baber/WOPTO huggingface dataset:
Patent GB-946879-A (GB)
Title: Polycarbonate resin and method of making
IPC: C08G64/06
Filed: 1961-05-24
Abstract: New polycarbonate resins contain the residues of a bis-(hydroxyphenyl) phenyl methane which contains at least one cyclizing divalvent radical which forms a non-aromatic ring by interconnecting a carbon atom of one of the phenyl group with the methane carbon atom or with a carbon atom of another phenyl group, the residues being in a proportion to provide at least 50% by weight of the resin.  Prepared dihydroxy compound are phenolphthalein, phenolsulphonephthalein, fluorescein and phthalidein and these substances nuclear substituted by alkyl, cyclophenyl, chloro, bromo, iodo and nitro radical.  The polycarbonates may also contain the residues of other dihydroxy compound, e.g. ethylene-, alpha-propylene-, hexamethylene-, diethylenetriethylene- or dipropyleneglycols; 1:4-cyclohexanediol, 1:3-cyclopentanediol, hydroquinone, 4:41dihydroxydiphenyl, 4:41-isopropylidenediphenol, 4:41-cyclohexylidenediphenol, 4:41-methylenediphenol, 4:41-isopropylidene-o-cresol, 4:41-isopropylidene bis (2-phenylphenol), 4:41-isopropylidene bis (2-tertbutylphenol), 4:41-or 2,41-sulphonyldiphenol and 4:41-oxydiphenol. The polymers are made by reacting the bis-(hydroxyphenyl) phenyl methane derivatives with phosgene or a bischloroformate, preferably in an aqueous alkaline medium containing a solvent (e.g. methylene chloride) and a catalyst (e.g. a quaternary ammonium compound).  Uses:  fibres, films, mouldings, castings.
Patent GB-432388-A (GB)
Title: Method of supplying pulverised fuel to furnaces above atmospheric pressure
IPC: F23K1/00
Filed: 1934-06-25
Abstract: 432,388. Jet pulverizers. HEPHAEST AKT.-GES. FUR MOTORISCHE KRAFTERZEUGUNG, 12, Freigutstrasse, Zurich, Switzerland. June 25, 1934, No. 18767. Convention date, June 28, 1933. [Class 59] [See also Group XII] A furnace 1 operating at a pressure above atmospheric is supplied with pulverized fuel directly from a pulverizer 7 in which is maintained a gas pressure exceeding that prevailing in the combustion chamber of the furnace 1. A rotary compressor 2 delivers compressed air, heated, if desired, by a coil 19, to a constricted nozzle 6 at the lower end of the pulverizer, the air, in passing up the pipe 8, entraining fuel and projecting it against the impact plate 9. The mixed fuel and air passes to the furnace through a pipe 10, the main portion of the combustion air being supplied direct to the furnace through a branch 5 from an intermediate stage of the compressor 2. Fuel is fed to the pulverizer from alternately operated hoppers 11 to which the raw fuel is supplied pneumatically, valves 15, 16, 20 being provided by which each hopper can, in turn, be connected to the pulverizer and shut off from the pneumatic supply system. Byepass connections 17, fitted with valves 18, are provided in order that the operative hopper may be subject to the same pressure as the pulverizer. A modification is described in which the pulverizer is fed from a closed container to which the raw fuel is supplied from a bunker by a continuously driven screw conveyer, release of the pressure being prevented by the packing of the fuel in the conveyer housing. In the case of fuels of high volatile content, waste gases, e.g. from combustion engines, may be supplied to the pulverizer instead of air, or combustion may be initiated in the air current on its way to the pulverizer.
