baber/WOPTO huggingface dataset:
Patent GB-264213-A (GB)
Title: Improved machine which may work as an internal combustion engine, steam engine or as an air compressor
IPC: F02B75/28
Filed: 1925-10-12
Abstract: 264,213. Keith, W. F., and Keith, J. A. Oct. 12, 1925. Pump-actuating mechanism. - An engine or pump comprises two pairs of oppositely moving pistons working in two pairs of cylinders; the lower pair of cylinders 4, 5 are parallel and side by side, the upper pair 6, 7 being similarly arranged with respect to each other but turned round on a vertical axis with respect to the lower pair. Passages 18, 19 connect each of the lower cylinders and its corresponding upper cylinder, so that when working as a two-strokecycle internal-combustion engine the pairs of pistons 8, 11 and 9, 10 work with one combustion chamber each. The lower pistons are connected directly to one of the two crank pins 1, 2 through crossheads 13, 16 and connecting rods. The piston 10, working with the piston 9 in a common combustion chamber, drives on the crank pin 1 through a piston rod 20, a sleeve 21 sliding on a fixed guide 22, and a return rod 23 coupled to a cross-bar 24, which is connected to a bar 18 on the crosshead 13 by outside rods 26, 27. A slipper 25 is attached to the cross-bar 24 to slide on a fixed guide. By similar straightline-motion linkwork the upper piston 11 is coupled to the crank-pin 2. The cylinders 4 and 6 and 5 and 7 may be interconnected instead of being arranged as shown.
Patent GB-221967-A (GB)
Title: Improvements in or relating to perambulators, and the like
IPC: B62B7/10
Filed: 1923-10-12
Abstract: 221,967. Headley, F. H. Oct. 12, 1923. Perambulators.-In folding baby-carriages of the kind convertible from recumbent to sitting position wherein the superstructure is formed of a number of links and the foot-rest comprises a U or like shaped link 9 pivoted at the rear of the chassis and adapted to be supported in either of two positions, the supporting member comprises U or like shaped brackets 11 secured to the front members 4 of the baby carriage. The part 9 is pivoted to upwardly-directed extensions 10 of the chassis 1 so as to be spaced from the chassis.
Patent GB-1220364-A (GB)
Title: Improvements in metal film resists for the etching of oxides
IPC: H01L21/00
Filed: 1968-05-28
Abstract: 1,220,364. Etching. GENERAL ELECTRIC CO. 28 May, 1968 [29 May, 1967], No. 25426/68. Heading B6J. [Also in Division H1] Tapered side walls of an aperture in a silicon dioxide layer on the surface of a silicon semiconductor element 10 are achieved by coating the silicon dioxide layer 11 with a film 12 of a metal, such as gold, which is resistant to attack by etchants for silicon dioxide, and forming a tapered-walled aperture in the metal film, then etching in a bath to remove the exposed silicon dioxide layer whilst simultaneously removing the metal film at a uniform rate by means of an electrolytic deplating process. Hydrofluoric acid is used as the silicon dioxide etchant. The aperture in the metal film is produced by applying over the film a layer of polymeric material, containing a photolytically decomposable etchant for the metal, and a photographic positive transparency having zones of graduated transparency where the tapered walls are to be, so that during exposure to activating radiation chemically reactive species in the layer are generated in concentrations proportional to the radiation level at the layer which etch an aperture with tapered walls in the metal film 12. In an alternative embodiment, the metal film 12 with its tapered-walled aperture is directly deposited on the surface of the layer 11 of silicon dioxide by immersing the element and oxide layer in a liquid comprising a photolytically reactive material which is the source of the metal to be plated, and irradiating the surface of the oxide layer with activating radiation through a negative transparency when a metallic film is deposited on those areas of the oxide layer which are illuminated, the thickness of the film being dependent upon the intensity of illumination.
