baber/WOPTO huggingface dataset:
Patent GB-442536-A (GB)
Title: Manufacture of vat-dyestuffs
Filed: 1934-08-09
Abstract: Vat dyes are obtained by causing a benzoquinone to react with a dihydrodianthrone at raised temperature in presence of a diluent. The products dye vegetable fibres blue or green, and may be halogenated to give green dyes.  According to examples: (1) dihydrodianthrone is heated in chlorobenzene with benzoquinone, and with monochlorquinone, the product in the former case being subsequently brominated; (2) 3 : 3<1>-dichlorodihydrodianthrone is heated with benzoquinone, and halogenated with sulphuryl chloride: 3 : 3<1> - dichlordihydrodianthrone is obtained by reducing 2-chloranthraquinone to give 3-chloranthrone, and boiling this with ferric chloride.  Samples have been furnished under Sect. 2 (5) of green dyes obtained from 2 : 2<1> dimethyldihydrodianthrone and 2 : 2<1>-diphenyldihydrodianthrone respectively with benzoquinone; 2 : 2<1>-dimethyldihydrodianthrone is obtained by oxidation of p-methylbenzylbenzoic acid to the benzoyl compound, ring-closure to the 2-methyl-9-anthrone, and oxidation of this product with ferric chloride.  The Specification as open to inspection under Sect. 91 also contains examples of the condensation of 3 : 3<1>-dimethyldihydrodianthrone (obtained by reduction then partial oxidation of 2-methylanthraquinone), 1 : 1<1>-dichloro-dihydrodianthrone (obtained by reduction and partial oxidation of 1-chloroanthraquinone), and 1 : 1<1> : 8 : 8<1> - tetrachlorodihydrodianthrone (obtained by reduction and partial oxidation of 1 : 8-dichloranthraquinone) with benzoquinone, and of the condensation of dihydrodianthrone with p-dichlorobenzoquinone and chloroanil.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1004608-A (GB)
Title: Ceramic materials and methods of making same
IPC: C04B38/02
Filed: 1962-06-15
Abstract: A ceramic material for forming a porous ceramic body or member comprises by weight 44-57% Al2O3, 8-25% SiO2 and 25-39% CaCO3 and/or MgCO3.  Raw materials used for making this mix include various kaolins, china clays, alumina, dolomite, limestone and magnesite, and in some cases a small proportion of talc.  These materials contain minor amounts of compounds which may be expressed as oxides of Na, K, Ti and Fe which appear in the final products.  The ceramic material may be fired at 1600-2000 DEG  F. to produce a preferred machineable ceramic body having a Mohr's hardness of 2.5-3.5 and containing a plurality of interconnected capillary-size open cells throughout. Such a body has a porosity of 50-70% by volume and is composed of 51-66% Al2O3, 11-26% SiO2 and 16-28% of CaO and/or MgO, optionally together with minor amounts of the other oxides mentioned above carried from the starting materials. Either the prefired body or the original material may be fired at 2300-2700 DEG  F. to provide a porous ceramic member having a porosity of 6-60% by volume, and the same composition range as the prefired body.  Such a member also contains interconnected capillary-size open cells, and may have a Mohr's hardness above 5 or even above 9.  Before firing, the porous prefired body may be filled with a synthetic resin which is subsequently burnt out. The passages in the porous ceramic member may be filled with a filler to produce a composite member.  Fillers mentioned include liquids, semi-solids and solids, for example grease, heavy metal soap lubricant, carbon, synthetic resins (e.g. epoxy, polyester, silicone, fluorocarbon and polyurethane resins), metals and alloys (e.g. Al, Si-Al alloys, Pb and Zn).  The passages in the member may also be merely coated, for example with synthetic resin or metals (e.g. Nid, Pd, Pt) or mixtures of resin and metal. Specifications 761,062, 761,556, 785,693, 785,694, 785,696, 785,697 and 786,175 are referred to.
