baber/WOPTO huggingface dataset:
Patent GB-1007376-A (GB)
Title: Process for the recovery of liquid iron by reacting iron oxide ore
IPC: C21B13/14
Filed: 1962-07-31
Abstract: Molten iron is recovered by reacting solid iron oxide ore with a reducing gas composed of CO+H2 in a reduction zone and melting the reduction product in a combined melting and gas production zone wherein the reducing gas is generated by incompletely burning carbonaceous fuel with an oxygen-containing gas and preferably also by thermally decomposing water, the reducing gas being supplied directly <PICT:1007376/C6-C7/1> <PICT:1007376/C6-C7/2> to the reduction zone and the melting being effected by additional heating, such as electric arc heating.  The carbonaceous fuel may be coke, coking coal, oil, hydrocarbon gas or mixture thereof and may have a natural moisture content.  By introducing steam with pure oxygen, which is insufficient for complete combustion, and fuel into the gas production zone, a reducing gas containing by volume 75-85% CO and 25-15% H2 and having a temperature of 1650  DEG C. may be generated. By controlling the fuel supplied, the carbon content of the melted product may be adjusted. The process may be continuous or discontinuous wherein the production of the reducing gas and the connection to the reduction zone may be interrupted after each reduction phase and the melted product refined by top blowing pure oxygen with or without admixtures. Fig. 1 shows a closed eliptical, refractory lined melting and gas production vessel 1 carried on a tiltable construction 3 and comprising one or more graphite electrodes 4, at least one with a central bore into which is inserted concentive tubes 7, 8 for passing pulverulent coke or coal and oxygen with or without steam or water.  Joined to both sides of the vessel are rotating drums 12, 13 in gas-tight connection with the charging apertures 20 of the vessel and with refractory lined reduction towers 16, 17.  In a modification, shown in Fig. 3, the melting vessel 1 is stationary, having slag and iron tap holes 23, 24, and is in direct connection with the reduction towers 16, 17 without intermediate drums.
Patent GB-262578-A (GB)
Title: Improvements in or relating to suspended tray elevators for boxes, packages and the like
IPC: B65G17/32
Filed: 1925-11-21
Abstract: 262,578. Hall, F. J., and Southgate, E. Nov. 21, 1925. Endless - chain elevators with comb carriers; carriers, attaching to chains; guiding. -In elevators of the kind in which the load-carrying trays G are suspended between endless chains H, T, the pins g<5> connecting each tray to the chains are located on opposite sides of the vertical plane passing through the centre of the tray and are in the same horizontal plane. Each tray comprises a horizontal member g', Fig. 2, and a series of plates g<2> secured at right angles thereto to form a grid. The pins g<5> are attached to vertical members g<4> which are secured to oppositely-directed horizontal arms g<3> at the ends of the member g<1>. The members g<4> are kept in the vertical position on the upward run by outer guides A, B and inner guides E, F. In a modification the arms g<3> are connected directly to the chain links.
Patent GB-298643-A (GB)
Title: Sound reproducing and recording device
IPC: H04R9/12
Filed: 1928-10-12
Abstract: 298,643. Hallam, H., and HÚlary, J. R. M. Oct. 14, 1927, [Convention date]. Addition to 285,454. Magnetic instruments.-The conductor of the sound reproducing and recording device of the parent Specification is arranged so that it has no definitely fixed pivot point. According to one construction, Figs. 1 and 2, the device comprises a conductor 2 provided at one end with a stylus 3 and clamped between the poles of a, magnet 1 by a screw 4, pads 5 of a plastic substance, such as rubber, being mounted between the conductor and magnet poles. Movements of the stylus in the direction of the arrows 6 cause the conductor to be displaced in the direction of the arrows 7, the circuit wires being connected to the conductor on opposite sides of the magnetic field. In this construction the circuit wires move with the conductor 2. Figs. 3 and 4 show a modification in which this movement of the circuit wires with the conductor is avoided. In this modified construction, the conducting blade 13 is permanently fixed to members 11, 12 of insulating material mounted on opposite sides of the magnet 10, rubber &c. being inserted between the blade and the members 11, 12 as indicated at 14. The blade 13 is bent round so as to provide a central part 15 situated between the magnet poles, rubber &c. inserts 16 being provided as shown, One end of the movable part 15 is connected to one of the fixed portions of the blade by an elastic section 17 whilst the other end of the part 15 which carries the stylus 20 is connected to the other fixed portion of the blade by a deformable section 19. The terminals 22, 23 for the circuit wires are mounted on the fixed portions of the blade as shown.
