baber/WOPTO huggingface dataset:
Patent GB-923726-A (GB)
Title: Improvements in or relating to the continuous production of cellulose esters
IPC: B01J19/18
Filed: 1961-08-16
Abstract: <PICT:0923726/IV(a)/1> <PICT:0923726/IV(a)/2> Cellulose is continuously esterified in a reaction vessel by continuously introducing a mixture of cellulose and part of the esterifying agent (e.g. glacial acetic acid and 66 DEG  Be sulphuric acid) into the inlet 2 (Fig. 1) of a reactor comprising a casing 1 having internal discontinuous hollow ribs 4 an outlet 3 and inlet tubes 11 and 12 for the continuous introduction of the remainder of the esterifying agent (e.g. acetic anyhydride) into the mixtures which is agitated and caused to travel from the inlet to the outlet of the reactor by the cylindrical hollow shaft 5 having an interrupted worm thread in the form of separate hollow paddles 6 (Figs. 1 and 2).  Underneath the inlet 2 the shaft 5 has one short continuous helical screw thread 13. The shaft 5 is rotated and also axially reciprocated with respect to the casing 1.  The temperature within the reactor is regulated by circulating a heat-exchange fluid through hollow ribs 4, shaft 5, paddles 6 and jackets 7 to 10 surrounding the casing 1.  The hollow ribs 4 are provided with inlet tube 14 and outlet tube 15 for the heat exchange fluid and also with an internal deflector plate or baffle 16.  The hollow shaft 5 is provided with inlet and outlet tubes 17 and 18 for the heat exchange fluid which also circulates through the separate hollow paddles 6 by means of inlet and outlet openings 19 and 20.  The esterified cellulose and other reaction products are discharged from the reactor through the outlet 3. Specifications 626,067 and 802,863 are referred to.
Patent GB-179891-A (GB)
Title: Automatic setting system of the headlights of motor vehicles
IPC: B60Q1/124
Filed: 1921-11-07
Abstract: 179,891. Chauvet, R. March 10, 1921, [Convention date]. Void [Published under Sect. 91 of the Act]. Vehicle lamps, directing.-Means for directing the head lamps of motor vehicles from the steering-gear comprises lamp supports a rotatably mounted in bearings b secured to the vehicle frame and pivotally connected at their lower ends to hollow links g slidably engaging rods h which are ball-jointed to members k adapted to be clamped to the front-wheel coupling-rod of the steering-gear by bolts h. If desired the lamps may be mounted on supports independent of the rods a and connected to the latter by an " amplifying device " so as to ensure that the angular movements of the lamps shall be equal, as distinct from proportional, to the angular movements of the front wheels.
Patent GB-1137589-A (GB)
Title: Fluorine-containing telomer compositions
IPC: C07C19/08
Filed: 1966-07-01
Abstract: 1,137,589. Mould release agent. PENNSALT CHEMICALS CORP. 1 July, 1966 [12 July, 1965], No. 29708/66. Heading B5A. [Also in Divisions B2, B3, C2, C3, C5 and D1] A mould-release agent comprises at least 90% by weight of one or more polymers of the formula R(CF 2 CF 2 ) n X, where R is a C 1 -C 4  perfluoroalkyl or monochloroperfluoroalkyl group, X is chlorine or fluorine and n is an integer of from 6 to 10 and the balance of polymers of the above formula wherein n is an integer from 11 to 16. The polymer may be applied in the form of a solution, e.g. in a fluorohaloalkane solvent, or a dispersion with a surface-active agent.
Patent GB-171029-A (GB)
Title: Improvements in or relating to internal combustion engines
IPC: F02F11/00
Filed: 1920-10-21
Abstract: 171,029. Birmingham Small Arms Co., Ltd., and Pearsall, R. H. Oct. 21, 1920. Crank chambers.-To prevent lubricating-oil from being forced out of the crank-bearings in the crank-chambers the pressure in the chamber is relieved by a non-return disc valve 6 which surrounds the crank-shaft. The ball bearings shown may be replaced by another form of bearing, the valve may surround any other shaft, for example a cam shaft, and the valve may be constructed as a flexible member fixed at its periphery.
