baber/WOPTO huggingface dataset:
Patent GB-579459-A (GB)
Title: Process for the purification of 4-hydroxycoumarins
Inventor: STAHMANN MARK ARNOLD
IPC: C07D311/46
Filed: 1942-11-23
Abstract: 4-Hydroxycoumarins are purified by forming an aqueous solution of an alkali metal salt of the impure 4-hydroxycoumarin, adding an acid to lower the pH value to a value slightly above the pK value of the 4-hydroxycoumarin and thus low enough to produce a precipitate containing impurities, but high enough to avoid material precipitation of the 4 - hydroxy - coumarin, removing the precipitate so produced and then adding more acid to lower the pH value definitely below the pK value and thus to precipitate the 4-hydroxycoumarin free from the impurities.  If desired, the material so obtained may be further purified by recrystallization p  from water.  Additional 4-hydroxycoumarin may be recovered in the form of 3 , 31-methylenebis (4-hydroxycoumarin) from the mother liquor by treatment with formaldehyde.  Specification 578,589 is referred to.
Patent GB-636494-A (GB)
Title: Improvements in or relating to the purification of sewage and the like
IPC: C02F3/16
Filed: 1947-07-31
Abstract: Apparatus for purifying sewage and the like comprises an aerating tank, a rotary electrically-driven aerating member located in the tank, and a clock-controlled switch in circuit with the drive for the aerating member whereby the member will be caused to rotate for a predetermined period and then be stationary for a predetermined period so that the sewage is subjected to periods of induced aeration with intervening idle periods in cyclic rotation.  The aerating member may be a rotary cone or a rotary brush.  Specifications 166,385, [Class 111], 365,263, 470,873 and 602,130 are referred to.
Patent GB-597282-A (GB)
Title: Improvements in or relating to control means for gyroscopes
IPC: G01C19/44
Filed: 1945-08-13
Abstract: 597,282. Control of A.C. motors; thermal switches. BARNES, J. W. Aug. 13, 1945, No. 20721. [Classes 38(iii) and 38(v)] [Also in Group XX] The supply circuit connections of an electric motor 11 controlling the erection or precession of a gyroscope, are temporarily altered by a manual control 28, actuation of which simultaneously adjusts a switch to modify the motor supply connections and sets a delayed-action device which operates subsequently to return the switch to its initial condition and so restore normal supply to the motor. As shown, the motor is normally energised over a resistance 18 and through a two-way mercury switch 12 carried by a gymbol ring of the gyroscope, and the action of control 28 is to short-circuit the resistance and so accelerate the motor. The switch actuated by control 28 may comprise a fixed contact 24, a movable contact 19 and a contact 25 carried by a bimetallic strip 26 having a heater 20 and associated with further bimetallic strip 30 for ambient temperature correction. Contact 19 is carried by a bowed spring 27 and normally engages contact 24, thereby short-circuiting heater 20. When acceleration of the motor is required the spring is moved over its dead centre by control 28, so that contacts 19, 25 engage and short circuit resistance 18. Heater 26 becomes energised from lines 15, 17 through power factor correction condenser 21 and the consequent flexing of strip 26 eventually moves the spring 27 over dead-centre and restores initial connections.
Patent GB-1492337-A (GB)
Title: Process for making succinic acid acylating agents
IPC: C08F8/10
Filed: 1976-05-19
Abstract: 1492337 Polyolefin derivatives LUBRIZOL CORP 19 May 1976 [29 May 1975] 20756/76 Heading C3P Polymers of C 2-7  olefins are reacted with an acidic reactant selected from maleic anhydride, itaconic anhydride, maleic acid, fumaric acid, itaconic acid or an acyl bromide, acyl chloride or C 1-7  alkyl ester of one of said acids, in the presence of chlorine in a total amount of 0À4-0À9 mole per mole of acidic reactant, the process including the steps of heating an initial mixture of polymer and acidic reactant to at least 100‹ C., introducing chlorine into the heated mixture, and then increasing the temperature to at least 190‹ C. In examples, polyisobutylene is reacted with maleic anhydride.
