baber/WOPTO huggingface dataset:
Patent GB-1088482-A (GB)
Title: Improvements in or relating to inverters
IPC: H02M7/538
Filed: 1965-05-14
Abstract: 1,088,482. Inverting. SUD - AVIATION SOCIETE NATIONALE DE CONSTRUCTIONS AERONAUTIQUES. May 14, 1965 [May 15, 1964], No. 20441/65. Heading H2F. [Also in Division H3] An inverter has two oscillators 1, 2 whose outputs are either added or subtracted to give the final output Vs. The first oscillator 1 comprises a single transistor oscillator, whose frequency is determined by resistor Rh and capacitor C, driving an output stage through an amplifier. The output is also fed to a transformer a of a phase comparator which also receives through a transformer b the final output Vs. The phase comparator produces at E, F a directcurrent signal which controls the second oscillator 2. The second oscillator differs from the first only in that its frequency control circuit Rh, C is opened to take the control signal from the comparator. The inverter may be compounded to give a constant current output by means of a current transformer e.
Patent GB-407865-A (GB)
Title: Improvements relating to water heating apparatus
IPC: F24H1/18
Filed: 1933-07-20
Abstract: 407,865. Mounting burners. GILBERT & BARKER MANUFACTURING CO., Cold Springs Avenue, West Springfield, Massachusetts, U.S.A. July 20, 1933, No. 20492. Convention date, Aug. 3,1932. [Class 75 (i).] A door 33 on a water-heater casing supports an oil burner 40 of the perforated combustiontube type, fuel being supplied from an inverted bottle 43 through a pipe 47 entering a chamber 49 in the door hinge 34, whence the oil flows by pipe 50 to the burner. Air holes 51 in the door 33 are situated below the pipe 50. The burner may be automatically lit or extinguished in known manner according to the temperature of the water in the heater. The burner is adjusted to the horizontal position on three legs.
Patent GB-335975-A (GB)
Title: Improvements in apparatus for separating solids from liquids
IPC: B04B3/00
Filed: 1929-07-04
Abstract: 335,975. Woodall-Duckham (1920), Ltd., and Duckham, A. M. July 4, 1929. Machines for separating liquids from one another, or from solids, by density; by straining; baskets or drums; frames, tables, to which the articles are secured mechanically.-The rotating filter screen is surrounded by a, plate on which the finer particles carried through the screen are collected by centrifugal force. The screen A rotates with the shaft B and liquid fed into the hopper C is caused to pass through the screen. The larger particles stopped by the screen A drop into the hopper L. The fine particles carried through the screen by the passage of the liquid are collected on the plate D, which may rotate with, or at a different speed from, the screen A. These finer particles collect in the annulus F and may be dropped into the hopper L from time to time. The plate D may be perforated and provided with a second filter screen, in which case it is surrounded by a plate for deflecting the liquid into the launder H. The liquid builds up in the chamber K and is collected by pipes G into a launder H and fed to a channel J.
Patent GB-259893-A (GB)
Title: Improvements in and relating to jigger conveyors
IPC: B65G27/00
Filed: 1926-02-06
Abstract: 259,893. McWhinnie, J. Feb. 6, 1926. Jigging conveyers. -In connecting means for adjacent sections of troughing d of the kind in which lugs projecting at the end of each section - are held together 'by links passed over them, the lugs d<1> are tapered and the links, g are correspondingly tapered. The links are held in place by wedges h passed through slots in the lugs.
Patent GB-1140879-A (GB)
Title: High-strength, wettable aluminum foil and process for making same
IPC: B21B47/04
Filed: 1966-05-10
Abstract: 1,140,879. Water-wettable aluminium alloy foils. AMERICAN METAL CLIMAX, Inc. 10 May, 1966 [14 May, 1965], No. 20614/66. Heading E1K. [Also in Division B3] A high-strength, substantially fully workhardened, 100% water wettable aluminium alloy foil, is made from an alloy consisting of not less than 99% aluminium and not more than I % alloying elements. The foil is from 0.00025"-0.0005" in thickness and it may be colour printed on one side and vinyl coated on the other or it may be extrusion coated with polyethylene.
