baber/WOPTO huggingface dataset:
Patent GB-406003-A (GB)
Title: Improvements in spark-gap apparatus particularly adapted for the conversion of electric currents
IPC: H01T11/00
Filed: 1932-05-12
Abstract: 406,003. High tension switches ; preventing sparking in switches. MARX, E., 3, Rankestrasse, Brunswick, Germany. May 12, 1932, No. 13731. Convention date, May 12, 1931. [Class 38 (v).] A circuit breaker comprises two main hollow cylindrical electrodes A, D arranged in a chamber to which is supplied a stream of arcquenching gas which passes between the electrodes and through their hollow interiors to exit pipes. A movable annular electrode B is provided for conductively coupling the main electrodes and the arc produced when it is withdrawn is forced towards the axis of the electrodes and is there spread and extinguished.
Patent GB-378369-A (GB)
Title: Improvements in or relating to double-barrel guns
IPC: F41A19/20
Filed: 1932-05-12
Abstract: 378,369. Double barrelled guns. CHURCHHILL, R., Orange Street Gunworks, Leicester Square, London. May 12, 1932, No. 13737. Convention date, May 23, 1931. [Class 119.] Improved mechanism is provided to enable the two barrels to be fired in succession by one trigger or the other according to which barrel is to be fired first. The triggers are formed with webs 10 and pivoted with a pawl 12 on a bracket 9 at 10<1>. A slide 1 is mounted in the bracket and is linked to the end of a lever 3. The pawl 12 rests by a transverse pin 16 on the top of the trigger webs 10 and can engage with teeth 13, 14 on the top of the slide 1, which has a transverse pin 2 capable of engagement with projections 19, 20 in slots in the trigger webs 10. When the top lever 8 is turned to break the gun open, the locking bolt 7 pushes the lever 3 and the slide 1 back, and this is held back by the pawl 12 falling in front of the tooth 13. After the gun has been loaded and closed, either barrel can be fired by the appropriate trigger. The trigger lifts the pawl 12 off the tooth 13, and the slide 1 is moved forward by the lever 3 under the influence of a spring 6 until the pin 2 bears against the projection 19. The release of the trigger allows the pin 2 to slip past the projection 19 after which the tooth 14 is caught by the pawl 12. The involuntary pull on the trigger causes the lifting of the pawl 12 from the tooth 14, whereupon the slide 1 again moves forward until the pin 2 is stopped by the projection 20, past which it slips when the trigger is released. When the slide 1 then reaches its foremost position, a catch 22 thereon fits into notches 21 in the trigger webs and couples the two triggers together. The next pull of the same trigger as before will therefore fire the second barrel. The triggers operate on sears 32. For ordinary independent action of the triggers, the slide 1 is put out of action by being held back by a catch 27 adapted to be set by a thumb-piece 31.
Patent GB-803942-A (GB)
Title: Improvements in or relating to mild steel
Inventor: HUDDLE ROY ALFRED ULFKETEL
IPC: C22C38/16
Filed: 1956-05-04
Abstract: A mild steel which is resistant to oxidation in the presence of oxidizing gases such as carbon dioxide and water vapour at elevated temperatures contains.  Carbon 0.1 to 0.18 per cent; manganese 0.4 to 1.4 per cent; silicon 0.05 to 0.15 per cent; beryllium 0.01 to 0.08 per cent; nickel 0 to 1 per cent; copper 0 to 0.6 per cent; molybdenum 0 to 0.45 per cent; chromium 0 to 1 per cent; aluminium 0 to 1.5 per cent the balance being iron and impurities.  According to the Provisional Specification the percentages of silicon and molybdenum may be up to 0.3 and 0.6 respectively.  Specification 803,941 is referred to.
Patent GB-456530-A (GB)
Title: Manufacture of nitrogenous polyvinyl derivatives
IPC: D06P5/22
Filed: 1935-05-10
Abstract: Nitrogenous polyvinyl derivatives are prepared by reacting a halogen alkylamine with a polyvinyl alcoholate.  The products, which have an affinity for acid dyestuffs may be used for imparting to artificial fibres and other artificial products the property of being dyed with wool dyestuffs.
