baber/WOPTO huggingface dataset:
Patent GB-339574-A (GB)
Title: Improvements in bottle closures
IPC: B65D41/62
Filed: 1930-03-19
Abstract: 339,574. Bergius, W. M. March 19, 1930. Capsules and like closures.- In a bottle closure of the type including a stopper provided with a head of which the periphery coincides with that of the bottle neck, and a soft metallic capsule 3 enclosing the stopper head and the upper part of the bottle neck and having a perforation 4 in its upper face and a row of slots 5 in its circumferential face, the capsule is provided with two incisions 6 each extending from the perforation to a slot and defining the boundary of a sector which, being separated from the remainder when the stopper has been removed, facilitates the complete removal of the portion of the capsule removed with the stopper.
Patent GB-372042-A (GB)
Title: Improvements in or relating to hammering tools for use in excavating, mining, quarrying and the like
IPC: B25D11/06
Filed: 1931-03-23
Abstract: 372,042. Excavating &c. BAILLIE, S., Pool Hayes Colliery, Short Heath, near Wolverhampton. March 23, 1931, No. 8859. [Class 68 (i).] A hammering tool for excavating, mining, &c. comprises a rotary member or pair of members 1, a hammer 9 freely movable vertically in frames 10 beneath the members 1 and a chain &c. 11 secured to the hammer and having a pin 12 engaging internal recesses 1d in the members 1 whereby upon rotation of the latter the hammer is raised and released automatically in its highest position. The rotary members may take the form of two parallel discs having rings 1b secured to their adjacent faces, the rings being formed with recesses 1d on their inner peripheries. Alternatively, a single disc may be used, Fig. 3, having a diametral slot 1f and recesses 1d to accommodate the pin 12, the disc being supported by rollers on its outer periphery. The disc may be driven through gearing from a motor mounted on the frame 10 or from a remotely disposed motor through a flexible shaft. The whole mechanism may be enclosed or mounted in an open frame provided with handles.
Patent GB-455710-A (GB)
Title: Improvements in the manufacture of cyanine and related dyes
IPC: C09B23/10
Filed: 1935-03-21
Abstract: Cyanine and related dyes are prepared by condensing one molar proportion of a cyclammonium salt containing a quinoline nucleus and having a cyano group in the 4-position with respect to the nitrogen atom, with about one molar proportion of a cyclammonium salt containing an a - or g -reactive alkyl group or of a compound containing a reactive methylene group.  A basic condensing agent may be present during the reaction.  In examples: (1) 4-cyanoquinoline methiodide is condensed with 1-methylbenzthiazole ethiodide in alcohol and in presence of potassium hydroxide, and similarly with 2,3,3 - trimethylindolenine quaternary salts or with 1-methylbenzoxazole quaternary salts; (2) 4-cyanoquinoline methiodide is condensed with 2-ketodihydrothionaphthen in presence of finely divided potassium carbonate and alcohol; (3) 4-cyanoquinoline methiodide is condensed with 3-ethylrhodanine in alcohol and in presence of potassium carbonate; the latter can be replaced by triethylamine, N-methylpiperidine, sodium carbonate or sodium hydroxide, and other lower aliphatic alcohols may be used as a diluent; (4) 4-cyanoquinoline methiodide is condensed with 1-methylbenzselenazole ethiodide in alcohol and in presence of potassium carbonate.  Reference is also made to the use as starting materials of quaternary salts of quinaldine, b -naphthoquinaldine, lepidine, m -methylnaphthathiazoles, m -methylnaphthoxazoles, 3-alkylrhodanines, 3-aralkylrhodanines, 3-arylrhodanines, barbituric acid, thiobarbituric acid, pyrazolones, thiopyrazolones, 2 - ketodihydrothionaphthen, malonic acid, benzoylacetonitrile.  It is stated that many of the dyes described are sensitizers for photographic emulsions, particularly gelatino-silver halide emulsions.
