baber/WOPTO huggingface dataset:
Patent GB-1194169-A (GB)
Title: Improvements relating to Umbrellas.
IPC: A45B25/18
Filed: 1968-06-20
Abstract: 1,194,169. Umbrellas. BREMSHEY & CO. 20 June, 1968 [2 Aug., 1967], No. 1035/70 Divided out of 1,192,676. Heading A4P. In an umbrella similar to that described in Specification 1,192,676 the cap 9 is attached to the crown 2 by resiliently engaging two laterally spaced spigots 16 in complementary sockets 17, relative rotation of the cap and crown being thus prevented. The cap is made of a flexible resilient material and each spigot may have two slots 18 (only one shown) offset at 90 degrees to each other to improve their resilience, and a collar 19 which engages under a shoulder 20 in the socket 17. The cap has a chamfered edge 22, forming a skirt which provides a space between the cap and crown to receive any seam at the edge of the canopy (not shown), which is clamped between the cap and crown when they are engaged together. There is an internal groove 23 in the cap to increase the flexibility of the skirt.
Patent GB-163084-A (GB)
Title: Improvements in and relating to collapsible huts, and other collapsible structures
IPC: A63H33/04
Filed: 1920-01-13
Abstract: 163,084. Blascheck, J. Jan. 13, 1920. Folding models.-Relates to toys which can be collapsed without separating the parts thereof. Figs. 6 and 9 show a miniature structure. The base or floor a has hinged thereto the front wall b and rear wall d, the end walls i are hinged to the front wall b and the roof f which may be hinged in the centre is hinged to the rear wall d. A string s may be provided which, on being pulled, erects in succession the end walls, rear wall, front wall, and then draws the roof into position.
Patent GB-1080681-A (GB)
Title: Improvements in presses for extruding metal tubes
IPC: B21C23/21
Filed: 1965-01-11
Abstract: 1,080,681. Extruding; billet piercing. SCHLOEMANN A.G. Jan. 11, 1965 [Jan. 31, 1964], No. 1145/65. Headings B3H and B3P. A metal tube extrusion press has a mandrel 8, Fig. 1 (not shown), mounted on a cross bar 7 displaceable within the main press cross beam 2, the cross bar having laterally extending arms 14 projecting through apertures 6 in the cross beam and co-operating with hydraulically adjustable abutments 19 for limiting the forward stroke of the mandrel. The cross beam 2 carrying the press ram 1 is actuated by a main piston 3 in cylinder 5. Mandrel cross bar 7 is actuated by a piston 9 in cylinder 10 attached to the main cross beam 2 and is retracted by hydraulic units 15, 16. The mandrel 8 may be used for piercing a billet and its forward stroke is limited by abutments 19 on rods 18 carrying pistons 20 in stationary cylinders 21. Pressure liquid from a pump or accumulator may be admitted through pipes 22 to hold the pistons 20 against the inner ends of their cylinders 21 and so keep the mandrel stationary during extrusion. Alternatively a forward movement of the mandrel may be permitted by varying or exhausting the liquid in the cylinders 21 by means of throttle valves. A safety valve is provided in each pipe 22. The inner ends of the cylinders 21 may be provided with adjustable screwed stops 23, Fig. 2 (not shown). In another embodiment, Fig. 3 (not shown), the abutments are formed by columns of liquid trapped in elongated cylinders 27 and cooperating with abutment pistons 26 positively secured to the cross bar arms 14. Outlet valves permit the escape of liquid from cylinder 27. The pistons 26 also serve for retracting the mandrel. In both embodiments the retraction stroke of the mandrel is limited by adjustable stops 13.
