baber/WOPTO huggingface dataset:
Patent GB-1209002-A (GB)
Title: Process for the production of sulphuric acid
Inventor: HERBERT WILHELM
IPC: C01B17/765
Filed: 1969-04-09
Abstract: 1,209,002. Sulphuric acid preparation. METALLGESELLSCHAFT A.G. 9 April, 1969 [13 April, 1968], No. 18195/69. Heading C1A. Sulphuric acid is produced by oxidizing sulphur dioxide, contained in gases from roasting or combustion gases, over a catalyst and absorbing the resulting sulphur trioxide in sulphuric acid, passing the residual gases through granular activated carbon at 60‹ to 160‹ C. over which is trickled dilute sulphuric acid, and recirculating this sulphuric acid to the means for absorbing sulphur trioxide. The activated carbon may suitably be impregnated with a noble metal. Suitable equipment for carrying out the above process is shown in Fig. 2. The sulphur dioxidecontaining gas passes through conduit 1, heat exchangers 7 ,2a and 2b and catalyst beds 3a, 3b and 3c. The gas leaving stage 3c is rich in sulphur trioxide and passes into an interstage absorber 8 through which passes sulphuric acid. The scrubbed gas then passes via line 9 into a reactor 20 containing a bed of activated carbon. over which flows dilute sulphuric acid. This acid removes any remaining traces of sulphur dioxide and is then recirculated to the sulphur trioxide absorbing means 8 from which concentrated sulphuric acid having a concentration greater than 96% by weight may be removed via line 12.
Patent GB-1400821-A (GB)
Title: Thermoplastic sheet material
IPC: C08L95/00
Filed: 1972-04-19
Abstract: 1400821 Sheet material based on bitumen PERMANITE Ltd 19 April 1972 18225/72 Addition to 1271233 Headings C3N C3G and C3P A flexible waterproof sheet comprises a mixture of bitumen having a softening point of 70‹ C. or above, synthetic polymer compatible therewith and non-fibrous filling together with synthetic thermoplastic fibrous reinforcement filling, the said synthetic polymer constituting at most 50% by weight of the mixture and (a) comprising at least one of butyl rubberpolyethylene graft copolymer, polyethylene, a copolymer of ethylene with a comonomer other than vinyl acetate, and a mixture of chlorosulphonated polyethylene with one or more of polyvinyl chloride, vinylidene halide copolymer, atactic polypropylene, and styrenebutadiene block copolymer, (b) consisting of chlorosulphonated polyethylene or ethylenevinyl acetate copolymer, or (c) comprising a mixture which contains ethylene vinyl acetate copolymer and a polymer other than chlorosulphonated polyethylene. The fibrous synthetic thermoplastic filler may be polyester, nylon, polyacrylic, cellulose acetate, polypropylene, rayon, or polyvinyl chloride fibre. Mineral, glass, animal or vegetable fibres may be included. Fire resistance may be improved by adding antimony sulphide or antimony oxide and chlorinated paraffins. The non-fibrous filler may be carbon black, silica, polyester resin or calcium carbonate. The specific examples disclose compositions comprising bitumen, chlorinated paraffin, calcium carbonate, carbon black, polyester fibre and as synthetic polymer component:- chlorosulphonated polyethylene (1, 2); a mixture of chlorosulphonated polyethylene and atactic polypropylene wax (3); ethylene-vinyl acetate copolymer (4); a mixture of chlorosulphonated polyethylene and polyvinyl chloride (5); a mixture of chlorosulphonated polyethylene and a vinylidene chloride-acrylonitrile copolymer (6); a mixture of chlorosulphonated polyethylene and a butyl rubber-polyethylene graft copolymer (7); a mixture of chlorosulphonated polyethylene, a styrene-butadiene-styrene copolymer and atactic polypropylene (8); a mixture of ethylene-vinyl acetate copolymer and chlorinated polyethylene (9); high-density polyethylene (10); low-density polyethylene (11); an ethylene-propylene copolymer (12); an ethylene-propylene-1,3-butadiene terpolymer (13); and a mixture of chlorosulphonated polyethylene, ethylene-vinyl acetate copolymer and atactic polypropylene.