Patent GB-294967-A (GB)
Title: Improvements in and relating to air compressors
IPC: F02B71/06
Filed: 1927-04-02
Abstract: 294,967. Pescara, R. P. April 2, 1927. Actuating pumps by fluid pressure motors ; regulating compression.-An air compressor comprising an internal combustion motor cylinder in which pistons combined with compressor pistons move oppositely, the return strokes being effected by compressed air remaining in the compressor cylinders, has the return stroke assisted by an inert gas such as the motor exhaust gas compressed into a chamber or chambers 32, 33 by the piston movements. Channels 38, 39 leading from a tank containing the inert gas under pressure are caused to communicate momentarily with the chambers by slots 42, 43. The firing point, or the fuel mixture, or both, may be regulated e.g. the lever 50 of the interrupter may be connected by a rod 49 with a cam 47 controlling the needle valve 45 of the carburetter. Specifications 268,773 and 268,782 are referred to.
Patent GB-513123-A (GB)
Title: Improvements in changing display apparatus
IPC: G09F11/12
Filed: 1938-03-25
Abstract: 513,123. Changing signs. SLACK, G. E. March 25, 1938, No. 9160. [Class 3 (i)] Apparatus comprising independent rolled - up display sheets which travel around a closed path at part of which they are automatically unrolled for display has two parallel operating chains 24, each furnished with three operating members 25, 26, 28. Rear guides 5 for the spindles 6 of the spools 7 carrying the sheets 8 form a reservoir down which the spools travel by gravity, star-wheels 30 at the bottom serving to hold up the column of spools. The member 25 forms a hook which first strikes the star-wheel 30 and rotates same through part of a revolution to free the bottom spool 7 and hold up the remainder. It then takes up the spool spindle 6 and proceeds to lift same to the top of the viewing space. At the start of its upward journey the spool strikes a pivoted catch 27 and brings its lower leg into the path of a rod 10 holding the free end of the display sheet 8, thus retaining same at the bottom of the viewing space and causing the sheet to unwind as the spool rises. Near the top of its path the member 28, consisting of a roller, engages one of a series of radial projections 29 on the inner side of a notched disc 21 and turns same so that a notch 20 'takes under the spindle 6 and removes the spool from the hook 25. The sheet is then fully extended and remains so while the members 25, 26, 28 travel down the rear stretch of the chain path. When the next bottom spool 7 is released by the star-wheel 30, its spindle 6 strikes a pivoted cam 31, the top end of the previous spool from the catch 27 to the underside of the member 26, which thus allows the sheet to wind slowly on its spool as the second spool rises. The disc 21 is again given a part turn and this transfers the first spool to the top of the guides 5 to rest on the column of spools. A spring strip is inserted between the plies of material forming the sheet 8, to cause the sheet to tend to roll up, The chains 24 may travel at different speeds at varying parts of their path, or may move intermittently.
Patent GB-913360-A (GB)
Title: Improvements in or relating to variable frequency oscillators
IPC: H03C3/40
Filed: 1959-03-17
Abstract: 913,360. Frequency modulation. PHILIPS ELECTRICAL INDUSTRIES Ltd. March 17, 1959 [March 20, 1958], No. 9215/59. Class 40 (5). Two oscillators 3,1,5 and 3,2,6 of different natural frequency are coupled to produce in a common load, e.g. tuned circuit 4, a common frequency of intermediate value determined by the instantaneous voltage outputs of the two oscillators, each controlled by modulation applied in push-pull at 7, 8 to control grids of the oscillator valves to alter their respective amplification factors and the feedback circuits comprise, as shown, a balanced T hybrid network such that each oscillator alone would produce a zero amplitude output at the anode of the other oscillator. The frequency sweep is therefore maximized. Stray capacitances 11, 12 form part of the frequency determining circuits 3, 4, 5, 11 and 3, 4, 6, 12 respectively. Reactances 5, 6 may be replaced by phaseshift networks in the grid circuits of valves 1, 2. In Fig. 3, the two oscillator outputs and inputs are formed by a pair of magic T's coupled by a wave-guide 23, the output being derived from arm 10<SP>1</SP>, and the arm 24 terminating in a matched impedance. An insert 29 alters the relative phase shift between the feedback circuits, and 25, 26 are tuning screws. In a modification conductive rectangular block is hollowed out to form two parallel magic T's having a short wave-guide section forming the non-coplanar arms of the T's and the feedback path, the other non-collinear side arms forming the oscillator output 10<SP>1</SP> and the matched termination 24 respectively. The frequency swing, being inversely proportional to the feedback group delay, is thereby increased.
