baber/WOPTO huggingface dataset:
Patent GB-337886-A (GB)
Title: Improvements in tunnel-boring machinery
IPC: E21D9/10
Filed: 1929-09-06
Abstract: 337,886. Price, J. H., Barnes, H., and Markham & Co., Ltd. Sept. 6, 1929. Tunnelling by boring.-In a rotary tunnelling-machine for use with a shield, the hub 9 of an inner cutter head 6 supports the oppositely rotating outer cutter head 5 and is keyed to a shaft 10 supported in a roller bearing 12 and a plain bearing 13, a thrust bearing 15 being also provided; a toothed wheel 19 secured to the hub 9, and an internally toothed rack 17 carried by the cutter head 5, are engaged by common pinions 29 whereby the opposite drive is effected. The pinions 29 are driven by electric motors 21 suspended from a girder 22 and acting through chains 23 and gearing 24 - - 28. Rollers 30, 31 on the shield 2 take the longitudinal and radial thrusts of the other cutter head. The shield is advanced by hydraulic rams 32 and has external fins 34. Scoops' 35 raise the spoil and deliver to a shoot 36. Specifications 13907/96 and 19756/02 are referred to.
Patent GB-903456-A (GB)
Title: Improvements in and relating to road building machines
IPC: E01C19/18
Filed: 1958-08-25
Abstract: 903,456. Road surfacing machines. HEISE, C., [trading as ALFELDER EISENWERKE C. HEISE KOMM.-GES.]. Aug. 25, 1958 [Aug. 23, 1957], No. 27200/58. Class 107. A road surfacing machine consists of a frame A running on wheels driven by motor 4 on rails, the surfacing material being distributed from a hopper 1 by worms 2, 2a which are rotated in opposite directions by the motor 4. A screed B made up of sections 9a, 9b, 9c and 9d is attached to the distributing part of the machine by flexible couplings 8.
Patent GB-1498409-A (GB)
Title: Electrical apparatus
IPC: G01P13/04
Filed: 1975-05-22
Abstract: 1498409 Waveform generator BRITISH AIRCRAFT CORP Ltd 22 May 1975 [19 June 1974] 27202/74 Heading G1A In a device, Fig. 1, for generating a signal varying with the angular position of a rotary member e.g. a shaft 6, a cover 1 houses a lamp 2 which directs light along a plurality of paths via a light transmitting block 3 and a light blocking plate 4 having a number of slits. Light from each slit passes via a rotatable plate 5 (one half opaque 8 the other half 7 plane polarized) and via analyzing elements 11, 12, 13, 14 to be received by phototransistors 21, 22, 23, 24. Opposite analyzing elements are polarized in similar directions. The pairs of outputs of photo-transistors 21, 23 and 22, 24 are combined together in opposite polarities to a differential amplifier, Fig. 3 (not shown), to provide a sine wave output and a co-sine wave output. In a modification a brushless resolver Fig. 4, two modulated (Sp, Sy) L.E.D. sources 2a, 2 are used to direct light separately on to two rings containing fixed polarized elements as above. The outputs of the photo-transistors are processed in a similar fashion to above to enable the device to resolve signals from a rotating set of axes to a fixed set of axes.
Patent GB-322826-A (GB)
Title: Improvements in the electrical reproduction of sound
IPC: H04H60/04
Filed: 1928-09-22
Abstract: 322,826. Green, H., and Celebritone, Ltd. Sept. 22, 1928. No Patent granted (Sealing fee not paid). Thermionic amplifiers. -A high-resistance potentiometer P, P' is arranged across each of a plurality of pick-ups G, G<1>, and a fixed condenser C, C' is connected in series between each pickup and the grid of the first valve V of a thermionic amplifier.
Patent GB-1510634-A (GB)
Title: Packaging
IPC: B65B1/16
Filed: 1975-09-11
Abstract: 1510634 Valves ALBRO FILLERS & ENG CO Ltd 11 Sept 1975 [20 June 1974] 27356/74 Heading F2V [Also in Division B8] A vacuum pressure regulating valve, e.g. for use in apparatus for charging powders into containers by suction comprises a diaphragm 41 attached to a piston 49 and having a plunger 47 for engagement with a flexible tube 45 through which the suction is applied, the lower side of the diaphragm 41 being open to the pressure in an outlet 48 upstream of the tube 45. A control pressure is applied to the piston 49 through an inlet 51, the space above the piston 49 being open to atmosphere via a filter 52, and the plunger 47 is operable to balance the control pressure and the pressure in the outlet 48 across the diaphragm 41.
