baber/WOPTO huggingface dataset:
Patent GB-807850-A (GB)
Title: Improvements in or relating to bis amino and n-acylated amino ethyl disulphide compounds
Inventor: JOULLIE MAURICE
Filed: 1956-11-26
Abstract: The invention comprises symmetrical bis-(a -aminoethyl or a -acylamidoethyl)- disulphides of the general formula <FORM:0807850/IV (b)/1> wherein R1 is an alkyl group having up to 4 carbon atoms and R2 is an unsubstituted amino, a carboxylic acylamido or a carboxylic acylimido group.  They may be prepared by heating, in an anhydrous organic medium, a compound of the formula <FORM:0807850/IV (b)/2> wherein R1 and R2 are as above defined and X represents an alkali metal atom, with a compound of the formula Y-CH2-S-S-CH2Y, Y representing a halogen atom, in proportions such that two molar equivalents of the first reagent react with one of the second reagent.  Preferably X represents sodium or potassium and Y chlorine. The organic medium may be benzene, toluene or other hydrocarbon or preferably absolute ethanol.  The crude product may contain in addition to the desired di-sulphide, partial hydrolysis products. The crude material or that purified by fractional crystallization may be used to prepare cystine as described in Specification 807,849.  In typical examples: (1) bis-chloromethyl sulphide and sodio-ethyl acetamido malonate are refluxed in benzene and thereafter the product is stripped of benzene, washed with water and crystallized from ethanol yielding bis - (a  - acetamido - a ,a  - dicarbethoxyethyl)-disulphide; minor amounts of partial hydrolysis products including compounds having the formul  <FORM:0807850/IV (b)/3> are also formed; (2) as in (1), the organic reaction medium, however, being absolute ethanol and the product is crystallized from a mixture of xylene and cyclohexane.  Other examples describe the preparation, in like manner, of (3) bis - (a  - formamido - a ,a  - dicarbethoxyethyl)-disulphide; (4) bis-(a -phthalimido-a ,a -dicarbethoxyethyl) - disulphide; (5) bis - (a  - benzamido - a ,a  - dicarbethoxyethyl) - disulphide; and (6) bis-(a -amino-a ,a -dicarbethoxyethyl)-disulphide, which is identified by treating it with acetic anhydride whereby the acetamido compound of (1) is formed.  Sodium ethyl acetamido malonate may be prepared by reacting sodium on ethyl acetamido in xylene but preferably by gradually adding an anhydrous solution of ethyl acetamido malonate in benzene to a solution of sodium in ethanol and then boiling until no more ethanol distils over.
Patent GB-448936-A (GB)
Title: Manufacture of polymethine dyestuffs
IPC: C09B23/10
Filed: 1934-12-17
Abstract: Polymethine dyes are prepared by reacting an indoline compound which contains in a -position to the nitrogen a reactive methylene group wherein one hydrogen atom is replaced by the aldehyde group, with an equimolar proportion of a partially hydrogenated indol compound unsubstituted in b -position or of a partially hydrogenated quinoline unsubstituted in a - or g -position, in the presence of a condensing agent.  As condensing agents phosphorus oxychloride, piperidine, or acetic anhydride are specified, and the products are presumed to have a dimethine chain linking the indoline and hydrogenated indole or quinoline rings.  The aldehyde derivatives are prepared by the process described in Specification 438,603.  In examples, 1.3.3-trimethylindoline-2-methylene-o -aldehyde is condensed with dihydro - a  - phenylindole, dihydro - a  - methylindole and tetrahydroquinoline in presence of phosphorus oxychloride in each case; 1.3.3-trimethyl-5-methoxyindoline-2-methylene-o -aldehyde is condensed with tetrahydroquinoline in presence of phosphorus oxychloride.  In each case the products dye tannin-mordanted cotton yellow shades.
Patent GB-873385-A (GB)
Title: Improvements in high density ferrites
IPC: C04B35/26
Filed: 1958-11-11
Abstract: The density of cubic ferrimagnetic ferrites is increased by heating the ferrite in a reducing atmosphere between 1100 DEG C. and 1500 DEG C. and then heating in an oxidising atmosphere between 900 and 1500 DEG C. to restore it to its former state of oxidation.  The ferrite may have the formula MFe2O4 where M is Mg, Mn, Zn, Cd, Cu, Ni, Co, or may be solid solutions of two or more of these.  During the first heating in a reducing atmosphere which may be CO, CO + CO2, "cracked gas" water gas or mixtures thereof part of the ferrite is reduced to a non-magnetic phase having the formula MO2FeO.  The second heating in air or oxygen restores the material to its former state of higher oxidation with an increase in density to more than 99% of the theoretical single crystal density from a previous value of 97%. Magnetic properties are also improved.  As an example MgCO3 and Fe2O3 were mixed in 95% ethyl alcohol for 10 minutes in a colloid mill, dried and heated for 10 hours at 1050 DEG C.  The resulting material was ground in 95% alcohol, dried, sieved, pressed into bars or rings under 5000 p.s.i.  The bodies were fired in CO2 at 1450 DEG C. for 12-15 hours to effect the reduction and subsequently heated for 378 hours at 1250 DEG C. to effect oxidation to MgFe2O4.
