baber/WOPTO huggingface dataset:
Patent GB-817236-A (GB)
Title: Apparatus for mixing pulverulent materials
IPC: B01F33/40
Filed: 1957-05-17
Abstract: 817,236. Pulverulent materials, facilitating mixing of, by gas currents. COMPAGNIE FRANCAISE BLAW-KNOX, S.A. May 17, 1957 [Feb. 21, 1957], No. 15793/57 Class 86 Apparatus for mixing pulverulent materials by gas currents comprises a tank 1 divided into a charging and mixing compartment 2a and a discharging compartment 2b having an upper outlet 5, by a partition 3, having an adjustable slide 4 in order that the compartments are interconnected at their lower ends, a perforate or porous bottom 8 for the tank, and chambers 6, 7 for the compartments 2a, 2b respectively, separated by a partition 11 and supplied with compressed air through inlets 9 and 10 respectively. The outlet 5 may be above or below the free level of the materials in the compartment 2a, according to the pressures of air supplied to the compartments. In a modification, the chamber below the compartment 2a may be divided into a plurality of chambers each having a separate air inlet which may be selectively adjusted to increase turbulence of the materials. If desired several tanks each as described above may be connected in cascade, the tanks in this case being tilted. In a further modification, two tank units as described above are incorporated in a single elongated tank, the discharge compartment of the first tank unit having a conduit extending upwardly from its top and discharging into the charging compartment of the second tank unit.
Patent GB-357519-A (GB)
Title: Improvements in or relating to internal combustion engines of the liquid fuel injection type
IPC: F02F1/42
Filed: 1930-05-22
Abstract: 357,519. Combustion chambers. CLERGET, P., 38, Rue Boileau, Paris. May 22, 1930, No. 15810. Convention date, May 25, 1929. [Classes 7 (ii) and 7 (iii).] The combustion chamber 3 of a fuel-injection engine has a part of its wall formed as an upward extension of the cylinder and shaped as shown in plan in Fig. 2. The inlet and exhaust valves 1, 2 are so disposed in the cylinder head that the air traverses a U-shaped path and rotates in the cylinder after the valves are closed. Fuel entering through an injector 5 is divided by being projected on to a protruding part 6 of the combustion chamber. The speed of rotation of the air may be increased by admitting it under pressure. A recess 4 in the piston is similar in shape to the combustion chamber. Alternative arrangements of the valves are described. Several fuel injectors may be located in the combustion chamber. The Specification as open to inspection under Sect. 91 (3) (a) states that mixture may be employed instead of air. This subject-matter does not appear in the Specification as accepted.
Patent GB-825947-A (GB)
Title: Recuperative heat exchangers
IPC: F28F21/04
Filed: 1956-05-22
Abstract: 825,947. Tubular heat exchangers. SCHACK, A., [trading as REKUPERATOR KOMMANDIT - GESELLSCHAFT Dr ING. SCHACK & CO.]. May 22,1956 [May 25, 1955], No. 15849/56. Class 64(3) Ceramic inserts 2 are retained in position within the mild steel tubes 1 of a heat recuperator by projections 3 welded or otherwise secured to the tubes and engaging in grooves provided in the inserts. In the form shown the inserts are provided with longitudinal grooves 7, the lowermost of a plurality of inserts provided within each tube having also a transverse annular groove 7a which engages with the projections 3, and the end of this insert extending to the end of tube as shown in Fig. 3 to prevent overheating of the tube by the entering hot gases. The tube plate 4 is likewise protected by a ceramic mass 5.
Patent GB-158754-A (GB)
Abstract: 158,754. Webster, A. Dec. 2, 1919. Lighting -torches, non-electric. -A frictional burner-igniter comprises a bifurcated wire frame or stamping 1 carrying at one end a cylinder 2 containing a spring-pressed flint pin 3 which is in contact with a friction wheel 4 mounted on a spindle 5 carried by the frame 1. The spindle is bent at one end 7 to engage a hole or recess 8 in the wheel 4 and at the other end is bent to form a thumbpiece 10. By turning the spindle 5 against the resistance of a spring 9 and then releasing it, the wheel 4 is rotated rapidly against the flint 3 and produces sparks.
