baber/WOPTO huggingface dataset:
Patent GB-554719-A (GB)
Title: Improvements in or connected with rangefinders and heightfinders for anti-aircraft gunnery
IPC: G01C3/20
Filed: 1941-10-24
Abstract: 554,719. Range-finders. BARR & STROUD, Ltd., STRANG, J. M., and FOSTER, C. Oct. 24, 1941, No. 13725. [Class 97 (i)] Means of the type described in Specification 554,560 for moving the deflecting prism, or the equivalent, of a range-finder is continuously adjustable in accordance with applied values of the height H and speed V of the aircraft ranged upon, as well as the course angle # and the angle of sight α. As shown, the slide 11, corresponding to the slide bar 11 of Fig. 2 of Specification 554,560, and moving in accordance with sin # sin 2α or with sin # sin 2a sin α moves a slotted lever 35 about a fixed pivot 36. A vertically-movable carrier 37 carries a slotted lever 38 connected with the lever 35 and with a transverse slot 44 by a movable pin 43. The carrier movement is effected by a shaft 46, turned in accordance with values of H, and operating through conversion cams 47, a pinion 48, and a rack 49 on the carrier. A threaded shaft 39 is mounted on the carrier, and is turned by a gear 50, engaging a barrel pinion 51 rotatable by a head 52, in accordance with values of V as indicated by a scale 53 and fixed index 54. Rotation of the shaft 39 raises or lowers a slotted arm 40 connected with the lever 38 and with a slotted arm 42 by a pin 45, the resultant horizontal movement of the arm 42 being in accordance with V sin # sin 2α/2H or with V sin 8 sin 2α sin α/2H<SP>2</SP>. The arm 42 controls the position of balls 55 transmitting motion from a disc 56, driven by a constant speed motor 57, to a roller 58 on a shaft 59, and the rotation of the shaft 59 is in accordance with log sin a or with 1/RD, RD being the direct range. The shaft 59 operates through conversion gear to move the deflecting prism of the range-finder. A modification is described in which the bar 42 is moved by mechanism comprising four slotted rotatable discs to which the four values are separately applied. Specification 129,345, [Class 97 (i)], also is referred to.
Patent GB-689535-A (GB)
Title: Improvements in or relating to method and apparatus for forming molds
IPC: B22D13/10
Filed: 1951-06-11
Abstract: 689,535. Moulding-machines. HERMAN PNEUMATIC MACHINE CO. June 11, 1951 [Dec. 22, 1950], No. 13797/51. Class 83 (i). In making a mould, material is cut from the inner face of a hollow open-ended body of the material and, at the same time ejected. This may be done by cutting and ejecting means mounted on an elongated member which is secured at one end to means for advancing the member into the body and for bringing the cutter into engagement with said material. The device is shown as applied to a moulding- machine of the kind in which the charged flask is centrifuged to form an axial passage and the material is finally compacted by a rotary mandrel as described in Specification 650,683. The elongated member 8 is tubular and carries a cutter 16, adjacent an opening 13 in the member 8, so that the cut material falls into the member and is blown out by air from a tube 17. The member 8 is adjustably mounted on a cross slide 4 of a slide 3 movable longitudinally of the member 8 and of the mould, not shown. The slide 4 also carries a mandrel 7 for compacting the mould material as in the prior Specification.
Patent GB-564687-A (GB)
Title: Improvements in or relating to electric circuit control and protection arrangements
IPC: H02H3/00
Filed: 1943-08-26
Abstract: 564,687. Protective cut-out arrangements. IGRANIC ELECTRIC CO., Ltd. (Cutler-Hammer, Inc.). Aug. 26, 1943, No. 13920. [Class 38 (v)] A control and overload protective system for a motor M; and suitable for aircraft where continued operation of the overloaded motor may be necessary, comprises contacts S1 of a switch S, the winding S2 of which is energized in the first place by moving a switch 1 to contact 2, and is maintained by a circuit including contacts S1, contacts 4 of an overload relay, and a resistance 5 which prevents switch 1 from directly starting the motor. The switch 1 is of the retractive type and can be held to contact 2 for overriding contacts 4, and can be moved to " stop " contact 3 for short-circuiting coil S2 and disconnecting the motor. An indicator-coil 6 is energized in parallel with, and-short-circuited at the same time as, winding S2. Switch 1 may be replaced by separate switches.
