baber/WOPTO huggingface dataset:
Patent GB-1441042-A (GB)
Title: Sets of elements for constructing frameworks
IPC: E04B2/76
Filed: 1974-02-04
Abstract: 1441042 Structural members BATINORM PATENTVERWERTUNGS AG 4 Feb 1974 [6 Feb 1973] 05093/74 Heading E1K [Also in Division F2] A hollow structural tubular support 10 of light metal and having a polygonal or circular cross-section includes thickened portions in which are formed slots undercut to a hexagnonal shape for receiving enlarged head formations 22 on attachment arms 21, the arms 21 also including flanges 23 having apertures 24 to receive screws by which the arms are secured at a selected height along the column where threaded bores (16, Fig. 1, not shown) are provided to receive the screws. The attachment arms 21 (shown in broken lines in Fig. 5) connect metal beams (not shown) to the column, the beams supporting or/and reinforcing a wall composed of outer and inner blocks 50, 51 which are also anchored to the column by attachment arms 53 each having a keying portion 54 and a flange 55 secured by a screw 56 to the column. The wall is completed by a bridging piece 57, on the inside, and insulating layers 58-60 on the outside.
Patent GB-752906-A (GB)
Title: Improvements in means for automatically supplying food to animal feeding troughs andthe like
IPC: A01K5/02
Filed: 1954-02-22
Abstract: 752,906. Animal-feeding devices. McMAS. TER, D. Dec. 24, 1954 [Feb. 22, 1954], No. 5116/54. Class 5 (2). Animal-feeding means comprise a trough 1 with a horizontal guideway extending longitudinally above it, a hopper 5 being supported on the guideway for travel to and fro above the trough, the hopper having a rotary valve 20 in its discharge-mouth 6 operated automatically during the travel of the hopper by studs 23 spaced parallel to the guideway. The studs are mounted on a channel-member 22 above the trough and are removable to vary their spacing. The trough is mounted at the rear of a series of pig-compartments (not shown) and the pigs are prevented from reaching the hopper by rails 3 and a partition 4. The hopper is supported by a trolley 8, 9, 10 moved two and fro by a motor 13 having two cable-drums 12 connected to opposite sides of the trolley, the motor-current being interrupted and reversed by switches 15 operated by spring-loaded fingers 17 on the hopper. Water-supply pipes 25 are mounted along the trough and valves 26 supply water to a spray-pipe 29 beneath the member 22 for moistening the food in the trough, the valves being operated sequentially by members 27 in the path of a rod fixed to the hopper. In large installations, the hopper may be re-charged automatically at the ends of its runs.
Patent GB-1048364-A (GB)
Title: Impeller assembly for a fan or the like
IPC: F04D29/28
Filed: 1965-02-05
Abstract: 1,048,364. Centrifugal and centripetal fans. ROTRON MANUFACTURING CO. Inc. Feb. 5, 1965 [June 26, 1964], No. 5123/65. Heading F1C. [Also in Division E2] An impeller comprises an annular series of vanes fixed, each by one edge, to a carrier member, and an annular member extending around the opposite edges of the vanes, the annular member being held by at least two tabs projecting from the edges of at least two opposite vanes, the tabs fitting in slots in the annular member, and the tabs and slots having angularly related edges in interfering relation co-operating to urge the annular member against the vanes. A centrifugal or centripetal fan impeller formed from plastics material or metal, comprises vanes 46, Fig. 2, integral with a back plate 44. A shroud 52 is formed with slots 56 for engagement by tabs 54 formed on the vanes 46. As shown in Fig. 4, the edge 56a of each slot 56 lies in a plane X-X parallel to the impeller axis, while the edge 54a of each tab 54 lies in a plane Y-Y disposed at an angle to the plane X-X. The edges 54a and 56a have an interference fit whereby the sharp outer corner 56b of edge 56a bites into the edge 54a to retain the shroud 52 in place. Additionally, the ends of the tabs 54 may be heated and caulked over. Impeller vanes may be connected to a back plate in the same way. A cover 18 is pushed into the back plate 44 with its three tabs 20, 21, 22 passing through slots 23, 24, 25. It is then twisted, by inserting a tool into recesses 29, 30, 31, until detents 26, 27, 28 snap into position. The impeller may be of centripetal type.