Patent GB-360907-A (GB)
Title: Process for the manufacture of esters of the leuco compounds of vat dyestuffs
IPC: C09B9/00
Filed: 1930-06-13
Abstract: Leuco compounds of vat dyes, esters of.--Sulphuric esters of leuco vat dyes are obtained by reduction of the vat dye by means of hydrogen sulphide, followed by esterification by means of sulphuric anhydride, or an agent liberating the same in the presence of a tertiary base, without isolation of the reduction products.  The reduction may be carried out in the presence of a tertiary base, such as pyridine, quinoline or dimethylaniline, with or without the addition of a diluent, sulphuric anhydride (or an agent yielding the same, such as chlorsulphonic acid or its methyl ester) being subsequently added to the reaction mixture, or the vat dye may be added to a mixture of sulphuric anhydride, or agent yielding the same, and tertiary base, reduction effected by hydrogen sulphide, advantageously at a low temperature, and esterification with continued stirring, raising the temperature if necessary.  Where reduction is effected before the addition of the sulphuric anhydride compound, it is sometimes advantageous to add ammonia or a primary or secondary base, such as butylamine, dibutylamine, cyclohexylamine, N-ethylcyclohexylamine or piperidine, to the tertiary base, or the tertiary base may be wholly replaced by ammonia or other amines in an indifferent diluent, such as chlorbenzene.  In examples the preparation of acid sulphuric esters and their salts from the following vat dyes is described: indigo, thioindigo, 5 : 5<1>-dibromindigo, 5 : 7 : 5<1> : 7<1>-tetrabromindigo, the product obtained by condensing b -naphthisatin - a  - chloride with a  - an - throl and subsequent treatment with sulphuryl chloride (Specification 205,790, [Class 2 (iii), Dyes &c.]), the green dye of Specification 289,154, [Class 2 (iii), Dyes &c.], (obtained from 1-brom-2 : 3 - dichlornaphthisatin - a  - chloride and 4 - methoxy-1-naphthol), 5<1> : 7<1> - dibrom - 2<1> - indol - 2 - thionaphtheneindigo, 2 - (4 : 6 - dimethyl - 5 : 7 - dibromindol) - 2<1> - (4<1> - bromnaphthalene) - indigo, 5 : 5<1>-dichlor - 7 : 7<1> - dimethylthioindigo, anthanthrone, Bz2 : Bz2<1>-dimethoxydibenzanthrone, 3 : 4 : 8 : 9-dibenzpyrene-5 : 10-quinone, dinaphthalenedioxidequinone (Specification 298,640, [Class 2 (iii), Dyes &c.]), anthraquinone-1 : 2-naphthacridone and di-p-chloranilidobenzoquinone.  Specifications 186,057, 202,632, and 231,889, [all in Class 2 (iii), Dyes &c.], also are referred to.
Patent GB-227742-A (GB)
Title: Improvements in surface condensers of the water-tube type
IPC: F28B1/02
Filed: 1924-07-30
Abstract: 227,742. Soc. des Condenseurs Delas. July 5, 1924, [Convention date]. Surface condensers having straight tubes 4 extending between tube-plates 2, 3 have intermediate supporting plates 9, 10, provided with apertures 13, 14, which may coincide with the usual tube-free lanes for steam flow, for the purpose of equalizing pressures in the compartments formed by the plates.
