baber/WOPTO huggingface dataset:
Patent GB-470149-A (GB)
Title: Improvements in and relating to metal cutting or other machine tools
IPC: B23Q15/10
Filed: 1936-11-07
Abstract: 470,149. Vibration-dampers. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 7, 1936, No. 30382. Convention date, Nov. 7, 1935. [Class 108 (iii)] [Also in Groups XXII and XXXVII] Oscillations of the driven unit of two electrically coupled machines are pre vented by a vibra tion damper 33 con sisting of a flywhee 34 connected to one of a pair of discs 35, 38 located detween flanges 39, 40 on the driven member. The discs are coupled by pins 45 and are pressed apart by springs 41 and rubber member 42 so as to engage friction faces 43. Sudden movements of the shaft 37 cause slipping of the friction faces and absorption of vibration.
Patent GB-691587-A (GB)
Title: Pneumatic tyre
Inventor: GIBBS EVERETT HAYWARD
IPC: B60C11/01
Filed: 1951-12-31
Abstract: 691,587. Pneumatic tyres. SEIBERLING RUBBER CO. Dec. 31, 1951, No. 30436/51. Class 144 (ii). In a tyre having a tread 11 formed by heavyduty circumferentially-spaced traction lugs 13 extending laterally from each side of a central circumferential rib 14 to opposite side edges of the tread, one or more circumferential slits 20, 21 extend radially inwardly from the surface of each lug 13 to a substantial depth without reducing the forward traction qualities of the lugs, the slits 20, 21 forming blocks which are laterally flexible to minimize lateral skidding. As shown, the lugs 13 are parallel on both sides of the rib 14 and their outer surfaces are laterally arcuate with the axially outer edges rounded, to merge with the tyre side walls 15, at a radius at least equal to the depth of the grooves 12 between the lugs 13. Two parallel slits 20, 21 are cut in each lug 13, the outermost slit 21 being adjacent the junction of the rounded lug corner with the crown surface of the lug. The slits are cut normal to the curvature of the tread and extend to a depth of one-third to two-thirds of the depth of the grooves 12. A plurality of spaced circumferential slits may extend over the length of each lug 13.
Patent GB-1424075-A (GB)
Title: Storage-stable and thermosetting mixtures
IPC: C08F20/52
Filed: 1973-06-27
Abstract: 1424075 Glass fibre laminates CIBA-GEIGY AG 27 June 1973 [4 July 1972] 30463/73 Heading B5N [Also in Division C3] Glass fibre reinforced laminates are prepared (see Examples 13-15) using a resin which is the the reaction product of a bis-imide of formula in which A is a divalent organic radical and B is the residue of an ethylenically unsaturated radical and a halogen containing oligomer of formula in which X is F, Cl, or Br, R 1  and R 2  are H or methyl, n is 1 to 4 and p is 2 to 20. Optionally, part of the bis-(cyclopentadienyl) oligomer can be replaced by an oligomer of formula in which Y is a dialkyl or diaryl silyl radical or a divalent aliphatic, cycloaliphatic, araliphatic or aromatic hydrocarbon radical. A stack of resin-impregnated fabrics is pressed between high-gloss copper foils.
Patent GB-1204457-A (GB)
Title: Vacuum switch
IPC: H01H33/66
Filed: 1969-06-16
Abstract: 1,204,457. Vacuum switches. SIEMENS A.G. 16 June, 1969 [15 June, 1968], No. 30480/69. Heading H1N. A vacuum switch has an envelope comprising a central resilient corrugated glass member 1 sealed to two metal end closure plates 2. The glass tube is about 1 mm. thick and is arranged to be unstressed with the contacts 4, 5 about 1 mm. apart; it is thus in compression when the contacts are closed.
Patent GB-431617-A (GB)
Title: Improvements in and relating to electric transformers
IPC: H01F27/28
Filed: 1934-10-24
Abstract: 431,617. Transformers. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. Oct. 24, 1934, No. 30499. Convention date, Oct. 26, 1933. [Class 38 (ii)] In a transformer having a winding comprising several conductor groups connected in parallel and wound side by side, each conductor group is composed of several conductors radially superposed on one another the individual conductors of neighbouring groups being interchanged so that the flux linkage with each conductor is the same and all the conductors carry equal currents. Fig. 1 shows two adjacent parallel connected conductor groups I and II each comprised of four parallel connected conductors. At the first crossing point inner conductor 1 in Group I is bent as shown in Fig. 5, to assume the same radial position in Group II while outer conductor 8 in Group II is bent to assume the same radial position in Group I. At the next crossing point, Fig. 2, the inner conductor 2 changes over from Group I 'to Group II and outer conductor 7 changes over from Group II to Group I in the above described manner. Other succeeding interchanges take place until each individual conductor has occupied each radial position at least once. The distances between the crossing points are equal and may each comprise a whole or fractional number of turns. In a modification three conductor groups are used conductors being interchanged between the first and second groups at the first crossing point, between the second and third groups at the second crossing point and between the first and second group at the third crossing point and so on.
