baber/WOPTO huggingface dataset:
Patent GB-446497-A (GB)
Title: Improvements in or relating to thermionic valves and circuits therefor
IPC: H01J21/20
Filed: 1934-09-25
Abstract: 446,497. Thermionic valves; valve generating and amplifying circuits. PLESSEY CO., Ltd., and HODGSON, A. D'A., Vicarage Lane, Ilford, Essex. Sept. 25, 1934, No. 27485. [Classes 39 (i) and 40 (v)] A combined oscillation generator and amplifier comprises a thermionic valve having a plurality of anodes, a common control grid and a common cathode, one anode, together with the common grid and cathode, forming with a frequency determining circuit a generating circuit, and another anode, together with the common grid and cathode, forming with an output circuit an amplifier ; the two circuits are intercoupled through the common grid and the valve is so constructed that a common bias applied to the grid biasses the generating circuit only to the cut-off point while it biasses the, or each amplifier section substantially beyond the cut-off point. The amplifier thus works under " Class C " conditions, whereas the generator is arranged to give sinusoidal oscillations. The required difference in the characteristics of the generating and amplifying sections may be obtained by varying the pitch of the grid, or the spacing of the anodes, or both together. In a modification, the effect of a variation of mesh in the common grid 2, Fig. 3, may be obtained by interposing an auxiliary grid 5 between the cathode 1 and one portion of the grid 2, the turns of the grid 5 falling between those of the grid 2. The grid 5 may be connected to the grid 2, or to a source of different potential. The usual frequencydetermining circuit may be replaced by an electrical long line or the equivalent artificial line, or a filter network. In a modified circuit shown in Fig. 6, the auxiliary grid 5 is employed in the generating circuit, and the common grid 2, which is maintained more positive than the grid 5, collects a portion of the oscillator electron stream, the potential developed across the impedance 11 actuating the amplifier. The frequency-determining and output circuits are denoted by 10 and 9 respectively. A number of amplifying sections may be employed and these may be designed to give, in conjunction with suitably tuned output circuits, a series of harmonics of the oscillator frequency. For example, the anodes may be arranged with successively greater diameters as the order of the desired harmonic increases. Alternatively the grid mesh may be varied or a number of auxiliary grids similar in function to grid 5 may be employed. The dimensions and electrical characteristics of a design of two-anode valve are given. An electrostatic shield may be placed between the anodes and around the common grid to reduce interaction between the oscillator and amplifier sections.
Patent GB-1462260-A (GB)
Title: Fuel fired fluid heaters
IPC: F23C99/00
Filed: 1974-06-20
Abstract: 1462260 Preventing corrosion; burning liquid waste; burners MINERALOL-UND FILTERTECHNIK GmbH 20 June 1974 [20 June 1973] 27489/74 Headings F4B and F4T In a fluid heating furnace having heat exchange surfaces 12, the burner 7 is fed with liquid waste or oil producing corrosive flue gases or with fuel which produces non-corrosive flue gases according to the temperature in the outlet flue so that the heat exchange surfaces do not fall below the dew point temperature of the corrosive gases while the fuel producing them is being burned. A temperature sensor 14 controls a valve 9, which may be a change over valve or a mixing valve so that clean fuel is supplied to the burner 7, either instead of or in combination with corrosive producing fuel, when the temperature of the heat exchange surface falls. The two fuels may be fed to separate burners. The working fluid of the heater may be oil.