Patent GB-647027-A (GB)
Title: Improvements in or relating to fastening devices
Inventor: SHELLEY THOMAS
IPC: F16B5/10
Filed: 1948-07-07
Abstract: 647,027. Stud and - socket fastenings. ROLLS-ROYCE, Ltd. July 7, 1948, No. 18327. [Class 44] A stud-and-socket fastening comprises a slotted stud 16 carried by and rotatably and axially moveable in an opening in one of the parts 10 to be connected together, a cooperating locking spring 13 on the remote side of the other part 11 and an ejector spring 20 acting upwardly against a flange 16a on the stud. The ejector spring is accommodated within a sleeve member 18, Fig. 3, which has a flange 18a fitting in the depression in the part 10 and a series of lugs 19, alternate ones of which are bent inwardly and outwardly. The outwardly directed lugs 19a, Fig. 1, secure the sleeve 18 in position. The inwardly directed lugs 19b form an abutment for the spring 20 and also a stop for a flange 16c which limits the ejecting movement of the stud. By this means. when the stud is in the released position the parts are substantially flush on their contacting surfaces and may be slidden one over the other. Specification 604,017 is referred to.
Patent GB-530474-A (GB)
Title: A fastening device incorporating one or more nuts
IPC: F16B37/04
Filed: 1939-06-24
Abstract: 530,474. Bolting. SIMMONDS,O. E., and SIMMONDS DEVELOPMENT CORPORATION, Ltd. June 24, 1939, No. 18465. [Class 89 (i)] Nuts are attached to a member of a bolted joint difficult of access after assembly by a member 4, Fig. 1, that may be riveted or spotwelded to the member and has T-shaped parts 5 struck up therefrom engaging with play slots in the flanges 2 of the nuts which may be of the self-locking variety described in Specification 228,505, [Class 89 (i)]. When the member 4<1>, Fig. 3, serves for the attachment of one nut only the T-pieces may be so struck up that the space left by the heads forms the aperture for the bolt.
Patent GB-646358-A (GB)
Title: Improvement in superheterodyne radio altimeter or locator
IPC: G01S13/32
Filed: 1945-07-18
Abstract: 646,358. Radiolocation. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. July 18, 1945, No. 18478. Convention date, Oct. 20, 1943. [Class 40 (vii)] In a radiolocation system, employing a frequency - modulated transmission, the reflected signals from aerial 18 are combined in a modulator 17 with oscillations of the desired intermediate frequency produced by a local oscillator 21 and one or both side-bands are combined in a mixer 16 with energy from the transmitting oscillator 10 to give the intermediate frequency. These I.F. oscillations pass through an amplifier 24 to a detector 28 also fed by the source 21 to give a beat frequency corresponding to the change in frequency of the transmitter during the passage of the waves to the object and back. The output of detector 28 is thus a measure of the distance to the object and may give an audible note or operate an indicator 31. The speed of moving objects may similarly be determined, the transmitted waves in this case being of constant frequency and the output of detector 28 representing the change of frequency due to the Doppler effect.
Patent GB-433401-A (GB)
Title: Improvements in electromagnetic switches
IPC: H01H51/10
Filed: 1934-06-22
Abstract: 433,401. Electromagnetic switches. PAILIN, Ltd., F., and PAILIN, G., Buckley Street, Higher Openshaw, Manchester. June 22, 1934, No. 18495. [Class 38 (v)] An electromagnetic switch comprises an armature in the form of a rod adapted to bridge terminal pieces in the circuit of the electromagnet which is adapted to attract the rod to break the said circuit on overload conditions and to retain the rod in contact with the poles of the electromagnet owing to the residual magnetism, handoperated means being provided to separate the electromagnet and rod to reclose the circuit. As shown in the Figure, the rod a normally rests in the trough-shaped upper end of fixed contacts b bridging the contacts and completing the circuit of an electromagnet winding, (not shown), mounted on a limb of a U-shaped magnetic core d'. On overload conditions occurring the rod a is attracted to the dotted position in which it engages the poles of the electromagnet, so breaking the circuit of the electromagnet winding. The rod is, however, retained in the attracted position by remanant magnetism in the coil until separated by manual operation of a lever k which on depression bears against a fixed block n and swings the electromagnet to the left. To permit of this movement the electromagnet is supported by blade springs f the movable structure having pins h bearing on fixed blocks j so that the latter act as fulcra during the movement of the electromagnet. The rod o is prevented from following the full movement of the electromagnet by engaging the walls o of fixed insulating blocks and on detachment from the electromagnet pole faces the rod falls again on to the fixed terminals b. The electromagnet circuit is not, however, again completed until a depending contact pin q<1> carried by the electromagnet structure engages the side face of a contact block g when the electromagnet is fully restored to its operating position. The fixed contacts may, according to the Provisional Specification, consist of mercury cups engaged and bridged electrically by the bar armature.
