baber/WOPTO huggingface dataset:
Patent GB-779661-A (GB)
Title: Improvements in footvalves
IPC: F04B53/10
Filed: 1954-07-22
Abstract: 779,661. Fluid-pressure servomotor-control systems. SYKES, Ltd., H., and PAISH, H. P. S. Oct. 21, 1955 [July 22, 1954], No. 21411/54. Class 135. A foot valve for liquid lift pumps has a valve member 6 displaceable under the influence of fluid pressure to connect or disconnect the inlet 12 of a suction conduit 8 to or from the ambient source of liquid supply, e.g. via casing openings 2, and means, e.g. a float 18, responsive to changes in liquid level of the source to create a fluid pressure differential to close the valve when the liquid level falls to a predetermined height and vice versa. With the float at its normal level, suction in the conduit 8 acts via openings 16 and needle valve 21 to reduce the pressure in a chamber 13 behind the annular diaphragm 6 which then rises to connect the conduit 8 to the space surrounding the conduit and the openings 2 which will be immersed in liquid. Should the level fall the float. closes the valve 21 but allows atmospheric air to leak around the valve stem into the chamber 13 so that the diaphragm 6 closes on its seat.
Patent GB-440622-A (GB)
Title: Improvements in bearing race members, wheel hubs, and other members for securing them on shafts or axles
IPC: B60B37/04
Filed: 1935-07-30
Abstract: 440,622. Force and shrinkage fits. TIMKEN ROLLER BEARING CO., Denber Avenue, Canton, Ohio, U.S.A. July 30, 1935, No. 21568. Convention date, Oct. 6, 1934. [Class 83 (iv)] [See also Group XXIV] To reduce the tightness of fit at the ends of a wheel C or race-ring 1, on an axle B, V-shaped annular grooves 11, 10 are formed in one or both their ends, which latter are thereby provided with resilient lips. The members are shrunk or press-fitted on the axle.
Patent GB-441621-A (GB)
Title: Improvements relating to the reproduction of sounds
IPC: G11B7/00
Filed: 1934-07-24
Abstract: 441,621. Optical sound recording and reproducing apparatus. CHAMPION, G., 245, Calle Defensa, Buenos Aires. July 24, 1934, No. 21687. Convention date, July 24, 1933. [Class 40 (ii)] Sounds are reproduced by an apparatus in which two or more photo-electric pick-ups travel rapidly in succession over a record moving slowly in a direction transversely of the sound tracks. The record 24 consists of a strip of opaque or of transparent material according as to whether the sound reproduction is to be effected by the reflection of light from the record or by the transmission of light through the record, and is fed slowly over a plate 20 by a drum 17 having' teeth 18 to impart accurate feed to the record material. Rollers 19, 22 maintain the material taut while it passes over the plate 20. The drum 17 is geared to a shaft 7 which drives a shaft 3 carrying a number of photo-electric pick-ups 1 the modulated electric current from which is taken by way of brushes and commutators 2 on the shaft 3, to a loud speaker 26 or telephones. The gearing between the shaft 3 and the drum 17 is such that the shaft 3 revolves rapidly to carry the pick-ups 1 over successive tracks on the slowly advancing record material, the successive tracks together constituting a continuous sound record. The drum 17 may be replaced by an endless band and the record may be held in close contact with the drum or endless band by magnetic action or suction. The Specification as open to inspection under Sect. 91 comprises also the use of the apparatus for recording sounds by replacing the pick-ups by oscillographs and using a photographic film. This subject-matter does not appear in the Specification as accepted.
