baber/WOPTO huggingface dataset:
Patent GB-289571-A (GB)
Title: Process for obtaining derivatives of diaryl ketones
IPC: C07C209/68
Filed: 1927-02-05
Abstract: 289,571. British Dyestuffs Corporation, Ltd., Cliffe, W. H., Linch, F. W., and Rodd, E. H. Feb. 5, 1927. Diarylketone derivatives, carbinols, and ethylene derivatives there from. - Condensation products are produced by treating alkali metal derivatives of 4: 4<1>-tetralkyldiaminodiarylketones (see Specification 272,321) with aromatic compounds containing at least one methyl or methylene group, which may be present in a side chain or in a ring. On treating the resulting products with water, carbinols are obtained which yield ethylenic compounds by removal of water. According to examples, (1) Michler's ketone is heated in a closed vessel with dry toluene and sodium. Unchanged sodium and toluene are removed and tetramethyldiaminodipheuylbenzylcarbinol is obtained on decomposing the resulting sodium derivative with water filtering and extracting impurities with ether. The tetramethyldiaminodiphenylbenzylcarbinol gives tetramethyldiaminodiphenylstyrene by boiling with hydrochloric acid to remove water. (2) Octamethyltetraminotetraphenylethanol is obtained by treating Michler's ketone and sodium with tetramethyldiaminodiphenylmethane in benzene solution. Similar products result when tetraethyldiaminobenzophenone is substituted for the Michler's ketone and also when tetraethyl diaminodiphenylmethane is used in place of tetramethyldiaminodiphenylmethane. Octamethyltetraminotetraphenylethylene and analogous ethylenic compounds are obtained from the carbinols by removal of water by heating their sulphuric acid solutions. (3) Tetramethyldiaminodiphenylacenaphthylcarbinol is produced from Michler's ketone, sodium and acemaphthene in benzene solution. 4 : 4<1>-Tetramethyldiaminodiphenylmethyleneacenaphthene is obtained as hydrochloride by boiling the carbinol with hydrochloric acid. (4) Michler's ketone, sodium and fluorene are heated in benzene solution whereby 4 : 4<1> - tetramethyldiaminodiphenylmethylenefluorene is obtained, the carbinol being immediately dehydrated as it is formed. Condensation products from Michler's ketone and p-xylene and from tetraethyldiaminobenzophenone and toluene are also mentioned.
Patent GB-158568-A (GB)
Title: Improvements in and relating to heating stoves
IPC: F24B5/02
Filed: 1921-01-27
Abstract: 158,568. Surdiacourt, P. Jan. 28, 1920, [Convention date]. Closed solid-fuel stoves; heat-radiators.-In a stove of the continuously burning type the products of combustion from the fuel holder 2 pass by outlets 5 to an upper longitudinal collecting chamber 6. This communicates by a series of vertical pipes 7, forming a heat radiator, with a lower longitudinal chamber 8 from which the gases escape to the chimney by a valved outlet 9. In the rear wall of the furnace are two small openings 11 in valved communication with the lower chamber 8 for use when slow combustion is desired.
Patent GB-880787-A (GB)
Title: Improvements in or relating to box-like containers for sundry articles
Inventor: VINEY HARRY STANLEY
IPC: D06F95/00
Filed: 1959-01-30
Abstract: 880,787. Boxes. MODERN INDUSTRIES (LONDON) Ltd. Jan. 29, 1960 [Jan. 30, 1959], No. 3371/59. Class 18. A box has a flexible outer sleeve 6 stretched thereon and a flexible bag 4 hanging freely therein. The sleeve and the lining may be folded over the top of an upper rail 3 and be secured thereto by staples, the staples being hidden by a cover strip 9. In an alternative arrangement the sleeve 6 is secured to the outer face, and the lining bag 4 is secured to the inner face, of the rail 3, the cover strip 9 being of inverted U-shape to extend down over said side faces. The box has a lid (not shown) serving as a seat, and this lid may be hinged to the top rail 3.