Patent GB-620128-A (GB)
Title: Improvements in means for noise suppression in thermionic valve amplifiers
IPC: H04B15/00
Filed: 1945-11-08
Abstract: 620,128. Valve amplifying circuits. SOC. ANON. DE TELECOMMUNICATIONS. Nov. 8, 1945, No. 29796. Convention date, Dec. 1, 1942. [Class 40 (vi)] In a circuit for suppressing noises arising in direct current supply circuits to a thermionic valve amplifier, the corresponding electrodes of two successive amplification stages are connected to the same supply source through two coils wound on a common magnetic core and so determined that the noise produced in the second stage neutralises that produced in the first stage. Fig. 1 shows the circuit elements of a four-wire telephone repeater having two paths 1, 1<1>, each comprising two amplification stages 2 and 3. The filaments of valves 2 and 21 are fed in series through coil 14 from D.C. supply terminals 11, and the filaments of valves 3 and 31 are similarly fed through coil 15. Coils 14 and 15 are wound on the same magnetic core, and it is shown that by selection of the appropriate turns ratio, it is possible for noise voltages present in the D.C. supply circuit to be neutralised throughout the two amplification stages in each path. A modification in which the invention is applied to the anode supply circuits is also described. The invention is particularly applicable to noise frequencies between 300 and 3000 cycles per second.
Patent GB-299367-A (GB)
Title: Improvements in methods of weaving and in looms therefor having stationary weft supplies
IPC: D03D41/00
Filed: 1928-10-17
Abstract: 299,367. Nicolet, W. Oct. 24, 1927. [Convention date]. Looms adapted for simultaneous picking through consecutive sheds; weft inserters not carrying bobbins &c., looms with.- In a loom wherein wefts 9, 11 are inserted simultaneously or in rapid succession in two sheds formed by shedding-combs 5, 6 as described in Specification 262,962, the rear weft is inserted from a fixed spool 16 by a thread guide, which may comprise an eye guided in a slotted tube 18a and operated by a cable &c., and the combs are opened before the guide has finished its movement, a catch lever 19 with a hooked end engaging the weft and moving it into a diagonal position in front of a beating up comb 10. The moving apart of the combs before the guide comes to rest enables the weft to extend in this diagonal position direct from the selvage to the guide, whereby more certain engagement of the whole of the weft with the beating up comb 10 is assured. The combs may move apart whilst the guide 18 is still in the shed, or later, in which latter case, as shown in Fig. 5, the guide continues to move some distance after it has left the shed. Preferably the guide 18 continues to move after the lever 19 has engaged the weft thread 11, so as to keep this tight. Otherwise an auxiliary device such as a spring is arranged at the centre of the warp track to tension the thread. To prevent the thread 11 exerting tension on the crossed outer warp threads these are masked by vertically adjustable shield plates 20, Fig. 6, or wires carried by the combs, the thread 11 sliding along the smooth edges of the shields until these have uncrossed, which occurs just after the warps have uncrossed. The front weft is inserted by a shuttle.
Patent GB-154070-A (GB)
Title: Improvements in gun stocks
IPC: F41C23/22
Filed: 1919-12-02
Abstract: 154,070. Steward, W. A. Dec. 2, 1919. Try guns. - Consists in providing a stock with a number of butt end-pieces of different thicknesses so that the length of the stock can be adjusted. As shown, the butt plate a, Fig. 1, can be replaced by one of the end-pieces a<1>, a<2>, or a<3>, Fig. 2, the same fastening- screws 8 being used. In a modification, the end-piece is secured by a spring catch. The end-pieces may be made in various shapes.