Patent GB-1432881-A (GB)
Title: Method and apparatus for producing a needled fabric structure
IPC: D04H18/00
Filed: 1974-05-23
Abstract: 1432881 Needling loom FIBERWOVEN CORP 23 May 1974 [20 June 1973] 23137/74 Heading D1R A previously needled fibrous web 14 undergoes transverse oscillation whilst being passed through the needling zone, the amplitude of the oscillation decreasing in the forward direction of travel. "Tracking", i.e. marking of the web with longitudinal scars caused by needling is thereby reduced. Preferably a "Fibrewoven" loom is used having 1 or 2 needle zones 28, 30 each zone comprising two pairs of needle boards mounted on rocker arms 32, 34 rocking about axes 36, 38. The needles of each upper board are point on point with and travel in a mirror image path of the corresponding needles of a lower board. Chains of fibre entanglement running longitudinally of the web are thereby produced. The transverse oscillation of the web imparts a sinusoidal displacement of decreasing amplitude to the chains so that they overlap. The web may be oscillated by roller 44 which is mounted for free rotation on shaft 52. One end 60 of the shaft is bifurcated for receiving the end of a crank arm 62, Fig. 4, carried on a crank 64. Collars 54 ensure that roller 44 oscillates with shaft 52. The web is drawn through the needling zone by driven rollers 48, 50. The web forms a festoon 46 between supply roll 10 and oscillating roll 44 to ensure its relaxation prior to needling. A bar or roller 150 may be provided to prevent the festoon flapping back and forth. It may be slightly weighted to adjust the tension in the web. As shown in Fig. 1 a second festoon, oscillating roller, needling zone and drawing rolls may be provided. In an alternative embodiment shaft 52 is stationary and supply roll 10 is oscillated. In the embodiment of Fig. 6 the web is fed from the supply roll 10 over driven roll 11 to J box 13 where it forms random plaits. The plaiting may be enhanced by replacing 11 by an elliptically shaped plaiter roll. The plaiting is said to produce transverse oscillation in the web as it passes over freely rotating roll 15 into the needling zone .Alternatively roll 11 or roll 15 may be reciprocated by the crank mechanism of Fig. 4.
Patent GB-517870-A (GB)
Title: Improvements in airscrews
IPC: B64C11/36
Filed: 1938-08-06
Abstract: 517,870. Variable pitch propellers. SLAUGHTER, J. T. Aug. 6, 1938, Nos. 23277/38, 37120/38, 909/39, 6136/39 and 20127/39. [Class 114] The blades 7 are rotated by a root bevel wheel 10 engaging bevels 11, 13, one or other of which is driven from the engine shaft 14 through the epicyclic gear 24, 25, 26. The selection of the bevel to be driven is obtained by the control shaft 14 which slides axially to increase pitch by the governor 42, and to reduce pitch by the spring 40. The epicyclic train is only brought into operation when the governor collar 19 moves, this moving to lock the pawl ratchet plate 30 through the links 45, 44, 35. The range of pitch movement is limited by stops. The pitch change is initiated by accelerating or decelerating the engine.
Patent GB-842353-A (GB)
Title: Improvements in fuel supply systems for gas turbine engines
Inventor: MCCOURTY WILLIAM DONALD
IPC: F02C7/22
Filed: 1956-07-27
Abstract: 842,353. Gas-turbine plant. HOBSON Ltd., H. M. July 9, 1957 [July 27, 1956], No. 23283/56. Class 110 (3). [Also in Group XXIX] A fuel control system for a gas turbine, of the type comprising an engine-driven centrifugal governor controlling a valve operative upon the fuel flow control unit, includes an auxiliary governor operative upon the main governor to alter its setting at a rate proportional to the error resulting from " off-set," defined as change of selected speed, with a governor rating of substantial magnitude, accompanying changes in fuel demand due, for example, to changes in temperature or other independent variables. The invention is described with reference to a system as disclosed in Specification 825,531, in which the centrifugal governor 21 operates a hinged flap member 31 controlling an orifice 30 at the end of a pipe communicating with the rear of the diaphragm 15 operating the pressure-regulating valve 14 of the fuel flow control unit 9. Due to off-set, member 31 rotates from its normal position, and to eliminate this the fuel from the pipe 29 communicating with the upstream side of unit 9 is provided with further alternative flow paths, the first through an orifice 34 controlled by a needle valve 35 carried by a piston 37 loaded by a spring 38 of low rating, and the second through an orifice 36 in piston 37 and a further orifice 39 controlled by hinged member 31. The provision of spring 38 ensures that since the flow through orifice 36 is constant, the rate of displacement of piston 37 is proportional to the positive error in the setting of member 31. When fuel demand is reduced member 31 is displaced anticlockwise from its normal position, and the reduced flow through orifice 39 results in a reduced pressure drop across piston 37, which accordingly moves needle valve 35 to the left to reduce the flow through orifice 34. The consequent reduced pressure drop across an orifice 28 in pipe 29 produces a momentary decrease of fuel flow to the engine, and the governor speed accordingly falls to enable the governor to return member 31 clockwise to its normal position. Hence, as fuel demand decreases, needle 35 moves progressively to the left to permit the governor to maintain the selected speed. The reverse action occurs at increase in fuel demand. The arrangement shown also includes an acceleration-responsive device 22 associated with the governor and operating as described in Specification 764,071.
