baber/WOPTO huggingface dataset:
Patent GB-475938-A (GB)
Title: Manufacture of new azo dyestuffs
IPC: C09B35/28
Filed: 1936-05-26
Abstract: Azo dyes are made by tetrazotizing 1 molecular part of a diamine of the formula <FORM:0475938/IV/1> or a diamine of the formula <FORM:0475938/IV/2> where R1 and R3 may be substituted and R2 = an alkyl radical of at least 10 C atoms, and coupling with 2 molecular parts of the same or two different coupling components. Some of the dyestuffs may also be made by way of the corresponding nitroamino compounds.  The coupling components may be phenols, naphthols, naphtholsulphonic acids, naphthylamines and their sulphonic acids, aminonaphthols, their sulphonic acids or N-substituted derivatives, arylpyrazolones and their sulphonic or carboxylic acids, acetoaceticarylamides and monoazo compounds e.g. p-nitroaniline --> (acid) H acid.  They dye wool in various shades fast to washing and milling.  In examples dyes from the following components are described: 1-N-ethyl - N - 3<1> - amino - 4<1> - methylbenzoylamino - 4 - aminobenzene, 1 - N - dodecyl - N - 4<1> - aminobenzoylamino - 4 - aminobenzene, 1 - N - cetyl - N - 3<1> - or 4<1> - aminobenzoylamino-4 - aminobenzene, 1 - N - octadecyl - N - 4<1> - aminobenzoylamino - 4 - aminobenzene; coupling components; 1-(4<1>-sulphophenyl)-3-methyl-5-pyrazolone, salicylic acid, N-phenyl-2 : 8 : 6 - acid, 2 - naphthol - 6 : 8 - disulphonic acid, N - b  - hydroxyethyl - 2 : 8 : 6 - acid, 2 : 8 : 6 - acid, 1 - (2<1> : 5<1> - dichloro - 4<1> - sulphophenyl)-3-methyl-5-pyrazolone, 1-naphthol-4-sulphonic acid, 1-naphthylamine-4-sulphonic acid, 2-naphthol-6- or 8-sulphonic acid, 1-phenylaminonaphthalene-8-sulphonic acid, N-acetyl-2 : 8 : 6-acid, 2- or 1-naphthol-3 : 6-disulphonic acid, N-acetyl H acid, N-acetyl J acid, 2-amino-8-naphthol-3 : 6-disulphonic acid.  The diazo components may be made by nitrating a benzoylalkyl aniline and reducing either one or both nitro groups, thus 1-N-ethyl-N - 3<1> - amino - 4<1> - methylbenzoylamino - 4 - aminobenzene is made by nitrating N-ethyl-N-4<1>-methylbenzoylaniline (obtained from N-ethyl-N-phenylurea chloride and toluene in presence of aluminium chloride) and reducing.  The dinitro compound yields 4-nitroethylaniline and 3-nitro-4-methylbenzoic acid on hydrolysis with dilute sulphuric acid.  The higher alkyl compounds required as starting materials are made by condensing a long-chain alcohol with an aromatic primary amine in presence of the amine hydrochloride and then with a nitrobenzoyl chloride.  According to the Provisional Specification the diamines are of the second general formula above when R2 = alkyl.
Patent GB-217915-A (GB)
Title: Improvements in incubators
IPC: A01K41/00
Filed: 1924-06-20
Abstract: 217,915. Perrot, J. June 20, 1923, [Convention date]. Eggs, testing. -The eggs lying in apertures 12 in a plate by which they are carried in an incubator may be tested by placing a lamp beneath them. According to the Specification as open to inspection under Sect. 91 (3) (a) the lamp 91<1> is attached to a jointed handle 92 and enclosed in a reflecting casing 97, the upper side 98 being formed with an aperture and covered with a layer of felt 99. This subject-matter does not appear in the Specification as accepted.
Patent GB-1345724-A (GB)
Title: Method for producing elements of inorganic foam material
IPC: C04B38/06
Filed: 1971-05-14
Abstract: 1345724 Inorganic foam elements SENTRALINSTITUTT FOR INDUSTRIELL FORSKNING 14 May 1971 [15 May 1970] 14986/71 Heading B5A [Also in Division C1] The invention relates to inorganic foam elements identical with those of Specification 1,345,721, but is directed to a method of reducing crack formation during cooling by removal of outer layers of the block after solidification coupled with control of the temperature profile across the block prior to solidification. The elements may be cut in the manner forming the subject-matter of Specification 1,345,723 and cutting may be effected by local crushing as set out in Specification 1,339,343.