Patent GB-1360811-A (GB)
Title: Manufacture of diglycidyl esters of substituted alkane-omega, omega,-dicarboxylic acids
IPC: C07D301/30
Filed: 1971-06-03
Abstract: 1360811 Diglycidyl esters REICHHOLDALBERT-CHEMIE AG 3 June 1971 [9 June 1970 (2)] 18789/71 Heading C2C Diglycidyl esters of general formula wherein Z denotes X or Y, where X represents -(CR 1 R 2 ) n - and each R 1  and each R 2  independently denote H or alkyl or alkenyl with at most 12 C atoms, and n is an integer of 1-10, and where Y represents a divalent radical selected from which esters contain 90-95% by weight of the theoretical epoxide oxygen content, are prepared by condensation of a dicarboxylic acid of formula HOOC-Z-COOH with epichlorohydrin, in the presence of choline or a choline salt as a catalyst, employing the epichlorohydrin in an amount of at least 2 mols. per 1 equivalent of carboxyl groups, whereby the corresponding chlorohydrin ester is formed, and by subsequent dehydrohalogenation of the chlorohydrin ester to give the diglycidyl ester, in which process in a first stage, at a temperature of above 60‹ C. and at most 165‹ C., the carboxyl groups of the dicarboxylic acid are practically quantitatively converted into chlorohydrin ester groups, whilst in parallel thereto, a part of the chlorohydrin ester groups formed is further transepoxidized with the epichlorohydrin present in excess to give glycidyl ester groups and at the same time an equivalent amount of epichlorohydrin is converted into glyceroldichlorohydrin with addition of the hydrogen chloride eliminated from the chlorohydrin ester groups, and that subsequently the carboxylic acid chlorohydrin esters still present in the reaction mixture and the glycerol-dichlorohydrin formed, are dehydrohalogenated by treatment with a 5 to 40% stoichiometric excess of concentrated aqueous caustic alkali solution to give the carboxylic acid glycidyl ester and epichlorohydrin respectively, the caustic alkali being added in small portions and the water added in the form of caustic alkali solution and the water of reaction formed simultaneously being distilled off azeotropically under normal pressure or in weak vacuo (50 to 150 mm. Hg.), at the rate at which it is added and formed, together with epichlorohydrin, that after addition of the total requisite amount of caustic alkali solution the reaction is stopped by cooling, the solid alkali metal chloride formed is separated off and the excess and regenerated epichlorohydrin is distilled from the reaction mix, and that finally the reaction product is washed with water to remove the catalyst.
Patent GB-1493686-A (GB)
Title: Foamable concrete mixes
IPC: C04B28/18
Filed: 1975-05-05
Abstract: 1493686 Foamable concrete mixes ANNELIESE ZEMENTWERKE AG 5 May 1975 [2 July 1974] 18831/75 Heading ClH A dry mix from which foamed concrete can be prepared by the addition thereto of water comprises a binder component, sand and a foaming additive (e.g. aluminium), wherein the binder component is at least partially a deacidified marl and the remainder, if any, of the binder component is white lime and/or Portland cement. The deacidified marl is produced by deacidifying marl at 900 to 1300 C. under conditions such as to stop short of forming substantially any cement clinker minerals.
Patent GB-1343678-A (GB)
Title: Electrophotographic plate
IPC: G03G5/08
Filed: 1971-06-03
Abstract: 1343678 Electro-photographic element MINOLTA CAMERA KK 3 June 1971 [10 June 1970] 18890/71 Headings G2C and C17D2 An electro-photographic element comprises a conductive base-plate (4), a film (3) of high resistivity semi-conductor material, a film (2) of low resistivity photo-conductive material and a transparent layer (1) of high resistivity semi-conductor material. The conductive plate may be Al, Cu, Sb, Sn or Al coated on a polyester film; the film 3 may be amorphous Se, As 2 , S 3 , As 2 Se 3  or polyvinyl carbazole; the film 2 may be an alloy of Se + Te, Se + As, Se + Sb or crystalline Se and the layer 1 may be polyvinyl carbazole, a polyimide, polyvinyl naphthalene or polyvinyl Malachite Green optionally containing diphenyl trichloride. If Au, Ag or Ni are used for the conductive plate then the dark decay of the element is unacceptably high.