Patent GB-943500-A (GB)
Title: Improvements in dielectric heating apparatus
Inventor: WATSON ALEXANDER
IPC: H05B6/80
Filed: 1961-01-30
Abstract: <PICT:0943500/C1/1> Dielectric heating apparatus comprises a waveguide horn 15 to be located closely adjacent the structure 18 to be heated, wherein provision is made for passing a forced air current through the waveguide and cut through the gap between the mouth of the horn and the structure 18, to carry away water vapour as this is liberated. As shown, the apparatus is used for drying a porous wall 18 and thus for destroying living organisms, e.g. dry rot, or other fungus and insect pests, but it may also be used to speed up the curing of concrete. Compressed air is fed into the waveguide 14 through a non-radiating slot 16.  This air may be cold to protect the surface of wall 18 or warmed prior to use, e.g. by using it to cool magnetron 11.
Patent GB-607452-A (GB)
Title: Improvements in or relating to the securing of the needle hole plate of a sewing machine
IPC: D05B81/00
Filed: 1946-02-05
Abstract: 607,452. Sewing-machines. MEFINA SOC. ANON. Feb. 5, 1946, No. 3571. Convention date, Aug. 8, 1945. [Class 112] The throat plate 5 is secured to a sewing machine by one or more spring rings 4 each carried by a screw 1 secured to the machine frame, and each ring co-operating with an annular ridge a in a hole 11 of the throat plate to press the plate into engagement with the faceplate 2. To assist in removal a slot is provided in the throat plate. In modifications the ring is mounted on the throat plate in a groove in the hole and co-operates with a groove or shoulder on the screw.
Patent GB-698901-A (GB)
Title: Improvements in and relating to circuits deriving unidirectional current from an a.c. source
IPC: B60L9/12
Filed: 1951-02-14
Abstract: 698,901. Transformers; transformer arrangements. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 14, 1951 [Feb. 14, 1950], No. 3579/51. Classes 38 (ii) and 38 (iv). [Also in Group XXXVII] A circuit arrangement for deriving variable D.C. from an A.C. source, e.g. for supplying electric locomotive traction motors, comprises two rectifiers 28, 29, each connected in series with a load across terminals 36, 37 between one end of a respective one of two secondary windings 22, 23 of a mains transformer 16 and the mid-point 40 of a secondary winding of an auxiliary transformer 32 whose primary winding is connected via a reversing switch 35 to a tapped third secondary winding 33 of the main transformer, and the ends of the auxiliary transformer secondary winding. are connected to respective other ends of the windings 22, 23 whereby, depending upon the positions of the switch 35 and a tapping selector 34, the voltage supplied by the latter windings to the rectifiers may be boosted or bucked to a variable extent by the winding 33. Application of supply to the rectifiers is controlled by contactors 24, 25, whilst additional contactors 46, 47 connected to low-voltage tappings on the auxiliary transformer secondary winding provide, during vehicle braking, excitation across. terminals 36, 37 for the motor field windings, the armatures then being connected across braking resistors. In modifications, the auxiliary transformer may be an auto-transformer or doublewound ; the rectifiers may additionally be gridcontrolled ; the rectifiers and tapping selector 34 may be of any type; the lead may comprise one or more motors of any equipment; additional main transformer secondary windings may supply vehicle auxiliaries and services; the primary winding 17 of the main transformer may have supply voltage regulation tappings.
Patent GB-242217-A (GB)
Title: Improved means for balancing telephone cable circuits
IPC: H04B3/34
Filed: 1925-02-09
Abstract: 242,217. Voogt, A. H. de. Oct. 29, 1924, [Convention date]. Drawings to Specification. Addition to 225,229. Induction, preventing and minimizing.-In the method of joining up a cable determined by direct measurements of the cross-talk or. overhearing between the circuits, as described in the parent Specification, it is found that the cross-talk values are repeated in groups, so that by choosing a definite order of the connections at the joints, the number of measurements necessary is considerably reduced. For example, in joining up three sections of a quad, there are 64 possible connections, but only 16 distinct sets of cross-talk values. Further, measurements are made with the disturbing source and the disturbed receiver at opposite ends of the portion of cable under test in order to equalize the phase displacements of the component induced E.M.F.'s which depend on the length of path traversed, thereby making the measurements substantially independent of the frequency. The method may be employed in a simplified form to reduce disturbances from external circuits.
