baber/WOPTO huggingface dataset:
Patent GB-283993-A (GB)
Title: Improvements in or relating to resistance-coupled amplifiers for low and medium frequencies
IPC: H03F3/02
Filed: 1926-10-15
Abstract: 283,993. Wade, H., (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). Oct. 15, 1926. Thermionic amplifiers for low and medium frequencies, of the kind employing resistance- . capacity coupling, are arranged to prevent the amplification of high frequencies. As shown in Fig. 1, the usual plate resistance 3, coupling condenser 5 and grid leak 7 are supplemented by a resistance 4 in series with the coupling condenser, and a small shunt condenser 8 connecting the grid to the fixed-potential end of the leak 7. A modification shown in Fig. 2 employs two series resistances 4, 9 and two shunt-condensers 8, 10. Fig. 3 shows a construction of coupling-unit, in which the resistances 3, 4 are wound on an insulating casing 21, enclosing the coupling condenser 5 and the leak 7. The shunt condenser 8 is constituted by a metal cap 10<a> closing the top of the casing 21, and by an outer case 9<a>. External connections are made by four plugs arranged to engage an ordinary valve socket. A modified construction of unit comprises an insulating foot 23, Fig. 5, carrying four upright metal studs 31 conductively connected to four terminals 29. The three resistances 3, 4, 7 are mounted on three of the studs 31, and the grid coupling condenser 33 is mounted on the fourth stud. The inner electrode of this condenser is separated by insulation from the stud 31, thus providing a capacity which serves as the shunt condenser 8. The unit is screened by a metal under-plate 25 and a cover 27 held in place by a central stem 26 and a terminal 28 which serves for earthing the screen.
Patent GB-861430-A (GB)
Title: Cellulose-p-xylyl-bis-ether
IPC: C08B15/10
Filed: 1959-07-27
Abstract: A p-xylyl-bis-ether of cellulose is disclosed.  The compound may be made by treating cellulose in liquid ammonia with metallic sodium to form a cellulosate, and then etherifying with a ,a 1-dibromo-p-xylene.  The product is yellow with a green fluorescence which persists in acid and alkaline solution.  The compound can be xanthated, formed into viscose, and spun in an acid regenerating bath in conventional manner to produce regenerated filaments and films having the original fluorescence. Blends of the compound with conventional viscose may be spun.  In a preferred method, one part by weight of cellulose is treated at -40 DEG  to -50 DEG  C. with 125 parts by weight of liquid ammonia, 0.212 parts by weight of sodium metal added, and the mixture stirred until the blue colour disappears.  0.244 parts of a ,a 1-dibromo-p-xylene is then added, and the mixture stirred at -45 DEG  C. for five hours, and then left overnight.  The ammonia is allowed to evaporate and the product acidified with acetic acid, washed and dried.
Patent GB-939563-A (GB)
Title: Liquid sprayer
IPC: B05B11/00
Filed: 1962-07-04
Abstract: 939,563. Spray-producers. HUNG-TONG LEE. July 4, 1962, No. 25701/62. Class 69 (3). A liquid sprayer comprises a container 1 for the liquid to be sprayed, a tube 16 extending into the container, a tubular depressable plunger 7 slidable in the outer end of the tube 16 and adapted to be depressed against a compression spring 18 mounted in the inner part of the tube, a spray head 10 on the outer end of the plunger, a valve 14 in the spray head adapted to allow the flow of liquid from the depressable plunger to the spray head and a valve 21 in the inner end of of the tube to allow the flow of liquid from the interior of the container to the interior of the tube. The internal diameter of the tube 16 is greater than that of the plunger 7. A rubber washer 17 at the bottom of the plunger 7, fitting in the tube 16, has a central bore. The valve 14 is a ball which closes downwards on a seat 15 and the valve 21 is a ball which closes downwards on a seat 20. An initial depression and return of the plunger are required before the sprayer starts to function. The depression produces an increase in pressure in the tube 16, causing the valve balls to move outwards, thus opening 14 and closing 21; and the return causes a partial vacuum, opening the valve 21 and closing the valve 14 and sucking some of the liquid in the bottle 1 into the tube 16. At the end of the return stroke the pressure in the tube is the same as that outside it and both the valves close under gravity, retaining some liquid in the tube. The next depression of the plunger causes an increase of pressure in the tube and liquid is forced through the washer 17, plunger 7 and open valve 14 and is ejected from the nozzle 12 as a spray. The tube and plunger are oval in cross-section to prevent rotation.