Patent GB-216015-A (GB)
Title: Improvements in dobby and jacquard shedding machines
IPC: D03C1/18
Filed: 1923-07-23
Abstract: 216,015. Stõubli, H. July 23, 1923. Dobbies.-In dobbies the griffe bars are carried by levers to which a rockmotion is imparted directly by cams, the shaft carrying the cams being arranged between the said levers and the balk levers. The invention is described with reference to a double-lift dobby and is stated to be applicable to single-lift dobbies and to jacquards. As shown, the griffe bars are mounted in levers i, k, Fig. 1, pivoted at l, m to the frame a. the bars being maintained in an inclined position to engage the hooks w, v bv rods u, t passing through eyes s, r and secured at their other ends to the bars. The levers are controlled by springs and carry antifriction rollers in engagement with cams c, d situated between the levers and the balk levers x which are adapted to engage stop bars y, z and are pivoted to levers 1 hinged to the frame a at 2. The levers 1 are connected by links 3 adjustably secured to levers operating the healds through the link and lever mechanism shown in Fig. 1<a>.
Patent GB-768643-A (GB)
Title: Cyclopentanopolyhydrophenanthrene compounds and the preparation thereof
IPC: C07J75/00
Filed: 1952-07-28
Abstract: The invention comprises cyclopentanopolyhydrophenanthrene compounds having at rings B and C the formula <FORM:0768643/IV(b)/1> wherein R represents a hydroxy or acyloxy radical, and the preparation thereof by hydrogenating the double bond in the 8 : 9 position of a D 8(9)-7-keto-11-hydroxy (or acyloxy)-cyclopentanopolyhydrophenanthrene compound having at rings B and C the formula <FORM:0768643/IV(b)/2> wherein R has the above significance.  The resulting 11-acyloxy-compound may be hydrolysed to the corresponding 11-hydroxy-compound in an alkaline medium.  The 11-hydroxysubstituted product may be oxidized to the corresponding 11-keto-compound with chromic acid.  The 11-hydroxy (or acyloxy) reactant may be prepared by a process claimed in Specification 768,648.  The preferred compounds having the above formula are those containing a cyclopentanoperhydrophenanthrene nucleus, a 3-hydroxy or 3-acyloxy radical, or at the 17-position a sterol side chain, a bile acid side chain, a degraded bile acid chain, a carboxyl group, an acetyl group, an ethyl group or a sapogenin side chain.  The hydrogenation reaction is particularly useful for the preparation of D 22 - 3,11 - diacyloxy - 7 - keto - ergostenes and 7 - keto - 11 - acyloxy - tigogenin acylates.  In the examples the following compounds are prepared: D 22 - 3,11 - diacetoxy - 7 - keto - ergostene, D 22 - 3,11 - dihydroxy - 7 - keto - ergostene and D 22 - 3 - hydroxy - 7,11 - diketo - ergostene.  The following compounds having the above formula are also obtainable: D 22-7-keto - 11 - hydroxy - ergostene, D 22 - 3,11 - di-acetoxy - 7 - keto - ergostene, 7 - keto - 11 - hydroxy - cholestane, 3,11 - dihydrox - 7 - keto - cholestane, 3,11 - diacetoxy - 7 - keto - cholestane, D 22 - 3,11 - dihydroxy - 7 - keto - stigmastene, D 22 - 3,11 - diacetoxy - 7 - keto - stigmastene, 3,11 - dihydroxy - 7 - keto - cholanic acid, 3,11 - diacetoxy - 7 - keto - cholanic acid, 3,11 - dihydroxy - 7 - keto - allocholanic acid, 3,11 - diacetoxy - 7 - keto - allocholanic acid, 3,11 - dihydroxy - 7 - keto - bisnorcholanic acid, 3,11 - diacetoxy - 7 - keto - bisnorcholanic acid, 3,11 - dihydroxy - 7 - keto - bisnorallocholanic acid, 3,11-diacetoxy-7-keto-bisnorallocholanic acid, 7-keto-11-hydroxy-etiocholanic acid, 3,11 - dihydroxy - 7 - keto - etiocholanic acid, 3,11 - diacetoxy - 7 - keto - etiocholanic acid, 3,11 - dihydroxy - 7 - keto - etioallocholanic acid, 3,11 - diacetoxy - 7 - keto - etioallocholanic acid, 3,11 - dihydroxy - 7 - keto - pregnane, 3,11 - diacetoxy - 7 - keto - pregnane, 3,11 - dihydroxy - 7 - keto - allopregnane, 3,11 - diacetoxy - 7 - keto - allopregnane, 7 - keto - 11 - hydroxy - tigogenin and 7 - keto - 11 - acetoxytigogenin acetate.  The D 8(9)-cyclopentanophenanthrene reactants, and the 7,11-diketocyclopentano - phenanthrene compounds obtained by the oxidation reaction corresponding to the above specified 7-keto-11-hydroxy compounds are also referred to.
