baber/WOPTO huggingface dataset:
Patent GB-1377402-A (GB)
Title: Digitally controlled frequency filter
IPC: H01R29/00
Filed: 1972-05-24
Abstract: 1377402 Active filters; amplifiers SINGER CO 24 May 1972 [26 May 1971] 24369/72 Headings H3U and H3T A filter comprises: a plurality of time constant circuits 152-154, 142 and 155-157, 143; means 151 for selectively interconnecting the circuits to form either a highpass or a lowpass filter; and a plurality of electronic switching means 121- 138 connected to respective individual elements of the time constant circuits which are actuated by digital signals to select which individual elements are connected into the selected filter to determine its cutoff frequency. As described, the unit 151 comprises a plug and socket arrangement, Fig. 7 (not shown). The connections 162- 177 are made to the socket part and the pins of a corresponding plug part are suitably interconnected, Figs. 8a, 8b, 8c, 8d (not shown), to give lowpass or highpass active filter configurations of first or second order, Figs. 1-4 (not shown). This interconnection determines which of the capacitors 152-154, 155-157 are used in the time constant circuits. Selection of the appropriate resistor is performed by FET switches 121-138 which are controlled by digital command signals from a store 107.
Patent GB-721430-A (GB)
Title: Improved motor fuel
IPC: C10L1/22
Filed: 1950-11-29
Abstract: A motor fuel comprises a mixture of hydrocarbons, boiling in the gasoline boiling range and having an A.S.T.M. 50 per cent distillation point below 310 DEG F., and 0.5-1 per cent by volume of morpholine.  Optional ingredients of the fuel include lead alkyl anti-detonants, dyes, gum inhibitors and oxidation inhibitors. The motor fuel may be employed in automobile, marine, stationary and airplane engines and the presence of the morpholine prevents engine stalling due to carburettor icing when operating under cool moist conditions.  In an example, a fuel consisting of a petroleum distillate gasoline, of 100-325 DEG F. boiling range and having an A.S.T.M. 50 per cent distillation point of 200 DEG F., and 0.25 per cent by volume of morpholine is used to operate an aircraft engine.
Patent GB-670781-A (GB)
Title: Improvements in or relating to typewriting machines
IPC: B41J7/02
Filed: 1948-09-18
Abstract: 670,781. Typewriters. JULLIARD, M. Sept. 18, 1948 [Sept. 18, 1947], No. 24502/48. Class 100 (iv). In a typewriter the operation of a key 1 moves its corresponding type-lever 15 to an operative position where a common tensioned spring is released to effect a printing stroke and advance the carriage a letter-space. The keys 1 are pivoted at 2 and each has a depending flexible arm 5 carrying a pusher 4 which engages a shoulder 6 of a thin flexible connecting strip 7 and moves it to the left, Fig. 2. A projection 12 at the other end of the strip engages the forward edge of the type lever 15 and partially raises it into the operative position shown. This partial rotation of the lever 15 moves an attached toothed sector 17 into the path of its associated tooth sector 18 so that when the escapement mechanism of the machine is operated, one revolution is imparted to all sectors 18 arcuately coupled together and the particular type lever in the operative position is impelled to'effect printing. The escapement mechanism is operated by the strips 7 which engage a bar 9 rocking a shaft 11 permitting a letter space movement to a shaft 34, Fig. 5, driven by a cord 33 attached to an arm 30 strongly tensioned by the common spring 32. Attached to the shaft 34 is a pinion 35 meshing with a gear 38 having attached thereto a gear 39 which on receiving the letter spacing rotation causes pinions 40 to make one complete revolution, effecting through bevel gearing rotation of the sectors 18. In a modification, Fig. 6, the printing movement of those type levers moved into operative position shown is effected by the sliding movement of sectors 22 against ends 24 of the levers 14, the sectors 22 being activated by a single or double lobed cam 21 driven one or half a revolution for each character to be typed by a mechanism similar to that driving the pinions 40. The type levers are repulsed by a light spring 26 and the key-levers by springs 3.