Patent GB-732349-A (GB)
Title: Relief valves in air ducting
Inventor: MORTIMER NOEL REGINALD FORTESC
IPC: F16K17/04
Filed: 1951-08-31
Abstract: 732,349. Valves. VOKES, Ltd. July 29, 1952 [Aug. 31, 1951], No. 20632/51. Class 135. A relief valve for use in air ducting comprises a valve plate 11, Fig. 1, having a flange 16 and secured by a set-screw 29 to a tube 12 slidably mounted in a spider 4 secured to the duct and a stationary plate 18 having a flange 17 and fixed to a spindle 20 guided in the tube 12 and connected by a cap nut 22 to the spider. The valve is urged towards its seat 1 by a spring 26, the flange 16 sliding with slight clearance over the flange 17 to form a dashpot to reduce instability effects due to pulsations produced by the fan or blower. When air is sucked through the duct, the valve plate 11 is mounted inside the duct and the valve opens on a lowering of pressure within the duct. When air is blown through a duct 33, Fig. 2, in the direction of the arrow, it normally passes through a filter 32 but, on the filter becoming choked, the valve 11 opens to admit unfiltered air into the duct.
Patent GB-621873-A (GB)
Title: Treatment of coke oven gas
IPC: C10K1/10
Filed: 1946-07-10
Abstract: <PICT:0621873/IV (b)/1> Olefins are separated from coke oven gas containing hydrogen and small amounts of olefins and acetylene by selectively absorbing the olefins and acetylene in an aqueous solution containing 25-35 per cent by weight of silver nitrate, and sufficient ferric nitrate and free nitric acid to keep the silver acetylide complex formed in solution and to prevent precipitation of silver.  The preferred solution contains 31 per cent of silver nitrate, 7-13 per cent of free nitric acid, and 10 per cent of ferric nitrate based on the weight of silver nitrate, a suitable solution having the composition: silver nitrate 31, nitric acid 11, ferric nitrate 3.2, and water 54.8 per cent.  The olefins are separated from the solution by distilling under vacuum, and the silver acetylide present, whose preparation forms the subject-matter of Specification 616,319, [Group III], precipitated with mercuric nitrate as a mercury-silver acetylide, the preparation of which forms the subject-matter of Specification 616,318, [Group III]. The silver nitrate solution is recycled to the absorption while the precipitate is decomposed by heat and oxidation to recover the mercuric nitrate. Coke oven gas containing ethylene, propylene, acetylene and hydrogen enters at 10 and is compressed to about 150 p.s.i., cooled, and passed up a tower 20 against the absorption solution, exit gas being expanded and burnt.  The rich solution passes to expansion chamber 30, released gas being returned to line 10, and thence to stripper 38 with heater 44, olefins being distilled off under a pressure of about 4 1/2 inches of mercury.  Lean solution leaving at 49 is largely recycled to the absorber by line 58, while a quantity containing acetylene in amount slightly greater than that absorbed in one pass through absorber 20 is fed by line 66 to precipitator 68 together with a solution of mercuric nitrate and nitric acid from line 70 in amount slightly less than required to precipitate all the acetylene. The precipitate is led by line 72 to a heater 74 while the silver nitrate solution is recycled by line 76 to the absorber.  Heater 74 comprises steam coil 82, reflux condenser 86, and air inlet pipe 80. The regenerated mercuric nitrate, in solution with silver nitrate, nitric and nitrous acids, is fed to line 70.
Patent GB-151144-A (GB)
Title: Improvements in or in connection with change speed gearing
IPC: F16H3/36
Filed: 1919-08-22
Abstract: 151,144. Sturgess, F. W. Aug. 22, 1919. Variable-speed toothed gearing comprises a pinion 7 on a swinging and sliding arm 9 coacting with a member 1 having toothed steps, 2, 3, 4 connected by spirals 5, 6 to facilitate change of speed. The pinion 7 is connected to a feathered shaft 10 by a gear 14, and the end 11 of the arm 9 is guided in a slotted plate 13. The changes of speed are effected by a power driven shaft 17 having worms 16 engaged by a pin 15 on the arm 9. The driving and driven shaft of the gearing are 21 and 22 respectively. The shaft 17 and with it the member 1 are driven through a reversing - train 24, 29, 27, 25 and chain 18 operated by a double clutch 26 so as to allow the worms 16 to be used for changing speed in both directions. Another reversing-train 33, 30, 34, 35, 36, 31 operated by a clutch 32 is provided between the shaft 10 and the shaft 22. The clutches 32, 26 are operated simultaneously if the shaft 22 is not to be reversely driven, but means are described for operating the latter alone for reversed driving. The shafts 21, 22 may be connected directly by a clutch 44, Fig. 2. The clutches 32, 26 are connected by links 42, 43 to a lever 41, which is operated to select the direction of speed change by rocking a lever 37, Fig. 3, towards and from the gear case 23. Movement of the lever 37 at right-angles rocks a lever 45, which brings the pin 15 into engagement with a worm 16, and so starts the speed change operation.