Patent GB-755854-A (GB)
Title: Improvements in the production of aromatic carboxylic acids
IPC: C07C51/275
Filed: 1953-10-26
Abstract: Aromatic carboxylic acids are prepared by subjecting the mixture obtained from an alkylaromatic by treatment with nitric acid to a subsequent oxidation with aqueous alkali metal bichromate.  Before reaction with nitric acid the alkyl-aromatic may be treated with oxygen or oxygen-containing gases, using, for example, a naphthenate catalyst, until no further absorption of oxygen takes place. Specified alkyl-aromatics are o-, m- and p-xylene, o-, m- and p-diethylbenzene, o-, m- and p-diisopropylbenzenes and cymene.  The mixtures obtained after treatment of the alkyl-aromatic with nitric acid, and which contain resinified and nitrogenous by-products as well as the carboxylic acid, are separated from the nitric acid, neutralized, and heated under pressure at 180 DEG  to 300 DEG  C. with aqueous solutions of alkali metal bichromates.  The nitric acid oxidation mixture, after removal of nitric acid, may be treated as an acid reaction mixture with alkali metal bichromate solution.  At the end of the reaction the mixture is cooled, chromium oxide is removed and the solution acidified to give the mono- or poly-aromatic carboxylic acids.  In examples: (1) p-diisopropylbenzene is oxidized with a mixture of air and oxygen in the presence of cobalt naphthenate, and the oil obtained is refluxed with nitric acid to give crude terephthalic acid which is dissolved in caustic soda and heated under pressure with a solution of sodium bichromate, to give, after removal of chromium oxide, and acidification with hydrochloric acid, pure terephthalic acid; (2) ethylbenzene is oxidized with oxygen as in (1) to give acetophenone, which is treated with nitric acid and sodium bichromate as in (1) to give benzoic acid; (3) ortho-xylene is treated as in (1) to give ortho-toluic acid from the first stage, and phthalic acid as the final product; (4) meta-xylene is treated as in (1) to give isophthalic acid.
Patent GB-1038024-A (GB)
Title: Polymerization of olefins
IPC: C07C2/38
Filed: 1963-07-25
Abstract: The polymerization of unsaturated hydrocarbons, to produce mainly dimers and trimers, is effected at a temperature of above 250 DEG  C. up to the cracking temperature and elevated pressure in the presence of a compound or element which under the reaction conditions forms HCl, HBr, HI or H2S.  Apart from the respective elements and their hydrides, many organic sulphur and halogen compounds are specified. Olefins of 2-20 carbon atoms may be polymerized at 250 DEG  C. to the cracking temperature and above 200 p.s.i. for 0.001-300 minutes using a mol. ratio of olefin to hydrogen halide or sulphide of 10-500:1.
Patent GB-497112-A (GB)
Title: Improvements in control means for fluid fuel burners
IPC: F23N1/02
Filed: 1937-10-29
Abstract: 497,112. Fluid-pressure servomotor - control systems. MAJOR FURNACE & COMBUSTION ENGINEERS PROPRIETARY, Ltd. Oct. 29, 1937, No. 29618. Convention date, Dec. 18, 1936. [Class 135] [Also in Group XI] In a fluid burner in which the fuel and air supplies are regulated automatically to maintain a constant temperature in a furnace &c., the fuel-air ratio is determined at the minimum setting by the adjustment of a tubular valve body formed with a metering face relatively to a metering pin formed with a tapered groove or flat, and the fuel discharge at the maximum setting is determined by the adjustment of a main fuel valve. Fig. 1 shows a liquid fuel burner comprising a fuel jet 8 and air nozzle 5 secured to the stem 4 of a piston 3 fitted leakily in the burner casing C. The pressure of the air supplied to the main air nozzle 20 forces back the piston 3 until it is balanced by the pressure of a spring 6 on the nozzle 5 and the pressure on the rear side of the piston, which is connected by a pipe 37 to a vent valve 40, Fig. 9, operated by a thermostat 50 in the furnace. A tube 9 extends from