baber/WOPTO huggingface dataset:
Patent GB-624005-A (GB)
Title: Transmission wave filter
IPC: H03H7/075
Filed: 1946-07-31
Abstract: 624,005. Impedance networks. STANDARD TELEPHONES & CABLES, Ltd. July 31, 1946, No. 22821. Convention date, July 31, 1945. [Class 40 (viii)] A classical ladder network is transformed in order to. eliminate some of the impedance elements without altering the characteristics of the network by substituting imaginary transformers between the sections, converting these intoT or TT sections as described in Specification 243,321, [Class 40 (v)], and then adding impedances in parallel in the resulting network, the negative sign of some of these in the transformation rendering it possible to arrange that one element in each section shall be zero. As shown in Fig. 23, transformers k1, k2, &c. are inserted in the network of Fig. 22. These are converted as above into network sections producing the result of Fig. 24. If the shunt and series arms are combined, a network similar to Fig. 22 is obtained, but the transformation equations gives sufficient freedom to permit one inductance or capacity to be arbitrarily chosen as zero while still giving practical values for the other components.
Patent GB-1087824-A (GB)
Title: Improvements in or relating to the control of passive tank stabilizers
Inventor: BELL JOHN
IPC: B63B39/03
Filed: 1965-05-28
Abstract: 1,087,824. Stabilizing ships. MUIRHEAD & CO. Ltd. May 18, 1966 [May 28, 1965; Oct. 14, 1965], Nos. 22888/65 and 43689/65. Heading B7M. A passive tank stabilizing system for a floating body comprises a tank disposed on each side of the body, at least one interconnecting channel for the flow of liquid between the tanks, at least one pipe or channel interconnecting the tops of the tanks, roll-sensitive means, and control/non-return valve means in the pipe or channel responsive to the roll-sensitive means to permit flow of air through the pipe or channel in the direction required for stabilizing the body and to prevent flow in the opposite direction. In one embodiment (Fig. 2, not shown) the air channel contains a single valve (20a) which acts as a control valve permitting flow in one direction only. In the embodiment of Fig. 1 the air channel 5 contains valves 6, 7 normally closed under gravity and preventing flow of air down into the tanks 1, 2 but operable in turn by rods 10, 11 on the ends of a lever turned by a roll-sensing means. In the case of a tanker where the side tanks 1, 2 form part of the tank system, the connecting channel between them is difficult to clean as it is relatively small and hence the tanks may be filled with water 3a to above the channel and then with oil 3.
Patent GB-1002423-A (GB)
Title: Improvements in electro-magnetic probes
Inventor: WALTON JOHN HUGH DAVEY
IPC: G01V3/10
Filed: 1962-06-14
Abstract: 1,002,423. Locating magnetic or conducting bodies. MEC-TEST Ltd. June 11,1963 [June 14, 1962], No. 22904/62. Heading G1N. A probe for the detection of metal articles comprises two like search coils 100,102 consisting of inner and outer coaxial conductors formed as loops disposed in closely related parallel planes, the inner conductors being connected in series and the outer conductors being connected in series, and either the two inners or the two outers being connected in opposition, one series pair being connected to a source of alternating or pulsating current 108 and the other pair to detecting means 112 through a variable mutual inductance 110,114,116. The substitution of coaxial search coils in a system described in Specification 855,991 is illustrated in Fig. 2 ( not shown) and the use of the apparatus for counting vehicles is referred to. The mutual inductance may alternatively comprise two secondaries and one primary.
Patent GB-517596-A (GB)
Title: Improvements in or relating to medicinal air pumps
IPC: A61M16/00
Filed: 1938-08-04
Abstract: 517,596. Air pumps. PONGRACZ, A. J. Aug. 4, 1938, No. 23048. [Class 8 (i)] [Also in Group XXXV] A reciprocating air pump 7 is driven by an electric motor 2 through a crank 4 and connecting rod 5. On the motor shaft 3 is mounted a fan 25 which supplies cooling air to the motor and also to the adjustable resistances 13, 14 which are situated in the upper part of the motor casing. These resistances enable the motor to be energized from electric mains having different voltages. Reference has been directed by the Comptroller to Specifications 436,094, 437,112, [both in Group XXXV], and U.S.A. Specification 1,928,965.
