baber/WOPTO huggingface dataset:
Patent GB-430166-A (GB)
Title: Improvements in or relating to extrusion presses for freeing kneaded masses from gases
IPC: B28B3/22
Filed: 1933-12-12
Abstract: 430,166. Moulding clay &c. in extrusion machines. DURST, E., and DURST, O., Liestal, Basle, Switzerland. Dec. 12, 1933, No. 34961. [A Specification was laid open to inspection under Sect. 91 of the Acts, June 13, 1934.] [Class 87 (ii)] In extrusion presses for clay and like material of the kind set out in U.S.A. Specification 1,478,842, wherein the material is forced by a preliminary press a through a divider b, where it is subdivided into strips, and into a degasifying space w from which it passes to a main press e, a vacuum space c<1> is provided, separated from the space w by a partition z having an opening z<1>, and one or more cleaners y are provided to keep the opening z' clear. The cleaners y may be mounted on the shaft of the main-press worm e, or may be driven independently, and work in the space w which may be an annular conduit. The press a may be a roller press or a worm which may rotate round a fixed shaft and be driven by a toothed rim, a fixed stripper being provided. The worms a, e may be in alignment and be mounted either vertically or horizontally. When vertical, the worm e may deliver the material to a further horizontal worm press. The divider b, Fig. 6, may consist of a perforated plate in combination with one or more stationary cutters x, xl. Various forms of divider are described. The cutters may be ribs, knives, bars, bands or wires having round or other cross-sections and arranged so as to divide the material into a successively larger number of strips, or they may be in the form of wires tensioned on radial spokes of wheel-like elements. The divider may be flat, conical or other shape and may be arranged at the entrance to a tubular carrier b<1>. A rotary stripper may be provided to remove strips from the divider and may be in the form of arms on a hub, the arms having turned-over upper edges, or the stripper may be in the form of a rotating wheel with radial cutting- wires. The Specification as open to inspection under Sect. 91 comprises also constructions wherein a degasifying space, directly connected to vacuum, only is provided and there is no separate vacuum space. Strippers on the main worm shaft are provided to remove material from the casing of the degasifying space. A further dividing worm may be provided in the degasifying space and the shaft of the main worm may be inclined to the axis of the die. The divider may serve as a bearing for the worm shaft which is protected by a brass bearing at that point. In one form, the preliminary and main worms are shown arranged at right-angles. This subject-matter does not appear in the Specification as accepted.
Patent GB-871867-A (GB)
Title: Improvements in or relating to electric circuits employing elements which operate byvirtue of the hall effect
IPC: G01R21/08
Filed: 1957-11-11
Abstract: 871,867. Semi-conductor devices. SIEMENSSCHUCKERTWERKE A.G. Nov. 11, 1957 [Nov. 13, 1956], No. 35080/57. Class 37. A Hall plate, made of a material in which the carrier mobility is more than 6000 cm.<2>/volt sec., e.g. an AIII BV compound is disposed between the poles of an electromagnet in an air gap the thickness of which is less than (2 x 107- tines the carrier mobility)cm. The device is used as a modulator or frequency converter using a slowly varying direct current or lowfrequency alternating current through the winding of the electromagnet to modulate a higher-frequency current between the current electrodes of the Hall plate. The employment of the lower-frequency current in the magnet winding reduces unwanted inductive voltages in the output circuit. The core of the electromagnet is preferably made of a ferrite of high permeability and negligible hysteresis loss.
Patent GB-890007-A (GB)
Title: Modified rubbery organopolysiloxane putty compositions
Filed: 1960-10-13
Abstract: A composition comprises (A) bouncing putty, and (B) from 5 to 50% by weight of (A) of a dimethylpolysiloxane having a viscosity at 25 DEG C. of at least 10,000 cs.  Compound (A) is the reaction product of (1) 100 pts. (by wt.) of a dimethylsiloxane and (2) from 0,5 to 25 pts. of a boric oxide, a boric acid, a borate or a partially hydrolyzed borate, and is composed almost entirely of dimethylpolysiloxane chains which average 20 to 175 Si atoms and which are hydroxyl-terminated or joined by <FORM:0890007/IV (a)/1> linkages or both.  Compound (A) may be made by heating a mixture of (1) and (2) to 250 DEG C. or less, as described in Specification 605,218 and U.S.A.  Specification 2,431,898.  Siloxane (B) can be mixed into the bouncing putty or with the reactants in preparing the putty.  Fillers, e.g. lithopone, bentonite, diatomaceous earth, crushed quartz, laminar Al2O3, TiO2, ZnO, Fe2O3, cork, P.T.F.E., copper phthalocyanine and silicas (fume, aerogel and xerogel) with or without pretreatment, pigments and oxidation inhibitors may also be added.  Examples are given.  Uses: For cleaning typewriters; sealing and caulking applications; in damping apparatus and in insoles for athletic shoes.
