baber/WOPTO huggingface dataset:
Patent GB-655945-A (GB)
Title: Process and apparatus for separating solid materials of different specific gravity and different grain size into fractions
IPC: B04C5/185
Filed: 1947-08-30
Abstract: 655,945. Washing granular materials; centrifugal separators. DIRECTIE VAN DE STAATSMIJNEN IN LIMBURG. Aug. 30, 1947, No. 24062. Convention date, Aug. 7, 1945. [Classes 23 and 82(ii)] A process for separating solid materials of different specific gravities and different grain sizes in a cyclone using a suspension containing relatively fine material, of higher specific gravity than the specific gravity of separation, is characterized by delivering the apex discharge into a bath containing a body of liquid so that the vortices created in the cyclone extend through the apex opening into the body of liquid and the coarser particles of the mixture to be separated centrifuge outwards and are removed whilst the relatively fine particles are drawn back into the cyclone solely by the ascending central vortex. The mixture to be separated together with the suspension of relatively fine particles is fed through a tangential pipe 5 to an opening 6 in a conical cyclone 1. The lighter fraction of the mixture together with some of the finest of the suspension particles leave by an opening 4 in the top wall 3, while the heavier fraction together with the majority of the larger suspension particles pass through an opening 8 into a generally conical tank 9 filled with a suspension of relatively fine-particles, kept stable by an agitating blade 21. The material entering the tank is rotating rapidly due to the vortical action in the cyclone so the heavier fraction particles centrifuge outwards while the relatively fine particles are returned to the cyclone by the ascending central vortex. The heavier fraction particles pass to the bottom of the tank where they are carried, by buckets 17, to a discharge opening 18. The level of the suspension liquid in the housing 13 is adjusted by a weir 20. More than one cyclone may be fitted to each tank. Specifications 601,063 and 639,229, are referred to.
Patent GB-649484-A (GB)
Title: Improvements in and relating to textile drawing, twisting, doubling and spinning machinery
IPC: D01H7/92
Filed: 1948-09-14
Abstract: 649,484. Twist tubes for textile spinning &c. machines. COURTAULDS, Ltd., HARDACRE, W., BEAUMONT, E., and MERRIMAN, H. B. Sept. 14, 1948, No. 24095. [Class 120(ii)] A textile twisting tube comprises a rotatable member formed by two or more components grooved or channelled so that the member has a continuous, smooth, wholly internal channel having entrance and exit holes concentric with the axis of the member and so shaped that a thread passing through will be deflected from the axis solely by the walls of the channel. In one embodiment, roving 16 passes from the drawing rollers 17, 18 of a spinning frame, through a twisting tube 1 driven by a tape 10, to a spindle 21. A fixed guide 19 may be interposed between the twisting tube 1 and the spindle 21. The channel of the tube is formed by oblique passages 4, 5 at an angle of 15 degrees to the vertical and joined by a straight passage 6. Preferably, the tube is formed by die-casting two grooved parts which are mirror images of each other and are joined together by shrinking an outer collar 9 shaped as a wharl on to the two parts. Alternatively, two identical parts, as illustrated in Fig. 5, having two curved grooves 75, 76 may be used. In another form, the tube may be built up from five superposed portions having respectively straight, oblique, straight, oblique and straight passages, Another twisting tube comprises a hollow wharl having an axial passage at its upper end and a chamber opening out on to its lower side and plugged with a close-fitting porcelain cylinder having a curved channel passing through it. The wharl may be braked by a cam surface capable of bearing upon a flange of the wharl. Specifications 24136/02, [Class 120], 4579/12, 10327/13, [both in Class 120(ii)], and 591,919 are referred to.
Patent GB-287402-A (GB)
Title: Method of producing galvanic coatings of varying thicknesses
IPC: C25D5/16
Filed: 1927-09-14
Abstract: 287,402. Mond, A. L., (Berndorfer Metallwarenfabrik A. Krupp Akt.-Ges.). Sept. 14, 1927. Metals, depositing; electrolytcs, circulating; electrodes, supporting.-An article is coated with a metal layer varying in thickness from point to point in a desired manner by applying the electrolyte to the unsubmerged surface in the form of a jet, the thickness at any point being controlled by the strength, speed and size of the jet and the duration of its impingement. The article is connected as cathode and the anode is arranged within or constituted by the jet tube. A soluble anode may be employed or the electrolyte may be charged with the coating material on its passage to the jet.
