baber/WOPTO huggingface dataset:
Patent GB-556137-A (GB)
Title: Improvements in or relating to moving coil sound receivers and transmitters
IPC: H04R1/08
Filed: 1942-05-27
Abstract: 556,137. Telephone instruments. SCHMIDT, K. H. May 27, 1942, No. 7191. [Class 40 (iv)] In a moving coil speaker or microphone resonances caused by air cushions within the area of the coil and laterally of it are damped by a sheet 13 of air-permeable material, such as wool or silk fabric or thin soft paper, interposed between and secured to the diaphragm 8 and coil 7 and passing through the junction between them, the sheet extending without substantial interruption over the whole face of the magnet and being held at its perimeter. In the form shown the diaphragm is formed with reversed conical zones, and is made by passing a sector-shaped sheet between dies. It is supported at the front by a second sheet 18 of air-permeable material, which is secured to the ridge 12 and held at its periphery. Resonances caused by the vibrating system itself are damped by pads 16 of soft material such as cotton wool between the moving coil and the pole faces of the magnet. The instrument is enclosed in a box 21, a gap 22 being left between the front of the box and instrument which is chosen so that the acoustical system formed by it and the box cavity resonates at the frequency of, but in phase opposition to, a resonance peak produced by the diaphragm or other causes. A grid 20 protects the diaphragm. In a modification, the diaphragm 7 is supported by a corrugated marginal portion integral with it, the sheet 18 being omitted. The instrument may be secured in an outer casing 24, Fig. 3, by resilient rings 26, 27, the forward pressure of the rings 26 causing distortion of the section of the rings 27 which prevent the instrument passing out through the front aperture in the casing.
Patent GB-125781-A (GB)
Title: Improvements in Washers for Coal and the like.
Inventor: STOBART WILLIAM RYDER
IPC: B03B5/62
Filed: 1918-04-30
Abstract: 125,781. Stobart, W. R. April 30, 1918. Upward-current classifiers.-In an apparatus for washing coal and the like, which may be an upward-current classifier of the type described in Specification 6789/84, the washer is mounted on a weigh-bridge, the tipping of which, due to the accumulation of heavy refuse, is utilized to operate the discharging-means or to indicate when such operation is necessary. The washing-hopper a, to which water is admitted at d and coal at c, is mounted on a weigh-bridge i, the agitators b being independently supported. The washed coal overflows with the water and passes over a perforated plate f to a conveyer g. When the weighbridge falls, the discharger r, which may be of the form shown in Fig. 3, may be operated manually or by an electric motor u controlled manually or automatically. After the discharge has been effected, the apparatus rises and remains in that position until there is again a sufficient accumulation of heavy refuse. When the motor u is automatically controlled, means may be provided for keeping the motor circuit closed until the discharger has completed its movement, irrespective of possible vibration of the weigh-bridge. In some cases, the discharger may be driven continuously, the speed of the motor being varied automatically by means of resistances controlled by the tipping of the weigh-bridge through a dashpot device.
Patent GB-831399-A (GB)
Title: Improvements in and relating to electromagnetic interaction pumps or devices for usein metal casting techniques
IPC: G01F1/58
Filed: 1958-03-06
Abstract: 831,399. Electric furnaces. SOUDURE ELECTRIQUE AUTOGENE SOC. ANON. PROCEDES ARCOS. March 6, 1958 [March 21, 1957], No. 7258/58. Class 39(3) [Also in Group XXXV] The rate of fall of a vein of a molten metal in a tube of refractory material, e.g. iron or steel being delivered from a crucible 9 to a mould or rolling mill, is controlled by a travelling magnetic field produced by polyphase excited cores on either side of the tube (see Group XXXV). The windings may be energized at frequencies above mains frequency, e.g. 500-1000 c.p.s. in the appropriate phase-sequence to retard or accelerate the gravity flow. The thermal gradient in the tube 2 may be reduced by electric preheating of the envelope 11 from a source 28, air circulation being prevented by a temporary metal plate 29. The interior of the tube 2 may be heated by a U-shaped graphite resistor 35, 37 which is lowered into the tube and withdrawn before metal is allowed to pass into the tube. Alternatively, where the frequency is high enough, the tube may be preheated by introducing a steel rod which gradually heats up due to induced currents, and finally melts.