Patent GB-317970-A (GB)
Title: Improvements in transfers for use on wood or other porous surfaces
IPC: B44C1/175
Filed: 1928-07-26
Abstract: 317,970. Courmont, H. July 26, 1928. Transferring designs; transfers.-Transfers for producing designs on porous surfaces such as wood or fabric are prepared by printing the design lithographically on the gummed, or starched and gummed, surface of a sheet of unsized paper and coating the print with a solution of gum-lac, gum sandarach, and gum elemi in alcohol, preferably in the proportions of 150 parts of gum lac, 100 parts of gum sandarach, and 50 parts of gum elemi in 1000 parts of alcohol. The transfer to the wood &c. is effected by a press at a temperature of about 120‹ C., a pad of felt or flannel being interposed between the press head and the transfer. If the wood &c. surface is very rough, the back of the paper may be wetted before the pressure is applied.
Patent GB-518266-A (GB)
Title: A process for the manufacture of progesterone
IPC: C07J5/00
Filed: 1938-07-21
Abstract: 518,266. Progesterone. CHINOIN GYOGYSZER ES VEGYESZETI TERMEKEK GYARA R. T. (DR. KERESZTY & DR. WOLF) and BRETSCHNEIDER, H. July 21, 1938, No. 21705. [Class 2 (iii)] Progesterone is prepared by the oxidation of cholestenone characterized in that the oxidation takes place in the presence of sulphuric acid of a concentration greater than 50 per cent. The preferred oxidizing agents are chromic acid, chromic anhydride and chromates, and the preferred oxidation temperature between -5‹C. and +5‹C. The reaction mixture is worked up by dilution with much water followed by extraction with water immiscible solvents. A purification by means of a chromotographic separation may also be employed together with the use of ketone reagents. In examples : (1) A glacial acetic acid solution of cholestenone is introduced into an excess of strong sulphuric acid, and a solution of chromic anhydride in strong sulphuric acid is added. The oxidation takes place at -5‹C. for 4-5 hours, and the product is poured on to ice. The aqueous solution is extracted with benzene, and the benzene solution washed with caustic soda and water and evaporated. The residue is dissolved in acetone and crystallized to remove unchanged cholestenone. The acetone is evaporated, replaced by a benzene-benzine mixture, and washed with hydrochloric acid. The progesterone is extracted from the acid solution with ether and purified by a chromatographic separation. Instead of using glacial acetic acid as the solvent for the cholestenone, carbon tetrachloride may be sub- .stituted. (2) An acetic acid solution of cholestenone is added to concentrated sulphuric acid at 5‹C., and a sulphuric acid solution of chromic acid is then introduced. The oxidation mixture is poured on to ice extracted with benzene and washed with caustic soda and water. The residue after evaporation of the benzene is treated with petroleum ether and methyl alcohol and water to form two layers. After removal of unchanged cholestenone by extraction with methyl alcohol of the petroleum layer, there follows a series of extractions with benzene and methyl alcohol, finally followed by a chromatographic separation.
Patent GB-1111995-A (GB)
Title: Improvements in threaded drill rod elements
IPC: B23B31/00
Filed: 1965-05-21
Abstract: 1,111,995. Shaft and rod couplings; screwthreads. SANDVIKENS JERNVERKS AKTIEBOLAG. 21 May, 1965 [29 May, 1964], No. 31705/65. Headings F2G, F2Q and F2U. A drill rod coupling comprises a rod element with a multi-start screw-thread having rounded flanks and flattened crests, the centres of curvature of the flanks being at a greater distance from the longitudinal axis of the coupling than are the thread portions which are most remote from the coupling axis. The thread profile is symmetrical, the flank angle (v) (Fig. 1, not shown) being between 90 and 140 degrees, and preferably between 100 and 120 degrees. The flanks may be arcuate or of compound curvature. The bottom portions of the thread may be arcuate or, as shown, 25, 26, flattened, with fillet radii r joining the flattened portions to the flanks, the bottom portions being spaced apart from the inter-engaging flattened crests. The axial lengths of the flattened crests 22, 24 are between 0À05 and 0À4, and preferably between 0À1 and 0À3, times the axial distance between the centres of two adjacent crests. The lead angle is between 5 and 14 degrees, and preferably between 7 and 11 degrees. The thread form is stated to substantially reduce the torque required to unscrew the coupling. The whole of shaded section 31 may be worn away before the thread loses its effectiveness.
