baber/WOPTO huggingface dataset:
Patent GB-761786-A (GB)
Title: Improvements relating to the recovery of zinc sulphate from solutions containing zinc sulphate and magnesium sulphate
Inventor: SHARPLES EDWIN HOLROYD
IPC: C01G9/06
Filed: 1954-01-06
Abstract: Zinc sulphate is recovered from solutions containing zinc and magnesium sulphates by adding powdered calcium carbonate and heating the solution to 65-95 DEG C. to precipitate zinc as basic carbonate, which precipitate is removed and dissolved in sulphuric acid to produce zinc sulphate solution free from magnesium sulphate the initial sulphate solution may be obtained from sulphuric acid solutions of effluent muds containing zinc and magnesium hydroxide and calcium sulphate, produced by treating spent liquid from viscose coagulating and hot stretching baths with lime, according to an example, an effluent mud was treated with spent hot stretching bath acid containing sulphuric acid and zinc sulphate.  Ferrous iron was oxidized with chlorine, sodium hypochlorite or diebromate and the ferric iron precipitated with powdered chalk.  The resulting slurry of calcium sulphate containing zinc and magnesium sulphates in solution was filtered and the solution reacted with powdered chalk at 80-95 DEG C. while passing steam into the liquid.  The basic zinc carbonate precipitate was separated and treated with sulphuric acid such as that obtained as canal liquor.  The solution of zinc sulphate was filtered from the residue.  Specifications 467,500 [Group IV] and 678,462 are referred to.
Patent GB-577458-A (GB)
Title: Improvements in and relating to radio signalling means
IPC: G01S1/02
Filed: 1941-01-10
Abstract: 577,458. Directive wireless signalling. HUGHES & SON, Ltd., H., BECK, A. H. W., and HUGHES, A. J. Jan. 10, 1941, No. 391. [Class 40 (v)] A homing beam for aircraft comprises a main beam a radiated by a horn b<1> or other directional antenna. In front of the horn are placed one or more discharge tubes d<1>, d<2>, arranged with their longitudinal axes at right angles to the plane of polarization of the main beam. The discharge tubes are energized by a D.C. voltage to maintain the discharge, and an alternating voltage to introduce a characteristic modulation. This produces one or more modulated beams c, c' in the central zone of the main beam a.
Patent GB-1206013-A (GB)
Title: Magnetic slave compass with an alarm device
IPC: G01C17/36
Filed: 1968-01-03
Abstract: 1,206,013. Magnetic amplifier circuits. N1- EUWE ROTTERDAMSCHE INSTRUMENTFABRIEK OBSERVATOR N.V. 3 Jan., 1968 [6 Jan., 1967], No. 405/68. Heading H3B. [Also in Divisions G1 and H2] In the remote indication of a flux-gate compass the double frequency output from the rotor coil 4 (Fig. 1) of a slave member is amplified in a magnetic amplifier 5 and used to energize an induction motor 6, fed with the single frequency voltage on its reference winding 7, to drive the rotor and reduce the output from coil 4 to zero. The double frequency signal from coil 4 is amplified by transistor T 1  (Fig. 6) and fed to the control windings 27, 28 of transductor TD 2 , and control windings 29, 30 of transductor TD 3 , the pairs of windings being connected in series and wound in opposite directions on the cores of the transductors. The main windings 31-34 of the transductors are connected via diodes 35-38 to one terminal of the single frequency A.C. supply and via the field windings 8, 9 of the motor 6 to the other terminal. The circuit is arranged so that for zero input signal the outputs from the two transductors are equal, and the resultant torque on motor 6 from the currents in windings 8; 9 is zero. When a signal is developed in coil 4, the point in the half-cycles at which the cores of the transductors saturate is varied, so that the outputs are unequal, an input signal of one phase-sense causing the output from transductor TD 2  to increase and that from transductor TD 3  to decrease, and vice versa. This determines the direction of rotation of motor 6, to restore coil 4 to alignment with the direction of the resultant field produced by the stator coils 3.
