baber/WOPTO huggingface dataset:
Patent GB-933463-A (GB)
Title: Manufacture of polytetrafluoroethylene covered flexible elongated bodies
IPC: B29C63/00
Filed: 1959-09-15
Abstract: 933,463. Coated polytetrafluoroethylene tape. TENSOLITE INSULATED WIRE CO. Inc. Sept. 15, 1959 [Sept. 18, 1958], No. 31494/59. Drawings to Specification. Class 140. [Also in Groups XXV and XXXVI] A polytetrafluoroethylene sintered tape is coated, prior to being lapped on to an electrical conductor (see Group XXVI), with a dispersion containing finely-divided, uncured polytetrafluoroethylene resin and polyisobutylene. The coating apparatus includes a pay-off spool, an inking device, an oven and a take-up spool of conventional type, the tape being drawn over an inking roller, which applies the dispersion, and then through the oven which dries it at a temperature below the curing temperature of the uncured P.T.F.E. Examples of suitable aqueous dispersions with and without coloured pigment are given together with details of apparatus, speed, tension and temperature to produce a coating of 0.0002 to 0.0018 inch on a half inch wide tape of 0.0025 inch thickness. U.S.A. Specification 2,335,191 is referred to.
Patent GB-208560-A (GB)
Title: Improvements in condenser plants for locomotives or the like
IPC: F28B7/00
Filed: 1923-12-15
Abstract: 208,560. Aktiebolaget Ljungstr÷ms Angturbin. Dec. 16, 1922, [Convention date]. Cooling condensers, air blast and deflectors for. -In a condenser for locomotives of the type in which air is drawn by fans over tubular cooling- elements arranged on either side of a liquid receptacle the fans are placed above the receptacle and cooling-elements. The invention is applicable both to condensers in which the steam is condensed in the liquid-receptacle and the water is recooled in the cooling elements and to those in which the steam is condensed in the cooling elements. Fig. 3 shows both arrangements. In that shown in the righthand half the water is forced through a strainer 41 and pipes 40 to distributing pipes 37 and thence through the cooling-elements 32 to collecting pipes 35<a>, and is returned to the receptacle 30 through pipes 42 communicating with stand-pipes mounted on the receptacle, in which it is distributed by a strainer 43. In the arrangement shown on the left-hand side the steam passes to a collecting pipe 36 in the receptacle 30 and through the cooling-elements 33 to the collectors 35, the condensate being returned to the receptacle 30 through the pipes 44 and the stand pipe. The fans 31, which may be mounted on the stand pipes, or on some of them, draw air over the elements 32, 33 as indicated by the arrows 34. Plates may be arranged above the receptacle 30 so as to screen corners and thus diminish the resistance to the air-current. The pipes 42, 44 may be flattened so as to reduce the resistance to the air. This is especially desirable when the fans are mounted on the stand-pipes, so that the pipes 42, 44 are opposite the centres of the fans. When the fans are between the stand-pipes, as shown in plan in Fig. 10, the flattening is less necessary. The condenser may be placed on the same car as the turbine driving the locomotive, the boiler, cab, and coal bunker being on another car.
Patent GB-869019-A (GB)
Title: Improvements relating to the knife-edge bearings for weighing machines
IPC: F16C32/02
Filed: 1957-10-10
Abstract: 869,019. Knife-edge bearings. WHITE & SON, J. Oct. 13, 1958 [Oct. 10, 1957], No. 31667/57. Class 12 (1). Amounting for the knife elements 7, 18 in a swinging member 5 of a weighing-machine comprises an angularly-adjustable split sleeve 8 having an eccentric cylindrical bore 14 in which a cylindrical portion of the knife elements is located. The sleeve 8 has a tapered outer surface which is forced into a correspondinglytapered aperture in the member 5. Angular adjustment of the sleeve 8 effects height adjustment of the knife elements. Recesses 11, 12 are provided to facilitate angular adjustment of the sleeve 8. A similar arrangement is provided for adjacent knife edges 15, 16.
