baber/WOPTO huggingface dataset:
Patent GB-932269-A (GB)
Title: Improvements in or relating to hydraulic vehicle braking systems
IPC: B60T8/26
Filed: 1962-01-24
Abstract: 932,269. Fluid-pressure brakes. ANDRE CITROEN S.A. Jan. 24, 1962 [Jan. 24, 1961], No. 2716/62. Class 103 (1). A valve 5 inserted in a conduit leading from a master cylinder 4 to the brake cylinders of the rear axle 2 of a road vehicle for limiting hydraulic pressure in the rear brake cylinders when the pressure supplied to the brake cylinders of the front axle 1 rises above a predetermined value, comprises a valve stem 10 slidable in a casing 9 and having a head 11 adapted to seat on the upper edge 12 of an opening 13 to which the master cylinder is connected via a passage 15. The rear wheel brake cylinders are connected via a passage 16 to a chamber 14 which is closed off from the chamber 13 when the valve is seated. A spring 21 whose compression is varied in accordance with the load on the rear axle acting via the suspension, a spring 8, lever 6, piston 24, restricted passageways 26 in a plate 25, and piston 23 maintains the valve open in the absence of hydraulic pressure. As the master cylinder pressure rises it acts over the cross-section of stem 10, against spring 21, to close the valve at a pressure dependent on the load, after which the valve remains closed in spite of increasing pressure in chamber 13 until a pressure differential determined by the ratio of the diameter of the valve seat to the area of the valve stem is exceeded. This pressure differential is maintained at braking pressures in excess of the pressure required initially to close the valve. A one-way ball valve 20 disposed in a passage 19 interconnecting chambers 13, 14 allows release of pressure from the rear wheel cylinders when master cylinder pressure is reduced.
Patent GB-1219554-A (GB)
Title: Production of urea
IPC: C07C273/10
Filed: 1969-01-17
Abstract: 1,219,554. Ammonia synthesis. SUMITOMO CHEMICAL CO. Ltd. 17 Jan., 1969 [23 Jan., 1968], No. 2878/69. Heading C1A. [Also in Division C2] Urea and ammonia are produced by a process which comprises:- (1) reacting ammonia with carbon dioxide at a temperature of 160‹ to 230‹ C. at a pressure of 120 to 400 kg./cm.<SP>2</SP> to give an aqueous urea synthesis product solution containing urea, unreacted ammonia and unreacted carbon dioxide; (2) contacting the said product solution with an ammonia synthesis gas substantially free from carbon dioxide, the contacting being carried out at a pressure equal to or at most 50 kg./cm.<SP>2</SP> below the pressure used in step (1), to produce an aqueous solution substantially of urea and water and a gaseous mixture containing unreacted ammonia and unreacted carbon dioxide, steam and ammonia synthesis gas; (3) mixing the said gaseous mixture with a crude ammonia synthesis gas containing carbon dioxide; (4) contacting the gaseous mixture obtained in step (3) with an absorbing liquid which is selected from one or more of the following: water, an aqueous solution of ammonium carbamate, an aqueous solution of urea, an aqueous urea synthesis product solution and liquid ammonia, the contacting being carried out at a pressure equal to or at most 50 kg./cm.<SP>2</SP> below the pressure used in step (1), to produce an aqueous solution of ammonia and ammonium carbamate and an ammonia synthesis gas substantially free from carbon dioxide; (5) recycling the aqueous solution obtained in step (4) to step (1); (6) recycling part of the ammonia synthesis gas obtained in step (4) to step (2); and (7) using the remainder of the ammonia synthesis gas obtained in step (4) in the synthesis of ammonia.