Patent GB-627792-A (GB)
Title: Improvements in or relating to induction furnaces
IPC: H05B6/20
Filed: 1947-05-27
Abstract: 627,792. Induction furnaces. BIRLEC, Ltd. May 27, 1947, No. 14018. Convention date, Oct. 17, 1946. [Class 39(iii)] In a submerged resistor type induction furnace 1 having a plurality of horizontal melting channels 4 closed by plugs 10, a passage 9 is provided connecting the channels to equalise the internal working pressures in the melting channels when the furnace is working, and to enable all the channels to be drained by removing only one plug 10. The passage 9 is preferably located near the discharge ends of the horizontal channels 4 adjacent the plugs 10.
Patent GB-140540-A (GB)
Abstract: 140,540. Taggart, G. M. Jan. 20, 1919. Dampers.-A draught-regulator designed to be fitted in the chimney of a furnace, stove, or other heater consists of a box with two parallel sides and two upwardly converging sides 16, 17, and with collars 13, 19 which connect it to lower and upper sections of the flue-pipe. Doors or dampers 20, 21 are pivoted in sockets 22, 23, and are operated by links 26, a lever 25, and a spindle 24 with an external handle so as partly to close the flue passage and to allow air to enter the flue by means of air inlets 14, 15.
Patent GB-501514-A (GB)
Title: Improvements in or relating to a treatment of paper or similar preformed flexible sheets of felted fibrous material or plywood veneer
IPC: B27K3/50
Filed: 1937-05-20
Abstract: 501,514. Films. AMERICAN REENFORCED PAPER CO. May 20, 1937, Nos. 14066 and 14067. Convention dates, May 20, 1936 and April 6, 1937. [Class 2 (ii)] [Also in Group VIII] The Specification as open to inspection under Sect. 91 describes a method of treating non-fibrous cellulose sheets to restrain shrinkage upon alternate wetting and drying, wherein the sheets are uniformly impregnated with a limited amount of a solution of the constituents of a water-insoluble resin and thereafter subjected to heat treatment.to produce the resin, the amount of resin introduced in this way not exceeding 12 per cent, and preferably being approximately 5 per cent. The solution may comprise a solution of urea thiourea or cresol and formaldehyde in water or a lower alcohol. The solution may contain accelerators such as ammonium thiocyanate or chloride and may be slightly acid. The impregnation may be effected by immersing the sheet in a bath of the solution and subsequently removing a substantial quantity thereof, preferably leaving only that required to increase the weight of the sheet about 30 per cent, as by friction doctoring, air pressure and suction methods of extraction, squeeze rolls, or the like. Alternatively the sheets may be impregnated with water-soluble condensation products of the resin. This subjectmatter does not appear in the Specification as accepted.
Patent GB-496126-A (GB)
Title: The manufacture of new dyestuffs of the anthraquinone series
IPC: C09B1/20
Filed: 1937-05-20
Abstract: Acid wool dyes are made by condensing a 1-amino-4-halogenanthraquinone-2-sulphonic acid chloxide (or a nuclear substitution product thereof) with iminodiacetic acid (or with aminoacetic acid, followed by after-treatment with chloracetic acid) to give the sulphonamide, followed by reaction with an amine to replace the 4-halogen atom.  The products have the formula. <FORM:0496126/IV/1> where R is hydrogen, alkyl, aralkyl, cycloalkyl, aryl or a heterocyclic residue, and the anthraquinone nucleus may be further substituted.  In examples, a sulphonamide obtained by reacting iminodiacetic acid sodium salt with 1 - amino - 4 - bromanthraquinone - 2 - sulphonic acid chloride in dioxane and alcohol is condensed with (1) aniline (blue shades on wool and acetate artificial silk); (2) p-aminoacetanilide (greenish-blue shades on wool); (3) m-aminoacetanilide (reddish-blue); (4) hexahydroaniline (reddish-blue); (5) isopropylamine or sec-butylamine (reddish-blue).  The Provisional Specification refers to condensing a 1-amino-4-halogenanthraquinone-2-sulphonic acid amide (or its nuclear substitution products) with two molecules of chloracetic acid, followed or preceded by the replacement of the 4-halogen atom by reaction with an amine.
