baber/WOPTO huggingface dataset:
Patent GB-991521-A (GB)
Title: Improvements in or relating to coin freed apparatus
Inventor: MAXWELL STEWART ALFRED
IPC: G07F15/00
Filed: 1963-01-11
Abstract: 991, 521. Coin-freed apparatus. FISHER & LUDLOW Ltd. Jan. 10, 1964 [Jan. 11, 1963], No. 1314/63. Heading G4V. A coin-freed apparatus supplies energy to a material to be delivered by the apparatus upon insertion of the appropriate coinage and upon the operation of a manual control which is adapted to release the energy and permit delivery of the material for as long as the control is being operated and the energy has not been exhausted. As shown for an instantaneous water heater, a coin inserted into a coin selector 11 incorporating a testing mechanism falls down an acceptance shoot 12 into a receptacle 13 and in its passage operates an arm 26 which, through a relay, opens a water inlet valve 15 and causes a blocking member 31 to project across the coin shoot and prevent the insertion of a further coin. To draw hot water, the user opens the outlet valve 16 which allows the water to pass into a heating chamber 17 and then discharge through an outlet 20 provided with a restriction. A pressure switch 19 in the heating chamber operates when the pressure of water has built up to initiate the supply of electrical energy to the water and start a rotary timer 22. When the timer has reached the end of its cycle it closes the valve 15 thereby causing the pressure switch to cut out the heating element and stop the timer. The supply of hot water may be interrupted by opening and closing the valve 16, the timer also being interrupted at the same time. The blocking member 31 is arranged to be withdrawn as soon as the timer commences its cycle so that a subsequent user can insert a coin in the event of someone closing the valve 16 before the timer cycle has finished; a subsequent user opening the valve 16 would initially receive hot water for the remainder of the previous user's cycle. An over-temperature switch 34 protects the apparatus in the event of a faulty pressure switch.
Patent GB-1347174-A (GB)
Title: Coated microporous films
IPC: C08J7/056
Filed: 1972-01-12
Abstract: 1347174 Coated microporous films CELANESE CORP 12 Jan 1972 [14 Jan 1971] 1346/72 Heading B5B A microporous polymer film having a crystallinity of the annealed and drawn film above 30%, an average pore size of from 100 to 12,000 Angstrom units and a surface area pre c.c. of from 2 to 200 sq. inch, and passing more than 0À10 ml. of water per minute per sq. cm. of surface area under a pressure difference of 100 p.s.i. between its surfaces and by the presence at its surfaces of a surfactant which is substantially free from inorganic acids and bases, exhibits an aqueous contact angle of less than 80 degrees when applied to a conventional non- cellular film of the same polymer and renders the microporous film hydrophilic. The film may have a basis of polyethylene or polypropylene and the surfactant which can be anionic, cationic, non-ionic or amphoteric may comprise hexachlorophene or an alkali metal salt of a fatty acid; a large number of specific surfactants are listed. Suitably, the surfactant forms 0À1 to 20% of the total weight of the surfactant-containing film, and is applied to the film in solution in an organic solvent, the coated surface is dried, washed with water and again dried. In examples a polypropylene film is meltextruded to form a film which is oven annealed with air under slight tension at 140 C. for 30 mins., allowed to cool, cold drawn at 25 C. and then hot drawn at 145 C., the total draw being 100%, heat set at constant length at 145 C., and then dipped into the surfactant solution in hexane or ethanol, allowed to dry, washed with cold water and dried.
Patent GB-157448-A (GB)
Title: Process for the protection of plants against nightfrost and for the preparation of substances to be applied to this end
IPC: A01G13/06
Filed: 1921-01-10
Abstract: 157,448. Linden, C. A. J. J. van der. Dec. 20,1919, [Convention date]. Void [Published under Sect. 91 of the Act]. Meteorological conditions, local, influencing.- Plants are protected from frost by forming a cloud of heavy smoke by burning a fuel made by mixing or impregnating absorbent or porous materials with products of the distillation of coal and petroleum. Peat-litter and peat-dust are given as examples of the absorbent material and the following as examples of the impregnating substance, viz. naphthalene, a-methylnaphthalene, #-methylnaphthalene, diphenyl, acenaphtane, penta-methylbenzol, hexa-methylbenzol, methylidene and hydrated naphthalenes, and anthracene. Blowing-apparatus &c. may be used for distributing the smoke. The fuel may be pressed into briquettes.
