baber/WOPTO huggingface dataset:
Patent GB-599150-A (GB)
Title: Improvements in or relating to the catalytic isomerization of paraffinic hydrocarbons
IPC: C07C5/27
Filed: 1945-07-12
Abstract: In the isomerization of paraffins of at least four carbon atoms with aluminium chloride admixed with a substantial amount of alumina, and a halogen-containing promoter, the feed being admixed with an aromatic hydrocarbon as in the parent Specification, benzene is used in an amount of 0.15-0.25 per cent based on the volume of liquid feed.  Pentane is preferably isomerized in liquid phase at 175-225 DEG  F. using 5-30 per cent of A1C13 adsorbed on activated bauxite, 1 per cent by weight HC1, in the presence of 1 mol. per cent of hydrogen and 0.2 per cent by volume of benzene. Results are given for pentane isomerization in batch or continuous operation using varying proportions of added benzene. Specification 598,949, as open to inspection under Sect. 91, and U.S.A. Specifications 2,260,279 and 2,324,295 are referred to.
Patent GB-384197-A (GB)
Title: Process for producing tea entirely or almost entirely free from theine
IPC: A23F3/36
Filed: 1932-05-27
Abstract: A process for producing tea free from theine consists in moistening the leaf with water, extracting with an organic solvent for theine and treating the leaf with hot air or hot inert gases after removal of the greater part of the solvent.  The process may be interrupted one or more times in order to re-moisten the leaf with water. Solvents with a low boiling-point, such as methylene chloride, are used and the temperature of the leaf is not raised above about 65 DEG C.ALSO:A process for producing tea free from theine consists in moistening the leaf with water, extracting by an organic theine solvent such as methylene chloride, chloroform, benzene, &c., and treating the leaf with hot air or hot inert gas after removal of the greater part of the solvent.  The hot air treatment may occur under reduced pressure and the process may be interrupted one or more times in order to remoisten the leaf with water.  Solvents with low boiling points are preferred, and the temperature of the leaf is not raised above about 65 DEG .
Patent GB-1432344-A (GB)
Title: Pulse comubstion installations
IPC: F23C15/00
Filed: 1972-03-30
Abstract: 1432344 Combustion apparatus of the periodic combustion type UNIVERSITY OF BATH and R D PEARSON 5 April 1973 [30 March 1972] 15147/72 Heading F1L A combustion apparatus of the periodic combustion type suitable for heating water, includes a tubular combustion chamber 2 with a coaxial exhaust duct 12 spaced from a sharp-edged orifice 20 of the chamber, an air inlet duct 8 communicating with the space 22 between the orifice and exhaust duct with an aerodynamic valve arrangement at its inflow end inhibiting the outflow of air therefrom, and the combustion chamber, inlet duct and outlet duct are of such length as to produce resonant conditions upon combustion of fluent fuel in the chamber. As shown, the inlet duct 8 is coaxial with the exhaust duct 12 and is separated therefrom by a frusto-conical water jacket 16. A blanked-off frusto-conical sleeve 28 aligned with the inlet duct 8 forms the aerodynamic valve. Alternatively, the lip 26 on duct 8 may be directed inwardly. Radial vanes 31 in the inlet duct divide it to form longitudinal passages. A pressure jet atomizing burner nozzle 34 is supplied with fuel via a valve 44 during start-up when air is provided from a fan 32. Upon successful ignition, the rise in pressure is sensed by a probe 42 to open a valve 46. The valve 46 is similarly closed upon cessation of combustion. The fuel supply may be pulsed in phase with the resonant vibrations. Again, Fig. 3 (not shown), the combustion chamber (52) has a re-entrant orifice (54). The air inlet is formed as two pairs of perpendicular ducts (70), (72) swept back through 180 degrees parallel to the combustion chamber axis and of rectangular section diverging to circular cross-section at their inlet ends (74), (76). They have a common cylindrical outlet end (56) coaxial with the combustion chamber axis. One pair of ducts (72) are vertical and have an in-turned lip (80) at their inlet ends. The other pair have out-turned lips (78), and all have Helmholtz resonators (84), (86) aligned with them and the whole is positioned in a windbox (82) having a Venturi intake (90). A start-up fan (88) delivers air to ducts (72). The exhaust gases are used to heat water by passing through a helical smoke tube in an annular water chamber, or by passing through annular smoke ducts alternating with annular waterways in a cylindrical vessel.