Patent GB-618140-A (GB)
Title: Improvements in and relating to the power transmission to helicopter rotors
IPC: B64C27/12
Filed: 1946-10-25
Abstract: 618,140. Helicopter rotor drive. CIERVA AUTOGIRO CO., Ltd., PULLIN, C. G., and WATSON, K. Oct. 25, 1946, No. 31694. [Class 4] The power unit of a helicopter drives two coaxial shafts 20 and 21, supported by a rigid pillar 2 and pylon 1, through a differential gear 23, 24, 25, 26 ; a clutch 28 being interposed between the differential gear and the outer shaft 21. The coaxial shafts carry bevel pinions 18 and 19 meshing respectively with bevel wheels 16 and 17 mounted on shafts 12 and 13 rotatable in coaxial trunnion bearings 4 integral with the top of rigid pillar 2. A non- rotatable hub supporting member 6 is pivoted on the outside of trunnions 4 and has journalled on it a crown wheel 10 meshing at diametrically opposite points with bevel pinions 14 and 15. Crown wheel 10 drives, through a free-wheel coupling 11, the rotor hub 8. The coaxial shafts 20 and 21 are normally driven at equal speed in the same sense, thereby rotating the hub 8 through shafts 13 and 14, crown wheel 10 and coupling 11, but the gear 23, 24, 25, 26 permits the differential rotation necessary if the hub 8, supporting member 6 and crown wheel 10 are tilted on the trunnions 4, and disengagement of clutch 28 renders the rotor and engine shaft independent of one another.
Patent GB-439443-A (GB)
Title: Improvements in or relating to absorption refrigerating apparatus
IPC: F25B15/10
Filed: 1934-11-05
Abstract: 439,443. Refrigerating. HOOVER, Ltd., Perivale, Middlesex.-(Hoover Co. ; North Canton, Ohio, U.S.A.) Nov. 5, 1934, No. 31757. [Class 29] Absorption machines and systems.-Rectification of the vapour passing from the generator to the condenser of a continuous-cycle system is effected by condensed refrigerant brought into intimate contact with the vapour. The rectifier may comprise headers F<1>, F<2> connected by tubes the upper parts of which are surrounded by a casing c<2> which communicates through pipes c<1>, E<4> with the condenser C and the evaporator E respectively, and by a valved-pipe J<1> with an auxiliary condenser J the condensate from which is distributed to the rectifier tubes. The vapour evolved in the generator B separates in the chamber D and passes through the pipe D<2> to the header F<2> and up the tubes to the header F<1> and the condenser C. Weak liquor flows through the pipe B<6> to the absorber A from which the strong liquor passes by the pipe A<2> to the header F<2> and thence through the pipe B<5> to the generator. An inert gas circulates between the absorber and the evaporator. In a modification, the casing C<2> is dispensed with and the header F<1>, Fig. 2, is provided with auxiliary condensers J. In another arrangement, operating without inert gas, rectification is effected in a column F, Fig. 4, by condensate supplied to the column through a valved-pipe M<2> communicating with a reservoir M connected to the condenser C. A pump K returns the strong liquor from the absorber A to the column. In a further modification, rectification is effected in a column having an auxiliary condenser projecting laterally therefrom as described in Specification 439,442.
Patent GB-660770-A (GB)
Title: Improvements in and relating to electric transformers
IPC: H01F38/30
Filed: 1949-12-12
Abstract: 660,770. Transformers. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 12, 1949 [Dec. 22, 1948], No. 31849/49. Class 38 (ii). A transformer with high and low voltage windings 6, 16 enclosed in a casing 1 has a metallic shell 8 or 17 bf smooth external surface surrounding each winding and electrically connected thereto, each shell having a gap 9 or 18 to prevent it acting as a short-circuited turn, the shells being interlinked and physically separated from each other, and a liquid dielectric 22 in the casing, of dielectric constant at least 4 at 25‹ C., such that the liquid surrounds the shells and forms the sole insulation in the space between the interlinked surfaces of the shells. The neck of the shield 8 which passes through the insulating bushing 3 is oval to ensure its rigidity under electromagnetic stresses. The liquid dielectric comprises certain askarels such as chlorinated diphenyl. Specifications 430,121, [Group XXXVI], and 394,776 are referred to.
