baber/WOPTO huggingface dataset:
Patent GB-784673-A (GB)
Title: A method of producing printed circuit master drawings
Inventor: FULLER WILFRED HENRY
IPC: H05K3/00
Filed: 1956-02-28
Abstract: 784,673. Etching. STANDARD TELEPHONES & CABLES, Ltd. Feb. 28, 1956, No. 6114/56. Class 100(2) [Also in Groups XV, XX and XXXVI] A method of producing a printed circuit master drawing from a scraper board, consisting of a base board covered with a white layer which is in turn covered with a black layer, comprising removal of portions of the black layer corresponding to a required circuit or its complement. As shown the circuit pattern is engraved on the scraper board which consists of a soft pulp-board backing on which is coated a layer of pure white china clay and chalk to a thickness of 0.02-0.04 inches which is covered with a 'very thin layer of black ink. The printed circuit may be produced from the master drawing by photo-engraving. Firstly an actual size reverse pattern photographic transparency is produced and secondly a transparent negative is obtained which is used to make a contact print on a copper-clad laminate coated with a photographic emulsion. The negative is placed in contact with the coated surface and atter exposure to light the laminate is developed whereby the unexposed unprinted portion of the emulsion is dissolved to leave the light-hardened emulsion as an acid resistant pattern. The laminate is then placed in an etching solution which removes all the copper that is not protected by the emulsion. If the printed circuit is produced by a screen printing method, a reverse pattern photographic transparency of the master drawing is produced as before and is used to make a stencil which is placed on to a silk or metal screen. The screen and stencil are placed on a copper-clad laminate and an acid-resistant liquid is spread over the stencil, and after being forced through, forms a pattern corresponding to the required circuit pattern. The laminate is then etched as before. The above methods in which larger areas of copper are etched away may be replaced by a method in which only thin lines are etched.
Patent GB-642879-A (GB)
Title: Improvements in or relating to ash containers
IPC: F24B13/00
Filed: 1949-03-07
Abstract: 642,879. Ash containers. STEEL PRODUCTS ENGINEERING CO. March 7, 1949, No. 6127. Convention date, March 12, 1948. [Class 26] A portable ash container 20 for use with an ash conveyer 11 having a discharge opening 12 in its upper part comprises a valve 33 rotatable between positions opening and closing an ash-receiving opening 26 in the container bottom, means for mounting the ash container on the conveyer in ash-receiving position with means for interlocking the ash container and the mounting together with means for preventing removal of the ash container except when the valve 33 closes the ash-receiving opening 26. The ash container 20, provided with a lid 21, has a valve 33 rotatably mounted between the plate 36 and the bottom 25, the valve 33 having an opening 34 adapted to register with the ash-receiving opening 26 which is provided with a funnel 30 up which the ash is passed to overflow into the container 20. The ash conveyer 11 is provided with a tubular guide 13 surrounding the discharge opening 12 through which the ash is forced by right- and left-hand worms in the conveyer and with a mounting plate 40 provided with dogs 42 for securing the ash container. In operation the valve 33 is set so that its opening 34 registers with the tubular guide 13 of the mounting 40 while the opening 26 of the container is disposed as shown in Fig. 4. On bringing the container on to the mounting plate a rib 50 of the valve 33 is embraced by ribs 51 on the mounting plate 40 and the dogs 42 pass through recesses 45 at opposite ends of the plate 36 and the position of the container in relation to the conveyer 11 is as shown in Fig. 5. Rotation of the ash container anticlockwise brings the opening 26 into register with the valve opening 34 and discharge opening 12, 13, and removal of the container is prevented by the dogs 42 engaging the rim of the plate 36. A projection 55 prevents the recesses 45 from registering with the dogs 42 for removal of the container unless the ashreceiving opening 26 is closed by the valve 33.
