baber/WOPTO huggingface dataset:
Patent GB-920140-A (GB)
Title: Process for the production of new derivatives of hydrogenated pyridones
IPC: C07D/
Filed: 1961-05-25
Abstract: The invention comprises compounds of the formula <FORM:0920140/IV(a)/1> (wherein R1 and R2 are hydrocarbon radicals or together represent an alkylene radical of 4 to 7 carbon atoms, R3 is an alkyl radical of at most 5 carbon atoms, an aryl or an aralkyl radical and R4 is an alkyl radical of at most 4 carbon atoms or an aryl radical) and their preparation by condensing, in presence of a mineral acid, an isoxazole of the formula <FORM:0920140/IV(a)/2> with a compound which yields a carbonium ion \sJC(R1.R2)CH2COR3.  Such compounds may be, for example, unsaturated ketones C(R1.R2)=CHCOR3, hydroxy ketones HO.C (R1R2)CH2COR3 or haloketones Hal.C(R1.R2) CH2COR3 or ketals thereof or \sJC(R1R2) CH2C­CR5 (R5 being hydrogen or an alkyl radical containing one less carbon atoms than the number of carbon atoms in R3 when this is alkyl, suitable compounds being the alcohols HO.C(R1.R2)CH2C­CR5) prepared from ketones R1.R2CO and suitably substituted propargyl magnesium halides.  Reaction with the unsaturated ketones may proceed through the intermediate <FORM:0920140/IV(a)/3> which compound, or an acetal, enol ether or enol ester thereof may then be cyclized to the required compound by treatment with an acid or basic condensing agent; or it may proceed through the intermediate <FORM:0920140/IV(a)/4> or through the 3,4-dihydro-derivatives of the required products, which may then be obtained by dehydration or dehydrogenation. Reaction with the unsaturated alcohols proceeds direct if a mercury salt is also present, or, if this is absent, intermediates of the formula <FORM:0920140/IV(a)/5> are obtained, and then converted into the required products by treatment with sulphuric acid containing a mercury salt.  Detailed examples are provided.
Patent GB-1375878-A (GB)
IPC: H01M50/54
Filed: 1972-04-24
Abstract: 1375878 Electrochemical cells SOC DES ACCUMULATEURS FIXES ET DE TRACTION 24 April 1972 [29 April 1971] 18968/72 Heading H1B In an electrochemical cell sets of positive and negative plates are respectively connected to at least one terminal 4 by means of conductive spacers 3 carried by a common post and clamping arrangement 5, wherein each plate has a lug 1 the ends 2 of which are received in recesses 6 formed in one face of the spacers, Fig. 3, so as to be gripped betweeen the spacer and an adjacent spacer or the terminal 4. The depth of the recess is equal to the thickness of the plate lugs to be gripped and the portion of the recess contacting the lugs may have a curved cylindrical surface 11 to improve the gripping thereof. The clamping together of the spacers, lug and terminal may be effected by riveting or by nuts engaging the threaded ends of the common post which extends through an aperture 7 in the spacers and terminal located between the unrecessed portion of the spacer and the lug-gripping surface.
Patent GB-596229-A (GB)
Title: Fastening means
IPC: A44B11/20
Filed: 1944-10-04
Abstract: 596,229. Fastenings. SIEGEL, J. Oet. 4, 1944, No. 19051. Convention date, Feb. 8. [Class 44] A buckle for a strap comprises a plate having two projections at the back thereof and situated adjacent opposite ends of the plate, one projection being angular and the other projection being in the form of a stud having a shank and an enlarged head. The buckle 15 has a hooked pin 23 and a stud 19 which are passed through adjacent perforations 27<1>. 27<11> respectively in one end 29 of the strap. The loose end 30 of the other end 31 of the strap is passed through the longitudinal slot of a loop member 16 and is secured to the portion 31 as by means of a snap fastener 32. The eye of the loop member 16 is made to engage the stud 19 behind an enlarged head 20. One or more keeper loops 35 may be provided. The buckle may be arranged on the strap in reversed order, i.e. with the pin 23 engaging the eye of the loop member 16. The latter may be replaced by eyes or perforations punched in the end 30 of the belt itself.