Patent GB-1242172-A (GB)
Title: A process for chemically cutting glass
IPC: C03C21/00
Filed: 1969-02-11
Abstract: 1,242,172. Chemically cutting glass. FORD MOTOR CO. Ltd. 11 Feb., 1969 [23 Feb., 1968], No. 7266/69. Heading C1M. Glass is chemically cut by:- (a) depositing on the glass in the configuration to which the glass is to be cut a chemical exchange medium containing ions capable of exchanging with larger ions in the glass; (b) carrying out the ion exchange to produce a plurality of minute cracks along the configuration of the deposited medium; and (c) breaking the glass along the configuration of the medium along which the cracks have developed. The glass may be a soda lime glass, in which case the exchange medium may be 50 wt. per cent china clay, 25 wt. per cent LiNO 3  and 25 wt. per cent LiCl, made to a paste with water. The paste may be applied with a brush to give a line thickness of 1/ 64 -3/ 32  inch, and the ion exchange may be carried out by heating to 900‹ F. for approx. 30 minutes. In an alternative embodiment, however, a glass ribbon 13 emerging from a molten metal float chamber 10 (at a temperature of 1100‹ F.) is printed, by means of printing roll 20, with the above mentioned paste in the configuration of a vehicle windscreen 23, whereafter the ribbon is passed through annealing lehr 17, in which it is cooled to 200‹ F. or below. The ion exchange and crack forming occurs in the lehr and on cooling the glass is broken and the edges polished.
Patent GB-471867-A (GB)
Title: Improvements in or relating to electric signal transmission systems
IPC: H04B3/28
Filed: 1936-03-10
Abstract: 471,867. Preventing inductive disturbance. COLLARD, J. March 10. 1936, No. 7276. [Class 40 (iv)] The interference picked up by a number of coaxial lines is neutralized by coupling thereto an auxiliary line. preferably also of the coaxial type, having the same attenuation and wave velocity, at least at the lower frequencies. Fig. 1 shows two signal lines 6, 9 for east and west transmission respectively feeding receiving transformers 10, 11, the central conductor of each line being connected at the receiving end to the central conductor of the auxiliary line 3. The signal line and the auxiliary line may be terminated by equal impedances R as shown, or they may be left open. Fig. 2 shows a modification using valve couplings instead of transformer couplings. Here the signal lines 17, 19 transmit in the same direction and are coupled to the anode of valves 20, 21, while the auxiliary line 15 is coupled to the grid of both valves, and the valves are adjusted so that the gain is unity. Each line is terminated by an impedance Z. A single auxiliary line may be used in conjunction with four signal lines, two of which transmit in each direction. If one of the lines is used in both directions, the auxiliary line must be coupled to it at both ends. The auxiliary line may be used also for reducing interference between a pair of coaxial lines and to some extent between more than two such lines. Since it is sufficient in practice to neutralize the interference at frequencies below 50 kilocycles, a coaxial line of smaller diameter may be used as the auxiliary line. The attenuation and wave velocity of the signal lines are then adjusted to that of the auxiliary line by means of series networks as described in Specification 466,418.
Patent GB-1165093-A (GB)
Title: Apparatus for Establishing the Co-Ordinates of Defects of a Sheet of Material
IPC: G07C3/14
Filed: 1968-02-15
Abstract: 1,165,093. Selective signalling. ATELIERS HEUZE, MALEVEZ & SIMON REUNIS S.A. 15 Feb., 1968 [13 June, 1967]. No. 7374/68. Heading G4H. The co-ordinates of defects in a sheet of material e.g. glass, are determined by a row of photo-cells transverse to the direction of travel of the sheet, one of the photo-cells being energized or de-energized on detection of a reflective or opaque piece of gummed paper stuck on to the sheet at each defect, and means for measuring increments of movement of the sheet between detection of the leading edge of the sheet and detection of each defect. The co-ordinates may be supplied to a computer for selecting a cutting programme involving the least amount of wastage.
Patent GB-416424-A (GB)
Title: A new or improved control mechanism particularly for controlling preselective change-speed gearing
IPC: F16H63/46
Filed: 1933-03-11
Abstract: 416,424. Controlling variable-speed gearing ; linkwork. PULS, E. F., 48, Middleton Hall Road, King's Norton, Birmingham. March 11, 1933, No. 7380. [Classes 80 (ii) and 80 (iii).] A control mechanism, particularly for preselective epicyclic variable-speed gearing, comprises a control-lever 9 and a controlled follower 5, with interengaging flat surfaces 8, normally held in contact by balanced tension-springs 10, 11, so that when the control-lever 9 is moved to the inclined position shown in Fig. 3, the springs apply a torque to the follower 5, which causes it to follow the lever 9 when free to do so. The follow-up torque is substantially constant for all positions of the lever. Fig. 4 shows the mechanism applied to the epicyclic gear described in Specification 227,460, [Class 80 (ii)]. The control-lever 19 is connected, through a rod 20, to the preselector, and the controlled follower 14 is formed with detent notches 29, corresponding to the speeds, and engaged by a peg 25 on a three-armed lever 26, connected to the top-speed clutch 28 of the gear and to a main clutch-pedal 27. The follower 14 is freely mounted on a shaft 13, geared to a shaft which carries cams for operating brake-bands and the shaft 13 has fast on it an arm 31, connected by a slotted link 30 with the peg 25. To effect a change, the preselector-rod 20 is set and the pedal 27 is subsequently depressed to free the peg 25 from the notches 29 and allow the springs 22, 23 to move the follower 14 to its new position. Upon releasing the pedal 27, the peg 25 moves through a return distance determined by the setting of the notched follower 14 and, through the link 30, turns the shaft 13 to introduce the selected speed. The notch 29 corresponding to direct-drive is deeper than the others to allow the clutch 28 to engage fully. The pedal 27 thus has a definite position corresponding to each speed. The Provisional Specification states also that a single radial spring may be used in place of the two springs 10, 11, Fig. 3.
