baber/WOPTO huggingface dataset:
Patent GB-608766-A (GB)
Title: Improvements in turbine blades
IPC: F01D5/28
Filed: 1945-11-21
Abstract: A turbine blade has a metal root and the shaft or operative portion formed from a mixture of sintered metal and ceramic or ceramic-like powders in which the metal content of the mixture decreases as the distance from the root increases.  In a modification the shaft is formed with a metal core provided with a coating of the mixture.  The metal powder may be made from a pure metal such as iron, nickel, chromium, cobalt, tungsten, molybdenum, titanium or their alloys. The ceramic material is preferably a refractory material such as an oxide of beryllium, aluminum, zirconium, magnesium, thorium or a mixture of these oxides such as spinal zircon.  Quartz, titanium oxide and porcelain (mixture of kaolin, quartz and felspar) or mixtures of steatite with the steatite group of materials and ceramic-like materials such as hard glass may also be used.
Patent GB-772943-A (GB)
Title: Improvements in brake shoe assemblies particularly for railway vehicles
IPC: F16D69/04
Filed: 1955-11-03
Abstract: 772,943. Brake shoes. WESTINGHOUSE AIR BRAKE CO. Nov. 3, 1955 [Nov. 12, 1954], No. 31461/55. Drawings to Specification. Class 103 (1). In a moulded brake shoe assembly, a composition friction body is adapted for frictional engagement with a member to be braked and a composition backing-plate is attached to the body for reinforcement thereof. The composition backing plate comprises a thermosetting resin (such as phenolic-aldehydes, melamines, ureas and alkyds) and a fibrous or laminated reinforcing material embedded therein (such as cotton, wood, paper, asbestos, spun glass and metal wire). The composition friction body includes a high percentage of cast-iron chips, a certain percentage of thermosetting resin binder material unvulcanized rubber and asbestos filler materials. The composition backing- plate may be moulded simultaneously and together with the composition friction body using a thermosetting resin binder or may be formed separately and bonded together with a suitable cement or secured by rivets.
Patent GB-663653-A (GB)
Title: Improvements in self-contained lighting units for attachment to marine and fishing buoys, otherwise known as buoy lamps
IPC: B63B22/16
Filed: 1948-12-06
Abstract: 663,653. Mechanical switches, without quick action. CRAMPIN, H. Dec. 2, 1949. [Dec. 6, 1948] No. 31477/48. Class 38 (v). [Also in Group XI] A single-pole screw-down type switch, positioned in a buoy lamp comprises a lamp holder H of the type used for double-contact bayonet-capped bulbs in which the liner has been removed to below the level of the top of the plungers P and a dome-shaped cap D screwed on to the liner, the cap having a tapped hole B through which passes a screwed rod B carrying an operating knob E and a contact disc I.
Patent GB-387983-A (GB)
Title: Improvements in or relating to apparatus for the dyeing or analogous treatment of textile threads
IPC: D06B5/16
Filed: 1932-11-08
Abstract: <PICT:0387983/IV/1> Textile threads are dyed or otherwise treated with liquids on a perforated tube 4 of stiffened paper which is secured to the perforated metal spindle 3 by recessed members 8, 9, the edges of the paper fitting into the recesses.  The member 9 is screwed on to a plug 11 in the end of the spindle so as to press tightly on the edge of the paper.  The paper may be cylindrical or cone shaped.
Patent GB-1219535-A (GB)
Title: Improvements relating to electric bridge circuits
IPC: G05B1/02
Filed: 1969-06-23
Abstract: 1,219,535. Semi-conductor switching circuits. HOLZER-PATENT A.G. 23 June, 1969 [21 June, 1968], No. 31534/69. Heading H3T. [Also in Division G1] In a switching bridge circuit comprising resistors 3, 4 either or both of which measure a variable such as temperature and oppositely polarized windings 7, 8 of a relay, the output circuit of an amplifier 9 is connected across winding 7 and the input circuit is connected across the bridge diagonal so that unbalance in the bridge is amplified to create a net magnetic field in the relay. The bridge is powered by A.C. or pulsed current.