Patent GB-1313384-A (GB)
Title: Process for the production of photographic materials
IPC: G03C1/76
Filed: 1970-07-27
Abstract: 1313384 Photographic film materials having improved frictional properties AGFA-GEVAERT A G 27 July 1970 [31 July 1969 26 Feb 1970] 36236/70 Heading G2C [Also in division C3] Photographic films and papers having reduced surface friction and increased scratch resistance are made by adding to the outer layer which may be a protective layer or the emulsion layer, an  aqueous emulsion of dimethylpolysiloxane containing from 10-40% by weight of the polysiloxane and, based on the latter, from 1-50% by weight of ethanol, the emulsion being added in such quantities that the coating composition for the layer contains from 1-50 g. of the dimethylpolysiloxane and from 0À1 to 25 g. of ethanol per kg of dry weight of binder for the layer. The layer binder may be gelatin and the emulsion may also contain silica having a particle size of less than 4 Ám. Polyglycol ether and alkyl sulphate emulsifiers may also be present.
Patent GB-368284-A (GB)
Title: Improvements in or relating to bi-metallic articles
IPC: B22D19/08
Filed: 1930-12-02
Abstract: 368,284. Metal rods and bars. WHITE, A. E., 5, Quality Court, Chancery Lane, London.-(Copperweld Steel Co. ; Glassport, Pennsylvania, U.S.A.) Dec. 2, 1930, No. 36300. [Class 20 (ii).] Compound wire, strip, or other metal article comprises a ferrous or other metal base 2, Fig. 3, with a coat of another metal whereof the portion 3a is non-porous and made by casting while the outer portion 3b is porous and electrodeposited. An iron block 2, Fig. 4, is cleaned and fluxed, placed in a mould 4, which supports it by means of a recess 5 and lugs 6, and coated by casting copper thereon. The compound block may then be rolled or otherwise worked and is given a coat 3b of copper electrolytically to produce the desired ratio of copper to iron.
Patent GB-1138969-A (GB)
Title: Improvements in or relating to indole derivative and method for its production
Inventor: TROXLER FRANZ
IPC: A61K31/00
Filed: 1966-01-13
Abstract: 1,138,969. Indole derivatives. SANDOZ Ltd. 13 Jan., 1966 [1 Feb., 1965], No. 36327/68. Divided out of 1,138,968. Heading C2C. 4 - (2 - Hydroxy - 3 - isopropylaminopropoxy)- indole and its acid addition salts are prepared by reacting an alkali metal salt of 4-hydroxyindole with epichlorohydrin, heating the product with isopropylamine or N-isopropylbenzylamine in the presence of an acid binding agent (which may be an excess of the amine) and removing the benzyl group (if present) by hydrogenolysis, optionally followed by salt formation. The compounds of the invention are #-adrenergic blocking agents, and may be administered in the form of pharmaceutical preparations containing them together with a carrier.
Patent GB-1048567-A (GB)
Title: Improvements in and relating to heat exchangers
IPC: F28F9/013
Filed: 1963-09-16
Abstract: 1,048,567. Tubular heat-exchangers. SULZER BROTHERS Ltd. Sept. 16, 1963 [Oct. 9, 1962], No. 36389/63. Heading F4S. A heat-exchanger of circular cross-section has a. heat-exchange surface subdivided into thin heat-exchange elements 1, Fig. 1 (not shown), grouped in 4 sectors I ... IV and, in each sector, arranged in arcuate layers a ... f such that one side of each element is parallel with the radial plane bisecting the angle between the radial planes bounding that sector, the ends of the elements in the various layers lying on arcs of equal diameter off-set from one another by the length of the elements. The elements comprise parallel tubes 40, Fig. 4 (not shown), arranged in two .parallel planes, the tubes in the two planes being staggered relative to one another. The ends of adjacent pairs of tubes are connected by bends 41 to form a continuous sinuous passage through the elements which can be connected by headers extending along layers a . . . f and through which a heating medium flows. Perpendicular to their axes the tubes have fins 42 and spacer plates 43 with ears 44 adapted to bear against the fins of adjacent elements. The gaps between elements 1 at the boundaries between sectors and the centre of the heatexchanger have special heat-exchange elements 3 of triangular cross-section. The remaining gaps may be filled by box-like elements. In another example, Fig. 2 (not shown), the sectors comprise only 5 layers and the centre contains elements 1 disposed parallel to elements in opposite sectors. In a further example, Fig. 3 (not shown), the elements are disposed in 6 sectors and the centre contains elements 1 disposed parallel to elements in opposite sectors.
