baber/WOPTO huggingface dataset:
Patent GB-415252-A (GB)
Title: Improvements in apparatus for stamping and punching or like operations on sheet metal
IPC: B21D28/14
Filed: 1933-07-12
Abstract: Punches &c. are case-hardened by immersion in a hot solution of sodium cyanide 75 per cent, carbonate of magnesia 5 per cent, sodium carbonate 10 per cent, common salt 10 per cent by volume.
Patent GB-825221-A (GB)
Title: An electro mechanical warp control system for looms
IPC: D03C3/20
Filed: 1956-06-26
Abstract: 825,221. Shedding mechanism. OMAR, A. W. June 26, 1956 [April 14, 1956], No. 19775/56. Class 142(2) Rods M connected to the harness pass through a vertically-reciprocating member L housing magnet windings A which can -attract bolts B to engage shoulders on.the rods, whereby selected rods are lifted. The magnets are coupled in series and controlled by a pattern card of insulating material; electrical contact is made through holes in the card to short circuit the corresponding magnets, thereby leaving the associated harness down.
Patent GB-1269262-A (GB)
Title: Improvements in fuel combustion methods and apparatus
IPC: F23D11/24
Filed: 1969-04-18
Abstract: 1,269,262. Burners. NIKEX NEHEZIPARI KULKERESKEDELMI VALLALAT. 18 April, 1969. [20 April, 1968], No. 19802/69. Heading F4T. In a fuel combustion apparatus fuel is vaporized in an evaporation chamber by dipping surfaces of a rotor 38, formed by plates or wires, into a bath 39 of liquid fuel and passing a gaseous medium which is preheated by an auxiliary heater 15 or by a heat exchanger heated by flue gas over the rotor to evaporate fuel therefrom, the combustible mixture being driven, by a fan 16, through a burner 12. Auxiliary fuel from a tank 3 may be used on start-up. In an alternative embodiment, Fig. 3, flue gas extracted from the combustion chamber 30 is mixed with the vaporization medium via a Venturi 34 which can be adjusted by a rod 35 operated manually or by a controller 27 which responds to a temperature detector 28.
Patent GB-404340-A (GB)
Title: Improvements in or relating to vacuum refrigerating systems
IPC: F25D31/00
Filed: 1932-07-13
Abstract: 404,340. Refrigerating. ELECTROLUX, Ltd., 153, Regent Street, London.-(Assignees of Platen-Munters Refrigerating System Aktiebolag; 2, Norrmalmstorg, Stockholm.) July 13, 1932, No. 19820. Convention date, July 30, 1931. [Class 29.] Vacuum machines and systems.-The vessels 11, 11<1> are connected by a duct provided with water-jets 14, 14<1> connected through a valve 15, preferably controlled by a thermostat, with a domestic &c. water supply. The vessels act either alternately or at will as evaporators and compression and condensation chambers for a refrigerant, e.g. dichlormethane, which evaporates and condenses at atmospheric pressure at temperatures between 0‹ C. and 60‹ C. With refrigerant in the vessel 11 and the jet 141 in action, a partial vacuum will be produced in the vessel 11 and the vaporised refrigerant exhausted therefrom and compressed and condensed in the vessel 11<1>. The condensed dichlormethane will collect in the lower part of the vessel 11<1> and, upon the attainment of a predetermined pressure therein, the valve 181 will open and permit the water to pass through a pipe 17<1> so as to flow over the outside of the vessel which may be coated with a porous material. Upon reversal of the valve 15 evaporation takes place in the vessel 11. The refrigerant liquid and vapour spaces are connected by small bore pipes 20, 201 which may, however, be arranged outside the vessels. By connecting the refrigerant liquid spaces by a valved-pipe refrigerant may be run from one vessel to the other. In a modification, the jet 14<1>, Fig. 2, may discharge into a baffled cylinder 21<1> in which separation of the water and the condensate occurs, the condensate passing through the ducts 25, 26, to the ice-making chamber 11<1>. The corresponding vessel 11 may consist of a jacketed vessel having heatconducting plates 30, Fig. 4, for gripping a bottle or glass to be cooled.