Patent GB-1308994-A (GB)
Title: Dissolving pulp and process for the production thereof
IPC: D21C9/14
Filed: 1970-06-05
Abstract: 1308994 Wood pulp ETHYL CORP 5 June 1970 [5 June 1969 31 Dec 1969] 27362/70 Heading D2W Pulp is produced from lignin-containing fibrous vegetable material by subjecting it to at least one mechanical or combined chemicalmechanical operation, and discontinuing the operation when the yield is at least 64% by wt. based on the dry weight of vegetable material; reacting with chlorine dioxide or a mixture of chloric dioxide and chlorine, and extracting with an alkali solution of just sufficient strength for extraction of the pentosans. The operation may include refining, preferably under pressure and at elevated temperature, or an acid sulphate, neutral sulphite, soda, sodium xylene sulphonate or nitric acid prepulping, or by heating the vegetable material in contact with water. The reaction with ClO 2  may be performed alternately and repeatedly with a treatment with an alkali NaOH solution, preferably with a water wash between the two stages, the treatment with an alkali solution of just sufficient strength immediately preceding the final ClO 2  treatment.
Patent GB-740368-A (GB)
Title: A method for the spraying of metals
IPC: C23C4/129
Filed: 1952-10-31
Abstract: In a method of spraying metal by means of a metal spray pistol operating by combustion of gases, a principal electric field is generated by a potential between the point of a wire of the spraying metal and the surface to be sprayed and a second field, preferably provided by a high voltage high frequency alternating current circuit, is superimposed on the principal field.  The circuit of the superimposed field may be connected between the wire point and an electrode such as an annular electrode or one or more metal points between the wire and the surface.  Electron emission due to heat and ionization may be increased by providing electron-emitting substances in a core or coating of the wire, in the combustion gases or on the gun itself, or ionizing light such as ultra-violet may be used to irradiate the gases.  Alloying, or deoxidant substances such as ferro-titanium or ferro-aluminium may be included in the metal wire.
Patent GB-767231-A (GB)
Title: Improvements in or relating to gas filters
Inventor: FIELD SYDNEY JAMES
IPC: B01D45/10
Filed: 1954-09-22
Abstract: 767,231. Gas cleaning devices. OZONAIR ENGINEERING CO., Ltd. Sept. 15, 1955 [Sept. 22, 1954], No. 27454/54. Class 8(2) [Also in Group XII] Cleaning of a plate or group of spaced plates 13 coated with a viscous liquid serving to retain the dust content of gas passing over the plate or plates is effected by liquid discharged downwardly from a container 27 mounted at the top of and movable with a laterally traversable guided curtain 18 of such width as to shield from the dust-laden gas stream part of the plate or some of the plates being cleaned; the container 27 being supplied with filtered liquid from a sump 15 by means of a pump 30, a conduit 31 and a flexible connection 28. As shown a plurality of imperforate corrugated plates 13 are mounted in an open-ended frame 10, 11, 12 and the curtain 18 and container 27 are traversed by screwed rods 16, 17 driven from a motor 26 through chain and sprocket gearing.
Patent GB-628777-A (GB)
Title: Improvements relating to the manufacture of pottery ware
IPC: B28B1/02
Filed: 1947-10-14
Abstract: 628,777. Potter's jolleys. MIDWINTER, Ltd., W. R., and LATHAM, A. G. Oct. 14, 1947, No. 27462. [Class 87(i)] In a potter's jolley, the shaping tool c is adjustably carried by a block b<SP>6</SP> which is slidable in the pivoted arm b and is operated by air-pressure applied to a piston b<SP>4</SP> after the arm b has contacted a fixed stop f. The tool c may be replaced by a stamping or dating tool, the ware carrier a then remaining stationary.