Patent GB-176565-A (GB)
Title: Improvements in the construction of all-metal wings for aeroplanes
IPC: B64C3/00
Filed: 1920-12-30
Abstract: 176,565. Mooney, D. J., and Brown, E. E. Dec. 30, 1920. Planes, construction of; framework.-The covering of aeroplane wings, tail planes &c. is composed of thin sheet-metal strips of the same width as the distance between the ribs, the strips being attached to the ribs by wire fastenings d, inserted through holes in the covering a and the ribs b. The fastenings may be tightened by a strip f, which may be flat, curved, or thickened in the middle; and the covering strips a may overlap, as shown in Fig. 10. The fastenings may be twisted together at e, Fig. 2, and may be along, or diagonally to, the strips, and may be secured by a drop of solder on the twist. They may completely embrace the rib, or they may take the form of a single straight wire passing through the rib from bottom to top, there being a twisted head at the lower end, and the other end being twisted and soldered when in place. Fig. 10 shows another type of fastening in which the end of a wire i is flattened as at k, inserted in slots, and then turned, the other end being bent over or pushed through a hole in the covering to prevent its returning. The wire fastening m, shown in Fig. 11, has its ends bent back so that when it is inserted in a burned hole through the covering and rib the ends spring out and prevent its return. These fastenings may be tightened by a strip e having slots to pass under the heads of the fastenings. The ends of the covering-strips may be united at a spar in a similar manner, an angle or box-shaped packing piecebeing inserted if necessary, or by a turned-over clinched joint, or by a split tube which is slid over their turned-over ends. According to the Provisional Specification, the covering of the leading edge may be " a separate piece joined to a straight strip at each side, or one strip bent to an angle and shaped to fit at the join on the underside "; and the joints may be made airtight by being painted with celluloid dope before wiring, and again after fastening.
Patent GB-925957-A (GB)
Title: Improvements in and relating to elastic fluid turbines
IPC: F01D25/26
Filed: 1959-10-27
Abstract: 925,957. Turbine casings. PRVNI BRNENSKA STROJIRNA ZAVODY KLEMENTA GOTTWALDA, NARODNI PODNIK. Oct. 27, 1959 [Oct. 28, 1958], No. 36481/59. Class 110 (3). An elastic fluid turbine for operation with high temperature fluid has an outer shell 1 and an inner shell 2 between which is disposed a jacket 9 open at one end and tightly fixed at the other end to the inner shell at a point adjacent a shaft seal 6, 7. The space 10 between the jacket and the inner shell 2 communicates through openings 8 with the space between the two parts 6, 7 of the shaft seal with the result that the temperatures on the inner and outer surfaces of the inner shell are substantially equal.
Patent GB-920197-A (GB)
Title: Improvements in or relating to electrical control arrangements for induction generators
Inventor: WILLIAMS FREDERICK CALLAND
IPC: H02P9/14
Filed: 1958-11-14
Abstract: 920,197. Induction generators ; automatic speed and voltage control systems. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Nov. 9, 1959 [Nov. 14, 1958], No. 36636/58. Classes 35 and 38 (4). The output frequency of an induction generator VIM driven by a motor MDM is kept constant by automatically altering the effective pole-pitch of the stator windings with respect to the rotor motion in the manner described in Specification 760,250 or 788,235. The generator is excited by a synchronous motor SM, whereby the output voltage of the main machine is automatically stabilized by a voltage-sensing circuit AMP1 which controls the field rheostat P1. A tacho-generator TC driven by the synchronous motor detects any deviation in the generated frequency and acts through a control equipment CE to modify the generator stator pole-pitch so as to correct it. In the particular form described the correction is made by rotating the stator core parts to change the effective angle of the stator windings with respect to the rotor motion, as described in Specification 760,250.
