baber/WOPTO huggingface dataset:
Patent GB-918119-A (GB)
Title: Producing liquefied natural gas
Inventor: HASHEMI-TAFRESHI HADI
IPC: F25J3/06
Filed: 1961-09-29
Abstract: 918,119. Liquefying gases. CONCH INTERNATIONAL METHANE Ltd. Sept. 29, 1961, No.35060/61. Class 8(2). A method for producing liquefied natural gas from gaseous natural gas that is under pressure comprises liquefying the gaseous natural gas by mechanical refrigeration, reducing the pressure on the liquefied natural gas in an expansion, stage to obtain colder liquefied natural gas and colder gaseous natural gas, taking off the colder liquefied natural gas as product, and compressing the colder gaseous natural gas, liquefying it by indirect heat exchange with liquid nitrogen, and taking it off as product. As described, compressed gaseous natural gas is liquefied by being passed by means of a conduit 1 through a mechanical refrigeration system 2, the refrigeration therein being for example by means of a cascade method using methane, ethane and propane as described and claimed in Specification 852,844. The liquefied natural gas leaving the system 2 passes successively through expansion chambers 3, 7, 11, 15 and 19 and is delivered in a colder state to a conduit 21; the gaseous natural gas obtained in the expansion chambers is passed through compressors 22, 24, 26, 28 and 30, the gas from each of the expansion chambers 19, 15, 11 and 7 being compressed to the pressure of the preceding expansion chamber and added to the gas obtained from the latter. The natural gas issuing from the compressor 30 passes through to a compressor 32 to a conduit 33; part of the natural gas then passes through a conduit 34 to the refrigeration system 2 where it mixes with rest of the gas which has been cooled and in part liquefied by indirect heat exchange with cold nitrogen gas in heat exchangers 42 and 43. The natural gas leaving the system 2 is in part liquefied and passes from the system 2 through heat exchangers 36 and 38, part of the gas flowing through each heat exchanger, for liquefaction and delivery by way of an expansion valve 40. The heat exchanger 38 is supplied with liquid nitrogen gas through a conduit 39, the nitrogen gas thereafter passing through the heat exchanger 43, an expander 44 and the heat exchangers 36 and 42 to atmosphere.
Patent GB-1179496-A (GB)
Title: Booster Voltage Circuit for Series-Connected Thyristors
Inventor: BOKSJO CARL INGVAR
IPC: H02M1/088
Filed: 1967-07-31
Abstract: 1,179,496. Thyristor circuits. ALLMANNA SVENSKA ELEKTRISKA A.B. 31 July, 1967 [5 Sept., 1966], No. 35070/67. Heading H2F. [Also in Division H3] A thyristor of the type having an auxiliary terminal 5 connected to the intermediate layer not connected to the gate terminal 4, has a reverse-biasing "boosting" voltage supplied by two sources 6, 61 and two diodes 7, 8 connected as shown. The voltage on terminal 5 reverse biases the layers so as to "boost" the breakdown voltage. Fig. 2b (not shown), relates to a thyristor of opposite conductivity type, the polarities of details 6, 6<SP>1</SP>, 7, 8 being reversed.
Patent GB-1435527-A (GB)
Title: Double-acting piston-type pumps
IPC: F04B53/14
Filed: 1973-07-24
Abstract: 1435527 Pistons USS ENGS & CONSULTANTS Inc 24 July 1973 [9 Aug 1972] 35121/73 Heading F2T [Also in Division F1] A double-acting piston pump for pumping abrasive slurries has a piston 12 provided with elastomeric sealing rings 16, 17 separated by a space 23 to which a pressurized flushing liquid such as clean water is supplied. The rings have confronting lips 22 whereby the liquid in the space 23 acts on whichever of the rings is the trailing ring to effect a seal against the cylinder 10. The leading ring, however, allows the flushing liquid to pass into the cylinder ahead of the piston and thus purge the seal of abrasive slurry.