Patent GB-863149-A (GB)
Title: Improvements in or relating to the production of plutonium
Inventor: NAIRN JOHN SYME
IPC: C22B60/04
Filed: 1959-01-15
Abstract: 863,149. Plutonium. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Jan. 1, 1960 [Jan. 15, 1959; April 14, 1959], Nos. 1513/59 and 12708/59. Class 39(4). Plutonium metal is produced by reducing a plutonium halide with an alkali or alkaline earth metal in a fused salt medium at above the melting point of plutonium. The halide may be fed to a column at an intermediate point, the reducing metal introduced near the bottom of the column, and plutonium metal withdrawn at the bottom of the column; either or both the halide and the reducing metal may be dissolved in the fused salt before entering the column. The preferred reducing metals are calcium, barium, strontium, and lithium, and the fused salt medium preferably comprises chlorides or fluorides of these metals.
Patent GB-574299-A (GB)
Title: Improvements in or relating to material and tools for grinding and like processes
IPC: B24D18/00
Filed: 1944-01-27
Abstract: 574,299. Brushes ; diamond and like tools ; grinding; glass. EVERETT, S. J. Jan. 27, 1944, Nos. 1569 and 7603. [Classes 19, 56, 60 and 124] [Also in Groups V, VI and XXII] In the manufacture of tools for use in cutting and abrading abrasive wires 1, Fig. 2, are formed by coating fine wires or foil with powdered diamond or hard alloy, assembling the wires or winding the foil into a core that is enclosed in a metal sheath 2 and the whole is drawn, rolled or swaged to a substantially homogeneous mass. A small quantity of flux and hard solder may be incorporated, the solder becoming melted during annealing or heat treatment between successive reductions. The wires may be copper plated to assist the consolidation. The sheath may be wholly removed after reduction or a part may be left to assist in mounting the tool. The consolidated wires &c. may be further reduced after removal of the sheath. The wires may be of stainless steel and the sheath of copper, brass wires may be used with a steel sheath. The sheath may be of nickel or nickel silver. The wires may be coated with oil, cellulose lacquer, flour paste &c. to cause the abrasive powder to adhere. Powdered tungsten or boron carbides may be used as the abrasive. Instead of wire &c. the core may be formed from ceramic powder in which the abrasive is dispersed. The powder is packed in a sheath with or without a central reinforcing core. A number of examples are given with specified proportions, times, temperatures, and dimensions. The finally resulting abrasive wire can be used in a fret saw for cutting ceramic material or lengths may be swaged to form files, dental broaches, &c. The ends of a wire may be united to form a band saw or a wire may be coiled on a body to form a grinding wheel and the section may be such as to produce a wheel for grinding screw threads, Fig. 9. A wire 26, Fig. 10, may be soldered or otherwise mounted in a groove in the periphery of a thin disc 12 for use in cutting glass, stone, &c. In the production of dental burrs a comparatively large diameter wire is swaged or worked to form a head 21 which, after removal of the sheath is attached to a spindle 22. The abrasive wire may be used to form an adjustable lapping tap or it may be cut up and bundled to form a brush for use in frosting glass or for smoothing and finishing surfaces or for use in dentistry. The initial assembly may have a mild steel core afterwards removed by drilling to form a tubular cutting tool.
Patent GB-1516241-A (GB)
Title: Process for extracting metal values from manganiferous ocean floor module ore
IPC: C22B15/00
Filed: 1976-01-15
Abstract: 1516241 Recovering metal values METALLURGIE HOBOKEN-OVERPELT 15 Jan 1976 [17 Jan 1975 11 July 1975] 01574/76 Heading C1A Metal values are extracted from manganese nodule ore containing Mn, Ni, Co, Cu and Fe with or without Mo, V, Al or Zn by (a) treating the ore with a solution containing at least 150 g/l HCl in an amount 0À95-1À3 times that needed to convert the metal values to chlorides, to form a starting pulp containing the metals in solution, Cl 2  and solid residue; (b) subjecting the pulp to at least 2 acidifications to restore an HCl content of 150 g/l, adding fresh ore each time in amount to obtain the acid : ore ratio above thus producing Cl 2 , a concentrated chloride solution and solid residue; (c) separating solid residue from the resulting concentrated metal solution; (d) separating all the above metal values except Mn from the chloride solution; (e) treating the Mn-containing solution with Cl 2  while maintaining pH above 0À5 by addition of Mg or Mg (OH) 2 , at least the major part of the Mn being pptd. at pH between 3 and 7 as MnO (1+x)  where x is between 0À5 and 0À7; (f) separating the MnO (1+x)  from the resulting MgCl 2  solution; (g) pyrohydrolysing this MgCl 2  solution to regenerate MgO and HCl and (h) recycling the HCl to step (b) and the MgO to step (e). Procedures are described for effecting separation step (d) when the ore contains all the above-tested metal values and for further processing the metal values separated to obtain Al and Fe oxides; Cu, Co and Ni sulphides; Cu and Zn sulphates and Zn, Ni, Co, Mo and V chlorides.
