baber/WOPTO huggingface dataset:
Patent GB-251479-A (GB)
Title: Improvements in and relating to bracelets, bangles, and the like
IPC: A44C5/22
Filed: 1925-07-11
Abstract: 251,479. Bravingtons, Ltd., and Hunt, C. J. July 11, 1925. Bracelets, bangles, and the like bands.-An expansible bracelet or bangle comprises a resilient band divided at one point with a short curved or bent strip lying over or under the ends of the band on each side of the division, and slidably connected therewith, as by loops, suitable stop means being provided to prevent separation of the band and strip. In the form shown in Fig. 2, a strip d of half the thickness of the band a, and bent to correspond in shape with the polygonal shape of the band, is provided at each end with a loop e sliding upon the band and contacting in the limiting expanded position with guide loops f on the ends of the band. In the closed position the loops e bear against shoulders on the ends b, c of the band a, the bent shape of the strip d helping to maintain the band closed. A similar arrangement for a circular band is described. Fig. 5 shows a section in the expanded position of a further form, wherein a stop l is provided on the strip m to define the closed position of the band.
Patent GB-121985-A (GB)
Title: Improvements in or relating to Rotary Engines, Pumps, Blowers, Exhausters and the like.
IPC: F01C21/08
Filed: 1917-12-03
Abstract: 121,985. Fletcher, Russell, & Co., Singleton, J. H., and Young, C. Dec. 3, 1917. Fixed - abutment type. - In rotary engines, pumps, &c. of the kind having pairs of diametrically - opposite sliding spring - pressed vanes, guided rods n, secured to one vane of each pair, extend across the drum d and work freely in holes p in the complementary vane, and the springs r are mounted on the rods. The rods may pass through some of the material of the drum, or the slots in which the vanes work may extend completely across the drum, the sections of the drum then being connected by end disks. Reference has been directed by the Comptroller to Specifications 3175/73, 2280/81, 11474/07, and 21712,07. [Class 102, Pumps &c.].
Patent GB-267775-A (GB)
Title: Improvements in or relating to dredging apparatus
IPC: E02F3/08
Filed: 1926-07-17
Abstract: 267,775. Naamlooze Vennootschap Werf Conrad. June 30, 1926, [Convention date]. Endless-chain machines.-In a dredger in which the ladder is provided with floats at its lower end, two hoisting devices are provided, one acting while the floats are wholly or mainly submerged and the other acting independently or conjointly with the first device to hoist the ladder when the floats are wholly or mainly above the water level. As shown, the ladder has lateral floats 5 and lower floats 6, the floats 6 having passages 7 through which stones &c. pass. Lifting tackle 11 is used while the floats are submerged. After partly raising the ladder, eyes 8 on the latter are attached to the piston rods of hydraulic cylinders 10 which complete the lifting either alone or together with the tackle 11.
Patent GB-751821-A (GB)
Title: Improved collector box for dry suction appliances
IPC: E21B21/07
Filed: 1954-06-18
Abstract: 751,821. Suction cleaning apparatus. HEMSCHEIDT, H. [trading as HEMSCHEIDT MASCHINENFABRIK, H.]. June 18, 1954 [June 25, 1953], No. 18017/54. Classes 8(1) and 8(2). In suction apparatus for the removal of rock drill dust and the subsequent separation and collection thereof comprising a box 1 housing a suction device 3 e.g., a compressed air actuated injector surrounded by a filter unit 2, and a detachable lower vessel 4 housing a collecting bag 7, the latter is supported by a member 6 by which it is connected to a funnel-shaped guide wall 5 having tangential dust-laden air inlets 9, and an inner funnel-shaped baffle 10 open at its lower edge 11 to the bag 7 is set at an acute angle a to the guide 5 so as to deflect wet dust particles into the bag 7 and so protect the filter unit 2. The funnel 10 projects below the inlets 9, is covered at least on its operative face by corrosive resistant material and is replaceable by one of different inclination.
