baber/WOPTO huggingface dataset:
Patent GB-760608-A (GB)
Title: Improvements in or relating to arrangements for circuit-closing and circuit-opening for use in direct-current supply systems
IPC: H01H47/00
Filed: 1954-02-10
Abstract: 760,608. Railway signalling systems. PINTSCH BAMAG AKT.-GES. Feb. 10, 1954, No. 3951/54. Class 105. [Also in Group XXXV] In an arrangement for controlling a relay e in dependence on the state of an "on-off" switching element a connected in series with the input terminals of a " passive " network across a high - voltage D.C. supply, the operating coil of the relay is connected to the output terminals of the network which includes at least one reactive impedance and is such that a change in state of the element results in at least a temporary change in the state of the relay and that any direct current path from the supply to the relay is of such high resistance that it does not by itself carry sufficient current to operate the relay. In Fig. 1 the network is constituted by a transformer b, d, the charging current of which when the switch a is closed, produces a current pulse in the secondary winding d to operate the relay e. Alternatively or additionally the relay e may be arranged to respond to the voltage produced in the transformer secondary winding by the A.C. component, e.g. commutator ripple, of the supply. The flow of steady direct current through the primary winding b after the switch a has been closed may be reduced by providing a capacitor with parallel and series connected resistors in series with the primary winding b, Fig. 2 (not shown), and the resulting circuit may be tuned to the ripple frequency. The output of the secondary winding may be rectified and used to charge a capacitor to which the relay is connected, Fig. 4 (not shown). In a further arrangement, Fig. 5 (not shown), the coil of the relay is connected in series with the secondary winding d and an opposing secondary winding of a further normally energized transformer, the relay e being de-energized when the switch a is closed. Figs. 6 and 7 (not shown) illustrate the use of tapped impedances in place of the transformer. The switching element a may comprise the pantograph of an electric train which cooperates with an overhead current-carrying conductor and a parallel short length of conductor connected to the " passive " network. Alternatively, the element may comprise collector shoes and a conductor rail.
Patent GB-450885-A (GB)
Title: Improvements relating to arc-suppressing arrangements for alternating current electric switches
IPC: H02M1/22
Filed: 1935-02-07
Abstract: 450,885. Arc-rupturing in switches. ANDERSON, J., 137, Aldridge Road, Perry Barr, Birmingham. Feb. 7, 1935, No. 3954. [Class 38 (v)] An arrangement for suppressing arcing in A.C. switches comprises a motor g rotating synchronously with the current and driving a commutator f having a slip ring a and two half-rings b, c interconnected at d, e. The ring a is connected by means of a brush m to the movable switch member j, and the members b, c are connected to the fixed contacts h, i through brushes k, l, the arrangement being such that the trailing ends of b, c are under the brushes at current-zero of the cycle. In operation, suppose that when j separates from h, i, the segment b is under the brush k, then an arc is only formed between i, j. At the first zero, the commutator circuit shunting the break h, j is broken arclessly at b, k, and the arc between i, j is put out by the short-circuiting thereof by the segment c coming under the brush l. A similar action occurs if the arc is formed between h, j. For polyphase working, the above arrangement is repeated for the various contacts. A more perfect break can be obtained by providing short segments b<1>, c<1> connected by rectifiers n, o to the segments b, c which are shortened slightly at the trailing end so that at current zero, the brushes bridge both segments. The rectifiers prevent current flowing from the additional segment to the brush.
Patent GB-705776-A (GB)
Title: Improvements in valves
IPC: F16K39/02
Filed: 1952-02-15
Abstract: 705,776. Valves. AIR REDUCTION CO., Inc. Feb. 15, 1952 [March 6, 1951], No. 4100/52. Class 135 A valve, suitable for controlling flow in either direction through ports 49, 50, comprises a closure member 59 co-operating with a seat 44 which is held by the lower end of a screwed cap 42 against a shoulder projecting into the valve chamber, each face of the closure member is provided with a guide extension 53, 54 to the end faces of which the fluid does not have access, and the closure member has a fluid exposed surface on each side of the seat. Leakage of fluid along the extensions is prevented by sealing rings 56, and fluid flows between the valve chamber and the port 49 through ports 48 in the lower end of cap 42. The valve loading spring 52 is positionec between the seat 44 anc a shoulder formed on extension 54. The latter extension screws on to a spigot projecting downwardly from the closure member, and a sealing ring 55 is interposed between them. In a modification, port 49 is formed in the top of cap 42, and the fluid flows through longitudinal bores surrounding the cylinder in the cap in which the extension 53 slides.