Patent GB-157904-A (GB)
Title: Improvements in or relating to electrically heated boilers
IPC: F22B1/30
Filed: 1921-01-10
Abstract: 157,904. Meystre, E. Dec. 5, 1918, [Convention date]. Generating by electricity.-Steam is generated by the passage of current through water between electrodes 0, E disposed in the ascending tube, D of a circulatory system arranged beneath the boiler N. In a modification, the lower electrode is arranged in the distributor C. In another modification, Fig. 6, both electrodes are arranged in a chamber K connected in the ascending tube; the chamber may have curved or spiral conduits G to give a rotary motion to the water on entering and to remove this motion on leaving. The upper electrode may be mounted on a spindle, its position being regulated automatically according to the rate of flow of the water; to improve the regulation the chamber K is reduced' in section at the lowest point of the adjustable electrode. Alternatively, the distance between the electrodes may be regulated by a hand-wheel or by an electromagnet or an auxiliary motor controlled by hand or by an electric relay. The adjustable electrodes may be provided with air or oil brakes. One of the electrodes may be provided with vanes to cause rotation. When three-phase current is used, the electrode E may be connected to the neutral point.
Patent GB-500077-A (GB)
Title: A method of manufacturing a wall plug and a plug constructed by the application of the said method
IPC: F16B13/14
Filed: 1938-01-18
Abstract: 500,077. Wall-plugs. NOORDEN, J. W. VAN. Jan. 18, 1938, No. 1608. Convention date, June 8, 1937. Drawings to Specification. [Class 89 (i)] In a tubular wall-plug which is woven from one or more hemp or other fibrous threads and one or more compound threads each consisting of one or more fibrous threads twined with one or more' copper or other metal threads, the woven tube is immersed in an impregnating bath, for example bone glue, and then stretched on a draw-bench and dried in the stretched condition whereby the impregnating means -becomes hard, before the tube is cut into the desired lengths. After drying on the drawbench, the tube may be immersed for a short time in a bath of casein or rapidly drying resinous substance, and thereafter or at the same time, in a disinfecting bath, and then dried again and cut into lengths.
Patent GB-493735-A (GB)
Title: Improved method of and apparatus for producing carburetted air for internal combustion engines
IPC: F02M17/28
Filed: 1938-01-18
Abstract: 493,735. Surface carburetters. STOKISS, L. E. Jan. 18, 1938, No. 1615. Convention date, Jan. 18, 1937. [Class 7 (iii)] Mixture is formed by drawing air through a casing a over the upper ends of wicks c dipping into a fuel reservoir d. Further air is drawn from a space i open to the atmosphere through perforated tubes h and emerges through the surfaces of the wicks where it is mixed with air drawn from the upper part of the reservoir d through holes in tubes b surrounding the wicks. The air inlet to the casing a may be controlled by an unbalanced valve g, the outlets from several casings being controlled by a common valve. In Fig. 4, the wicks are disposed in several rows in the casing a and the air is passed in succession over the wicks which are surrounded by tubes p located inside perforated partitions o. The air admitted into the tubes h may be heated.
Patent GB-218585-A (GB)
Title: Cloak-room ticket
IPC: A45C11/18
Filed: 1924-01-21
Abstract: 218,585. Krawczyk, L. Jan. 21, 1924. Fraud, detecting and preventing.-Cloak-room tickets 10 are each provided with a projection 12 of irregular shape adapted to register with an aperture 5 of corresponding shape in a casing 2 so that only a particular ticket can be inserted in each casing. This prevents thefts of coats &c. by presenting forged tickets.