Patent GB-656128-A (GB)
Title: Improvements in or relating to receiving apparatus for radio navigation systems
IPC: G01S1/30
Filed: 1948-10-08
Abstract: 656,128. Radio navigation. DECCA RECORD CO., Ltd., O'BRIEN, W. J., BRIDGES, D. E., HENDLEY, D. A., EASY, M. H., and VICKERS, J. Oct. 8, 1948, No. 25735/49. Divided out of 656,108. Drawings to Specification. [Class 40 (vii] The subject-matter of this Specification is substantially the same as that described in Specification 656,108, with reference to the receiver for the radio navigation system. The claims are directed to navigation system receiving apparatus comparing the phase of radio signals of different but harmonicallyrelated frequencies wherein there is provided a reference signal generator producing signals of the different frequencies in a fixed multiplephase relation by receiving and distorting one of the signals of the system. Specifications 620,480, [Group XXXVI], and 630,698 are referred to.
Patent GB-921401-A (GB)
Title: Improvements in or relating to devices for releasing articles one at a time from chute-like supports
IPC: B65G47/29
Filed: 1961-07-17
Abstract: 921,401. Gravity discharge of articles. ADMOS Inc. July 17, 1961 [July 18, 1960], No. 25743/60. Class 78 (1). Articles 12 are released one by one from rollerway 10 to fall on to belt 14, by means of pivoted frame 16. Frame 16 carries roller 17, roller 18 and a skew roller 26. One of the rollers 17, 18 is normally held as in Fig. 1 in the grip between lever 46 and stop 38. Lever 46 is a bell-crank pivoted at 44 to stop 38, and influenced at 42 by piston 41 of solenoid 40. Stop 38 is pivoted at 35 and is pressed at 54 by the piston 41. Operation of discharge.-The operator operates solenoid 40, the piston 41 of which moves leftwards to swing lever 46 anti-clockwise. At the same time, piston 41 is removed from stop 38 which is therefore able to pivot clockwise. As a result, roller 18 is released and article 12 slides forward to the right causing the frame to rotate clockwise. The article 12 then moves further forward sliding over the frame as shown in Fig. 2 and being diverted by the askewpositioned roller 26 so that the lateral movement of the article frees it from the next article. The frame continues to move till roller 18 is positioned to check the next article 64. Roller 17 is then positioned between lever 46 and stop 38 which are ready to grip the roller.
Patent GB-1244153-A (GB)
Title: Improvements in or relating to boat building
Inventor: PERRY JOHN
IPC: B63B3/00
Filed: 1967-06-05
Abstract: 1,244,153. Constructing boats. JOHN I. PERRY (MARINE) Ltd. 5 Sept., 1968 [5 June, 1967], No. 25808/67. Heading B7S. A method of building a boat comprises securing pre-shaped transverse frames and bulkheads 11, 12 to a fore and aft datum member 10, securing longitudinal frames and stringers 14 and shell coverings (not shown) to the frames and bulkheads, and finally detaching all or part of the datum member which serves to define a straight deck line.
