baber/WOPTO huggingface dataset:
Patent GB-606441-A (GB)
Title: Improvements in or relating to bonded abrasive articles and method of making the same
IPC: B24D3/14
Filed: 1945-10-17
Abstract: An abrasive article, e.g. a grinding wheel, is made by bonding diamond grains in a material comprising one or more alkali metal phosphates, or materials which produce such phosphates on heating, and alumina, or a substance rich in alumina, the bonding material being fused by heat to hold the abrasive grains. Anhydrous sodium phosphate or anhydrous lithium or potassium phosphates, or mixtures thereof, may be mixed with alumina, either amorphous or crystalline, in finely divided form in proportions of from 80-20 per cent phosphates to 20-80 per cent alumina.  The salt in the mixture, when fused with heat, wets the diamonds before reacting with the alumina to produce the bonding compound. A secondary and cheaper abrasive may be added to the mixture, e.g., additional powdered crystalline alumina, artificial corundum, emery, silicon carbide, titanate and mullite.  The tendency of the gases of reaction to distort the abrasive article during its heat treatment is lessened by the low viscosity of the bonding material described above, but the tendency may be still further reduced by reacting a portion of the alkali phosphate and alumina separately, grinding it to powder and then incorporating it with abrasive grains and unfused bonding material into the article to be finally heat treated.  Alternatively the whole of the phosphate and alumina may be fused and ground prior to mixing with abrasive grains and finally fusing.  Sodium carbonate and phosphoric anhydride which react to form sodium phosphate may be used as starting materials.  The powdered mass of bonding materials and abrasive grains is mixed with about 2 per cent of corn dextrine syrup and moulded to the required form.  Firing is at a temperature of about 1450 DEG F. which is produced electrically in a vacuum to prevent oxidation of the diamonds.  The article may be dipped in a heat hardenable resin, preferably under vacuum, to fill the pores. The process may be varied by replacing part of the sodium phosphate and potassium phosphate by magnesium phosphate and calcium phosphate which increases the fusion temperature and bond strength.  Small quantities of boric acid increase the fluidity of the bond, and characteristic colours may be obtained by additions of P2O5 and metallic oxides, or metallic phosphates such as copper phosphate and iron phosphate.  A layer of mixture with secondary abrasive only may be moulded integrally with a layer containing diamond grains.
Patent GB-957647-A (GB)
Title: Improvements relating to azo pigments and their use
IPC: C08K5/23
Filed: 1962-07-16
Abstract: A stoving lacquer comprises a solution of coconut alkyd resin in xylene, melamine resin in butanol, titanium oxide, xylene, ethylene glycol monomethyl ether and a pigment obtained by diazotising 4-chloro -3- aminobenzoic acid -21, 31, 41-trichloranilide and coupling the product with 2-hydroxynaphthalene -3- carboxylic acid -21 methyl -41- methoxy-anilide.  A polyvinyl chloride composition comprises dioctyl phthalate, dibutyl tin dilaurate, a sodium barium salt of an acid phosphoric alkyl ester, titanium oxide and the azo pigment obtained from 4-chloro -3- aminobenzoic acid-21, 41, 51-trichloranilide and 2-hydroxy-naphthalene -3- carboxylic acid -21-naphthylamide.ALSO:The invention comprises azo pigments containing 4 or 5 aromatically bound chlorine atoms in the residue of the diazo component of the general formula <FORM:0957647/C3/1> wherein X1, X2, X3, X4 and X5 independently of each other represent hydrogen or chlorine and Ar represents a possibly substituted radical of the benzene or naphthalene series and a process for the preparation thereof which comprises coupling a diazotized amine of the formula <FORM:0957647/C3/2> with a 2-hydroxynaphthalene-3-carboxylic acid arylamide. Preferably Ar is a benzene series radical and substituents mentioned include lower alkyl, aralkyl, lower alkoxy, phenoxy, fluorine, chlorine, bromine, lower carbalkoxy, N-substituted carbamyl or sulphamyl groups, the trifluoromethyl or nitro group. The pigments are employed in paints, nitro and stoving lacquers, for colouring viscose or cellulose acetate, polyethylene, polystyrene, polyvinyl chloride, rubber and paper pulp.  Examples are furnished of the preparation of the pigments and their use in colouring, stoving lacquer and polyvinyl chloride resin (see Division C3).