Patent GB-375994-A (GB)
Title: Improvements in and relating to sound emitting devices
IPC: H04R11/00
Filed: 1931-06-22
Abstract: 375,994. Sound magnifying and directing appliances. PINTSCH AKT.-GES., J., 71, Andreasstrasse, Berlin. June 22, 1931, No. 18041. Convention date, June 24, 1930. [Classes 13 and 118 (ii).] A sound emitter for use in air, emitting sound uniformly in all directions in a plane, comprises two electrically or otherwise operated units A, B having their diaphragms 1 excited at their natural frequency and arranged parallel and opposite to one another, the air space a between the units being pretuned to the natural frequency of the diaphragm vibrations. The distance between the units is made small relatively to the length of the waves emitted, and the diameter of the diaphragms is preferably at least half this wavelength. The shape of the air space a may deviate from that of a cylinder. Thus, Fig. 2, the diaphragms may be shaped so as to approach one another at the centre, or, Fig. 3, a member 3 may be disposed in the air space. Again, the air space may contain open-ended cones 4, Fig. 5, with or without funnels 6, which may alternatively be arranged as shown in Fig. 6. Fig. 7 shows the funnels 6 fed from a common source of sound. In another modification, each sound unit A, B has a common funnel fed from two diaphragms. A linear group of sound sources may be arranged to give a directional effect by spacing them apart at distances equal to half the wave-length of the sound emitted. Specification 180,357, [Class 118 (ii), Signals], is referred to.
Patent GB-490159-A (GB)
Title: Improvements in and relating to the manufacture of copper plated silver mirrors
IPC: C03C17/10
Filed: 1937-06-29
Abstract: Copper-plated silver mirrors are formed by precipitating copper in the cold on to a suitable support by reduction of a cuprotartaric complex with formaldehyde in the presence of silver. The silver may be present as a thin coating on the support or it may be added to the solution in the form of a salt in which case colloidal silver is precipitated on to the support by the action of the formaldehyde.  A sheet of glass may be washed with stannous chloride and distilled water and then coated with a thin film of silver by treatment with a solution of, for example, ammoniacal silver nitrate and invert sugar. It is then washed and covered with a solution containing copper sulphate, sodium potassium tartrate, caustic soda, and formaldehyde. The Specification as open to inspection under Sect. 91 describes the use of the cuproglyceric complex instead of the cuprotartaric complex, and also the addition to the solutions of traces of a colloid such as gum arabic or agar-agar.  A solution is described containing copper sulphate, glycerine, sodium hydroxide, gum arabic, and formaldehyde.  This subject-matter does not appear in the Specification as accepted.
Patent GB-899324-A (GB)
Title: A new or improved work supporting platform for use in conjunction with portable power tools
Inventor: LATHAM ERNEST HAROLD
IPC: B23B45/14
Filed: 1959-05-28
Abstract: 899,324. Machine-tool details. REVO ELECTRIC CO. Ltd. May 20, 1960 [May 20, 1959], No. 18181/59. Class 83 (3). [Also in Group XXIII] A work-supporting platform is adapted for use with portable power tools, particularly those in which a power-driven hand-tool forms the driving unit. The flat work-supporting platform or table 10, Fig. 1, is provided with an adjustable guide or fence 12 and a gap 13 through which a circular saw 14 may project. The table is provided on its underside with a pair of lugs 15, Figs. 1 and 3, which enable it to be clamped to the upper tubular member 17 of a bracket 11. A clamping bolt 16, passing through the lugs 15, secures the table to the member 16 either horizontally or in a tilted position. A scale 23 or an indicator 22 appears through a window 24 in the table and a datum 25 on the table facilitates its setting. Specification 899,325 is referred to.
