baber/WOPTO huggingface dataset:
Patent GB-555771-A (GB)
Title: Stabilised vacuum tube variable frequency oscillators
IPC: H03B5/28
Filed: 1942-04-28
Abstract: 555,771. Valve generating circuits CLIFFORD, F. G. April 28, 1942, No. 5659. [Class 40 (v)] In a generator including a bridge in the feedback path consisting of two resistive ratio arms and two reactive arms one comprising a resistance in series with a capacity and the other a resistance in parallel with a capacity, the bridge includes in one or both ratio arms a non-linear resistance to stabilize the amplitude of the oscillations generated. The arrangement is such that no direct current can flow through the non-linear resistance and the current oscillations fed to the input diagonal of the bridge are in phase with the voltages produced across the output diagonal. Frequency is controlled by simultaneously varying the electrical quantities in each of the reactive bridge arms. When a single stage amplifier is used a transformer is used to obtain the necessary phase shift, Fig. 1 (not shown). Fig. 2 shows a phase changing valve used to provide the phase shift and associated with the bridge elements R1 C1, R2 C2, R4 and L which may be a lamp. For low frequencies the bridge is re-arranged so that the arms R1 Cl and R4 are interchanged to avoid a high resistance in the valve anode circuit. Fig. 4 shows an arrangement in which a buffer output stage is used without substantially altering the gain or phase shift. Specification 510,379 is referred to.
Patent GB-978334-A (GB)
Title: Method and apparatus for the gasification of coal dust
IPC: C10J3/46
Filed: 1962-02-14
Abstract: <PICT:0978334/C4-C5/1> A process for gasifying coal dust in suspension by means of oxygen in co-current with or without steam, comprises performing the gasification at such a temperature, e.g. 1600 DEG  C., that most of the ash evaporates, and cooling the mixture of ash vapours and gas produced by water sprays 6 in the apparatus to condense and granulate the ash for disposal in the solid state via a lock system 8.  The coal, oxygen and steam enter through opposed nozzles 3, gas leaving at 7, and any liquid slag produced dropping off an edge 4 into a chamber 5.  The apparatus is preferably operated at 5 to 35 atmospheres pressure.
Patent GB-996425-A (GB)
Title: Improvements in or relating to mattresses
Inventor: BLECKER RAYMOND HENRY
IPC: A47C27/05
Filed: 1964-02-11
Abstract: 996,425. Spring mattresses. SIMMONS CO. Feb. 11, 1964, No. 5708/64. Heading A4M. A mattress comprises an assembly of vertical coil springs 15, 17, a fly sheet 39 covering both top and bottom, a continuous boxing strip 21 surrounding the assembly, fabric flaps 35 secured to both edges of the boxing strip 21, a wire loop 37 overlying each fly sheet 39 and extending around the edges of the assembly, means, e.g. rings 41, for securing each fly sheet 39, flap 35 and wire loop 37 combination together with an adjacent end convolution of a coil spring 15, a padding layer 43 overlying each fly sheet 39, and an outer cover 49 secured, as at 61, to the boxing strip 21. The boxing strip 21 comprises a padding layer 25 secured between a sturdy, ticking layer 23 and a textile layer 27, and doubled over muslin flaps 35 are tacked, as at 33, to the boxing strip 21. In assembly the mattress, the edges of the padding layer 43 and of an intermediate sheet 45 are folded down between the flap 35 and the boxing strip 21 prior to securing the quilted outer cover 49 to the boxing strip 21. In another embodiment (Fig. 5, not shown), a tufted but unquilted mattress includes two layers of padding 43. Specification 774,265 is referred to.