Patent GB-974381-A (GB)
Title: Improvements in or relating to electron-beam tube amplifiers
IPC: H01J25/49
Filed: 1962-08-07
Abstract: 974,381. Electron-beam parametric amplifiers. SIEMENS & HALSKE A.G. Aug. 7, 1962 [Aug. 9, 1961], No. 30160/62. Heading H1D. A parametric amplifier comprises an amplifying section consisting of a non-twisted quadripole, 1, 2, 3, 4, Fig. 1, in which an electric field, stationary in both space and time and exhibiting potential surfaces running in straight lines in the direction of the beam, is maintained. Electrons a 1 -a 6 , b 1 -b 6  having positions and velocities as shown in Fig. 2 at their entry into the amplifying section will be deflected so as to lie substantially in one plane, as shown in Fig. 1. The degree of divergence of the electrons from the axis depends upon their position and their velocity and direction, the greater the radial component of velocity the greater the deflection. Any input or output coupler in which the electrons are deflected from the axis of the unmodulated electron beam is suitable, but one in which the deflection is substantially in one plane only is especially suitable. Such a coupler is shown in Fig. 5, and comprises a series of discs 5 each subdivided in two by a gap 7 subtending an angle at the axis 6, metallic strips 8, 9 connecting successive parts together. The structure thus forms a Lecher line made up of a parallel wire line folded in zig-zag fashion. A longitudinal magnetic field is provided, which partly focuses the electron beam.
Patent GB-1242790-A (GB)
Title: Improvements in or relating to air filters for air-consuming machines
IPC: F02M35/04
Filed: 1969-06-13
Abstract: 1,242,790. Treating I. C. engine charge. NOKIA AB OY. June 13, 1969 [June 14, 1968], No.30180/69. Heading F1B. [Also in Division B1] An air filter, particularly for an I. C. engine, comprises two elements 16, 17 (see Division B1) connected to a cyclone 18 to be connected (axially) to the air intake of the carburetter. Turbulence of the intake air is then created which results in a better mixing of the air and fuel in the carburetter. Air from the filters 16, 17 passes through funnelshaped passages 20, 21 with cylindrical ends 22, 23.
Patent GB-871536-A (GB)
Title: Motion picture camera
IPC: G03B1/12
Filed: 1957-09-26
Abstract: 871,536. Kinematograph cameras. HANDLER, A., and VOCKENHUBER, K. Sept. 26, 1957 (Sept. 28, 1956], No. 30203/57. Class 97(1) A device for indicating the extent to which the spring drive is wound comprises a disc geared to rotate only through half a turn at the most during a full spring run and carrying a marked sector having a corresponding angular size movable behind a series of windows. In the form shown the disc 5 is coaxial with the spindle 1 of the spring drum and is driven therefrom by gearing 2, 3, 4, 6. The coloured sector 7 moves behind windows 9 separated by lands 12 which may be spaced to act as graduations indicating the movement of the end 8 of the sector 7 and indicating, for example, metres of film fed.
Patent GB-842222-A (GB)
Title: Colour radiography
IPC: G03C5/16
Filed: 1957-09-26
Abstract: 5-(a -Octadecyl-succinoylamino) indazolone is obtained by refluxing 5-amino-indazolone with a -octadecyl-succini  acid anhydride in pyridine.  Specifications 524,555, 524,555 and 701,039 are referred to.
Patent GB-270977-A (GB)
Title: Improvements in display-stands
IPC: A47F5/11
Filed: 1926-07-22
Abstract: 270,977. Hildesley, Ltd., H., and Goodchild, E. A. H. July 22, 1926. Card stands.-A display stand is made from sheet material scored, slitted and bent to support an article at an angle and hold it in place. In the construction shown, a cardboard blank is formed with slits 64, 65 and scored lines 66, 67, 67<a> so that the parts can be bent as shown in Fig. 3, to leave an oblong frame 57 and sloping supports 60. A plate 69 is secured to the front and the whole may fold flat.