Patent GB-865911-A (GB)
Title: Improvements relating to flexible electrical heating elements
IPC: H05B3/56
Filed: 1957-01-26
Abstract: 865,911. Electric heating resistances. SLUMBERLAND GROUP Ltd., and BRITISH INSULATED CALLENDER'S CABLES Ltd. Jan. 17, 1958 [Jan. 26, 1957], No. 2902/57. Class 39(3). A flexible heater comprises a sleeve of braided glass fibres enclosing a core of braided glass fibres having a resistance conductor wound helically thereon and an outer sheath of P.V.C. or the equivalent. The conductor is preferably of nickel chromium and may be a single wire or a stranded conductor comprising several wires twisted together, each of the wires being capable of carrying the full current for which the heater is designed without excessive rise of temperature. The outer sheath of P.V.C. may be extruded over the braided glass sheath and does not adhere thereto. The heater may be attached to a flexible fabric or other carrier, e.g. for pads, blankets, mattresses or clothing. The core braid is a solid braid or may contain an inner core of untwisted or lightly twisted glass fibres.
Patent GB-644498-A (GB)
Title: A machine for use in bundling loose sticks or the like, particularly for making bundles of firewood
IPC: B65B27/10
Filed: 1948-01-31
Abstract: 644,498. Bundling - machines. SPICE, C. A., and BOWYER, F. E. Jan. 31, 1948, No. 2929. [Class 94(i)] In a machine for use in bundling firewood in which the sticks are inserted endwise into a space surrounded by movable compressing-members, the floor of the space is formed by a trapdoor which is opened automatically when the compressing-members are released to allow the tied bundle to fall through into a sack or other receptacle. The machine shown comprises a base plate 1 mounted on a framework 2 and formed with an opening 3 normally closed by trap-door 4. The plate carries a vertical pivot pin 6 on which are mounted curved compressing-members 7 which cooperate with a presser plate 10 carried by a slidable plunger 9 and fitted with hinged jaws 11 urged by a spring 12 into engagement with lever arm extensions 8 of the members 7. The plunger also carries a transverse bar 13 having down-turned ends 13a which engage ramps 14 on the lever arms to rock them towards each other against the action of a spring 15. The machine is operated by a pedal 16 which actuates through linkage 17-20 a pushrod 21 formed with a projection 27 which engages an abutment 28 on the plunger. The push-rod is guided by the engagement of a pin 25 with ramps 24 and is hinged to a sleeve 22 freely slidable on an arm 23 which is pivoted on the hinge pin 5 of the door 4 and carries an adjustable eccentric 26 engaging the underside of the door. The arrangement is such that the initial movement of the push-rod closes the door and thereafter the sleeve slides along the arm to hold the door closed while the bundle is being compressed. When the pedal is released, the sleeve slides back to the end of the arm and then opens the door to allow the bundle to fall through. The plunger 9 is fitted with a counter 29 which is operated once during each cycle of operation.
Patent GB-550389-A (GB)
Title: Improvements relating to the conversion of hydrocarbons
Filed: 1941-03-05
Abstract: 550,389. Isomerizing heptanes. ANGLOIRANIAN OIL CO., Ltd., BIRCH, S. F., and BESLY, D. M. March 5, 1941, No. 3018. [Class 2 (iii)] The catalytic interconversion of 2 : 4-, and 2 : 3- dimethyl-pentane is effected by treatment with a catalyst comprising concentrated sulphuric acid, chlor-sulphonic acid or fluorsulphonic acid. Temperatures employed vary with the catalyst employed and are generally in the range -70‹ to +50‹C. In examples (1) 2 : 3-dimethyl pentane is reacted with concentrated sulphonic acid at room temperature for 42 hours to give an approximate 50 per cent. conversion. (2) 2 : 4 - dimethylpentane is reacted with concentrated sulphuric aicd as in example (1) to give an approximately 34 per cent. conversion. (3) A mixture of 2 : 3 dimethylpentane and methyl-cyclohexane is reacted with sulphuric acid within the range - 10‹C. to +30‹C. to give an approximately 53 per cent. conversion of the dimethylpentane, the methyl-cyclohexane taking no part in the reaction.