the jet 8 into a tubular valve body 22 which is adjustable by a differentially threaded sleeve 32 in a boss 31 on the burner casing C. The fuel passes through a valve 68 controlling the maximum supply to a chamber 29 formed between the sleeve 32 and a screwed cap 25. A metering pin 21 formed with a tapered flat 27 or groove 27a communicating with an end bore 28ispressed against the jet tube 9 by a spring 23. The valve body 22 has a metering face 30 and is adjustable relatively to the pin 21 to determine the fuel-air ratio by turning the sleeve 32 which is formed with a hand wheel 33. Alternatively, the sleeve 32 may engage abutments on the valve body 22 instead of being threaded thereon. The air supply to the nozzle 5 may be adjusted by means of a rotatable vane 59 in the pilot air duct 58 and the movement of the piston 3 may be limited by a pin 57 adjusted by a hand operated cam wheel 55. The piston may be caused to leak in the cylinder 1 of the casing C by forming the cylinder with tapered bore or with a tapered groove. In large burners the pipe 37, instead of being directly connected to the vent valve 40, is connected to the bottom of a cylinder 41 fitted with a leaky piston 39 operating a vent valve 42. The upper part of the cylinder 41 is connected to the vent valve 40 so that when the thermostat 50 operates the lever 45 to relieve the pressure on the valve 40, the piston 39 rises and opens the valve 42. In an alternative arrangement shown in Fig. 10, the pipe 37 is fitted with a tapered valve 74 which is moved to allow air to escape through outlets 75 when a piston 74a subject on one side to the pressure in the pilot air duct 58 is moved by the pressure on its other side being released by the opening of the vent valve 40. In another arrangement, a spring-closed ball valve is opened to vent the space behind the piston 3 by a solenoid having a thermostatically-controlled circuit.
Patent GB-841054-A (GB)
Title: A thermally operated electric switch
IPC: H01H37/48
Filed: 1956-09-28
Abstract: 841,054. Thermal switches; snap-action switches. JACKSON INDUSTRIES Ltd. (Fischer, K.). Sept. 28, 1956, No. 29723/56. Class 38 (5). A thermally-sensitive element acts on a switch lever pivoted on a rockable lever or cradle against a return-spring between the levers, the rockable cradle being normally held against a stop by a stronger restoring spring and movable to prevent excess pressure being applied to the contacts. The thermally-sensitive element consists of a tube 14 and a rod 13 which has a head 12 engaging a switch lever 11 pivoted at 10 on a cradle 5 pivoted at 4 on a fixed bracket 3. A spring 9 urges the cradle 5 against an adjustable stop screw 6 and a relatively weaker spring 15 urges the lever 11 to the position shown in Fig. 1, wherein the end 43 of the lever 11 engages a stop surface 17 on the cradle 5. The lever 11 carries an insulator 18 supporting a fixed contact 20 and a bracket 22 for the pivots 23 of a rocker 24 which coacts with a snap-action spring 27, 28 carrying a moving contact 26. When the head 12 is moved downward the lever 11 is moved against the action of the spring 15 and an adjustable screw 29 on the cradle 5 engages the rocker 24 to snap open the contacts 20, 26. The temperature setting depends upon the position of the cradle 5 and is set by the stop 6. On further downward movement of the head 12 the lever 11 engages a stop-screw 16 so that the cradle and lever move together against the action of the spring 9. During the return movement the stronger spring 9 first restores the cradle and on continued movement of the lever 11 the downward bias of spring 28 causes the contacts to snap closed. The snap-action switch may be omitted and contacts located at 17 and 43. Fig. 4 shows a cam 34 coupled to the adjustable screw 6 and acting on a contact-spring 37 to operate contacts 39, 40 connected in the second pole of the power circuit so that both poles may be disconnected on rotation of the screw 6.