Patent GB-813252-A (GB)
Title: Improvements in or relating to vacuum deposition equipment
Inventor: SNOAD RONALD HARVEY
IPC: C23C14/22
Filed: 1956-06-11
Abstract: 813,252. Coating by vapour deposition. STANDARD TELEPHONES & CABLES, Ltd. June 11, 1956, No. 30333/57. Divided out of 813,251. Class 82(2) Vacuum deposition apparatus, in which a layer of an evaporable substance (e.g. selenium) is deposited on a surface (e.g. of steel) as a succession of coatings formed during repeated passages of the surface through the vapour of the substance, includes a rotatable carrier for passing the surface repeatedly through the vapour (e.g. as described in Specification 813,251), and a radiation pyrometer responsive to heat radiated from the surface when it is carried past the pyrometer. The temperature of the surface is automatically controlled by regulating the heat delivered by supply apparatus (e.g. electric heating elements mounted on the carrier) by means responsive to the pyrometer. The latter may measure the temperature of each surface, or the average temperature of a number of surfaces, and may be used in conjunction with a proportional electronic controller. As shown, the pyrometer 35 is suspended by a stud 36 from a disc 34 closing the end of a relatively long tube 32 which is bolted to a mounting 33 on the vacuum deposition chamber 1 and is provided with sealing rings 40. The disc 34 carries two glass-to-metal seals 39 for electrical connections. To prevent heat from the chamber 1 being conducted to the pyrometer, the stud 36 is made of asbestos, synthetic resin, or other non-conducting material, the ends of the tube 32 may be cooled by water circulating in pipes 41, and the pyrometer may be surrounded by a tube 43 also made of non-conducting material, whilst the inside of the tube 32 may be roughened to prevent reflection.
Patent GB-303527-A (GB)
Abstract: 303,527. I. G. Farbenindustrie Akt.- Ges. Jan. 6, 1928, [Convention date]. Diazonium fluorsulphonates, which are not sensitive to percussion and friction and besides being used in dyeing are insecticides, are produced by treating a diazonium compound with free fluorsulphonic acid. In an example, 4- chlor-2-aminotoluene is dissolved in hydrochloric acid, diazotized, and treated with 40 per cent fluorsulphonic acid. The diazonium fluorsulphonate is immediately precipitated. According to other examples, diazonium fluorsulphonates are obtained starting with an acetic acid solution of 4-aminoazobenzene and a sulphuric acid solution of 1-aminoanthaquinone. Other starting materials specified are diazotizable polynuclear carbocyclic compounds and mono and polynuclear diazotizable heterocyclic and carboheterocyclic systems. The aminoazo compound obtained from 2-diazophenetol and 1-aminonaphthalene and aminopolyazo compounds are also mentioned.
Patent GB-1243595-A (GB)
Title: Improvements in screw type feeders
Inventor: WILKINS DENNIS MALCOLM
IPC: B65G33/00
Filed: 1969-06-17
Abstract: 1,243,595. Screw conveyers. COAL INDUSTRY (PATENTS) Ltd. 16 June, 1970 [17 June, 1969], No. 30545/69. Heading B8A. An assembly for feeding finely-divided material at a substantially constant rate comprises a screw 1, 2, 3, 4 on a rotatable shaft 5 and enveloped by a tubular housing 6, 7, 8 respectively forming entry, overspill and discharge sections 9, 10, 11. Material excess to that required by the discharge section 11 is fed by screw part 3 to screw part 4, the rate of feed decreasing along the length of section 10, excess material being discharged through an overspill aperture 15 having a cover-plate 16 hinged at 17. The aperture 15 is adequate for, say, 50% overload. For overloads geater than, say, 100% overspill occurs also at an overspill discharge outlet (18), Fig. 2 (not shown), provided in the entry section 9.
Patent GB-428138-A (GB)
Title: Improvements relating to chairs, settees or the like
IPC: A47C3/025
Filed: 1933-11-03
Abstract: 428,138. Adjustable seats. GARRETT, W. C., 39, Hamilton Crescent, Palmers Green, London. Nov. 3, 1933, No. 30579. [Class 52 (ii)] In a chair of the kind having an adjustable back hinged to a sliding seat frame 2, a guide bar 5 is located under the seat and coacts with a positioning member 15 which comprises an intermediate fulcrum member resting on the upper surface of the guide bar, an upper member 14 pivotally secured to the under side of the seat, and a lower member 16 located under the guide bar. The positioning member may be in the form of a flattened S, a double rectangle as shown in Fig. 4, or of E-form. When the seat is loaded, the member grips the bar 5 and prevents sliding movement of the seat. The seat slides on a transverse member 4 or on the front ends of guide bars 5. The guide bars 5 are hinged to the fixed frame at the front and supported by springs 12 at the rear.