Patent GB-892493-A (GB)
Title: Improvements in or relating to pressure measuring apparatus
IPC: G01L21/00
Filed: 1959-02-23
Abstract: 892,493. Measuring electrically. DUNKEL, M. M., [trading as LEYBOLD'S NACHFOLGER, E.]. Feb. 23, 1959 [Feb. 22, 1958], No. 6158/59. Class 40 (1). In a heat conduction manometer comprising one or more temperature-sensitive measuring elements, e.g. resistors or thermocouples, and one or more apertured or bifurcated oscillating members operable to induce a flow of the gas whose pressure is to be measured around or past the measuring elemen(s), the temperature of the measuring element(s) is maintained constant and the heating power necessary to achieve this is measured. In Fig. 1, a leafspring 5 of ferromagnetic material is oscillated by an iron-cored solenoid 2 supplied with voltage- and frequency-stabilized A.C. to create a flow of the test medium around a semi-conductor bead 6 located within an aperture 51 in the leaf-spring; alternatively, the spring may be bifurcated about the bead. The bead is connected to a measuring device 14 comprising a bridge circuit the output of which controls the heating current to the bead and actuates a meter 15 to give an indication of the test pressure. In a modification, two oscillating leaf-springs and two semi-conductor beads are used. The leaf-spring(s) may be oscillated by electrostatic, piezo-electric or mechanical drive, and the measuring element(s) may be fixed to the spring(s) for oscillation therewith. The amplitude and/or frequency of oscillation of the spring(s) may be kept constant or varied, for example, in dependence on the current being measured; electrical or mechanical compensation may be provided to off-set the effect of unwanted variations of oscillation amplitude. The manometer may also contain an ordinary heat conduction measuring element.
Patent GB-861181-A (GB)
Title: Improvements in or relating to electric circuit arrangements for starting and operating electric discharge lamps having heatable electrodes
Inventor: CATES JULIUS
IPC: H05B41/232
Filed: 1958-02-26
Abstract: 861,181. Discharge lamp circuits. GENERAL ELECTRIC CO. Ltd. Feb. 25, 1959 [Feb. 26, 1958], No. 6183/58. Class 38 (4). A circuit for one or more discharge lamps whereby the heater and discharge currents are supplied at differing frequencies from one pair of lines 6, 7 comprises frequency-sensitive circuits to separate the two frequencies before applying them to their respective loads. One of the two frequencies may be zero, viz. D.C. A 50-cycle discharge current supply is connected between terminals 2, 3, and a 400-cycle supply between terminals 4, 5, a capacitor 9 and an inductor 10 being provided to by-pass the 400- cycle generator. The heaters are connected to windings 13, 14, respectively of a transformer whose primary winding 11 is connected in series with a blocking capacitor 12 across the lines 6, 7, which also feed the 50-cycle discharge current through a switch 16 and choke 15. A power factor correcting capacitor 18 in series with an inductor 19 is connected across the lamp 1. Other arrangements are described having a D.C. component for the discharge currents, in which cases a reversing switch is incorporated. The heater and discharge current supplies may be alternatively connected in parallel.
Patent GB-547927-A (GB)
Title: Improvements in insecticidal preparations
IPC: A01N65/12
Filed: 1941-05-14
Abstract: 547,927. Insecticides. STAFFORD, ALLEN & SONS, Ltd., and WEST, T. F. May 14, 1941. No. 6235. [Class 81 (i)] Extracts of pyrethrum in kerosene or heavy petroleum oil are stabilized by adding thereto a solution of a polyhydric phenol (e.g. hydroquinone, pyrogallol, pyrocatechot, phloroglucinol) in a neutral solvent soluble in the kerosene or heavy oil having a high boiling point (i.e. above 150‹C.) and free from unpleasant odour or physiological action. Suitable solvents are higher ketones (e.g. cyclohexanone), terpenic alcohols or their esters. Specification 493,074 is referred to.