Patent GB-1096781-A (GB)
Title: Improvements in refrigeration
IPC: F25J1/00
Filed: 1965-01-05
Abstract: 1,096,781. Refrigerating; gas liquefaction processes. AIR PRODUCTS & CHEMICALS Inc. Jan. 5, 1965 [Jan. 16, 1964], No. 409/65. Addition to 1,089,192. Headings F4H and F4P In a refrigeration process gas is passed through two heat-exchange zones in parallel, a portion of the gas is withdrawn from an intermediate point in one zone and merged with the gas leaving the other zone, the merged gases are expanded with the production of work and all of the expanded gas is passed through said one heat exchange zone. As shown, fluid, e.g. air, from a compressor discharge line 7 is divided into two streams 9 and 11 of which the former is cooled in a heat exchanger 13 then adiabatically expanded through valve 15 while the latter stream is cooled by an external refrigerating circuit 21 in heat exchanger 19, merged with a portion of stream 9 drawn from between the ends of exchanger 13 through line 29 and then expanded in a reciprocating engine 31. The stream from valve 15 is forwarded to a separator 17 from which vapour leaves through line 37 to rejoin the outlet stream from engine 31 in line 33, the combined stream being returned via line 35 and heat exchanger 13 to compressor 5. The liquid from separator 17 is either supplied through line 41 to a storage vessel 43 or through line 35 to cool a load 49, the vapour from vessel 43 being returned to compressor 5 via lines 47 and 35. Make-up fluid is added to the system through line 1. In a modification (Fig. 5, not shown), a third stream which traverses an auxiliary heat exchanger is provided in parallel with streams 9 and 11, part of this stream being withdrawn from the auxiliary heat exchanger and supplied to the upstream side of the expansion engine. The engine outlet stream and the vapour from separator 17 are then used to cool the auxiliary heat exchanger while the liquid from the separator is passed through a cooler then expanded through a valve into a second separator from which the vapour is used to cool said cooler and heat exchanger 13 and the liquid to supply the storage vessel or load. In a further modification (Fig. 6, not shown) the load of the system comprises a condenser for oxygen vapour from the bottom of the low pressure stage of a rectification column while the vapour from the vessel 43 is in part used to cool incoming air for the rectification column. The incoming air is also cooled by gaseous nitrogen from the low pressure stage and the inter-stage condenser of the column, the nitrogen from the condenser having previously been expanded in a turbine. In another embodiment (Fig. 7, not shown), the adiabatically expanded air is combined with part of the air from the outlet of the expansion engine and introduced into a two-stage rectification column for separation into gaseous oxygen and nitrogen which are used to cool the air to be adiabatically expanded. The remainder of the engine outlet stream is also used to cool the last-mentioned air.
Patent GB-880527-A (GB)
Title: Improvements in or relating to apparatus for use in drawing liquid from two sources and for dispensing a mixture of the liquids drawn
Inventor: HORSBURGH PETER BREMNER
IPC: B01F5/04
Filed: 1958-01-06
Abstract: 880,527. Reciprocating pumps. HORSBURGH, P. B. Sept. 10, 1958 [Jan. 6, 1958], No. 445/58. Class 102(1). [Also in Group XVIII] A chamber 18 is connected at its lower end to a pipe leading to a beer barrel and at the upper end to a beer pump. Intermediate the ends the chamber communicates through a cock 23 with a flexible pipe having at the other end, an inlet valve and filter 7 which can be lowered into a container.