Patent GB-739246-A (GB)
Title: Improvements in coffee grinders
IPC: A47J42/26
Filed: 1954-01-20
Abstract: 739,246. Coffee grinders. BOSCH GES., R. Jan. 20, 1954 [Feb. 21, 1953], No. 1663/54. Class 59. In a coffee grinder which forms an attachment device for a kitchen appliance and has a comminuting tool 5 rotatable in a container 7 for the material to be ground, the container being secured removably at its open end to a member 3 forming a base for the container and through which the driving-shaft 4 for the tool extends, the container is closed at its upper end and is shaped internally to taper progressively towards its upper end. The inner wall of the container has several baffle ribs 9. Ribs 10 are provided externally of the container and form a common end surface 11 so that the container may be unscrewed from the base 3 and stood in an inverted position to receive coffee beans. The tool 5 consists of three double-beaded knives 12, 13, 14. In a modification, Fig. 4 (not shown), the container has a removable top part provided with a flat external surface on which the container may be stood upright. The container is of transparent material and has graduations which are marked to indicate the time required for grinding a quantity corresponding to a specified number of cups of coffee. The container may be transparent only in the region of the graduations and associated marking. In another modification, Fig. 5 (not shown), the container is stepped externally, the steps forming the graduations. The container also has four external ribs perpendicular to each other and the end surfaces of which form a pedestal. The interior of the container may taper continuously or in steps towards its upper end, the steps forming graduations. The container may be provided with a pedestal surface merely by flattening its closed upper end externally.
Patent GB-822314-A (GB)
Title: Improvements in or relating to methods of reducing the metal-corrosive properties ofcombustion gases
IPC: C23F15/00
Filed: 1957-01-16
Abstract: 822,314. Preventing corrosion. CENTRAL ELECTRICITY GENERATING BOARD, and LEES, B. Dec. 16, 1957 [Dec. 16, 1957], No. 1682/57. Class 51 (1). The metal corrosive properties of combustion gases are reduced by introducing an aqueous solution of alkali salt into the gases after the combustion chamber or flame zone. An aqueous solution of the carbonate or hydroxide of sodium or potassium is injected as a mist or spray into the flue gases from fuel-fired boilers, furnaces or heat-exchangers to mix with the gases before they contact the metal surfaces of heat economizers or other heat-exchangers. The amount of alkali salt introduced may be up to 0.2% by weight of the fuel consumed.
Patent GB-241506-A (GB)
Title: Improvements in or relating to variable condensers for use in radio telegraphy
IPC: H01G5/06
Filed: 1925-01-20
Abstract: 241,506. Bradley, H. L. Oct. 17, 1924, [Convention date]. Void [Published under Sect. 91 of the Act]. Condensers.-A variable condenser with intermeshing rotor and stator plates 13. 29, Fig. 1, has the rotor plates supported by a single bearing and the sets of plates spaced apart by slotted axial and peripheral members respectively. The rotary shaft 15 is journaled in a sleeve bearing 5 secured to an end plate 1 and rotates by means of nut and lock-nut 11, 12 a cylindrical member 14 rotatable on the bearing 5. The rotor plates are set in grooves 14<a>, Fig. 9, in the member 14 which is protected throughout one-half of its area by means of a casing 16. The stator plates 29 are set in grooves between projections 26, Figs. 7 and 8, formed in strip members 23, the depressions in which are subsequently filled with solder &c. 28. The strips are tongued into. slots in the end plates 18, 19 to form a frame, which is closed on its curved side by a casing 20 having inturned ends 21. The plate 18 is mechanically secured to and electrically insulated from the end plate 1 by insulating members 31, 32. The plates 1, 18 are provided with terminals and the plate 1 is mounted on a panel by screws engaging a recessed portion 2 thereof. Axial adjustment of the member 14 is effected by the nut 11 against the action of a spring 9.
Patent GB-713478-A (GB)
Title: Improvements in or relating to devices for killing poultry
IPC: A22B3/08
Filed: 1952-01-23
Abstract: 713,478. Poultry-killing devices. SAVORY & MOORE, Ltd., DAY, F. B., and LOVE, D. S. Nov. 17, 1952 [Jan. 23, 1952 ; April 23, 1952], Nos. 1885/52 and 10211/52. Class 5 (1) Forceps for poultry killing consist of one limb 10 which is inserted in the bird's mouth and is provided with a pivoted blade 31 adapted to swing into position for piercing the brain, while the other limb 11 is clamped down on the bird's head. The latter limb is forked and the prongs 19 may have side-projections 20. A linkage between the handles of the forceps causes a blade 17 to slide forward in the limb 10 when the handles are closed to sever the carotid artery. The blade 31 is tilted upwardly by handle closure, a projection 36 on the sliding knife engaging a heel-piece 34 on the pivoted knife. Of the links 21. 23, the link 21 is pivoted in the handle 13 and carries a pin 26 working in a curved slot 27 in the link 23 which is pivoted at its two ends to the handle 15 and knife 17. Springs tend to open the handles and a spring 37 tends to keep the knife 31 in the horizontal position.