Patent GB-343857-A (GB)
Title: Improvements in and relating to rotary compressors
IPC: F04D29/46
Filed: 1930-06-18
Abstract: 343,857. Centrifugal pumps. GUTEHOFFNUNGSHœTTE OBERHAUSEN, AKT.-GES., Oberhausen, Rhineland, Germany. June 18, 1930, No. 18591. Convention date, June 19, 1929. [Class 110 (i).] A suction inlet valve comprises a ported cylindrical member 12 which is carried by a support 3 mounted to rotate on the shaft of the compresser. The valve is operated by a differential piston the smaller surface of which is always loaded while the larger can be loaded or relieved by a three-way cock 15. Baffles are provided on each side of the member 12 to form fluid channels which narrow until reaching member 12 and then open out again in streamline form.
Patent GB-774346-A (GB)
Title: Improvements in or relating to articulated slip joint connections for dental instruments
IPC: A61C1/18
Filed: 1955-06-28
Abstract: 774,346. Dental engines. KALTENBACH, A., and HOFFMEISTER, E. June 28, 1955 [Oct. 5, 1954], No. 18662/55. Class 81(2) A slip joint connection incorporates a step-up friction wheel gearing and the driving pulley 1 is formed with an annular axially projecting rim 2, lined with friction material 3, and this bears against a driven roller 5 on the drive shaft 4. , This shaft is mounted in hard metal or sapphire, selfaligning bearings 13. The pulley 1 is mounted on a short spindle 8 on a pivot 12 which is perpendicular to the axis of the pulley, and, by this means, the friction surfaces are held in engagement by the tension in the driving cord and an increased load results in increased frictional engagement up to the point of slipping, on overload.
Patent GB-530729-A (GB)
Title: Improvements in or relating to machines or devices for delivering tickets and the like
IPC: G07B5/02
Filed: 1939-06-29
Abstract: 530,729. Ticket issuing machines. GARRETT & CO., Ltd., C., and OLIVER, C. L. June 29, 1939, No. 18925. [Class 106 (iii)] In a machine in which a feeding device intermittently traverses the ticket at each delivery, a carriage is guided lengthwise of the ticket slideway and a one-way strip feed member movable with the carriage is moved together with the latter by a cam and cam-follower mechanism. The reciprocating carriage 16 is driven by a projection 18 engaging in a cam groove 13 in the rotating cylinder 11. A spring finger or fingers 20<SP>1</SP> engages with a hole in the ticket strip 15 on the upward stroke but slides over the strip on the return movement. A pivoted plate 41 grips the strip 15 to prevent backward slipping. If no strip is present the end of the plate falls into recess 43 and means are actuated to lock the driving shaft 12. A frame 29 carrying a cutting knife is operated by a cam 27.
Patent GB-1099643-A (GB)
Title: Preparation of alkylidene diureas
IPC: C07C275/06
Filed: 1965-05-05
Abstract: Alkylidene diureas are made by the reaction of solid urea and isobutyraldehyde, n-butyraldehyde or propionaldehyde, in the ratio of from 0.6 to 1.1 moles of aldehyde per mole of urea, in the presence of an aqueous acid as catalyst, with stirring, in a reactor which is closed but not pressurized, the reaction being carried out at a temperature from the boiling point of the aldehyde in the reactor to a temperature 20 DEG  C. higher.