Patent GB-438856-A (GB)
Title: Improvements in and relating to hydraulic control systems
IPC: G05D13/00
Filed: 1935-05-14
Abstract: 438,856. Steam turbines. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. May 14, 1935, No. 14142. Convention date, May 16, 1934. Addition to 398,412. [Class 110 (iii)] In a hydraulic control system of the type described in the parent Specification, comprising a servomotor-operated regulated element, for example the control valve 10 of an elastic-fluid engine operated by a servomotor 13, a pilot valve 19 for the motor 13 operated by a regulating element, for example, a speed governor 11, through a lever mechanism 24, 21, and a second pilot valve 37 operated by the movement of the regulated element to vary the pressure in a supply conduit 34 and a motor cylinder 28 and to move the piston 29 against a spring 31 which, acting through the lever 21, restores the pilot valve 19 to its original position, auxiliary means are provided for accelerating the restoring movement of the pilot valve 19. The auxiliary means comprise a modulating cylinder 41 in communication with the restoring pressure conduit 34 and having a piston 42 attached to the pilot valve 37 so that movement of the pilot valve effects an immediate increase or decrease of the volume of the pressure line 34 with a corresponding decrease or increase of pressure to accelerate the movement of the piston 29 to restore the pilot valve 19 to its original position.
Patent GB-126009-A (GB)
Title: Improved Means for Carburetting Air and for Regulating the Supply of Fuel to Internal Combustion Engines.
Inventor: GRACE CHARLES JEEENS
IPC: F02M11/10
Filed: 1916-10-05
Abstract: 126,009. Grace, C. J. Oct. 5, 1916. Addition to 11,830/15. Spray carburettors. -The parent Specification describes a carburettor in which f u e ls supplied through an assemblage, of capillary tubes the number of which in action can be varied in accordance with the movement of the throttle valve. The invention consists in making the capillary tubes very short. A tube D closed at the bottom is provided with an inner coaxial tube E which slides in the pipe B and is connected, through a link F, to the throttle valve C. Fuel, from the float chamber A, enters the tube D through capillary holes H, the number of which in action can be varied. The fuel is sprayed by air entering through ports I, and the mixture passes through ports J to the engine.
Patent GB-615925-A (GB)
Title: Improvements in and relating to the production of silver coatings on metals and alloys
IPC: C23C18/44
Filed: 1947-06-25
Abstract: Metallic surfaces are silvered by bringing them into contact with a dilute ammoniacal silver solution containing an excess of ammonia of from 8 per cent to 25 per cent over the theoretical Ag : 2 NH3 ratio of 108 : 34.  The solution may also contain a reducing agent such as a tartrate, or a citrate, or a reducing sugar.  The surface may have a pre-formed oxide or other previous coating formed, for example, by anodizing followed if necessary by unsealing by nitric acid, or by soaking a polished surface in alkali metasilicate solution followed by drying.  The Specification refers to the coating of aluminium, magnesium, alloys containing aluminium or magnesium, steel, tinned iron, and nickel, each of which may receive further electrolytic deposits of silver, and contains details of two solutions suitable for silvering aluminium or aluminium alloy, and magnesium, respectively.
