baber/WOPTO huggingface dataset:
Patent GB-617840-A (GB)
Title: Improvements in or relating to electric rectifying systems having protective arrangements
IPC: H02H7/12
Filed: 1946-10-11
Abstract: 617,840. Rectifying. GENERAL ELECTRIC CO., Ltd., and THOMPSON, W. G. Oct. 11, 1946, No. 30406. [Class 38 (ii)] [Also in Group XXXVII] Mercury arc rectifiers operating in parallel have an A.C. protective circuit which trips a main circuit-breaker should unbalanced loading occur. Three rectifiers 1, 2, 3 are supplied from a common 3/6 phase transformer 4, which has an auxiliary winding (not shown) supplying a star/delta transformer 8. The secondary windings 10 of the latter transformer are connected to choke coils 11, 12, 13 which are wound on closed cores 14, 15, 16 through which the outgoing rectifier leads 17, 18, 19 pass. Connected between the star points 20, 21 are the trip coil 7 of the circuit-breaker 6 and a further choke coil 22 wound on a core 23 and associated with the total-load line 24. The choke coils 11, 12, 13 have equal impedance, while the rectifiers share the load, but unbalance in the load-sharing causes the impedances to differ, the protective circuit becomes unbalanced, and trip coil 7 is energized to trip the circuit-breaker. Choke coil 22 has a high impedance when the rectifiers are lightly loaded and prevents the tripping of the circuitbreaker until the total load current reaches a predetermined value. The Specification refers also to the use of current transformers associated with the A.C. sides of the rectifiers, the outputs of these transformers being so summed that the total is normally zero.
Patent GB-998356-A (GB)
Title: Polymeric anhydrides
Inventor: GOODMAN ISAAC
IPC: C08G67/04
Filed: 1962-08-08
Abstract: The invention comprises polyanhydrides and copolyanhydrides containing repeating units of formula <FORM:0998356/C3/1> In the copolyanhydrides the molecules may contain anhydride residues of other naphthalene dicarboxylic acids, terephthalic acid, isophthalic acid, benzophenone-4 : 41-dicarboxylic acid or an aliphatic dicarboxylic acid.  In an example, naphthalene-2 : 6-dicarboxylic acid is heated with acetic anhydride to obtain the mixed anhydride of naphthalene - 2 : 6 - dicarboxylic acid and acetic acid, and this is heated at reduced pressure to obtain the polymer.  Other methods of preparing the polymers are mentioned. Specifications 840,846 and 840,847 are referred to.
Patent GB-1225002-A (GB)
Title: Merchandise display units
Inventor: LAHR JOACHIM
IPC: A47F7/08
Filed: 1968-06-26
Abstract: 1,225,002. Shoe boxes. J. LAHR. 26 June, 1968, No. 30514/68. Heading B8P. [Also in Division A4] In a shoe display stand one shoe of each pair is displayed on rack 1, Fig. 2, and the other is stored in a marked parallelepiped shoe box 7, Figs. 2, 3, placed in a similarly shaped compartment 5, 6 of an attached storage stand 2.
Patent GB-427565-A (GB)
Title: Developing, fixing and washing machine for photographic roll films
IPC: G03D13/04
Filed: 1934-08-08
Abstract: 427,565. Photographic developing-apparatus. HORNE, S. W. F., 11, Shirley Terrace, Horns Road, and MATTISON, F. W., 89, Ladysmith Avenue, Seven Kings, both in Ilford, Essex. Aug. 8, 1934, No. 30546/33. [Class 98 (ii)] A machine for developing, fixing, or washing photographic roll - films comprises a pair of discs a, a held apart by distance pieces d and a tube b, and supported on a spindle c. The spindle is provided with distance pieces c<1>, and is rotatably mounted in bearings f<2> carried by brackets f which are hinged to the base plate g. The distance pieces d are secured to the discs a, a by bolts e, and nuts e<1>, and are of a length equal to the width of the film. The ends of the film are secured between a flat bar d<1> with upstanding pins d<2> and a clamping bar d<3> controlled by springs d<4>, the film x being supported round the peripheries of the discs by the distance pieces, which engage the unexposed portions between the separate pictures. The dish y containing the developing &c. fluid is placed between the upstanding brackets, with the lower portion of the discs dipping into it, and holes may be formed in the discs to allow the progress of development to be observed. Frames of wire with radial spokes may replace the discs a, a. Specifications 25234/01, 22114/03, [both in Class 98], and 301,986, [Class 98 (ii)], are referred to.
