baber/WOPTO huggingface dataset:
Patent GB-1214594-A (GB)
Title: Stabilised polyester resins
IPC: C08K5/41
Filed: 1969-03-19
Abstract: 1,214,594. Stabilized polyester resins. FMC CORP. 19 March, 1969 [19 April, 1968], No. 14419/69. Heading C3R. A linear polyester (especially polyethylene terephthalate) is stabilized with a compound of the formula wherein R 1  and R 2  are unsubstituted alkyl groups, unsubstituted phenyl groups or phenyl groups substituted in the para position with chlorine, hydroxyl or C 1-6  alkyl radicals. The unsubstituted alkyl groups preferably contain 1-10 carbon atoms. The sulphone is preferably present as 0À01 to 0À5% by weight of the composition.
Patent GB-646753-A (GB)
Title: Manufacture of dyed leather
IPC: C09B35/42
Filed: 1948-05-28
Abstract: Leather is dyed with a polysulphonated trisazo dyestuff produced from one mol. of a tetrazotized 4,41-diaminodiphenyl compound, one mol. of an o-hydroxy carboxylic acid of the benzene series and one mol. of a monoazo dyestuff of the formula <FORM:0646753/IV (c)/1> in which R is hydrogen or a methyl group and A is the radical of an aminobenzene- or aminonaphthalene-polysulphonic acid. Specified 4,41-diaminodiphenyl compounds are benzidine, 3,31- or 2,21-dimethyl- or dichloro-4,41-diamino diphenyl, and 3,31-dimethoxy-4,41-diaminodiphenyl; specified o-hydroxy carboxylic acids are salicylic acid and o- and m-cresotic acids; and specified polysulphonic acids suitable for making monoazo dyestuffs of the above formula are 1-aminobenzene-2,5-, 2,4- and 3,5-disulphonic acids, 2-amino-1-methylbenzene-3,5-disulphonic acid, 4-amino-1-methylbenzene-2,5-disulphonic acid, 2-aminonaphthalene-4,8-, 6,8-and 5,7-disulphonic acids, and 1-amino-naphthalene-3,6,8-trisulphonic acid.  An example is given in which chrome-tanned leather is dyed with the dyestuff salicylic acid\sMbenzidine-->m - diaminobenzene\sM1 - aminonaphthalene - 3, 6, 8 - trisulphonic acid first in a neutral bath and then in presence of formic acid.
Patent GB-666178-A (GB)
Title: Improvements in or relating to systems for changing the frequency of electrical oscillations
IPC: H04B7/17
Filed: 1949-05-30
Abstract: 666,178. Frequency changing circuits; radio signalling. GENERAL ELECTRIC CO., Ltd., BRIDGES, D. H., and MACARA, J. S. May 30, 1950 [May 30, 1949], No. 14463/49. Classes 40 (v) and 40 (vi). A signal is applied to a first mixer, together with a first locally generated oscillation of the same order of frequency, the lower sideband being selected and fed to a second mixer together with a second locally generated oscillation of the same order of frequency as the original oscillation to produce the desired output. The two locally generated oscillations are different harmonics of a single oscillator. The system is particularly applicable to a repeater station in a radio link. An incoming signal 1 (1000 Mc/s.) is applied to a mixer 2 together with local oscillations (960 Mc/s.) from multiplier 4. The lower sideband is fed through filter 6 and amplifier 7 to a second mixer 8 together with local oscillations (1000 Mc/s.) from multiplier 9. The resulting upper sideband (1040 Mc/s.) is fed out through filter 10. A stabilized master oscillator 5 feeds a common multiplier 3 supplying the multipliers 4, 9. The multipliers preferably comprise a series of multiplying stages, each having a factor of five or less. A second repeater station may comprise a similar installation with the multipliers 4, 9 interchanged.
Patent GB-443674-A (GB)
Title: Improvements in and apparatus for the manufacture and production of oleum
IPC: C01B17/80
Filed: 1935-05-18
Abstract: <PICT:0443674/III/1> In producing oleum by the absorption of sulphur trioxide in sulphuric acid, the downwardly flowing acid is brought into contact with gases comprising sulphur trioxide at first in a finely divided state without cooling and finally while cooling by contact with the inner surface of a bundle of vertical cooled tubes. As shown, sulphuric acid enters the absorber at g and passes down first through a column of ring-shaped filler bodies d resting on some layers of balls c and then through vertical externally cooled tubes b.  Gases containing sulphur trioxide are introduced at h.  The spent gases leave at k while the oleum formed leaves the tower at i.  The tubes b are cooled by cooling liquid circulating through the chamber n.  The tower and the supporting grate for the filler bodies may be lined with ceramic material.  Cooling water or brine which has been treated to make it non-corrosive may be circulated through the chamber n, this cooling medium being itself cooled by means of available water in another cooler.