Patent GB-267075-A (GB)
Title: Improvements in or relating to internal combustion engines
IPC: F02M1/00
Filed: 1926-06-16
Abstract: 267,075. Boyer, H. J., (Assignee of Rivoire, N. de). March 4, 1926, [Convention date]. Induction pipes, fittings for. - Screens 4 are placed in the induction pipe for preventing backfiring. They may be fixed within an enlarged part of the pipe by soldering, screwing, brazing &c., with or without the addition of an outer sleeve 11, or may be formed with flanges 7 registering with the flanges 2 of the induction pipe. Heating of the mixture is effected by means of a jacket 8 for the circulation of water, lubricating oil, or exhaust, and a tube 12 in communication with the jacket 8 may cross the induction pipe. Heating :fluid may also circulate within the gills 5 themselves. For an aircraft engine of 400 h.p. using petrol the gills 5 would be separated by 3 to 6 mm., and the length of the passages be from 30-60 mm. An additional gill 12 may be placed in the induction pipe. Instead of being plane, the gills may be cylindrical or conical and may be stepped.
Patent GB-378968-A (GB)
Title: Improvements in apparatus for straining or filtering fluids
IPC: B01D29/46
Filed: 1931-05-22
Abstract: 378,968. Filters. FULCHER, F. C., Broadlands, Manor Way, Purley, Surrey. May 22, 1931, No. 15167. [Class 46.] In filtering or straining apparatus for fluids, of the kind in which the fluid flows straight through fine slots formed between parallel filtering members provided with scrapers projecting into and moving along the slots, the filtering members are set in staggered or stepped relationship so that a graduated trapping or intercepting of foreign matter is obtained. The stepped discs 1, Fig. 1, are mounted on a rotatable shaft 2 and are spaced apart by washers 3 on rods 4. Cleaning- blades 5 are mounted on one or more spindles 6 so as to project between the discs 1. In the modification shown in Fig. 3 cleaning-blades 7 pass across between the discs 1. The blades may be fixed and the discs rotatable, or vice versa ; or both the discs and the blades may be rotatable. The blades may be fastened to the filter casing which may be fixed or rotatable. Scrapers 8, Figs. 5 and 8, may be provided for the edges of the discs. They may be fixed to the scrapers 5 or made in one with them. The discs may be circular or rectangular, and the filters may be arranged in parallel or series. Specifications 145,339, 215,098, 223,627, [all in Class 46, Filtering &c.], 367,379, 367,458, and 367,459 are referred to.
Patent GB-1483050-A (GB)
Title: Clamps for holding surgical retractors
IPC: A61B17/02
Filed: 1974-08-24
Abstract: 1483050 Clamps for surgical retractors J K HURSON 24 July 1974 [6 Aug 1973] 15178/77 Divided out of 1483048 Heading E2B A clamp for holding a surgical retractor comprises a base 39, a first jaw 40 fixed to the base and projecting therefrom, a second jaw 41 pivotally mounted at one end on the base and a knee linkage 45 connected to the second jaw for opening and closing the jaws. The knee linkage has a member 44 pivotally connected to jaw 41, the member 44 being pivotally connected to a member 49, which itself is pivotally connected to the base 39. Lever 43 connected to member 44 is used for opening or closing the jaw 41 towards or away from jaw 40. The clamp is fitted to a frame member 15 of a retractor frame by means of a mechanism 50 which operates similarly to the operation of jaws 40, 41 to hold the clamp on member 15.