Patent GB-1023728-A (GB)
Title: Improvements in or relating to cartons
IPC: C07C51/41
Filed: 1965-02-12
Abstract: 1,023,728. Display cartons. DYNAMIT NOBEL A.G. Feb. 12, 1965 [Feb. 14, 1964], No. 6296/65. Heading B8P. The lid 7, side flaps 9, 10 and portion 14 of a side wall may be torn from a carton along per forations 11, 12, 13 so as to leave a display carton, Fig. 3 (not shown), having an open top and side wall.
Patent GB-107607-A (GB)
Title: Improvements relating to Travelling Apparatus for Removing and Melting Snow or Ice.
Inventor: FRIEDMAN SAMUEL
IPC: E01H5/10
Filed: 1916-05-04
Abstract: 107,607. Friedman, S. May 4, 1916. Taking up refuse for removal; snow and ice melters other than cauldrons.-Relates to travelling apparatus for removing and melting snow and ice, and consists in providing an inclined shoot on to which the snow is forced by a plough adjustably mounted at the front of the shoot, the snow being carried up the shoot by an endless conveyer having shovels which cut through the snow, and being deposited in a tank where it is melted by a solution of salt or similarly acting chemical. Fig. 1 shows a vehicle carrying a front plough 25 which forces the snow on to 'an inclined shoot 4 where it is cut into by shovels 7 on an endless conveyer 6 and raised to a bin 5, above which is arranged a receptacle for chemical solution. The container 46 for the chemical communicates with a reservoir 45 for the solution by holes 47 which can be opened one at a time by moving a slide 48 outwards. The solution may then be passed through a valve 43 into a lower compartment 49 and directed on to the snow through the passages shown. Exhaust gases from the. propelling motor may be admitted to the tank through a pipe 57, and an agitator 52 may be provided to facilitate melting. The plough 25 is fitted with a hinged rear portion 19 which can be lowered to the position shown in dotted lines to release excess of snow, or a spring controlled flap 118 may be employed as shown in Fig. 6. The quantity of snow passing on to the plough is regulated by a screwoperated gauge 32. A spring-controlled guard plough 26 is mounted in front of the plough 25 to permit of passage over obstructions.
Patent GB-924816-A (GB)
Title: Ionic bromination of organic compounds
IPC: C07C37/62
Filed: 1960-02-24
Abstract: A process for the ionic bromination by substitution of an organic compound which contains at least one reactive hydrogen atom comprises treating said compound in an aqueous medium with bromine, hydrogen bromide or an organic or inorganic bromide which is at least sparingly soluble in the reaction mixture and simultaneously or subsequently introducing chlorine into the reaction mixture.  A polar medium such as a mixture of water and glacial acetic acid is preferred.  Examples describe the preparation of 41-bromo-acetanilide, 2-bromo-4,6-dichlorphenol and 3, 5,41-tribromosalicylanilide from acetanilide, 2, 4-dichlorphenol and salicylanilide respectively.  Numerous other specified starting materials include amides, imides, aldehydes, acids, esters, ethers, heterocyclic compounds, aromatic hydrocarbons, ketones, including cholestanone, nitriles, phenols, sulphones, sulphoxides and nitro compounds.ALSO:A process for the ionic bromination of organic compounds, fluorescein being specified, which contain at least one reactive hydrogen atom comprises treating said compound in an aqueous medium with bromine, hydrogen bromide or an organic or inorganic bromide which is at least sparingly soluble in the reaction mixture and simultaneously or subsequently introducing chlorine into the reaction mixture.