Patent GB-282807-A (GB)
Title: Improvements in automatic telephone systems
IPC: H04Q3/00
Filed: 1927-12-29
Abstract: 282,807. Nicholson, T. H. Dec. 30,. 1926, [Convention date]. Void [Published under Sect. 91 of the Acts]. Drawings to Specification. Automatic exchange systems.-The invention relates to a system in which no relays and no selectors or multipling arrangements of the usual type are employed, connections being established by " links " which are moved into engagement with longitudinally-arranged sets of conductors known as " parabars " under the control of common " relator " shafts. These shafts are driven by spring motors under the control of escapement devices operated by magnets. The sequence of operations at the various switching stages is controlled by sequence switches or " sequencers " also driven by spring motors under escapement and magnet control. Control from the substation may be by means of resistance variations, the central controlling apparatus at the exchange comprising means for balancing the resistance at the substation and a differential magnet or " detector " which controls a further " sequencer " when balance is obtained. The substation apparatus may comprise sets of resistances one for each digits the whole of the wanted number being set up before the receiver is removed and the change over from one set of resistances to the next being effected bv a " sequencer " responsive to reverting impulses from the exchange. Means may be provided at the substation for indicating the number set up. Modified arrangements permit impulse transmitters of the dial type to be employed. The Specification does not admit of satisfactory abridgment.
Patent GB-1205168-A (GB)
Title: Preparation of diaryl ketones
Inventor: BAKKE JAN MAGNUS
IPC: C07C45/37
Filed: 1968-07-23
Abstract: 1,205,168. Diaryl ketones. BOFORS A.B. 23 July, 1968 [4 Aug., 1967], No. 35175/68. Heading C2C. 1,2-Diaryl ketones of formula in which Ar and Ar<SP>1</SP> are unsubstituted or substituted phenyl groups are prepared by oxidizing a 1,2-diaryl ethan of formula with nitric acid in the presence of a substantially inert organic solvent which is substantially immiscible with the nitric acid. Suitable solvents are halogenated hydrocarbons, e.g. chloroform. An example is given of the oxidation of 1-phenyl-2-(o-nitrophenyl) ethanol to o-nitrodesoxy benzoin.
Patent GB-450810-A (GB)
Title: Radio repeating systems
IPC: H04B7/155
Filed: 1935-12-20
Abstract: 450,810. Wireless signalling. STANDARD TELEPHONES & CABLES, Ltd., 63, Aldwych, London.-(Assignees of Crawford, A. B.) Dec. 20, 1935, No. 35350. Convention date, May 24. [Class 40 (v)] A short wave repeating station comprises a common receiving and retransmitting antenna system 13, such as that described in Specification 392,201, coupled through a transformer 14 with the tuned anode circuit 15 of a pair of push-pull connected valves 18, 19 cross-coupled through condensers 26 and supplied with quenching oscillations from a source 27 applied through condenser 30 to the grid coil 21. The signals may be monitored by an amplifier 24 and receiver 25 coupled to the common anode circuit through transformer 23 and responsive to the incidental demodulation currents present therein. In a modification, Fig. 3 (not shown), the quenching oscillations are applied to the anode circuit.
Patent GB-778995-A (GB)
Title: Improvements in or relating to magnetic couplings with vibration dampers
IPC: F16D3/14
Filed: 1955-12-09
Abstract: 778,995. Torsional vibration dampers. SMITH & SONS (ENGLAND), Ltd., S. Dec. 9, 1955 [Dec. 9, 1954], No. 35420/55. Class 108(3). [Also in Group XXXV] A magnetic fluid coupling for transmitting an uneven drive smoothly, e.g. from an I.C. engine, has a light armature 34 mounted by a torsionally resilient disc 30 on the output shaft 38. The driven shaft 12 carries the heavy magnetic yoke part 16 which provides annular poles 24, 26 energized by a circle of magnets 18. The two parts of the coupling are aligned by means of a self-aligning bearing block 40 of nylon or teflon permitting limited radial movement.
Patent GB-1011214-A (GB)
Title: Tobacco manufacture
IPC: A24B3/14
Filed: 1964-08-31
Abstract: 1,011,214 Reconstituting tobacco. AMERICAN MACHINE & FOUNDRY CO. Aug. 31, 1964 [March 30, 1964], No. 35541/64. Heading A2C. A method of tobacco manufacture comprises mixing dry ground tobacco dust in water with tobacco stem pulp, which has been refined after the fibre freeness measured on a Schopper Riegler device has reached a value after which further refining increases freeness number, shaping the mixture and drying the mixture as a coherent tobacco product. A quantitative example is given U.S.A. Specification 3,115,882 is referred to.
Patent GB-450387-A (GB)
Title: Improvements in and relating to valves
IPC: F16K41/14
Filed: 1935-12-23
Abstract: 450,387. Stuffing - box substitutes. JENNERT, E., (trading as JENNERT & SCHULZ, [Firm of]), 9, Bahnhofstrasse, Ziegenhals, Germany. Dec. 23, 1935, No. 35575. Convention date, Dec. 24, 1934. [Class 122 (v)] [See also Group XXIX] In a valve having a collar 2 on its spindle 1, bearing under axial pressure between an inner packing member 4 fixed in the valve housing 5 and a free outer packing member 3, a spring 6, the strength of which exceeds the thrust of the fluid in the housing 5 normally presses the member 3 and the collar 2 against the inner packing member 4, but the collar rises so that the member 3 bears against a projection 7 in the cover 8 due to the thrust on the spindle when the valve member is seated The collar 2 is of lenticular shape and the members 3, 4 are shaped to fit it. The packing members 3, 4 are of material, such as metal, not prone to decomposition.
