baber/WOPTO huggingface dataset:
Patent GB-599855-A (GB)
Title: Improvements in or relating to excitation systems for vapour electric devices
IPC: H01J13/48
Filed: 1945-06-19
Abstract: 599,855. Metal - vapour converters. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. June 19, 1945, No. 15600. Convention date, July 7, 1944. [Class 39 (i)] In a control circuit for the continuous excitation of a vapour-electric valve 13 having a make-alive electrode 18 and a keep-alive electrode 19, both energized from a condenser 23 connected across the output terminals of a rectifier 22, an impedance of such size is connected in the alternating current input circuit to the rectifier that the input voltage to the rectifier drops rapidly with increase in current, whereby the current flowing to the keep-alive electrode reduces the voltage below that required for operation of the make-alive electrode. As shown, Fig. 1, the impedance in the input circuit of the rectifier comprises a transformer 21 having a shunt flux path 28 between its primary and secondary windings. The potential across the condenser 23 is applied to the make-alive electrode 18 through a reactor 26 which when saturated permits a flow of current for initiating the cathode spot. An arc is then established to the keep-alive electrode causing a flow of current through the secondary winding of the transformer with consequent reduction of potential. This reduction of potential is such that the reactor 26 is no longer saturated and current flows substantially only to the keep-alive electrode. In an alternative arrangement, Fig. 2 (not shown), a condenser is connected in series with the primary winding of the transformer and the linear reactor 27, Fig. 1, in series with the keep-alive electrode, is replaced by winding the connection to the keep-alive electrode on an unbroken middle leg of the transformer. In a further embodiment, Fig. 3 (not shown), the input circuit to the rectifier includes a variable reactor having a saturation winding connected in series with the make-alive electrode. This saturation winding corresponds to the saturable reactor of Fig. 1. The Specification as open to inspection under Sect. 91 comprises also an arrangement, Fig. 3 (Cancelled, not shown), in which the keep-alive electrode is controlled by a D.C. potential which may be derived from an A.C. source and a full-wave rectifier, and the make-alive electrode is connected to the secondary of a transformer whose primary winding is in series with a condenser. In a modification, Fig. 6 (Cancelled) in which an alternating current keep-alive arc is used, two keep-alive electrodes A are provided and supplied with current by a transformer 133 the winding in the return circuit 25 serving the dual purpose of controlling the potential of transformer 35 and as a stabilizing reactor in series with the keep-alive arc. A further modification, Fig. 7 (Cancelled, not shown) utilizes two half-wave rectifiers between the secondary terminals of transformer 133 and a single keep-alive electrode. This subject-matter does not appear in the Specification as accepted.
Patent GB-967604-A (GB)
Title: A plough for winning coal and other minerals
IPC: E21C35/12
Filed: 1962-04-24
Abstract: 967,604. Mineral-mining machines. STAMICARBON N.V. April 24, 1962 [April 21, 1961], No. 15634/62. Heading E1F. In a mineral-mining plough a haulage chain 9 is so directly connected to a plough structure 8 rockably mounted on a sledge 10 that as the chain hauls the sledge along a face the chain exerts a positive turning movement on the plough structure to press the leading cutting edge of the plough structure into the face. Specifications 956,078 and 967,603 are referred to.
Patent GB-184626-A (GB)
Title: Improvements in or relating to sound producing apparatus
IPC: G10K9/20
Filed: 1921-06-07
Abstract: 184,626. Monnot, J. F. June 7, 1921. Diaphragm horns.- An electric horn is provided with two diaphragms adapted to emit sounds of different volume or tone, each being operable at will by a cam member common to both. In the example shown, diaphragms 4, 5 rest normally in the path of an electrically - operated cam 1, the diaphragm 4 being of smaller area and also contained in a partly-enclosed chamber at the back of the horn. A pivoted bifurcated member 6 is normally spring-pressed against one diaphragm 4 to hold it out of engagement with the cam 1. The member 6 carries the armature 10 of an electromagnet 9, which, when energized, tilts the member 6 to free the diaphragm 4 and hold up the other diaphragm 5. Alternatively, the member 6 may be tilted mechanically.