Patent GB-326010-A (GB)
Title: Improvements in ball and socket connections
IPC: F16C11/06
Filed: 1929-02-28
Abstract: 326,010. Skillman, N. Feb. 28, 1929. Ball joints.-A ball- and-socket joint more particularly adapted for the steering gear of motor road vehicles comprises a socket member 16 having a preformed block of fibrous lubricant-impregnated material 12 which is highly compressed to inherently retain its shape and is formed with a concave face for engagement with the ball 9, the block being thereafter positioned within a container 15 to form therewith a unitary structure. As shown, one socket member abuts against the ball by a spring 13, which is held in place by a screwed plug 14. The containers for the bearing blocks are preferably formed of sheet metal, and the blocks or pads are formed of shredded asbestos, graphite and a suitable binder such as calomel, with or without the use of brass wire as a reinforcement.
Patent GB-164139-A (GB)
Title: Improvements in the manufacture of tanks and the like
IPC: B65D90/02
Filed: 1920-03-04
Abstract: 164,139. Guest, W. March 4,1920. Tanks are built from a series of wrought metal sections each formed of a metal plate having a continuous flange n, n<2>, Figs. 8, 8<a>, 8<b>, around its periphery for receiving bolts for securing the plates together, the web of the plate adjoining the flanges being formed in one plane and the remainder of the plate n<1> being formed of truncated pyramidal form. The bottom of the tank is of reinforced concrete, the plates being bolted to the reinforcements. In a rectangular tank, the flanges n<2> are at right-angles to the plane of the plate; but in forming a cylindrical tank with vertical sides the horizontal flanges are at rightangles to the plane of the plate, as at n<2>, Fig. 8<b>, while the vertical flanges are bent outwards as at n, Fig: 8<a>. The horizontal edges may be curved to follow the curve of the tank. Figs. 2, 3 and 4 show the construction of the base of a rectangular tank in which an angle curb a is connected to light supporting beams b placed at intervals, for instance at the vertical wall joints, and connected by flat metal bars c for resisting the outward thrust of the walls and reinforced by light rods d spaced at close intervals, the whole being bedded in concrete. In the case of cylindrical tanks, the beams supporting the tank walls are arranged radially. When supported on a tower or similar structure, the supporting beams s, Figs. 9 and 10, which are heavier than those shown in Figs. 2, 3 and 4, have attached to them light angle-sections t on which rest the reinforcing rods u and the thin sheet metal w on which the concrete is laid.
Patent GB-341758-A (GB)
Title: A method of and means for supplying liquid fuel or other fluid from a supply source to a delivery point at or adjacent a source of power remote from the supply source
Filed: 1930-03-03
Abstract: 341,758. Pumping fluids. DODSON, E., 66, Lewin Road, Streatham, London. Feb. 26, 1930, No. 6382. [Classes 8 (i) and 102 (i).] A pump 3 situated near a supply source 1 draws liquid therefrom and discharges it to a remote power source 10, from which the pump is operated by an engine-driven air pump 2. The air supply, is controlled by the pressure of liquid in the discharge pipe 9 acting on a diaphragm 13 connected to a piston valve 18 arranged in the air pump suction. Any one of a number of liquid pumps may be used by suitable adjustment of interconnected selective cocks 38, 40, situated in the air and liquid pump discharges respectively. In a modification the liquid pump 3 is driven by the actual liquid being pumped. In this case the engine-driven pump 56 draws from a chamber 50 in the liquid pump discharge and the speed is controlled by a float 54 and valve 53. The invention is stated to be applicable to pumping from wells, supplying fuel from the float of a seaplane to the engine, or transferring ballast from one tank to another in airships. It may also be applied to pumping gaseous fluids.