Patent GB-164423-A (GB)
Title: Improvements in oil lamps
IPC: F23D3/00
Filed: 1920-02-06
Abstract: 164,423. Courteen, H., and Burgess, E. J. Feb. 6, 1920. Candles, lamps in form of; hand lamps without lanterns.-A wick lamp casing or reservoir a made to resemble a candle and open at or near its lower end is inserted in the truncated conical socket b of a holder and is supported therein by an integral dishshaped plate c. The lamp reservoir is filled with wick or absorbent material, such as cotton wool, asbestos fibre, &c., which absorbs oil placed in the socket b. The supporting edge of the dished plate c may be shaped so as to allow the passage of oil to the socket. The lower edge of the lamp reservoir may be conical to fit or engage with the socket and a bayonet-slot or similar connection may be provided between the reservoir and socket. The cap carrying the wick tube d at the upper end of the reservoir may be a loose fit, or be screwed in position, and may be shaped to correspond to the upper end of the candle. The wick tube d is provided with a spiral ledge or thread e engaging the spiral lower edge f<1> of a boss carrying a conical shade or reflector g on arms f<2>. Alternatively the boss f may be threaded on the wick tube d. The shade may be cut away to form a light aperture g<1>. By rotating the shade on the wick tube, the flame is varied, a stop being in some cases provided to limit the upward movement of the boss. An annular space may be left between the upper part of the boss f and the wick tube d. The wick tube may be formed with holes or slots to allow adjustment of the wick, or other wick-adjusting means may be provided. Absorbent material may be placed in the annular space b between the lamp reservoir and the socket, in which case the socket is provided with an internal perforated tube through which the reservoir passes. A cover plate may be secured above the plate c. The Provisional Specification states that the lamp casing may be fitted to the lamp socket by means of a spring device.
Patent GB-871805-A (GB)
Title: Manufacture of monoalkyl-malonic acid chlorides and process therefor
Filed: 1958-02-05
Abstract: Monoalkyl-malonic acid chlorides are prepared by reacting an alkyl ketone with phosgene in an inert solvent at a temperature of -80 DEG C. to +80 DEG C. under a pressure of 30-760 mm. Hg.  The solvent may be, e.g. methyl propionate or the alkyl-malonic acid formed in the reaction.  The solution may contain 0.1-5% of zinc chloride, concentrated sulphuric acid, mercuric chloride, p-toluene sulphonic acid, ferric chloride or boron trifluoride etherate.  Examples prepare methyl-, ethyl- and isopropyl-malonyl chlorides.
Patent GB-508596-A (GB)
Title: Improvements relating to stair carpet holders
IPC: A47G27/06
Filed: 1938-02-08
Abstract: 508,596. Stair- - carpet, fasteners. CLAY, A., and WICKER, J. C. Feb. 8, 1938, Nos. 3867 and 15413. [Class 52 (v)] A stair-carpet fastener consists of a bracket with an attachment portion 1 and an overlying portion 2 with inturned flanges 3 on its upper face to slidably receive the edges 8 of a carpetretaining arm 6 which may have an operating knob 9. The arm may be tapered so that it is wedged in the bracket. In a modification, the edges of the bracket-engaging part of the arm may be folded under to provide thickened edges.
