baber/WOPTO huggingface dataset:
Patent GB-611016-A (GB)
Title: Improvements in or relating to automatic stabilisation of equipment on a moving bodysuch as an aircraft
IPC: G05D1/08
Filed: 1943-08-09
Abstract: 611,016. Automatic control systems. SMITH & SONS (ENGLAND), Ltd., S., (formerly SMITH & SONS (MOTOR ACCESSORIES), Ltd., S.), and MEREDITH, F. W. Aug. 9, 1943, Nos. 12865 and 15836. Drawings to Specification. [Class 38 (iv)] Attitude.-To stabilize a body pivotally mounted upon another body such as an aircraft and thereby furnish a datum for indicating and control instruments a motor is arranged to rotate the first body about an axis with reference to which that body is to be stabilized and in an opposite sense to the rotation of the second body; the motor is so controlled that its acceleration is proportional to the rate of turn of the first body, an ouput quantity proportional to the rate of turn being derived from a device mounted on the first body. When this quantity is a voltage, such as an A.C. voltage from a rate of turn device as described in Specification 611,005, [Group XXXVIII], it may either be directly applied to the motor so that its acceleration is proportional to the voltage or the time integral of this voltage may be applied to the motor so that its speed is proportional to the integrated voltage. A monitoring device may be added, whereby the motor is operated after a short period disturbance to restore the stabilized body to a datum position. Specifications 576,248, 576,249, 678,303, [Group XXXVI], 611,011, [Group XX], 611,018 and 611,020 also are referred to. Specifications 611,006 and 611,009 are referred to in the Provisional Specifications.
Patent GB-740570-A (GB)
Title: New copper-containing disazo dyestuffs
Inventor: ROWE GEORGE ALSTON
IPC: C09B35/20
Filed: 1953-05-08
Abstract: The invention comprises dyestuffs of formula:-<FORM:0740570/IV(c)/1> where R is H, a benzoyl group the phenyl radicle of which may be substituted by methyl, halogen or alkoxy groups, or an acyl group of not more than 4 carbon atoms which may be made by the dealkylating coppering of the dyestuffs obtainable by coupling tetrazotized 3.31-dimethoxy- or -diethoxy-4.41-diaminodiphenyl with the appropriate naphthalene sulphonic acids. Coppering may be effected with ammoniacal solutions of a copper salt, e.g., the sulphate, optionally in the presence of an organic base such as pyridine. Specified coupling components are: 1-acetyl-, -n-butyryl-, benzoyl-, -o-chlorobenzoyl-, -2, 4-and -2, 5-dichlorobenzoyl- and -p-methyland -methoxybenzoyl-amino-8-naphthol-4,6-disulphonic acids.  The dyestuffs yield blue dyeings in cellulosic fibres. Examples are provided of the use of certain of the above specified reagents in the preparation of dyestuffs an additional component used being 1-amino-8-naphthol-4, 6-disulphonic acid.
Patent GB-476852-A (GB)
Title: Improvements in or relating to variable pitch propellers automatically regulated to constant speed
IPC: C09B39/00
Filed: 1937-05-05
Abstract: 476,852. Fluid-pressure servomotorcontrol systems. SIEMENS APPARATE UND MASCHINEN GES. May 5, 1937, No. 12890. Convention date, May 6, 1936. [Class 135] [Also in Group XXXIII] A variable-pitch propeller which is automatically regulated hydraulically to constant speed and including a closed oil circuit containing an oil pump, a regulating valve and an oil motor and with means for connecting these with the blades for varying the angle is characterized by the accommodation of the whole of this apparatus within the hub of the propeller, the oil pump being driven by a wind-mill screw. The blades 11 of the screw propeller are coupled by gearing 6 with an oil motor 5 adapted to be driven by an oil pump 2 which is in turn actuated by a wind-mill screw 3. The pipe connections between the pump and the motor are controlled by a valve 8 disposed in the hub so that on rotation of the propeller centrifugal force tends to move the valve, such tendency being under the constraint of an adjustable spring 19. Under normal conditions, the valve is positioned as shown and no oil passes to the pump 5. With rise or fall of propeller revolutions, the valve moves so as to couple up either the pipe 13 or the pipe 14 to the delivery side of the pump 2, thereby changing the pitch and remaining operative till the propeller revolutions are back to normal. For minimum pitch position a cam or projection 15 on the blade root actuates a bell-crank lever 16 and contacts with a pin 17 so as to move the control piston valve 8 back to the position in Fig. 1.