Patent GB-1433291-A (GB)
Title: Method of manufacturing a colour picture tube
IPC: H01J9/14
Filed: 1974-01-29
Abstract: 1433291 Etching HITACHI LTD 29 Jan 1974 [13 April 1973 (2)] 4105/74 Heading B6J [Also in Division H1] In a method of manufacture of a colour television tube in which apertures are etched in a shadow mask, which is then used in the manufacture of the phosphor screen of the tube whereafter the apertures are enlarged by further etching (see Division H1), the walls of the initial apertures are provided, by a photographic technique (not described), with a photoresist material 4 which extends up to the required final aperture size on each surface of the mask and the remainder of the surfaces are coated with an etch resistant material 5 which may be C, CBr, CBr 2 , CBr 3 , or CW. The photoresist material is then removed and the apertures enlarged to their final size by etching e.g. with ferric chloride, Fig. 2d.
Patent GB-1243592-A (GB)
Title: Signal translating system
IPC: H03D3/14
Filed: 1969-01-24
Abstract: 1,243,592. Frequency discriminators. RCA CORPORATION. 24 Jan., 1969 [24 Jan., 1968], No. 4122/69 Heading H3A. In a ratio discriminator, one diode 160 is connected via a first resistor 164 to a first reference potential, and the other diode 162 is connected via a second resistor 166 to a second reference potential so as to forward bias the two diodes. The two reference potentials are developed from a pair of transistors 170, 172 and a Zener diode 177 which are so interconnected that the first potential is higher, and the second potential lower than that at point 180.
Patent GB-361732-A (GB)
Filed: 1931-02-10
Abstract: Emulsifying agents are obtained by treating ricinenic acid, its glyceride or amide at 80-100 DEG  C. with salts of sulphurous acid. Instead of starting from pure materials, the product obtained by splitting off water from castor oil may be used directly or after saponification.  In an example, ricinenic acid is dissolved in hot water by the addition of caustic soda, and the sulphonation effected by means of sodium bisulphite.  Ricinenic acid amide may be similarly sulphonated.  The Specification as open to inspection under Sect. 91 (3) (a) comprises also the treatment with sulphurous acid or salts thereof of any fatty acid containing more than eight carbon atoms, or derivatives thereof, containing conjugated double bonds.  The sulphonation of elaeostearic acid is mentioned.  This subject-matter does not appear in the Specification as accepted.ALSO:Wetting and emulsifying agents are obtained by treating ricinenic acid, its glyceride or amide at 80-100 DEG  C. with salts of sulphurous acid. Instead of starting from pure materials, the product obtained by splitting off water from castor oil may be used, directly or after saponification.  To facilitate the sulphonation, the reacting materials may be emulsified.  In an example, ricinenic acid is dissolved in hot water by the addition of caustic soda, and the sulphonation effected by means of sodium bisulphite.  Ricinenic acid amide may be similarly sulphonated.  Ricinenic acid amide is obtained by passing ammonia into the acid, and heating the resulting ammonium salt to remove water.  The Specification as open to inspection under Sect. 91 (3)(a) comprises also the treatment with sulphurous acid or salts thereof, of any fatty acid containing more than eight carbon atoms, or derivatives thereof, containing conjugated double bonds. The sulphonation of elaeostearic acid is mentioned.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1010641-A (GB)
Title: Balancing machine for static and dynamic balancing of rotors
Inventor: MCLACHLAN KENNETH ROY
IPC: G01M1/12
Filed: 1963-02-01
Abstract: 1,010,641. Measuring rotor unbalance. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Feb. 3,1964 [Feb. 1,1963], No. 4210/63. Heading G1N. A rotor suspended in gas bearings and rotated by gas pressure has its unbalance magnitude and angular positions determined by a capacitor probe, whose output signal is gated by a square pulse reference signal. As shown (Fig. 1), a rotor R is supported in two hydrostatic gas bearings 1, 2, the gas being supplied under pressure through a pipe 4, and passing through a series of holes 5 to impinge on the rotor at an angle, causing it to rotate. Vibrations due to unbalance are sensed by capacitor probe 7. One end face of the rotor is divided diametrically into black and white areas A1, A2 (Fig. 3) which, through a lamp 9 and photodiode 12, provides a square pulse reference signal, which is amplified at 8 and fed to a gate G together with the measuring signal from probe 7. The output from gate G is taken to a meter M. The lamp and photodiode combination are rotated until the reading on meter M is zero, thus defining the angular position of the unbalance, and then rotated through a further 90 degrees, when the reading on meter M indicates the magnitude of the unbalance. More embodiment (Fig. 5), two photo diodes D1,D2 located 90 degrees apart and associated with individual gates G1, G2, determine the phase and magnitude of the components of the unbalance in the four quadrants defined by pulses produced by differentiating the two square wave reference signals, the appropriate components being selected by further gates G3-G5 and fed through a control unit 15 to an erosion device 14 which fires once, or twice, per revolution of the rotor to remove material at a balancing flange until the unbalance reaches a predetermined minimum values.