Patent GB-182303-A (GB)
Title: Improvements in or relating to automatic machines for feeding fibrous materials to carding-engines or other preparing machines
IPC: D01G23/00
Filed: 1921-06-09
Abstract: 182,303. Walker, J. W., and Platt Bros. & Co., Ltd. June 9, 1921. Feeding carding-engines &c.-In an automatic feeding-machine, a hinged or movable grid, which can be readily lowered and lifted and secured in the closed position, is arranged to form the floor of the hopper. The grid c is pivoted at c<1>, and provided with pivoted handles f, which can engage bayonet-slots e in a bar d<1>. The lattice a may be nearly vertical, and the movable back b be pivoted at a point b<1> some distance away from the lattice.
Patent GB-1201608-A (GB)
Title: Improvements in or relating to heat exchangers
IPC: F28D3/02
Filed: 1966-10-31
Abstract: 1,201,608. Cooling liquids. NATIONAL RESEARCH DEVELOPMENT CORP. 23 Oct., 1967 [31 Oct., 1966; 7 April, 1967], Nos. 48647/66 and 15992/67. Heading F4S. Liquid to be cooled passes through holes in the bottom of a tray or trough to be distributed by projections on the bottom of the tray or trough over the outer surfaces of a heat exchanger formed by two upright opposed walls. As illustrated, liquid in a trough 37 passes through holes 44, 45 in the bottom of the trough over projections 42 formed on an inverted channelsection member secured to the bottom of the trough. Liquid falls from the projections, which may be perforate or imperforate, to flow over the outside of a refrigerant evaporator formed by two walls shaped to provide a serpentine refrigerant channel 52. The evaporator is slung from the bottom of the trough by arms 46 which engage pins 51 on the evaporator. The trough is detachably secured to a casing 30 which has a liquid entrance 35 and exit 33. In other embodiments, Figs. 1 and 3 (not shown), the distributer is in the form of a circular tray with two sets of projections arranged around its lower periphery, one set leading liquid over the outside and the other over the inside of an annular evaporator. The bottom of the tray is domed so that liquid in it tends to flow towards two circular arrays and holes at the tray periphery. Liquid from the outer array flows on to the outer projections and vice versa. The projections may be perforate or imperforate and have pointed or convexly curved lower edges. The evaporator is slurry from the lower of a casing surrounding the apparatus and the tray is mounted on the evaporator by pins which engage bayonet or keyhole slots in the evaporator.
Patent GB-1426177-A (GB)
Title: Detection of drugs
IPC: G01N33/94
Filed: 1972-04-07
Abstract: 1426177 Drug detection TRADE & INDUSTRY SECRETARY OF STATE FOR  4 July 1973 [7 April 1972] 16148/72 Heading G1B Habit-forming psychotropic drugs are detected by reacting the said drug with an acidic aqueous  solution containing thiocyanate ions and a substance which lowers the surface tension of the aqueous solution whereby a colour complex is  formed. The thiocyanate ions may be derived from a solution of cobalt thiocyanate. The surfacetension-lowering substance may be an anionic or non-ionic surfactant, a liquid aliphatic alcohol, liquid aliphatic ketone, liquid aliphatic nitrile,  cyclic ether or sulpholane. The acidic aqueous solution is preferably provided by an oxo acid of phosphorus. The reaction is particularly applicable to the detection of cocaine, methaqualone, methadone and phencyclidine. The above method of detection of habit-forming psychotropic-drugs may be part of a sequence of tests for drugs comprising a test for cannabis, a test for hallucinogens a test for narcotics and amphetamines, a test for habit-forming pychotropic drugs and a test for barbiturates. The sequence of tests may be carried out using a kit comprising a container holding filter papers and a combination of spot test reagents suitable for carrying out the sequences of tests, at least one of said reagents being an acidic solution containing both thiocyanate ions and a substance which lowers the surface tension of the solution.
Patent GB-291466-A (GB)
Title: Improvements in automatic speed regulators
IPC: H02P7/06
Filed: 1927-10-05
Abstract: 291,466. Seguin, L., and Seguin, A. Oct. 13, 1926, [Convention date]. Divided on 279,071. Drawings to Specifications. Void [Published under Sect. 91 of the Acts]. Centrifugal governors.-A centrifugal governor for controlling the speed of stroboscopic apparatus as described in Specification 279,071 and illustrated in Fig. 2 of that Specification.
Patent GB-457787-A (GB)
Title: New monoazo dyestuffs
IPC: C09B29/08
Filed: 1935-06-04
Abstract: Monoazo dyes are made by coupling diazotized 2 : 4 : 6-trinitroaniline or a homologue thereof with an N-sulphatoalkyl- or N-alkyl-N-sulphatoalkyl-derivative of m-toluidine.  They colour acetate artificial silk, silk, wool and leather in violet to blue shades and may be used for the direct printing of acetate artificial silk.  In examples, dyes are described from diazotized 2 : 4 : 6-trinitroaniline and the N-sulphatoethyl-, N-g -sulphatopropyl- and N-n-butyl-N-sulphoethyl derivatives of m-toluidine.  Specifications 181,750 and 237,739, [both in Class 2 (iii)], are referred to.