Patent GB-689955-A (GB)
Title: Improvements in or relating to arc chutes in electric circuit interrupters
IPC: H01H9/34
Filed: 1951-08-23
Abstract: 689,955. Arc-rupturing in switches. ALLIS-CHALMERS MANUFACTURING CO. Aug. 23, 1951 [Oct. 2, 1950], No. 19888/51. Class 38 (v) A switch has an arc chute 25 with a plurality of spaced fins or plates having serrations, notches or slots along their edges traversed by the arc. In Fig. 1 the switch has a fixed main contact 13, a tertiary contact 14, an arcing contact 15, a moving contact 16, arc runners 29, 30 and a magnetic blow-out structure comprising a coil 28, a core 26 and poles indicated at 27. The arc chute may have insulating side walls 31, 32, Fig. 3, with projecting fins 33, 34 which are tapered and interleaved as shown to provide a tortuous arc passage, the notches 36 being provided in the tapered edges. In Fig. 7 the projecting fins 42 abut and tapered notched plates 44 are interposed so as to provide a tortuous arc passage. Fig. 11 shows a barrier plate 50 having a V-shaped slot which has rectangular notches 52. Alternatively, these notches 52 may be round-bottomed, Fig. 12 (not shown). In a further arrangement, Fig. 13, the arc chute may have fins 57, 58 which are spaced apart so as to provide an arc passage 61 extending through the chute, the passage 61 having rectangular notches 63 as shown, or round-bottomed notches, Fig. 14 (not shown), saw tooth notches, Fig. 17 (not shown), or inclined upstream or downstream extending notches, Fig. 18 and 19 (not shown). A barrier plate having a number of notched slots is illustrated in Fig. 16 (not shown). It is stated that the arc chute may have groups of plates or fins which are identical or may comprise any combination of the plates described.
Patent GB-1374938-A (GB)
Title: Vehicle roof
IPC: B60R21/04
Filed: 1973-04-26
Abstract: 1374938 Vehicle roofs DAIMLER-BENZ AG 26 April 1973 [29 April 1972] 19972/73 Heading B7J [Also in Division E2] A vehicle roof comprises a fabric or synthetic sheet lining 1 secured to roof frame 2 by expandable rivets 4 which penetrate the lining and enter holes 5 in embossed frame section 6. The rivets, made of plastics material, are flattening on two opposite sides and have a local thickening 9 in their stem, a longitudinal recess 10 opening towards one side only. The rivet heads 10 may be of a colour compatible with the lining. A cover 11 of a sheet metal part 11 upholstered or sheathed in foam material may mask the rivets and lining edges.
Patent GB-388396-A (GB)
Title: Variable pitch propeller
IPC: B64C11/34
Filed: 1931-07-13
Abstract: 388,396. Air-screws. SCHROEDER, R. W., Glenview, Illinois, U.S.A. July 13, 1931, No. 20072. [Class 114.] A variable-pitch air-screw having blades adjustable about an axis at right-angles to the propeller axis has centrifugal governing mechanism for changing the pitch and adjustable stop mechanism responsive to a change of speed of rotation of the propeller is employed to determine the change of pitch. Each blade 12 is mounted in a hub socket 26 and carries at its root a bevel wheel 23 meshing with bevel wheels 25 on axle pins 31. External of the boss the pins 31 carry toothed sectors 29 meshing with a pinion 30. On the axis of this pinion is mounted a lever 33 which is coupled by rods 34 with sleeves 26 constituting the weight which under centrifugal force moves to control the pitch. Normally the minimum and maximum pitch positions are set bv contact of such weights with the hub and a collar 19 respectively. The maximum pitch position may, however, be determined by an adjustable stop mechanism 35 constituted by a block mounted on an axis 37 upon which also is a ratchet member 36. Engaging this ratchet member is a finger 38 and spring control pawl 40. In operation as the propeller speeds up the sleeve 26 moves out until the stop block 35 contacts with the collar 19. On a reduction of speed the sleeve on its movement inwardly causes the block 35 to be rotated to a new position so that on the next increase in speed a new maximum pitch position is determined. Specification 378,196 is referred to.