Patent GB-1360544-A (GB)
Title: Railway vehicle trim control system
IPC: B62D37/06
Filed: 1972-02-03
Abstract: 1360544 Railway control FIAT SpA 3 Feb 1972 [9 Feb 1971] 5168/72 Heading B7N [Also in Divisions G4 and G1] The angular disposition of a railway vehicle abouts its longitudinal axis is controlled by a servosystem in accordance with the linear speed of the vehicle and its twist as measured by a rate gyroscope, when travelling on a curved portion of track. As shown (Fig. 5), the gyroscope is carried in a housing 18 attached to a bridge member 16 on an axle 14, supporting the body of a railway vehicle, and measures the angular velocity of the assembly about the horizontal axis C-C. The signal developed in the gyroscope 30 (Fig. 6) is limited at 32, integrated at 34, with the integral being returned to zero when the input signal is zero, and fed to a threshold device 36 to produce a postive or negative signal each time the threshold value is exceeded, indicating an angular displacement greater than the maximum track camber. This is extended at 38 for a preset short time, to avoid pulsing due to a bad track, and the extended signal is fed to an AND gate 39. The linear velocity of the vehicle is measured by a tachogenerator 52 whose output is modified as required at 52 bis and fed through gate 39, when the latter is opened by the integrated gyro signal, to energize a servomechanism 40 which rotates the vehicle body about its longitudinal axis at a predetermined rate. In a modification (Fig. 8) the extended integrated gyro signal from unit 38 is also fed through a timer 158 to a change over switch 154. If the duration of the gyro signal exceeds a predetermined time interval, switch 154 is operated to energize the servomechanism 40 with a signal proportional to the rate of change of the lateral acceleration of the vehicle, obtained by differentiating at 48 the lateral acceleration measured at 44 and stored at 150.
Patent GB-353861-A (GB)
Title: Two-step sulphatizing roasting process
IPC: C22B1/02
Filed: 1930-02-18
Abstract: In a two-step roasting operation for sulphatizing sulphide ores, for example those of copper, zinc, lead, either containing iron sulphide or to which iron sulphide is added, in the first stage, the ore is moved in countercurrent to the liberated gases, whereby the iron, and other metals in part, are oxidized, but without oxidation of the zinc, if present, and in the second stage, the gases and mineral from the first stage are moved in co-current whereby the ore is sulphatized.  Temperatures of 550 DEG  C. and 600-700 DEG  C. respectively are specified.  In this manner the production of ferrites is avoided, the ferric oxide produced acting as a catalyst for producing sulphur trioxide in the second stage.  Near the end of the operation, raw zinc sulphide may be added to the sulphate calcine to produce zinc oxide.  The necessary air, which may be cold or preheated, is added either totally in the first stage or is supplied to the respective roasts.
Patent GB-471113-A (GB)
Title: Improvements in or relating to induction motors
IPC: H02K17/36
Filed: 1936-02-22
Abstract: 471,113. Induction motors. WALSH, A., and METROPOLITAN - VICKERS ELECTRICAL CO., Ltd. Feb. 22, 1936, No. 5395. [Class 35] In order to produce an effect similar to that resulting from cascade connection of two induction motors, the rotor of squirrel-cage motor is made in two parts co-operating with two stators and the parts of the conductor bars lying within one stator are connected with those lying within the other stator in such order that the currents produced in the bars by the rotating field produced by one stator will produce between the other stator and the part of the rotor therein a field rotating in the opposite direction to the first field. The first part of the stator is supplied with current in the ordinary way, and the second may be short-circuited, either directly or through an adjustable resistance, or may be connected to a phase-advancer or other exciter, or the second stator may be a solid mass of magnetic material. Fig. 2 shows an arrangement of the rotor bars in which the bars 1 ... 8 in one half of the rotor extending over a pole pair pitch are connected in reverse order to the bars 1<1> ... 81 of a corresponding portion of the other part of the rotor. The bars extending over a single pole-pitch may also be similarly connected, so that the two rotating fields are displaced with respect to each other by a pole-pitch. Fig. 4 shows an arrangement in which the bars through a single pole-pitch are reversely connected as above, but one bar in each pole-pitch is in alignment with the bar to which it is connected in the other part of the rotor, thus producing a further displacement of the fields. Fig. 7 shows an arrangement in which the number of slots in one of the rotor parts B is double that in the other part A. The conductor in one of the slots of part A such as the slot 201 divides into two portions passing to two slots 20 of the part B spaced by an amount equal to a pole-pitch of the part A or a pole-pair-pitch of the part B. The connections intercross as shown to produce the effect of reversing the direction of rotation of the field as described.
Patent GB-180299-A (GB)
Title: Improvements in rotors for centrifugal compressors
IPC: F04D29/30
Filed: 1922-02-23
Abstract: 180,299. Akt.-Ges. Brown, Boveri, et Cie. May 14, 1922, [Convention date]. Disc - supported - blade fans; impeller blades. - The rotor of a centrifugal compressor has a plurality of rings of blades b, c, d, arranged concentrically with an annular gap e, f between adjacent rings, of such width as to allow the streams of fluid from each ring to reunite, if eddy wedges are formed in any blade ring, before entering the next blade-ring. The blades of one ring may be in staggered relation to those of the adjacent ring.