Patent GB-647944-A (GB)
Title: Improvements in or relating to vacuum electron discharge tubes
IPC: H01J17/24
Filed: 1946-06-26
Abstract: 647,944. Electron discharge apparatus. PHILIPS LAMPS, Ltd. June 26, 1946, No. 19073. Convention date, May 2, 1942. [Class 39 (i)] A vacuum electron discharge tube using an oxide cathode has a layer consisting of a basic oxide and/or hydroxide, which acts as a getter to prevent chlorine or chlorine compounds evolved during manufacture and use of the tube from poisoning the oxide cathode, applied to substantially the whole of the inner surfaces of the glass parts of the tube. The substances used for the layer may be zinc or calcium oxide or potassium or sodium hydroxide. Potassium hydroxide may be applied by dissolving it in alcohol, spraying or immersing the bulb in the solution, and then evaporating the alcohol.
Patent GB-242704-A (GB)
Title: An improved holder for sliding window sashes
IPC: E05F11/00
Filed: 1924-08-11
Abstract: 242,704. Wood, G. E., and Lamb, C. R. Aug. 11, 1924. Holders for sliding windows of the type wherein spring-pressed members engaging racks are used between the frames and the sashes. The racks 2 are formed by a series of connected recesses 3, wider and deeper at the upper than at the lower end, and the engaging members are formed as rounded projections 6a on a spring pressed plate 6. The projections may be locked in engagement with the rack by a flat key 9. Instead of the projections 6<a>, balls held in sockets on the plate 6 may be provided. In a further modification the engaging members consist of a number of spring-pressed plungers 14, Fig. 8, mounted in a housing 15, and in this case the window may be secured by a rod 22 inserted behind a plunger 19<a>.
Patent GB-412416-A (GB)
Title: Improvements in slicing machines
IPC: B26D7/01
Filed: 1933-07-06
Abstract: 412,416. Slicing-machines. MAATSCHAPPIJ VAN BERKEL'S PATENT NAAMLOOZE VENNOOTSCHAP, and BERKEL, C. F. M. VAN, 33, Boezemsingel, Rotterdam, Holland. July 6, 1933, No. 19140. [Class 28 (ii).] In a slicing-machine of the kind wherein the feed is effected by moving the substanceengager so that, immediately prior to the cutting stroke of the carriage, the substance is pressed against an adjustable gauge plate, means are provided to lock the substance engager against further movement after the substance leaves the gauge plate. The usual cover plate for the knife is thus rendered unnecessary. The feed may be effected by a spring or weight or manually. As shown, the carriage reciprocates on guides 7 and the arm 12, carrying the substance-engager, is slidable on a rod 13. The feed motion is effected by a spring 14 trained over pulleys 15, 16, 17. The bearing of the arm 12 includes a tilting clutch ring 20 which normally resists movement of the arm towards the knife 4. The ring is released when the substance is away from the knife 4 and in front of the gauge plate 5, by a sliding pin 22 operated by linkage 23, 24, the link 23 having a roller 28 which is engaged by a bar 25 carried on short pivoted arms 26. The bar 25 has a depending roller-ended arm 27 attached to a spring which normally tends to withdraw the bar 25 from the roller 28. Towards the end of the return stroke of the carriage, the roller on the arm 27 engages a fixed cam which rocks the bar into engagement with the roller 28 to release the clutch ring. When the slicing stroke commences, the arm 27 is released from the fixed cam and the bar 25 is withdrawn by the spring from the roller 28, thus allowing the clutch ring to tilt under the action of its spring 21, to lock the arm 12 against further movement. In a modification the clutch ring is mounted in a fixture on the carriage, and the rod 13 is attached to the substance engager.
