baber/WOPTO huggingface dataset:
Patent GB-197382-A (GB)
Title: Improvements in display apparatus
IPC: G03B23/10
Filed: 1922-02-07
Abstract: 197,382. Apfelbaum, F. A. Feb. 7, 1922. Elements moving always in one plane, rotating.-Display apparatus, of the kind comprising a casing 27 containing a source of illumination 25 and openings in the side of the casing fitted with translucent slides 19 the elements of which are rotated with respect to one another by a motor 18, is provided with magnifying lenses 13 arranged in front of each of the double slides. In addition, light diffusing plates 24 are situated between the light and the slides 19. Speed reducing gear between the motor 18 and the slides 19 comprises pulleys 15, 17 and worm gearing on the slide casings.
Patent GB-580049-A (GB)
Title: Shedding mechanism for weaving looms
IPC: D03C1/14
Filed: 1944-02-26
Abstract: 580,049. Loom shedding-mechanism. MASCHINENFABRIK RUTI VORM. C. HONEGGER AKT.-GES. Feb. 26, 1944, No. 3607. Convention date; March 9, 1943. [Class 142 (i)] A disc segment situated beneath a heald at the side of the loom nearest to the rocker or lifting lever has flexible tension elements secured to its periphery which transmit motion to the heald upon partial rotation of the segment. A spring attached to the segment provides a bias tending to lower the heald. Tension elements are secured to a segment c at points 1, 2, 3. The element secured at point 1 is connected by way of the heald frame e to the rocker b, that secured at point 2 is connected to the opposite side of the heald frame and forms a circuit back to point 3. A spring d is engageable with any of notches 4 on a spider arm of the segment c.
Patent GB-896048-A (GB)
Title: Means for forming fluid-tight joints between parts of cylindrical containers or the like
Inventor: MONTGOMERIE GEORGE ALAN
IPC: F16J15/48
Filed: 1960-02-02
Abstract: 896,048. Pipe joints. SERCK RADIATORS Ltd. Feb. 2, 1961 [Feb. 2, 1960], No. 3616/60. Class 99(1). [Also in Group XVIII] The cover 12 of a cylindrical container 11 is secured thereto by bolts, &c., not shown, and is sealed thereon by means of resilient, e.g. rubber, rings 19 which are carried on an annular extension 15 of a rigid ring 13 slidably mounted in a recess formed within a flange 10 surrounding the container opening, the pressure within the container forcing the ring 13 outwardly so that the extension 15 enters an annular recess 16 formed in the cover, thus compressing the rings 19 between shoulders 18 on the ring and the cover and causing them to expand into sealing engagement with the flange 10 and a spigot 14 integral with the cover. A vent hole 17 allows air to escape from the recess 16 as the extension 15 moves thereinto. In a modification, Fig. 3, the container constitutes the outer casing of a heat exchanger comprising a tube plate 21. An intermediate ring 24 is disposed between the cover and the container rim flange and has opposed recesses into which the extensions of two rings 13 can move. In this case the inner resilient rings 19 seal on the peripheral edge of the tube plate. In further modifications, Figs. 2 and 4 (not shown), the outermost sealing ring is replaced by conventional sealing means between the cover and tube plate. The sealing means may be applied as a fluid tight joint between the adjacent ends of a pair of pipes.
Patent GB-703002-A (GB)
Title: Improvements in or relating to gas turbines
Inventor: GRIFFITH ALAN ARNOLD
IPC: F23R3/16
Filed: 1951-02-14
Abstract: 703,002. Gas turbine plant. ROLLS ROYCE, Ltd. Feb. 13, 1952 [Feb. 14, 1951], No. 3632/51. Class 110 (3). (Also in Group XII] In a gas turbine plant having an air jacketed annular combustion chamber, a wall of the flame tube has a plurality of circumferentiallyspaced parts each forming an outlet from the air jacket of which it forms one wall, there being a least one outlet aligned with each vane of the nozzle guide vane assembly to deliver cooling air over the surface of the associated vane. In one embodiment, Figs. 1 and 2, the downstream ends of the inner and outer flame walls 22, 23 are fluted, the flutes 22a, 23a commencing at approximately the mid portion of the flame tube and increasing in depth so that at the outlet end the depth of the flutes is equal to half the height of  the nozzle guide vanes 16. The troughs of the flutes at the downstream end abut, and the flutes are in line with the guide vanes 16 so that cooling air streams pass from the air jackets 24, 25 on to the guide vanes 16. The number of fuel nozzles 21 may equal the number of guide vanes 16 or an integral fraction thereof. In a second embodiment, the number of flutes in each flame tube wall is equal to hall the number of guide vanes and the depth of the flutes increases to the full height of the guide vanes, the flutes on the inner and outer walls being spaced alternately when assembled. In a third embodiment, the walls of the flame tube are slotted at the downstream ends, and outlet shoots are secured therein, the depth of the shoots increasing to half the height of the nozzle guide vanes and the shoots on the inner and outer walls abutting at the downstream end of the flame tube. Cooling air from the inner and outer jackets impinges on the nozzle guide vanes as in the first embodiment; the combustion gases passing between the shoots and between the guide vanes.