Patent GB-317847-A (GB)
Title: Improvements in or relating to automobile upholstery and methods of making the same
IPC: B68G13/02
Filed: 1929-07-29
Abstract: 317,847. Budd Manufacturing Co., E. G., (Assignees of Ledwinka, J.). Aug. 25, 1928, [Convention date]. Cushions; padded upholstery, securing in position.-Padded upholstery is formed from upper and lower layers of fabric 10, 11 interwoven at intervals to form pockets for the reception of the stuffing material 14. The securing devices 16 by which the upholstery is attached to the surface to be' covered are passed through the interwoven web 12. The Specification as open to inspection under Sect. 91 (3) (a) states that the upper fabric may be plush or velvet. This subject-matter does not appear in the Specification as accepted.
Patent GB-216763-A (GB)
Title: Improvements in or relating to table desks
IPC: A47B41/02
Filed: 1923-09-18
Abstract: 216,763. Bennet, J. D. Sept. 18, 1923. Double and multiple hinges.-A desk of the kind in which the lid is hinged by side links 3, one end of a link being pivoted to the frame &c., and the other to the lid, so that the lid may be adjusted to various sloping positions in which it is retained by a rack 6 on the lid engaging a detent 7 on the frame, has slots or sockets co-operating with the rear edge of the lid to retain the lid in the open vertical position 1<c>. The movements of the links are guided and limited by quadrants 10.
Patent GB-974176-A (GB)
Title: Improvements in or relating to capsules for shell-less eggs
Inventor: WREN FREDERICK WILLIAM
IPC: A23B5/00
Filed: 1962-06-18
Abstract: 974,176. Preserving eggs. PAKCEL Ltd. May 30, 1963 [June 18, 1962], No. 23329/62. Heading A2D. [Also in Division B8] Individual shell-less eggs are each placed in a flanged cup 11, shaped to locate the yolk 33, and a closure 16 is heat sealed to the flange. A series of cups may be closed by a sheet and enclosed by a further sheet. The cup and closure flanges may be joined by a heat sealing adhesive selected to give a relatively weak seam to facilitate opening. A suspension tab 29 may also facilitate opening. The closure may be applied in an atmosphere of inert gas and the package may be sterilised by irradiation. A domed configuration 12 locates the yolk. The egg may be cooked in the unopened package. The closure and/or cup may be transparent.
Patent GB-1045698-A (GB)
Title: Catalytic dehydrogenation of hydrocarbons
IPC: C07C5/333
Filed: 1964-06-05
Abstract: A vapour phase dehydrogenation catalyst for C9-C16 paraffins to produce the corresponding olefines comprises copper molybdate on alumina. Temperatures of the process are exemplified as 350 DEG  to 650 DEG  C. for 0.1 to 10 secs. preferably in the presence of an inert gas such as steam or nitrogen.
Patent GB-886459-A (GB)
Title: Improvements in devices for regulating the damping in pneumatic or hydro-pneumatic suspension systems for vehicles
IPC: F16F9/512
Filed: 1960-07-05
Abstract: 886,459. Electrical measuring systems.  TATRA, NARODNI PODNIK. July 5, 1960 [July 10, 1959], No. 23534/60. Drawings to Specification. Class 40 (1). [Also in Group XXXII] A system for regulating the degree of damping in a road vehicle comprises a carbon stack resistor, responsive both to the load and roughness of the road by using a non-return valve and a bleed hole between the suspension system and the resistor pressure chamber, connected to an electromagnetic device which regulates the damping.
