baber/WOPTO huggingface dataset:
Patent GB-560022-A (GB)
Title: Method for reconditioning used solutizer solutions used in the refining of hydrocarbons
IPC: C10G19/08
Filed: 1942-05-26
Abstract: 560,022. Purifying alkali metal hydroxides. SHELL DEVELOPMENT CO. May 26, 1942, No. 7.118. Convention date, June 9,1941. [Class 1 (ii)] A process for removing resinous emulsifiers from aqueous alkali metal hydroxide solution which has been used to extract weak acids from a sour'hydrocarbon distillate and regenerated by steam stripping consists in contacting the solution with a flocculent solid to entrain the resinous emulsifier, and then separating the solid from the solution. Suitable flocculent solids are the hydroxides of magnesium, calcium, cadmium, copper, chromium, iron, and nickel, the carbonates or phosphates of the alkaline earth metals and lead, and the sulphides of calcium, 'barium, and lead. They may be preformed or formed in situ. The process is applicable to'the treatment of alkaline solutions containing organic solutizers so described in Specifications 494,450, 499,678, 503,644, 503,645, 506,574, 509,669, 527,509, 528,904, and 529,997, and 539,867 [Group IV].
Patent GB-765628-A (GB)
Title: Improvements in or relating to electrically driven windscreen wipers
IPC: B60S1/08
Filed: 1955-03-11
Abstract: 765,628. Windscreen cleaners. GENERAL MOTORS CORPORATION. March 11, 1955 [March 25. 1954], No. 7144/55. Class 138(1) [Also in Groups XXXV and XXXVII] An electric motor driving a windscreen wiper is supplied from battery 20 and has armature 10, series field winding 11 and shunt field winding 12. High-speed operation of the wiper is obtained when a bridging member 36 of a manual control switch is in the position shown, the shunt field excitation of the motor being reduced by means of resistor 37. Movement of the member 36 to an intermediate position disconnects the resistor 37 and provides low speed operation of the motor. In order to discontinue operation of the wiper, the member 36 is adjusted to its " parking " position and the motor will remain energized through contacts 42, 43, of a snapaction switch until a motor-actuated arm 46 opens these contacts and closes contacts 41, 42. This short-circuits the armature 10 and shunt field winding 12 for rapid braking action upon the motor, the series field winding 11 being excluded from the braking circuit. The arm 46 may be rotated to actuate contact 42 only when the wiper blades arrive at their stopping- position beyond their normal wiping stroke. Alternatively, the arm 46 may be driven in unison with the motor so as to operate the contact 42 cyclically, this cyclical operation having no effect upon the control of the motor until the member 36 is moved to its " parking" position. The driving motor may be of the two-pole type with the series field winding associated with a single pole and the shunt winding wound on both poles, Fig. 2 (not shown).
Patent GB-512626-A (GB)
Title: Improvements in or relating to sealing devices for use on doors or the like
IPC: E06B7/20
Filed: 1938-03-08
Abstract: 512,626. Draught - excluders for doors STEVENS, A. H. (Raysteel Specialties, Inc ). March 8, 1938, No. 7234. [Class 20 (iii)] The vertically-sliding draught-excluding strip 15 is actuated by rocking levers 25 mounted on hollow pivots 26, the pivots extending through the side walls 18, 19 of the casing in which the draught - excluder is mounted and also accommodating the screws by which the device is secured to a door. The sealing strip may consist of a length of sponge rubber 24 mounted in a holder 23, and the latter may have curved end pieces 24a for guiding purposes: The rocking levers shown have pin-and-dot connections with the strip and are pivoted to the spring-controlled bar 31, one end of which projects through the casing and is adapted to contact with a striker-plate on the door frame. In a modification, the levers are in the form of cams which bear against the upper surface of the strip, and pairs of mutually inclined springs are connected to the strip and to brackets in which the bar 31 slides.
Patent GB-549971-A (GB)
Title: Improvements in or relating to electro-magnetic relays
IPC: H01H51/32
Filed: 1941-06-11
Abstract: 549,971. Automatic exchange systems. STANDARD TELEPHONES & CABLES, LTD., NEWTON, F. E., and TOWNER, S. H. June 11, 1941, No. 7389. [Class 40 (iv) [Also in Group XXXVII] A circuit in which a uniselector is driven and at the same time impulses are sent over a line includes a relay having a vibrating reed armature (see Group XXXVI] The relay magnet V is normally energized by a circuit not shown and when this circuit is broken its armature is released and closes the "magnet springs" A. This allows a condenser 3 to discharge through a rectifier 1, the magnet V and the magnet springs A. The armature is re-attracted, opening the magnet springs whereupon the condenser is recharged from the battery B through a circuit including the uniselector magnet U and another rectifier 2. The relay magnet V is also deenergized and the cycle is repeated. The magnet also controls the loop springs L which close when the magnet springs open and vice versa.