Patent GB-150558-A (GB)
Title: Improvements in and relating to means for preventing the theft or other unauthoriseduse of motor vehicles
IPC: B60R25/00
Filed: 1919-10-21
Abstract: 150,558. Birch, J. Oct. 21, 1919. Locking while standing.-The foot-pedal 24 of the brake is locked in the " on " position to prevent the unauthorized use of a motor-vehicle by a metal arm 1 pivoted at 2 and provided with a spring catch adapted to engage a complementary lock-member secured to the vehicle floor 7. It is released by a key. The pivot 2 is housed in a sheet metal casing 10 and the pivoted arm 1 is normally maintained in the inoperative position by a spring 20. The position of the pivot pin may be adjusted by the provision of a slotted plate; 12 for adapting the device for foot brakes of various constructions, or the lever may be telescopic. Hinged spring plates 16 maintain the pivot pin in position in the plate 12. The lever is of sheet metal with corrugations and with flanged sides and ends to protect the locking-mechanism. The device is stated to be applicable also for locking any other suitable lever of a braking system.
Patent GB-785848-A (GB)
Title: Improvements relating to lead-acid electric accumulators
Inventor: ROBINSON ROBERT GEORGE
IPC: H01M10/10
Filed: 1955-09-09
Abstract: 785,848. Batteries. PRITCHETT & GOLD & E.P.S. CO., Ltd. Aug. 21, 1956 [Sept. 9, 1955], No. 25836/55. Class 53. The electrolyte of a lead-acid battery consists of a mixture of dilute sulphuric acid and fine particles of silica of sub-micron size. The mixture may contain 8-24 per cent by weight of the silica having a particle size of about 0.015 Á and may be whisked to lower its viscosity prior to pouring into the battery.
Patent GB-700365-A (GB)
Title: Improved process of preparing cholesterol
IPC: C07J75/00
Filed: 1951-11-05
Abstract: Cholesterol is prepared by dissolving crude cholesterol in an aqueous alkali metal hydroxide solution, e.g. potassium, sodium or lithium hydroxides containing at least 85 per cent. by volume of alcohol, crystallizing cholesterol from the solution thus formed and separating said crystallized cholesterol.  The crystallized cholesterol is washed with separate portions of alcohol and water.
Patent GB-1155991-A (GB)
Title: Improvements in Machines for Harvesting Tall Crops.
Inventor: ZAGORSKI JACEK JANUARIUSZ
IPC: A01D47/00
Filed: 1966-06-10
Abstract: 1,155,991. Harvesting machines. MASSEY-FERGUSON (AUSTRALIA) Ltd. 7 June, 1967 [10 June, 1966], No. 25870/66. Heading A1F. A top cutting device adapted to be mounted at an upper forward location on a machine for harvesting tall crops, e.g. a sugar cane harvester, comprises upper and lower gathering arms 11, 12 diverging forwardly from a narrow throat within which is located a rotary cutter 21, each arm being mounted on a substantially vertical pivot axis 31 or 14 and being connected to means for pivoting the arms about their axes so that the positions of the arms can be interchanged whereby arm 11 is always adjacent uncut crop. The arms 11, 12 carry endless chains 15, 16 fitted with cropengaging fingers and driven by a reversible hydraulic motor 22 so that the inner runs of the chains always move towards the throat. The motor 22 also drives the rotary cutter 21 and a rotary flinger 34 adapted to throw tops cut by the cutter to one side of the device. The arms 11, 12 are connected to a common linkage operable by a ram 46 to effect simultaneous pivoting of both arms. A deflector plate 35 is provided to guide cut tops to one side of the device and comprises a number of hinged parts 36-38. The deflector plate is moved from one side of the device to the other when the arms are interchanged by means of a lever system. Reference has been directed by the Comptroller to Specifications 972,578 and 1,079,562.
Patent GB-1389381-A (GB)
Title: Cyanine dyes and spectrally sensitized silver halide photographic emulsions containing these dyes
IPC: G03C1/22
Filed: 1973-05-30
Abstract: 1389381 Hemicyanine dyes FUJI PHOTO FILM CO Ltd 30 May 1973 [31 May 1972] 25886/73 Heading C4P Hemicyanine dyes for sensitizing silver halide emulsions are of formula (in which R<SP>1</SP> and R<SP>2</SP> are each optionally substituted alkyl; R<SP>3</SP> and R<SP>4</SP> are each carboxylic acyl or alkoxycarbonyl). The dyes are prepared by conventional condensation reaction.