Patent GB-1501558-A (GB)
Title: Asymmetric hydrogenation of alkenoic acids and their esters
IPC: C07C67/303
Filed: 1976-08-24
Abstract: The geometric Z isomer of a compound of the formula: <IMAGE> is subjected to asymmetric hydrogenation with homogeneous catalysis. The catalyst used is a coordination complex of rhodium, iridium and/or ruthenium. The complex contains an optically active ligand of the formula: <IMAGE> This gives enantiomorphs of corresponding compounds of the formula: <IMAGE> with a high degree of optical purity. At least one of the carbon atoms of the groups of the formula <IMAGE> represented in formula A or B is asymmetric. In the formulae, R, R<1>, R<2>, R<3>, A and D have the meanings given in Patent Claim 1.
Patent GB-1364300-A (GB)
Title: Packages for injectible medication
IPC: B65D75/20
Filed: 1971-07-27
Abstract: 1364300 Packages IMS Ltd 27 July 1971 35131/71 Headings B8C and B8K A flexible bag 10 of plastics sheets heat-sealed together at their edges has a slit 16 in a semicircular portion of the seal 18 whereby the end of the bag may be torn off to give access to the contents. The bag may contain solids or liquids and may contain a sterilizing gas and an indicator strip when medical articles are packaged. The bag may be formed from aluminium foil.
Patent GB-631585-A (GB)
Title: Process for the manufacture of pure aluminium by means of refining
Filed: 1947-12-31
Abstract: A process for producing pure aluminium, in which crude aluminium, impure aluminium of various kinds, aluminium alloys or other materials containing aluminium metal, such as aluminium carbide or nitride, serve as raw materials, comprises treating the raw materials at elevated temperature with a salt melt containing aluminium halide to form an aluminium-subhalide-containing melt while passing through the reacting melt an electric current, e.g., direct current.  This current may be 1/4 -1/6 of that necessary for electrolytic refining of the pure aluminium extracted.  The melt is separated from the remaining material and cooled to decompose the subhalide to aluminium trihalide and pure aluminium.  The reaction may be performed under pressure in a closed vessel.  The halide melt composition may be chosen to have a smaller specific weight or to have a greater specific weight than the raw material treated.  In each case the raw material, whether overlying the halide melt or underlying it, is connected anodically and the halide melt is connected cathodically to a source of direct current by electrode materials, such as graphite, which are not consumed during the process.  Direct and alternating current may be used simultaneously.  The aluminium halide, e.g., the fluoride, may be mixed with a considerable quantity, e.g., about 40 per cent of a barium halide.  Reaction may be carried out by passing the raw material through the halide melt in drops.  The process may be cyclic, using heat-exchanging means, the subhalide melt formed in the reaction vessel being used for preheating regenerated trihalide recovered from the decomposition of the subhalide melt.  Loss of heat in the cycle may be compensated by resistance heating of the melt in the reaction vessel or by induction heating.  Reaction is preferably carried out at about 1000 DEG C.-1100 DEG C., the subhalide being then cooled to about 700 DEG C. for recovery of aluminium. the drum 8 in a direction which feeds the mix to the forward end, and the mix can be delivered to a form above the ground by elevating and reversing the rotation of the drum 8.
Patent GB-367853-A (GB)
Title: Improvements in manhole covers and frames
IPC: E02D29/14
Filed: 1930-11-22
Abstract: 367,853. Manhole frames and covers. LANT, A. E., Wayside, Wickersley, near Rotherham, and DARLEY, G. F., 301, Handsworth Road, Sheffield. Nov. 22, 1930, No. 35270. [Class 107.] A one - piece manhole cover in the form of at equilateral trian gle having trun cated or rounded corners d if adapted to fit intc a similarly shaped opening in a frame a, seats e being pro. vided at the cor. ners of the opening for supporting the corners of the cover. Strength. ening ribs g may be provided on the cover. Grooves f may be formed in the cover for the reception of a lifting bar. The faces of the seats e may be inclined.