Patent GB-444296-A (GB)
Title: Improvements in or relating to carburetters for internal combustion engines
IPC: F02M69/00
Filed: 1935-10-03
Abstract: 444,296. Spray carburetters. FAHA FABRIKATIONS UND HANDELS GES., 171, Argentinische Allee, Zehlendorf, Berlin. Oct. 3, 1935, No. 27303. Convention date, Feb. 8. [Class 7 (iii)] In a floatless carburetter having an air supply through peripheral ports &c. controlled by a rotary slide valve &c., a main fuel inlet is opened progressively by a cam &c. as the slide valve uncovers the air ports and a safety shutoff valve, which normally closes an auxiliary fuel inlet, but is lifted by suction to supply that inlet, cuts of the fuel supply to the main fuel inlet when it is in its normal closed position. A rotary hit-and-miss valve 17 controls air inlet passages 14 arranged tangentially to a mixing chamber 10 to whirl the air helically towards a fuel nozzle 15 directed against the air stream. A spring-pressed conical valve 22 controls the nozzle 15 and is actuated by a tappet 21 engaged by a cam 20 on an arm 19 secured to the valve 17. The valve 22 lies at one end of a chamber 34 to which fuel is admitted through a passage 33 when a slide valve 26 is displaced to the right, the valve first putting a second passage 29 into communication with a passage 28 in the valve. This passage opens into a chamber 31 communicating with the mixing chamber 10 through a passage 32 serving both for idling and for applying suction to operate the valve 26. As this valve opens only on the suction stroke, the fuel tank is isolated in the event of a back fire. A spring-pressed cover 11 prevents damage in the chamber 10 from the same cause. Should the slide valve 26 stick, operation of the cam 20 displaces the conical valve 22 and a pin 35 thereon to open the slide valve. The incoming air and the mixture are heated by jackets 13 through which exhaust gases or cooling liquid flow. In a modification, the valve 26 is set at right angles to the valve conical valve 22. The inlet passages 14 may be replaced by grooves cut in a tubular member 36, Fig. 7, adjustable towards and from the mixing chamber 10 by a rotary movement. The grooves extend into the cover 11 which is hollow to act as a fuel collector. A baffle 43 on the cover 11 directs the air stream to the centre of the chamber 10 when the air passages are opened slightly, but divides it into inner and outer parts when they are opened more widely.
Patent GB-518353-A (GB)
Title: Method of and means for treating or dealing with sludge in sewage sludge digestion tanks
IPC: C02F3/12
Filed: 1938-09-20
Abstract: 518,353. Treating sewage. LETCH, P. A., and BOLTON, J. F. Sept. 20, 1938, No, 27343. [Class 111] Sludge is withdrawn from the bottom of a sludge digestion tank and delivered at the surface through injectorlike devices so that the thick liquid or scum on the surface is broken up and drawn down into the body of the liquid. Fig. 1 shows a circular tank with a central hollow column a<4> and a bridge c moved round the tank on wheels engaging rails on the wall of the central column and of the outer tank, by an electric motor d. The bridge also supports a second motor e<1> driving a pump e, which lifts sludges entering the column a<4> through apertures a<5>, and delivers it to a pipe e<3> on the bridge. The pipe e<3> has branches or nozzles f, each of which discharges the sludge down a bell-mouth pipe g, having its mouth below the surface of the liquid so that scum on the surface is drawn down the pipe. The pipes g are supported from the bridge by a carrier g<1> adjustable relatively to the bridge to allow for variation of the liquid level. Raw sludge for treatment may be supplied through a pipe r to the inlet of the pump and delivered through the nozzles f so that it is thoroughly mixed with liquid undergoing treatment. The method of treatment could be applied in a rectangular tank with bridge &c. moving to-and-fro thereover or with several fixed bridges, each having a series of nozzles.