Patent GB-461289-A (GB)
Title: Improvements in circuit arrangements for operating a plurality of induction furnaces
IPC: H05B6/08
Filed: 1935-09-18
Abstract: 461,289. Supply systems for highfrequency apparatus. SIEMENS & HALSKE AKT.-GES. Sept. 18, 1935, No. 25940. Convention date, Nov. 15, 1934. [Class 38 (iv)] Induction furnace plant comprises a number of furnaces of the ironless type, the circuits O1, 02 of which are individually tunable and which are connected in series with one another to the output of a single alternating current generator Q. The individual circuits may be tuned by variable capacities K1, K2 or by varying the number of turns of the induction coils O1, O2 by means of tappings. A variable capacity K may be connected in the main conductor between the furnaces.
Patent GB-885790-A (GB)
Title: Polyethylene products and their production
IPC: C08K5/14
Filed: 1959-07-29
Abstract: Polyethylene products are prepared by a process which comprising reacting polyethylene reactants, having melt indices of 0,2 to 20 and an average of at least one ethylene bond for each 4000 carbon atoms, with not more than 0,1% by weight of a free-radical-forming compound, said compound being distributed throughout the polyethylene reactant before a significant proportion of the compound has reacted with the polyethylene reactant, the reaction being continued until the melt indices of the polyethylene reactants have been reduced by at least one half to produce polyethylene products having melt indices of 0,001 to 10.  The polyethylene reactant is preferably a linear, high density polyethylene.  Specified radical-forming compounds are dicumyl peroxide, dibenzyl peroxide, benzoyl peroxide, lauroyl peroxide, acetyl peroxide, dichlorobenzoyl peroxide, diethyl peroxide, di-tert. butyl peroxide, di-tert. amyl peroxide, tert. butyl hydroperoxide, cyclohexane hydroperoxide, peracetic acid, perbenzoic acid, monopersuccinic acid, ethyl perbenzoate, tert.-butyl perbenzoate, tert.-butyl peracetate, 1,1-bis(tert. butyl peroxy) cyclohexane, 2,2-bis(tert.-butyl peroxy)-1-phenyl propane, 2,2-bis-(tert.-butyl peroxy) propane, zinc peroxide, sodium persulphate, a , a 1-azobis (a , d , d -trimethyl valeronitrile), a , a 1-azobis (a -cyclopropyl propionitrile), dimethyl b , b 1-azodiisobutyrate, a , a 1-azodiisobutyronitrile, azodicyclohexane carbonitrile and b -hydroxyethylazo-a , d -dimethyl valeronitrile. The reaction is preferably carried out with the polymer in the molten state. The radical-forming compound may be added to the molten polymer in the form of a dilute solution or dispersion in an inert, volatile medium in which the polymer is soluble or with which it is miscible, specified media being hexane, benzene and low molecular weight polyethylene waxes.  The products may be used in the manufacture of shaped articles, e.g. films, pipes and bottles, by extrusion and injection moulding.  Specifications 471,590, 593,929, 608,333, 619,905 and 783,487 are referred to.
Patent GB-146073-A (GB)
Title: Improvements in or relating to the manufacture of tubs, vats or the like
IPC: B27D1/08
Filed: 1919-10-22
Abstract: 146,073. De la Grandville et Cie, H. June 27, 1919, [Convention date]. Apparatus for making receptacles from sheet material. Conical tubs, vats, &c. are formed of a number of plies a', a<2>, a<3>, Fig. 6, of wood, &c., each ply being formed from a separate blank and the various plies being glued and then pressed into one another by means of a plunger c, which co-acts with a mould b and has a shoulder c<1>. A ply-wood bottom d may be pressed in place by a resilient member c<2> arranged below the plunger c.
