baber/WOPTO huggingface dataset:
Patent GB-1385325-A (GB)
Title: Device for separating isotopes
IPC: B01D59/50
Filed: 1971-07-26
Abstract: 1385325 Isotope separators MAX-PLANCKGES ZUR FORDERUNG DER WISSENSCHAFTEN e V 26 July 1971 [25 July 1970] 35039/71 Heading H1D An isotope separator includes a vacuum separation chamber 10 surrounded by a coil 12 for producing within the chamber a magnetic field B parallel to the axis of the chamber, an electrode 14a in the chamber, the electrode having an active surface 18a transverse to the axis and capable, when heated, of ionizing, by contact ionization, isotopes to be separated and of emitting electrons, means (such as a cathode 20a) for heating the active surface, means 26 for supplying atoms of the isotopes to be separated to the active surface to enable ions of the isotopes and electrons to form a plasma, and respective extraction means 40, 42 for the heavy and light isotopes. In the embodiment shown the evaporator 26 contains material 34 from which the isotopes are evolved when the evaporator is heated, and is formed to direct a beam 32 of atoms at the surface 18a. A similar electrode 14b is provided at the end of the chamber 10 opposite electrode 14a. Materials from which the surface may be made for use in separating isotopes of uranium, alkali metals or alkaline earth metals are tungsten, rhenium, tantalum or carbon; alternatively ceramics which are electrically con. ductive at the operating temperature of the surface may be used and, e.g., comprise beryllium oxide and/or zirconium oxide and/or thorium oxide. The plasma formed is confined by the magnetic field B. An ion and electron density variation with distance from the axis 36 is maintained to produce a radial electric field Er which, with the magnetic field B, causes the plasma to rotate about axis 36. The density variation can be achieved by providing a radially varying temperature distribution on the surface 18a or by altering the composition of the material of the surface according to radial distance from axis 36. The rotational speed of the plasma can be increased by addition of lithium ions. In another embodiment (Fig. 2, not shown) in which the axis 36 is vertical, the evaporator (26) is a conductive boat positioned behind the electrode (14<1>) the latter having a perforate front plate (16<1>a) for passage therethrough of ions. Sides of the perforations form the active surface. In modifications (not shown) the active electrode surfaces may be unheated; only one electrode may be provided; a cylindrical electrode, in addition, can surround the plasma column to enhance the radial electric field; and the ionization electrode and evaporator can be combined in which case the combination comprises a hollow body which can be heated to evaporate its contents which are ionized by the wall of the body and escape from the body through openings.
Patent GB-1042240-A (GB)
Title: Method of producing allene
IPC: C07C2/76
Filed: 1965-08-16
Abstract: Allene is obtained when methane and ethylene are exposed to ultra-violet radiation of wavelength 1000-1750 <\>rA.  The molar ratio of methane to ethylene may be 10:1 to 1:10, the pressure 1-760 mm. Hg., the temperature - 169 DEG  to 300 DEG  C. and reaction time 5 minutes to 3 hours.  The allene is recovered chromatographically.
Patent GB-508060-A (GB)
Title: Improved warp let-off motion for looms
IPC: D03D49/06
Filed: 1937-12-18
Abstract: 508,060. Warp-tensioning devices for looms. HARDY, J. Dec. 18, 1937, No. 35119. [Class 142 (ii)] One end 11 of a band brake round the end of a warp beam 2 is connected to one leg 6b of an L-shaped lever 6 loose on the beam pivot 4 the other leg 6a of the lever being weighted at 7. The two ends 11, 8 of the band brake are drawn together by a spring 9, and between the two ends is a lever 12 anchored to the loom frame at 12b. When the warp tension is excessive, e.g. at shedding, the lever 12 opens the band brake. Reference has been directed by the Comptroller to Specifications 337/10, 9956/10, 294,151, and 309,960, [all in Class 142 (ii)].