Patent GB-512014-A (GB)
Title: Improvements in the manufacture of metal tubing
IPC: B21C37/09
Filed: 1938-11-01
Abstract: 512,014. Making multiply tubes. ARMSTRONG, J. J. V. (American Rolling Mill Co.). Nov. 1, 1938, No. 31555. [Classes 83 (ii) and 83 (iv)] Angular bending; welding, soldering. - A multiply metal tube is made by disposing a number of strips in partial overlapping relationship securing them together throughout their length, and shaping them into a tube with the edges of each strip substantially in abutting relationship and the edges of one strip spaced circumferentially from the edges of the other strip. The strips may be of steel, copper, brass &c. and are sealed by a metal or alloy, preferably of lower melting point than the strips. The strips 1, 3 may be drawn from reels 2, 4 in partially overlapping relationship through a pair of driven compressing rolls 10, 11, then through spot welding rolls 15, 16, then through sectioning rolls 21 and finally, in order to melt the sealing metal, through a furnace 23, which may contain a reducing atmosphere such as hydrogen and is followed by a cooler 24 or through an electric heater. The tube may be cut into lengths before passing through the furnace. The sealing metal in wire or strip form 5 is supplied from a reel and is flattened by the rolls 10, 11 into a bulge 12 formed in the outer strip 3, and the strips on each side of the sealing metal are then spot welded at 17 by the rolls 15, 16, which are corrected either through a transformer to an alternating current circuit which may or may not contain a circuit breaker, or may be arranged in a direct current circuit containing a make and break switch. The bulge in the outer ply flattens out when the tension caused by the bending of the composite strip is relieved on melting of the sealing metal. One joint may be a butt joint and the other a scarped joint which may have interfitted edges 32, 33 as shown in Fig. 12. The strips may be overlapped as shown in Fig. 9 and provided with a pair of bulges either or beth of which may contain sealing metal. The spot welding is effected near the edges of the strips, the outer weld serving to prevent the underlapped edge from spreading.
Patent GB-1431348-A (GB)
Title: Magnetic transducer structures
IPC: G11B5/31
Filed: 1973-07-03
Abstract: 1431348 Magnetic transducers COMPAGNIE INTERNATIONALE POUR L'INFORMATIQUE 3 July 1973 [3 July 1972] 31607/73 Heading G5R A magnetic transducer comprises interleaved conducting and insulating helices built up from stacked layers 2, 5, 7, 9 and 3, 4, 6 respectively on a dielectric substrate 10 and forming an insulated winding passing between magnetic layers 11, 12. The transducer is built up by vacuum deposition of successive magnetic (Fe/ Ni alloy), conducting (copper) and insulating (silica) layers through apertures (1); (2, 5, 7, 8, 9); (3, 4, 6) of a mask (50), Fig. 3 (not shown), in a sequence starting with the first magnetic layer 11 and continuing with conducting and insulating layers, the former partially overlapping to form a rectangular winding, the latter defining a central window so that the final, magnetic layer 12 may connect to the first magnetic layer 11. The assembly is abraded at 56 to form an air-gap between the layers 11, 12. Reference has been directed by the Comptroller to Specification 1,331,437.
Patent GB-483344-A (GB)
Title: Improvements in or relating to metal cutting and like machine tools
IPC: B23D37/04
Filed: 1936-11-19
Abstract: 483,344. Broaching - attachments. LAPOINTE MACHINE TOOL CO., Ltd. (Bonnafe, O. W.) Nov. 19, 1936, No. 31711. [Class 83 (iii)] A metal-cutting or like machine tool having a hydraulic or mechanical ram a has a broaching-attachment consisting of a slide c having ways m guided in a secondary table i secured to the main platen g, the lower end e of the slide being adapted to carry a broach h which may thus be pulled downwards through work mounted over an aperture j in the table i.
Patent GB-905336-A (GB)
Title: Improvements relating to fire-control instruments and servo systems
IPC: G05D3/14
Filed: 1959-09-17
Abstract: 905,336. Electric correspondence control systems. BOFORS A.B. Sept. 17, 1959 [Oct. 3, 1958], No. 31720/59. Class 40 (1). [Also in Group XXI] In a gun or rocket launcher control system including a fire-control instrument and one or more servo-systems controlled by the firecontrol instrument and controlling the setting of the gun or rocket launcher, a time delay is introduced into at least one of the servosystems to enable the use of simpler components. The time delay may be obtained by suitable dimensioning of the elements of the servosystem, i.e. motor 10, amplifier 9, tachometer 27 and gear train 25, 26 or, where the fire-control instrument 2 includes a digital computer and a sampling servo-system is used, by utilizing a maintenance circuit in series between the firecontrol instrument 2 and the differential unit 8. In another method a filter network is inserted in the error signal channel of the servo-system. These various methods may be combined. In the figure 12 is a bevel gear meshing with a gear arc controlling the elevation of a gun and 29 is a position indicating synchro.