Patent GB-128681-A (GB)
Title: Improvements in Winches.
Inventor: MACFARLANE GEORGE THOMAS
IPC: B63B21/16
Filed: 1917-12-28
Abstract: 128,681. Macfarlane, G. T. Dec. 28, 1917. Winches; brakes; driving-gear; self-sustaining gear.-Winches for handling ship's cargo are driven by epicyclic gearing, or gearing of the differential type, arranged on a shaft located otherwise than in line with the winch barrel. The driving-shaft e, Fig. 1, and the shaft which carries the winch barrel b and warping-drums d are parallel and are connected by gears o, m. The gear m. is keyed on the boss of a brake drum k provided on its inner surface with teeth which are engaged by planet-pinions h mounted in a carrier f free on the shaft e. The sun-wheel g is keyed to the shaft e. Pawls n mounted on the brake drum k engage a ratchet-wheel p keyed to the shaft e and control the speed of lowering as described in Specification 115,054. In one direction of rotation, the pawls n are held out of engagement with the ratchet by links connected to blocks arranged to slide in grooves in the ratchet-wheel as described in Specification 114,650. One of the members of a friction clutch s forms the boss of a brake drum r which is keyed to the carrier f. The brake rims of the drums k, r are made separate from the drums proper as described in Specification 112,242, and may be connected to the drums by ratchet mechanism or to rotate freely in a hoisting direction even when the brake is applied fully. The pedal 2 and the hand-lever (not shown) for actuating the brake bands of the drums r, k are connected by a pivoted arm 1 so arranged that, when one lever is depressed to apply a brake, the other lever is raised to release the other brake. A weighted arm 5 tends to keep the brake applied on the drum k. The winch described above may be connected to three similar winches, Fig. 6, and driven by a vertical steam-engine 10 through gearing 11. The engine is preferably of the type which, upon being driven backwards by a falling load, acts as a brake and forces steam towards the boiler. In a modification, the planet-pinions h do not gear directly with the drum k, but are fixed on short spindles carrying other planet-pinions which gear with a toothed wheel freely mounted on the shaft e and formed integral with, or rigidly connected to, the pinion m and drum k. In another modification, the drum r, carrier f, sun-wheel g, and ratchet-wheel p are mounted on a sleeve keyed to the shaft e, and the pawls n are mounted on a ring formed with flats which engage corresponding flat faces formed within the drum k.
Patent GB-1036427-A (GB)
Title: Improvements in or relating to water closet pans
IPC: E03D11/06
Filed: 1962-05-18
Abstract: 1,036,427. Bidets and slop sinks. ARMITAGE EXCELSIOR Ltd. May 8, 1963 [May 18, 1962], No. 19232/62. Addition to 935,949. Heading A4N. [Also in Division E1] In a watercloset pan with a hollow inlet part 2 having conventional flushing openings 6 at the end of the baffle 4, a closed passage 8 in the rim with a central flushing opening 9 has at least two further holes 11 to the pan interior, one on either side thereof, the relative dimensions of the ports 11 and openings 9 being such that a pressurized stream or jet flows rearwardly from the opening 9. The opening 9 may be elongated or replaced by a group of holes. A bidet or slop sink may be similarly constructed.