Patent GB-649167-A (GB)
Title: Improvements in or relating to rolls for the rolling of sheets and like purposes
IPC: C21D9/38
Filed: 1948-06-14
Abstract: In a method of making a roll for the rolling of sheets or like purposes, a central zone of a tough nature, an intermediate zone of relatively high tensile strength, and an outer hard zone, are obtained by normalizing or by hardening and tempering the roll, then heating over a depth including the intermediate zone to the required hardening temperature and quenching, then tempering to a higher tensile strength than that of the central zone, and then surface hardening.  The hardness of the intermediate zone may be increased towards the centre of the roll by controlling the temperature distribution during tempering so that the temperature curve falls towards the centre.  In a modification, the central zone is of the natural toughness of the roll in the cast or forged p  condition. The heating may be effected by burners or by induction heating and the tempering may be performed in a furnace.
Patent GB-125675-A (GB)
Title: Improvements in and relating to the Construction of Ships.
Inventor: EYNCOURT EUSTACE HENRY TENNYSO
IPC: B63B3/00
Filed: 1917-11-01
Abstract: 125,675. Eyncourt, Sir E. H. T. d', and Graham, T, Nov. 1, 1917. Frames and framing; hulls.-Relates to ships or the kind described in Specifications 120,467 and 125,170, having straight sides and bottom, in cross-section, meeting in one or more angular bilges. In this type of ship it is proposed to construct the parallel middle body with longitudinal frames 1, Fig 1, braced by widely-spaced transverse frames 2, and the end portions of the ship with closely-spaced straight transverse side and bottom members 3, Figs. I and VI. Where the longitudinal frame system joins the transverse system, curved longitudinal members are used. The water-lines at the bow are formed straight by the use of straight longitudinal ribs or framing; or they may be of the usual curved form at the bow and stern. Fig. II shows the body plan of the vessel, the righthand side being for the tow, and the left-hand side for the stern. Double bottoms are formed by means of transverse floor plates 13, Fig. VI. having straight edges, or by means of upper and lower transverse angle-bars braced on the lattice system. Double or single bottoms may be formed by longitudinal angle-bars braced by transverse floor plates at each transverse frame or intermediately thereof; for single bottoms, one or more of the longitudinal angle-bars are strengthened by intercostal or continuous longitudinal girders, the floor plates being continuous s or intercostal accordingly. In all the proposed arrangements, the straight side frames may be made of equal standard length. Fig. XI shows diagrammatically a form of vessel having the cross-sections formed of straight lines and also with the horizontal sections formed of straight lines both amidships and at the bow and stern. In this case, the straight transverse side members 34, Fig. XIII, are made without bevel, as shown on the right-hand side of the figure, or with a constant bevel, as shown on the the left-hand side.
Patent GB-1040416-A (GB)
Title: Mechanical seal and cyclone
IPC: F04D7/04
Filed: 1963-04-23
Abstract: 1,040,416. Seals. BORG-WARNER CORPORATION. April 23, 1963 [June 1, 1962], No. 16044/63. Heading F2B. [Also in Division B2] A sealing device for preventing leakage of fluid from a housing 15 along a shaft 12, Fig. 1, comprises a mechanical seal 16, Fig. 5, including a ring 22 which rotates with the shaft and a stationary ring 23 secured to the housing, the seal 16 being connected to a source of fluid under pressure via a cyclone 20 (see Division B2) which serves to clean the fluid before it reaches the seal 16. As shown, in the case of a centrifugal pump, the seal 16 is connected via a pipe 17, the cyclone 20 and a pipe 18 to the outlet 14 of the pump whereby part of the fluid being pumped is cleaned in the cyclone and supplied to a chamber 37 in the seal 16 so as to provide a liquid seal for the shaft 12 and to lubricate the sealing faces of the rings 22, 23. A hole 48 is provided in the pump impeller 11 to permit flow of fluid from the chamber 37 towards the pump inlet 13. Solids separated in the cyclone are returned with some of the fluid to the pump inlet through a pipe 21. The mechanical seal also includes a sleeve 26 secured to the shaft 12 and carrying a holder 27 for a spring 32 which urges the ring 22 and a cup-like seal 33 in the direction of the ring 23. In a two-stage pump, Fig. 2, the outlet 14a of the first stage is connected to cyclones 20a, 20b mounted in parallel and supplying clean fluid to mechanical seals 16a, 16b respectively. In another embodiment, the fluid from a pump outlet is cleaned in a pair of cyclones connected in series, the separated particles from both cyclones being returned to the pump inlet. The first cyclone may serve to remove gaseous material from the fluid, the degassed fluid being then cleaned in the second cyclone.