Patent GB-774920-A (GB)
Title: Improvements in the production of pure benzene carboxylic acids
IPC: C07C51/487
Filed: 1954-11-03
Abstract: Benzene carboxylic acids are prepared by subjecting the mixtures obtained by first treating the corresponding alkyl benzenes at elevated temperature with oxygen or oxygen-containing gases, if desired in the presence of oxygen transferrers, until no further oxygen is absorbed and then treating with nitric acid at elevated temperatures and if desired under increased pressure, to a treatment in an aqueous alkaline medium with a hypochlorite.  Alkyl benzenes specified are toluene, xylene, ethylbenzene, diethylbenzene, di-isopropylbenzene and cymene. After the nitric acid oxidation, the nitric acid is separated and the mixture containing carboxylic acids is dissolved or suspended in 1 to 10 per cent aqueous alkaline liquor and heated to 40-85 DEG  C. with the calculated amount of hypochlorite.  The reaction mixture is acidified to recover the carboxylic acid.  The hypochlorite treatment may also be conducted by leading chlorine into the alkaline solution or suspension of the mixture containing carboxylic acids at 50 DEG  to 80 DEG  C.  In an example, crude terephthalic obtained by the catalytic oxidation of p-di-isopropylbenzene with air in the presence of cobalt naphthenate followed by oxidation with nitric acid, is dissolved in aqueous caustic soda, treated with bleaching powder liquor and heated to reaction temperature, the solution then being acidified at boiling point to yield terephthalic acid.
Patent GB-1079779-A (GB)
Title: High-power compressed-gas electric circuit interrupter
IPC: H01H33/12
Filed: 1965-07-26
Abstract: 1,079,779. Gas-blast switches. WESTING- HOUSE ELECTRIC CORPORATION. July 26, 1965 [Aug. 24, 1964], No. 31813/65. Heading H2B. A gas-blast circuit-interrupting unit comprises a metal chamber 43 having an apertured end wall 42, a tubular nozzle exhaust 73 and a surrounding stationary contact 74 both secured to the end wall 42, an insulating gas-flow guide 70 forming an extension of the metal chamber, and a tubular venting movable contact 19 movable completely through the insulating member. Compressed gas is supplied to the chamber 43 through a bifurcated gas inlet 110 and exhausts in opposite directions through the contact 19 and through the nozzle 73 and a lateral vent 121. A resistor (not shown) may be connected between an auxiliary contact 95 and the stationary contact 74. The Specification describes a three-pole circuit-breaker having three pairs of the above units housed in an earthed metal tank, the moving contacts 19 of each pair being carried by a conducting crossbar. The -units are carried by bushing insulators and a common high-pressure gas reservoir extends along the top of the tank between the insulators. A common hydraulic, pneumatic or electromagnetic operating mechanism moves the cross-bars and opens the inlet blast valves supplying each pair of interrupting units. The mechanical connection to each blast-valve includes a ratchet and pawl so that the valve is opened should the circuit-breaker trip open before the moving contacts have completed their closing movement.
Patent GB-681859-A (GB)
Title: Improvements in propeller spinners
IPC: B64C11/14
Filed: 1949-12-12
Abstract: 681,859. Propeller spinners. DE HAVILLAND AIRCRAFT CO., Ltd., and RUSSELL, D. B. Dec. 12, 1950. [Dec. 12, 1949] No. 31862/49. Drawings to Specification. Class 114. A spinner is moulded from laminations of glass cloth or fibreglass bonded with synthetic resin, and has a series of inwardly directed longitudinal webs formed with holes to receive locating pins. These holes may be formed by preformed inserts which are moulded into the spinner.
