baber/WOPTO huggingface dataset:
Patent GB-918045-A (GB)
Title: Improvements in or relating to conveyor systems
Inventor: BURROWS ARTHUR THOMAS CHARLES
IPC: B65G23/44
Filed: 1959-06-17
Abstract: 918,045. Endless conveyers; rope railways. KING Ltd., GEO. W. June 17, 1960 [June 17, 1959], No. 20802/59. Classes 78 (1) and 104 (2). In a conveyer comprising an endless driven chain 11, guided in a fixed track 10, a section 12 of the chain track is mounted on a frame 13, which is provided with wheels 14 running on a fixed track 15 and which supports track plates 17 forming running surfaces for load-carrying trays or the like, and the frame is urged in the direction A by counterweights 28, 29, connected thereto by means of cables 30, to tension the chain. The track section 12 and a track plate 17 are pivotally connected at 18, 19 to corresponding track sections 20, 21 which are pivoted at 22, 23 to fixed track 10 and track plate 24, the sections 20, 21 being telescopic at 38 and supported on rollers 39. The track section 12 and track plates 17 are telescopically connected at 37 to the other fixed track 10 and track plates. Anti-friction balls or rollers 25, 26, 27 are provided around the track section 12 and pivot points 18, 22 respectively.
Patent GB-216404-A (GB)
Title: Adjustable framing or supports for centering for concrete floors, beams and the like
IPC: E04G11/44
Filed: 1923-08-17
Abstract: 216,404. McNay, J. T. Aug. 17, 1923. Moulding floors in situ.-Floor and beam centering is supported by adjustable bearers a, b, the inner ends of the two members having guides and supports d fixed to them and adapted to enter top recesses on the two members. These recesses are formed by sawing pieces from the top strips c fixed to the members. The beam centering f is supported on adjustable levers, j, l, the bearers j being secured by parts h to the ends of the adjustable floor bearers; or part of the beam mould bearer may be of angle shape to which the other arm is adjustably secured. The beam-centering bearers may be carried by links n on the ends of the floor bearers so that the angles of the sides of the beam moulds mav be varied'. When casting around metal floor joists. the beam mould bearers are adjustably supported by members p which have a multiplicity of bearing edges to give a graduated fine adjustment for depth of beam.
Patent GB-259188-A (GB)
Title: Process for the extraction of zinc from zinc-iron-silicious slags
IPC: C22B19/30
Filed: 1926-08-25
Abstract: 259,188. Alberti, E., Thielmann, M., Begas, M., Alberti, R., and Alberti, K., (trading as Vereinigte Werke Dr. R. Alberti & Co.). Sept. 29, 1925, [Convention date]. Sodium sulphate is recovered in a process in which zinc is extracted as chloride from siliceous slags containing zinc and iron by treating the slag with hydrochloric acid in the nascent state, roasting the reaction mixture with a supply of air, and lixiviating with water. In an example the finely divided slag is mixed with pulverized rock salt ,and sulphuric acid is added thereto with constant stirring. The mixture becomes crumbly and can easily be roasted with a steady supply of air. On lixiviating with water zinc chloride and sodium sulphate are dissolved out and can be separated in known manner.
Patent GB-149216-A (GB)
Title: Process and arrangement for transmitting undamped electric vibrations
IPC: H03C5/00
Filed: 1920-07-12
Abstract: 149,216. Huth Ges., Dr. E. F., (Assignees of Rosenbaum, B.). July 21, 1917, [Convention date]. Void [Published under Sect. 91 of the Act]. Electric oscillations, producing; wireless telegraphy.-In a system for the transmission of undamped oscillations, feeble independently-generated oscillations are impressed upon and amplified by one or more power valves before transmission to the aerial. A wavemeter circuit provided with a buzzer may be used as the independent source of oscillations 1. Groups of oscillations are impressed upon the grid of the power valve r, the wavelength being determined by the tuning of the circuit w, whilst the group-frequency is governed by the frequency of the buzzer s. The aerial a is syntonized to the wave-frequency. The wave meter and buzzer circuit may be replaced by a thermionic generator producing feeble oscillations. In this arrangement, a single valve having two anodes, two grids and one cathode may be used. Two or more power valves connected in parallel may be employed to increase the energy transmitted. The operating-key may be introduced in the independent-generating circuit 1, in the circuit of a power valve, or in the aerial circuit.
