baber/WOPTO huggingface dataset:
Patent GB-569529-A (GB)
Title: Improvements in the manufacture of esters of ª‰-2-furylacrylic acids
IPC: C07D307/56
Filed: 1943-06-25
Abstract: Esters of b -2-furylacrylic acids are made by condensing 2-furfuraldehyde or a derivative thereof bearing alkyl or halogen substituents in the furan nucleus, with an ester of the formula RCH2.COOR1, wherein R represents hydrogen or an aryl, alkyl, 2-furyl, cycloalkyl or alkoxy radical and R1 represents the non-hydroxylic portion of a monohydric aliphatic or cyclo-aliphatic alcohol, in the presence of an alkali metal alcoholate at temperatures of at least 20 DEG  C.  Sodium methylate is used as condensing agent in the examples and the use of alcoholates derived from potassium, caesium, rubidium and lithium and from ethanol, propanol, isopropanol, butanol, secondary butanols, hexanol and cyclohexanol is also specified.  In the examples, methyl acetate and furfural give methyl-b -(2-furyl)acrylate, methyl acetate and 5-methylfurfural give methyl b -(5-methyl-2-furyl)acrylate, methyl acetate and 5-chlorofurfural give methyl b -(5-chloro-2-furyl)acrylate, ethyl phenylacetate and furfural give ethyl a -phenyl-b -(2-furyl)acrylate and methyl 2-furylacetate and furfural give methyl a .b -bis-(2-furyl)acrylate. The corresponding acids are made by saponification and acidification of these esters.  Other furfural derivatives specified are 5-bromo-, -tertiary butyl-, -ethyl- and -isopropyl-furfurals, 4-tertiary butyl-, -methyl-and -isopropyl-furfurals, 3.4-, 3.5- and 4.5-dimethylfurfurals and 3.4.5-trimethylfurfural; and other esters specified are ethyl, n-propyl, isopropyl, n-butyl, isobutyl, cyclohexyl and 2-methoxyethyl acetates, ethyl propionate, methyl butyrate, ethyl 2-methyl-butyrate, methyl phenylacetate, ethyl ethoxyacetate and cyclohexylacetates, butyl valerate and isobutyl caproate.  A continuous process is also described.  Excess of the ester or alcohol solvents such as methyl alcohol may be used as media for the reaction and they can be recovered by distillation and recycled in the process.  Inert diluents such as benzene or gasoline retard the reaction.  Esters of b -(2-furyl)acrylic acid may be copolymerized with various unsaturated polymerizable compounds.  b -(2-Furyl)acrylic acid and its methyl ester are useful for modifying drying oils.
Patent GB-576825-A (GB)
Title: Improvements in wireless beam systems
IPC: H01Q19/12
Filed: 1940-06-13
Abstract: 576,825. Directive wireless signalling. DOWSETT, H. M June 13, 1940, No. 10295. [Class 40 (v)] A hollow cylindrical or conical beam which is polarized in every plane passing through the axis X, X<1> of the beam, is projected from a dipole AB situated at or near the focus of a paraboloidal reflector YCY<1> and having its length along the axis XX<1> of the reflector, whose focal length must be at least equal to half a wavelength. When the centre O of the dipole is at the focus, plane waves are projected and the energy is mainly concentrated in a hollow cylindrical beam, but a weak conical field is formed by unreflected radiation together with radiation diffracted at the aperture Y, Y<1>. Owing to the capacitance of the dipole, its effective length is reduced and the wave-front before reflection is not truly spherical, with the result that if an ordinary paraboloidal reflection is used, the wave front of the reflected waves is not truly plane and interference results. To compensate for the distortion of the wave-front before reflection, the reflector is designed as if it were produced by the rotation of a parabola about a hollow cylinder, one generator of which is shown at x, x<1>, Fig. 4, instead of about the axis X, X'. The apex of the reflector is cut away at E, C. If a hollow slightly conical beam is desired, in place of a hollow cylindrical beam, the reflector is produced by the rotation of a parabola about a hollow cone. Specifications 314,310, [Class 40 (v)], 408,837 and 576,828 are referred to.
