baber/WOPTO huggingface dataset:
Patent GB-507162-A (GB)
Title: Improvements in or relating to fluid-pressure apparatus for controlling the operation of brakes for aircraft
IPC: B64C25/44
Filed: 1937-12-10
Abstract: 507,162. Fluid-pressure brakes. DUNLOP RUBBER CO., Ltd., BEHA.RRELL, G. E., WRIGHT, J., and TREVASKIS, H. Dec. 10, 1937, No. 34176. [Class 103 (i)] [Also in Group XXXIII] Aircraft hydraulic brakes are controlled by mechanism comprising a floating lever 18 adapted to close an exhaust valve member 21, to fulcrum thereon and thus open the inlet valve 12 by means of a spindle 17 which is pivoted to the lever by a pin 32 nearer the pivot of the actuating rod 19 than the pivot of the exhaust member 21. Two of these mechanisms are combined to form a unit controlling the brakes on opposite sides of an aircraft and are controlled differentially for steering. The brake cylinder is connected to an orifice 16. The exhaust orifice is contained in a plunger 23 adapted to be depressed against a spring 24 by the pressure admitted by the inlet valve 12 to the brakes by the orifice 16. The depression of the plunger 23 allows the valve 12 to be reclosed by the lever 18 and a definite pressure to be maintained at each stage of braking. The pin 32 on the lever 18 normally rests on a cradle 33 from which it is lifted when the brake is applied. Each lever 18 is operated by a rod 19 a lever 29, Fig. 2, a rod 48 and a link 34 connected to an operating cable 36. Each link 34 is provided with an extension carrying a roller 37 engaging a cam surface 38 in a cradle-shaped member 40 pivoted to the casing at 41 and carrying a roller 44 engaging a cam 45. The cam shaft 46 is adapted to be rotated due to operation of the rudder in order to produce differential operation of the brakes. The angle of one cam surface 38 being rendered steeper and the other less steep, the steeper the angle the less the movement of the roller on it and the greater the movement of the brake operating gear and consequent brake application. The liquid pressure is supplied by a constant running pump. In a modification which allows fluid at full pressure to flow to the brakes, the valve chamber is divided by a partition into two parts, one part containing the inlet valve 12 and the outlet pipe 16 and the other part the exhaust valve. The pipe connecting the pipe 16 to the brakes is connected to this latter chamber. In this way liquid at full pressure flows to the brakes and eventually this liquid reaches the exhaust valve chamber and recloses the inlet valve.
Patent GB-943095-A (GB)
Title: Improvements in or relating to packing devices
IPC: B65D37/00
Filed: 1960-10-06
Abstract: 943,095. Boxes; packaging. E. PUETZ. Oct. 6, 1960 [Oct. 7, 1959], No. 34237/60. Headings B8C and B8P. A packaging container is formed from three or more flexible skins, one inside another, and valve means for filling the spaces between adjacent skins with gaseous, liquid or powdery substances. In Fig. 2, the container, e.g. for an instrument, comprises four rubber or plastics skins 1a . . . 1d with spaces 4 ... 6 adapted to be inflated through a single valve 7 or separate valves. The skins may be of increasing rigidity from inside to outside and the spaces 4 ... 6 may be filled with the same or different substances, e.g. spaces 4, 5, 6 may be filled respectively, with air, liquid and powder. The top 1<SP>1</SP> of the container may be fastened by a zipfastener 2; alternatively, the top may have projections 11a which are fitted between corresponding projections 11b on the walls when the walls are partly inflated, the completion of inflation ensuring a tight seal between the projections. The outermost skin may be reinforced by glass fibre or metal mesh. A recess 9 in the top 11 may be covered with transparent material.
