baber/WOPTO huggingface dataset:
Patent GB-937654-A (GB)
Title: Improvements in or relating to bladed structures
Inventor: KELLETT ERIC
IPC: F01D5/04
Filed: 1959-03-05
Abstract: 937,654. Centrifugal impellers. BIRMING- HAM SMALL ARMS CO. Ltd. March 1, 1960 [March 5, 1959], No. 7622/59. Class 83 (2). [Also in Group XXVI] A radial flow bladed structure is fabricated from sheet metal and comprises a dished blade supporting disc 1 which has a nose portion 2 and twelve equally spaced radial slots 4. The curved blades 5 each have a flat tongue 6, which is inserted into a slot 4, and also have an edge 7 which fits closely against the outer surface of the disc. A sleeve 9 is mounted in the disc by a spigot 10 which fits an aperture 3. The dished face of the disc is closed by a plate 12 which has an aperture to fit a spigot 13 on the sleeve 9. The tongues 6 enter longitudinal grooves 11 in the sleeve and the whole assembly is secured by welding or brazing.
Patent GB-471925-A (GB)
Title: Improvements in or relating to vacuum cleaners
IPC: A47L9/22
Filed: 1936-03-13
Abstract: 471,925. Vacuum cleaners. ELECTROLUX, Ltd. (Lofgren, G. E.) March 13, 1936, No. 7642. [Class 8 (i)] In a vacuum cleaner the dust collector and motor fan unit are arranged horizontally in a casing comprising a flat or substantially flat base 18 carrying sledge runners 15 and a curved or arched upper portion 19. The runners may extend the whole length of the casing or be provided at certain parts and may comprise ribs 21 pressed out of the casing. Alternatively, the runners may comprise U-shaped members attached by screws to the casing. The end cover 11 is inclined to the vertical and hinged to the base 18. The cross-section of the casing may decrease in size along the length of the casing.
Patent GB-1411858-A (GB)
Title: Alkali metal salts of polyester carboxylic acids
IPC: C07C69/80
Filed: 1973-02-16
Abstract: 1411858 Alkali metal salts of ester acids BAYER AG 16 Feb 1973 [17 Feb 1972] 7694/73 Heading C2C Alkali metal salts of ester carboxylic acids are prepared by neutralizing a free carboxyl group containing ester in the melt with a solution of an alkali metal hydroxide optionally in the presence of an inert solvent which forms an azeotropic mixture with water, the product having a water content of less than 15%. The starting ester acid is preferably the esterification product of a cyclic polycarboxylic acid, e.g. phthalic anhydride, and a polyalcohol, e.g. the ethoxylation products of glycerol, trimethylolethane or trimethylolpropane. Preferred products are the novel alkali metal salts of compounds of Formula I in which x=2, 3 or 4, y= 1,2, 3 or 4 and x+y= 3 to 6, R 1  is a radical of Formula II or III wherein R 3  = H or Me, R 4  = Me or Et and z=O to 6, and R 2  is a divalent organic radical which may contain Cl or Br atoms and/or a COOH group as substituents.
Patent GB-425723-A (GB)
Title: Improvements in and relating to television systems
IPC: H04N3/10
Filed: 1934-03-10
Abstract: 425,723. Television transmitters. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(Communication Patents, Inc. ; 60, Broadway, New York, U.S.A.) March 10, 1934, No. 7716. [Class 40 (iii)] In a television transmitter of the kind in which an arc moves cylindrically round electrodes 6, 7, arranged in a zig-zag 5 as described in Specification 360,941, the picture signal currents are impressed on the transmitting- arc. Variations of the speed of the arc at the receiver due to signal modulation of the arc current are thus reproduced at the transmitter. Conductors 80 connect the final amplifier 25 of the transmitter through an adjustable resistance 81 and a large condenser 82 to the rail electrodes 6, 7. Specification 371,612 also is referred to.