Patent GB-980169-A (GB)
Title: Improvements in and relating to gas detecting apparatus
Inventor: PALMER THOMAS HENRY
IPC: G01N27/16
Filed: 1960-02-05
Abstract: 980,169. Measuring gas concentration electrically. ENGLISH ELECTRIC CO. Ltd. Feb. 1, 1961 [Feb. 5, 1960], No. 4242/60. Heading G1N. Apparatus for measuring the concentration of methane in an atmosphere comprises a platinum wire resistor 11 (Fig. 1) whose surface is activated by the application of finely divided particles of platinum so that methane automatically burns on contact with its surface to heat the wire, the resulting change in resistance being measured in abridge 10, and used to operate an alarm lamp 25 at a predetermined value. The resistor 11 is enclosed in a thick-walled porous ceramic tube 21 (Fig. 2) with metal end caps 22, and the rate of gas diffusion through the walls may be controlled by shields (not shown) or by painting part of the tube surface. The wire may be located inside a porous sintered metal tube, and may alternatively be made of palladrium, or of a normal resistance material indirectly heated by a methane-sensitive heated wire. Bridge resistor 12 is similar to resistor 11 but without the activated portion, to provide automatic compensation for variations in ambient temperature.
Patent GB-489918-A (GB)
Title: Improvements in or relating to cooling towers
IPC: F28C1/00
Filed: 1938-02-11
Abstract: 489,918. Cooling towers. DAVENPORT ENGINEERING CO., Ltd., and GILL, F. E. Feb. 11, 1938, Nos. 4274 and 5832. [Class 29] Air inlets through the upper part of the wall of cooling-towers are normally closed each by an associated one-way valve which opens only when the external pressure exceeds the internal sufficiently to operate it, so that in windy weather valves on the windward side tend to open and on the lee side to remain closed. The inlet apertures may include short inclined pipes 3 to the lower part of which a flap valve 5 is hinged and is normally closed by means of a counterweight 6. Or the flap may be pivoted at the upper part of the pipe the inner end of which slopes slightly so that the weight of the flap tends to hold it against the opening.
Patent GB-1099597-A (GB)
Title: Improvements in or relating to machines for finishing knitted garments
Inventor: MOORE PATRICK JOHN
IPC: D06F73/00
Filed: 1966-02-01
Abstract: 1,099,597. Finishing garments. ISAAC BRAITHWAITE & SON ENGINEERS Ltd. Jan. 27, 1967 [Feb. 1, 1966], No. 4357/66. Heading D1A. [Also in Division F4] In a garment steaming and drying machine different sizes and shapes of frames which take different articles may be fitted to an adjustable frame carrier over an extension of the steam and air duct, which carrier comprises two slotted pressure plates 2, 3 between which slide pairs of adjustable clamps 4, 5 to hold the garment firmer. The plate 2 is fixed and the plate 3 is urged against it by springs 10. The clamp plates 5 have studs 6 which slide in slots in the fixed plate 2 and the clamp plates 4 have studs 6 which slide in slots in the spring urged plate 3. The former comprises a flat plate covered by a fabric bag, held on by draw cords, through which bag steam and dry air is passed from below.
Patent GB-549108-A (GB)
Title: Improved crank pin assembly
IPC: F16C11/02
Filed: 1941-04-01
Abstract: 549,108. Securing crank-pins to cranks. LE GRAND, SUTCLIFF & GELL, Ltd., and MATHESON, N. April 1. 1941, No. 4366. [Class 80 (ii)] A crank pin a is secured to a crank by the engagement of coned faces a<SP>1</SP> on the pin and d<SP>1</SP> on a divided or split ring d slidable on a reduced part a<SP>2</SP> of the pin with oppositely coned parts of a bore b in the crank through which the reduced patt a<SP>2</SP> of the pin a loosely passes. The tightening is effected by a nut screwed on the reduced part a<SP>2</SP>. Relative rotation of the pin a and crank is also prevented by a key e engaging these parts. The angle of the coned faces is such that binding is avoided to permit easy dismantling.