Patent GB-539996-A (GB)
Title: Improvements in and relating to facing elements or electrical contact plates
IPC: H01H1/023
Filed: 1940-09-04
Abstract: 539,996. Forming coherent masses from powdered metals. MALLORY METALLURGICAL PRODUCTS, Ltd. Sept. 4, 1940, No. 13849. Convention date, March 19, 1940. [Class 82 (i)] [Also in Groups XXXVII, XXIV and XXXIV] A contact plate or disc or other facing element such as a clutch facing or a bearing is composed of a pressed and sintered mixture of one or more metal powders and carbon, graphite or carbonaceous material, one face being substantially free from the carbon. Fig. 6 shows a contact disc, the lower face of which is free from carbon and may therefore be readily attached to a backing member. The upper face constitutes the contact surface. Metal powders consisting of one or more of the following metals may be used for the composition:-silver, copper, nickel, cadmium, tungsten, molybdenum. One specified composition is 95 per cent. silver and 5 per cent. graphite. The contact is made by mixing the materials, pressing them into the desired-shape and then heating in an oxidizing atmosphere with one surface protected from the atmosphere by resting on a graphite slab or by other means. At the exposed surface, the graphite combines with the oxygen and escapes as a gas, leaving a surface entirely of silver.
Patent GB-673275-A (GB)
Title: An apparatus for recording and reproducing sound
IPC: G11B15/43
Filed: 1950-06-02
Abstract: 673,275. Driving sound film, tape or wire. MEOPTA, NARODNI PODNIK, and HAMPL, J. June 2, 1950. [June 3, 1949] No. 13866/50. Class 40 (ii). In an apparatus for recording and reproducing sound on wire or tape, an hydraulic transmission system is interposed between the electric driving motor and the driven elements. The motor 14 operates a pump 13 which drives fluid through a pipe 36 to drive one or other of the fluid motors 5, 7 according whether a forward or rewinding operation is required. The motors 5, 7 have shafts 4, 6 respectively, on which the spools are mounted. For a forward operation, valve plunger 20 is pressed, Fig. 3, so that fluid from pipe 36 passes through, and drives, motor 7 and then passes out through pipe 35 and valve 44 into the storage container 8, the pressure in pipe 35 serving as a braking force on motor 5 to maintain tension in the wire or tape and pressure on magnetic heads 12, Fig. 1 (not shown). Similarly, a rewinding operation is effected by operating valve plunger 19 which reverses the action of the fluid. In the event of the tape breaking the spool from which tape is being unwound rotates in opposite direction and fluid passes through the braking motor and back into the container via discharge pipe 37. or 39, Even velocity of the tape past the transducers may be controlled by a lever resting on the tape on one of the spools whereby the speed of the motor may be varied.
Patent GB-478793-A (GB)
Title: Improvements in or relating to packages
IPC: B65D81/26
Filed: 1937-05-18
Abstract: 478,793. Packages. BRITISH CELLOPHANE, Ltd. May 18, 1937, No. 13875. Convention date, May 22, 1936. Drawings to Specification. [Class 94 (i)] A package which is wrapped in an envelope very slightly permeable to moisture, such as moisture-proofed sheeting composed of cellulose material, gelatine or casein, contains in addition to the packed goods a small quantity of a salt or a mixture of salts which is in equilibrium at the desired humidity within the package and is capable of absorbing or liberating moisture at a greater rate than that at which moisture passes through the envelope so as to keep the humidity constant. A hydrated salt is used in the case of goods requiring a high moisture content, such as baked goods, cigars and cigarettes, while an anhydrous salt is used in the case of goods requiring a low moisture content, such as biscuits, milk powder and potato chips, or the upper and lower hydrates of a salt having several hydrated forms may be used in the two cases. If the desired humidity is liable to be either above or below that of the atmosphere a mixture of the two forms of salt is used. so that the reaction may proceed in either direction. A table is given of a number of suitable salts together with the relative humidities which they are capable of maintaining. The salt is preferably finely divided to afford a large surface area, and it may be in pure form or mixed with a, filler such as kieselguhr. It may be impregnated in a porous base such as blotting paper, or it inay be applied as a layer between porous sheets. British Specification 283,109, [Class 70], and U.S.A. Specification 1,871,419 are referred to.