Patent GB-177986-A (GB)
Title: Packer for wells
IPC: E21B33/12
Filed: 1921-03-29
Abstract: 177,986. Fondren, W. W. March 29, 1921. Stuffing-box joints. - In a well, the annular space between concentric tubes is closed by a packing ring 7, preferably of soft metal, which is held between threaded members 6, 2 of the inner tube and is deformed on rotating the member 6 relatively to the member 2.
Patent GB-416593-A (GB)
Title: Improvements in or relating to knitted fabrics and to methods and machines for producing such fabrics
IPC: D04B1/06
Filed: 1933-03-28
Abstract: 416,593. Knitting. WILDT, E., and WILDT & CO., Ltd., Adelaide Works, Leicester. March 28, 1933, No. 9363. [Class 74 (ii).] A knitted fabric rendered antiladdering by knitting or interlocking a wrap-thread 15 into each of all or nearly all the wales of the fabric has two or more ground-threads 10, 11 knitted together in reverse plated relation for forming patterns. The ratio of the diameter of the combined groundthreads to the diameter of the wrap thread is preferably at least 1.4 : 1. The wale-threads may be shogged from one wale to an adjacent wale. The wrap-threads may be interlocked with the ground fabric in the manner described in Specification 313,657, [Class 74 (ii)]. Specifications 327,958, 327,988, [both in Class 74 (ii)], 376,350, and 376,736 also are referred to.
Patent GB-578155-A (GB)
Title: Improvements relating to catalytic isomerisation processes and reformed catalysts therefor
IPC: C07C5/27
Filed: 1942-07-07
Abstract: Normal paraffin hydrocarbons are isomerized by means of an aluminium chloride catalyst on a porous carrier, which is regenerated by heating in oxygen to burn off carbon and impregnating with aluminium chloride to restore that lost by volatilization.  In an example, butane to which 2-18 per cent of hydrogen chloride has been added is treated at 150-450 DEG  F. at a pressure of 200 lb. per sq. in.
Patent GB-103074-A (GB)
Title: Improvements in or relating to Reinforcing Tape and Method of Making said Tape.
Inventor: ANGIER EDWARD HERBERT
IPC: D21H27/34
Filed: 1916-07-04
Abstract: 103,074. Angier, E. H. July 4, 1916. Reinforced paper and cardboard.-Box corners are reinforced by tape consisting of paper layers 1, 3, with the grain running longitudinally, and having transverse threads 11 preferably embedded in waterproof adhesive 5 connecting the layers. One side 7 is gummed. In making the tape, a wide strip may be built up, and a single reinforcing-thread fed preferably perpendicularly from side to side as the layers are stuck together. The loops of thread are afterwards cut off and the strip subdivided longitudinally.
Patent GB-771906-A (GB)
Title: Improvements in flexible tubes
Inventor: MOSELEY JOHN
IPC: B29D23/00
Filed: 1955-03-31
Abstract: 771,906. Flexible tubes. COMPOFLEX CO.. Ltd. Feb. 7, 1956 [March 31, 1955], No. 9435/55. Addition to 743,693. Class 99(2) In the tube described in the parent Specification which comprises inner and outer helical coils and an intermediate body portion formed by an outer layer of synthetic rubber and an inner layer of material which is substantially non-extensible and impervous to gases, the inner layer is of "Terylene" or "Melinex" (Registered Trade Marks) film. Preferably, the film is applied over the inner coil in sheet form and by lapping, or in strip form by winding helically, the rubber layer being a preformed tube and applied over the film with the aid of compressed air. The coils may be of metal, but the outer coil may be of a synthetic plastic material or synthetic rubber.
