baber/WOPTO huggingface dataset:
Patent GB-679422-A (GB)
Title: Improvements in or relating to overload tripping or warning devices for electrical converting apparatus
IPC: H02H7/12
Filed: 1950-09-07
Abstract: 679,422. Protective cut-out arrangements; differential switches. HACKBRIDGE & HEWITTIC ELECTRIC CO., Ltd., and BINGLEY, P. June 1, 1951. [Sept. 7, 1950] No. 22062/50. Class 38 (v). A mercury-arc rectifier or other converting apparatus 10 is cut out, or an alarm given, by closure of contacts 11, 14 on overload. Contact 11 comprises a screw-threaded sleeve non- rotatably mounted on a screwed shaft 12 driven over a slipping clutch 25 by the output shaft 24 of a differential-gear 15. The latter has two input shafts, one, 16, driven by a synchronous motor 18, and the other, 17, by a D.C. ampere-hour meter 20, the arrangement being such that at 100 per cent load, the shaft 24 is stationary, and on an overload or underload, the contact 11 moves to the right, or to the left, respectively. The contact 14 is mounted on the shaft 14<SP>1</SP> of an ammeter 22 responsive to the D.C. output and is in the form of an edgecam having a circular part and a part, the radius of which progressively increases according to the required tripping characteristic. With an overload up to 125 per cent, the circular edge of contact 14 is presented towards the advancing contact 11, but with overloads above this value, the contact 14 is rotated so that a part of the edge having the increased radius is presented, thereby reducing the distance which it is necessary for contact 11 to travel to close the contacts. The shunts 21 of the ammeter and the meter 20 may be made from material having a positive temperatureco-efficient so as to compensate for ambienttemperature rises.
Patent GB-281763-A (GB)
Title: Improved magnetic alloys
IPC: C22C19/00
Filed: 1926-09-08
Abstract: 281,763. Smith. W. S., Garnett, H. J., and Hotden, J. A. Sept. 8, 1926. Annealing.-Nickel-iron alloys containing also silicon and another cement may be annealed in the form of fine wire for a short time at 880‹ C. in an inert atmosphere, such as nitrogen, followed by rapid cooling. The heat treatment may be performed on a loaded conductor.
Patent GB-635254-A (GB)
Title: Improvements in fishing rod handle
IPC: A01K87/06
Filed: 1947-08-08
Abstract: 635,254. Fishing. AMERICAN FORK & HOE CO. Aug. 8, 1947, No. 22149. Convention date, Sept. 28, 1944. [Class 48] In a fishing rod handle of the type in which the rod socket 2 is connected to the hand-grip portion 4 by a reel seat 3, the reel clamping means comprises a wedgeshaped reel clamping element 14 arranged within the reel seat and connected to a spring-loaded plunger 15 arranged within the hand-grip portion. A ball 12 entered through the aperture x in the hand-grip portion into the depression y in the plunger co-acts with the shoulder 30 to form a stop in the forward direction.
Patent GB-1397947-A (GB)
Title: Process for the production of artificial or imitation leather
IPC: D06N3/00
Filed: 1972-05-11
Abstract: 1397947 Coated sheet materials AKZO NV 11 May 1972 [11 May 1971] 22151/72 Heading B2E  An artificial leather is obtained by applying a coating composition comprising 10-30 parts by weight of polyurethane and 300-1500% by weight sodium sulphate, based on the quantity of the polyurethane, in 90-70 parts by weight of a solvent which is miscible with water and is a non-solvent with sodium sulphate, the viscosity solution being at least 20 poises, to a soft openwork woven or knitted fabric or bonded fibre fleece and coagulating the polyurethane layer and removing by washing the sodium suLphate. The coagulation is preferably carried out at a temperature below 35C and washing at a temperature above 5C, particularly about 60C. The sodium sulphate may have a particle size of up to 350 Á. The preferred solvent is dimethyl formamide. A further polyurethane coating may be applied on top of the first before the first layer is coagulated and this may contain no salt and be microporous. The material may be embossed during coagulation or after washing and drying.
Patent GB-1060392-A (GB)
Title: Improvements in or relating to gas burners
IPC: F23D14/10
Filed: 1963-06-04
Abstract: 1,060,392. Gas burners. GEO. BRAY & CO. Ltd., J. HANCOCK, and A. WESTERMAN. May 15, 1964 [June 4, 1963], No. 22217/63. Heading F4T. A gas burner includes a plurality of jets disposed so that the flames touch, each jet comprising an injector and a mixing channel which is open to atmosphere throughout the major part of its length. The jets may be formed in the sides of a ceramic block, Fig. 3, or in the cylindrical surface of a ceramic rod, Fig. 5, or in the outside and inside surfaces of a ceramic cylinder, Fig. 4, or in two sheets of steel joined together, Figs. 6, 7. The mixing channel may taper.