Patent GB-687736-A (GB)
Title: Improvements in or relating to substantially shrunk-proof woollen yarn
IPC: D02G3/04
Filed: 1950-08-01
Abstract: 687,736. Mixed fibre yarns. DU PONT DE NEMOURS & CO., E. I. Aug. 1, 1950 [Aug. 2, 1949], No. 19170/50. Class 120(iii) Shrinkproof yarns comprise wool and from 15 to 40 per cent of staple fibre prepared from an acrylonitrile polymer containing at least 85 per cent acrylonitrile. Polyacrylonitrile fibres may be used, preferably in the proportion of 15 to 30 per cent of the blend; or a co-polymer of acrylonitrile and and up to 15 per cent of vinyl acetate, vinyl chloride, acrylic and methacrylic acids or derivatives and homologues thereof, styrene, methyl vinyl ketone, vinyl pyridines, isobutylene or other polymerizable hydrocarbons may be used, the co-polymer fibres preferably forming from 30 to 40 per cent of the blend. A particular blend contains 30 to 40 per cent of fibres prepared from a copolymer containing 95 per cent acrylonitrile and 5 per cent 2-vinyl pyridine. The acrylonitrile homo-polymer or co-polymer preferably has a molecular weight of from 40,000 to 250,000. The wool and acrylonitrile polymer fibres may be stock blended and then spun into a yarn using the American (modified cotton) spinning system; or slivers of acrylonitrile polymer staple may be combined with wool top on the drawing frame of the American spinning system.
Patent GB-925688-A (GB)
Title: Improvements in or relating to anti-lash devices
IPC: B62D7/00
Filed: 1961-05-29
Abstract: 925,688. Steering vehicles. FORD MOTOR CO. Ltd. May 29, 1961 [June 13, 1960]. No. 19246/61. Class 79(5) [Also ,in Group XXIV] In a rack and pinion steering mechanism, the rack 22 has a central longitudinal groove 140 in which a toothed nylon insert 142 is located and spring-pressed into engagement with the pinion. Pins 150, 152 secure the insert 142 in the groove 140 and a leaf spring 156 is positioned behind the insert. The mechanism may be combined with a planetary reduction gear train employing a nylon planetwheel as described in Specification 925,687.
Patent GB-202139-A (GB)
Title: Improvements in, and relating to, clocks, chronographs and the like
IPC: G04C3/02
Filed: 1922-07-14
Abstract: 202,139. Steuart, A. July 14, 1922. Electric clocks.-In a clock, chronograph, &c., the speed of a continuously-running electric motor K, Fig. 1, arranged to drive or to control the movement of hands or of a telescope, recording- drum, &c., is controlled by a pendulum A or balance-wheel the swing of which is maintained by a spring or gravity-arm E driven from the motor K. A cam J operated by the motor K raises the arm E by means of a weighted lever H. When contacts G, G<1> are in engagement, the motor K is accelerated slightly beyond its mean speed by a dynamo or battery M. A resistance N may be inserted to prevent sparking and to maintain the motor K very slightly below its normal speed when the contacts G1 G<1> are open. The lever H may be mounted on the same centre as the gravity-arm E. In a modification, the end F, Fig. 3, of the gravity-arm E is arranged to engage a roller P mounted on the foot of the pendulum. The clock, telescope, &c. may be driven directly by the device, or may be arranged at a distance and driven by electric impulses transmitted through a commutator controlled by the device.
Patent GB-264787-A (GB)
Title: Improvements in engine pistons
IPC: F16J9/20
Filed: 1926-08-05
Abstract: 264,787. Barbarou, M. J. B. Jan. 25, 1926, [Convention date]. Pistons. - An oil scraperring 2 is formed with a peripheral channel 3 from which ducts 8 lead to the scraperring groove, ducts 9 leading from the groove to the interior of the piston. Oblique ducts 4 also lead to the interior of the piston from grooves 6, 7 adjacent to the edges of the scraper ring groove. The ring 2 may be in one piece, or comprise two rings placed side by side with adjacent edges bevelled to form the groove 3.
