baber/WOPTO huggingface dataset:
Patent GB-1436950-A (GB)
Title: Pool heating circuits
IPC: F24H1/52
Filed: 1973-05-30
Abstract: 1436950 Water heaters; tubular heat exchangers M A MAY 16 May 1974 [30 May 1973] 25632/73 Headings F4A and F4S In a swimming pool heating circuit, water is circulated between a pool (not shown) and a boiler unit 10 through suction inlets 2 past a valve 4 into a filter unit 6 and back through the valve 4 to an inlet line 7 leading to a heat exchanger 8 located in the boiler unit 10. The heat exchanger consists of a bundle of tubes 22 mounted in a horizontal manner and immersed in the water in the boiler unit. The boiler unit 10 is replenished from an expansion tank 12 and cold feed inlet pipe 14. The expansion tank may be located on top of the boiler unit and the latter unit may be provided with a series of vertically arranged tubes 32 through which hot flue gases pass. The heat exchanger 8 may be formed of a bundle of tubes 22 mounted in tube locating plates 23 sealingly received within end plates 21 with the interposition of 0-rings 24. The end plates 21 are interconnected by tie rods (26) which have been omitted in Fig. 2.
Patent GB-502615-A (GB)
Title: Improvements in or relating to electric wave filters for thermionic valve amplifiers and the like
IPC: H03H7/01
Filed: 1937-09-22
Abstract: 502,615. Impedance networks. PERCIVAL, W. S. Sept. 22, 1937, No 25698. Addition to 475,490. [Class 40 (iii)] A filter comprises a plurality of half-sections of different type which are matched over the pass-band, and terminated at one end by the characteristic impedance and having at the other end an impedance equal to a full shunt reactance, so that the impedance at that end is constant over the pass-band. The invention is approached from a filter (according to the parent Specification) having identical halfsections, Fig. 1a, and terminated by a full shunt reactance C, D. The sections A, B are replaced by a low-pass filter E, Fig. 2, and preferably, the band-pass of the whole network is the upper two-thirds of the range of the low-pass filter E; a slight mis-match between sections E, F is compensated by varying 13, 14 or by raising the impedance of E. In modifications, the half-sections B, C, Fig. 1a, may be replaced by M-derived half-sections from which the series capacities have been eliminated, giving a # arrangement cf inductances 15, 16, 17, Fig. 4; the # arrangement of inductances may be replaced by a T, and the constant-k halfsection A of Fig. 1a by a low-pass filter L, Fig. 5; the constant low-pass filter L of Fig. 5 may be replaced by a mid-shunt termination M, Fig. 6; and the T connected inductances of Fig. 6 may be replaced by a # connection, Fig. 9 (not shown). The capacities of the network are preferably the inter-electrode capacities of associated valves, Fig. 8 (not shown. Transformers may be incorporated in the network to enhance the effect of low interelectrode capacities if desired, Fig. 11 (not shown). The filters according to the invention have the advantage of fewer tuned circuits than the filter of, e.g. Fig. 1a.
Patent GB-704807-A (GB)
Title: Improvements relating to machines for attaching handles to cups
Inventor: JOHNSON JOHN ARTHUR
IPC: B28B11/02
Filed: 1951-11-05
Abstract: 704,807. Attaching handles to cups. STRASSER, H. Oct. 31, 1952 [Nov. 5, 1951], No. 25783/51. Class 87 (1) In a machine for attaching handles to cups, the chuck 11 is provided with resilient or other projections 15 adjacent the points of attachment of the handle 21 to support the cup 20 at those points. The projections may be formed by rubber or metal rings or segments. Specification 593,520 is referred to.