Patent GB-425418-A (GB)
Title: Improvements in or relating to the delustring of textile materials
IPC: D06M13/192
Filed: 1933-09-14
Abstract: Textile materials, for example, artificial silks, natural silk, and linen, are delustred by fixing a water-insoluble aluminium salt of an aromatic o-dicarboxylic acid on the materials. According to one method, the fibres or fabrics are treated with a solution of a water-soluble aluminium salt and, simultaneously or subsequently, with a solution of a salt of an aromatic o-dicarboxylic acid. Preferably the process is carried out by passing the materials through a bath containing a water-soluble salt of aluminium and a water-soluble salt of an aromatic o-dicarboxylic acid, and simultaneously or subsequently warming. Suitable acids are phthalic acid, and 1,4-dichloro-, tetrachloro-, a - and b -nitrophthalic acid.  The following examples are given:--(1) stockings of viscose artificial silk are treated in a bath containing sodium tetrachloro-phthalate and basic aluminium formate; (2) linen goods are treated in a bath containing sodium phthalate and aluminium formate; (3) viscose artificial silk goods are passed through a cold solution containing sodium phthalate, aluminium sulphate, and sodium acetate, and steamed; (4) Skeins of cellulose acetate artificial silk are treated in a solution of sodium 1,4 - dichlorophthalate and basic aluminium formate.  Specification 391,773 is referred to.  The Specification as open to inspection under Sect. 91 refers also to printing the materials with a paste containing the said aluminium salt and acid, and includes an example in which a fabric is printed with a paste containing tragacanth, sodium phthalate, aluminium sulphate, and sodium acetate, dried and steamed.  The use of the aluminium salts of a  - hydroxy - and a  - amino - phthalic acids also is referred to.  This subject-matter does not appear in the Specification as accepted.
Patent GB-462697-A (GB)
Title: Improvements in or relating to the manufacture of abrasive-coated fabric
IPC: C09D161/06
Filed: 1935-09-13
Abstract: In making abrasive-coated fabric or paper, the abrasive grains are secured to the backing by an adhesive comprising an aqueous dispersion or emulsion of a synthetic resin containing a small proportion of a dispersing or emulsifying agent such as casein or glue.  Suitable synthetic resins are liquid or solid phenolic condensation products, alkyd resins or vinyl resins.  Mixtures of solid and liquid resins may be used.  The dispersions may be of the resin-in-water or water-in-resin types.  Solid resins may be dispersed in molten condition or first dissolved in an organic solvent, which is then removed from the dispersion, e.g. by heat. Rubber-in-resin or resin-in-rubber dispersions may be dispersed in water.  Specification 302,430, [Class 60], is referred to.ALSO:In making abrasive-coated fabric or paper the abrasive grains are secured to the backing by an adhesive comprising an aqueous dispersion or emulsion of a synthetic resin containing a small proportion of a dispersing or emulsifying agent such as casein or glue.  Suitable synthetic resins are liquid or solid phenolic condensation products, alkyd resins or vinyl resins.  Mixtures of solid and liquid resins may be used.  More than one coating of adhesive and abrasive grain may be applied and a sizing coating of adhesive may also be used.  The dispersions may be of the resin in water or water in resin types.  Solid resins may be dispersed in molten condition or first dissolved in an organic solvent, which is then removed from the dispersion, e.g. by heat.  Rubber in resin or resin in rubber dispersions may be dispersed in water. The base material may be pre-sized or otherwise waterproofed. Specification 302,430, [Class 60], is referred to.
Patent GB-873213-A (GB)
Title: Production of carbon monoxide
IPC: C01B32/40
Filed: 1958-08-08
Abstract: Carbon monoxide is produced by contacting carbon dioxide with a cobaltous oxide and molybdic trioxide mixture catalyst at 800 to 1600 DEG F. in the presence of carbon or a normally gaseous hydrocarbon. Carbon may be in the form of coal, coke, lignite, tar, tar sands, carbonaceous shales or asphalts and the hydrocarbon may be a gas containing mainly methane or natural gas. Solid carbonaceous materials should have a particle size of 1.0-120 microns and the catalyst, which may be supported on granulated alumina, zirconium, magnesia, silica, silicaalumina, kieselguhr or floridan but preferably a - or g -alumina, consists of cobaltous oxide and molybdic trioxide in molar proportions 10:1 to 1:10 and has a particle size of 120 to more than 1000 microns.  Reaction pressures may be subatmospheric to 1000 psig. The rate of flow of carbon dioxide gas should be 20 to 400 v/v/hr. The process may be operated in a number of ways:-(i) (Fig. 1, not shown) CO2 and methane may be premixed, heated to 800-1600 DEG C., and simultaneously, or subsequently, passed through a bed of catalyst to produce CO in admixture with H2, or hydrocarbon may be heated to 800-1600 DEG C., and contacted with the catalyst to deposit carbon thereon and yield pure H2, CO2 being subsequently passed through the coked catalyst to yield pure CO; (ii) (Fig. 2, not shown) CO2 is the fluidising gas for a bed of catalyst and coal to yield CO + H2 from which solids are separated in a cyclone, while solid is removed from the bed and catalyst separated from ash for recycling; (iii) (Fig. 3, not shown) preheated CO2 is passed through a bed of catalyst and carbon.