Patent GB-420368-A (GB)
Title: Improvements in or relating to the manufacture of pencils and the like
IPC: B43K19/16
Filed: 1933-05-24
Abstract: Pencil-lead sheaths are made from a paste obtained by incorporating wood fibre with a solution of a cellulose derivative, and if necessary evaporating a portion of the solvent, the paste being moulded to shape by extrusion &c.  The wood fibres used have a length at least four times the diameter and not less than 0,25 mm. Cellulose acetate, for example, dissolved in acetone, together with a plasticizer, and optionally a natural or synthetic resin as a cohesive, is mixed with wood fibre in a vacuum mixer, and the solvent is evaporated off till a stiff dough is obtained.  After moulding the remaining solvent is evaporated.  Hardening agents, accelerators, retarders, and colouring matter may be included in the composition. According to the Provisional Specification other plastics such as casein and natural or synthetic resins may be used as the binder, and fillers such as china clay may be added, and the sheaths may be applied to coloured pencils and crayons.
Patent GB-167901-A (GB)
Title: Means for supporting garments while being aired in front of a gas or other fire or electric heater
IPC: D06F57/08
Filed: 1920-06-03
Abstract: 167,901. Williams, C. M. M. June 3, 1920. No Patent granted (Sealing fee not paid). Clothes horses.-A clothes rail comprises a tube or rod &c. to which supporting legs are hinged or pivoted so as to open away from the rod and automatically spread apart and form a firm support for the rod without any supplementary movement. As shown, the rail comprises a tube a, Figs. 1 and 2, having saddle-pieces b secured to it, the arms of the saddle-pieces being connected by members e upon which the legs d are pivoted. The saddle-pieces are formed with projections c which bear against the studs f which are secured to the legs. In a modification, the upper ends of the legs may be shaped so as to abut against the underside of the tube, the studs on the legs and the projections on the saddle-pieces being dispensed with.
Patent GB-151145-A (GB)
Abstract: 151,145. Watson, E. A., and M-L Magneto Syndicate. Aug. 22, 1919. Addition to 128,985. Systems, electric.-Interrupters c actuated alternately by the cam a and having one contact on each connected to the opposite electrodes of the battery e, have their other contacts connected to one end of the transformer primary d, the other end being connected to the middle of the battery. By this arrangement reversal of the current at successive operations is obtained.
Patent GB-1521615-A (GB)
Title: Nuclear reactor control
IPC: G21C7/12
Filed: 1976-04-13
Abstract: 1521615 Control rod insertion arrangement UNITED KINGDOM ATOMIC ENERGY AUTHORITY 29 March 1977 [13 April 1976] 15136/76 Heading G6C A nuclear reactor, e.g. a sodium cooled fast breeder reactor includes control rods 13 of neutron absorbing material, at least one rod being suspended above the core by a first latch 17 which is responsive to a trip signal to release the rod for insertion into the core by free fall or stored energy propulsion to a first position defined by a second latch 19, the rod being then adjustable from the first position. The rod 13 is normally held in a withdrawn position by means of an electromagnetic latch 17 which engages a latch member 18 associated with the rod. When a fault, e.g. in the coolant circulation occurs, a computer causes latch 17 to release member 18 and the rod 13 falls until member 18 is held by a second electromagnetic latch 19. Latch 19 is mounted on the end of a screw threaded member 15 movable axially by means of a nut 20 and the initial position of the latch 19 is determined by the computer. After member 18 has engaged latch 19, the position of the rod may be adjusted by rotation of nut 20. A series of selectively operable second latches 19 may be provided, each latch 19 being actuated in response to a particular reactor fault.
