baber/WOPTO huggingface dataset:
Patent GB-255859-A (GB)
Title: Electric signalling system using polyphase high frequency currents
IPC: H04B3/54
Filed: 1926-07-14
Abstract: 255,859. Wired Radio, Inc., (Assignees of Duncan, R. D.). July 21, 1925, [Convention date]. Phase, changing.-Multi-phase oscillatory currents are produced from a single-phase source, as described in Specification 245,725, by placing angularly-spaced coils in a rotating magnetic field, and the phase-displacements of the multi-phase currents are adjusted by moving the coils. The multi-phase oscillations may be used for telephonic or telegraphic signalling over multi-phase power circuits, and the coil adjustment is intended to maintain a balanced condition of the oscillatory currents, in spite of differences in the loads presented to the oscillatory currents by the power lines and their associated apparatus. The single-phase, oscillator 1 is coupled to a circuit 7 comprising a variable condenser 3, a variable inductance 5 and a coil 4. A similar circuit 9 coupled to the circuit 7 includes a coil 12 at right angles to the coil 4. The circuits 7, 9 are adjusted to give currents in quadrature in the coils 4, 12 which consequently produce a rotating field. Three angularly-displaced coils 16 - - 18, of which 16 is fixed, are placed in this field and are connected in star to the grids of three valves 22 - - 24, the common point being connected through a bias battery and earth 21 to the valve filaments. The valve-plates are energized by a battery 28 through chokes 25 - - 27, and the oscillatory output is taken from star - connected transformers 29 - - 31 through variable inductances 32 - - 34, couplings 42 - - 44, ammeters and condensers, to the three-phase power lines 39 - - 41. The coils 42 - - 44 traversed by the respective phase currents are variably coupled to three coils connected in series with variable reactances and an ammeter 48. By comparing the reading of the ammeter 48, obtained when its circuit is coupled to only one coil 42, with the reading obtained when coupled jointly to coils 42, 43, the phase angle may be determined. Any desired phase angles may be secured by adjustment of the angles a, b between the coils 16 - - 18. Other methods of measuring the angles between the current phases may be employed. The coils 16 - - 18 may operate directly into the transmission lines 39 - - 41.
Patent GB-108453-A (GB)
Title: Improvements in Processes for Vulcanizing Rubber and Products Obtained thereby.
Inventor: ERNEST HOPKINSON
IPC: C08K5/14
Filed: 1916-12-08
Abstract: 108,453. Hopkinson, E., (Astromislensky, I.). July 29, 1916, [Convention date]. Void [Published under Sect. 91 of the Act]. Vulcanizing materials and compositions.- Natural or synthetic rubber is vulcanized with or without the aid of sulphur by means of benzoyl peroxide, perbenzoic acid, and the like, ozonide of rubber, rubber chlorides, bromides, and hydrochlorides, or chlorides and bromides of synthetic rubbers, dimethylerythrene-ruber bromide, cauprene chloride or bromide, tri-nitrobenzene, nitroorganic dyestuffs, for example erythrosin, eosin, alkali-blue, and cinnamylidenefluorene. The claims comprise also the employment of peroxides, peracids, a rubber compound adapted to produce vulcanization, and sulphur-free organic dyes containing oxygen. Rubber is vulcanized by means of mixtures, such as :-Sulphur, trinitrobenzene, and lead oxide with or without naphthylamine; sulphur, lead oxide, and piperidenepiperidyldithic carbamate or in place of the latter isomylamine, hexamethyleneamine, hexamethyleneaminedithiocarbamate, or other aliphatic amine; and sulphur, zinc oxide, erythrosin, and piperidinepiperidyldithiocarbamate. In some cases, a temperature above 100‹ C. is necessary for vulcanization whereas in others it mav be carried out below this temperature or even at normal temperature. Rubber ozonide, referred to above, may be prepared by treating layers of rubber from 0.5 to 1 m.m. thick with a stream of dry air under the influence of rays from a mercury lamp. When the weight has increased by 0.2 to 1 per cent., the product is milled between cold rollers and reheated for 1-15 minute at 100-120‹ C. The halogen derivatures of rubber referred to may be prepared by the direct action of halogens on solutions of natural and synthetic rubbers.
