baber/WOPTO huggingface dataset:
Patent GB-710276-A (GB)
Title: Improvements relating to electrical rectifying circuits
Inventor: HARDIE ALEXANDER MERRIE
IPC: G05F1/52
Filed: 1951-08-20
Abstract: 710,276. Automatic voltage control systems. METROPOLITAN - VICKERS ELECTRICAL CO., Ltd. July 23, 1952 [Aug. 20, 1951], No. 19580/51. Class 38(4) The amplitude of the output of a pulse ;generator is maintained, constant by comparing the amplitude of integrated pulses with a reference voltage, using the resultant error signal to width modulate a square wave, and using the trailing edge of this modulated wave to control a rectifier supplying the pulse generator. Pulses from the generator are passed via a lengthening circuit to an integrator R 10 C 10  and control valve V 1  cathode coupled to valve V 2 . A reference voltage is tapped off potentiometer P 2  and applied to the grid of valve V 2 , the circuit being arranged so that when the pulses are of the required amplitude, the anode voltages of V, and V 2  are equal. Any departure from this value of pulse amplitude will cause a change in the voltage of the anode of V 1  which is connected through relay contacts S to the grid of valve V,. Valves V 3  and V 4  are cathode coupled and constitute a square wave generator. For externally generated, negative going, sawtooth wave is applied to the grid of V 1 , and the point along the saw tooth at which V 4 , cuts off (and V 3 conducts) depends upon the magnitude of the voltage applied to the grid of V 3 . Hence at the anode of V 3  there appears a square wave having a fixed leading edge and a trailing edge which varies in phase according to the deviation of the controlled pulses from the desired amplitude. The modulated square wave is differentiated by C 2  R 6  and applied to the grid of the valve V 5  which eliminates the positive going pulses (due to the leading edge) and amplifies and inverts the negative going pulses- (due to the trailing edge). These pulses are passed by a cathode follower V 6  to the control grid of the thyratron rectifier (not shown). If the error voltage derived from V, V 2  is excessive then relay S is actuated to apply a fixed bias to the grid of valve V,. The sawtooth wave is generated, Fig. 5 (not shown), by charging a condenser through a pentode, and discharging it by a gas filled triode triggered by pulses derived from the A.C. supply to be rectified. In a modification, Fig. 3 (not shown), the cathode resistor of valves V, V 2  is replaced by a third valve arranged so that the total current passed by V 1  and V 2  is maintained substantially constant.
Patent GB-530912-A (GB)
Title: Improvements in or relating to bearings for scientific, measuring, and other precision instruments, and to other machine or tool parts from which great hardness and wear-resistance is required
IPC: G01C17/00
Filed: 1939-07-05
Abstract: 530,912. Forging-punches. NAGY, A. July 5, 1939, No. 19631. [Classes 83 (ii) and 83 (iv)] Making bearings, dies, &c. -Hard metal bearings for scientific instruments, navigating compasses, scales, watches, countertrains for meters, speedometers &c. are produced from a block of hard metal, such as sintered carbides of tungsten, titanium, molybdenum, vanadium, tantalum or boron with a binding agent such as cobalt, by heating to a temperature of about 1300‹C. and pressing in the cavity by a punch 17, tipped with a diamond 18 of the required shape. The pressure'is maintained until the block has cooled and a precision recess with polished walls results. The process may be applied to the production of dies such as heading and drawing dies. In the latter case an initial hole is formed by grinding as in Specification 521,697 [Group XXIII]. Specification 245,654 [Class 83 (ii)], also is referred to.
Patent GB-451150-A (GB)
Title: Fluid manifolding devices
IPC: B01J8/02
Filed: 1935-07-10
Abstract: In reaction apparatus containing a contact mass C and having a single or double fluidmanifolding member A, B embedded in the mass, perforated inserts 10 of corrosion- and erosion-resisting material are provided to restrict the flow of fluids from the manifolding <PICT:0451150/III/1> <PICT:0451150/III/2> member.  The inserts may be secured in place by any known means such as driving, peening, screw threads, welding, &c.  The perforations may be protected from the catalytic material by a sheet of foraminous material 20 as shown in Fig. 8.  The openings may be flared on one or both sides as in Fig. 4.  Another modification has a convex surface 18, Fig. 9, to which several apertures of equal length lead from a central cavity 19. Specification 414,779 is referred to.