Patent GB-734629-A (GB)
Title: Microwave switching arrangements
IPC: H01B11/20
Filed: 1953-03-20
Abstract: 734,629. Microwave transmission lines. STANDARD TELEPHONES & CABLES, Ltd. March 20, 1953 [April 2, 1952], No. 7827/53. Class 40 (8). A switch for a microwave transmission line of the " line-ground " type described in Specifications 704,050 and 708,601 comprises a movable switch member which includes a short section of one of the conductors. The transmission line of Fig. 1 comprises a narrow " line conductor 1 separated from a relatively wide ground " conductor 2 by a layer of dielectric 3 whose thickness is a small fraction of a quarter wavelength. A section 4 of the line conductor 1 is pivoted at 5 so as to be movable from a closed position to an open position in which it overlies a layer of resistive material 7 which forms a matched termination for the line. In the switch of Fig. 3 four line conductors 8, 9, 10, 11 are carried on a layer of dielectric 3a on the other side of which is carried the " ground " conductor 2a. A conductor segment 14 is carried on a square or circular block of dielectric 13 which is disposed in a recess in the dielectric layer 3a. The block 13 can be positioned so that either of the pairs of conductors 8, 9 or 10, 11 can be connected, the unconnected pair being terminated by blocks of resistive material 15, 16. A similar switch having three terminals is described (Fig. 5, not shown). The switch of Fig. 7 has four terminals 24, 25, 26, 27 which may be connected in pairs by conducting segments 30, 31 mounted on a block of dielectric 28. The block is keyed to the dielectric layer 3c between the lines 24 &c. and. the "ground" conductor 2c. The conductor 47 in the twoway switch of Fig. 13 forms a common ground conductor for the three terminals 42, 43, 44 and has an intermediate section 49 of hollow frustoconical form which merges into a hollow rectangular housing 50. A conical body 45 of dielectric material with a conductive surface 61 fits within the conical section 49 and ensures dielectric continuity between the dielectric layers 48 in the three terminals. The conical element 45 can be rotated to bring a metallic segment 57 into a position in which it connects the line 46 to one or the other of the lines 46a, 46b. The unconnected line is terminated by a resistive body 58 which forms part of the conical element 45.
Patent GB-853963-A (GB)
Title: Improvements in and relating to protecting systems for alternators
Inventor: MATHEWS PAUL
IPC: H02H7/06
Filed: 1956-03-13
Abstract: 853,963. Protective cut-out arrangements. BRITISH THOMSON-HOUSTON CO. Ltd. March 11, 1957 [March 13, 1956], No. 7829/56. Class 38 (5). A protective arrangement for a polyphase alternator 1 comprises a dynamo-electric machine having a stator with windings 5 energized from current transformers 6 so as to provide a rotating flux and a rotor 7 which is driven by a synchronous motor 3 in the same direction as the rotating flux. Hence when the output of the alternator 1 is balanced no voltage appears at slip-rings 9 connected to the rotor windings 8, but in the event of unbalance, the negative sequence components produce a flux rotating in the reverse direction to the rotor 7 so that a voltage appears at the slip-rings 9. This voltage is proportional in magnitude to the magnitude of the negative sequence components and is of a frequency twice that of the alternator. A protective relay 10 is supplied from the sliprings and may be tuned to the double frequency.
Patent GB-1336695-A (GB)
Title: Zinc alloys
IPC: C22C1/02
Filed: 1972-02-21
Abstract: 1336695 Zinc based alloys CENTRE DE RECHERCHES METALLURGIQUES-CENTRUM VOOR RESEARCH IN DE METALLURGIE 21 Feb 1972 [19 Feb 1971] 7839/72 Heading C7A An alloy composition comprises, by wt per cent:- 2À8 to 3À2 copper 0À08 to 0À2 chromium, manganese, nickel lanadium and/or zirconium 0À2 to 0À3 titanium, cobalt, molybdenum, tantalum, vanadium, tungsten, zirconium, nickel and/or manganese 0À01 to 0À03 cadmium, lithium and/or beryllium 0À003 to 0À005 magnesium, lithium and/or beryllium 0À002 to 0À004 aluminium, nickel, silver, indium, silicon, yttrium and/or a lathamide the balance being zinc and impurities e.g. Pb, Sn, or Fe, and no two of the above constituents being provided by the same element. The alloys are prepared by homogenizing all the components except magnesium in the liquid state at 620 to 650‹ C cooling to around 480‹C, incorporating magnesium, if any, re-heating and tapping at 450-550‹C. The cast alloy may be rolled or extruded, optionally wire-drawn and annealed to produce nails, slate hooks and screw-cutting blanks.