Patent GB-172084-A (GB)
Title: Improvements in and relating to supervisory mechanism for valves
IPC: F16K37/00
Filed: 1920-08-24
Abstract: 172,084. White, A. E., (Newman Clock Co.). Aug. 24, 1920. Indicating a n d recording- mechanism, applications of.- Relates to supervisory or indicating and recording mechanism for valves, more particularly for automatic sprinkler systems, and comprises means, located at a variable distance from the valve for rendering a record-making device or key inaccessible when the valve is in an abnormal (closed) position. For this purpose the valve hand-wheel 15, Fig 1, is geared, as shown, through gearing 18, 20, &c., a flexible or other shaft 47, Figs. 1 and 2, and gearing 48, 49, Fig. 2, to a drum 51 on which the chain 52 of a record-making key 53 is wound so as to make the key inaccessible for use when the valve is closed. In the open position of the valve, a slotted drum 58 has withdrawn a catch-bolt 60, thereby releasing the door 56 of the enclosing-box 44 to give access to the key. In the gearing box 23, the hub 29, Fig. 5, of a pinion 27 has a flattened portion which is adapted to engage a mutilated flange 31 on an internal-rack gear wheel 28 so that, after the rack 28 has travelled over the pinion 27, the said pinion is locked against further rotation whilst leaving the rack-wheel still free to rotate. Bv this means the drum 51 is arranged to wind up the key to an inaccessible position, or render it accessible, in the initial closing movement or final part of the opening movement, respectively.
Patent GB-532357-A (GB)
Title: Improvements in and relating to elastic fluid turbines
IPC: F01D5/30
Filed: 1939-08-26
Abstract: 532,357. Elastic fluid turbines. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 26, 1939, No. 24581. Convention date, Aug. 27, 1938. [Class 110 (iii)] The abutting edge of the roots of turbine blades are bevelled as at 22 and welded together. The side faces of the roots have grooves 17 parallel with and as deep as the welds. The meeting faces may have aligned grooves 20 forming bores which separate the welds from the cracks 19 between the faces. The blades described are secured to the rotor by the known inverted dovetail structure.
Patent GB-1176320-A (GB)
Title: Process for Preparing Powdered Extracts from Vegetable Materials
Inventor: MISHKIN ABRAHAM RUDOLPH
IPC: B01J2/04
Filed: 1968-05-23
Abstract: 1,176,320. Preparing coffee and tea extracts; agglomerating. NESTLE'S PRODUCTS Ltd. 23 May, 1968 [6 June, 1967], No. 24587/68. Headings A2B and A2E. A process for preparing a powdered vegetable extract (e.g. a tea or coffee powder) comprises spray-drying an aqueous vegetable extract by injecting said aqueous extract and a current of hot air into a drying chamber, screening the resultant powdered extract into at least one relatively coarse particle fraction and a relatively fine particle fraction, and feeding the relatively fine particles into the drying chamber in at least one current of steam or steam-containing gas (e.g. air, nitrogen or carbon dioxide) to agglomerate said relatively fine particles. the relatively fine particles may be ground and cooled before being fed into the drying chamber through one or more nozzles surrounding the hot air current. The drying chamber may have a cyclone separator for removing very fine particles from the chamber. These may be combined with the relatively fine particle fraction. The dried powdered extract may be separated into an oversize fraction, the desired fraction and the relatively fine particle fraction.
Patent GB-219538-A (GB)
Title: An improvement in hydraulic flanging presses
IPC: B21D22/06
Filed: 1923-10-04
Abstract: 219,538. Fielding, J. Oct. 4, 1923. Flanging; dies.-In a hydraulic press for flanging metal plates of the type in which the outer die J<1> is carried on a fixed girder B and the inner die J on a girder A moved downwardly by overhead rams and in which the plate is gripped by a die or plate I on a second girder C moved beneath the fixed girder by auxiliary rams, the auxiliary cylinders E are seated on flanges at the sides of the fixed girder B so that they may be conveniently accessible and in order to reduce the depth of the pit foundations for the press. The auxiliary rams D work upwards and have cross heads connected by tie rods F to the girder C. The plate is placed on the outer die and clamped against the die J by the plate I through supplementary thrust rods H and thrust pieces G. During flanging, the plate I serves as the bottom of the outer die and on withdrawal of the die J discharges the flanged plate.