Patent GB-381959-A (GB)
Title: Sheet metal structures
IPC: B64C3/26
Filed: 1931-07-15
Abstract: 381,959. Aircraft structures ; floats. ARMSTRONG WHITWORTH AIRCRAFT, Ltd., SIR W. G. and WYLIE, H. N., Whitley, near Coventry. July 15, 1931, No. 20315. [Classes 4 and 113 (ii).] A covering for a hollow, metal structure such as a fuselage or float comprises thin metal planks, of tapering width, with edges that are flanged and with longitudinal surface grooves mainly of uniform width but converging towards one another and decreasing in number as the surface becomes narrower. Fig. 1 shows a float of which the surface is built up from metal planks 2 of approximately fifteenthousandths of an inch in thickness. The planks have straight or regularly curved edges. One edge of each plank is flanged at 3, Fig. 3, and grooves 4, 4 are formed on the surface parallel to the flange 3, the grooves dying out if they tend to run into the other edge of the plank. The partly-formed plank is then marked out in position for the flange 3a on the other side edge and is completed bv forming further grooves 4a, 4a parallel to the edge 3a. The grooves are formed by stretching the metal, the forming rolls gripping the metal on either side of the groove being formed, and are caused to die out by relieving the pressure on the rolls. The flanges of adjoining planks are united by a clamping strip 8, Fig. 4, the edges of the flanges being outwardly turned as at 9 and string or other absorbent packing 10 saturated with marine glue compressed in the recess so formed. The invention may be applied to internal structures such as tapered wing spars.
Patent GB-168482-A (GB)
Title: Improved process for removing sulphur from gases
IPC: C10K1/18
Filed: 1920-07-09
Abstract: 168,482. South Metropolitan Gas Co., Evans, E. V., Hollings, H., and Stanier, H. July 9, 1920. Materials for purifying.-A process for the removal of sulphur compounds from coal or like gas consists m washing the gas with both a volatile oil such as benzol and a stripping-oil such as creosote of which not less than 500 gallons are used per million cubic feet of gas. These oils may be mixed or used separately. Paraffin oil may be used instead of creosote, particularly if finely-divided alumina or charcoal be suspended in it, and the stripping-oil free from benzol may be introduced into the washer and benzol vapour added to the gas entering the washer. Thiophene may be removed by treatment with sulphuric acid and the benzol and creosote used again in a cyclic process.
Patent GB-261099-A (GB)
Title: Improved process for obtaining lustre and matt effects on fabrics composed wholly or in part of viscose in the sulphur state
IPC: D06P5/00
Filed: 1925-08-14
Abstract: 261,099. Burgess, Ledward & Co., Ltd., Scholefield, F., and Denver, N. Aug. 14, 1925. Inkless printing by chemical reaction.-Matt and lustre effects are produced on yarns composed of viscose artificial silk in the sulphur state by means of a printing-paste containing sodium sulphite, potassium sulphite, ammonium sulphite, calcium sulphite, or other desulphurizing agent which has no deleterious effects on copper printing-rollers. Other ingredients, such as glycerine. British gum, sodium phosphate. caustic soda. potassium carbonate. and sodium benzyl sulphanilate, may be added.