Patent GB-801731-A (GB)
Title: Stabilised liquid sulfur trioxide
IPC: C01B17/90
Filed: 1956-07-06
Abstract: Liquid sulphur trioxide is stabilized by incorporating therein a nitrosyl salt (NO)+X-, where X is an acid or oxyacid radical of phosphorus, arsenic, antimony, sulphur, selenium, tellurium fluorine, chlorine, bromine or iodine, or a fluoborate radical. 0.05-3 Per cent of nitrosyl salt may be used and suitable salts are fluoride, chloride, bromide, fluophosphate, bisulphate, fluosulphonate, selenate, perchlorate, fluoborate, and the monohydrate of the fluoborate.  It is stated that the nitrosyl salt is prepared by the action of nitric oxide and nitrogen dioxide on acid, e.g. NO + NO2 + 2H2SO4 = 2NOHSO4 + H2O, or by the action of N2O3 on acid, e.g. N2O3 + 2HBF4 = 2NOBF4 + 2H2O.
Patent GB-1342646-A (GB)
IPC: G03B23/02
Filed: 1971-04-19
Abstract: 1342646 Film cartridge EASTMAN KODAK CO 19 April 1971 [13 Feb 1970] 21019/71 Heading G2E [Also in Division G5] A cartridge includes a cup 312, disc 310 and core 314 for housing a coil of film 302 (or tape). As shown the core 314 has catches 316 for engaging the disc 310 and is rotatable relative to the cup 312. The leading end 304 of the film 302 is held in the tangential extension path 328 by clip 332 pivoting about pin 336 under the action of spring 340. In operation the cartridge is inserted in a projector and the disc 310 rotated until projection 350 is over outlet 330 of the cup 312. A drive wheel (not shown) enters via slot 342 and leads out the end 304 of the film, which passes through the projector's film path, reenters the cartridge through opening 352 and is engaged by the clip 332. At this point the film path moves upwards relative to the cartridge and the disc 310 returns to its initial position. The film 302 continues to pass out of, and return to, the cartridge and in so doing rotates the cup 312 with it, the returning film 302 simultaneously taking up the position it had before projection commenced. When the film 302 has been projected the core 314 is rotated so that its pivoted sector 324 grips aperture 308 in the tail end 306 of the film 302 and rewinds the film into a tight coil. When the film is sufficiently taut the clip 334 attached to the film's leading end 304 causes the cup 312 to rotate so switching the drive for the core 314 into reverse and disengaging it from the film end 306.
Patent GB-697426-A (GB)
Title: Improvements relating to rubber closures for pharmaceutical vials
IPC: B65D51/00
Filed: 1951-09-06
Abstract: A rubber stopper for a pharmaceutical vial is coated with a layer of a silicone oil which acts as a lubricant and an antifoam agent.  The oil is applied by dipping the stopper in a solution of 2 per cent of a silicone oil such as that known commercially as DC-200 or GE 9996-300 or di-methyl-di-ethoxy silicone in a solvent such as chloroform, acetone, isoamyl alcohol, benzene, carbon tetrachloride, ethyl acetate, petroleum ether, propyl ether &c. and then drying in air to remove the solvent.