Patent GB-257765-A (GB)
Title: Improvements connected with flying boats and seaplanes
IPC: B64F1/22
Filed: 1925-10-13
Abstract: 257,765. Blackburn Aeroplane & Motor Co., Ltd., Bumpus, F. A., and Rennie, J. D. Oct. 13,1925. Land wheels.-In an arrangement for fitting seaplanes or flying boats with removable trollywheels which facilitate the movement of the craft on decks or landing places, an open-ended tube is fitted in the body of the boat or float and an axle is passed through the tube, forks 4 carrying wheels 5 being applied to the extending ends of the axle. The wheels are forced against the deck or supporting surface to bring the axis of the wheels beyond the dead centre and so raise the craft by a lever 6 which is suitably locked in its depressed position. The craft is fitted at the bow and stern with small skids or wheels.
Patent GB-739073-A (GB)
Title: Froth flotation process
Inventor: HALL REGINALD HAROLD
IPC: B03D1/008
Filed: 1952-10-14
Abstract: Orthophthalic acid diesters of alkanols having 2 or 3 carbon atoms or of lower alkoxy derivatives of such alkanols are added to mineral pulps as frothing agents.  Examples include orthophthalic acid diesters of ethanol, isopropanol and propanol, di(3-methoxypropyl) orthophthalate, di-(2-ethoxyethyl) orthophthalate and bis-(2 : 3-dimethoxypropyl) orthophthalate. Other frothing agents which may also be present include 1 : 1 : 2 : 2-tetraethoxyethane, 1 : 1 : 2 : 2 - tetranormalpropoxyethane, 1 : 1 : 2 : 2 - tetrabutoxyethane, 1 : 1 : 3 : 3 - tetranormalpropoxypropane, 1 : 1 : 4 : 4 - tetramethoxybutane and 1 : 1 : 5 : 5 - tetraethoxypentane. Collecting agents which may be used include ethyl xanthate, dithiophosphates, phosphocresylic acid,, diphenyl thiourea, fatty acids and fatty acid soaps.  Copper-containing sulphidic ores, ores of lead, zinc, iron, molybdenum, nickel and gold, and coal may be treated.
Patent GB-227516-A (GB)
Title: New or improved variable-speed power-transmission mechanism
IPC: F16H33/14
Filed: 1923-10-15
Abstract: 227,516. Stone & Co., Ltd., J., and Midgley, A. H. Oct. 15, 1923. Variable-speed epicyclic gearing is controlled automatically by flywheels k, k<1> which rotate with the gearing and are alternately accelerated and decelerated in consequence of relative speed between driving and driven elements a, c. The driving-element a with a disc d form a cage supporting planet gears e which mesh with a sun gear f fast on the shaft b of the driven pulley c. Cranks g, g<1> carried by the gears e engaged with cam slots h in the flywheels k, k<1>. The inertia of the flywheels resists relative motion within the gearing so as to yield an elastic variable drive. The slots h may be shaped so that energy passes to and fro between the flywheels. More than one pair of flywheels, or a single flywheel, may be used, and eccentrics may replace the cranks. According to the Provisional Specifications, the planetary cranks &c. may be connected to the flywheels by links.
Patent GB-766543-A (GB)
Title: An improved tower crane
IPC: B66C23/84
Filed: 1953-09-17
Abstract: 766,543. Tower cranes. ANDERSON, J. Sept. 17, 1954 [Sept. 17, 1953], No. 25734/53. Class 78 (4). The load winch and means for luffing the jib of a tower crane are both driven from a power unit, e.g. a motor 3, Fig. 1, carried by a supporting structure 1 on which the tower 2 of the crane slews. As illustrated, the motor 3 also drives a winch operating a trolley 25a and slewing-gear for the tower. The structure 1 is supported by steerable road-wheels 2. The motor 3 drives through bevel-gearing a central hollow shaft 2 which, through bevel gearing 10a, 11 and a clutch 9, as well as reversing gear (not shown), drives a pinion 8 meshing with a slewing ring 7 on the tower. A pinion 14 on the shaft 12 meshes with each of four pinions 15 carried by the tower and respectively driving a winch 22 operating a load line 25, a pinion 19 meshing with a rack 20 on the jib 6 to slew it, a further winch for opening and closing a grab, a hoisting winch, and traversing gear for the hoist trolley 25a. All these motions are controlled from a cab 26 either electrically or by suitable mechanical transmission which may include, Fig. 4, a number of concentric spindles 27 passing through the shaft 12 and rotated to wind cables 31 on to pulleys 30 by axial movement applied to rings 28 engaging helical splines on the spindles. The jib 6 is balanced by a counter-weight 32 suspended from cables 33 passing over pulleys 35 and secured to a suitable shaped surface 34.