Patent GB-1246424-A (GB)
Title: pi-ALLYL COMPOUNDS OF URANIUM
IPC: C07F5/00
Filed: 1970-04-28
Abstract: 1,246,424. Tetra (#-allylic) uranium compounds. SNAM PROGETTI S.p.A. 28 April, 1970 [2 May, 1969], No. 20452/70. Heading C2J. # -Allylic uranium compounds of general formula where each of R 1 -R 5  is -H, C 1-10  alkyl, C 6-10  aryl, C 4-10  cycloalkyl or C 7-10  alkyl-aryl are prepared by reacting a polar solvent suspension of a tetravalent uranium compound such as a halide, an alcoholate or the acetylacetonate with a solution of a compound of formula where R 1 -R 5  are as above, Me<SP>I</SP> is an alkali metal, Me<SP>II</SP> is a Group II metal and X is halogen. The allylic uranium compounds may be separated from the reaction mixture by low temperature (e.g. -80‹ C.) crystallization from an inert aliphatic or aromatic solvent. In the example, tetra-(#-allyl) uranium is prepared from UCl 4  and allyl-magnesium bromide.
Patent GB-1009554-A (GB)
Title: Improvements in or relating to selective printers
IPC: B41J7/62
Filed: 1962-05-02
Abstract: 1,009,554. Selective printing. SOROBAN ENGINEERING Inc. May 2, 1962 [June 12, 1961], No. 20549/65. Divided out of 1,009,553. Heading B6F. The subject-matter of this Specification is identical with that of Specification 1,009,553, but the claims differ.
Patent GB-182343-A (GB)
Title: Improvements in rotary grates for gas producers and other furnaces
IPC: F23H13/08
Filed: 1921-08-02
Abstract: 182,343. TrÚfois, L. Aug. 2, 1921. Addition to 153,163. Grates.-In revolving grates of the kind described in the parent Specification, the annular zones comprising the grate are driven in the same direction at different speeds. In a grate having three zones A, as shown, the shaft 3 drives the shafts 1, 2 through bevel-gearing. The shaft 1 carries two bevel pinions of equal diameter driving crown-wheels on alternate zones A, while shaft 2 carries a bevel-wheel of different diameter driving a crown-wheel on the other zone.
Patent GB-1137147-A (GB)
Title: Improvements in single evaporator refrigerator
IPC: F25B1/00
Filed: 1966-05-10
Abstract: 1,137,147. Refrigerators. GENERAL ELECTRIC CO. 10 May, 1966 [12 May, 1965], No. 20585/66. Heading F4H.  A two-compartment refrigerator comprises a fan 12 which draws air from the freezer compartment 1 through a louvred inlet 15 and from the storage compartment 2 through inlets 22, an evaporator 9 over which the air is drawn by the fan, an outlet 24 to compartment 2 for a minor portion of the cooled air, and a tunnel 17 which receives the major portion of the cooled air and supplies the air to compartment 1 through side and front outlets 19, 20. Tunnel 17 accommodates one or more ice trays 18. The evaporator has an electric defrost heater disposed in slots 47 in its fins, the heater being energized by a timer (not shown) and de energized by a temperature responsive switch 65. A drain 49 for defrost water communicates with a channel 48 which discharges on to the rear wall of compartment 2, the bottom of which has a drain 52 communicating with the machinery compartment 6. It is stated that excessive frost formation on the leading edges of the evaporator fins is prevented by increasing the length of the fins upstream of the first pass of the evaporator coil so that their edges are at a relatively high temperature. Alternate fins may terminate on the downstream side of the first pass of the evaporator coil.