Patent GB-935753-A (GB)
Title: Sockets for use in manipulating nuts, bolts and the like
Inventor: TIPPING CYRIL ROWLAND
IPC: B25B13/06
Filed: 1959-01-28
Abstract: 935,753. Spanners. C. R. TIPPING & CO. Ltd. Jan. 5, 1960 [Jan. 28, 1959], No. 3020/59. Class 61. A socket for use in manipulating nuts, bolts, screws, and the like, comprises a body wherein each end is adapted to accommodate a nut, bolt head or the like, the body having an axial straight line or parallel-walled bore extending between the recessed ends for accommodating and coacting with a driving or manipulating tool. As shown, each end of the socket body 1 has a recess 2, 3 respectively adapted to receive a nut &c. The internal walls of the respective recesses are in the form of serrations or teeth. Alternatively, the recesses may be square or hexagonal in cross-section. The portion between the recesses 2, 3 is provided with an axial opening 4 of hexagonal, triangular, square or other cross-section. In a modification, one end of the socket body has a reduced end in which is formed a much smaller nut-receiving recess. In another modification, the reduced end of the socket has an hexagonal external shape to coact with an appropriately-shaped recess in a screw head.
Patent GB-433755-A (GB)
Title: Improvements in photographic objectives of wide aperture
IPC: G02B13/00
Filed: 1935-01-30
Abstract: 433,755. Lenses. SOC. D'OPTIQUE ET DE MECANIQUE DE HAUTE PRECISION, 125, Boulevard Davout, Paris. Jan. 30, 1935, No. 3087. Convention date, Oct. 10, 1934. [Class 97 (i)] A photographic objective of wide aperture corrected for spherical and chromatic aberrations, astigmatism, and coma, consists of five components separated by air spaces, two being in front of the diaphragm and comprising a convergent lens a and a compound divergent meniscus b, c with its concave surface to the rear, and the other three comprising a compound divergent meniscus d e with its concave surface to the front, a divergent lens f, and a convergent lens g. The lens f is a meniscus and the lens g is bi-convex, and the surfaces of these lenses which face each other have slightly different radii and are utilized for the correction of residual aberrations. Data are given.
Patent GB-1514945-A (GB)
Title: Extendible core rod
IPC: B29C49/36
Filed: 1975-05-13
Abstract: 1514945 Injection blow moulding NATIONAL CAN CORP 13 May 1975 [13 May 1974] 3087/78 Divided out of 1514944 Heading B5A In an injection blow moulding process the parison is formed on a porous metal tubular core pin member 58 extending from a rod 56 slidable in the bore of a body member 72, 74 to stretch the parison. Within the pin member 58 is an externally threaded support member 60. Expansion of the parison is effected by compressed air passing through the conduit 70 and orifices 68, Fig. 5.
Patent GB-870918-A (GB)
Title: Improvements in or relating to cylindrical electrical condensers
IPC: H01G2/10
Filed: 1958-01-30
Abstract: 870,918. Capacitors. TELEGRAPH CONDENSER CO. Ltd., and SPORING, P. A. Jan. 16, 1959 [Jan. 30, 1958], No. 3096/58. Drawings to Specification. Class 37. In a capacitor of the type having a cylindrical casing of insulating material closed at one or each end by a metal disc and having a connecting lead riveted to the disc, to avoid leakage due to the use of a separate rivet, the rivet and disc are made from a single piece of metal.