Patent GB-600046-A (GB)
Title: Improvements in or relating to the shaping of sheet material
IPC: B31B50/59
Filed: 1945-09-19
Abstract: 600,046. Stamping. BRITISH CELANESE, Ltd. Sept. 19, 1945, No. 24246. Convention date, Sept. 20, 1944. [Class 83 (iv)] [Also in Groups V and XVI] In a stamping-press the former 43 is operated by a cam 13 which has a dwell arranged to bring the former substantially to rest at the moment when it comes in contact with the sheet material being shaped. Preferably, the cam gives the former first a uniform acceleration and then a uniform deceleration as it approaches the sheet ; after the former is brought to rest in contact with the sheet it is advanced to shape the article, arrested again, and then advanced slightly to cut off the shaped article. A strip 33 of sheet stock is drawn intermittently, by means of the rollers 93, 95, through the heater 9 and across the lower die 22. At each pause, the plate 35 descends to hold the strip down and the former 43 then descends to punch out an article 34, pauses, and then descends further so that the article is cut off by the shoulder 46. A knock-out pin 71 then detaches the article from the former. The members 93, 95, 35, 43 and 69 are all operated by cams on the shaft 16 which is driven by the chain 128. The roller 93, which drives the roller 95 through gears, is driven intermittently, by means of a free-wheel, through linkage, by the cam 15, the free-wheel being moved in the' idling direction by the spring 117. The linkage is adjustable so that the movement of the sheet 33 for each revolution of the shaft 16 may be varied, The rollers may be turned manually by the wheel 125 and may be separated (against the pressure of the spring device 102) to thread in or release the strip, by the lever 126. The hold-down plate 35 is depressed by the cam 12 acting through the follower roller 64 and lever 65 on the adjustable rods 58, and raised by the springs 63<SP>1</SP>. The hold-down plate may also be operated manually by means of the handle 67. The former 43 is lowered by the cam 13, acting through the follower roller 53, and raised. by the springs 54. The position of the former 43 may be adjusted by means of the nut 51. The knock-out pin 71 is lowered, through levers, by the cam 14 and returned by the spring 74. The lower die 22 is heated by fluid circulating in the conduit 31, and the formed articles pass through a cooling box 26 which is cooled by fluid circulating in the conduit 32. The press described is for shaping articles from a sheet of plastic material having a basic of a thermoplastic material such as a cellulose derivative or a synthetic resin, but the invention may also be applied to presses for working sheet metal. Specification 509,785, [Group XVI], is referred to.
Patent GB-745694-A (GB)
Title: Improvements in gates and doors
IPC: E06B11/04
Filed: 1953-11-02
Abstract: 745,694. Rectilinear-motion bearings. CRAIG W. Y. Feb. 2,1955 [Nov. 2, 1953], No. 24262/53. Class 12 (1). [Also in Group I] A sliding gate or door structure comprises a gate or door proper 8, 9, 13, 14 which is slidably mounted in guides 6 carried by uprights 7, 15 and is adapted to be secured to a post 11 by hooks 10. The post 11 is slotted to receive the hooks and carries split sleeves 17 which are vertically adjustable by means of clamping screws, see also Fig. 5 (not shown). The horizontal bars may be formed with continuous longitudinal ribs which project into the guides 6 and three or more sliding bars and guides may be provided. The members 8 need not form part of the gate proper, in which case the gate is provided with projections which are secured to or formed integral with the lugs 12 carried by the member 8.
Patent GB-240834-A (GB)
Title: Process for the production of alumina
IPC: C01F7/22
Filed: 1925-09-29
Abstract: In the process of the parent Specification wherein clay or other aluminous material is treated with hydrochloric acid and the solution is evaporated to obtain aluminium chloride crystals which are washed with hydrochloric acid to obtain pure aluminium chloride, the mother-liquor and washings being enriched with hydrochloric acid and used again until they become too rich in iron chloride, these ferruginous liquors are according to the present invention diluted and brought into reaction with aluminous material such as burnt clay to remove most of the iron and enrich the liquors in aluminium chloride.  The liquors can then be evaporated as in the process of the parent case and the clay is washed with water to remove the iron hydrate, after which the clay may be used with other raw material in the process.
Patent GB-203519-A (GB)
Title: Process of manufacture of white oxide of antimony
IPC: C01G30/00
Filed: 1922-09-08
Abstract: 203,519. Germot, A. Sept. 8, 1922. Antimony oxide.-An timony oxide is prepared by blowing air into a bath of molten antimony and then stopping the heating, the bath being kept liquid by the heat of the reaction. The process mav be effected in an electric furnace f having resistances r and a wide outlet c for the fume. The outlet pipe is extended to form a bell b dipping into the bath so as to shut off a space d while the part e of the furnace is open to the air so as to allow of feeding in more antimony. Air is blown in by a pipe t. It is stated that other means of heating may be employed, for instance gas or liquid fuel inside the furnace.
