baber/WOPTO huggingface dataset:
Patent GB-741248-A (GB)
Title: Improvements in the separation of optical antipodes
IPC: C07B63/02
Filed: 1953-05-04
Abstract: Optical antipodes are separated by bringing together urea with racemic mixtures which form inclusion compounds therewith, separating the inclusion compounds containing different antipodes by fractional crystallization and splitting them up into their components.  Urea is added in either the solid form or dissolved, for example, in methyl alcohol.  Inclusion compounds containing either the d-form or l-form are produced and are separated by fractional crystallization due to their different solubilities. By innoculation of the saturated solution with a crystal of the appropriate structure, crystal containing predominantly the dextro or the laevo-rotatory component may be obtained.  The crystals which separate are split up by treatment with methyl alcohol or water.  The process is repeated by adding more urea to the mother liquor.  The opposite antipode which is enriched in the mother liquor may be obtained as an inclusion compound by appropriate innoculation.  In examples: (1) a methyl alcoholic solution of urea is added to a racemic mixture of 2-chloroctane and the inclusion compound which separates on cooling to 7 DEG  C. is split up with water to give the d-isomer; the l-form is obtained by adding more urea to the mother liquor and cooling to -6 DEG  C; (2) a solution of the heptyl ester of a -chlorobutyric acid in methanol is treated with urea, heated, then innoculated with l-2-chloroctane while cooling and the resulting crystals are dissociated with water to give the dextro form of the ester; (3) diamyl malate is treated with urea as in (2), innoculated with the urea adduct of citronellyl caprinate while cooling and the resulting adduct dissociated to give the laevo form of the ester. Specified examples of further substances which may be resolved are given, including chloroparaffins, secondary alcohols, esters of halo-, hydroxy-, amino- and methyl-substituted carboxylic acids, diesters of substituted dicarboxylic acids, and carboxylic esters of secondary alcohols.
Patent GB-1464492-A (GB)
Title: Error detecting and correcting methods and circuits
IPC: H04L25/08
Filed: 1975-03-25
Abstract: 1464492 Error detection and correction for data storage INTERNATIONAL BUSINESS MACHINES CORP 25 March 1975 [25 March 1974] 12306/75 Heading G4C Errors in a bit sequence in which all bits identified by signal transitions are separated by at least one bit identified by no-transition, are detected and corrected by detecting two adjacent "transition" bits, detecting which of the immediately preceding and succeeding groups of "no-transition" bits contains the larger number of bits and interchanging one of the said two bits with an adjacent bit in the said larger group. The bit sequence is read from a magnetic medium and passed via a self-clocking-type detector into a shift register, logic responding to the shift register stages to perform the detections and control one of two pairs of stages during a shift to perform the interchange. The corrected bit sequence is shifted out to a further error correction circuit (not described). The bit sequence may be in ZM (zero modulation) form, which uses two bits 00, 01 or 10 to represent each data bit, selected according to the preceding bit, so that no two 1's will occur adjacent each other and no more than three consecutive 0's will occur.
Patent GB-567536-A (GB)
Title: Improvements relating to resilient couplings
IPC: F16D3/76
Filed: 1943-07-29
Abstract: 567,536. Flexible couplings. MACBETH, C. July 29, 1943, No. 12346. [Class 80 (ii)] A resilient coupling comprises annular concentric driving and driven members a<1> b<1>, of circular or other cross-section, adapted to form between them not less than three annular spaces which are occupied by rubber or like portions bonded to the members. Preferably the radial widths of the spaces progressively increase, the inner space being the narrowest. Excessive distortion of the rubber may be prevented by projections k, on one member a<1> engaging with clearance recesses in a flange c to which the other member b<1> is fixed. The members a<1>, b<1> may be stampings or pressings.