Patent GB-306076-A (GB)
Abstract: 306,076. Krupp Grusonwerk Akt.- Ges. Feb. 15, 1928, [Convention date]. Addition to 267,091. Cores, covering by winding.- In a tape-winding machine according to the parent Specification the spool holders 3, 4 are arranged in two groups with the spindles 7, 8 of the bearing pins for the spools of the respective groups projecting in opposite directions, and a common adjusting device is provided for all the holders in each group. Preferably each group of holders is connected by a toothed segment 9. 10 to a toothed ring 12, 13 and is adjustable manually by gearing 15, 17 mounted on the winding frame 1. The screwed actuating spindles 17 for the two groups may be mounted alongside one another so that they may be coupled together for effecting simultaneous adjustment of all the spool holders.
Patent GB-842447-A (GB)
Title: Improvements relating to electrical socket contacts
Inventor: DEAKIN STANLEY THOMAS
IPC: H01R13/115
Filed: 1956-10-08
Abstract: 842,447. Two-part couplings; holders for thermionic valves. SIEMENS EDISON SWAN Ltd. Sept. 30, 1957 [Oct. 8, 1956], No. 30631/56. Class 38(1). A socket contact formed of sheet metal comprises prongs 2, 3, and a tag portion 4, the prongs being twisted' in the same direction about parallel longitudinal axes to form laterally extending bends. The radius of curvature of each bend is greatest at the ,line of separation of the prong and decreases progressively to the outer edge so that the free ends 9, 10, of the prongs overlie each other. These ends are extended to form a pair of feet 11, 12, adapted to engage an electrical connection pin lying between them. As shown, the side edges 13, 14 are swaged to assist insertion of a pin. Alternatively, the edges 15, 16, can be swaged for this purpose. An end portion 18 of the tag extends perpendicularly to the prongs so as to provide means for making an electrical connection, and a shoulder 20 assists in location of the contact in an assembly. An assembly comprising a number of contacts secured to an insulating body may be formed so that the pins, when inserted, lie in a direction generally transverse of the longitudinal axes of the prongs. In another arrangement, the inserted pins are generally parallel to the longitudinal axes, Figs. 2, 3 (not shown).
Patent GB-1130398-A (GB)
Title: Preparation of an enzyme and use of same for maltose production
IPC: C12P19/22
Filed: 1966-07-07
Abstract: 1,130,398. Enzyme hydrolysis of starch. HAYASHIBARA CO. Ltd. 7 July, 1966 [8 July, 1965], No. 30656/66. Heading C2C. [Also in Division C3] Preparation of high maltose content syrup by treating a preliminarily liquefied starch solution with an enzyme extract solution (consisting mainly of #-amylase) obtained by extraction of wheat bran with water at a temperature of 20-40 C. The liquefied starch solution may be obtained by a preliminary liquefaction of an emulsion of starch, e.g. refined sweet potato starch, with an acid such as oxalic acid or with a liquefied enzyme such as Subtilis enzyme. The enzyme extract solution is prepared by treating a portion of each specified wheat bran with four times its weight/ volume of water for a specified time and then separating the extract liquid. The #-amylase activity of each extract was determined by reference to the quantitative conversion of soluble starch to maltose. The saccharification of starch to maltose using an extract of Canadian wheat bran at a pH. of about 5 to give products of D.E. about 50 containing specified amounts of maltose, maltotriose, maltotetraose, glucose and dextrin is described. According to a further aspect of the invention saccharogenic enzyme extracts, obtained by solid culture of micro-organisms such as Aspergillus or Rhizopus (e.g. Rhizopus formosensis or Rhizopus No. 47) on the extracted residues of the above-mentioned wheat bran, may be used to prepare dextrose solutions with a D.E. of 98%.