Patent GB-405009-A (GB)
Title: Improvements relating to rubber mats, flooring and the like
IPC: A47L23/24
Filed: 1932-07-26
Abstract: 405,009. Mats. REDFERN'S RUBBER WORKS, Ltd., Hyde, and REDFERN, J. A., 24, Kensington Street, Hyde, Cheshire. July 26, 1932, Nos. 21077 and 24830. [Class 142 (iv).] A composite rubber mat, flooring, or the like comprising a rubber body portion 1, Fig. 2, and separately formed letters, figures or other designs 2 has metal or fibre strands or meshwork 3 embedded therein to pass through and keys together the mat proper and the letters &c. The meshwork &c., is forced into the mat during vulcanisation by a plate 5 having embossments which form air pockets in the bottom of the mat. Alternatively the mat proper and the letters may be formed from two layers 6, 7 and 8, 9 respectively Fig. 3 with a strip of cloth interposed, the composite structure being subsequently treated in a vulcanising mould.
Patent GB-1382846-A (GB)
Title: Funnels
IPC: B67C11/00
Filed: 1972-05-05
Abstract: 1382846 Funnel R L NOWAK 5 May 1972 [7 May 1971] 21140/72 Heading B1X A funnel comprises a hollow main body 11 formed of an elastomer plastic and having an opening 12 at one end and a flange 13 extending from the main body around the periphery of the opening, the flange being adapted to envelop the end of a container 14, the main body having an inclined surface 15 that can be depresseed to lift a portion of the flange from the container. The neck 16 may be provided with a cap 17.
Patent GB-620411-A (GB)
Title: Improvements in or relating to radio receivers and like electro-acoustic apparatus
IPC: H05K7/00
Filed: 1946-07-16
Abstract: 620,411. Springs. PHILIPS LAMPS, Ltd. July 16, 1946, No. 21224. Convention date, Sept. 3, 1942. [Class 108 (iii)] [Also in Group XL (c)] The resilient mountings provided for the components of an amplifier to reduce acoustic feedback are made more effective by locating the resonance frequency of the mountings above the passband of the amplifier and the resonance frequency of the mountings and component combined below the passband. Fig. 5 shows a component 31 mounted on springs 32, 33 and 34, 35 formed from a length of wire bent to form two arcuate arms joined and terminated by eyelets by which the springs are secured. The resonance frequency of the springs are made sufficiently high by using spring wire so thin that in operation the stress exceeds 70 per cent of the limit of fatigue. Preferably the plane of the spring arms is at right angles to the chassis and parallel to the side of the component to which it is secured.
Patent GB-170356-A (GB)
Title: Collapsible boat without rigid structure
IPC: B63B7/08
Filed: 1920-07-14
Abstract: 170,356. Dobbs, E. A. July 14, 1920. Rafts.-A reversible and collapsable boat or raft, of the non-rigid tYPIl comprising non-communicating air-bags connected to a flexible bottom, is formed of straight closed-ended fabric tubes 4, 5, 6, Fig. 2, connected in the form of a triangle. The bottom 7, Figs. 1 and 2, is formed by a web 7 connected to the tubes at the sides and to aprons 11, 12 at the ends. These aprons are attached to the tubes so as to give a streamline shape in the water. A fabric tube serving as keel is open at the front for inflation by water due to the forward movement of the boat. Towing flaps 23 with ropes are attached to the sides at the bow. Rowing flaps 21, aluminium row-locks 17, and rope stretchers 22 for the feet of the oarsman are also provided.
