baber/WOPTO huggingface dataset:
Patent GB-351211-A (GB)
Title: Improvements in or relating to shearing machines
IPC: B23D25/12
Filed: 1930-05-30
Abstract: 351,211. Shearing; rolling. SCHLOEMANN AKT.-GES., 13, Steinstrasse, D³sseldorf, Germany. May 30, 1930, No. 16809. Convention date, Aug. 10, 1929. [Class 83 (iv).] In shears for cutting into lengths moving roller material, cutters 1 are mounted on shafts 2 coupled by gearing 4 and driven by synchronized electro motors 3. The movement of the cutters is initiated and stopped automatically by the roller material by contact of the end of the material with a switch for each separate cut. The circuit is shown in Fig. 3. A three phase generator 11 is driven from the rolling apparatus and supplies current to the induction motors 3 with squirrel-cage rotors on the cutter shafts. With heavy loads the generator is controlled by a switch 13 through a small exciting continuous current supplied from a dynamo 15 or from the mains. To bring the cutters to the at-rest position after a cut a switch 12 is closed to supply a direct current braking arrangement in known manner when the three-phase current from the generator is interrupted.
Patent GB-1262763-A (GB)
Title: Improvements in and relating to synchronous timer motors
IPC: G04C15/00
Filed: 1969-04-01
Abstract: 1,262,763. Electric motors. GENERAL TIME CORP. 1 April, 1969 [5 April, 1968], No. 17046/69. Heading H2A. In a synchronous motor comprising an A.C. winding 31 associated with a stator core 1 which is split to form an air gap in which a rotor is mounted, the rotor comprises two axially spaced toothed discs 11, 12, separated by an axially magnetized permanent magnet 10, Fig. 3A (not shown), the stator core and rotor discs being made of an iron alloy containing at least 40% nickel by weight. The stator pole faces are toothed, the angular spacing of the stator teeth 40, 41 being equal to that of the rotor teeth (16), 17. The teeth on the two rotor discs are staggered. The magnet is made of barium ferrite. The stator core and rotor discs are laminated, the iron alloy preferably containing silicon or molybdenum, and having a permeability greater than 20,000, a saturation density greater than 10,000 Gauss, a hysteresis loss below 500 ergs/c c./cycle, and a resistivity greater than 60 Á# cm.
Patent GB-356181-A (GB)
Title: Improvements in or relating to protective arrangements for electrical apparatus
IPC: H02H3/28
Filed: 1930-06-02
Abstract: 356,181. Protective cut-out arrangements. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and WILSON, W., of General Electric Co., Witton, Birmingham. June 2, 1930, No. 17055. [Class 38 (v).] A protective arrangement comprises two separate circuits adapted respectively to carry currents at different parts of the apparatus to be protected, and a relay including a plurality of coils connected in the two circuits in such a way that those coils in one circuit are in series with one another, and so arranged that the currents in different coils, acting oppositely normally fail to effect operation of the relay. The relay is arranged to operate on reversal of current at one part relatively to that of another, or on a disturbance of ratio of currents in those parts and in a direction depending on which circuit carries a current of too large a relative ratio. A double-fulcrum beam relay has coils 9, 11 in series with a current transformer 12, and a coil 10 in series with a current transformer 13, the transformers 12, 13 being similar as regards cores and secondaries but having their primaries proportioned to produce equal secondary currents. The turns in the coil 9 equal the combined turns of coils 10, 11, which are normally additive, so that the relay is inoperative, and the ratio of turns of coils 10, 11 is preferably 4: 1. When the degree of unbalance between the currents on either side of the transformer or other apparatus 1 (or in the adjacent ends of a pair of parallel feeders) reaches a predetermined amount, or when reversal of current direction occurs, the beam of the relay tilts one way or the other to cut out the apparatus. An induction relay as described in Specification 319,292, [Class 38 (v), Electric switches &c.], may replace that shown, and the relay coils may be connected across shunts in a D.C. circuit. The compensating impedance may be omitted by opposing the effects of coils 10, 11 and giving them a turn ratio 2: 1, or alternatively each plunger may be acted on by two coils, one in each current transformer circuit.