Patent GB-730530-A (GB)
Title: Improvements in or relating to horizontal coke oven batteries
IPC: C10B29/08
Filed: 1953-10-06
Abstract: 730,530. Coke oven bracings. KOPPERS GES., H. Oct. 6, 1953 [Oct. 6, 1952], No. 27469/53. Class 51 (2). In a coke oven battery having an upper structure built of silica bricks and a lower structure of fireclay bricks, buckstays which extend over the full height of the oven structure, and an adjustable auxiliary bracing for one of the two structural sections, the overall length of the upper structure 2 is such that after heating up the battery the outer faces are substantially flush with those of the lower structure 1, Fig. 2, and the auxiliary bracing comprises an I-girder 16 extending substantially over the height of the oven chambers 4 and disposed between two 1-girders comprising the main buckstays 10. The buckstay girders 10 are held together by plates 17 and bolts 26 located in distance pieces 27, which latter extend through slots 28 in the web of the auxiliary girder 16. Initially the girder 16 is pressed against the upper structure by springs 18, the pressure of which is eased by adjusting screws 21 as the brickwork expands. When the expansion is complete the girders 16 may be removed, or the springs 18 may be replaced by rigid distance pieces. The buckstay girders 10 are cranked inwards to abut one another at the lower oven structure, Fig. 3 (not shown). Opposite girders 10 are held by the tie rods 11 below the regenerators 3, tie rods 12 in the roof of the battery associated with springs 15 and adjustable nuts 13, and the tie rods 29 extending through the rich gas ducts 8 in the oven sole 7 and associated with springs 31 and adjustable nuts 30. The tie rods 29 may be removed after the battery is heated up.
Patent GB-913269-A (GB)
Title: Improvements relating to furnace ladling apparatus
IPC: C21C7/10
Filed: 1960-08-08
Abstract: 913,269. Discharging molten metal. LINDBERG ENGINEERING CO. Aug. 8, 1960 [Sept. 8, 1959], No. 27469/60. Class 51 (2). [Also in Group XXII] Means for discharging molten metal from a furnace is adjustable between a condition in which it discharges the charge of molten metal to a point outside the furnace chamber and a condition in which it returns the charge to the furnace chamber and there is a stand-by control means which when actuated first adjusts the discharge means to its condition in which it returns the discharged metal to the furnace chamber, and then causes the discharge means to operate. A crucible 15 in the furnace chamber 11 is filled and discharged by alternately subjecting it to vacuum and discharging pressure by a pump 19. The melt is drawn by vacuum through the inlet passage 16 into the crucible to a level slightly above the inlet opening 17, atmospheric or a relatively low intermediate pressure being then applied to the crucible to force the level therein to the inlet opening level, and the level in the passage 16 to below this level. A high pressure is then applied to the crucible for discharging through the pipe 18. A launder 25 is movable between the positions 25, 25a by a cylinder 32, in the latter position the launder directing the discharge back to the furnace changer. The electrical control system comprises timers such that the apparatus will automatically shut down if the interval between discharging cycles exceeds a predetermined period which would tend to produce freezing of the melt in the crucible or discharge tube above the level of the metal in the furnace chamber. The launder moves to the position 25a and the crucible discharges into the furnace.
Patent GB-164658-A (GB)
Title: A new or improved tipping wagon
IPC: B60P1/12
Filed: 1920-09-28
Abstract: 164,658. Myott, A., and Cheetham, T. W. Sept. 28, 1920. Tipping-wagons.-The tipping body of a steam or motor wagon is arranged to project over the end of the under carriage, and is normally held in position by hooked levers at each side connected to a hand or foot operated lever and to tipping- mechanism, while the tail-board is automatically opened during tipping by connection to the under carriage. The body e is hinged about its middle on a rod and is held in normal position by hooked levers h engaging projections g, the levers being linked to levers k on a cross-shaft m carrying a hand-lever o adapted to be locked by a footcontrolled pawl o<2>. The levers h are also linked to bell-crank levers q adapted to contact with bowls r on the body to start the tipping. To raise' the tail-board at the same time, cross-rods x, x' thereon are connected to arms w<2>, w<3> of a threearmed lever connected to levers s secured to a shaft on the chassis.
Patent GB-854875-A (GB)
Title: Improvements in or relating to luminescent screens
IPC: H01J9/22
Filed: 1959-08-12
Abstract: 854,875. Luminescent screens. WESTING- HOUSE ELECTRIC CORPORATION. Aug. 12, 1959 [Aug. 27, 1958], No. 27540/59. Class 39(1). A luminescent screen is formed by placing an aqueous solution of a mixture of from 90 to 99À999% strontium acetate and from 10 to 0À001% barium acetate, a silicate solution of sodium and/or potassium silicate and a luminescent phosphor material in a settling container, e.g. a cathode ray tube, settling the phosphor and removing the excess solution. Reference has been directed by the Comptroller to Specification 801,752.
Patent GB-227946-A (GB)
Title: A radiator for utilising the waste heat of gas stoves
IPC: F24C3/04
Filed: 1923-11-03
Abstract: 227,946. Wilde, P. R. Nov. 3, 1923. Draught, inducing; heat-radiators.-A radiator for use with stoves comprises a receptacle A with an inlet a for the combustion products from the stove, baffles a<2> for giving a circuitous course to the gases on their way to the outlet a<1>, and absorbent material F arranged so that aqueous vapour deposited in it by condensation from the gases is re-evaporated by the heat of the, stove. The action of the vapour arising from the material F is stated to cause an increased draught.