Patent GB-1029625-A (GB)
Title: Suppression of undesirable oscillations in capacitative circuits
IPC: H02H9/00
Filed: 1963-02-25
Abstract: 1,029,625. Protective arrangements for series capacitor circuits. ALLMANNA SVENSKA ELEKTRISKA A.B. Feb. 25, 1963 [Feb. 26, 1962], No. 7407/63. Heading H2H. To suppress ferro-magnetic and asynchronous sub-harmonic oscillations which may arise in a phase 12 of a power line due to the presence of a series capacitor 11, an inductive member 13, a damping resistor 14 and a transformer having primary and secondary windings 15, 16 are connected as shown in Fig. la, so that, by suitable choice of the turns ratio of the transformer and the inductance of member 13 in relation to the capacitor 11, the voltage across the resistor 14 is virtually zero at normal operating frequency but becomes considerable at substantial deviations from this frequency. The windings 15, 16 may be connected to produce an auto-transformer effect, Fig. lb (not shown). Fig. 2a shows another arrangement which may be modified by connecting the resistor 24 across the secondary winding 26 or the primary winding 25, Figs. 2b and 2c (not shown), or by providing the transformer with a third winding across which the resistor is connected, Fig. 3 (not shown). Where the circuit configuration allows, the damping resistor may be provided by forming the winding with which it is associated from wire of relatively high resistivity. In cases where the inductive member is parallelconnected to the secondary winding, these two members may be built together so that a combined transformer and inductive member is obtained, Figs. 4a, 4b and 4c (not shown).
Patent GB-229127-A (GB)
Title: Improvements in or relating to loud speaking telephonic apparatus
IPC: H04R1/32
Filed: 1924-03-24
Abstract: 229,127. Graham, E. A. March 24, 1924. Loud-speakers.-The horn of a loud-speaking telephone receiver is connected to the base containing the receiver through means arranged to enable the horn to be moved into various positions without moving the base. The horn may be connected to the base by means of a series of metallic coupling rings constituting a flexible metal tube that can be bent into different positions and will remain in the bent position. In another form, Fig. 2, the cover a is provided with a cup-like member a<3> into which fits a part spherical member f which receives the lower end of the horn. To provide for greater movement, the spherical member f may carry a second cup member into which fits a second spherical member carrying the end of the horn. In a further modification, Fig. 4, a member k fits on the cover of the receiver and is formed with two connected passages k<2>, k<3> at right angles. The member k is adapted to turn about a vertical axis and the passage k<3> receives a junction piece m for the horn, which piece can rotate about a horizontal axis. Specifications 15369/15 and 191,801 are referred to.
Patent GB-806220-A (GB)
Title: Garments provided with detachable components
IPC: A41B3/04
Filed: 1957-03-07
Abstract: 806,220. Shirts &c. INGHIRAMI, F. March 7, 1957 [March 9, 1956, May 3, 1956, June 1, 1956, June 9, 1956, July 4, 1956], No. 7529/57. Class 141 [Also in Group XXV] Parts of garments, e.g. shirts and detachable collars and cuffs, are connected together by plastic strip fasteners 3, 4, interengaged by longitudinal sliding movement. The strip 3 is enclosed in a sheath 7 on the collar or cuff which can be turned back as at 7a to allow engagement of the strips 3, 4 and then restored to its normal position to prevent disengagement.
Patent GB-485501-A (GB)
Title: Improvements in or relating to packing means for eggs and similar articles
IPC: B65D85/32
Filed: 1937-03-15
Abstract: 485,501. Flats for eggs &c. RUEGENBERG, G. March 15, 1937, No. 7563. Convention date, March 20, 1936. [Class 18] [Also in Group XVI] Eggs &c. 4, Fig. 1, are packed in cells formed between superposed sheets 1, 2 of paper, each half of a cell being constituted by a spaced enlargement in a trough extending the length of a sheet and forming a ventilating duct open at both ends. The sheets are in contact throughout their length in one direction and are formed with transverse ribs 5, and the cells are staggered so that the contiguous sheets 1, 2 of adjacent layers are in intimate contact. The cells are formed by passing sheets between a pair of rollers one of which is provided with rotatable male moulds and the other with female moulds, and the pitch circle of the roller carrying the male moulds is less than that of the other. To " redress " or close the troughs somewhat, the embossed sheets are passed between rods 20, Fig. 5, on an endless chain 18 and a grill-shaped support 21.