Patent GB-781491-A (GB)
Title: Salts of hydrazine
Inventor: REED RONALD ARTHUR
IPC: C02F1/00
Filed: 1954-12-04
Abstract: The invention comprises hydrazine salts of aliphatic amino-polycarboxylic acids, and their production from hydrazine or its hydrate or a salt thereof having at least one reactive amino group and the acid or a salt thereof having at least one free acid group.  The preferred reactants are hydrazine or its hydrate, monohydrochloride, sulphate, phosphate or acetate on the one hand and ethylene-diamine tetraacetic acid or its mono-, di- or tri-alkali salts on the other, in proportions of 2, 1 1/2 , 1 or 1/2 mol. of hydrazine per mol. of acid.  Other acids that may be used are hydroxyethyl-ethylene-diamine triacetic acid, diethylenetriamine pentaacetic acid, triethylenetetramine hexaacetic acid and nitrilotriacetic acid.ALSO:Water is simultaneously deoxygenated and softened by treatment with a salt of hydrazine with an aliphatic amino-polycarboxylic acid, especially ethylenediamine tetraacetic acid.  The hydrazine and the acid are preferably present in equimolecular proportions although 2 : 1, 3 : 2 and 1 : 2 ratios may be used.  Any reactive groups not neutralized are masked by salt-formation, e.g. the two spare carboxylic acid groups as sodium salts.  Other suitable acids are mentioned.
Patent GB-1529096-A (GB)
Title: Waterproof match-head and striker compositions
IPC: C06F3/00
Filed: 1977-08-24
Abstract: 1529096 Match-head and striker compositions DEFENCE SECRETARY OF STATE FOR 24 Aug 1977 [24 Aug 1976] 35259/76 Heading C1D A waterproof match-head or striker composition contains as a binder 25-50% by weight of a cured polysulphide or epoxide/polysulphide resin. The binder may be used in the form of a solution or suspension in methyl ethyl ketone, acetone, or solvent naphtha of liquid polysulphide rubber, diglycidyl ether of bisphenol A, and anilineformaldehyde hardener. In addition to the binder, a safety match-head composition contains potassium chlorate, potassium dichromate, sulphur or carbon, MgO, MnO 2 , and sodium nitrate; a striker composition contains red phosphorus, with or without powdered glass; and a "strike anywhere" match-head composition contains phosphorus sesquisulphide, an oxidiser, and an abrasive.
Patent GB-394336-A (GB)
Title: Improvements in and relating to photo-composing methods
IPC: B41B21/36
Filed: 1931-12-21
Abstract: 394,336. Photographic type-composing. UHERTYPE AKT.-GES., Glarus, Switzerland. Dec. 21, 1931, No. 35282. Convention date, Dec. 20, 1930. [Class 98 (i).] In a process of photographic type-composing, the text to be composed is registered character by character in the form of two sets of controlling bodies displaceable by manual operation of the keyboard, one body of each set being displaced by each actuation of the keyboard, the bodies of one set representing by their position the individual selected characters and their sequence and those of the other set by their dimensions the step-by-step feed of the carrier for the sensitive material, the photographing of the text taking place only after at least one line of text has been registered letter by letter. As shown diagrammatically in the drawing, apparatus for carrying out the process comprises a keyboard T, a carrier O for the control bodies of the first set ; a collector G for the control bodies of the second set ; a selecting device P, M for the characters to be recorded, and a carrier 16 for the sensitive film 9. The carrier O may be a drum to which control bodies in the form of balls are fed as described in Specification 334,499, [Class 98 (i), Photographic cameras &c.], the balls operating two sets of contacts 4, 5, the first set operating means for setting up the second set of control bodies for example, as described in Specification 358,144, and the second set actuating drum selecting apparatus P, M of the type described in Specifications 328,435, and 331,305, [both in Class 98 (i), Photographic cameras &c.]. Justification of the control bodies in the collector G may be effected in the manner described in Specification 351,043. The setting up of the text may be accompanied by the formation of a directly visible type copy K2 and the actuation of the keyboard by the setting up of a directly visible checking type Kl.