Patent GB-242954-A (GB)
Title: Improvements relating to the construction of bleaching guide wheels, reels, winding drums, inserted tooth gears and the like
IPC: D06B23/00
Filed: 1925-08-29
Abstract: 242,954. Lyth, J. J. Nov. 17,1924, [Convention date]. Reels.-Guide, rollers for feeding cloth impregnated with corrosive or other liquids to winding- drums, reels, &c. are built up with separated spiders 11, 12, each formed in two or more parts bolted on the central shaft. The spokes 16 are connected in pairs by webs 17 and are shaped at their outer ends to grasp separate guide-blocks, gear-teeth, &c. 20, which are secured in position by bolts 24 connecting the spiders. By substituting bolts of different lengths, blocks 20 of varying size and shape may be built into the wheel.
Patent GB-500225-A (GB)
Title: Image analyzing means with multiple-spiral discs
IPC: H04N3/04
Filed: 1937-08-06
Abstract: 500,225. Television. RADIOAKT.- GES. D. S. LOEWM. Aug. 6, 1937, No. 21715. Convention date, Aug. 8. 1936. [Class 40 (iii)] Light passes through a multiple-spiral scanning disc 8 in one focal plane of an optical system 3, 6, 7, 10, 11 after an intorcepter 42 which rotates at a slower speed in a previous focal plane and has a spiral aperture 43 uncovering one turn of the scanning spiral at a time. The intercepter has, outside the spiral, two circumferential slots, Fig. 2 (not shown), through which light passes from a common source 1 and is deviated by a prism 44 to a special photoelectric cell 45 or to the cell which produces the image currents. An adjustable gap close to the intercepter reduces the light passing through these synchronizing slots. The gap is on a fixed diaphragm 19 which defines the frame of the picture. To compensate key-stone distortion, the shaft of the scanning disc is horizontal, the optical axis is inclined to the horizontal, and the intercepter has a horizontal or vertical shaft and consists of a cone 42 of such angle that its operative part is vertical to the optical axis. The optical axis may be diverted by a mirror to reduce the total length and volume of the apparatus, Fig. 3 (not shown).
Patent GB-652810-A (GB)
Title: Apparatus and method for making corrugated rubber hose
IPC: B29D23/18
Filed: 1948-08-18
Abstract: 652,810. Moulding corrugated rubber tubes. DUNLOP RUBBER CO., Ltd., and GARSTANG, T. Aug. 18, 1948, No. 21758. [Class 87 (ii)] Corrugated rubber tube is made by fitting a rubber tube 17 over a perforated mandrel 7 on which the ends of the tube are sealed by end clamps 18, 19, the corrugations being moulded by internal expansion of the tube against slidable intermediate moulding clamps 20. Two part end clamps 18, 19 are supported by guide bars 4 and are adapted to be assembled around the rubber tube 17 on the mandrel 7 to bring the ends of the tube into sealing contact with the mandrel while permitting the tube to slide along the mandrel. The tube is fitted over the mandrel, the collars 13, 14 are slipped over and along the mandrel until they meet the ends of the tube, and set-screw 16 of collar 14 is tightened to fix the collar to the mandrel. The clamps 18, 19 and 20 are then spaced along the tube, spacer bars (not shown) being used if necessary, and the assembly of mandrel, tube and clamps is then placed in the apparatus, Fig. II. In the assembled position the clamps 20 grip the tube 17 without preventing axial movement of the tube on the mandrel, and the end clamps 18, 19 form a seal between the tube and mandrel to allow the tube to be inflated. The rigid tube 10 is then placed in position and compressed air or water is admitted through inlet 11 and holes 12 to slightly inflate the tube 17 and form bulges 41, Fig. VI. The screw 5 is then rotated to move the tube 10, rest 8 and collar 14 towards the headstock 1. The mandrel slides through the collar. 13 which, however, retains the tube 17, and the clamps are moved into contact to form the corrugations, Fig. VII. The set-screw 15 of collar 13 is then tightened and the assembly of mandrel, tube and clamps is removed to a vulcanizing chamber.