Patent GB-1218977-A (GB)
Title: Strand measuring and cutting apparatus
Inventor: GRISWOLD JAMES LUTHER
IPC: B65H61/00
Filed: 1968-06-21
Abstract: 1,218,977. Cutting apparatus. J. L. GRISWOLD. 21 June, 1968, No. 29753/68. Heading B4B. [Also in Division G1] An apparatus for measuring and cutting strand material, such as rope or cord, into uniform lengths comprises a frame carrying reels 7, 9 for supporting a supply of the material, a feed wheel device 18, 29 for feeding the cord through a cutting zone 37 under the control of timer T, switch means for stopping the feed device after a predetermined time and for then actuating a rotary cutting knife 42 to sever the cord and means for automatically restarting the feed device following actuation of the knife. The feed device includes a grooved wheel 18 driven by an electric motor (15, Fig. 3) and co-operating with an idler roller 29 mounted on a spring-loaded arm 27; the roller 29 may be lifted out of engagement with the cord by means of handle 32. The knife 42 is mounted on the shaft 41 of an electric motor 40 which is mounted on a pivoted support member 39, Fig. 2, and actuated by a solenoid 47. In operation, the timer T is set to a time corresponding to the required length of cord and a button S pressed thereby starting the feed motor so that the cord is fed from a reel 8 or 9 through guide tubes 23, 34. After the elapse of the selected time, the timer actuates a switch (S-3, Fig. 6) to stop the feed motor and also deÀenergize a solenoid 60 which, via pivoted lever 56, positively brakes the motor, the lever engaging one or other of projections 54 on the motor shaft. Movement of the lever 56 causes a switch 61 to be actuated to thereby prevent operation of the knife until after a short time, a further switch (S-5, Fig. 6) then being actuated by the timer so as to energize the solenoid 47 and cause the knife to sever the cord. The timer then resets itself automatically to its original position so that the apparatus will again operate as described above when the button S is pressed.
Patent GB-1420987-A (GB)
Title: Pyridine compounds
IPC: C07D213/85
Filed: 1973-06-22
Abstract: The novel pyridine compounds of the formula <IMAGE> in which Y, Z1 and Z2 have the meaning given in Patent Claim 1 are prepared by introducing the substituents Z1 and Z2 into a suitable halogenated starting compound by reacting it with in each case one mol of a compound of the formula QZ1 and QZ2, where Q denotes hydrogen or a metal. The resulting compounds are valuable intermediates, in particular for the preparation of dyes, such as azo and disperse dyes. The compounds are also suitable as pesticides and for pharmaceutical purposes.
Patent GB-693989-A (GB)
Title: An improved relay device
IPC: H01J13/48
Filed: 1950-12-05
Abstract: 693,989. Determining physical quantities. LANDIS & GYR AKT.-GES. Dec. 5, 1950 [Dec. 6, 1949], No. 29789/50. Class 37. [Also in Groups XL (b) and XL (c)] A relay is arranged to reverse its contacts at each of two values of a physical quantity by connecting it in a circuit substantially as shown, comprising a resistance 3 sensitive to the physical quantity. The quantity may be of ionization, heat, moisture, pressure, electromagnetic or mechanical waves, chemical action or corpuscular rays. If the value of resistance 3 decreases sufficiently capacitor 5 charges to such voltage that a gas tube 7 fires and a pulse of current then flows from the capacitor to change over the relay. Contact 10 of the relay now connects to the other side of the D.C. source 1, 2 and if the value of resistance 3 increases sufficiently the voltage across tube 14 will cause it to fire and a pulse of current will flow from capacitor 12 to restore the relay. The difference between the changeover values is determined by resistor 13. Further contacts of the relay may operate a signalling circuit.
Patent GB-159596-A (GB)
Title: Improvements in gramophones
IPC: G11B25/04
Filed: 1919-11-29
Abstract: 159,596. Green, J. Nov. 29, 1919. Sound magnifying and directing appliances.-A collapsable horn for a gramophone comprises a stem o which can be detached at the bayonet joint o<r>, and a mouth composed of radiating elastic strips e of spring sheet metal or the like. These strips are peripherally attached to the casing at d, and on removal of the stem o they flatten out.
Patent GB-504802-A (GB)
Title: Improvements in or relating to permanent magnet devices for producing axially symmetrical magnetic fields
IPC: H01J29/68
Filed: 1937-11-01
Abstract: 504,802. Electron lenses. NICOLL, F. H. Nov. 1, 1937, No. 29818. [Class 39 (i)] [Also in Group XXXV] A permanent magnet device for focusing a composite beam of electrons by means of an axially symmetrical field, comprises two or more coaxial magnetic polepieces spaced longitudinally from each other and having an aperture through which the beam passes, the gap or gaps between the polepieces, which may be adjustable, being straddled by a plurality of permanent magnets arranged symmetrically about the axis of the polepieces with like poles of each magnet associated with the respective polepiece. The magnets may be either of bar form, in which case the polepieces have flanges of magnetic material between which the bars fit, or of horseshoe form, in which case either or both of the polepieces may have flanges serving as end shields. In the forms shown, 1, 2, 2a are soft iron cylindrical cores bridged by horseshoe or bar magnets 6, 6a, the electrons passing near the axis 8. Magnetic flanges 3, 4 may be threaded to allow movement of one of the polepieces for adjustment of the air gap 7. The multi-gap form shown in Fig. 6, may be modified by substituting for the horseshoe magnets bar magnets supported by an additional flange on the core 2a. Numerical data are given.