Patent GB-1299929-A (GB)
Title: A bladed rotor for a gas turbine engine
Inventor: HONEY ALFRED JOHN
IPC: F01D5/22
Filed: 1970-04-10
Abstract: 1299929 Blade shrouding DEFENCE, SECRETARY OF STATE FOR 19 April 1971 [10 April 1970] 17153/70 Heading FIT A gas turbine rotor comprises a ring of blades 13 attached to a hub or shaft (not shown) and rotatable about the axis of the hub or shaft, the tips of the blades being connected to a shroud ring 14 by a resilient material deformable in shear to cater for differential expansion between the blades and the shroud ring. Blocks 17 of resilient material (natural or artificial rubber) covered by glass semiforced plastics sheets 18 and 19 are mounted between tip mounting pads 15, 16 and a sheet metal spat 20, attached to the shroud ring 14 by a locating pin 21. Each pin has a shear neck at 23 which will break under large stress e.g. due to bird strikes. The spats 20 are additionally connected to the blades by pins (not shown) which pass through oversize holes in the blade tips to retain the spats if the resilient connection fails. The shroud ring 14 may be formed from carbon fibres in resin.
Patent GB-152399-A (GB)
Title: Improvements in or relating to the production of chrome iron or chrome steel alloys
IPC: C21C7/00
Filed: 1919-07-09
Abstract: 152,399. Ballantine, W. B. July 9, 1919. Thermo-aluminic and like mixtures and metalextracting processes. - A process for obtaining chromium from chromic oxide or a mineral such as chromite, for the production of chrome-iron or chrome-steel alloys comprises the thermoreduction of the oxide of chromium with calcium carbide in the presence of an alkaline earth oxide, with or without the presence also in the mixture of one or more other reducing-agents such as. calcium silicide or aluminium. The alkalineearth oxide is preferably present in proportion at least equal molecularly to that of the calcium carbide. The reaction may be carried out within molten steel and the mixture may be enclosed in thin sheet iron cases to be immersed in themolten steel.
Patent GB-582760-A (GB)
Title: Improvements in and relating to impedance transformer systems
IPC: H01P5/02
Filed: 1943-10-20
Abstract: 582,760. Impedance transforming devices. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 20, 1943, No. 17310. Convention date, Oct. 24, 1942. [Classes 40 (iii) and 40 (v)] An impedance transformer 35 comprising a series of #/4 sections of coaxial cable of alternately high and low characteristic impedance one section preferably being adjustable in length to compensate for errors in the lengths of the others is employed in a system in which a radio pulse is periodically generated at 30 and sent from an antenna 34, the reflected pulse being received by the same antenna and detected at 31, a diode tube 38 being connected through the impedance transformer to a point #/4 from the connection to the antenna along the line connected to the device 31. When the sender is operative, the high sending voltage brings the device 38 to a comparatively low impedance condition. Owing to the effect of the device 35 this is equivalent to the connection of a shunt of much lower impedance at the point 36 and consequently a high impedance is presented at 37 to the transmitted pulses which thus cannot reach the device 31.
Patent GB-373446-A (GB)
Title: Improvements in or relating to machines for capping carbon rods or like articles
IPC: H01M50/564
Filed: 1931-06-15
Abstract: 373,446. Ratchet gearing. SIERING, P., 6, Cadinerstrasse, Berlin. June 15, 1931, No. 17330. [Class 80 (iii).] In a machine for applying caps to carbon rods and like articles, a ratchet mechanism consists of a wedge-shaped block 24 on an oscillating driving lever 21, a ball 23, and a grooved driven disc 22, a ball-stop 25 being affixed to a spring 26 on the lever 21.
Patent GB-1471441-A (GB)
Title: Electric welding tool and method
IPC: B23K11/00
Filed: 1974-04-19
Abstract: 1471441 Welding by pressure BAYERISCHE MOTOREN WERKE AG 19 April 1974 [21 April 1973] 17345/74 Heading B3R In a method of welding a first sheet metal part, cable clip 1, to a second sheet metal part 2 by an electric arc pressure welding technique using a capacitor discharge current source, the first part is placed in a holder, welding current from the source is supplied through the holder and first part to the welding point, as shown pip or projection (21), and the first part is then pressed against the second part by means of a non- current-carrying member engaging the first part. Apparatus for carrying out the method may comprise a complete tool (not shown), or an attachment for a conventional welding tool, Figs. 1 and 2 in which the holder 4 (14) has spring-loaded reversible and replaceable clamping plates 16, 17 and is electrically and mechanically connected via carrier 10 to coupling momber 6 which can be screwed on to a welding gun electrode. Connected also to a member 6 via an insulating member 7 is a pressure-applying head 8 which may have a bore 23 for removing spatter. Other modifications of conventional welding tools are described: the tip of the electrode may be covered with an electrically non-conducting cap or be replaced by a tip insulated from the electrode shaft.