Patent GB-511309-A (GB)
Title: Means for tuning-in wireless receiving apparatus to given broadcasting stations
IPC: H03J5/12
Filed: 1938-04-30
Abstract: 511,309. Adjusting wireless apparatus. SOFFIETTI, G., and RICCHIARDI, P. C. April 30, 1938, No. 12956. Convention date, Jan. 25. [Class 37] In a press-button tuning device, the rectilinearly slidable keys or the like 5, each carry two independently adjustable tappet rods 6<1>, 6<11>, adapted to co-operate with respective sliding plates 4<1>, 4<11>, secured to opposite stretches of two endless bands or cords 3<1> passing round pulleys 2 on the tuning shaft 1. Normally, the tappet rods are clear of the paths of the plates so that the usual manual tuning control may function. When a key is depressed, however, one of the rods 6<1>, 6<11>, thereof, engages and moves backwardly the corresponding plate 4<1>, 4<11>, the tuning shaft 1 being rotated and the other plate advanced by the cord 3<1> until stopped by the second rod 6<1> or 6<11> in the tuning position. Depression of a key effects the return of any previously operated key unless a spring is provided to effect such return automatically immediately upon release. The operative edges of the plates 4<1>, 4<11>, may diverge as shown in chain lines, and the plates may operate the tuning shaft through other means, e.g. a rack.
Patent GB-625725-A (GB)
Title: Improvements in or relating to the production of malleable iron
IPC: C21D5/10
Filed: 1945-05-24
Abstract: In a method of processing whiteheart malleable iron from white cast iron by heating it to a temperature above 85 DEG C. and below the melting point of iron, the white cast iron is heated in a substantially gas-tight furnace wherein the initial atmosphere of air is replaced during the heat-treatment, continuously or intermittently, by either water vapour or carbon dioxide or a mixture of both, the rate of replacement being so selected as to maintain an actively carburizing atmosphere in the furnace without any or excessive oxidation.  The gaseous medium may pass through a circuit external to the furnace the addition of water and/or carbon dioxide being made before or simultaneously with its entry into the furnace or the medium may circulate only within the furnace the addition being made directly, thereto, in either case an amount of medium corresponding to the addition is withdrawn.  The ratio of carbon dioxide to carbon monoxide is preferably maintained at 0.4. Specification 585,921 is referred to.
Patent GB-1014523-A (GB)
Title: Biasing circuits for electrical circuits utilizing voltage controlled negative resistance diodes
IPC: H03F3/12
Filed: 1963-04-02
Abstract: 1,014,523. Tunnel diode supply arrangements. RADIO CORPORATION OF AMERICA. April 2, 1963 [May 9, 1962], No. 13085/63. Heading H3T. A biasing circuit for a voltage controlled negative resistance diode comprises a non- linear resistor having a dynamic resistance which is lower than the absolute value of the minimum negative resistance of the diode at the operating voltage at which this minimum negative resistance occurs. As described an oscillator, Fig. 5, comprises a resonant transmission line 44, 46 connected to a tunnel diode 48. The non-liner resistor is a backward diode 50 placed in parallel with the tunnel diode at a voltage node on the line and connected to a bias supply 52 via a variable resistor 54. Referring to Fig. 1, the backward diode may be chosen to have a characteristic 36 which exhibits a lower resistance at the point 40 than the tunnel diode, thus producing a stable circuit as seen from the bias source. At greater values of E however the dynamic resistance of this diode is greater, thus reducing the power losses in the circuit.
Patent GB-370682-A (GB)
Title: Improvements in or relating to protective systems for alternating current circuits
IPC: H02H3/353
Filed: 1931-05-04
Abstract: 370,682. Protective cut-out systems. IGRANIC ELECTRIC CO., Ltd., 147, Queen Victoria Street, London.-(Cutler-Hammer Manufacturing Co. ; Milwaukee, Wisconsin, U.S.A.). May 4, 1931, No. 13093. [Class 38 (v).] In order to protect a polyphase circuit against abnormal conditions re sulting in phase-reversal phase failure, or un balance of voltage a three-electrode electror tube of the gaseous type is connected to the system so that the gric has impressed upon it a voltage which lags a given angle with respect to the anode voltage. This ensures the starting of a discharge current through the tube substantially at the beginning of the positive half-cycle of the impressed voltage. The discharge current passes through a relay winding so that, normally, the relay is maintained closed and the circuit breakers closed, but in the event of phase-reversal &c. the grid voltage is more negative than the critical discharge voltage of the tube during the greater part of the positive half-cycle of the plate voltage so that the tube becomes conductive only during the last fraction of the half-cycle, or not at all. Consequently, the relay winding is inadequately energized and the relay and circuit breakers open. In the connections shown in the Figure, the primary 1 of a transformer is connected across the phases A, B and its mid-point is connected through non- inductive resistances 2, 3 to phase C. The mid-point of the transformer 1 is connected to the cathode 5 and the phase B through the relay winding 8 to the plate 6. The grid is connected to the secondary 9 of the transformer 1 to the mid-point of the resistances 2, 3 so that, normally, it carries a potential lagging in phase in respect to the plate. The disturbance of this angle of lag on fault produces the protective action described. In a modification, Fig. 10 (not shown), two tubes are employed connected so that a substantially constant continuous current passes through the relay.