Patent GB-1045699-A (GB)
Title: Feed means for strip material
Inventor: GREEN HAROLD WILLIAM
IPC: B21D43/11
Filed: 1964-06-08
Abstract: 1,045,699. Metal sheet feeds. J. P. UDAL Ltd. June 4, 1965 [June 8, 1964], No. 23562/64. Heading B3W. [Also in Division B6] A reciprocating gripper feed mechanism for metal sheets comprises a plate 10 to which are secured a pair of transverse support members 11, which are connected by two pairs of spaced slide bars 12. A slide 15 is mounted on each pair of bars 12 and is reciprocated by a fluid cylinder 16. Each slide carries gripper jaws 19, 20, Fig. 3 (not shown), which are closed to grip the sheet metal by fluid pressure means. The cylinders 16 and the jaw closing means are controlled by valves operated by a part of the press to which the sheet metal is being fed. As the jaws of one gripper close on to the work, that gripper is moved in the feeding direction, the jaws of the other gripper are opened and it is moved in the opposite direction. There are edge guide rollers 13 mounted on each of the support members 11 and there is also a pair of transversely extending rollers 14 which steady the sheet. The length of the feed stroke is adjusted by screw-operated stops 17 at each end of the plate 10.
Patent GB-414523-A (GB)
Title: Improvements in or relating to the manufacture of thermionic valves and the like
IPC: H01J9/395
Filed: 1933-08-24
Abstract: A getter consisting of an alloy of approximately equal amounts of barium and aluminium is prepared by melting one of the constituents and successively adding small amounts of the other, allowing the mixture to cool, finely dividing the mass and pressing the ground material into pellets.  In one method, 50 grains of aluminium are melted in an iron crucible, in an atmosphere of helium or argon.  The aluminium is allowed to freeze and one-third of 50 grains of barium is added.  The mixture is fused, frozen and another third added.  The operation is repeated, and the resulting alloy ground to the desired fineness and compressed into pellets.  According to the Specification as open to inspection under Sect. 91, more than 50 per cent of barium, or, if a wire getter is desired 25 per cent of barium, may be used.  This subject-matter does not appear in the Specification as accepted.
Patent GB-168900-A (GB)
IPC: F01D21/14
Filed: 1921-09-05
Abstract: 168,900. Akt.-Ges. Brown, Boveri, et Cie. Sept. 9, 1920, [Convention date] Regulating. - A device to prevent excessive pressure in the interior of steam or gas turbines and to limit the maximum power-output thereof comprises a pressure - responsive device which is adapted, when a certain pressure in the turbine is reached, to close the turbine inlet valves. The pressure-responsive device consists of a piston b, the upper side of which is subjected to the pressure in the interior of the turbine, and the lower side to a spring c, which is adjustable by a set-screw d so as to regulate the pressure at which the piston is to be lowered. The piston b has a spindle e connected to a slide f, which on its downward movement uncovers the port k, permitting pressure oil from the inlet valve system to escape by the pipe h, and the inlet valve to close.
Patent GB-651517-A (GB)
Title: Improvements in or relating to signalling systems particularly for use on ships
IPC: B63B45/08
Filed: 1947-08-27
Abstract: 651,517. Audible marine signalling-apparatus. CHADBURNS (LIVERPOOL), Ltd., and BAMFORD, D. C. Aug. 27, 1947, No. 23635. [Class 118 (ii)] In a signalling system of the kind adapted to give an automatically repeated audible signal, such as during fog conditions, and to provide facilities for giving special signals by manual controls, the possibility of the automatic signal combining with the special signals to give false indications is avoided by ensuring that operation of any manual control automatically stops the operation of the automatic signal. The automatic signalling system comprises a motor 17, in the timing-gear casing 18, driving a cam 16 which makes contact intermittently between the slipper 15b and the spring contact 15, so arranged as to energize the solenoid 12 and operate valve 11, thereby sounding the whistle or syren 10 mounted, for example, on a ship's mast. The motor is started by pressing button 20 in the fogsignal switch-box 19, which energizes relay 26 from the main supply 26a via contacts 30, 31 in each of three manual controls 22, 23, 24 mounted, for example, on different parts of a. ship's bridge, the contacts 30, 31 being connected by the members 29 when the operating handles 28 are in the positions shown. The relay 26 closes two contacts 27, one of which maintains the relay operated over the above circuit when the push-button 20 is released, and the other connects the supply to the motor and to cam contact 15b. The motor may be deliberately stopped by pushing button 21 which breaks the relay circuit, or automatically stopped by operation of any one of the manual controls 22, 23 or 24 which break the relay circuit at corresponding contacts 30, 31. Special signals are given by moving a handle 28 to the left, thereby bridging contacts 32, 33 which connect the supply directly to the solenoid 12. On returning the handle to the right and bridging contacts 30, 31 the relay 26 is not again energized since its holding circuit is broken at contact 27 and its initiating circuit at button 20 ; operation of the latter is necessary before the fog signal continues. Anti-spark capacitors are fitted to the contacts 32, 33 and 15, 15b, and a quench resistor 61 is fitted in the junction and fuse box 25. Specifications 305,705, [Class 135], and 315,112, [Class 118 (ii)], are referred to in the Provisional Specification.
