baber/WOPTO huggingface dataset:
Patent GB-593485-A (GB)
Title: Improvements in anthraquinone dyes and in the colouration of organic derivatives of cellulose
IPC: C09B1/26
Filed: 1945-02-02
Abstract: 2-Carboxy- or 2-sulpho-1-amino-3-cyano-4-substituted-amino anthraquinones are prepared by treating the corresponding 2-carboxy- or 2-sulpho-1-amino-4-substituted-amino anthraquinones with a water-soluble cyanide under mild reaction conditions.  The substituent in the 4-substituted-amino group is an alkyl, cycloalkyl, aralkyl or aryl group.  During the preparation of the 2-carboxy compounds it is preferable to avoid the presence of air. The products are used for dyeing organic derivatives of cellulose. In examples: (1) and (3) 1-amino-2-carboxy-3-cyano-4-butylamino- and 1-amino-2-carboxy-3-cyano-4-anilido-anthraquinones are prepared by adding aqueous sodium cyanide to an aqueous solution of 1-amino-2-barboxy-4-butylamino-anthraquinone and sodium p bicarbonate, and 1 - amino - 2 - carboxy - 4 - anilido - anthraquinone and caustic soda respectively and warmed in the absence of air, and dye cellulose acetate in a green-blue shade; (2) 1 - amino - 2 - sulpho - 3 - cyano - 4 - butylamino - anthraquinone is prepared by warming an aqueous solution of sodium cyanide and 1-amino - 2 - sulpho - 4 - butylamino - anthraquinone and dyes cellulose acetate in a green-blue shade.  1-Amino-2-carboxy-4-butylamino-, 1-amino-2-carboxy - 4 - anilido- and 1 - amino - 2 - sulpho - 4 - butylamino-anthraquinones which dye cellulose acetate materials are prepared by warming an aqueous solution of copper acetate, sodium carbonate and butylamine or aniline to which has been added an aqueous solution of sodium hydroxide and 1-amino-2-sulpho- or 1-amino-2-carboxy-4-bromanthraquinone.  The Specification as open to inspection under Sect. 91 refers also to the dyeing of organic derivatives of cellulose with 1 : 4-diamino-anthraquinones containing a cyano and/or a carboxy group in the ortho position in the same nucleus as the amino groups.  1 : 4 - Diamino - 2 - carboxy - 3 - cyano- and 1 : 4 - diamino - 2 - sulpho - 3 - cyano - anthraquinones are prepared by a method similar to that described above.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1253731-A (GB)
Title: Improvements in regulating valves for fluids
IPC: F15B13/02
Filed: 1969-01-17
Abstract: 1,253,731. Valves. ROBERT BOSCH G.m.b.H. 17 Jan., 1969 [17 Jan., 1968], No. 2758/69. Heading F2V. [Also in Divisions G2-G3] A flow regulator for controlling the flow from pump 1 to a steering cylinder 10 has a spool 12 provided with a lateral metering orifice 19 and biased leftwards by spring 17 such that, at low pump speeds, by-pass port 6 is closed and work port 8 is open to receive fluid passing through orifice 19. When the pressure drop across orifice 19 reaches a certain level, the spool begins to open port 6 so as to allow bypass flow, and the flow rate to cylinder 10 will then rise, fall or remain constant with increasing pump delivery according to the angle at which orifice 19 is disposed relative to port 6. This angle can be adjustable or maintained constant by preventing spool rotation such as by anchoring spring 17, by using a conical spring or by a guide pin. There may be a pair of orifices 19 and these or a single orifice may be embodied in an adjustable and removable end of the spool. Relief ball 27 vents chamber 23 to allow total by-pass when excess load pressures arise. A damping bleed orifice 15 feeds chamber 23. In Fig. 6, not shown, grooves (34) in the spool replace orifice 15.