Patent GB-450401-A (GB)
Title: Improvements in or relating to devices or appliances for use in illuminating roads and other places
IPC: E01F9/615
Filed: 1934-12-12
Abstract: 450,401. Road signs. JEARUM, F. C., Green Gate Cottage, Old Rectory Lane, Chipstead, Surrey. Dec. 12, 1934, No. 35680. [Class 3 (ii)] [See also Group XI and I] In a system for lighting a road, path, or like way used by vehicular or pedestrian traffic, boundary devices to delineate the traffic-way are provided with reflecting means adapted to receive light rays from a beam directed substantially parallel to the traffic-way and to substantially continuously illuminate the trafficway by reflecting the rays across it. The boundary devices may also be fitted with linear or point sources of light whereby additional beams are directed across the traffic-way. Fig. 2 shows a boundary device in the form of a kerb block. A base 8 of concrete, cast iron, or reinforced rubber is fitted on its bevelled face with a panel 9 which is screwed in a weathertight manner to a cover 10 adapted to house electric lamps supplied by leads 12 which are sealed to the wall of the cover and pass through openings 15 into a cable conduit 14 in the base 8. Channels 13 in the panel and base provide for air circulation by means of cooling passages having heat-absorbing surfaces. In front of the lamps the panel 9 carries a diaphragm having openings 17 opposite inclined prismatic reflectors 16 made of tinted glass. Differently coloured lamps may be employed whereby the colour of the beams may be controlled. Fig. 5 shows a boundary device in the form of a guard rail. Preferably, the hand rail 19 is provided with reflecting means of the kind fitted with lamps, but either kind may be used for the posts 21. The boundary devices may also be in the form of blocks for insertion in the surface of the traffic-way, and in a linear arrangement of such blocks, some of them may be so shaped and so disposed as to give forewarning of the occurrence and distance of a road island or other obstruction or control point. Fig. 6 (not shown) illustrates a complete lay-out of boundary devices at a four-way road crossing.
Patent GB-326151-A (GB)
Title: Improvements in or relating to calculating and similar machines
IPC: G06C11/12
Filed: 1928-12-04
Abstract: 326,151. Whitehead Torpedo Co., Ltd., and Jones, A. E. Dec. 4, 1928. Calculating-apparatus with printing mechanism. -A printing-calculating machine is provided with an attachment having a removable spool carried by a spindle rotated by a spring and upon which the strip of recording paper issuing from the machine is wound as the operation of the machine proceeds. As shown in Figs. 1 and 2, an arm or bracket B, pivoted to the frame A of the machine, has an eccentric adjusting device B<2> and supports a spindle D<1> upon which is detachably mounted a spool comprising a slotted tube C with end flanges C' connected to bosses C<2> fitting within the tube C. The record-strip issuing from the machine is wound on the spool under the control of a clock spring D<3> and gearing connected to a pinion D<2> on the end of the spindle D'. The clockwork mechanism can be locked and released as required by operation of a lever b' controlling a double pawl co-operating with one of the gear wheels. When the spool with the record-strip thereon is removed from the machinc it is rotatably supported in a separate contrivance provided with an additional spool on to which it can be wound and then rewound on to the removable spool for the purpose of inspecting the data entered.