Patent GB-1514472-A (GB)
Title: Ceramic materials
IPC: C04B35/486
Filed: 1975-06-26
Abstract: 1514472 Substituted lead zirconate ceramic materials PLESSEY CO Ltd 26 June 1975 [10 Aug 1974] 35315/74 Heading CIJ A ceramic material whose composition comprises lead zirconate substituted with uranium wherein zirconium is also substantially equally substituted with either iron and niobium, iron and tantalum, or nickel and niobium. Bismuth and potassium may be substituted for the lead and the zirconium may be further partially substituted with titanium or hafnium.
Patent GB-1444263-A (GB)
Title: Method and equipment for switching a magnetic tape handling assembly
IPC: G11B15/06
Filed: 1973-07-25
Abstract: 1444263 Tape recorder BASF AG 25 July 1973 [26 July 1972] 35321/73 Heading G5R A tape recorder 1 is switched off when contacts K detect the increase in resistance during the transition from measuring the resistance of the tape coating and that of its clear plastic leader or trailer. Additionally the coating resistance measurement can be used to distinguish between Fe 2 O 3  tape and CrO 2  tape so that the bias setting &c. of the recorder can be switched accordingly.
Patent GB-1100478-A (GB)
Title: Drafting machine
Inventor: WOLF JESSE DAVID
IPC: B43L13/14
Filed: 1965-08-18
Abstract: 1,100,478. Drafting machines. UNIVERSAL DRAFTING SYSTEMS Inc. Aug. 18, 1965, No.35329/65. Heading G1X. A drafting machine for development of an isometric view from flat views, comprises horizontal guide means 17 for mounting on a drafting board 10, vertical guide means 13 coupled to the horizontal guide means for pivotal movement clockwise and anticlockwise with respect to the vertical and for longitudinal movement of the vertical guide means in any orientation thereof, alignment means co-operating with the horizontal guide means and the vertical guide means for positioning the vertical guide means 13 at an angle of about 30‹ clockwise and anticlockwise with respect to the vertical, and rule means H coupled to the vertical guide means. The guide 13 extends the full width of the board and pivots about a point 14 on a pivot bracket base 21. The guide 13 moves horizontally along guide 17 by means of a dolly 16 having wheels 16a, 16b which engage in grooves 17c in the guide 17. The relative positions may be fixed by a brake 18. The rule 11 is mounted on an extension arm 33 which is slidably mounted on the guide 13 and may be locked in position by brake 36 Fig. 6 (not shown). The centre of the rule 11 has a protractor head 34, with a 150‹ angle between edges 86, 87 and lower edges 49, 50 are inclined to each other at an angle of 120‹. Edges 86, 87 have mounted thereon perpendicular rulers 45, 46.
Patent GB-1294650-A (GB)
Title: Improvements in or relating to the stabilization of carotene
Inventor: GILLER SOLOMAN ARONOVICH
IPC: A23K3/00
Filed: 1970-07-22
Abstract: 1294650 Carotene stabilizers ORDENA TRUDOVOGO KRASNOGO ZNAMENI INSTITUT ORGANICHESKOGO SINTEZA AKADEMII NAUK LATVIISKOI SSR 22 July 1970 [22 July 1969] 35425/70 Headings A2D and A2B [Also in Division C2] Carotene and materials containing carotene (e.g. animal foods) are stabilized by incorporating thereinto the compounds of formula: wherein R is (C 1-6 ) alkyl or an alkoxy group. The following stabilizers are specified: 2, 6-dimethyl-3, 5-diacetyl-1, 4-dihydropyridine, and 2, 6-dimethyl-3, 5-dicarboethoxydihydropyridine.