Patent GB-334712-A (GB)
Title: Improvements in electrically operated apparatus applicable to advertising signs
IPC: G09F13/00
Filed: 1929-09-10
Abstract: 334,712. Powell, V. Sept. 10, 1929. Prisms and like elements, rotating; actuating. -An internally-illuminated colour screen for an advertising sign is mounted on the armature of an electric motor, independently of the armature spindle. The armature consists of coils 12 fixed on the upper face of a horizontal disc carried by a sleeve 8 rotating upon a stationary pointed spindle 7 mounted on a framework 2, 3 enclosing the lamp 19. The screen is preferably built up of glass strips held in annular channels 9<c> in the disc 9 and in a ring 16 supported from the disc n by rods 17. A speed governor is provided comprising brake shoes 23 suspended by rods 20 pivoted to the disc 9 and guided by slotted lugs 22 on the ring 16, the shoes 23 rubbing against a wall 24 when flung out by centrifugal force. Alternatively a fluid brake may be employed. The field coils 14 are fixed on a framework 4, 5. The sleeve 8 carries a cylindrical or disc commutator 10 to which current is conveyed by brusbes 15.
Patent GB-751741-A (GB)
Title: Improvements in or relating to cavity resonators
Inventor: KING LEONARD TONY
IPC: H01J23/20
Filed: 1953-10-07
Abstract: 751,741. Electric resonators. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Sept. 24, 1954 [Oct. 7, 1953], No. 27489/53. Class 40 (8). A cavity resonator is provided with a passage 4 forming a waveguide the cut-off frequency of which lies between the frequency of a desired mode and the next higher frequency undesired mode, to attenuate oscillations of undesired frequency modes. A piece of lossy material 5, e.g. rubber, is provided to assist in such attenuation. In order to keep the physical diameter of the passage small whilst maintaining the electrical diameter sufficiently large a piece of dielectric material 6 of e.g. " Frequentite " (Registered Trade Mark) is provided in the passage. The length of the passage should be at least as long as its diameter. Expressions are given for the lengths of the materials 5 and 6. Specifications 577,037 and 582,262, [Group XXXVIII], are referred to.
Patent GB-616584-A (GB)
Title: Improvements in rafters or like beams
IPC: E04C3/292
Filed: 1946-09-13
Abstract: 616,584. Rafters; beams. DAVIS, F. E., and DAVIS, E. L. Sept. 13, 1946, No. 27523. [Classes 20(ii) and 20(iv)] Rafters or like beams are built up of light metal members 2 and intervening timber 1 of less depth so that the metal members can be clamped together directly and indirectly through the wood at different levels. Flanges 2a which may be flush with the wood may increase the breadth and offsetting of the metal members to form a triangular space increasing the stiffness. The rafters are secured to ridge and wall plates by angle plates.
Patent GB-752054-A (GB)
Title: Mounting for the measuring roller of planimeters or the like
IPC: G01B5/26
Filed: 1954-09-23
Abstract: 752.054. Ball bearings. OTT, H., [trading as OTT, A., [Firm of]]. Sept. 23, 1954 [Sept. 30, 1953], No. 27570/54. Class 12 (1). The measuring roller spindle 6 of a planimeter or similar instrument is mounted in a ballbearing 3, and an annular gap of capillary size is formed between the spindle 6, which has a conical apex 1, and the bearing pin 2 housing the ball bearing 3. The annular gap may be formed between the conical surface of conical apex 1 and a cylindrical wall 8 of the bearing pin 2, Fig. 4. Alternatively the gap may be formed between a cylindrical wall 8 of the bearing pin 2 and a step formed in the apex 1, as shown in Fig. 5. In another modification, the capillary gap is disposed between a radial flange face 12 of the pin 2 and an annular end face 11 of the roller 6, Fig. 6. The space 4 between the capillary gap and the ball bearing 3 is filled with grease.