Patent GB-487097-A (GB)
Title: Improvements in depilating hides or skins
IPC: C14C1/06
Filed: 1937-05-28
Abstract: 487,097. Depilating skins. WALLERSTEIN CO., Inc. May 28, 1937, No. 14832. Convention date, June 26, 1936. [Class 76] Hides and skins are depilated by treatment with an alkaline material, e.g. lime or caustic alkali, with the addition of hydrosulphites, sulphoxylates or their organic derivatives. Additional agents such as amines, sulphides of sodium and arsenic and proteolytic enzymes may also be present, e.g. after treatment in a solution of caustic soda and sodium formaldehyde hydrosulphite or sulphoxylate the bath may be partially neutralized and a bacterial enzymatic solution added. Antiseptic agents may be added to the baths.
Patent GB-922101-A (GB)
Title: Improvements in or relating to auto-silos
Inventor: SHAW CASTO FERNANDEZ
IPC: E04H6/28
Filed: 1960-04-28
Abstract: 922,101. Mechanical garages. ESPROGA SOCIEDAD LIMITADA. April 28, 1960, No. 14871/60. Class 78 (4). Parking bays 5 (Fig. 2), arranged radially on each floor of a multi-floor garage are reached by means of a lift 10 which delivers to turntables 8 mounted one on each floor. The lift cage, the turn-tables 8 and the parking bays are provided with tracks for receiving dollies. Each turn-table 8 is driven from an electric motor 13 (Fig. 1), controlled so that it always stops the platform in register with a parking bay. Access to the lift shaft may be through an entrance 16 on the roof of the structure which may be wholly or partially sunk in a well.
Patent GB-955418-A (GB)
Title: Improvements in or relating to reactors
IPC: B01J19/00
Filed: 1962-04-18
Abstract: 955,418. Reactors for exothermic chemical reactions. HOUILLERES DU BASSIN DU NORD ET DU PAS-DE-CALAIS. April 18, 1962 [April 28, 1961], No. 15050/62. Headings BIF and B1X. In a reactor for carrying out exothermic gaseous phase reactions comprising a plurality of reaction zones R 1 , R 2 , R n , each having a small dimension (compared with the other dimensions of the reactor) in the direction of flow of the reactants, the reaction zones are separated alternately with admission chambers E (for the cold reactants supplied through inlet manifold C 1 ) and exit chambers S (for the hot products), and each exit chamber is provided with a heat-exchanger T which is supplied with a coolant to absorb the greater part of the radiant heat emitted by the adjacent reaction zone(s). The heat-exchangers also cool the reaction products, immediately they leave the reaction zones, so that undesirable side-reactions are avoided. The heat-exchangers are part of a circuit for pressurized liquid coolant which includes a steam-generating boiler B. Specification 955,417 is referred to.
Patent GB-1487204-A (GB)
Title: Method of preparing foamed solid aminoformaldehyde furfuryl alcohol resins
IPC: C08J9/00
Filed: 1974-04-04
Abstract: 1487204 Foamed amino-formaldehyde furfuryl alcohol resins KONINKLIJKE EMBALLAGE INDUSTRIE VAN LEER BV 24 March 1975 [4 April 1974] 15067/74 Headings C3C and C3R Foamed solid amino-formaldehyde furfuryl alcohol resins are made by polymerizing a furfuryl alcohol containing amino-formaldehyde liquid resin in the presence of an acid which is compatible with the liquid resin so that a homogenous mixture is maintained during polymerization, and at least 10% by wt. (based on the resin) of a boron compound, the boron compound being present in sufficient amount so that the foamed resin will pass a muffle furnace test at 500 C. (as defined), the amine portion of the resin being urea, thiourea and/or melamine and the resin containing 15-90% by wt. of free or bound furfuryl alcohol and having an amine : formaldehyde molar ratio of 1 : 1-5. In the examples urea-formaldehyde-furfuryl alcohol resins were polymerized in the presence of furan resin, a silicone, boric acid, borax, o-phosphoric acid, polyphosphoric acid, isopropanol, 1,4-butanediol, methanol, water, glucose, ammonium phosphate and sulphate, furfuryl alcohol, dimethoxymethane, dichloromethane, pentane, tetraphosphoric acid, ammonium chloride, sodium bicarbonate, glyoxalboric acid complex, trimethoxylboroxine, sodium tetraborate, tri- and di-chloroethanes and/or talc to produce foams which were fire-retardant.