Patent GB-840900-A (GB)
Title: Bonded fibrous product and method of making same
IPC: D04H1/64
Filed: 1957-08-06
Abstract: 840,900. Agglutinated fibrous materials; laminates. ROHM & HAAS CO. Aug. 6, 1957 [Aug. 13, 1956], No. 24722/57. Class 140. A bonded non-woven fibrous product consists of fibres, which are predominantly non- proteinaceous and incapable of felting, distributed in random away and bonded together by a binder formed from a water-insoluble linear polymer of monoethylenically unsaturated monomeric units comprising 0.5 to 10% by weight of units containing carboxyl (-COOH) groups which binder is free of polyvalent metal salts. Specified fibres are glass, mineral wool, jute, sisal, ramie, hemp, cotton; cellulose acetate, polyacrylonitrile; copolymers of acrylonitrile with vinyl chloride, vinyl acetate, methacrylonitrile or vinyl pyridine; nylon and ethylene, glycol-terephthalate polymers. The fibres may be formed into a mat by carding or air-deposition. The binder may be applied in free acid form, or in the form of an alkali metal salt, an ammonium salt or a salt of a water-soluble amine. Application of the binder is by impregnation with powder or with an aqueous dispersion. The binder may be obtained by emulsion polymerization of monomers containing carboxyl groups with other monoethylenically unsaturated co-monomers. Specified co-monomers are primary and secondary alkyl acrylates or methacrylates, vinyl esters of saturated monocarboxylic esters of over two carbon atoms, tertiary amyl methacrylate, tertiary butyl or tertiary amyl acrylate, cyclohexyl or benzyl acrylate or methacrylate, acrylonitrile, methacrylonitrile, styrene, vinyl chloride, chlorostyrene, vinyl acetate, p-methylstyrene, acrylamide and methacrylamide. The binder dispersion may be applied to the fibres after formation of the web or may be applied, by spraying, to the fibres as they fall through the settling chamber in the case of air deposition. The binder may be insolubilized by heating. An aminoplast such as urea- or melamine-formaldehyde may be mixed with the binder or applied in a separate operation. The bonded fibrous sheets may be impregnated with an unsaturated polyester resin dissolved in styrene and cured to form moulded articles, or may be incorporated into laminates either as interlayers or backing sheets in conjunction with plastic films or sheets, of polyethylene or nylon, or with textile fabrics of woven, braided, knitted, knotted or felted character. Examples describe the making of bonded fibrous material using glass fibres or mixtures comprising viscose, acetate, nylon, acrylonitrile or cotton fibres.
Patent GB-1136423-A (GB)
Title: A scraped-surface heat-exchanger
Inventor: SKI SLAWOMIR MICHAL ZIETAR
IPC: F28F19/00
Filed: 1966-06-02
Abstract: 1,136,423. Heat exchangers. A. JOHNSON & CO. (LONDON) Ltd. 9 May, 1967 [2 June, 1966], No. 24728/66. Heading F4S. [Also in Division B1 The inner surface of a cylindrical heatexchange wall 16 is wiped by rotary scraper means comprising a rotor body 1 formed with radial holes 7 in which are received with a slide fit, pins 18 carrying scraper blade holders 12 fixed to the pins, and scraper blades 15 mounted on the holders. The blades are thrown by centrifugal action (which may be assisted by springs if desired) against the heat-exchange surface as the rotor rotates. The scraper blade units are disposed in rows extending axially one on each side of the rotor as shown; the blades in each row being axially spaced but relatively staggered in the two rows so that the whole heat exchange surface is wiped. The blades may be made of polypropylene in which case they are secured by screws to the holder. Alternatively the blades may be of white metal moulded on to the blade holders and replaced when necessary by melting off and remoulding.
Patent GB-1186339-A (GB)
Title: Improvements in or relating to Tape Transports Apparatus
IPC: G11B15/43
Filed: 1968-05-24
Abstract: 1,186,339. Feeding record tapes. NEWELL INDUSTRIES Inc. 24 May, 1968 [31 May, 1967], No. 24874/68. Heading G5R. The work load on a capstan feeding tape from a supply roll is maintained substantially constant in spite of the variation in the diameter of the roll. As shown, Fig. 1, tape is fed in either direction between rolls 11 and 12 by a capstan 13 against which the rolls are pressed by torque motors 26 through rack-and-pinion arrangements 22, 24. The diminution in the leverage of the capstan on the dwindling supply roll is balanced by the reduction in the resistance exerted by a brake band 36 as the advance of the supply roll lowers the tension in a spring 41. A weaker spring 46 releases the brake on the takeup roll. The arrangement is adapted to tape transports having idler rollers between the capstan and the tape rolls (Fig. 3), using a normal capstan and pinch-roller (Fig. 2), or having the tape roll axes mounted for rectilinear movement (Fig. 4).
Patent GB-1308947-A (GB)
Title: Impregnating and or sealing metal castings
IPC: B05D3/04
Filed: 1970-05-22
Abstract: 1308947 Proofing metals DEUTSCHE GOLD-UND SILBER SCHEIDEANSTALT and BUTTNER SCHILDE-HAAS AG 22 May 1970 [22 May 1969] 24890/70 Heading D1P [Also in Division C3] A process for impregnating and/or sealing metal castings to render them less pervious to liquids and gases comprises introducing a liquid monomeric ester of a polyhydric alcohol completely esterified with acrylic or methacrylic acid, or a mixture of such esters, into the pores of the casting, and hardening the ester or esters by heating in the absence of a polymerisation catalyst. The monomer can be introduced by application of vacuum or pressure. The castings may be formed from aluminium, magnesium and alloys of these metals, as well as from metal bronzes. The monomers may be derived from alcohols such as mono-, di- and tri-ethylene glycol, neopentyl glycol, butanediol and penta-erythritol. The monomers may include a conventional amount of a polymerisation inhibitor, e.g. quinone, hydroquinone or t-butyl pyrocatechol.