Patent GB-1137446-A (GB)
Title: Novel disulphonamides and their production
Inventor: HORSTMANN HARALD
IPC: C07D307/33
Filed: 1967-06-15
Abstract: 1,137,446. Disulphonamides. FARBENFABRIKEN BAYER A.G. 15 June, 1967 [16 June, 1966], No. 27708/67. Heading C2C. Novel disulphonamides (and salts thereof) of the general formula and the corresponding compounds arising from opening of the lactone ring, i.e. of the formula wherein R is hydrogen or methyl, R<SP>1</SP> and R<SP>11</SP> are hydrogen or C 1-4  alkyl and n is 0 or 1, are prepared (a) by reacting 4-chloro-3-sulphonamido - benzene sulphochloride either with the appropriate aminoalkyl - lactone (or salt thereof) or with an aminoalkyl-hydroxy-carboxylic acid (or ester or salt thereof) and in the latter case cyclizing the resulting open-ring compound (corresponding to the compound illustrated above) to the lactone by heating and/or acidifying; or (b) by treating the corresponding tetrahydrofuran or tetrahydropyran with oxidizing agents. Dextro - rotatory 2 - methyl - 2 - methylaminomethyl - tetrahydrofuran is obtained from the racemic mixture by resolution using (d)( - )- tartaric acid (the hydrochloride of the dextro form is also described). α - Aminomethyl - α - methyl - butyrolactone acetate is obtained by catalytic hydrogenation of the corresponding nitrile in glacial acetic acid. γ - Hydroxy - γ - aminomethyl - valeric acid ethyl ester acetate (formed by hydrogenation of the corresponding cyano compound) treated with benzaldehyde and dimethyl sulphate followed by hydrochloric acid yields α-methyl-α- methylaminomethyl - butyrolactone (isolated as the hydrochloride). Chloro - 2 - sulphamoyl - 4 - [N - methyl - N - (2- methyl - tetrahydrofurfuryl)]- sulphamoyl - benzene is prepared by the interaction of 4-chloro-3- sulphonamido - benzene sulphochloride and 2 - methyl - 2 - methylaminomethyl - tetrahydrofuran. Pharmaceutical preparations effective against edema and hypertension contain as active ingredient the above novel compounds and administration is parenterally.
Patent GB-869938-A (GB)
Title: High-frequency electrical welding
IPC: B23K13/02
Filed: 1958-08-29
Abstract: 869,938. Heating metal by induction and passage of current. MAGNETIC HEATING CORPORATION. Aug. 29, 1958 [Aug. 29, 1957], No. 27886/58. Class 39(3). [Also in Group XXII] In welding together the opposed edges of elongated metal portions advanced past a welding point, the edges are preheated by an inductor 14 Fig., 2 as disclosed in Specification 772,398 and current of at least 100 kilocycles per second supplied to the portions by fluidcooled contacts 25, 26 returns via a fluidcooled conductor 31 extending above the edges. The current is concentrated by magnetic members 35 or 36. An alternative form of coil comprises an upper turn 40, 41 Fig. 3 above the portions and a lower turn 42, 43 below the portions. Specifications 748,528, 851,528, 851,530, 869,336 and 869,337 also are referred to.
Patent GB-1510635-A (GB)
Title: Packaging
IPC: B65D5/02
Filed: 1974-06-24
Abstract: 1510635 Liquid pack UNILEVER Ltd 24 June 1975 [24 June 1974] 27935/74 Heading B8P A pack for containing liquids is formed from a one piece blank provided with a liquidproof lining; is of substantially conical shape with a polygonal, e.g. rectangular, base formed by a plurality of overlapping flaps 6 provided by the blank; may be filled via its base prior to closure thereof, and after filling of the pack the base flaps are closed and sealed in association with the lining which may be formed by a separate film of plastics material 4 which is attached to the blank, or by a wax coating present on the inner surface of the blank. The pack shown is inverted for filling; thereafter the lining 4 is sealed (Fig. 10, not shown) and the flups 6 closed and sealed.
