baber/WOPTO huggingface dataset:
Patent GB-561725-A (GB)
Title: Check valve device
IPC: F16K15/03
Filed: 1943-02-11
Abstract: 561,725. Valves. LANGDON, J. D. Feb. 11, 1943, No. 2288. Convention date, Jan. 28, 1942. [Class 135] A check valve device for closing syphon breaker air vents in the casing of back flow preventers has the valve member provided with an extended portion adapted to be impinged upon by liquid flowing back through the casing. In the form shown in the Figure, a fitting 3 carrying the seat for a hinged non-return valve 5 is inserted in an inlet connection 2. A second valve AC secured to the valve 5 cooperates with a seat S to control air vents V and is provided with an extension in the form of a curved vane AE. In a modification, the extension is formed integrally with the non- return valve and co-operates with the outlet pipe to prevent liquid spitting through the air vents.
Patent GB-1157238-A (GB)
Title: Method in the Compression of Gas of Chlorine in Multi-Stage Compressor Systems
IPC: C01B7/01
Filed: 1968-01-16
Abstract: 1,157,238. Chlorine purification process. ROSENBLADS PATENTER A.B. 16 Jan., 1968 [2 Feb., 1967], No. 2303/68. Heading F4P. Chlorine gas leaving a brine electrolysis cell having a carbon anode through a line 3a, Fig. 1, and prior to its compression at 1a is freed of relatively high boiling point impurities by cooling in direct heat exchange at 2a with an excess of cold liquid chlorine admitted through a line 7; the so-condensed impurities together with unvaporized cold liquid chlorine being withdrawn at 8 whilst purified cell chlorine gas together with vaporized cooling chlorine is passed through a line 4a to compressor 1a. The compressed chlorine gas undergoes a further cooling and purification at 2b and compression at 1b. Each heat exchanger 2a, 2b comprises a vessel 6, Fig. 2, to which cooling chlorine is admitted through inlet 7 to a level S and to which gaseous cell chlorine is admitted through inlet 3a to a chamber 11 having a cylindrical side wall 10 and a perforated top 9 immersed in the cooling chlorine. Purified cell chlorine leaves by the outlet 4a whilst condensed impurities and unvaporized liquid chlorine are withdrawn at 8.
Patent GB-569459-A (GB)
Title: Improvements in and relating to compressors
IPC: F02B33/00
Filed: 1944-02-08
Abstract: 569,459. Air compressors. COMPRESSED AIR STARTERS, Ltd. (Herzmark, N.). Feb. 8, 1944, No. 2327. [A Specification was laid open to inspection under Sect. 91 of the Acts, Aug. 11, 1944.] [Class 8 (i)] In a two-stage high speed air compressor having low and high pressure cylinders 5, 6 vertically in line above and below the crankshaft as in Specifications 517,371 and 539,230, and connected by passage 3, the cylinder dead space is occupied by a non-compressible liquid (oil) which for the L.P. cylinder is supplied by splashers 13 on the L.P. piston, the oil being deposited on the aprons and retainer grooves 7<1>, 7<11> of piston 7 and also in L.P. valve passages 30, 31. The oil removed from basin 14 is replaced from separator 73 by a metering pump 61<11> which supplies oil through conduits 73', 14<1>. The H.P. cylinder ports and valves, Fig. 3, are supplied with oil by the back pressure of separator 73, which static pressure is such that a floating disc valve 46 is maintained against the discharge port 47 during the H.P. piston suction stroke, whilst at the same time the valve chambers and passages 42, 44, 45 become oil filled, the oil particularly in the vicinity of the disc valve 46, serving to absorb and dissipate compression heat. In an alternaform of H.P. valve structure and modified oil supply system, Fig. 9, the valve structure is enclosed by body 84 which is equipped with well 85, and passages 82, 86 through the centre of which passage 86 extends tubing 88, supplying oil at constant pressure to the above cavities. The oil maintains contact with disc valve 46<1>, which oil, together with that in above-mentioned cavities, absorbs compression heat and is circulated through union 87 and conduit 90 to separator 93 and is constantly replaced from separator via conduits 93 and 83.