Patent GB-992259-A (GB)
Title: Improvements in or relating to the electrodepositing of chromium
IPC: C25D3/04
Filed: 1962-02-27
Abstract: A chromium plating bath contains 100-500 g. per litre of CrO3, a sulphate ion and at least 1 g. per litre of lithium and preferably 2-4 g. per litre, which forms a crack-free plate. Preferably the bath also includes a catalyst ion consisting of silicofluoride, fluo-aluminate, fluo-titanate, or fluo-zirconate. The sulphate ion may be added as H3SO4 or as a soluble sulphate.  CrO3 may be added in the form of alkali metal or alkaline earth metal chromates or polychromates.  The composition is preferably (per litre) 200-400 g. CrO3, 1-2.5 each of sulphate ion and complex fluoride ion, and 2-4 g. lithium which may be added as metal, or as oxide, hydroxide, carbonate, or chromate.  Halides should be absent, or present in very limited amounts.  Specifications 771,925, 812,337, 812,338, 849,790 and 954,033 are referred to.
Patent GB-818429-A (GB)
Title: Improvements in or relating to multi-nip calenders
IPC: D21G1/00
Filed: 1957-03-07
Abstract: 818,429. Calenders of paper-making machines &c. BELOIT IRON WORKS. March 7, 1957 [March 13, 1956], No. 7607/57. Class 96. A multi-nip calender of a paper-making machine &c. has a driven king roller 11d and a stack of superposed rolls 14d, 17d, 36d... each with separate and independent bearings mounted on a frame 24d of the machine, and urged upwardly as by pneumatic pressure applied through diaphragms at 49d to the outer ends 21d of levers 45d pivoted at P and secured to the bearings 16d, 19d ... The pneumatic pressure thus applied may control the extent of bending of the king roller 11d under the calendering pressure, and such roller may be crowned to compensate partly or wholly for such bending, so that the paper web is under higher pressure in the middle, or under uniform pressure as the case may be. Links L permit lifting of all bearings for shut-down or repair.
Patent GB-1381592-A (GB)
Title: Heating of filaments
IPC: D02J13/00
Filed: 1971-03-23
Abstract: 1381592 Filament heater ERNEST SCRAGG & SONS Ltd 22 March 1972 [23 March 1971] 7662/71 Heading D1F Apparatus for heating artificial filaments e.g. during false-twist crimping, comprises a metal tube 10, curved along its length, through which heating fluid passes, a longitudinal groove 11 in the convex surface 12, and a baffle in the form of a metal rod 13 arranged to lie along the inside of the longitudinally concave surface of the tube remote from the groove to direct the flow of fluid against the inside of the convex surface to provide a substantially uniform temperature over the length of the tube. In a preferred embodiment, two parallel grooves 11 are provided in the convex surface. The baffle is preferably arranged to lie along the inside of the concave surface 14 by means of eccentric members fixed to each end of the rod. In a preferred embodiment, a plurality of such tubes are arranged in parallel between supply and return lines for the heating fluid, which may be mineral oil. The fluid is heated and recirculated, and a predetermined pressure drop is maintained between the supply and the recirculating means.
Patent GB-622410-A (GB)
Title: Improvements in electrical apparatus, such as a radio-receiver, comprising a cabinet with a separate scale
IPC: H03J1/04
Filed: 1947-03-20
Abstract: 622,410. Indicating-apparatus. PHILIPS LAMPS, Ltd. March 20, 1947, No. 7678. Convention date, June 27, 1944. [Class 106 (iv)] [Also in Group XL (c)] The scale mounted on top of a cabinet for electrical apparatus is made readily detachable, and the index may be folded back on the cabinet for convenience in packing. The Figure shows a transparent scale 1, projecting through a slot 3 in the upper wall, and held in position by a pair of resilient clamps 7 arranged inside the cabinet, stops 9 positioning the scale. An index 11 extending through slot 3, cooperates with the scale, and is attached to slider 13, moved by driving cord 15. The tension of the cord yields a component forcing the index 11, pivoted on rod 17, against the scale. Prior to packing the apparatus for transport, the scale is removed, and the index is collapsed against the wall 5 as shown in dotted lines.