Patent GB-1269793-A (GB)
Title: Heat insulating compositions
IPC: B22D7/10
Filed: 1969-04-17
Abstract: 1,269,793. Heat insulating compositions. LENIN KOHASZATI MUVEK. 17 April, 1969 [27 May, 1968], No. 19754/69. Heading C3N. A process for preparing heat insulating -compositions for lining feeders to reduce the volume of feeder heads, comprises heating a granular, porous, refractory material to a temperature of 200-300‹ C., impregnating the hot refractory material by stirring with 10-30% by volume of a tar or bitumen which is at a temperature of 200-300‹ C. but below its flash point, cooling the impregnated granules to below the hardening point of the tar or bitumen, optionally adding up to 30% by volume, calculated on the impregnated mixture, of washed clay-free quartz sand and mixing the resulting granular heat insulating material with 1-25% by volume, based on the total refractory material, of an organic or inorganic binding agent conventionally used in the foundry industry. The porous refractory material may be diatomaceous earth, particulate perlite, blast furnace slag foam or ground fire clay. The binding agent may be water glass in an amount of about 8% by volume, synthetic resin such as a furan resin in an amount of about 2.5% by volume, clay, or bentonite in an amount of about 12.5% by volume. The binding agent may be used with a catalyst or agent promoting the binding. The tar or bitumen is preferably heated to a temperature 50- 80‹ C. below its flash point and the impregnated particles may be cooled to a temperature below 25‹ C.
Patent GB-265249-A (GB)
Title: Improvements in or relating to water tube boilers
IPC: F22B17/10
Filed: 1925-08-05
Abstract: 265,249. Chalk, J. T. Aug. 5, 1925. Water-tube boilers. - A boiler having nests of tubes g<1> arranged on each side of the combustion chamber and connected to upper headers d<1> forming the top of the combustion chamber is fitted with nests of secondary circulation tubes m<1> placed on the path of the escaping gases and connected to the steam drums A' and to collectors b<1>. Tubes h<1> connected to the steam drums A<1> and to lower drums e<1> pass between the tubes of the main tube nests to retard the flow of gases. The front tubes f<1> of each of the main tube nests are connected to the end of the upper header of the opposite nest, and the rear tubes n<1> are connected directly to a steam drum. Downcomers r<1> - r<4> open into lower headers k<1> in communication with the lower headers c<1>. The headers k<1> are connected to the collector drums b<1> by tubes l<1>. Tubes s connecting the lower drums e<1> form a water-cooled floor. In modifications, only one steam drum is provided, and the separate upper headers of the main tube nests are replaced by continuous bent headers. Further, the tubes f<1>, h<1> on each side may be connected to a separate header, and the tubes f<1> on each side may pass vertically from the upper headers to a lower central drum connected to the lower drums e<1> by tubes forming the water-cooled floor. The lower drums e<1> may be replaced by two pairs of headers connected by two sets of oppositely inclined floor-cooling tubes. The faces of the headers may be joggled to enable right-angle joints to be made with the tubes. The back wall of the combustion chamber is formed bv a row of vertical water tubes connected to headers and covered with firebricks. In a double-ended boiler, the water-tube back walls of the two combustion chambers are spaced apart to form a partition between the chambers.
Patent GB-974461-A (GB)
Title: Traffic control system
IPC: G08G1/081
Filed: 1963-05-17
Abstract: 974,461. Road signals for controlling traffic. THOMPSON RAMO WOOLDRIDGE Inc. May 17, 1963 [May 28, 1962], No. 19773/63. Heading G4Q. A traffic control system comprising a plurality of junction traffic light sets, each comprising a local controller, is provided with a computer which holds the operation of a local controller at a point in its cycle until a release command is given; means for storing a programme in the computer for computing an operating plan and determining release times in dependence on existing traffic conditions; a time of day clock; and means for transmitting a release command when a predetermined release time and time of day coincide. Each local controller comprises a contact 32 which rotates over fixed contacts 38, 40, 42, 44 to sequentially light the red, green and amber lights of the two phases. In order to prolong a green phase one or other of solenoids 50 is energized, moving its plunger to prevent contact 32 from rotating, the energization being effected by tones transmitted from the computer. When the time of day occurs for a release command to be given, the appropriate tone from the computer is interrupted releasing the plunger of one of the solenoids and allowing the contact 32 to rotate to the next phase in the cycle. Failure of the command tones allows contact 32 to continue rotating giving independent control at each junction.