Patent GB-881451-A (GB)
Title: Improvements in lampshades
IPC: G09F23/00
Filed: 1958-01-23
Abstract: 881,451. Rotating lampshades. LAXTON, A. Oct. 21, 1958 [Jan. 23, 1958], No. 2341/58. Class 75(2) A hot air propelled rotatable lampshade includes pivoted deflectors which are adjustable to change the direction of rotation. The shade consists of a lamp-surrounding part (not shown) of circular or polygonal cross-section surmounted by a rotatably supported apertured horizontal or dished panel forming the top 7 of the shade. In Fig. 1, substantially triangular apertures 8 in the top 7 are surmounted by correspondingly shaped deflectors 12 pivotally mounted on pins 11 each of which passes through a pair of lugs 9, 10 bent up from the top 7 and through a pair of depending end plates 12a (Fig. 3) attached to the deflectors. The upper part 12d of each deflector when viewed in transverse section comprises a W either of the outer links 12f of which may contact the top of the shade according to the direction of rotation required. In Fig. 5, the top 7 has circular apertures 21 and supports an upstanding tabular structure 20 to which is attached an upper non-apertured panel (not shown) identical in size and shape with the top 7. Between this panel and the top 7 extend strips of material 15, 16 to form a box-like enclosure with apertures 17 in its side walls. Deflectors 18, pivoted about vertical axes at 19 to the tube 20, have free ends movable from one side to another of the apertures 17 to change the direction of rotation. In a third form, not illustrated, the top 7 has rectangular apertures and rectangular open-ended box-like deflectors are pivoted therein with one open end of each deflector above and the other below the top of the shade.
Patent GB-1361367-A (GB)
Title: Thermally stable polycarbonate composition
IPC: C08L69/00
Filed: 1973-01-17
Abstract: 1361367 Polycarbonate compositions GENERAL ELECTRIC CO 17 Jan 1973 2348/73 Heading C3R  A polycarbonate composition comprises (a) a major amount of (i) a polycarbonate derived from a chlorine- or bromine-substituted dihydric phenol, (ii) a copolycarbonate derived from a chlorine- or bromine-substituted dihydric phenol and a halogen-free dihydric phenol, (iii) a mixture of (i) and (ii), or (iv) a mixture of (i), (ii) or (iii) with a polycarbonate of a halogen-free dihydric phenol, and (b) a minor amount of an additive comprising (i) barium or cadmium carbonate or a barium, cadmium or cerium salt of an aliphatic acid having 2-18 carbon atoms, and (ii) a phosphonite and/or a phosphinite, the ratio of (i) to (ii) in the additive being from 3 : 1 to 1 : 3. The amount of additive is preferably from 0À05 to 2À0 weight per cent based on the composition. The examples describe polycarbonate compositions containing a mixture of a copolymer derived from 2,2-bis-(4-hydroxyphenyl)propane and 2,2-(3,3<SP>1</SP>,5,5<SP>1</SP>-tetrabromo- 4,4<SP>1</SP>-dihydroxy diphenyl)propane and a homopolymer derived from 2,2-bis-(4-hydroxyphenyl) propane and the following additives: phenyl diphenyl phosphinite and cadmium-2-ethylhexanoate, di-(nonylphenyl) phenyl phosphonite and cadmium 2-ethylhexanoate, diphenyl phenyl phosphonite and barium 2-ethyl hexanoate, and di-isodecyl phenyl phosphonite and cerium 2- ethylhexanoate.