Patent GB-628228-A (GB)
Title: Cooled rotors
IPC: F01D5/08
Filed: 1947-09-24
Abstract: 628,228. Gas turbines. AKT.-GES. BROWN, BOVERI, & CIE. Sept. 24, 1947, No. 25961. Convention date, Sept. 24, 1946. Drawings to Specification. [Class 110 (iii)] In gas turbine and other rotors, which are constructed with hollow interiors, cooling effects are produced by convection currents in the enclosed air or gas. According to the invention, these effects are increased by placing the enclosed gas under pressure. The interiors may be filled with hydrogen. A single hollow rotor may carry the blades of both the air-compressor and the turbine.
Patent GB-710855-A (GB)
Title: Improvements in or relating to water-jacketed furnaces for the heat treatment of articles
Inventor: ROYCE JAMES
IPC: C21D9/663
Filed: 1950-10-25
Abstract: 710,855. Bell-type furnaces. FURNACES, Ltd., R. G. Jan. 2, 1952 [Oct. 25, 1950], No. 25997/50. Class 51 (2). [Also in Group XI] In an electrically heated bell-type furnace, the bell comprises a water-cooled steel jacket 9 lined with a 3 inch thickness of iron-free aluminous firebrick 13 to which the electrical resistors 15 are attached. The bell has a lower flange 11 seating on the flange 25 of a water-cooled base 24 and detachably secured thereto by bolts 27 pivotally mounted on said base 24 and engaging notches in the periphery of the flange 11 where they are secured by wing nuts 30, a suitable gasket being provided between the flanges. The flange 11 is also formed with apertured lugs 21 engaging guide posts 22 mounted on a framework 23 and fixed in the ground. Cooling water admitted into the base at 33 passes through a flexible connection 34 to the water jacket 9 and is discharged through a top outlet 35, and inlet and outlet ports 31 and 32 respectively are provided for a protective furnace atmosphere, which may be steam generated in the water jacket.
Patent GB-1462924-A (GB)
Title: Concrete forming structure
IPC: E04G11/50
Filed: 1974-06-12
Abstract: 1462924 Beam for use in concrete form work; wall and floor formwork ALUMA BUILDING SYSTEMS INC 12 June 1974 [18 Jan 1974] 26045/74 Headings E1K and E1S Wall or floor formwork comprises panels fixed to supporting beams, e.g. 14 (Fig. 5) which are of I-section or hollow, e.g. 70 (Fig. 9) each of which has an upwardly-open rectangular channel along its upper edge e.g. 52, in which a rectangular-sectioned stiffening member e.g. 50 is maintained, and a lower T-sectioned slot e.g. 48, which is used for fixing the beam to a supporting structure. The stiffening member may be of wood, e.g. and may be fixed in position by ridges 64 or 110 on the channel, fasteners 61, or adhesive, or a combination thereof. The bottom flange 62 of the embodiment of Fig. 5 is downwardly concave, and the beam embodiment 70 of Fig. 9 has laterally facing fixing slots 104 in addition to the lower one (92). The floor formwork (Fig. 1) is supported on trusses 12 which may have pivotable jacks 36 (Fig. 4) mounted thereon, and includes stop end shutters 78 fixed to the edge beam 70 (Fig. 9). The wall formwork includes beams 14 which are more closely spaced at the lower edge of the wall. The beams are fixed to their supporting structure either by clips 44 (Fig. 4) or merely by bolts 116. The beams are preferably aluminium extrusions. Reference has been directed by the comptroller to Specification 1384437.