Patent GB-150801-A (GB)
Title: Improvements in and relating to game apparatus
IPC: F41J7/04
Filed: 1919-06-05
Abstract: 150,801. Isberg, H. F. G. A. June 5, 1919. Parlour games.-In a game apparatus for table use of the kind comprising a target board having numbered openings normally closed by movable target members, the face of the board is provided with animal or other figures of which the movable target members 5 form the heads, and the target board is supported at the back by a hinged flap 7 secured by a hinged and slotted locking-member 11. The flap 7 and the locking member 11 may be folded flat against the board. A cross-bow, Fig. 4, is provided for shooting projectiles 16 at the target members 5. The projectiles have spherical heads 17 and flat tails 19.
Patent GB-354380-A (GB)
Title: Improvements in or relating to the production of insulating materials
IPC: C08C4/00
Filed: 1930-05-09
Abstract: The process of the parent Specification, in which the nitrogenous matter naturally occurring in latex or coagulated rubber, is modified by heating with water to a temperature above 100 DEG  C., and subsequently removed by washing, is accelerated by the addition of up to 2 per cent of caustic alkali, under a pressure of 0,5-5 kg. per sq. cm.  According to an example, latex of 40 per cent rubber content is diluted with an equal volume of water, and sufficient sodium hydroxide is added to give a solution of 1/2 -1 per cent concentration.  This is heated to 145-150 DEG  C. at the corresponding steam pressure for 2 hours, coagulated with acetic acid, and washed for 1-3 hours at 60-90 DEG  C. Deresinated balata may be added prior to the washing.  Other p  examples are given showing the variation produced by altering the proportions of alkali, time of treatment, temperature, &c.  Crude rubber is treated in the form of thin sheets.
Patent GB-199914-A (GB)
Title: Improvements in corner plates for reinforcing tinplate and the like boxes
Filed: 1922-05-22
Abstract: 199,914. Davies, J. O., and Jenkins, D. May 22, 1922. Corner strengthening-pieces.-Boxes for packing tin plates &c. are reinforced by overlapping truncated triangular sheet metal plates a which are applied to opposite ends and extend across the top or.bottom edges of the box.
Patent GB-265446-A (GB)
Title: Improved air-supplying device for stoves, and the like
IPC: F24B1/19
Filed: 1926-06-08
Abstract: 265,446. Esbensen, C. June 8, 1926. Air supply for combustion. - A device for supplying air to a stove from a point outside the room in which the stove is situated comprises a box-like casing 1 having a side extension 2 containing a valve d and connected by a tube f, which may be flexible to the outside air supply; in the case shown, the tube f is connected to a pipe g passing through the floor. The casing is secured over the air supply opening of the stove, the damper spindle, from which the damper is removed, passing through central openings b in the two faces of the casing. Openings a are provided in the side of the casing next the stove for the passage of the air.
Patent GB-1189384-A (GB)
Title: Improvements relating to Presses
Inventor: CHATTERTON REUBEN
IPC: F16N7/36
Filed: 1968-03-26
Abstract: 1,189,384. Bearings; lubricating. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. 31 Jan., 1969 [26 March, 1968], No. 14487/68. Heading F2A. A guide pin B of a power press (not shown) is mounted in a top die bolster A and is provided with a longitudinal bore E and with a transverse bore F which connects to the bore E. The guide pin B is used with a guide bush C which is mounted in a bottom die bolster D; has one end closed by means of a plate J; has a skirt H, which may be integral therewith; and has an overflow hole formed therein. During a pressing operation, the pin B enters the bush C and forces lubricant from a temporary reservoir formed in the bush, through the bores E and F and into a reservoir formed between the pin B, the bush C and the skirt H. When the pin B is withdrawn from the bush C it is lubricated by means of lubricant contained in the temporary reservoir.