Patent GB-772836-A (GB)
Title: Production of amino-acid derivatives
Inventor: LAWSON ALEXANDER
IPC: C07D307/32
Filed: 1953-05-04
Abstract: The invention comprises (1) lactones of 3 - amino - 4 - hydroxy - 4 - phenyl - butanoic acid and 3 - benzamido - 4 - hydroxy - 4 - phenyl-butenoic acid and (2) a process for the preparation of lactone derivatives of aspartic acid, namely lactones of N-acylated olefinically unsaturated amino-hydroxy-carboxylic acids and azlactones of alpha-amido-beta-carboxyethyl ketones, i.e. lactones of compounds of the formula R1 . CO . CH(NHR)CH2 . COOH or R1.CO.CH(N : RH)CH2.COOH, wherein R is an acyl radical such as a benzoyl or thiobenzoyl radical and R1 is an aryl, substituted aryl or heterocyclic group such as a phenyl, substituted phenyl or pyridyl radical, by reacting an anhydride containing the cyclic group R1, for example benzoic, m- or p-acetoxybenzoic or nicotinic anhydride, with an N-acylated aspartic acid or its anhydride in a non-aqueous, nonbasic liquid medium.  Suitably the N-acylated aspartic acid derivative is benzoylaspartic anhydride or thiobenzoylaspartic anhydride and the reaction medium is an organic liquid having a boiling-point near the reaction temperature.  The lactone or azlactone obtained, e.g. 3-benzamido-4-hydroxy-4-phenylbut-3-enoic lactone, may be hydrogenated and hydrolysed to give the corresponding lactone of a saturated aminohydroxy-acid, e.g. the lactone of beta-aminogamma - hydroxy - gamma - phenyl - butyric acid.  If the cyclic group R1 is derived from m-or p-acetoxybenzoic anhydride, the lactone first formed may be hydrolysed and debenzoylated by mild hydrogenolysis to give 3-amino-4-(m- or p-hydroxyphenyl)-4-hydroxybut-3-enoic lactone.  In examples: (1) benzoic anhydride is treated with benzoylaspartic anhydride to give 3 - benzamido - 4 - hydroxy - 4 - phenylbut - 3 - enoic lactone and a small amount of alphabenzamido-propiophenone-beta carboxylic acid azlactone (identified by hydrolysis and treatment with thiocyanate to give 2-mercapto-4-phenylglyoxalinyl-5-acetic acid), the unsaturated lactone is hydrogenated to 3-benzamido-4-hydroxy-4-phenyl-butanoic lactone, followed by hydrolysis to 3-amino-4-hydroxy-4-phenylbutanoic lactone; (2) p-acetoxy benzoic anhydride is reacted with benzoyl aspartic anhydride to give 4-p-acetoxyphenyl-4-hydroxy-3-benzamido-but-3-enoic lactone which is hydrolysed to 4-p-hydroxyphenyl-4-hydroxy-3-benzamido-but-3-enoic lactone which is reduced with sodium amalgam to 3-amino-4-p-hydroxyphenyl - 4 - hydroxybut - 3 - enoic lactone, and (3) nicotinic anhydride is reacted with benzoylaspartic anhydride to give 3-benzamido-4-hydroxy-4-b -pyridylbut-3-enoic lactone.
Patent GB-117984-A (GB)
Title: Improvements in or relating to Mops and other like Rubbing or Polishing Appliances.
Inventor: PATON JAMES WALLACE
IPC: A47L13/255
Filed: 1917-08-29
Abstract: 117,984. Paton, J. W. Aug. 29, 1917. Mops; pads and like rubbing and polishing appliances. - A holder for mops, pads, and like appliances comprises a sheetmetal blank 1 with a downturned flange 10 around its edge against the outside of which the woven part of the mop or flexible portion of the pad is fastened by hooks 13 and eyes 14 or like means. A tapering gap is formed in the rear of the blank in which the ends of the mop or pad surround are secured. The handle 5 is adjustably carried in ears 3, 4; one ear being bent up out of the blank and the other secured to the blank by lugs 9. Instead of using hooks and eyes, the flange 10 may be formed with a number of holes through which short pieces of wire are threaded. In a modified construction, the blank is replaced by an oval or other block of wood hauing a sheet-metal surround to which the mop or pad is secured as before, or the surround may be dispensed with and the securing hooks fastened directly to the block of wood. Specification 5347/15 is referred to.