Patent GB-809084-A (GB)
Title: Improvements in or relating to stereoscopic viewing devices
IPC: G02B27/22
Filed: 1956-05-24
Abstract: 809,084. Stereoscopes. BRUGUIERE, G., and GOLASZEWSKI, M. May 24, 1956 [May 24, 1955], No. 16105/56. Class 97(1) In a stereoscope in which stereoscopic pairs are arranged in two parallel lines on a carrier member provided with sprocket holes, two frame members are provided manually movable in opposite directions against springs and having spring-loaded tongues to engage the sprocket holes to allow the carrier member to be moved in two opposite directions past the viewing eyepieces. As shown the stereoscope comprises a rear wall carrying spaced lens systems, a front wall carrying a diffusing screen 5 and detachably supporting a housing for a lamp 4, and an apertured inner wall 6, the rear wall supporting the frame members 12, 13. The member 12, 13 having operating knobs 14 and 15 for sliding them in opposite directions against springs 16, 17, Fig. 4, tongues 10, 11 being spring pressed into the sprocket holes 7<SP>1</SP>, Fig. 2, of the carrier member 7 to move the latter in one or other direction. The circuit for the lamp 4 may be controlled by the insertion of the member 7 into the apparatus and the latter may include suitable switching to allow a mains supply to be used.
Patent GB-669824-A (GB)
Title: Improvements in foot appliances
Inventor: HOLLAND FREDERICK WILLIAM
IPC: A61F13/06
Filed: 1948-06-16
Abstract: 669,824. Foot arch supporting appliances. HOLLAND & SON, Ltd., T. June 9, 1949 [June 16, 1948], No. 16183/48. Class 81 (ii). A pad, adapted to be worn on the foot to support the arch, comprises a shaped cushion of sponge rubber, or similar material, enclosed between two pieces of chamois leather or other soft material 38, stuck together around their edges, and a length of elastic fabric 5 which surrounds the foot and has its ends passed in through slots 7 in one of the pieces of chamois leather and secured by a suitable adhesive either to the leather or to the rubber cushion. Preferably the slots are parallel to each other.
Patent GB-576158-A (GB)
Title: Improvements in or relating to deflecting circuits for cathode ray tubes or the like
IPC: H03K4/12
Filed: 1942-11-17
Abstract: 576,158. Cathode-ray oscillographs. CINEMA-TELEVISION, Ltd., and WEST, S. S. Nov. 17, 1942, No. 16267. [Class 37] A deflecting circuit for use with a cathode ray tube or the like is arranged automatically to deflect the cathode ray beam at a plurality of different delineating rates, each equivalent to a different rate of deflection and occurring during successive cycles of the deflecting circuit. A condenser 1 is arranged to be charged at a constant rate by means of a charging device 2, which may comprise a pentode valve. A discharge circuit 3 connected across the condenser 1 is arranged to operate when a critical potential is reached so that a sawtooth voltage is produced across the condenser 1. A controlling device 4, which may comprise a scale-of-two divider, is arranged so that it can adopt a plurality of different conditions each providing a characteristic output voltage or current. The charging device 2 is so connected that for each condition of the controlling device 4 the charging current to the condenser 1 is charged so that it charges at a different rate. On the operation of the discharge circuit 3 to cause the flyback at the end of the sweep at the second rate the deflecting circuit reverts to its original condition and the cycle comprising the two sweeps repeats. When employing a scale-of-two divider the potential changes may be employed as shift potentials for the cathode ray tube so that the two different sweeps can be located at different positions on the screen. In addition a portion of the changes in potential may be employed to cause the trace brightness to be equal for the two different rates of deflection. The controlling device 4 may alternatively comprise a scale-of-five or a scaleof-ten divider so that more than two different rates are available. A scale-of-five circuit, for example, may be arranged to give either five different rates of deflection or four normal rate sweeps and one slower sweep. The charging device 2 may comprise a number of pentode charging valves or similar constant current devices each associated with its own condenser, the different valves being switched in consecutively to give different charging rates.
Patent GB-355715-A (GB)
Title: Improvements in the production of aromatic amines
Filed: 1930-05-27
Abstract: Aromatic amines are prepared by treating phenols of the benzene series, including crude phenols such as tar or fractions thereof, with ammonia or amines, which may be primary or secondary aliphatic, alicyclic and aralkyl amines, primary aromatic amines and such secondary aromatic amines as do not contain more than one aryl group attached directly to the nitrogen, at a raised temperature in the presence of chlorides of metals which are capable of forming more than one chloride. Suitable chlorides are ferric, ferrous, cobalt, manganese, cupric, cuprous, stannous chlorides, or mixtures thereof. In examples phenol and ammonia are reacted in the presence of hydrated ferrous chloride or anhydrous cuprous chloride and o-cresol and ammonia in the presence of anhydrous ferric chloride.  The Provisional Specification also refers to the amidation of phenols in general, including naphthols.