Patent GB-345315-A (GB)
Title: Spark device for internal combustion engines
IPC: F02P17/00
Filed: 1929-10-21
Abstract: 345,315. Ignition. NUDL, L., 20, Bent Street, Northcote, Victoria, and NUDL'S PATENTS PROPRIETARY, Ltd., 422, Collins Street, Melbourne, both in Australia. Oct. 21, 1929, No. 31869. [Class 7 (iv).] One or a pair of adjustable gaps 8, 11 are placed in series with the sparking-plugs. One electrode of each gap may be pointed and the other flat. A number of such pairs of gaps may be enclosed in a casing, each pair within a glass tube. Opposing terminals are of different materials. The terminal pins 6, 13 are made of mild steel; the sleeves 3 consist of an outer iron annulus and an inner annulus of an alloy comprising zinc 75 per cent, tin 15 per cent, phosphor tin 5 per cent, and aluminium 5 per cent. The electrode 2 consists of copper and tin in the proportions 9: 1. Electrode 7 and the nuts 18 are of Delta metal, and the third electrode 9 of copper, tin and aluminium in the proportions 75: 15: 10. Sleeve 12 consists of an outer iron annuius and an inner ring of an alloy of copper, tin and aluminium in the proportions 75: 15: 10.
Patent GB-1239835-A (GB)
Title: A method of regulating voltage and eliminating short-circuits in cells for the electrolysis of alkali metal chlorides
IPC: G05D3/12
Filed: 1968-07-04
Abstract: 1,239,835. Electrolysis of alkali metal chlorides. FARBENFABRIKEN BAYER A. G. July 4, 1968 [July 4, 1967], No.31874/68. Heading C7B. [Also in Division G3] The voltage of a cell for the electrolysis of alkali metal chlorides is regulated by an electrodepositioning control system utilizing a reference signal which is automatically adjusted to take account of changes in the electrolysing current, the signal having a fixed component and a currentdependent component. As shown, a reference voltage Us is produced by adding a fixed voltage Uo, derived from a source 3, to a currentdependent voltage UI derived by way of an amplifier 2 from the conductor rail 1 feeding a plurality of electrolytic cells 6; for each cell, the cell voltage UZi is applied over an amplifier 7 and an individual adjustment potentio-meter 8 to a comparator 9 for comparison with the reference signal Us, and the resulting error signal controls an electrode-positioning drive 10. Thus the electrodes of each cell are moved up or down as required to regulate the cell voltage, and if a short-circuit should occur in a particular cell this is automatically eliminated. The reference voltage may be derived from an A. C. source Fig. 2 (not shown); and the system may include magnetic amplifiers as control elements Fig. 3 (not shown).
Patent GB-496839-A (GB)
Title: Improvements in or relating to thermionic valves
IPC: H01J21/14
Filed: 1937-11-19
Abstract: 496,839. Electron beam valves. M-O VALVE CO., Ltd., and WARREN, G. W. Nov. 19, 1937, No. 31876. [Class 39 (i)] In. a thermionic valve in which one or more beams of electrons from the cathode pass through a control grid and accelerating electrode to an aperture in a hollow anode or anodes as described in Specification 403,973, the electrodes are constructed and arranged so that the beam converges to a minimum cross section approximately in the plane of the anode aperture. Fig. 1 shows a valve which emits two electron beams comprising an indirectly heated cathode 1, control grid 2 accelerating screen electrode 4, and hollow anodes 5. A sheet metal auxiliary electrode 3 maintained at a constant (preferably cathode) potential converges the electron beam to a minimum cross section in the plane of the anode aperture. In Fig. 3 (not shown), the screen electrode is also of sheet metal and in Fig. 4 (not shown) the beam is converged by making the surfaces of the cathode, control electrode, and screen concave towards the anode. In Fig. 2, the two parts of the anode are combined into a single unit in the form of a cylinder with inwardly projecting fins 5. This form of anode is easily degassed by eddy currents.