Patent GB-1347062-A (GB)
Title: Multi-ply paper-making machine
IPC: D21F11/04
Filed: 1971-05-27
Abstract: 1347062 Paper-making apparatus BLACK CLAWSON CO 27 May 1971 [12 Aug 1970] 17665/71 Heading D2A A multiply paper-making machine comprises two endless foraminous belts 10, 20 providing a horizontal run 13 of the belt 20 and two opposed generally vertical runs 25, 26 of both belts; and stock deposition devices 30-32 for feeding stock to the horizontal and vertical runs. The belt 10 extends over suction rolls 11, 12, foils 16 and section boxes 17, and liquid is collected by a tray 18, and the belt 20 extends over foils 28, liquid being collected by a tray 29. Suction boxes may also be provided for the belt 20. The device 30 may be a pressure former. 25% of the finished sheet may be formed from stock delivered by the device 30 and 10% from that delivered by the device 31. Only two or more than three stock deposition devices may be provided. The web is transferred via a felt 41 to a press section.
Patent GB-1501430-A (GB)
Title: Method for producing a cylindrical lining segment frame for underground works
IPC: E21D11/08
Filed: 1975-04-29
Abstract: 1501430 Lining tunnels &c PONT-AMOUSSON SA 29 April 1975 [27 May 1974] 17703/75 Heading E1F Tunnel lining rings are formed from segments which each comprise circumferential reinforcing bars 3 embedded in concrete 12 and secured at their ends to segment end plates 1, 2. The ends of the bars are retained by a filler material (8), Fig. 2 (not shown), such as an epoxy resin, within cup-shaped housings 6 on the inner surfaces of the end plates. The plates may be provided with an inwardlydirected peripheral wall (14a, 14b), Fig. 4 (not shown). The segments may either be pre-cast, or alternatively the framework of bars arid plates may be assembled in the tunnel and the concrete cast in situ.
Patent GB-1343538-A (GB)
Title: Production of aliphatic cycloaliphatic and araliphatic  carboxamides
IPC: C07C/
Filed: 1971-05-23
Abstract: 1343538 Carboxamides BADISCHE ANILIN- & SODA-FABRIK AG 28 May 1971 [12 June 1970] 17720/71 Heading C2C An aliphatic, cycloaliphatic or araliphatic carboxamide is produced by reacting the corresponding nitrile with formic acid at elevated temperature in the presence of hydrogen chloride or hydrogen bromide. The nitrile may be unsaturated, may carry inert substituents such as halogen, C 1-4  alkoxy, hydroxy or formylamino groups, or may contain more than one nitrile group. Inert solvents or excess of one of the reactants may be used. In examples, valeronitrile yields valeramide, suberonitrile yields suberodiamide, hexahydrobenzonitrile yields hexahydrobenzamide, phenylacetonitrile yields phenylacetamide, propionaldehyde cyanohydrin yields α-hydroxybutyramide, N-formyl-α-amino isovaleronitrile yields α-N-formylvalinamide, and acrylonitrile yields #-chloropropionamide, in each case by passing HCI or HBr gas into the reaction mixture.
Patent GB-727000-A (GB)
Title: Automatic tuner
IPC: H03J7/16
Filed: 1953-06-26
Abstract: 727,000. Automatic tuning. STANDARD TELEPHONES & CABLES, Ltd. June 26, 1953 [June 28, 1952], No. 17741/53. Class 40(5). The tank circuit 2 of a radio transmitter R.F. stage is tuned to the input frequency by first traversing the condenser 10 through its range so that a condenser 3 is charged over diode 4 to a negative value corresponding to the maximum signal which is produced when the circuit 2 is tuned to the input frequency; the condenser 10 is then traversed through its range again, and when the positive output of diode 5 equals the negative charge on condenser 3, thyratron 27 fires to stop the traversing motor. Initially switch 25 is closed to make thyratron 27 non- conducting. On release of switch 25, contact 36 closes and the motor 39 rotates the variable condenser 10 to one extreme position of its range when limit switch 40 closes to energize relay 42 and step switch 21 to position B. Simultaneously, reversing switch 43 is operated to reverse the motor and run the condenser 10 through its whole range. The output of the tuned circuit 2 is applied over reversed diodes to resistance 15, so that the condenser 3 is charged to the maximum negative signal voltage corresponding to the circuit 2 being in resonance with the input frequency. At the end of the traverse of condenser 10, limit switch 40 is again momentarily closed to step switch 21 to position C, and simultaneously reversing switch 43 is actuated to reverse the motor so that the condenser is run back. At the point where the positive output from diode 5 equals the potential stored at 3, the valve 19 conducts to ignite thyratron 27 to open contacts 36 and stop the motor, to close contacts 44, 45 to initiate the tuning of the next stage, to close contacts 31, 32 and step switch 21 to position A, and to discharge condensers 3 over contacts 29, 30. The thyratron 27 remains fired until it is desired to re-tune circuit 2. To compensate for inertia of the motor 39, the tap 17 may be off-centre so that valve 19 conducts before the positive potential from diode 5 is equal to the negative potential stored on condenser 3.