Patent GB-649766-A (GB)
Title: Improvements in or relating to devices for locating picture-plates in succession so as to be substantially normal to the light path of a projection apparatus
IPC: G03B23/14
Filed: 1946-10-07
Abstract: 649,766. Optical projection apparatus. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Oct. 7, 1946, No. 29885. Convention date, Jan. 18, 1943. [Class 97 (i)] A device for locating picture plates in succession so as to be substantially normal to the light path of a projection apparatus comprises at least one plate carrier rotatable about a first spindle and at least one other plate carrier rotatable about a second spindle, the two spindles being parallel and so spaced apart that they lie outside the light path of the projector. As shown, in front of a projection lens 0, plate carriers 1, 2 are mounted for rotation about parallel spindles 3, 4. Each carrier is connected by a spring 8 or 9 to a fixed point and carrier 1 has a lug 5. In use and with carrier 2 in the light path, the carrier 1 is rotated in the direction 6 so that it takes up the position held by carrier 2 which is removed by the impact of lug 5 therein and the force of its spring 9 to a position determined by a stop 11. The rotary movements of the carriers may also be coupled by the provision of a rod, one end of which is hinged to each plate carrier between the ends thereof.
Patent GB-777971-A (GB)
Title: Improvements in or relating to electrical signal counting apparatus
Inventor: NUTTALL THOMAS CAYTON
IPC: H03K21/00
Filed: 1954-10-18
Abstract: 777,971. Digital electric calculating apparatus. CINEMA-TELEVISION, Ltd. Nov. 16, 1955 [Oct. 18, 1954], No. 29912/54. Class 106 (1). Apparatus for dividing by n (ten) the number of pulses applied to it, comprises a seriallyconnected binary counting chain of y (three) stages (where 2y (eight) is the binary number next less than n), means for applying output signals from the binary chain to a gate and to a circuit controlling the gate, which circuit has x (five) stable conditions, x being equal to the product of the odd factors of n, and is arranged x when in x - 2y- (one) of its stable conditions n to keep the gate closed, whereby the number of output signals passing through the gate when a number of pulses equal to the lowest common multiple of n and 2y (forty) has been applied to the counting chain, is equal to that number divided by n (four). The numbers quoted in brackets are the values appropriate to the described embodiment in which a simple chain of two-state devices 2, 3 and 4 delivers an output signal for every eight input signals both to a gate 5 and to a second chain of two-state devices 7, 8 and 9. This latter chain has feed-back connections which reduce its cycle to five, and is initially arranged to be in state " three " with stage 9 in the " off " condition holding gate 5 closed. Thus, only the second, third, fourth and fifth output pulses from the binary chain, 2, 3, 4 pass to the output terminal 6, so that four output pulses are delivered for every forty input pulses-a scaling factor of ten. A current meter is employed to indicate the precise value of the count, the reading of the meter, which extends up to fifteen units, being added to the number of " tens " output pulses to obtain the result.
Patent GB-629512-A (GB)
Title: Anti-splash device for toilet pans
IPC: A47K13/24
Filed: 1947-11-11
Abstract: 629,512. Splashing-preventing fittings. TROTT, G. H. Nov. 11, 1947, No. 29956. [Class 26] An anti-splash device for application to a toilet pan having a water-trap comprises a supporting frame A to be positioned in the body of the pan and to support a pivoted flap B above the level of the water, said flap B normally masking the water and constituting a splash guard but being movable under the action of flushing water to allow passage of the water and other matter for discharge from the pan. The flap is pivoted on aligned pins C and is returned automatically to the masking position after each pivotal movement thereof by means of a coiled compression spring D. In place of a spring, return movement may be effected by a counterweight. A stop or abutment E is mounted on the flap B or formed integrally therewith to limit the degree of pivotal movement upwards. The frame A rests in the pan in a horizontal or substantially horizontal plane and the flap B is adapted normally to lie in the same plane or in one parallel thereto. The flap has flutes or ridges F.