Patent GB-636575-A (GB)
Title: Improvements in or relating to automatic frequency synchronising circuit arrangements
IPC: H03L7/107
Filed: 1948-01-30
Abstract: 636,575. Automatic frequency control systems. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and MORTLEY, W. S. Jan. 30, 1948, No. 2877. [Class 38 (iv)] The synchronization of oscillators O1, 02 is effected by means of the phase detector PD which adjusts the reactance valve RV controlling 02. The filter comprising the opposed rectifier R1, R2 and condenser C is inserted between PD and RV to reduce the phase modulation of 02 by unwanted signals from PD. R1 and R2 act as a non-linear resistor and change the time constant of the filter as the degree of synchronization changes.
Patent GB-231411-A (GB)
Title: Improvements in and relating to the production of bituminous paints and the like
IPC: C09D195/00
Filed: 1925-02-02
Abstract: 231,411. Lechler, P. [Firm of]. April 25, 1924, [Convention date]. Paints. - Bituminous paints containing metal soaps in suspension are made by mixing an aqueous alkali-soap solution with bituminous paint, adding a solution of one or more salts of the metal or metals whose soaps are required, and separating the aqueous alkali-salt solution formed. The bituminous paint may comprise, for example, coal-tar pitch, chlorbenzene and tetrachlorethane, and raw cresols and solvent naphtha may be added to the separated paint. The soaps of copper and mercury may be used to form antifouling paints.
Patent GB-743852-A (GB)
Title: Improvements in or relating to electro-magnetic control devices
IPC: H01F7/14
Filed: 1953-02-02
Abstract: 743,852. Springs. MILWAUKEE GAS SPECIALTY CO. Feb. 2, 1953 [Feb. 8, 1952; Aug. 21, 1952; Oct. 28, 1952], No. 2927/53. Class 108 (3). [Also in Groups XXIX and XXXV] A normally closed valve, opened electromagnetically, is supported and urged to its closed position by a pair of normally flat springs of the form shown in the Figure.
Patent GB-591550-A (GB)
Title: Improvements in and relating to gas water heating appliances
IPC: F24H9/20
Filed: 1945-02-06
Abstract: 591,550. Fluid-actuated valves. FRIEDMAN, L. Feb. 6, 1945, No. 2969. [Class 135] A gas valve for a gas water heater, of the kind in which the valve is controlled by the flow of water through a venturi tube, has the latter formed in two parts, one part 6 including the throat being integral with its housing, and the other part 9, being made separately.. The part 9, which is attached to the casing by a nut 12 is so dimensioned as to provide a gap 17 whereby water pressure at the throat is transmitted to a diaphragm 4 for actuating the valve. Instead of the gap 17 between the parts 9 and 6, the parts may be adapted to be held in contact whilst slots are milled in the end of either or both of the parts to provide water passages.
Patent GB-722673-A (GB)
Title: Improvements in or relating to engine indicators
Inventor: BEALE EVELYN STEWART LANSDOWNE
IPC: G01L23/08
Filed: 1953-02-03
Abstract: 722,673. Engine-indicators. STANDARD TELEPHONES & CABLES, Ltd. Feb. 3, 1953, No. 3029/53. Addition to 693,950. Class 106.(2). An engine indicator as claimed in Claim 1 of the parent Specification is modified by the addition of means to invert the negative pulses coming from the " divide-by-two " circuit so that corresponding positive pulses are obtained for operating the gas-filled tube in the time-base. The original coupling circuit between the anodes of the " divide-by-two " circuit V2a, V2b, and the gas-filled tube V3 is shown in Fig. 1 and is made via the third bank SIC of a selector switch. In the parent Specification the smaller positive pulse coming from V2a or V2b was used for triggering the tube V3, and a larger and more reliable negative pulse was not employed because its polarity was not suitable for triggering the tube V3 direct. The modified circuit shown in Fig. 2 includes a transformer T1 so connected between the " divide-by-two " circuit and the tube V3 that the large negative pulse is reversed in polarity and is applied as a positive pulse to V3 control grid, the smaller positive pulse no longer being employed for this purpose. Fig. 3 shows a further modification in which the reversal of the pulse sign is effected by a choke Ll which resonates with its selfcapacitance causing a large enough overshoot on the second half-cycle to produce a positive pulse to fire the tube V3. A condenser C is added so as to provide a low-impedance path to the ground line E from the earth end of the inductance L1. An additional switch bank SID is provided in either modification to provide a free-running position for the grid of V3 as shown at position 1.