Patent GB-587933-A (GB)
Title: Improvements in or relating to haloformates and methods of producing same
IPC: C07C69/96
Filed: 1944-02-08
Abstract: A polyalkylene glycol is reacted with carbonyl chloride or bromide at below 50 DEG  C. to produce a haloformate. Bis-(chloroformates) of polyalkylene glycols, particularly 1,2-alkylene polyglycols such as diethylene, triethylene, tetraethylene, dipropylene, tripropylene, dibutylene or tributylene glycols are specified.  Other polyglycols of the formula OH-R1-O - - - - ORn-O-Rn+1-OH or HO(RO)nR1OH, where R, R1, &c. are aliphatic hydrocarbon or substituted aliphatic hydrocarbon radicals, and n is an integer, are also included, for example, polyglycols obtained by condensing tri-, tetra- or penta-methylene glycol or the glycol HOC2H4-O-C3H6OH.  The products are solvents, plasticisers for resins, such as phenol condensation resins, cellulose derivatives, butyral, polyvinyl acetate, and polymerized diallyl phthalates, carbonates and oxalates, and intermediates in the synthesis of the corresponding diesters of the hydroxy ether and carbonic acid.  In examples, excess of phosgene is passed into dipropylene, triethylene, diethylene or tetraethylene glycol at temperatures ranging from 8-40 DEG  C. to give the dichloroformates.
Patent GB-620812-A (GB)
Title: Improvements in gas-tight junctions between relatively rotatable tubes
IPC: F16J15/54
Filed: 1947-01-27
Abstract: 620,812. Bearings. GENERAL ELECTRIC CO., Ltd., and WHIBLEY, R. H. Jan. 27, 1947, No. 2462. [Class 12 (i)] [Also in Group XXVIII] In a bearing for concentric tubes the tubes are axially located relative to each other solely by a ring of balls adapted to run between concentrically opposing grooves carried by the tubes in the overlapping portions, the grooves are centred on the common axis of the tubes so as to form a ball-bearing permitting relative rotation but preventing relative axial, displace - ment of the tubes, and at least part of the inner tube is a close and gas-tight fit within the outer tube. Fig. 1 shows two metal tubes 1, 2, the tube 1 being reduced in diameter at its end 8 so as to fit closely in the tube 2 to form a substantially gas-tight joint while allowing relative rotation. Tube 2 has an enlarged end 3 which carries the outer race 4 of a ball bearing having balls 5 and a ball cage 6. The inner race 7 is a tight push fit on the end 8 of tube 1. A flange 9 is provided on the tube 1 to complete the enclosure of the bearing.
Patent GB-1177801-A (GB)
Title: Process for the Industrial production of Spinnable Acrylonitrile-Based Polymers
IPC: C08F20/44
Filed: 1967-01-18
Abstract: 1,177,801. Preparation of acrylonitrile copolymer spinning solutions. SNIA VISCOSA SOC. NAZIONALE INDUSTRIA APPLICAZIONI VISCOSA S.p.A. 18 Jan., 1967 [7 Feb., 1966], No. 2586/67. Heading C3P. A process for the industrial production of <SP>n</SP> spinnable solutions of copolymers of at least 85% by weight acrylonitrile and up to 15% by weight comonomer(s) comprises copolymerizing acrylonitrile and the eomonomer(s) dis. solved in dimethylformamide in the presence of a catalyst in one or more reactors at reduced pressure and at a progressively increased temperature, the reaction mixture being first brought to the boiling point, and then being maintained at the boiling point by controlling the pressure according to a programmed sequence, and by controlling the composition of the reaction mass by the programmed addition of further dimethylformamide and catalyst, thereby effecting polymerization under reflux conditions, and after polymerization the reacted material is transferred from the reactors) to a separate environment, wherein the said reacted material is distilled for virtually complete removal of unreacted monomer and of dimethylformamide which is in excess of that required as solvent for the spinning solution. Suitable comonomers include methyl methacrylate and sodium allylsulphonate. The polymerization is generally carried out to complete conversion of the comonomer(s) and to a preselected partial conversion of the acrylonitrile. Catalysts specified are lauryl peroxide, benzoyl peroxide, allyl peroxide and azo isobutyronitrile. The solutions obtained by the process are used for the production of fibres and yarns. An installation for carrying out the process is described.
Patent GB-100609-A (GB)
Title: An improved Custard Powder, Blanc Mange Powder or the like.