Patent GB-1510931-A (GB)
Title: Jumper spring
IPC: G04B11/04
Filed: 1976-06-04
Abstract: 1510931 Timepieces DAINI SEIKOSHA KK 4 June 1976 [4 June 1975] 23208/76 Heading G3T [Also in Division C7]  A jumper spring g for holding the seconds wheel of a timepiece has its operative portion g<SP>1</SP> coated by sputtering with a material which is hard or has a low coefficient of friction. The spring described is of phosphor bronze which is nickel plated before sputtering a layer f of chromium and a hard layer e, for example of Al 2 O 3 , TiC or SiC or of a cemented carbide alloy. Alternatively the layer e may be of MoS2 to give a coefficient of friction to steel of less than À05.
Patent GB-735216-A (GB)
Title: Improvements in or relating to the production of bis(hydroxyaryl) substituted alkanes
IPC: C07C37/20
Filed: 1953-08-24
Abstract: The invention comprises a method of making bis-hydroxyaryl-alkanes, especially diphenylol propane, by the reaction between phenolic and carbonyl compounds in acidic medium in which the ratio of phenol to carbonyl compound is at least 10 : 1, and preferably 12 to 15 : 1, with or without mercaptans as additional catalysts, and continuously, if desired, preferably in two consecutive vessels.  In an example a charge containing proportions of phenol and acetone of from 10 to 20 : 1 and a quantity of methyl mercaptan and hydrogen chloride was continuously treated at various temperatures in one or two reaction chambers, for various periods of time and the yields of diphenylol propane compared in a table.  Specification 735,215 is referred to.
Patent GB-211522-A (GB)
Title: Improvements in or relating to devices for manipulating explosive charges, detonators or the like
IPC: F42D1/04
Filed: 1922-08-28
Abstract: 211,522. Price, A., Pryse, W., and Price, Pryse, & Co., Ltd. Aug. 28, 1922. Convertible into blasting appliances; ferrules or tips. - Relates to a tool for manipulating explosive charges, detonators &c. comprising a tube a with grooved handle b extending to one or both sides and a removable rod f slidable within the tube and provided with a pivoted part h adapted to be moved into the handle groove and locked therein by a rotatable shield c to hold the rod in a partly withdrawn position. The other end of the rod has a longitudinal groove and a slot f<2> in engagement with a detachable point when the tool is in normal use, which point may be replaced by a ferrule j<1> engaging the end of the tube when the pivoted rod portion is locked in the handle; the device may then be used as a walking stick. The handle may be attached to the tube by a forked memmber. Specification 7651/11, [Class 68 (i), Excavating earth &c.], is referred to.
Patent GB-296432-A (GB)
Title: Improvements in or relating to circuit-arrangements for operating an electric discharge tube with direct current
IPC: H05B41/19
Filed: 1928-08-13
Abstract: 296,432. Naamlooze Vennootschap Philips' Gloeilampenfabrieken. Sept. 2, 1927, [Convention date]. Vacuum tubes.-.k gas discharge tube has an incandescent filament cathode fed from the same source of continuous current as the anode, and an inductance or choke coil is included in the circuit of the tube so as to produce a starting impulse when the filament circuit is broken. As shown a coil 5 is connected through a resistance 4 with the anode 3, and the filament 2 is connected through a switch 8 with a tapping on the resistance so that a part of the resistance is included in the filament circuit. At starting the filament is heated and the switch 8 is opened so that the coil produces a voltage impulse. In a modification, one or more auxiliary electrodes are mounted in the tube, the circuits of the filament and auxiliary electrodes being opened consecutively. The tapped resistance may be connected in the cathode side of the circuit, and may be replaced by two resistances.
Patent GB-759976-A (GB)
Title: Improvements in or relating to metal working dies
IPC: B21J5/12
Filed: 1954-08-12
Abstract: 759,976. Extruding; stamping. AMERICAN RADIATOR & STANDARD SANITARY CORPORATION. Aug. 12, 1954 [April 7, 1954], No. 23397/54. Class 83 (4). A metal-working die assembly comprises a die shoe 5 supporting a die ring 1 provided with a die cavity 7 and having an external surface 11 tapering inwardly away from the shoe, an annular sleeve 2 pressed on the die ring and having a tapered internal surface 12 complementary to the surface 11 and an external surface 13 tapering inwardly away from the shoe, a clamping ring 3 pressed on the sleeve and having a tapered internal surface 14 complementary to the surface 13, and adjustable clamping means such as bolts 6 between the clamping ring and the shoe, the sleeve and clamping ring being spaced from the shoe whereby they may be both pressed axially towards the shoe to inwardly precompress the die ring by a predetermined amount. A filler plate 4 is provided for the die ring. The die ring 1 and sleeve 2 are made of heat-treated die steel and the clamping ring of soft steel. The taper of the surfaces 11-14 is 1 degree.