Patent GB-282707-A (GB)
Title: Improvements in rotary pumps
IPC: F04C2/10
Filed: 1927-07-26
Abstract: 282,707. Tuthill, J. B., (Assignee of Wilsey, I. H.). Dec. 29, 1926, [Convention date]. Movable-abutment type; reversing; packing abutments.-In a rotary pump which comprises internally meshing gears 22, 45 housed in a casing provided with a pair of packing members 18, 19 which bear on the periphery of the outer gear 22 to separate the inlet and discharge chambers 20, 21, the inner pinion 45 and a crescent shaped filling block 47 are carried by a disc 39, loosely rotatable in the casing, which has a pin 50 abutting against one of two diametrically opposed stops 48, 49 on one end cover so that, on reversal of the direction of rotation of the pump, the pump delivery remains unaltered by reason of the disc 39 being frictionally turned through 180‹ to abut against the other stop whereby the filling block 47 is moved to a diametrically opposite position. The disc 39 is pressed against the gears by a spring 51. Pressure fluid is admitted to the rear of the packing members 18, 19 from either the inlet or the discharge chambers by passages 36.
Patent GB-1188610-A (GB)
Title: Improvements relating to Difficultly Water-Soluble Azo Dyestuffs which can be used as Dispersion Dyestuffs, and their use
IPC: C09B31/14
Filed: 1968-04-26
Abstract: 1,188,610. Mono- and dis-azo dyestuffs. J. R. GEIGY A.G. 26 April, 1968 [28 April, 1967], No. 19864/68. Addition to 1,109,628. Heading C4P. The invention comprises dyestuffs containing no ionic groups forming salts in water and having the general formula wherein A is a carbocyclic or heterocyclic aromatic radical which may contain an arylazo group, one of X 1 , X 1  and X 3  is -O-, -S- or -NH- and each other X is -NH-, at least one of R 1 , R 2  and R 3  is a radical -alk -O-Z wherein alk is an optionally substituted alkylene radical and Z is H, an acyl radical or an optionally substituted hydrocarbon radical and the other R's each represent an optionally substituted alkyl, cycloalkyl, or aralkyl group or a phenyl radical bound by -O- or -S- to the pyrimidine nucleus. Preferably A is a phenyl radical having a nitro group in the o- and/or pposition to the azo link which may be further substituted or a benzthiazolyl-(2)- radical optionally substituted by chlorine, bromine, nitro, cyano, thiocyano, alkyl, alkoxy or alkylsulphonyl. Other values of A specified include naphthalene, pyrazole, thiazole, oxadiazole, thiodiazole, triazole, pyridine, benzothiazole, indazole or quinoline. They are prepared by diazotization and coupling or by acylation of the corresponding compound where at least one R 1 , R 2  and R 3  is -alk-OH. Coupling may take place in presence of methanol, D.M.F., ethylene glycol monoethylether or cetyl or oleyl polyglycol ethers. The dyestuffs give yellow, orange, red and brown shades on hydrophobic organic textile fibres e.g. polyesters, cellulose 2¢ and triacetates.
Patent GB-152464-A (GB)
Title: Improvements in pump plungers
IPC: F04B53/16
Filed: 1919-08-13
Abstract: 152,464. Marks, E. C. R., (Worthington Pump & Machinery Corporation). Aug. 13, 1919. Plungers; waste liquid, returning.-The hollow plunger 15 of a pump is so constructed that leakage liquid is discharged therefrom by the reciprocating movements of the plunger. In one form, the plunger has a hollow extension 17 opening into a chamber 18, so that when the plunger moves to the right the liquid in the plunger flows through the extension 17. The pipe 17 may have a check valve 20 to prevent return of the ejected liquid. The other end of the plunger may have an extension 21 connected to the plunger rod 22 and opening into a chamber 26.
Patent GB-801659-A (GB)
Title: Improvements in or relating to fumigating compositions
IPC: A01N25/20
Filed: 1953-07-17
Abstract: A fumigating composition comprises a pest-controlling substance, e.g. insecticide (including a larvicide, ovicide or acaricide), fungicide or bactericide, having a flash point not lower than about 180 DEG  C. as determined by the open cup method referred to in the Specification, in admixture with a self-combustible composition comprising a mixture of melamine or dicyandiamide with a highly oxygenated compound, e.g. potassium chlorate, capable of yielding oxygen to support combustion of the melamine or dicyandiamide under confined conditions.  The proportion of potassium chlorate used may be from 0.9 : 1 to 6.5 : 1 parts by weight, and preferably within the range of 2 : 1 to 3 : 1 based on the weight of melamine or dicyandiamide.  The self-combustible composition or fumigating composition may also contain a chemically inert material, e.g. china clay, talc, diatomaceous earth as a diluent or as an absorbent for a low melting pest control substance may also serve to moderate the burning rate.  A stabilizer such as zinc oxide, magnesium oxide or titanium dioxide, may also be incorporated in the fumigating composition.  Specified pest controlling substances are di-(para - chlorophenyl) - trichlorethane, benzene hexachloride or para-chlorophenyl-benzene sulphonate.