Patent GB-849288-A (GB)
Title: Improvements in or relating to apparatus for controlling machine tools
Inventor: BOOSEY FREDERICK ROBERT
IPC: B24B49/04
Filed: 1958-05-12
Abstract: 849,288. Grinding. SIGMA INSTRUMENT CO. Ltd. May 12, 1959 [May 12, 1958], No. 15209/58. Class 60. A grinding machine, for treating a discontinuous surface of a workpiece, has control apparatus, to terminate grinding when the workpiece has been ground to the required size, comprising gauging means having at least one element for sensing the surface of the workpiece to produce a first signal when an oversize portion of the workpiece is opposite said element and a second signal when a discontinuity in the surface of the workpiece is opposite said element, and means for analysing said signals so that failure of the signals to alternate causes a third signal to be produced for terminating grinding. A splined shaft 1 is gauged during grinding by jets 4, 4 supplied with air through a control orifice 6 by a pipe 7 leading to a constant pressure source of compressed air. Pressure downstream of orifice 6 communicates with the interior of a capsule 8 in a chamber 9 to which is applied a constant pressure determined by orifice 11 and leak-off valve 12. A contact 13 on the end of the capsule co-operates with adjustably fixed contacts 14, 15. A contact 27 makes with a contact 28 when either winding 17, 25 of a relay 18 is energized, and makes with a contact 26 when neither winding is energized. A .switch 31. is closed automatically when a workpiece is in position for grinding. When oversize portions are opposite the jets 4,4 contact 13 touches contact 14 and winding 17 of relay 18 is energized, so that contact 27 touches contact 28. When discontinuities are opposite the jets 4, 4, contact 13 touches contact 15 and winding 25 of relay 28 is energized, so that contact 27 still touches contact 28. When the portions are ground to size, contact 13 does not touch contact 14, and winding 17 of relay 18 is not energized, so that contact 27 touches 26. The next time that contact 13 touches contact 15 relay 32 is energized opening contacts 33 to stop the machine. The apparatus may be used when grinding shafts with one or more flats or grinding discontinuous flat surfaces. Water may be used instead of air, and a single jet may be used. When grinding a surface without discontinuities a switch 29 is operated to cut the winding 25 out of circuit.
Patent GB-585828-A (GB)
Title: Improvements in or relating to the production of monoesters of isoascorbic acid
IPC: C07D307/62
Filed: 1943-09-16
Abstract: Fat soluble isoascorbyl esters are especially valuable as anti-oxidants for edible fats.ALSO:Esters of isoascorbic acid containing an unsubstituted ene-diol group are prepared by reacting isoascorbic acid with a saturated aliphatic monocarboxylic acid in the presence of concentrated sulphuric acid as an esterification catalyst and solvent for the reaction products, or with acyl halides derived from such monocarboxylic acids.  The preferred strength of the sulphuric acid is about 95 per cent, since at this concentration it is especially adapted for performing the dual function of esterification catalyst and solvent.  In examples: (1) d-isoascorbic acid is esterified by treatment at room temperature with lauric acid in the presence of 95 per cent sulphuric acid for about 6 hours.  The reaction mixture is poured slowly on to ice, extracted with ether, evaporated and dried, and finally washed with petroleum ether; (2) d-isoascorbic acid is heated with palmitoyl chloride for six hours at 75 DEG  C.  The product is extracted with hot water, cooled and filtered; (3) d-isoascorbic acid is heated with myristoyl chloride in the presence of pyridine at 50 DEG  C. for two hours.  d-Isoascorbic acid is esterified as described in example (1), with (4) myristic acid; (5) palmitic acid; (6) stearic acid; (7) caproic acid; (8) 9 : 10-dihydroxystearic acid.  It is stated that an important result of the process of the present invention is that the esters formed retain the characteristic properties of compounds containing an unsubstituted enediol group.  The compounds of the invention have valuable anti-oxidant properties and are particularly suitable as anti-oxidants for edible fats.
Patent GB-799192-A (GB)
Title: Improvements in or relating to metal working and cutting processes
Inventor: GIDDY CHARLES SYDNEY
IPC: C10M173/02
Filed: 1956-05-16
Abstract: A fluid for application to the coacting parts in metal working and cutting processes (see Group XXII) comprises an aqueous solution of a metallic chloride, bromide or iodide with a halide concentration greater than 0.03 gm. ion per litre, together with one or more corrosion-inhibiting substances in sufficient quantity to render the fluid substantially non-corrosive.  The halides may be those of the alkali or alkaline earth metals Be, Mg, Zn, Cd, Al, Ci, Mn, Fe, Co or Ni, and are preferably present in a halide concentration of 0.1 to 1 gm. ion per litre.  Corrosion inhibitors mentioned are Na2HPO4, Na2CO3, NaNO2, NaH2PO4, Na3PO4, KNO2, KCrO4, K2Cr2O7 and CH3COONa with borax or triethanolamine as a buffering agent.  In an example the effect of adding 1/2 per cent wt. NaCl to a prior art composition comprising an aqueous solution of sodium acetate, sodium nitrite and triethanolamine is described.  Other examples compare the effectiveness of sodium, potassium, calciu, barium and ferric chlorides and of sodium chloride, bromide and iodide. According to the Provisional Specification the following substances may also be used as corrosion inhibitors: ammonium nitrite and amine nitrites such as dicyclohexylammonium nitrite; alkali metal, ammonium and amine chromates, stannates, phosphates and benzoates; sodium or potassium arsenite; sodium bicarbonates and silicates; and octodecylamine.