Patent GB-429796-A (GB)
Title: Improvements relating to lubricated valves
IPC: F16K5/22
Filed: 1934-03-10
Abstract: 429,796. Lubricating valves. AMERICAN CAR & FOUNDRY CO., 30, Church Street, New York, U.S.A. March 10, 1934, No. 7711. Convention date, March 15, 1933. [Class 12 (ii)] A plug cock is sealed and lubricated by lubricant forced by the ram 30 in the stem through a transverse passage 20 to the annular channels 18 and 22, and to the annular groove 48 through the longitudinal grooves 40, 44, on the plug surface. These are connected to the channel 22 through channels 38 on the valve body, and through constricted passages 52 in the plug surface. A spring 58 holds the surface 24 against the valve body. Excessive lubricant in the channel 18 escapes into the space 16. A leak passage 64 connects the space 56 to the plug bore 6.
Patent GB-1125632-A (GB)
Title: Fire resistant modified epoxy novolac resins
Inventor: PARTANSKY ALEXANDER MICHAEL
IPC: C08G8/28
Filed: 1966-02-22
Abstract: 1,125,632. Fire-resistant coatings. DOW CHEMICAL CO. 22 Feb., 1966, No. 7763/66. Headings and B2E and B2K. [Also in Divisions B5 and C3] In examples 33-59, glass cloth with a chromate finish is impregnated with an acetone solution of a halogenated epoxy resin, which resin is the reaction product of an epoxlated novolac and a dibromo-, tribromo-, tetrabromo-, tetrachloro- and pentachiorophenol or mixtures thereof with or without bisphenol A, a curing agent for the epoxy resin and optionally a non-halogenated epoxy resin and Sb 2 O 3 , by drawing the cloth through the solution and adjusting the pick up with a doctor roll. After air drying at room temperature the resin is partially cured at 120C. In example 60 coatings are formed from a solution of diethylenetriamine and a halogenated epoxy resin derived from an epoxylated novolalk resin, 2, 4, 6-tribromephenol, tetrabromophenol and bisphenol A, in diethylene glycol monobutyl ether, by spreading the solution on a glass plate or by dipping a glass microscope slide into the solution, and curing at 50C.
Patent GB-271600-A (GB)
Title: Improvements in electrical resistance heaters for low temperatures
IPC: H05B3/00
Filed: 1926-03-22
Abstract: 271,600. Rhodin, J. G. A., and Westman, Ltd., E. B. March 22, 1926. Wire resistaces, cored and immersed.-An electric heating resistance consists of high-conductivity wire with insulation of organic material, such as cotton-covered copper wire, wound on tubes of thermally conductive material, such as copper, and operated at temperatures of 100-200‹ C., so as not to char the insulation. The wire C mav be enclosed in a doublewalled cylinder E, the space between the walls being filled with paraffin wax, or heavy oil; and the whole surrounded by heatinsulating material.
Patent GB-368989-A (GB)
Title: Collapsible chain ladders
IPC: E06C1/56
Filed: 1931-03-14
Abstract: 368,989. Ladders. THORNE, E. J., Napier, St. Clements Road, Parkstone, Dorset. March 14, 1931, No. 7921. [Class 20 (ii).] A flexible ladder has chain sides 3 which pass through apertures provided in the ends of the rungs 1 and are secured therein by countersunk cross screws 4 which pass through the ends of adjacent links. Intermediate apertures may be provided in long rungs through which pass supporting chains to form a multiple ladder.
