baber/WOPTO huggingface dataset:
Patent GB-636704-A (GB)
Title: Improvements relating to the treatment of gas works effluent
IPC: C07C37/00
Filed: 1947-12-18
Abstract: <PICT:0636704/III/1> Ammonium chloride and other constituents are recovered from gas works effluent by washing the raw ammoniacal liquor with benzole to remove monohydric phenols, distilling off free ammonia, concentrating the spent liquor by evaporation, removing higher phenols by solvent extraction, crystallizing ammonium chloride from the resulting liquor and separating the phenols from the solvents.  As shown, raw liquor from tank a is washed with benzole from c in a tower b.  The benzole is recovered in still d and returned to storage at f while the phenols pass to receiver g by way of a finishing still wherein further benzole is recovered and returned to f.  The washed liquor from b is concentrated in a plant comprising a heat exchanger h, reflux heat exchanger i, dissociator j in which free CO2 and H2S are separated from the liquor by spraying the latter at 90 DEG  C. on to coke, and still k from which steam, introduced at the bottom, leaves with ammonia at the top and passes through exchangers i and h and a condenser to a tank m, from which any benzole that has been carried over is returned to f.  A portion of the spent liquor from k is withdrawn, cooled at o and returned to an ammonia washing plant, while the remainder is concentrated in evaporator n, cooled at p and washed at q with butyl acetate from r, the solvent being recovered in still s and returned to storage at u, higher phenols being passed to tank t.  The spent liquor from q then passes through heat exchangers 10 and 11 to a solvent recovery still v, the solvent condensed at 12 and separated at 13 being returned to tank u, while water separated at 13 is returned to the outlet from evaporator n.  The spent liquor from v is evaporated in a vacuum crystallizer w from which ammonium chloride passed to centrifuge z, mother liquor being collected in z1.  Condensates from w and n are pumped either to an ammonia washing plant or through an active carbon filter y to water drains.  The mother liquors gradually build up in thiocyanate and thiosulphate and may be drawn off and concentrated.ALSO:In recovering ammonium chloride (see Group III) and other constituents from gas works effluent, the raw ammoniacal liquor is washed with benzole to remove monohydric phenols, the spent liquor is then distilled to remove free ammonia, concentrated by evaporation and higher phenols are then removed by extraction with butyl acetate. The phenols are separated from the solvents.
Patent GB-1318311-A (GB)
Title: Can stock with differential protective coatings
IPC: C25D11/38
Filed: 1970-07-09
Abstract: 1318311 Electrolytically coating tinplate with chromium oxide USS ENGS & CONSULTANTS Inc 9 July 1970 [9 July 1969] 33479/70 Heading C7B Differential tinplate having a coating of less than 0À5 pounds per base box (i.e. less than 0À00003 inch thick) on the lightly tinned side is electrolysed as cathode in a Na 2  Cr 2  O 7  solution of 20-30 g/l, having a pH of 3À5-5À5 and temperature 160-200‹F., to provide a differential Cr 2 O 3  coating thereon, supplying 100-170 coulombs/ sq ft. of current to the heavily tinned side to provide thereon 1À0-1À5 mg Cr/sq ft. and no  more than 45 coulombs/sq ft. of current to the lightly tinned side to provide thereon 0À4-0À8 mg Cr/sq ft., to maintain good solderability and resistance to sulphide staining and detinning. Differential applied current may be effected by providing a larger anode surface area for the heavy current side, e.g. passing the tinplate strip through separate tanks adjacent pairs of anodes on the heavily tinned side with or without a single anode on the lightly tinned side.