Patent GB-226918-A (GB)
Title: Improvements in or connected with electrical resistances
IPC: H01C10/24
Filed: 1923-11-02
Abstract: 226,918. Woodroffe, F. K., and Dawson, R. H. N. Nov. 2, 1923. Variable resistances. - A variable resistance which may be used as a rheostat for thermionic valves, or as a potentiometer, consists of a rotary member acting on a metal ring or other part in engagement with the resistance element so as to vary the point of contact by a progressively rolling action. In one form, Fig. 1, the resistance element is a coil 1 in ring or sector form disposed within a metal casing 3 which can be made to contact with it by a rotary cam member 6 operated by a handle 5 and bearing on an inner flange 7 of the metal part 3. The resistance is connected at one end to one lead and the metal part 3 to the other. Where the resistance is of a softer pliable nature, such as carbon, plumbago, and fire or china clay compressed and baked, the form shown in Fig. 2 is used. A case 3 is lined with insulating material, the resistance 1 being in the form of a split ring, one end carrying a terminal. Contact is made by a spring- pressed wheel 6 acting on a metal ring 11 and operated by a handle 5 and arm 6<x>. In another form, Fig. 3, the resistance 1 is carried on a revoluble insulator 2, which is pressed by a roller 6 so that the resistance is brought into contact with a metal casing 3 provided with a suitable terminal. In another modification, Fig. 4, the resistance 1 is mounted on a threaded insulator 2 and can be rotated by a handle 5. Contact is made with a metal ring 11 pressed down by a roller 6. In some cases, the resistance element mav have a high resistance and small capacity, such as paper soaked or coated in indian ink with or without the addition of minerals, or it may be painted with a medium carrying a percentage of similar conducting substances and these may be sealed together with a ring of metal or a wire within a tube of indiarubber so that the ring is not normally in contact with the resistance element except when pressed therein. The tube may be filled with air or other suitable gas.
Patent GB-423057-A (GB)
Title: An improved process for making metal albumen tannin ester compounds which are readily soluble in water
IPC: C07K14/435
Filed: 1933-10-06
Abstract: Water-soluble metal albumen tannin ester compounds are prepared by dissolving tannin esters other than acetyl tannin esters, which still contain free phenol groups and are saponifiable at ordinary temperature by normal sodium carbonate only with difficulty, in such a quantity of aqueous alkali or alkaline-reacting alkali salt that the solution is still weakly acidic, and treating with aqueous metal albumen solutions.  The compounds are used therapeutically in solution or powder form.  In examples: (1) Benzoyl tannin is made by heating a mixture of tannin, natrium benzoicum, and benzoic anhydride in a water bath, diluting largely with water, filtering, washing, and vacuum drying at 30--40 DEG  C.  A solution of the benzoyl tannin in sodium carbonate is added to an aqueous solution of argentum proteinicum and the solution evaporated.  (2) Casein is boiled with caustic soda solution, filtered, and nitric acid added as long as the initial precipitate redissolves.  To the solution gold chloride is added, the product then being heated to about 90 DEG  C. until a clear solution is obtained which is cooled, dialysed, and the gold albumen compound vacuum dried.  A concentrated solution of the product is treated with benzoyl tannin in sodium carbonate solution and the product dried in vacuo.  (3) Bismuth albumen benzoyl tannin is made as in (2) using a solution of bismuth nitrate to which mannite is added. (4) Tannin and concentrated lactic acid are heated to give lactyl tannin which is dissolved in sodium carbonate and argentum proteinicum in water added.  The product is vacuum dried. (5) Tannin is added to a dried methyl alcohol solution of acetyl salicylic acid and the mixture refluxed.  The solvent is evaporated and the product washed with ether and water.  A solution of the acetyl salicyl tannin in sodium carbonate is treated with a solution of argentum proteinicum and the product dried in vacuo.  A prior proposal to make a soluble silver albumen tannin compound by treating diacetyl tannin dissolved in alkali with an aqueous solution of albumose silver albumen is referred to. p
Patent GB-1482183-A (GB)
Title: Fuel injection apparatus for internal combustion engines
IPC: F02M69/12
Filed: 1975-06-23
Abstract: 1482183 Fuel injection apparatus GKN TRANSMISSIONS Ltd 23 June 1975 [21 June 1974] 27570/74 Heading F1B In a fuel injection pump of the type disclosed in Specifications, 1417703, 1417704, 1418023 and 1420441, the pressure regulating valve is modified so as to be additionally electro-magnetically operable so as to cut off the fuel supply to the injectors by opening the relief valve 49 in response to signals from a control circuit indicating 'over-running' when the engine speed is above 'idle' and running on when the ignition is cut. To prevent fuel supply in the over-run condition switch S1 is closed as the throttle valve is closed and S2 when the absolute pressure falls below a predetermined level thus energizing the solenoid 55, and opening valve 49. Switch S2, may be a micro-switch 52, operated by the pressure sensing device (25), of the fuel pump Fig. 1a, (not shown). An inhibiting means is provided to prevent the solenoid being energized when the engine is at 'idle' speed either by a speed sensor or an ignition retarding system which causes the absolute pressure at idle to exceed that which corresponds to the closing of S2. To prevent running-on, breaking the ignition circuit makes contacts al and a3, and the solenoid is energized via switch S4 which remains closed until the engine stops. This switch may be oil pressure responsive, speed responsive or a time delay switch. The de-energization of the solenoid after the engine has stopped prevents fuel leakage from the high-pressure passageways. Specification 1471388 is also referred to.