Patent GB-311456-A (GB)
Title: Improvements in steam condensers
IPC: F28B1/02
Filed: 1928-02-13
Abstract: 311,456. English -Electric Co., Ltd., and Mather, J. W. Feb. 13, 1928. Surface condensers.-In a multi-flow steam .condenser having steam and air lanes substantially in the direction of flow of the steam, the division plates in the water boxes being arranged in line with the lanes, the lanes 1, 2, 3 are of substantially U-shaped formation, each. arm of the U forming a separate lane. An additional steam lane 12 may be formed in the upper part of the central tube bank 9. In a condenser of the three-flow type additional lanes are provided in the side tube banks 7, 8 and adjacent the outlet 29 for the condensate. Baffles 30 may be provided in the lanes.
Patent GB-902692-A (GB)
Title: Improvements in or relating to nitrofurantoin salts
IPC: C07D407/12
Filed: 1960-02-10
Abstract: The invention comprises the sodium and potassium salts of N-(5-nitro-2-furfurylidene)-1-aminohydantoin, and solvated adducts thereof, and the preparation thereof by treating the parent organic compound with sodium or potassium hydroxide or alkoxide in an inert liquid medium, followed, if desired, by heating to remove solvent from the product.  The invention also comprises chemotherapeutic compositions (for parenteral administration) comprising solutions of the salts in physiologically acceptable solvents (e.g. sterile distilled water, p  isotonic sodium chloride solution, 5% dextrose solution or sodium lactate solution).
Patent GB-349018-A (GB)
Title: Improvements in locomotives
IPC: B61C9/08
Filed: 1930-02-12
Abstract: 349,018. Internal-combustion engine locomotives. DYRENKOV, N. I., 108, Ul. Krasnoge, Odessa, Russia. Feb. 12, 1930, No. 4800. [Class 79 (i).] An internal-combustion engine locomotive is provided with one or more main engines 12 directly connected to the track wheels and with an auxiliary engine 13 connected to the wheels through disconnectible gearing. The auxiliary engine is used at starting and also for manoeuvring and for assisting the main engines when required. The engines may be supplied with producer gas or with light or heavy liquid fuel. In the construction shown in Figs. 1 and 2 the main engine 12 is reversible and drives the wheels through a connecting rod 7, and the auxiliary engine 13 drives through a clutch 14, and reversible gearing 16. A gas producer 17 supplies gas to the engines through scrubbers 21 and tar-removers or cleaners 24 which serve also as storage chambers for the gas. The engines are water-cooled, main and auxiliary radiators 28, 35 being provided. A steam generator 25 is heated by the exhaust gases of the engines, these gases passing to the generator through a pipe 26. The boiler may also be fired by ordinary fuel. Hot water for the boiler is taken from the engine water-jackets before it enters the radiator, its place being taken by cold water from a tank 29. The boiler supplies steam for auxiliary engines driving an air compressor 30 for brake purposes, an electric generator 32 for lighting, starting, &c., an electric starting motor 33 for starting the auxiliary propulsion engine 13, a motor 34 for the cooling fan of the radiator 35, and a motor for driving a blower 36 included in the intake manifold of the engine 13 being provided. A similar blower 37 for the main engine can be driven through a clutch by the steam engine or turbine 31 driving the electric generator 32. Modifications are described in which (1) the locomotive is in two parts articulated together, a main engine driving each part while one part has also an auxiliary propelling engine, (2) two main engines are provided driving the same set of coupled wheels, and (3) the main and auxiliary engines are of the Diesel type without compressors.