Patent GB-619344-A (GB)
Title: Improvements relating to casing head equipment for boreholes or wells
IPC: E21B33/06
Filed: 1946-12-03
Abstract: 619,344. Boreholes or wells. SEAMARK, L. M. C. Dec. 3, 1946, No. 35819. [Class 85] Casing head equipment for boreholes or wells comprises a cylinder containing an annular piston within which is a massive elastic sleeve of rubber or the like mounted in upper and lower end rings, and means for applying hydraulic pressure on the piston to act through the upper end ring to apply axial compression and inward contraction to the elastic sleeve to cause the latter to engage a casing tube, drill stem or the like. A cylinder 1, bolted to the well-head flange 6, contains an annular piston 11, within which is a massive rubber &c. sleeve 20, the bore of the sleeve preferably tapering from each end ; the upper end of the sleeve 20 may be of relatively hard rubber, the middle section 21 of medium hard rubber, and the lower end of softer rubber. The upper end of the sleeve is held in an end ring 22 which is secured within the upper end of the piston by a bayonet joint 24 or the equivalent, a locking member securing the joint ; the lower end of the sleeve is held in an end ring 32 with a depending sleeve 34 which extends through a hard steel bush 36 and may be secured to the cylinder 1 by set-screws 58. Each end ring has passages 40, normally closed by plugs 39, to permit escape of air while securing the sleeve to the end rings, or for connection to a source of pressure to detach the sleeve. The upper end ring carries a flanged sleeve 43 to which a further casing head equipment may be attached. Passages 18, with an air bleeder valve 71, permit connection of the cylinder to a hydraulic accumulator &c., whereby to depress the piston and cause inward contraction of the sleeve 20 around a casing tube, drill stem &c. Studs 49, threaded to the cylinder, pass through a ring 47 threaded to the piston to limit upward movement thereof, or to hold the piston when the fluid pressure thereon is released ; set screws 54, threaded through the ring 47, contact the end of the cylinder to limit downward movement of the piston. A skirt 55 of rubber &c. is attached to the ring 47 and cylinder 1 by beadings 56 and prevents entry of mud &c. A passage 61, in the lower end of the cylinder, permits escape of air from below the piston. For use with small casing tubes, drill stems &c., the upper end ring is replaced by a liner extending through the piston and provided with a grooved internal flange in which the upper end of the sleeve 20 is received ; the lower end ring is modified accordingly to permit the liner to pass over its upper end. To facilitate dismantling &c., the piston may be held in its upper position by means of a slotted member 74, Fig. 4, secured to the ring 47 and adapted to be locked to the cylinder 1 by a bolt 75.
Patent GB-178505-A (GB)
Title: Improvements in coin freed apparatus
IPC: G07F5/24
Filed: 1920-12-21
Abstract: 178,505. Tiller, E. Dec. 21, 1920. Change-giving apparatus.-Relates to apparatus for use with coin-freed machines, the pennies after freeing these machines serving as change. The apparatus described is adapted to give change for sixpence. Filling storage receptacles. - Two weighted rocking-levers 2, 3 are positioned in line with a shoot 1 by which the pennies are discharged. The first three coins are diverted by a grooved way 4 on the lever 2, which enters a grooved way 5 on the lever 3, to a receptacle 6 and engage the end of the lever 2 to hold it tilted out of line with the shoot 1. The next three are diverted to a receptacle 7 and hold the lever 3 tilted. The following coins drop into a usual money-box 8. Delivery mechanism; coin action, mechanicalconnection.-The receptacles have hinged bottoms 9, 10 held closed by projections 13<a>. 13<b> on a slide 13. To operate the slide a bar 20 is pulled out to receive in a slot 22 a sixpence inserted through a slot 28. On pushing the bar 20 in, the sixpence moves the slide 13, to open the receptacles and then drops off a ledge 29 into a money-box 26. The pennies drop into a tray 17 and arms 13<c>, 13<d> on the slide hold the levers 2, 3 tilted. On again pulling out the bar 20, an end-plate 23 thereon sweeps out the change and engages a lug 24 on the slide to close the hinged bottoms 9, 10 and re-set the levers 2, 3. A front plate 25 on the bar closes the mouth of the tray and prevents tampering with the bar. The slot of the coinfreed machine may be closed while the change delivery slide is being actuated. Several change receptacles used separately or collectively may be employed, and, when a sixpenny change tube is filled, the following coins may fill a shilling change tube.
Patent GB-1138688-A (GB)
Title: Electrophotographic development
Inventor: NEHER BYRON WINFIELD
IPC: G03G17/02
Filed: 1966-08-10
Abstract: 1,138,688. Electro-photographic development. MINNESOTA MINING & MFG. CO. Aug. 10, 1966, No. 35860/66. Heading G2H.  Electrostatic images on an exposed photo-conductive layer having an electrically conductive backing are developed electrolytically, while the conductive backing is connected as the cathode, using an aqueous solution comprising an ionizable anionic dye providing a negatively charged chromophore, and a cation of Ni, Mg, Zn or Ca. The solution may also contain positively charged latex (e.g. copolyvinylacetate/viny chloride) or emulsion particles, or sodium acetate. The dye, which is preferably in the form of its Na or K salt maybe a sulphonic acid, derivative of a nitrophenol, azo, triphenyl methane, anthraquinone or indigo, or a dye containing hydrolysable chlorine. The metal cation is preferably in the form of a chloride, nitrate, sulphate, or acetate. The process may be used to form colour images using three separate exposure and development steps to form cyan, magenta and development steps, and the developed images may be transferred to a receptor e. g. a gelatine layer impregnated with aqueous acetic acid on a cellulose backing.