Patent GB-911065-A (GB)
Title: Polymeric compositions
IPC: C08K5/42
Filed: 1961-06-08
Abstract: A crystalline polyolefin such as polypropylene, is stabilized with an organic compound R-SO2-O-R1 wherein R and R1 are aryl groups which may be substituted with alkyl, alkoxy, acyl, hydroxy or -OSO2C6H5 radicals. Specified stabilizers are 3-hydroxy-phenyl ester of benzenesulphonic acid, phenyl ester of alpha naphthalene sulphonic acid and hydroquinone dibenzenesulphonate.  Calcium stearate may be included as an antiacid agent.  The compositions, which may be formed with or without the aid of a solvent, may be made into filaments, fibres or film.  Specification 828,791 is referred to.
Patent GB-202498-A (GB)
Title: Non-slipping shoe for horses and other cattle
IPC: A01L7/06
Filed: 1922-07-29
Abstract: 202,498. Hutchesson, T. H. July 29, 1922. Renewable calks a n d treads.-Resilient heel and toe pads h are carried in metal plates a having downwardly directed flanges f which engage in slots in the pads, and upstanding flanges e which embrace the shoe. The devices are secured to the shoe by screws passing upwards through them.
Patent GB-202823-A (GB)
Title: Machine for counting paper sheets, envelopes, and other flexible sheet articles
IPC: G06M7/08
Filed: 1922-07-29
Abstract: 202,823. Burdick, C. L. July 29, 1922. Counters for articles.-A machine in which flexible sheets are counted by being passed through two pairs of rollers rotating at different speeds whereby the sheets are tensioned and a member lying out of the direct path of the sheet is moved to actuate an indicator, comprises means for preventing more than one sheet being fed at a time, and means for stopping the feed when a predetermined number of sheets has passed through. Sheets are fed from a receptacle 2, by a feed roll 4 with circumferential projections 4<b> working in slots in a bottom plate 9, under a roll 36 to receiving rollers 7, 8 on shafts 7<a>, 8a, and delivery rollers 12, 13 the latter pair of which have a quicker rotation than the former, whereby the sheet is tensioned. A pivoted bar 10 lying in the path of the sheet is swung on a pin 10<a> and through an attached pawl 15 actuates a shaft 16<a> connected to a counter 17. For stopping the feed at a predetermined number the shaft 16<a> carries a gear meshing with a gear 19, on a shaft 19<b>, this gear 19 carrying one or more frictionally-held pivoted lugs 20<a> which, in the active position, trip a lever 22 pivoted on a pin 22<a> to disengage a spring-pressed friction gear 24 and break the driving train. For preventing more than one sheet at a time from being fed, a frame 5 pivoted on the shaft 8<a> carries a roller 36 having a retrograde motion. The frame is lowered by a cam 40, when the feed projections 4b are inactive, to an extent allowing the passage of one sheet only; should more than one sheet be under the roller, the excess is fed back into the receptacle 2. The machine may be driven by power or from a handle 30 driving through the friction gear 24 and ordinary gearing to the feed roll 4 and the roller 36, the roller 7 being freely mounted. A roll of gummed strip 40<b> may be provided for wrapping the counted sheets.
Patent GB-959070-A (GB)
Title: Photographic exposure apparatus
Inventor: CLAPP ROY ARTHUR
IPC: G03B27/73
Filed: 1962-05-30
Abstract: 959,070. Pulse generating circuits. PAKA CORPORATION. May 30, 1962, No. 20884/62. Heading H3P. [Also in Divisions G1 and G2] A pulse generator having a frequency dependent upon the current through a photocell comprises two triodes 54, 64. Triode 64 is normally conductive and the D.C. potentials in the circuit are such that a negative bias is applied to the grid 58 of triode 54. The current through the photo-cell 42 charges a condenser 52 until the triode 54 conducts, thus applying a negative pulse to a counter 80 and to the grid 68 to cut-off triode 68. The potential on anode 66 and grid 58 rises to increase conduction in the triode 54 which continues until the condenser voltage falls to a predetermined level at which the circuit switches back to its original condition and photo-cell 42 commences to recharge condenser 52.