Patent GB-308670-A (GB)
Title: Improvements in and connected with elastic fluid compressors
IPC: F04B39/06
Filed: 1927-11-26
Abstract: 308,670. Eyston, G. E. T. Nov. 26, 1927. Pistons.-Fig. 2 shows a radial cylinder compressor having pistons wedge-shaped at their inner portions, the ends being shaped to fit an air cooling device q in the common central compression space. Fig. 5 shows a compressor piston formed with recesses 16 fitting over fins 14 on an annular cooling device surrounding a rotary valve.
Patent GB-744607-A (GB)
Title: Frequency modulation relaxation oscillator
IPC: H03K4/12
Filed: 1952-12-16
Abstract: 744,607. Frequency and pulse modulation. MINISTER OF NATIONAL DEFENCE OF CANADA. Dec. 16, 1952 [July 10, 1952], No. 31880/52. Class 40 (5). In a relaxation oscillator in which a capacitor is charged from a D.C. source and intermittently discharged when the potential across the capacitor reaches a predetermined value, the potential supplying the charging current to the capacitor or the bias on the discharging device is modulated in frequency. As the potential across capacitor 13 rises, Fig. 1, due to charging from source 11 over resistor 12, a point is reached when the tube 22, biased by battery 27, is caused to conduct. The resulting negative-going pulse at the anode is fed over the differentiating network 29 to cathode follower 19 causing the diode 14 to conduct and discharge capacitor 13, the inductor 17 assisting in the process. A modulating voltage, applied over transformer 100, causes frequency modulation of the pulses, Fig. 3 (not shown). Alternatively the modulation voltage may be applied over transformer 101, Fig. 4 (not shown). In a modification, Fig. 2 (not shown), the valve 22 is replaced by a cathode-coupled flip-flop, the output from the differentiating circuit being applied to the cathode follower over a phase-reversing stage. In a further modification, Fig. 9 (not shown), the positive pulse from the differentiating circuit is applied to a triode, causing it to conduct and discharge the capacitor 13.
Patent GB-538678-A (GB)
Title: Improvements in or relating to heat exchange systems
IPC: F01M5/00
Filed: 1939-12-11
Abstract: 538,678. Radiators for aircraft engines &c. CLARKE ENGINEERING CO., Ltd., H. B., and DANIELSON, P. J. Dec. 11, 1939, No. 31996. [Class 64 (iii)] In an oil-cooling system for internal combustion engines, the oil pressure at starting opens a spring-pressed lift valve 15 on the inlet chainber 10 to allow the oil to return through a pipe 51 to the oil tank, and at the same time maintains a sliding sleeve valve 20, controlling the oil flow to a cooler through a pipe 52; on its seating 24. Oil enters the sleeve valve through an opening 27 and a small quantity leaks continuously through capillary passages 35 and ducts 37 into the return pipe 51. The resistance to flow through the passages becomes less as the viscosity of the oil falls, and the consequent decrease of pressure in the valve allows it to open against the action of a spring 23. The oil pressure so acts on the piston 39 of a servomotor operating the shutters of the cooler that as the pressure falls, the shutters are opened to increase the flow of cooling air. Specification 432,048, [Group XXXIV], is referred to.
Patent GB-1432773-A (GB)
Title: Netting
IPC: D04H3/045
Filed: 1972-07-07
Abstract: 1432773 Moulding nets A BRAMLEY 25 June 1973 [7 July 1972] 32024/72 Heading B5A [Also in Division D1] Netting is made by moulding thermoplastics material about the intersections of longitudinal and transverse threads of thermoplastics material cross-linked by irradiation, e.g. by high energy electrons. The irradiation of the threads, which may be extruded polyethylene, improves the bond to the moulded material and also enables the material to be injection moulded at higher temperatures. Specifications 1,321,229 and 1,110,793 are referred to.