Patent GB-811838-A (GB)
Title: Improvements in or relating to burettes
IPC: B01L3/02
Filed: 1957-11-12
Abstract: <PICT:0811838/III/1> <PICT:0811838/III/2> A burette for delivering and measuring variable small amounts of liquid comprising a liquid reservoir, a rod extending into said liquid reservoir adapted to displace liquids from same and a micrometer assembly serving to move the rod at predetermined axial distance for each revolution of the micrometer screw which is characterized by winding a wire on to an element which rotates with the screw and drives an indicating means to give the amount of the liquid displaced from the reservoir by the rod.  A micrometer 11 advances rod 13 and moves a rod 22 made of inert material into the liquid sample reservoir 26 so displacing the liquid from 58.  The wire 18 which winds on the rod 13 passes upwardly to indicator 21 and can be connected to drive pointer 33.
Patent GB-956831-A (GB)
Title: Wax-containing thermoplastic compositions
IPC: C08L91/08
Filed: 1962-09-17
Abstract: Compositions comprise a copolymer of ethylene and vinyl acetate in amount from 45 to 95 weight per cent of the total composition and a hydrocarbon wax having a melting point of 145 to 195 DEG F. and containing less than 75 weight per cent of normal paraffins, said copolymer having a vinyl acetate content greater than 25 and less than 30 weight per cent and a melt index of 0.1 to 25.0. The copolymer may be prepared by copolymerizing ethylene and vinyl acetate at high pressure in a tubular reactor in the presence of t.-butyl hydroperoxide.  The wax is preferably a petroleum wax and may be paraffin wax, microcrystalline wax or mixtures thereof. The compositions may also comprise pigments and fillers, and may be used for coating, laminating, injection or extrusion moulding or for unsupported films.ALSO:Compositions comprise a hydrocarbon wax having a melting point of 145 DEG  to 195 DEG  F. and containing less than 75 weight per cent of normal paraffins, and from 45 to 95 weight per cent of the total composition of a copolymer of ethylene and vinyl acetate having a vinyl acetate content greater than 25 and less than 30 weight per cent and a melt index of 0.1 to 25.0. The wax may be produced by distillation or selective solvent extraction processes, and may comprise paraffin wax, microcrystalline wax, or mixtures thereof. In comparative examples compositions are described containing waxes of melting points 131.9, 136.8, 151.9 and 175.0 DEG F. containing respectively 89, 54, 71 and 20 weight per cent of normal paraffins.  The compositions may also comprise pigments and fillers, and may be used for coating, laminating, injection or extrusion moulding or for unsupported films.
Patent GB-811510-A (GB)
Title: New nitrogen-containing derivatives of polyhydroxy compounds and process for the preparation thereof
IPC: C07D203/10
Filed: 1955-12-08
Abstract: The invention comprises mono-, bis- and tri-b -halo-ethylamino-derivatives of hexoses, hexitols and derivatives thereof having substituted hydroxyl groups (e.g. acetals, cyclic acetals, thioacetals and semi-acetals), and a process for their preparation by reacting an ethyleneimino derivative of a hexose, hexitol or a derivative thereof having substituted hydroxyl groups, with a hydrogen halide, and if required removing any hydroxyl group substituents.  The intermediate ethylene-imino compounds may be prepared by reacting an epoxide of a hexose, hexitol, or derivative thereof, with ethylene imine and if required removing any hydroxyl group substituents.  Specified hexoses and hexitols are glucose, mannose, galactose, mannitol and sorbitol, and particular hydroxyl derivatives include isopropylidene and benzylidene derivatives, mercaptals, mercaptols and glucosides, while suitable epoxide starting materials are 5,6 - anhydro - 1,3 - 2,4 - diethylidene - D-sorbitol, 1,2 - 3,4 - di - isopropylidene - 5,6 - anhydro - D - mannitol, 1 - p - toluenesulpho - 2,4-benzol - 5,6 - anhydro - D - sorbitol, methyl 2,3-anhydro - b  - D - mannopyranoside, 4,6-benzylidene - 2,3 - anhydro - a  - methylmannoside, and methyl 3,4-anhydro-b -D-galactopyranoside.  In examples: (1) 1,6-bis-ethyleneimino - 1,6 - desoxy - 3,4 - isopropylidene - D-mannitol (prepared by the addition of ethyleneimine to 1,2-5,6-di-anhydro-3,4-isopropylidene-D-mannitol) in methanol is added slowly to cooled, concentrated HCl, yielding crystals of 1,6 - bis - (b  - chloro - ethylamino) 1,6 - desoxy-D-mannitol dihydrochloride; (2) 1,2-isopropylidene - 6 - ethyleneimino - 6 - desoxy - D - glucofuranose (prepared by addition of ethyleneimine to ethereal 5,6-anhydro-1,2-isopropylidene-D-glucose) similarly yields 6-mono-(b -chloroethylamino) 6-desoxy-D-glucofuranose.