Patent GB-1077414-A (GB)
Title: Combined compressor and expansion engine
Inventor: CLARKE MICHAEL EDWARD
IPC: F25B1/00
Filed: 1964-08-21
Abstract: 1,077,414. Refrigerating. BRITISH OXYGEN CO. Ltd. Aug. 6, 1965 [Aug. 21, 1964], No. 34274/64. Heading F4H. [Also in Division F1] A combined compressor and expansion engine for a refrigeration system employing nitrogen gas as the working fluid comprises a doubleended piston (4) automatically reciprocable in a tubular member (1) to expand gas in an expansion cylinder below the piston and to compress gas in a compression cylinder above the piston. The tubular member (1) has circumferentially spaced ports (10) for gas to be compressed, outlet ports (11) for the compressed gas, inlet ports (12) for gas to be expanded and outlet ports (13) for the expanded gas. Each set of ports (10-13) communicates through respective coaxial sealed annular chambers (18-21) with conduits (25-28) connected to the refrigeration system. In operation the gas to be expanded enters ports (12) and flows through radial and longitudinal passages (30, 32) in the piston to the expansion cylinder whereby the piston (4) is moved to compress gas in the compression cylinder. When a radial passage in the piston registers with the outlet ports (11), compressed gas is exhausted therethrough and simultaneously the expanded gas flows from the expansion cylinder through the ports (13). The release of the expanded gas allows the residual gas pressure in the compression cylinder to return the piston. A second compressor may be connected in parallel or series with the compression cylinder which may be insulated from the expansion cylinder. Insulation may also be provided between each end of the piston.
Patent GB-1401882-A (GB)
Title: Flexible pipe coupling
IPC: F16L27/10
Filed: 1972-07-24
Abstract: 1401882 Pipe couplings METZELER AG 24 July 1972 [24 July 1971] 34491/72 Heading F2G In a flexible pipe coupling, e.g. for a compressed air line in a central buffer railway coupling, a bi-conical spigot 20 is held in a rubber sleeve 27, which is compressed between an entire ring 29 and a segmented ring 28. The parts 20, 27, 28 and 29 may be bonded together by vulcanization or cementing and the assembly so formed is retained in socket 14, by projections 30 engaging groove 16.
Patent GB-1533751-A (GB)
Title: Electronic watch construction
IPC: G04G17/02
Filed: 1976-08-18
Abstract: 1533751 Electronic watches HUGHES AIRCRAFT CO 18 Aug 1976 [2 Sept 1975] 34496/76 Heading G3T In an electronic watch comprising a spacer block 16 with at least one compartment 26 containing a battery, and a (ceramic) substrate 18 with electronic components on its front face protected by a cover 24, the cover has a number of resilient portions such as that shown at 98 and engaging a surface 102 of watch case 12 to provide a resilient mounting for the substrate. As described the spacer 16 contains two batteries which are pressed against the rear face of the substrate by springs 80 which permit resilient movement of the substrate and spacer in the rearward direction. (The watch case is shown along a different section line from the spacer etc.). The spacer also has recesses for the resilient mounting of a crystal oscillator (40), Fig. 4 (not shown) and for a trimmer. The spacer and cover 24 are of polycarbonate, the cover having a clear or red window 104 over LED display 22 and the space 86 enclosed beneath the cover being filled with dry nitrogen.
Patent GB-487241-A (GB)
Title: Cathode ray tubes for intensity-controlled illumination
IPC: H01J29/89
Filed: 1936-12-16
Abstract: 487,241. Cathode-ray tubes. RADIOAKT.-GES. D. S. LOEWE. Dec. 16, 1936, No. 34578. Convention date, Dec. 17, 1935. [Class 39 (i)] In a cathode-ray tube for use in a television system wherein the large emissive surface of a cathode 2 is focused on to a fluorescent screen 8 to give an optical image, the whole of the light is projected back from the screen to a reflector 7 within the tube 1, the reflector projecting- preferably by parallel rays-the light out of the tube to a suitable mirror or lens 9. The reflector may be spherical or parabolic in shape and the orifice therein for the passage of the cathode ray is made as small as possible without interfering with the ray. The screen 8 may be at the same potential as an accelerating anode 6 or at a higher potential than this anode. The reflector may produce a concentrating field for the ray. Arrangements such as described in Specifications 420,667 and 457,846 may be used to focus the cathode surface on the screen. Specification 452,148 also is referred to.
Patent GB-494214-A (GB)
Title: Improvements in the treatment of organic acid anhydrides
IPC: C07C51/573
Filed: 1937-12-15
Abstract: Aliphatic acid anhydrides are freed from sulphur and labile organo-sulphur compounds by treating with a hypochlorite.  The anhydride may be stirred with the hypochlorite and left in contact therewith for some time, decanted, and distilled with sodium acetate. In examples, calcium hypochlorite (bleaching powder having 68 per cent available chlorine) is used.  The mixture of anhydride and sodium acetate is heated to about 132 DEG  C. cooled, and distilled under vacuum.  Specification 100,450, [Class 2 (iii)], is referred to.