Patent GB-982649-A (GB)
Title: Improvements in electrical connectors
IPC: H01R3/08
Filed: 1964-01-28
Abstract: 982,649. Two-part couplings. W. R. WARWICK, and V. E. PAYNE. Jan. 28, 1964 [Feb. 14, 1963], No. 3633/64. Heading H2E. An electrical connector comprises a metallic cup 18 filled with mercury 19 which is sealed in the cup by an insulating resilient diaphragm 21. A complementary part (plug) 11, has a long contact pin 13 with a pointed end 15. When the plug 11 and contact are brought together the pointed end 15 pierces the diaphragm 21 and provides electrical contact with the mercury; external circuit terminals being contact pin 13 and connector pin 26. The plug 11 and cup 18 are located in annular recesses such as 27 and 24 respectively in bone 23 of a resilient insulating strip 22.
Patent GB-260468-A (GB)
Title: An improved pin for use in bucket dredgers and for like purposes
IPC: E02F3/12
Filed: 1926-02-09
Abstract: 260,468. Matthews, A., Warburton, H., and Dixon, E. Feb. 9, 1926. Articulated receptacles.- Hinge pins for bucket dredgers &c. have their shafts a of a suitable alloy or steel and provided with a reduced, slightly-tapered end b of oval &c. section on which a head d of the same or other alloy or steel is shrunk, a pin f or set screw further securing the head.
Patent GB-1451412-A (GB)
Title: Hydroxypropyl methylcellulose ethers and method of preparation
IPC: C08L1/00
Filed: 1974-01-28
Abstract: 1451412 Hydroxypropylmethyl cellulose DOW CHEMICAL CO 28 Jan 1974 [26 Jan 1973] 03778/74 Heading C3A A hydroxypropyl methyl cellulose, having a methoxyl degree of substitution of from 0À2 to 1À0, a hydroxypropyl molar substitution of from 1À5 to 2À2 and a total combined degree of methoxyl substitution plus hydroxypropyl molar substitution of at least 1À8 is disclosed. It may be prepared by reacting cellulose with an alkali metal hydroxide solution to give from 0À25 to 0À45 part by weight of alkali metal hydroxide per part by weight of cellulose and then reacting the alkali cellulose with a mixture containing from 1À5 to 4 parts of propylene oxide and from 0À4 to 0À8 parts of methyl chloride per part by weight of cellulose in the alkali cellulose. The propylene oxide must be present to an extent of at least double the molar proportion of methyl chloride. The methyl chloride may be added in two stages, the initial charge containing at least 60% of the methyl chloride plus all of the propylene oxide, the remainder of the methyl chloride being added later. The products are soluble in water and anhydrous methanol.
Patent GB-1488105-A (GB)
Title: Stress-relieved axle mounting for track-type vehicles
IPC: B62D55/084
Filed: 1976-01-30
Abstract: 1488105 Endless-track vehicles CATERPILLAR TRACTOR CO 30 Jan 1976 [12 May 1975] 03819/76 Heading B7H In an endless-track vehicle having a pair of track assemblies 12, 13 including track roller frames which are pivotally mounted at their rearward ends on a pivot shaft 15 and are interconnected at their forward ends by an equalizer bar, the pivot shaft 15 is mounted on the main frame of the vehicle by self-aligning spherical bearings 16, 17 which permit flexing of the shaft to accommodate toe-in of the track roller frames as they pivot about the shaft. In another embodiment the spherical bearings are mounted at the extremity of extended housings projecting outwardly of the main frame. A separate pivot shaft may be used for mounting each track roller frame instead of the common pivot shaft shown.
Patent GB-111409-A (GB)
Title: Improvements in Photographic Exposure-meters.