Patent GB-462036-A (GB)
Title: Improved wire drawing dies and a method of manufacturing the same
IPC: B21C3/18
Filed: 1935-09-02
Abstract: Wire-drawing dies are made from one or more of the following pulverized materials, viz.: china, porcelain, faience or other ceramic masses, hard glass, corundum, silicon carbide, quartz or "Alundum" (Registered Trade Mark) to which diamond dust or one or more carbides of the difficultly meltable metals may be added; the components may be bound together by means of resins, preferably artificial resins.  Specification 4887/12, [Class 70], is referred to.
Patent GB-834433-A (GB)
Title: Sealing closure end stop and seal
IPC: A44B19/36
Filed: 1956-08-10
Abstract: 834,433. Sliding clasp fasteners. GOODRICH CO., B. F. Aug. 10, 1956 [Aug. 22. 1955], No. 24538/56. Class 44 An end stop seal 48, for a sealing closure as described in Specification 834,430, comprises a U-shaped flexible sealing body 49 embracing one end 18 of the closure, and integral with the ends of sealing elements 22, 23, which extend along and are bonded to the upper faces of the teeth 29 of a sliding clasp fastener; the sealing body having a plurality of sealing ribs 53, 54 projecting from its upper surface and which press outwardly against an inner seating surface of the fastener slider 56 when in the closed position of the sealing closure. The legs 50, 51 of the U-shaped body are embraced, in the closed position of the closure, by the upper plate flanges of the slider 56, and are thereby urged towards each other so that the broad ends 60, 61 and 64, 65 of the ribs 53, 54 respectively abut each other. A plate 68, Fig. 9, is bonded to the underside of the U-shaped body 49 and to the adjacent parts of the fabric stringers 24, 25; and prongs 72, 73 mesh between the end teeth of the fastener to ensure correct alignment.
Patent GB-1075715-A (GB)
Title: Power operated platform
Inventor: JAY RICHARD STANLEY
IPC: B66F7/06
Filed: 1965-06-10
Abstract: 1,075,715. Platform elevators. JARKE CORPORATION. June 10, 1965, No. 24615/65. Heading B8H. The platform 14 of a platform elevator is maintained parallel to the wheeled base 12 by two pairs of X-links 16 and is raised and lowered by a screw and nut mechanism 18. The mechanism 18 comprises a pair of ball screws 50 each pivotally connected at its upper end to a pin 52 supported by channel members secured to the platform. Each screw 50 engages a ball nut (60), Fig. 5 (not shown), secured to a torque tube (56) mounted for rotation in bearings (58) by means of an electric motor 62. The mechanism 18 forms a unitary assembly which is pivoted to the base 12 at 82.
Patent GB-849444-A (GB)
Title: Improvements relating to the measurement of time intervals
Inventor: SCOLES GRAHAM JOHN
IPC: G04F13/02
Filed: 1956-08-13
Abstract: 849,444. Cathode-ray oscilloscopes. METROPOLITAN-VICKERS ELECTRICAL CO. Ltd. Aug. 29, 1957 [Aug. 13, 1956], No. 24706/56. Class 40(7). For measuring the time duration of recurrent waveforms a time calibrator comprises a plurality of delay lines in cascade each line having an associated pulse generator for feeding input pulses into the line and tapping points spaced at predetermined intervals therealong with a switch for selecting a tapping point to derive an output pulse which triggers the pulse generator for the succeeding line, Figs. I and 2 (neither shown), the pulse generator of the first line is triggered at the repetition rate of the waveform being measured and the output of the time calibrator is displayed simultaneously with the waveform. The delay lines may have unused sections at their beginnings and ends. In the embodiment an input J of the same recurrence rate as the examined waveform produces sawtooth K applied to strobing circuits 21, 22 each adjustable to produce output pulses L, M respectively. Pulses L are applied to time calibrator 23 and pulses M to trigger cathode-ray tube time base 24.
Patent GB-1536097-A (GB)
Title: Granular gypsum and process for production of same
IPC: C04B14/36
Filed: 1977-06-14
Abstract: 1536097 Granular fibrous gypsum IDEMITSU KOSAN CO Ltd 14 June 1977 [29 Nov 1976] 24724/77 Heading C1A . Granular gypsum formed of fibrous α-type hemihydrate or anhydrite gypsum, having bulk density 0À01-0À8 g./cm.<SP>3</SP>, is obtained by subjecting #-type hemihydrate gypsum or dihydrate gypsum or a mixture thereof to hydrothermal reaction in acid medium to form a fibrous gypsum while agitating until the fibres intertwine to form granules. Drying at 50-80‹ C. for 1-3 hours gives α-hemihydrate product; calcining at 400-1000‹ C. for 0À5-3 hours gives anhydrite product.