Patent GB-306788-A (GB)
Title: Improvements in and connected with reversing gearing especially for motor-boat propulsion
IPC: F16H3/00
Filed: 1928-07-23
Abstract: 306,788. Hounsfield, L. H. July 23, 1928. Reversing-gearing. - Between an internal-combustion engine and a reversing-gear is arranged a centrifugal clutch, which does not pick up drive until the engine has accelerated. The invention is specially applicable upon motorboats, where the starting torque is not heavy. The reversing lever is connected with a throttle control and a brake or other synchronizing device to facilitate reversing. The reversing-gear may be of any positive type with toothed wheels on chains, the change-over being effected by a change of mesh of gear teeth or dog clutches. In the form shown in Figs. 1. and II., a double clutch 13 is shifted by a lever 15 moving in a gate 22. The centrifugal clutch 3, Fig. IV., of known type carried by the engine fly-wheel A is normally held disengaged by a spring 9 in which the tension increases faster than the centrifugal force on weight 7 as the engine speeds up. When the control lever 15 is moved out of a notch in gate 22 to become unlocked, it turns about a pivot 16<1>, Fig. III., and so through a lever 26<1> operates a synchronizing brake, &c., 26. This same unlocking movement, as shown in Fig. V., through spring linkage 29 operates carburettor throttle 28 to slow the engine down. A hand control for the throttle is shown at 31. In changing between forward and reverse driving, the lever 15 is moved freely between positions 23 and 24, Fig. I. On release of lever 15, spring 25, Fig. III., turns it into a locking notch F. N, or R, Fig. I., and the throttle and the brake &c. are released. The brake 26 may act on either the driving or the driven shaft of the gearing, and the clutch 3 automatically opens as the engine slows down.
Patent GB-356868-A (GB)
Title: Improvements in coin-freed mechanism
IPC: G07F1/02
Filed: 1930-07-14
Abstract: 356,868. Coin-freed apparatus. GROVES, W. W., 30, Southampton Buildings, London.-(Booking Bureaus, Ltd. ; 434, Collins Street, Melbourne, Australia.) July 14, 1930, No. 21283. [Class 27.] Testing coins.-A correct coin when inserted in a slot 6 between the inturned nose portions 2, 2a of a pair of spring - controlled bell - crank levers 1, 1a, is projected across a gap behind the slot whilst a small coin or one of incorrect weight falls down through the gap.
Patent GB-647493-A (GB)
Title: Process for producing alkylated aromatic hydrocarbons
IPC: C07C2/66
Filed: 1947-08-06
Abstract: Aromatic hydrocarbons are alkylated by reaction with an olefinic hydrocarbon in the presence of an alkylation catalyst comprising a synthetically prepared, dried composite of precipitated silica-gel and at least one member of the group alumina, zirconia and thoria at a temperature sufficient to form a substantial yield of alkylated aromatic.  The olefine may be prepared in situ.  Temperatures specified are 175-455 DEG  C. and pressures of 34-136 atms. are preferred.  Alkali metal ions should be washed out of the silica hydrogel obtained in the preparation of the catalyst since their presence reduces the effectiveness of the catalyst.  In general 2-6 per cent of the metal oxide should be present in the composite. Calcining of the catalyst at, e.g. 455-540 DEG  C., or higher, leads to maximum activity.  Catalysts may be reactivated by passing an oxidizing gas over them at above 425 DEG  C., e.g. 760-870 DEG  C., without affecting their activity.  Mono-, di- and polyalkylated derivatives may be obtained depending on the reaction conditions, a molar excess of aromatic, e.g. 2-4 times that of olefine, favouring the production of monoalkylated compounds.  In examples: (1) a catalyst containing approx. 92 per cent silica and 8 per cent aluminium on a dry basis is prepared by precipitating silica from water-glass solution with hydrochloric acid washing with water and aluminium chloride solution, the purified silica is then suspended in aluminium chloride solution, ammonium hydroxide added until alkaline, the precipitate filtered off, washed, dried, granulated and calcined at approx. 500 DEG  C., subsequently a mixture of 32.8 mol. per cent of propene and 67.2 per cent of benzene is passed for four hours at 277 DEG  C. and 129 atmos. over some of the above prepared catalyst yielding cumene; in (2) using the same catalyst and feed stock at 449 DEG  C. and 102 atmos. for six hours cumene is also obtained.