Patent GB-536892-A (GB)
Title: Improvements in or relating to starters for alternating current electric motors
IPC: H02P1/28
Filed: 1939-11-24
Abstract: 536,892. Controllers. WEST & CO., Ltd., A., and BENNEY, R. J. Nov. 24, 1939, No. 30733: [Class 38 (iii)] A tapped-transformer or star-delta starter for a motor M, Fig. 1, comprises contacts 2 which are closed for starting, by moving a handle in one direction, and contacts 3 which are opened and contacts 4 which are closed for running, by moving the handle in the other direction. Anti-clockwise rotation of actuating shaft 40, Fig. 4, lifts link 19 and with it a bar carrying contacts 2, the link is latched up by a detent 25 engaging a pin 26. Subsequent clockwise rotation of shaft 40 lifts link 20 and with it a bar carrying contacts 3, 4. If the clockwise rotation is made slowly a pivoted cam 27 remains in contact with a pin 32 and causes tripping of the detent 25.
Patent GB-159651-A (GB)
Title: Improvements connected with automatic weighing scales
IPC: G01G1/26
Filed: 1919-12-09
Abstract: 159,651. Avery, Ltd., W. & T., and Gilbert, A. S. Dec. 9, 1919. Loose-weight apparatus.-In an automatic weighing-scale, the weights are formed as a series of superimposed members of inverted V section and are removed from the weight box to a fixed support by means of a lifting-jack. The weight box 6 is suspended from one end 3 of the weight beam by means of rods 5, and has a top 6<a> of inverted V shape to receive weights 8 of - corresponding shape. Yokes 16 raised by a motor-driven lifting-jack 10 are arranged to pick up the weights when desired. Those weights not required on the weight box are secured to the framework 4 by passing pins through lugs 8a on the weights, the remaining weights being returned to the weight box. Specification 159,064 is referred to.
Patent GB-783826-A (GB)
Title: Improvements in or relating to double extension slides
IPC: A47B88/493
Filed: 1955-10-27
Abstract: 783,826. Drawer slides. METAL TRIM, Ltd. and PENKALA, E. Oct. 27, 1955, No. 30775/55. Class 52(1) In a telescopic slide having an intermediate member 2 mounted on balls or rollers 5, 6 discs 7 rotating about vertical axes are carried by the intermediate member and engage the fixed rail 1 and drawer carrier 4. Pressed-out lugs 8, 9 form stops for the drawer carrier and intermediate member and resilient shims may be interposed between the discs 7 and the drawer carrier rail 4. Specification 727,787 is referred to.
Patent GB-535834-A (GB)
Title: Improvements in or relating to wide frequency band amplifier systems
IPC: H03F1/50
Filed: 1939-11-27
Abstract: 535,834. Valve amplifying and modulating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Nov. 27, 1939, No. 30920. Convention date, Nov. 26, 1938. [Class 40 (v)] A transmitting amplifier or modulator for broad band (e.g. television) signals comprises two push-pull pairs of valves 1, 2 with their grids energized from an input transmission line TL at point a quarter of a wave length, or an odd multiple thereof, apart, and their anodes similarly energizing an output transmission line TL<SP>I</SP>. For each pair of valves the reduction of the impedances associated with the other pair compensates for the reactive effect of its associated impedances, and hence for side bands well displaced from the carrier the impedance associated with the valves appear more nearly reactive, and thus a broader frequency band can be handled. The output from an amplifier stage as shown can be directly connected to the grid circuits of a further such stage. Modulating potentials may be applied to either the grids or the anodes and carrier current applied through the line TL. The output can be connected to an aerial by a transmission line T<SP>1</SP>L<SP>1</SP> of half the characteristic impedance of the line TL<SP>1</SP>,
Patent GB-1471678-A (GB)
Title: Watch movement with a circular movable indicator member
IPC: G04B19/247
Filed: 1974-07-12
Abstract: 1471678 Calendar watches ETA AG EBAUCHES-FABRIK 12 July 1974 [13 July 1973] 30928/74 Heading G3T In a watch movement having a circular rotary indicator, e.g. a date ring 2, provided with peripheral teeth 3 and guided by a raised portion 1a of a base-plate 1, the ring 2 is retained by a first cover element having an edge 11 covering the teeth 3 over an arc of less than 180 degrees and a second cover element so arranged that its mounting on the base-plate need not be disturbed during assembly or removal of the ring. As shown the two cover elements are parts of a single retaining plate 10 screwed to the base-plate. The part forming the second cover element has retaining projections 14-16 separated by notches 12, 13. One side of the ring 2 can be hooked under the edge 11 during assembly, and the teeth 3 on its other side passed through the notches 12, 13. In the rest positions of the ring, determined by a jumper 7, three teeth lie partly under the projections 14-16. To aid retention of the ring during its advance, the jumper may be shaped to bias the ring toward the baseplate, Figs. 5, 6 (not shown). In alternative arrangements, the second cover element is physically separate from the first and is formed by a jumper (28) Fig. 4 (not shown) with edges (30) which overlap two teeth 3, or by a beak (26) Fig. 3 (not shown) on an arm (25) which can be resiliently or plastically deformed to bring the beak out of or into an overlapping position.