Patent GB-1135098-A (GB)
Title: Method for preparation of urania sols
IPC: C01G43/025
Filed: 1966-07-18
Abstract: 1,135,098. Stable urania sol. UNITED STATES ATOMIC ENERGY COMMISSION. 18 July, 1966 [12 Oct., 1965], No. 32114/66. Heading C1A. A stable urania sol is prepared by precipitating hydrous urania from an aqueous uranou nitrate solution by adding an alkaline reagent, to a final pH of 6À0-7À3, separating, washing and heating the precipitated hydrous urania at 60-80‹ C., all under a non-oxidizing atmosphere. The uranous (tetravalent uranium) solution may be supplied as an organic salt such as uranous formate or by reduction of hexavalent uranium in solution, such as uranyl nitrate solution obtained in solvent extraction reprocessing of spent nuclear reactor fuels, by hydrogen with a platinum catalyst, such as 0.001 molar chloroplatinic acid, and in the presence of a nitrite-inhibiting agent such as 0À25-0À3 molar urea. The solution should have about 0.5 molar tetravalent uranium concentration and a nitrate to uranium ratio of 4 to 1. The alkaline reagent may be any strong base, especially ammonium hydroxide, and the atmosphere may be an inert gas. The sols may be used alone or mixed with other actinide sols to prepare nuclear reactor fuels.
Patent GB-854284-A (GB)
Title: Airtight impermeable flexible tubes
Inventor: TAPP JAMES STEWART
IPC: A61F2/06
Filed: 1956-10-22
Abstract: 854,284. Flexible pipes. CHEMSTRAND CORPORATION. Oct. 22, 1956, No. 32137/56. Addition to 829,943. Drawings to Specification. Class 99(2). A braided crimped nylon tube formed as described in the parent Specification is coated with a natural or synthetic rubber latex or a synthetic resin, such as polyethylene or vinylchloride acrylonitrile copolymer, to render it impermeable.
Patent GB-1337526-A (GB)
Title: Phosphonate esters
IPC: C07F9/40
Filed: 1972-07-10
Abstract: 1337526 Halogen-containing phosphonate esters PECHINEY UGINE KUHLMANN 10 July 1972 [15 July 1971] 32138/72 Heading C2P Novel esters of the general formula in whieh R 1  and R 2  are the same or different and are C 2 -C 4  alkyl radicals substituted on the 2- position by at least one Br or Cl atom are obtained by either (a) reacting CH 3 OCH 2 Cl with a tri(haloalkyl)phosphite P(OR 1 )(OR 2 )(OR 3 ) in which R 3  which may be the same as or different from R 1  and R 2  is as defined for R 1  and R 2  or (b) by condensing CH 3 OCH 2 Cl with an alkali metal salt of the corresponding secondary phosphite. Examples are given using method (a) above and the crude products obtained before purification by distillation under reduced pressure contain a small amount of the bis-(2- haloalkyl)-2-haloalkyl phosonphate formed by rearrangement of the trihaloalkyl phosphite used as starting material. The products are useful as fireproofing agents and in the treatement of plant diseases. The tri(haloalkyl)phosphite starting materials for method (a) may be obtained by reacting a 1,2 alkylene oxide, e.g. ethylene oxide or propylene oxide, or mixture thereof, or epichlorhydrin with PCl 3  or PBr 3 , or mixture thereof, and examples are given for the preparation of various single and mixed tri(haloalkyl)phosphites.
Patent GB-219240-A (GB)
Title: Improvements in washers for washing gravel, sand, or other similar material
IPC: B03B5/56
Filed: 1923-12-22
Abstract: 219,240. Southall, J. Dec. 22, 1923. Rotary washing-apparatus.-In a washer of the kind comprising a revolving cylinder provided internally with a projecting member of gradually increasing height from one end of the cylinder to the other, the projecting member increases in height from the end at which the water is discharged to the end at which the washed material is discharged. In the form shown, a continuous helical member b is provided, the water being discharged at f and the washed material at e ; or the member b may be of the form described in Specification 210,635.