Patent GB-473920-A (GB)
Title: Improvements in speed indicators for motor-road vehicles
IPC: G01P1/10
Filed: 1936-07-20
Abstract: 473,920. Speed indicators. CHANDLER, E. H. July 20, 1936, No. 20027. Convention date, July 22, 1935. [Class 106 (iii)] The speed at which a vehicle is being driven is automatically indicated at the front and rear of the vehicle by a series of differently coloured lamps 4, 5, 6 which are successively lighted and extinguished as the vehicle passes from one speed range to the next. The lamp box is provided with hoods 12, lenses 10, and reflectors 9, and the lamp circuits are closed by the selective attraction of armature contacts 22, 23, 24 by electromagnets 29, 30, 31. Locking latches 36, 37, 38 for these contacts are released by the action of electromagnets 40, 41, 42. The speed-responsive control device comprises a pivoted wiper 63 movable by a centrifugal governor 71 over banks of contacts, the governor being driven from the gear-box 61 or other moving part of the vehicle. The Specification includes circuit diagrams for the above-mentioned construction and also for (a) a construction wherein the lifting of any one locking latch releases directly by a rock-shaft all the other latches, and (b) a construction wherein each speed range is subdivided into two groups by the use of two lamps of the same colour adapted to be lighted simultaneously.
Patent GB-596934-A (GB)
Title: Improvements in or relating to blinds
IPC: B60J1/20
Filed: 1945-08-06
Abstract: 596,934. Blinds. ACCORDO BLINDS, Ltd., and GILL, L. Aug. 6, 1945, No. 20139. [Class 20(iii)] A blind comprises a sheet of pliable material with a plurality of tensioned extensible members attached transversely each having runners at both ends displaceable along tracks arranged on opposite sides of the window as shown, spring rods 13 pass through sleeves 12 in the pleated pliable sheet 11. Eyed screws 14 with runners 15 attached are connected at both ends of the rods and pass through slots 7 in the window frame 5 and 6 to which are attached rails 8 with tracks 9 on which the runners travel.
Patent GB-148232-A (GB)
Title: Furnace plant for annealing metals without tarnishing
IPC: C21D1/74
Filed: 1920-07-09
Abstract: 148,232. Mond, A., (Metallbank und Metallurgische Ges.). July 9, 1920. Charging. - In connexion with furnaces a for annealing metals in a non-oxidizing atmosphere, a sealed charging and cooling chamber b, sufficiently large for workmen to enter and carry on the necessary operations, is provided. T h e chamber b is filled with non - oxidizing gas, and the workmen, who are provided with respirators, enter it either through the pit f and door h, or the sealing-pit e, both of which are filled with a heavy gas. A number of furnaces may open from one charging-chamber. The chamber b may be circular, with an annular conveyer for the goods, which passes through an arcshaped furnace chamber. The floor of the furnace may be situated at a higher level than the floor of the charging-chamber, in which case a lift is provided for raising the trucks with the goods to the required level. If desired, the pit e may be filled with a non-oxidizing liquid instead of a heavy gas, and separate charging and cooling chambers may be provided.
Patent GB-1310754-A (GB)
Title: Process for the production of polyurethane-based one-compo nent systems which are stable on storage and which dry quickly in contact with atmospheric moisture
IPC: C08G18/80
Filed: 1970-04-28
Abstract: 1310754 Polyurethanes BAYER AG 28 April 1970 [3 May 1969] 20296/70 Heading C3R Polyurethanes containing isocyanate groups and tertiary nitrogen atoms are prepared by reacting an aromatic polyurethane, allophanate, polyurea, biuret or isocyanurate which contains isocyanate groups and has a M.W. of less than 3000 with a polyether alcohol which is obtained by the alkoxylation of ammonia, an aliphatic amine with 2 or 3 nitrogen atoms and 1 to 4 hydrogen atoms bound to nitrogen atoms, hydrazine or a hydrazine, one or two hydrogen atoms of which are substituted by aliphatic radicals and containing at least two hydrogen atoms bound to a nitrogen atom, in an NCO/OH ratio of at least 1À4, the polyether alcohol containing at least one tertiary nitrogen atom with at least 5 ether groups between the tertiary nitrogen atom and the hydroxyl groups. Polyether polyols which do not contain tertiary nitrogen atoms may also be incorporated in the reaction mixture. The process may be carried out in polar organic solvents. The prepolymeric polyurethanes and allophanates may be prepared by reacting aromatic polyisocyanates with polyalcohols, the polyureas and biurets  by reaction of aromatic polyisocyanates and water and the isocyanurates by polymerization of aromatic isocyanates. The polyether alcohol may be prepared by the ethoxylation, propoxylation or butoxylation of ammonia, dibutylamine, ylecyyclohexlamine, piperazine, ethne diamine, N,N<SP>1</SP> - dimethyl ethylene diamine, stearylamine, methyl - bis - (3 - aminopropyl)- amine, methyl hydrazine and symmetrical and asymmetrical dimethyl hydrazine. Coatings and films may be prepared from the polyurethanes by contact with atmospheric moisture.