Patent GB-749422-A (GB)
Title: Ship's propelling plant with two driving machines operating in one direction only
IPC: B63H23/00
Filed: 1954-09-24
Abstract: 749,422. Propelling ships. AKT.-GES. BROWN, BOVERI, & CIE. Sept. 24, 1954 [Sept. 26, 1953], No. 27626/54. Class 114. [Also in Groups XXIV and XXVI] In a ship's propelling plant with two driving machines 1, 5 which can only operate in one direction, each drives by way of a pinion 2, 6 respectively a reversing wheel 3, 7 in engagement with a unidirectional wheel 4, 8, wheels 2, 3, 4 forming one first gear stage and wheels 6, 7, 8 another first gear stage, the wheels of both these stages being distributed on both sides of a large gear wheel 15 and arranged concentrically with two large pinions 13, 14 of a second gear stage, and on both sides of the large pinions there is a disengageable coupling 9, 10, 11, 12 so that the unidirectional gear wheels 4, 8 of the first gear stages or the reversing wheels 3, 7 of the first gear stages can be coupled as desired with the large pinions 13, 14. If for instance couplings 9 and 11 are engaged the propeller shaft 16 and propeller 17 will rotate in the same direction as the prime movers 1 and 5 as indicated by the full-line arrows. If couplings 10 and 12 are engaged and couplings 9 and 11 disengaged, the propeller shaft will rotate in the opposite direction according to the broken-line arrow, whilst the direction of rotation of the prime movers remains unaltered. With this arrangement fewer gear wheels and bearings are required than usual since the large pinions which drive the large gear wheel operate in both directions of rotation and are thus always utilized.
Patent GB-172172-A (GB)
Title: An improved container for talking machine records
IPC: A47B81/06
Filed: 1920-09-29
Abstract: 172,172. Clark, A. Sept. 29, 1920. Cabinets for phonograph records. A pair of hinged gate legs d when opened support the lid c when turned back on its hinges. In a modified form, the lid is in two parts c, c<1> hinged together at h. The part c is carried on slides i which run in guides and can be pulled out endways as shown in Fig. 4.
Patent GB-696269-A (GB)
Title: An improved thermally-operated electric switch
IPC: H01H37/00
Filed: 1951-11-28
Abstract: 696,269. Thermal switches. GENERAL MOTORS CORPORATION. Nov. 28, 1951 [Dec. 15, 1950], No. 27861/51. Class 38 (v) In a switch suitable for controlling split phase motors heating of a wire 50 by current passing through it allows a spring-biased lever 40 to rotate counter clockwise so that notches 56, 55 in the lever successively carry the ends of bowed springs 60, 61, formed respectively by tongues of contact springs 32, 33, past dead centre positions causing contacts 37 and 38 to snap successively upwards out of engagement with contacts 21, 22. The lever 40 may be carried by a blade spring 34 fixed in place together with the springs 32, 33 by a rivet 35, the spring 34 bearing the lever 40 downwards. The current through the wire 50 passes in parallel through the two pairs of contacts and the breaking of the one circuit at 37, 21 may reduce the current in the wire so that the contacts 38, 22 remain closed. Assuming however that both pairs of contacts are opened and that the wire 50 begins to cool. The contact 37 will first tend to close due to its tongue 60 passing through a dead-centre position but this movement is prevented by the end 66 of the spring 33 which now bears against the spring 32. Eventually both pairs of contacts snap simultaneously into the closed position. Specifications 532,576 and 591,634 are referred to.