Patent GB-955851-A (GB)
Title: Stereospecific polymerisation of vinyl ethers
IPC: C08F16/12
Filed: 1961-06-20
Abstract: In a process for the stereospecific polymerization of vinyl alkyl ethers in which the alkyl group contains up to 5 carbon atoms, the ethers are polymerized in the presence of a cationic catalyst comprising a solid solution of aluminium trichloride in a trichloride of a transition metal of Group IV or V of the Mendel<\>aeef Periodic Table. The catalyst may be prepared by reducing the transition metal tetrahalide with aluminium in the presence or absence of aluminium trichloride. Part of the aluminium chloride may be removed from the catalyst so formed by sublimation under reduced pressure or by treatment with complex foaming solvents such as ethers and tetrohydrofuran. The catalyst may be further activated by treating with a solution of an organo aluminium compound in a hydrocarbon solvent.  Polymerization may be effected in liquid media, e.g. toluene or mixtures thereof with aliphatic hydrocarbons and/or ethers such as anisole.  Preferred transition metal trichlorides are titanium and vanadium trichlorides. Examples describe the polymerization of vinyl isobutyl ether in the presence of a titanium trichloride-aluminium trichloride solid solution in (1) toluene, (3) toluene and diethyl ether and (4) toluene and anisole; (2) in toluene in the presence of an aluminium trichloride-titanium trichloride catalyst which has been treated with a toluene solution of ethylaluminium dichloride; and in the presence of aluminium trichloride-titanium trichloride catalysts which have been extracted with diethyl ether in (5) toluene and (6) toluene and propylene. Crystalline polymers are obtained which may be extruded into filament and formed into films which may be oriented by stretching. Specification 906,604 is referred to.
Patent GB-721633-A (GB)
Title: Improvements in gland and spindle assemblies
Inventor: SPIDY ALEXANDER RONALD
IPC: F16J15/50
Filed: 1952-09-04
Abstract: 721,633. Stuffing-box substitutes. KIDDE CO., Ltd., W. Dec. 4, 1953 [Sept. 4, 1952], No. 22306/52. Class 122 (5). [Also in Group XIX] A spindle, such as a valve spindle 1, subjected to limited axial movement, is sealed by a U-shaped cross-section rubber packing member 4 interposed between and bonded to the spindle and its housing 2. The packing member is bonded to the bore of the housing 2 but not to the end flange 3 thereof.
Patent GB-1437459-A (GB)
Title: Fluorocarbon-substituted polymers heat exchanger
IPC: C08G8/36
Filed: 1973-05-10
Abstract: 1437459 Aromatic polymers with fluorinated substituents IMPERIAL CHEMICAL INDUSTRIES Ltd 22 April 1974 [10 May 1973] 22355/73 Heading C3R Polymers comprise repeating units each containing an aromatic nucleus to which are attached pendant substituents linked to the nuclear carbon atoms by oxygen atoms, at least 5% of the substituents attached to the oxygen atoms being aliphatic fluorocarbon groups. They may be obtained by reacting polymers having phenolic hydroxyl groups with reactive fluorocarbon compounds. In examples novolak phenol-formaldehyde resins are reacted with tetrafluoroethylene pentamer, with hexafluoropropene and with C 10 F 19 OC 6 H 4 SO 2 Cl; one product is reacted further with phosphorus oxychloride. Uses.-Coatings, electrical insulation and mould-release agents.
Patent GB-794589-A (GB)
Title: Improvements relating to vehicle lamps
Inventor: VAUGHAN JOHN
IPC: B62J6/02
Filed: 1955-08-04
Abstract: 794,589. Cycle &c. lamps. DAWES CYCLES, Ltd. Aug. 2, 1956 [Aug. 4, 1955], No. 22374/55. Class 75(3) In vehicle lamps of the type provided with a sleeve at the back to put over a tongue 12 on a lamp bracket and enclosing a plate spring to bear on the front of the tongue, the sleeve has an aperture 101 registering with an opening 121 in the bracket tongue and hears a resilient member 11 having a part 111 projecting through the aperture 101 in the sleeve and engaging the opening 121 in the bracket tongue when the lamp is in position on the bracket. The resilient member 11 may have the top edge rolled at 112 to provide a finger grip for disengaging the portion 111 from the opening 121 when removing the lamp.