Patent GB-269151-A (GB)
Title: Device for preparatory work in dental operations
IPC: A61C19/055
Filed: 1927-03-21
Abstract: 269,151. Danzebrink, J. April 12, 1926, [Convention date]. Void [Published under Sect. 91 of the Acts]. Dental engines.-The grinding or like tool used for preparing a tooth to receive a crown, inlay, bridge, &c. is positively guided so that it may be moved only in such a way that its working surface remains parallel to a given axis. In the form shown in Fig. 1 the milling tool o is mounted on an arm m hinged to an arm k which is hinged in turn to one side of a parallelogram formed of plates or wires a - - d hinged together at the corners. The parallelogram is rotatable about a spindle i. In a modification, Fig. 3, the tool carrying arm w is hinged to an arm v telescopically connected to a block u slidably connected to the spindle i by eyes u<1>. The eyes u<1> may be replaced by rollers engaging a spindle formed as a guide rail and the arm v may move on roller bearings. In a further modification, Fig. 6, an approximation to the desired restriction of movement is obtained by employing a comparatively long arm z turning about two spindles i, y at right angles. In any of the modifications a straight hand-piece carrying a milling disc may replace the right-angle holder for the tool o, fixed connections to the spindle i may replace the rotary connections, and the direction of the axis of the spindle i may be adjustable. The frame or arm supporting the tool may be fitted with a driving cord and pulleys to transmit motion to the tool from an electric motor mounted coaxially with the spindle i. The head of the patient may be held in a second guiding device permitting onlv similarly restricted movement and the two devices may be mechanically or electrically interconnected. The weight of the guiding devices may be counter-balanced.
Patent GB-453518-A (GB)
Title: Manufacture of cyclic ketones
IPC: C07C45/59
Filed: 1935-03-13
Abstract: Unsaturated cyclic ketones are obtained by eliminating water from lactones of aliphatic g -oxycarboxylic acids or from the acids themselves or the corresponding unsaturated acids.  The products have the same number of carbon atoms as the starting materials, and the reaction is believed to involve the conversion of the lactone ring, containing four carbon atoms and one oxygen atom, into an unsaturated ring containing five carbon atoms, the lactonic oxygen atom being eliminated.  When oxyacids or unsaturated acids are treated, they are believed first to undergo conversion into the lactone, which then reacts as indicated above. The elimination of water is effected by heating the starting material with a dehydrating catalyst.  Examples are given in which the following lactones are heated with an aluminium silicate to yield ketones having the same number of carbon atoms as the starting materials: a -heptyl-g -methylbutyrolactone, a -heptyl-g -ethylbutyrolactone, g  - n - amylbutyrolactone, g -heptylbutyrolactone, g -hexylbutyrolactone, g  - octylbutyrolactone, g  - nonylbutyrolactone, a -butyl-g -methyl(or ethyl)-butyrolactone, and a -amyl-g -methyl(or ethyl)-butyrolactone.  An example is given also in which butylallylacetic acid is heated with an aluminium silicate to yield a ketone identical with that obtained by subjecting a -butyl-g -methylbutyrolactone to the same treatment. The semicarbazones of some of the ketones are described.  Lactones.--a -Heptyl-g -methylbutyrolactone is prepared by treating the sodium compound of acetoacetic ester with heptyl p  bromide to yield heptylacetoacetic ester, condensing the sodium compound of the latter with allyl bromide to yield heptylallylacetoacetic ester, subjecting this compound to acid hydrolysis to yield allylheptylacetic acid, and treating this acid with sulphuric acid.  g -n-Amylbutyrolactone is prepared by condensing oenanthol with malonic acid, eliminating water and carbon dioxide from the product to yield a nonylenic acid, and treating the latter with sulphuric acid.  The other lactones specified are prepared analogously to one or other of the above. Butylallylacetic acid is prepared from aceto-acetic ester analogously to the heptylallylacetic acid mentioned above.
