baber/WOPTO huggingface dataset:
Patent GB-447530-A (GB)
Title: Improvements in or relating to the production of cellulose esters
IPC: A47J41/00
Filed: 1935-09-24
Abstract: Cellulose is esterified in presence of a polybasic inorganic acid or acid derivative thereof as catalyst, the ester is ripened in the esterification solution, a salt of basic character containing a metal of Groups 2--4 of the Periodic Table, or two or more substances which react to form such a salt, is added in amount at least sufficient to neutralize inorganic acid present, and the cellulose ester is precipitated from the solution by means of a non-solvent.  The catalyst may be sulphuric acid, sodium bisulphate, methyl sulphate or a mixture of these with each other, or with any other catalyst such as zinc chloride.  The basic salt may be basic aluminium acetate, sodium aluminate, sodium stannate, calcium acetate, barium acetate, zinc acetate, or mixtures of aluminium chloride and sodium acetate, or aluminium acetate, lime, acetic acid, and aluminium sulphate, or zinc chloride and sodium acetate.  The solution may be heated after addition of the salt and before precipitation of the ester.  The process is applicable to the production of cellulose formate, acetate, propionate, or butyrate.  The products are free from sulphur compounds and have high stability to light and heat.  They may be used for the production of artificial filaments.  The ripening may be effected in the presence of metal halides.  The catalyst may be neutralized by an ammonium salt of an organic acid or by an alkali metal carbonate.  In an example, ripened cellulose acetate solution is mixed with basic aluminium acetate, the solution is heated for several hours, and the cellulose acetate is then precipitated.  In another example, sodium acetate is added to a ripened cellulose acetate solution to neutralize the sulphuric acid present.  The solution is heated and zinc chloride dissolved in glacial acetic acid is added.  After several hours the solution is cooled and the cellulose acetate is precipitated.  Specification 446,723 is referred to.
Patent GB-283453-A (GB)
Title: Automatic device for raising wire-windings on vertical conical winding-up drums
IPC: B21C47/04
Filed: 1927-10-06
Abstract: 283,453. Erdmann, E. Oct. 6, 1927. Winding or reeling machines.-The wire windings are automatically raised on a vertical conical winding-up drum a by a disc d inclined towards the arriving wire and rotated by a drum a against which it is pressed. The disc is preferably provided with a conical rim, and its position is adjustable on a slide e.
Patent GB-815476-A (GB)
Title: Improvements in cathode ray discharge devices
IPC: H04N5/68
Filed: 1955-09-15
Abstract: 815,476. Television. GENERAL ELECTRIC CO. Sept. 15, 1955 [Sept. 15, 1954], No. 26477/55. Drawings to Specification. Class 40 (3). [Also in Group XL (a)]  The electron gun of a C.R.T. has a control electrode comprising a parallel-wire grid mesh disposed between the cathode and a first anode having a relatively small aperture such that whilst having a low cut-out potential for the black level of the input signal it can function as a triode amplifier, e.g. for synchronizing pulses at potentials higher than the black level. The output of a video detector and synchronizing signals are fed to the grid, amplified synchronizing signals being taken from terminals connected to the first anode, even when the latter cuts off the main beam.