Patent GB-846213-A (GB)
Title: Improvements in or relating to a machine for levelling and surfacing concrete compositions laid to form floors or sub-bases
IPC: E04F21/24
Filed: 1958-10-30
Abstract: 846,213. Concrete levelling. BYGGMEKANISERING A. B. Oct. 30, 1958 [Nov. 4, 1957], No. 34780/58. Class 107. A machine for levelling and surfacing concrete composition laid out to form floors or sub-bases, comprises a central, flat-faced, rotary working member 6 and a plurality of further working members 7 extending radially from the central working member, each further working member having a single operating surface that is transversely oblique to bring the portion 19 of its surface bordering its trailing edge substantially into the plane of the flat face of the central working member along at least the innermost portion of that edge when the machine rests on the surface to be worked, the remainder of that surface being at a higher level than that plane. Each further working member is mounted for angular movement on a shaft 11 capable of turning in a bearing 12 attached to the upper face of the member 6. Each member 7 is biased in the required transversely oblique position by a spring 16 connected between the upper surface of member 6 and the outer end of an arm 13 attached to the shaft 11. The radial dimensions of the member 6 and the members 7 are preferably approximately equal.
Patent GB-1193279-A (GB)
Title: Filament Wound Tank
Inventor: PFLEDERER FRED RAYMOND
IPC: F17C1/16
Filed: 1967-07-28
Abstract: 1,193,279. Filament-wound vessel. A. O. SMITH CORP. 28 July, 1967 [28 July, 1966], No. 34907/67. Heading B1X. A filament wound vessel comprises cylindrical wall section 1 having a hoop to axial stress ratio in the range 5:1 to 8:1 and composed of a helically wound fibrous strand bonded with a thermo-setting resin, head 2 connected to one end of the cylindrical wall section, annular head section 3 connected to the opposite end of the wall section, member 5 disposed within the opening in head section 3, and having an area of at least 50% of the crosssectional area of the cylindrical wall section, flexible sealing means 9 for sealing the space between member 5 and head section 3 while allowing relative movement between them, and rigid connecting means 4 secured between head 2 and member 5. The diameter of member 5 may be between 70% and 87% of the diameter of the cylindrical wall. A single tie rod 4 may be used or a plurality of rods inside or outside the vessel. The fibrous strand material may be mineral, synthetic, vegetable, animal or metal fibres, or may be woven fabric or braiding; examples are given. The resin may be an epoxy, polyester or urea-formaldehyde resin. The filaments are preferably wound at a helix angle of from 24 to 19¢ with respect to a transverse plane.
Patent GB-430247-A (GB)
Title: Electric potential derivation arrangements
IPC: G05F1/33
Filed: 1933-12-12
Abstract: 430,247. Automatic regulation; charging and discharging batteries. SIEMENS BROS. & CO., Ltd., Caxton House, Tothill Street, and DOUBLE, H. S., 173, Greenvale Road, Eltham, both in London. Dec. 12, 1933, Nos. 34953/33 and 15285/34. Addition to 388,772. [Classes 38 (ii) and 38 (iv)] Additional magnetizing windings on the chokes used for regulating the D.C. output in the parent Specification are supplied with current from a bridge having in at least one arm a resistance with a variable voltage - current characteristic, the bridge being responsive either to the D.C. output or to rectified current from the A.C. supply. Additional resistances controlled by a clock may be inserted into the bridge to modify its controlling effect and it may operate a relay responsive to the state of charge of batteries. A bridge of this type may also be used to control switching means for changing over batteries or to operate an alarm. The charging system as described in the parent Specification and shown in Fig. 1 includes a regulating choke CHA, CHB with windings in one of the A.C. supply mains and also in one of the D.C. supply leads. The terminals T1, T2 of additional magnetizing windings are supplied with out of balance current from the terminals T3, T4 of a bridge which is supplied with D.C. either from the output leads T11, T12 or from the A.C. supply mains through a transformer ATR and rectifier REU. The bridge includes resistances BRX, BRY having variable voltage-current characteristics. In the charging system for the batteries A, B, shown in Fig. 3, the rectifying arrangement of the parent Specification is represented by CV, and the controlling bridge CBR may be modified, when a time element tsC closes a switch, by the addition of resistances RA, RB to give increased output for the purpose of supplying the load circuit T66, T55 and charging a battery simultaneously. The bridge also operates a relay CD when the battery on charge reaches a fully charged condition thereby opening the charging circuit. A bridge DBR having similar characteristics operates a relay D when the battery which is supplying leads T55, T66 becomes discharged. The relay D through a further relay DA operates switches da3, da4 which disconnect one battery from the leads T55, T66 and connect the other. Signal lamps L3-L10responsive to the several relays show the condition, at any time, of the various parts of the system. Another bridge operating through relays with a thermal delay switch gives an alarm when the voltage across the D.C. output leads reaches a pre-determined value. Specification 388,772 is referred to.