Patent GB-805323-A (GB)
Title: Channel selectors for signal-seeking receivers
IPC: H03J7/30
Filed: 1955-10-26
Abstract: 805,323. Tuning radio receivers. SYLVANIA ELECTRIC PRODUCTS Inc. Oct. 26, 1955 [Oct. 29, 1954], No. 30676/55. Class 40 (5). In a signal-seeking radio receiver one or more tuned circuits are interposed between the local oscillator and mixer to reduce the injected voltage and thus the sensitivity of the receiver except in a narrow band or bands corresponding to desired signals so that tuning will be arrested by these signals only. As shown, each tuned circuit is connected between earth and a pair of small-valued capacitors 40 connected in series between the oscillator and mixer and a switch 44 provides a direct path when required.
Patent GB-1308553-A (GB)
Title: Sling roundness gauge
IPC: G01B5/20
Filed: 1970-06-24
Abstract: 1308553 Roundness gauge BENDIX CORP 24 June 1970 [25 June 1969] 30761/70 Headings G1M and G1N An object 12, Fig. 1 to be tested for roundness whilst still in a lathe is saddled by two stirrup shaped strips or slings 22, 24, of flexible but non-stretchable material, the strips being supported by frames 20, 21, and a handle 19 bearing against a fixed rest 28. Transducers 34, 36 with screw adjustable probes touching the surface of the object send signals depending on the surface variations to an amplifier-summer 46, a meter 50 and a polar chart recorder 54. In Fig. 9 (not shown) a single frame supports two closely spaced slings and a single transducer probes between them instead of thro' holes in the slings. The slings may be of different configurations e.g. of single or double cords, Figs. 6-8 (not shown) and their ends may be held in releasable slidable or pivotable blocks (142), (148), Fig. 5 (not shown) and (66) Figs. 2, 3, (not shown). The slings may wrap around different angles of arc in various embodiments and be coated to reduce friction.
Patent GB-1471676-A (GB)
Title: Universal joints
IPC: F16D3/20
Filed: 1974-07-11
Abstract: 1471676 Universal joints GEOFFREY WHITTINGHAM Ltd 23 May 1975 [11 July 1974 13 Aug 1974] 30766/74 and 35570/74 Heading F2U A universal joint, Fig. 1, comprises a solid of revolution 2 on one member in contact with a cylindrical internal surface 9 of the other, the rotary movement being transmitted by arms 4 engaging recesses 7. The arms may carry rollers 5 and the recesses 7 may be cushioned by a rubber lining or blade springs. The solid of revolution 2 may be spherical and arranged to slide axially within the cylinder. In Fig. 3, three arms 4 are provided and the sphere 2 is centred by a pad 11 and a ring 14 having spherical surfaces 12 and 15; centring could also be achieved by use of Belleville washers or a pin which extends from the sphere to the end plate. A front wheel drive of a car may comprise a double joint, one as shown in Fig. 1 and the other as shown in Fig. 3.
Patent GB-244912-A (GB)
Title: Improvements in boots, shoes and the like
IPC: A43C15/16
Filed: 1924-12-22
Abstract: 244,912. Deschamps, L. Dec. 22, 1924. Studs, detachable.-Interchangeable studs 1, Fig. 1, are detachably mounted on permanent projections 2 extending from thin rigid sole and heel plates preferably of aluminium alloy attachable to the soles and heels' of boots and shoes especially sporting boots such as football boots. The detachable studs are threaded metal members 6, Fig. 4, with indiarubber covers 7 with or without strengthening metal inserts 7a. A conical recess 9 is provided to accommodate a corresponding shoulder 10 on the projection 2. The rubber engages in a dovetailed groove 11 in the stud. The studs have a slot 12 corresponding to a slot 14 in the rubber whereby they are turned by a screwdriver. The rubber covers may be inset in an outer sole and the metal plate secured between inner and outer soles.