Patent GB-144347-A (GB)
Title: Improvements in gauges, more particularly for use for gauging tapered holes
IPC: G01B3/56
Filed: 1919-02-08
Abstract: 144,347. Draper, B. Feb. 8, 1919. Bevels.-A device for measuring and indicating the angle of inclination of tapered holes and for other purposes, such as the angle of approach of inclined surfaces, comprises a main member 1, movable gauge bars 4, and members 5, 6 slidable in a slot 2 in the member 1. The member 1 has a handle 3 through which passes the slide member 5, and this member is connected to the gauge bars 4 by means of links 9. The remote ends of the bars 4 are attached to the main member 1 by means of other links 9, and links 8 connect the bars to the sliding members 6. As the end 7 of the sliding member 5 is moved towards the handle, the gauge bars 4 will be pressed outwards until the outline of the bars 4 engage the surfaces of the bole. The parts can be clamped in set position by means of clamping-screws 12, 30. To indicate the angle of inclination, a slotted bar 14 is fixed to one of the gauge bars and is provided with a slide 15 having a circular head 16 with a reduced portion adapted to move in the slot 2 of the member 1 and is retained in position by a saddle-piece 18. The slide 15 has a squared end 13, on which fits the boss of an indicating- pointer 22 co-operating with a scale-plate 24 on the handle 3.
Patent GB-927696-A (GB)
Title: Improvements in automatic gain control circuit arrangements
IPC: H04N5/18
Filed: 1960-01-28
Abstract: 927,696. Automatic control. FERNSEH G.m.b.H. Jan. 28, 1960 [Jan. 28, 1959], No. 3116/60. Class 38 (4). [Also in Groups XL (b) and XL (c)] An arrangement for deriving a control voltage proportional to the peak value of a unidirectional signal (see Group XL (c)) is used to maintain the peak white level constant in a television transmission. Pick-up tube 52 feeds via pre-amplifier 56 into a main amplifier 57, the peak white level in the output of which is measured by the device 58. A control voltage proportional to the peak white level is derived from device 58 and compared in comparison circuit 59 with a fixed reference potential from source 60. Any difference drives motor 55 to adjust an iris diaphragm 53 in front of the tube so as to maintain the peak white level constant. The arrangement may also be applied to film-scanning equipment (Fig. 7, not shown), the output from the control device being amplified in a magnetic amplifier and utilized to vary the illumination provided by the light source. In order to obtain an additional rapid-acting control of the output, the control voltage from device 58 may be also employed to vary the gain of amplifier 57, a time-constant circuit 64 being interposed so that this control slowly diminishes at the same time as the main control loop becomes operative.