Patent GB-1430783-A (GB)
Title: Steam iron
IPC: D06F75/18
Filed: 1973-05-30
Abstract: 1430783 Steam irons GENERAL ELECTRIC CO 30 May 1973 [31 May 1972] 25771/ 73 Heading D1A In a steam iron with a steam generating chamber 24 in the soleplate 10 fed through a drip valve 32 from a water tank 20; a dump valve 56 is provided which may be operated by a control 64 to empty the tank 20 and purge the iron of lint and deposits in the steam passages or by a control knob 28, which preferably controls the drip valve 32, to momentarily open the dump valve 56 to provide an extra surge of steam to the soleplate. A strand 50 directs water from the dump valve -onto the soleplate adjacent a heating element 18. The control 64 actuates the stem 68 of the dump valve through a connector 30, and a member 66 with an arm 86 at its end. The "up-for-steam" control 28 actuates the dump valve through the connector 30, which is pivotal in the control knob 28 and a bore 72 in the stem of the water drip valve 26, engaging a recess 76 at the top of the member 66. As the member 66 is depressed by the knob 28 the connector 30 engages a cam surface 82 of a fixed bracket 80 and is thus moved off the recess 76, (Figs. 3, 4 not shown) when the dump valve 56 is closed again by a return spring 58. The water valve 26 is closed by depressing the control knob 28 further when the connector 30 engages the bottom of the bore 72 in the valve stem and a recess 84 in the control knob 28 engages the handle of the iron. A further control 40 may be provided to actuate a water spray 38 manually.
Patent GB-796537-A (GB)
Title: Improvements in fluid pressure amplifiers
IPC: F15B9/10
Filed: 1956-08-23
Abstract: 796,537. Fluid-pressure servomotor-control systems. GENERAL ELECTRIC CO. Aug. 23, 1956 [Aug. 24, 1955], No. 25809/56. Class 135. A fluid-pressure and motion amplifier comprises a cylinder 10, Fig. 1, within which is located a piston 17 loaded by a spring 18 and integral with an output transmission shaft 19 and with a hollow input shaft 20. The central passage 21 of the input shaft 20 has an inlet 22 within the cylinder 10 and an external outlet port 23 which co-operates with the closing edge 26 of a cup-shaped member 25. A cam follower 29 or the input shaft 20 is retained in engagement with a cam surface 30 on a pivoted ramp 31 by a tying spring 35. The slope of the ramp 31 may be adjusted by means of the actuator rod 33. Normally the system is balanced and fluid enters the cylinder 10 via the inlet port 13 and passes via port 22 and passage 21 to the outlet 23 and the piston 17 assumes a corresponding equilibrium position. If the cupshaped member 25 is moved upwardly to cover more of the. outlet port 23 the fluid pressure below the piston 17 will increase to move the piston upwardly against the pressure of the spring 18 until the port 23 is again uncovered sufficiently for the system to attain equlibrium. Because of the action of the cam 30 and its follower 29, however, the upward movement of the piston is not straight but helical and so a movement amplification as well as a pressure amplification is obtained and imparted to the output shaft 19. The action is reversible so that if the cup-shaped member 25 moves downwardly the piston 17 is moved downwardly by the spring 18. The degree of amplification is determined by the slope of the ramp 31. The contour of the cam surface 30 may be so shaped that the movement of the output shaft 19 is proportional to any desired function of the input movement given to the cup-shaped member 25. If a signal is imparted to the actuator rod 33 as well as to the input member 25 the output movement of the shaft 19 is proportional to the product of the two input movements. In a second embodiment, Fig. 4, the inlet 43 to the cylinder 40 is above the piston 47 and the biasing spring 48 below the piston. The outlet port 53 of the passage 51 co-operates with the closing edge 56 of a slot 57 in the axially fixed cupshaped member 54 which has at its lower end a pair of diametrically opposed cam slots 58 in which are located pins 59 extending from an actuator shaft 65. Upward movement of the shaft 65 results in rotation of the member 54 to open the outlet port 53 more fully and the resulting decrease in the fluid pressure above the piston 47 allows the spring 48 to move the piston 47 upwardly, the cam and follower 61, 60 again ensuring that the piston moves in a helical path. Instead of being spring-loaded the piston in either embodiment may be doubleacting.