Patent GB-691756-A (GB)
Title: Improvements in and relating to continuous xanthation of alkali cellulose
IPC: D01F2/08
Filed: 1950-10-24
Abstract: <PICT:0691756/IV (a)/1> In a continuous process for xanthating alkali cellulose, an alkali p  cellulose crumb is passed continuously through a vacuum zone in which the crumb is de-aerated and then through a xanthation zone in which the crumb is forwarded and agitated in the presence of carbon bisulphide vapour, vapour seals being provided to prevent transfer of gas or vapour into and out of both zones with the crumb.  As shown, alkali cellulose crumb is fed continuously by screw-conveyer 11 into a vacuum chamber 21 wherein air is removed, and then into an inclined rotating drum 29 along which the crumb is tumbled and into which carbon bisulphide is fed from tank 31 at a rate controlled by valve 35.  Pairs of rotating bell valves 14, 15 and 23, 24 constitute vapour-sealing means.  Drum 29, which is heated by fluid jacket 40, is previously evacuated so that liquid carbon bisulphide is immediately vaporized on entry.  The length and speed of the drum and the rate of feed of the crumb and carbon bisulphide are so controlled that when the crumb reaches the drum outlet 66 it is completely xanthated and no excess of carbon bisulphide remains.  The xanthate is withdrawn at 66 and compacted in 67 by piston 68, the hard compacted mass forming a vapour seal for the drum outlet.  The following modifications are mentioned: the countercurrent flow of carbon bisulphide vapour; a more positive control of the rate of flow of the crumb through the drum by the provision of an internal screw-feed device or of helical vanes on the drum wall; automatic means to control valve 35 when the crumb feed is interrupted; and the provision of a scraper blade to prevent adhesion of material to the drum.
Patent GB-171814-A (GB)
Title: Improvements in connection with studs for collars and the like
IPC: A44B3/00
Filed: 1920-09-08
Abstract: 171,814. Palmer, S. Sept. 8, 1920. Studs.-Relates to studs of the kind provided with a hinged clip preventing accidental fall of stud from button-hole. According to the invention, the base a is of rectangular outline and has upturned lugs b in which the clip C is hinged, and a spring g is secured to the base by the stud stem f or a spring tongue is stamped out of the base or the clip, whereby the clip is held in its closed and open position by the spring action at its tail c<1>. The clip C has two limbs, one on each side of the stud stem f.
Patent GB-1428673-A (GB)
Title: Orthodontics
IPC: A61K6/893
Filed: 1972-06-02
Abstract: 1428673 Orthodontic appliances AMALGAMATED DENTAL CO LTD 30 May 1973 [2 June 1972] 25887/72 Heading A5R An attachment for mounting on a tooth comprises a generally annular base 1 having a pair of opposed inwardly directed tongues 2 each provided with a groove 3 for the reception of an arch wire 4, and a pair of lugs 6 extending transversely of the tongues 2 for receiving an elastomeric band or stainless steel ligature 5 for holding the arch wire in the grooves. The base may be provided with a pair of channels for the accommodation of a spring to assist in uprighting the tooth the channels being at right angles to each other.
Patent GB-224526-A (GB)
Title: Protective devices for direct current systems
IPC: H01H83/08
Filed: 1924-10-30
Abstract: 224,526. Metropolitan-Vickers Electrical Co., Ltd., (Assignees of Wensley, R. J.). Nov. 5, 1923, [Convention date]. Protective arrangements; automatic circuitbreakers.-A switch for the protection of directcurrent circuits is responsive to sudden changes in current magnitude in one direction only, e.g. to increase of current but not to decreases In the. arrangement, shown in Fig. 1 for the protection of a railroad system, the circuit-breaker 5 has two windings, one connected across the mains 1, 2. and the other energized by the secondary 13 of a transformer of which the primary 4 is in the load circuit. The first winding cannot itself release' the circuit-breaker but, upon a sudden overload, the second winding is also energized to assist it and the circuit is. broken. A sudden decrease in current causes the windings to oppose each other and the circuit-breaker remains closed. The core 14 of the transformer has a gap 15 to prevent magnetic saturation. Fig. 2 shows a modification in which the circuit-breaker has only one winding energized by a transformer 13a, a polarized core or an electrolytic or thermionic rectifier 34 being provided so that the, circuit-breaker responds to increases of current but not to decreases. Fig. 3 shows the invention applied as a flash suppressor for a direct-current generator. The switch 25 has two windings, one connected across the load circuit 29, and the other through a non- inductive high resistance 32 across the series winding 20 of the field magnet. Owing to the inductance of the series winding 20 a sudden overload causes an increase of current in the lastmentioned winding of the switch, and the two windings act together to close the quick-action switch 25 to short-circuit two slip rings 23 connected to the armature winding 22. An ordinary overload circuit-breaker 31 is also included in the load circuit, but this will ordinarily have a certain time lag, so that the flash suppressor will operate first. Reference has been directed by the Comptroller to Specification 154,075 and 195,340.