Patent GB-1395044-A (GB)
Title: Centrifugal separator with differential scroll drive
IPC: B04B1/20
Filed: 1972-04-26
Abstract: 1395044 Centrifugal separator BELOIT CORP 26 April 1972 [28 May 1971] 19485/72 Heading B2P A centrifugal separator, for separating intermixed solids and liquid comprises a rotatable hollow bowl 10 having its inner diameter decreasing towards one end with a solids discharge opening 12a at that end and a liquid discharge opening 13a at the other end; a helical conveyor scroll 18, 19 coaxially supported within the bowl for rotation at a controlled speed different from that of the bowl for moving solids towards the discharge openings 12a; feed means 20, 21 within the bowl for supplying a solids-liquid mixture thereto; a variable speed drive means 29 having an output shaft 39 connected to the scroll 18, 19 and having first and second input shafts 41, 43 respectively; a main drive motor 27 connected to the bowl 10 through the first input shaft 41 for driving the bowl at a predetermined constant speed; a hydraulic pump 35 driven by the motor 27; a hydraulic motor 34 connected by fluid-carrying lines 36 to the pump 35 to be driven thereby and drivingly connected to the second input shaft 43 of the drive means 29; and means 37 for controlling the relative hydraulic fluid flow displacement between the pump 35 and the hydraulic motor 34 so that the speed of the shaft 43 is controlled to control the speed of the scroll 18, 19 in relation to the speed of the bowl 10. The motor 27 drives the first input shaft 41 via a fluid coupling 28 and a V-belt drive 26. The drive means 29 is a planetary gear reducer comprising planetary gears 32 connected to the output shaft 39 and sun gears 31 and 33 respectively connected to the first and second input shafts 41, 43. The control means 37 is a valve which is incorporated in the fluid-carrying lines 36 and controls the hydraulic fluid flow directed between the pump 35 and the motor 34 so that the pump may operate as a motor and the motor as a pump. A pressure sensing valve 38 is connected to the lines 36 to reuse the output hydraulic pressure of the pump 35 and is also connected to a feed control valve 22 to regulate the feed to the bowl.
Patent GB-179858-A (GB)
Title: Improvements in furnace fire-bars
IPC: F23H17/12
Filed: 1921-07-20
Abstract: 179,858. Towers, H., and Morley, W. H. U. July 20, 1921. Fire-bars.-Fire-bars having a channelled upper surface are constructed so that the width of the channel expands and contracts along the length of the bar and the bottom of the channel varies in depth, the high parts of the bottom of the channel coinciding with the contracted parts of the length. As shown in Fig. 1, the sides B of the fire-bar are of wave form to form the chan. nel A, and the bottom of the channel A is also of wave form, so that the crests C coincide with the contracted parts A<1>, and the hollows D coincide with the expanded parts A<2>. Adjacent pairs of bars are made complementary and spaced at the ends by lugs F which provide an air space G between the bars. As shown in Figs. 3 and 4, the form of the troughs is provided by making the sides of the bars and the bottom of the troughs of a zig-zag form H.
Patent GB-476760-A (GB)
Title: Improvements in or connected with devices for use in bee-hives
IPC: A01K47/06
Filed: 1936-07-14
Abstract: 476,760. Bee - keepers' appliances. BENNET, A. K. M. W. July 14, 1936, No. 19499. [Class 5 (ii)] A bee-clearer comprises one or more beeescapes C, Figs. 3 and 4, mounted directly on a panel A of perforate or imperforate sheet-metal provided with a frame B or edge of appreciable thickness measured at right-angles to the plane of the panel. In the form shown in Fig. 3, two bee-escapes C are used, while in the arrangement shown in Fig. 4, the panel comprises two sheets A<1> of perforated zinc apertured at 2 to give entrance to the escape C that is secured to the underside of one of the sheets, and at 6 to form a return passage. Apertured shutters 8, 9 movable in guides 7 between the sheets of the panel and operated by wires 10 are adapted to open and close the bee-escape and return passages as desired. According to the Provisional Specification, the panel may be made of wire gauze.