Patent GB-960316-A (GB)
Title: Improvements in or relating to a process for the preparation of dialkyl 1,2-dibromo-2,2-dichloroethyl phosphates
IPC: C07F9/09
Filed: 1962-04-19
Abstract: A dialkyl 1,2-dibromo-2,2-dichloroethyl phosphate is obtained by reacting the corresponding dialkyl 2,2-dichlorovinyl phosphate with bromine in the presence of an inert solvent and of a catalytic amount of a compound yielding free radicals which do not react with any of the components of the reaction mixture. Specified free-radical-yielding compounds are hydrazine derivatives, e.g. hydrazine hydrohalides and dibenzoyl hydrazide, organometallic compounds, e.g. tetraethyl lead, and peroxidic compounds, the latter being preferred.  Specified peroxidic compounds are hydrogen peroxide, sodium perborate, potassium persulphate, alkali metal percarbonates and organic peroxides, e.g. acyl peroxides, ascaridole, cyclohexane peroxide, urea peroxide and hydrocarbon peroxides which are most preferred.  The reaction is suitably effected at between 20 and 150 DEG C. and specified solvents are halogen-substituted aliphatic, aromatic or alkylaromatic liquids, e.g. chloroform, carbon tetrachloride, tetrachloroethane, ethylene dibromide and crominated and/or chlorinated benzenes and aromatic hydrocarbons, e.g. benzene, toluene, xylene and diphenyl. Examples are given for the production of dimethyl 1,2-dibromo-2,2-dichloroethyl phosphate. The corresponding diethyl ester is also specified and this ester and the dimethyl ester have insecticidal properties (see Division A5). Specification 855,157 is referred to.ALSO:An insecticidal composition comprises a pure form of dimethyl (or diethyl) 1,2-di-bromo-2,2-dichloroethyl phosphate prepared by reacting the corresponding dialkyl 2,2-dichlorovinyl phosphate with bromine in the presence of an inert solvent and of a catalytic amount of a compound yielding free radicals (see Division C2) together with a carrier and/or a surface active agent.  Specified inert solvents which may be used in the preparation of the dialkyl 2,2-dichlorovinyl phosphate are halogen-substituted aliphatic, aromatic or alkylaromatic liquids, e.g. chloroform, carbon tetrachloride tetrachloroethane ethylene dibromide and brominated and/or chlorinated benzenes, and aromatic hydrocarbons e.g. benzene, toluene, xylene and diphenyl and when the solvent is suitable for use in an insecticidal formulation it need not be removed from the reaction mixture after the preparation of the active ingredient.  Specification 855,157 is referred to.
Patent GB-297943-A (GB)
Title: An improved device for softening or purifying water
IPC: F22D11/00
Filed: 1928-02-18
Abstract: 297,943. Conduit, G. W. Feb. 18, 1928. Feedwater, heating.-A device for softening water comprises trays 11, 12, 13, fitted with baffles and inclined alternately in opposite, directions. The water, supplied through a pipe 22, falls through openings 23 from one tray to that below and is received in a tank 14, which is fitted with baffles 27 and has at one end a series of outlet apertures 24. The trays are supported one upon another, the lowest being supported. by the tank 14, and the whole forming a rectangular structure, which may be suspended by stays 21 within the steam space of a boiler. The water passing through the apertures 24 joins the main body of water in the boiler. The baffle plates 25, 26 may have one large or a series of small apertures for the passage of water therethrough. As shown, the trays and tank each consist of two parts which are fixed together by bolts 30.