Patent GB-1102976-A (GB)
Title: Apparatus for controlling the production of cellulose acetate compounds
IPC: C08B3/06
Filed: 1964-08-18
Abstract: <PICT:1102976/C3/1> A reactor for acetylating cellulose, comprising a hollow cylinder or drum as defined in Specification 1,102,975 comprises means to extract, condense and return vapour continuously and to extract and return a sample flow of liquid mixture continuously and means to measure a physical and/or chemical property of said flow. If desired, a volatile liquid, e.g. trichlorofluoromethane or methylene chloride may be added to the reaction mixture so that by its evaporation with absorption of latent heat, the temperature of the reaction mixture is prevented from rising excessively.  As shown in the Figure, the reactor 1 is supported in fixed bearings 2, 3, reactants are fed in through pipe 4, and vapour is removed through pipe 5 by means of pump 6, and passed to condenser 7 for return through pipe 8.  The reaction mixture is removed through line 9 by means of slurry pump 11 and passed to device 12 provided with a pair of electrodes suitably connected to provide an indication of the conductivity of the liquid, it being possible to cause an alarm to be given or the rotation of the cylinder to stop when a predetermined resistance value is reached.  Device 13 is a tank having opposed glass sides, by means of which the visual properties of the reaction mixture may be determined and device 14 comprises a glass electrode indicating the pH of the mixture or a thermometer.  The operation of the pump 6 may be stopped so long as the mixture temperature is below a predetermined figure. The temperature may also be recorded, the viscosity of the mixture may be measured or an alarm or stop signal may be arranged in connection with any monitored property of the mixture.  In place of the illustrated bearings, track rails round the periphery of the cylinder, supported on rollers may be employed.
Patent GB-873362-A (GB)
Title: Improvements in or relating to zirconium alloys
Inventor: TYZACK CHRISTOPHER
IPC: C22C16/00
Filed: 1958-10-21
Abstract: A corrosion-resistant zirconium alloy has the following composition: Cu 0.125-0.5 atomic %, Sn 0.5-2 atomic %, Zr and impurities, the remainder.  The impurities may be those in commercial Zr sponge except that nitrogen should not exceed 0.02% by weight.
Patent GB-1385986-A (GB)
Title: Apparatus for the application of liquids to granular solids
IPC: B01F5/20
Filed: 1972-07-19
Abstract: 1385986 Treating grain with liquid BP CHEMICALS INTERNATIONAL Ltd 12 June 1973 [19 July 1972] 33742/72 Heading A2Q [Also in Division B1] Apparatus for applying a liquid to a granular solid (e.g. treating grain with propionic acid) comprises a hopper 1 for the solid having a frusto-conical valve 8 suspended from a spring 14, 16 and discharging an annular curtain of solid into a vessel 3. This has walls with corrugations 25 down which the solids roll, and a liquid atomiser 3 comprising a plurality of annular strips supported by a rotatable shaft, and a supply pipe providing a fan jet inclined to the shaft and directed towards the sides of the vessel, whereby the solids are wetted on all sides. The degree of opening of the valve 8 is dependant on the weight of material in the hopper and controls the rate of liquid supply by means not described.
Patent GB-775384-A (GB)
Title: Process for the dimerisation of olefins or olefinic mixtures
IPC: C07C2/30
Filed: 1954-11-22
Abstract: The dimerization of mono-olefins of at least three carbon atoms is effected in the presence of activators comprising hydrides of Be, Al, Ga and In or their derivatives wherein one or more hydrogen atoms are substituted by alkyl or monovalent aromatic hydrocarbon radicals, as in the parent Specification but at temperatures above 250 DEG  but not exceeding 350 DEG  C.  The activator may be present as a molecular compound with another organic compound or a complex with an alkali metal hydride, alkyl or aryl. Olefin and activator may be injected continuously into a reaction tube by pumps controlled to cut out when a pressure of e.g. 210 atmospheres is reached and come in when this falls below 190 atmospheres.  Products released at the upper end are fed to separating columns to separate the activator which is recycled. Examples relate to dimerization of propylene, alone or with propane, and butene-1, at various temperatures and 100 or 200 atmospheres.
Patent GB-984796-A (GB)
Title: Staple extractor
IPC: B25C11/00
Filed: 1961-09-21
Abstract: 984,796. Staple extractors. ETABLISSEMENTS J. HERBIN S.A. Sept. 21, 1961 [Dec. 28, 1960], No. 33809/61. Heading B4W. A staple extractor comprises jaws 1, 3 pivoted together at 6, a staple engaging blade 2 being articulated at 4 to the jaw 1, the jaw 3 serving as a support base and guide means being provided on the jaw 3 to guide the movement of the extremity of the blade toward the cross-bar of a staple. The jaw 3 has a generally rectangular opening 7 having a projection 8 of rounded shape and bevelled to engage the bridge of a staple. The front of the blade 2 is cut away to provide two spaced projections 10, 11 to engage beneath the bridge of the staple. A cylindrical guide 14, Fig. 4, is connected by a blade spring 15 to the under side of the blade 2, the end of the spring terminating in a fork, the ends of which are spaced so that they engage exactly in the opening 7 and serve as guides. A guide means is provided by the ends of the guide 14 bearing on the base of the jaw 3. At the end of the movement the point of the bevel 8 is received in a groove in the front face of the guide 14. In a modification, Fig. 2, the guide comprises a syncline 24 formed by folding the blade.