Patent GB-1523836-A (GB)
Title: Process for reduction of nicotine content of tobacco by microbial treatment
IPC: A24B15/20
Filed: 1976-07-23
Abstract: 1523836 Treating tobacco BRITISH AMERICAN TOBACCO CO Ltd 23 July 1976 [17 Nov 1975] 30812/76 Heading A2C The nicotine content of tobacco is reduced by inoculating tobacco with a microorganism which degrades nicotine by a mechanism which involves the production of 3-succinoylpyridine. The process conditions are: (a) moisture level of at least 50% by weight based on the total weight of tobacco and water; (b) a temperature between 20‹C and 45‹; and (c) an initial pH between 5 and 8. The micro-organism is selected fro Psendomous pusida (N.R.R.L. B-8062, B-8061) and cellulomona sp (N.R.R.L. B-8063). Specifications 1523835 and 1523837 are referred to.
Patent GB-153300-A (GB)
Title: Improvements in the recording and reproduction of sounds by means of a sound succession relief
IPC: G11B9/00
Filed: 1920-11-01
Abstract: 153,300. Waltz, E., and Meusser, H. Nov. 1, 1919, [Convention date]. Thermionic relays and repeaters.-In a method of reproducing sound by passing a record between the electrodes of a condenser in such a way as to vary its capacity, the variations in capacity of the condenser are impressed as variations of potential on the grid circuit of a valve amplifier. In the arrangement shown in Fig. 14, the reproducing condenser c<1> is placed in a high-frequency circuit and the diagram represents a wheatstone-bridge arrangement in which the grid circuit of a thermionic valve is substituted for the galvanometer branch. The sound is reproduced in a telephone t. The capacity variations of the reproducing condenser c' may be superposed as shown in Fig. 15 on high-frequency currents from a generator q.
Patent GB-189977-A (GB)
Title: An improvement in the manufacture of bricks from the norfolk and other oil shales
IPC: C04B18/12
Filed: 1921-11-18
Abstract: 189,977. Curties, H. Nov. 18, 1921. Materials, special, for bricks.-Relates to the production of bricks from Norfolk and other oil shales, and consists in the introduction into the powdered shale of potassium nitrate, or sodium nitrate, or a mixture of these two substances, with the object of purifying the shale from sulphur and other deleterious substances, and of preventing the formation of " cores."
Patent GB-896571-A (GB)
Title: Improvements in or relating to fuel element arrangements for nuclear reactors
Inventor: ACTON ERIC WILLIAM VICKERS
IPC: G21C3/06
Filed: 1959-09-10
Abstract: 896,571. Fuel elements. GENERAL ELECTRIC CO. Ltd. Sept. 12. 1960 [Sept. 10, 1959], No. 30925/59. Class 39(4). Tubular fuel elements 3 are arranged in line to form a continuous passage. Coolant flows both inside and outside the elements. The sheaths of the elements have external and internal fins 15, 16. Graphite support disks 11, 12 and ceramic spacers 10 are provided. The outer sheath is a magnesium alloy while the inner sheath is a zirconium alloy. One or more lines of elements may be mounted in graphite sleeves of the sort described in Specification 791,011. The proportions of coolant flowing inside and outside the elements may be varied.