Patent GB-1307670-A (GB)
Title: Shaving head for a dry-shaving apparatus
IPC: B26B19/14
Filed: 1971-04-19
Abstract: 1307670 Dry shavers PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 19 April 1971 [25 March 1970] 24846/71 Heading B4B A dry shaver head 1 comprises a shear plate 3 and a co-operating rotary cutter member 2 having at least one blade 9 resiliently mounted in a carrier 4, and biased by a spring 12, the centre of gravity 15 of the blade 9 being so arranged that when the blade 9 deviates in use from initial contact with the shear plate 3 the centrifugal and centripetal forces acting on the blade 9 provide a couple which tends to restore engagement with the shear plate 3. The or each blade 9 lies in a respective opening 8 of the carrier 4, and a curved edge 13 operatively engages the radially outer end of the opening 8 under centrifugal force. The centre of curvature 14 of the edge 13, centre of gravity 15 and point of contact 16 of the edge 13 with the opening 8 lie in a common straight line when the razor is not in use.
Patent GB-712054-A (GB)
Title: Improvements relating to press guards for mechanical power presses
Inventor: BAGG ALBERT EDWARD
IPC: F16P3/04
Filed: 1951-10-25
Abstract: 712,054. Machinery guards. INDUSTRIAL GUARDING EQUIPMENT, Ltd. Oct. 27, 1952 [Oct. 25, 1951], No. 24912/51. Addition to 697,284. Class 80 (4). Guard operating mechanism for a power press according to the parent Specification and having a fluid-pressure system for operating both the guard and the clutch key extractor mechanism is modified by having an additional valve in the fluid-pressure circuit to the key extractor mechanism which is opened to supply fluid-pressure thereto only when the guard is fully closed. As shown a valve 40 is arranged on the fixed side frame 5 of the guard and controls the supply of pressure fluid from an inlet 44 to an outlet 45 leading to the control valve. of the key extractor actuating mechanism. A stem 41 of valve 40 is adapted to be engaged by a projection 42 of the lower sliding guard section 4 when the guard is in the fully closed position.
Patent GB-1285307-A (GB)
Title: Two terminal network with negative impedance
Inventor: MAREK ALOIS
IPC: H04B3/18
Filed: 1971-04-19
Abstract: 1285307 D.C.-D.C. converters BROWN BOVERI & Co Ltd 19 April 1971 [23 March 1970] 24927/71 Heading H2F [Also in Division H3] In a D.C. to D.C. converter a negative impedance is produced across terminals 17, 18 which are connected respectively to the collector and base of a transistor 8. In series with the emitter circuit of transistor 8 is the sourcedrain path of a field-effect transistor 12 of opposite conductivity type, the gate of which is connected to terminal 17. Battery 27 applies a D.C. voltage between the base of transistor 8 and drain of field-effect transistor 12. Pulses are generated by means of an inductor 26 connected across terminals 17, 18 and are rectified by means of Zener diode 28 and smoothing capacitor 29; the Zener diode also limits the amplitude of oscillation.
Patent GB-1219467-A (GB)
Title: Process for bleaching unbleached textile articles comprising cellulose
IPC: D06L4/70
Filed: 1968-05-24
Abstract: 1,219,467. Bleaching cellulosic textile materials. ENTREPRISE MINIERE ET CHIMIQUE. 24 May, 1968 [24 May, 1967], No. 25080/68. Heading DIP. Unbleached textile materials comprising cellulose are bleached by contacting them in the following order with (1) amylase, (2) a compound containing one or more nitrogenchlorine linkages and (3) a bleach comprising hydrogen peroxide or an alkali metal chloride or hypochlorite. The cellulose may be in the form of threads, tows or woven fabric comprising cotton alone or in admixture with linen, polyester or polyamide fibres. The textile material may be passed through an aqueous solution containing 2-10 grams per litre of amy- Jase, sodium chloride and 1-2 grams per litre of a wetting agent, e.g. the octylester of sulphosucoinic acid, for 5-30 seconds at 20-80‹C, squeezed to 50-120% wet take-up, washed with boiling water, squeezed to 50-70% wet take-up, passed through an aqueous solution having a pH of 4-8 and containing an N-chlorinated organic compound, e.g. N- chlorotoluene sulphonamide, trichloroisocyanuric acid, optionally in admixture with sodium bicarbonate and cyanuric acid, or sodium dichloroisocyanurate, in a concentration giving an available chlorine content of 2-20 grams per litre, at a temperature of 10‹-60‹ for 5-30 seconds, washed with hot water and squeezed. The textile material may then be passed through a solution of hydrogen peroxide stabilized with sodium silicate squeezed to a 60-100% wet take-up, kept for ¢-10 minutes in a J-Box or steamer at 100‹C or for ¢-1 minute in a steamer under pressure at 130‹-140‹, washed at 100‹C in a solution containing 5-10 grams per litre of sodium hydroxide, washed and dried. Alternatively the textile material may be treated with an alkali metal hypochlerite or treated with a bath containing 10-30 grams per litre of an alkali metal chlorite and sodium phosphate squeezed to 8-100% wet take-up and kept at 100‹C for 5-15 minutes before being washed and dried.