Patent GB-716392-A (GB)
Title: Improvements in and relating to electric thermostats
IPC: H01H37/46
Filed: 1952-03-14
Abstract: 716,392. Thermal switches. MACLAREN & CO., Ltd., R., and RICHMOND, T. G. Feb. 5, 1953 [March 14, 1952], No. 6682/52. Class 38(5) A rod-and-tube type thermostat comprises an insulating body, e.g. of porcelain, having a base 10, side walls 11, and a rear wall 12. A hole 13 in the base 10 receives the threaded end of an expansible tube 15 fixed by nuts 16 and secured at its lower end to a non-expansible rod 16a. Projections 20 on the side walls 11 are embraced by terminals 21 secured by screws 23, extensions 24 of the terminals carrying fixed contacts 25 adjustable by screw studs 25a. A plate 26a secured by screws 26 to the insulating body has connected thereto by screws 31 a snap-acting bowed spring strip 27 slotted at 27a to form an inner bowed compression member 27b, the arrangement preferably being in accordance with Specification 615,467. The upper end of the strip 27 carries a bridging contact 28 whilst the bent-back lower end 29 carries a set screw 30 which engages a flexible lever 32 secured by the screws 31 and having a tongue 33 engaging a ledge 18 formed on a porcelain block 17 freely supported on the rod 16a. A temperatureadjustment nut 19 bears on the block 17 so that on temperature rise the block moves downwardly and through the tongue 33 and set screw 30 operates the strip 27 so that contact 28 disengages the contacts 25. Set screw 30 provides for initial adjustment of the thermostat. Alternatively, the rod may be expansible and the tube non-expansible.
Patent GB-685777-A (GB)
Title: Improvements in or relating to heat exchangers
IPC: F28D17/02
Filed: 1950-03-17
Abstract: 685,777. Regenerative heat-exchangers for cooling gases &c. HOWDEN and CO., Ltd., J., and ULANDER, P. H. N. April 16, 1951 [March 17, 1950], No. 6776/50. Class 64 (i) A regenerative heat-exchanger for transferring heat between a gas and a liquid e.g. to cool the gas, comprises a heat transfer body 1 carried in a cylindrical rotor 2 which is rotatable about an upright axis 3 within a casing 4 and forms a common downflow duct for gas and liquid, a liquid distributer 7 attached to the top of the casing 4 and provided with conduit and openings 22 for the passage of liquid and gas respectively to the body 1, a gas inlet duct 21 above the body 1 and distributer 7, and a receiving chamber 14 below the casing 4 and body 1 to receive the gas and liquid, the chamber having a sump 13 for the liquid and a counterflow outlet duct 23 for the gas. The liquid conduits in the distributer 7 are four perforated tapering radial tubes. The liquid leaving the body 1 and not entrained by the cooled gases is partly collected in radial troughs 9 drained by pipes 10 into an annular space 11 leading to sump 13, and is partly deposited on the conical wall 15 also draining into the space 11. Liquid entrained by the gas is separated from it by centrifugal action produced by swirl vanes 16. A float controlled valve 19 discharges accumulated liquid. According to the Provisional Specification, the body 1 may be fixed and the liquid distributer may rotate.
Patent GB-773162-A (GB)
Title: An improved method of manufacture for shafted striking implements
Inventor: CARLTON WILLIAM CHARLES
IPC: B29C55/00
Filed: 1955-03-08
Abstract: In making shafted implements such as hammers, golf-clubs, fishing rods or badminton, &c. rackets, the shaft is made of a material such as nylon which increases in strength when stretched, is initially moulded to a length less than that desired, and is finally stretched to the desired length.  As applied to rackets or fishing rods, the whole article may be a onepiece moulding of the material.ALSO:A fishing-rod is moulded to a length less than that desired and is then stretched to the desired length, the material being one that increases in strength on being stretched e.g. nylon.
Patent GB-700773-A (GB)
Title: Improvements in or relating to railway wagon haulage apparatus
IPC: B61J3/00
Filed: 1951-03-21
Abstract: 700,773. Railway wagon haulage apparatus. MITCHELL, F. G. March 14, 1952 [March 21, 1951], No. 6810/51. Class 104 (2). A railway wagon haulage apparatus in which a wheeled mule 6 is provided with a hooked arm 10 pivotally mounted thereon so as to engage a wagon coupling chain 14 and which runs on the bottom rails 7 of a track located between the railways rails 5, and provided with upper guides 8 to prevent the mule 6 lifting during the hauling movement, has wing pieces 15 spaced apart on opposite sides of the hook 10 to form a guide which embraces a link of the chain 14 to centralize the eye of the link with respect to the hook 10. The wing pieces 15 may be formed as hooks with their tips turned outwardly. The mule 6 is driven by an electric motor or other suitable means through a drum 20 and a rope 16.