Patent GB-571796-A (GB)
Title: Improvements in and relating to magnetic core structures
IPC: H01F41/02
Filed: 1943-12-29
Abstract: 571,796. Magnetic core structures. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 29, 1943, No. 21777. Convention date, Dec. 30, 1942. [Class 38 (ii)] Each of a plurality of stacked layers forming a magnetic core consists of separate buttjointed laminations cut from magnetic ribbon, in which the most favourable magnetic direction is lengthwise, such that butt-joints, e.g. 15, 22, Fig. 1, of a layer forms an acute angle with the butt-joints of a contiguous layer, resulting in joints being overlapped by a lamination. This is effected for a two-legged core by making a diagonal cut at one end of each leg or yoke, e.g. cut 15 of leg 11 at an angle of 30 degrees with the longitudinal axis, and cut 16 at the other end at 30 degrees with the lateral axis. In assembly, the one end of a lamination abuts the other end of another lamination to form a corner and in stacking, the layers are oppositely disposed, giving overlapped butt-joints. Specification 550,191 is referred to.
Patent GB-1004398-A (GB)
Title: An improved method for the production of hollow inflatable objects from fabrics or the like
IPC: A47C27/08
Filed: 1964-05-26
Abstract: 1,004,398. Flexible containers. J. D. SERRA. May 26, 1964 [June 11, 1963], No. 21809/64. Heading B8D. [Also in Divisions A4, B5, B7 and D1] An inflatable object, such as a raft, a life-saving waistcoat or jacket, a mattress, or a container for the transport or storage of liquids, is made by laying the edges 2, 3 of fabric 1 flat one on the other, preferably after inserting an adhesively-coated reinforcing strip 4 therebetween, stitching together the fabric by a seam 5 spaced inwardly from the edges, and internally impregnating and inflating the hollow object thus formed, the edge projecting from the stitching then being folded over and cemented to the surface of the inflated object, and a protective strip 7 being finally cemented over the seam. Specification 691,707 is referred to.
Patent GB-660368-A (GB)
Title: Improvements in or relating to the production of vitamin a
Filed: 1948-08-19
Abstract: Vitamin A is obtained by reacting an alkyl ester of vitamin A acid containing up to five carbon atoms in the alkyl group, e.g. the methyl or ethyl ester, with lithium aluminium hydride under substantially anhydrous or oxygen-free conditions, hydrolysing the resulting product and extracting the aqueous mass with a solvent for vitamin A.  Purification of the vitamin A solution may be effected over weakly activated alumina.  Detailed examples are given.
Patent GB-300701-A (GB)
Title: Improvements in or relating to the heat treatment of oxidised copper ores
IPC: C22B1/08
Filed: 1927-08-19
Abstract: 300,701. Taplin, T. J., Taplin, B., and Metals Production, Ltd. Aug. 19, 1927. Dry processes of extracting copper.-In a process of the kind described in Specification 250,991 in which oxidized copper ores are heated with a carbonaceous reducing-agent in the presence of a halogen in available form, there is interposed, after the reduction-halogenation operation has been carried on for some time, an oxidizing step followed by a resumption of the reduction-halogenation operation. The operations may thereafter be repeated alternately. If native copper or copper sulphide is present in the material to be treated, the treatment may commence with an oxidation. The oxidation may be effected by admitting air or other oxidizing gas to the reaction chamber, which may be a multi-heated furnace or a rotary furnace. Specification 255,961 is also referred to.