Patent GB-518547-A (GB)
Title: Improvements in or relating to pawl and ratchet mechanism
IPC: E21C29/10
Filed: 1938-08-26
Abstract: 518,547. Coal-cutting machines. BRITISH JEFFREY-DIAMOND, Ltd., and SAVILLE, A. Y. Aug. 26, 1938, No. 25137. [Class 68 (i)] [Also in Group XXIV] In pawl-and-ratchet mechanism adapted for incorporation in the haulage end of a coal-cutting machine, a roller is associated with the pawl to which a fixed stroke is imparted and an adjustable cam plate is provided to be set to co-operate with the roller on the back stroke of the pawl to lift the latter, out of engagement with the teeth. A pawl 10 is pivoted at 11 between a pair of plates 12 journalled on the shaft of the ratchet wheel 13, the plates being oscillated by an eccentric 15 through a connecting-rod 14. On the pawl 10, adjacent the operative end, is mounted a pin 16 carrying a hardened steel roller 17. The pawl is normally urged into engagement with the teeth by a spring 18, but means are provided to mask part of the stroke of the pawl. This comprises an annular cam plate 19 having a bayonet-type connection with a boss 20 on the machine frame and so disposed that the roller 17, will contact therewith on the back-stroke and lift the pawl from the teeth. The cam plate is adjusted by a toothed sector 21 thereon being engaged by a rack 22 which is connected to a threaded member 23 actuated by a coarsepitched thread-24 on a rod 25 actuated by a handwheel 28.
Patent GB-237768-A (GB)
Title: Means and method for use in separating oil and water
IPC: B01D17/02
Filed: 1924-10-22
Abstract: 237,768. Gibb, M. S. Oct. 22, 1924. Separating by gravity. -Water is separated from fuel oil in a cylindrical tower-like chamber A fitted with a steam coil B, heated oil being discharged through an outlet E near the top and water drawn off through a release valve F near the bottom. The inlet D for the mixture is preferably situated near the bottom. The valve F is preferably spring - closed and opened manually at intervals. The chamber may be lagged.
Patent GB-204515-A (GB)
Title: A spring suspension for vehicles
IPC: B60G11/08
Filed: 1922-09-18
Abstract: 204,515. Hawkins, R. C., and Hixson, E. S. Sept. 18, 1922. Springs, arrangement of.-In a spring suspension for a vehicle, the ends of the spring 5 are suspended from the underside of the axle 6. the medial portion of which is offset longitudinally of the vehicle by a. simple bending operation to permit the central portion of the spring to be pivoted as at 4 to the vehicle frame 1.
Patent GB-1196385-A (GB)
Title: Wire-Wound Power Resistor
IPC: H01C3/00
Filed: 1968-05-28
Abstract: 1,196,385. Resistors. DEUTSCHE VITROHM G.m.b.H. & CO., K.G. 28 May, 1968 [22 Sept., 1967], No. 25440/68. Heading H1S A wire wound resistor 4 is insulated by comminuted dry inorganic solid insulating material 6 mixed with small grains, at least the surface layers of which consist of a metal which, according to its position in the electrochemical series, is less noble than the material of the resistance element. The small grains may be of magnesium, cadmium or zinc or of another material (e.g. iron) coated with one of these metals. The resistor element may be of nickel alloy wire wound on a glass cord and may be sealed by silicone resin 7. The comminuted insulating material may be quartz sand or aluminium oxide of average grain size 5-500 microns with the admixed small grains being of 2-50 microns. The ceramic casing may be provided with mounting slots (11, Fig. 2, not shown) and may have an extra bore to accommodate a return conductor (1).