Patent GB-765954-A (GB)
Title: Gating circuit
Inventor: SNIJDERS ANTONIE
IPC: H04L25/04
Filed: 1952-11-19
Abstract: 765,954. Diode gating circuits. STAATSBEDRIJF DER POSTERIJEN, TELEGRAFIE EN TELEFONIE. Nov. 19, 1952 [Nov. 24, 1951], No. 18197/54. Divided out of 765,953 [Group XL(b)] Class 40(6) - In a gating circuit comprising two sets of rectifiers in which the rectifiers of one set have similar branch connections to a source of one polarity and those of the other set are similarly connected to the opposite polarity and in which input and output terminals are formed at the junctions of corresponding branches of the two sets and biasing voltages are applied to respective third branches of the two sets, the gate is opened when the applied biasing voltages have the appropriate polarities applied to the other two branches of the set. As shown, the first set comprises rectifiers G1, G2, G3 connected at e to a resistor R1 and a positive source, whilst the second set comprises rectifiers G4, G5, G6 connected at a common point f to a resistor R2 and a source of negative potential, the input and output terminals a, b being at the junctions of the branches including rectifiers G2, G5 and G3, G6 respectively. In the closed condition of the gate with negative voltage at c and positive voltage at d, the voltage at e is the more negative of the voltages at the points a and c and is therefore negative, whilst the voltage at f is the more positive of the voltages at a, d and is always positive so that the voltage at b is unaffected by that at a. The gate is opened by positive voltage at c and negative voltage at d so that when the voltage at a is positive the voltage at e becomes positive and f remains positive so that the output terminal b becomes positive. If a negative voltage is applied at a, the point e remains negative and point f becomes a little more negative than e so that a negative voltage appears at the terminal b. The absolute values of the voltages at c, d are equal to or greater than those applied at the input terminal a. U.S.A, Specification 2,443,195 is referred to.
Patent GB-745678-A (GB)
Title: Process for the preparation of conversion products of high molecular weight carbonhydrates or their derivatives
IPC: C08B31/00
Filed: 1953-07-01
Abstract: Cellulose, or a mixture of cellulose, alkali and chloracetic acid, is heated as it travels along an oscillating helical conveyer, e.g. a coiled pipe, to yield a cellulose conversion product or cellulose ether.  Alkali cellulose in the presence of gaseous methyl chloride, ethyl chloride or ethylene oxide may be converted into cellulose ethers.ALSO:A mixture of starch and appropriate reagents is heated as it passes along an oscillating helical conveyer, e.g. a coiled pipe, to yield starch derivatives.  According to examples, starch mixed with alcoholic caustic soda and aqueous mono-chloracetic acid and dried, is heated at 130 DEG  C. to yield starch ethers.  Starch pretreated with aqueous hydrochloric acid and dried, is mixed with paraformadehyde and heated to 115 DEG  C.  Sodium alginate may be heated to 120 DEG  C. to yield a product having, in aqueous solution, a considerably lower viscosity.ALSO:Starch, pectin or a derivative thereof is heated as it travels along an oscillating helical conveyer, e.g. a coiled pipe, to yield a conversion product. According to examples, dried maize starch is heated at 150 DEG C. to yield British gum.  Starch, p  pretreated with hydrochloric or nitric acid and dried, is heated between 100 DEG C. and 250 DEG C. to yield dextrin.
Patent GB-1008984-A (GB)
Title: Improvements in or relating to washing devices
Inventor: MARKMAN SOLOMON
IPC: D06F21/02
Filed: 1963-05-09
Abstract: 1,008,984. Washing devices. S. MARKMAN Of London Ltd. April 30, 1964, [May 9, 1963], No. 18324/63. Heading D1A. A washing device comprises a generally spherical container 1 mounted so as to be movable to agitate the washing and having an opening closed by a cover 3 rotable by its handle 4 between open and closed position the junction being made airtight by a sealing ring. Container 1 comprises portions 1a, 1b connected together by a channel band 14 carrying stub axles 2 mounted in bearings in a metal or plastic stand 8, one axle 2 carrying a handle 6 by which container 1 is rotated. A pressure relief valve in cover 3 is operable from outside the container. The handle may alternatively rotate the container through gearing and the axis of rotation of the container may be movable. Otherwise an electric motor may be used. Several containers may be mounted on one stand and the stand may be mounted on wheels. The container may be securable in various positions. The cover or containers or both may be transparent and the container may have a stirrer or gas may be bubbled there through a water heater may be provided.