Patent GB-868127-A (GB)
Title: Improvements in fire-extinguishing apparatus
Inventor: KIMBER KENNETH GEORGE
IPC: A62C13/00
Filed: 1957-09-04
Abstract: 868,127. Valves. PYRENE CO. Ltd. Sept. 3, 1958 [Sept. 4, 1957], No. 27939/57. Class 135. [Also in Group XXI] Non-return valves mounted on a tube 2 through which a gas is introduced into a container for expelling a fire extinguishing powder from the container comprise annular members 7 brazed to the tube and formed with inwardly converging peripheral grooves 9 the bottoms of which communicate through passages 6, 10 with the interior of the tube. A resilient 0-ring 11 is situated in the groove 9 of each annular member, normally making contact with the side walls of the groove. The lower annular member has a wall 13 for closing the end of the tube 1.
Patent GB-242655-A (GB)
Title: Improvements in plansifters
IPC: B07B1/52
Filed: 1925-11-06
Abstract: 242,655. Mertz, L., and Mertz, C. Nov. 6, 1925. Sieves with compound motion. - Plansifters comprise a plurality of sieves of different mesh arranged over a common bottom, each sieve being provided with a brush apparatus which is adjustable relatively to it. The brush apparatus consists of a frame mounted on two. cross members 16<1>, Fig. 6, and comprising an inner grooved rail 12, an outer rail 11 with ends 15 curved concentrically about the ends of the rail 12, and an intermediate ratchet rack 10. The brush 5 has rollers 13, 14 engaging the groove of the rail 12 and the inside of the rail 11, a guide member 16 engaging the outside of the rail 12 and a pivoted pawl 9 engaging the rack 10, whereby progressive movement is imparted to the brush by the circular movement of the sifter. The cross members 16<1> are carried in oblique slots in a frame which is adjusted longitudinally relatively to the brush frame so as to regulate the pressure of the brush on the sieve. Fig. 1 shows two arrangements of the sieves. As shown on the left-hand side of this Figure, the sieves are arranged in two superposed groups, each comprising two coarse sieves 1, a finer sieve 2, and a tray 3. Below the two groups are two independent fine sieves 2, the lower of which is partially covered by a deflecting plate. 6. The arrangement shown on the right-hand side, comprises one group of sieves of different mesh and a succession of three independent sieves of fine mesh. Apertures may be provided in the sieves for the removal by an aspirating air current of light extraneous particles.
Patent GB-674618-A (GB)
Title: Improvements in file bodies
IPC: B23D71/00
Filed: 1950-11-15
Abstract: 674,618. Rotary files. KERN, J. Nov. 15, 1950 [Dec. 7, 1949], No. 27971/50. Class 83 (iii). A file body 1 comprises a piece of steel tube provided with file grooves, a steel disc 3 pressed against a shoulder 4, and a conical seat 5. The file is clamped against a keyed driving member 8 by a conical nut 9, the disc 3 ensuring that the file is coaxial with the shaft 7.
Patent GB-1308840-A (GB)
Title: Sugar coating apparatuses
IPC: A23G3/26
Filed: 1971-06-15
Abstract: 1308840 Coating particulate material F E ERIKSEN 15 June 1971 [22 June 1970] 28002/ 71 Heading B2L Apparatus for coating tablets comprises a drum 1 journalled for rotation about a horizontal axis and having a plurality of partition walls 25a, 25b movable therethrough from an inlet end of the drum to an outlet end to divide the drum into a number of chambers and means for supplying coating material e.g. sugar to the drum. The partitions are supported on guide rods 23 and are moved by catches 34 on chains 28a, 28b &c. Each chain passes over a pair of pulleys of equal diameter but the diameters of the pairs of pulleys increase along the drum so that each chain moves faster than the previous one. Partitions leave the drum at the exit end and can be fed back in again. Means are provided for spraying the articles with sugar solution and dyestuffs. Means are also provided for feeding in and extracting air from the drum. Any sugar particles in the extracted air are removed and returned to the supply by means of a cyclone.