Patent GB-517900-A (GB)
Title: Improvements in and relating to the suspension of curtains or like draperies
IPC: A47H1/142
Filed: 1938-08-24
Abstract: 517,900. Suspending curtains and valances. BARROS, J. Aug. 24, 1938, Nos. 24897 and 29821. [Class 52 (v)] Curtains and valances or like draperies are supported on window or other' structures by brackets of rounded contour having one side fixed to the lintel and the other side, which-. is deeper, fixed to the jamb, the ends of the valance being-given a.rounded contour and the ends of the curtain either a rounded contour or a straight outline. As shown, the brackets each have flanges 3, 4, Figs. 2 and 3, for securing to the jamb and lintel and have a groove 6 and a fastening loop 9 for the valance support. The curtain support may be held in position by a loop 13 so as to avoid fouling of the valance when the curtain is drawn. In the form shown in Fig. 6, the curtain support passes along a groove 15 to a loop 16 and receives a rounded contour similar to the valance. In a modification, Fig. 4 (not shown) the groove 6, is replaced by a step-like formation or by a series of outward projections. Intermediate brackets may be provided particularly in connection with bay windows to. resist the stress of the valance and curtain supports. Such a bracket is shown in Fig. 7 wherein one arm 22 clears the top of the valance 24 and suitably engages the valance support 25, or as shown in Fig. 8, the arm 22 may engage a ring 27 on' the valance. A lower arm 23 holds the curtain support and may be provided with a spring head to meet the varying angles occurring in different types of bay windows.
Patent GB-931655-A (GB)
Title: Improvements in or relating to flyers for spinning and twisting frames
Inventor: WARD KENNETH
IPC: D01H7/24
Filed: 1960-07-18
Abstract: 931,655. Flyers for spinning and twisting machines. FAIRBAIRN LAWSON COMBE BARBOUR Ltd. July 10, 1961 [July 18, 1960], No. 24956/60. Class 120 (2). A flyer for use in a spinning or twisting machine comprises a hub portion 10 from which depends a single, part cylindrical, leg 11 having an eye 18 adjacent its lower end, the arrangement being such that the yarn passes downwardly on the inside of the leg from a yarn guide 16 adjacent the top of the flyer to and outwardly through the eye 18, then over part of the outer surface of the leg before passing inwardly to the bobbin 25. The leg 11 may have only a single eye 18, in which case the yarn passes over the trailing edge of the arm before passing to the bobbin but in the embodiment shown in Fig. 2 a second eye 19 is formed in the bottom of the leg to guide the yarn as it passes inwardly to the bobbin. The eyes preferably have hard metal inserts, e.g. of tungsten, and threading slots running to the edge of the leg 11. A plate 17 which carries guide pin 16 has formed, adjacent one end, a D-shaped hole 33 in the leg 11 so that fly accumulating in the upper part of the flyer is centrifugally expelled therethrough. The flyer is preferably made of light alloy and longitudinal corrugations may be formed on leg 11 to improve its rigidity: in the interest of safety, a beading is formed on the leading edge of the leg 11. To dynamically balance the rotating parts weights are mounted on the hub 10 and on top of the wharve 13.