Patent GB-1376064-A (GB)
Title: Rivet setting tool for blind rivets
IPC: B21J15/38
Filed: 1972-01-24
Abstract: 1376064 Blind riveting MARSON FASTENER CORP 24 Jan 1972 [29 Jan 1971] 3203/72 Heading B3U A rivet setting tool for blind rivets comprises a body element having a main portion 12 and an offset driving portion 13, rivet mandrel gripping means provided by a plurality of jaws 40 disposed within the offset driving portion, and actuating means which controls the jaws, the actuatingmeans including an elongate operating handle formed by a lever arm 16 pivotally connected to the main body portion 12 by a pivot pin 17 which has a pair of end portions passing through the handle and through spaced side portions 14, 15 of the body portion 12 so as to project beyond the side portions, wherein one of the end portions of the pivot pin has an enlarged terminal head 18, Fig. 7, and, beneath the head, a polygonal, e.g. square, section holding portion 20 which fits closely within an opening 21 of complementary polygonal form in the respective adjacent side portion of the main body portion, and wherein the side portions 14, 15 each have a raised boss 27, 28 which surrounds and substantially shields the respective adjacent projecting part of the end portions. The other end portion of the pin 17 extends through a bore in a polygonal, e.g. square, section holding element 23 fitted into an opening of complementary polygonal form in the side portion 15. In use the handles 12 and 16 are forced apart causing pulley member 32 to move towards anvil 34. This movement forces open the jaws 40, due to the engagement of the jaws with a frusto-conical part 39 of the anvil and an actuator 41, and comprises a spring 43. A mandrel of a blind rivet is then placed within openings 36 and 51 of the anvil and actuator respectively after which the handles are released allowing the spring 43 to move the member 32 away from the anvil 34. Due to the engagement of the jaws with surface 44 of a member 57, the jaws engage the mandrel after which the handles are closed so as to set the rivet.
Patent GB-884692-A (GB)
Title: Pin registration system of producing slide transparencies for overhead projection
IPC: G03B21/132
Filed: 1960-01-29
Abstract: 884,692. Slide transparencies. TECNIFAX CORPORATION. Jan. 29, 1960 [March 3, 1959], No. 3230/60. Class 98(2). A slide transparency is made up of a number of separate transparencies in register; these are printed from master sheets carrying designs or coloured images, these master sheets being prepared one by one on a registratiori board having locating pins which engage in holes in the sheets, to ensure correct registration; the prints are made by exposing the master sheets and film sheets to illumination while located on the registration board, the said board again being used to assemble the final transparencies in correct registration. Fig. 1 shows a drawing being prepared on a single master sheet 20, which lies on a board 16 having three registration pins 18, the pins passing through holes 22 in the sheet. An underlying grid sheet 23 may be provided to facilitate drawing the design. A second master sheet 20<SP>1</SP> is placed over the first (Fig. 2), and further designs or images made thereon, so that the two sheets 20, 20<SP>1</SP> together provide a composite design. In the example shown, sheet 20 carries the outline. of a house, and sheet 20<SP>1</SP> the door and windows. Further master sheets are prepared as required. Prints are then made from the master sheets, one by one, by placing a master sheet and a lightsensitive film sheet in correct registration on the board, and exposing to light. A more detailed description of the method of printing, and the apparatus therefor, is given in Specification 881,029. After the prints are developed, they are assembled by once more using the registration board 16. A frame 70 is located on the board by the pins 18, and the successive transparency sheets, all of which have locating holes for the pins 18, are placed in correctly registered superposition. In the example of Fig. 6, all the transparencies are permanently secured in superposed position by adhesive strips 76 along the edges ("static" slides). In the example of Fig. 9, the two transparencies 78 and 87 are hinged to the frame 70, as at 80, so that either, both, or neither. may be swung into superposed registration with transparency 24 ("dynamic" slides).
Patent GB-687988-A (GB)
Title: Improvements relating to containers for pressure fluids
IPC: F17C13/06
Filed: 1951-02-09
Abstract: 687,988. Making hollow-ware. BENSON, E. H. Feb. 9, 1951, No. 3267/51. Class 83 (ii). [Also in Group XXVIII] A pressure fluid container (see Group XXVIII) is formed of upper and lower cylindrical sections 10, 11 of drawn aluminium having abutting ends 10a, 11a inwardly flanged and joined by a oircunferential weld 12. Prior to welding the domed top of the section 10 is reinforced by having welded to it internally a radial flange 14a, Fig. 2, of a valve union 14.