Patent GB-860769-A (GB)
Title: Copying paper and method of manufacture
Inventor: JR EDMUND NEWTON HARVEY
IPC: B41M5/10
Filed: 1959-04-13
Abstract: 860,769. " Carbon " type transfer copying paper. KEE LOX MANUFACTURING CO. April 13, 1959, No. 12406/59. Class 96. " Carbon " type copying paper is made by coating at least one surface of paper with a transfer composition including (a) 10 to 50 parts by weight of a polyvinyl chloride plastisol dispersion resin, (b) from 10 to 20 of a non- volatile plasticizer therefor, (c) 5 to 75 of a colourant, and (d) 10 to 50 of a non-volatile, non-plasticizing oily diluent colour-carrier, the volume of which is at least as great as that of the plasticizer and which exudes with the colour under the pressure of writing &c., and heating the composition to about 350‹ F. for about 5 secs. or more. Constituent (a) may, alternatively, be a polyvinyl chloride-acetate copolymer, it is of spongy form, filled with (c) and (d); (b) may be e.g. dioctyl phthalate, or tricresyl-, or trioctyl-phosphate, -adipate, -azelate, or -sebacate; (c) may be a pigment or a dye, e.g. an alkali blue etc.; and (d) may be oleic acid or a paraffinic or naphthenic oil. Perchlorethylene, surface-active agents, and resindegradation inhibiting agents may also be included. The coating may be 1 mil thick and a knife-coater with electrical heaters may be used.
Patent GB-130458-A (GB)
Title: Improvements in or relating to Controlling Devices for Heating and Ventilating Plants.
Inventor: WELTERT FRANZ
IPC: G05D23/12
Filed: 1918-07-30
Abstract: 130,458. Weltert, F. July 30, 1918. Drawings to Specification. Heating water.-In a steam-heated waterheater, the supply of steam is controlled by two thermostatic cells, one surrounded by the hot water, and the other by the condensate from the heating-pipes.
Patent GB-1083453-A (GB)
Title: Improvements relating to the production of bituminous emulsions
Inventor: CURRY DENIS WILLIAM
IPC: C08L95/00
Filed: 1963-03-29
Abstract: A cationic bituminous emulsion of water content less than 30% contains up to 10% of a polymeric elastomeric material such as natural or synthetic rubber.ALSO:Cationic bituminous emulsions of low water content i.e containing less than 30% water are produced by cutting the viscosity of the binder and including in the emulsions up to 10% of a polymeric elastomeric material such as natural or synthetic rubber.
Patent GB-1199708-A (GB)
Title: Apparatus for Applying a Coating to an Elongated Article
Inventor: GUSEV VLADIMIR ALEXEEVICH
IPC: B28B19/00
Filed: 1969-03-10
Abstract: 1,199,708. Coating apparatus. SPETSIALIZIROVANNY STROITELNO-MONTAZHNY TREST " KIEVPODZEMDORSTROI ", 10 March, 1969, No. 12442/69. Heading B2L. Coating apparatus comprises a hollow cylinder 7 rotatable about its longitudinal axis and formed with circumferential apertures 8, whereby a coating medium can be passed through the latter on to an article being passed through the cylinder. As described, the apparatus is adapted to coat the exterior of pipes, and comprises a track supporting two carriages located one at each end of the rotary cylinder. In use, one carriage is rotated from the cylinder, a pipe is scoured at one end to damping means which extend from the carriage, the latter is advanced to position the other end of the pipe within the cylinder, and said other end is secured to clamping means extending from the other carriages. The carriages are then driven to move the pipe progressively through the cylinder, and heated bitumen is allowed to flow from a hopper located above the cylinder through the apertures formed therein and on to the pipe. A tape, such as polyvinyl chloride, is wound on to the coated surface of the pipe from a tape-carrying spool which is secured to the cylinder and rotates therewith.