Patent GB-280939-A (GB)
Title: Improvements in and relating to the manufacture of catalytic gels
IPC: B01J21/00
Filed: 1927-11-17
Abstract: 280,939. Silica Gel Corporation, (Assignees of Miller, E. B., and Connolly, G. C.). Nov. 19, 1926, [Convention date]. Catalytic agents, preparation of.-A hard porous gel impregnated with a catalyst is obtained by treating a suitable hydrogel with a solution (e.g. of a metallic salt) which yields the catalytic material upon decomposition by heat, removing water from the hydrogel, and heating to decompose the impregnating substance. The gel may consist of silica, alumina, tungstic oxide, stannic oxide, or like substance; it should be .capable of adsorbing at least 10 per cent of its weight of water vapour at 30 C. and 22 mm. partial pressure. The impregnating agent may be a solution of a salt of copper, iron, aluminium, manganese, nickel, silver, platinum, &c. yielding upon decomposition the respective oxide or, by employing reducing conditions, the metal. Specifications 212,034 and 255,904 are referred to.
Patent GB-433250-A (GB)
Title: Improvements in or relating to the mechanical recording of an optically reproducibleoscillation track
IPC: G11B11/00
Filed: 1934-10-29
Abstract: The Specification describes the use of colloidal sols in the preparation of an opaque covering layer in a sound record film, which layer during recording is partly removed.  According to the invention, the light-absorbing substance of the covering layer is formed of a metal or metal compound, the particles of which have colloidal dimensions.  Such a layer enables a sharply defined track to be produced without after-treatment, and may have adequate covering power when it has a thickness of about 2 microns.  During the manufacture of the layer and before application to the carrier, the colloid may be stabilized by a protective colloid, such as gelatine, which may also serve as a binding agent.  Metal sulphides, particularly mercury sulphide, are preferably used as the opaque substances.  For example, an aqueous sol consisting of mercury sulphide, gelatine, and water in stated proportions is applied to a gelatine layer at a temperature of about 40 DEG  C. by means of a roller, and the aggregate is then dried.  To enable the solution to spread during rolling, a wetting agent such as the preparation known as "Alborit" (stated to consist probably of sodium choleinate) is preferably added.  In another example, a colloid solution of "Berlin blue" (ferric-ferrocyanide) in water, with peptone added as a protective colloid and gelatine as a binding agent, is applied to a gelatine or other carrier, e.g. by rolling or by projection.  At a thickness of about three microns, such a layer is stated to be highly absorbent in the red and infra-red as well as in the violet and ultraviolet parts of the spectrum, and is therefore well adapted both for use with a photo-electric cell and for photographic copying.  A third example is described, in which a colloid silver solution in water or aqueous alcohol is used, gelatine and a protective colloid such as "Collargol" (containing colloidal silver and albumen) being added.
Patent GB-1234800-A (GB)
Title: Flexible guide pipe for underwater drilling
Inventor: REYNARD REMI
IPC: E21B7/128
Filed: 1968-06-28
Abstract: 1,234,800. Drilling. INSTUTUT FRANCAIS DU PETROLE DES CARBURANTS ET LUBRIFIANTS. 28 June, 1968 [29 June, 1967], No. 30994/68. Heading E1F. [Also in Division F2] A flexible guide pipe for connecting in underwater drilling the surface installation and the well head and used for conveying the flushing fluid and for passage of the drill bit comprises a coupling at each end, an internal armouring constituted by the helical winding of a metallic strip with the - convolutions interlocking, an external sleeve made of a winding or netting of metallic wires or cables and tightly surrounding the armouring, means to anchor the ends of the sleeve on the couplings, and means to render the pipe fluid tight. The metallic strip may be of S-shaped cross-section with the armouring coated with elastomeric or thermoplastic material to render the pipe fluid tight. Alternatively a helical sealing joint may be used between convolutions. A metal strip may be situated between adjacent convolutions to avoid the jamming of a drill bit. The ends of the sleeve may be formed into eye pieces which are positioned around pulleys on the couplings. Electric wires and/or flexible hydraulic hoses may be embedded in the sleeve to transmit signals, data, or power.