Patent GB-482248-A (GB)
Title: Improvements in and relating to recoil-absorbers for firearms
IPC: F41A21/36
Filed: 1937-08-03
Abstract: 482,248. Gun recoil-absorbers. GALLIOT, N. J. A., and CHABLE, J. A. V. A. Aug. 3, 1937, No. 21366. Convention date, Aug. 3, 1936. [Class 92 (ii)] Relates to muzzleattachments for checking recoil as described for example in Specification 454,003 in which convergent-divergent nozzles b, c, d are provided with internal helicoidal ribs b<3>, c<3>, d3, deflector surfaces c<2>, d<2>, f<2>, and external helicoidal ribs j, i, h whereby the gun gases are rejected rearwardly on to a series of conical cups or shells and thereby returned towards the front of the gun. According to the present invention, the cups or shells are formed by independent rings l which are slipped in succession round a supporting sleeve on the gun barrel by which they are maintained in place to the rear of the recoil absorber. In the form shown, the rings are supported at the rear by radial fins k<1> on a barrel sleeve k and at the front by the ribs h on the nozzle b. The rings are spaced apart by members l<2> removably attached to their dorsal faces.
Patent GB-169850-A (GB)
Title: Improved form for use in constructing concrete walls and the like
IPC: E04G17/02
Filed: 1920-07-16
Abstract: 169,850. Laing, J. W. July 16, 1920. Moulding walls in situ.-Shut. terings of boards or sheets of metal secured to a framework in which the timbers present a substantial surface for attachment to other shutters, are provided with rabbets D at their corners or elsewhere to receive scaffold needles E. Corresponding rabbets in adjacent shutters may register to form a single rabbet.
Patent GB-1069941-A (GB)
Title: Tin oxide film electrical resistances
IPC: H01B1/00
Filed: 1965-05-20
Abstract: 1,069,941. Oxide film resistors. SOCIETE D'ELECTRONIQUE ET D'AUTOMATISME. May 20, 1965 [June 2, 1964], No. 21W/65. Headings H1K and H1S. A resistor comprises a film of tin oxide doped with P-type impurity deposited on a dielectric substrate. The P-type impurity compensates for the N-type semi-conductivity of the tin oxide. The resistor is produced by atomizing a mixture of solutions containing tin chloride and aluminium chloride so that the mist passes up inside an oven on to the substrate where it is pyrolized into tin oxide. Indium, gallium and boron are also mentioned as preferred impurities.
Patent GB-186774-A (GB)
Title: Improvements in humidifiers for the internal combustion engines of motor road vehicles
IPC: F02M25/022
Filed: 1921-08-13
Abstract: 186,774. Owen, T. Aug. 13, 1921. Charge, moistening; cylinders, pipes for.-Moistened air is supplied to the induction pipe 5 from the top of the radiator 2 through a nozzle 11 and a pipe 4, 13 fitted with a receptacle 6 for arresting excess moisture, the receptacle being provided at the bottom with an absorbent pad, a permanently open drainpipe 10, and a drain-pipe 18 normally closed by a cock 19. Addition warm air may be admitted to the receptacle through a pipe 15 controlled by a cock 16. The supply of moistened air may be cut off by a cock 17, and may be regulated by a sliding-plunger 21 operated by a Bowden wire 22.
Patent GB-994358-A (GB)
Title: An electric switch device comprising two pairs of contacts adapted to be simultaneously opened or closed
Inventor: MAIS ADOLF ROLF
IPC: H01H50/64
Filed: 1961-06-15
Abstract: 994,358. Contact members for switches; electromagnetic switches. HAGGLUND & SONER A.B. June 15, 1961, No. 21580/61. Heading H2B. Moving contacts 3 and 4, for engagement with fixed contacts 1 and 2 when an electromagnet 8 attracts its armature 7, are mounted on a yoke 5 carried on a member 6 so as to be swingable about a projecting part 13 of member 6. The central part of the yoke is held against projection 13 by two blade springs 28 and 28<SP>1</SP> as shown. On opening of the contacts when member 6 is restored (by means not shown), the yoke is frictionally held in its aligned position. Friction between the blade springs serves to damp out contact bounce. As shown, projection 13 and yoke 5 have mating cylindrical surfaces, but projection 13 may be shaped to provide two or more supporting edges or points (Fig. 2, not shown). The yoke-mounted contacts may comprise the " fixed " contacts of the switch instead of the moving contacts.