Patent GB-528610-A (GB)
Title: A process for refining hydrocarbon mixtures in the vapour phase
IPC: C10G17/02
Filed: 1939-05-10
Abstract: 528,610. Purifying liquid hydrocarbons. NAAMLOOZE VENNOOTSCHAP DE BATAAFSCHE PETROLEUM MAATSCHAPPIJ. May 10, 1939, No. 13984. Convention date, May 18, 1938. [Class 91] Cracked distillates or other hydrocarbon mixtures are refined by dispersing in the hydrocarbon vapours aqueous solutions of sulphuric acid and/or hydrosulphates of a maximum strength of 25 per cent. and in quantities which are practically all converted to sludge during the treatment. The best temperatures are from 90-210‹C., the usual time of contact is 3-90 sec., the pressure may be atmospheric, reduced, or raised ; steam may be injected to maintain the vapour phase and to control the concentration of the reagent ; and the process may be countercurrent or concurrent or firstly concurrent then countercurrent through a packed tower or towers into which the solution is sprayed or otherwise spread into thin films. When there are several reaction zones in series it is preferred that the temperature falls in the direction of flow and the concentration of the aqueous solution dispersed rises; solution need not be dispersed into each zone. Suitable reagents are : sulphuric acid, pure or as obtained by hydrolysis of sludge ; and hydrogen sulphates of alkali metals, aluminium, chromium, or iron. The hydrocarbons may be pretreated with alkali and acid ; and after-treated with alkali and '' doctor." In examples : (1) Gasoline is washed with soda lye and 50 per cent. sulphuric acid, and vaporized, 4 per cent. by vol. (relative to liquid gasoline) of 0.5 per cent. sulphuric acid is sprayed into the vapours, and the mixture at 137‹C. is passed concurrently through a vertical tower packed with Raschig rings made of charcoal and at such a rate that the total time of contact is 4.1 sec. (2) Cracked gasoline after washing with dilute lye and acid is treated concurrently in 2 stages in the vapour phase, first at 109‹C. with 0.5 per cent. sulphuric acid, then at 121‹C. with 2 per cent. acid, the total acid being 0.97 per cent. of the gasoline, and the total time of contact 27 secs.
Patent GB-378461-A (GB)
Title: Improvements in or relating to cigarettes
IPC: A24D3/04
Filed: 1931-05-12
Abstract: 378,461. Cigarettes. ROTHMAN'S, Ltd. and WYNER, H., 5, Pall Mall, London. May 12, 1931, No. 14018. [Class 130.] A preformed cylindrical filter plug 3 composed solely of absorbent cottonwool, impregnated or otherwise and encased in a paper or like wrapper 4, is inserted in one end of the cigarette wrapper 1 and is flush or substantially flush at its outer end with the end of the cigarette wrapper. As shown, the wrapper 4 of the plug extends into the cigarette wrapper beyond the material of the plug. The plug may be impregnated with or contain a vaporizable substance such as menthol, eucalyptus oil, perfume or other medicinal or aromatic preparation.
Patent GB-378465-A (GB)
Title: Improvements in electric cables
IPC: H01B9/06
Filed: 1931-05-12
Abstract: 378,465. Cables. CALLENDER'S CABLE & CONSTRUCTION CO., Ltd., BRAZIER, L. G., Hamilton House, Victoria Embankment, London, and FULLER, W. P., Sheelin, Lynnbank Road, Mossley Hill, Liverpool. May 12,1931, No. 14029. [Class 36.] In a cable comprising one or more conductors enclosed in a gastight sheath, the space between the conductors and the sheath is filled in part by solid insulating material and in part by compressed helium. The solid insulating material may consist of paper or cloth lapped on the conductors so as to leave interstices between adjacent turns which are filled with the gas. In cables of the kind described in Specification 358,190, the spaces between the insulated conductor and its sheath may be filled with helium under pressure.
Patent GB-296118-A (GB)
Title: Improvements in internal combustion engines
IPC: F02B23/06
Filed: 1927-05-25
Abstract: 296,118. Hemmingsen, T. V. May 25, 1927. Cylinders receiving liquid fuel. - In continuous combustion engines in which the piston is provided with an annular cavity surrounding a crown or projection on the end of the piston, the whole of the fuel is delivered substantially uniformly around the crown through an injection nozzle which delivers the jets in such directions that, on the instroke, the fuel strikes the crown and is deflected into the cavity and thence into the combustion space and, as the piston moves outwards the fuel strikes the end thereof at points gradually increasing in distance from the axis of the piston. The crown 5 is surrounded by the cavity 6 which is bounded by a collar or projec-- tion 7. The nozzle 4 may be disposed in the cylinder axis, Fig. 4, or eccentrically as in Fig. 5, in order to facilitate the flow of the cooling water around the valve housings. The crown 5 may also be eccentric, in which case the spraying holes are so arranged and of such different sizes that everv sector of the combustion chamber receives a quantity of fuel proportional to its volume.