Patent GB-577558-A (GB)
Title: Stackers for slicing machines
IPC: B26D1/143
Filed: 1943-03-31
Abstract: 577,558. Slicing-machines. WAAGE, J. J. March 31, 1943, No. 23478/44. Convention date, March 28, 1942. Divided out of 565,819. [Class 28 (ii)] In a slicing-machine as described in Specification 565,819 in which the slice receiving tray is lowered step by step in accordance with the slice thickness, the tray is restored to its initial raised position by manually lifting the outer free end of the carrying arm 18 from the cam 37, whereby cam noses 44, of the forked end of arm 18 rock the lever 43 thereby disengaging the cone clutch 45 from 46 so that the coil spring 48b can rotate the tray-lowering cam 37 'back to its initial position. Specification 577,557 also is referred to.
Patent GB-805567-A (GB)
Title: Manufacture of laminated safety glass panels
IPC: B29C55/04
Filed: 1956-07-30
Abstract: A sheet of plastic material, e.g. a polyvinyl acetal, in particular polyvinyl butyral, for use in the manufacture of laminated safety glass, has one edge dyed and is shaped by longitudinally stretching the undyed edge relatively to the dyed edge.  This may be carried out (a) by winding the sheet of plastic material under tension on to a tapered mandrel, (b) by winding the sheet onto an expansible mandrel which is cylindrical in form when the sheet is wound on, and subsequently expanding one end of the mandrel, (c) by winding the sheet on to a cylindrical mandrel with a paper strip of approximately half the width of the sheet interleaved between successive convolutions of the sheet, or (d) by winding the sheet on to a cylindrical mandrel with successive convolutions offset from one another, to form a roll of trapezoid cross-section.  In each case the undyed edge of the sheet is at the larger end of the roll.  The plastic material may be heated (e.g. to 180 DEG  F.) before stretching, and again after stretching, to relieve stresses.  The surface of the material may have a thin deposit of soda to prevent adhesion of contacting surfaces in the rolled condition.
Patent GB-586702-A (GB)
Title: Improvements in cooking utensils
IPC: A47J36/08
Filed: 1945-09-21
Abstract: 586,702. Lids of cooking utensils. FARNSWORTH, J. R. Sept. 21, 1945, No. 23507/44. [Class 66] The lid 1 of a cooking utensil is perforated at 2 for straining the contents and for steam egress which is controlled as by a perforated, hit-or-miss shutter sliding in guides 3 formed by slitting and depressing parts of the lid. A knob 6 is secured to the shutter.
Patent GB-599036-A (GB)
Title: Improved grinding apparatus for correcting errors in surfaces
IPC: B24B23/02
Filed: 1945-09-12
Abstract: 599,036. Portable grinding-machines. HUCHES, A. O. Sept. 12, 1945, No. 23543. Addition to 567,384. [Glass 60] In apparatus constructed as shown in Fig. 2 of the parent Specification, the lower end of the pillar b has a member m which contains oil into which the movable sleeve c dips so as to lubricate the movement; a flexible sleeve n of leather, rubber, &c. is provided to exclude dust; the sleeve may be a tight fit on the parts c and m or may be anchored thereto by rings or clips o. A guard g for the grinding wheel is provided, and an adjustable stop member k co-operates with the guard to limit the downward movement of the grinding wheel.
Patent GB-216423-A (GB)
Title: Improvements in or relating to the lighting of bakers' ovens
IPC: A21B3/10
Filed: 1923-09-21
Abstract: 216,423. Collins, T. B. Sept. 21, 1923. Lighting devices for ovens. - An electric lamp for lighting a bakers' oven is enclosed in a box detachably fitted into a wall of the oven, the box having a transparent glass or mica window at its inner end and a cover, from which the lamp is supported, at its outer end. In Fig. 1, a cvlindrical liner 1 is secured between the inner and outer shells 3, 4 of the oven wall 5 and supports a removable window 6. The lamp box 7 is secured by bolts 16 in spaced relation to the liner 1 whereby cooling air, admitted and exhausted through slots 20, 21, circulates around the box and between the panes 6, 11. The screws 16 also secure the domed cover 13 which has cooling air inlets and outlets 22. In modifications, the cover is integral with the lamp box, which is inwardly divergent, and the cover is combined with a plug and socket attachment the wiring from which is either enclosed in the cover or passes externally through a tube which may be used as a handle for removing the box.