Patent GB-1208149-A (GB)
Title: Cleaning device
Inventor: NYKANEN TARMO
IPC: A47K7/04
Filed: 1968-06-28
Abstract: 1,208,149. Brushes. T. NYKANEN. 28 June, 1968, No. 30997/68. Heading A4K. [Also in Divisions B3 and F2] In a power-driven scrubbing device, two concentric rings of cleaning members, which may be brush bristles, sponge-like bristles, or scraping or grinding means, are connected to a continuously rotating driving shaft by a mechanism which converts the drive into rotary oscillations in opposite directions. In Fig. 2, rings of bristles 11, 12 are oscillated in opposite directions by reciprocating rack frame 26, driven by eccentric 29. In Figs. 6, 7 pinion 35 is axially displaceable along shaft 34 selectively to engage either rack 33 (for oscillatory movement) or gear 31 (for continuous rotation). Pinion 36 meshes with toothed rings 37, 38 on the brush rings 11, 12. Washing liquid is supplied through a pipe in shaft 20. Bevel gear 30 is driven, via a flexible drive and clutch 23, by an electric motor. A gear wheel may alternatively be formed as a turbine, driven by the washing liquid.
Patent GB-990819-A (GB)
Title: Rotary blade assembly for a mowing or like agricultural machine
Inventor: BOESCH JOHN CORDES
IPC: A01D34/73
Filed: 1961-08-29
Abstract: 990,819. Mowing machines. LILLISTON IMPLEMENT CO. Aug. 29, 1961, No. 31100/61. Heading A1F. A mowing machine is characterized by a rotating cutting blade 44 having a cutting edge 45 at the rear of which is attached a weight 47. The blade is hinged at 36 to a centre plate which is rotated through the pulley wheel 16 from the drive shaft 14. The machine is mounted on a frame 11 supported by ground wheels 18 which are attached to a bar 22 which is rotatable by crank and screw 26, 24 with respect to the frame 11 whereby the height of the cutters can be adjusted. The wheel supports 20 may be removed from the shaft 22 and replaced so that they trail the machine.
Patent GB-251321-A (GB)
Title: Improvements in the manufacture and production of thioindigo derivatives
IPC: C09B7/10
Filed: 1924-12-29
Abstract: 251,321. Dodd, H., Sprent, W. C., and United Alkali Co., Ltd. Dec. 29, 1924. Tetrachlorthioindigos are obtained by treating a dichlorbenzene with chlorsulphonic acid, reducing the dichlorbenzenesulphochloride to the dichlorthiophenol, condensing the latter with chloracetic acid in aqueous solution, and finally treating the dichlorthiophenolthioglycollic acid with sulphuric acid to convert it into tetrachlorthioindigo. According to an example, p-dichlorbenzene is the starting material and the reduction of the 2: 5-dichlorbenzenesulphochloride is effected with zinc or iron filings and dilute hydrochloric acid.
Patent GB-817457-A (GB)
Title: Method of manufacturing selenium rectifiers
IPC: H01L21/10
Filed: 1957-10-04
Abstract: A selenide layer is formed on an iron group e.g. nickel coated metal base plate by evaporating a layer of halogenated selenium up to 15m thick on to the coating while it is held at below 100 DEG C in vacuo, heating to react the selenium with the nickel layer, cooling, and reheating to convert the selenide to a conductive state.  A further selenium layer is then evaporated in vacuo on to the converted selenide layer.  The reaction conditions may be chosen so that not all of the nickel and selenium react, in which case the selenide and unconverted selenium are mechanically mixed to form a single uniform layer.  Additives may be included in the further selenium layer by simultaneous evaporation.  The individual heating and evaporating steps may be performed in the same vacuum by selectively switching on the heaters for the base plate and the appropriate evaporators without removing the plates.  The coated base plate is used in the manufacture of a rectifier (see Group XXXVI].