Patent GB-330215-A (GB)
Title: Improvements in and relating to dyestuff intermediates
Filed: 1928-11-27
Abstract: 330,215. Thomas, J., Fairweather, D. A. W., and Scottish Dyes, Ltd. Nov. 27, 1928. Acylaminoanthraquinones, alkyl ethers of leuco compounds of.-Acylaminoanthraquinones are treated with acid reducing agents, for example, zinc and an acid, preferably acetic acid, and preferably in an alcoholic medium, and the intermediate product thus formed is etherified with or without first isolation to give the 9 : 10-dialkyl ethers of the acylaminoanthrahydroquinones. Alkylation may be effected by means of a dialkylsulphate or a p-toluene sulphonic acid ester, and reduction may take place in an atmosphere of nitrogen as in the examples, which describe the preparation of the 9 : 10-dimethyl ethers of 1- and 2-acetylaminoanthrahydroquinone, 2-benzoylaminoanthrahydroquinone, 1-chloro- and 3-chloro- 2-acetylaminoanthrahydroquinone. The corresponding ethyl and propyl ethers are mentioned. Specification 297,042 is referred to. The Provisional Specification refers to the treatment of vat dyestuffs and intermediates generally.
Patent GB-359256-A (GB)
Title: Improvements in clip pulleys
IPC: F16H55/50
Filed: 1930-11-20
Abstract: 359,256. Clip pulleys. GEWERKSCHAFT EISENHUTTE WESTFALIA, Lunen-on-Lippe, Germany. Nov. 20, 1930, No. 34966. Convention date, Dec. 16, 1929. [Class 80 (i).] A clip pulley formed in one or two parts a<1>, a<2> carries loose conical rings b, c of larger diameter than the pulley grooves, one ring b carrying a cylindrical flange f upon which the rope a bears. Rope pull effects shifting of the rings within the V-groove so as to grip the rope. Where the pulley is made in one piece, the rings are each necessarily made in two or more parts, and when the pulley is divided, as shown, the rings are preferably so made.
Patent GB-782433-A (GB)
Title: Improvements relating to electronic computing arrangements
Inventor: CRAXTON ROBERT TREVOR
IPC: G06F7/50
Filed: 1954-12-02
Abstract: 782,433. Electronic computing arrangements. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 30, 1955 [Dec. 2, 1954], No. 34969/54. Class 106 (1). A carry-over arrangement for electronic multi-cathode-tube counting stages comprises a transfer valve T with a rectifier W in its cathode circuit and a condenser C1 coupling the (n-1)th cathode of the preceding counting stage to the transfer valve cathode whereby the trailing edges of pulses leaving the (n-1)th cathode of the preceding stage are developed to cause triggering of the transfer valve. The leading edge of the positive pulse caused by arrival of the discharge glow on cathode K9 of the preceding counting stage causes conduction through the rectifier W so that the potential of the cathode of tube T is unaffected. However, the negative-going trailing edge of the pulse is differentiated by condenser C 1 and the inverse resistance of the rectifier W, causing a sharp negative pulse at the cathode sufficient to fire the transfer tube T. The valves of the components in the output circuits of the tube T are chosen so that the firing of the tube causes a negative pulse to be delivered via condenser C2 to the transfer electrodes G 1 of the next counting stage, followed by a negative pulse via condenser C3 to the transfer electrodes G2. At the termination of this second pulse the next higher counting tube D2 will have been stepped forward by one unit.
