baber/WOPTO huggingface dataset:
Patent GB-766840-A (GB)
Title: Improvements in or relating to production of perfluorochloroolefin polymers
IPC: C08F6/26
Filed: 1954-09-23
Abstract: A solid homopolymer of a 2 to 4 carbon atom perfluorochloroolefin or copolymer thereof with another fluorine-containing olefin is separated from the corresponding monomer by introducing a mixture of polymer and monomer produced by a polymerization process into a tubular drying zone under conditions such that liquid monomer is vaporized and solid polymer is discharged from the tubular drying zone in admixture with vaporous monomer and is recovered therefrom. The tubular drying zone is preferably maintained at a temperature between 60 DEG  and 250 DEG  C. and conditions adjusted so that the outlet velocity is above 50 feet per second and below 300 feet per second.  The perfluorochloroolefin may be trifluorochloroethylene, difluorodichloroethylene, or 2,3-dichloroperfluorobutene (CF3CClCClCF3) and the fluorine-containing olefin may be perfluorobutadiene, vinylidene fluoride, difluoroethylene, trifluoroethylene, perfluorostyrene, perfluorocyclobutene or phenyl trifluoroethylene.  A continuous polymerization process is described, using as catalyst trichloroacetyl, benzoyl, trifluoroacetyl, difluorochloroacetyl, chloroacetyl or dichlorofluoroacetyl peroxide.ALSO:Trifluorochloroethylene is prepared by a continuous process in which trifluorotrichloroethane is treated with a slurry of zinc, tin, manganese, magnesium or iron in a solvent such as methanol, ethanol, butanol, propanol, glycerol or dioxane.
Patent GB-875579-A (GB)
Title: Improvements relating to centrifugally operated fluid valves
Inventor: HUTCHINSON DEREK MICHAEL
IPC: F16K31/56
Filed: 1956-09-08
Abstract: 875,579. Valves. ALLEN & SONS (TIPTON) Ltd., W. G. Dec. 6, 1957 [Sept. 8, 1956], No. 27547/56. Class 135. [Also in Group XXXIV] A port 5 connected to a source of hydraulic pressure is normally prevented from communicating with an outlet port 6 leading to the brake mechanism of a vehicle, such as a train, by a piston closure 4 disposed in a valve body 2. Rotatable on the latter is a housing 1 driven by a sprocket 3 from some rotating part, e.g. vehicle wheels, whose speed is directly related to that of the vehicle. When a given runaway or critical speed is attained, a number of flyweights 9 in the housing 1 move outwardly and through bell-crank levers 17 and a sleeve 19 move the closure 4 to place the ports 5 and 6 in communication. Each fly-weight 9, only one being shown, is pivoted to one end of a rod 11 and a lever 17, each of the latter being rotatably mounted on a pin 23; the other end of each rod 11 is located in a sphere 14 rotatably mounted in a seating in the casing 1. Each rod 11, the length of which is adjustable, is surrounded by a spring 16. The rods 11 and the lever arms between pivots 10, 23 form toggle linkages which adopt an over-centre position when the closure 4 is actuated against the action of a spring 16 which loads the sleeve 19. The brake mechanism remains operative until a handle 24 is used to reset the closure and hence the control mechanism.
Patent GB-1401171-A (GB)
Title: Containers
IPC: B65D19/06
Filed: 1972-11-03
Abstract: 1401171 Load handling pallets AIRFLEX CONTAINERS Ltd and C D D HICKEY 3 Nov 1972 27562/74 Divided out of 1387409 Heading B8H A load handling pallet with a cover for the load carried thereon comprises a base 21 with an upstanding peripheral flange 25 with slots 24 therein and an envelope 10 with flaps 22 around the mouth thereof each with a hook 23 to engage in a respective slot. Strips 27 secure the envelope about the load and holes 30, 31 in the base facilitate its securement to an aircraft deck or pallet. A conventional wooden pallet (not shown) may be positioned on the base and the height of the flange 25, apart from the corners 28 and the spacing 29 between the flaps allow the insertion of conventional fork tines to lift the said pallet.