Patent GB-776676-A (GB)
Title: Process for purifying a cuprous salt catalyst in the synthesis of acrylonitrile
IPC: B01J21/02
Filed: 1954-08-27
Abstract: <PICT:0776676/IV(b)/1> In the synthesis of acrylonitrile from hydrocyanic acid and acetylene in the presence of an aqueous cuprous salt catalyst, the catalyst is regenerated by removing from the reactor at least part of the catalyst containing polymerization products in solution, and diluting with water with the addition of an agent yielding chloride ions; the cuprous salts remain in solution, while the polymerization products precipitate and are removed from the solution; the copper is recovered from the purified solution by known methods and reintroduced in the synthesis of acrylonitrile in suitable form.  As shown, hydrocyanic acid in liquid form or as an aqueous solution is introduced at 1 into reactor R containing the catalyst at 80 DEG  C.; nitrogen is first fed through line 2 and is then replaced by acetylene.  Gaseous products are circulated by pump P through lines 4 and acrylonitrile is washed out in vessel W; waste gas is removed at 3.  Catalyst for regeneration is drawn off at 6 from branch pipe 5 and run into a cold chloride solution. Polymers precipitate and are filtered off, cuprous cyanide being precipitated from the purified solution and returned to the reactor at 7. Regeneration may be continuous or a part of the catalyst may be treated at intervals.ALSO:An aqueous cuprous salt catalyst, used in the synthesis of acrylonitrile from hydrocyanic acid and acetylene (see Group IV(b)), is regenerated by removing from the reactor at least part of the catalyst containing polymerization products in solution, and diluting with water with the addition of an agent yielding chloride ions; the cuprous salts remain in solution, while the polymerization products precipitate and are removed from the solution; the copper is removed from the purified solution by known methods and reintroduced in the synthesis of acrylonitrile in suitable form.  The catalyst removed from the reactor may be cooled to room temperature before treatment.  Suitable agents yielding chloride ions are water-soluble in organic chlorides, e.g. of sodium, potassium, ammonium, zinc, aluminium, barium, magnesium, and calcium, hydrochloric acid, and hydrochlorides of organic basis, e.g. pyridine.  The catalyst may be diluted to from two to six times its volume; the polymers are removed by centrifuging or by filtering through active carbon or an active earth.  Copper is then recovered from this solution by adding zinc or iron, by precipitation as hydroxide, or preferably by precipitation as cyanide by the addition of an alkali metal or alkaline earth cyanide or of hydrogen cyanide in gaseous, liquid, or solution form.  The cuprous cyanide is filtered off and redissolved in the catalyst.  As an example one-tenth of the catalyst is removed from the reaction vessel for purification two or three times daily.  Alternatively the regeneration operation may be carried out continuously.  Hydrochloric acid and ammonium chloride are added to the catalyst when necessary.
Patent GB-685686-A (GB)
Title: Photographic contact printing and dry developing machine
IPC: G03D7/00
Filed: 1948-09-24
Abstract: 685,686. Photographic contact-printing and developing apparatus. GENERAL ANILINE & FILM CORPORATION. Sept. 24, 1948 [Oct. 3,1947], No. 25022/48. Class 98 (ii). [Also in Group XXX] In a photographic dry developing machine, the developer vaporizing chamber comprises a tank having a perforated wall for escape of developing vapours arranged so that this wall is at the bottom of the tank facing downwardly in a substantially horizontal position and a sealing sleeve for retaining vapours within said chamber moves the sensitized material in contact with said wall. As shown, a tracing T and a sensitized diazotype sheet S are fed in registry from the feed-board 11 by perforated belts 13 and belts 18 to a glass printing cylinder 12 enclosing a high-pressure mercury vapour lamp. The sheets are separated from the cylinder by an air jet from chamber 21, and are separated by suction chambers 22, 25 so that the tracing T falls into the adjustable receiving tray 26. The sensitized sheet passes between the guide members 23, 24 and is fed by a rubber sealing belt 31 under a chamber 28 whose bottom 37 is perforated to permit the passage of ammonia vapour generated in the tray 29 and around which passes a fine-mesh link belt 38. The developed sheet is discharged, according to the position of a deflector 44, into the receiving tray 45 or to the rear of the machine. The chamber 28 has flanges 47 about its perforations 46 on the inside of the chamber and these form " reservoirs " 48 between the perforations for condensed moisture which is drained off at the lower front end of the chamber. The flanges 47 may either be integral with the wall 37 and formed by extrusion therefrom or separate inserts pressed into apertures in the wall with which they form a liquid-tight joint. Specification 615,091 is referred to.
Patent GB-760233-A (GB)
Title: Coloured non-ferrous metallic compositions and methods of making same
IPC: C22C1/02
Filed: 1953-09-10
Abstract: A coloured non-ferrous metallic composition is obtained by heating a non-ferrous metal or alloy to above its melting point but below that of at least one constituent of a pigment, which is then dispersed in the metal, and finally solidifying the mixture by cooling.  The pigment may be added with the metal to a crucible and then heated, or added to the molten metal in a crucible.  Examples are given of colouring aluminium by using one or more metals such as chromium, gold, cobalt, zirconium, titanium, copper, antimony, iron, lead and tin, non-metals such as graphite or silicon, or compounds such as clays, white lead and oxides of copper, tin and titanium.  A vitreous binder such as a clay or silica sand may be added to the pigment, and is stated to be necessary when the pigment is metallic, and stirring may be used to disperse the finely divided pigment in the metal.  The colouring of brass with graphite is also desired.