of relative horizontal and vertical movement. The apparatus is formed with a rotatable table 4 having four sections, viz., a station A for loading the mould, a station B for compression and vibration, a position C for final compaction in a press 56, and a fourth position, diametrically opposed to position B, for ejection. The jacks may be operated pneumatically. The vibrators can be electrically or mechanically operated. The vibrating arrangement can be used in a single station slab producing apparatus. (For Figure see next page.)
Patent GB-1312154-A (GB)
Title: Electric switch
IPC: H01H9/22
Filed: 1970-07-09
Abstract: 1312154 Snap action switches ARROWHART Inc 10 Aug 1970 [11 Aug 1969] 33436/71 Divided out of 1312153 Heading H1N A snap action mechanism for use in the switch of the main specification comprises a lever 72 manually actuable by the handle (14); an overcentre tension spring 70 coupling the lever 72 to a link 65 coupling the knee joints 51, 61 of a pair of toggle linkages 50, 52 and 60, 62 which actuate contacts by the assembly 30 of the two plates (32, 34); and a latch 80 spring urged to hold the link 65 in the contacts open position until the spring 70 has passed overcentre. The latch is released by a pin 89 on the lever 72.
Patent GB-337204-A (GB)
Title: Improvements in machines for winding coils of wire
IPC: B21C47/04
Filed: 1929-11-04
Abstract: 337,204. Triggs, W. W., (Schloemann Akt.-Ges.). Nov. 4, 1929. Reeling-machines.-In a wire-winding machine having winding-drums driven by a friction clutch and wherein the coil of wire and the outer winding-drum are carried on levers, a spring n is compressed and suddenly released after the coil o is wound, thus rapidly withdrawing the supporting levers d into the inner drum c and allowing the coil o to drop without risk of the windings being disturbed by the levers d. A shaft k, which is stationary during winding but at the conclusion thereof is slowly rotated from the main drive, carries an eccentric l which moves upwards a lever g thereby disengaging the friction clutch e, applying a friction brake f and withdrawing the levers d from the outer drum b, which falls on to a support w. After a limited upward movement the lever g is stopped by a pawl h and further rotation of the shaft k compresses the spring n, which is housed as shown, until a cam m also on the shaft k engages a lever i on the pawl h whereupon the spring n forces the lever g upwards, thus retracting the levers d from the coil o.