Patent GB-750159-A (GB)
Title: Improvements relating to the treatment of petroleum distillates
IPC: C10L1/183
Filed: 1953-04-15
Abstract: Petroleum distillates which pass the B.S.I. copper strip corrosion test are prepared from distillates which fail to do so after hydrocatalytic desulphurization and redistillation, by adding a small proportion of a phenolic compound.  Compounds referred to are tar acids from the distillation of coaltar, tricresol and sterically hindered phenols such as 2, 4 dimethyl-b -tertiary-butylphenol. Distillates referred to are solvent-naphthas.
Patent GB-1411595-A (GB)
Title: Phosphate coated regenerated cellulose film
IPC: C08J7/048
Filed: 1972-09-21
Abstract: 1411595 Coated regenerated cellulose film E I DU PONT DE NEMOURS & CO 21 Sept 1972 [22 Sept 1971 19 July 1972] 10300/75 Divided out of 1411592 Heading B2E A regenerated cellulose film is provided with a continuous non-crystalline, water vapour and gas-barrier coating comprising aluminium orthophosphate, in amount of at least 0.2 g/m<SP>2</SP>, wherein the atom ratio of aluminium to phosphorous is 2.3-0.5. Up to 50% of the aluminium atoms in the orthophosphate may be replaced by tin, titanium and zirconium, and up to 20% of the aluminium atoms in the orthophosphate may be replaced by zinc, chromium or magnesium atoms provided that if tin, titanium or zirconium atom replacement also exists then only a total of up to 50% of the aluminium atoms are replaced. The coated film may also be provided with a sealable polymeric topcoat. The film may be coated by applying a dispersion preferably prepared by first dissolving in the desired medium a source of aluminium ions, separately dissolving a source of phosphorous ions and then combining the solutions to form the orthophosphate. Metals other than aluminium can be added e.g. as halides of the metal. When sources of metal are used that result in a formation of chloride ions the chloride ions are removed e.g. by dialysis or by means of an ion exchange resin. The coating compositions may also contain additives such as resins that improve the wettability and adhesion of the coating e.g. melamine-formaldehyde resins, urea-formaldhyde resins, polyethylene imine, and amino acids such as glycine and alanine alone or in combination. The compositions can be applied by kiss coating, doctor rolls, gravure rolls, immersion, spraying. The film may be pretreated by flame, electrical discharge treatment, or acid or alkaline etching. The coated film can be primed and a sealable topcoat of polyethylene, vinylidene chloride polymers and copolymers and ethylene-vinyl acetate copolymer applied. Priming agents include silanes, polyurethanes, aqueous solutions of melamine-formaldehyde resins and aluminium chlorohydroxide. The top coating can be applied by solvent coating, melt extrusion, or hot lamination of a preformed film of the heat sealable polymer.
Patent GB-1187354-A (GB)
Title: Process for Dyeing Mixtures of Cellulosic and Polyester Fibres
IPC: D06P3/82
Filed: 1968-03-04
Abstract: 1,187,354. Dyeing polyester/cellulose mixtures. FARBWERKE HOECHST A.G. 4 March, 1968 [3 March, 1967], No. 10361/68. Heading D1B. Mixtures of cellulose fibres and fibrous materials of linear polyesters are dyed in a single bath with a reactive dye and a dispersion dye by treating the mixture at 20C-80C in a dyebath containing alkali in addition to the above dyes followed by adjusting the pH to 3.5 to 6.0 by adding free acid and'completing the dyeing at 95C-140C. Reactive dyes which contain a vinylsulphone group or a group capable of forming such a group in alkaline media e.g. a sulphonic acid ester or a thiosulphonic acid ester of #-hydroxyethylsulphone are preferred especially those of the azo, anthraquinone and phthalocyanine types. Preferred disperse dyes are azo and anthraquinone dyes. Carriers e.g. o- and p-phenylphenol, and alkyl esters of benzoic and salicylic acids may be used.