Patent GB-335310-A (GB)
Title: An improved method of enabling pictures or the like to be exhibited in substantially natural colours
IPC: G03B33/16
Filed: 1929-07-18
Abstract: 335,310. Bernardi, A., and Raycol, Ltd. July 18, 1929. Colour kinematography. - In photography, three or more images are simultaneously made, each through a colour filter, and, in projection, the images are simultaneously projected, one or more without colour filters, and the others through colour filters. Two of the images may be projected through filters like to those used when taking them, the others being projected without filters. Each set of images is preferably contained in one usual monochrome image space, and may be diagonally arranged therein. Specification 329,438 is referred to.
Patent GB-1124026-A (GB)
Title: Mower support
Inventor: SPEISER RALPH W
IPC: A01D34/43
Filed: 1965-08-18
Abstract: The subject-matter of this specification is included in Specification 1124024.
Patent GB-412057-A (GB)
Title: Improvements in aeroplane construction
IPC: B64C3/54
Filed: 1933-08-08
Abstract: 412,057. Controlling aircraft. ZAP DEVELOPMENT CORPORATION, Dunkalk P.O., Baltimore, U.S.A. Aug. 8, 1933, Nos. 22159 and 22160. Convention dates, Aug. 8, 1932 and July 21, 1933. [Class 4.] An aeroplane is fitted with ailerons distinct from the main wing and arranged to influence the flow over the main wing in addition to the reaction upon the aileron itself as it is tilted, with or without a flap on the main wing movable to vary the airflow over the aileron. The ailerons 29 are mounted on brackets 30 with their pivots located above the upper surface of the wing a distance of about one-third of an aileron chord to two aileron chords, and with their leading edges two aileron chords in front to one aileron chord behind the trailing edge of the wing. The ailerons have rearwardly inclined arms 31 connected by rods 34 to three-armed levers in the wings connected by cables to the pilot's control, the inclination of the arms on the three armed levers ensuring unequal movements upwardly and downwardly from the mean position for equal movements of the control. These ailerons may also be arranged to float by connecting them as shown in Figs. 15 and 22 wherein arms 103 on the ailerons are linked to cranks 107 on shafts 108 which have arms 111 linked to a lever 117 on a shaft 118 capable of tilting within a vertical guide 119. The shaft 118 is connected by a universal joint to a shaft 122 rotatable by lateral movements of a control lever 125. Flaps 27, Fig. 3, normally resting beneath the trailing edge of the wing are hinged at their forward edges and are tiltable by links 21, 22 connected to nuts 20 on screws 19 universally jointed at 18 to shafts 17 driven by bevel gear 15, 16 from transverse shafts 13 in the wings. Alternatively the flaps may be moved by single links connected to nuts on screws in fixed bearings and driven from the shafts 13. Fig. 8 shows another alternative wherein the shafts 13 are screwed and actuate links 67 connected to the flaps and to nuts on the shafts 13 by universal joints. Fig. 22 shows a flap 210 connected at its forward edge to nuts 208 on screwed shafts 205 and at points 211 to links 212 so that the trailing edge of the flap always lies substantially vertically below the trailing edge of the wing.
Patent GB-269050-A (GB)
Title: Improvements in door and window fastenings and the like
IPC: E05C3/00
Filed: 1926-09-09
Abstract: 269,050. Dean, A. A. Sept. 9, 1926. Sliding bolts for windows and doors, comprise a longitudinally slotted arcuate bolt a retained by a pin d in a guide c and engaging a staple e, the guide and staple being each flush with the edge of the member to which they are secured. The bolt is operated by a handle l or a reversible knob, and is retained by a pin i entering a lateral recess j or passing through a hole in the body of the bolt. Before mounting,-the bolt is readily separable from its guide, and the recesses in the guide and staple are formed to permit the reversal of the bolt. The pin d may be replaced by a pinion engaging teeth along one side of the bolt slot, to operate the bolt.