Patent GB-665787-A (GB)
Title: Improvements relating to electrical condensers and other electrical devices
IPC: H01G4/228
Filed: 1949-08-11
Abstract: 665,787. Electric condensers; mounting terminals; carrying conductors through partitions. ALSTON, B. Nov. 1, 1950 [Aug. 11, 1949], No. 20894/49. Classes 36, 37 and 38 (i). An electrical device 1, Fig. 1, e.g. a condenser or a switch, is enclosed in a casing 4 of synthetic resin, the lead wires 2 having a thread or tape 3 of rubber-like material wound round them in a series of layers and embedded in the casing, so that expansion of the casing due to heat results in the coil 3 unwinding to take up the space caused by the expansion and maintain the sealing. The thread may be wound as shown in Fig. 2.
Patent GB-348454-A (GB)
Title: Improvements in apparatus for intravenous injection
IPC: A61M5/142
Filed: 1930-07-10
Abstract: 348,454. Surgical syringes &c. KœNSZTLER, M., 3, V. GÚza Utca, Budapest. July 10, 1930, No. 20906. [Class 81 (ii).] A hypodermic syringe 2 of the kind having an unperforated piston is adapted for the injection of a large quantity of liquid by the provision of a lateral tube 4, on the needle cap 1, opening into the delivery passage 3a leading to the needle 11. The tube 4 is provided with a cock 5 and a spigot 6 permitting connection by flexible tubing with a reservoir of injection medium which may comprise a graduated vessel, a bottle under air pressure produced by a rubber bulb, or a large syringe. In use injection liquid is allowed to flow from the reservoir &c. into the needle 11 to fill the connecting tubes: the flow is then stopped, and a physiologically inert liquid drawn into and expelled from the syringe to displace the injection medium in the needle. Finally the needle is inserted into the vein and the injection fluid allowed to flow in under hydrostatic or other pressure. The cock 5 may be replaced by a clip on the flexible connecting tube or by a three-way cook in the part 1 controlling both the lateral and delivery passages. The portion 3a may be axially or eccentrically disposed and may be straight or curved. The portion 6 may comprise a tapered socket adapted to receive a tapered spigot or other connecting piece secured to the flexible tube. The syringe may be used as an ordinary hypodermic syringe.
Patent GB-678066-A (GB)
Title: Improvements in and relating to universal joints
IPC: F16D3/24
Filed: 1950-08-24
Abstract: 678,066. Universal joints. WINGQUIST, S. G. Aug. 24, 1950 [Sept. 13, 1949], No. 20944/50. Class 80 (ii). In a constant velocity ratio universal joint resisting both pulling and pushing forces, driving and driven members 1a, 2a have arms 3a within which is a part-spherical roller holder 7a receiving rollers 5a; the rollers lie between races on the arms 3a. The outer ends of the rollers 5a are mounted in a groove 14a in a bisecting member 12a having cylindrical surfaces 13a co-operating with spherical surfaces 10a on the driving and driven members 1a, 2a. The centres of curvature 11a of the spherical surfaces 10a lie on the main axis of the joint, but separate and at equal distances from the centre of deflection o. The joint is assembled by passing the arms 3a through grooves 15 in the roller holder 7a, and rotating the parts relative to each other. Grooves 17 on the rollers 5a, are engaged by pins 16 which prevent the rollers from moving radially and the roller holder 7a from turning relatively to the driving and driven members. In one modification employing four rollers, Figs. 5 and 6, not shown, two of the rollers are joined by a rigid connecting member with which the other two rollers co-operate, while the outer ends of the rollers are received in a sheet steel bisecting ring. In another similar modification, Figs. 7 and 8, not shown, the two separate rollers have partspherical ends co-operating with a spherical recess in the driving and driven members and with a bulge on the member connecting the other two rollers, the rollers being supported by a cage to facilitate assembly. In still another modification, a joint which resists pushing forces only, employs a spherical roller holder having radial grooves within which the rollers fit. In any embodiment the rollers may have other forms, e.g. be of conical shape, or the roller holder may be flattened at the ends or made in two parts, etc. to facilitate assembly, or the bisecting member may have two cylindrical surfaces of different radii so that the spherical surfaces with which it co-operates may also be of differing radii.