Patent GB-413902-A (GB)
Title: Improvements in or relating to shoes and the like
IPC: A43B21/42
Filed: 1933-10-06
Abstract: 413,902. Rubber heels. HALL, C., 63, Calle Amberes, Mexico City. Oct. 6, 1933, No. 27572. [Classes 17 (ii) and 17 (iii).] Rubber heels 6 are detachably secured to boots and shoes by studs the heads 5 of which first increase in size and then gradually decrease, and the shanks of which are very short compared with the dimensions of the head. These studs project from the shoe or from a plate 3 secured thereto and engage directly in correspondingly shaped sockets formed in the material of the heel 6. Specification 221,170, [Class 17 (ii)], is referred to.
Patent GB-890984-A (GB)
Title: Improvements in or relating to packages
IPC: B65D51/00
Filed: 1960-08-09
Abstract: <PICT:0890984/III/1> Biologicals such as vaccines are preserved in stoppered glass containers in which at least the juncture of the stopper and container has a coating of normally crystalline vinylidene chloride polymer to exclude atmospheric penetration.  The container may enclose a high vacuum.  The stopper 16 may be of plastic or elastomeric and shaped to facilitate introduction of a syringe needle.  A metal ring 14 may be rolled to engage the container and stopper and the entire closure given a coating 18 by dipping &c.  Alternatively, the container may be coated in its entirety, providing additionally a measure of protection against shattering if the container is dropped.
Patent GB-719457-A (GB)
Title: Improvements relating to rotary compressors for elastic fluids
IPC: F04D21/00
Filed: 1950-11-13
Abstract: 719,457. Axial-flow compressors. DE HAV1LLAND ENGINE CO., Ltd., HALFORD, F. B., MOULT, E. S.. and COCKBURN, D. M. Feb. 13, 1952 [Nov. 13, 1950], No. 27652/50. Class 110(1) A supersonic compressor comprises a rotor having flow passages of convergent-divergent form, the relative velocity of the fluid flowing through at least the convergent portion of each passage being supersonic while the absolute velocity of the fluid on leaving the passages is subsonic, radial guide vanes arranged before the rotor being twisted about their radial axes to compensate for the radial variation of the tangential component of velocity of the rotor blades so as to provide a substantially constant Mach number along the inlet edges of the rotor blades. Guide vanes 14, Fig. 4, are inclined near the roots in a direction opposite to that of the rotation of the rotor 21 so as to achieve a supersonic relative velocity at entry to the rotor passages. To compensate for the increase of circumferential velocity from root to tip of the rotor blades 22, the guide vanes 14 are twisted so as to provide a substantially constant Mach number along the leading edges 26. The degree of twist may be such that the guide vanes are inclined near their tips in the direction of rotation of the rotor 21. Preferably, the chord of the guide vanes 14 increases as shown to provide an approximately constant pitch-to-chord ratio. The rotor blade thickness increases from the sharp leading edge 26, Fig. 6, up to a ridge 28 so as to provide a convergent zone in the flow passage and then decreases to the sharp trailing edge 27 so as to provide a divergent zone. To afford good diffusion, the divergent zone is longer than the convergent zone. The ridge 28 may be replaced by a smoothly curved hump. The ridge or hump may be provided on both sides of the blade. The outlet angle α may be slightly less than the inlet angle #. To assist in providing the divergent zone, the radial length of the blades 22 increases towards the outlet ends. The working fluid may pass directly to an axial-flow or other subsonic compressor, intervening guide vanes being omitted. Specification 719,479 is referred to.