Patent GB-391112-A (GB)
Title: Improvements in processes for treating alloys containing iron and manganese
IPC: C22B47/00
Filed: 1931-09-17
Abstract: Alloys containing iron and manganese are smelted with media containing oxygen and sulphur to form a slag rich in manganese and of low melting point.  The alloy, for example a spiegel iron containing 14 per cent of manganese, is pre-refined in a basic bessemer converter, or a reverberatory or open hearth furnace, air serving as oxygen containing medium, to give a viscous slag consisting mainly of manganous oxide.  Sulphur, iron pyrites, pyrrhotite or other sulphide having a heat of formation not higher than that of manganese sulphide is added before or during the refining to reduce the viscosity.  Loss of sulphur is reduced by oxidizing the alloy so far as to produce some iron oxide in the slag before adding the sulphur.  The iron content of the dilute slag is reduced by adding unrefined spiegel iron, carbon, aluminium, chromium, &c., to the melt in a reverberatory or open hearth furnace with a slightly reducing atmosphere, or in an arc or induction electric furnace.  The resulting slag rich in manganous oxide and sulphide is poured for the extraction of manganese, by oxidation and reduction, or other known methods. The remaining metal melt is completely refined without the addition of sulphur in a converter or open hearth furnace, to give a slag containing about equal proportions of iron oxide and manganese oxide, and some silica, lime, phosphorus, &c.  This slag may be poured and treated with a fresh melt of spiegel iron with the addition of sulphur in a furnace having a neutral or slightly reducing atmosphere, this step being the equivalent of the pre-refining.  One and the same open hearth furnace may be employed for the final refining of the low manganese alloy and for the reduction of the dilute sulphide containing slag with fresh spiegel iron, the slag and metal being tapped alternately and the necessary addition of sulphur made as required.
Patent GB-134229-A (GB)
Title: Process and Devices for Effecting the Synthesis of Nitric Acid.
Inventor: LOUIS AUGUSTE MAGE
IPC: C01B21/20
Filed: 1919-10-24
Abstract: 134,229. Mage, [known as Nouguier], L. A. Oct. 24, 1918, [Convention date]. Void [Published under Sect. 91 of the Act]. Drawings to Specification. Nitric acid.-In the synthetic production of nitric acid by the action of electric discharges on a mixture of air and water vapour, the output of nitric acid is increased by preliminarily ozonizing the air when dry; or by supersaturating the air with water vapour, some of the water appearing in the form of very small drops; or by arranging that the moistened air is brought to a temperature of 50‹ C. before entering the reaction apparatus; or by rapidly circulating the gases through the reaction apparatus; or by a combination of these methods. Similar apparatus may be used for ozonizing the air and for effecting the synthesis of nitric acid.
Patent GB-224691-A (GB)
Title: Improvements in stenter clips for stentering machines
IPC: D06C3/04
Filed: 1923-10-20
Abstract: 224,691. Farrell, E. Oct. 20, 1923. Tentering. - The front part of the sole plate c is spaced slightly from the top of the link a, so that it yields by its own flexibility to the pressure of the clip tongue b. This may be effected by recessing the top of the link or by bending the sole plate upwardly. The soleplate may be made in one piece, as shown, or in two parts hinged or detachably secured together, the rear part being fixed to the link. The edges of the sole plate may be bent downwardly to prevent dust &c. from entering the space a'. The sole plate may be slitted at its front part to equalize the grip on the fabric. The Provisional Specification describes also an arrangement in which the clip tongue is made to engage the plate yieldingly.
Patent GB-247632-A (GB)
Title: Improvements in mounting mangle rollers and the like on shafts
IPC: D06F45/22
Filed: 1925-08-04
Abstract: 247,632. Poyser, G. W. Aug. 4, 1925. Securing rollers on shafts.-Wooden rollers ,such as for domestic mangles and wringers, are secured on round or square shafts c by means of end discs a, provided with three or more cylindrical projections b to engage holes f in the roller d and with a flange f disposed outside the ring of projections and adapted to exclude water and prevent splitting of the wood. In the case of square shafts, the discs a fit thereon and are held in place by the machine bearings, while in the case of round shafts, taper pins e or other securing means are employed.