Patent GB-506317-A (GB)
Title: Two piece foot-arch support
IPC: A43B7/22
Filed: 1938-09-23
Abstract: 506,317. Foot-arch supports. MOORE, W. D. Sept. 23, 1938, No, 27765. [Class 17 (ii)] An arch supporting extension 2 on the inner side of a lipped insole 1 is supported by a metal plate 8 provided with attaching prongs 10 which pass through the inseam lips 5 on opposite sides of the underside of the insole, and which are attached at 11 to the insole adjacent its outer margin. A shank stiffener 7 may underlie the prongs 10 of the plate 8.
Patent GB-899159-A (GB)
Title: Improvements in or relating to fluid-blast electrical switches
IPC: H01H33/985
Filed: 1960-08-11
Abstract: 899,159. Fluid-blast switches. LANGE, E., and NATIONAL INDUSTRI A.S. Aug. 11, 1960 [Aug. 24, 1959], No. 27831/60. Class 38 (5). A switch comprises an axially-movable rod having conducting parts 6, 7 and insulating parts 8, 9, fixed contacts 2 . . . 5 and arcing electrodes 13 . . . 16. When the switch is opened, the conducting parts 6, 7 draw series arcs between the contacts 2, 3 and 4, 5, these arcs moving on to the electrodes 13, 14 and 15, 16. Pressure is produced in the quenching medium in the chamber 1 as soon as the arcs are drawn on the movement of the conducting parts and this pressure is built up when the lower arc is transferred to the electrodes 15, 16. The pressure due to this lower arc forces a blast of cool quenching medium to flow from within a metal tube 12, interconnecting the contacts 3, 4 past the arc transferred to the electrodes 13, 14. The quenching medium may be gas or liquid with or without inert powder. Fig. 2 (not shown) illustrates a three " break " arrangement in which the pressure  produced by the central arc forces blasts of cool quenching medium on to the outer arcs.
Patent GB-450284-A (GB)
Title: Device for lubricating reciprocating engines
IPC: F16N7/30
Filed: 1935-10-09
Abstract: 450,284. Lubricating. RAT, F., 8, Koniggratzstrasse, Essen, Germany. Oct. 9, 1935, No. 27911. [Class 12 (iii)] A device for lubricating machines supplied with a pressure medium which pulsates during operation of the machine consists simply of a lubricant container and a passage for carrying the pulsating pressure medium, the container communicating directly with the interior of the passage through a single entirely unobstructed opening or set of openings provided in the wall of the passage and constituting both the inlet to and outlet from the container and located above the normal level of the lubricant in the container, whereby the pressure fluid has free access to the surface of the lubricant and the charging of the pressure fluid with lubricant is entirely effected through its contact with the lubricant without the use of any moving mechanical devices. In a construction, Fig. 1, for insertion in a vertical pipe line, the container 3 communicates with the passage 2 through openings 4. In a modification, Fig. 2, for insertion in a horizontal pipe line the container 3 communicates with the passage 2 through openings 10 in a vertical tube 9.
Patent GB-692189-A (GB)
Title: A soap holder for use in the bath
IPC: A47K5/04
Filed: 1949-11-01
Abstract: 692,189. Soap holders. AITKEN. R. Jan. 5, 1951 [Nov. 1, 1949]. No. 27929/49. Class 131 [Also in Groups XV and XXIII] A combined top boat and buoyant soap holder comprises a hollow floating hull completely enclosing an air space, an opentopped soap container on the hull and maintained by the buoyancy of the hull with its base above the level of the water on which the hull floats, and channels on the hull opening from the container and sloping rearwardly and downwardly to discharge water as a jet to propel the hull. As shown, the hollow hull 1 of a soap holder, in the form of a toy submarine, has a central, stabilizing keel 3, and spaced projections 4 to support the soap holder when it is out of the water. A soap container 5 holds a tablet of soap 6, above the level of the surrounding water, and water draining from the soap, or poured into the empty soap holder, drains away through openings 12 and downwardly-sloping channels 13 forming a jet which propels the toy submarine over the surface of the water. In a modification, a removable brush, received in an undercut grooves, replaces the keel, and supplementary openings in the side walls assist drainage.