Patent GB-500584-A (GB)
Title: Improvements in or relating to oil-fired fluid heaters
IPC: F24H1/16
Filed: 1937-08-13
Abstract: 500,584. Liquid - fuel - burning apparatus. STEPAN, K., and FURTH, W. Aug. 13, 1937, No. 22314. [Class 75 (i)] The water or other fluid flowing to the coils 1, 3 and gilled tube 2 of a fluid heater operates a motor 13 driving a pump 12 which forces air to finely perforated nozzles 15 arranged in a fuel tank 8. The air charged with fuel vapour issues from the fuel tank through nozzles 17 and mixes with the fuel rising through pipes 10 to form a combustible mixture at burners 7 heating the coils 1, 3 and tube 2. The hot water discharge pipe 16 may be led through the fuel tank and is fitted with a discharge cock 6. A thermostat controlled by the water temperature may switch in an electric motor to assist the motor 13 if the water pressure is insufficient.
Patent GB-935280-A (GB)
Title: Improvements in fire extinguishing solutions
IPC: A62D1/00
Filed: 1959-06-30
Abstract: 935,280. Fire-extinguishing. E. STUBLEY. May 25, 1960 [June 30, 1959], No. 22328/59. Class 47. A fire-extinguishing liquid consists of a saturated solution of sodium bicarbonate in water and a non-ionic type wetting-agent such as a liquid detergent.
Patent GB-1184917-A (GB)
Title: Tractor-Bowl Scraper Combination
IPC: E02F3/64
Filed: 1967-05-15
Abstract: 1,184,917. Bowl type, earth-moving scrapers. CATERPILLAR TRACTOR CO. 15 May, 1967 [15 Dec., 1966], No. 22413/67. Heading E1F. A tractor-bowl scraper combination has in the hitch between the tractor and the scraper hydro-pneumatic suspension means which allow of limited vertical yield of the bowl under given operating conditions but which cannot permit of such yielding until the hydraulic circuit of the means for raising the bowl has been activated to raise the digging edge of the bowl clear of the ground.
Patent GB-158817-A (GB)
Title: Fish drying apparatus
IPC: A23B4/03
Filed: 1919-10-20
Abstract: 158,817. Fleury, P., and Robertson, D. L. Oct. 20, 1919. Chambers; air and gases, controlling temperature, humidity, and direction of flow of; racks.- Fish is dried on racks within an enclosed room connected with a vacuum pump and a dry air supply; the racks are supported on a shaft rotated by a turbine, the boiler of which may supply steam for the operation of the vacuum and air supply pumps. Fig. 1 shows a chamber wherein fish is supported on racks carried by a plate 24 on a vertical shaft rotated by a turbine 25. The chamber is evacuated through a valved pipe 32 by a pump 31. Air is then allowed to enter through a reservoir 41 containing sulphuric acid &c., and valved pipes 44, 36; air may afterwards be forced in under pressure from the reservoir and through the pipe 36 by a pump 38; a valve 46 prevents an excessive rise of pressure in the chamber. A boiler 26 supplies steam to the turbine and to the engines 34, 39 driving the pumps. Fig. 4 shows the rack comprising fixed sections 51 and pivoted sections 52 each formed with projections which grip the fish when the sections are closed together and secured by latches 54.
Patent GB-989582-A (GB)
Title: Improvements in and relating to chain tensioners
IPC: F16H7/08
Filed: 1963-06-06
Abstract: 989,582. Tensioning driving chains. R. WINKLHOFER, and O. WINKLHOFER. June 6, 1963 [June 6, 1962; March 4, 1963], No. 22540/63. Heading F2Q. In an engine timing or other drive a chain 3 is tensioned by a replaceable slipper 5 mounted on a length 4 of spring strip bent into a substantially closed loop and having a single mounting point 7, the two adjacent ends 6, 9 of the loop having unidirectional locking engagement with each other. As shown, the end 6 forms a pawl engaging ratchet teeth 9, or converging sets of teeth 8, 9 (Fig. 3), formed on the other end of the loop 4. In a modification the ratchet teeth are formed on a plastics or rubber block in which the folded-back end of the loop is embedded. In a further modification the end 6 engages frictional ratchet rollerlocking means on the other end of the loop, the locking roller being movable along inclined slots.