Patent GB-644069-A (GB)
Title: A combined push chair and rocking chair with retractable undercarriage
IPC: A47D13/10
Filed: 1947-09-24
Abstract: 644,069. Perambulators. PHARO, F. Sept. 24, 1947, No. 25908. [Class 108(i)] [Also in Group XIV] A combined push-chair and rocking chair has the wheels F mounted on members B serving as a propelling handle and pivotally mounted at C so that rotation of the members B will bring the wheels clear of the ground to enable the pushchair to be used as a rocking chair.
Patent GB-219842-A (GB)
Title: Improvements in and relating to a combined broom, mop and drying cloth or polishing device
IPC: A47L13/12
Filed: 1923-10-18
Abstract: 219,842. Jones, F. B. Oct. 18, 1923. Pads; mops. - A cover adapted to be placed over the head of a broom is provided with a mop surface d and a polishing surface e and is retained on the brcom bv an elastic band c and press-buttons i. The cover mav also be used on the hand as a cleaning glove, being held on the wrist by the press-button fastenings i.
Patent GB-485519-A (GB)
Title: Improvements in and relating to outlet valves for sinks and the like
IPC: E03C1/23
Filed: 1937-09-25
Abstract: 485,519. Valves. KRISTENSEN,P.M. Sept. 25, 1937, No. 26059. [Class 135] An outlet valve for sinks and the like comprises a rotary perforated disc 6 which is arranged below and co -operates with a fixed perforated disc 5 over the outlet pipe 2. The disc 6 is rotatable on a depending post 7 from the fixed disc 5 and is held against the latter by a spring 10. The valve is actuated by a sliding knob 18 in the wall of the sink through a flexible rod 13 and a connection 12 to a pin 11 on the valve disc.
Patent GB-748042-A (GB)
Title: Nozzle for producing spray and mist
Inventor: FULLER ERIC ROBERT ALFRED
IPC: B05B1/30
Filed: 1953-09-22
Abstract: 748,042. Spray-producers. GENERAL FIRE APPLIANCE CO., Ltd., and FULLER, E. R. A. Sept. 13, 1954 [Sept. 22, 1953], No. 26071/53. Class 69 (3). Liquid flows through an inner tubular member 1 and passages 3 to a chamber 12 between the member 1 and an outer tubular part 9. An extension 4 of the member 1 has a head 5 with a flat annular surface 7 which co-operates with the inner surface of a flange 11 and the liquid flows as a convergent annular stream between the annular surface and flange, and is emitted from an outlet 15. The outer part is adjustably screwed to the inner member, and a valve 10 controls the liquid supply.
Patent GB-897271-A (GB)
Title: Process and apparatus for flash concentration of polyolefin solutions
IPC: C08C2/06
Filed: 1960-07-27
Abstract: <PICT:0897271/III/1> A solution of a solid polyolefin in a hydro carbon solvent is concentrated by heating the solution in preheater 12 and then spraying it through nozzles 14 into flash-chamber 16, the hot solution being sprayed downwards towards the surface of a pool of concentrated polymer solution 18 in the lower part of the flash-chamber.  Solvent vapours are withdrawn from the top of the chamber and are condensed in condenser 32; and concentrated solution is withdrawn from the flash-chamber through conduit 22 by means of pump 23.  A major part of this concentrated solution is recycled via conduit 26 to feed-conduit 13, where it mixes with fresh preheated dilute solution on its way to the flash-chamber. The remainder of the concentrated solution is withdrawn from the system via line 24, and may be subjected to steam-stripping.  The withdrawal of solvent vapours from the flash-chamber is regulated by valve 28 which is actuated by pressure-controller 27.  Gaseous unreacted monomer is separated from the condensed solvent in a separator.  The process may be employed for separating polyethylene, polypropylene or polybutadiene from solvents such as butane, pentane, iso-octane, cyclohexane, and methylcyclohexane.