Patent GB-469624-A (GB)
Title: Metallic and flexible packings for rotary acting pumps and ships tail shafts
IPC: F16J15/36
Filed: 1936-02-25
Abstract: 469,624. Stuffing - box substitutes. STAAL, G. Feb. 25, 1936, No. 5660. [Class 122 (v)] A packhig for pump or tail shafts comprises a stationary ring G, held in contact with a ring E on the shaft by the difference in pressure between springs K and pressure in a space P, supported by spaced bolts N carrying the springs, and connected to the casing A by a flexible sleeve strengthened by bands J. The bolts are universally jointed to the casing to permit self-alignment of the rings G, E. The springs may act either to press the rings together, Fig. 1, or apart. Fig. 4. A ring F of white metal or lignum metal is carried by ring E and the rubbing faces are lubricated by oil supplied at O.
Patent GB-692893-A (GB)
Title: Improvements in electrical switch control mechanisms
IPC: H01H37/12
Filed: 1951-03-08
Abstract: 692,893. Thermal switches. GENERAL MOTORS CORPORATION. March 8, 1951 [April 6, 1950], No. 5663/51. Addition to 580,287. Class 38 (v) The invention of the parent Specification is modified by providing a screw by which the initial position of the bellows is made adjustable. In one form, Fig. 1, the switch is similar to that of the parent, the bellows 38 being secured to a member 40 which is received within a split nut 44 which is adjustable in a flange 46 in the base of the frame 20. Opening movement of the bellows is limited by the engagement of a lug (not shown) on the follower 34 with a flange on an adjustable screw 82. Excessive increase of temperature causes a lug 84 to raise a plunger 86 to close contacts 92, 125 to short out a signal lamp 129. The tension of spring bar 56 and the centre line of the toggle 52, 54 are adjustable, the former by screwing a sleeve 60 into or out of the side of the frame 20, and the latter by a cam 72 secured to a shaft 62 and co-operating with a lug 74 on the bar 56. The adjustments may be independent of each other or, if the sleeve 60 and shaft 62 are secured together, simultaneous. In a modification, Fig. 5, the cam 72 is replaced by a pinion 272 co-operating with a pinion 271 having an eccentric bore in which is located a pin 253, the head of which serves as a pivot for toggle link 54. The shaft 62, carrying the pinion 272, and the sleeve 60, are separately adjustable. The contacts 92, 125 may be omitted and the screw 82 may have two flanges limiting opening and closing movement of the bellows, as shown. In a further modification, Fig. 9 (not shown), the cam 72 (or its equivalent) is omitted and the shaft 62 serves only to support the knob 64.
Patent GB-470511-A (GB)
Title: Improvements in or relating to containers with lids
IPC: B65D43/16
Filed: 1936-02-26
Abstract: 470,511. Boxes. HUDSON, SCOTT, & SONS, Ltd., and IRVING, J. B. Feb. 26, 1936, No. 5810. [Class 18] The lid d of a box is supported on the upper edge of the body part a by means of a tongue- and -slot connection g in such a manner as to display the inner or outer face of the lid. As shown, the tongue is cut from the peripheral flange of the lid, is bent round the curls f, b on the lid and the upper edge of the body part and then inserted in a slot in the body part, but the tongue can also be pressed inwardly if it is desired to display the inner face of the lid. The positions of the tongue and the slot may be reversed or the tongue can be formed as an extension of the lid flange which need extend only over the neighbourhood of the tongue-and-slot connection, or the flange can be omitted altogether. The slot may be replaced by a dovetail cutaway portion. A plurality of tongues and slots can be provided.
Patent GB-1199058-A (GB)
Title: Apparatus for Filtering Liquids
Inventor: DUFF JOSEPH HOWARD
IPC: B01D24/46
Filed: 1967-07-31
Abstract: 1,199,058. Filter beds. UNION TANK CAR CO. 31 July, 1967 [24 Aug., 1966], No. 5890/ 70. Divided out of 1,199,057. Heading BID. The apparatus is constructed and operates similarly to that described in Specification 1,199,057, except that the vessel 91 and weir 88, downstream of the filter bed, are replaced by an inverted U-tube, similarly connected and performing the same function.