Patent GB-126338-A (GB)
Title: Improvements relating to Flash Signalling Apparatus.
Inventor: LUCAS OLIVER
IPC: G08B5/38
Filed: 1916-12-21
Abstract: 126,338. Lucas, O. Dec. 21, 1916 Supporting. - A l a m p for flash signalling is provided with a socket h into which may be screwed a handle, a spike for supporting the lamp in earth or on a sandbag, or an adapter for attaching the lamp to a helio - stand. The l a m p described forms part of a signalling set, the lamp, handle, spike, and adapter being carried in one compartment of a portable case.
Patent GB-861874-A (GB)
Title: Deferred-action electric battery activatable by immersion in liquid
IPC: H01M6/34
Filed: 1958-06-09
Abstract: 861,874. Batteries. COMPAGNIE INDUSTRIELLE DES PILES ELECTRIQUES C.I.P.E.L. June 9, 1958 [June 7, 1957], No. 18360/58. Class 53. A battery activated by immersion in water is enclosed in a rubber hood 15 the lower open end 16 of which extends a short distance beyond the lower end of the battery. The upper closed end of the hood forms a loose pocket 15<SP>1</SP> which is folded flat and retained in position by an adhesive paper strip 17. The battery is activated by immersion in sea water or in a tank containing a solution of sodium and magnesium chlorides. The air in the spaces within the battery and hood causes the battery to float with the strip 17 in the water which softens the strip and releases the folded end 15<SP>1</SP> of the hood. The air in the hood, including the air below the battery, is forced upwardly by hydrostatic pressure and expands the end 15<SP>1</SP> of the hood as shown in Fig. 4. The battery now begins to operate, and the gases evolved rise into the top of the hood and depress the liquid till the cells are surrounded entirely by a gaseous medium. A number of batteries each in its own hood may be enclosed in a perforated casing. Fig. 8 shows an apparatus comprising a number of batteries and their hoods enclosed in a chamber 30, the folded ends of the hoods being crushed against the partition 32. Apparatus 37 to be powered by the batteries is supported in an opening in the lower end of the container 31 by a catch 39 which is released on impact with the water causing the apparatus to be ejected by a spring 38. A cable 36 attached to the apparatus and to the batteries in the chamber 30 uncoils as the apparatus sinks and pulls the batteries downwards, causing expansion of the hoods. The hoods may expand under hydrostatic pressure as in Fig. 1, or they may be attached to the partition 32 so that they are expanded as the chamber 30 is lowered. Each cell of the batteries consists of a copper plate covered with cuprous chloride, and a magnesium plate separated from the copper plate by cellulose sheets 4, Fig. 1. The cells are joined in series by conductive plastic strips, and the end cells are connected to leads 11, 12. The cells are coated with pitch 13 in which there is a groove 14 in which the lead 12 is housed and which forms an inlet for the water and outlet for air and gases evolved by the battery.
Patent GB-1414843-A (GB)
Title: Electron collimator
IPC: A61B6/06
Filed: 1973-04-17
Abstract: 1414843 Irradiation apparatus MEL EQUIPMENT CO Ltd 16 April 1974 [17 April 1973] 18438/73 Heading H5R A device for defining the cross-section of an electron stream comprises a plurality of rigid wall members A, B, C, D each comprising two laminar portions meeting at a corner and the wall members interfitting to form a polygonal tubular structure the cross-section of which can be varied by sliding the wall members to vary the degree to which the laminar portions overlap. The sliding of the wall members can be interconnected through gearing, Fig. 4 (not shown). Beam distribution connectors can be fitted within the devices.