Patent GB-640565-A (GB)
Title: Improvements in carbon black
IPC: C09C1/58
Filed: 1947-02-01
Abstract: Carbon black is uniformly wetted with 1/2 to about 1 1/2 times its dry weight of water to produce a loamy mass of such consistency that it will not flow under its own weight but will cohere when pressed, then subjected to shearing forces under pressure, e.g. by mixing in a dough mixer, milling, extruding, or forcing through a fine mesh screen or meat grinder, of such duration that the compressibility (the percentage reduction in height of a sample of pellets when subjected to 125 lbs. per sq. inch pressure) of the dried pellets produced is less than 30-35 per cent, and finally pelleted by known methods such as by agitation or impact action of the type described in U.S.A. Reissue Specification 21,379.  The carbon black may be predensed and the ratio of water to carbon black is usually adjusted by addition or evaporation to 1:1, after the preliminary treatment, for efficient pelleting.  The finished pellets may be oven dried.
Patent GB-1103094-A (GB)
Title: 3,4-cis-4-aryl-isoflavans and preparation thereof
IPC: C07F9/655
Filed: 1967-01-20
Abstract: Novel compounds of the formula <FORM:1103094/C2/1> where R1 is H or an alkyl containing 1-3 C atoms, R2 and R3, which may be the same or different, are H, OH, alkoxy or acyloxy containing 1-6 C atoms, -O-(CH2)n-NR4R5, -OSO3H, -OPO3H2, or OCH2COZ, R4 an R5 are each an alkyl containing 1-4 C atoms or, together with the nitrogen atom to which they are attached, form a 5- or 6-membered ring, X and Y are H or F, Z is OH, an alkoxy containing 1-6 C atoms, -NH2 or an alkylated amino group which contains 1-6 C atoms or which may form part of a heterocyclic ring and n is 2 or 3, are prepared by hydrogenating the corresponding 3-isoflavene derivatives.  Therapeutic compositions, suitable for parenteral, enteral, or topical application, contain the above novel compounds or their physiologically acceptable acid addition metal, ammonium, or quaternary ammonium salts as the active ingredient. The compositions have a good antifertility action and some of them also have oestrogenic or anti-oestrogenic, gonadotropin-inhibiting, ovulation-stimulating or hypocholesterolaemic properties.
Patent GB-845979-A (GB)
Title: Improvements relating to sprayer units and stands
IPC: B05B15/654
Filed: 1955-05-02
Abstract: 845,979. Ash trays, fumigating &c. SHARMA, D.N. Aug. 1, 1956 [May 2, 1955], No. 3187/60. Divided out of 843,931. Classes 81(1) and 130 [Also in Groups XXVIII and XXIX] In a sprayer unit (e.g. for liquid or liquid-borne solids) and stand the sprayer unit 1, Fig. 1, is removably mounted upon the stand 4 which is adjustably mounted on a universal. joint. The sprayer 1 in the form of a model aeroplane or rocket, is mounted by a ball and socket or Hooke's joint on a plihth 19, Fig. 2, which has a recess 16 for an ash tray drawer or cigarette drawer. The sprayer unit 1 may have an inner resilient bag the contents of which are ejected through nozzle 5 via the feeder tube 3 when a button 6 is pressed on to the bag. In another embodiment a bottle of inert gas or compressed air is fitted within the sprayer 1, the bottle being pierced by a piercing cap, mounted in the sprayer, to provide pressure for spraying.
Patent GB-756847-A (GB)
Title: Improvements in or relating to the production of photo-mechanical printing plates
IPC: G03F1/00
Filed: 1953-02-04
Abstract: 756,847. Photomechanical printing plates. COLES, D. H. March 25, 1954 [Feb. 4, 1953], No. 3194/53. Addition to 730,639. Class 98 (2). In the method of the main invention in which an image is produced non-photographically on the face of the tissue of a sheet of duplex paper having such tissue removably secured to a heavier backing sheet, the tissue is fixed to the face of a carrier sheet, the backing sheet is removed, the tissue is placed in contact with a light-sensitized plate, exposure is effected through the carrier and the tissue and after removal thereof the plate is processed to form a printing plate; thus avoiding the need for producing a laterally reversed image in the first instance and avoiding the need for a camera and dark room, the original image or part thereof on the tissue is produced by a typewriter, justifying typewriter, or typesetting machine. In the case of machines which operate with a " one-time " paper ribbon, the ribbon may have a greasy or adhesive surface and an opaque dusting powder may be applied to the tissue after the image has been typed thereon. Specification 756,920 is referred to.