Patent GB-354058-A (GB)
Title: Improvements in joints for bedstead frames or like structures
IPC: F16B12/56
Filed: 1930-08-07
Abstract: 354,058. Joints. KINSMAN, H. J., Chelmer, Chandler's Ford, Hampshire. Aug. 7, 1930, No. 23706. [Classes 20 (i) and 20 (ii).] A joint for bedstead frames or for general structural purposes comprises a plate 1 with bush projections 8 of conical, domed or like formation to which are non-detachably secured bolts 9 with heads 10 having conical or domed undersides 18, together with a second plate 2 provided with keyhole slots 15 having concave recesses 17, 19 symmetrically situated around their narrow parts 16 in both faces of the plate. A slightly modified form is shown in Fig. 11.
Patent GB-839374-A (GB)
Title: Organopolysiloxanes containing silicon-bonded carboxyalkyl radicals
IPC: C08G77/38
Filed: 1956-08-01
Abstract: Carboxyalkyl siloxanes having the average general formula <FORM:0839374/IV (a)/1> wherein the HOOC group is attached to a C atom other than a Si-bonded C atom, R is an alkyl, aryl, aralkyl or haloaryl radical, n is an integer from 2 to 18 inclusive, a has a value from 0.01 to 2.0 inclusive and the sum a + b has a value from 1 to 2.5 inclusive, are made by hydrolysing the corresponding cyanoalkylpolysiloxanes in an acid or alkaline medium.  The hydrolysis of the cyanoalkyl radical is preferably effected at 80 DEG to 100 DEG  C. by means of aqueous solutions containing from 6 to 96% (by weight) of H2SO4 or 5 to 50% of alkali; other acids specified are HCl, H3PO4, HNO3 and acetic acid, and the alkalis specified are NaOH, KOH and Ca(OH)2. In examples: (1) methyl - b  - cyanoethyldichlorosilane was dissolved in ether and stirred with ice to give an oil which was separated and devolatilized under reduced pressure at 200 DEG  C.  The resulting liquid cyanoalkylsiloxane was then refluxed with aqueous NaOH to yield, on acidification, the desired liquid siloxane; (2) methyl-b -cyanoethylsiloxane was dissolved in 96% H2SO4, heated on a steam bath and then poured into water to yield, after separation of the oil phase, the desired siloxane.  Uses.-As lubricants, hydraulic fluids; for waterproofing fabrics; potting electrical equipment and for coating and insulating surfaces.  The cyanoalkylsiloxanes used may be made in known manner by copolymerizing cyanoalkylsiloxanes with conventional siloxanes or by hydrolysing cyanoalkylsilanes (with or without conventional organosilanes), which in turn may be made by reacting a chlorosilane with a nitrile in the presence of an alkylamine, e.g. cyanoalkyltrichlorosilane can be made by refluxing trichlorosilane, tri-n-butylamine and a nitrile containing p  olefinic unsaturation, e.g. methacrylonitrile, a -ethylacrylonitrile, crotononitrile or acrylonitrile.  The cyanoalkyltrichlorosilane may be converted to the dichlorosilane by reaction with a Grignard reagent or with a dialkyl cadmium; thus methyl-b -cyanoethyldichlorosilane may be made by reacting b -cyanoethyl-trichlorosilane with methylmagnesium bromide or with dimethylcadmium.  Specifications 586,187 and 709,920 are referred to.
Patent GB-1270467-A (GB)
Title: Support for high voltage conductors in vacuum
IPC: H01B12/16
Filed: 1969-05-09
Abstract: 1,270,467. Insulating conductors. SIMPLEX WIRE & CABLE CO. 9 May, 1969 [9 May, 1968], No. 23753/69. Heading H1A. A supporting device between an inner conductor 10 and an outer structure 25 comprises one or more tubes 12, 14, 16, 18, 20 of conductive material separated from inner conductor 10, outer structure 25 and from each other by a plurality of dielectric spacers 22 which are shorter than the adjacent tubes and having their ends inwardly positioned thereof. Conductor 10 may be of copper or aluminium with liquid nitrogen passing through it or of lead for liquid Helium. The tubes may be of anodized aluminium, stainless steel, titanium, nickel plated copper or silicon monoxide covered tungsten and the spacers may be of glass, ceramic or micelex. The outer structure 25 may be a grounded conductor. The inner, outer conductors and the tubes may be of cylindrical, sectoral or elliptical cross-section. The tubes may be formed of different lengths suitably arranged for stress grading. A number of supporting devices could be placed between 10, 25, suitable terminations being made at the ends and the entire structure evacuated.