Patent GB-231253-A (GB)
Title: Improvements in fluid pressure engines for operating railway carriage doors and for other purposes
IPC: B61D19/02
Filed: 1924-01-07
Abstract: 231,253. Baker, W. S. Graff-. Jan. 7, 1924. Tandem-cylinder engines for operating railway carriage doors and for other purposes comprises end-on and communicating cylinders 1, 2 with connected differential pistons 4, 5 and a dividing wall 9 through the stuffing-box of which passes a piston-rod 6, a control valve or valves 13, 14 being provided in the by-pass passage 11. When pressure fluid is admitted at 12 to the space between the pistons and the port 7 is open to exhaust the pistons are shifted to the left and a movable member such as a door-operating shaft is rotated through rack-gearing 8. This movement is reversed when pressure fluid is admitted at 7 at the same or any pressure greater than that existing between the pistons.
Patent GB-795647-A (GB)
Title: Improvements in or relating to plain bearings
Inventor: LOVE PHIL PRINCE
IPC: F16C33/10
Filed: 1957-01-04
Abstract: 795,647. Connecting-rod bearings. GLACIER METAL CO., Ltd. Jan. 4, 1957, No. 488/57. Addition to 744,287. Class 12 (1). In a modification of the connecting-rod bigend bearing described in the parent Specification, areas 14, 17 of the bearing surface approximately opposite to the recesses 4, 6 are recessed or relieved so as to permit escape of oil therefrom and thus prevent the building up of substantial oil pressure tending to reduce the clearance and hence the thickness of the oil film formed in the oil recesses 4, 6 and carried forward into the heavily-loaded region. The recesses 14, 17 are formed on each side of the slots 9, 10, respectively, each extending through an angle, at the bearing axis, of between 10 and 40 degrees and decreasing progressively from a depth of about 0.005 inches at the joint face 15 to the opposite end 16 of the recess. Each pair of recesses may be interconnected by another recess.
Patent GB-724903-A (GB)
Title: Improvements in or relating to measuring devices for low electric currents
IPC: G01T7/12
Filed: 1953-01-07
Abstract: 724,903. Electric tests. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Jan. 7, 1953 [Jan. 10, 1952], No. 511/53. Class 37. [Also in Groups XXXVII and XL (b)] In apparatus for measuring a weak direct current from, e.g., an ionization chamber by a dynamic electrometer, when the pointer of the indicating instrument touches an adjustably fixed contact a further valve causes the meter current to increase so that the contact pressure is increased and the contacts are maintained closed. As shown, the current from an ionization chamber 1 produces a voltage drop across a resistor 4 which is converted to A.C. by electrodynamic vibrator 6 and amplified at 9, the output current after rectification passing through the coil 16 of a meter 17. At a given level the pointer 22 touches a fixed contact to apply negative bias to a valve 28, whereupon the anode current falls, the anode voltage rises, and an increased current is sent through the meter winding 16 from the junction of resistors 34, 35 to increase the pressure of the pointer 22 on the stationary contact, the resulting reduction in contact resistance increasing the negative bias on valve 28 and further reducing the anode current until a relay winding 31 in the anode circuit releases to close contact 36 thereby connecting the junction 34, 35 to H.T. positive at terminal 37. A further contact 38 of relay 31 operates a signalling device 39 or a radiation-control circuit.
Patent GB-718799-A (GB)
Title: Improvements in or relating to contact banks used in automatic telephone systems or the like
IPC: H01H63/06
Filed: 1953-01-07
Abstract: 718,799. Automatic exchange switches. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Jan. 7, 1953, [Jan. 10, 1952], No. 512/53. Class 40 (4). In a constructional unit for a contact bank consisting of a flat block 10 of insulating material, e.g. polystyrene, accommodating a number of parallel contact strips 11 projecting from one edge of the plate to form wiper contacts and multipling wires 21 at right angles to the contact strips, one edge of each of the contact strips 11 is flush with the base of the block 10 and the other edge projects into a central recess 17 in the block, the recess being traversed by projecting ribs 18 between adjacent contact strips 11 and serving to support the multipling wires 21 which are bent downwards where necessary for connection to the contact strips. The block 10 is moulded round the contact strips 11 which are apertured to strengthen the block. The multipling wires 21 lie in slots 22 in the ribs 18 and in slots 24 in the strips 11 to which they are connected, the edges of the slots 22, 24 being riveted over.