Patent GB-716321-A (GB)
Title: A process for welding thermoplastic plastics
IPC: B29C65/74
Filed: 1951-06-26
Abstract: 716,321. Seaming non-metallic sheet material. DEUTSCHE GOLDUND SILBER-SHEIDEANSTALT VORM. ROESSLER. June 26, 1951 [July 19, 1950], No. 15176/51. Class 42 (1) Welded joints are formed in tubes of thermoplastic plastic foil or film, e.g. polyethylene, by holding the sides of the tube in contact with one another at a place where they are to be joined by means of a supporting or stretching device. and cutting through them by means of a heated cutting member e.g. an electrically heated wire or strip of sheet metal, so as to form a welded joint between the cut edges on either side of the cut, the cutting member being in contact with the tube for such a short time that there is no perceptibile transmission of heat to the supporting or stretching surfaces. The stretching device may be provided with a slot, along which the heated cutting member is passed, or it may be constructed like a simple pair of closure tongs. The invention may be applied to closing filled tubular bags. Specification 689,404 is referred to.
Patent GB-814373-A (GB)
Title: Improvements in screw-stopper closures for containers
IPC: A61F7/08
Filed: 1956-05-16
Abstract: 814,373. Stoppers. EDWARDES, D. M. May 16, 1957 [May 16, 1956, Jan. 9, 1957], Nos. 15184/56 and 903/57. Class 125(3). A screw plug stopper 5 which engages a threaded metal socket 1 in a rubber hot-water bottle 2 has a frusto-conical leading part 7 which enters and radially compresses a rubber ring 4 located in a recess formed by a flange 3 of the socket. In a modification the end of the stopper is hemispherical. In another modification, Fig. 3, the travel of the stopper is limited by a cross bar 9 across the inner end of the socket. Alternatively a flange on the stopper may contact the outer end of the socket.
Patent GB-379295-A (GB)
Title: Improvements in devices for compensating the speed of bobbins nore especially in thespinning and winding of artificial silk
IPC: B65H54/74
Filed: 1931-05-22
Abstract: 379,295. Variable-speed mechanism particularly for use in spinning or winding artificial silk. FABRIQUES DE SOIE ARTIFICIELLE D'OBOURG, Obourg-lez-Mons, Belgium.-(Assignees of Scauflaire, A. L. ; Nimy, Belgium.) May 22, 1931, No. 15207. Convention date, May 26, 1930. [Class 120 (ii).] A mechanism especially for use in machines for spinning or winding artificial silk, for varying the speed of rotation of a bobbin holder shaft as a function of the radius of winding on the bobbin is characterized in that it comprises on the bobbin holder shaft a pulley of extensible diameter the extension of which is actuated by a device displaced as a function of the number of turns wound and of the size of the thread. The bobbin is driven from a shaft 6 which carries an extensible pulley 4 driven by a belt 3 passing over a pulley 2 keyed to a driving shaft 2a. The pulley comprises a number of independent segments 4a adapted to slide on arms 5 carried on a freely rotatable hub mounted on the shaft 6. The lateral faces 4b of the segments 4a are conical and provided with ribs 4d which engage in grooves 8a provided in cones 8. One cone is keyed to the shaft by a key 7 while the other is axially movable on the shaft. The diameter of the pulley is increased as the radius of winding increases by the movable cone being moved towards the fixed cone under the action of a lever 10 pivoted at 10a and carrying at its lower end a roller 10b in contact with the surface 11a of a cam 11 rotating at a low speed proportional to that of the driving shaft 2a. In Fig. 1 the cam has been shown facing in the wrong direction. A spring (not shown) is placed between the cones of the extensible pulley and by tending to force them apart urges the rollers 10b into contact with the cam surface 11a. Preferably the cam makes one revolution during the time of winding, the spring in the extensible pulley causing the roller 10b to move back to the lowest point of the cam surface 11a at the completion of this revolution. The cam is turned by means of a worm 2b on the driving shaft 2a meshing with a gear 12 on a shaft 12a which also carries another worm 12b. This meshes with a gear 13 on the same shaft as a pinion 14 meshing with a gear 15 keyed to an adjustable lever 16, pivoted about a shaft 17 which carries the cam 11 and a gear 18 meshing with the gear 15. The pitch of the cam and the gears 14, 18 are varied to suit the length and thickness of the thread to be wound. In order not to impede the variation in the diameter of the pulley the belt 3 passes over a roller 9 mounted on an arm 9a pivoted at 9b and carrying a counterpoise 9d.