Patent GB-921904-A (GB)
Title: Improvements in, or relating to, induction furnaces for vacuum operation
IPC: H05B6/26
Filed: 1959-04-13
Abstract: 921,904. Electric induction furnaces. O. JUNKER. April 13, 1959 [April 12, 1958; Nov. 13, 1958], No. 12478/59. Class 39 (3). In an industrial coreless induction furnace the crucible 3 is enclosed in a gas-tight receptacle which is surrounded by and accommodated within the coil 12 and the receptacle comprises a jacket 4 of which at least one longitudinal portion is composed of a non-conducting and heat-resistant synthetic material consisting of resin-bonded paper or the like, e.g. that sold under the Registered Trade Mark " Pertinax." As shown, the whole of the jacket 4 is made of such a material and it is relieved of the weight of the rest of the receptacle by supporting the upper end 7 thereof by means of a ring 9 supported on columns 10, gas-tight joints 5, 6 and 8 being provided. In another embodiment the jacket comprises an austenitic steel or other metal sleeve formed with one or more longitudinal slots in each of which is inserted a strip of the stated material, the weight of the upper part being carried, in this embodiment, by the metal sleeve. The columns 10 support also the yokes 13 of the coils 12. The jacket is cooled by U-shaped coolant-conducting pipes 15. The joint 6 and the upper anchorage 14 of each yoke 12 is such as to permit longitudinal movement of the jacket or yoke under the influence of temperature variations.
Patent GB-179429-A (GB)
Title: Improvements in cutting and burnishing broaches
IPC: B23D43/02
Filed: 1921-05-02
Abstract: 179,429. Wakefield, J., Cowgill, E. H., and Rolls-Royce Ltd. May 2, 1921. Tools.-An adjustable broach consists of a mandrel a carrying a number of burnishing or cutting discs b, Figs. 1 and 2 respectively, of substantially conical section, separated by washers c. The mandrel is screwed at a<3> to take a nut d<1>, which tightens the discs against a shoulder a<4>, thereby expanding them diametrically. A slot a<2> is provided for securing to a machine.
Patent GB-794351-A (GB)
Title: Improvements in or relating to the coating of metals with polytrifluorochloroethylene
IPC: C23C22/24
Filed: 1955-04-29
Abstract: A metal body having a strong impervious film of hard, solid polytrichlorofluoroethylene plasticised with plastic, waxy polytrifluorochloroethylene bonded thereto is made by chemically etching the metal surface by treatment with an inorganic reagent, applying the mixture of polytrifluorochloroethylenes, heating the thus-applied mixture and quenching it.  Examples describe the etching of kettles or sheets having aluminium surfaces, in one instance with a preliminary etch in caustic, in aqueous solutions of sodium chromate or dichromate and sulphuric acid, or molybdenum trioxide and sulphuric acid, and of the surface of a pressed steel container with a saturated aqueous solution of zinc dihydrogen phosphate.  The treated surfaces are then coated by filling the articles, or by immersion in or spraying with dispersions, either aqueous or in organic liquids, containing a mixture of high molecular weight polytrifluorochloroethylene and wax-type polytrifluorochlorethylene. Several layers are applied, with intermediate heating.  The coated articles are finally baked at temperatures between 450 DEG  and 510 DEG  F., and then suddenly cooled by quenching in water.  Aluminium so coated may be used for chemical equipment and structural purposes. Other metals such as magnesium, zinc, copper, titanium, molybdenum, manganese, nickel or lead, may also be coated.ALSO:Dispersions of hard solid polytrifluorochloroethylene plasticized with plastic waxy polytrifluorochloroethylene in water or organic liquids, e.g. mixtures of xylene, ethyl benzene and toluene, are used for coating the etched surfaces of metals.ALSO:Metal surfaces are inorganically chemically etched prior to coating with polytrifluous-chloroethylene. In examples (1) aluminium is treated with an aqueous solution of sodium chromate and sulphuric acid; (2) aluminium is given a preliminary etch in caustic, and then immersed in an aqueous solution of sodium dichromate and sulphuric acid; (3) aluminium-clad aluminium alloy is treated with the same chromic-sulphuric solution; (4) steel is treated with saturated aqueous zinc dihydrogen phosphate; (5) aluminium is treated with an aqueous solution of molybdenum trioxide and sulphuric acid.