Patent GB-826903-A (GB)
Title: Improvements in or relating to fuel injection systems for internal combustion engines
IPC: F02M69/30
Filed: 1958-05-21
Abstract: 826,903. Charge forming apparatus. GENERAL MOTORS CORPORATION. May 21, 1958 [May 31, 1957], No. 16307/58. Class 7(3) Charge forming apparatus comprises an air intake passage 10 for supplying air to the cylinders of the engine, a throttle valve 16 in the passage to control the air flow therethrough, a device 18 for supplying a metered quantity of fuel to fuel nozzles 22 each arranged in the passage 24 downstream of the throttle valve and adjacent a cylinder of the engine, and a conduit 34 providing communication between the outlet of each nozzle and the intake passage upstream of the throttle valve, and a valve 38 in the conduit arranged for actuation by an engine temperature responsive device so as to restrict air flow through the conduit in inverse proportion to the temperature of the engine. The valve 38 is thus controlled by a temperature responsive device which may be located within the engine exhaust manifold cross-over passage (not shown) or may be disposed on the air intake conduit 10. The temperature responsive device may also control a fast idle cam (not shown). It is possible to provide communication between the conduit 34 and the conduit 10 upstream of the Venturi 14. With the engine cold the valve 38 will be closed. The invention may be used in combination with a device which gives fuel enrichment by altering the mechanical advantage of a fuel metering linkage.
Patent GB-1537515-A (GB)
Title: Method and apparatus for the insulation of cavity walls
IPC: B05B7/14
Filed: 1977-03-11
Abstract: 1537515 Pneumatic conveyers G C INSULATION Ltd 11 March 1977 [22 April 1976] 16317/76 Heading B8A [Also in Division E1] Particulate insulation material 34 is fed to a cavity in a wall or the like by air from a pump 10 the air being split into two streams at junction 20 with the first stream traversing material hopper 23 via air injection means 29 and then being reunited with the second stream at a junction 22. Pump 10 may comprise a number of selectively operable units for varying the flow rate. The intakes to pump 10 are connected via a hopper 16 to a suction nozzle (17) (Fig. 1, not shown) enabling the apparatus to be used as a suction cleaner for clearing up residues.
Patent GB-1034405-A (GB)
Title: Improvements in or relating to the recovery of carboxylic acids
IPC: C07C51/48
Filed: 1964-04-20
Abstract: A method for the recovery of carboxylic acids free of lactam from solutions thereof in concentrated sulphuric acid containing also e-caprolactam comprises extracting carboxylic acid with an inert imiscible solvent, e.g. an aromatic hydrocarbon such as benzene, toluene, xylene, chlorobenzene and carbon tetrachloride from the solution in concentrated sulphuric acid, the solution having concentration of sulphuric acid of at least 55% based on the sulphuric acid and water present in the mixture.  Preferably the extraction is effected at a temperature between 35 DEG  C. and 100 DEG  C. to increase the solubility of the acid to be extracted in the solvent employed.  Water may be added to the concentrated sulphuric acid solution containing carboxylic acid and lactam such that the resulting sulphuric acid has a concentration between 65% and 85% based on sulphuric acid and water in the solution whereby it will not provoke sulphonation of the aromatic hydrocarbons under the conditions used for extraction and the temperature in the range of 40-70 DEG  C. is used for the extraction.
Patent GB-1464332-A (GB)
Title: Apparatus for handling bulk material at sea
IPC: B63B27/22
Filed: 1975-04-21
Abstract: 1464332 Handling bulk material HOWALDTSWERKE-DEUTSCHE WERFT AG HAMBURG UND KIEL 21 April 1975 [20 April 1974] 16405/75 Heading B7A Apparatus for handling bulk material at sea, e.g. manganese gathered from the sea bed, comprises a vessel 5 having propulsion equipment and a conveyer (6), Fig. 1, not shown, for gathering the material, and at least one lighterreceiving chamber 7 for a lighter 9, and overhead bunkers 10 for loading the material into the lighters which bunkers are fixedly arranged above the chamber 7 and the parts 12, 13 of the vessel below the chamber 7 are formed by struts. A dryer (16), Fig. 1, is disposed between the conveyer (6) and the bunkers. The chamber 7 can extend obliquely to the centre-line of the vessel, and can have entry and exit openings. A plurality of chambers 7 can be used. The bottom of the chamber 7 can be closed by a buoyant box.