Patent GB-990444-A (GB)
Title: Door seal construction
IPC: B61D3/16
Filed: 1963-05-23
Abstract: 990,444. Refrigerator vehicles. FRUEHAUF CORPORATION. May 23, 1963 [July 5, 1962], No. 20678/63. Heading B7B. An access door 16 for a refrigerated vehicle body is provided with a seal 30 having a number of tongues 50, 52, 54 which engage the tapering surface 22 of the door frame to form dead-air cavities. The seal is preferably formed of polyurethane foam covered with an outer layer of polyvinylchloride. An outer seal 80 is also provided.
Patent GB-628922-A (GB)
Title: Improvements in or relating to trimmer condensers
Filed: 1947-07-30
Abstract: 628,922. Variable condensers. AIRMEC, Ltd., JONES, V. A., and PIKE, E. G. July 30, 1947, No. 20697. [Class 37] A variable condenser comprises a tubular outer electrode 10 and a tube or rod 20 serving as an inner electrode slidable axially therein, the clearance between the two being at least partly filled by a solid dielectric 39 (e.g. polythene, polystyrene, or a ceramic). The dielectric 39 is rigidly secured to one or other of the two electrodes. Several such condensers are supported in an inverted metal channel-shaped member 16, the fourth side being composed of an insulating strip 12, e.g. of paxolin, to which are secured the outer tubes 10. The inner rods screw into " speed-nuts 23, tongues 28, 29, of which grip the top limb 18 of the member 16 and a sheet 31 to which the whole assembly is fixed. Alternatively, the member 16 may be the usual way up, the paxolin 12 then bridging its top, the assembly otherwise being exactly as shown in Fig. 1.
Patent GB-148933-A (GB)
Title: Apparatus for, and method of, signalling by means of sound
IPC: G08B3/06
Filed: 1920-07-10
Abstract: 148,933. Bull, A., and Lunde, T. H. April 11, 1916, [Convention date]. Locating sounds; audible signals.-Sound signalling apparatus for warnings on ships or on shore is provided with an arrangement, depending on Doppler's principle, to enable an observer to determine the bearing of the apparatus relative to himself. In the form shown in Fig. 2, a whistle 1 is mounted on a hollow arm (not seen) projecting at right-angles to the hollow shaft 14 which is driven by gearing from the shaft 4, so that the whistle 1 describes a circle in a vertical plane. This plane turns through one revolution to every sixteen, say, of the whistle, the frame 3 being geared to the shaft 4 for this purpose. The ports 13, 15 are so designated that steam is admitted to the whistle from the pipe 12 during only half of each revolution of the shaft 14, and the operator supplies steam to the pipe 12 during only half a revolution of the frame 3, beginning, say, when the whistle 1 points north. An observer will therefore hear groups of eight blasts, and owing to the Doppler effect each blast will be of rising, level, or falling pitch according to the position of the observer relative to the plane of rotation of the whistle. By counting the number of rising or falling blasts which precede or follow one of level pitch in each group, the observer can infer his bearing with respect to the apparatus. In the form shown in Fig. 5, a bell 20 is rotated at the end of an arm 21, and two clappers 26 are moved into the path of the bell when compressed air is supplied to the cylinders 27, 30 through the pipe 29, and hollow shaft 28. A two-way valve 31 is geared so that the pipe 29 is connected to the shaft 28 during alternate revolutions only of the bell, which consequently emits pairs of knells. The shaft 28 is geared to rotate at 1/32 the rate of the bell, and compressed air is supplied to the pipe 29 during half a revolution of the shaft, so that groups of eight pairs of knells are heard. The pitch of the first knell of a pair will be higher than, equal to, or less than that of the second, according to the angle between the direction of the observer and the line through the two clappers 26. An observer can infer his bearing as before. For signalling the course which a ship is steering, code groups of whistle blasts may alternate with the directionindicating groups described above.