Patent GB-425505-A (GB)
Title: Improvements in or relating to pressing and like machines for textile materials
IPC: D06C15/00
Filed: 1934-02-01
Abstract: 425,505. Feeding webs. PICKARD, F. H., 23, The Avenue, Roundhay, Leeds. Feb. 1, 1934, No. 3312. [Class 100 (i)] The several rolls 1 which feed the several webs of fabric to a pressing or like machine are driven through separate gear wheels 13, clutches, &c., so that any roll can be stopped independently of the rest.
Patent GB-139276-A (GB)
Title: Improvements in furnaces for hardening or tempering steel tools, or for heating or annealing metals, glass pottery or the like
IPC: C21D9/00
Filed: 1919-02-12
Abstract: 139,276. August, J. R. C. Feb. 12, 1919. Metal-heating, glass, pottery &c. furnaces.- In a gas-fired furnace for hardening or tempering steel tools, or for heating or annealing metals, glass, pottery, and the like, regeneratively-heated gas and air are supplied through pipes 3, 4 respectively to a combustion chamber 5 having inclined sides and floor 7 upwardlv inclined towards the outlet leading into the pre-heating chamber 1, which is in communication with the hardening-chamber 2. The roof of the combustion chamber is rounded and serves to deflect the gas downwards. The combustion products from the furnace escape into a hood 8, which encloses the air regenerator tubes 11 cast integrally with headers and with the hood. The gas is heated in pipes arranged as shown above the air conduits. A similar combustion chamber 5 is arranged on the opposite side of the chamber 1.
Patent GB-556119-A (GB)
Title: Improvements in or relating to ampoule and like files of abrasive material
IPC: B67B7/92
Filed: 1942-03-17
Abstract: 556,119. Ampoule files. PHARMACEUTICAL SPECIALITIES (MAY& BAKER), Ltd., and GRUBB, H. W. N. March 17, 1942, No. 3507. [Class 60] An ampoule or like glass cutting file is formed by cutting up a compound sheet consisting of two layers of pulp board or other soft material with an interposed layer of abrasive such as silicon carbide, the parts thus formed having an abrasive end or edge.
Patent GB-849199-A (GB)
Title: Improvements in or relating to the preparation of poly-thiuram disulphides
Inventor: HAKEN PIETER TEN
IPC: C07D285/38
Filed: 1959-01-30
Abstract: Polythiuram disulphides are prepared by treating a polar solvent solution of a polydithio carbamic acid derived from a primary or secondary polyamine, with an oxidising agent, the pH of the reaction mixture being maintained in the range of 6 - 7 throughout the reaction (see also Group IV(b)).  The polydithio carbamic acids may be derived from polyamines by interaction with CS2 in aqueous or alcoholic ammonia solution ; specified polyamines include ethylene diamine, 1-methyl and 1:2-dimethyl ethylene diamines and polyethylene polyamines.  The oxidising agent may be chlorine, bromine, iodine, a hypochlorite, a hypobromite, air, oxygen, H2O2 or nitrous acid obtained from a nitrite and acid.  Suitably, acid is added to a solution of a polydithio carbamate to adjust the pH to 6-7, then the oxidising agent is added gradually together with acid as required to maintain this pH.  The acid may be a mineral acid or a weak acid, e.g. acetic or boric acid.  The polar solvent may be water, an alcohol or an ether.  Reaction is suitably effected at up to 50 DEG C.ALSO:Poly thiuram disulphides are prepared by treating a polar solvent solution of a poly-dithio carbamic acid derived from a primary or secondary polyamine with an oxidising agent, the pH of the reaction mixture being maintained in the range of 6-7 throughout the oxidation.  The oxidising agent may be chlorine, bromine, iodine, a hypochlorite, a hypobromite, nitrous acid prepared from a nitrite and acid, hydrogen peroxide, air or oxygen.  Suitably, acid is added to a solution of a poly-dithio carbamic to adjust the pH to the required value and then the oxidising agent is added gradually, the pH being maintained in the stated range by addition of acid as necessary.  The acid may be a mineral acid or a weak acid such as formic, acetic, propionic, butyric or boric acid.  The polar solvent may be water or an organic solvent, e.g., an alcohol or an ether.  Reaction may be effected at up to 50 DEG  C.  The poly dithiocarbamic acids may be alkylene bis acids containing 2-10 carbons in the alkylene chain, e.g. ethylene, 1-methyl ethylene and 1 : 2-dimethyl ethylene bis dithio carbamic acids Poly-dithiocarbamic acids derived from poly ethylene polyamines may be used.  The preferred dithiocarbamic acids are prepared by reacting the polyamine with CS2 in an aqueous or alcoholic ammonium hydroxide solution.  In an Example, ethylene diamine is reacted with CS2 in aqueous ammonia, sulphuric acid is added to adjust the pH to 6,5 and H2O2 is slowly added while this pH is maintained by further addition of acid yielding ethylene bis thiuram disulphide.