Patent GB-379602-A (GB)
Title: Improvements in or relating to the manufacture of biscuits, cookies and the like baked goods
IPC: A21B5/02
Filed: 1932-01-08
Abstract: A biscuit, cookie, or the like baked article is composed of a number of separate layers of dough of similar mixture, the dough of one layer having been worked to a greater extent than the dough of another layer, e.g. the reticulate sheet left after biscuits &c. have been stamped out from a sheet of dough may be passed through a sheeting apparatus and applied as a separate layer to a layer of dough, which has been sheeted only once, to form a composite sheet from which the biscuits are cut.
Patent GB-213354-A (GB)
Title: Improvements relating to the sulphide toning or intensifying of photographic images
IPC: G03C5/46
Filed: 1923-01-08
Abstract: 213,354. Shaw, W. S. Jan. 8, 1923. Intensifying; toning. - Photographic images are intensified or sulphide toned in one operation at ordinary temperatures (say 50‹-60‹ F.) by using a solution containing sodium, barium, or other suitable sulphide, and an organic nitrocompound to convert the silver image into one consisting mainly of silver sulphide. Examples of nitro-compounds used are nitro-benzene, mchlor-nitro-benzene, p-nitro-benzyl-alcohol, mnitro-acetanilide, p-nitro-phenetol, or sodium or other suitable salts of m-nitro-benzene-sulphonic acid, p-nitro-benzoic acid, picramic acid, picric acid, p-nitro-phenol, or 2-4-dinitro-phenol. An increase in solubility in the case of some sparingly soluble nitro-compounds is obtained by adding acetone, alcohol, or the like to the solution, and in the case of calcium sulphide by adding ammonium chloride.
Patent GB-374800-A (GB)
Title: Improvements in steam generating systems
IPC: F22B29/02
Filed: 1932-01-08
Abstract: 374,800. Water-tube steam boilers. BABCOCK & WILCOX, Ltd., Babcock House, Farringdon Street, London.-(Babcock & Wilcox Co.; 85, Liberty Street, New York, U.S.A.). Jan. 8, 1932, No. 645. [Classes 123 (ii) and 123 (iii).] Wet steam from a continuous tube boiler 7 discharges into a separator 11, in which the separated water is heated to generate fresh steam by steam from a superheater 28, as described in Specification 349,826, and water is circulated in a closed circuit through the boiler by the feed pump 4 which is connected on its inlet side to the water space of the separator by a pipe 12. Fresh feed is supplied by a pump 1 through a valve 2 controlled by a float 13 in the separator. Steam is drawn from the separator and forced through the superheater by a pump 22. A thermostat 36 in he superheater outlet header controls a valve 32 in the pipe 33 conducting superheated steam into the water-space of the separator. The air and fuel supplies to the burner 41 are controlled by devices operated by the boiler pressure communicated through a pipe 38.
Patent GB-693780-A (GB)
Title: Process for the preparation of alpha manganese dioxide
IPC: C01G45/02
Filed: 1951-01-10
Abstract: Alpha manganese dioxide, for use as a depolarizer in dry cells, is prepared by heating manganese dioxide which is amorphous to X-rays, e.g. the mud obtained by the alkaline oxidation of organic compounds with a permanganate or gamma-manganese dioxide with a mineral acid, e.g. sulphuric or nitric, of 50-100 per cent strength at 70-120 DEG C for a period, e.g. 1/2 -1 hour such that substantially only alpha manganese dioxide is formed, removing the acid, washing and drying.
Patent GB-429204-A (GB)
Title: Improvements in and relating to detachable handles for plates and the like
IPC: A47J45/10
Filed: 1934-01-09
Abstract: 429,204. Handles for plates &c. LINDOP, R. S., Trafalgar Works, Trafalgar Street, Hanley, Stoke-on-Trent. Jan. 9, 1934, No. 759. [Class 128] [See also Groups XVII and XXII] A handle for a plate or other shallow vessel consists of a metal strip formed at each end with an incision or cut-out portion, the resulting forks being formed, as by bending and splaying, into spaced apart pairs of hooks, and the strip being bent into an arcuate or substantially semi. circular shape. As shown the hooks 11 are doubly bent at 12. The handle may be of brass, and may be nickel and chromium plated.