Inventor: MANDER FRANK HARCOURT
IPC: A23L9/10
Filed: 1916-02-22
Abstract: 100,609. Mander, F. H., Sullivan, J., and Clarke, W. Feb. 22, 1916. Food preparations.-A custard or blancmange powder consists of corn-flour, a substantially smaller amount of arrowroot, a binder such as gum arabic, albumen, or gelatine, or a mixture, with or without vanilla or other flavouring and egg or other colouring. Custards &c. made from the powder and milk may be baked.
Patent GB-299239-A (GB)
Title: Improvements in or relating to flat-bed printing machines
IPC: B41F3/80
Filed: 1928-01-27
Abstract: 299,239. Dawson, Payne, & Elliott, Ltd., and Stott, E. Jan. 27, 1928. Cylinder machines.-A stop-cylinder flat-bed machine of the kind in which a cut-away gear 5, Fig. 3, fixed to the cylinder is moved into driving-contact with the bed rack 3 by means of a catch or pawl on a freely mounted gear 6 alongside of gear 5 is constructed with a pawl 8 which has two effective lengths so that the pickup of the drive is adapted to take place silently and at the correct time whether the bed is being driven quickly by power or being inched by hand. While the cylinder is stopped the pawl 8 is held in inoperative position against the pressure of spring 9 by means of a rim 11 on gear 6. The rim 11 is cut away to allow the pawl 8 to engage wheel 5 to move it into driving- connection with the rack, and the pawl 8 is formed with two arcuate faces 14 struck from the same centre with different radii. The shorter of these comes into operation to start the drive when the bed is moved slowly by hand, and the longer one when the bed is moved by power. Instead of stepping the outer end of pawl 8, the abutment it engages may be stepped. Correct register of the cylinder and bed is obtained when the rack 3 engages gear 5, and when these two are geared, the longer abutment of the pawl 8 is made to engage the rim 11.
Patent GB-469541-A (GB)
Title: Improvements in or relating to the manufacture of monocarboxylic acids
IPC: C07C51/38
Filed: 1937-01-29
Abstract: Monocarboxylic acids are made by passing the vapour of a dicarboxylic acid together with steam containing a proportion of ammonia (e.g. 1--2 per cent) through heated tubes or passages.  A temperature range specified is 300--480 DEG  C. and the tubes may be filled with an inert, non-catalytic material in the form of lumps or baffles.  In an example, phthalic anhydride vapour, mixed with steam containing 1 per cent of ammonia, is passed through tubes packed with pieces of plumbago, at a temperature of 450 DEG  C.
Patent GB-1510252-A (GB)
Title: Separable electrical connectors
IPC: H01R13/6581
Filed: 1976-01-23
Abstract: 1510252 Phonoconnector PERFECTION ENTERPRISES Inc 23 Jan 1976 [6 Feb 1975] 02734/76 Heading H2E  A phonoconnector pin plug assembly 10 for coupling with a phonoreceptacle 11 comprises a pin 22, held in a socket shell 25 by an insulating disc 23, the shell 25 having a groove 34 in which a resilient clutch ring 33 (Fig. 5) fits, so that surfaces 39, 40 between shoulders 37, 38 and ends 35 project into groove 21 of receptacle 11 (Fig. 3). Receptacle 11 has a socket sleeve 14 supported inside shell 12 by an insulating sleeve 13 and receives pin 22 of plug 10 when mated (Fig. 3). Pin 22 has means for connecting it to a lead 31 whose armour 32 is connected to the shell 25 and sleeve 14 has means for connecting it to a wire 18. In a modification the ring (33<SP>1</SP>, Fig. 6, not shown) has only one surface (39<SP>1</SP>) for contacting shell 12; shell 12 may be formed as a turned metal member (12<SP>1</SP>, Fig. 7, not shown) with an internal shoulder (20<SP>1</SP>) and an external machined groove (211).