Patent GB-1332872-A (GB)
Title: Detecting the end of a roll of web material
IPC: G03G15/00
Filed: 1971-07-19
Abstract: 1332872 Photo-electric monitoring A B DICK CO 19 July 1971 [20 July 1970] 33818/71 Heading G1A Exposure of the core of a roll of web material as the material is unwound is detected by directing a beam of radiation at the roll and detecting the change in reflected radiation when either a core surface of different reflectivity is exposed or an end mark on the web is detected the arrangement including an arrangement for producing a radiation reference signal with which the reflected radiation signal is compared. The arrangement is described for use in a copying machine in which it is arranged to open the motor circuit and give a warning when the paper runs out.
Patent GB-1321026-A (GB)
Title: Data processing device
IPC: G06F15/80
Filed: 1971-07-20
Abstract: 1321026 Data processors CONTROLOGIC Inc 20 July 1971 [23 July 1970] 33941/71 Heading G4A A data processing unit, suitable for use as a piece part for constructing more complex data processors, comprises an assembly of registers 14  connected to an input bus 26 and an output bus 46; an arithmetic unit 22 having an input 42 connected to the registers 14 through the buses and an output 44 connected to the output bus, the processing unit having an external terminal 70 for connecting to the buses; a timing control 78 operable synchronously or asynchronously; and a control word decoder 76, the  outputs of the timer and decoder being connected to the registers and arithmetic unit. A second terminal 68 supplies address information to the registers 14; a third terminal 88 supplies synchronizing signals to the timing control and a fourth terminal 94 supplies control information to the decoder 76. Each of the four terminals comprises a plurality of connections corresponding to the number of bits that the data processing unit can deal with in each case. In order to construct a larger processor the units can be combined in two ways. In Fig. 6A (not shown) the various bits of the data and address terminals 70, 68 are grouped together while those of the synchronizing and control terminals 88, 94 are linked together bit by bit; in this case the combined unit can deal with double length data words but normal length control words. In Fig. 6B (not shown) the bits of the data and address terminals are linked bit by bit and those of the sync. and control terminals are grouped together; now the combined unit can deal with double length control words but normal length data words. Further units can be combined in a similar way using any combination of these two basic ways. In the processing unit 10 the input bus 26 is connected to the terminal 70 and output bus 46 by inverters and/or amplifiers 72. Further internal input and output buses 28, 62 are connected by similar devices 74. The inputs to the arithmetic unit 22 contain registers 18, 20; register 18 receives data from internal bus 28 while register 20 receives data from both the input and output buses 26, 46. The arithmetic unit 22 comprises a full adder (Figs. 2, 2A, not shown) whose output can be shifted up or down one bit (Fig. 2C, not shown) and gates (Fig. 2B, not shown) for AND, OR, and EXCLUSIVE- OR decisions. The timing control 78 (Fig. 5, not shown) comprises a delay line oscillator and a shift register arranged to produce a four stage cycle of operations (Fig. 4B, not shown). In a complete installation (Fig. 7B) two processors 248, 250 each comprises one or more of the processing units. The first 248 performs the data computations while the second is programmed to perform the input/output functions; both have direct access to the main memory 260 of the computer and therefore work in parallel.