Patent GB-211451-A (GB)
Title: Improvements in and relating to speed regulators for electric converters
IPC: H02K47/04
Filed: 1924-01-10
Abstract: 211,451. Lorenz Akt.-Ges., C. Feb. 17, 1923, [Convention date]. Speed. maintaining systems. - Constant speed regulation of a motor driving a gener ator in a converter set is obtained by causing a centrifugal contact device k to vary the field of an auxiliary dynamo d which varies the field of the motor m in an augmented ratio. The auxiliary dynamo may be separately driven, as shown, or may be coupled to the main motor shaft. The invention is applicable both to direct-current and to alternating-current motors.
Patent GB-1336641-A (GB)
Title: Adhesive compositions
IPC: C08L51/02
Filed: 1971-01-07
Abstract: 1336641 Polymer emulsion adhesives KAO SOAP CO Ltd 7 Jan 1971 [5 March 1970] 791/71 Heading C3P [Also in Division B5] Adhesive compositions comprise a mixture of (1) an aqueous solution of a normally water insoluble high M.W. vinyl polymer, obtained by dissolving in water containing a resin and anionic surfactant a water-insoluble high M.W. vinyl polymer having a degree of polymerization of 10-3000 and selected from polyvinylacetate, copoly (vinylacetate/butylacrylate/acrylic acid), polyvinylbutyral, poly (C 1-8  alkyl) acrylates, copoly (ethylacrylate/2-ethylhexylacrylate). or copoly (ethylene/vinylacetate), the weight ratio of polymer to surfactant being 10 : 100 to 100 : 10, and (2) an emulsion of a film-forming vinyl polymer having a degree of polymerization of at least 100, being a polymer of vinyl acetate, vinyl chloride, ethylene, styrene, C 1-4  alkyl acrylates and methacrylates, copoly (ethylene/ vinyl acetate), copoly (vinylacetate/butyl acrylate/acrylic acid), and copoly (vinyl acetate/ ethyl acrylate), the weight ratio of polymer plus surfactant in (1) to polymer in (2) being in the range 10-100 : 100. The surfactant may be, for example, an alkali metal salt of a resin acid or a maleic acid adduct thereof, an alkali metal salt of rosin or a maleic acid adduct thereof, or an alkali metal salt of disproportionated, hydrogenated or polymerized rosin.
Patent GB-304233-A (GB)
IPC: B27L11/02
Filed: 1929-01-09
Abstract: 304,233. Magnet-Werk Ges. Eisenach Spezialfabrik f³r Elektromagnet- Apparate. Jan. 17, 1928, [Convention date]. Conical mills; casings or drums having internal revolving cutters or knives.-Wood is disintegrated between a bell-shaped rotor 3 provided with ribs 10 lying substantially in planes passing through the axis of the body and a stator 1 provided with internal ribs 9, the disintegration being carried out in three zones 13, 14 and 15 of varying shape. One or more ribs 16 extend upwardly from the top of the rotor toward the feed inlet and constitute the means for initially breaking the waste wood into sizes suitable for passage through the machine. The wood may be subsequently ground between. a pair of annular rings 28, 31 having co-operating ribs 29, 30 respectively, the parts 31 consisting of renewable sectors; these grinding rings may form a separate machine. The Specification as open to inspection under Sect. 91 (3) (a) comprises a modified construction in which a cylinder 1, Fig. 1 (Cancelled) is provided with internal ribs 9 which may be attached to a lining 1<b>, and a rotor 3, provided with ribs 10 revolves inside the casing. The rotor is mounted in bearings 2, 4 and is driven by gear wheels 24, 25 through a shaft 26. The ribs on the rotor may be formed on annular members 10<a>, 10<b>, which are secured to the rotor by a cap 12. The ribs on the member 10<a> are spaced with a small clearance from the rib 9 but the ribs on the member 10<b> diverge from the sides and are continued onto the cap 12. A second disintegrating stage comprising a narrow annular ring 27 with teeth 