Patent GB-551396-A (GB)
Title: Improvements in liquid pumps
IPC: F04B9/14
Filed: 1942-05-02
Abstract: 551,396. Regulating liquid pumps. PARKER, A. LA R. May 2,1942, No. 5938. [Class 102 (i)] In a fuel or other liquid pump, a relief valve 37 Fig. 2, is arranged between inlet and outlet check valves 76, 82, Fig. 3, and at a pre-determined discharge pressure by-passes liquid back to the inlet valve, the relief valve and the inlet check valves being close to, and communicating with, a suction check valve 23 so as to trap between them a priming of liquid following each operation of the pump. In the form shown, a double-acting piston 10, Fig. 1, is reciprocated in a stainless steel cylinder 9 by a. weighted lever 55 and a rod 12, and is guided by a rod 14 which is flattened at 62. Liquid enters a port 18 and passes through a strainer 20 before reaching the suction check valve 23 which is guided by a stem 24 in a bore 25 with a relief port 29. The relief valve 37 is set by an adjustable head 41 engaging its spring 43, and controls a port 36 between a passage 34, leading to an inlet chamber 31, and a passage 35 leading from an outlet chamber 32 communicating with a discharge port 33. The chambers 31, 32 connect respectively, by ducts 70, 72 and ports 69, 71, with the inlet and outlet check valves 76, 82 which are held in position by keeper plates 85 and lock plates 94.
Patent GB-1090901-A (GB)
Title: Protective relay apparatus
Inventor: HOEL HANS
IPC: H02H1/00
Filed: 1964-02-13
Abstract: 1,090,901. Protective systems. ENGLISH ELECTRIC CO. Ltd. Feb. 12, 1965 [Feb. 13, 1964], No. 6014/64. Heading H2K. A protective relay apparatus, e.g. an amplitude comparator distance protective relay circuit, comprises a first circuit 30 for producing a first voltage dependent on the largest of a plurality of signals, a second circuit 10 for producing a second voltage dependent on the smallest of a different plurality of signals and means 50 for producing an output signal when the first voltage is at least equal in value to the second voltage. The circuit 10 has six input devices each comprising a full-wave rectifier connected to input terminals 20 in series with a resistor 21, a resistor 17, a capacitor 18 and a diode 19. The circuit 30 has identical devices except that the diodes 39 are connected with opposite polarity. The means 50 comprises transistors 51, 52 and a relay 53. Normally the first voltage which is applied to the base of the transistor 51 is less than the voltage at terminals 22, 23 due to the second voltage and the transistor 51 is non-conducting. Thus the voltages at the base and emitter of transistor 52 are the same and the transistor 52 is non- conducting so that relay 53 is not energized. When the second voltage falls below the first voltage, the transistor 51 is rendered conductive so causing transistor 52 to conduct and energize relay 53. When the apparatus is used for distance relay protection, the input signals are derived from the line and phase voltages and currents. The input signals to both the detecting means may be vector quantities (a V-IZ) where V and I are the various voltages and currents of the protected system and Z denotes chosen replica impedance values. The constant a may be zero for the input signals to one of the detecting means.
Patent GB-668592-A (GB)
Title: Process for preparing catalysts and the catalysts so prepared
IPC: B01J37/02
Filed: 1950-03-10
Abstract: In the preparation of catalysts by impregnating a carrier with an aqueous solution containing ammonium tungstate or molybdate and a nickel or cobalt salt, the solution is formed by mixing the salts in the presence of water and an alkanolamine, e.g. mono-, di-, or tri-ethanolamine, as a solubilizing agent.  In an example a solution of nickel or cobalt nitrate is added to a solution of ammonium tungstate or molybdate in 50 per cent aqueous monoethanolamine and the solution is used for impregnating aluminium oxide.  Other suitable carriers are silica gel, bleaching earth, kaolin, magnesium silicate, carbonate, or oxide, and activated alumina.  After impregnation the catalyst is heated to decompose the salts, compressed into pieces, and may then be treated with hydrogen or hydrogen sulphide.  The catalyst is useful in hydrogenation, dehydrogenation, desulphurization, hydroforming, and reforming reactions.  It is stated in the Specification to be known to prepare a catalyst by impregnating silica gel with solutions of zinc nitrate and ammonium tungstate using methylamine as a solubilizing agent.
Patent GB-916876-A (GB)
Title: A method of applying a layer of insulating material to a base and an insulating layer obtained by means of this method
IPC: E04D13/17
Filed: 1961-02-17
Abstract: 916,876. Reinforced concrete roofs. REPPEL, J. J. H. Feb. 17, 1961 [Feb. 17, 1960], No. 6049/61. Class 20 (4). A reinforced concrete roof 1 is provided with a layer 3 of light insulating concrete having ventilating ducts 6, 6<SP>1</SP> and is finished with a hard layer 4 and roofing material 5. The layer 3 is laid in situ without seams by pouring the concrete between guide strips 9 which are removed when the concrete has partly set. Absorbent cardboard or paper channels 7, 7<SP>1</SP> are placed in the gaps thus formed and are covered with similar concrete. The ducts interconnect and are formed peripherally and across the roof. Access to the ducts is provided by tubes 10 in the wall 2.