Patent GB-1336759-A (GB)
Title: Quantitative method of recovering gold from aqueous solutions
IPC: C22B3/36
Filed: 1971-06-01
Abstract: 1336759 Recovery of gold values W C HERAEUS GmbH 1 June 1971 [25 June 1970] 18451/71 Heading C1A Gold values are separated from aqueous mineral acid solutions especially those containing very low concentrations of gold, by mixing the solutions with tetrahydrofuran and extracting the so-formed Au-THF complex with a halohydrocarbon solvent e.g. methylene chloride or bromide. In addition to Au the solution may also contain one or more of Fe, Co, Ni, Cu, Al, Cr and the platinum metals.
Patent GB-1214692-A (GB)
Title: Semi-conductor device
Inventor: SVENSSON ROBERT
IPC: H01L21/60
Filed: 1968-04-19
Abstract: 1,214,692. Welding by pressure; making bimetallic bolts and semi-conductor devices. ALLMANNA SVENSKA ELEKTRISKA A.B. 19 April, 1968 [20 April, 1967], No. 18621/68. Headings B3A and B3R. [Also in Division H1] In the manufacture of a bimetallic bolt which is to connect a semi-conductor disc supported on the head of the bolt to a heat sink, a block 21 of copper or copper alloy is placed on a block 20 of aluminium or aluminium alloy in a die 19 and pressed by a cold punch 18 at a pressure of 10 tons/cm<SP>2</SP> when the copper or copper alloy is forced into the die and the aluminium or aluminium alloy is spread around it in a layer cold welded to it. After the pressing operation the bolt is provided with threads. The copper alloys may be zirconium-copper, chromium-copper, chromium-zirconium-copper or silver-copper, and the aluminium alloys may be silumin, silumin gamma or Duralumin (Registered Trade Mark).
Patent GB-141398-A (GB)
Title: Improvements in or relating to sweeping and refuse-collecting machines
IPC: E01H1/04
Filed: 1918-11-14
Abstract: 141,398. Hollick, W. J. Nov. 14, 1918. Sweeping-machines; taking up refuse for removal.-Relates to machines for use on. roads or the floors of buildings, and of the kind in which the refuse is swept by a rotary brush into the pivoted buckets of an endless-band elevator which discharges into a cart or other receptacle. According to the invention, the brush presents a flattened V or concave face to the elevator, the buckets of which pivot or fold towards the endless band when passing from the downward to the upward run. Fig. 2 shows a vehicle frame a fitted with brackets b which pivotally carry an elevator d comprising an endless band d<6> having shallow trays e pivoted thereto at e<1>. Refuse is swept into the trays by a rotary brush k and is conveyed upwardly by the trays, which lie against the upper part of the band, but swing open to discharge the refuse as they turn round the upper end of the elevator. The trays carry arms e<5> which engage with fixed surfaces d<7>, d<8> to raise the trays as they pass near to the ground and the brush. The outward movement of the trays is limited by pins e<4> on the band engaging grooves e<3> in the trays. The brush k is carried on a pivoted frame m and may be in two intermeshing sections k<1>, k<2>, Fig. 7, independently driven or connected by a universal joint q'. To facilitate intermeshing, the adjacent ends of the brushes may be provided with tooth-like projections k<3>, Fig. 9, carrying tufts of bristles. The road wheels drive the brush k through a countershaft n, and the lower sprocket of the elevator through a chain f. A gutter brush r, mounted un a countershaft t by a pivoted frame s, is driven from the countershaft n by bevel-gearing u, v. The brushes and elevator may be simultaneously raised out of action by cables 3, 4, 8 passing over a shaft 5 rotated by a handle 6.