29 may form a. single unit with, and be situated at the bottom of, the rotor and a corresponding segmental ring 30 on the cylinder is in grinding relation therewith. The Specification as open to inspection also comprises the following subject-matter which is the subject of Specification 311,386. The top of the cylinder is provided with a hopper 17, Fig. 1, (Cancelled), in which is a spider 8 for carrying the top bearing and a ledge 18 which forms an abutment for wood scrap such as A. One rib 16 on the rotor is prolonged upwards to form an impact member which breaks the scrap against the spider. The coarse particles of wood fall into the cylinder and are gradually reduced as they pass along until a finely disintegrated product falls from the grinding rings 27, 30 into the discharge opening 6. The final product may then be ground in known manner to form a pulp. The Specification as open to inspection also comprises the follow subject-matter which is the subject of Specification 326,708. The mill may be placed horizontally, Fig. 4 (Cancelled), and is fed through an opening 17a, the final grinding rings 29<a>, 31a being flat or conical and formed with knobs 30a, Fig. 6 (Cancelled). The subjectmatter described with reference to Figs. 1 (Cancelled), 4 (Cancelled), 6 (Cancelled), does not appear in the 'Specification as accepted.
Patent GB-1487132-A (GB)
Title: Panel for use in constructing ornamental ceilings and partition walls
IPC: E04B9/34
Filed: 1975-01-08
Abstract: 1487132 Ornamental panel TAJIMA METALWORK Ltd 8 Jan 1975 [7 Aug 1974] 842/75 Heading E1W  A polygonal panel 1 comprises a plurality of units 2 joined by integral connectors 3, there being part connectors 5 on some sides A, A' and complementary part connectors 7 on the other sides B, B' of the panel 1, and at each corner fractional portions 9 of connectors 3, whereby assembled panels form an unbroken pattern of rings 2 and connectors 3. One of the complementary part connectors 7 has a threaded hole for a screw and the other a clearance hole. The fractional portions 9 of connectors at the corners have grooves which when passed are assembled forms a hole for a screw. The panels may be supported from hangers 24 and a vertically, and horizontally adjustable arrangement 27, 29, 30. A cruciform reinforcement member 13 may be attached at the junction of four panel corners.
Patent GB-209757-A (GB)
Title: Improvements in the manufacture of zinc sulphide
IPC: C01G9/08
Filed: 1924-01-11
Abstract: The Specification as open to inspection under Sect. 91 (3) (a), contains the following matter which does not appear in the Specification as accepted.  A zinc salt, such as zinc sulphate, is heated in a closed oven into which is passed sulphuretted hydrogen alone or with sulphur dioxide at a temperature of from 250 DEG  C. to a red heat, the products being zinc sulphide in an amorphous, semi-crystalline or crystalline condition, and sulphur dioxide with or without sulphur.  The materials used are not dried.ALSO:Solid zinc sulphate is heated in a closed oven into which is passed sulphuretted hydrogen alone or with sulphur dioxide at a red heat, the products being zinc sulphide in a amorphous or crystalline condition, and sulphur.  The materials used not dried.  The Specification as open to inspection under Sect. 91 (3) (a) states that the temperature may be from 250 DEG  C. to a red heat; that other zinc salts than the sulphate may be employed; and that sulphur dioxide may be a product. The sulphuretted hydrogen may be obtained by the reaction of sulphuric acid on sodium sulphide, the sodium sulphate being converted into sulphide by heating with carbon, and the sulphuric acid required may be manufactured from the sulphur dioxide produced. This subject-matter does not appear in the Specification as accepted.