Patent GB-1040339-A (GB)
Title: Improvements in or relating to baking ovens
Inventor: BARRATT JOHN
IPC: A21B1/48
Filed: 1962-09-05
Abstract: 1,040,339. Baking ovens. T. & T. VICARS Ltd. Aug. 30, 1963 [Sept. 5, 1962], No. 33985/62. Heading A2A. A tunnel oven, Figs. 1 and 2, for baking products such as bread, biscuits or confectionery carried, in the direction indicated by the arrow 3, through the oven on the upper flight of an open-linked, substantially horizontal, travelling conveyer belt 2, whose lower flight moves in the opposite direction, indicated by the arms 4, comprises an outer shell 1 enclosing a series of baking chambers, of which only the first and second are shown, since any other baking chambers are similar to the second. In each baking chamber, upper and lower banks of heat-transfer tubes 5, each D- shaped in cross-section are arranged above, below, parallel to and equi-distant from the conveyer, with their flat surfaces facing it, so that they radiate heat on to the products. The tubes are connected by manifolds 6. A fan 10 circulates hot gases from a gas or oil burner 7 through trunking 8, the upper and lower banks of tubes 5 and trunkings 9 and 11. The latter returns the gases to the burner 7 for re-heating and re-circulation. Any excess gas is discharged through a vent pipe 12. The tubes 5, in each bank, are separated by long narrow slots 13. In each baking chamber, the upper and lower banks of tubes are spaced, respectively, from the head and bed of the oven by spaces 15 and 16. A fan 14, Fig. 3, circulates air through trunking 17, then through the space 15, where the air is heated by the upper ducts 5, then through the slots 13 between these ducts, then through the open links of the conveyer belt 2 and the slots 13 between the lower ducts 5, and then through the space 16, where the air is heated by the lower ducts. Near the entrance to the first baking chamber of the oven, Figs. 1 and 2, the upper tubes 5 are made shorter than the lower ones to accommodate a downwardly flanged canopy 18 containing a manifold, connected to a source of steam and having branches 19 provided with nozzle openings, through which steam is fed into the oven In an alternative construction, the tubes 5 are triangular in cross-section.
Patent GB-339750-A (GB)
Title: Improvements in station or stopping place indicators for railway or road vehicles for public transport
IPC: B61D41/00
Filed: 1929-11-07
Abstract: 339,750. Haeberlin, M. C. Nov. 10, 1928, [Convention date]. Selective signalling-apparatus.-Indications of the stations on a route plan are illuminated progressively so as to indicate the next stopping place as a train or road vehicle proceeds on its journey. As shown in Fig. 1, lamps 1 - - 18 arranged to illuminate the corresponding stations of a route plan are conected to the contacts 26 of a distributor provided with contacts 1 - - 18 arranged in such a maner that upon step-by-step rotation of the distributor, the lamps 1 - - 16 are illuminated successively corresponding to the outward journey, the lamps being re-lit in the reverse order, viz. : 16 - - 5, 17, 18 for the return journey upon continued rotation of the distributor. The distributor is driven by a ratchet wheel which is stepped mechanically, pneumatically or electromagnetic ally. In the latter case the stepping magnet may be operated by a manually-controlled switch or a switch automatically operated at predetermined points on the track, Instead of contacts 1-18, cam projections adapted to close pairs of contacts may be employed. In addition to the station indications, indications of the direction of travel may be provided.
Patent GB-1396237-A (GB)
Title: Curtain-heading tapes
IPC: A47H13/16
Filed: 1973-07-17
Abstract: 1396237 Curtain heading tapes J A P GONON 17 July 1973 [18 July 1972] 34104/73 Heading A4B [Also in Division D1] A curtain heading tape 2 has two series of strings 3, 4 to effect pleating, each string passing through spaced sheaths 5 separated by zones in which the strings run freely over one surface of the tape except where they pass under spaced attachment points 6 which in use define the pleat bottoms, the sheaths of the two series being of different lengths and the number of attachment points in corresponding zones of the two series being different whereby optional use of either the strings 3 or the strings 4 will produce a different number of pleats in corresponding zones.
Patent GB-789602-A (GB)
Title: Relay register
IPC: H04Q1/38
Filed: 1954-11-26
Abstract: 789,602. Electric selective signalling and control systems. STANDARD TELEPHONES & CABLES, Ltd. Nov. 26, 1954 [Dec. 4, 1953], No. 34332/54. Class 40 (1). In a relay register of the type comprising a plurality of relays in which a single relay can be operated at a time in response to a particular signal corresponding to that relay, the signals consisting of different potentials applied to an input terminal common to all the relays, the relays S21, S22, each have two differential windings with an equal number of turns connected in series, the ends of the windings being respectively connected to battery negative and to battery positive through ground. If the left-hand winding of relay S21 has three times the resistance of the right-hand winding and the battery voltage is - 48 volts the cathode of rectifier G21 will be biased to - 12 volts. Similarly, if the right-hand winding of relay S22 has three times the resistance of its left-hand winding, the anode of G22 will be biased to - 36 volts. If resistors R11, R12 are equal the cathode of G11 and the anode of G12 will be biased to. - 24 volts. By applying ground potential to the input terminal T, relay S21 only will be energized. S11 is not operated since its windings are so arranged that equal and opposite fluxes are produced, and S12 and S22 are prevented from operating by the - 36 volts bias on rectifier G22 and the - 24 volts bias on rectifier G12. A potential of - 12 volts at T will operate relay S11 only, and the application of - 36 volts- and - 48 volts at terminal T will operate relays S12 and S22 respectively. Resistors R21 &c. shunting the coils of relays S21, S22, prevent a temporary energization of a relay such as S11 when it is desired to operate S21.