Patent GB-373619-A (GB)
Title: Improvements in apparatus for grinding and polishing bifocal and other lenses
IPC: B24B13/00
Filed: 1931-02-24
Abstract: 373,619. Grinding and polishing lenses. TAIG, W. A., 29, St. George's Road, Golders Green, London. Feb. 24, 1931, No. 5721. [Class 60.] In a machine for grinding and polishing onepiece bifocal and other lenses, the tool is so mounted that relative oscillation between the tool and work is free to take place about an axis parallel to the working face of the tool but not about any other axis inclined thereto. The tool 1 is secured to a driving shaft 2 rotated by a pulley 5 in bearings 3 on a housing 6 which is supported by conical pivots 8 on a frame 9 provided with arms 10 pivoted at 11 to vertical links 12 pivoted to the machine frame 15 at 13. A roller 18 concentric with the pivots 8 is kept in contact with a fixed vertical pillar 19 by the tension of the driving belt on a pulley 17 during grinding to position the tool in relation to the work 20. A belt 16 connects the pulleys 5, 17. The work 20 is secured to a holder 21 attached to a conical stem 22 secured in a shaft 23 which is driven in the opposite direction to the tool by a pulley 26 and is mounted d in bearings 24 on a slide 28 vertically adjustable by a nut and screw 30 on a carrier 29. An extension 29a on the carrier is pivoted by a stud 39 to a vertical bracket 37 on the machine frame, holes being provided in both the extension and bracket, as shown in Fig. 4, to suit the radius of curvature desired on the work. A slot 29b in the machine frame co-operates with a bolt 29c on the carrier 29 to secure the latter at the required inclination to the axis of rotation of the tool. The vertical adjustment of the work is effected by means of a gauge 35, Figs. 3 and 4, of the required radius of curvature and provided with a pin 34 adapted to enter the pivot 39, the work being moved until it is in contact with the rounded end 38 of the gauge, as shown in Fig. 3. The inclination of the work axis is arranged so that it meets the tool axis at the centre of the pivot 39. During operation, the tool is free to oscillate about the pivots 8 but not about any other axis. A tool 1 of the size shown in Fig. 1 is used for grinding the outer portion of a bifocal lens and a smaller tool, as shown in Fig. 3, which has contact only with the central portion of different curvature, is used for the central portion. Trifocal or multifocal lenses may also be produced in this manner.
Patent GB-772688-A (GB)
Title: Contra rotation radial flow turbine for the driving of electric generators
IPC: F01D1/28
Filed: 1955-02-28
Abstract: 772,688. Elastic fluid turbines. SVENSKA TURBINFABRIKS AKTIEBOLAGET LJUNGSTROM. Feb. 28, 1955 [March 26, 1954], No. 5874/55. Class 110 (3). The generators 4 are driven by a contrarotating radial-flow turbine 1 and axial-flow turbines 3 arranged in series therewith. The shafts are supported by bearings 11 arranged between the axial and radial-flow rotors and resiliently mounted bearings 12. The axialflow rotors are bolted to the generator shafts and have integral shafts bolted to the shafts 2 of the radial-flow rotors.
Patent GB-912450-A (GB)
Title: Method and apparatus for separating particles suspended in a liquid
Inventor: WALLEN EMIL OLAF LENNART
IPC: B03B1/00
Filed: 1961-02-17
Abstract: 912,450. Recovery of paper-making fibres from liquid suspensions. LEJE & THURNE A.B. Feb. 17, 1961, No. 5895/61. Class 96. [Also in Group I] A suspension of fibres (e.g. cellulosic), is withdrawn by a pump 13 through a pressurereducing valve 14, optionally controlled as shown by the liquid level in a container 12, and is fed to a vessel 1 from which a pump 7 withdraws, at 3, fibre concentrate and air to maintain a sub-atmospheric pressure in the vessel, and from which purified liquid is withdrawn at 4 by a pump 17. The liquid level in vessel 1 is maintained constant by matching liquid outflow at 4 with inflow. Further control by a valve 11 and float 10 may be provided. In Fig. 2, not shown, the suspension is gravity fed, pump 13 being dispensed with. Further features of that embodiment are: a separate pump is provided for evacuation of air from above the liquid in vessel 1; valve 11 is connected to a float in pocket 6 to control level therein; and a valve beyond pump 17 is connected to a float corresponding to float 10. In either case pump 17 may be replaced by a valve-controlled downpipe.