Patent GB-880583-A (GB)
Title: Improvements in and relating to the production of composite metallic material
IPC: B22F7/06
Filed: 1959-06-30
Abstract: 880,583. Moulding powdered metals. MALLORY METALLURGICAL PRODUCTS Ltd., and DREW, J. H. June 29, 1960 [June 29, 1959], No. 22433/59. Class 87(2). [Also in Group II] A sintered composite bi metal or multi metal strip, rod or tube is formed by inserting at least one spacer of required shape and size into a mould to divide the mould in to predetermined volumetric proportions, filling the different mould portions with different metal powders to the same level, compacting the powders after removal of the spacer, sintering the compact and finally extruding the compact. The shape and size of the spacer is determined from the shape and weight of the metal constituents of the final product taken in conjunction with the apparent density of the metal powders used. The method is exemplified in the production of an L shaped bi metal contact strip comprising a backing 1 of copper and a contact face 2 of Ag or Ag /CdO, Fig. 1. The required spacer e.g. of aluminium is inserted into the mould cavity to define the two portions 1 and 2, which are then filled with the predetermined weights of Cu powder and Ag powder. The spacer is then withdrawn and compaction is effected at 100 tons total load. The compact is sintered at 750‹C. in cracked ammonia and then repressed at 200 tons followed by hot extrusion.
Patent GB-1141471-A (GB)
Title: A circuit arrangement for minimising divergences from a predetermined value in the amplitude of an electrical signal
IPC: H04N5/18
Filed: 1966-05-20
Abstract: 1,141,471. Transistor gain control circuits. FERNSEH G.m.b.H. 20 May, 1966 [22 May, 1965; 13 Dec., 1965; 26 March, 1966]. No. 22495/66. Heading H3T. A circuit arrangement for minimizing divergences from a predetermined value in the amplitude of an electrical signal comprises means for developing a control voltage related to the amplitude of a selected component only of said signal and for applying said control voltage to vary the gain of an amplifier, included in the path of said signal, by way of a control channel of which the effective timeconstant is determined by a first damping element when said divergence in either sense is large, and when said divergence is small is determined by the series combination of said first and a second damping element. In an embodiment the rectified gain control voltage is applied to terminal 8 and smoothed by a short time-constant circuit 11, 12; it is then passed to the bases of a pair of transistors 15, 16 of opposite conductivity type the emitters of which are connected in parallel and to capacitor 17. The voltage across capacitor 17 is supplied to the gain-controlled element in the signal path via emitter follower 18. For control signals deviations in either direction from the normal value and of large enough amplitude either transistor 15 or transistor 16 is conductive and the time-constant is that of R.C. circuit 11, 12; below a predetermined level, however, transistors 15, 16 are non-conductive and of high output impedance, determining with capacitor 17 the time-constant.
Patent GB-420287-A (GB)
Title: Improvements in and relating to electric converting systems
IPC: H02M1/04
Filed: 1934-08-02
Abstract: 420,287. Converting; dynamo-electric machines. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. Aug. 2, 1934, No. 22549. Convention date, Aug. 2, 1933. [Classes 35 and 38 (ii)] In an arrangement for supplying two-phase current at a variable frequency to a load circuit such as a motor 10 from a three-phase network 11 of fixed frequency, comprising groups of sequentially operated grid-controlled valves, the grid transformers controlling each group are provided with tertiary windings which are sequentially short-circuited to deenergize the grid circuits and thus render the groups of valves nonconducting in the required sequence. In the arrangement shown, four groups of valves 18, 21, 24, 27 arranged as three-phase rectifiers are connected so as each to feed one half of a pair of windings 12, 13 forming the two-phase system. When the latter comprises a variable speed synchronous motor, the field winding 14 may be separately excited or connected between the mid-points of the windings 12, 13. A variable resistance 15 may be connected across the field winding to vary the speed - torque characteristic. The four grid transformers controlling the groups of valves are energized from a common phase-shifter 39 supplied from the three-phase system 11, and their tertiary windings 40 ... 43 are connected to four groups of fixed contacts 45 ... 48 co-operating with rotary brushes 49 whereby the windings are sequentially short-circuited. these windings are mounted on the core legs so as to be closely coupled to the corresponding secondaries 31 ... 34 whilst the primaries 35 ... 38 are mounted remotely therefrom with magnetic shunts interposed. Thus short-circuiting of the tertiaries de-energizes the secondaries and causes the corresponding group of valves to become nonconductive, grid bias batteries 30 being employed where necessitated by the characteristics of the valves. The shortcircuiting brushes are rotated at a speed corresponding to the frequency required in the load circuit, and where the latter comprises a motor, the brushes are mounted on the motor shaft. Speed control may then be effected by angular displacement of the fixed contacts 45... 48, and direction may be reversed by displacement of the fixed contacts through 180‹ thus reversing the phase rotation in the windings 12, 13.