Patent GB-291035-A (GB)
Title: Improvements in cooling devices for mashing vessels for crystallisable material, more particularly for the sugar industry
IPC: C13B30/02
Filed: 1928-05-24
Abstract: 291,035. Rolz, A. May 24, 1927, [Convention date]. Solidifying liquids other than water.-Mashing vessels for crystallizable substances, such as massecuit from the boiling apparatus, are cooled by coils E disposed at intervals longitudinally of the vessel and connected to supply and discharge pipes for the cooling medium. The coils may be disposed either above, below, or laterally of the axle C of the stirring arms. The coils may be secured from the inside of the vessel, or from the outside by using joint flanges H, Fig. 2.
Patent GB-754490-A (GB)
Title: Heat resistant synthetic fiber-forming polyamides
IPC: C08G69/08
Filed: 1954-05-25
Abstract: Superpolyamides which are crystalline, fibreforming and have a high resistance to heat are obtained by polymerizing m-aminomethylbenzoic acid.  In examples: (1) an 8 per cent aqueous solution of the amino acid was heated in a flask to remove water and then heated slowly for one hour to 320 DEG  C. in an atmosphere of nitrogen to give a polymer which on heating to 340-370 DEG  C. darkened and showed incipient melting; (2) isopropanol was added to an aqueous solution of the amino acid to precipitate the acid.  Two parts of the moist acid were mixed with 1.7 parts mixed xylenols and the mixture heated at reflux for one hour to give a powdery polymer which darkened and showed incipient melting at 340-370 DEG C.ALSO:Meta-aminomethylbenzoic acid is prepared from isophthalic acid by conversion to metacyanobenzoic acid and subsequent hydrogenation. The amino-acid may be polymerized (see Group IV (a)).
Patent GB-258326-A (GB)
Title: Improvements in needles
IPC: D05B85/02
Filed: 1925-06-15
Abstract: 258,326. Thomas, J. Lynn-. June 15, 1925. Sewing-needles, specially suitably for surgical purposes in which a split eye is provided having a tapering extremity in which the thread is wedged, are formed so that the rear end of the eye terminates a substantial distance, that is to say at least a distance equal to one and a half times the thickness of the needle, from the extremity of the needle. The entrance to the eye b is guarded by a curved tongue g rooted at f on a thick portion at one side of the eye The eye is formed with an enlarged portion, the material of the needle being bent outwardly as shown. A roughened facet e<1> is provided to indicate the position of the entry to the eye Specification 27033/07 is referred to
Patent GB-201328-A (GB)
Title: Improvements in or relating to sound reproduction and apparatus therefor
IPC: H04R23/00
Filed: 1922-06-02
Abstract: 201,328. Kitchen, J. G. A. June 2, 1922. Sound - boxes; horns, arranging and supporting.- Relates to devices for improving in tone and amplifying the sound emitted from apparatus such as phonographic sound - boxes or wireless telephone receivers, of the kind in which the vibrating air is heated by electric means. According to the invention, the electric heating-device is so arranged that the air carrying the sound-waves comes into direct contact with the heating- element, provision being made for the circulation of the air. Fig. 1 shows a chamber 1 containing an electrically-heated resistance-coil 5 of wire or ribbon, the coil being supported by an asbestos or like ring 8. The chamber communicates at one side by a passage 4 with a sound-box or telephone receiver, and by an outlet 4 on the other side with a horn or ear-piece. A sound-box may have a tube on either side of the diaphragm, each tube leading through a heating-chamber to a separate horn. In the modification shown in Fig. 4, the sound passes from a sound-box 10 to a closed tube 11 in which are one or more rows of perforations 13. A helical heating-coil 14 surrounds the tube, so that the sound waves passing through the holes 13 strike the coil. Instead of a coil surrounding the tube, a small helix may be fixed in front of each row of perforations. An orifice 16 is provided through which air is led or blown at a slight pressure to promote circulation.