Patent GB-659465-A (GB)
Title: Improvements in and relating to magnetic wire measuring devices
IPC: G01B7/04
Filed: 1949-06-08
Abstract: 659,465. Magnetic tests and measurements. BRITISH THOMSON-HOUSTON CO., Ltd. June 8, 1949, No. 15295. Convention date June 15, 1948. [Class 37] [Also in Groups VIII and XIX] Apparatus for measuring the length of magnetic material, e.g. steel wire, travelling at varying high speed, comprises means for producing a succession of magnetic marks on the wire at known intervals and a pick-up head at a known, fixed distance away, associated with means for counting the number of marks received, together with means for masking extraneous marks, means for feeding the marking mechanism from the pick-up voltage, and means for initiating and controlling the marking mechanism. The wire 1, travelling in guide-blocks 2, passes first a marking head 3 then a pick-up head 4, the voltage pulse received at 4 being amplified by valves 7, 12, and fed to a negatively-biassed thyratron 21, so that when a positive pulse of sufficient amplitude is applied to the grid of the thyratron 21 it fires, causing a current pulse in marking head 3, and a voltage pulse across resistance 27 actuating an electronic pulse counter 28. The gain of amplifier 12 is controlled by the bias obtained from an automatic-gain-control circuit consisting of amplifier valve 30 and diode 38, the input being the amplified pulses from valve 7, and the output being a negative voltage across resistor 41, the value of this voltage being dependent on the repetition rate of the input voltage pulses. The output from valve 12 is thus substantially constant, as the amplification of the valve is decreased by increased bias when the speed of the wire is increased and gives a larger impulse in the pick-up head 4. The thyratron 21 is made to fire at this constant output, and thus does not fire for double marking rate or for extraneous magnetic marks on the wire. Initiation of the marking is produced by stray noise voltages or by a pulse injector constituted by a neon tube 43 across a condenser 46, the intermittent firing of the neon tube producing a saw-tooth voltage pulse, which is amplified by a valve 51, whose gain is controlled from the gaincontrol circuit described above, to feed into thyratron 21. The pulse injection is delayed by a known short time by resistance 59 and condensers 61, 62 when the equipment is started up, introducing a constant error on the meter reading. A permanent magnet 81 may be placed in front of the marking head 3 to reduce noise voltages from the wire.
Patent GB-647484-A (GB)
Title: Improvements in or relating to fins for heat exchangers
IPC: F25J3/00
Filed: 1947-06-11
Abstract: 647,484. Tubular heat exchangers. HYDROCARBON RESEARCH, Inc. June 11, 1947, No. 15371. Convention date, June 21, 1946. '[Class 64(iii)] A heat-exchange fin, particularly for use in cooling air to be rectified by the oxygen and nitrogen products of rectification, comprises a plate having a central opening and a multiplicity of radial vanes 21, 24 formed by cutting the plate along spaced radial lines and deflecting substantially all of the material between each pair of lines out of the plane of the plate and into a plane extending at an angle of from 60 degrees to 90 degrees to the plane of the plate. The figures show part of a .disc for insertion in a heat exchange tube, the disc having flanges 12, 26 which abut against adjacent discs. The exterior of a tube may be provided with annular discs, similarly apertured and flanged and having outer peripheries of hexagonal or other polygonal shape. Pairs of coaxial tubes are fitted with similar inner and outer fins, the spaces between the tubes of each pair containing similar fins or fins composed of longitudinally corrugated sheet metal. The tubes and fins may be bonded together by coating them before assembly with solder, and heating them after assembly to melt the solder. In an assembly in a cylindrical shell of units each comprising a single tube or a pair of coaxial tubes fitted with such fins, the edges of hexagonal fins abut and the spaces between the units and the shell are packed, e.g. with crumpled aluminium foil or wood blocks. Specifications 340,765 and 355,205 are referred to.