Patent GB-118675-A (GB)
Title: Improved Method of Making Corrugated Tubes or Cooling Elements.
Inventor: HARRIS THOMAS HENRY
IPC: B21C37/15
Filed: 1917-09-06
Abstract: 118,675. Harris, T. H. Sept. 6, 1917. Radiators.-Corrugated tubes for internal-combustion engine radiators &c. are formed by folding a blank of thin sheet copper, brass, &c. so that the edges are in alinement, interposing one or more strips of lead or other pliant material of the desired thickness, and then corrugating by rollers or in an angle-bending press, the free edges being at the same time temporarily pressed together. The interleaf of lead &c. is then removed bodily, the edges springing apart sufficiently to allow this removal. The edges are then joined by soldering, brazing, &c. The edges of the blank may be previously turned in upon themselves to form a filling or distance piece. The lead &c. may be rolled flat and used again. The interspace between the walls of the tube may vary from one end of the tube to the other.
Patent GB-484755-A (GB)
Title: Improvements in or relating to vacuum cleaners
IPC: A47L5/28
Filed: 1937-05-04
Abstract: 484,755. Vacuum cleaners. AIR-WAY ELECTRIC APPLIANCE CORPORATION. May 4, 1937, No. 12780. Convention date, May 7, 1936. [Class 8 (i)] The outlet from the fan casing of a vacuum cleaner 14 is formed with a T -union 18a each arm of which is rotatably connected to a pipe 16 which join to form a common outlet 24. The ends of the arms 18a are of reduced cross-section so that the pressure reduction at this point will prevent the joint leaking. In a modification the arms 18a fit outside the flange 22a and a packing ring is used.
Patent GB-401974-A (GB)
Title: Improvements in spindles for net making machines
IPC: D04G1/00
Filed: 1933-05-02
Abstract: 401,974. Net-making. OKUMA, Y., 12, San-Chome, Fujitsuka-Cho, Higashi-Ku, Nagoya-Shi, Aichi-Ken, Japan. May 2, 1933, No. 12781. [Class 74 (i).] A spindle for use in net-making machines comprises a casing 1 with a tubular extension 2 an outlet tube 3, a base member 4, a spring loaded guide block 11 mounted in a slot 13 in the casing, and a ratchet 22 in a housing 19 pivoted at 20 and a spring 29 engaging a pawl 27. A spring 24 presses the ratchet and the thread against an arched recess 14 in the guide and restrains the issue of the thread from the spindle until the tension reaches a certain amount, when the pawl is moved out of engagement with the ratchet. The base 4 has feet 4<11> engageable with the head 101 of a spindle carrier 10, a clip 37 for holding the lower end of the bobbin in the casing and a guard ring 33 with knurled peripheral edge for co-operating with a twisting device.
Patent GB-418904-A (GB)
Title: Improvements in or relating to the manufacture of sliding clasp fasteners
IPC: A44B19/48
Filed: 1933-05-02
Abstract: 418,904. Sliding-clasp fastenings. LIGHTNING FASTENERS, Ltd., Imperial Chemical House, Millbank, London. May 2, 1933, No. 12783. Convention date, May 2, 1932. [Class 44.] Fastener elements are sorted, in readiness for feeding to a clinching portion of a machine for the manufacture of stringers for sliding-clasp fasteners, by feeding a loose collection of elements towards a narrow slot having notches in one of its edges to accept the interlocking projections on the elements, the elements being fed in such a way that the majority of them in the neighbourhood of the slot are lying with their flat surfaces parallel to the slot. In the arrangement shown the elements pass from a hopper 8 to an inclined shoot 10 where those lying flat and with their interlocking projections upward are able to pass a slot 12 formed by a spaced plate 11 having notches 13 in its bottom edge to accept the projections on the elements. Those elements which fail to pass are returned by a sweeper bar 18 rotated through the slot 12 by the arms 19. The elements are subsequently orientated by angular baffle plates 31, 32, 33 on the shoot 10 so as to fall straddlewise on to a rail 34 whence they are fed to the clinching portion of the machine. The shoot and hopper are vibrated by a cam-driven hammer head 25. The notched slot may be formed by a suitably spaced grooved roller carrying a spring-pressed sweeper bar. Specifications 384,705 and 418,905 are referred to.