Patent GB-1092619-A (GB)
Title: Gas separation pump for liquid circulating systems
IPC: F04D9/00
Filed: 1966-08-05
Abstract: 1, 092, 619. Centrifugal pumps. INTERNATIONAL STANDARD ELECTRIC CORPORATION. Aug. 5, 1966 [Aug. 10, 1965], No.35127/66. Heading F1C. A centrifugal pump for hot water circulating systems has an inlet chamber 20, Fig. 3, in which gases are dynamically moved to the centre and flow together with liquid through an annular passage between a stationary tube 79 and a rotating tube 67, the passages between radial ribs 78, and a collecting chamber 70, to a pipe 16 which may be connected to an expansion tank (14), Figs. 1 and 2 (not shown). Gas-free liquid in chamber 70 is drawn through the tube 67 and passages 69 in a lock-nut 61, to the suction side of impeller 31. Additionally, gas-free liquid can flow to the impeller through an annular passage surrounding a pair of cup-shaped members 56, 57 welded to the lock-nut and rotating with the impeller. The member 57 has a flange 64 having flats 66 for tightening of the lock-nut.
Patent GB-893732-A (GB)
Title: Process for preparing vinylaromatic sulfonic acid salts
IPC: C07C309/28
Filed: 1959-10-19
Abstract: A process for producing vinyl aromatic sulphonic acid salts comprises the sulphonation of a b -haloethyl aromatic compound with sulphur trioxide in the presence of a polychlorinated aliphatic liquid hydrocarbon and subsequent dehydrohalogenation by treatment with an excess of an aqueous alkali characterized in that the polychlorinated aliphatic liquid hydrocarbon is removed from the alkaline reaction mixture by distillation.  The aromatic reactant may be a chloro- or bromo-ethyl benzene or naphthalene which may be ring substituted, e.g. by alkyl groups and/or chlorine atons and the preferred solvent is methylene chloride which may be removed by flash distillation. The reaction is preferably carried out by reacting the haloethyl aromatic with 1-2 mols boron oxide-free sulphur trioxide at -20 DEG C. to +80 DEG C., adding up to 5 weight per cent water to hydrolyse anhydride by-products, treating the mixture an amount of aqueous alkali metal hydroxide solution in excess of that required to neutralise excess sulphonation acid, sulphonic acid product and the hydrogen, halide evolved in the dehydrohalogenation step distilling off the polychlorinated aliphatic liquid hydrocarbon, separating insoluble material from the reaction medium and heating the resulting aqueous mixture at about 50 DEG C. to 100 DEG C. in the presence of oxygen to minimize polymer formation until dehydrohalogenation is complete.  The salt may then be recovered from the aqueous solution, for example, by crystalisation or spray drying. Examples describe the preparation of sodium styrene sulphonate, sodium vinyl toluene sulphonate and sodium dichlorostyrene sulphonate.  Reference has been directed by the Comptroller to Specification 815,215.
Patent GB-1356975-A (GB)
Title: Thin walled nestable containers
IPC: B65D21/02
Filed: 1971-07-27
Abstract: 1356975 Nestable containers FOSTER GRANT CO Inc 27 July 1971 [27 July 1970] 35293/71 Heading A4A [Also in Division B8] A side wall or skirt portion 29 of a nestable container formed with a plurality of outwardlyprojecting lugs 32, which have co-planar bottom surfaces 36 defining an interrupted external shelf surface and which merge at their upper ends into a lateral shoulder to define an interrupted internal shelf surface 31 having a complementary configuration, is additionally formed with shelf members 38 or 44, each of which either bridge the lower portions of adjacent lugs 32A, 32B, Fig.1, or bridge the upper end portion of a lug, Fig.8, to provide additional shelf surfaces 139 or 45. The shelf members prevent jamming of one container nested within another with the upper container being supported by its lugs on the shoulder of the lower container even in the event of the lugs of both containers being in alignment. The lugs may be of rectangular, sinuisoidal, or triangular configuration, Figs.9 and 10 (not shown). The container is of plastics material, e.g. polystyrene, polyethylene or polypropylene, and may be thermo-formed or compression or injection-moulded. The container may be of frustro-conical or polyhedral shape.