Patent GB-1125831-A (GB)
Title: Process for bonding rubber to textiles
Inventor: GORCOM HENRICUS J M VAN
IPC: C08J5/06
Filed: 1966-05-02
Abstract: 1,125,831. Polymer compositions. STAMICARBON N.V. 2 May, 1966 [7 May, 1965], No. 19310/66. Headings C3P and C3R. Adhesive compositions for bonding rubbers to textiles comprising at least a major proportion of synthetic or semi-synthetic fibres or yarns, comprise an incompletely condensed phenol/ formaldehyde resin and an ethylene/organic vinyl ester copolymer having up to 10 ethylenic bonds per 100 chain carbon atoms. The compositions may be in aqueous dispersion. The compositions may be used for bonding low unsaturation rubbers, optionally followed by saturated rubbers, to rayon and nylon fibres. An example describes adhesives comprising aqueous dispersions of resorcinol/formaldehyde resin and an unsaturated ethylene/vinyl acetate copolymer or, for comparison a butadiene/ styrene/vinylpyridine copolymer, butyl rubber or ethylene / propylene / dicyclopentadiene copolymer.
Patent GB-498240-A (GB)
Title: Improvements in air diffusers
IPC: C02F3/20
Filed: 1937-07-13
Abstract: 498,240. Aerating liquids. HARTLEY, C. J. July 13, 1937, No. 19347. [Class 14 (i)] [Also in Group I] A diffuser for blowing air or other gas into sewage or other liquids comprises a plurality of unframed circular, reversible, porous tiles c held down on annular nuts b on an underframe a each by means of a single stud, bolt, set-screw, or the like e passed through a hole in the centre of the tile. The gas enters through an inlet j. Specification 397,841 is referred to.
Patent GB-140500-A (GB)
Title: Improvements in electric accumulator plates
IPC: H01M4/14
Filed: 1918-11-25
Abstract: 140,500. Elieson, C. P. Nov. 25, 1918. Electrodes.-An accumulator electrode of the PlantÚ type consists of a number of corrugated lead strips d arranged in a frame e at right-angles to the plane of the electrode, all the corrugations running along the length of the strips, as shown in plan in Fig. 6. Each strip is formed at its ends with plain lead strips b', c<1>, which act as distance-pieces between the strips, and by which the strips are connected to the surrounding frame e. The strips are formed by cutting a long band of corrugated lead having plain edges. The completed electrode may be divided into panels. Specification 333/08 is referred to.
Patent GB-1149875-A (GB)
Title: Improvements in patterning systems for circular knitting machines
Inventor: JACKSON ARTHUR THOMAS DOUGLAS
IPC: D04B15/66
Filed: 1967-04-27
Abstract: 1,149,875. Knitting machines. WILDT MELLOR BROMLEY Ltd. 1 April, 1968, [27 April, 1967], No. 19414/67. Heading D1C. A stationary cylinder machine having a multiplicity of feeding stations and a memory unit associated with each for the purpose of making a needle selection, has a single control unit comprising a continuous perforated hand 17 which is read by members 28 which transfer the patterning dictates of the band to the memory units as each one passes by the control unit. The memory units each comprise a stack of pivoted selector members 12 which are selectively advanced towards the needle cylinder by selected ones of a corresponding bank of pattern members 11 which are themselves pivoted into an operative position by the levers 28 depending which of the latter have failed to engage or engaged perforations in the band 17 carrying the pattern-dictating media and fed about a drum 13. The drum 13 is racked round under the dictates of pawl and ratchet mechanism and projections 31 on the levers 28 which engage apertures on the band permit the levers to move out of the path of a beater element 36. The remaining levers are engaged by the beater element 36 and are caused to pivot and project the pattern members 11 to advance the selectors 12. On completion of the movement of the member 11 a catch member 21 retains them in either their operative or inoperative position and the catch member is released prior to the next selection. A second beater member 70 is selectively actuated to reposition the levers 28 prior to the next racking movement of the drum 13. The member 70 is selectively operated by cams on a shaft 47 which is movable vertically to render one or other of the cams operative and thereby determine the period the levers 28 are retained selected. A lug 25 serves to trip the catch 21 prior to each selection and further lugs 99, 100 serve to operate or release a lower selector 12 which when operative causes all the needles to be rendered inactive or retained in a lowered position.