Patent GB-804187-A (GB)
Title: Improvements in or relating to heat and chemically impervious insulating material and method of preparing the same
IPC: B32B15/08
Filed: 1956-07-03
Abstract: 804,187. Coated glass fabrics; laminates. CONNECTICUT HARD RUBBER CO. July 3, 1956 [Aug. 25, 1955], No. 20610/56. Class 140. An insulating fabric consists of a glass fabric structural member having a coating of sponge rubber on one side and a reflective metal coating on the other side. The reflective surface of the fabric may be coated with a high chemicalresistant material such as polyethylene or a polyfluorocarbon, e.g. polymonochlorotrifluoroethylene, polytetrafluoroethylene, or the reflective surface may consist of a reflective powder suspended in the chemically resistant material. Sponge rubbers containing natural rubber, styrene - butadiene and acrylonitrile - butadiene copolymers, butyl and neoprene rubber, " Thiokol " (Registered Trade Mark), silicone rubber or "Kel-F" (Registered Trade Mark), may be used. Reflective metals specified are aluminium, silver, gold, chromium, nickel, platinum, tungsten and molybdenum which may be applied as a foil, paint, pigment in a resin, e.g. silicone resin, or may be vacuum deposited.
Patent GB-1150544-A (GB)
Title: Improvements in or relating to Acoustic Tile Laminate
Inventor: SCHIRICK ROBERT J
IPC: E04F13/16
Filed: 1966-05-10
Abstract: 1,150,544. Laminated acoustic tile. NATIONAL GYPSUM CO. 10 May, 1966, No. 20679/66. Headings B5A and B5N. An acoustic tile laminate comprises a backing layer 11 consisting essentially of felted mineral wool and a starch binder and a facing layer 13 consisting essentially of cast mineral wool, a starch binder and a thickening agent for said starch binder, said starch binders of both said facing layer and said backing layer differing from each other by no more than 3% by weight of the total weight of the layer with which each starch binder is associated. Different starches are preferably used in each layer, the binders optionally containing wax emulsions, fungicides, clay or stucco. Specified thickeners are ethylene oxide polymers, blends of polyacrylimide with guar gum and hydroxy propyl methyl cellulose. In a preferred method of making a tile, a backing layer is formed on a drum, laid whilst still wet in a tray and a wet facing layer applied thereto. The facing layer may be mechanically worked to provide a travertine stone-like appearance.
Patent GB-1435718-A (GB)
Title: Manufactured titanium dioxide pigments having weather resistance
IPC: C09C1/36
Filed: 1973-05-02
Abstract: 1435718 Coated TiO 2  KRONDS TITANGmbH 2 May 1973 [13 May 1972] 20744/73 Heading C1N Uncoated TiO 2  pigment is post-treated by adding an aqueous solution of a Zn salt to an alkaline slurry of the pigment, thereby precipitating ZnO 2  hydrate as a part coating on the pigment, and when the ZrO 2  hydrate is at least partially precipitated and without otherwise altering the pH, adding to the slurry an aqueous solution of an Al salt Œ one or more other post-treatment salt whereby Al 2 O 3  hydrate Œ other compounds or hydrated oxides are precipitated, and then recovering the coated pigment at about neutral pH followed by washing, drying and grinding the other post-treatment salts may be Al, Ti and Zn sulphates or chlorides, Na aluminate and Na silicate. Acid or alkali is added if necessary, to adjust the pH after the addition of the Al Œ other salts.