Patent GB-486965-A (GB)
Title: Improvements in or relating to pivot fittings for windows, doors and the like
IPC: E05D7/08
Filed: 1936-12-15
Abstract: 486,965. Hinges. ESSMANN, K. F. T. A., and HART, E. E. Dec. 15, 1936, No. 34404. [Class 65 (ii)] A pivot fitting for a window or door, rotating about a vertical axis positioned inwardly of the stiles, consists of two pairs of coacting elements made of wood or other non-metallic material. One of the elements 11 having a frusto-conical surface is housed in a plate 9, and the other which is a cylindrical plug 8 with a frusto-conical recess 12 fits snugly in cylindrical recesses cut in the top or bottom rail of the window or it may be held in place by screws inserted from inside the recess 12. Thin metal washers 13 allow the relative positions of the two elements to be adjusted. The elements may be bushed with wear-resisting material.
Patent GB-916415-A (GB)
Title: Cold gas supply system for aviators' suits
Inventor: HARPER RAYMOND
IPC: F24F11/76
Filed: 1960-10-07
Abstract: 916,415. Air conditioning. BRITISH OXYGEN CO. Ltd., and ENGLISH ELECTRIC AVIATION Ltd. Sept. 29, 1961 [Oct. 7, 1960], No. 34462/60. Class 137. [Also in Group XIII] In a system for supplying cooling gas to an aviator's suit, warm suit-ventilating gas, such as air from an engine compressor, is passed through one side 12 of a heat-exchanger 11 where it is  cooled by low-temperature liquefied gas drawn off from a stored supply 14, the liquefied gas, which is vaporized in the heat-exchanger, has its rate of flow controlled by valve 22 actuated by a thermostat 23 located downstream of the heat-exchanger so as to be responsive to the temperature of the cooled suit-ventilating gas, and the vaporized gas and cooled suit-ventilating gas are mixed together. The thermostat 23 may be set to provide a final temperature of about 5‹ C. for both the cooled and the vaporized gas and may be located either upstream (as shown) or downstream of the junction where the gases mix. The arrangement for storing the liquid gas, e.g. nitrogen or oxygen, includes a vapour pressure build-up circuit including a lightly-loaded check valve 20, pressure-closing valve 28, excess pressure relief valve 29 and vent valve 30. The suit-ventilating gas is dried partly by device 25 which collects the water condensed by cooling and partly by the mixing with the dry nitrogen or oxygen vapour. The gas is applied to one or more suits through pressure-reducing valve 26.
Patent GB-1371029-A (GB)
Title: Material stitching apparatus
IPC: D05B73/12
Filed: 1971-10-26
Abstract: 1371029 Sewing W J CLARKSON Ltd 26 Oct 1971 [29 Oct 1970] 3450/73 Divided out of 1371028 Heading D1G A work holding template 7 (Fig. 1) has a guide slot engaged by a guide 3 fixed to a sewing machine bed, the template being moved past the guide by a driven roller 13 which engages the edge 9 of the template. The guide 3 has holes 4, 5 to permit a needle and a knife respectively to pass through it. The roller is pivoted on an arm 15 biased anticlockwise by a spring 19, and driven from the rocker shaft through an arm 21 and a spragtype clutch. To allow the material to pass the needle at a uniform speed, a second roller 14 engages raised drive parts 11, 12 at convex curves, while the edge is cut back to avoid contact with the normal roller. At concave curves (Fig. 3), a third, smaller, roller engages an edge 29 set out further than the normal edge.