Patent GB-782652-A (GB)
Title: Improvements in or relating to the extraction of sugar from sugar beet cossettes
IPC: C13B10/08
Filed: 1953-01-05
Abstract: 782,652. Extracting sugar beet. HEINRICH, K. Jan. 5, 1953 [Jan. 3, 1952; March 5, 1952; July 29, 1952; Dec. 17, 1952], No. 12793/55. Divided out of 782,651. Class 127. A process for the extraction by liquid of sugar from sugar beet cossettes in a continuous manner involving heating of the cossettes before their transference to a diffusion apparatus comprises conveying fresh cossettes from an inlet to an outlet of a closed trough by means of a rotating screw, the spaces in the trough being completely filled, and passing extraction liquid from the diffusion apparatus through the cossettes in the trough transversely to their direction of movement, through a filter screen into a chamber extending the full length of the trough, withdrawing from the chamber the liquid of sugar concentration so increased, heating it, passing some of the heated liquid transversely through the cossettes in the central region of the trough, through the filter screen and into the chamber, and passing the rest of the heated liquid transversely through the fresh cossettes entering the trough, through the filter screen into a separate compartment of the chamber, and withdrawing liquid from the separate compartment. With the apparatus of Figs. 1, 2 and 9, which comprises an enclosed arrangement of a trough and a rotatable tubular sieve extending over the length of the trough and divided by a partition R into portions H<SP>1</SP> and H<SP>2</SP>, a mixture of finely cut beet cossettes supplied from a hopper S<SP>1</SP> and hot extraction liquid supplied from a pipe j is converted to a mash in section N of the trough by rotating arms U, is conveyed in section O of the trough by a rotating worm, is stirred in section P of the trough by rotating arms W, and is taken from the section P to the diffusion apparatus, e.g. is pumped by a pump 100 through a pipe C to the apparatus of Specification 782,651. Extraction liquid from the diffusion apparatus, e.g. juice conveyed in a pipe J from the apparatus of Specification 782,651, enters the section P of the trough at G and flows through the mash therein, the greater part of such liquid passing into the portion H<SP>1</SP> of the tubular sieve; liquid is withdrawn by a pump 101 from the portion H<SP>1</SP> and is heated at 108, a part of the heated liquid is passed by a pipe D<SP>1</SP> through a port D of the worm section O of the trough to plasmolize the mash therein, and a part is heated further at 107 and passed into the pipe J. Liquid passing from the section N of the trough into the portion H<SP>2</SP> of the tubular sieve is taken off by a pipe 105a for sugar manufacture. The tubular sieve is cleaned by strippers U<SP>1</SP> as it rotates.
Patent GB-1222011-A (GB)
Title: Gas liquid contact apparatus for gas cleaners
IPC: B01D53/18
Filed: 1968-03-15
Abstract: 1,222,011. Gas-liquid contact tray. AMERICAN AIR FILTER CO. Inc. 15 March, 1968, [24 April, 1967], No. 12811/68. Heading B1R. [Also in Division F2] A gas-liquid contact tray 4 with apertures 6 (Fig. 2) has a grid 12 formed of crossing sets of bars 13 and 14 supported above the tray by legs 15, each aperture having an associated valve-disc 21 with a slot 22 mounted on a U- shaped supporting element 16, secured at its upper end to the grid, to allow vertical movement of the disc above its aperture. In a modification the elements 16 are formed by bending the bars of the grid. In a further modification (Fig. 6) bars 33 are mounted below the tray and the valve-discs 21 are supported by elements 32 projecting upwardly through the apertures and having travel-limiting discs 35 at their upper ends.