Patent GB-1427737-A (GB)
Title: Situation monitoring  means
IPC: G08G1/123
Filed: 1972-08-07
Abstract: 1427737 Selective signalling S C MURISON 8 Oct 1973 [7 Aug 1972] 36712/72 Heading G4H An installation includes a radio telephone, a navigational aid whose electrical outputs represent position, and data transmission means using less than one quarter of the audio frequency channel bandwidth of the radio telephone, these co-operating to send by the radio telephone and data transmission means a representation of the installation's position and fitness for purpose in response to an electrical signal from the radio telephone's receiver. The installation may be in a lorry, the navigational aid being of the radio continuous wave hyperbolic type with manual adjustment means. A central station interrogates such installations in turn by sending addresses over the radio telephone, equality of the received address with that on a removable card causing the transmission over the radio telephone using a narrow central frequency band of frequency-coded bits representing the lorry's reference no., its position in hyperbolic co-ordinates, its state of fitness (the outputs from pressure-responsive switches relating to the load platform, doors and seats) manually-input coded information, and parity. At the central station, the position and fitness are displayed in bit form on lamps, parity error also being indicated. If a lorry does not give a valid response to an interrogation it is subsequently interrogated more frequently in the cycle, at the expense of the other lorries. Application to a lifeboat is also mentioned, the navigational aid being a sextant.
Patent GB-1075516-A (GB)
Title: Oven cleaner and method of using the same
IPC: C11D7/06
Filed: 1964-09-08
Abstract: A liquid oven or grill cleaning composition comprises water, at least one alkali metal hydroxide, furfuryl alcohol, and tetrahydrofurfuryl alcohol.  A glycerol or glycol humectant, and a surfactant may also be included. From 1 to 10% by weight alkali metal hydroxide may be used.  Preferably the ratio furfuryl: tetrahydrofurfuryl alcohol is at least 1 : 1, and the alcohol mixture constitutes 0.1-5% by weight of the composition. Suitable surfactants include sulphate esters, alkyl and aryl sulphonates, amines and quaternary ammonium compounds, particularly the ammonium salt of the sulphate ester of an alkylphenoxy polyoxy ethylene ethanol and sodium dodecyl diphenyl oxide disulphonate.  The preferred humectant is propylene glycol. Water constitutes 50-95% by weight of the composition.  The cleaner may be used at room temperature but is preferably heated or applied to a warm oven.  It can be ejected as a fine foam from an aerosol spray employing butane as propellant.
Patent GB-302361-A (GB)
Title: Improvements in stiffening fabric and method of making the same
IPC: D06M13/08
Filed: 1928-12-13
Abstract: 302,361. British Celanese, Ltd., (Assignees of Dreyfus, C.). Dec. 15, 1927, [Convention date]. Artificial silk, fabrics containing.-Stiff fabrics are made of yarns of cellulose acetate or other organic derivatives of cellulose with or without other fibres such as cotton, wool, mohair, or silk. The artificial silk yarns are given a high twist and are preferably above 200 denier. The fabric may also be made of cellulose acetate yarn spun from short cellulose acetate filaments. The fabrics are stiffened by treating them with solvents, softening-agents or swelling-agents such as ethylene dichloride diluted or not, the fabric becoming stiff on evaporation of the liquid.
Patent GB-1525858-A (GB)
Title: Process for preparing conjugated diene butyl rubber
IPC: C08F8/00
Filed: 1975-09-08
Abstract: 1525858 Preparation of conjugated diene butyl rubber EXXON RESEARCH & ENG CO 8 Sept 1975 [18 Sept 1974] 36825/75 Heading C3P  Conjugated diene butyl is prepared by contacting halogenated butyl rubber for 0À2 to 4 hours with a carboxylate of a metal of Group Ib, IIb, IVb or VIII of the Mendeleef Periodic Table in an amount of 0À05 to 0À5 moles per gm-atom halogen in the rubber as dehydrohalogenation agent, a hydroxide or carboxylate of a metal of Group Ia or IIa of the Mendeleef Periodic Table and limiting the amount of water present to less than 2 moles per mole of dehydrohalogenation agent by a nitrogen purge or by the presence of 2 to 10 moles of CaO per gm atom of halogen in the halogenated butyl rubber, the product copolymer having per 100 gm. a halogen content below 1À1 Î 10<SP>-2</SP> gm. In examples axylene solution of brominated butyl rubber is contacted with zinc naphthenate, naphthenic acid and calcium hydroxide, either a nitrogen purge or the addition of CaO being used. In comparative examples chlorinated butyl rubber is also used.