Patent GB-633169-A (GB)
Title: An improved rotary arbor to which a grinding wheel is fixed
IPC: B24B45/00
Filed: 1947-08-07
Abstract: 633,169. Mounting grinding-wheels. ALLEMANN, H. Aug. 7, 1947, No. 21587. Convention date, Aug. 9, 1946. [Class 60] A grinding-wheel 13 is carried by a selfcentring holder mounted on a cylindrical portion of an arbor 2 and locked thereto in such a way that the locking action takes place substantially in a plane contained by the wheel without disturbing the axial position of the latter. The holder comprises a sleeve 4 loosely fitting the arbor and provided with a collar 5 and a threaded portion 6 to receive a nut 7, a sleeve 9 similarly provided with a collar 12, and a nut 11 which secures the wheel, and a sleeve 16 which has a tapered end to coact with a tapered portion of the bore of the sleeve 9. When the nut 7 is rotated to displace the sleeve 16 so as to clamp the sleeve 4 to the arbor and centre the sleeve 9, relative rotation between the sleeves is prevented by a screw 18 which is threaded into the sleeve 9 and has a flattened end to pass through one of a number of longitudinal slots in each of the sleeves 16 and 4. The end of the screw is received by a key-way 3 in the arbor. The collars 12 and 5 are continuously in contact during the locking operation so that the axial position of the wheel. is not affected.
Patent GB-421993-A (GB)
Title: Improvements in bolts for doors, windows and the like
IPC: E05C17/44
Filed: 1933-08-01
Abstract: 421,993. Fastenings. SMITH & SONS (STOKE NEWINGTON), Ltd., and SMITH, W., Anvil House, Matthias Road, Stoke Newington, London. Aug. 1, 1933, No. 21624. [Class 44] A sliding bolt is retracted by a pivoted handle 7 which is rotated to the full line position, and held there by a biassed catch 12. The bolt is shot by a spring or by its own weight when the handle is released.
Patent GB-1492384-A (GB)
Title: Fuel control systems for gas turbine engines
IPC: F02C9/38
Filed: 1975-03-20
Abstract: 1492384 Gas turbine engine fuel systems LUCAS INDUSTRIES Ltd 20 March 1975 [15 May 1974] 21673/74 Heading F1G A gas turbine engine fuel system comprises an engine-driven fixed displacement fuel pump 11 followed by a metering device 12, a spill valve 15  for spilling fuel from the outlet to the inlet of the pump and responsive to an increase in the pressure intermediate restrictors 13, 14 which form a fluid potentiometer across the pump to increase the spill flow and responsive to an increase in the pressure downstream of the metering device to reduce the spill flow, and means 20 biasing the spill valve to reduce the spill flow. The ratio of the effective areas of a piston 16 subject to the intermediate pressure and a piston 17 subject to the downstream pressure is the increase of the ratio of the pump delivery pressure and the intermediate pressure, whereby the forces acting on the pistons 16, 17 are substantially in balance and the spring 20 is required to exert little force. The restrictions 13, 14 have a damping effect on movement of the spill valve 15. The metering device 12 comprises a variable metering orifice responsive to the engine speed N, the compressor intake and delivery pressures P 1  and P4 and the setting # of a power demand control, and a regulator valve downstream of the metering orifice and responsive to the pressure drop across the metering orifice and the engine speed N to maintain the pressure drop substantially constant for a given engine speed.
Patent GB-138285-A (GB)
Title: Improvements in pumps or centrifugal distributors for irrigation purposes and the like
IPC: F04D29/40
Filed: 1919-09-04
Abstract: 138,285. Kiriaco, T. Sept. 4, 1919. Rotary-tube pumps; starting, facilitating. - A pump or distributor comprises a vertical tube d fitted with a foot-valve e and two or more radial arms i, each of which has at its discharge end a bend p, q set back towards the centre forming an air seal with which is combined a discharge bend m.