Patent GB-533222-A (GB)
Title: Improvements in or relating to the filtration of fluid or the treatment of solid material with fluid
IPC: B01D46/32
Filed: 1939-08-03
Abstract: 533,222. Washing and bleaching apparatus. HAGLUND, G. Aug. 3, 1939, No. 22556. [A Specification was laid open to inspection under Sect. 91 of the Acts, March 18, 1940] [Class 15 (i)] [Also in Groups I, II, III and XXVIII] In passing liquid or gas through solid material, as in filtering or in washing, lixiviation, bleaching or otherwise treating solid matter with fluid, the solid matter is moved continuously along a channel having permeable walls and the fluid is caused to cross the channel and the material therein transversely two or more times in the same direction, each later crossing being nearer the inlet end for the solid material than any earlier one. The apparatus may comprise outer and inner drums 1, 2, Fig. 3, mounted on a hollow horizontal shaft 3. Segmental screens 7 are arranged between longitudinal girders 6 to form a spiral channel 8, through which a filtering medium, such as sand, or other solid material is continuously passed. Fluid supplied to the outer space 11 filters through two turns of the spiral to an inner space 12 from which it is discharged. The shaft 3 is divided by a partition 14, Fig. 8, and a blind flange 15 into four chambers, two of which 16a, 16b serve as inlet and outlet chambers for the sand while the other two 17a, 17b serve as inlet and outlet chambers for the fluid. The sand passes from the chamber 16a, by a pipe 18 to the inner end of the spiral and by a pipe 20 outside the drum 1 from the outer end of the spiral to the chamber 16b. Similarly arranged pipes 21, 23 bring the fluid from the chamber 17a to the space 11 and take it from the space 12 to the chambers 17b. A pipe 24, Fig. 1, and a sleeve 26 bring the sand from an inlet 36 to the chamber 16a and similar pipes 25, 30, 31 with connected sleeves are provided for the supply of fluid and discharge of sand and fluid respectively. The pressure differences at inlet and outlet for the sand and fluid can be adjusted by turning the sleeves about the shaft. Passage of the sand through the spiral is promoted by rotating the shaft and drums as indicated by the arrow 43, Fig. 3. Modified apparatus is described in which the central shaft is vertical. The apparatus is stated to be applicable for washing or bleaching cellulose.
Patent GB-422951-A (GB)
Title: Improvements in and relating to rotary compressors and exhausters
IPC: F01C21/08
Filed: 1934-08-02
Abstract: 422,951. Rotary compressors. BROOM, H. S., Springfield, Great Kingshill, and BROOM & WADE, Ltd., High Wycombe, both in Buckinghamshire. Aug. 2, 1934, No. 22590. [Class 110 (ii)] The sliding blades of an eccentric-rotor type of compressor or exhauster are formed from a non-metallic moulded or built-up material, in which is embedded a metallic reinforcing member. The latter 7 may be continuous as shown with alternate slots in its edges, or may comprise a number of separate plates. The thickness of the plate may be uniform or greater in the centre than at the ends. The coefficient of expansion of the various materials is kept as similar as possible.