Patent GB-570507-A (GB)
Title: Improvements in or relating to chairs or go-carts for children
IPC: A47D13/04
Filed: 1943-09-23
Abstract: 570,507. Go-carts. HUTCHISON, G. Sept. 23, 1943, No. 15580. [Class 132 (i)] A child's chair or go-cart has a frame built up of lengths of tubing detachably connected by junction pieces 4 which slidably receive the ends of the tubes. The top of the frame is of rectangular shape and the bottom is five-sided, the additional side being constituted by an elongated junction bar 5. The seat consists of a canvas bag 7 with leg holes 9 and is carried by a rectangular frame suspended by hooks 10. A shallow canvas bag with a wired mouth may be connected between the seat and the frame to form a table.
Patent GB-828593-A (GB)
Title: Improved machine tool-holder for lathes and like machines
IPC: B23B27/16
Filed: 1958-05-15
Abstract: 828,593. Lathe &c. tool-holders. COMPAGNIE GENERALE D'ELECTRO - CERAMIQUE. May 15, 1958 [May 16, 1957], No. 15614/58. Class 83 (3). A tool-holder for lathes &c. has a cutting-tip linked to the holder by a chip-breaker attached to a clamp or clamp-screw in a secure and flexible manner, the heel of the clamp resting on the holder. A piece of metal foil 10, Fig. 2, brazed on a chip-breaker 3 and a clamp 4, has a hole to clear a clamping-screw 5. Alternatively the foil may be replaced by one or more flexible metal rods secured by welding, gluing or mechanical means, or the chip-breaker may be secured by a thin blade or a thin bent rod, with a hole for the screw 5. The chip-breaker 3, Fig. 3, may have a carbide tip 11, a swivel-joint 9, 12, and may be attached to the clamp magnetically.
Patent GB-626569-A (GB)
Title: Improvements in or relating to electric lighting fittings
IPC: F21V17/00
Filed: 1947-06-13
Abstract: 626,569. Fluorescent lamp fittings. GENERAL ELECTRIC CO., Ltd., and MORRIS, K. S. June 13, 1947, No. 15655. [Classes 75(ii) and 75(iv)] In a glass or plastic shade 8 for use with at least one fluorescent electric discharge lamp 7, the portion of the shade enclosing or shielding the glass portion of the lamp, or of each lamp, is substantially transparent, and each of the ends or parts 14 of the shade, enclosing or shielding the end caps 16 of the lamp, or of each lamp, is provided on its internal surface with a white finish arranged to transmit light and provide an evenly illuminated appearance. The shade 8 may be made of a transparent plastic and the parts 14 may be sandblasted and painted white on the inside, The transparent portion of the shade may be provided on the inside with ribs. As shown, the shade has rounded ends and is secured in a gallery 1 which houses the lamp auxiliaries and is convex in shape to fit in the radiused corner between the roof and side wall of a bus, the shade being secured to the gallery 1 by a fastener 11 at each end, co-operating with a spring 12 held on two screw supports 13, the fastener 11 and spring 12 being of the type known under the Registered Trade Mark "Dzus." The shade may only partially enclose a lamp to allow a certain amount of direct downward illumination.
Patent GB-370244-A (GB)
Title: Improvements in and relating to dynamo electric machines
IPC: H02K9/18
Filed: 1931-05-28
Abstract: 370,244. Cooling dynamo-electric machines. BRITISH THOMSON-HOUS. TON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Rice, C. W. ; 1161, Lowell Road, Schenectady, New York, U.S.A.) May 28, 1931, No. 15673. Convention date, May 28, 1930. [Class 35.] Enveloping in special media. - A totally-enclosed machine has arcuate coolers mounted in an end section of the casing for cooling the circulating gas, which may be air, hydrogen, or other gas and which passes from radial ducts in the stator core to the coolers through spaces between the core and casing. In the form shown, the coolers 33 each comprise a set of finned arcuate tubes connected to elbows at the top and bottom of the machine and are mounted between arcuate baffles 39, 40 in a removable section 17. Hydrogen is circulated by fan blades 28 between the rotor polepieces 24, through stator ducts 11, and over the coolers, being guided by the baffles 30, 32. The casing 21 for the collecting device is attached to the high and low pressure portions of the main casing by pipes 22, 23 respectively. A similar cooling arrangement is provided at the other end of the machine.