Patent GB-424765-A (GB)
Title: Improvements in magnetic cores
IPC: H01F1/14
Filed: 1933-07-24
Abstract: 424,765. Electromagnets. N KEKYUSHO, KINZOKU ZAIRYO, 75, Katahiracho, Sendai, Japan. July 24, 1933, No. 20876. Convention date, April 8. [Class 35] [See also Group XXXVI] Cores for electro magnets, loading coils, &c. are mad( of pieces of fine wire the length of each piece being from 15 to 500 times its diameter, insulated and arranged longitudinally. Soft iron or permalloy wire À01 cm. in diameter may be employed. The pieces of wire may be arranged in bundles 2, 21, 2<11> placed end to end to make a straight core, as shown in Fig. 2, a ring, or a polygon, or the pieces may be arranged parallel to each other, but overlapping. The pieces should be insulated at both sides and ends, an oxide coating, enamel, rubber or the material known under the Registered Trade Mark " Bakelite " may be employed.
Patent GB-1506073-A (GB)
Title: Vehicular steering-column switch
IPC: B62D1/16
Filed: 1976-05-20
Abstract: 1506073 Mounting switches SWF-SPEZIALFABRIK FUR AUTOZUBEHOR GUSTAV RAU GmbH 20 May 1976 [22 May 1975] 20880/76 Heading H1N The housing 20 of a vehicle steering column switch operable by a switch lever is provided with a bearing sleeve 21 having a seat 27 for a bearing 30 positioned between the steering column 26 and a surrounding steering tube 10, the sleeve 21 being securable to the steering tube 10 by a bayonet connecting 11, 23 and being provided with longitudinally directed spring portions 29 projecting beyond the outer circumference of the sleeve 21 so that they are compressed against the steering tube 10 when inserted therein. In one embodiment, the sleeve 21 is provided with three circumferentially spaced studs 23 which are engageable in L- shaped bayonet recesses 11 in the steering tube 10, and with a stud 22 on a spring tongue portion 17 which is engageable in an opening 16 in the steering tube 10. A longitudinal groove (31, 32) is provided on each side of each of three circumferentially spaced, integral springs 29. The locking spring 17 may be replaced by three further springs 29 (Figs. 5 and 6, not shown) which engage with the bayonet recesses 11 in the steering tube 10.
Patent GB-459460-A (GB)
Title: Improvements in or relating to day-beds and the like
IPC: A47C17/04
Filed: 1935-07-24
Abstract: 459,460. Bolting. FINESTONE, H. G., 23, Gildart Street, Liverpool. July 24, 1935, No. 20985. [Class 89 (i)] [See also Group XIV] A detachable headboard is connected to a divan or bed by means of flanged screw-threaded sockets 2 fitted in the frame 1 of the divan, headed screws 4 screwing into the sockets 2, slots 6 extending from the bottom edge of the head - board 5 through which the screws 4 pass, and large washers 7 of dished form upon which the heads of the screws 4 bear, and which distribute the pressure over an area of the head-board.
Patent GB-1313697-A (GB)
Title: Additives for clothes driers
IPC: D06F58/30
Filed: 1970-05-01
Abstract: 1313697 Additives for clothes driers UNILEVER Ltd 1 May 1970 [2 May 1969 17 July 1969] 21022/70 Heading D1P A method, for applying an adjuvant to fabric, in which damp fabric and a composition, comprising the adjuvant and a diluent medium are added to a hot air fabric drier during the operation of which the fabric is mechanically agitated, and the drier is operated to dry the fabric. The diluent medium acts as a distributing agent and the composition, which may be particulate, is added to the drier together with, or shortly after the addition of the fabric. The composition may be present on a backing or mounting strip or sheet, which is fastened inside the drier before the addition of the fabric. In a second embodiment of the invention, the diluent medium may comprise a solvent or an aerosol propellant, and the composition is applied to the internal surfaces of the drier before the addition of the fabric. The diluent medium may comprise any one or more of: urea; propylene glycol; ammonium carbonate; silica gel; a condensate of an alkyl alcohol and ethylene oxide which melts at drier temperatures i.e. 20-95C; a quaternary compound of the formula [N(R 1 R 2 R 2 R 3 )] y X where R 1 =C 1 -C 4  alkyl group, R 2 =C 10 -C 14  alkyl group, R 3  is either R 1  or R 2 , X is an anion and y is the valency of X; or a low molecular weight water soluble innocuous carboxylic acid e.g. citric, tartaric or gluconic acids. The composition additionally comprises a waxy carrier having a softening point between 20 and 95C. The adjuvant which may be a softening agent, is either a quaternary ammonium compound of formula [N(R 1 R 2 R 3 R 3 )] y X where R 1  is a C 16 -C 20  alkyl group, R 2  is a C 1 -C 4  alkyl group, R 3  is R 1  or R 2 , X is an anion and y is the valency of X, or the reaction product of 2 moles of a C 15 -C 19  fatty acid and 1 mole of a diamine of formula: where R 5  is a C 1 -C 3  divalent hydrocarbon radical and R 6  is a C 1 -C 3  hydroxyalkyl group. Other adjuvants which may be used in conjunction with the spreading agents are (i) optical brighteners e.g. disulphonated diaminostilbene compounds or triazole compounds (ii) antistatic agents, (iii) germicides e.g. halogenated salicylanilides, hexachlorophene, neomycin sulphate or benzalkonium quaternary compounds (iv) Body agents e.g. carboxymethylcellulose hydroxymethyl cellulose, starch polyvinyl acetate and (v) Soil release agents e.g. polyacrylic polyvinyl alcohol compositions.