Patent GB-485587-A (GB)
Title: Improvements in or relating to the electrolytic production of sodium and other lightmetals
IPC: C25C7/02
Filed: 1936-11-20
Abstract: 485,587. Cells for the electrolysis of fused electrolytes. DU PONT DE NEMOURS & CO., E. I. Nov. 20, 1936, No. 31872. Convention date, Nov. 20, 1936. Addition to 433,633. Drawings to Specification. [Class 41] In a cell for the electrolysis of fused salt mixtures comprising a central anode and an annular cathode pierced by a number of uniformly distributed openings as described in the parent Specification the distance between the electrodes is made not more than about 1À5 inches and to render such an arrangement workable the total area of the openings is made not less than 3À5 per cent and preferably about 4-8 per cent of the inner surface of the cathode.
Patent GB-866437-A (GB)
Title: Improvements in or relating to microscopes
IPC: G02B21/08
Filed: 1956-10-19
Abstract: 866,437. Microscope condensers. COOKE TROUGHTON & SIMMS Ltd., and PAYNE. B. O. Oct. 21,1957 [Oct. 19, 1956], No. 31931/56, Class 97(1) A condensing lens system for a microscope is capable of producing bright field illumination, phase contrast illumination, or dark ground illumination and includes a catoptric element, a first surface of which is disposable adjacent the microscope slide whilst one or more further surfaces is or are disposed adjacent a dioptric element, and means for relatively displacing said elements between a bright field and phase contrast illumination position in which light incident on the dioptric element is refracted so as to be incident on the catoptric element as a convergent cone which passes therethrough without reflection, and a dark ground illumination position in which an annular light beam incident on the dioptric element is refracted so as to be incident on the catoptric element as a hollow divergent cone which is internally reflected within the catoptric element to emerge therefrom as a hollow convergent cone of apical angle substantially greater than that of the first mentioned convergent cone. As shown, the catoptric element 1 comprises an annular reflecting surface 10 supporting a cover glass 9, a spherically curved reflecting surface 11 and a spherical surface 12, whereas the dioptric element 2 consists of lens components 3, 4 and 5. The element 2 is mounted in a sleeve 7 having an external rack 17 engaged by a pinion 18 on a spindle which is carried by and projects outside a sleeve 8 to which is clamped a bracket 14 supporting the element 1. Thus, by rotating pinion 18, element 1 can be moved axially relatively to the element 2 to the_ positions giving the desired kind of illumination. The sleeve 7 is connected to an arrangement 22 which includes a rotatable disc 23 having five apertures therein, in four of which are seated rings 37 carrying annular diaphragms of different dimensions. The rings are held in these apertures by resilient tongues provided on an aperture plate secured to the disc 23. A detent device is provided to define the positions in which a selected diaphragm or the unoccupied aperture in disc 23 will be disposed below the element 2.
Patent GB-520303-A (GB)
Title: Improvements in or relating to electric power systems
IPC: H02P9/00
Filed: 1938-11-04
Abstract: 520,303. Systems for transmitting mechanical power. WESTINGHOUSE ELECTRIC & MANUFACTURING CO. Nov. 4, 1938, No. 31950. Convention date, Nov. 6, 1937. [Class 38 (iv)] An electric ship propulsion system comprises a prime mover, e.g., an internal combustion engine 11, generator 13, synchronous induction motor 15, and speed control means whereby the motor can be caused to operate at varying speeds either as an induction motor or as a synchronous motor. Upon rotation of a controller 29 anti-clockwise, the energization of field 37 of the generator is increased, thereby increasing the speed of the motor 15 operating as an induction machine. When the controller arm contacts with segments 95, 96 the field 37 is over excited and the motor field 25 is energized so as to cause the motor to pull into synchronism. Thereafter the motor operates synchronously and further increase of speed is obtained by opening the throttle 59 through electromagnets 63 .. 69 energized over contacts 71 .. 77. As the speed is increased both generator and motor fields are strengthened so as to maintain stability of operation.
Patent GB-612426-A (GB)
Title: Improvements in or relating to electric circuits for deriving the rate of change of amplitude of a modulated alternating electric quantity
IPC: G05D3/14
Filed: 1945-11-27
Abstract: 612,426. Automatic control systems. SPERRY GYROSCOPE CO., Inc. Nov. 27, 1945, No. 32007. Convention date, Dec. 30, 1941. Drawings to Specification. [Class 38 (iv)] [Also in Group XL (b)] Speed.-In a servo-mechanism, automatic control circuit or follow-up device, in which the magnitude of an error is represented by the amplitude of a low-frequency current and its sense by the phase of the current, and in which the course of the error is anticipated by the combination of one or more time-derivatives with the main error signal, the envelope of the signal is differentiated by means of an impedance network which may include negative reactances.