Patent GB-302703-A (GB)
Title: New or improved advertising sign
IPC: G09F13/14
Filed: 1927-06-20
Abstract: 302,703. Ta' Bois, P. L. June 20, 1927. Daylight reflectors.-A display sign of the type in which the incident and emergent rays both pass through the front of the sign is characterized in that the reflecting surface, located behind the display front, is constituted by a row of reflecting strips disposed in substantially parallel planes inclined to the front. In the construction shown in Fig. 2, the reflecting strips 18 are formed by silvered surfaces of a piece of glass 16, and light rays 20 incident on the front of the sign are refracted, reflected. and refracted again, finally proceeding along the line 21. When the sign is so placed relatively to the observer that the incident and emergent rays correspond to the lines 20, 21, the incident rays are refracted more than the emergent rays, with the consequence that the divergence of the emergent beam is less than that of the incident beam, thereby tending to make the luminous effect of the sign greater than if there were no refraction. The sign may be used with daylight or artificial light. The reflecting surfaces may be flat as shown in Fig. 2, or curved, and they may be ribbed either lengthwise or transversely. In the construction shown in Fig. 4, the reflecting surfaces 31, 32 are so arranged that the light rays are reflected twice. The reflecting surfaces may be of polished metal placed behind a stencil. A stencil may be formed on or attached to the front of the sign, or the reflecting surfaces may be made in the shape of letters or of the article to be displayed. Two sets of reflecting surfaces, inclined at different angles to the front of the sign may be employed, so that each section of the sign is visible to an observer only when the sign as a whole is moved into the appropriate position. Or, instead of having two sets of inclined surfaces, one set may be inclined and the other portion of the sign may have a plain reflecting surface.
Patent GB-561526-A (GB)
Title: Colouring of plastic dental materials
IPC: A61K6/02
Filed: 1942-11-18
Abstract: Plastic dental materials, e.g. as powders to which liquid, e.g water, is added, are coloured by adding colouring matter to the liquid.  Two or more differently coloured liquids may be used. Plaster of Paris, acrylic resin and aniline dyes are mentioned.
Patent GB-852585-A (GB)
Title: Adhesive tape
IPC: C09J7/38
Filed: 1957-05-22
Abstract: 852,585. Transparent pressure sensitive adhesive tape. BERGSTEDT, M. A. May 22, 1957 [May 31, 1956], No. 16312/57. Drawings to Specification. Class 140. A normally tacky and pressure sensitive adhesive tape for use as a splicing tape for cinematograph film comprises a flexible backing possessing good optical transmission, dimensional stability, high softening point, high tensile and tear strength, provided with perforations coincident with those on a film strip of matching width, a primer coat of good optical transmission on one side of said backing, and an adhesive coat of good optical transmission on said primer coat, said adhesive coat containing a polyvinyl ether as an elastomeric base. The backing may be a polyethylene terephthalate or cellulose triacetate film. The polyvinyl ether may be a vinyl alkyl ether polymer having an intrinsic viscosity from 3 to 15 and wherein the alkyl group has between 2 and 4 carbon atoms. The primer coat may comprise a butadiene-acrylonitrile copolymer mixed with a butadiene-styrene copolymer or a polyisocyanate-rubber elastomer. The side of the backing opposite the adhesively coated side may be provided with a backsize coat which may contain stearate chromic chloride, an octadecyl acrylate-acrylic acid copolymer or polyvinyl carbamate. The adhesive tape may be perforated to register with the perforations in film to be spliced. Examples of plasticizers, tackifiers, and stabilizers are given.
Patent GB-180572-A (GB)
Title: A device for honing safety razor blades
IPC: B24D15/08
Filed: 1921-06-14
Abstract: 180,572. Heron, W. E., and Davison, J. June 14, 1921. Stropping-apparatus.-In a device for honing safety-razor blades, the blade 1 is fixed in a holder 2 by means of a clamp-plate 3 and nut 4. Guide-bars 5, 6 fixed to the holder slide in a bracket 7. The bar 5 has a loose handle which permits of oscillation of the holder. Pivoted roller cams 8, 9 tend to remain vertical against stops by the action of springs. The cams are alternatively vertical on alternate strokes of the holder, which is thereby oscillated to bring the edges of the blade against two of a set of four adjustable stones 14.