Patent GB-436522-A (GB)
Title: Improved closure for bottles and like containers
IPC: B65D47/24
Filed: 1934-03-13
Abstract: 436,522. Closures for perfume and like bottles. FAVERI, S. DE, 19, Frith Street, London. March 13, 1934, No. 7927. [Class 125 (iii)] A closure for a scent bottle &c. comprises a tubular dis charging member 6 having an internal seating 7 piercec with delivery apertures 9 and a centrally apertured screw cap 10. A projection 8 is carried by the seating 7 and in conjunction with the tubular portion 6 provides two seatings 12, 13, which co-operate with seatings 14, 15 on the closure. Packing rings of cork &c. are provided between the seatings. A diaphragm 17 may be placed under the seating 7 which is pierced when the bottle is opened. In a modification the projection 8 is made detachable to permit refilling, and may have lateral apertures to facilitate the discharge of the liquid.
Patent GB-334491-A (GB)
Title: Improvements in and relating to timepieces
Inventor: WILSDORF HANS
IPC: G04B37/00
Filed: 1930-03-12
Abstract: 334,491. Wilsdorf, H. March 12, 1930. Addition to 333,853. Barrel and cylindrical hinges. - The timepiece according to the parent Specification is modified by forming the lower part 1 of the outer casing with an inturned flange 27 on which slides the plate 28 carrying the spring hinge 29 for the upper part 2. The spring 34 for this hinge is a blade, one end of which is attached to the plate 28 and the other end of which is attached to the part 2 after being twisted about its longitudinal axis.
Patent GB-164532-A (GB)
Title: Improvements in certain kinds of letter files
IPC: B42F13/12
Filed: 1920-03-18
Abstract: 164,532. Brace, Windle, Blyth, & Co., Ltd., and Bayliss, C. W. March 18, 1920. Post, claw, and like files.-In apron or bow files in which one half of the bow is displaceable laterally relatively to the other and the ends of the wires are formed with flat contacting faces, the overlapping ends of the wires are formed with their extreme ends bluntly pointed and rounded or inclined to the meeting faces of the wires so that there is no projecting part to obstruct the passage of the papers from one wire to the other. In the form shown in Figs. 1 and 3, in which the meeting faces of the wires 1, 2 are halved together, the wires terminate in rounded portions 7, 8. The flat faces 5, 6 are connected with the original thickness of the wire by inclined portions 9, 10 so that the wires may be 'moved towards each other to permit them to be folded down for packing or storage. In a modification in which the wires have inclined meeting surfaces as shown in Fig. 5, the extreme ends 17, 18 of the wires are slightly rounded.
Patent GB-969164-A (GB)
Title: Improvements in or relating to counters
IPC: G06M1/14
Filed: 1963-02-28
Abstract: 969,164. Counters. CHAMBON Ltd. Feb. 28, 1963 [Dec. 27, 1962], No.8050/63. Heading G4D. Each numeral wheel bears two ratchet wheels and each control pawl mounted between two adjacent wheels is controlled by a single notch on the one ratchet wheel of the lower order wheel to drive the other ratchet wheel of the higher order wheel. The pawls 4 are carried by a shaft 20 which oscillates through a tenth of revolution about the numerical wheel shaft 13. Each pawl 4 carries a pin 8 res-  training the next higher pawl except when the lower pawl is freed. The lowest pawl drives the units wheel by engaging the ten notches of the ratchet 23 in succession. When the wheel reaches transfer position its single notch ratchet 3 allows the next pawl 4 to drop under the action of spring 10, this pawl also driving the ten-notched ratchet of the next wheel. Spring-pressed detent 11 prevents unwanted motion.
Patent GB-565386-A (GB)
Title: Improvements in convertible ottomans or the like
IPC: A47C17/32
Filed: 1943-05-21
Abstract: 565,386. Ottomans convertible into bedsteads. SANDELIUS, B. G. H. May 21, 1943, No. 8096. [Class 52 (ii)] In an ottoman convertible into a bedstead by displacing a mattress -supporting frame 2, Fig. 1, laterally as shown by broken lines, and bringing a second frame 3 -into horizontal alignment therewith, the frame 3 is guided at each end' during its movements by a link 14 pivoted at one end 17 to the frame 3 and guided at the other end by pins 16, 19 engaging slots 16, 24. Spring-pressed plungers liberated by cam levers 30 retain the frames 2, 3 in' extended position and pivoted shoes 23 guide the pivoted side of the frame 3 into its lower position on brackets 21.