Patent GB-597295-A (GB)
Title: Improvements in the production of organic acid esters of cellulose
IPC: C08B3/22
Filed: 1945-08-13
Abstract: A process for ripening organic acid esters of cellulose comprises the injection of a hot vapour such as steam into the solution of the primary ester so that the conversion to the secondary ester takes place at about 60 DEG  C.  The ester may be that of any of the lower fatty acids such as acetic, propionic or butyric, or it may be a mixed ester such as cellulose acetate-propionate, or acetate-butyrate.  The catalyst for the esterification may be sulphuric or phosphoric or a mixture of these acids.  The process is preferentially carried out in stages and the acid present as a catalyst in the esterification should be neutralised partly before the ripening is commenced.  Suitable neutralising agents are the acetates of calcium, magnesium and zinc, the carbonates of calcium, magnesium, aluminium, barium, copper, lithium and strontium, the oxides and hyroxides of aluminium, barium, copper, lithium and strontium and also zinc oxide.  A mixture of magnesium acetate and calcium acetate is used preferentially.  The cellulosic material (e.g. cotton, cotton linters, wood pulp or material from straw and hulls) may be pretreated with acetic acid in accordance with known methods before esterification.  By the present process the total time of preparing the cellulose ester is cut down and no substantial reduction in the degree of polymerization is effected.  In an example, 100 parts of cotton linters are pretreated with 35 parts of acetic acid, 0.5 parts of sulphuric acid and 0.5 parts of water for 3 hours at 22 DEG  C.  (All parts are by weight.)  It is then transferred to an acetylizer containing 240 parts of acetic anhydride, 330 parts of acetic acid and 13.25 parts of sulphuric acid, and acetylated at a temperature below 34 DEG  C.  When the reaction is complete enough water to react with the excess acetic anhydride is added, 25 per cent of the sulphuric acid is neutralized and water added in an amount equal to 15 per cent of the cellulose. The charge is ripened at 30 DEG  C. for 30 minutes. An additional 42 per cent of water is now added, a further 35 per cent of the sulphuric acid neutralised and the temperature is raised to 60 DEG C. in a period of 40 minutes by the direct injection of steam. During this stage the mass is agitated.  The third stage is carried out at 60 DEG  C. and 33 per cent of water per hour is added until the cellulose acetate has an acetyl value of 54.4 per cent (as acetic acid).  It is then precipitated by the addition of a large excess of water and treated further with solvents as may be required.
Patent GB-878561-A (GB)
Title: Aqueous polymer dispersions
Inventor: COOPER WILFRID
IPC: C08C2/06
Filed: 1957-07-02
Abstract: Aqueous dispersions of a gelatinous polymeric reaction product derived from an unsaturated aliphatic compound obtained using a catalyst consisting of a mixture of a compound of a heavy metal selected from Group IVa, Va, VIa, VIIa, or VIII of the Periodic Table and an organo-metallic compound of a metal selected from Group I, II, IIIb, or IVb of the Periodic Table, are made by incorporating in the polymeric reaction product an organic acid capable of forming a water-soluble soap, and converting the acid into a water-soluble soap and agitating the composition with water.  The organic acid is generally added directly to the polymer suspended in the medium in which it is prepared and the organic acid functions as a metallic catalyst residue remover. The medium in which the polymerization is effected is generally an aliphatic or mononuclear aromatic hydrocarbon.  The catalyst used in the polymerization may be adsorbed on cryolite, or silica, or carbon black.  The organic acid may be oleic acid, linoleic acid, linolenic acid, capric, lauric, palmitic or stearic acid, or rosin acids such as dehydroabietic acid, 7, 8-dihydroabietic acid, tetrahydroabietic acid, dextropimaric acid, or dihydrodextropimaric acid.  The acid is converted into a water-soluble soap by the addition of bases such as the hydroxides of ammonium and the alkali metals.  The polymeric material may be obtained by the polymerization of butadiene, isoprene, propylene, butene-1, ethylene, and mixtures thereof.  In Example (1), liquid butadiene is polymerized in heptane in the presence of aluminium triisobutyl and titanium tetrachloride, and an aqueous dispersion formed by adding oleic acid to the polymerizate followed by sodium hydroxide, and then water; in Example (2), polyisoprene made by the same process as polybutadiene in Example (1), but using benzene as the polymerization medium is formed into an aqueous dispersion by adding to the medium, with stirring, lauric acid, sodium hydroxide, and water; whilst in Example (3) a copolymer of ethylene and propylene is made by polymerizing a mixture of the monomers in petroleum ether in the presence of vanadium tetrachloride and aluminium triisobutyl, and an aqueous dispersion formed by adding to the medium, with vigorous stirring, lauric acid, sodium hydroxide, and water.  The polymeric materials may be isolated from the aqueous dispersions by conventional synthetic rubber latex techniques.