Patent GB-457792-A (GB)
Title: Improvements in and relating to the power unit and transmission gearing for motor vehicles
IPC: B60K5/10
Filed: 1935-06-05
Abstract: 457,792. Tractors. NORTH O. D., 76, Elm Park Mansions, Park Walk, Chelsea, and HUGH, P. G., and SCAMMELL LORRIES, Ltd., 52, High Holborn, both in London. June 5, 1935, No. 16341. [Classes 79 (ii), 79 (iii), and 79 (iv)] A power unit for tractors comprises an internal-combustion engine 1, means on the engine crank-case for suspending it in a vehicle frame, a clutch housing 5 fixed to the crank-case, a casing 6 enclosing the change-speed gear 7, two trains of reducing gear 8a, and differential gear 11, the rear part of the casing 6 having axle housings 13 fixed thereto, so that the whole unit is mounted as a rigid unit with three-point suspension on the axles and a part of the vehicle connected to the said suspending means. In the construction shown, a forwardlyextending bracket 3 is fixed to the crank-case 2 and has lugs 4 connected by a trunnion or ball joint to the vehicle frame (not shown). The road wheels 15 are mounted on the axle tubes 13, and a castor wheel 30 may be attached when the power unit is detached from the vehicle or tractor. Stays 16 are provided between the clutch housing 5 and the axle tubes 13. Spring suspension means, such as those described in Specification 457,607, may be provided between the axle tubes and the vehicle frame, and lateral movement of the power unit is prevented by a link 19 pivoted to the frame and to the power unit. A pulley 24, housed in the bracket 3, drives a cooling fan 27 or a dynamo or both, the fan sending cooling air through a cowl 28 arranged over the engine cylinders. The change-speed gear has the lay shaft 20 below the main shaft and drives the axle shafts through two trains of reducing gear comprising bevel gearing 8a and spur gearing. Worm gear may be used instead of bevel gear.
Patent GB-581296-A (GB)
Title: Improvements in and relating to aerial tuning systems for radio transmitters
IPC: H03J5/24
Filed: 1944-08-29
Abstract: 581,296. Aerial coupling arrangements. TENENBAUM, B. Aug. 29, 1944, No. 16392. [Class 40 (v)] A tuning arrangement for aerial circuits for transmission on two or more wave ranges has the fine tuning on some ranges controlled by a variable inductance and on the others by a variable condenser. These variable impedances are adjustable by the same knob, only one of them being inserted in the aerial circuit at a time. A tapped inductance or tapped inductance and tapped condenser may be used for the rough tuning of the circuits and the contact arms of the switches bringing about this tuning may be mounted on the same spindle as contact arms which switch in various tappings on the coils for adjustment of the coupling between the aerial circuits and the output stages of the transmitter. The condenser a and movable coil h which are the fine tuning means of aerial circuits A, B respectively, are connected to a common spindle indicated by C. In circuit A the coupling between the output stage and the aerial circuit, effected by coils band b<1>, is varied by rotation of movable arm d of switch c. In circuit B the coupling is varied by means of switch l which is connected to fixed tapped coil g, and rough tuning is obtained by means of switch i connected to fixed tapped coil f. Movable arms d, j, m are connected on a common spindle. The aerial is connected either to switch arm d or j according as trans-. mission is to be effected on short or on medium waves.