Patent GB-876202-A (GB)
Title: Improvements in or relating to rotary valves
Inventor: HIRST ARTHUR ALGERNON
IPC: B65G53/46
Filed: 1958-02-25
Abstract: 876,202. Washing granular materials. COAL INDUSTRY (PATENTS) Ltd. Jan. 12, 1959 [Feb. 25, 1958], No. 6077/58. Class 82(2) [Also in Group XXIX] A rotary valve for controlling the supply and exhaust of air to and from a washerbox for coal, comprises a rotor 1, Fig. 2, communicating at its open ends through passages 4 with a port 5 connected to the washer-box and having a port 2 on its cylindrical surface co-operable successively on anti-clockwise rotation of the rotor with first and second inlet ports 10, 11, Fig. 1, connected with a common inlet passage 6 leading to a compressed air source and first and second outlet ports 23, 22 connected with a common exhaust passage leading through a gap 9 to the atmosphere. In order to adjust the admission and exhaust phases in the cyclic operation of the valve in a manner comparable with the adjustment of the arcuate angles of the usual single inlet and outlet ports, the second inlet port and the first exhaust port are fitted with independently operable throttles 12, 24 respectively, co-operable with graduated scales fitted on the outside of the casing 3 to indicate the positions of the throttles. To prevent direct communication between the passages 6 and 7, the arcs subtended by the blind areas 3a, 3b of the casing are at least equal to and preferably slightly greater than the arc subtended by the port 2. To adjust the length of the blind area 3a, plates 26a secured to the casing by a plurality of bolts 27 are provided. A slide 8 adjustable by means of a clamp bolt 8a may be fitted to control the exhaust of air through the gap 9. It is preferable that the length of slide is such that it never completely closes the gap.
Patent GB-850460-A (GB)
Title: Process for the preparation of pentaerythritol
Filed: 1959-02-23
Abstract: Pentaerythritol is formed by reacting together acetaldehyde and formaldehyde, in a molar ratio of 1 to at least 4, in an aqueous medium at 15 DEG -40 DEG  C. in the presence of 1-3 mol equivalents of an alkaline condensation agent per mol of acetaldehyde and of 0,05 to 5%, based on the total weight of the two aldehydes, of a catalyst consisting of an organic peroxide or hydroperoxide, an azo-bis-nitrile or an a -diketone or a mixture thereof.  Preferred catalysts are acetyl-, benzoyl- and acetylbenzoylperoxides; t-butyl-, cumene- and tetrahydronaphthalene-hydroperoxides; 2,21-bis-isobutyronitrile, 2,21-azo-bisdimethylvaleronitrile, 1,11-azo-bis-1-cyclohexane nitrile and 2,3-butanedione. Suitable alkaline condensing agents are, for example, sodium, potassium, calcium or barium hydroxide or mixtures thereof.
Patent GB-474130-A (GB)
Title: Improvements in and relating to railway cars
IPC: B61D17/02
Filed: 1937-03-02
Abstract: 474,130. Railway vehicles. VREEDE, D. March 2, 1937, No. 6233. Convention date, March 20, 1936. [Class 103 (iv)] A separate wheeled car adapted for attachment to the rear carriage of a train to reduce air resistance has its front or forward face 5 formed to match the end wall 6 of the last ordinary carriage 3, while its upper and/or side walls 2 are streamlined rearwardly from the front face. In order to obviate the employment of a turntable to reverse the tail car, the body 2 may be mounted rotatably on the underframe 1 by means of a pivot 4.
Patent GB-686143-A (GB)
Title: Improvements in gear mechanism including intermeshing gear wheels
IPC: F16H57/02
Filed: 1951-03-15
Abstract: 686,143. Toothed gearing. AKTIEBOLAGET LJUNGSTROMS ANGTURBIN. March 15, 1951 [March 20, 1950], No. 6248/51. Class 80 (i). In a gear drive for compensating for possible variations due to temperature or manufacture and particularly for the drive of the rotor of a regenerative heat exchanger a driving pinion 16 engaging with a ring of teeth 26 on the rotor 28 is carried on an arm 20 which is loaded by a spring 24 to maintain the gears in mesh. Guide rings 30, 32 prevent the teeth engaging too deeply.