Patent GB-370136-A (GB)
Title: Improvements relating to the conversion of olefines into alcohols
IPC: C07C29/06
Filed: 1931-02-25
Abstract: Alcohols are obtained by causing a mixture of an olefine and steam to contact in the vapour phase with a body of material such as broken pumice serving as a carrier or surface distender to sulphuric acid of strengths varying from 60 to 85 per cent acting as catalyst in conjunction with material known to promote the absorption of the olefine in the acid, at a temperature not exceeding about 200 DEG  C. and at atmospheric or higher pressure. Gas mixtures containing olefines may be used instead of pure olefines.  The proportion of steam should be sufficient both to take part in the reaction and to maintain the concentration of the acid constant.  Examples are given, in which ethyl alcohol is obtained by passing ethylene and steam over pumice containing 60 per cent by weight of sulphuric acid and 5 per cent of silver sulphate at temperatures of 145, 145, 165 and 170 DEG C. and pressures of 1, 2, 9, and 15 atmospheres respectively, the residual ethylene being recirculated.  When obtaining secondary and tertiary alcohols from higher olefines such as propylene and butylene, the temperature and concentration of the acid is progressively lower, the greater the molecular weight of the olefine. Specification 368,051 is referred to.
Patent GB-746237-A (GB)
Title: Electric multichannel pulse code communication systems
IPC: H03M1/00
Filed: 1954-03-01
Abstract: 746,237. Pulse code modulation systems; pulse circuits. STANDARD TELEPHONES & CABLES, Ltd. (Federal Telecommunication Laboratories, Inc.). March 1, 1954, No. 5897/54. Classes 40 (5) and 40 (6). The time intervals between the individual pulses of code groups, derived from signal samples, are all increased in the same ratio, to provide a rest period for the coder between each coding operation. In the embodiment described a single cathode-ray tube coder in known manner produces six-unit binary code groups from a plurality of time-divided channel samples and the pulse repetition periods are doubled before the code groups are fed to the output line, Fig. 1 (not shown). The negative pulses from the coder are fed through valve 41 as positive pulses to a delay line 36 having twelve tappings 1 ... 12, spaced apart by one code pulse repetition period of the incoming group. One period prior to the first pulse of each group a positive keying pulse is fed through valve 38 as a negative pulse to the line and opens gating circuits 37 ... 37E in succession as it reaches the tappings 2, 4, 6, 8, 10, 12, respectively. The gating circuits are fed respectively with code pulses from those tappings at which the desired pulse occurs when the gate opens, that is, in the example shown, the tappings 1, 2, 3, 4, 5 and 6. For instance, the fourth code pulse has reached tapping 4 when the key pulse has reached tapping 8 and opened the fourth gating circuit. The intervals between the output code pulses from the gating circuits are thus doubled in length. Each gating circuit comprises a double triode 39, 44, the triode 39 being rendered non- conducting by the negative key pulse to remove the prohibitive bias on the triode 44 due to the common cathode resistor 46. The code pulse applied to the grid 43 of triode 44 therefore appears at its anode 47 which is connected, with the same point on all the gating circuits, to the output line. A similar arrangement can be used to increase the intervals between the code pulses in a ratio other than two. Specifications 509,820 and 511,222 are referred to.
Patent GB-555684-A (GB)
Title: Improvements in and relating to rotary plug cocks and like closure members
IPC: F16K27/06
Filed: 1942-05-01
Abstract: 555,684. Plug-cocks. ASCOT GAS WATER HEATERS, Etd., and FRIEDMAN, L. May 1, 1942, No: 5905. [Class 135] A conical or rotary cylindrical plug cock has a plug made of cast iron, plastic or other cheap material covered with a thin sleeve of bronze, brass or other corrosion-resisting material, the housing containing the seating for the plug being of cast iron or other cheap material. In the form shown in the Figures a conical cast iron or plastic plug is covered with a thin sleeve 13 of bronze or brass sleeve pressed thereon and secured by swaging over lugs 15. In addition the sleeve may be soldered to the plug in which case the base is provided with grooves 14 to receive the solder. The sleeve is formed by bending a strip of sheet metal to the shape desired the meeting edges being dovetailed together as shown. Grooves or indentations may be provided in the plug to receive and engage with corresponding portions of the sleeve.