Patent GB-1212726-A (GB)
Title: Improvements in or relating to the production of microporous articles of high polymers
IPC: B01D71/54
Filed: 1968-06-28
Abstract: 1,212,726. Microporous films and membranes. SOC. CRYLOR. 28 June, 1968 [30 June, 1967], No. 31055/68. Heading B5B. [Also in Divisions C3 and D1] A microporous film, membrane or similar sheet is prepared by shaping, e.g. by casting or extruding, a thin film from a solution of a high polymer, e.g. acrylonitrile polymer, a segmented polyurethane or a polyvinyl alcohol polymer or a mixture of two or more polymers, which is insoluble in cold water, then coagulating and washing the film, freezing, without intermediate drying, the water impregnated film by rapid cooling to a temperature equal to or below -10 C., and drying the resulting material by slow and progressive heating in a vacuum. Suitable polymer solvents are dimethylformamide (DMF), dimethylsulphoxide (DMS) and water and suitable coagulating baths are a mixture of water-DMF, water-DMS, water, or an aqueous saturated salt solution, e.g. sodium sulphate depending upon the polymer.
Patent GB-302471-A (GB)
Title: Improvements in furnaces
IPC: F23L15/04
Filed: 1927-11-19
Abstract: 302,471. Bennis, A. W. Nov. 19, 1927. Air, supplyirrg.-In a furnace in which the space beneath the grate is divided transversely into three or more compartments for the reception of separate supplies of air, hot air is supplied to the intermediate portion of the grate, cool or warm air to the front and cold or cool air to the rear of the grate. Fig. 1 shows a furnace with a travelling grate with three compartments to which air is supplied from conduits 20, 22, 23 under the control of dampers 25. The gases from the furnace pass through air heaters 13, 14. Air supplied by a fan 17 passes direct to the rear compartment through the conduit 23 and also through the air heater 14 from which a part may be led through the air heater 13, where it is further heated. The air from the air heater 14 is led through the conduit 20 to the front of the grate, while that from the air heater 13 passes through the conduit 22 to the centre thereof.
Patent GB-1157327-A (GB)
Title: Improvements in or relating to preparing Adamantane Compounds
IPC: C07C49/453
Filed: 1966-07-12
Abstract: 1,157,327. Adamantane-2-one. PHILIPS' GLOEILAMPENFABRIEKEN N.V. 12 July, 1966 [15 July, 1965], No. 31175/66. Heading C2C. Adamantane-2-one is prepared by oxidizing a compound of the formula wherein X represents hydrogen, a halogen atom, free hydroxy group or hydroxy group esterified with phenol methanol or ethanol or esterified with an organic or inorganic acid, a free carboxylic group or a carboxylic group esterified with phenol, methanol or ethanol, a carboxylamide group, a cyano-group or an amino group which is substituted by an electro-negative group, by treatment with concentrated sulphuric acid, fluorosulphonic acid or a mixture thereof. Diluents for sulphuric acid mentioned include phosphoric acid, acetic or propionic acid, hydrochloric and hydrofluoric acid. If 1-bromoadamantane is employed as starting material a silver salt, e.g. silver sulphate, may be added as a halogen binder. Examples are furnished. The product is converted to 2-amino-adamantane by hydrogenation in the presence of ammonia and ethanol using a palladium or alumina catalyst.
Patent GB-217848-A (GB)
Title: Improvements in and relating to ball bearings
IPC: F16C19/16
Filed: 1923-12-14
Abstract: 217,848. Dowald, A. Dec. 14, 1923. Ball bearings. - To obtain rolling of the balls without slip in a ball bearing having races with flanges h to take up axial thrust, the ball grooves have a radius greater than the ball radius, and when taking radial and axial load the points of contact a, a<1>, b, b<1>, of the balls with the races lie on the surfaces of cones having their apices in one point O on the bearing axis, while when the load is only radial the points of contact lie in the central plane of the row of balls. The radius of each ball groove is preferably two-thirds of the diameter of the ball.