Patent GB-1079342-A (GB)
Title: Field emission cathode and electron beam tube employing such cathode
IPC: H01J1/304
Filed: 1965-06-30
Abstract: 1,079,342. Field emission cathodes; electron beam tubes. FIELD EMISSION CORPORATION. June 30, 1965 [Nov. 2, 1964], No. 27653/65. Heading H1D. A field emission cathode has a predetermined crystal lattice plane oriented at the surface of a sharpened portion of the cathode, and a layer of emissive material coated on the sharpened portion which migrates to, and concentrates at, the predetermined lattice plane upon heating, the coated portion having a lower work function than uncoated portions of the cathode so that elecelectron emission is limited substantially entirely to the predetermined lattice plane. A bonding material is also present in the layer to cause the emissive material to adhere better to the sharpened portion of the cathode. The sharpened portion may be a pointed tip or a knife edge on a heating filament, or on a rod heated by induction or electron bombardment to cause the migration of the emissive material. The cathode may be of W with a 100 or possibly 211 crystal lattice plane oriented at the tip, and the emissive material may be Zr, Hf, Mg, Cs, Ba or Th, which may be bonded to the W with an intermediate layer of O, N, Cl, I or F. Also, the cathode may be of Mo, Pt, Ni, Si or diamond. In particular, a W cathode 32 having a pointed tip is exposed first to O already present in a cathoderay tube or produced by decomposing copper oxide, and then to Zr by heating a Zr-coated filament 36 arranged within control grid 34. The tube is divided into two chambers by collimating electrode 42 which may be disc-sealed through the envelope, and the pressure in the gun chamber is maintained lower by gettering material 80 provided as shown, or between two plates which together form the collimating electrode, Fig. 3 (not shown). The oscilloscope tube shown further includes a magnetic focusing lens 52 with polepieces 54, or a corresponding electrostatic gun lens; a pair of beamblanking deflection plates 56; electrostatic focusing and deflecting electrodes 62-70; and a helical resistive coating 78 for post-deflection acceleration. The cathode may also be used in electron microscopes, charge-image storage tubes and electron beam machining apparatus.
Patent GB-717335-A (GB)
Title: Improvements in the canning of non-acid fruit
Inventor: WHITTON JOHN NEWTON GOLDSMITH
IPC: A23B7/10
Filed: 1951-11-26
Abstract: In canning non-acid fruits, e.g. bananas, avocado pears, mangoes and paw-paws, which have a natural pH of 4 at least, the prepared fruit is treated with an acid solution, the surplus solution is removed and the fruit is canned in the usual manner, e.g. in syrup, brine or oil, and the canned fruit is sterilized at a temperature below 212 DEG F. The acid solution is of pH between 1.4 and 3.0, may be of an organic acid, and may be the juice of limes, lemons or grapefruits. According to an example, peeled bananas in 1/2 -inch lengths are allowed to stand for 3 minutes in a solution of citric acid previously adjusted to pH 2.4-2.6 by addition of sodium hydroxide or sodium citrate; the pieces are placed in cans, the cans are inverted to allow surplus acid to drain off and are filled up with 50 degrees Brix sugar solution; the lids are placed loosely on the cans, and they are heated for 9 minutes in an exhausted vessel maintained at 195 DEG F; the cans are then sealed, are heated for 18 minutes at 205 DEG F, and are cooled by sprays.
Patent GB-854491-A (GB)
Title: Improvements in or relating to air pressure braking systems
Inventor: BALLARD DONALD HENRY
IPC: B60T13/24
Filed: 1958-08-28
Abstract: 854,491. Fluid-pressure brakes. CLAYTON DEWANDRE CO. Ltd. Aug. 24, 1959 [Aug. 28, 1958], No. 27657/58. Class 103 (1). In an air pressure braking system a compressed-air operated servomotor 4, an hydraulic output cylinder 2 and a reaction valve 5 controlling the servomotor, are all mounted on one end 7 of a compressed-air reservoir 6 within which extends the servomotor cylinder 7a. The valve 5, controlled by a master cylinder 1, and the cylinder 2, connected to brakes 3, are attached to a supporting member 8 having a spigot portion 8a entering cylinder 7a which is formed from the central portion of end 7.