Patent GB-508631-A (GB)
Title: Improvements in taps and cocks
IPC: F16K31/58
Filed: 1938-08-10
Abstract: 508,631. Taps or cocks. LE ROY, [nÚe DE WINTER], M. J. L. Aug. 10, 1938, No. 23654. Convention date, Aug. 10, 1937. [Class 135] In a tap of the type in which a lift valve 8 is opened in the direction of fluid flow by a comparatively small displacement of the manipulating member 7, the valve is arranged in a substantially cylindrical part 2 of the valve body 1 and is carried by a sleeve 4 sliding on the cylindrical part 2 and forming a delivery passage for the fluid, the sleeve being moved axially by a pin 6 carried thereon and engaging a helical groove 5 in the part 2. As shown in Fig. 1, the cylindrical part 2 has a valve seat 3 at its upper end which may or may not be integral with the tap body. Within the sleeve 4, a tubular guide 11 is supported by cross ribs 12. The valve member comprises a rigid disc 9 with a tail 10 supported in the guide 11 and a packing disc 8 held in position by a snug 22. The pin or snug 6 is formed by the end of the operating handle 7 which is screwed into the sleeve 4 so that it is possible to release the sleeve 4 by unscrewing the handle 7. Liquid seeping between the sliding surfaces of the cylinder 2 and sleeve 4 enters chambers 18 formed in one or both these members from which it is sucked by passages 21 opening into the flared lower end of the cylinder 2. A uniform flow is ensured by the extended edge of the disc 9, by a metallic gauze 17 and by a jet-breaking device 15. The latter comprises a number of partitions which form a downwardly directed cone situated below the conical part 13 of the sleeve. The valve disc 8 may' be supported in a cup on the disc 9.
Patent GB-225643-A (GB)
Title: Improvements in cutting machines for mining coal and the like
IPC: E21C35/00
Filed: 1923-09-21
Abstract: 225,643. Knapp, W., and Coester, E. Sept. 21, 1923. Armatures and field magnets, cooling; casings. -In a mining machine driven by an electromotor 12, the circular casing 40 of the motor 12 is so mounted in an outer casing 41 as to leave cooling spaces 42 for air driven bv a fan 43 on the motor shaft 40<1>, and the latter has channels 56 or the armature has channels through which air is circulated inside the motor casing 40 by a fan 55, this air being cooled by contact with the walls of the casing 40. Access may be had to the motor controller 19 by removing the cover 46. The controller mav be removed. by disconnecting a coupling 47, and its spindle 23 may be actuated from either side of the machine.
Patent GB-367319-A (GB)
Title: Method and means of controlling machines, especially counting machines, by means of moving visible marks
IPC: G06M7/04
Filed: 1930-08-08
Abstract: 367,319. Control of apparatus by light radiations ; light-sensitive cells ; valve circuits. ISENTHAL, A. W., Ducon Works, Victoria Road, North Acton, London.- (Assignee of Geffoken, H. ; 62, Steinstrasse, and Richter, H. ; 3, Wiederitzscherstrasse, both in Leipzic, Germany.) Aug. 8, 1930, No. 23798. Convention date, Aug. 10, 1929. Void [Published under Sect. 91 of the Acts]. [Classes 40 (iii) and 40 (v).] In a counting or sorting machine utilizing a light-sensitive element, a component which can pass only alternating current is interposed between n said element and the relay controlled thereby, in order that gradual changes in the characteristics of the former do not affect the relay circuit. In one embodiment, Fig. 2 (not shown), a selenium cell circuit is isolated from a relay circuit by a transformer. In the embodiment illustrated, a photo-electric cell 7 is connected in series with a high resistance 19 and battery 20. Sudden changes in potential of the point 21 in the circuit are communicated through a condenser 22 to the grid 23 of a valve 24 containing a relay 27 in its anode circuit, the grid normally being biased negatively by a battery 26 through a high resistance 25.