Patent GB-1132036-A (GB)
Title: Process for producing l-proline
IPC: C12P13/24
Filed: 1966-03-04
Abstract: 1,132,036. Production of L-proline. KYOWA HAKKO KOGYO CO. Ltd. 4 March, 1966 [6 March, 1965], No. 9570/66. Heading C2C. L-Proline is obtained by culturing a mutant strain of Micrococcus glutamicus which requires for its growth (1) isoleucine, (2) arginine, citrulline or ornithine, or (3) methionine or Vitamin B 12  in an aqueous nutrient medium containing a carbon source, a nitrogen source, inorganic substances and small amounts of nutrients required for the growth of said strain under aerobic conditions. Specified microorganisms are Micrococcus glutamicus ATCC numbers 19223, 19224 and 19225. The fermentation may be effected at 23‹ to 37‹ C. at a pH of 5 to 6À5 and the product may be isolated by passing the mixture through an ion-exchange resin. The culture medium may be a natural or synthetic organic culture medium containing conventional nutrients.
Patent GB-1519651-A (GB)
Title: Apparatus for dispensing spaced deposits of particulate material
IPC: A24D3/02
Filed: 1976-03-10
Abstract: 1519651 Metering apparatus BRITISH AMERICAN TOBACCO CO Ltd 10 March 1976 [16 July 1975] 09571/76 Heading B8N An apparatus for dispensing particulate material in spaced deposits, e.g. a filter additive 40 to a continuously moving tobacco smoke filter material 12, comprises a rotatable transport member 50 with a series of openings 58 in its rim 52 and a material supply 64 to the interior of the transport member. The supply 64 comprises a body with an inlet 66 and defining a chamber 72 defined by walls 72, 74 and the inside of the rim of the transport member 50. The exists of the openings 58 are controlled by a fixed curve member 106. The amount of material dispensed may be varied by altering the speed of rotation of the transport member or by altering the position of the supply body. The supply is mounted on a bearing 84 for this purpose and mounted by a bridge-piece 88 connected to a block 92 adjustable along a slot 102 in a fixed bracket. Since the material is fed by gravity to the openings the position of the chamber varies the degree of filling of the openings. The filter material 12 is supported by a back-up roller 22 with a peripheral groove which cooperates with the periphery of the transport member to maintain the filter material in the form of a channel to receive the additive material 40.
Patent GB-1453704-A (GB)
Title: Substituted ureas and thio-ureas and processes for their  preparation
IPC: C07C335/08
Filed: 1972-12-28
Abstract: 1453704 Urea and thiourea derivatives SCIENCE UNION ET CIE SOC FRANCAISE DE RECHERCHE MEDICALE 13 Dec 1973 [28 Dec 1972] 9620/75 Divided out of 1453703 Heading C2C Novel compounds of Formula I in which each of R 1  and R 2 , which are the same or different, is a hydrogen atom, a C 1-6  alkyl radical, an unsubstituted cyclopropyl radical or a cyclopropyl radical bearing one or more C 1-6  alkyl radicals, R 3  is a hydrogen atom or a C 1-6  alkyl radical, R<SP>1</SP> is a C 1-6  alkyl radical, n<SP>1</SP> is 0, 1, 2 or 3, n<SP>11</SP> is an integer from 2 to 4, and when Z is a chlorine or bromine atom, A is an oxygen or sulphur atom, and when Z is a hydroxyl radical, A is an oxygen atom, are obtained by condensing a cyclopropylmethylamine of formula either (a) with a #-haloalkyl isocyanate or isothiocyanate of formula in which A is O or S and Hal is Cl or Br, or (b) with an aryl haloformate of formula in which Hal is F or Cl and Ar is a phenyl radical optionally substituted by one or more radicals of electrophilic character (e.g. -NO 2 ) to obtain a carbamate of formula and condensing the latter with an aminoalkanol of formula Compounds of Formula I in which A is oxygen and Z is Cl or Br are also obtained by halogenation of the corresponding compound of Formula I in which Z is OH. The cyclopropylmethylamine starting materials are obtained by condensing a corresponding cyclopropyl ketone with hydroxylamine, reducing the oxime thus produced with Na/alkanol or with a mixed alkali metal hydride and recovering the cyclopropylmethylamine which may be alkylated by condensation with an aldehyde followed by reduction of the Schiff base with alkali metal borohydride.