Patent GB-302199-A (GB)
Title: Improvements in, and relating to, acoustical horns
IPC: G10K11/02
Filed: 1927-08-09
Abstract: 302,199. Owen, R. E. Lloyd-, and Watson, T. Aug. 9, 1927. Sound magnifying and directing appliances.-A horn is designed so that the percentage increase in bore area per unit length, instead of being constant, as in the case of the exponential horn, increases progressively along the axis. It may, for example, increase by a constant proportion per successive unit length.
Patent GB-801098-A (GB)
Title: Expellent baldder type liquid cell
IPC: B64D37/06
Filed: 1955-07-20
Abstract: 801,098. Discharging liquid by diaphragm apparatus. GOODYEAR TIRE & RUBBER CO. July 20, 1955 [Oct. 18, 1954], No. 20987/55. Class 102(2). [Also in Group XXIX] In a tank for liquids, particularly a fuel tank for aircraft, of the diaphragm type (shown in a phantom view in Fig. 2 and in section in Fig. 4) in which air or inert gas supplied at 70a to a pressure cell 42 on one side of diaphragm 36 expels liquid from the fuel cell 20, the side wall 34 of the cell 20 has means for preventing the formation of trapped pockets of liquid in the form of apertured half tubes 60 running from end to end of the fuel cell and secured to the wall 34 by strips 66 (shown partly broken away in Fig. 2) dispased between the apertures 62. These tubes 60 allow free passage of liquid to and from fuel outlet 68a and inlet 69a ; further tubes may be provided on the end walls as is shown for end wall 28. A modification is described and illustrated in which the tank is built from two separate and complete cells detachably laced together so that a doublewalled diaphragm is formed by the flexible walls in contact. The cells are preferably constructed of fabric impregnated with neoprene or like synthetic rubber compound, and reinforcing members 38 and 40 carrying attachment clips 71a may be of the same product as, although thicker than, the tank walls.
Patent GB-834574-A (GB)
Title: Valve
Inventor: COLLINS JOHN ELDRIDGE
IPC: F16K31/126
Filed: 1956-07-06
Abstract: 834,574. Valves. INTERNATIONAL BASIC ECONOMY CORPORATION. July 6, 1956, No. 21018/56. Class 135. A fluid-actuated two-, three-, or four-way valve has a valve member 36, with coned seats 30, 40 for engagement, e.g. with fixed seatings 32, 38, controlling communication between an inlet 18 and two outlets 20, 22 in the case of a three-way valve, and the valve-member 36 is carried on a stem 34 which projects outside the valve housing through a packed gland 44 and guide-plate 58, to be connected to a diaphragmactuated piston 68 through a self-aligning extension comprising a rod 74 screwed to an adaptor 94, which latter has a ball-and-socket connection 95 with the piston 68, relative rotation therebetween being prevented by ribs 98 on the ball engaging grooves in the socket. Such ribbed connection permits the adaptor 94 and piston 68 to be screwed as an assembly on to the rod 74 after the latter has been attached to the valve stem 34 by a further ball-and-socket connection 79, the screw connection being then locked by a nut 100, reached through a screw-plugged hole 104 in the piston 68. Fluid pressure applied at 72 to a diaphragm 64 depresses the valve 36 on to the lower seating 32, in opposition to a helical spring 59 surrounding the extension 94, and raising the valve on to its upper seating 38. The lower valve seating 32 is attached to the housing by a screwed flanged ring C, which applied pressure to lapped sealing faces 109 which prevent access to the screw thread of any solidified chemical material which may accumulate in a cylindrical clearance 108 which is made too wide to be bridged by such material which cannot therefore interfere with removal of either the screwed ring or the seating.