Patent GB-801845-A (GB)
Title: Improvements in or relating to half tone printing plates
Inventor: CARTER REGINALD DAVID
IPC: B41N1/06
Filed: 1955-05-05
Abstract: A half-tone plate is prepared by machine engraving by means of an electronically controlled engraving device using photoelectric scanning, an Al-base alloy plate provided on the surface to be engraved with a thin brittle layer of a chemical compound or compounds which adheres firmly to the surface and inhibits burring of the edges of the impression formed during engraving.  The alloy contains besides Al and the usual impurities (Fe, Si, Ti), 0.5 to 4 per cent Cu, 0 to 1.5 per cent Pb, and optionally up to 0.4 per cent Cr and up to 0.05 per cent Ti additional to any impurity; examples being Cu 1.0 and 1.3 per cent, Pb 1.0 per cent, Fe 0.45 per cent, Si 0.25 per cent, Cr 0.2 per cent, Ti 0.02 per cent, Al the remainder. The brittle surface may be produced by anodizing or phosphating in the latter case the "Alocrom" (Registered Trade Mark) treatment with an aqueous solution of H3PO4, NaF, and Cr2O3 being suitable.  The Provisional Specification shows alloys having 3 per cent Cu and having 1.3 per cent Pb.
Patent GB-394471-A (GB)
Title: A method and apparatus for the electromagnetic separation of materials
IPC: B03C1/035
Filed: 1932-05-06
Abstract: 394,471. Magnetic separators. JAGGI, R. C. FORRER-, 4, Rue de l'UniversitÚ, Strasbourg, Bas-Rhin, and MINES DOMANIALES DE POTASSE D'ALSACE, 140, Faubourg d'Altkirch, Mulhouse, Haut-Rhin, both in France. May 6, 1932, No. 13118. Convention date, May 8, 1931. [Class 72.] Mixed products are separated by directing them horizontally between the poles of a magnet or electromagnet so that they fall freely in the field produced, the poles of the magnet being formed so that the lines of force are directed as if they emanated from the centre of curvature of the parabola of the free fall of the particles not affected by the field. The polepieces have the shape of cylinders, the directrices of which, in the vicinity of the origin of the fall, have the same centre of curvature as the free fall parabola. The products are fed from a hopper 1 on to a slide 3a which is horizontally oscillated so that a sheet of material leaves the edge p of the slide and falls between the polepieces 4, 5. The paramagnetic and diamagnetic products are directed to the right and left of the free fall parabola 8 and are collected in boxes 9, 10 while the particles falling in the parabola 8 fall on an elastic band 11 and are diverted into boxes 12, 13. The end 4a of the soft iron pole 4 is made of ferro-cobalt.
Patent GB-131639-A (GB)
IPC: H04B1/16
Abstract: 131,639. Latour, M. June 30, 1917, [Convention date]. Addition to 127,318. Thermionic repeaters. - A valve amplifying system of the kind described in the parent Specification is arranged to amplify telephonic currents supplied to either side of the system and means are provided to prevent arcing in the lamp due to the inequality of the impedances on either side of the lamp system. The system is also arranged to deform the speech currents in a direction opposite to the deformation due to the line as described in Specification 131,056, thus avoiding the use of loading coils. In the arrangement shown in Fig. 1, the current to be amplified is led by the lines L<1> or L<2> to the primary winding of a transformer T<1>, and the amplified current is supplied to the primary winding of a transformer T<3>, the secondary windings S<1>, S<2>, S<3>, and S<4> of which are connected in the line. Resistances R<1>, R<2>, Fig. 2, connected diagonally to the terminals of the secondary windings S<1>, S<2>, S<3> and S<4> prevent arcing in the lamps and tend to establish automatic balancing of the two sides of the line L', L<2>. In the modification shown in Fig. 3, self-induction coils S<1a>, S<1b>, S<1c>, and S<1d> shunted by resistances R', R', R<3>, and R<4> respectively are inserted in the line to obtain an automatic balance. In a further modification, the transformer T<3> is divided into two independent transformers.