Patent GB-899083-A (GB)
Title: Method of producing wavy synthetic yarn for use in the lace industry
Inventor: VANDEVOORDE JEAN
IPC: D02G1/20
Filed: 1959-02-04
Abstract: 899,083. Spinning and finishing yarns. ETABLISSEMENTS FRANCOIS MASUREL FRERES. Feb. 4, 1959, No. 3884/59. Class 120(3) [Also in Group VIII] Yarn of continuous synthetic, e.g. nylon, filaments which has been crimped, e.g. by compression and setting, is prepared for lacemaking by twisting, to a predetermined extent inversely related to the yarn count and the number of filaments thereof, followed by sizing, e.g. with polyacrylic acid, to protect the thread from graphite (normally present in the lacemaking machine as a lubricant) and to increase the flexibility of the yarn. The yarn may be single-length "voiline" with twist ranging from 300-550 turns per metre as the count varies from 150-40 and the number of filaments from 46-13; "semi-corded" having a primary twist of 575-900 turns per metre, doubled one or more times and back-twisted 40-800 turns per metre as the count varies from 300-140 and the number of filaments from 46-23; "oval", i.e. doubled one or more times and twisted 120-250 turns per metre as the count varies from 160-70 and the number of filaments from 46-34. The twist may be set by steam.
Patent GB-794458-A (GB)
Title: Improvements in or relating to a pellet cooler and drier
IPC: F26B17/12
Filed: 1956-02-09
Abstract: 794,458. Drying towers. SPROUT, WALDRON & CO., Inc. Feb. 9, 1956 [Feb. 9, 1955], No. 4067/56. Class 34(2) Pellets of animal feed are dried in a tower 10 by air currents which enter through louvres 51 in two side walls and leave via two foraminated baffles 16, 17, exhaust opening 18, duct 19 and blower 20. The baffles divide the tower into two spaces 15 and pellets falling from the tower head inlet 11 are prevented from entering the air space between the baffles by a hood 12. A pan 32 surrounds the tower discharge outlet 33 and with two associated inclined shoots 25, Fig. 1, is mounted for vibrational movement imparted by a motor-driven eccentric drive arrangement 35, 37, Fig. 2. Pellet movement from the upper surface of each shoot 25 to the pan 32 is governed by an arcuate pivoted valve 30 the movement of which into an "open" position is effected by a link 48 governed through bell-crank lever 43 and linkage 45, 46, by movement of a counter-weighted baffle 40 which normally protrudes into the tower at an angle but becomes depressed to the vertical position when pellets fill the tower. The opening in the side wall formed by each louvre 51 is closed when the pellets are absent from the immediate vicinity thereof by a pivoted perforated bent plate 55. As shown, Fig. 4, this plate, which is loosely pivoted about a fixed rod 57 and has its perforations on portion 60 closed by a rubber sheet 65, which also seals the opening formed by the louvre, is in its "closed" position until sufficient pellets have piled up adjacent its protruding portion to cause depression thereof, whereupon air may pass through the louvre opening and the plate perforations 58. Accordingly, all air drawn through the tower must pass through a mass of pellets. Hand-operated control of valves 30 may also be provided.
Patent GB-539424-A (GB)
Title: Method and apparatus for electrically pickling stainless steels
IPC: C25F1/06
Filed: 1940-03-05
Abstract: 539,424. Electrolytically pickling stainless steel strip. DEHN, F. B. (Sharon Steel Corporation). March 5, 1940, No. 4120. [Class 41] Stainless steel strip 12, is electrolytically pickled by passage through an electrolyte, e.g. 2 to 20 per cent. nitric acid and/or sulphuric acid, or caustic soda in proximity to electrodes P, M supplied as from a direct current generator so that some of the current flows from the electrode P, through electrolyte, through the strip 12 and again through the electrolyte to the other electrode M. The strip 12 may be adjustably tensioned to sag to half the depth of the electrolyte so that the upper and lower surfaces receive similar treatment. The electrodes may be of stainless steel arranged vertically and the anode may be in sections to facilitate replacement. In modifications the strip may be traversed on each side of a pair of electrodes ; or between two or more electrodes ; a separate generator may be used with each pair of multiple electrodes. Plating may also be effected, e.g. copper plating of stainless steel, using copper anodes and a solution of copper sulphate and sulphuric acid.