Patent GB-1017826-A (GB)
Title: Improved scaffolding clamp
Inventor: RICHARDS LEONARD SYDNEY
IPC: E04G7/14
Filed: 1962-05-09
Abstract: 1,017,826. Clamp fastenings. SCAFFOLDING (GREAT BRITAIN) Ltd. April 23, 1963 [May 9, 1962], No. 17745/62. Heading E2B. A scaffolding clamp for securing a horizontal tube 28 to a vertical tube 11 comprises a first clamp part 10 which clamps around the vertical tube and a second clamp part which has a body 20 connected to the first clamp part and a pivoted arm 29 providing a curved seating to engage the curved surface of the horizontal tube, the arm being pivoted at the lower end of the body so that it can be swung down to open the second clamp part for the reception of the tube and then swung upwardly to a closed position and secured to the body of the second part by means of a clamping bolt 38 at the upper end of the body, thus clamping the tube between the arm and the body, the body being provided with a support portion 25 projecting outwardly away from the first clamp part, the portion being provided with a seating for the horizontal tube, the seating being generally part circular in cross section to conform with the periphery of the horizontal tube so that the horizontal tube can rest thereon without further support and is located in the correct position to allow the pivoted arms to be swung up into the closed position for clamping the tube between the arms and the body. As shown the body and arm are each of channel section and the clamping bolt has a T head by which it is pivoted to the body. It engages a slot 36 in the arm. The first clamp part is identical to the second and the two bodies are welded together.
Patent GB-741693-A (GB)
Title: Method for improving the resistance of clockworks against shocks
IPC: G04B31/02
Filed: 1953-06-26
Abstract: 741,693. Watch bearings. LIP SOC. ANON. D'HORLOGERIE. June 26, 1953 [June 27, 1952], No. 17756/53. Class 12 (1). A balance-wheel spindle is rotatably mounted in cylindrical bearing bushes C1, C2 made of polytetrafluoroethylene and fitted in cylindrical bores of opposed mounting plates D, E. Fillers such as glass fibres, mica or asbestos, may be incorporated in the polytetrafluoroethylene. Specification 657,080 is referred to.
Patent GB-476289-A (GB)
Title: Improvements in direct reading radiogoniometers
IPC: G01S1/02
Filed: 1937-06-25
Abstract: 476,289. Wireless directive signalling. PARISIER, M., and SOC. DES ETABLISSEMENTS HENRY - LEPAUTE. June 25, 1937, No. 17763. Convention date, June 26, 1936. [Class 40 (v)] To prevent interruptions or strong modulations in a transmission from giving false signals on a radiogoniometer, two pick-ups, mounted at an angle to each other, are rotated together, the second pick-up affecting the indicating instrument only when the signal transmission is interrupted. As shown, the search. coil C1 is rotated and the rotating lamp N is arranged to flash when no e.m.f. is induced in coil C1. The rotating frame C2, which is mounted at an angle to Cl, is connected to give a negative potential difference in valve T when no current is induced in the coil. Consequently during normal operation pick-up C2 has no effect on the system and the flashing of lamp N indicates the direction of the transmitter. If however the transmission is interrupted, the two coils affect valve T at the same time and act in opposition so that no current flows in the indicating circuit and a false signal is not given by lamp N.
Patent GB-1240963-A (GB)
Title: Fluoran compounds
IPC: C09B11/24
Filed: 1970-04-14
Abstract: 1,240,963. Fluoran compounds. FUJI PHOTO FILM CO. Ltd. 14 April, 1970 [17 April, 1969], No. 17767/70. Heading C4P. The invention comprises compounds of the general formula wherein R<SP>1</SP> and R<SP>2</SP> are C 1 -C 5  alkyl groups, e.g. methyl or ethyl. They are prepared by reacting a o - (4 - di(C 1 -C 5 )alkylamino - 2 - hydroxybenzoyl) benzoic acid with p-phenylphenol preferably in presence of a condensation agent e.g. 50-98% sulphuric acid, phosphorus pentoxide, polyphosphoric acid or zinc chloride. The compounds are used as colour formers on heatsensitive copying papers.