Patent GB-463306-A (GB)
Title: Improvements relating to the production of motor fuels
IPC: C10L1/00
Filed: 1935-09-21
Abstract: Motor spirit is prepared by mixing with petrol two liquids A and B prepared as follows: There are mixed p-dichlorbenzene, ether, acetone, the distillate from "grass oil" (see below) benzine, and zinc sulphate solution, and the oily layer is removed.  To the remaining aqueous liquid are added the liquid drained from decomposing citrous fruit peels, acetone, "grass oil," petrol and ether, and the oily layer O, is separated.  To the aqueous layer is added o-phosphoric acid solution, p-dichlorbenzene, acetone, ether, dichlorethylene, fusel oil and benzine, and the mixture is distilled. To the distillate is added dichlorethylene, fusel oil, acetone, ether, sodium carbonate, and ammonia solution, and this mixture is distilled, the distillate being rejected, and there being added to the residue benzine and petrol.  The distillate from this liquid is mixed with the oil O (see above) to constitute liquid A.  Grass with or without waste vegetable matter is boiled with water, the liquid cooled, ether and dichlorethylene added, and the mixture allowed to decompose. This liquid, filtered over lime, constitutes "grass oil." To the "grass oil" is added dichlorethylene, acetone, and methylated spirit, the liquid filtered over lime and more methylated spirit added.  The mixture is distilled; to the distillate is added acetone, fusel oil, ether and dichlorethylene, and methylated spirit.  This mixture is distilled and to the distillate are added benzine, acetone, and fusel oil, constituting liquid B.  To the motor fuel consisting of petrol, liquid A and liquid B, there may be added a liquid C prepared as follows: Turpentine is heated with wood ash or charcoal, and on cooling sulphuric acid is added followed by a liquid prepared by heating with hydrochloric acid the liquid drained from decomposing citrous fruit peels, and water.  The oily layer is removed, mixed with methylated spirit, dichlorethylene, fusel oil and acetone, and distilled to give liquid C.  In addition to liquid C, benzine and petrol may be added to the motor spirit.
Patent GB-1260981-A (GB)
Title: Thiazine derivative
IPC: A01N43/86
Filed: 1970-06-01
Abstract: 1,260,981. Herbicides containing 2-dichlorophenyl-1, 3-thiazin-4-one. PHILIPS GLOEILAMPENFABRIEKEN N.V. 1 June, 1970 [4 June, 1969], No. 26224/70. Heading A5E. [Also in Division C2] Herbicidal compositions comprise, in combination with a carrier, 2 - (2',6' - dichlorophenyl) - 1,3 - thiazin - 4 - one. The compositions may contain other herbicides, for example Herbicidal compounds having growthpromoting effects e.g. 2,4 - dichlorophenoxy - acetic acid, 2,4,5 - trichlorophenoxy - acetic acid, 2 - methyl - 4 - chlorophenoxy - acetic acid and α - (2 - methyl - 4 - chlorophenoxy)- propionic acid, Quaternary herbicides, e.g. 1,1' - ethylene - 2,2' - dipyridyliumdibromide and 1,1' - dimethyl - '4,4' - dipyridylium - dibromide, Triazines, e.g. 2 - chloro - 4,6 - bisethylamino - s - triazine, 2 - chloro - 4 - ethylamino - 6 - isopropylamino - s - triazine and 2 - chloro - 4,6 - bisisopropylamino - s - triazine, Urea derivatives, e.g. 1 - phenyl - 3,3 - dimethylurea, 1 - (4' - chlorophenyl) - 3,3 - dimethylurea, 1 - (4' - chlorophenyl) - 3 - methoxy - 3 - methylurea, 1 -(4' - chlorophenyl) - 3 - [3 - (butyne - 1)] - 3 - methylurea, 1 - (4' - bromophenyl) - 3 - methoxy - 3 - methylurea, 1 - (3',4'-dichlorophenyl) - 3,3 - dimethylurea, 1 - (3',4' - dichlorophenyl) - 3 - methoxy - 3 - methylurea, 1 - (3',4' - dichlorophenyl) - 3 - butyl - 3 - methylurea, 1 - (3' - chloro - 4' - bromophenyl) - 3 - methoxy - 3 - methylurea and 1 - (3' - trifluoromethylphenyl) - 3,3 - dimethylurea, Phenols, e.g. 2,6 - dichloro - 4 - cyanophenol, 