Patent GB-534203-A (GB)
Title: A new or improved tool for use in grinding the valves of internal combustion engines
IPC: B24B15/08
Filed: 1940-01-19
Abstract: 534,203. Grinding-in valves. HOLTON, J. S. Jan. 19, 1940, No. 1174. [Class 60] Internal combustion engine valves are ground in by a device comprising a spindle 1 rotatable in a bushed handle 3 and carrying a suction cup 2 for application to the valve head, and a pinion 4 provided with shrouding washers 4a. A rack with a pivotably attached handle 7 is maintained in engagement with the pinion by the shrouds and a wire frame 6. In a modification the rack is maintained in engagement by links loose on the spindle one on either side of the pinion and carrying a roller engaging the rear of the rack. The pinion may be connected'to the spindle by a one-way clutch.
Patent GB-1471262-A (GB)
Title: Virus growth
IPC: A61K39/23
Filed: 1974-03-25
Abstract: 1471262 Growing viruses C VET Ltd 25 March 1974 [9 Jan 1973] 1199/73 Heading C6F [Also in Division A5] Feline panleucopenia or mink enteritis viruses are grown in a nutrient medium comprising a mink tissue cell strain which contains actively dividing cells. The viruses may be inactivated or attenuated by serial passage in the cell strain to produce antigenic material, which may be incorporated in a vaccine. The cell strain may be of lung, kidney or heart of an adult, or preferably, foetal mink. The cells are rendered aseptic and disaggregated mechanically or enzymatically and cultured by serial passages in a nutrient medium until a diploid or heteroploid cell strain free from extraneous viruses, is produced and the cell strain is seeded with the virus either before or after mixing with nutrient medium. Where the nutrient is added after seeding, the culture is maintained at 20-40‹C for 0À5-2 hours before adding nutrient which is added at a rate of 10-50 ml/10<SP>6</SP> viable cells, after which incubation at 30-40‹C is carried out for 5-7 days. Harvesting is achieved by centrifuging to recover extracellular virus followed by treatment to break down all walls and centrifugation to recover all associated viruses.
Patent GB-1138625-A (GB)
Title: Improvements in or relating to disc brakes
IPC: F16D65/097
Filed: 1966-01-11
Abstract: 1,138,625. Disc brakes. DUNLOP CO. Ltd. 11 Jan., 1966 [16 Jan., 1965], No. 1209/66. Heading F2E. In a composite friction element for disc brakes, a friction pad 1 is secured to a rigid backing plate and extending at one side of the backing plate 2 and the other side of the backing plate comprises a single continuous area of vibration damping material 3 for engagement with the brake applying member of the disc brake, the material of the friction element being continuous along any line perpendicular to the plane of the friction element through the vibration damping material. The vibration damping material may be secured in a recess formed in the backing plate. Alternatively, the friction pad material itself may extend through an aperture in the backing plate to form an area of vibration damping material on the other side of the backing plate (Fig. 3, not shown). In an alternative embodiment, (Fig. 4, not shown), the backing plate is formed from two plate members secured together, one plate member carrying the friction pad and the other plate member having an aperture in which the area of vibration damping material is located. Reference has been directed by the Comptroller to Specification 818,077.
Patent GB-203287-A (GB)
Title: Improvements in carburetters for internal combustion engines
IPC: F02M13/06
Filed: 1923-01-13
Abstract: 203,287. Lioud, F. Sept. 4, 1922, [Convention date]. Spray carburettors. - Petrol or other hydrocarbon and water, alcohol, or other liquid are finely divided and mixed with air before being supplied to the engine. Petrol is fed from a float chamber through a conduit d and a gauged nozzle to a tube g carried by a plug f and having a number of small holes o in its wall. The tube g is surrounded by two other tubes i, of which i is carried by the plug f and j by a plug p. The water or other liquid is fed from a second float chamber b through a conduit e to the space between the tubes i, j. The whole of the tubes are surrounded by a baffle tube k which closely fits or is soldered to the tube g, and the interior of which communicates with the atmosphere through calibrated apertures l. The normal level of the fuel and water is shown at x-x. At starting, the nozzle discharges fuel only. As the suction increases, the level in the tubes g, i, falls and air and water are ultimately drawn into the tube g through the holes o and discharged along with the fuel into the main air stream to which supplementary air may be added through duct m.