Patent GB-1509899-A (GB)
Title: Scaffolding constructions
IPC: E04G7/30
Filed: 1974-07-19
Abstract: 1509899 Scaffolding KWIKFORM Ltd 14 July 1975 [19 July 1974] 32014/74 Heading E1S In scaffolding consisting of superposed uprights 12, 22 provided at intervals along their lengths with groups of sockets 14 for connection to cross members (transoms and ledgers), adjacent superposed uprights may be relatively inclined by means of joints 23, each comprising two pivotally-connected elements. preferably spigots or sockets, for connection to ends of respective uprights, the scaffolding having ties 25 for fastening to an adjacent structure, e.g. a ship's hull as shown. Preferably a pair of joints 23 are mounted on the ends of a cross member 24 which also carries a tie 25. In order to support staging horizontally between inclined uprights 22, transoms 27 have pivotally-mounted socket-engaging connectors 28 at their ends, as have staging brackets 29 suspended by chains. Guard railings (Fig. 8, not shown) have posts adapted to seat on ledgers of the scaffolding and also carrying socket-engaging connectors.
Patent GB-963413-A (GB)
Title: Railway vehicle coupler
IPC: B61G3/16
Filed: 1962-08-21
Abstract: 963,413. Railway vehicle automatic couplers. NATIONAL CASTINGS CO. Aug. 21, 1962 [Sept. 5, 1961], No. 32061/62. Heading B7T. A fixed jaw coupler comprises a pulling jaw horn 20 which increases horizontal gathering on the pulling jaw side and is provided with a horizontal surface 22 adapted to underly the horn 23 of a mating coupler. The horn 20 is canted inwardly to avoid interfering with train pipe connections normally mounted beneath the coupler, and a surface 30 on the buffing jaw may ride up the horn sloping surface 24 during vertical gathering.
Patent GB-659583-A (GB)
Title: Feeding mechanism for sewing machines
IPC: D05B27/02
Filed: 1949-12-14
Abstract: 659,583. Sewing-machines. FAIRWEATHER, W. C. (Singer Manufacturing Co.). Dec. 14, 1949, No. 32071. [Class 112] A feed-dog 30, is driven from a rotary shaft 26, by a feedadvance rock-shaft 62, and teedlift rock-shafts 42, 43. The shaft 43 is oscillated by an. arm 46 connected to an eccentric 48 on the shaft 26 by a pitman 47. The shaft 42 is rocked from the shaft 43 by means of an inclined link 52. The shaft 62 is oscillated by an arm 65 connected to an adjustable eccentric 67 on the shaft 26 by a pitman 66. A rotary loop-taker mounted on a shaft 23 is driven by an internal gear 25 and pinion 24 from the shaft 26. The work arm 15 is of elliptical cross-section and has an end plate 68 carrying a lug 70 for restraining rotation of the bobbin-case and pintles 40, 50, 63 for the rock shafts.
Patent GB-224112-A (GB)
Title: Improvements in or relating to buffers and draw-gear for railway and other rolling stock
IPC: B61G9/04
Filed: 1923-12-22
Abstract: 224,112. Sheffield, G. H. Dec. 22, 1923. Combined buffer and draw-gear; draw-gear.- A buffer or draw-gear or combined buffing and draw-gear has the coupler or buffer shank rigidly connected to a spring-controlled member combined with means to enable the rigid member thus formed to move laterally without affecting the position of the springs and follower plates. In the form shown the central coupling shank is rigidly secured to a pair of links d supported by across frame and adapted to embrace a pair of blocks f, g. The blocks f, g are slidable longitudinally of the vehicle and are provided with central depressions f<1>, g<1> adapted to receive respectively the rounded end of the shank a and a wearing member k carried by the links. Springs h, i are arranged between the blocks f, g on each side of the axis or a central spring or springs may be used. When the device is under tension the shank is freed to swing about the recess g<1> and when under compression about the recess f<1>. The bar a may be in the form of a continuous member connecting two vehicles or may be hinged to a corresponding bar on the other vehicle. In a modification the bar a is continuous and is provided with members adapted to engage the blocks f, g.