Patent GB-791791-A (GB)
Title: A process for the synthesis of peptides
IPC: C07K1/10
Filed: 1956-03-28
Abstract: Peptides are prepared by coupling an amino acid or a peptide with a free carboxy group and blocked amino group with an amino acid or peptide with a free amino group and blocked carboxy group by means of an alkoxyacetylene.  The alkoxyacetylene may be derived from methanol, ethanol, propanol, isopropanol, butanol, amyl alcohol.  The temperature of coupling may be 20-60 DEG  C.  The amino groups may be blocked by carbobenzloxy, sulphonyl, phthaloyl, benzyl, or triphenylmethyl groups.  Solvents such as ether, dichloromethane, ethyl acetate, dioxane, or nitromethane may be employed.  Mercapto groups present must be protected, e.g. by benzyl, but hydroxy groups need not be protected.  In examples: (1) N-carbobenzloxy - 1 - leucyl - glycine - ethylester is prepared from glycine ethyl ester and N-carbobenzyloxy - 1 - leucine in presence of methoxyacetylene; (2) N-carbobenzyloxy-S-benzyl - cysteinyl - glycine ethyl ester is prepared from N-carbobenzyloxy-S-benzyl-cysteine, glycine ethyl ester, and ethoxy acetylene; (3) N-carbobenzyloxy-S-benzyl-glulathione diethyl ester is prepared from S-benzyl-1-cysteinyl-glycine ethyl ester, N-carbobenzyloxy-1-glutamic acid ethyl ester, and methoxyacety-lene; (4) tosyl-1-isoleucyl-glycine ethyl ester is prepared from tosyl-1-isoleucine, glycine ethyl ester, and methoxyacetylene; (5) N-(N1.N1-dibenzylglycyl)-dl-serine is prepare from N,N-dibenzylglycine, dl-serine ethyl ester, and methoxyacetylene, followed by saponification; (6) N - trityl - dl - alanyl - tryptophane methyl ester is prepared from N-trityl-dl-alanine, tryptophane methyl ester, and ethoxy acetylene; (7) N-carbobenzyloxy-glycyl-1-phenylalanine-benzyl ester is prepared from N-carbobenzyloxy glycine, 1-phenylalanine benzyl ester and methoxy acetylene; (8) N-phthaloyl-1-alanyl-1-prolinebenzyl ester is prepared from N-phthaloyl-1-alanine, 1-proline benzyl ester and methoxy acetylene; (9) N-carbobenzyloxyglycyl-glycine ethyl ester is obtained from N-carbobenzyloxy-glycine, glycine ethyl ester hydrochloride, and methoxy acetylene.
Patent GB-274182-A (GB)
Title: Improvements in or relating to circular saws
IPC: B23D61/04
Filed: 1926-04-13
Abstract: 274,182. Wagner, K. April 13, 1926. Saws.-The teeth of circular metal-cutting saws are made with narrow staggered rectangular slots e, f to accommodate cuttings. Two slots may be made in each tooth. In the case of detachable teeth k the slot m is made in the front.
Patent GB-828004-A (GB)
Title: Improvements relating to electrical soldering irons
Inventor: BREWSTER SYDNEY
IPC: B23K3/03
Filed: 1957-03-25
Abstract: 828,004. Soldering irons. ANGLO-NETHERLAND TECHNICAL EXCHANGE Ltd. March 25, 1957, No. 9712/57. Class 83 (4). [Also in Group XI] An electric soldering iron comprises a ceramic tube 15 wound with an element 18 insulated by a fused glass sheath 22 and housed together with an interposed shock-absorbing glass fibre sleeve 21 within a metal shaft 3, e.g. of stainless steel or nickel chrome alloy, carrying at one end a moulded bush 5 screwed into an insulating handle 1, e.g. of synthetic plastic, and at the other end a detachable bit 4, e.g. of chromiumcopper alloy, pure nickel or a combination of both, which is provided with a clamping-ring 14 and a hollow skirt split at 13. Wires 8 and 9 connect the element ends 20 and 17 to tags 7 which together with an earthing tag 10 project from the bush 5. Glass is fused around each end of the tube 15 to hermetically seal the element. A supply lead 2 passes through a central bore in the handle 1, its outer sleeve being formed with an enlargement 12 located and clamped in an enlarged portion of the bore.