Patent GB-1368896-A (GB)
Title: Mycophenolic acid derivatives and process for production thereof
IPC: C07D307/88
Filed: 1972-07-28
Abstract: 1368896 Mycophenolic acid derivatives CHUGAI SEIYAKU KK 28 July 1972 [31 July 1971 (2) 24 Feb 1972] 35538/72 Heading C2A Novel mycophenolic acid derivatives having the Formula (I) wherein R is a C 1-6  alkyl group or a C 1-6  alkenyl group, and R<SP>1</SP> is (a) -NH 2 , in which X is hydrogen, halogen, hydroxy, carboxy, sulphamoyl, nitro, cyano, phenyl, C 1 -C 4  alkyl, C 1 -C 4  alkoxy, C 2 -C 5  acyl, C 2 - C 5  alkoxycarbonyl, C 2 -C 5  acylamino, C 5 -C 7  dialkylaminoethoxycarbonyl, or C 2 -C 8  dialkylamino; X<SP>1</SP> and Y<SP>1</SP> are the same or different and each is hydroxy, nitro, carboxy or C 1 -C 4  alkyl; and X<SP>2</SP> is hydrogen, halogen or C 2 -C 8  dialkylamino, are prepared by either (i) reacting an R- esterified mycophenolic acid haloformate of Formula (II) in which R is as defined above and X<SP>3</SP> is halogen, with an amine of formula HR<SP>1</SP>; or (ii) when R<SP>1</SP> is -NH 2 , by reacting a mycophenolic acid ester of Formula (IV) in which R is as defined above, with a metal salt of cyanic acid. The reactions may be carried out in an inert solvent or in an excess of one of the reactants. Reaction (i) is preferably conducted in the presence of an acid binding agent, e.g. a tertiary organic amine which may be an excess of the amine of formula HR<SP>1</SP> or sodium or potassium bicarbonate. Reaction (ii) is preferably carried out in the presence of a strong acid (e.g. HCl, H 2 SO 4  or a trihalogenoacetic acid) using sodium or potassium cyanate. Any reactive or labile substituents in the amine HR<SP>1</SP> may be suitably protected before the preparative reaction. Compounds of Formula (II) above are prepared by subjecting mycophenolic acid to a conventional esterification procedure and then reacting the ester with phosgene. Pharmaceutical compositions having anticancer and anti-tumour activity comprise a mycophenolic acid derivative of Formula (I) hereinbefore, together with a pharmaceutically acceptable carrier or diluent.
Patent GB-507924-A (GB)
Title: Improvements in or relating to means for locking nuts on bolts
IPC: F16B39/10
Filed: 1937-12-23
Abstract: 507,924. Locking nuts. BATTEN, E. L. Dec. 23, 1937, No. 35611. [Class 89 (i)] Material for forming locking washers is provided in the form of a metal strip with sinuous edges, and perforated at intervals, the perforations B being slightly off the centre line of the strip. It may be cut into suitable lengths, placed on the bolts under the nuts, and parts of the severed piece are then bent to engage the nut and the edge of the work.
Patent GB-897674-A (GB)
Title: Improvements in and relating to moulds and other foundry devices in a plurality of parts
IPC: B22C21/10
Filed: 1960-10-19
Abstract: 897,674. Moulds; patterns. COMPAGNIE DE PONT-A-MOUSSON. Oct. 19, 1960 [Nov. 16, 1959], No. 35808/60. Class 83 (1). [Also in Group XXV] Parts of a core box A, B, a mould, a pattern or like foundry article are located with respect to each other by at least one pin 9 which is secured to a semi-circular section recess in one parting face and engages a similar recess in the adjacent face.
Patent GB-838645-A (GB)
Title: Improvements in or relating to rotary and semi-rotary valve gear
IPC: F15B13/02
Filed: 1957-05-23
Abstract: 838,645. Valves; charge pumps. POTT, L. May 23, 1957, No. 35833/56. Classes 7(2) and 7(6) A rotary valve 23, Fig. 1, has a flow passage 28, 29, extending through the valve spindle 26, or directly through the valve body, to regulating parts in the end face of the valve body, the valve being urged towards its seat by a spring 24 or by a fluid pressure thread unit and having a transverse shaft 10 geared to the spindle. In Fig. 1, the passage 28, 29, forms an inlet passage co-operating with a part 20 in the valve seat and a passage 34a delivers the exhaust to an outlet passage 15 in the valve casing. The driving shaft 10 meshes with a bevel wheel 25, keyed to the swindle 26, against which the spring 24 reacts. In Fig. 2 the valve 68 has inlet control passage 73 fed with air under pressure by a compressor 122 driven through gearing 103, 106, 107, 101, from the valve spindle 104. Deflector blades 125 are provided in the compressor inlet. An exhaust passage 74 in the valve discharges into a recess 60 connected to exhaust ports 59. In Fig. 5 the valve 181 of Fig. 1 is combined with a fluid pressure device comprising a piston 162 supplied with pressure fluid through passage 186 so that the piston urges the valve towards its seat 170.