Patent GB-1012254-A (GB)
Title: Improvements in methods of embossing the surfaces of fibrous material shaped components
Inventor: SCHALLENBERG JOSEF
IPC: D21H27/02
Filed: 1964-02-12
Abstract: 1,012,254. Embossing. DEUTSCHE FIBRIT GESELLSCHAFT, EBERS & DR. MULLER m.b.H. Feb. 12, 1964, No. 5905/64. Heading B6J. Fibrous material is treated while moist with a water-compatible synthetic resin capable of setting hard, and then subjected to a drying process under the action of a heated embossing die. The resin may be a phenol-cresol ureaformaldehyde or melamine resin, applied as a powder or in solution, and mixed with paraffin wax. The treatment may be on one side only to allow escape of steam, or on both sides if equal expansion of both sides is necessary. Lacquer may be sprayed on the embossed surface. The die is rear-lined with heatable steel.
Patent GB-540884-A (GB)
Title: Improvements in or relating to the control of electric circuits by means of variable reactors
IPC: H02P23/00
Filed: 1940-04-02
Abstract: 540,884. Automatic control systems. BAGNALL, R. I., and FOSTER TRANSFORMERS & SWITCHGEAR, Ltd., (formerly FOSTER ENGINEERING CO., Ltd.). April 2, 1940, Nos. 5923 and 10188. [Class 38 (iv)] Voltage.-The voltage of an A.C. circuit 8 is regulated to constancy by an induction disc motor or relay having operating coils 4, 5. The coil 4 is in series with a resonant circuit comprising condenser 3 and variable saturable reactor 1. Upon variation of voltage the current in the saturating winding 2, which current is obtained from a rectifier 7, changes and alters the phase of the current in the coil 4 relatively to that in coil 5, whereupon the motor effects the necessary regulation. The constant phase of the current in the coil 5 is adjusted by a condenser 9, and if desired by a phase shifter 6. Upon deviation of voltage the phase of the current in coil 5 can be changed in the opposite direction to that in coil 4 by a saturable reactor 12 connected in parallel with the condensor 9. The change in the saturating current obtained from the rectifier 7 can be enhanced by causing it to vary the saturation of a reactor 10 in series with the rectifier. Another resonant circuit 11, 31 in parallel with the circuit 1, 3 can be added so as to prevent regulation until a predetermined variation has occurred.
Patent GB-294290-A (GB)
Title: Improvements in or relating to pneumatic tyres and rims therefor
IPC: B60B21/12
Filed: 1927-01-20
Abstract: 294,290. Dunlop Rubber Co., Ltd., and Fellowes, F. Jan. 20, 1927. Divided on 294,186. Tyre attachments to rims.-A flap a or a series of tabs formed on one or both beads of a tyre cover is clamped to the well-base rim b by means of the valve-stem, or by separate screw-bolts &c. Specification 22669/92 is referred to.
Patent GB-1270491-A (GB)
Title: Process for the preparation of dehydrolinalool
Inventor: BARRE CHARLES
IPC: B01J23/00
Filed: 1970-02-06
Abstract: 1,270,491. Dehydrolinalool. RHONEPOULENC S.A. 6 Feb., 1970 [7 Feb., 1969], No. 5948/70. Heading C2C. Dehydrolinalool is liberated from its alcoholate contained in a reaction mixture resulting from the ethynylation of 2-methylhept-2-en-6- one in the presence of an alkali metal base and a substituted amide solvent, by treating the reaction mixture with 2-10 mole of water per gram atom of alkali metal present, and separating the alkaline aqueous phase from the organic phase containing the dehydrolinalool.