Patent GB-570635-A (GB)
Title: Improvements in or relating to reinforced concrete structures
IPC: E04B1/20
Filed: 1943-10-21
Abstract: 570,635. Concrete building frameworks. SPENCER, T. Oct. 21, 1943, No. 17377. [Class 20 (iv)] A reinforced concrete framed structure comprises a plurality of frame members each comprising two or more parallel reinforced concrete units spaced apart, and a connecting member or distance member arranged between each pair of units at each end and secured to them, each connecting member also extending between and being secured to the units of another frame member to which the first member is joined. Fig. 1 shows the framing for the wall of a two-storey building, the framing comprising corner columns 14, intermediate main columns 15, intermediate columns 17, floor stretchers 22, intermediate beams 18, and main beams 16, which between them enclose door openings 19, window openings 20, and spaces 21 to be filled in to complete the wall. The main columns'and beams each comprises two or more frames of coplanar groups of units, and some of the members consist of groups of units arranged end to end. Thus, as shown in Fig. 4, the corner column 14, adjacent the beams 16, includes four lower and four upper units 23 which are interconnected by two connecting members 40. Two of the units 23 are shorter than the other two by the widtfi of a unit and on the shorter two rest the two lower units 35 of the beam 16 on one side of the building. These units 35 and the longer units 23 provide supports for the units 38 of the beam 16 on the other face of the building. The units 35 are spaced from one another by distance pieces 36 and by connecting members 37, the latter extending into the column. Spacing members 39, 41, are provided as shown between the units 38 and 23 respectively. The joint between the column and upper main beams is similar except that the members 40 do not extend above the beams. The main beams 16 are connected to the intermediate columns 17 by connecting members 55 as shown. The Specification also describes and illustrates modified forms of joints for connecting the various columns with the main and intermediate beams and for connecting the floor stretches with the columns. The roof of the building comprises pairs of reinforced concrete beams 60, Fig. 8, arranged on opposite sides of a connecting member 50 of columns 15 and resting on the beams 17. Each member of the roof truss is also composed of pairs of units arranged side by side, the members being connected together by gusset plates 62, 64, 65 and 68 located between the units.
Patent GB-530021-A (GB)
Title: Improvements in and relating to fluorescent materials
IPC: C09K11/77
Filed: 1939-06-14
Abstract: 530,021. Luminescent materials. BRITISH THOMSON-HOUSTON CO., Ltd. June 14, 1939, No. 17409. Convention date, June 17, 1938. [Class 39 (i)] Fluorescent materials, for use in lamps such as those described in Specification 457,486 or other purposes, are composed of an oxygen compound of calcium with molybdenum and tungsten, activated by samarium and lead. As an example 20 parts of calcium oxide and 79 parts of tungstic oxide are mixed with about 0.5 per cent of samarium as oxide and 1.0 per cent of lead as acetate and the whole fired in air for about four hours at 1000‹C. The samarium may be replaced by lanthanum or erbium.
Patent GB-530030-A (GB)
Title: Improvements in or relating to small electric motors
IPC: H02K5/14
Filed: 1939-06-14
Abstract: 530,030. Brush-holders for dynamo-electric machines. ELECTROLUX, Ltd. (Aktiebolaget Elektrolux). June 14, 1939, No. 17437. [Class 35] In a brush-holder made of insulating material for small motors and of the type in which a cover closes the outer end of the sleeve part through which the brush is spring-pressed, one side wall of the sleeve has a longitudinal recess or slot forming a passage for the flexible lead to the brush as the brush moves inwards during use. The interior of the sleeve may be rectangular and of T-shaped cross-section. In the form shown, the brush 14 occupies a channel 23 and the recess 18 enables the lead 19 to move freely without fouling the spring 17. The channel walls are of moulded insulating material. The screws 22, which secure the holder to the machine, also retain the cover 16 of the holder in position and the shape of the projecting cover is such that it lies within the general outer contour of the machine to protect it from damage. In an alternative form, a flattened cover is used and is secured in place by a single screw.