Patent GB-1173860-A (GB)
Title: Geometrical Isomerization of 1,4-Dienes
IPC: C07C5/25
Filed: 1968-07-26
Abstract: 1,173,860. Isomerization of halogenated 1,4- dienes. E.I. DU PONT DE NEMOURS & CO. 26 July, 1968 [1 Aug., 1967], No. 35908/68. Heading C2C. [Also in Division C5] A halogen substituted 1,4-diene which is not an equilibrium mixture of its geometrical isomers may be geometrically isomerized so as to form an isomeric mixture having an isomer ratio closer to its equilibrium composition by heating to its isomerization temperature in the presence of at least 0À1% by wt. of an isomerizing agent being (a) sulphur, (b) selenium, (c) nitric oxide, (d) SO 2 , (e) a compound which generates SO 2  under the process conditions, (f) a polysulphide, (g) a thiol, (h) a.sulphonyl halide or (i) a sulphinyl chloride. Specifically mentioned are 3,3,6-tribromo-1,4-hexadiene; 6-bromo, -1,4-hexadiene; 4,6-dibromo-1,4-hexadiene; and 3,6-dichloro-2,5-dimethyl-1,4-hexadiene.
Patent GB-984137-A (GB)
Title: Spark ignition apparatus
Inventor: JUKES NORMAN ALFRED
IPC: F02P3/08
Filed: 1961-10-06
Abstract: 984,137. Ignition systems. JOSEPH LUCAS (INDUSTRIES) Ltd. Oct. 2, 1962 [Oct. 6, 1961], No. 35981/61. Heading FIB. Spark ignition apparatus comprises in combination first and second terminals 3, 4 which in use are connected to a source of direct or rectified alternating current, an ignition coil having a secondary winding 6 which in use is connected to the sparking plugs of an engine in turn and a primary winding 7 one end of which is connected to the first terminal 3 and a semi-conductor controlled rectifier having its anode and cathode connected between the other end of the primary winding and the second terminal 4, the arrangement being such that when in use a suitable signal is applied to the gate terminal of the controlled rectifier to render it conductive a high voltage will be developed in the secondary winding, whereafter the back e.m.f. developed in the primary winding will serve to cut-off the controlled rectifier. Suitable means for applying pulses to the gate are described in Specification 926,523 referred to.
Patent GB-1142364-A (GB)
Title: Modifiers for vinyl halide polymers
IPC: C08F285/00
Filed: 1966-08-11
Abstract: 1,142,364. Sequentially polymerized polymers. ROHM & HAAS CO. 11 Aug., 1966 [25 Aug., 1965; 18 Feb., 1966], No. 36015/66. Headings C3G and C3P. A sequentially emulsion polymerized acrylic polymer comprises (A) a cross-linked rubbery polymer which has a glass transition temperature not exceeding - 30‹ C. and which contains at least 80% by weight of mers derived from one or more alkyl acrylates having 3 to 8 carbon atoms in the alkyl group, (B) a crosslinked aromatic polymer which is attached to said rubbery polymer (A) and which contains at least 80% by weight of mers derived from at least one monovinyl aromatic compound, and (C) a hard polymer of monoethylenically unsaturated monomers which contains at least 80% by weight of mers derived from one or more alkyl methacrylates containing 1 to 4 carbon atoms in the alkyl group and which is attached to (A) and (B). The term " sequentially emulsion polymerized polymers " means homo- or copolymers which are prepared by the aqueous emulsion technique and in which successive monomer charges are polymerized in the presence of a preformed latex prepared from a prior monomer charge in the preceding stage, substantially no new additional and distinct particles being formed after the first stage of polymerization. The polymers may be incorporated into a composition comprising (I) a vinyl chloride polymer containing at least 60% by weight of vinyl chloride mers and (II) 1-50% by weight, based on the vinyl chloride polymer, of the acrylic polymer. In the examples polymers are prepared from n-butyl acrylate, methyl methacrylate, 1,3-butylene glycol dimethacrylate, 1,3-butylene diacrylate, 2-methoxyethyl acrylate, ethoxy-, propoxy-, isopropoxy-, butoxy-, hexoxy, 2-ethylhexoxy- and octoxyethyl acrylate, styrene and divinyl benzene; aqueous sodium lauryl sulphate, glacial acetic acid, diisopropyl benzene hydroperoxide and sodium formaldehyde sulphoxylate. The polymers are compounded with P.V.C., a modifier, a fatty acid ester and stearic acid process lubricant and liquid organotin mercaptide stabilizer.