Patent GB-412460-A (GB)
Title: Explosive priming mixture
IPC: C06B43/00
Filed: 1933-10-07
Abstract: A double salt of silver with tetrazene and nitric acid is precipitated by mixing a solution of tetrazene in nitric acid with a solution of silver nitrate in water at 40 to 50 DEG  C.  A cuprous salt is similarly obtained by the use of cuprous chloride.ALSO:Metallic salts of tetrazene (also called guanylnitrosoaminoguanyltetrazene).  A double salt of silver with tetrazene and nitric acid is precipitated by mixing a solution of tetrazene in nitric acid with a solution of silver nitrate in water at 40 to 50 DEG  C.  A cuprous salt is similarly obtained by the use of cuprous chloride.  Lead dinitrophenylazide is precipitated by mixing a solution of diazodinitrophenol in acetone with a solution of sodium azide in water at 50 DEG  C., followed by the addition of a solution of lead nitrate in water and a cooling down to 15 DEG  C. when the salt precipitates out.
Patent GB-369547-A (GB)
Title: Improvements in or relating to moulding processes
IPC: B29C31/10
Filed: 1930-09-16
Abstract: In the hot moulding of condensation products and other plastic substances by the process claimed in the parent Specification, plastic masses of similar density but of different colouring may be used to obtain an article having a marbled appearance.  A vertical web which may be of thin material, e.g. that known under the Trade Mark Cellophane and which bears a design, may be placed in the mould, so as to be embedded in the final transparent or translucent product.
Patent GB-983358-A (GB)
Title: Improvements in or relating to garments
IPC: A41D27/02
Filed: 1963-12-03
Abstract: 983,358. Heat insulating garments. E. I.  WEISS. Dec. 3, 1963, No. 47745/63. Heading A3V. A heat insulating garment comprises a lining of flexible cellular foam material adhering to a backing, the foam material being slit in at least two directions so as to form mutually independent segments the slitting extending to the backing. The interlining 13 comprises a fabric backing 15 which may be elastic and to which adheres foam plastic material 16. The foam material has a series of parallel slits 17, 18 extending in two directions. The garment may have an inner lining 12.
Patent GB-948075-A (GB)
Title: Improvements in gaseous or liquid fuel burners and methods of controlling them
IPC: F23D11/00
Filed: 1960-08-10
Abstract: 948,075. Burners. GOLD STAR OELFEUERUNGS-ORGANISATION G.m.b.H. Aug.10, 1960 [Aug. 11, 1959; March 21, 1960], No. 27763/60. Heading F4T. A burner for gaseous or liquid fuel comprises a fuel nozzle 16 concentrically mounted in a converging air nozzle 2 and an axially adjustable, annular member 3 mounted in the space between the fuel and air nozzles and having a diverging outlet. The bore of the annular member supports a whirling plate 4 having a central opening and a plurality of inclined radial slots. The annular member is secured by spacers 5 to a brush 6 adjustably secured by a screw 15 to the fuel pipe 7. A rod 9 is secured to the fuel pipe and extends through the rear wall of the burner casing 1. An adjusting nut 8 on the rod is held between a stirrup 10 and the rear wall. The fuel pipe passes through an elongated aperture 19 in the burner casing and carries a plate 20 covering the aperture 19. A pointer 13 on the fuel pipe moves over a scale 12. Air is supplied through a port 21. An oil burner, Fig. 4 (not shown), comprises a casing having a lockable cover and containing a blower, an ignition transformer, a flame detector and a control device. The burner air nozzle projects from the casing and the nut for adjusting the position of the fuel nozzle and the annular member disposed between the fuel and air nozzles is covered by a hinged hood secured by a screw sealed by a lead wire. The burner is ignited by electrodes.