Patent GB-340965-A (GB)
Title: Improvements in automatic lighters
IPC: F23Q2/08
Filed: 1929-06-07
Abstract: 340,965. Frictional pocket igniters. HERMANN, (nÚe MEZIVARD), E., 55, Rue de Prony, Paris. June 7, 1929, No. 17504. Convention date, Feb. 8. Void [Published under Sect. 91 of the Acts.] [Class 75 (iii).] In an automatic lighter, a metallic member 3 carrying a stock 4 supporting the mechanical part of the lighter and also serving as a flint tube, and a metal casing 1 forming the reservoir are held together by clamping plates 8, 9. A member 12 mounted on the stock 4 is provided with parallel cheeks 13, 14 having bayonet-like slots 16 extending to their centre in which a spindle 15 is detachably mounted. The spindle 15 passes through the centre portion of a hood device 17, 20, 21 and also carries a loosely mounted friction wheel 18 actuated, on the opening of the hood, by a flat spring 19 secured within the hood. A flat spring 22 secured to the bottom of the member 12 serves to keep the spindle 15 at end of the slots 16 and also to keep the hood pressed on to the wick carrier 2. In operation, the end 20 of the hood is pressed downwards against the action of the spring 22, uncovering the wick and also causing the surface of the friction wheel to move over the flint 7. On releasing the end 20 the hood closes and extinguishes the flame. In one modification the friction wheel may be integral with a rachet wheel actuated by a pawl. In a further modification the hoodcarrying member 12 may be directly attached to the member 3 by means of a screw.
Patent GB-273744-A (GB)
Title: Improved process for the separation in the anhydrous state of fatty acids contained in dilute aqueous solutions
IPC: C07C51/46
Filed: 1927-07-01
Abstract: 273,744. Soc. Anon. des Distilleries des Deux-SÚvres. July 1, 1926, [Convention date]. Acetic, propionic, butyric and other fatty acids. -Anhydrous fatty acids or mixtures of such acids are obtained by extracting their aqueous solutions with an acetic acid ester or mixtures of such esters and then distilling the extract to separate first an aqueous ester, then the rest of the ester, and finally the anhydrous acid. The aqueous ester condensate separates into two layers, the ester being returned to the still. The esters mentioned are ethyl, propyl, and butyl acetates. Examples describe, the treatment of a 10 per cent solution of acetic acid with ethyl acetate, and a 5 per cent solution of butyric acid with butyl acetate. Specification 215,716, [Class 32, Distilling &c.], is referred to.
Patent GB-356728-A (GB)
Title: Improvements in the production of halogen-anthraquinones
IPC: C07C46/10
Filed: 1930-06-06
Abstract: Mixtures of halogenated anthraquinones, free from other substituents, containing a - and b -isomerides, are separated by fractional dilution of the solution in sulphuric acid, oleum or chlorsulphonic acid.  The mixtures treated may be obtained by ring-closure of halogenated 2-benzoylbenzoic acids in sulphuric acid &c., the separation being effected without previous isolation.  In examples (1) the mixed monochlorbenzoylbenzoic acids obtained by mononitrating phthalic anhydride, replacing the nitro group by chlorine and condensing with benzene, is heated with oleum to effect ring-closure; 2-chloranthraquinone is precipitated from the solution by addition of water and filtered off, and 1-chloranthraquinone is obtained by further dilution of the acid filtrates, (2) a mixture of 4 : 5-and 3 : 4-dichlor-2-benzoylbenzoic acids, obtained from the technical mixture of dichlorphthalic anhydrides made by mononitrating 4-chlorphthalic anhydride and replacing the nitro group by chlorine, is dissolved in sulphuric acid or oleum, heated to effect ring-closure, and separated into 2 : 3- and 1 : 2-dichloranthraquinones by dilution with water, and (3) mixtures of 4 : 5- and 3 : 6-, and 3 : 4 and 3 : 6-dichlor-2-benzoylbenzoic acids are similarly ring-closed and separated into the corresponding anthraquinones.  Specification 264,916, [Class 2 (iii), Dyes &c.], is referred to.