Patent GB-525127-A (GB)
Title: Radio transmitters
IPC: H03C1/06
Filed: 1939-02-14
Abstract: 525,127. Wireless transmitting systems. STANDARD TELEPHONES & CABLES, Ltd. Feb. 14, 1939, No. 4835. Convention date, April 13, 1938. [Class 40 (v)] To reduce distortion in a radio transmitter two reverse feedback paths are provided, one extending from the output circuit of the modulator or modulating amplifier to the signal input circuit and the other from the output circuit of the complete transmitter through a linear detector to the signal input circuit. The phase shift of the inner feedback may be maintained at a low value for a range of signal frequencies, the phase shift of the combined feedback being thereby reduced and a substantial increase in the overall loop feedback is made possible without resulting instability. Speech current source S supplies signal voltage through the differential bridge 11 to the three stage amplifier 12, 13, 14. Carrier from K is applied to the push-pull pair of valves 16, 17 whose anode voltage is modulated by valve 14 and choke 20. The modulated carrier is amplified in the push-pull stage 22, 23, and is fed to the transmission line 33, 34. Full wave rectification of the modulated carrier wave is effected by diodes 41, 42 and the detected signal is fed to the input of the signal amplifier through an adjustable potentiometer 47 and the balanced differential bridge 11 to provide the overall feedback. The external feedback path extends from a tap in resistance 48 in the cathode lead of valve 14, through blocking condenser 49 to the cathode of tube 12 and cathode lead resistance 50. The overall feedback path and the signal input are conjugate due to the bridge connection 11 and the high input impedance of valve 12 effectively separates the two feedback paths. Complete conjugacy of the two feedback paths may be obtained by means of a double bridge input circuit, Fig. 1A (not shown). In the case of a transmitter employing a grid modulator, Fig. 2 (not shown), the internal feedback voltage is derived from a common cathode resistance in'the pair of valves which are driven in push-pull as regards carrier and in phase as regards signal. Two signal amplifiers only are used prior to the modulated stage in this case to produce the correct number of phase reversals.
Patent GB-1371103-A (GB)
Title: Vertical mixers
IPC: B01F15/02
Filed: 1972-02-17
Abstract: 1371103 Screw conveyers; hoppers E H BENTALL & CO Ltd 17 Feb 1972 [17 Feb 1971] 4864/71 Headings B8A and B8S [Also in Division B1] A mixing apparatus for granular material comprises a vertical screw mixer 2 having a loading aperture 6 with flanges 8, 10, 12, a feed hopper 18, Fig. 3, and a horizontal screw conveyer (see Fig. 4, not shown). Both hopper and conveyer having flanges 24, 26, (34), which are slidable on to those of the mixer. Locking pins may be inserted in holes 28.
Patent GB-137164-A (GB)
Title: Improvements in ventilators (metal) as used in military and civilian helmets
IPC: A42C5/04
Filed: 1919-02-27
Abstract: 137,164. Allum, A. E. Feb. 27, 1919. Ventilating. - A ventilator for helmets is formed of two parts, namely (1) a barrel h having a lower flange a for attachment to the interior of the top of the helmet, air ports b at its upper and outer end, and an internally-screwed boss c connected to the tube by metal strips d, and (2) a domed cover e having four slots f and a central screwed shank g to engage the boss c.
Patent GB-537571-A (GB)
Title: Improvements in bearings for colliery tubs and like light railway vehicles for use in mines and like places
IPC: B61F15/00
Filed: 1940-03-20
Abstract: 537,571. Axle-boxes. MORRIS, Ltd.,. R., and MAXWELL, N. R. March 20, 1940, No. 5207. [Class 12 (i)] A roller-bearing axle-box for colliery tubs and the like comprises a split bearing b and a split housing c, d secured to the base-plate g by a strap f entering recesses in the sides and base of the housing, the walls of the recesses being shaped or rounded as h, i to permit a limited rocking movement between the strap and the housing The parts c, d of the housing are secured together by four corner bolts j. The housing receives the load from the base-plate through either a rounded part of the housing or a rubber buffer e. Specification 431,056 is referred to.
Patent GB-878227-A (GB)
Title: Apparatus for supplying a uniform mixture of solid and fluid materials or throughputs to pipes of a pipe system
IPC: B01F5/00
Filed: 1958-02-19
Abstract: 878,227. Continuous-discharge mixing apparatus. INSTITUT DE RECHERCHES DE LA SIDERURGIE, and SOC. GRENOBLOISE D'ETUDES & D'APPLICATIONS HYDRAULIQUES. Feb. 19, 1958 [Feb. 25, 1957], No. 5324/58. Class 86 Solid and fluid materials passing through a horizontal pipe 10 enter, tangentially, a cyclone 11 to be uniformally mixed therein as they approach the apex of the cyclone,. whereafter they pass through a convergent and divergent vertical pipe 13. Theterminal cross-section of the pipe 13 is substantially the same as that of a vertical pipe fed thereby and the convergence issubstantially greater than the divergence. The apparatus may be applied to the treatment of liquid cast iron with a pulverulent substance to remove sulphur from the cast iron.