Patent GB-363403-A (GB)
Title: Distributors for telegraphy or the like
IPC: H04L5/24
Filed: 1930-09-18
Abstract: 363,403. Multiplex telegraphy. STANDARD TELEPHONES & CABLES, Ltd. and SANDEMAN, E. K., Columbia House, Aldwych, London. Sept. 18, 1930, No. 27891. [Classes 40 (iii) and 40 (v).] In a valve distributer for telegraphy and the like, each signal contact or time interval allotted to a signal element, is associated with a single valve, and the valves are sequentially rendered effective, to transmit the signal code elements set up, by a plurality of biasing waves fed simultaneously to each of the valves of the distributer. As shown in Fig. 1, biasing waves alpha1, alpha2, #1, #2 .. of frequencies dependent upon the number of letters set up per second on the contacts K of the transmitters P1, P2 .. are applied simultaneously to the grids of the valves Al, A2, A3 ... The waves alpha1, #1, gamma1, #1 and alpha2, #2, gamma2, #2 correspond in frequency, but differ in phase by 180‹ and are applied to the inputs of the valves so that a resultant wave of the form indicated in Fig. 2 is applied to the first valve during a cycle of sixteen time intervals as shown. The valve Al is biased so that it is made operative only during the first time interval to transmit to the line L a signal impulse from an a-c source C, if the associated contact K1 is closed. The biasing waves are fed to the valves so that in effect a resultant wave of the general form shown in Fig. 2, but displaced in phase by one time interval for each successive valve, is applied to the sequence of valves. Fig. 4 shows the circuit arrangements for the valve A1 in which the waves alpha1, #1, gamma1, #1 are applied through condensers 11 .. 14 and resistances 41 .. 44 respectively to the grid of the valve. Band pass filters F11.. , F21 .. F31 .., F41 .. passing the frequencies alpha1, #1, gamma1, #1 respectively are included to prevent the paralysing waves supplied to any valve from passing along the paths by which the waves are applied to other valves, and so appearing at the input of valves for which they are not intended. At the receiving end, a similar valve arrangement is provided, the valves being made operative in successive time intervals. The receiving printer relays included in the output circuits of the valves are operated only when a signal impulse is received during the time element corresponding to the valve in operation. Synchronism is maintained between the two ends by transmitting a wave alpha, from which the #, gamma and # waves at the two stations are derived. Specifications 344,444 and 348,543 are referred to.
Patent GB-927491-A (GB)
Title: Starting and induction motor
Inventor: CLAPHAM HAROLD EDWARD CAMERON
IPC: H02K17/40
Filed: 1959-08-14
Abstract: 927,491. Control of motors. BRUCE PEEBLES & CO. Ltd. Aug. 11, 1960 [Aug. 14, 1959], No. 27942/59. Class 38 (3). In an arrangement where the rotor winding of an induction motor 11 is connected in series with rectifiers 17 and the armature 12 of a D.C. machine for speed-control purposes, progressively variable starting resistors 16 are included in the connecting circuit. They may be on either the A.C. or the D.C. side of the rectifier. During starting, the excitation of the D.C. machine may be set to give the desired running speed or it may be at a maximum, in which case interlocks are provided to prevent closure of main switch 18 unless this condition is met, and unless the starting resistance is also at a maximum. After starting, the D.C. machine and the rectifiers may, perhaps, be disconnected and then the resistors are connected to a star-point. The D.C. machine is coupled to the rotor through belts or gearing, and assists in starting.
Patent GB-1445504-A (GB)
Title: Condenser microphone
IPC: H04R19/04
Filed: 1974-06-24
Abstract: 1445504 Electrostatic microphones AKG AKUSTISCHE U KINO-GERATE GmbH 24 June 1974 [26 June 1973] 27992/74 Heading H4J An electrostatic microphone comprises an electrode 3 having a surface wtih projecting pins 5 and a diaphragm 1. An unimpeded space (C) is provided for oscillation of the diaphragm 1 when sound impinges normally on the diaphragm 1. The pins 5 may have a concave face (5<SP>1</SP>), Fig. 3 (not shown) nearest the diaphragm 1 and, if the diaphragm bears against these concave portions, it assumes a contour such that the bending rigidity of the diaphragm makes it difficult for it to bear against the surface of the electrode. The diaphragm 1 may be an electret adhered to an annular mount 2 of insulating material. The electrode 3 has bores 4 for establishment of an air chamber with access to the atmosphere. The raised portions 5 are regularly distributed. If desired, the electrode may comprise a member of insulating material having a metallized surface and the end faces of the raised portions are then unmetallized. Such insulating material may constitute an electret.
Patent GB-777062-A (GB)
Title: New or improved heat resistant material and the manner of manufacture thereof
Inventor: GARDNER THOMAS HASSALL
IPC: C14C9/00
Filed: 1954-09-29
Abstract: 777,062. Heat resistant leather. STOKES & CO. (TANNERS), Ltd. June 30, 1955 [Sept. 29, 1954], No. 28056/54. Class 140. A heat-resistant material is composed of a leather base impregnated with asbestos. The impregnated base may subsequently be coated with an asbestos paste. The asbestos as a water paste may be mechanically worked into the leather by drumming. The material can be made into gloves, aprons, coats, armlets, leggings or headgear to provide protection against dry heat.