Patent GB-1020319-A (GB)
Title: Tobacco manufacture
IPC: A24B15/30
Filed: 1964-09-02
Abstract: 1,020,319. Tobacco compositions. AMERICAN MACHINE & FOUNDRY CO. Sept. 2, 1964 [Sept 3, 1963], No. 35911/64. Heading A2C. A tobacco composition comprises tobacco and polyglycerine which acts as a humectant and plasticizer. The polyglyceride has a degree of polymerisation of from 2 to 12 glycerine units and is present in an amount not exceeding 12% of the weight of the tobacco. The polyglycerine may be formed into a paste with tobacco dust and the paste may be cast to form a reconstituted tobacco sheet. Quantitative examples are given.
Patent GB-1398969-A (GB)
Title: Tent
IPC: E04H15/28
Filed: 1973-07-27
Abstract: 1398969 Umbrella tents ZANGENBERG BETEILIGUNGS GmbH [trading as HEINRICH ZANGENBERG GmbH & CO] 27 July 1973 [9 Aug 1972] 35927/73 Heading E1A An umbrella tent has the stays formed in two sections 5a and 5b foldable from an aligned position to a side-by-side position in the collapsed condition of the tent. A slide 7 is lockable (e.g. by a push button 11) in its upper position whereby the bracing elements maintain the resilient stays in an arched condition. The vertical pole 8 may have a removable extension 8a. The stays project outwardly beyond the join between the tent cover 1 and floor 2.
Patent GB-389213-A (GB)
Title: Improvements in and relating to printing machines
IPC: B41F3/00
Filed: 1931-12-30
Abstract: 389,213. Printing-machines. NORMAN, R., 4, Avenue Gribaumont, Woluwe St. Pierre, Brussels. Dec. 30, 1931, No. 36026. Convention date, Dec. 30, 1930. [Classes 100 (i) and 100 (ii).] Delivery apparatus.- In a stop - cylinder printing-machine with front delivery, the sheet, after being printed and before passing under the feed-table to the delivery, is released from the cylinder grippers 9 and held stationary adjacent to the periphery of the impressioncylinder 3 so as not to participate in the motion of the cylinder 3 while the latter is taking the next sheet to be printed, the delivery of the first-printed sheet being continued when the second sheet is on the cylinder 3. After receiving a sheet 8 from a feed-table 6, the cylinder 3 makes almost a complete revolution before being brought to rest by brake mechanism 45, 46, 47 of ordinary construction operated from a cam 48 on the main driving-shaft 20. In this position the sheet-grippers 9 are opened to release the sheet which is then held at its edges by telescopic suction pipes 10, 11 and a suction-chamber 21 arranged between the cylinder 3 and the table 6. The cam 48 then operates the mechanism 45, 46, 47 so as to cause the cylinder 3 to complete the revolution and be in position to receive the next sheet. When, during the next normal revolution of the cylinder 3, the succeeding sheet is completely on the cylinder 3, the suction in the ports 10, 11, 21 is cut off and reciprocating grippers 34 grip the front edge of the first sheet and carry it to a delivery pile 55. To facilitate the action of the grippers 34, the front edge of the feed-table 6 is recessed to allow them to pass and spaced strips 62 fixed to the cylinder 3 keep the front edge of the sheet spaced from the cylinder. To prevent contact of the printed face of the sheet with the undersurface of the table 6, rollers carried by rising-and-falling arms operated from a cam coaxial with the cylinder 3 are adjusted so as to bear on unprinted parts of the sheet and prevent the sheet rising. The two sets of pipes 10, 11 engaging the sheet edges are connected by transverse telescopic pipes 12 so that the pipes can be set according to the size of the sheets. Suction is applied from apparatus 17 operated by belts 18 from the shaft 20 and is controlled by a valve 26 operated from a cam 30 on the end of the cylinder 3. According to the Specification as open to inspection under Sect. 91, the stripping of each sheet from the cylinder 3 may be facilitated by air jets on the cylinder or by passing a bar between the sheet and the surface of the cylinder. Further, the motion of the cylinder 3 may be arrested in one position only by giving the suction devices 10, 11, a backward movement. Also, delivery may be effected by the cylinder 3 itself by utilizing that portion of its surface normally free and providing suction apertures or grippers adjacent thereto to hold the sheet. This subject-matter does not appear in the Specification as accepted.