Patent GB-990828-A (GB)
Title: Improvements in or relating to skirts for attachment to air cushion vehicles
Inventor: COOPER DAVID HENRY D OYLY
IPC: B60V1/16
Filed: 1962-01-29
Abstract: 990,828. Air cushion vehicles. DUNLOP RUBBER CO. Ltd. Jan. 9, 1963 [Jan. 29, 1962], No. 3242/62. Heading B7K. A skirt for attachment to an air cushion vehicle has a plurality of folds, the ridges of which lie substantially parallel to one another, and a plurality of fold-supporting members, said members being laminer in form and of flexible and resilient material, each member being attached to the skirt, extending in a direction parallel to the direction of the ridges of the folds thereof, and being disposed in a plane that is directed in an outboard direction of the skirt, each member being of small thickness relative to its width so that in the assembled and operational state of the skirt on the air cushion vehicle when a deflecting force is applied to the lower portion of the skirt to deflect it inwardly, the lower portion of the member will be twisted relative to the upper portion of the member. An air cushion vehicle 12 has attached thereto at its lower periphery an angle-section moulded rubber member 8 secured by a metal member 13 and bolts 14, the member 8 being slotted on its under-surface to receive the upper ends of reinforcing strips 5 which are bonded to both the member 8 and the planar faces 3 of a corrugated flexible skirt 1 which forms a peripheral extension of the wall of a plenum chamber enclosing the air cushion. It is stated that when encountering an obstacle the lower ends of strips 5 are caused to twist and present their flat surfaces to the obstacle so that the skirt may deflect readily. Other sections for the skirt are described. In one, the ridge portions 4 are separate and bonded to flat connecting portions and in others the reinforcing members are attached at the ridges and lie substantially normal to the general plane of the skirt.
Patent GB-347744-A (GB)
Title: Improvements in and relating to printing-telegraph systems, and the like
IPC: H04L12/06
Filed: 1930-01-31
Abstract: 347,744. Telegraph exchange systems. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. Jan. 31, 1930, No. 3384. Convention date, April 15, 1929. Addition to 342,479. [Class 40 (iii).] Relates to exchange systems of the kind described in the parent Specification in which, when a connection to the called line is completed, a return signal indicating, for example, the name of the called subscriber, operates the type-printer of the calling subscriber. According to the present invention, the " combination contacts" k<1> .. k<5>, which are closed in turn during the normal operation of the transmitter, are connected with the corresponding " combination contacts " d<1> .. d<5> of the return signalling apparatus, the fixed contacts of which are wired according to the code to be transmitted to the calling station. The return signalling apparatus may comprise a rotary selector, as shown, a perforated strip transmitter, or contacts controlled by cams. When the connection is completed, relay E, energized over the line a, b, causes relay Y to switch in the motor M and energize momentarily the magnet D which moves the wipers d<0> .. d<5> of the return signalling switch to their second position. The relay D also causes magnet A to operate the letter-space key BT, whereupon the control spindle rotates once, closing the contacts k<1> .. k<5> in turn, thereby transmitting a code signal corresponding, say, to the first letter of the called subscriber's name, and determined by the wiring of the contacts engaged by the wipers d<1> .. d<5>. As the control spindle completes its cycle, the contact k<o> energizes relay J which causes magnet D to move the wipers d<0> .. d<5> to their third position and again operate the key BT. This process is repeated until the wiper d<0> engages the contact f. The contacts k<1> .. k<5> are set mechanically by the keyboard in normal working of the transmitter, but are all released, when the letterspace key is depressed, so that they can be closed in turn as described above.