Patent GB-670428-A (GB)
Title: Improvements in or relating to fuel systems for aircraft
Inventor: BOWNS DESMOND EDWARD
IPC: B64D37/20
Filed: 1949-02-09
Abstract: 670,428. Emptying tanks. ROLLS-ROYCE, Ltd. Feb. 9, 1950 [Feb. 9, 1949], No. 3587/49. Class 21 [Also in Group XXIX] A valve for discharging fuel from. aircraft fuel tanks simultaneously in a predetermined ratio and delivering it to a common line comprises a pressure-responsive means subjected to the fuel pressures in the individual pipelines from the tanks and operable to control valve members disposed one in each of these pipe lines. As shown, a valve body 12, Fig. 2, is provided with a common outlet 11 disposed below a box-like chamber 15 containing a de-aerated liquid, e.g. paraffin, and inlets 7-10 connected to separate tanks. The chamber 15 has rigid ends and flexible sides; the sides constituting pressure-responsive diaphragms 14 each associated with an inlet and connected by a link 22 to a valve member 13. An increased flow from any tank produces in its pipe connection to the valve an increased pressure therein to deflect the diaphragm associated therewith inwards and move its valve towards closure. Since the liquid in the chamber 15 is uncompressible the other three diaphragms will be deflected outwards to adjust the amount of opening of their valves to maintain, in this case, identical flows from each tank. To enable the ratio between the flows to be adjusted sluice plates 16 may be fitted in each inlet. In another embodiment, a valve body 23, Fig. 3, is provided with a common outlet 21 and inlets 17, 18, having a flexible diaphragm 20 mounted therebetween connected by links to valve members 19 disposed in each inlet.
Patent GB-432893-A (GB)
Title: Pile fabric looms
IPC: D03D39/02
Filed: 1934-02-03
Abstract: 432,893. Pile-fabric looms. MOHAWK CARPET MILLS, Inc., Amsterdam, New York, U.S.A.-(Assignees of Kellogg, W. D., Fradenburgh, J., and Dube, D.D.; Amsterdam, New York, U.S.A.) Feb. 3, 1934, No. 3621. Convention date, Feb. 15, 1933. [Class 142 (ii)] In an Axminster loom wherein the pile threads are severed by one or more knives 34 which are pulled by a cable 37 over a comb like cutter 24 arranged across the loom, this cable is tightened during cutting but slack at other times. The cutters are shown applied to a loom for weaving a double pile fabric, but may be applied to other types of loom, e.g. that described in Specification 422,913. When cutting is to take place the cutter 24 is moved up to the pile threads 18 by a cam 31 and lever 28 along guides 20 which can be adjusted vertically to determine the length of the tufts. The cutter 34 is then pulled across the loom by a cable 37 which passes round a tensioning pulley 40 and has its ends secured to a drum 39 which is oscillated by a sector 56 and a cam 63. The pulley 40 is moved by a cam 44 to tension the cable during the traverse of the knife 34.