Patent GB-157345-A (GB)
Title: Method of making screw-spindles with several threads and a screwspindle made after this method
IPC: B23Q5/40
Filed: 1921-01-10
Abstract: 157,345. Salenius, A. G. G. Dec. 28, 1917, [Convention date]. Void [Published under Sect. 91 of the Act]. Screwing. - Screw-spindles with multiple threads are made by consecutively positioning independently prepared screw threads and then securing these to each ether and to a common core. Pins may be used to secure the threads.
Patent GB-442622-A (GB)
Title: Process of producing nickel, capable of being rolled and annealed, directly by electrolysis
IPC: C25C1/08
Filed: 1935-01-14
Abstract: 442,622. Electrodeposition of nickel. FALCONBRIDGE NIKKELVERK AKTIESELSKAP, Kristiansand, Norway. Jan. 14, 1935, No. 1271. Convention date, Jan. 15, 1934. [Class 41] A nickel electrolyte is first freed in a known way from impurities such as arsenic and lead having an injurious effect on the deposit, and from other impurities such as iron which would form slime particles, and is then electrolyzed using impure nickel anodes or insoluble anodes at a temperature of 25-45‹ C., with pH 5À0-6À0 and current density less than 1 amp. per sq. dcm. The nickel deposited is free from berries, capable of being rolled, and retains satisfactory mechanical properties after annealing. Before electrolysis, organic matter may be removed from the bath by addition of an oxidizing agent such as hydrogen peroxide or potassium permanganate or by blowing in air. The initial purification may be carried out by the methods described in Specifications 372,958 and 420,248. The general composition of the electrolyte employed may be NiSO4.7H2O 250 gms., H3BO3 25 gms., Na2SO4 20 gms. per litre. Chlorides equivalent to 10 gms. Cl. per litre may also be present.
Patent GB-684494-A (GB)
Title: Improvements in or relating to airplane hangars and like buildings
IPC: E04H6/44
Filed: 1950-01-18
Abstract: 684,494. Aircraft hangars. WILLIAMS, Sir E. O., and WILLIAMS, O. T. Jan. 17, 1951 [Jan. 18, 1950]. No. 1332/50. Class, 20 (i). Means for increasing the size of an aircraft hangar 12 comprises at least one mobile shell-like structure 10a or 10b of part-spherical form adapted for positioning adjacent an entrance 11 in the hangar 12. The structures 10a, 10b, may be of reinforced concrete or of metal sheet on a steel framework, and are provided with fixed or castoring wheels 17a, 17b, 17c, which may run on rails on the apron area 25 in front of the hangar. The structures 10a, 10b, may be self-propelled, e.g. by an internal combustion engine 26, or they may be towed by e.g. a tractor or by a stationary power source.
Patent GB-1152903-A (GB)
Title: Improvements in or relating to the Prevention or Reduction of Arcing at a.c. Switch Contacts
Inventor: KNOTT LEONARD GEORGE WALTER
IPC: H01H9/54
Filed: 1966-01-11
Abstract: 1,152,903. Arcing-preventing in switches. F. DEVETTA (ELECTRONICS) Ltd. 21 Oct., 1966 [11 Jan., 1966], No. 1343/66. Addition to 1,072,267. Heading H1N. The arrangement of Specification 1,072,267 is modified by connecting the voltage dependent resistor VDR, in series with a further limiting resistance R1, directly across the silicon controlled rectifier SCR between its anode and its gate. The SCR and diode bridge D1, D2, D3, D4 may be replaced by an equivalent " triac " or combination of SCR's, Fig. 3 (not shown). Part W1 of the primary transformer winding may be omitted and an inductance L2 included between the diode bridge and the load, Fig. 2 (not shown).