Patent GB-706056-A (GB)
Title: A device for securing rails
IPC: E01B9/30
Filed: 1951-11-13
Abstract: 706,056. Securing railway rails to sleepers. FOGELBERG, F.I. S. Nov. 13, 1951 [March 22, 1951], No. 26500/51. Class 104 (2) A resilient clip for securing a rail to a sleeper has at least one portion that reaches across and presses 'against a bottom rail flange, portions that. extend downwardly on each side of the sleeper to engage a projection on the face thereof and one portion that reaches across to press against the other bottom rail flange or the top of the sleeper. In the arrangement shown in Fig. 1 the resilient clip 5 or 15 bears on the bottom flange 6 of rail 3 and then passes downwards along the sleeper sides to engage the underside of a pin 7 and then upwards, to bear on the top of the sleeper 1. The clip 5, Fig. 3 has a single point contact but clip 15 is provided with a W-shaped front to present a two point contact with the rail flange 6. In the arrangement shown in Fig. 4 the clip 17 which is of W-formation in plan view Fig. 5, not shown, bears with single point contact at 17 b on one side and with a double point contact at 17g on the other side of the flange of rail 3 and engages the underside of a pin 7 arranged directly beneath the rail. The upper surface of the sleeper 1 may be grooved and the pin 7 notched at its ends to receive the clip 5. The pin 7 may be cast in or passed through a tube 8 cast in a concrete sleeper. A layer of electrical insulating material may be inserted between the outside of the tube 8 and the sleeper 1 or between the pin 7 and the clip 5. The clip may be formed from a closed or split ring and the tension in the clip may be varied by using different diameter pins 7.
Patent GB-872661-A (GB)
Title: Apparatus for filling pressurised liquefied gas converter systmes
Inventor: KUGLER SIMON
IPC: F17C5/02
Filed: 1958-08-18
Abstract: 872,661. Liquefied gas converters. BRITISH OXYGEN CO. Ltd. Aug. 17, 1959 [Aug. 18, 1958], No. 26560/58. Class 8(2). Recharging of a liquefied gas e.g., oxygen converter (not shown), without depressurizing is effected by withdrawing liquid oxygen at substantially atmospheric pressure from an insulated storage vessel 10, Fig. 1, passing it through a duct 14 to a pressure vessel 13 warming to effect pressurization thereof and thereafter using the gas pressure to force liquid oxygen through a hose 22 and a coupling 23 connected to the converter. As shown the pressure vessel 13 is uninsulated and warming is effected by ambient heat. In a modification using an insulated vessel 13, Fig. 2, heat is conducted from the atmosphere through a bridge 25 spanning the insulation space 24. In a further modification warming is effected by an electric heating element immersed in the liquid within the vessel which is fully insulated. In all embodiments the vessel 13 has a pressure gauge 16, a manual relief valve 17 and an automatic relief valve 18.
Patent GB-1335764-A (GB)
Title: Method and apparatus for reducing noise in a transmitted signal
IPC: H03G3/34
Filed: 1971-04-19
Abstract: 1335764 Interference suppression ELECTRONIQUE MARCEL DASSAULT 19 April 1971 [17 April 1970] 26643/71 Heading H4L A noise suppression arrangement for pulse signals from 10 comprises a threshold limiter 16 passing only signals exceeding a level supplied by integrator 27, the signals applied to 27 also deriving from 10 but passing through a gate 22 which is closed when an output pulse is derived so that the threshold is determined by noise alone. Unit 13 provides an adjustable bias for the signal applied to 16, and the gating signal may be controlled in duration by a signal applied at 5 to a unit 20 so that the inhibiting of gate 22 may be extended to block ringing signals. A time-delay unit 31 may also be provided to allow for the delay in deriving the inhibit signal on 21.
Patent GB-1219615-A (GB)
Title: Zirconia-alumina fused refractory materials
IPC: C04B35/484
Filed: 1968-06-05
Abstract: 1,219,615. Fused zirconia refractories. CORHART REFRACTORIES CO. 5 June, 1968 [5 June, 1967; 26 Jan., 1968], No. 26691/68. Heading C1J. A fused refractory consists of at least 50% zirconia; 1-29% Al 2 O 2 ; 0À1-25% SiO 2 ; 0À5-15% rare earth oxide; 0-6% P 2 O 5 ; 0-5% alkaline earth oxide; 0-4% alkali metal oxide; 0-47% Cr 2 O 3 ; 0-25% FeO; 0-4% of a halogen e.g. BaF 2 , the total zirconia, Al 2 O 3 , SiO 2 , R.E. oxide, Cr 2 O 3 , FeO and halogen being at least 90%. Menazite which contains ThO 2  can be used for the R.E. oxides, as can bastnesite.