Patent GB-1043818-A (GB)
Title: Valve mechanism for controllably releasing a pressure fluid
Inventor: BENNETT BRIAN SIDNEY
IPC: F16K1/38
Filed: 1964-08-28
Abstract: 1,043,818. Valves. BRITISH OXYGEN CO. Ltd. Aug. 17, 1965 [Aug. 28, 1964], No. 35344/64. Heading F2V. [Also in Division F4] A device for dispensing, e.g. pressurized liquefied gas contained in a bottle 48 comprises a body 40 having a bore 41 in which a tubular member 42 is axially movable by rotation of a cap 51 secured thereto to move a pin 43 into piercing and sealing engagement with the bottle 48 with a force determined by the degree of compression of a resilient element disposed between the pin 43 and an adjustable stop 46 screwed into the tubular member 42. The resilient element 44 is preferably a plug of hard rubber and is separated from the stop 46 by a spacer 45. To release fluid from the bottle 48 to an outlet 49 the cap 51 is rotated in the opposite direction, a cross-pin 52 being arranged to abut a flange 53 to limit the rotation thereof. A relief valve 50 is provided.
Patent GB-1496603-A (GB)
Title: Roadside noise-protection screens
IPC: E01F8/00
Filed: 1975-08-27
Abstract: 1496603 Roadside noise barriers GAVELS ARKITEKTKONTOR AB 27 Aug 1975 [27 Aug 1974] 35409/75 Headings E1B and E1G A roadside noise protection screen comprises a plurality of hollow plastics or other members 2 of approximately equal length arranged in a vertical plane and each having its longitudinal axis inclined at an angle between 15 and 75 to the horizontal, depending on the screen height required, the members 2 being interlocked either by opposed tongues 4 and grooves 3 or by loose tongues between grooved members. The interlocked members have their lower ends embedded in a gravel or like trench 6 and have undisclosed supports at intervals. The hollow members 2 may be filled with sand, foam plastics or mineral wool and may have perforations facing the noise source. As shown each member has initially a substantially elliptical section but this is deformed in assembly by the weight of superposed members, the deformation (Fig. 4 not shown) serving to tighten the interlock 3-4. The screen can conform to an undulating ground surface (Fig. 5 not shown) and its members should be sufficiently flexible to follow road curves. It is stated that the screen supports may be resiliently resistant to impacts.
Patent GB-347095-A (GB)
Title: Improvements in the manufacture and production of chloroderivatives of the anthraquinoneacridone series
IPC: C09B5/34
Filed: 1929-11-20
Abstract: Chloranthraquinone benzacridones are prepared by acting on 1-anilidoanthraquinone which may, if desired, contain chlorine atoms and which contains a methyl group in o-position to the nitrogen atom, with chlorine or agents supplying chlorine in an organic solvent in the absence of acid-binding agents and in the absence of water, until products are formed which on saponification yield chloroanthraquinone-2 : 1-benzacridones containing substantial amounts of a hexachloro derivative, and saponifying the products. Chlorination is carried out, preferably at temperatures above 170 DEG C., rapidly, for example by introducing chlorine through a large number of inlet nozzles. Anthraquinonechloracridines are thus formed which are converted into red vat-dyes by saponification, for example, by means of concentrated sulphuric acid or by heating them with water or steam.  Other dyestuffs giving very pure shades are obtained by reducing the chlorine content of these products by treatment with reducing agents.  Stannous chloride in an organic solvent may be used for this purpose, or the products may be vatted at about 55 DEG  C., or at ordinary temperatures followed by reoxidation after several hours.  The leuco compounds obtained from the hexachloranthraquinone-2 : 1-benzacridone are difficultly soluble and thus easily separated from the less valuable leuco derivatives from lower chlorinated acridones.  It is advantageous to treat the difficultly soluble leuco compounds thus obtained with potassium bichromate and dilute sulphuric acid to increase their solubility. Examples illustrate these processes.  The hexachloranthraquinone-2 : 1-benzacridone thus obtained yields when treated with diethylaniline a product dyeing brown to currant shades, and the chloro derivative obtained therefrom by vatting and containing 4-5 atoms of chlorine (dyeing pink), on similar treatment with diethylaniline, loses chlorine and yields a product dyeing orange to brown shades, which is reconverted to a pentachloro body by chlorination in nitrobenzene; the product thus differs from the pentachloro derivative obtained according to the process of Specification 5534/13 which yields by this treatment with diethylaniline a dyestuff giving currant shades on cotton. The Provisional Specification refers to the treatment as described above of 1-anilidoanthraquinones containing an o-methyl group generally.  Reference has been directed by the Comptroller to Specifications 5534/13 and 14360/14, [both in Class 2 (iii), Dyes &c.].