Patent GB-900301-A (GB)
Title: Improvements in electrical apparatus for performing fine adjustment of the rams or plungers of presses
IPC: G05B19/21
Filed: 1959-08-14
Abstract: 900,301. Control of motors. SCHULER A.G., L. Aug. 14, 1959 [Aug. 23, 1958], No. 27850/59. Class 38 (3). Fine adjustments of the ram of a press are effected by an electric motor to which is coupled an impulse transmitter for measuring the amount of movement of the ram, and an impulse counting device is provided to disconnect the motor after the ram has travelled a predetermined distance. An impulse transmitter 5 has separate contacts for the two directions of travel and transmits one impulse per revolution of a shaft forming part of the motor drive. A counting device 6 indicates the position for the last adjustment of the ram, whilst a differential counting mechanism 7 is manually set for the required further adjustment. Closure of switch 11 energizes relay D1, whereupon actuation of one of the push-buttons 9 energizes relay C1 which completes a self-holding circuit. After the relay C1 has closed, the relay C3. is energized and the motor starts, a contact on the relay C3 opening the circuit to the push-buttons, and a contact. on the relay C1 preventing operation of the reverse relay C2. When the mechanism 7 is counted down to zero, a tripping device G2 opens contacts g2 and relays C1, C3, drop out. The motor has an automatic brake and is stopped immediately upon disconnection of the supply current. Further manual adjustment may be made by opening switch 11 to de-energize the relay D1, so disconnecting the counting mechanism 7. The contacts g2 are closed manually, so that operation of the motor is effected by actuating one of the push-buttons 9 with simultaneous operation of a switch 12.
Patent GB-489026-A (GB)
Title: Processes for the condensation of organic metal derivatives with acylated compounds
IPC: C07C59/185
Filed: 1936-10-14
Abstract: Esters of aliphatic carboxylic acids having four or less carbon atoms in the molecule are heated with alcoholates, phenolates or organic metal compounds in which a hydrogen atom attached to carbon is substituted by the metal whereby condensation occurs, the metal salt of the lower aliphatic carboxylic acid being split off.  According to a modification, hydroxy fatty acids acylated at the hydroxy group with aliphatic, aromatic, alicyclic or heterocyclic carboxylic acids are condensed with alcoholates or organic metal compounds in which a hydrogen atom attached to carbon is substituted by the metal.  The metal compounds may contain reactive groups such as carboxyl, carbonyl or sulphonic groups or other groups containing sulphur or nitrogen.  In examples: (1) sodium butylate is heated with acetylated octanol-2, acetylated ricinoleic acid and terpenylacetate; (2) sodium amylate is heated with acetylated cetyl alcohol; (3) sodium is dissolved in butyl alcohol and reacted with terpineol and the resulting sodium compound heated with terpenylacetate; (4) the sodium compound of glycerine is heated with acetylated wool fat alcohol and with acetylated hydroquinone; (5) acetylated castor oil fatty acid is heated with the sodium compound of malonic ester, sodium phenolate and with the sodium compound of glycerol; (6) the ether-fatty acid obtained from acetylated castor oil fatty acid and sodium butylate is saponified, condensed with glycolchlorhydrin or glycerol chlorhydrin and sulphonated to give a wetting agent.  The sodium soaps of the ether-fatty acids may themselves be sulphonated and the carboxylic group esterified. The ether-fatty acids may also be condensed with hydroxyethane sulphonic acid or taurine to give textile assistants. The condensation of sodium malonic ester with acetylated cellulose, starch and glucose is mentioned.  Samples have been furnished under Sect. 2 (5) of products obtained by condensing the following components; (a) diethyloxalate and sodium butylate; (b) acetylated castor oil fatty acid and sodium malonic acid ester; (c) terpenyl acetate and sodium oleylate; (d) the sodium compound of fenchyl alcohol and oleylacetate; (e) cetyl acetate and sodium malonic acid ester; (f) bornyl acetate and sodium malonic acid ester; (g) butyl acetate and sodium acetyl acetic acid; (h) phenylacetate and sodium benzylate; (i) benzoylated castor oil fatty acid and sodium ethylate; (j) sodium butylate and the lactic acid ester of castor oil fatty acid; (k) sodium butylate and acetylated secondary octyl alcohol; (l) sodium compound of glycerol and acetylated castor oil fatty acid; (m) sodium butylate and acetylated castor oil fatty acid; (n) sodium phenolate and acetylated castor oil fatty acid.