Patent GB-627384-A (GB)
Title: Improvements in tiltable steam-jacketed boiling vessels
IPC: A23G3/04
Filed: 1947-08-01
Abstract: 627,384. Mixing appliances. STERN, C. A. Aug. 1, 1947, No. 21034. [Class 86] A steam-jacketed vessel tilting to discharge is provided with a stirrer which is mounted on an inclined shaft passing through the lower portion of the vessel wall and supported by a bearing outside of and secured to the vessel wall. A spherical vessel 1 provided with a steam jacket 5 is pivotally mounted on trunnions 7 in supporting pillars 8. Steam is admitted to the jacket 5 through the trunnions 7. A stirrer having two arcuate blades 10 is mounted on a shaft 11 passing through the lower portion of the vessel wall and carried in a bearing 12 and oscillated by bevel gears 13, 14. A hand-wheel 9 and gears, not shown, operate to tilt the vessel for discharging. This movement also disconnects the bevel wheel 13 from the bevel wheel 14 and stops the drive of the stirrer. Instead of bevel wheels 13, 14, a friction drive may be substituted. Reference has been directed by the Comptroller to Specification 627,420.
Patent GB-379063-A (GB)
Title: Improvements in combined switches and wall connectors
IPC: H01R13/707
Filed: 1931-07-23
Abstract: 379,063. Plug couplings. LUNDBERG & SONS, Ltd., A. P. and PEGG, G., 477, Liverpool Road, Holloway, London. July 23, 1931, No. 21073. Addition to 327,021, [Class 38 (i), Electric couplings &c. [Class 38 (i).] In a combined switch and plug coupling of the type wherein the switch cannot be switched on until the plug has been pushed home, and the plug cannot be withdrawn until the switch has been switched off, the plug part has standard plug pins, i.e. plain unmodified solid or split pins, and is gripped in the socket by a cam device. As shown, a socket 7 for an earthing pin 19 is formed with a slot 11 in which is pivoted at 13 a cam 15 the edge 17 of which is clear of the socket when the switch is off. The tail 21 of the cam 17 is received in a recess 24 in a locking plate 23 which forms an extension of a U-shaped yoke 25 pivoted on the pivots 27 of the blades 29 of a tumbler switch 3. When the switch is put on, the.yoke 25 and plate 23 are rocked about the pivots 27 by the action of the blades 29 on pins 31 which lie in notches 33 in the yoke 25. Until the plug has been pushed home, the switch is locked by a lever 43 pivoted at 45 and extending into a notch 49 in the plate 23. The lever 43 carries a spring 51 connected at both ends to the lever and passing through a hole in the tail-piece 21. When the plug is pushed home, the lever 43 is depressed, and the plate 23 is then free to move, so that the switch can be put on. At the same time, the spring 51 is stressed, so that the edge 17 of the cam is caused to grip the plug pin, which cannot then be withdrawn until, by turning off the switch, the cam has been returned to its inoperative position by contact of the plate 23 with the tail-piece 21. Fig. 5 shows a modified construction in which the lever 43 is replaced by a bar 61 fixed to a plunger 63 in the socket. Until the plug has been inserted, the free end of the bar 61 lies in the notch 49 of the plate 23 and locks the switch. Insertion of the plug depresses the plunger 63 and bar 61 against the action of a spring 67, and unlocks the switch. The spring 51 is normally in stressed condition and is connected to a projection 69 on the side of the socket block. A rotary switch may be provided instead of a tumbler switch, and the cam may be caused to grip one of the current-carrying pins.