Patent GB-1405591-A (GB)
Title: Brake fluid level control
IPC: B60T17/22
Filed: 1971-11-22
Abstract: 1405591 Stoppers J E WITT 9 Aug 1972 [10 Aug 1971 14 Sept 1971 31 Dec 1971 22 Nov 1971] 37564/71 42805/71 61062/71 and 36826/72 Heading B8T [Also in Division F2] A device for maintaining the fluid level in a vehicle brake reservoir during bleeding of the brakes includes a closure member, for a brake fluid container, having air and fluid passages 8, 9 respectively, the upturned container being supported on the reservoir by external means such as a clip 10 or by means such as a lot 58, Fig. 5, forming part of the closure.
Patent GB-807863-A (GB)
Title: Improvements in or relating to the manufacture of food products
Inventor: JONES WILLIAM JOHN GLYDON
IPC: B29C48/09
Filed: 1955-12-22
Abstract: 807,863. Coating by extrusion. WALL & SONS Ltd., T. March 21, 1957 [Dec. 22, 1955], No. 36831/55. Class 87(2). [Also in Group VI] A food product, e.g. sausage meat is extruded through a tube 11 along with a surrounding skin forming solution through an annular orifice 14, into a precipitating bath to solidify the skin around the sausage meat. The skin forming solution forced up into the boss 8 passes through a filter gauge 17 on a backing plate 16 held in an annular plate 3 between gaskets 5, 6 sealing the discs 1 and 2. The meat tube 11 is screwed up or down to vary the orifice 14 and is secured by a lock nut 12 and is centred by screws 15a, 15b, &c. The casing forming solution may be a polyuronide such as a polygalacturonate, e.g. an alginate or a pectate or a protein solution known in textile making as a spinning solution. The casing may be e.g. 4 per cent. to 6 per cent. solution of sodium alginate, to which may be added fat emulsions or cellulosic compounds with added alkali, extruded into a bath of 10 to 15 per cent. weakly acid calcium chloride or 17 per cent. calcium acetate and then is passed into a water bath. A protein casing may be formed of 22 per cent. groundnut protein solution and 1À33 per cent. sodium hydroxide extruded into a bath of 22 per cent. sodium sulphate and into another bath of 22 per cent. sodium sulphate, 3 per cent. formaldehyde and sodium hydroxide to make a pH of 10À5. In the first bath in each case the sausage may take several turns round pulleys to lengthen the time in contact with the solidifying solution. Specifications 711,437 and 757,215 [both in Group IV(a)] are referred to.
Patent GB-1141038-A (GB)
Title: Improvements in or relating to electric switches
Inventor: WARD WILLIAM EDWARD
IPC: H01H13/28
Filed: 1965-08-27
Abstract: 1,141,038. Snap-action switches. PLESSEY CO. Ltd. 22 Aug., 1966 [27 Aug., 1965], No. 37027/65. Heading H1N. On depression of button 1 against a return spring 3, contact carrying portions 4 pivoted on link 2 snap into a position with their outer ends raised so that contacts 7 break with fixed contacts 8 and make with fixed contacts 9, a slight rubbing action providing cleaning. Parts 4, 2, 1 may be formed from an integral plastics piece. Contacts 7, 8, 9 are silver covered copper wires, and contacts 8, 9 connect to printed circuitry. The contact may alternatively be connected so as to provide a " normally closed " or " normally open " switch.
Patent GB-928035-A (GB)
Title: Improvements in or relating to the attachment of fishing hooks to lines
IPC: A01K91/04
Filed: 1960-10-29
Abstract: 928,035. Fishing tackle. J. CHAPPELL. Sept. 19, 1961 [Oct. 29, 1960], No. 37229/60. Class 48. [Also in Group XXIII] A method of attaching a hook to a line comprises gripping the shank of the hook in a pair of jaw members 17, anchoring one end of the line to a tongue 27 on one of the jaw members 17, gripping the hook and an intermediate part of the line between finger and thumb with the line passing tautly from the tongue 27 through a slot 23 on a slidable clamp 22 holding the jaw members together, passing the free end of the line between the finger and thumb, winding a portion of the loop so formed around the shank to bind the line thereto, releasing the shank from the jaws and pulling the loop through the binding coils to lock the line to the shank. The pair of jaw members 17 are loosely connected by a rivet 20 and are urged apart by a coil spring 24 or by a blade spring. The jaw members 17 have steel jaws 16 riveted thereto and disposed so that when the jaws 16 are pressed together the jaw members 17 diverge slightly towards the jaws 16. The lower jaw 16 has a single V groove or a pair of grooves of different sizes.