Patent GB-464816-A (GB)
Title: Improvements in or relating to stopping-place indicators for vehicles
IPC: B60R7/04
Filed: 1935-10-18
Abstract: 464,816. Moving signs. AMBI-BUDD PRESSWERK GES. Oct. 18, 1935, No. 28004/36. Divided out of and addition to 458,875, under which a Specification was laid open to inspection under Sect. 91 of the Acts, April 28, 1937. [Class 3 (i)] The stopping-place indicator described in the parent Specification is provided with a casing 2a, preferably of stout sheet metal, extending beyond one or both of the end plates 1, 11 in which the band rollers 4, 4<1> are journalled, so as to enclose and protect the electric motor 7 and gearing 14, 16 mounted on the outer side of one or both end plates.
Patent GB-343528-A (GB)
Title: Improvements in or relating to the preparation of material containing vitamin d.
IPC: A23L5/30
Filed: 1929-09-14
Abstract: In the production of vitamin D by illuminating ergosterol or a solution thereof with artificially produced ultra-violet radiation, the radiation of wave-lengths of the order of 2700A. DEG  and below is cut off by filtration, and the product is withdrawn before appreciable destruction of the vitamin takes place. Radiation of wave-length more than 3000A. DEG  is also preferably suppressed.  The radiation may be derived from a mercury vapour lamp.  The undesirable rays may be removed by means of a filter consisting of a short silica cylinder closed by silica plates and containing a solution of benzene.  The ergosterol may be dissolved in ether or hexane.  It is found to be most suitable to stop the irradiation when about 60 per cent of the ergosterol has been transformed, as indicated by a test such as precipitation with digitonin.  Suitable apparatus for the irradiation is described. Specifications 296,093, [Class 2 (iii), Dyes &c.], 310,802, [Class 49, Food &c.], and 314,942, [Class 2 (iii), Dyes &c.], are referred to.ALSO:In the production of vitamin D by illuminating ergosterol or a solution thereof with artificially produced ultra-violet radiation, the radiation of wavelengths of the order of 2700 A. DEG  and below is cut off by filtration, and the product is withdrawn before appreciable destruction of the vitamin takes place. Radiation of wavelength more than 3000 A. DEG  is also preferably suppressed.  The radiation may be derived from a mercury vapour lamp.  The undesirable rays may be removed by means of a filter consisting of a short cylinder closed by silica plates and containing a solution of benzene in hexane or alcohol.  The ergosterol may be dissolved in ether or hexane.  It is found to be most suitable to stop the irradiation when about 60 per cent of the ergosterol has been transformed, as indicated by such a test as precipitation with digitonin.  Specifications 296,093, [Class 2 (iii), Dyes &c.], 310,802, [Class 49, Food &c.], and 314,942, [Class 2 (iii), Dyes &c.], are referred to.
Patent GB-1204397-A (GB)
Title: Improvements relating to suspensionary means for curtains
Inventor: EVANS ROBERT WILLIAM
IPC: A47H13/04
Filed: 1968-06-13
Abstract: 1,204,397. Suspending curtains. FREDERICK W. EVANS Ltd. 22 May, 1969 [13 June, 1968], No. 28053/68. Heading A4B. A curtain suspension device comprises in combination an elongated supporting member 10 of moulded plastics in combination with a spring metal wire hook 17 having one part 19 for engaging a curtain runner and a U-shaped part 18 for engaging the supporting member 10, the latter having a flat attachment part 11 through which the member 10 is stitched to a curtain top and an integral U-section trough part 12 formed with a plurality of spaced apertures 13 selectively engageable by the hook part 18 which has a base 25 which engages an edge of one aperture 13 and a projection 22 which snaps into an adjacent aperture 13.