Patent GB-908834-A (GB)
Title: Stereophonic phonograph system
IPC: H04R3/04
Filed: 1959-03-06
Abstract: 908,834. Stereophonic sound-recording and reproducing circuits. RADIO CORPORATION OF AMERICA. March 6, 1959 [March 14, 1958], No. 7940/59. Class 40 (4). A two-channel amplifier provides a selective frequency response for those components in both channels which are in phase, i.e. provide a push-pull input, while the components which are out of phase, i.e. provide a balanced input, are not given the frequency response. Alternatively, the out of phase components may be given the frequency response while the inphase components are not. The amplifier is used to drive a cutting stylus for stereophonic recording of two signals at 45 degrees on each side of the vertical so as to attenuate high and low-frequencies contributing to vertical motion of the stylus which may give rise to tracking problems and distortion. The amplifier may also be used to reproduce such a recording to remove distortion in the vertical motion of the stylus due to turn-table rumble and poor recording at high frequencies. A pick-up for a 45-45 cut record is shown in Fig. 1 and has bender piezo-electric elements 10 and 12, which may be of barium titanate ceramic, set in damping blocks 14 and 16 and is such that vertical motion of the stylus 34 produces outof-phase voltages across the terminals 28, 30, and 30, 32; lateral motion of the stylus producing in-phase voltages. Representing the piezo-electric transducers as generators in series with capacitors these voltages are shown applied to the amplifier in Fig. 2. An impedance Z, which may be a capacitor or an inductor, or both in series, is in circuit with the out-of-phase input components derived from vertical motion of the stylus but not in circuit for the in-phase components derived from lateral motion of the stylus. By this means the low or high-frequencies, or both, are attenuated. If the impedance Z is replaced by a shortcircuit and the common cathode circuit is given resistance decoupled by capacitance to earth, negative feed-back provides low-frequency attenuation for the out-of-phase components. By providing further RC decoupling to the high tension supply +B the high-frequencies in outof-phase components are attenuated. If transformer coupling is used between the output of tubes 40, 44, and loud-speakers, the impedance Z may be placed as a common limb in the coupling circuits (see Fig. 5, not shown). If the connections from the pick-up are altered so as to provide in-phase components for the amplifier input, the circuit of Fig. 6, may be used with a single shunt resistor 90 to couple the two channels while the barium titanate transducers inherently attenuate high and low-frequencies as their capacities vary with frequency. Alternatively, the resistor 9 may be replaced by a damped parallel LC network. In all the embodiments the amplifier may have more than one stage with attenuation provided in one or more of the stages.
Patent GB-1378688-A (GB)
Title: Nitrogen containing catbon
IPC: C01B31/00
Filed: 1972-02-21
Abstract: 1378688 Modified carbon SIEMENS AG 21 Feb 1972 [22 Feb 1971] 7953/72 Heading C1A [Also in Divisions C5 and H1] A nitrogen-containing carbon is obtained by dissolving a carbonizable nitrogen-containing organic polymer in a concentrated solution or a melt of an inorganic acid salt and thereafter carbonizing by heating at a temperature of from 700 to 1200 C. The polymer used may be polyacrylonitrile, a protein, albumin, or polyethylene imine. The salt used may be a metal halide, or an ammonium halide, or a metal or ammonium thiocyanate. The metal salt may be that of zinc, iron, or an alkali metal. The solvent used may be aqueous or organic, e.g. dimethyl formamide. The weights of polymer and salt used may be in the ratio of 1 : 1 to 1 : 10 and a nitrogen compound additional to the polymer may be added to the melt or salt solution to increase the nitrogen content of the product. The compound may be for example, melamine, urea, uratropin, or ammonia. The carbonization may be effected in a nitrogen atmosphere, and the product may be after treated in an atmosphere of ammonia. The product may be used as an electrode in an electrochemical cell.
Patent GB-160168-A (GB)
Title: A process and apparatus for the manufacture of glass-nozzles for the spinning of artificial fibres, horse-hair, straw and the like
IPC: D01D4/02
Filed: 1921-03-14
Abstract: 160,168. Kõmpf, A., (Assignee of Kopf, R. S.). March 12, 1920, [Convention date]. Perforating; forming articles with metal skeletons. - Relates to the manufacture of glass nozzles perforated with a number of fine holes for the manufacture of artificial fibres. Capillary glass tubes B, containing fine wires, are packed into a glass tube T which is exhausted and then heated progressively in a rotary furnace A until the glass collapses and forms a solid block embedding the wires. After cooling the mass is cut into discs and the wires removed chemically.