Patent GB-1492854-A (GB)
Title: Method and apparatus for pre-incubating eggs
IPC: A01K41/00
Filed: 1975-02-12
Abstract: 1492854 Incubators HGHM PAS 12 Feb 1975 [13 Feb 1974] 5957/75 Heading AIM An incubator comprises chambers 2, 3 and a continuously moving conveyor 1 which introduces to one end of each chamber a plurality of egg-tray stacks 6 suspended from conveyor 1, carries them around a loop path and after an eighteen day incubation period, discharges the stacks from the other end of the chamber. For optimum contact with warm air, which is preheated, aspirated and distributed by pulsators 9, the trays are carried at 45 to the horizontal suspension path. On passing each time through bends 4, 5 the trays are tipped through 90 by guides 7, Fig. 3 which are positioned at the bends and are inclined to the horizontal. To avoid interference between neighbouring stacks, the conveyor speed is arranged to be greater on the bends 4, 5 than on the straight parts. One sixth of the total capacity of the chamber is introduced and an equal number of stacks discharged every three days, and each new stack is positioned behind a stack which was introduced three days before so that a favourable heat exchange occurs between exothermic eggs, and endothermic eggs, i.e. those last introduced.
Patent GB-379231-A (GB)
Title: Improvements in motor fuels
IPC: C10L1/18
Filed: 1932-02-29
Abstract: Motor spirit consists of petrol, benzol, or other usual fuel with an addition of 0.5 per cent or more of one or more aliphatic alcohols containing at least 8 carbon atoms.  Solid alcohols are preferably added as a solution in high boiling hydrocarbons. Alcohols specified are those obtained by high pressure reduction of natural fats, by high pressure hydrogenation of carbon monoxide, and from natural waxes, e.g. sperm oil or bottle-nosed whale oil.  Olein alcohol obtained as a cold-resisting liquid by filtering or pressing is specially mentioned.
Patent GB-689426-A (GB)
Title: Process and device for making metal pellets, particularly for shotguns
IPC: B21H1/14
Filed: 1951-03-13
Abstract: 689,426. Making metal pellets. PROPERZI, I. March 13, 1951 [May 12, 1950], No. 6076/51. Classes 83 (ii) and 83 (iv). Rolling; shearing.-In a method of making small pellets &c. for shotguns &c. wire of larger diameter than that of the pellets is first rolled into a strip and then rolled into a thinner strip with opposed semi-spherical projections which. are finally punched out as pellets. A lead alloy wire 6 is reduced to a strip 7 by a roll pair 3, 4 and fed through a guide 8 to a machine for forming the pellets and substantially the same as that disclosed in Specification 741,106 but which forms staggered rows of opposed semi-spherical projections 16 on the strip which are severed from the strip by camactuated punches 20 on a roller 17 coacting with apertures 21 in a roller 18. The rolls 3, 4 are freely mounted, the pass being adjusted by screws 5. The edges of the rolls 3, 4 are bevelled to facilitate the insertion of the end of the wire 6.
Patent GB-1419756-A (GB)
Title: Metallurgical apparatus
IPC: F27D11/08
Filed: 1974-02-11
Abstract: 1419756 Duplex steelmaking plant INSTITUT DE RECHERCHES DE LA SIDERURGIE FRANCAISE 11 Feb 1974 [21 Feb 1973] 06105/74 Heading C7D [Also in Divisions F3 and F4] Iron refining apparatus comprises an arc furnace 1 with a horizontal pivot axle 16 disposed between discharge spouts 19 and 20, the latter feeding the inlet channel of an induction furnace 2 tilting about an axis 25. The spout 19 discharges into a ladle 26 and a spout 24 on furnace 2 into a ladle 27, charge material being added to furnace 1 through a shoot 15. The electrodes 5 are supported by arms 7 movable along guide columns 8 and are connected by flexible cables 11 to a transformer 12. Melting and refining can be performed in the furnace 1 or both furnaces can be used as a duplex continuous system.