Patent GB-568650-A (GB)
Title: Improvements in spinning frames for flax and similar fibres
IPC: B65H75/14
Filed: 1943-09-17
Abstract: 568,650. Spinning flax &c. MACKIE & SONS, Ltd., J., and MACKIE, J. P. Sept. 17, 1943, No. 15307. [Classes 120 (ii) and 120 (iii)] A spinning frame for flax &c. having a lifter rail f with dead spindles d affixed thereto, is combined with bobbins, the head and base portions a, b, at least, of which are moulded from an artificial resin and run directly on the spindles, i.e. with no bearing sleeves &c., drag washers k of felt, cork, fibre, &c. being interposed between the bases of the bobbins and the lifter rail or between a disc g, driven by the bobbin, and the lifter rail. A wick w holds lubricant which is applied to the surface of the spindle through perforations therein. The disc g may be replaced by one of different drag value, the washer k being held to the rail f by pins u. Specification 315,124, [Class 120 (ii)], is referred to.
Patent GB-687252-A (GB)
Title: Improvements in hair clippers
IPC: B26B19/06
Filed: 1951-06-28
Abstract: 687,252. Hair clippers. BOSCH GES., R.' June 28, 1951 [June 28, 1950], No. 15345/51. Class 131 In a hair clipper, a moving cutter is reciprocated in its own plane relatively to a fixed cutter against which it is pressed by a pressure head under the spring pressure of stirrup or yoke springs embracing the pressure head and the, fixed cutter. As shown, pressure piece 4, under the influence of U-shape springs 5, 6, urges a movable cutter 3 against a fixed cutter 1, a locating pin 7, for the pressure piece, being provided and a guide piece 13, engaging grooves 11, 12 in the fixed and moving cutters respectively, allowing lateral displacement of the movable cutter. The pressure piece is preferably made of aluminium and has notches for lubricating wicks 16, 17.
Patent GB-202756-A (GB)
Title: Improvements in and relating to musical instruments
IPC: G10H1/047
Filed: 1922-05-31
Abstract: 202,756. Compton, J. H. May 31, 1922. Stringed instruments, sound - magnifying attachments for; strings. -To produce or increase reverberation effects when musical instruments are played in buildings or out-ofdoors,a vibrant medium is arranged so as to vibrate sympathetically under the air vibrations produced by the instrument, the medium being connected with intensifying means producing sound-waves of the desired intensity. The Figure shows a vibrant medium consisting of strings b<1> on a soundboard b connected to a microphone a which is in circuit with a battery d and the primary coil e of a transformer, the secondary coil f being connected to a loud-speaking telephone g. The intensifier may alternatively be operated pneumatically through a grid-valve, or may comprise relays of thermionic valves, and its effect may be regulated by a slide in the horn, or by adjusting the voltage or pneumatic pressure.. The duration of the induced resonance may be limited and adjusted by covering the wires with elastic varnish, rubber or thin copper wire, or by damping with felt at one or both ends. The vibrator may be placed on a non-resonant part within an organ, with a number of intensifiers at a distance in the building. Specifications 10468/03, [Class 40, Electric telegraphs &c.], 10469/03, and 905/05 are referred to.
Patent GB-1087952-A (GB)
Title: Improvements in or relating to diamond form tools
Inventor: CURN FRANTISEK
IPC: B24D3/08
Filed: 1965-04-12
Abstract: 1,087,952. Diamond form tools. NARADI, PRAHA, NARODNI PODNIK. April 12, 1965, No. 15426/65. Heading B3D. A diamond form tool for form grinding hard material or for trueing grinding discs is made by using a mould 6 the inside surface of which is a negative of the required working surface of the tool; a film of liquid adhesive is deposited on this inside surface whereupon diamond powder is poured into the mould which is subsequently given a rotary movement; the excess diamond powder is poured out of the mould, a supporting body 1 for the tool is placed in the mould and the space between the supporting body and the diamond-coated inside surface of the mould is filled with bonding agent 3 which firmly binds the diamond grains in the layer forming the working surface of the tool and connects this layer with the supporting body. The mould 6 is preferably made from a forged blank of aluminium alloy with constituents Al + Cu + Mg with the addition of Fe, Ni and Ti. The blank is turned on its periphery and side face. A cavity (7) is turned in the side face of the blank and the inside wall of the cavity is given the desired profile by a form tool. A hole (8) is concentrically turned in the bottom of the cavity (7). The mould is degreased, treated with caustic soda solution for about 60 seconds and rinsed in water. The liquid adhesive may be a 5% water solution of gum arabic and is brushed or sprayed on to the inside wall of the mould cavity. The supporting body 1 is preferably of an alloy similar to that used for the mould. The periphery of the body is knurled or grooved. The body has a reduced diameter portion received in the hole (8) in the mould to ensure concentricity of the body and the mould. The body is degreased. After the excess diamond grains have been poured out of the mould and the adhesive with adhering diamond grains has air-hardened, the space between the supporting body and the mould is filled with metal powder, e.g. a mixture comprising <SP>2</SP>/ 3  by volume of filings of aluminium alloy having constituents Al+Cu+Mg and <SP>1</SP>/ 3  antimony particles. A binding agent is then sprayed on to permeate the metal powder mixture; the binding agent is preferably an alloy comprising 65% by weight of zinc alloy (Zn+Cu+Al), 31-33% Cd and 2-4% of silver solder. The mould 6 is mechanically removed, e.g. by turning or grinding. The tool is finished by forming a chucking hole, machining the sides and wet cleaning the periphery with pumice or a grinding body of silicon carbide to expose the tips of the diamond grains.