Patent GB-614022-A (GB)
Title: Improvements in and relating to steam superheated elements for use in locomotive and other smoke tube boilers
IPC: F22G7/06
Filed: 1946-06-29
Abstract: 614,022. Making steam-generators. SUPERHEATER CO., Ltd., and MELHUISH, H. June 29, 1946, No. 19503. [Class 83 (ii)] In a superheater for locomotive boilers a five-pipe element return bend at the firebox end is formed by forge welding small pipes 1, 3 to a larger pipe 5 in the same plane, shaping the junction 8, and flash welding thereto an extension pipe 10. Two small pipes 2, 4 are then forge welded to the pipe 10 and the end is closed by swaging. The firebox end portions of the pipes 2, 4, 10 may be of forge weldable heatresisting steel and the small diameter pipes may be corrugated and finned. In order to provide high steam velocity in the bend the pipe 10 is of smaller diameter than the pipe 5.
Patent GB-614070-A (GB)
Title: Improvements in and relating to the bonding of metals to one another
IPC: B23K28/00
Filed: 1946-07-01
Abstract: 614,070. Making composite sheets. MALLORY METALLURGICAL PRODUCTS, Ltd. July 1, 1946, No. 19578. Convention date, July 31, 1945. [Classes 83 (ii) and 83 (iv)] Soldering.-A method of bonding silver or a silver alloy to aluminium, magnesium or alloys thereof or to an iron group metal or alloy thereof such as steel comprises cleaning the bonding surfaces of plates or strips of the metals or alloys to be bonded, coating at least one of said surfaces with silver, bringing the plates together with the coated surface of one in contact with the cleaned or coated surface of the other and then applying heat and pressure to effect bonding. The thickness of the silver bonding layer is preferably from 0.000025 inch to 0.001 inch and is preferably applied by electroplating. The method of cleaning and silver plating steel, aluminium or magnesium is as described in Specification 602,857. A method of bonding silver strip to steel strip comprises unwinding steel strip 10 from a roll 11 and passing it through cleaning and silver plating apparatus 12, unwinding a silver strip 13 from a roll 14 and passing it through a cleaning apparatus 15, bringing the cleaned and coated surfaces together, passing the contacting strips through a hydrogen furnace 16 and finally bonding in a hydrogen atmosphere by means of pressure rolls 18 to complete the bimetal strip 20. Cold reductions of up to 60 per cent may then be made if desired. The bonding temperature is of the order 650-750‹ C. Bimetals thus produced may be used for the manufacture of bearings and electrical contacts or other electrical components.
Patent GB-693081-A (GB)
Title: A method of and apparatus for winning coal by a planing process
IPC: E21C27/34
Filed: 1951-08-20
Abstract: 693,081. Coal planers. DIRECTIE VAN DE STAATSMIJNEN IN LIMBURG. Aug. 20, 1951 [Aug. 25, 1950], No. 19604/51. Class 68(i) In a method of coal mining using simultaneously on a face a plurality of planers, the planers 5 are attached to a common haulage-tackle 8 the stroke of which is equal to or slightly greater than the greatest distance between any adjacent pair of planers, which slide on a guide on the side form of a conveyer 2 to load the coal thereon. In working a faulted seam, the distance between the two planes on either side of the fault is increased so that each of said two planes completes its stroke towards the fault short thereof, thereby leaving a pillar to be cut by hand.