Patent GB-734801-A (GB)
Title: Improvements in and relating to derivatives of pyrimidine and the manufacture thereof
IPC: C07D239/49
Filed: 1953-03-06
Abstract: The invention comprises compounds of the general formula <FORM:0734801/IV (b)/1> in which R1 is a methoxy or ethoxy group, R2 is an ethoxy group or a chloro or bromo substituent and R3 and R4 are hydrogen or methoxy or ethoxy groups, or chloro or bromo substituents.  Such compounds are obtained by reacting guanidine with an appropriate a -formyl-hydrocinnamic ester and converting the 2-amino-4-hydroxypyrimidine so formed by chlorination and amination or thiation and amination, analogously to the methods of Specifications 671,926 and 671,927 in conjunction with the method of Specification 598,514, to the desired 2,4-diaminopyrimidine.  In examples: (1) ethyl 3,4-dimethoxy-5-bromocinnamate (prepared by esterification of the acid) is reduced with a Raney nickel catalyst to ethyl g -3,4-dimethoxy-5-bromophenyl propionate, which is reacted with ethyl formate in the presence of sodium to give the a -formyl derivative, and the product is reacted with guanidine to give 2-amino-4-hydroxy-5-(3,4 - dimethoxy - 5 - bromobenzyl) pyrimidine. This compound is chlorinated by reaction with phosphoryl chloride and phosphorus pentachloride and the product is heated under pressure with ethanolic ammonia to give 2,4-diamino - 5 - (3,4 - dimethoxy - 5 - bromobenzyl) pyrimidine; (2) the sodium formyl compound prepared from ethyl-2-methoxy-5-chlorohydrocinnamate, ethyl formate and sodium is condensed with guanidine to give 2-amino - 4 - hydroxy - 5 - (2 - methoxy - 5-chlorobenzyl) pyrimidine, which on treatment as in (1) with phosphoryl chloride and phosphorus pentachloride followed by alcoholic ammonia gives 2,4 - diamino - 5 - (2 - methoxy-5-chlorobenzyl) pyrimidine; (3) following the procedure of (1) ethyl 3-ethoxy-4-methoxyhydrocinnamate is formylated, the formyl compound condensed with guanidine and the 2-amino-4-hydroxypyrimidine obtained gives by chlorination and amination 2,4-diamino-5-(3 - ethoxy - 4 - methoxybenzyl) pyrimidine; (4) ethyl 3 - ethoxy - 4 - methoxy - 5 - bromohydrocinnamate, ethyl formate and sodium are reacted to give 2-amino-4-hydroxy-5-(3-ethoxy - 4 - methoxy - 5 - bromobenzyl) pyrimidine.  This compound on chlorination, followed by amination as in (1) gives 2,4-diamino - 5 - (3 - ethoxy - 4 - methoxy - 5-bromobenzyl) pyrimidine; (5) ethyl 3-ethoxy-4-methoxy - 5 - bromo - x - chlorohydrocinnamate is formylated and the formyl derivative reacted with guanidine as in (1) to give 2-amino-4 - hydroxy - 5 - (3 - ethoxy - 4 - methoxy - 5-bromo - x - chlorobenzyl) pyrimidine which by chlorination and amination gives 2,4-diamino - 5 - (3 - ethoxy - 4 - methoxy - 5 - bromo-x - chlorobenzyl) pyrimidine; (6) ethyl 3,4-dimethoxy - 5 - chlorobenzyl - hydrocinnamate is formylated, the formyl derivative reacted with guanidine to give 2-amino-4-hydroxy-5-(3,4 - dimethoxy - 5 - chlorobenzyl) pyrimidine, and the latter, by chlorination and amination, converted to 2,4-diamino-5-(3,4-dimethoxy-5-chlorobenzyl) pyrimidine.
Patent GB-560664-A (GB)
Title: Improvements in or relating to windscreens for vehicles
IPC: B60J1/02
Filed: 1942-05-11
Abstract: 560,664. Wind screens or deflectors. BAYNES, L. E., and MUNTZ & CO., Ltd., A. May 11, 1942, No. 6371. [Class 20 (iii)] [Also in Group XXXIII] An aerofoil-shape.d deflector 15 is arranged round the edge of a windscreen 11 of a vehicle or aircraft and is spaced from the edge, and so shaped as to direct the airstream parallel to the surface of the vehicle body 13. A long rectangular windscreen, such as for use in an automobile, is provided with rounded corners. The deflector is attached by thin plate-like members 18 set edge-on to the air stream.