Patent GB-694463-A (GB)
Title: Heat-sealable splicing tape resin and process for preparing same
IPC: C08F8/12
Filed: 1951-03-22
Abstract: Polyvinyl acetate hydrolysed to not more than 55 per cent and soluble in methanol is made by the alcoholysis of polyvinyl acetate in the presence of excess methanol, an alkaline alcoholysis catalyst, e.g. sodium hydroxide, in an amount not more than 15 per cent of the stoichiometric equivalent of the polyvinyl acetate, and water in an amount between 6.7 and 20 per cent by weight of the whole reaction solution.  If desired, methyl acetate may replace up to 20 per cent by weight of the methanol. Films may be cast from methanol solutions of the polyvinyl alcohol-acetate and if desired the solutions may contain a water-soluble plasticizer such as glycerine, monacetin, diacetin or glycol.  The partially hydrolysed polyvinyl acetate may be used as an adhesive.
Patent GB-480143-A (GB)
Title: Insecticide against scale-insects
Filed: 1937-08-09
Abstract: An insecticidal composition, particularly for use against scale-insects, comprises a major proportion of raw castor oil as the principal insecticide, ammonium or other alkali salt of sulpho-ricinic acid, and a resin soap, together with a small proportion of a -or b  - naphthylamine, a - and b  - naphthalene sulphonic acid and cresol.  Mineral oil may be added as a diluent, if desired, in the proportion of 30-40 per cent, and the product is used in the form of an aqueous emulsion.  Eucalyptus oil or similar essence may be added if desired.  The pH value of the product is preferably adjusted to 8,5 to 9 by treatment with dilute ammonia.
Patent GB-451611-A (GB)
Title: Improvements in depilatories
IPC: A61Q9/04
Filed: 1935-03-06
Abstract: A depilatory for removing human hair comprises 1 to 6 parts of strontium sulphide mixed with 99 to 94 parts of calcium carbonate. In place of calcium carbonate there may be used the same proportions of strontium carbonate, powdered quartz, lithopone, barium sulphate, stannic acid or aluminium hydroxide. Other filling substances, e.g. starch, may be added.  Comparisons are made between the time of depilation when using the above mixtures and when using mixtures of strontium sulphide with gypsum, talc, titanic acid, magnesium carbonate, magnesium oxide, kieselguhr, calcium hydroxide and zinc oxide.  Specification 18029/89, [Class 1], is referred to
Patent GB-385481-A (GB)
Title: Improvements in or relating to machines for the preparation of coffee infusion
IPC: A47J31/40
Filed: 1932-03-08
Abstract: 385,481. Coffee-infusion machines. GRILLI, I., 21, Via Crocifisso, Milan, Italy. March 8, 1932, No. 6976. [Class 129.] A machine for the automatic preparation of coffee comprises two chambers 3, 4 which move in an orbit in which each chamber successively receives ground coffee in one position, steam and water at another position, and in a third position, is over a discharge pipe at which the used grounds are washed out by a steam and water jet. The chambers 3, 4 are connected in a figure-of-8- shape and rotate about a vertical spindle 75 passing through a box 32. In the position shown in Fig. 1, the chamber 4 is receiving ground coffee from the shoot 68, and the chamber 3, having received coffee, is receiving a jet of steam and water from the pipe 36. The infusion is delivered through the filter 63 and pipe 51. In an intermediate position, the emptied chamber 3 is positioned over a discharge pipe and the exhausted coffee grounds are washed out by a steam and water jet. The device is operated by an electric motor 17.