Patent GB-202026-A (GB)
Title: Improvements in or relating to closures for football cases and other articles containing an inflatable air-bag or the like
IPC: F16K15/20
Filed: 1922-05-10
Abstract: 202,026. Nield, A., and Blick, G. H. W. May 10, 1922. Plain n plug g stoppers. - A closure for football cases and like articles containing an inflatable air bag, of the kind comprising a detachable cap or disc adapted to fit the opening in the football case and provided with a flexible flange for engaging behind the periphery of the opening, is formed with a plug for closing the inflation nozzle of the air bag. In the form shown in the Figure, the plug 15 is attached to the cap or disc 12 by a flanged head 15a secured between the disc 12 and the material forming the flexible peripheral flange 13. The plug is inserted in the inflation nozzle 14 of the bladder 10 while the latter is extended outside the football, whereupon the disc 12 is forced into position in the opening of the football case, while the nozzle 14 becomes sheathed within itself as shown. The nozzle may be further sealed by a rubber band 16. In a modification, the plug is provided with an annular flange adapted to passover the outer end of the inflation nozzle.
Patent GB-132107-A (GB)
IPC: D01G11/04
Abstract: 132,107. Frier, J. D. Oct. 26, 1918. Addition to 118,907. Tearing, severing by.-In the invention described in the parent Specification, the torn strips are wound upon the tearing- rollers; according to the present invention the tearing-rollers are provided with automatic gripping-devices for the purpose of holding an edge or edges of the fabric against their surfaces during a portion of a revolution, the torn cloth being then released so that it can fall over carrying-rollers &c., or over a suitable laying-device. The gripper fingers b are pivoted on the surface of the roller a, Fig. 1, and their position is controlled by a cam h and springs d. The carrying-roller s rotates in the opposite direction to the roller a and at a greater surface speed; its surface may be smooth or rough, or it may take the form of a worm; it may be larger at one end than at the other. Mechanism is provided to stop the motion of the machine in case of failure of the action of the gripping-device, with the consequent movement of the tearer carriage u to one end or the other of its supporting rails. The link v of the stop motion is hung on a hook on the pivoted bar y which rests on a bar z. Upon endlong movement of either bar, consequent upon the movement of one or other of the pivoted frames w due to contact therewith of the carriage, the bar y is freed from its support, drops, and allows the link v to slip off the hook.
Patent GB-782533-A (GB)
Title: Improvements relating to rotary pumps
IPC: F04D9/04
Filed: 1955-05-06
Abstract: 782,533. Centrifugal pumps. BUNGARTZ, P. May 6, 1955 [May 6, 1954; Dec. 22, I954], No. 13212/55. Class 110 (1). In a pump having a vertical impeller spindle disposed within a tube through which the liquid is raised, driving means and a main impeller arranged above the liquid level, and an auxiliary impeller mounted on a lower part of the spindle for raising the level of the liquid in the tube, the spindle is hollow and is closed at the end to be immersed in the liquid, and a supporting rod extends in the hollow spindle and is carried in a bearing in a lower part of the spindle. In the pump shown, the main impeller 6 and the submersed auxiliary impeller 7 are carried by a hollow shaft 8 which at its upper end is journalled in a bearing 1 and near its lower end is provided with an insert 12 by which it is journalled on the end 13 of a fixed rod 10 which is carried by a flanged disc 11. A suction tube 4 is provided. Where a corrosive liquid such as hydrochloric acid is to be pumped, the main impeller and casing, which are above the liquid level, need only be provided with corrosion-resistant coatings on the side in contact with the liquid.
Patent GB-902481-A (GB)
Title: Electromagnetographic recording media
IPC: G03G5/16
Filed: 1958-07-17
Abstract: 902,481. Magnetic and electric recording apparatus. RANK-XEROX Ltd. July 17, 1958 [July 18, 1957], No. 13245/62. Divided out of 902,479. Class 40 (2). [Also in Group XXXV] The Specification relates to, and claims, the composite recording medium, described in Specification 902,479, in which electrostaticallyretentive photo-conductive-insulating areas are interspersed with magnetically-retentive areas. The said photo-conductive area may contain selenium, anthracene, sulphur, sulphides, selenides, oxides of calcium, zinc, cadmium.