Patent GB-138981-A (GB)
Title: Improvements in furnaces for the heat treatment of metals
IPC: C21D9/00
Filed: 1919-02-04
Abstract: 138,981. Brighten, H. W., and Peakman, P. Feb. 4, 1919. Muffle furnaces; gases, supplying. - In connexion with a muffle a for the heat-treatment of metals, a producer g and a supplementary gener. ator / are provided, supplying gas respectively for the external heating and to the interior of the muffle, the latter supply being subsequently used to assist in the external heating. The generator f, which preferably forms a preliminary distillation chamber for the fuel supplied to the producer, is connected with the muffle through a passage controlled by a valve m and a distributing-pipe b. A blow-off pipe n for use in starting opens from the passage in the generator side of the valve, and an inlet q is provided so that steam or air may be admitted to the muffle. Gas is drawn off from the muffle through the ports e, and is delivered through the passage h to ports i over the producer arch. By suitably varying the composition of the gas supplied to the muffle, the apparatus may be used for case-hardening, malleableizing, annealing, or for giving a protective coating against corrosion. Preheating and cooling chambers may be provided in connexion with the muffle.
Patent GB-1379732-A (GB)
Title: Radar-reflecting construction
IPC: H01Q15/14
Filed: 1971-01-20
Abstract: 1379732 Floating navigational aid R T MOON 10 April 1972 [20 Jan 1971] 2800/71 Heading B7A [Also in Division H4] A floating body, or a fixed structure which may constitute a navigational hazard to boats or ships, is composed of a glass reinforced plastics material which is not intrinsically reflective of radar waves but which is made so for waves of specified search frequencies by incorporating in said material aluminium needles of such lengths that they constitute reflective dipoles. The needles may all be of the same length, for a single search frequency, or be of a mixture of lengths, for several search frequencies. In a boat, it is not necessary to incorporate needles in the material of the hull below the water line.
Patent GB-213377-A (GB)
Title: Improvements in type holding bars for use in embossing machines
IPC: B44B5/02
Filed: 1923-01-31
Abstract: 213,377. Walpole, G. S. Jan. 31, 1923. Embossing; holders for loose type.-Relates to machines for embossing cards &c., more particularly of the kind in which the embossing-type have cutting-edges which cut out and impress coloured paper into the card, and consists in providing a type-holding frame for such machines so shaped and arranged as to permit the type to move relatively thereto on the application of pressure and to limit the depth of impression of the type. The type-holder consists of a rectangular frame 1 provided with side recesses 4, corresponding to the beards 5 of the type 9, and is placed upon the card and coloured paper carried on the platen of the machine so that the embossing faces of the type rest upon the card &c. Clearance is allowed between the horizontal surfaces of the beards 5 and the recesses 4 so that, on the application of pressure, the type are forced into the card until the pressure member engages the upper surface of the frame 1. The depth of impression is determined by the amount of this clearance. The long sides of the frame may be fixed or one may be provided with screw and spring adjustment 6, 7, Figs. 2 and 3, or may be positively adjusted for different sizes of type. Lateral members 10, Fig. 4, adapted to fit recesses on the platen, may be provided on the frame 1 so that the frame can be used as a type or card alignment device as described in Specification 213,376. Specification 205,131 also is referred to.
Patent GB-784839-A (GB)
Title: Improved method of producing pigmented or dyed variegated artificial yarns
IPC: D01D1/06
Filed: 1954-02-01
Abstract: Variegated continuous artificial filament yarns with strong covering power are produced by feeding, in dry, wet or melt spinning, to a single spinneret, two or more spinning solutions or two or more spinning melts at least one of which is differently coloured or pigmented or contains different intermediates (adapted for subsequent development to different dyestuffs) from the other or others and extruding the solutions or melts through the same orifices in the spinneret, the solutions or melts being fed to the spinneret at a rate sufficiently low to prevent turbulence and intimate mixture of the solutions or melts, so as to obtain maximum irregularity in the distribution of the components of the extruded filaments.  The two or more spinning solutions or melts may be, apart from differences in colour, identical or different. In the latter case they are preferably compatible with one another.  In an example, two 25 per cent solutions of cellulose acetate having an acetyl value of 54.5 (as acetic acid) in acetone, one containing one per cent of titanium dioxide and the other 3 per cent of carbon black (in each case based on cellulose acetate) are fed at 60 DEG  C. and at a sufficiently low rate by means of separate synchronized metering pumps and feed pipes to a spinning head provided with a spinneret having 24 orifices each 0.08 mm. diameter.  Specifications 514,638, 579,081 and 580,941, [all in Group IV], are referred to.