Patent GB-762759-A (GB)
Title: Apparatus for investigating the vibration of parts
Inventor: HARRISON SAMUEL MARTIN
IPC: G01H1/00
Filed: 1953-06-15
Abstract: 762,759. Electric indicating systems. NAPIER & SON, Ltd., D. July 6, 1954 [June 15, 1953], No. 16433/53. Class 40 (1). The amplitude and frequency of vibrations of e.g. a turbine blade, are measured by varying the resonant frequency of a circuit in accordance with the vibrations, the resonant circuit being coupled to an oscillator and absorbing energy therefrom in dependence on the relationship between the resonant frequency and that of the oscillator so that the oscillator output is amplitude modulated in accordance with the vibrations and this modulation indicated, e.g. on an oscilloscope. In the case of a turbine blade a condenser is formed by a strip of copper foil C, Fig. 2, lying between two sheets of mica gripped between the platform portion A<SP>2</SP> of the blade A and the circumferential surface B<SP>1</SP> of the rotor disc B, the elements B, B<SP>1</SP>, A<SP>2</SP> forming the outer electrode. The copper foil is connected by a lead C<SP>1</SP> to one end of a coil D surrounding the rotor shaft and connected thereto at the other end, the coil D and condenser forming the resonant circuit. With the foil C and mica extending over approximately half the platform width the condenser is sensitive both to flexural and torsional modes of vibration of the blade A. The resonant circuit is coupled by a stationary loop F embracing the coil D and a further coil F<SP>2</SP> to a known oscillator G<SP>1</SP>, Fig. 3, which includes in known manner a grid " dip " meter G<SP>2</SP> to indicate amplitude reductions in the oscillator signal. The oscillator is tuned to a point adjacent the resonant frequency and the oscillator output at G<SP>3</SP> is fed through a tuned demodulator to an oscilloscope which indicates as a wave the amplitude and frequency of the blade vibrations, Fig. 4 (not shown).
Patent GB-445814-A (GB)
Title: Method of making pigmented paper
IPC: D21H17/70
Filed: 1935-06-07
Abstract: 445,814. Pigmented paper. AMERICAN ZINC, LEAD & SMELTING CO., 943, Paul Brown Building, St. Louis, Missouri, U.S.A. June 7, 1935, No. 16566. Convention date, July 31, 1934. [Class 96] Opaque pigmented paper is made by adding undried, precipitated zinc sulphide which may contain 3 to 5 per cent of zinc oxide, to paper pulp, e.g. whilst agitating. An excess of zinc sulphide may be added to a small quantity of pulp, and the mixture added to the remaining pulp. The zinc sulphide may be formed by adding solutions of zinc sulphate and alkali thiosulphate simultaneously or separately to the pulp, or by mixing these chemicals as boiling solutions, maintaining the pH value constant by addition of a base, washing and filtering the precipitate which may then be steam heated, and adding it to the pulp. Specification 430,945 is referred to.
Patent GB-792228-A (GB)
Title: Improvements in or relating to metal-sheathed electric cables
Inventor: GARDINER HERBERT WILLIAM BENJA
IPC: H01B7/20
Filed: 1955-06-09
Abstract: 792,228. Cables. PIRELLI-GENERAL CABLE WORKS, Ltd. April 20, 1956 [June 9, 1955], No. 16578/55. Drawings to Specification. Class 36. A cable comprises a core containing one or more insulated conductors surrounded by a sheath of high tensile metal such as steel, around which there is a layer of bituminous material and an outer sheath of aluminium. Each of the sheaths may be initially of internal diameter greater than the external diameter of  the underlying layer and then reduced to bear on the underlying layer. Specification 785,654, [Group XXII], is referred to.
Patent GB-688522-A (GB)
Title: Improvements in or relating to a device for damping the vibrations of a piezo-electric crystal
IPC: G10K11/00
Filed: 1951-12-13
Abstract: 688,522. Piezo-electric crystals. SPERRY PRODUCTS, Inc. July 13, 1951 [July 20, 1950], No. 16648/51. Class 40 (viii). Means for damping the vibrations of a piezo-electric crystal consists of a backing member 40 in engagement with a vibrating surface of a crystal 10, the member having a varying composition to cause the acoustic impedance of a particular part of the member to diminish as the distance from the crystal increases. For example, the member may consist of a plastic matrix in which a number of metal elements are suspended; the concentration of metal elements being greatest adjacent the crystal surface and diminishing outwardly away therefrom. Alternatively gas bubbles may be formed in the plastic matrix and the metal parts omitted. The concentration of gas bubbles is arranged to increase outwardly away from the crystal surface.