2,6 - dibromo- 4 - cyanophenol, 2,6 - diiodo - 4 - cyanophenol, 4,6 - dinitro - orthocresol, 2 - sec. butyl - 4,6 - dinitrophenol and pentachlorophenol, Chlorinated fatty. acids, e.g. monochloroacetic acid, trichloroacetic acid, α, α - dichloropropionic acid and α, α, α - trichloropropionic acid, and Mixedtype compounds, e.g. 3 - amino - 1,2,4 - triazole, 3,6- endoxo - hexahydrophthalic acid, maleic acid hydrazide, 2,3,6 - trichlorobenzoic acid, 2 - methoxy - 3,6 - dichlorobenzoic acid, 1 - (3',4' - dichlorophenyl) - 3 - methyl - 2 -  pyrrolidinone, 1 - (3' - chloro - 4' - methylphenyl) - 3 - methyl - 2 - pyrrolidinone, N,N - dimethyl - 2,2 - diphenylacetamide, 2,3,5 - trichloropyridone - 4,4 - amino - 3,5,6 - trichloro - α - picolinic acid, 5 - amino - 4 - chloro - 2 - phenyl - 3 (2H) - pyridazinone, 3 - cyclohexyl - 5,6 - trimethylene - uracil, 2,6 - dinitro - N,N.dipropyl - α, α, α-trifluoro - p - toluidine, 2,6 - dinitro - 4 - methylsulphonyl - N,N - dipropylaniline, 5 - bromo - 6 -methyl - 3 - (1 - methylpropyl) uracil, 3 - amino - 2,5 - dichlorobenzoic acid, 2,3,6 - trichlorophenylacetic acid, 2,6 - dichloro - 3 - methoxybenzoic acid, N - (3 - chlorophenyl) - isopropylcarbamate and 2, 6 - dichlorobenzonitrile.
Patent GB-217494-A (GB)
Title: Improvements in or relating to windscreens
IPC: B60J10/02
Filed: 1923-10-22
Abstract: 217,494. Brockhouse, J. T. Oct. 22, 1923. Windscreens. -The transparent panel 1 of a wind-screen is secured in a frame 3 surrounding all but one side of the panel by means of a block 6 which extends downwardly along the side of the frame and is mechanicallv secured thereto and is formed with an integral inward projection 8 engaging the free edge of the panel 1. In the construction shown the frame is of H-section with the main portion of the block 6 located in the outer channel, while the web 4 is cut away at its upper end 7 below the edges of the flanges 5 so as to accommodate the projection 8. A screw 9 engaging holes in the block 6 and web 4 4 secures the block to the frame, while a further screw 11 passing through the wind-screen standard 10, block 6 and web 4 connects the entire wind-screen to the standard 10.
Patent GB-779726-A (GB)
Title: Reciprocating internal-combustion engine power unit
IPC: F02B3/06
Filed: 1955-09-14
Abstract: 779,726. Two-stroke engines; driving-gear; lubricating. MESSERSCHMITT AKT.-GES. Sept. 14, 1955 [Sept. 27, 1954; Dec. 23, 1954; Jan. 7, 1955; Aug. 29, 1955], No. 26291/55. Class 7 (2). Two-stroke cylinders, e.g. five in number, encircling a main shaft 17, Fig. 8, have each two opposed double-acting pistons 9, 10 acting on fixed or, as shown, loose swash-plates 15, 16 via ball-seated members 11, 12. The pistons 9, 10 define loop-scavenged combustion spaces 6, 8 and a uniflow-scavenged combustion space 7, the swash-plates 15, 16 being maintained non-rotative, by gears 57, 58 incorporating thrust facings 60. In another form of ball-seated connection, Fig. 7, members 49 having plain or roller bearing on the ball head 39 co-act with piston parts 53 via cone-ended elements 51 rolling with line contact on coned ends of the members 49, 53. Locating cages 55 or balls 56 are employed. A single ball co-acting with plane faces or seatings on the members 53, 49 may replace each element 51, the balls being located on the members 49 by cages thereon. In a further form of ball-seated connection, Fig. 4, members 18, 19 connected to piston parts (not shown) have ends 20 working between a swashplate ball-end 22 and a split retaining ring 25, 26. Oiling ducts 33, and further ducts 35, are fed from a channel 31 via the ball-end interior 32. The engine may power turbo-compressors, rotary pumps, air-screws marine screws or, via gearing, vehicle wheels ; and may operate on the Otto or Diesel principle.