Patent GB-1503893-A (GB)
Title: Container for pressurised liquids
IPC: B65D8/04
Filed: 1976-05-18
Abstract: 1503893 Container closures SCAL SOC DE CONDITIONNEMENTS EN ALUMINIUM 18 May 1976 [23 May 1975 13 Feb 1976] 20518/76 Heading B8D A container for gasified liquids, e.g. beer, comprises a cylindrical body 1 closed at each end by a respective closure member having a frusto-conical or conical portion 5 located within the body and a base edge 6 which is turned back towards the outside of the container and heat-sealed to the body inboard of the respective body edge, the heat-sealed joint being reinforced by an annular filling of rigid foamed plastics 7 situated at least in the peripheral channel defined between the closure portions 5 and 6. External wound strips of adhesive, thermo-contractible material 12 and 13 reinforce the body and/or body/closure seals. The body and closure members are wound and hot-formed respectively from laminated sheet comprising external polyethylene layers 2, 2<SP>1</SP>, 4 and 4<SP>1</SP> and intermediate aluminium foil layers 3, 3<SP>1</SP> with the body preferably incorporating an additional paper layer. In a modification, Fig. 1 (not shown), the turned-back closure member edge 6 is relatively short and the foamed plastics laps and bonds additionally to the body.
Patent GB-315359-A (GB)
IPC: G08B15/00
Filed: 1929-07-04
Abstract: 315,359. Duquesne, F. A. July 12, 1928, [Convention date]. Burglar alarms.-An automatic alarm and pro. tective device for the doors of dwellings comprises a detonating apparatus actuated by the unauthorized opening of the door. A signal announces that the nullifying device is set and that the apparatus is disengaged. When a spring- pressed dog 6 is released by a tumbler 11, Fig. 8, a hammer 7 detonates a blank cartridge in a gun A, Figs. 2 and 6, slidably mounted in guides 1 and having a pivoted base-member 3. The gun is concealed by a hood. The tumbler 11 is turned into the operative position by the door 35 engaging a rod 22 when the latter is set. A bell 28 actuated by a pin on the rod 22 is sounded when the rod 22 is moved to the inoperative position in order to indicate that the door may be opened. The idle bolt of the lock may engage, in the event of a forced entry, a projection on a pivoted belt which is thereby wedged in position out of the path of the idle bolt, and retains the detonating apparatus in the operative position. A locking-device may be provided for the pivoted bolt to hold it in the operative position, in the event of a skeleton key being used to actuate the idle bolt.
Patent GB-1126277-A (GB)
Title: Improvements in or relating to manometers
Inventor: GADD GEORGE EDWARD
IPC: G01L13/04
Filed: 1966-05-10
Abstract: 1,126,277. Pressure gauges. NATIONAL RESEARCH DEVELOPMENT CORP. June 9, 1967 [May 10, 1966], No. 20625/66. Heading G1L. In a manometer comprising a "U"-tube provided with a bend 12 and two vertical sections 10, 11 connected to two water pressure connections connected to two pressure sources 14, 17 to be compared such as static and pitot heads, the arrangement is such that three valves 20, 21 and 24 are open and water is sucked into the U-tube through a connection 22 until the water level in section 11 is slightly above the level of a capillary tube 13. The valves 24, 21 are closed and the water level is lowered by adjusting a plunger 30 until a meniscus in the capillary tube 13 reaches a "zero" position, indicated by a fixed pointer 15, and the valve 20 is then closed. When a pressure reading is to be taken the valve 21 is opened to a second water pressure from source 18 and if this pressure is greater than the pressure from source 14 the water level in a constant level chamber 16 will rise compressing the gas in bend 12 and so displacing the meniscus in tube 13. Second and third plungers 32, 31, which may be coupled by a dowel 34, are then adjusted together or separately to restore the meniscus in capillary tube 13, to the original position opposite pointer 15 and since the volume displaced by the plungers 31, 32 can be correlated with the pressure differences in the U-tube a direct measurement of pressure can be obtained by a reading from a micrometer dial gauge 36 which measures the axial movement of plunger 31.