Patent GB-121679-A (GB)
Title: Improvements in Apparatus for Preparing Bamboo and Kindred Material for Pulp Extraction.
Inventor: JARDINE JAMES LOCKHART
IPC: D21B1/06
Filed: 1918-03-09
Abstract: 121,679. Jardine, J. L., and Nelson, I. T. March 9, 1918. Preliminary treatment of materials. - In apparatus of the type described in Specification 14421/14 for preparing bamboo and kindred material for the production of pulp, the pitch and depth of the grooves of the corrugated rolls used for the crushing or disintegrating operation vary from a maximum at the feed end of the apparatus to a minimum at the delivery end, the dimensions at the feed end being substantially three times those at the delivery end. Ten pairs of rolls may be used, the pitch of the corrugations or grooves may vary between 1.25 inches and 0.375 inches, and the depth of the grooves may be substantially one-quarter their width.
Patent GB-1006720-A (GB)
Title: Improvements relating to an acoustic generator for subjecting a liquid spray to sonic energy
IPC: F23D11/34
Filed: 1963-02-01
Abstract: 1,006,720. Whistles. ASTROSONICS Inc. Feb. 1, 1963 [March 5, 1962], No. 4178/63. Heading G5J. [Also in Divisions B2 and B5]. An acoustic generator of the whistle type having an outlet nozzle 14 and cup-shaped resonator 30, is used for atomizing or solidifying liquid discharged through apertures 18 in the base of a chamber 39. The supporting stem 24 of the resonator is held in the sleeve of a member 23 by a screw 25. The spacing of the resonator from the nozzle 14 is adjusted initially by said screw and then the stem 24 is fixed in its adjusted position by a pin 26.
Patent GB-547344-A (GB)
Title: Improvements in or relating to means for feeding fuel to gas producers
IPC: C10J3/30
Filed: 1942-03-28
Abstract: 547,344. Gas producers. FISHER & LUDLOW, Ltd., and ORWIN, O. J. B. March 28, 1941, No. 4202. [Class 51 (ii)] In a fuel-feed chamber having separately controlled inlet and outlet, the outlet closure member is suspended by linkage from a lever on a shaft which moves to a dead centre when the closure is raised to its operative position in which it is maintained by a weighted lever on the shaft. The closure 34 is carried by links 36, 38 from a lever 40, the link 38 being cranked as shown. The lever is operated by a shaft 42 fitted with a weighted lever 45 ; the link 38 is connected to a link 47 pivoted to a bracket 46 and fitted with an arm 48 forming a stop which engages the link 38 when the closure is lowered. The top of the chamber 11 is closed by a lid 14 carried by a lever 17 having a toggle catch 23, 26.
Patent GB-1141829-A (GB)
Title: A process and apparatus for supporting and conveying a sheet of yielding material on a cushion of gas
IPC: C03B35/24
Filed: 1967-01-27
Abstract: 1,141,829. Handling glass sheets. COMPAGNIE DE SAINT-GOBAIN. 27 Jan., 1967 [27 Jan., 1966; 6 Dec., 1966], No. 4214/67. Heading C1M. In a machine for treating glass sheets in a plastic condition a gas cushion supports the sheet (or continuous ribbon) and the cushion is produced by a blower chest having exhaust passages interspersed between the blowing nozzles, and, in order to minimize local pressure differences, the blower chest is moved (as by oscillation or rotation) relative to the sheet and in a plane parallel thereto. The gas may also cool or heat the sheet or merely support it and a similar chest may be arranged above the sheet which may be stationary or advancing to, from, or through, a machine and is particularly used for accepting very thin sheets from a rolling machine with rollers faced with carbon or graphite.