Patent GB-868265-A (GB)
Title: Electric high-frequency induction heating coil
Inventor: MUNRO WALTER GATE
IPC: H05B6/40
Filed: 1959-01-14
Abstract: 868,265. Induction heating coils. MUNRO & MILLER Ltd. Jan. 11, 1960 [Jan. 14, 1959], No. 1349/59. Class 39(3). A heating coil 4 for use in conjunction with an electric high-frequency generator for heating evenly that portion 1A only of a tubular. object lying on one side of a plane 2 parallel, with or, as shown, containing the neutral axis 3 of the tubular object consists of at least one convolution formed to the general shape of a four-pointed star, the coil being then so bent that it can be considered that at least the portion of the coil exclusive of the tip portions 4B of the rays of the star lies on the surface of an imaginary object and having a configuration geometrically similar to that of the portion to be heated of the tubular object with the tip portions 4B of the rays of the star extending beyond the plane 2. The coil 4 is preferably wound from tubing through which cooling water can be passed.
Patent GB-561319-A (GB)
Title: An improvement in or relating to valves for water mains
IPC: F16K17/32
Filed: 1943-01-27
Abstract: 561,319. Valves. BLAKEBOROUGH, R. A., and KLOUMAN, F. A. Jan. 27, 1943, No. 1358. Addition to 552,268. [Class 135] The chambers e, f of the parent Specification are divided into a mercury compartment i and a compartment for non-toxic buffer liquid, communication between the compartments being controlled by float in the mercury compartment..
Patent GB-588578-A (GB)
Title: Improved manufacture of coated abrasives
IPC: C08L89/00
Filed: 1945-01-17
Abstract: 588,578. Coated abrasives. ABBEY, A. (Behr-Manning Corporation). Jan. 17, 1945, No. 1453. [Class 60] A coated abrasive comprises a reinforcing backing 5 with a layer of abrasive grains 7 attached thereto by at least one coat of adhesive 6 between the backing and the grains, and at least one coat of sizing adhesive 8 applied over the grains, the sizing adhesive being insoluble in a sanding lubricant ; and a further coat 9 which is insoluble in but readily swelled or weakened by the sanding lubricant so that, in use, the coat 9 will disintegrate slowly and so decrease the loading and improve the uniformity of the abrading. The backing may be drill cloth or kraft paper, the abrasive silicon carbide, and the adhesive coats hide glue, or in the case of a waterproof " sandpaper," a phenolformaldehyde resin or an oil-modified alkyd resin modified with an oil-soluble phenolic resin. Examples 1-7 describe a coating 9 for use with a water-type lubricant; such coats comprising hide glue, or casein (dissolved with the aid of ammonia), gum karaya, neutralized sulphonated castor oil and triethanolamine oleate, and they may be applied to the " sandpaper " in aqueous vehicle by means such as coating rolls and may be tanned with formaldehyde, paraformaldehyde, potassium bichromate or hexamethylenetetramine and subsequently dried. Example 8 describes a coat 9 for use with an organic solvent such as a petroleum or cyclic hydrocarbon as lubricant, this coat is formed of rubber and paraffin wax emulsified with aqueous ammonium stearate and caseinate and is used in conjunction with an underlying glue coat.
Patent GB-637585-A (GB)
Title: Process for the manufacture of oleum
IPC: C01B17/76
Filed: 1947-01-16
Abstract: In the catalytic production of sulphuric anhydride, pyrites- or sulphur-burner gases are purified and subjected to liquefaction to remove sulphur dioxide, the liquefied sulphur dioxide so obtained being then vaporized, mixed with the requisite proportion of oxygen and the mixture passed at 450-480 DEG  C. under atmospheric pressure to the catalytic apparatus.  The sulphur dioxide-oxygen mixture is preferably heated in a recuperator of the pyrites furnace, the burner gases being thereby cooled prior to liquefaction.  The gaseous sulphuric anhydride is either directly absorbed in sulphuric acid or is first liquefied or solidified and then absorbed to produce oleum.