Patent GB-381694-A (GB)
Title: Improvements relating to moulded materials
IPC: H01B3/30
Filed: 1931-09-15
Abstract: A mixture of fibre, such as asbestos, cement, such as Portland cement and a thermoplastic material such as resin, copal, pitch, bitumen, asphalt or sulphur, is moulded with water, for example as a sheet, and allowed to set.  It is heated to diffuse the thermoplastic material through it and then impregnated with a solution of, or the constituents of, an artificial resin, and again heated to harden the resin.  In an example the composition consists of 200 lbs. Portland cement, 100 lbs. asbestos and 60 lbs. powdered pitch, and the resin is a phenolformaldehyde resin with, if desired, 5 per cent aniline oil.
Patent GB-312011-A (GB)
Title: Hygienic jug cover
IPC: A47J45/06
Filed: 1928-09-11
Abstract: 312,011. Garritt, B. Sept. 11, 1928. Lids and covers.-A cover for a jug, jar, or like vessel consists of a plate a of glass or other transparent material to the underside of which an arched spring strip b is attached by means of a threaded bolt d secured by a knob c, washers e, f, preferably being provided. The ends b<2> of the strip are splayed out to ensure good gripping contact with the interior of the vessel.
Patent GB-332790-A (GB)
Title: Improvements in and relating to closures for benzine tanks and the like
IPC: B60K15/04
Filed: 1929-08-28
Abstract: 332,790. Krauss, F. E. Aug. 28, 1929. Retaining devices below closure.-A closure for benzine tanks &c., particularly for automobiles, is formed with a cap and a filling nozzle, one part, e.g. the cap having projections e' pressed outwardly in a resilient manner to engage conical supporting surfaces h' formed on the other part, these surfaces extending for a part only of the circumference of the cap and merging into it by inclined portions b", which acting as cams, by part turning the cap, relieve, the pressure of the resilient projections thereby aiding removal. The cap may carry a transparent disc p for viewing the contacts. The device is stated to form a better sealing means the greater the vibration of the vehicle, and will act as a safety-valve in case of carburettor fires. The resilient means may be formed, alternatively, of a number of balls carried by a common spring-ring.
Patent GB-321275-A (GB)
Title: Improvements in gramophones & like instruments
IPC: G11B3/38
Filed: 1928-09-12
Abstract: 321,275. Walter, C. M., Marsh, R. G., and Charles, W. J. Sept. 12, 1928. Tone-arms.-To ensure radial tracking of the sound-box a and its stylus across the record, the tone-arm b is connected to a tube c which is guided in a fixed sleeve d arranged radially of the turntable. The tube c is fitted with rollers j adapted to traverse a rod f extending through the sleeve d. In the construction shown, the rollerspindles k are pivoted on grub-screws l so as to permit rocking of the tube c due to irregularities in the record.
Patent GB-338981-A (GB)
Title: Process for the manufacture of esters of phosphorous and phosphoric acid containing halogen
IPC: C07F9/08
Filed: 1929-08-31
Abstract: 338,981. Carpmael, A., (I. G. Farbenindustrie Akt.-Ges.). Aug. 31, 1929. Esters of phosphorous and phosphoric acids containing halogen are prepared by the interaction of a compound containing an alkylene oxide group with a phosphorus trihalide or oxyhalide. A catalyst such as iodine, ferric chloride sulphur or iron filings may be used. With phosphorus trichloride and ethylene oxide, for example, the oxygen bridge is opened, and a chlorine atom combines with a CH2- group while the phosphorus atom combines with the oxygen. Ethylene oxide can be attached in this manner up to three times, so that the neutral w-chloroethyl ester of phosphorous acid may be obtained. Examples are given of the use of ethylene oxide and phosphorus trichloride, epichlorhydrin and phosphorus oxychloride with iron filings as catalyst, and epichlorhydrin with phosphorus tribromide.