Patent GB-711002-A (GB)
Title: Arrangement for adjusting the height over which coke ovens are heated
IPC: C10B5/02
Filed: 1952-06-03
Abstract: 711,002. Coke ovens. SOC. BELGO-LUXEMBOURGEOISE DE BREVETS BRELUX. June 3. 1952 [March 17, 1952], No. 14034/52. Class 51 (2) In a CoppÚe-type coke oven having " hair-pin " heating flues, the effective height to which the oven chambers are heated is varied by closing one set of superposed pivoted shutters, 10a, 10b and 11a, 11b disposed in the passage 8 formed in the intermediate wall 9 separating the two limbs 4 and 5 of each heating flue. The shutters are pivotally mounted in recesses formed in bricks in the wall 9 so that they enclose an open space 14 between them, and they may be provided with projections allowing of their adjustment by rods introduced into the upper flue extensions through plugged openings 17.
Patent GB-1462793-A (GB)
Title: Aqueous printing vehicle
IPC: C09D11/10
Filed: 1974-03-29
Abstract: 1462793 Aqueous vinyl aromatic polymer dispersions A E STALEY MFG CO 29 March 1974 [9 April 1973] 14048/74 Heading C3P Aqueous polymer dispersions possessing film-forming characteristics under ambient drying conditions and comprising (a) a continuous external phase consisting essentially of an adduct of an α,#-ethylenically unsaturated dicarboxylic acid or anhydride and an unsaturated glyceride oil, said adduct being neutralized with an aqueous solution of a tertiary amine in an amount sufficient to provide a water-soluble tertiary amine salt reaction product having a pH in the range 7 to 10, and (b) a non-continuous internal phase of polymer particles of polymerized monovinyl aromatic monomers having an average particle size of less than 0À4 micron uniformly dispersed in said external phase, the dispersion containing at least one to less than two parts external phase dry weight solids for each three parts by weight of dry internal phase solids, and said internal phase being at least 40% on dry weight basis and the remaining non-solids consisting essentially of water, the dispersion also containing less than 0À7 weight per cent of monovinyl aromatic monomer; may be prepared by polymerizing a dispersion of the monomer in a solution of the tertiary amine adduct salt in the presence of a persulphate catalyst, and subsequently a peroxide catalyst and a promoter until the monomer concentration is reduced to below 0À7%. The dispersions may be used for varnishing printed cellulosic articles, or may be mixed with organic and inorganic colouring agents to provide printing inks. Examples describe (1) the preparation of a polystyrene dispersion by polymerizing styrene in an aqueous solution of a triethylamine salt of a linseed oil/ maleic anhydride adduct in the presence of ammonium persulphate and then t-butyl hydroperoxide and erythorbic acid, and (2) the compounding of the product with colouring agents to give inks and (3) the use of the product as an overprint varnish.
Patent GB-552854-A (GB)
Title: Improvements in or relating to apparatus for stereophonically recording, transmitting and reproducing sound
IPC: H04S1/00
Filed: 1941-10-31
Abstract: 552,854. Binaural and directional systems. PHILIPS LAMPS, Ltd. (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). Oct. 31, 1941, No. 14069. Drawings to Specification. [Class 40 (iv)] In a stereophonic transmission or recording and reproducing system, alternate bands of frequencies are selected from the outputs of two spaced microphones by means of complementary filters and are combined in a single wireless or other transmission channel or in a single recording track. In reception or reproduction, the alternate bands are again separated by complementary filters and are fed to spaced loudspeakers. In a specific example, the range from 250 to 4,000 cycles is divided into octaves and each octave is sub-divided into three bands. The frequencies above and below this range, which contribute little to the stereophonic effect, may be retained in the outputs of both microphones and may be reproduced in separate loudspeakers. Amplifiers may be provided on either side or both sides of the filters.
Patent GB-291227-A (GB)
Title: Improvements relating to drying moulds for metal castings
IPC: B22C9/14
Filed: 1927-05-25
Abstract: 291,227. British Drying & Heating Co., Ltd., and Calder, N. G. May 25. 1927. Moulds are dried by hot gases admitted at two or more points in each mould. Hot gas, e.g. from a furnace e as described in Specification 185,320, [Class 51 (i), Furnaces and kilns, Combustion apparatus of], is supplied through a junction h, resting by feet i on the wheel mould a, to four flexible pipes n, which are connected to the rim cavity b. The gas exhausts through the cavities for spokes c and hub d.