Patent GB-1468959-A (GB)
Title: Gas dosing arrangement
IPC: B01F23/10
Filed: 1974-05-29
Abstract: 1468959 Mixing gases PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 29 May 1974 [1 June 1973] 23771/74 Heading B1C [Also in Division F2] In apparatus for supplying a very small proportion of additive gas to a carrier gas flowing in a conduit 1, the additive gas is contained in a chamber 27 and is subjected to the weight of a free piston 28. A continuously rotatable valve member 6 has a bore 8 which is alternately in connection with the additive gas supply and with the conduit 1; the proportion of additive depends on the rate of rotation of the valve. The capacity of the bore 8 may be increased by that of the bore 21 and chamber 23. The gases are mixed in the vessel 2. The vessel 9 may be transparent to provide a visual indication of consumption of additive gas. In a modification, Fig. 3 (not shown) a drop in pressure along conduit I is provided by restrictors (R 1 , R 2 ) and the metering chamber 23 is connected to the intermediate pressure zone of conduit 1; a drop of mercury seals the outlet of chamber 23 to conduit 1 when the valve 6 is in the filling position. In another embodiment, Fig. 4, the piston 28 is replaced by a flexible membrane 44 upon which may be a weight 45, and the valve 5 is a solenoid valve having a member 6 which puts the additive supply vessel 9 in communication with conduit 1 through a pneumatic impedance. Rc. In a modification, Fig. 5 not shown, the valve member 6 abturates alternately the conduits 17, 20 at opposite ends of its travel. The mixing vessel 2 has partitions 34-37 traversed by a multiplicity of ducts 43. The apparatus may be used for preparing a respiration gas or one for calibration of gas analysis apparatus.
Patent GB-481108-A (GB)
Title: Process for the working up of products obtained by solvent extraction or mild hydrogenation of solid carbonaceous materials
IPC: C10G73/36
Filed: 1936-08-31
Abstract: Extraction products of coal and other solid carbonaceous materials, after removal of ash, undecomposed coal and at least a part of the extracting agent, are separated into a wax fraction and an asphalt fraction by mechanical separation such as sedimentation or centrifuging.  Products obtained by treating mineral coal, oil shale, peat or bituminous brown coal with solvents such as benzene, alcohol or tetrahydronaphthalene, with or without the addition of hydrogen under pressure, are used.  In an example, finely ground coal is made into a paste with tetrahydronaphthalene, and then heated at 370 to 420 DEG  C., under a pressure of 50 to 200 atmospheres.  Water, hydrogen, carbon monoxide, nitrogen or methane may be present.  The product is freed from insoluble materials by pressure filtration and a part of the solvent is removed.  A solvent for wax constituents such as esters, ethers or paraffinic hydrocarbons may be added.  The mixture is then centrifuged at about 150 DEG  C., to form asphalt and wax fractions.  Separation may also be effected by cooling the hot extract slowly, for example over a period of 12 hours, when a lower asphaltic layer and an upper wax layer are formed.  The asphalt fraction may be blown with air and used as a road asphalt, or hydrogenated to form a fuel oil.  The wax fraction is treated with selective solvents and the purified product used for wax-containing compositions, for oxidation treatment; or by hydrogenation converted into lubricating oils, Diesel oils, illuminating oils, and by cracking these hydrogenated products converted into gasoline.
Patent GB-1056236-A (GB)
Title: Copolymers of olefins and acrylonitrile and a process for producing the same
IPC: C08F212/10
Filed: 1964-06-09
Abstract: 1:1 Alternating copolymers of acrylonitrile and an olefin having the formula <FORM:1056236/C3/1> wherein R1 and R2 are independently a hydrogen atom or a hydrocarbon residue having 1 to 19 carbon atoms are prepared by contacting acrylonitrile with the olefin in the presence of an organo-aluminium halide of such average composition as represented by the formula AlRnX3- n wherein R represents an organic residue having 1 to 20 carbon atoms, X represents a halogen atom and n is an arbitrary number higher than 0 but lower than 3.  Comonomers exemplified are ethylene, propylene, butene-1, isobutylene, hexene-1, and styrene. Catalyst exemplified are ethyl aluminium dichloride, methyl aluminium sesquibromide, ethyl aluminium dibromide, a mixture of triethyl aluminium with ethyl aluminium dichloride, and a mixture of triethyl aluminium with aluminium bromide complexed with acrylonitrile. The polymerization may be effected in bulk or in an inert solvent such as n-heptane. Purification of the copolymers is effected with methanol and hydrochloric acid.