Patent GB-529738-A (GB)
Title: Improvements in and connected with conveyors for use with machines for proofing cartons and the like
IPC: B65G47/252
Filed: 1939-05-26
Abstract: 529,738. Proofing cartons. HARTMANN, C. W., and SATONA, Ltd. May 26, 1939, No. 15685. [Class 95] In a machine for proofing cartons, e.g. by waxing, the cartons are tranferred from the coating device by means comprising a longitudinal support for the bases of the cartons and an endless conveyer with one track parallel with the support and provided with carton pushing means, and scrapers are provided, combined with the support, to scrape the bases of the cartons. Cartons 1, after passing through the wax bath 41, are withdrawn from their holders 43 by members 55, and are deposited on base rails 60 which are parallel with the upper track of the conveyer 57. Transverse pusher rods 58 on the conveyer, and longitudinal rails 59, form square frames each receiving a single carton. The rails 60 may be knife-edged, and the rods 58 may carry toothed thin plates 79 to engage the cartons with point contact. Scraper blades 72, which may be heated, remove surplus wax from the bases of the cartons, and this surplus is collected in heated trays 63. Specification 529,733 is referred to.
Patent GB-897597-A (GB)
Title: Ventilated glazing panels
IPC: E06B7/08
Filed: 1960-05-04
Abstract: 897,597. Ventilation panels. ROWE, B., and ROWE, P. July 13, 1960 [May 4, 1960], No. 15745/60. Classes 20(3) and 137. A ventilation panel of transparent, coloured or colourless rigid plastics, incorporates parallel rows of vents 5 with protective caps 4 moulded over the vents on one side of the glazing panel.
Patent GB-939589-A (GB)
Title: Improvements in electric motor driven pulleys
IPC: F16H57/02
Filed: 1962-04-25
Abstract: 939,589. Mounting electric motors. HOLO-FLITE INTERNATIONAL Inc. April 25, 1962 [July 3, 1961], No. 15747/62. Class 35. [Also in Group XXIV] The speed of a pulley drum 10 driven by an internally mounted electric motor 11 is varied by manually altering adjusting screw 61 to vary the separation between sheaves 52, 53 thus altering the transmission ratio of the external gear-box 62. Motor shaft extension 45 drives spring loaded sheaves 70, 71 on lay shaft 66 by a belt driven from the adjustable sheaves 52, 53 and the output drive to tube 43 is taken from wheel 80 which is chain driven from pulley 182 on the layshaft. In the fixed reduction, internally mounted gear unit, drive pinion 87 is driven from teeth 89 on tube 43, and drives the internal gear 86 through teeth 88 on the countershaft 84. The stationary parts of the assembly are mounted from tube 23 which extends coaxially into the drum from mounting 16 and provides the support for the motor.
Patent GB-1191763-A (GB)
Title: Improvements in or relating to Protective Arrangements for Transformers
Inventor: WRAPSON ALAN IAN
IPC: H02H7/04
Filed: 1968-04-02
Abstract: 1,191,763. Protective arrangements. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. 1 April, 1969 [2 April, 1968], No. 15773/68. Heading H2H. A current transformer CT has a pair of antiparallel thyristors SCR1, SCR2 connected across its secondary winding in order to protect it from the rise in voltage which occurs if the load L is disconnected or if the transformer is otherwise open-circuited. The gates of the thyristors are connected to appropriate points on a high resistance which is also connected across the secondary winding such that under normal working conditions the thyristors are not triggered. Alternatively, the gates may be connected directly to intermediate tapping points on the secondary winding. If the secondary voltage exceeds a given level, the thyristors will fire and allow secondary current to flow, thus limiting the voltage rise.