Patent GB-855464-A (GB)
Title: Improvements relating to electromagnetic switching relays
IPC: H01H50/40
Filed: 1959-01-15
Abstract: 855,464. Electromagnetic relays. UHER, E. Jan. 15, 1959 [Jan. 21, 1958], No. 1540/59. Addition to 818,577. Class 38 (5). A relay particularly for car lighting dynamo control, as described in the parent Specification, has an additional element, having a temperature-dependent permeability, in the main magnetic circuit in order to provide a constant voltage characteristic over the lower temperature range. The additional element which partially compensates for the external element may be mounted coaxially on the main pole of the relay between it and the armature (Fig. 2, not shown). In an alternative arrangement (Fig. 4) allowing compensation for the reduction in flux in the main circuit on heating, the additional element 36 is offset from the axis of the core 5 toward the armature pivot R. At lower internal temperatures the flux passes between the member 36 and the armature 35 with a lever arm of length 12, but at higher temperatures the flux passes from the core head 9 to an iron plate 41 on the end of the armature with a lever arm of greater length l1.
Patent GB-1109186-A (GB)
Title: Novel vitamin compositions and a process for the manufacture thereof
IPC: A61K9/16
Filed: 1967-01-11
Abstract: A vitamin composition for making vitamin C tablets comprises, by weight, 85 - 95% of ascorbic acid, in the form of unground crystals 18-40% by weight of which are retained by a screen having 200 holes per linear inch, together with 5-15% of a binder which is a modified or pregelatinised starch, a dextrin, or a mixture thereof and which is at least partially soluble in water. The composition may be made into tablets by granulating with water, comminuting and drying, after which a tabletting lubricant such as metallic stearates, saturated fatty acids or a hydrogenated glyceride, is added and the mixture is compressed into tablets.  Other materials, such as titanium dioxide, silicon dioxide and corn starch, may be included with the tabletting lubricant.  The composition is said to provide tablets which, while having a low excipient content, have acceptable physical properties.
Patent GB-542203-A (GB)
Title: A device for filtering liquids
IPC: B01D35/18
Filed: 1941-02-06
Abstract: 542,203. Filters. FOSTER, YATES & THOM, Ltd., and LOUSLEY, N. W. Feb. 6, 1941, No. 1604. [Class 46] Filtrate is discharged by a siphon tube g from the interior of a filter element which has concentric compartments f<SP>1</SP>, f<SP>2</SP> formed of perforated metal or metal gauze and packed respectively with cotton waste and fine cotton wool. In the form of apparatus shown, oil or other liquid is supplied to the container a through a funnel d and rises to the filter element through a perforated plate c. The liquid is heated by a steam coil k. The siphon tube is fitted at the top with a funnel and priming cock (not shown) and with a stop-cock m, and the lower end of the tube, within a receiver h, is turned up to facilitate the discharge of any air entrained in the filtrate. The filter element may have an intermediate compartment packed with siliceous or calcareous material.
Patent GB-1185952-A (GB)
Title: Separation of Epoxy Compounds from Carboxylic acids
IPC: C07D301/32
Filed: 1968-01-12
Abstract: 1,185,952. Separation of epoxy compounds. CELANESE CORP. 12 Jan., 1968 [13 Jan., 1967], No. 1859/68. Heading C2C. An epoxy compound, soluble in water at least to the extent of 75 grams in 100 ml. of water, is separated from a mixture with a carboxylic acid by extraction with two liquids immiscible with each other, one being water and the other an organic solvent for the carboxylic acid. Organic solvents which may be used include mixtures of a hydrocarbon, e.g. pentane, hexane, heptane, benzene, or cyclohexane, or diethyl ether with an acetic acid ester, e.g. ethyl, propyl or isopropyl acetate, or methylethylketone. In an example, glycidal is separated from acetic acid using water and a mixture of heptane and ethyl acetate. Other acids specified are propionic, butyric, benzoic and valeric acids and another epoxy compound specified is 2,3-epoxybutane-l-ol. A glycidol/ acetic acid mixture to be separated may be obtained by the epoxidation of allyl alcohol with peracetic acid or acetaldehyde peracetate.