Patent GB-257023-A (GB)
Title: Improvements relating to the removal of arsenic from tin
IPC: C22B9/10
Filed: 1925-05-20
Abstract: 257,023. Harris, H. May 20, 1925. Dry processes of refining tin. - Arsenic is removed from arsenical tin by treating the tin with a reagent consisting of or comprising caustic alkali, preferably caustic soda, or materials such as sodium carbonate or stannate which will yield alkali oxide, with or without the addition of a modifying agent which may be sodium chloride, a retarding agent which may be alkali carbonate or a metallic oxide, and an oxidizing agent which may be sodium nitrate. The tin may be treated in a molten state with the reagent in solid or molten state, for example by the means described in Specifications 142,398 and 199,660.
Patent GB-718703-A (GB)
Title: A process for the separation of one or more components in accordance with molecular structure from a mixture of organic compounds
IPC: C07C7/152
Filed: 1951-06-05
Abstract: The separation of desired components in accordance with molecular structure from a mixture of compounds of different molecular structures by contacting with a complex-forming substance, capable of forming complexes with the desired component, followed by separation of the complexes formed, comprises adding to the mixture an auxiliary substance which forms, with the complex-forming substance, complexes having the same crystalline structure as the complexes of the component to be separated and which can be separated by a known method from said component.  The complex-forming substance may be urea, for separating straight-chain compounds, e.g. normal hydrocarbons; thiourea for separating branched chain hydrocarbons or naphthenes, e.g. isopentane, iso-octane, cyclohexane or methylcyclohexane; seleno- or telluro-urea; and metallic chlorides, e.g. for separating cholesterol from wool grease, or aromatic hydrocarbons from ethers.  If the concentration of the component to be separated is below a critical value, no formation of crystalline complex occurs in the absence of the auxiliary substance.  This is preferably similar to the component to be separated, the complexes thereof forming mixed crystals, and the difference in the number of carbon atoms being 4 or less.  The separation of the auxiliary substance from the other components may be effected by distillation, and a substance of lower boiling-point is preferred. Extraction or crystallization may, alternatively, be used.  Inert auxiliary agents, e.g. diluents, may also be employed.  The complex-forming agent may be used alone or as a solution, generally saturated or supersaturated.  Complex formation without an auxiliary substance may be used first to separate as much of the desired component as possible.  In examples: (1) a fraction containing n-decane is extracted with urea in methanol and, after addition of n-dodecanol, a further extraction is effected; (2) a mixture of hydrocarbons and n-dodecanol is extracted with alcoholic urea and n-decanol added prior to a further extraction; (3) a fraction containing 1,6-dimethyl naphthalene is treated with aqueous antimony trichloride, and further treated after adding a -methyl naphthalene.  Specification 686,701 is referred to.
Patent GB-133933-A (GB)
IPC: H01F27/30
Abstract: 133,933. Ferranti, S. Z. de. Aug. 27, 1918. Transformers.-The coils are clamped by means of wedge members with a number of inclined surfaces at intervals along their lengths. In the transformer shown in Fig. 1, arched open-work girder members a have flanges b clamped against the straight side elements c, and adjustable studs d, with insulated heads e to grip the conductors. The wedge plates h, fare arranged between the straight parts of the conductors and the side elements c, the stationary plate f resting against the conductors g while the plates h rest against the side c and can be drawn in opposite directions by bolts and nuts i. In a modification, the wedge elements are formed in the meeting edges of two rings j, k, Fig. 6. A screw n works in lugs l, m to rotate the rings relatively to one another. Springs may be compressed under the bolts employed to keep the wedges in engagement. Three wedge plates may be employed, only the centre one being movable. Specification 133,727 is referred to.
Patent GB-118694-A (GB)
Title: Improvements in Speed-controlled Electrically Operated Machines.
Inventor: JEFFCOTT HENRY HOMAN
IPC: H02P25/12
Filed: 1917-09-19
Abstract: 118,694. Jeffcott, H. H. Sept. 19, 1917. Motor regulated for constant speed by tuning- fork or the like.-A machine 12, Fig. 1, is driven at a substantially constant speed by a motor 1 which has its stator windings connected to a commutator 3; brushes 5 are rotated around the commutator by means of an auxiliary synchronous motor 8, the stator of which is supplied with an intermittent continuous current through a vibrating contact-maker 9, such as a tuning fork, vibrating bar, or spring, causing part of the circuit 10 to dip into and out of a cup 11 of mercury. The rotor of the machine 8 and the brushes 5 are supplied with continuous current. The speed of the motor 1 will correspond to that of the brushes 5 around the commutator 3. Different speeds may be obtained by varying the period of the tuning fork &c.