Patent GB-1427645-A (GB)
Title: Pregnane derivative its preparation and compositions thereof
IPC: C07J53/00
Filed: 1974-07-10
Abstract: 1427645 16,17-Cyclohexano pregnanes INSTITUT ORGANICHESKOI KHIMII IMENI ND ZELINSKOGO AKADEMII NAUK SSSR and INSTITUT AKUSHERSTVA I GINEKOLOGII AKADEMII MEDITSINSKIKH NAUK SSSR 10 July 1974 30618/74 Heading C2U [Also in Division A5] The invention comprises 6α-methyl-cyclohexano[16α,17α]pregn- 4 - ene - 3,20 - dione (I), and its preparation from 3#-acetoxycyclohexano[16α,17α]pregn- 5 - en - 20 - one (II) by the sequency : II # 3#-acetoxy-5α,6α- epoxy - cyclohexano[16α,17α]pregnan - 20- one # 3#,5α - dihydroxy - 6# - methyl - cyclohexano[16α,17α]pregnan - 20 - one # 5α- hydroxy - 6# - methyl - cyclohexano[16α,17α]- pregnane - 3,20 - dione # I, the last step being concurrent 4,5-dehydration and 6-epimerization effected with HCl/AcOH. Contraceptive compositions for oral and parenteral administration comprise compound I, mestranol and a carrier.
Patent GB-1177009-A (GB)
Title: Improvements in or relating to 9alpha, 11beta-Dichloro-Pregnane Compounds
IPC: A61K31/57
Filed: 1967-07-04
Abstract: 1,177,009. Anti-inflammatory compositions. SYNTEX CORP. 4 July, 1967 [28 July, 1966], No. 30655/67. Heading A5B. [Also in Division C2] Pharmaceutical compositions for topical use comprise anti-inflammatory agents of the formula (wherein A and B are each H or C 1-5  alkyl and Z is a carbon-carbon double or single bond) and suitable carriers. They may also contain various other therapeutic agents e.g. antibiotics such as neomycin sulphate.
Patent GB-244113-A (GB)
IPC: F42B7/12
Filed: 1925-12-04
Abstract: 244,113. Garkovenko, W. de, and Fighiera, M. Dec. 8, 1924, [Convention date]. Gun cartridges.-Relates to sporting cartridges for shot guns. The mouth of a cartridge is closed by crimping the end of the tube into a pleated cone 3, Fig. 2, which is then pressed flat upon the charge of shot as shown in Fig. 3, so that no shot-retaining wad is necessary. The dies shown in Figs. 5 and 6 are used in the successive stages of the closing operation, the second die, Fig. 6, forming a flange 9 around the mouth as the cone is pressed in. There is preferably provided within the case a cup 10 for the powder charge, this container being of truncated conical form and having a definite capacity suited to the powder used. The upper edge 12 of the cup is strictly perpendicular to the centre line of the cartridge, and the end of the primer is flush with the base. Above the powder charge is a disc of tarred cardhoard, supported on the edge of the cup. and on this disc several wads or discs of greased felt and cardboard. The construction is stated to ensure uniform distribution of the explosive force upon the charge, resulting in. satisfactory grouping of the shot and regularity of action.