Patent GB-1000918-A (GB)
Title: Improvements in or relating to draining an oil-processing plant
IPC: C11B3/10
Filed: 1964-06-29
Abstract: In an oil processing plant comprising a refining section including a washing and dewatering device and a drying device, and a bleaching section including a filter, a method of draining oil off the bleaching section is characterized in that the oil is expelled from the filter of the bleaching section by means of water, and the thus-expelled oil is dewatered in the washing and dewatering device of the refining section, and, if desired, dried in the drying device.
Patent GB-478082-A (GB)
Title: Improvements in methods of and apparatus for making foundry cores
IPC: B22C9/10
Filed: 1936-10-02
Abstract: 478,082. Moulding-machines. CRONITE FOUNDRY CO., Ltd., and SNOOK, S. W. G. Oct. 2, 1936, No. 26768. [Class 33 (i)] A foundry core is subjected to hot gases whilst being built. The tube 6 to which the loam &c. is applied is supported by rollers 5 and rotated by a motor and change speed gearing in a casing. 15 through a universal joint 16, cross keys 19; and spider 18. A gas-burner 8, having its jets controlled by cocks 13 and air supplied by pipes 14, is adjustably supported on notched uprights 11. A strickle board 21, Fig. 2, extends the whole length of the core and rests on brackets 22. When the building is finished the strickle is removed, covers 24, one of which may have a flue, are applied, and the speed of rotation is reduced. One motor may be used for rotating either or both of two cores at the same or different speeds at will. Heated gas from other sources may be used and may be led into the tube 6 which may be perforated.
Patent GB-284031-A (GB)
Title: Improvements in a motor-driven sugar cane harvesting machine
IPC: A01D45/10
Filed: 1926-10-27
Abstract: 284,031. Rogers, F. H., (Elias, J. J. M.). Oct. 27, 1926. Sugar-cane harvesting-machines. - A sugarcane harvester is provided with a plough 19 to cut and loosen the cane butts, the plough being situated between two upstanding fenders or guiding walls each comprising a fixed part 16 and a vertically adjustable part 17. The fenders taper forwardly to low pointed parts each of which is adapted to lift and direct fallen or inclined cane stocks to rotary cutters 40 that cut such stocks to permit the forward movement of the machine. The fenders enclose the wheels, the driver's seat, and the working parts of the machine. The rear wheels are driven from the motor 5 through a clutch, a countershaft and chain wheel gearing 12. The cutters 40 are also actuated from the motor through a clutch 89 and longitudinal shafts 47. The front portion 17 of the fenders may be raised or lowered by a hand-wheel 29 connected with a shaft 25 operating rack and pinion gear connected to the fenders. In a. modification the fenders are each formed in one piece that may be adjusted about the rear axle as pivot. The plough in this case is independent of the fenders. Coulters 21 are arranged at each side of the plough.
Patent GB-766174-A (GB)
Title: Improvements in reels for electric cables
IPC: H02G11/02
Filed: 1955-09-21
Abstract: 766,174. Cable reels. HUXALL, J. Sept. 21, 1955, No. 26939/55. Class 99(2) A real b for electric cable carrying power to a portable appliance includes two spring-loaded, carbon brushes h1, h2 which contact slip rings d2, d1, of phosphor bronze, fixed in a disc c of electricalinsulating material, such as "Tufnol" (Registered Trade Mark), the disc being mounted in the reel, and the slip rings being provided with connectors to which respective wires of the cable are secured. As shown, the reel has a cylindrical barrel and flanges frusto-conical in form, and is mounted on a spindle f journalled in bearing blocks gl, g2 of "Tufnol" and rigidly fixed to a cylinder a of light alloy metal. A hand wheel e of electrical-insulating material is secured to the spindle. To speed-up rewinding of the cable, gearing may be incorporated in the reel.