Patent GB-916776-A (GB)
Title: Foamable thermoplastic polymers
Inventor: PLATZER NORBERT
IPC: C08J9/00
Filed: 1959-05-13
Abstract: A foamable material comprises a thermoplastic polymer of a monovinylidene aromatic hydrocarbon and/or halohydrocarbon or a mixture of such a polymer with another polymer which polymer or mixture contains more than 50% by weight of the hydrocarbon and/or halohydrocarbon, and has uniformly dispersed therein at least 0,5% by weight of an inorganic filler powder and 3-10% of an aliphatic hydrocarbon boiling in the range 10 DEG -100 DEG C. alone or admixed with another organic liquid boiling in the same range. Lists of suitable fillers and hydrocarbons are given.  Polymers specified are:- homopolymers of, e.g. styrene or interpolymers with, e.g. butadiene, isoprene, acrylic acid, methyl-, ethyl-, 2-ethylhexyl acrylates and methacrylates, acrylamide, methacrylamide, acrylonitrile, methacrylonitrile, mono- and dialkyl esters of maleic and fumaric acids, vinyl formate, acetate and stearate, ethylene, acenaphthalene vinyl and vinylidene chlorides, vinyl methyl ether and vinyl butyl ether. The monovinylidene compound may be partially replaced by, e.g. a  methyl- or a  ethyl styrene; op- or m-vinyl toluene; op- or m-ethyl styrene, a  methyl 2,4-dimethyl styrene; 2,4-dimethyl or 2,4-dichlorostyrene; o-, p- or m-chlorostyrene; or 2-chloro, 4-methyl styrene.  The polymers preferably have a M.W. (Staudinger) of 40,000-100,000.ALSO:A foamable material comprises a thermoplastic polymer of a monovinylidene aromatic hydrocarbon and/or halohydrocarbon or a mixture of such a polymer with another polymer which polymer or mixture contains more than 50% by weight of the hydrocarbon and/or halohydrocarbon, and has uniformly dispersed therein at least 0,5% by weight of an inorganic filler powder and 3-10% of an aliphatic hydrocarbon boiling in the range 10 DEG -100 DEG C. alone or admixed with another organic liquid boiling in the same range. Specified are: fillers:- carbon blacks, clays, limestone, bauxite, ultramarine blue, cadmium yellow, ferrocyanide pigments, carbonate silicate and sulphate of calcium, barium sulphate, iron oxide, alumina, thoria, diatomaceous earth and silica: aliphatic hydrocarbons:-pentane, isopentane, cyclo pentane, heptane and petroleum ethers: polymers:- homopolymers of unsubstituted monovinylidene aromatic hydrocarbons e.g. styrene, or interpolymers with e.g. butadiene, isoprene, acrylic acid, methyl-, ethyl-, and 2-ethylhexyl acrylates and methacrylates, acrylamide, methacrylamide, acrylonitrile, methacrylonitrile, mono- and dialkyl esters of maleic and fumaric acids, vinyl formate, acetate and stearate, ethylene, acenaphthalene, vinyl and vinylidene chlorides, vinyl methyl ether and vinyl butyl ether. The monovinylidene hydrocarbon may be partially replaced by other compounds-a list being given.  The materials become cellular after placing in boiling water.
Patent GB-728757-A (GB)
Title: Centrifuging machines and methods
Inventor: SR ALBERT PELTZER
IPC: B04B1/12
Filed: 1952-06-30
Abstract: 728,757. Centrifugal separators. MERCO CENTRIFUGAL CO. June 30, 1952, No. 16432/52. Class 23. In a centrifugal separator for separating solids from liquid, some of the separated solids discharged from spaced nozzles 41 at the periphery of the bowl 10 are returned to pass through the interior of the bowl isolated from the charge until discharged at the interior periphery at points between the nozzles. Mill starch liquor from an annular passage 63 is fed to.the bowl where it passes through the distributer 28 to the separating chamber 19. The gluten particles are discharged from the bowl over a weir 27 and are collected in a chamber 59. The starch particles discharged from the bowl through the nozzles pass through a constriction 68 into a volute chamber 64. Part of the starch particles from the volute chamber is discharged by a pipe 83 (Fig. 2) and the remainder passes to a return pipe 81 to which washing liquid is supplied by a pipe 82. The return pipe discharges upwardly through an orifice 88 (Fig. 1), controlled by a needle valve 84, to a chamber 89 of the bowl provided with impeller vanes 92. Pipes 93 leading from the chamber 89 discharge the starch particles and washing liquid into an annular compartment 51 communicating with the separating chamber through a slit 104 and having the nozzles mounted on its outer wall. In modifications, the annular compartment is dispensed with so that the pipes discharge directly into the periphery of the separating chamber, and the pipes are formed by passages in castings. The quantity of washing liquid may be adjusted so that it is either discharged with the starch or gluten particles. Two separators, one discharging washing liquid with the gluten and the other discharging washing liquid with the starch, may be arranged in series. Dimensions and performance figures for the separator are given in the Specification. Specification 10314/08, [Class 23], is referred to.
Patent GB-318850-A (GB)
Title: Improvements in or relating to stoppers or covers for jars, bottles or like containers
IPC: B65D39/12
Filed: 1928-06-07
Abstract: 318,850. Keens, H. W. June 7, 1928. Internal fittings.-In a stopper in which a slit conical flange b is expanded into contact with the neck i of a jar &c. by a downward movement of a plug or tray d, the tray may contain absorbent, antiseptic, or aromatic material.