Patent GB-1175663-A (GB)
Title: Improvements relating to Handle and Lock Combinations
Inventor: DALEY ERNEST CHARLES
IPC: E05B5/02
Filed: 1966-01-24
Abstract: 1,175,663. Handle and lock assembly. REGENT LOCK CO. Ltd. 24 Jan., 1967 [24 Jan., 1966], No. 3143/66. Heading E2A. A handle 1 includes in its stem 1a a latch bolt 10, which engages in an opening 11a formed in a cylindrical 3 of an escutcheon 2, thus retaining the handle flush within a recess of the escutcheon. Key operation of a barrel lock 7 releases the latch bolt 10 and the handle is moved by spring 13 to a projected position wherein the handle is free of the recess. The handle stem 1a is secured through a rod 12 to a member 14 formed with a lug 18. In the projected position of the handle, this lug 18 fits within a recessed end portion 17 of a sleeve 4. Rotation of the handle thus rotates the sleeve 4, which carries door-bolt operating rods 6. The sleeve 4 is prevented from axial movement on the cylindrical housing 3 by a screw 15 engaging in a part-circumferential slot 16. In a modification, Fig. 8 (not shown), the screw 15 is retained in a small axial extension to slot 16 when the handle is flush within the escutcheon recess, thus positively securing the door bolts.
Patent GB-1521622-A (GB)
Title: Methods and devices for cutting eroding welding and depositing metallic and non-metallic materials by means of an electric arc
IPC: B23K9/073
Filed: 1976-01-27
Abstract: 1521622 Arc welding systems SECHERON SOUDYRE SA 27 Jan 1976 [27 Jan 1975] 03158/76 Heading H2H [Also in Divisions B3 and H3-H5] An arc torch has its arc subjected to a rotating magnetic field whose magnitude and speed of rotation can be controlled to vary the rotational speed and the path taken by the arc. The field is produced by a polyphase, e.g. three-phase electromagnet 10 provided with equispaced pole pieces 17, 18, 19 arranged about the arc 6. Three vertical arms 11, 12, 13 carrying windings 14, 15, 16 are interconnected at their upper ends by an annular flux return member. In the plasma torch shown gas is supplied through a hollow electrode 2 and through an aperture 9 in the torch sleeve 1. The arc 6 is struck between nozzle electrode 4 and hollow electrode 2 and is rotated by the electromagnet 10, the windings 14, 15, 16 of which are supplied from separate phases. The controlled electromagnet polyphase supply 21 comprises a frequency control unit 29, a variable frequency pilot generator 22, a polyphase current generator 23 and three amplifiers 24, 25, 26 supplying current to the windings 14, 15, 16. Amplifiers 24, 25, 26 are controlled by an amplitude adjusting unit 27 servo controlled by a pulse generator 28 itself controlled by pilot generator 22. The amplitude and speed of rotation of the magnetic field can be regulated periodically or aperiodically by varying the supply frequency, the supply voltage and the arrangement of the windings. Thus it is possible to cover an area of a workpiece delimited by the maximum and minimum trajectories of the arc. In Fig. 5 and 6 (not shown), the pole pieces of the electromagnet are arranged downstream of the nozzle of a transferred arc plasma torch and a TIG torch respectively. Likewise in Fig. 7 (not shown) a torch with a consumable wire electrode has its arc controlled by a three-phase magnet whose poles are arranged about the torch axis downstream of the torch body. Cutting, electro-erosion welding and depositing metals and non-metals may be carried out with the torches disclosed.