Patent GB-1534349-A (GB)
Title: Photographic bis pyrazolone colour coupler compounds
IPC: C09B26/02
Filed: 1976-02-27
Abstract: 1534349 Photgraphic silver halide emulsion containing dimeric magenta coupler KONISHIROKU PHOTO INDUSTRY CO Ltd 27 Feb 1976 [28 Feb 1975] 07913/76 Heading G2C [Also in Division C2]  A photgraphic silver halide emulsion contains a bis-3-anilino-5- pyrazolone magenta coupler obtained by the reaction of a 3-anilino-5- pyrazolone compound and an aldehyde of the Formula:- A-CHO where A is alkyl, aralkyl, cycloalkyl, alkenyl, cycloalkenyl, aralkenyl or heterocylic, or a phenyl which is unsubstituted or substituted only by halogen, alkyl, caboxy, alkoxycarbonyl or carboxymethyl. The aldehyde is preferably benzaldehyde, 2-or-4- chlorobenzaldehyde, 2, 4-dichlorobenzaldehyde, 4-ethoxycarbonylbenzaldehyde, nicotinaldehyde or nicotinaldehyde or butyraldehyde. The coupler has a high colour-forming speed, produces less yellow stain after development and does not adversely affect other ingredients in the material. The magenta dye image produced on exposure and development has excellent stability.
Patent GB-160164-A (GB)
Title: Fluid operated transmission devices
IPC: F16H39/20
Filed: 1921-03-14
Abstract: 160,164. Walter & Berges Maschinenfabrik. March 13, 1920, [Convention date]. Transmitting power.-In apparatus for the transmission of power comprising a radial-cylinder pump delivering liquid or a gaseous medium to a radial-cylinder motor, the cranks are constituted by members 7, 7<1>. one or both of which is capable of being adjustably inclined. The pump crank is adjusted by means of a screwed spindle 9, and the motor crank may be engaged by a changeable member accessible from the exterior. The pistons 20 are provided with plugs 21 adapted to be screwed against the ball heads 18 of connecting- rods 17, bolts 19 passing through the heads. The other ends of the connecting-rods are received in a groove formed in a two-part sleeve 13 mounted on a bush 11 pivotally secured at 12 to a spherical portion of the crank. In order to reduce weight, holes may be bored in the cylinder block, and channels may be formed in its periphery to increase the cooling surface. The valve parts formed in a bearing sleeve 24 are so dimensioned that the crank pressure on the sleeve is approximately balanced by the fluid pressure. Valves 30 which may be operated either by excess or deficient pressure are accessible from the exterior to allow interchange of springs.
Patent GB-1415711-A (GB)
Title: Shock-absorbing material
IPC: B29C67/00
Filed: 1973-02-19
Abstract: 1415711 Shock-absorbing material YOKOHAMA RUBBER CO Ltd 19 Feb 1973 [30 May 1972] 7967/73 Heading C3R A shock-absorbing material consists of a rigid foam of a thermosetting resin having an average cell size of at least 0À6 mm., a rupture strength under compression of between 1 and 15 kg./cm.<SP>2</SP>, an available efficiency of between 70 and 90% and a damping efficiency of between 81 and 97%, the foam disintegrating into substantially particulate matter when impacted with energy in excess of its rupture strength. The foam may be a phenolic, epoxy, urea resin or most preferably a polyurethane foam. In the manufacture of the polyurethane it is generally necessary to employ a polyether polyol of OH number not less than 350. The foams may be used in the motor industry for safety purposes.
Patent GB-163541-A (GB)
Title: Improvements in internal combustion engines
IPC: F02D9/00
Filed: 1920-03-17
Abstract: 163,541. Corbett, J. P. S., Archbold, C. B., and Corbett, J. D. March 17, 1920. Drawings to Specification. Regulating.-In a two-stroke engine wherein the degree of compression and the quality of the charge are maintained constant with varying quantities of charge, the charge is supplied by a pump with a variable stroke, and the travel of the power piston is varied. A scavenging-pump is used to supply air and withdraw products from the power cylinder, the amount withdrawn being varied by a valve. This valve is adjusted simultaneously with the links used to vary the strokes of the pump and power pistons.
Patent GB-211730-A (GB)
Title: Improvements in tanks for making glass sheets
IPC: C03B15/02
Filed: 1923-03-20
Abstract: 211,730. Michotte, H. March 20, 1923. Glass furnaces.-A tank, from which glass sheets are drawn is heated at two sides only. As shown the drawing- tank 1 is connected with the main melting-furnace by a passage 2, and on each side is a heating-chamber 5 supplied with air and gas through ports 6, 7.
Patent GB-1034274-A (GB)
Title: Improvements in or relating to guided wave transmission systems
IPC: H01P1/02
Filed: 1963-02-28
Abstract: 1,034,274. Waveguides. WESTERN ELECTRIC CO. Inc. Feb. 28, 1963 [March 8, 1962], No. 8011/63. Heading H1W. A waveguide elbow comprises an ellipsoidal reflecting surface 15 with foci located at the outer ends of sections 11, 12 designed to transform the wave-front from planar to spherical. The elbow is designed for the transmission of TE 01  circular-electric mode energy between circular waveguides 16, 17 of given radius. In order to prevent generation of TE 02  mode energy, the radius of the guides at the elbow is made greater than the radius of guides 16, 17. The transition sections, shown as hyperbolically tapered, give rise to a spherical wave-front. The geometry of the ellipsoid surface is such that such a wave is reflected from one focus to the other. The lengths of the transitions may be unequal. The eccentricity of the ellipse varies with the angle # of the elbow.