Patent GB-608573-A (GB)
Title: Production of metallic magnesium by ferrosilicon reduction
IPC: C22B26/22
Filed: 1944-09-18
Abstract: In the production of magnesium by thermal reduction of lime and magnesia-containing material with ferrosilicon, briquettes containing the starting materials in such proportions as to provide 110-130 per cent of the theoretical quantity of silicon necessary for the reaction, are heated in a retort under reducing conditions.  The starting materials may contain calcined dolomite and ferrosilicon, the ratio of calcine to silicon being between 1 : 0.160 and 1 : 0.189.  Specifications 606,636 and 606,641 are referred to.
Patent GB-1535024-A (GB)
Title: Method of treating a waste liquid containing polluting compounds
IPC: C02F1/52
Filed: 1977-04-28
Abstract: 1535024 Wastewater treatment D KROFCHAK 28 April 1977 17847/77 Heading C1C Waste aqueous liquid containing polluting compounds is treated by adding thereto an acidic ferrous salt solution to adjust thepH of the liquid to from 2 to 5 and to reduce pollutants in the liquid to a form capable of reacting with alkali to produce a precipitate, treating the acidified liquid with an alkali to raise the pH to from 9 to 12À5 and cause precipitation, and adding a silicic compound to the alkaline liquid to form large complex silicate molecules with the precipitate and thus cause the waste liquid to solidify. The acidic ferrous salt solution is preferably a solution containing ferrous sulphate and sulphuric acid, the alkali is preferably lime and/or caustic soda, and the silicic compound is preferably sodium silicate, cement, fly ash, general ash, siliceous slag, siliceous silt, clay, sand or soil of a silicic nature.
Patent GB-703053-A (GB)
Title: Improvements relating to gas cookers and the like
Inventor: BENTON WILFRED ERIC
IPC: F24C15/12
Filed: 1952-07-15
Abstract: 703,053. Cooker covers. FLAVEL & CO., Ltd., S. July 15, 1952, No. 17886/52. Class 126 A detachable dish-shaped cover plate 1 for a gas cooker A or the like may be utilised as a splash plate when the cooker is in use supporting brackets 6 for holding the plate in the splash plate position and comprising offset limbs 7 having inwardly projecting portions 8 for engagement with the cover plate being fitted to the rear 5 of the cooker.
Patent GB-292523-A (GB)
Title: A method of fixing discs upon shafts
IPC: F16D1/06
Filed: 1928-06-20
Abstract: 292,523. Akt.-Ges. Brown, Boveri, et Cie. June 20, 1927, [Convention date]. Securing turbine rotors &c. on shafts. - For securing to their shafts discs which are subjected to high temparatures and great centrifugal stresses, such as rotors employed in turbines &c., subjected to gases or vapours at high temperatures, both the shafts a and the disc d are formed with projections h, y, which may be oblique to the main axis on one face, extending into carresponding recesses in the other member, so preventing any radial movement of the disc. 'When projections with oblique faces are used, engagement upon such faces may be maintained by an axially acting spring. The disc may be shrunk into position and secured by a key. The projections h, y may as shown, be weakened for resilience. According to the Specification as open to inspection under Sect. 91 (3) (a) the disc d, Fig. 5 (Cancelled) is engaged at one end by a rectangular or oblique projection x on the shaft and at the other end bv a similar projection m on a washer k or on a nut which also carries a projection l engaging a recess in the shaft. This subject-matter does not appear in the Specification as accepted.
Patent GB-705647-A (GB)
Title: Improvements in or relating to feed arrangements for perforated tape transmitters intelegraph installations
IPC: H04L13/06
Filed: 1952-07-16
Abstract: 705,647. Telegraph transmitters. SIEMENS & HALSKE AKT.-GES. July 16, 1952 [Oct. 29, 1951], No. 18041/52. Class 40 (3) In a feed arrangement for perforated tape telegraph transmitters, the feed-wheel, which is intermittently stepped forward directly by a feedpawl actuated by a control cam mounted on the transmitter shaft, is loosely mounted on a fixed pin and is held fast in its momentary position by a retaining device constituted by a resilient jaw arrangement. The feed-wheel 1, stepped by a lever 4 rocked by a pivoted bell-crank 5 actuated by a cam 6 on the shaft 7, is held in its stepped position by a fixed member 11 and a member 10 having a channel 13 engaged by a projecting part 14 on a resilient member 12 fixed to the framework. The end of the feedpawl 4 engages with the base of the teeth 16 which have flat sides and rounded ends. The tape 2 is guided by flat members 17 and the curved inner surface of a guide member 18 so that three perforations 19 are simultaneously engaged by the rounded ends of the teeth 16.