Patent GB-1337652-A (GB)
Title: Electrical circuit packaging structure and method of fabrication thereof
IPC: H01L23/538
Filed: 1971-05-12
Abstract: 1337652 Making circuit components BUNKER-RAMO CORP 12 May 1971 [25 June 1970] 14545/71 Addition to 1210321 Heading B3A [Also in Division H1] A metallic wafer 110 for use in electronic circuitry comprising a stack of such wafers is prepared by etching to form islands 115 surrounded by dielectric 116. Elongated conductors (140) (Fig. 11, not shown) may also be formed. Contacts 120 of material more maleable than that of the wafer are formed, possibly by electroplating, during the process. Essentially, the top surface of the wafer is etched, e.g. photolithographically, to define the conductor or island and then dielectric material is deposited in the resulting trough, e.g. 114. The process is repeated on the other side until the dielectric is exposed and the second trough is then filled. The desired island or conductor is then electrically is dated and supported by the dielectric. The maleable contacts provide good electrical contact between wafers when they are stacked. Reference has been directed by the Comptroller to Specifications 1,269,128 and 1,212,626.
Patent GB-634673-A (GB)
Title: Fluorinated olefin polymers
IPC: C08F14/18
Filed: 1947-06-02
Abstract: A polymer or copolymer of a fluorinated olefin containing more than two carbon atoms and in which the olefin is free from monofluorinated carbon atoms and has at least one polyfluorinated carbon atom is made by subjecting the olefin alone or with another polymerizable organic compound to polymerization conditions of temperature and pressure in the presence of a peroxy catalyst.  The fluorinated olefin may be 3,3,3-trifluoropropene; 2-methyl-3,3,3 - trifluoropropene; 3,3 - difluoropropene; 1,1-difluoropropene; 1,1,3,3-tetrafluoropropene; 4,4,4 - trifluorobutene; 3,3 - difluorobutene; 3,3,4,4,4 - pentafluorobutene; 1,1 - difluoro - 1 - butene; 3,3,3 - trifluoro - 2 - trifluoromethylpropene; 3,3-difluoropentene; 4,4-difluoro - 1 - pentene; 1,1 - difluoro - 1 - pentene; 4,4,5,5,5 - pentafluoro - 1 - pentene or 5,5,5-trifluoro - 2 - pentene.  One or more other halogen atoms may be present in the above fluorinated olefins.  The peroxy catalyst may be acetyl, propionyl, benzoyl, acetyl benzoyl, succinyl or lauroyl, peroxide, tertiary butyl hydroperoxide, tertiary butyl peroxide, or the sodium, potassium and ammonium salts of perphosphoric or persulphuric acids.  The polymerization may be effected in a solvent for the olefin and catalyst such as dimethyl phthalate, diethyl phthalate, dibutyl phthalate, diamyl phthalate, ethyl phenylacetate, amyl acetate, heptane, 1-4-dioxan or dibutyl ether. The other polymerizable organic compound may be another fluorinated olefine or styrene, vinyl ethers, diolefins, acrylic acid, dimethyl maleate or maleic anhydride.  The polymers or copolymers may be used as lubricants.ALSO:In the preparation of polymeric fluorinated olefins the preparation of two monomers is described.  In example (1), 3,3,3-trifluoropropene is prepared by chlorinating propylene chloride in the dark using as catalyst iron filings, treating the so-formed trichloropropane with sodium hydroxide solution, and heating the resulting dichloropropene in a pressure vessel with anhydrous hydrogen fluoride at a maximum pressure of 800 lbs. per sq. inch, to effect conversion to trifluoropropane.  The trifluoropropane is then converted to 3-chloro-1,1,1-trifluoropropane by photochemical chlorination of the trifluoropropane in the vapour state and the desired 3,3,3-trifluoropropene obtained from the 3-chloro-1,1,1-trifluoropropane by treating with alcoholic potash. In example (2), 2-methyl-3,3,3-trifluoropropene is prepared by treating amyl trifluoroacetate with methyl magnesium iodide to yield, after decomposition of the Grignard compound, 2-methyl-1,1,1-trifluoro-2-propanol, which after dehydration with phosphorus pentabromide yields the desired monomer.