Patent GB-196722-A (GB)
Title: Improvements in and relating to the finishing of glass articles
IPC: C03B29/06
Filed: 1922-02-07
Abstract: 196,722. Haddan, R., (Corning Glass Works). Feb. 7, 1922. Moulding by centrifugal force; polishing.-A method of finishing glassware, particularly for flanging and lipping beakers, consists in heating the portion of the article to be finished and rotating the article at such a velocity that the heated portion is forced by centrifugal force to conform to the shape of a former. As shown in Fig. 1, the unfinished beaker A, consisting of a cylindrical blank the upper part of which has been cracked-off, is inserted in mould or form B. This form is mounted on a vertical shaft B<1> carrying a disc B<2> that is rotated by friction from a motor C. The inner surface of the form is flared outwardly at its upper edge and is provided with a V-shaped notch B<3> for shaping the lip of the beaker. The heating-device consists of a shell D of refractory material provided with an open circular cavity D<1>. The tip of the burner D<3> is inserted in an opening D<4> in the shell tangential to the wall of the cavity. The flame swirls around the cavity and passes downwardly into the article A. Corrugations D', formed in the underside of the shell, retard the escape of the hot gases over the edge of the article and radiate heat against the edge. The sharp edge of the article is thus melted and fire polished, and the rotation of the form causes the softened edge to turn outwardly and take the shape of the form. The machine shown in Fig. 6 comprises several forms 16 carried by a frame 8 which can be rotated about a standard 2 by means of handles 9. Friction wheels 18, secured to the spindles of the forms, ride over friction wheels 19 secured to shafts 22, 23, 24 and are driven by them when the frame is stopped at the different operating stations. Burners 36, 37, 38 are situated above the stopping-points of the containers. An horizontal rotatable wheel 34, situated at the station where the flange of the beaker is formed, has a shaped edge which acts as a form to shape the flange when the heated glass is forced outwards by centrifugal force. The lip of the article is formed by a device carried by a pivoted arm 42 that is held upwards by a spring 57. The arm 42 carries a conical shell 44 which enters the mouth of the article, when the arm 42 is depressed by a handle 47, and supports the glass during the formation of the lip. After the shell has entered the article, continued movement of the handle 47 causes a small arm 53, pivoted in a recess in the shell, to move outwards and form the lip, another arm 49 being moved inwards at the same time to support the lip from the outside.
Patent GB-854410-A (GB)
Title: A method for increasing the efficiency of multistage feed-water heating by extractedsteam
IPC: F01K7/42
Filed: 1957-02-01
Abstract: 854,410. Feedwater heating systems. NEKOLNY, J. Feb. 1, 1957 [June 11, 1956], No. 3583/57. Class 64(1) A feedwater heating system for steam turbines comprises a series of condensation heaters 7, 8 9 and 10 in which condensate from the condenser 2 is heated by tapped steam from a turbine 1 and is characterized by the superheated steam from at least one of the extraction points of the turbine being passed through the secondary circuit of a precooler 16 whose primary circuit is fed by the main flow of condensate or by the condensate from one of the condensation heaters. The steam from two extraction points 3, 4 may be passed through the precooler as shown in Fig. 1 or a series of precoolers 16, 17 and 18 may be used as shown in Fig. 2 in which case the steam may pass through two precoolers before being fed to a condensation heater. In a modification, by the provision of additional banks of tubes in the condensation heaters the steam may be further cooled by being passed through these heaters from the precooler. In further modifications the primary circuit of the precooler may be fed by passing either a small quantity of the main flow of condensate through it, or the condensate from one of the condensation heaters.
Patent GB-101658-A (GB)
Title: Improvements in Hooks and Eyes.
Inventor: BAYLISS DAVID
IPC: A44B13/00
Filed: 1916-03-11
Abstract: 101,658. Bayliss, D. March 11, 1916. Hooks and eyes. - In a. fastening of the kind in which the hook is sprang through the eye, the hook is formed as shown, with the tip 14 of the bill bent upwardly.