Patent GB-385879-A (GB)
Title: Improvements in or relating to bead fabrics
IPC: D04D7/02
Filed: 1932-07-05
Abstract: 385,879. Trimmings. BRUNO, (nÚe GIRAUD), M., 80, Rue de Maistre, Paris. July 5, 1932, No. 19014. Convention date, July 11, 1931. [Class 141.] A bead fabric for ladies' handbags &c. comprises an open network formed by metallic or other beads 4 strung in vertical rows on double strings 3, and beads 4A strung in rows on horizontal strings 5 which pass below the vertical strings, some of the beads 4A fitting between the vertical strings. Additional strings are threaded through the beads 4A and passed above the vertical strings. Additional beads 6 strung on additional strings fill some of the spaces in the open network, thus producing a lace-like effect. The beads may be of different shades and shapes.
Patent GB-520877-A (GB)
Title: Improvements in or relating to compressors
IPC: F04B39/00
Filed: 1939-06-30
Abstract: 520,877. Compressors ; valves. BOSCH GES, R. June 30, 1939, No. 19036. Convention date, July 7, 1938. [Class 8 (i)] [Also in Group XXIX] In a compressor, particularly for refrigerators, the suction valve 15 has a small aperture 16 whereby the working chamber of the compressor is in constant open communication with the'source of the medium to be compressed. The arrangement permits the compressor to be started up by a small starting torque.
Patent GB-681340-A (GB)
Title: Improvements relating to milling machines
IPC: B23Q1/60
Filed: 1951-08-13
Abstract: 681,340. Copy-milling. DECKEL, H., and DECKEL, F. W. Aug. 13, 1951 [Sept. 13, 1950], No. 19045/51. Class 83 (iii). In a copy-milling machine, a pair of supports 22, 24 carrying compound slide tables 34, 36 for the work 49 and template 50 are slidable on vertical ways 18, 20 on an intermediate member 14 which is itself slidable on vertical ways 12 on the machine column. The vertical setting range of the tables is thus increased without increasing the machine dimensions and the same principle may be applied where the supports 22, 24 and the member 14 are slidable horizontally. The tables 34, 36 can be connected together in any position by a coupling 42 so that the setting means for one may control the other. The tool 44 and tracer 46 are mounted on an articulated linkage 43 controlled by a handle 48.
Patent GB-667897-A (GB)
Title: Parasiticide composition
IPC: A01N57/00
Filed: 1950-07-31
Abstract: 667,897. Parasiticides. DOW CHEMICAL CO. July 31, 1950 [Aug. 4, 1949], No. 19104/50. Class 81 (i). A parasiticide composition comprises tetraethyl pyrophosphate and the 4-chlorophenyl ester of 4-chlorobenzene sulphonic acid. The toxicant mixture may be employed with a carrier such as water, a finely-divided solid, an organic solvent, a wetting and dispersing agent or any suitable combination of any of these. Specified solid carriers are bentonite diatomaceous earth, talc, clay, wood flour and pyrophyllite. Specified wetting and dispersing agents are alkyl aryl sulphonates, dioctyl sodium sulphosuccinate, polyoxyethylene sorbitol oleate-laurates, dimeric or other alkylated aryl polyether alcohols and polyoxyethylene derivatives of sorbitan trioleate. According to an example, 4'-chlorophenyl 4-chlorobenzene sulphonate, an alkyl aryl sulphonate, a compounded substituted, benzoic alkyl sulphonic acid, and Fuller's earth are ground to form a wettable powder, tetraethyl pyrophosphate and a dimeric alkylated aryl polyether alcohol are dissolved in xylene, and the powder and solution are dispersed in water.