Patent GB-532519-A (GB)
Title: Driving mechanism for planing machines
IPC: B23Q5/26
Filed: 1939-05-24
Abstract: 532,519. Hydraulic power transmission. STURM, E. May 24, 1939, No. 15440. [Class 69 (ii)] A hydraulic gear for reciprocating the table of a long planing machine is constructed so that the variations in the pump output are gradual and so that there is a constant transmission of power. The table rack 3 is geared to a shaft 4 clutched to the power shaft 6 which is driven from an electric motor 11 by means of a pump unit P and motor unit M, which may each be constructed as in Specification 439,027, [Group XXVI], with means for varying the eccentricity of the rotary housing relatively to the piston drum to vary or reverse the liquid flow. The units M, P are controlled respectively by levers 10, 8, operated from a cam shaft controlled by dogs on the table 2, and the mechanism is set so that the motor M is at maximum eccentricity while the table is being reversed, the eccentricity of the pump being adjusted during the reverse.
Patent GB-638517-A (GB)
Title: An improved means for creating rain effects adapted for cinematographic studios
Inventor: ACKLAND-SNOW ARTHUR
IPC: A63J5/04
Filed: 1948-06-10
Abstract: 638,517. Spray producers. D. & P. STUDIOS, Ltd. June 10, 1948, No. 15493/47. [Class 69 (iii)] Apparatus for producing artificial rain in a film studio includes a rotary spray head a with perforations a<SP>1</SP> supplied with water through stationary pipes i and m inter-connected by a rubber tube n. The head a is attached to a hollow shaft b driven about the pipe i by an electric motor h through pulleys g and e, and a belt f. The motor, pulleys, &c. are contained within a sound-proofed casing d which may have a removable side wall.
Patent GB-1214862-A (GB)
Title: Improvements in or relating to fluid-flow control valves
Inventor: MLCOCH VIKTOR
IPC: F16K5/20
Filed: 1968-04-01
Abstract: 1,214,862. Valves. CKD BLANSKO, ZAVODY JIRIHO DIMITROVA NARODNI PODNIK. 1 April, 1968 [5 April, 1967], No. 15502/68. Heading F2V. A valve comprises a spherical plug 3, and sealing rings 6 each axially movable in a recess 20 in the valve body, and retained in position by a ring 8 clamped by a flange on the end of a conduit 10. The ring 6 has a face 17, acted upon by the pressure of the controlled fluid so as to force a contact face 16 on to the plug 3, a face 18 selectively exposed to a pressure fluid, e.g. the controlled fluid, when the plug is rotated, to force the ring off the plug, and a face 19 exposed to atmospheric pressure via a passage 14. Flow from the conduit 10 to the space adjacent the face 18 is controlled by a three-way valve, which alternatively connects the space 18 to atmosphere.
Patent GB-1084454-A (GB)
Title: Improvements in or relating to the manufacture of corrugated board
Inventor: BROATCH JOHN DONALD
IPC: D21H17/32
Filed: 1963-04-19
Abstract: Corrugated board is made on a machine of the Fourdrinier or vat type involving the use of a wire, by supplying board stock to the wire, forming a web thereon, applying from an aqueous medium to the formed web when it is self-supporting a manno-galactan or glucomannan derived from plant seeds or corms, e.g. locust-bean gum or guar gum, forming the web into fluting medium and preparing corrugated board therefrom.  The stock used may be a waste furnish.  Two or more gums may be applied simultaneously.  The aqueous medium for the gum may also contain additives, e.g. sodium silicate, an emulsifying agent, a wetting agent or a preservative. It may be applied at an intermediate drying stage.
Patent GB-447577-A (GB)
Title: Improvements in folding self-supporting cantilever wings for aircraft
IPC: B64C3/56
Filed: 1935-05-29
Abstract: 447,577. Folding-wings for aircraft. BLACKBURN AEROPLANE & MOTOR CO., Ltd., Seaplane Base, and BUMPUS, F. A., Elloughton, both in Brough, near Hull. May 29, 1935, No. 15630. [Class 4] A folding self-supporting cantilever aircraftwing, which may be folded against the fuselage, includes a stub wing a and a folding portion c hinged together by an obliquely inclined hinge b which is contained substantially within the wing contour, the stub wing surface abutting the wing surfaces c<1> being formed approximately as part of the surface of a cone or other solid of revolution. Forwardly of the hinge the junction of the wing portions a and c is arranged as shown. Locking-means may be provided for the wings when in their extended position and indicators show when the connection has been made. The abutting surfaces may depart from surfaces of revolution in which case they are arranged so that they recede from one another during folding. The surface c<3> may be undercut instead of the surface of the stub wing. Specification 239,971, [Class 4], is referred to.