Patent GB-224766-A (GB)
Title: Improvements in machines for the production of plate springs
IPC: B21K7/00
Filed: 1924-01-24
Abstract: 224,766. Williamson, W. Jan. 24, 1924. Springs.-Plate springs for motor and other vehicles are made in a single machine which is provided on the ram and bed-plate with adjustable and removable shearing-tools for cutting to length, punching- tools, and tools for forming the ends of the back plates, and is also provided with removable cambering dies and a pair of rolls. The holders B<1> for the punches and end-forming tools are shown mounted on a slide b on the ram B and the holders A' for the dies thereof are mounted on a slide a' on the bed plate. A graduated scale M and pointers m are used in setting the tools in position. The end-forming tools consist of wedgeshaped pieces k<3> on the ram which engage spring-retracted slidable jaws K, K<1> on the holders on descent of the ram. The punches are removed and the plate is bowed and placed with its ends between the jaws and on descent of the ram mandrels L carried on spring- retracted brackets are pushed in between the jaws by the inclined ends of members L<2> depending from the ram, the jaws are closed and the ends of the plates are forced round the mandrels. A plate H adjustable on a transverse bar affixed to the bed plate serves as a stop for the end of the plate when it is required to punch a hole near one end. The movable cambering-die F is bolted to a bar f<1> secured by arms f to the ram and the fixed die F<1> is carried by centering clamps f<2> mounted on slides f<3>, to facilitate adjustment to suit the length of plate. The rolls G, G<1> are rotated by gearing g, g<1> from the crank shaft C<1>. The crank shaft is connected to tha driving shaft c by a clutch comprising a slotted member d, Fig. 8, which is mounted eccentrically in the member d<1> and is pressed by a spring into a recess d<3> in the part d<2> and which may be removed therefrom at the end of one revolution by engaging the end of a link h<1> which is normally in raised position. The link is lowered to start the machine by operation of the treadle E. During rolling operations the link may be retained in its lower position.
Patent GB-994968-A (GB)
Title: Improvements in or relating to pulse amplitude control circuits
Inventor: PAY DONALD ALEXANDER
IPC: H04N5/08
Filed: 1961-01-17
Abstract: 994,968. Television; limiting circuits; automatic volume control. MARCONI CO. Ltd. Nov. 1, 1961 [Jan. 17, 1961], No. 1955/61. Headings H3W, H4F and H4R. An amplifier, particularly for television signals consisting of synchronizing pulses and other waveforms, has gain control means responsive to pulses to the exclusion of other signals for controlling the effective gain of the amplifier in respect only of said pulses so that the amplifier has one value of gain for pulses in excess of a particular amplitude and another higher value for pulses below that amplitude. In Fig. 1, television signals are clamped at CL1, amplified by valve V1  and fed to a synchronizing pulse limiting circuit PC of the type described in Specification 994,967. The signals from the anode of V1 are again clamped by CL2 and passed via a cathode follower V3 to clipping diodes D1, D2, one or other of which is conductive in dependence on the relative magnitudes of synchronizing pulses at the cathode of V3 and V5. The clipped synchronizing pulses at point 2 are amplified by V4 and fed via cathode follower V5 to improve the clipping action. Diodes D3, D4 are arranged so that the pulse fed to the grid of valve V6 is equal in amplitude to the difference in amplitude between the synchronizing pulse fed to the grid of V3 and that derived from the cathode of V5. The difference pulse is amplified by valve V6, rectified by diodes D6, D7 and smoothed before being passed via a cathode follower V2 to the base of transistor T1. Automatic gain control.-The system is adjusted so that with input signals of normal amplitude the rectified voltage from diodes D6, D7 is sufficient to prevent diode D5 conducting. If the amplitude of input signals should become reduced, however, the difference pulse fed to valve V6 will be reduced, hence the grid of V2 will be less negative with the result that diode D5 will become conductive during the negative peaks of the synchronizing pulse, by-passing the cathode resistor R5 and hence reducing negative feedback so that the synchronizing pulse amplitude in the output waveform is unchanged. Modifications.-In Fig. 2, the difference pulse is obtained from the slider of a potentiometer RV1 connected across the clipping circuit. In Fig. 3 (not shown) a further potentiometer is provided to give separate adjustment of the bias of valve V2.