Patent GB-278965-A (GB)
Title: Improved agricultural plough
IPC: A01B15/10
Filed: 1927-03-24
Abstract: 278,965. Haar, G., and Weihermann, E. March 24, 1927. Disc-tool and single-furrow ploughs; tools.- In a plough comprising a rotary concave disc and a share having a cutting-edge acting as a coulter, the bearing e for the spindle d of the disc c is adjustably mounted on an interchangeable bracket g with the interposition of a movable wedge h. The surfaces of the bracket g and wedge hare fluted to prevent slipping. The inclination of the disc to the vertical may be adjusted by placing insertions between the wedge h and the bearing e and bracket g or by giving the wedge an oblique position. The plough has a sole i and a chilled cast sole piece k.
Patent GB-124625-A (GB)
Title: Improvements in Bobbin Strippers.
Inventor: COTTINGHAM ARTHUR HALLAM
IPC: B65H73/00
Filed: 1918-05-16
Abstract: 124,625. Cottingham, A. H. May 16, 1918. Bobbins &c., stripping waste from.-The bobbins are held by hand against a stripping-roller 8 covered with wire filletting. The roller 8 projects through the opening 7 of a casing 6 and the bobbin rests on adjustable bars 34, 35. The rear wall of the casing is provided with a flange 15. The waste is taken from the roller 8 by a second roller 9 beneath it, which rotates in the opposite direction and at a higher speed. The casing 6 is connected by a conduit 31 to a fan 30 on the main driving shaft 23. The upper roller 8 is carried in vertically adjustable bearings. The bobbins are contained in a trough 16 supported on brackets 17.
Patent GB-589769-A (GB)
Title: Improvements in or relating to the ring spinning of flax yarn
IPC: D01H7/52
Filed: 1945-04-03
Abstract: 589,769. Wet spinning of flax. TOMESCH, J. J. April 3, 1945, No. 8227. LClasses 120 (ii) and 120 (iii) ] The rings and travellers of a machine for the wet spinning of flax are maintained in a substantiallly dry condition, with consequent improvement in spinning tensions, by heating them with means (steam or like pipes) situated beneath the rings. As shown, a heating pipe 7 is connected to a steam supply pipe 8 and exhaust pipe 9 and partially surrounds each ring 2 of a ring rail. Alternatively, electric heating may be provided. The rotating bobbins are stated to act as weak fans to draw heated air upwards past the rings.
Patent GB-130712-A (GB)
Title: Improvements in and relating to the Production of Sulphuric Acid.
Inventor: QUINAN KENNETH BINGHAM
IPC: C01B17/82
Filed: 1918-05-17
Abstract: 130,712. Quinan, K. B. May 17, 1918. Sulphuric acid.-In the process of preparing sulphuric acid involving the use of nitric oxide, reactions between liquids and gases are brought about by distributing the liquid over perforated horizontal diaphragms through which the gas is passed. The reactions are effected in a series of vessels through which liquid flows from an inlet 22, Fig. 3, to an outlet 23 over a perforated diaphragm 21, below which gas is supplied by a pipe 20Y. The gas passes away bv an outlet 20<x>. In a complete plant, the gases produced by burning sulphur, pyrites, &c. are passed through a dust-separator and a tower down which weak denitrified acid flows. The gases are passed in succession through a series of reaction vessels 19, 19<a> - - 19<h>, Fig. 2, and are withdrawn by an exhauster 39. Acid from the washing-tower is pumped through a pipe 17 and supplied in parallel to the three last reaction vessels 19<f>, 19<g>, 19<h>. which discharge into a tank 32 to which nitric acid and water are added by pipe 45. The acid from the tank 32 is pumped into a tank 35 and supplied in parallel to the next vessels. 19<c>, 19<d>, 19<e>, which discharge through coolers 25<c>, 25<d>, 25<e> to a tank 29. The acid is supplied to the first vessels 19, 19<a>, 19<b> and passes through coolers to a tank 26, and thence to the washing-tower. Specifications 29568/12 and 28743/13 are referred to.
Patent GB-247421-A (GB)
Title: Improvements in yarn cutting mechanism for spinning, twisting and like frames
IPC: B65H54/71
Filed: 1925-03-28
Abstract: 247,421. Boyd, T. A., Boyd, H. A., Boyd, J., and Boyd, Ltd., J. & T. March 28, 1925. Thread-severing arrangements. - A device for cutting the yarns in spinning, twisting, and like frames comprises a rod 1 with notches 1<1>, 1<2>, and sharpened thimbles 2, 3 resiliently mounted in relation to each other. In the arrangement shown, the rod is adapted to serve two spindles and the thimbles are loosely mounted in supports 4, 5, the rod being supported by a spring 9 and moved longitudinally by means of a rod 7 to sever the yarn against the edges of the thimbles. In a modification the thimbles are supported in spring holders and the rod is adapted to serve a group of spindles. Specification 20943/06 is referred to.