Patent GB-777768-A (GB)
Title: Composition material for brake shoes
IPC: C08L61/10
Filed: 1955-04-12
Abstract: A composition suitable for making brake shoes for railway vehicles consists of: ..parts by ..weight .Phenol-formaldehyde resin.8-15 .Cast Iron chips.60-75 .Asbestos fibre.12-20 .Unvulcanized powdered Rubber. .(natural or synthetic).4-10 .Carbon black.0-10 The cast iron chips are such that they will pass through a screen with 1/4 in. mesh but not through one with 1/16 in. mesh.  The ingredients are blended dry, formed in a mould under pressure, preheated to soften the resin, e.g. at 200 DEG -250 DEG F. for 30 minutes in an oven, or by, dielectric heating for 10 minutes at 200 DEG -300 DEG F. and then placed in a mould of the desired shape which is heated to 300 DEG -340 DEG F. and cured and compacted under pressure.
Patent GB-1113841-A (GB)
Title: Cable termination for a high voltage power cable
IPC: H02G15/068
Filed: 1966-03-09
Abstract: 1,113,841. Cable terminations. ELASTIC STOP NUT CORPORATION OF AMERICA. 9 March, 1966 [16 April, 1965], No. 10446/66. Heading H2E. A tube 24 of electrically conductive elastomerio material is used to adapt conventional high voltage power cable stress cones, which are manufactured for terminating cables having no bedding tape, so that they may be used for terminating cable that is provided with bedding tape. The cable coverings are stripped back in steps, as shown. The adapter tube 24 is a snug fit over the conductive bedding tape 14, and is in electrical contact therewith, so that the terminal end of the tape is held void free over the cable insulation 12. The electrically conductive elastomeric outer cone 36 of the stress cone, which is moulded to insulating elastomeric inner cone 32, fits over the tube 24 in waterproof and electrical contact. The metallic shield 16 between the bedding tape 14 and protective shield 18 is earthed by a wire 30 to disipate charge that accumulates on the bedding tape. In another embodiment, Fig. 2 (not shown), the cable is lead sheathed and has bedding tape stripped back to the outer sheath, and the tube 24 fits snugly over the insulation 12 and has an enlarged sleeve portion at one end which fits over the sheath and which has an inwardly tapering shoulder to make electrical contact with the terminal rim of the bedding tape and sheath and to exclude any trapped air.
Patent GB-774494-A (GB)
Title: A taximeter having improved means for transmitting rotary motion
Inventor: HAUPT WILHELM
IPC: G07B13/00
Filed: 1954-05-25
Abstract: 774,494. Taximeters. KIENZLE APPARATE GES. April 12, 1955 [May 25, 1954], No. 10483/55. Divided out of 774,492. [Class 106 (3). The taximeter driving gear wheel 77 is driven by a sun-wheel 68 driven from the vehicle transmission by a coupling sleeve 67 via one of two planet gears 70, 71 mounted on an arm 74 pivotable about the axis of the wheel 68 between two stops 75, 76. According to the direction of drive communicated to the sunwheel 68 the arm 74 pivots to bring either the planet gear 71 into engagement with the gear 77 or to bring the planet gear 70 into engagement with an intermediate idler gear 78 in mesh with the gear 77, so that the gear 77 is always driven in the direction of the arrow. The planet wheel 70 is spring-urged into frictional contact with the arm 74 to impart the necessary pivoting torque thereto.