Patent GB-785151-A (GB)
Title: Means for arresting aircraft and other mobile objects
Inventor: COTTON ROBERT B
IPC: B64F1/02
Filed: 1955-09-21
Abstract: 785,151. Dashpots. ALL AMERICAN ENGINEERING CO. Sept. 21, 1955, No. 26978/55. Class 108(3) [Also in Group XXXIII] Four dashpot devices used in an aircraft arresting gear are shown. In each case, engagement of an aircraft with a wire D pulls a piston allowing restricted passage of fluid, through a fluid filled cylinder 16. In Fig. 3, the piston comprises a body 36, formed with a chamber 39 in which slides a piston 361 attached to the valve 37, which co-operates with a seat 40 formed on an annular member 41 connected by supports 42 to the body 36. The chamber 39 is filled with fluid under pressure, and thus the valve is urged on to its seat. The wire D is attached to a rod 33 connected to an arm 34 of a bell-crank lever, the other arm 35 abutting the piston 36<SP>1</SP>. A pull on wire D thus presses the piston back against the pressure in chamber 39, opening the valve to permit restricted fluid flow. In Fig. 7, the valve comprises a head 70 co-operating with a seating formed on an annular member 66. The valve is urged against the seating by a piston 71 subjected to pressure  on the left hand side as shown. A pull on the wire D opens the valve when the pressure in the right hand part of the tube 16 has built up to a predetermined extent. In Fig. 8, the wire D is attached to a valve head 79 which co-operates with a seating 93. The valve is again urged closed by a biased piston 84 in a chamber 83. A pull on wire D opens the valve directly. Movement of the valve is damped by a piston 90 formed on the same stem, working in a cylinder 87 and provided with bleeds 91, 92. In Fig. 9, a pyramidal structure 99 connects an annular piston with the wire, and each of its four faces contains a flap valve 96 urged to the closed position by a spring 97.
Patent GB-1327840-A (GB)
Title: Packaging of containers
IPC: B65D71/00
Filed: 1971-04-19
Abstract: 1327840 Packaging UNILEVER Ltd 19 April 1971 [18 April 1970] 27021/71 Heading B8C A wrap-around carrier for rimmed containers includes triangular portions 12 which, on application of the carrier blank to the containers, snap under the container rims. The triangular portions have free edges 13 and 14, the third edges being formed by crease lines 15. The edges 13 are shorter than the width of the carrier panels 5 in which they lie by an amount equal to the thickness of the container rims. The container tops may be protected by torques 17 projecting into the openings 11 which receive the edges of the containers. If the containers have beading adjacent their rims, the beading will be engaged by the edges 16 of the openings 11. The carrier material may be duplex board or thin plastics sheet. In making the carrier, the blank is applied to the tops of the containers, after which the containers need no further guidance. The half completed pack is lifted and the free edges of the blank are joined by tabs and slots 6 and 7 or by glue.
Patent GB-1458963-A (GB)
Title: Illuminating magnifying glass
IPC: G02B25/02
Filed: 1976-06-30
Abstract: 1458963 Illuminated magnifying glass JIM CHO TAK [trading as GREAT WALL PLASTIC FACTORY] 4 March 1975 27039/76 Divided out of 1458962 Heading G2J The disclosure is identical to the Parent Specification 1458962 but the claims are directed to the shape of the illumination aperture.
Patent GB-643360-A (GB)
Title: Improvements in and relating to the synchronous operation of dynamo electric machines
IPC: G08C19/46
Filed: 1947-10-08
Abstract: 643,360. Control of A.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd., and CHOUDHURY, S. U. A. Oct. 8, 1947, No. 27046. [Class 38(iii)] [Also in Group XXXVIII] An electric motor control system for machines of the polyphase wound rotor induction type operating in synchronism under starting and running conditions on a polyphase supply has means for applying a momentary polyphase excitation followed by single phase excitation for synchronizing. A momentary three-phase supply is connected to the stator windings 1, 3 by contacts 11, 12, 13 of a switch to obviate the possibility of the rotors remaining in the short circuit condition, i.e. about 180 degrees displacement, and immediately afterwards contact 14 breaks so that the windings are supplied with single phase for synchronizing. After a delay of, say, two to four seconds contact 15 makes to restore the threephase supply and the motors continue to run in synchronism. A common resistor 16 is connected in parallel with the secondary windings 2, 4 in order that the motors produce torque when in synchronism but since this resistor is not effective when the rotors are displaced 180 degree series resistors 17, 18 may be inserted in the interconnecting lines to ensure that torque is produced to move the rotors against high torque. Improvement in the synchronizing torque can be had by arranging that, after starting, the resistors 17, 18 are in series with the resistor 16. Finally either resistor 16, or resistors 17, 18, may be short circuited, the resistor left in circuit forming the synchronizing resistor. Specification 518,402 is referred to.