Patent GB-785148-A (GB)
Title: Method for the preparation of low molecular weight polymers of esters of methacrylic acid
IPC: C08F20/62
Filed: 1955-09-14
Abstract: Esters of methacrylic acid, e.g. the methyl, butyl and 2-ethylhexyl esters are polymerized to form low molecular weight polymers ranging from the dimer to those having a degree of polymerization of up to 50, by heating the monomers under autogenous pressure at temperatures between 225 DEG  and 350 DEG  C. in the absence of polymerization catalysts and inhibitors.  If desired, the starting material may consist of a mixture of the monomer with one or more polymers ranging from the dimer to the pentamer.  The polymerization product is liquid and is fractionally distilled under reduced pressure to separate the various low polymers.ALSO:Low molecular weight polymers of methacrylic acid esters, e.g the dimers, trimers, tetramers and pentamers, are made by heating the monomer under autogenous pressure at temperatures between 225 DEG  and 350 DEG  C. in the absence of polymerization catalysts and inhibitors.  The various low polymers are separated from the reaction mixture by fractional distillation under reduced pressure.  The prepartion of low molecular weight polymers of methyl, butyl and 2-ethylhexyl methacrylates is described, the individual polymers being separated and characterized by means of their boiling point, density, refractive index and saponification value.
Patent GB-821426-A (GB)
Title: Method and apparatus for the homogeneous compression of strips of extruded material
IPC: B28B3/22
Filed: 1955-09-14
Abstract: 821,426. Extruding clay &c. POHL, F. Sept. 14, 1955, No. 26364/55. Class 87(2). Clay from a vacuum extrusion press 1 is fed through a nozzle 3 to a chamber 4 where it is divided up and forced out through a tapered nozzle 13 to form a homogenized strip by rotating, adjustable blades 10. In a modification, Fig. 2, the blades 10 may be helical and the outlet nozzle 13 may be transverse to the inlet from the press 1. In a further modification, Fig. 4 (not shown), the output may be taken from any of four nozzles having different crosssections those not in use being closed by radially movable slides.
Patent GB-242267-A (GB)
Title: A process for protecting walls of safes or of strong rooms against blow-pipes
IPC: C04B35/48
Filed: 1925-10-21
Abstract: 242,267. Soc. Bournisien, Beau, et Cie. Oct. 29, 1924, [Convention date]. Refractory substances containing zirconium compounds.-Zirconium ores such as zircon are embodied in the walls of safes, &c., to resist attack by the oxy-acetylene blow-pipe. They may be used either in the natural state or agglomerated by a binder such as magnesium cement.
Patent GB-900973-A (GB)
Title: Polymerisation process
Inventor: MARK HERMAN FRANCIS
IPC: C08F20/42
Filed: 1957-08-21
Abstract: Crystalline polymers of molecular weight exceeding 20,000 and melting point above 120 DEG C. are prepared by initiating polymerization of acrylic, methacrylic or chloracrylic acid or an ester, amide or nitrile thereof in solution by ion-pair catalysis while rigidly excluding oxygen and moisture, the temperature being kept below 40 DEG C., and separating any amorphous material from the resulting polymer.  Specified catalysts are lithium, sodium and barium metals; triphenylmethyl lithium or sodium; benzophenonyl lithium or sodium; fluorenyl lithium; phenyl magnesium bromide etherates and tetramethyl ammonium fluorenyl. Specified solvents are toluene, xylene, tetrahydrofuran, dioxane, methyl acetate, ethyl carbonate and liquid ammonia. Specified monomers are methyl, ethyl, propyl, isopropyl and butyl methacrylates; propyl, butyl and cyclohexyl acrylates; methyl, ethyl, propyl and butyl chloracrylates; and methacrylonitrile. Amorphous polymer may be extracted by digesting the product with a solvent, e.g. methyl hexyl ketone, dipropyl ketone or dibutyl phthalate.  Specification 736,461 is referred to.