Patent GB-1420124-A (GB)
Title: Method and apparatus for processing acoustic well logging signals
IPC: G01V1/48
Filed: 1973-02-19
Abstract: 1420124 Acoustic well-logging SCHLUMBERGER INLAND SERVICES Inc 19 Feb 1973 [17 Feb 1972] 8014/73 Heading H4D In a well-logging system wherein respective measurements of the transit time of acoustic waves through an earth section are made in successive measurement sequences, the likelihood of logging certain measurements having random errors is reduced by comparing the measurements of two successive sequences and recording the later measurement, only if it differs from the earlier measurement by less than some given amount. For the embodiment described, having one transmitter and one receiver in a downhole probe, a counterpart of the transmitted pulse T 0  is sent uphole together with the amplified reception signal SR. The transit time measurement is started when T 0  crosses a threshold SD 0  in a first gate circuit and is stopped, by halfwave E 2 , when a threshold SD 1  in a second gate circuit is crossed. SD 1  may be selected manually, or controlled automatically such that in any measurement sequence it has a value just above the noise level prevailing in the preceding measurement sequence. If the noise level were abnormally high, the threshold SD 1  would be high and so would not be exceeded by E 2  and the time measurement would be stopped by E 4  instead, resulting in an error corresponding to one period of the acoustic waves. To overcome this, each current time measurement is transferred to a measurement store only if it differs from the preceding (temporarily-stored) measurement by less than, e.g. 2/3#¥ of the wave period. The measurement store contents are recorded as a function of probe depth. The reception signal SR is in a given sequence is used to derive an AGC voltage, which is sent downhole for controlling the gain of the amplifier. This voltage is updated provided that the two time measurements compared differ by less than the stated value. The time measurement and recording apparatus may be analogue or digital. All the time measurements may be recorded prior to the comparison step and in addition to the recording of the measurement store contents. More than one transmitter or receiver may be used in the probe, the time measurement being of the differential transit time between two receivers associated with a given transmitter.
Patent GB-291184-A (GB)
Title: Improvements relating to the amplification of electric currents
IPC: H02M3/18
Filed: 1927-03-24
Abstract: 291,184. Harrison, W., and Wood, T. March 24, 1927. Charging and discharging condcnsers. - An electromagnetic interrupter G in a vacuum chamber C is arranged in parallel with a condenser A so that the discharges of the latter amplify the input current. The current source is connected at M, M<1> and a load at N, N<1>. A condenser Q may also be employed in parallel with the input circuit.
Patent GB-540264-A (GB)
Title: Improvements in and relating to bronzing or gilding machines
IPC: B41G1/00
Filed: 1940-05-06
Abstract: 540,264. Bronzing-machines. CATHARINE, A. May 6, 1940, No. 8109. [Class 100 (ii)] In a bronzing machine, surplus bronze is automatically withdrawn from the bronzing chamber 1 and redelivered to a supplementary bronze applying device adjacent to the normal bronze applying devices. As shown, printed sheets 13 are fed into the bronzing chamber 1 on to an endless conveying blanket 14 which carries the sheets under bronze applying rollers 12 fed from a hopper 17, rubbing in pads 15, and fur or felt covered belts 20 which travel 'transversely to the sheets and sweep surplus bronze into hoppers 7 at the sides of the chamber 1. The hoppers are connected by pipes 5a to the suction side of a fan 6, the delivery side of which is connected by a conduit 5 to a surplus collecting box 4. Within the box 4 and opposite the conduit 5 is a funnel 10 connected by a pipe 11 to a perforated tube 16 extending close to one of the bronze applying rollers 12. Slidable or rotatable tube sections 18 may be arranged on the tube 16 to close certain of the perforations in the tube 16 to vary the positions or extent of the discharge of powder. A fine mesh bag may be arranged on one side or on the top of the box 4 to allow the escape of pressure air therefrom. The belts 20 may be provided as described in Specification 540,282, with a small amount of oil to remove the bronze from the sheets more effectively and for this purpose the belts pass in contact with a pad 24 supplied with oil from drip feed lubricators 25. Powder adhering to the belts is removed by brushes or scrapers and falls into removable canisters 9.