Patent GB-1047954-A (GB)
Title: Improvements in or relating to the production of urea
IPC: C07C273/04
Filed: 1963-08-02
Abstract: Urea is produced by the reaction of CO2 with NH3, in stoichiometric amounts or using excess ammonia, to form an effluent containing urea, water, and unreacted CO2 and unreacted NH3 wherein unreacted CO2 and NH3 are separated from the effluent for re-use in producing urea, comprising subjecting the effluent to a first rectification at a gauge pressure of 10 Kg/cm.2 to 25 Kg/cm.2, at a head temperature of 90 DEG  C. to 130 DEG  C. and a still temperature of 130 DEG  C. to 170 DEG  C. to drive off NH3 and CO2 leaving a depleted liquid; subjecting the depleted liquid to a second rectification at a gauge pressure to 0 to 3 Kg/cm.2, a head temperature of 60 DEG  C. to 110 DEG  C. and a still temperature of 100 DEG  to 140 DEG  C. to drive off the remaining CO2 and NH3 leaving an aqueous solution containing urea, removing from the aqueous solution an amount of water equal to the water produced in the urea synthesis reaction to form a concentrated urea solution, separating urea from the concentrated urea solution by crystallization leaving a urea mother liquor, absorbing the CO2 and NH3 from the second rectification in the urea mother liquor to gauge pressure of 0 to 3 Kg/cm.2 to form an absorbate, absorbing the CO2 and NH3 from the first rectification in the absorbate at a pressure of 10 to 25 Kg/cm.2 to form a solution containing CO2 and NH3 for re-use in the production of urea.  It is preferred to wash the gas recovered from the second absorbing step with a portion of the said liquor to remove CO2 therefrom and to liquefy the NH3 recovered from the second absorbing step and to use it in the production of urea.  The heat of absorption evolved in the second absorbing step may be employed to evaporate water from the solution in the second rectification stage.  Some of the water may be removed for preference from the urea solution at an absolute pressure of 40 to 100 mm. mercury, and the urea is for preference separated from the said aqueous solution by crystallization and centrifugation. The invention is described with reference to a flow sheet (not shown).
Patent GB-951243-A (GB)
Title: Improvements in or relating to tool holder turrets with automatic control of the change of tools
IPC: B23B29/32
Filed: 1960-09-06
Abstract: 951,243. Lathe tool turrets. EDUARD DUBIED ET CIE S.A. Sept. 6, 1960 [Sept. 9, 1959],'No. 30757/60. Heading B3T. A tool-holder turret is provided with means for automatically indexing a pair of tools mounted thereon, a pressure fluid source lifting the turret against spring pressure to release locating means and rotate the turret. The turret 7, Figs. 1 and 2, which may be provided with roughing and finishing tools 12, 12<SP>1</SP>, respectively, rotates about a pin 3 secured to a machine tool part 1. The turret is held to the base 3 by spring discs 27 and a thrust collar. A dished piston 25, Fig. 1, moves in a recess in the turret above an enlarged part of the support pin. A stop-member 24 is slidably keyed to the upper portion of the pin at the top face of the turret. A rotatable vane-type segmental piston 21, Fig. 2, is arranged to turn within a recess bounded by the stop-member 24 and the turret. On the application of fluid pressure through the orifice A, piston 25 is lifted and the turret raised against the spring discs 27. A passage 19 is thus brought into communication with the fluid pressure below the piston and pressure thus applied to the face 22 of the vane 21. The latter moves through 180 degrees, carrying with it the turret. On release of pressure locating pins 14, 14<SP>1</SP> with conical heads ensure the correct location of the turret on its seating. Pressure is next supplied to orifice B to return the turret to its initial position. The tools are pre-set in holders which are clamped in guides on the turret by eccentric pins.
Patent GB-715596-A (GB)
Title: Improvements relating to electric accumulators
Inventor: SLADIN HENRY ALISTAIR
IPC: H01M4/73
Filed: 1952-12-04
Abstract: 715,596. Batteries. TUDOR ACCUMULATOR CO., Ltd. Sept. 28, 1953, [Dec. 4, 1952.] No. 30759/52. Addition to 691,712. Class 53. An accumulator grid comprises a moulded plastic frame a having one or more vertical ribs c and horizontal ribs b which are staggered and alternately on opposite sides of the grid as shown in Fig. 2. The inner surfaces of the ribs are recessed to receive vertical conductor bars g which rest at their lower ends in slots or recesses in the bottom bar h of the frame and depend from a conductor bar f which is received in the top bar of the frame. The bars g pass through holes in the top bar a part e of which is fitted and secured in position after the conductors have been inserted in the frame. Active material is pressed from opposite sides of the grid into the spaces i and surrounds the bars g.