Patent GB-1318359-A (GB)
Title: Pneumatic apparatus for handling threads
IPC: B65H54/88
Filed: 1971-04-19
Abstract: 1318359 Thread cutters RHONE-POULENC-TEXTILE 19 April 1971 [16 April 1971] 27059/71 Heading B4B [Also in Division D1] Pneumatic apparatus for handling textile threads or strands (See Division D1-D2) incorporates a thread-cutter having a handle 12 and a stirrup 12<SP>1</SP> acting on a spring 14-loaded, fluid-regulating ball device 13. A diaphragm 15, when actuated by compressed air, urges a spring 19-loaded piston-knife 16 against a counterknife 17 to cut the passing thread 10 which they surround. In normal use, an operator presses the handle 12 and on release thereof the cutter is operated and a thread delivery conduit 3 is obstructed thus preventing any renewed thread engagement.
Patent GB-255694-A (GB)
Title: Improvements in and relating to locking and quick releasing devices suitable for accumulator casings and covers and for other purposes
IPC: H01M50/147
Filed: 1925-10-28
Abstract: 255,694. Ceag Miners' Supply Co., Ltd., and Plummer, R. J. Oct. 28, 1925. Battery lamps.-In a miner's safety lamp, the cover 4, Fig. 3, of the accumulator casing is formed with one or more lugs 5 having an inclined vertical face adapted to deform the cover or receptacle or both as the cover is pushed down on to the receptacle, the shoulder of the lug snapping into a corresponding recess 3 in the wall of the receptacle. One or both side faces of the lug are tapered as at 6, Fig. 2, to permit the cover to be disengaged by a rotary movement. The lugs and recesses, in conjunction with a corrugation 10, Fig. 8, in the base of the accumulator casing 1 serve to position the electrodes 13, 14 in relation to the lamp contacts 17, 18, the corrugation 10 engaging a corrugation 11 in an outer protective casing 9 carrying the lamp and thus determining the relative positions of the accumulator casing 1, the cover 4 therefor, the outer casing 9 and the cover 12 therefor.
Patent GB-684767-A (GB)
Title: Method for the production of sodium penicillin
IPC: C07D499/00
Filed: 1949-10-21
Abstract: Highly purified sodium salts of penicillin are manufactured by metathetical reaction of an organic base salt of penicillin with sodium thiocyanate, chlorate or perchlorate, a sodium phenolate, sodium ethyl isonitrosocyanacetate or a homologue thereof or a sodium dialkyldithiocarbamate, in a substantially inert solvent medium, comprising a chlorinated organic liquid in admixture with a liquid aliphatic ketone, an alkanol of 1-5 carbon atoms per molecule or a liquid lower aliphatic nitrile, wherein the sodium penicillin product is substantially insoluble and the other product of the metathesis is soluble.  The organic base salt of penicillin is advantageously dissolved in the chlorinated organic liquid, which is preferably of the type ZCHCl2, wherein Z represents hydrogen, chlorine or an organic radical which may or may not contain additional chlorine atoms.  The other constituent of the final solvent mixture may also be present in the solution of the organic base salt of penicillin, but is advantageously used as solvent for the reagent sodium salt, for which purpose it may sometimes desirably contain a small amount of water.  Examples describe the interaction of: (1) a solution of N-ethylpiperidine penicillin in chloroform and a solution of sodium thiocyanate in acetone; (2) a solution of a triethylamine salt of penicillin in tetrachloroethane and a solution of sodium phenolate in acetone; (3) a solution of a triethylamine salt of penicillin in tetrachloroethane and a solution of sodium dimethyldithiocarbamate in n-butanol.  Lists of additional reagents and solvents are given. Specification 622,988 is referred to.  The Specification as open to inspection under Sect. 91 comprises also the use of sodium iodide (e.g. in acetonitrile) as the reagent sodium salt.  This subject-matter does not appear in the Specification as accepted.