Patent GB-786719-A (GB)
Title: A process for regenerating filter aids
Inventor: CRESPIN GEORGE THEODORE FLOR
IPC: B01J20/00
Filed: 1956-06-25
Abstract: 786.719. Centrifugal separators. SHELL RESEARCH, Ltd. June 25, 1956, No. 19635/56. Class 23 Spent filter medium or filter adjuvant is regenerated by mixing with liquid to form a slurry, and by passing the slurry through a series of hydrocyclones each operated by a pressure jet of additional liquid. The filter material is placed in a tank 4 to which water is supplied by a line 11, and the components are agitated by air supplied by a pipe 5. The hydrocyclones 10, 14, 17, 20 have ejectors 9, 13, 16, 19 connected to branches of the line 11. The slurry is fed to the hydrocyclones by the line 8 and underflows 12u, 15u, 18u, the ejectors being so positioned that the slurry is mixed with the pressure jet before entering the hydrocyclones. The impurities are discharged by the overflows 12w, 15w, 18w, 21w, and the regenerated material from the underflow 21u. Performance figures for and dimensions of the apparatus are given in the Specification.
Patent GB-569805-A (GB)
Title: Improvements in heating devices for the water systems of internal combustion engines
IPC: F02N19/10
Filed: 1943-11-26
Abstract: 569,805. Electrically heating water system of internal-combustion engines. RUNBAKEN, J. H. Nov. 26, 1943, No. 19798. [Class 39 (iii)] A heating device for the water system of an internal combustion engine comprises a heater e of electric resistance type mounted on a permanent or electro-magnet a, b which is brought against the metal f of the engine or cooling system. The winding c of the electro-magnet may be in series with that of the heater. When the magnet is energised by alternating current, eddy currents induced also heat the system. The device may have an insulated handle d and an indicating lamp, and may have two stages of heating.
Patent GB-320346-A (GB)
Title: Improvements in and relating to laminated springs
IPC: F16F1/18
Filed: 1928-07-09
Abstract: 320,346. Stirling, C., and United Steel Cos., Ltd. July 9, 1928. Laminated springs.-Vehicle springs are provided with means which enable the parts of the spring both in front of and behind the axle to resist driving and braking torque, such means consisting of an anchor plate wrapped around the spring eye at one end and positively attached to the spring at two points under reverse load. In the construction shown in Fig. 3, a plate 10 is wrapped around the eyes 9 at each end and forms or is connected to the lowermost spring leaf which is anchored to the centre of the spring by the usual bolt 12. When the spring is subjected to torque, one half is bent reversely and its curvature increased. Such increase of curvature is however limited by the plate 10 which is then put into tension. The plate 10 may be connected to an intermediate leaf or may extend over half or less than half the length of the spring. The central bolt 12 may be dispensed with and the leaves prevented from moving by projections on one leaf entering corresponding depressions on the adjacent leaf.
Patent GB-733907-A (GB)
Title: An improved washing machine
IPC: C23G3/00
Filed: 1953-07-18
Abstract: 733,907. Cleaning centrifuges. JONGE, H., DE. July 18, 1953, No. 19976/53. Class 23. A washing-machine for cleaning centrifuge discs or drums comprises a drum holder 3 suspended from slots or eyes on a lever system 8, 9, 13, 16 for immersion in a tank 1. The holder 3 comprises a series of axles 4 which are spaced apart at distances corresponding to the spacing of the perforations in the drum and have at least one detachable head-piece. The tank may incorporate a heating device and a stirring device. The drums are mounted on the member 3 one within the other and are held in position by a serrated rod disposed between the head-pieces.
Patent GB-812099-A (GB)
Title: A method of producing a substitute for tracing cloth or tracing paper
IPC: B24C1/00
Filed: 1957-06-25
Abstract: A transparent plastic polyethylene terephthalate film is blasted on one or both sides with a hard fine-grain powder applied under pressure, to produce a substitute for drawing paper or tracing cloth. The powder may consist of flint, sand or diamond and is of particle size between 0.005 mm. and 0.05 mm., preferably between 0.01 mm. and 0.05 mm.  The surface of the film may be rinsed in water after treatment.