Patent GB-315094-A (GB)
Title: Improvements in and relating to electric arc devices
IPC: H01J61/54
Filed: 1928-07-05
Abstract: 315,094. Freedman, P. July 5, 1928. Vacuum tubes; low-pressure metallic-vapour apparatus.-In arc-discharge devices adapted to function as rectifiers, oscillators, or amplifiers in which the volt-ampere characteristic of the discharge is controlled by means of a grid electrode, and wherein all the electrodes are of refractory material the anode is situated between the cathode and the grid electrode. The envelope is filled with gases such as nitrogen, argon, neon, &c. or with vapour of mercury, rubidum, caesium, &c., or with a mixture of gas and metal vapour. The device is operated with the grid positive with regard to the cathode, the arc discharge between them having a negative characteristic, and the discharge between the anode and the cathode may have either a negative or positive characteristic. The device shown in Fig. 1 comprises an anode 7, a control electrode 8, and a cathode 9 consisting of a filament having a helical portion and a straight portion on which is threaded a tube of tungsten mixed with thoria or like oxides. The discharge is started between the anode and the heated coiled part of the filament but passes later to the tubular part of the cathode. The cathode may consist wholly of a helical filament, or it may be formed as a refractory bead 13, Fig. 4, in which case the anode 14 may be formed as a ring so as not to shield the cathode from the control electrode 15. A mercury pool 16 may be provided to supply vapour. A device for large power output is shown in Fig. 5 and comprises a control electrode 17 in the form of a refractory block, an anode 18, a cathode 19, and an auxiliary starting-cathode 20 consisting of a filament coated with emissive oxides. The device is started by using the cathode 19 as an anode with respect to the auxiliary cathode 20 and so heating it by bombardment to an emissive temperature.
Patent GB-670740-A (GB)
Title: Improvements in knitting mechanism
IPC: D04B9/00
Filed: 1949-07-25
Abstract: 670,740. Knitting-machines. SCOTT & WILLIAMS, Inc. July 25, 1949 [Aug. 26, 1948], No. 19536/49. Class 74 (ii). In a circular machine the needle tricks are formed by inserting trick walls 8 in slots 4 formed in the needle cylinder, the wall portions 6 between the slots, which form the bases of the needle tricks, being extended above the top of the trick walls 8 as at 16 to provide guides for the sinkers 22, thereby ensuring correct positioning of the sinkers relative to the needles. Alternatively the wall portions 6 may be recessed at the top of the cylinder as at 38, the top of the remaining portion being flush with the trick walls. Additional wall portions 40 are then inserted between the trick.walls into the recessed portions of the wall portions 6 and extend above the top of the trick walls for guiding the sinkers. The portion 42 of the inserted wall above the trick walls may be increased in width as shown in Fig. 5 to accommodate sinkers of uniform thickness. In the arrangement first described the portion 28 of the sinkers 22 adjacent the throat thereof is of less thickness than the remainder to enable the yarn to'be drawn between the sinkers and needles. A sinker ring 12 is provided for ensuring correct vertical positioning of the sinkers.
Patent GB-1223838-A (GB)
Title: Concrete mixer
Inventor: PULLIN LESLIE CHARLES
IPC: B01F7/00
Filed: 1967-04-28
Abstract: 1,223,838. Mixer. PORTASILO Ltd. 3 April, 1968 [28 April, 1967], No. 19644/67. Heading B1C. A mixer comprises a rotatable shaft 3 provided with blades forming an inner set 7, 9 and an outer set 5, 8, the blades of one set being arranged to convey material in an opposite direction to the blades of the other set, and the blades of the outer set being carried on arms which are so disposed that the angle between each arm when measured counter to the direction of rotation as shown, decreases in the direction in which material is moved by the outer set, i.e. in a direction from left to right as shown. The angle between successive arms of the outer set may be 240; 240; 180; and 120. A flow reversing blade S' may be provided adjacent one end of the trough 1. Blades of the inner and outer sets may be carried on the same arm 6. The mixer may be tilted to discharge material via chute 10.