Patent GB-772664-A (GB)
Title: Improvements relating to padding material for orthopaedic and chiropodial uses
IPC: A61F13/06
Filed: 1954-01-21
Abstract: A padding material for orthopaedic and chiropodial use consists of a layer of felt coated on one side with a layer of expanded rubber which may be porous or non-porous and optionally on the other with a layer of a zinc oxide pressure sensitive adhesive. Coating of the rubber layer may be effected with a vulcanizable foam rubber latex produced as described in Specification 702,335 [Group VIII].  The felt may be of white merino wool and/or of synthetic fibre, e.g. ground nut ("Ardil" Registered Trade Mark), or rayon fibre.  The adhesive coating is protected by layer of gauze before use.
Patent GB-722432-A (GB)
Title: Improvements in or relating to domestic fireplaces
IPC: F24B1/195
Filed: 1952-02-24
Abstract: 722,432. Fire grates. HIGHAM, E. B., WESTBROOK, T. C. L., and STEUERMAN, M. May 22, 1953 [Feb. 24, 1952], No. 2013/52. Class 126 A fire grate comprises a monolithic fire bowl of refractory material adapted to fit into a fireplace and having an aperture in front of the firebowl and a closure to regulate access of air through the aperture. The metal part 3 of the fireplace is provided with lugs 4, Fig. 2, engaging sockets 5 formed in the metal casing 2 within which the refractory firebowl 1 is cast. The back and sides of the fire bowl 1, Fig. 3, slope outwardly in both directions from the level of the grate proper 15. The grate is supported by legs 16 at the back and a member 20 engaging a ledge 19 projecting from the rear of the fireplace front 3. Extensions 17 of the grate project above the front 3 to enable the grate to be agitated. An opening in the grate front is closed by a member 7 provided with toothed quadrants 8, Fig. 4, to hold it in a selected position. A projection 10 at the upper edge of each quadrant co-operates with a sloping surface formed on the fire front 3 and a sloping surface is formed at the bottom of the aperture so that the member 7 is drawn tightly against the fire front in the closed position.
Patent GB-656992-A (GB)
Title: Improvements in bearings
IPC: F16C33/12
Filed: 1949-01-25
Abstract: 656,992. Bearings. METROPOLITANVICKERS ELECTRICAL CO., Ltd. Jan. 25, 1949, No. 2040. Convention date, March 17, 1948. [Class 12 (i)] A bearing bush of hard metal alloy, such as, cemented tungsten carbide, is connected to the inner or outer member of a bearing by an intermediate member which compensates for the difference of thermal expansion of the bush and of the member to which it is fixed. Where a carbide bushing 14, Fig. 1, mates with a steel housing 12 and is fixed to a steel shaft 11, the greater radial expansion of the latter with respect to the bushing is compensated by a sleeve 15 of low coefficient of expansion metal such as invar. In a modification, an invar sleeve 16, Fig. 3, has radial slots 16a, 16b to permit circumferential expansion, radial expansion being compensated by suitably proportioning the radial thickness of the members. In another modification, Fig. 4, the carbide bushing 21 is mounted with radial clearance on a shaft 17 and between conical steel shoulders 19, 20. In another construction, T-shaped carbide bars 23, Fig. 6, are brazed to a steel shaft 24 and are interspaced by a material, e.g. copper, having a high coefficient of expansion. Similar constructions of each embodiment are shown in which the carbide bushing mates with a steel shaft and is secured to a steel housing in association with an intermediate member, e.g. of copper or aluminium, having a high coefficient of expansion. The embodiment of Fig. 6 may be used in conjunction with its equivalent having an expansion compensated hard metal outer bearing bushing.