Patent GB-581609-A (GB)
Title: Improvements in or relating to polyphase electric-motor protective equipment
IPC: H02H3/353
Filed: 1944-09-14
Abstract: 581,609. Protective cut-out systems. IGRANIC ELECTRIC CO., Ltd., and TAYLOR, J. R. Sept. 14, 1944, No. 17590. [Class 38 (v)] A system for protecting a three-phase motor against single-phase operation and reverse phase-rotation, has connected between pairs of supply lines RY and YB, identical bridge circuits, comprising condensers c1, c2 (or inductances), and tapped resistances r1, r2, respectively, in series therewith, the tapping points p1, p2 of the two resistances being connected through a relay Vw which operates under fault conditions to prevent or interrupt, at contacts Vc, energization of the motor contactor Cw. Vector diagrams, Figs. 2, 3 (not shown) show how, by suitable choice of the quantities, the potentials of p1, p2 can both be made to lie normally at the centroid of the line-voltage triangle so that the relay Vw is inoperative. A resistance in series with an A.C. relay winding swamps its inductance; if the relay is a rectifierfed, D.C. one, its temperature - effects are swamped by the resistance.
Patent GB-736692-A (GB)
Title: Improvements in or relating to electric accumulator electrodes
IPC: H01M10/52
Filed: 1952-07-11
Abstract: 736,692. Batteries. ACCUMULATORENFABRIK AKT.-GES. July 11, 1952 [July 26, 1951], No. 17617/52. Class 53. A sealed alkaline accumulator is provided with a hydrogen-absorbing positive electrode consisting of or containing silver or a compound of silver, for example the oxide, which projects into the hydrogen-charged gas space. The silver may be in powder form and mixed with nickel flakes or nickel hydroxide, or metal parts of the accumulator may be coated with silver or a silver compound and electrically connected with the positive electrode.
Patent GB-934491-A (GB)
Title: Improvements in, or relating to, prime movers
IPC: H02K7/065
Filed: 1958-06-03
Abstract: 934,491. Weight power-storing apparatus. J. IRWIN. Sept. 3, 1959 [June 3, 1958; July 15, 1958; March 19, 1959], Nos. 17624/58, 22591/58 and 9650/59. Class 10. In a weight-assisted motor a rotor 1, Fig. 1, comprising a ported bush 2, ducts 9 ... 12 accommodating slidable weights 13 and an annular duct 4 in communication with the outer ends of the ducts is rotatably mounted on a fixed axle or stator 3 formed with longitudinal pressure fluid supply and exhaust ducts 14, 16 having radial branches 15, 17 for fluid flow to or from the ducts 9. . . 12 as the associated ports 5... 8 in the bush 2 align therewith during rotor movement. During this movement the weights are successively forced and retracted to and from the outer ends of their associated ducts such that their turning moments about the rotor axis are alternately increased and decreased. In the duct positions shown in Fig. 1, pressure fluid through duct 14, branch 15 and port 5 forces the weight 13 in the duct 9 outwardly to increase its turning moment whilst the moment of the weight at the end of the duct 10 is simultaneously decreased through its retraction caused through the connection of the inner end of the duct 10 with the exhaust duct 16. In a further embodiment the weights 13 are of dumb-bell shape whilst in yet another construction the branches 15, 17 are flared and the ducts 14, 16 open to the ports 5 . . . 8 in the vertical plane through the rotor axis. In another modification each weight 26, Fig. 4, is moved outwardly in a duct 27 ... 30 as top dead-centre position is reached by fluid pressure acting on a piston 13 slidable within a duct 21 . . . 24 and the weight is retracted at bottom dead-centre by connection between the piston duct and the stator exhaust duct 16. This construction is modified in a further embodiment by opening each duct 27. . . 30 to atmosphere and locating a compression spring between the outer end of each weight 26 and an apertured housing in which the spring is located. In the rotor of Fig. 6, radial ducts housing weights 13 are joined in diametrical pairs 34, 35 and 36, 37 when in the vertical position by a stator bore 40 inward weight movement being effected in the bottom dead-centre position by pressure fluid passing from the supply duct 14 to the outer end of the lowest duct through an associated duct 38, outward weight movement arising through centrifugal action as the outer end of the radial duet connects to the exhaust duct 16 via an associated duct 39. A prime mover in which the duct 14 is connected to a head of water whilst the duct 16 communicates with a vacuum pump is described in which a series of rotors as in Fig. 6 are rotatably mounted on a common stator, each diametrical duct pair being at a different angular position relative to the others. In another embodiment the weights are moved in radial paths by electric solenoids the necessary contacts being effected by brushes and stator contacts.
Patent GB-345890-A (GB)
Title: Improved manufacture of catalysts
IPC: B01J23/46
Filed: 1930-06-06
Abstract: A catalyst for gas reactions, particularly ammonia oxidation, consists of a continuous coating of rhodium applied to a gauze or like structure of platinum, silver, gold, nickel, or other metal.