Patent GB-992335-A (GB)
Title: Improvements in or relating to textile carding machines
IPC: D01G15/20
Filed: 1961-08-01
Abstract: 992, 335. Carding-engines. DAIWA BOSEKI KABUSHIKI KAISHA. Aug. 1, 1961 [Aug. 9, 1960 (2)], No. 27962/61. Heading D1N. A carding machine as claimed in Specification 901,632 has an air chamber beneath the taker-in formed in part by a casing, a section of the casing immediately beneath the taker-in being adjustable. The adjustable under-casing in the embodiment illustrated is formed by plate members 42, 52 secured together by a butterfly nut. A sliding back plate for the air chamber 7 is provided by a vertical section of the plate 52 from which depends a flexible sheet 53 of rubber or synthetic resin. The space between the taker-in and the upper arcuate portion of the plate 52 may be adjusted by operation of a bell-crank lever 55. In an alternative form (Fig. 1, not shown), a fixed plate is used instead of the vertical section of plate 52. Reference has been directed by the Comptroller to Specification 901, 632.
Patent GB-1263191-A (GB)
Title: Fuel burner ignition
IPC: F23Q7/12
Filed: 1969-06-03
Abstract: 1,263,191. Burner controls. HARPER WYMAN CO. 3 June, 1969 [5 July, 1968], No. 27981/69. Heading F4T. An ignition system for a burner 42 e.g. in a gas oven 44, with fuel supplied from a manifold 48 via a valve 110 and an electromagnetic valve 56, has the primary winding 74 of a transformer 72 connected to power supply terminals 66, 68 and is characterized in that the control coil 54 of valve 56, a fuse 78 and an electrical resistance igniter 64 adjacent the burner are connected with the transformer secondary winding in a series circuit loop. It is arranged that valve 56 is not opened unless enough current e.g. four amps, flows to render the igniter sufficiently hot, while if the igniter is short circuited, the fuse 78 blows, e.g. at 8 amps. In an example, the transformer was fed from 120 volts, and was rated at 10 amps, 3À75 volts, a current of five amps flowed in the secondary circuit with three volts across the igniter, which then reached about 2600 F. in one second. The valve 110 is part of a thermostatic control including a fluid filled bulb 104 in the oven, and a control knob 112, and a cam 116 coupled to knob 112 operates a switch 114 in the transformer primary circuit. In another embodiment, Fig. 1 (not shown), a conventional valve replaces the thermostatic valve 110 while an oven thermostat of the fluid filled bulb type operates a switch in the transformer primary circuit. If more than one burner is provided, the corresponding igniters are connected in series.
Patent GB-615633-A (GB)
Title: Improvements in cramps for assembling bars for tubular metal constructions
IPC: E04G7/14
Filed: 1945-10-24
Abstract: 615,633. Scaffolding clamps. HERITIER, H. Oct. 24. 1945, No. 28075. Convention date, Oct. 26, 1944. [Class 20 (ii)] A clamp for assembling two tubular bars crossing one another at right angle: without their being ir contact with each other comprises a part 1 with U-formations for the reception of the bars 2, 2c the arms of each U having tapered slots 5 for the reception of oppositely tapered wedge lugs 4 on cap members 3, 3a. The clamping action is obtained by driving the cap members 3, 3a, in opposite directions along the tube held thereby. The surfaces of the cap members which make contact with the tubes may be serrated. The cap members are permanently associated with the part 1 by rings 6.
Patent GB-485195-A (GB)
Title: An improved clamping device for holding sheets or plates together during rivetting, and the like operations thereon
IPC: B25B31/00
Filed: 1936-10-16
Abstract: 485,195. Clamping plates for riveting. MYERS, S. J. Oct. 16, 1936, No. 28114. [Class 83 (iv)] Plates are held together during riveting or the like operations by a tool comprising a pin b which has a recess at one side forming a shoulder b<4> near its free end and which slides freely in a holder a having a projection a<2> which fits against the side of the pin remote from the recess, the cross sectional dimensions of the projection and of the recessed part of the pin being together substantially equal to the dimensions of the free end of the pin, and the clamping pressure being produced by a nut c on the screw-threaded end of the pin b which bears against the end of the holder a. A set screw e prevents relative rotation between the pin and holder. A plate f closes the gap between the holder and the pin adjacent the plates d. Specification 452,358 is referred to.