Patent GB-809620-A (GB)
Title: Improvements in or relating to heat exchangers
IPC: F28D7/10
Filed: 1956-09-14
Abstract: 809,620. Heat exchangers. MODINE MANUFACTURING CO. Sept. 14, 1956 [Oct. 17, 1955], No. 28127/56. Class 64(3) A heat exchanger adapted to be mounted in a duct 2 so that fluid flowing through the duct passes through and around the heat exchanger comprises an annular passage 5 closed at each end and defined by two co-operating tubular members 3, 4, a turbulator member engaging the walls of the tubular members being disposed in the passage 5 and comprising sheet material slit and corrugated in the manner shown in Fig. 3 to provide a plurality of U-shaped fins, the heat exchanger being supported in the duct 2 by means such as connectors 13 serving also to connect the heat exchanger to a fluid line. In the form shown oil is passed through the passage 5 of the heat exchanger and is cooled by water flowing through the duct 2 which may be made of rigid, flexible, metallic or non-metallic material. Fig. 1 shows two alternative methods of closing the ends of the passage 5. The turbulator member may be made in two parts, e.g. 16a, 16b (Fig. 2) and may be mounted either with the fin portions 19 (Fig. 3) facing the direction of fluid flow through the passage 5 or alternatively with the edges 17a of the fins facing the direction of flow. A further form is described (Fig. 4, not shown) in which the heat exchanger comprises two annular passages one within the other connected either in series or in parallel.
Patent GB-464402-A (GB)
Title: Improvements in window-stays and the like
IPC: E05C17/30
Filed: 1935-10-11
Abstract: 464,402. Stays. NAAMLOOZE VENNOOTSCHAP IJZERHANDEL I. M. DE VRIES, and VRIES, A. DE. Oct. 11, 1935, No. 28130. [Class 65 (i)] A telescopic stay for windows and the like comprises a sleeve 23 pivotally mounted on one member, e.g. the frame, a tube 16 slidable and rotatable in the sleeve 23, and a rod 10 pivoted to a bracket 12 on the other member, e.g. the sash, the tube 16 having a plurality of internal teeth 18 and external teeth 21 for engagement respectively with a series of external teeth 13 on the rod 10 and internal teeth 24 on the sleeve 23. The tube 16 is provided with a handle 27 whereby it can be rotated on its axis to free the respective sets of teeth or to engage them to lock the members in any longitudinal relative position. The teeth may be formed by an interrupted screw-thread having a separate member applied to form the closed ends of the tooth gaps. Relative movement of the parts may be limited by a flange on the tube 16 engaging the sleeve 23 and a head on the rod 10 engaging an internal flange on the tube 16. Specification 449,048 is referred to.
Patent GB-1071707-A (GB)
Title: An apparatus for feeding and distributing material to storage containers,such as silos
IPC: A01F25/18
Filed: 1965-07-02
Abstract: 1,071,707. Distributing fodder in silos; pneumatic conveyers. ALFA-LAVAL A.B. July 2, 1965 [July 3, 1964], No. 28223/65. Headings B8A and B8E. Fodder to be fed into a silo is conveyed by an air conveyer and dropped into hopper 20 of pipe 4 positioned in the top of the silo. The fodder in pipe 4 is stirred by agitators 13 and entrained in the air pressure generated by fan 14 so as to be distributed over the top of the silo, the distribution being assisted by rotating disc 12. Disc 15 is driven via shaft 12 from motor 10; and fan 14 and agitators 13 are driven therefrom via hollow shaft 11. Pipe 4 is adjustably mounted on framework 17, and disc 15 is axially adjustable relative to fan 14. Shaft 11 may carry cutter blades, and disc 15 may be frictionally driven.
Patent GB-188315-A (GB)
Title: A tie-holder
IPC: A47F7/12
Filed: 1922-10-17
Abstract: 188,315. Henriot, G. Nov. 2, 1921, [Convention date]. Displaying ties.- A holder for displaying a bundle of ties for sale comprises a yoke a, b on the cross-bar b of which is mounted a belt d of leather or fabric. The belt d is in two parts passed through resilient rings c on the cross-bar b, and secured by press-buttons e, the two parts being connected by a buckle f. A gripping member h is passed through one of the rings c.