Patent GB-386086-A (GB)
Title: Improvements in electric fuses
IPC: H01H85/38
Filed: 1931-11-20
Abstract: 386,086. Fusible cut-outs. CRABTREE, J. A., Endwood, Little Aston Park, Sutton Coldfield. Nov. 20, 1931, No. 32170. [Class 38 (i).] A fuse wire e passes through a longitudinal tunnel d in a depending rib a1 on the carrier a, the ends of the tunnel being closed by pads c, c<1> of asbestos &c. fixed in a well b<1> in the base b. The tunnel d may be lined with asbestos, plaster-of-paris or other gas-absorbing material.
Patent GB-1067389-A (GB)
Title: Thin laminated gasket
IPC: F16J15/12
Filed: 1965-07-28
Abstract: 1,067,389. Joint-making packing. FELT PRODUCTS MFG. CO. July 28, 1965 [July 28, 1964; May 17, 1965]. No. 32244/65. Heading F2B. A compressible gasket for sealing the cylinder bore of an I.C. engine comprises two outer metal sheets and filler means sandwiched therebetween, the filler means consisting of not more than two layers of material, at least one being a layer of fibres impregnated with a binder, one of the metal sheets being bent around the edges of the filler means to the extent that at least when the gasket is compressed the bent portions are flush with the other metal sheet. The gasket shown comprises steel sheets 12 and 13 and two sheets 14 and 15 of non-woven cotton fibres. Alternatively, the sheets 14 and 15 may be woven or non-woven and made of natural fibres, other than cotton, such as flax, or synthetic fibres, such as nylon. Each filler sheet is formed by impregnating a layer of fibres with a thermosetting resin and curing the resin. The total thickness of the gasket is less than 0.030 inch and the filler sheets have a total thickness of 0.015 inch. Each filler sheet is approximately 0.001 inch thicker than each metal sheet. The edge of the sheet 12 is rolled over to overlie the edge of the sheet 13. The gasket is coated with a thermosetting resin. In a modification, the filler sheets are replaced by a sheet of asbestos fibres and a metal shim. In a further modification, a single filler sheet consisting of a layer of fibres impregnated with a binder is sandwiched between two metal sheets. The filler sheet has further apertures and one or both metal sheets are indented in the area of the apertures to provide metal-tometal contact and where the metal sheets are in such contact they are permanently secured together, e.g. by welding.
Patent GB-209257-A (GB)
Title: Improvements relating to oil fuel burners
IPC: F23C7/00
Filed: 1922-11-25
Abstract: 209,257. Morgan, G. U. Nov. 25, 1922. Spray burners.-In a liquid fuel burner, the flow of fuel from the burner body 7 to a whirling chamber 5 formed in a bored disc or block 3 on the body and the nozzle 7<a> is regulated by a helically grooved needle 2 which closely fits in the bore of the block 3 and is operated by a milled head 11 screwing on the body 7. The grooves in the needle 2 may form a 3-start thread and increase in cross-section towards the rear of the needle. the full depth being reached at half the pitch of one thread from the forward end. The head 11 may screw on the body 7 with a four-start thread of a pitch equal to the distance the spindle moves from the no-flow to the full flow position. The grooves in the needle 2 may alternatively be of full depth at the forward end of the needle and of shallower depth and, if desired, of narrower width on the part of the needle working in the disc or block 3. The burner may be adjustably mounted in a casting 16 carried by a flange 14 on an annular plate 13 which is bolted to an annular fitting 12 secured to the furnace front. The burner fits the casting at two points 7x, 7y and is secured in position by a set screw. The plate 13 carries louvre plates 20 pivoted on spindles 21 and operated simultaneously by a ring 25 engaging projections 24 on bosses 23 secured to the spindles 21.. The air enters between the plates 20 with a whirling motion preferably opposite to that of the fuel and is directed against the atomized fuel cone by an adjustable plate 17 having a contracted orifice 19. Additional air may enter through ports in the casting 16 controlled by a rotatable shutter 28.