Patent GB-431179-A (GB)
Title: Improvements in and relating to high speed compressors
IPC: F04B39/00
Filed: 1934-12-10
Abstract: 431,179. Compressor valves. HARDYPICK, Ltd., and RAYNER, P. T., Mining Tool & Mining Engineering Works, Heeley, Sheffield. Dec. 10, 1934, No. 35491. [Class 8 (i)] The discharge ports h of a high-speed compressor are controlled by valves held by coiled springs k mounted in cylindrical extensions of semi-cylindrical carrying members m suspended by set screws n from the flange o of the cylinder or its liner b. The members m have knife edges q abutting on the wall of the discharge duct. Inlet takes place by parallel slots d in the head controlled by valves g supported by a grid f.
Patent GB-795104-A (GB)
Title: Steroid compounds and the preparation thereof
IPC: C07J75/00
Filed: 1955-05-20
Abstract: The invention comprises compounds having the formula: <FORM:0795104/IV (b)/1> wherein R1 is a b -hydroxyl group or keto group and R2 is hydrogen, hydroxyl and esters or ethers thereof containing from one to ten carbon atoms in the added moiety, and the preparation thereof by treating a compound having the formula: <FORM:0795104/IV (b)/2> with a non-oxidizing acid, e.g. p-toluene sulphonic acid, hydrochloric acid or oxalic acid, in the presence of an organic solvent, e.g. benzene, toluene, chloroform, carbon tetrachloride, cyclohexane or dioxane.  The 21-hydroxyl group may be esterified to produce the formate, acetate, propionate, trimethylacetate, benzoate, succinate, phthalate or cyclohexanecarboxylate, or etherified to produce the methyl, ethyl or benzyl ether.  An example describes the preparation of 11b ,17a ,21 - trihydroxy - 4,14 - pregnadiene3,20 - dione - 21 - acetate, 11b ,17a - dihydroxy-4,14 - pregnadiene - 3,20 - dione, 17a  - hydroxy-4,14 - pregnadiene - 3,11,20 - trione and 17a ,21-dihydroxy - 4,14 - pregnadiene - 3,11,20 - trione.  Specifications 761,649, 795,101, 795,105 and 795,106 are referred to.
Patent GB-467840-A (GB)
Title: Improvements in or relating to magnetron circuit arrangements
IPC: H03B9/10
Filed: 1935-12-23
Abstract: 467,840. Valve circuits. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. Dec. 23, 1935, No. 35635. Convention date, Dec. 22, 1934. [Classes 39 (i) and 40 (v)] A magnetron having a split anode system coaxially surrounding a linear cathode is controlled by varying the angle of the magnetic field. The main field is parallel to the cathode and a small variable field is created at rightangles thereto so that the angle of the resultant field varies. The anode current Je and the angle a of the field are related as shown in Fig. 2, and by operating with an angle varying from + alpha through zero to -alpha, the anode current fluctuates at twice the frequency of fluctuation of alpha. If alpha varies about the point Y, oscillations as shown by Je in Fig. 4 are obtained, which are of the same frequency as a. The variable field may be created by a loop Wg, Fig. 5, between the split anodes, or two opposite anode segments A2, A4 may be joined at B, Fig. 6. The magnetron may have a series or parallel tuned circuit in its anode circuit, Fig. 7 (not shown). The anode segments may be connected together in pairs by loops B, Fig. 8, and the two loops connected through an oscillatory circuit L1, C1 to an aerial. The source fst of variable current for producing the variable field is connected through Lecher wires to the anode segments A2, A4. The coupling is effected at nodal points and the oscillations of the magnetron are then controlled by the source fst.