Patent GB-597436-A (GB)
Title: Improvements in or relating to the manufacture of detachable drill bits
IPC: B21K5/06
Filed: 1945-08-17
Abstract: 597,436. Making percussive drills. INGERSOLL-RAND CO., and DICKENSON, E. H. Aug. 17. 1945, No. 31091. [Class 83 (ii)] A method of manufacturing detachable drill bits from a metal bar comprises forming a number of groups of cutting teeth along one face of the bar, forming recesses in two opposed sides of the bar to define buttress portions on the bar for the cutting-teeth and cutting the bar between adjacent groups of teeth and in the transverse planes of the recesses for dividing the bar into drill bits. A bar 20 is rolled or forged to the form shown in Fig. 4, having a central longitudinal V-shaped rib 21 providing a cutting-edge 24 and a number of uniformly spaced lateral V-shaped ribs 25 providing cutting edges 28 on each side of the edge 24. The rear side 30 of the bar is drilled and tapped at points 32 located at the points of intersection of the edges 24 and 28 to receive the shariks or rods of the bits. The upper portions of the sides 31 of the bar are inwardly inclined. Recesses 33 are now cut in the sides of the bar between the ribs 25, as with a gang of milling- cutters, and the ends of the laterally extending ribs are given the required shape at 39. The bridge portions 34 between the adjacent drill bits are slotted at 40 to leave links 41 which may be readily broken to separate the bits, but which have sufficient strength to retain the bits in bar form for the final operations such as grinding the cutting-edges and heat treatment and for convenience in packing and transport.
Patent GB-839190-A (GB)
Title: Separation of plutonium
IPC: G21C19/46
Filed: 1945-08-17
Abstract: 839,190. Separation of plutonium. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Aug. 17, 1945 [Aug. 18, 1944], No. 21109/45. Drawings to Specification. Class 39(4). Plutonium in its reduced state is adsorbed from solution on to zirconium phosphate or barium iodate. Zirconium phosphate may be supported on glass wool, silica, or powdered glass. The solution preferably contains mineral acids, for example nitric or hydrochloric acid mixed with phosphoric acid. The solution may be passed through a column of the adsorbent, fission products washed out with a mixture of nitric and phosphoric acids, and then the plutonium dissolved using 7N nitric acid. In the separation of plutonium from neutron irradiated uranium, the greater part of the uranium is preferably removed before the adsorption of the plutonium. The Specification as open to inspection under Sect. 91 refers also to the use of aluminium, titanium, and zirconium zeolites as adsorbents. This subject-matter does not appear in the Specification as accepted.
Patent GB-715046-A (GB)
Title: Improvements in or relating to galley printing presses
IPC: B41F3/46
Filed: 1951-09-07
Abstract: 715,046. Printing processes. GARRETT, E. July 17, 1952 [Sept. 7, 1951; Oct. 15, 1951], Nos. 21120/51 and 23983/51. Class 100 (2) Cylinder machines.-A galley press on which a roller 5 is provided solely for applying the pressure to the back of the paper or other material on which the impression is made during relative movement between the axis of the roller 5 and the face of the forme 6 is provided with a pair of flexible bands or tapes 9 for holding the paper or other material away from the forme 6 except along the line in which the pressure is applied by the roller 5. The galley press has a base plate 1 provided with runners 2 between which run rollers on the end plates 3 of the roller-supporting carriage. A spacing rod 7 is provided with rollers 8 over which run the tapes 9. The tapes are provided at one end with a loop through which passes a bar 10 secured to brackets 11. The other ends of the tapes are buckled around a rod 13 supported on brackets 14. The tapes guide the paper round the roller 5 and away from the forme 6 after printing. A platform 16 constructed of a transparent synthetic resin is hingedly supported on brackets 20 clamped to the side plates 3, the paper being fed over the platform 16 to the roller 5. The platform may be provided with engraved lines for multi-colour work, and may be slotted in one or more places and gauges fitted to act as side-lay and back-lay.
Patent GB-836861-A (GB)
Title: Improvements in or relating to pressure relief valves
IPC: F16K17/04
Filed: 1958-07-02
Abstract: 836,861. Force-feed lubricating. FORD MOTOR CO. Ltd. July 2, 1958 [July 2, 1957], No. 21157/58. Class 12 (3). [Also in Group XXIX] After a control pressure at 40 has been set to act on the end 26 of piston valve 18 against spring 28, pump 10 delivers pressure fluid at 14 past check valve 36 and through a line 34. When the set line pressure is reached it acts via a passage 38 on a differential area 24 of piston valve 18 and lifts it to allow oil to flow from line 34 to a lubricating line 42 and a torque converter line 44. On further pressure increase in lines 34, 42 and 44, valve 18 is raised still further by the pressure acting on area 24 so that land 20 opens communication between pump delivery line 14 and the sump passage 46. On further increase in pressure valve 18 moves higher so that land 22 opens direct communication between passages 34 and 46.