Patent GB-770036-A (GB)
Title: Method and apparatus for covering a container with filamentary material
Inventor: TREVASKIS HENRY WILLIAM
IPC: B21F17/00
Filed: 1955-02-09
Abstract: 770,036. Winding glass &c. filaments on spherical &c. shells. DUNLOP RUBBER CO., Ltd. Feb. 9, 1955 [Feb. 13, 1954], No. 4288/54. Class 109. A container, preferably comprising two hollow hemispheres 1, 2 furnished with bosses 3 and used to contain compressed air &c., is covered by wrapping there-around a reinforcement of resin-coated glass fibres 35, by an apparatus comprising a driven spindle 4 to which a beam 8 is secured, the beam 8 carrying, in its plane, a semicircular runner 21, slotted at 22. The rotation of the spindle 4, by way of gears 10, 11, 13 rotates a shaft 12 which, through gears 17, 18 rotates a threaded shaft 19 to move a nut 30 thereon. A bevel gear 14 on the shaft 12 drives the gear 15 which, in turn, drives the sprocket 16 to move a sprocket chain which runs over wheels 26, 32, 34, the latter wheel being carried by a spring-urged tensioning arm 33, the wheels being carried by an arm 23 slidable along the runner 21 by linkage 31 attached to the nut 30. A worm (not shown) on the spindle 25 of the wheel 26 meshes with a worm-wheel 27 to rotate the container 1, 2 on the axis of the bosses 3. The glass fibres 35 are tensioned by a device forming the subjectmatter of divided Specification 770,037, [Group IX], and then pass through the device 36 which coats them with liquid resin. A revolution counter 9 is preferably fitted to the apparatus.
Patent GB-259100-A (GB)
Title: Improvements in or relating to machines for finishing or polishing leather
IPC: A43D95/08
Filed: 1926-02-15
Abstract: 259,100. Komm.-Ges. C. Frowein-. Jan. 15, 1926, [Convention date]. Boots and shoes, treating; disc apparatus; wheels.-In a leather polishing machine having polishing, emery, &c. discs 4, 5 on a main shaft 3, an auxiliary shaft 10 carrying a tool 16 is provided, the shaft 10 when not in use being located above the main shaft, and when moved into the operative position also being given an inclination with the tool directed downwardly. The shaft 10 runs in bearings 12, 13 in a yoke 14 secured to a spindle 18, which is supported rotatably and slidably in a bearing 18 connected to the machine frame 2. The spindle 18 has therein a groove 24, which, near its end is of helical form, and the groove is engaged by a spring-pressed pin 21 mounted in the bearing 19. When the spindle 18 is moved forwards into its operative position it is turned, when the helical part of the groove reaches the pin, into the position shown dotted in Fig. 1, the tool being then in front of a dust extracting device 25. Recesses 26, 27 may be formed at the ends of the groove to secure the shaft 10 by a bayonet joint 15, and a hand-wheel 17 on the shaft enables this to be held when exchanging a tool. The groove may be in the bearing 19 instead of in the spindle; the bearing may be split to secure the spindle a guide pin also being provided.
Patent GB-971694-A (GB)
Title: Improvements in or relating to oil burning heaters
Inventor: HAWKINS DAVID LAWRENCE
IPC: F23D3/00
Filed: 1960-02-08
Abstract: 971,694. Controlling liquid fuel burners. L. G. HAWKINS & CO. Ltd. Feb. 6, 1961 [Feb. 8, 1960], No. 4357/60. Heading F4T. A bi-metal strip 40 is disposed on a heat shield 41 surrounding a wick burner 8 so that if the flame blows back the strip is heated and releases a lever 12 holding open a valve 5 supplying the burner with fuel. The bi-metal strip is fixed to the outside of the shield 41 and extends through a slot therein. One end of the strip engages one end of a sliding member 45 the other end of which lies adjacent the lever 12. The lever 12 is retained in adjusted position by ratchet teeth 17a. Means 23, described in Specification 906,190, are provided for releasing the lever from the ratchet teeth when the heater is lifted. The valve is closed by a spring 15.