Patent GB-281257-A (GB)
Abstract: 281,257. I. G. Farbenindustrie Akt.- Ges. Nov. 25, 1926, [Convention date]. Tetrahydronaphthostyril,its homologues and substitution products.-Tetrahydronaphthostyril is prepared bv the catalytic hydrogenation under pressure of naphthostyril, advantageously in the presence of a solvent or suspending agent. The ring containing the carbonyl group is alone hydrogenated, giving a product which is useful as an intermediate for the manufacture of dyestuffs and pharmaceutical compounds. A metal of the iron group, particularly nickel is preferably employed as catalyst. According to the example, naphthostyril mixed with decahydronaphthalene and a little nickel catalyst, is treated with hydrogen under 20 atmospheres pressure at a temperature rising to 150‹ C. The Specification as open to inspection under Sect. 91 (3) (a) refers also to the homologues and substitution products of naphthostyril as starting materials. This subject-matter does not appear in the Specification as accepted.
Patent GB-1101609-A (GB)
Title: A process for preparing dyeable polyolefins
IPC: C08K5/5415
Filed: 1965-07-02
Abstract: Articles such as filaments made of compositions comprising a polyolefin and an ester of a silicic acid, a silicol or an ester of a silicol, are dyed with basic dyestuffs.  The polyolefin may be polyethylene or polypropylene.  Examples describe the dyeing in baths containing Rhodamin B, acetic acid and wetting agent, of filaments spun from compositions comprising polyethylene and (1 and 2) tetramethyl orthosilicate (3) tetrahexyl orthosilicate, (4) tetrapropyl orthosilicate and (5 and 6) hexamethyl trisilicate; polypropylene and (7) hexamethyl trisilicate and a mixture of polyethylene and polypropylene and (8) hexamethyl trisilicate.
Patent GB-857818-A (GB)
Title: Apparatus for heating fine-grained materials
Inventor: HELMING BERND
IPC: F27B7/20
Filed: 1959-08-18
Abstract: 857,818. Preheating and charging granular materials. POLYSIUS G.m.b.H. Aug. 18, 1959, No. 28247/59. Class 51 (2). In apparatus for preheating and charging cement raw materials of the type comprising serially interconnected cyclone separators through which the material passes generally in counterflow to hot kiln gases, the centre lines of the cyclone separators 2, 3, 4 and 5 are inclined at approximately 45 degrees to the vertical forming a zig-zag, Fig. 2 (not shown), and the exhaust gas pipes 6a, 6b, 6c between cyclones are straight. The last exhaust gas pipe 6d leads to a fan or a filter, and raw material enters the system through a pipe 7d. The exhaust dust pipes 7, 7a, 7b and 7c are approximately at right angles to the exhaust gas pipes, pipe 7 forming a short feeding preheated material into the kiln 1. The exhaust dust pipes leave the bottom of their respective cyclones as wide, radial, tapering pipes narrowing to enter the exhaust gas pipes, Fig. 3 (not shown). Alternatively, Fig. 4 (not shown), each dust exhaust pipe may leave its cyclone tangentially. The diameter of the cyclones may decrease upwardly.
Patent GB-1142034-A (GB)
Title: Improvements in or relating to seals
Inventor: BARKER JOHN
IPC: F16J10/02
Filed: 1966-06-24
Abstract: 1,142,034. Seals. ENGLISH ELECTRIC CO. Ltd. 13 June, 1967 [24 June, 1966], No. 28290/66. Heading F2B. In a piston end cylinder device comprising a piston 11 having a rod 15 passing with a sliding fit through an end wall 13 of the cylinder 12, leakage of gas is prevented when the piston is at the initial end of its stroke by a surface 16 on the piston engaging a surface 18 on the end wall. The surfaces 16 and 18 are frusto-conical. The device may be a compressor or a motor.