Patent GB-222964-A (GB)
Title: Improvements in or relating to electric incandescent lamps, thermionic valves and similar devices
IPC: H01K9/04
Filed: 1923-07-12
Abstract: 222,964. Wise, N. July 12, 1923. Multiple-filament lamps; caps. - Multiplefilament lamps in which the ends of one filament .are brought out to the usual contact members 11, 12 on the cap 10 are provided with an additional covering-cap or caps 17 having two outer contacts 21, 22 similar to those on the ordinary cap, and inner contacts 23, 24 electrically connected with the outer contacts 11, 16 on the ordinary cap when the additional cap is applied. When more than two filaments are employed an additional covering-cap is provided for each extra filament, each additional cap having " bayonet " slots 26 for engagement with the usual lamp pins.
Patent GB-562390-A (GB)
Title: Improvements in or relating to closures or doors for gas or other cookers or the like
IPC: F24C15/02
Filed: 1942-12-22
Abstract: 562,390. Oven doors. TURLEY & WILLIAMS, Ltd., SMITH, C. D., and OTTON, D. H. Dec. 22, 1942, No. 18181. [Class 126] [Also in Group XXVI] The door or closure of a gas, electric, or other cooker is sealed by the engagement of a rib with a gasket having a flexible metal facing. Fig. 1 shows a door frame 3 formed with a groove 5 to receive asbestos tape or band 6 which is covered by a thin aluminium plate 7 secured to the frame by screws 8. Heat insulating material is inserted between the plate 7 and an enamelled sheet metal panel 4 forming the outer surface of the door. The body of the cooker is formed with a ridge 2 against which the door abuts. In a modification shown in Fig. 2 the asbestos packing is enclosed in a copper or aluminium sheath 13 which directly engages the ridge 2. In a further modification the asbestos packing is replaced by springs pressing the plate 7 against the ridge 2.
Patent GB-1221678-A (GB)
Title: Improvements in and relating to the control of the pressure of gas generated from a converter
IPC: C21C5/38
Filed: 1968-04-18
Abstract: 1,221,678. Controlling oxygensteelmaking. KAWASAKI JUKOGYO K. K. April 18, 1968 (Dec.22, 1967], No. 18341/68. Heading C7D. [Also in Division G3] The gas flow from the hood of a converter, in which oxygen is supplied from above to pig iron, is controlled by a damper in dependence on the pressure of gas in the lower periphery of the hood and one or more of the following: - (a) charging of the converter. (b) temperature within the lower periphery of the hood. (c) pressure within the mouth of the hood. In Fig. 1, oxygen is supplied to a converter 1 and the gases evolved are collected in a hood 2. Pressure in the lower part of the hood is compared with a reference pressure at 4 and any variation relative to atmosphere is automatically corrected by an electrical servosystem 5, 6 adjusting a damper in a conduit 7 through which the gases are withdrawn by a suction fan 8. The pressure at the edge of the hood is thus maintained at such a value that air does not enter to cause combustion. The gases withdrawn are cooled and cleaned at 9 and supplied to a gas holder (not shown) if the CO content is above a predetermined value otherwise they are exhausted to atmosphere. To provide anticipatory effects, the pressure maintained by the servosystem may be temporarily reduced by (a) a signal from a detector 15 responsive to pressure of the exhaust at a tap hole 14 and/or (b) a delayed signal from a detector 12 responsive to subsidiary raw materials, e.g. calcium oxide, supplied to the converter through a chute 13. In addition a signal from a detector 19 responsive to the temperature of the gas in the hood may cause the pressure maintained by the servosystem to vary in direct dependence on the temperature.
Patent GB-152154-A (GB)
Title: A shock absorber for pneumatic tools
IPC: B25D17/04
Filed: 1919-07-24
Abstract: 152,154. Howard, A. H. July 24, 1919. Percussive hand tools.-The cylinder 3 of a pneumatic hammer or riveter is slidably engaged by a socket 4 of the handle 1 and a spring 7, enclosed by a sleeve 8 secured to the handle, engages the handle and a flanged collar 5 secured to the cylinder and absorbs shocks. A projection 11 on the cylinder contains the throttle valve and projects through the socket 4; the valve is operated by a lever 12 pivoted to the handle. The shock-absorbing device may be applied to existing tools by use of a supplementary handle.