Patent GB-683995-A (GB)
Title: Improvements in circuits for testing outlets in automatic selector switches
IPC: H04Q3/00
Filed: 1950-12-28
Abstract: 683,995. Automatic exchange systems. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Dec. 28, 1950 [Dec. 31, 1949], No. 31486/50. Class 40 (iv). In a circuit in which free and busy outlets are distinguished by potentials, a quick acting test relay T is disabled over a rectifier g at busy outlets but pulls up at free outlets and applies a higher potential to its winding so that the outlet under test acquires a busy potential marking. As shown, a selector S previously positioned by dialled impulses hunts for a free outlet under the control of a rotary magnet D. Busy outlets have a potential of - 6.8 volts and point P on a potentiometer R1, R2 a potential of - 10 volts so that rectifier g is cut off. A free outlet initially exhibits battery potential of - 60 volts but acquires a temporary busy marking potential of - 9.2 volts when the test relay responds so that the outlet is immediately marked busy to other switches. The test relay disables relays D and TT to stop the switch and disconnect the potentiometer. A slow-acting differential relay C individual to the outlet then pulls up over winding C1 and inserts a resistance R3 which changes the outlet potential to a final busy value of - 6.8 volts. In the next switching stage (not shown), an off-normal contact k connects relay winding C2 in parallel with T. At the completion of the call, a busy relay (not shown) opens contacts h1, h2 and relays T and C restore to normal. Suitable ohmic values of the resistances and relay windings to provide the stated potentials are given in the Specification.
Patent GB-396968-A (GB)
Title: Improvements relating to the production of propionic acid by fermentation
IPC: C12P7/52
Filed: 1932-11-08
Abstract: The production of propionic acid by fermentation of carbohydrates is effected in presence of bentonite, or a hydrated alumina such as activated alumina (a granular partially dehydrated substance containing 91,23 per cent. of aluminium oxide) by means of various strains of B. acidi proprionici with or without other bacteria such as those which produce lactic acid, those which hydrolyse nitrogenous substances (e.g. the Proteus group), those which ferment salts of organic acids (e.g. the Alkaligenes group) and the mannitol-forming bacteria used according to Specification 390,769 such as B. illegible data B. gayoni and Lactobacillus fermentum.  The inoculation with the different bacteria may be successive in any order or simultaneous. The process may be effected at 30-31 DEG  C. with an acidity of pH = 5,4-6 maintained by an excess of calcium carbonate.  Examples and tables are given showing the results obtained under specific conditions, and results for kieselguhr and silica gel are included for comparison.
Patent GB-837643-A (GB)
Title: Improvements in or relating to textile fibre drafting apparatus
IPC: D01H5/56
Filed: 1957-10-09
Abstract: 837,643. Textile drafting arrangements. CASABLANCAS HIGH DRAFT CO. Ltd. June 27, 1958 [Oct. 9, 1957], No. 31569/57. Class 120(2)  In apparatus having the top-rollers loaded and guided by an arm pivotable about a rear mounting, a floating spring- influenced member bears in the working position between an abutment at the rear of the apparatus and the arm, so that the arm is prevented from lifting beyond a predetermined position. The member may take the form shown at 20, when the head of a screw 21 bears against the upper wall of the arm behind the shaft 9 on which the arm is mounted; the screw is adjustable in plates 20a, 20b which bear on shoulders 16d and carry a trigger 24 pressed by a spring 25. The shoulders 16d are provided on a collar 16 composed of two spaced-apart plates riveted together and mounted on the shaft 9 by a key 16b and a set screw 18 bearing on a flat 9b, a nut 18a in recesses 16c in the plates being provided. When the pressure is momentarily relieved from the screw 21 the trigger can be manipulated to move the plate 20a from the shoulders 16d so that the arm can be swung to an inoperative position where the plate 20a engages a second pair of shoulders 16e on the plates 16. With the arrangement shown, the position of the plates 16 on the shaft 9 and therefore of the shoulders 16d can be accurately set: moreover with the parts 16d, 20a disengaged, the screw 21 can be minutely adjusted through an aperture 23. In the operative position the head of the screw 21 is prevented from accidental rotation by a pad 22.