Patent GB-1300859-A (GB)
Title: Overboot
IPC: A43B3/16
Filed: 1971-04-21
Abstract: 1300859 Overboots RUBBERFABRIEK VREOESTEIN NV 21 April 1971 [21 April 1970] 10513/71 Heading A3B An overboot 1 made of rubberised fabric includes a tubular leg portion 2, an insole (not shown) and a tread 3 having an upturned marginal portion which covers the seam between the insole and the leg 2 and which is vulcanized to the leg 2, the overboot also including strips 7 which are secured to the leg 2 over part of their width 9, the portions 10 of the strips 7 loose from the leg being provided with closing elements. The seams of the leg 2 are covered by rubber strips vulcanized thereto, e.g. the strip 5 at the front of the leg 2. The strips 7 are curved towards the toe of the overboot and the closing elements may comprise lacing 12 passing through eyelets 11 in the strips 7 and through an eyelet 15 in an extension 14 of the toe cap 13. In use, when the lacing is tightened, the leg 2 is folded so that the strip 5 fills the gap between the strips 7 and the toe of the overboot is pulled against the inner footwear by the lacing passing through eyelet 15. In a modification the eyelets 11 may be replaced by hooks (not shown) or other colsing elements, e.g. buckles.
Patent GB-842849-A (GB)
Title: Improvements in or relating to root crop-harvesting machines
Inventor: HAUSER-BUCHER WALTER
IPC: A01D15/04
Filed: 1959-03-26
Abstract: 842,849. Root-crop harvesters. BUCHERGUYER AKTIENGESELLSCHAFT MASCHINENFABRIK. March 26, 1959, No. 10518/59. Addition to 824,077. Class 6(3). A root-crop harvesting machine includes two scoops 10, 11 arranged one behind the other with the rear of the front scoop 10 overlapping the front of the rear scoop 11, each scoop comprising a grating formed of longitudinally extending bars 14, the front scoop being integral with a share 16 and having a tie-bar 17 across the rear end of its bars, the two scoops being oscillable about substantially vertical shafts 12 in out-of-phase relation. The front of each scoop consists of a U-shaped member 15. The mounting and means for oscillating the scoops are as described in the parent Specification.
Patent GB-809183-A (GB)
Title: Improvements in or relating to processes for influencing the molecular structure of plastics by irradiation, more especially with electrons
IPC: G21K5/10
Filed: 1957-04-01
Abstract: <PICT:0809183/III/1> The molecular structure of plastics is influenced by treating the plastic in the form of strips, sheet, or other shape to irradiation in a high vacuum in which the electron source is disposed.  A high energy radiation source is used whereby the sheet is passed quickly through the radiation zone, and the gases generated are released outside said zone.  It is stated that side chains of polymer structure are disrupted forming 3-dimensional cross-linkages, but at high dosages, main chains are also broken, giving a brittle glass-like product.  A suitable apparatus comprises a main vacuum chamber 12 having an electron source 19, and fore- and after-vacuum chambers 13, 14.  A strip of plastic 10 passes through slots 15, 18 through the vacuum locks, the slots being sealed against external air pressure.  Pumps operating at 10-4mm. Hg are connected to the vacuum chambers.  The electron stream is focused by an aperture 20 to pass through an accelerator 11 and then through the plastic strip which scatters the electrons, and these are collected in a retarder collector mounted below the strip and consisting of a number of chambers 1 ... 7 maintained at potentials which decrease to 4 which is at the lowest potential.  A Lenard window is avoided since the radiative source and the plastic strips are in the same vacuum space, thus avoiding power losses.  The plastic strip is preferably precooled before entry; the process may be applied to elastomers or polymers.  Strips up to 1 metre wide may be treated at the rate of 1 metre per second.