Patent GB-236679-A (GB)
Title: Improvements in and relating to seats, mattresses and the like
IPC: A47C23/053
Filed: 1924-04-17
Abstract: 236,679. Elson, W. E. April 17, 1924. Mattresses.-In a spring mattress of the kind comprising longitudinal and transverse bars B and helical springs A, the springs are secured to the bars by means of bent metal slotted clips C of the form shown in Figs. 5 and 6.
Patent GB-107808-A (GB)
Title: Improvements in or relating to Buffer and other Springs Constructed with India-rubber.
Inventor: SPENCER ALFRED GEORGE
IPC: F16F1/40
Filed: 1916-07-11
Abstract: 107,808. Spencer, A. G., and Hine, C. W. C. July 11, 1916. India-rubber springs. - Bufler and similar springs, formed of rings of rubber secured to annular metal plates, have the plates roughened for the attachment of the rubber rings by the formation of grooved corrugated or toothed surfaces such as spiral or other threads b on concentric grooves. Similar interposed plates may be employed.
Patent GB-1404308-A (GB)
Title: Containers having closure caps
IPC: B65D41/18
Filed: 1972-03-02
Abstract: 1404308 Safety closures B T REYMES-COLE and S C AINGE [trading as BRC PATENTS DEPT 2] 3 Aug 1972 [11 May 1971 21 Aug 1971 2 March 1972 17 March 1972] 53788/70 39338/71 9814/72 and 12673/72 Heading B8T A container and cap form a safety closure, either or both being of flexible material to allow distortion whereby interengaging shoulders on container and cap may be disengaged by manual pressure. The closure may be formed by a cap with a groove 6 into which fit projections 5 on the container neck, the cap being resiliently flexible to allow it to be squeezed at points on a diameter normal to that passing through the projections 5, the neck having recesses 7 which permit the cap to deform and so disengage the groove 6 and projections 5. A rubber sealing disc 4 is provided. In modifications, projections (9), Fig. 5 (not shown), on the cap are engaged with ribs (11) on a bottle neck; a plug stopper having a retaining rib (19) on its underside engages shoulders (20) of a flexible container, Fig. 8 (not shown); and the cap structure may be weakened opposite the projections on the container.
Patent GB-1060594-A (GB)
Title: Gas or air filtering apparatus with counter-flow cleaning
IPC: B01D46/04
Filed: 1964-03-09
Abstract: 1,060,594. Filtering gases. SOC. ANON. DES ESTABLISSEMENTS NEU and G. DEWAILLY. March 9, 1964 [March 11, 1963], No. 9832/64. Heading BIT. Gases entering through a conduit 2 are filtered by passing through a number of sleevetype filter elements 6. As shown, the filter elements are mounted in three compartments 3, 4, 5 associaed with a common hopper 1, the gases being drawn through the compartments by individual fans or pumps 11, 12, 13. For the purpose of cleaning the elements 6, the extractors 11, 12, 13 are stopped, one at a time, as determined by a programme device 10. As shown, the extractor 13 is stopped whereby the gases are drawn by the other two extractors 11, 12 in a reverse direction through the elements 6 in the compartment 5 so that these elements are cleaned. In a modification, (Fig. 6, not shown) the gases are forced into the groups of filter elements by fans or pumps situated at the entry ends of the elements, and each group has its own hopper. As in Fig. 2, the groups of elements are cleaned in turn by stopping the related fan or pump to cause a reverse flow of the gases.