Patent GB-842873-A (GB)
Title: Improvements in or relating to a process for the treatment of polyethylene
IPC: C08J9/10
Filed: 1956-09-05
Abstract: Polyethylene is exposed to high energy radiation of at least 1 X 106 rep in the presence of a minor amount of a rubber accelerator or vulcanizing agent containing sulphur, selenium, tellurium or a sulphonyl hydrazide, which is preferably incorporated by admixing with molten polyethylene. before irradiation.  The additive may be elemental sulphur, selenium or tellurium, selenium diethyl dithiocarbamate, bis (dimethylthiocarbamoyl) disulphide, an alkyl phenol sulphide, dipentamethylene tetrasulphide, 4,41-dithio-dimorpholine, 2-mercaptobenzothiazole, or its zinc salt, tetramethylthiuram mono- or disulphide, tetrabutylthiuram monosulphide, tetraethyl thiuram disulphide, zinc dibenzyl diethyl, dimethyl or dibutyl dithiecarbamate, dibutyl xanthogen disulphide, or m-benzene-, p, p1-diphenylbis (sulphonyl hydrazide) or p, p1 oxybis (benzene sulphonyl hydrazide).  Cellular products may be obtained by adding a bis (sulphonyl hydrazide) to molten polyethylene at a temperature below the blowing point of the sulphonyl hydrazide, the mixture then being blown by heating and irradiated either before or after blowing.  The irradiated composition may also contain an anti-oxidant such as diphenyl-p-phenylene-diamine, phenyla -naphthylamine, a diarylamine or a ketone reaction product of an arylamine.ALSO:Polyethylene is exposed to high energy radiation of at least 1 x 106 rep in the presence of a minor amount of a rubber accelerator or vulcanizing agent containing sulphur, selenium, tellurium or a sulphonyl hydrazide, which is preferably incorporated by admixing with molten polyethylene before irradiation.  The additive may be elemental sulphur, selenium or tellurium, selenium diethyl dithiocarbamate, bis (dimethyl-thiocarbamoyl) disulphide, an alkyl phenol sulphide, dipentamethylene tetrasulphide, 4,41-dithio-dimorpholine, 2-mercaptobenzothiazole, or its zinc salt, tetramethylthiuram mono- or disulphide, tetrabutylthiuram monosulphide, tetraethyl thiuram disulphide, zinc dibenzyl diethyl, dimethyl, or dibutyl dithiocarbamate, dibutyl xanthogen disulphide, or m-benzene-, p,p1-diphenylbis (sulphonyl hydrazide) or p,p1 oxybis (benzene sulphonyl hydrazide). Cellular products may be obtained by adding a bis (sulphonyl hydrazide) to molten polyethylene at a temperature below the blowing point of the sulphonyl hydrazide, the mixture then being blown by heating and irradiated either before or after blowing.  The irradiated composition may also contain an anti-oxidant such as diphenyl-p-phenylene-diamine, phenyl-a -naphthylamine, a diarylamine or a ketone reaction product of an arylamine.ALSO:Cellular polyethylene is obtained by adding a bis (sulphonyl hydrazide) to molten polyethylene at a temperature below the blowing point of the sulphonyl hydrazide, the mixture then being blown by heating and irradiated with high energy radiation of at least 1 x 106 rep either before or after blowing.