Patent GB-490559-A (GB)
Title: Improvements in or relating to an adjustable desk
IPC: A47B39/02
Filed: 1937-04-14
Abstract: 490,559. Adjustable desks. MAJOR, P. C. April 14, 1937, Nos. 10628 and 34709. [Classes 52 (iii) and 52 (v)] An adjustable desk comprises a pair of spaced pillars 21 with feet 20, members 22 slidably adjustable on the pillars and carrying the desk top board 25 by pivots 31, a slide 37 adjustable for height on each of the sliding members 22 and a pair of links 41 each of which is connected at its opposite ends to a side of the board and to the adjacent slide 37. The pillars 21 are of square section and the slidable members 22 comprise square sleeves carrying at the top castings 23 forming bearings for the board and supporting inkwells 34, springs 80 being interposed between the castings 23 and the tops of the pillars. Each pillar is provided with a series of holes for engagement by a spring-pressed pin 29 on the sleeve. The board 25 is supported on a square section tube 36 carrying the pivots 31 and channel members 33 into which fit the two halves of the board. Each sleeve 22 has slidable upon it a pair of collars 37, 38 lockable in any position by spring-pressed pins 39 engaging holes in the sleeve, and the links 41 are releasably pivoted by pins 43 to the collars at their lower ends so that by releasing the links from the collars the board can be reversed. The spring pins may be retainable in the withdrawn position. A tip-up shelf 77 is hinged at 47 to the lower collars 37 and supported in the position of use by links 45 engaging flanges 46 on the collars. A fixed shelf may be supported between the two upper collars. Fig. 6 shows a modification in which the sleeves 22 are connected by cross-bracing 52 and have each a vertical projecting rib 53 on which is mounted a slide 54 carrying pivotally a link 41 the upper end of which has an inwardly-projecting pin 55 which fits in a hole 56 in the side of the board and is held therein by a spring catch 57 releasable by a finger grip 58. A pair of holes 56 is provided in each side of the board so that it can be reversed. The rib 53 has a series of indentations 61 engaged by a spring catch on the slide. Friction between the slidable parts is minimized by teak inserts 40, 27, which, in the form shown in Fig. 6, are carried by removable panels 51 on each side of the sleeves 22 and within collars 70 at the lower ends of the sleeves. A tray 66 is pivoted to one of the sleeves, and held in horizontal position by a bracket on its under side. Ink-wells 69 are carried by the panels 51. The cross-bracing between the sleeves may be replaced by a locker. The board may be provided with hinged extension flaps. Specification 4574/00, [Class 98], is referred to.
Patent GB-1211223-A (GB)
Title: Electrical power supplies
Inventor: RACKOWE MILES DAVID ADAM BULKY
IPC: H02J9/06
Filed: 1967-03-07
Abstract: 1,211,223. Auxiliary supply sources. COUTANT ELECTRONICS Ltd. 31 Jan., 1968 [7 March, 1967], No. 10644/67. Heading H2H A D.C. supply obtained from an A.C. source by way of a rectifier and provided with a filter capacitor is maintained, should momentary failure of the A.C. source occur, by the discharge of a further capacitor which may either assist or take over from the filter capacitor thereby ensuring continuance of the D.C. supply during the failure. A main D.C. supply obtained by means of a rectifier from an A.C. source is provided with a filter capacitor CR which potential across which varies about a mean value as it charges and discharges during operation. A second capacitor C2 connected to the main D.C. terminals by way of a resistor R2 charges up to the mean potential of the capacitor CR. An auxiliary D.C. supply is formed by a capacitor C1 which is normally charged to a higher potential than the potential of the main D.C. supply and, if desired, this auxiliary D.C. supply may be obtained from the same A.C. source as is the main D.C. supply. Should a failure of the A.C. source occur the potential of the cathode and gate of a controlled rectifier SOR1 become such that the rectifier becomes conductive whereupon the charge on the capacitor C1 is dumped into capacitor CR to maintain the function of capacitor CR during the failure. When the A.C. source is restored the controlled rectifier SCR1 becomes non-conductive thereby allowing the capacitor C1 to become charged once again. In a second embodiment the arrangement is such that upon a failure of the A.C. source the capacitor CR is isolated from the main A.C. source and its function taken over by the capacitor C1.