Patent GB-478128-A (GB)
Title: Improvements relating to transfer mechanism for price computing and indicating mechanism
IPC: G06C15/28
Filed: 1936-07-10
Abstract: 478,128. Transfer-mechanism. AVERYHARDOLL, Ltd., and FRASER, J. July 10, 1936, No. 19117. [Class 106 (i)] A plate 5 carrying two teeth is secured to a disc 5a attached to a pence drum A, the teeth engaging a pinion 6 integral with a pinion 8 gearing with a pinion 9 on a units-of-shillings drum B. The pinion 8 is larger than the pinion 6 so that the drum B is moved forward rapidly towards the end of a rotation of the drum A. Specification 478,130 is referred to.
Patent GB-1350026-A (GB)
Title: Evaporation cooling system for metallurgical furnaces
IPC: C21B7/10
Filed: 1972-04-25
Abstract: 1350026 Furnace cooling systems E W RONDE 25 April 1972 [6 May 1971] 19160/72 Heading F4B A cooling system for a metallurgical furnace comprises a multiplicity of cooling boxes, connected in chains, the chains being arranged in groups, each group being connected to a common steam collector ring drum by risers 15 and a down pipe 8, there also being provided a top ring main 16 which may be connected to any of the risers 15 by way of 3-way valves 12. The cooling boxes of a group are arranged as shown in eight chains of three. The lowermost of each chain is connected through a valve 13 to a header pipe 9 to which the down pipe 8 is normally connected via valve 20. Also connected to the steam collecting ring 1 are a feed water pipe, a steam dome 2, a control tank 3 and overflow weir 17. A bottom ring main 10 below the array of cooling boxes can be connected to the header pipe 9 by opening valve 11. An emergency water feed 6 can be connected to the main 10 and a drain port 5 allows sludge and scale to be removed. The top ring main 16 can be connected to a drain 18 by opening an associate valve, or to a source 4 of compressed air. There are also safety valves 29. In normal operation down pipe valve 20 and valves 13 are open and valves 12 are set to connect the top cooling boxes both to the risers 15 and to the top main 16 so that all the risers are connected together and all the down pipes 8 are connected together. This results in a stabilization of the natural circulation of cooling water. Connections 24 may be provided for by-passing any cooling boxes which are found to be leaking. When it becomes necessary to use emergency water for cooling a group of boxes, only the corresponding valves 11 are opened; all the others remain closed. The valves 12 of the group are set so that the cooling chains connect only with the top main. All the other valves are set to connect only with the risers 15. The emergency water valve 6 and the valve to drain 18 are opened. Leak tests are made by opening appropriate valves to apply compressed air or steam from 4 to the cooling chains to be tested.
Patent GB-147146-A (GB)
Title: Improvements in or relating to photometric apparatus
IPC: G01J5/60
Filed: 1920-07-07
Abstract: 147,146. Siiemens & Halske Akt.-Ges. July 8, 1919, [Convention date]. Addition to 112,614, Photometric apparatus.-Photometric apparatus as described in the parent Specification is used for measuring the temperature of incandescent bodies, a scale of temperature and a reading device being provided in connexion with the means for adjusting the colour screens. The apparatus comprises a casing g containing a standard light l, and red and blue-green colour screens fr, fg, which are carried in a movable frame r. The position of the frame is adjustable by means of a screw s having a knob k n carrying a pointer z working over a dial a. The incandescent body is placed behind a screen n, and the illumination of the screen is adjusted by shutters i until it is equal to the illumination of a ground glass screen m. The comparison of the illumination is made by means of a Lummer-Brodhun prism e and an eye-piece c. The colour screens are then adjusted so that the colour of the standard light is the same as that of the incandescent body, and the temperature is read off. The apparatus may be modified so that the illumination of the screen m is adjustable. The Specification as open to inspection under Sect. 91 (3) (a) refers to a construction of apparatus comprising three colour screens as described in the parent Specification. This subject-matter does not appear in the Specification as accepted.