Patent GB-653536-A (GB)
Title: Improvements in or relating to sensitive manometers
Inventor: CARLISLE SAMUEL SKIPTON
IPC: G01L11/00
Filed: 1948-03-19
Abstract: 653,536. Differential - pressure meters. BRITISH IRON & STEEL RESEARCH ASSOCIATION. March 19, 1948, No. 8244. [Class 40 (i)] [Also in Group XL (c)] Force such as differential-pressure of the order of 0.1 inch water gauge, is measured by the energizing current in an electromagnetic force-balancing device, comprising a moving- coil speaker-type unit energized by an amplified signal from a positional-displacementdetector. A manometer head unit, Fig. 1, comprises a gas-tight enclosure formed by two half-casings 4 mounted on a vertical ring 3, and a rigid diaphragm 6 sealed to the ring by an annulus of gold-beaters skin 11, and attached to a rod 7 supported on spring-pillars 13 for axial movement. One end of the rod carries a moving coil 9 co-operating with a pot magnet 10a to produce the balancing force, and the other end carries a soft iron plunger 20 forming the movable element of the detector device comprising an energizing coil 23 and two equal and oppositely connected pick-up coils 21, 22. Pneumatic damping is provided by a perforated disc 18, with adjustable blanking plates 19, mounted close to the diaphragm 6. The working parts are enclosed in silk covers 29 to protect them from dust which may enter the casing through the pressure connections 5. For certain applications where a square law is required, the permanent magnet 10a may be replaced by an energized electromagnet connected in series with the coils (Fig. 3, not shown). The output signal from the coils 21, 22 is fed to a full-wave, grid-controlled, rectifier arrangement (see Group XL (c)), comprising tubes 32, 33 which give D.C. output varying in magnitude and polarity with the detector displacement. This output is fed through an indicator meter 37 to the moving coil unit to .balance the applied force. The Provisional Specification describes a similar pressure head, having some slight differences in constructional detail, e.g. the plunger 20 comprises an ebonite rod wound with "Mumetal" (Registered Trade Mark) tape, and more current is required to operate the balancing coil which is supplied by back-to-back connected thyratrons controlled by the detector signal which is combined with a constant amplitude quadrature voltage to provide a variable phase grid control voltage for the thyratrons, whereby the output contains a controlled D.C. component, Provisional drawing (not shown).
Patent GB-644938-A (GB)
Title: Manufacture of diaryl amines
IPC: C07C209/64
Filed: 1948-03-09
Abstract: Diarylamines are prepared by heating a primary arylamine in liquid form at an elevated temperature and pressure in the presence of a ferric halide or aluminium as a catalyst, e.g. ferric chloride or aluminium chloride, bromide or iodide.  The catalyst may be present in an amount between 0.3 and 8.0 per cent by weight of the arylamine. In the examples, diphenylamine is prepared.  The process may be used for the preparation of ditolylamines and dinaphthylamines.  Other metal halides or ammonium halide may be present as well as the catalyst.
Patent GB-310952-A (GB)
Title: Improvements in apparatus for drawing glass in sheets
IPC: C03B15/18
Filed: 1929-03-14
Abstract: 310,952. Soc. Anon. des Ateliers de Construction et Fonderies de Jeumont Anciens Etablissements T. Haut. May 5, 1928, [Convention date]. Drawing.-Relates to sheet-drawing apparatus of the type in which the sheet is drawn vertically upwards between pairs of opposed rollers, one roller of each pair being mounted in fixed bearings while the other is carried by counterbalanced bell-crank levers. It is stated that if an obstruction, such as a stone 13, Fig. 3, passes between the rollers, the consequent tilting of the movable roller 2 out of parallelism with the fixed roller 1 causes undue friction between the shaft of the roller 2 and its bearings 5, and there is unnecessary resistance to the movement of the roller. The invention consists in journaling the shaft 50 of the movable roller 2 in bushes 18, Fig. 10, which are spherical over the part 51 of their exterior which is in contact with the bearing- blocks 17. The bushes are thus free to roll in the blocks, and the roller 2 can be inclined to its supporting-levers 19. These levers 19 are also mounted on knife edges 20, Fig. 8, secured to the frame of the machine, in order that the roller 2 may offer less resistance to displacement. The roller 2 is usually driven by the roller 1 through gear-wheels 3, 4 having long teeth to allow for the movement of the roller 2. According to the invention, these pinions are dispensed with and the shafts of the roller are connected to a pair of short parallel shafts, either by means of flexible shafts or by means of rods provided with universal joints at each end.