Patent GB-718458-A (GB)
Title: Improvements in electric brakes, in particular for vehicles
Inventor: BESSIERE PIERRE ETIENNE
IPC: F16D65/78
Filed: 1952-04-28
Abstract: 718,458. Electromagnetic brakes. ELECTROMECANIQUE DE L'AVEYRON. April 28, 1952, No. 10660/52. Class 103(1) [Also in Group XXXV] A vehicle eddy current braking device comprises a radially grooved rotor located between two electromagnets the energizing current of which is varied by a rheostat controlled by a wheel brake pedal 10 so that the rotor inertia is reduced as the pedal 10 is moved forward through the angle COD. As the pedal 10 is first moved through the angle BOD the eddy current braking device produces a moderate braking action and as the pedal 10 is moved through the angle COD the effect of the eddy current braking device becomes smaller until finally, when the pedal is in the angle DOE, it is completely ineffective, the pedal 10 being then near the end of its displacement corresponding to maximum application of the wheel brakes.
Patent GB-314613-A (GB)
Title: Improvements in and relating to back bridges for the grates of furnaces
IPC: F23M3/00
Filed: 1928-04-11
Abstract: 314,613. Gibson, W., and Pocock, E. J. April 11, 1928. Firebridges of the type comprising a series of metal firebars 7 having front portions extending at an angle to the grate bars are provided with a crown 17 of firebrick having air supply passages 19 leading upwards from a groove 20 formed in the underside of the crown and registering with passages 21 extending through the upper portions of the bridge bars. As shown, the bridge bars are reversible, open at the underside 8 and front 9 but closed at the rear by an air sealing plate 11, and are secured on the bearer plate 13 by a wedge 14. An opening 15 in the bearer plate allows air from the ash-pit to pass to the bridge. The firebricks forming the crown 17 have dovetailed projections 18 fitting in corresponding recesses 16 on the upper portions of the bridge bars, and the bricks may be connected together and have apertures formed between them. At the back the crown overhangs the rear of the bridge bars as at 22 to protect the rear surface from the flames. Non-reversible bars may be used, the rear face of the bridge then being vertical. In applying the invention to existing furnaces parts such as bearers for the grate bars may be utilised to support the bridge bars.
Patent GB-528960-A (GB)
Title: Improvements in automatic multiple spindle turret machines for turning, drilling, tapping and the like
IPC: B23B9/02
Filed: 1939-02-03
Abstract: 528,960. Lathes. CONE AUTOMATIC MACHINE CO., Inc. Feb. 3, 1939, No. 10734/40. Convention date, Feb. 4, 1938. Divided out of 528,694. Drawings to Specification. [Class 83 (iii)] An automatic multi-spindle turret lathe has a hollow column extending from one end of the bed and enclosing shafts and gearing for driving the work spindles in the turret and also for actuating the tools, which include end-working tools, a removable cover being provided on the column for giving access to the gearing. The machine embodiment is described in Specification 528,694. Specification 144,329, [Class 83 (iii)], also is referred to.
Patent GB-1293454-A (GB)
Title: Process for the preparation of cubically crystallised zirconium dioxide
Inventor: DENEKE KLAUS
IPC: C04B35/48
Filed: 1970-03-05
Abstract: 1293454 Cubically crystalline zirconium dioxide DYNAMIT NOBEL AG 5 March 1970 [6 March 1969] 10738/70 Heading C1A A process for the preparation of cubic ZrO 2  comprises separating particulate monoclinic ZrO 2  from a ZrO 2 /SiO 2  mixture by flotation, treating the monoclinic ZrO 2 , either whilst moist or after drying, with hydrofluoric acid to reduce the SiO 2  content, mixing the monoclinic ZrO 2  with 6À5 to 13 mol. per cent of one or more of CaO, MgO, Y 2 O 3 , ThO 2  or Ce 2 O 3  in particulate form or with a particulate substance which during heating forms the oxide, e.g. hydroxides, carbonates, bicarbonates, oxalates or acetates and heating the mixture to from 1000‹ to 2000‹ C. to effect a solid state reaction to form cubic ZrO 2 .