Patent GB-530536-A (GB)
Title: Improvements in grass and like driers
IPC: F26B17/08
Filed: 1939-06-27
Abstract: 530,536. Drying grass &c. PRATCHITT BROS. Ltd., and PRATCHITT, W. M. June 27, 1939, No. 18644. [Class 34 (ii)] [Also in Group I] Grass &c. is dried in two stages by passing hot gases through the moist grass in a first stage and thereafter passing a separate current of warm gases through the partly dried grass in a succeeding stage, temperatures of 500‹F, and 220‹-250‹F., being specified respectively. The grass is fed on to a horizontal part a of an otherwise inclined conveyer and is kept in position on the elevating part of the conveyer by another endless conveyer b spaced therefrom, the hot gases being delivered beneath the conveyer a by a duct c. The grass then falls from the top of the elevating conveyer on to the uppermost of a series of offset horizontal conveyers e .. k in a drying chamber d and is turned over as it falls from one conveyer to the next beneath, the warm gases being blown continuously into the bottom of the chamber from a duct d<1>. The conveyers of both stages are constructed of wire mesh, perforated metal &c. The duct c communicates with a fan r, air mixing chamber q, Fig. 3, to a combustion chamber o, and the duct d' with a separate system of fan s, air mixing chamber p and combustion chamber n.
Patent GB-792873-A (GB)
Title: Process for the circular knitting of stockings, and stockings produced thereby
IPC: A41B11/00
Filed: 1955-06-28
Abstract: 792,873. Knitting. LAUFER, H. June 28, 1955 [Feb. 21, 1955], No. 18693/55. Class 74 (2). A stocking is knitted on a two feeder double cylinder machine having a pattern drum at each feeder for effecting patterning, the welt 1 being knitted as a 1 x 1 rib fabric, the leg 2a being knitted in purl stitch and shaped by floating a loop control, and the high spliced heel 6 and foot sole 7 being knitted in purl stitch. The welt 1 is reinforced by knitting two yarns in each course, and a part 2 is knitted between the welt 1 and the leg proper 2a and comprises alternate courses knitted of a single yarn and intervening courses knitted of two yarns. This part 2 is knitted in purl stitch. In addition to shaping the leg 2a, false fashion marks 5 are inserted in the leg by floating, and a false seam 3 running from the welt to the heel is produced by knitting two wales at the back of the leg in plain stitch and this may be further enhanced by floating some of the course yarns in these wales.
Patent GB-1489371-A (GB)
Title: Desulphurisation of molten metals
IPC: C21C7/064
Filed: 1974-04-30
Abstract: 1489371 Desulphurizing of molten metal FOSECO INTERNATIONAL Ltd 25 April 1975 [30 April 1974] 18891/74 Heading C7D An apparatus for use in desulphurizing molten metals such as iron, steel, nickel or ferro alloys consists of a basic refractory lined vessel 1 divided into two chambers 3, 4 by a vertical wall 2. The first chamber 3 has a source of molten metal supply 7 above it and a top hole 6 in the base. Both chambers are covered by a hood 5 to remove gases. The dividing wall 2 may have apertures at the bottom and optionally at the top. The method of use of the apparatus in desulphurization of molten metal is by providing a desulphurizing slag in chamber 3, into which the molten metal is poured, to be collected at the base of the vessel, where it may be removed through tap hole 6. The spent slag is thus passed into chamber 4 via the apertures in the wall 2, where it is oxidized by an oxidizing agent, for example, by blowing with gaseous oxygen 8 the SO 2  gases formed passing out of the system by way of hood 5, and the oxidized slag is returned to chamber 3 for further use. The apparatus may be tilted as shown in Fig. 2 to permit the slag movement from chamber to chamber by gravity. When steels are desulphurized, at working temperatures of 14-1500‹C, the slag used may contain lime (CaO) or other alkaline earth metal oxide or alkaline metal oxide, and alumina and/or ore or more fluorides.