Patent GB-207242-A (GB)
Title: Air nozzle for liquid fuel burners
IPC: F23C7/00
Filed: 1922-08-19
Abstract: 207,242. Smith, D. Aug. 19, 1922. Spray burners; burners, attaching.-An air admission device for oil burners used in steam-generators comprises a valve member which is slidable coaxially in respect to the fuel supply tube and is adapted to shut off the air supply automatically in the event of an increase of pressure in the combustion chamber such as is caused by backfiring. Figs. 2 and 2<a> show one form in which a pear or onion-shaped valve part 12 slides in the air-admission conduit 2 on a tube 13 which is supported in the conduit 2 by a bracket 14, 15. The oil tube 13 encloses the fuel nozzle 5 which is secured in position by means of a pivoted yoke 29 and screw 30. The valve part 12 is rendered easily movable on the tube 13 by supporting it by means of rollers 20 or by a parallel motion device. In operation the valve part 12 is normally held by the air pressure against a collar 17 on the tube 13 but in the event of a back fire it is moved outwardly into engagement with a packing rib 16 on the conduit 2 and the air supply to the furnaces is cut off. The valve part 12 is fitted with manual operating means such as spindles 22 connected by cross pieces 23, 25. The cross piece 23 is fitted with a screw 24 and is mounted so as to allow it to be turned to permit withdrawal of the burner nozzle. Alternatively the spindles 22 may be secured to or threaded in the part 12. In a modified form the part 12 and the tube 13 are moved towards the furnace to shut off the air supply, a hand-operated sliding member being adapted to engage at one end of its movement with the rear end of the. part 12 and at, the other end of its movement with a stop on the tube 13. In another form shown in Fig. 3 the valve member is constituted by a bell-shaped body 36 forming the outer part of the air admission conduit. The body 36 is supported by pivot arms 35. On an increase of pressure in the combustion chamber the rearward shock is transmitted through passages 40 in the wall of the combustion chamber to the annular space around the body 36 and the body 36 is moved into contact with the stationary part 37 of the air admission conduit to shut off the air supply. The valve is provided with manual operating means preferably connected to the arms 35.
Patent GB-1510538-A (GB)
Title: Colourless triethylene tetramine and tetraethylene pentamine
IPC: C07C209/08
Filed: 1975-05-23
Abstract: 1510538 Triethylene tetramine and tetraethylene petramine BAYER AG 23 May 1975 [22 June 1974] 22695/75 Heading C2C Colourless triethylene tetramine and tetraethylene pentamine are made by reacting 1,2- dichloroethane with ammonia and recovering the desired amines from the reaction product (e.g. by distillation), both processes in the presence of at most 500 p.p.m. of oxygen (based on the total amount of gas present).
Patent GB-169873-A (GB)
Title: Improvements in shovels
IPC: F24B15/06
Filed: 1920-07-30
Abstract: 169,873. Gale, E. F. E. July 30, 1920. S h o v e l s - Open rectangular shovels are formed with a transverse bend so that one part b is inclined to the other part a at an obtuse angle. The side flanges of an existing shovel may be cut and the end part of the shovel bent upwards, the overlapping parts of the flanges being then riveted together. The two parts a, b may be hinged together and provided with hooks d and eyes e and other means for locking them together in two positions.
Patent GB-482191-A (GB)
Title: Spraying metals or alloys
IPC: C23C4/12
Filed: 1936-08-18
Abstract: 482,191. Making fins on tubes &c. LUMB, C. F. Aug. 18, 1936, No. 22766. [Classes 83 (ii) and 83 (iv)] A tubular supporting surface has a radially projecting web or fin formed thereon by a spraying operation. Aluminium fins may be provided on tubes of aluminium alloys, stainless steel, &c. Cooling fins on condenser tubes, air cooled internal-combustion engine cylinders or exhausts, oil tanks, or sumps may be so formed. A tube is caused to project through an orifice in a block c of material to which sprayed metal will not adhere, the fin g being sprayed into the annular recess d so formed, and the block removed to leave the fin united to the tube. Alternatively, one or two glass or metal plates e treated to prevent adherence of the sprayed metal and having a slot f to embrace the tube, are held adjacent the tube and metal sprayed thereon, the plates then being removed, the fins so formed extending partly or completely about the tube. The fins may be of uniform or non-uniform thickness, and may taper from the base to the edge. They may be eccentric, and may be corrugated. The fins and the tube may be of circular or non-circular section.
Patent GB-316192-A (GB)
Title: A device for making rings, picture frames and similar articles of moulded plastic material
IPC: B29C33/00
Filed: 1929-07-24
Abstract: 316,192. Tschakert, R. July 24, 1928, [Convention date]. Moulding-machines-Rings, picture frames &c. are formed by forcing plastic material into a chamber 5 between rings 4 threaded upon a core 3 which is passed through bushes 9 apertured to fit the rings. Wire or other reinforcement may be disposed between the rings which are spaced apart by shoulders, which are preferably integral with the rings. The material is fed to the chamber 5 from a cylinder 8 by a piston 11 or screw. Nuts 12 retain the rings 4 upon the core. The moulded rings are separated by removing the nut 12, or, if of rubber, they may be vulcanized upon the core before separation.