Patent GB-141007-A (GB)
Abstract: 141,007. Relay Automatic Telephone Co., (Assignees of Betulander, G. A.). April 2, 1919, [Convention date]. Automatic exchange systems.-In a method of selecting an idle line by means of a number of testing-relays individual to the various lines, and in which the testing-relay corresponding to the first disengaged line opens the circuits of the later relays, the circuit of each testing-relay includes contacts of connecting relay so as to be opened when the corresponding line is engaged. The invention is applicable to call-finder and other systems, but is shown in connexion with a system in which relays are used to connect a subscriber's line AL1 - - AL4 through an intermediate connecting-link ML to an idle selector trunk- FL. The subscriber's lines AL1, AL3, &c. can be connected by relays B1R1, B2R1 &c. to an interrrediate line B1L1 which can be extended to the link M1L1 by energizing the switching-relay OR1, and similarly the lines AL2, AL4 &c. can be connected by relays B1R1, B2R1 &c. to an intermediate line B1L2, which is connected over the back contacts of relay OR1 to the link M1L1. The lines AL1 - - AL4 can be connected in a similar way bv relays B1R2, B2R2, OR, to the link M1L2. The link M1L2 and other similar links M2L2, M3L2 &c. can be connected by relays DR, and O2R1 or O2R2 to an idle selector trunk F2L1 or F2L2, while the links M1L1, M2L1, M3L1 &c. can be connected by relays CR and O1R1 or O1R2 to an idle trunk F1L1 or F1L2. The test relays VR1, VR2 individual to the links M1L1, M1L2 and V1R1, V1R2, &c. V2R1, V2R2, &c. individual to the selector trunks are connected in parallel, each relay VR1, say, opening the circuit of all others,.such as VR2, later in order in the same series. When a subscribers AL3, say, removes his receiver, his line relay AR3 energizes the group reiay GR, which closes circuits 3, 4 &c. for the test relays VR1, VR2 &c. Assuming that the first link M1L1 is free, and that the first selector trunk F,L, is engaged while the second trunk F1L2 is free, circuit 3 is completed over relay VR1, contacts k1 of relays BR, contacts k1 of relays C1R2, C2R2, &c. relay V1R2, to battery. Relays VR1, V1R2 energizes, opening the parallel circuits of the other test relays VR2, V1R2, and closing a circuit 5 through the operating-windings of relays OR1, B2R1, C1R2, which lock up in a circuit including their other windings and the cut-off relay UR<3> of the calling line. Relays AR3, GR, VR1, V1R2 then de-energize, the calling line being extended to trunk F1L2 over the contacts of relays B2R1, OR1, C1R2. Instead of the primary testing-relays VR1, VR2 &c. being in series with the secondary testing-relays V1R1, V1R2 &c. or V2R1, V2R2 &c., their circuit may include the contact of a relay which is only energized when there are one or more free selector trunks. Specification 18076/14 is referred to.
Patent GB-824035-A (GB)
Title: Improvements in or relating to self-sealing coke oven doors
IPC: F16J13/04
Filed: 1957-05-03
Abstract: 824,035. Coke-oven doors. LIMBERG, J. May 3, 1957, No. 14125/57. Class 55 (1). A self-sealing coke-oven door has a sealing frame 1 which is adjustable by means of cams 8 which bear on the shoulder formed by a thickend portion 7 of the frame 1, and is provided with thrust screws 14 which act on the thickened portion 13 if, due to accumulation of tar, the cams 8 are not able to ensure a proper seal. The frame 1 has elongated slots to pass the bolts 12 carrying the cams 8, and the edges 3 or 3a of the frame which engages the sealing surface 5 of the door frame 16 may form a continuation of the main part of the frame 1, Fig. 3, or be offset therefrom, Fig. 1.
Patent GB-277067-A (GB)
Title: Improvements in or relating to motor propelled road vehicles
IPC: B62D55/02
Filed: 1926-06-04
Abstract: 277,067. Dawson, Sir A. T., and Buckham, Sir G. T. June 4, 1926. Endless-track vehicles. - A motor vehicle of the kind having endless-tracks and road wheels for alternative use, the conversion from an endless - track vehicle. to a wheeled vehicle and vice versa, being effected by raising and lowering the track frames C, has the track driving- wheels D carried by arms or levers G pivoted to the vehicle chassis A and these arms carry suitable mechanism for driving the tracks. In the construction shown the arms G are pivoted at g to the chassis and enclose chain gearing f, f<1>, d driving the tracks. In this construction the road wheels B<1> also move up and down, the rear wheels being carried by springs G<1> secured to the arms G. The rear wheels are driven through chain gearing B<2> B', B<3> enclosed in casings B<5> pivoted on the hubs of the arms G. The chain wheels f, B<2> are loose on the differential shafts F<2> and are connected thereto as required by a clutch f<2> automatically operated as the tracks move up and down. The track frames C are connected to the arms G by means of pins c in the frames working in slots g<2> in the arms. Specifications 265,670, 265,688, 277,063, 277,066 and 277,068 are referred to.