Patent GB-307737-A (GB)
Title: An improved device for detecting the presence of needles in textile materials
IPC: D06H3/14
Filed: 1928-10-30
Abstract: 307,737. Magnet-Werk Ges. Eisenach Spezialfabrik f³r Elektromagnet- Apparate. March 12, 1928, [Conventio?z date]. Testing. - The presence of metallic needles in textiles fabrics is detected by passing them between electrodes charged to a high voltage, the presence of the needles reducing the air gap and causing a spark disoharge to take place. The alterations in the electrical system produced when sparks are formed are utilized for effecting the operation of devices for stopping the machine. The fabric 5 to be tested for the needles 4 is passed between rollers 2, 3, flat surfaces, or a roller and a flat surface, charged to a high potential by a transformer 1 or by continuous current apparatus. The variation in the primary current of the transformer when sparks pass between the electrodes may be caused to operate a relay to stop the machine.
Patent GB-264985-A (GB)
Title: Improved apparatus for synchronising the discharge of aircraft machine-guns with propeller rotation
IPC: F41A19/05
Filed: 1925-12-15
Abstract: 264,985. Harris, C. B. Dec. 15, 1925. Fire between aircraft propeller blades, controlling and synchronizing.-Relates to synchronizing gear of the kind in which a member adapted to engage a cam rotated by the engine is moved to the operative position by a bell-crank lever which is connected by a link to a lever forming part of the firing-gun attachment on the gun. According to the invention, the cam is a flat ring 1 having bolt-holes 3 by which it may be fixed in the desired angular position directly on the propeller boss, and having a peripheral rim 4 formed with humps or depressions. As shown, the cam operates a rod 11 connected by a cranked lever 14 and link 20 to a firing lever 19 on the gun. The lever 19 is pulled back by a spring 23 when a lever 24 is pressed, the mechanism being thereby rendered operative. When the lever 24 is released, the rod 11 is lifted off the cam by a light spring 17 acting on the cranked lever 14.
Patent GB-759927-A (GB)
Title: Improvements in electric switch lamp holders
Inventor: BECKMANN ALFRED CECIL
IPC: H01R33/955
Filed: 1953-11-16
Abstract: 759,927. Lamp-holders. FITZGIBBON & MURRAY, Ltd. Nov. 16, 1954 [Nov. 16, 1953], No. 31692/53. Class 38 (1). [Also in Group XXXVII] In a lamp-holder incorporating a push-bar switch, one of the spring plunger contacts 2 is connected to one terminal 9 by a strip 5 passing through a slot 4 in the insulating push-bar 3 whilst the other contact 2 is connected to the other terminal 9 by spring-pressed balls 10, 11 engaging a sleeve 13 carried by the push-bar and forming the moving switch contact. The strip 5 and slot limit the movement of the push-bar which is located in the switch " on " and " off " positions by the balls engaging the sleeve 13 and recesses 14 in the bar respectively.
Patent GB-1012409-A (GB)
Title: Improvements in roulette-type game apparatus
IPC: A63F5/04
Filed: 1963-08-12
Abstract: 1,012,409. Chance apparatus. A. A. B. CHIPPER. Oct 20, 1964 [Aug 12, 1963], No. 31701/63 Heading A6H. Chance selection apparatus of the roulette type comprises a disc 2 mounted for rotation on an adjustable base 9, and comprising a concave upper surface which is divided into a plurality of distinguishable compartments by a series of fins 5 extending radially outwards from the centre of the disc and stopping short of the periphery of the latter, the selection being made by a ball thrower on to the moving disc and entering one of the compartments as the disc comes to rest. Stake boards may be provided
Patent GB-365603-A (GB)
Title: Improvements relating to wind screen wipers for motor vehicles
IPC: B60S1/34
Filed: 1930-10-22
Abstract: 365,603. Windscreen wipers. LUCAS, Ltd., J. and LUCAS, 0., Great King Street, Birmingham. Oct. 22, 1930, No. 31707. [Class 138 (i).] A windscreen wiper l is automatically engaged or disengaged from its driving means a by the closing or opening of a screen c. A spindle d on the wiper is in line with a spindle f on the driving means. The two spindles are engaged by a coupling consisting of a tongue hand a slot g, or a hollow splined cup on the spindle d may engage a toothed member on the spindle f or other convenient couplings may be used. If desired the spindle f may be spring mounted.