Patent GB-726868-A (GB)
Title: Improvements in or relating to devices for driving magnetic recorders
IPC: G11B15/10
Filed: 1953-06-05
Abstract: 726,868. Magnetic recording and reproducing apparatus. WIENER RADIOWERKE AKT.-. GES. June 5,1953 [June 5,1952], No. 15561/53. Class 40 (2). In a magnetic transducing apparatus having means for moving a tape or wire in two directions and at normal and fast speeds, a continuously rotatable control shaft 1 and member 2 is provided to select the appropriate operative conditions. The control has three operative positions B, D and F, corresponding to normal forward, fast forward and fast rewind, respectively. When in the position B, a projection on a lever 15 enters a groove running the full length of member 2, whereby a pressure-wheel 20 is permitted to press against a capstan 23 driving the tape or wire. The member 2 has two other grooves which only extend along half the length of the member 2. As the member 2 is rotated from one operative position to another, a projection 6 on a lever 3 enters one of the three grooves in member 2 and permits brake pads 11, through the medium of cords 8, 9, to be released so that under the tension of leaf-springs 12 they are pressed against driving discs 14 supporting the spools.
Patent GB-148279-A (GB)
Title: Improvements in a machine for the manufacture of short-shank nails
IPC: B21G3/28
Filed: 1920-06-09
Abstract: 148,279. Meek, G. H., (Kirschke, 0.). July 21, 1919, [Convention date]. Addition to 143,547. Void [Published under Sect. 91 of the Act]. Forging nails; dies.-In a machine for making nails as described in the parent Specification, the point-forming and headfinishing dies n<1> are arranged close to the four radial compressing - dies w, w', and these are arranged so that they are free to move backwards, relatively to the wire feed, as the wire extends longitudinally. The tools have surfaces s<1> to prevent the uncompressed wire from bending, and they are returned by springs o, o<1>, r, r'.
Patent GB-445399-A (GB)
Title: Process for preparing optically active trans-ªð-hydroxycamphor from optically active ª‡-ªð-(trans)-dihalogen-camphor
IPC: C07C45/67
Filed: 1935-05-30
Abstract: Optically-active trans-p -hydroxycamphor is prepared by heating an a -p -trans-dihalogencamphor with an organic acid and a salt thereof, and reacting the resulting a -halogen-p -acylhydroxycamphor with zinc powder and caustic alkali in an organic solvent.  An example describes the treatment of a -p -dibromocamphor with anhydrous potassium acetate and glacial acetic acid to give a -bromo-p -acetoxycamphor, which is then heated with zinc powder and caustic alkali in alcohol.  The acetic acid and its salt may be replaced by propionic acid or trichloroacetic acid and their respective salts, and the alcohol by acetone or benzene; and instead of the organic acid a previously made ester of the a -halogen-trans-p -hydroxycamphor may be employed.  The use of a -p -dichlorocamphor or a -chloro-p -bromocamphor as starting material is referred to. The semicarbazone of the product is described.
Patent GB-1260460-A (GB)
Title: Method for selectively combating weeds in cereal, rice and sugar cane cultures
IPC: A01N47/30
Filed: 1969-02-13
Abstract: 1,260,460. Selectively combating weeds with urea derivatives. CIBA-GEIGY A.G. 13 Feb., 1969 [13 Feb., 1968; 11 July, 1968], No. 15778/71. Divided out of 1,253,143. Heading A5E. A method for selectively combating weeds in a crop area containing cereal, rice and sugar cane cultures comprises applying to the crop area a compound of the formula: in which Y is Br, CH 3  or CH 3 O and R is H, C 1-4  alkyl or CH 3 O. Optionally other active ingredients may be present, e.g. bromoxynils, benzaldoxime ethers, urea derivatives and triazine derivatives.