Patent GB-481347-A (GB)
Title: Improvements in and relating to pistons
IPC: E05C1/16
Filed: 1937-05-27
Abstract: 481,347. Pistons. BOHN ALUMINUM & BRASS CORPORATION. May 27, 1937, No. 14707. Convention date, July 20, 1936. [Class 122 (i)] In a light metal piston having an oval skirt with its inner axis coincident with the gudgeon pin axis, and thrust faces 18, 19 separated from the head by slots 26 and connected by webs 22 carrying the gudgeon pin bosses, a plate 28 of material of low-coefficient of expansion extends along the inner wall of each web 22 between the bosses and one or both thrust faces. The thrust face 18 may be slit at 27 along the whole or part of its length and each face 18, 19 may be relieved on areas 21 bounded by curved lines 20. The slit face is stiffened by webs 23 extending towards it from the bosses. Bands 24.which connect the lower ends of the thrust faces are separated from the bosses by slots 25 which are enlarged on the side of the bosses towards the thrust face 19. Struts 13 of U-form extend between the bosses and head. Webs 22 may be parallel or relatively inclined. Specifications 313,893, [Class 122 (i)], 417,007, 436,066, and 448,260 are referred to.
Patent GB-684547-A (GB)
Title: Improvements in electric resistances
Inventor: WEIDES ERICH
IPC: H01C7/04
Filed: 1951-06-21
Abstract: 684,547. Metal oxide resistors; temperaturevariable resistors. STEATIT - MAGNESIA. AKT.-GES. June 21, 1951, No. 14725/51. Drawings to Specification. Class 37. A resistor variable with temperature and voltage magnitude has a resistance element composed of a mixed ferrite which essentially comprises 50 to 85 per cent ferric oxide with zinc oxide and nickel oxide and may comprise minor proportions of manganese dioxide and magnesium oxide. One example utilizes 0.5 to 10 per cent magnesium oxide, 3 to 5 per cent manganese dioxide, 5 to 10 per cent zinc oxide, 5 to 10 per cent nickel oxide and 70 to 85 per cent ferric oxide. Another example utilizes 10 to 20 per cent zinc oxide, 10 to 30 per cent Manufacture consists in heat treatment according to known technique and forming into required shapes, e.g. cylindrical shapes. The resistance element may be surrounded by a heat conductive, e.g. cement, covering or heat insulating, e.g. ceramic covering, or both forms of covering may be used. Applications to radio circuits are described, Figs, 2, 3 and 4 (not shown), with resistors according to the invention serving as current and voltage delay devices, current peak suppressors and scale lamp resistors ensuring cathode heater circuit continuity. In such applications the speed of response may be controlled according to the thickness of the ceramic or cement covering.
Patent GB-402114-A (GB)
Title: Improvements in or relating to chargers or loaders for cinematograph cameras
IPC: G03B17/26
Filed: 1932-05-24
Abstract: 402,114. Kinematograph apparatus. GANA, B. J. D., 72A, Regent's Park Road, London. May 24, 1932, No. 14744. [Class 97 (i).] Relates to daylight chargers for cameras of the kind in which a reel of unexposed film and a winding - spool are mounted side by side in the same plane, and comprises a platelike support carrying a pair of identical film casings each having openings for the passage of the film and for the insertion of the winding spindle, the casings being detachably secured to the face of the support with their film openings properly presented. As shown, the support comprises a plate 22 formed with raised portions 44 to receive a pair of box-like casings 25 of the kind set forth in Specification 402,142 which are recessed to fit over the portions 44 and are secured in position by tongues 42 passing through slots 43, the relative positions of the slots being such that the film openings 28, Fig. 3, are properly presented. The plate is formed with an aperture 46, Fig. 4, for the passage of the winding spindle which engages a key 39, Fig. 10, on a hollow bobbin 38 furnished with a spring clip 40 and mounted upon a flange 37 on the casing. The plate and casings may be formed as sheet metal stampings or pressings.