Patent GB-388530-A (GB)
Title: Improvements in or relating to alternating current relay apparatus
IPC: H01H51/30
Filed: 1931-12-31
Abstract: 388,530. Electromagnetic switches. GRASEBY, R. C., Kingston By-Pass Road, New Malden, Surrey. Dec. 31, 1931, No. 36064. Addition to 367,433. [Class 38 (v).] In the electromagnetic remote-control switch arrangement described in the parent Specification in order to economize the H.F. currents employed the armature of the operating electromagnet and of the latching electromagnet each controls a switch in the circuit of the other electromagnet so that after the operation of either electromagnet its circuit is immediately broken at the switch controlled by the other armature, the movement of the armature of the energized electromagnet preparing the circuit of the other electromagnet. As shown in Figs. 1 and 2 the armatures 3, 20 of the electromagnets 2, 18 carry pins 31, 33 controlling auxiliary switch contacts 32, 34 which are connected as shown in Fig. 2. Thus.after electromagnet 2 has been energized by its controlling frequency and its armature 3 has been moved and locked in the attracted position as shown the contacts 34 in series with this electromagnet are opened so that the controlling current flows in the electromagnet 2 for a short time only. The armature 3 in its retained position closes contacts 32 in series with the electromagnet 18 and a condenser 26 so that when the different controlling frequency is supplied this electromagnet may be energized and attract its armature which in turn releases the armature 3. During this action the contacts 32 in series with the electromagnet 18 are opened and the contacts 34 in series with electromagnet 2 are closed in readiness for a subsequent energization of this electromagnet by its controlling frequency. The mechanical interlock between the two armatures consists of a shaped pin 17 adapted to engage in a notch 24 in the arm 21 of the armature 20, the pin 17 after escaping from the notch 24 bearing against the arm 21 to hold the armature 21 in the attracted position. The interlock between the two armatures may alternatively, however, be associated with the contacts 7, 8 of the controlled circuit.
Patent GB-364283-A (GB)
Title: Improvements in or relating to tables
IPC: A47B35/00
Filed: 1930-12-01
Abstract: 364,283. Ironing-boards. GREEN, M., 43, Lordship Park, Stoke Newington, London. Dec. 1, 1930, No. 36125. [Class 138 (ii).] A table comprises a pivoted part carrying an ironing board so that the board may be moved over the table surface, which otherwise is unobstructed, or may be turned away and out of sight, leaving the table surface quite unobstructed. Fig. 5 shows a table wherein a portion of the top is cut away, and a flap 2, pivoted at 5, 6 to removable parts 3, 4 of the top is invertible so as to bring an ironing board 9 into a position above or below it. In either position the table flap 2 is supported by slides 7 in guides 8. The board 9 is pivoted at 11, and set by means of a spring ball catch 13 in the flap 2 engaging with a recess in the strut 15. It may be moved into a position at rightangles to that shown, where it is secured by a spring ball catch 17. In a modification, the flap 19, Fig. 7, is hinged at 25 to the table top 1, and an ironing board 9 is pivoted to it. The flap 19 may be turned over to form an extension of the table top. In the position shown it is secured by U-shaped clips 30.