Inventor: DERICHSWEILER WALRAM
IPC: G01J1/50
Filed: 1917-03-16
Abstract: 111,409. Derichsweiler, W. March 16, 1917. Watches combined with photographic meters; stop mechanism.-In an exposure meter provided with scales and in which sensitive paper is exposed behind an aperture or window in an opaque plate for comparison with standard tints, relative movement between the plate and paper is obtained by means of an external finger-operated member, and a stop-watch is used. The paper is moved into position by depressing the finger piece 20<2>, Fig. 14, and the case cover is opened by depressing the crown 6<2>. A lever 68<2> is simultaneously moved to rotate a ratchet wheel 55<2> so that the end 67<2> of a spring-controlled lever leaves a cam 56<2> on the ratchet, wheel and a stop pin 64<2> is removed from the balance wheel, while a projection 59<2> on another spring-controlled lever engages a cam 56<2> to remove projections 58<1>, 58<2> from heart-shaped cams 54<1>, 54<2> on the arbors of the seconds and minute hands. The watch is stopped by a second depression of the crown, and the hands are returned to zero position by closing the case cover or by again depressing the crown.
Patent GB-288245-A (GB)
Title: Improvements in clips or like securing devices
IPC: A45F5/08
Filed: 1928-02-07
Abstract: 288,245. Renault, M. April 8, 1927, [Convention date]. No Patent granted (Sealing fee not paid). Clips.-A clip device, shown as applied to a button-hole pin, comprises a tubular support 3 to one end 2 of which one end of a flexible member, shown as a chain 1, is secured, the other end member 1 carrying a stud 5 with manipulating knob 4. A member 9 slidable within the support has an aperture 11 and a lug 10 which is guided in a slot 6 in the support, member 9 being urged to the left by a spring 12. Member 9 can be moved to the right and there held with the spring in compression by a slight rotation engaging lug 10 in a recess 7 at the side of the slot, in which position the aperture 11 registers with the enlarged end 8 of the slot. The buttonhole 13 to be clipped is placed against a support 3 and under member 1, stud 5 is inserted through opening 8 into member 9 which is then released so that the spring puts member 1 under tension to grip the button-hole against the support. As an alternative, knob 4 is formed on member 9 to which the movable end of member 1 is also permanently secured. In this form member 1 is merely slackened to insert the article to be gripped.
Patent GB-1207292-A (GB)
Title: A device for forming films of liquids
Inventor: HEIN ROLF
IPC: A63H33/28
Filed: 1969-01-23
Abstract: 1,207,292. Bubble blower. R. HEIN. 23 Jan., 1969 [25 Jan., 1968], No. 3908/69. Heading A6S. A device for forming films of liquids, comprises a container, 1, for the liquid having an outer wall at least a portion of which is compressible, and an opening in the container receiving an elongated plunger member, 12, provided with an aperture, 17, at one of its ends. On application of a compressive force to the wall of the container liquid enters the cylinder 5 (which is of rectangular cross section), through the aperture 11 and thereby causes the piston 12, which loosely fits into the cylinder 5, to rise. The plunger member thereby emerges from the container, with a film of liquid across the aperture 17, available for 'blowing into bubbles. The rim 6, of the cylinder is joined to the collar 9, of the container forming a liquid tight seal between them. The space 23, collects liquid from the cylinder and wets the plunger on its emergence from the container. The container is filled with liquid through the orifice 21, which may be closed by the screw 22. When not in use the container is closed by a lid 4, the member 18 then preventing movement of the plunger. The annular portion 16, of the plunger is provided with capillary grooves 19 and 26, which serve to accommodate the liquid film. The stop 15, moving in the slot 14, limits the stroke of the piston. Also disclosed are grooves and lands 2 and 3, which improve grip properties, and the modification of the aperture member to represent the head of an animal.
Patent GB-451597-A (GB)
Title: Improvements in ventilating fans
IPC: F04D25/10
Filed: 1935-02-07
Abstract: 451,597. Screw fans. SMALLWOOD, H. W., 112, Rectory Road, Sutton Coldfield. Feb. 7, 1935, Nos. 3919 and 17277. [Class 110 (i)] An electric motor a drives a fan e, and, through worm and worm-wheel gearing g<7> and a cross-shaft g<6>, oscillates a series of parallel deflector blades o. Two rings h, i, and bars j, form a framework to encase the fan, and support the blades o on pivots o<2>. A crank disc g drives a rod u which is pivoted to a beam t, and a rod s couples the other end of the beam with a cross-bar q which links up the blades. In a modification, the blades o are pivoted each at one end and extend forwardly of the ring h. The upper end of the rod u is pinned to a short sleeve which slides on a member which supports the framework, and a cranked arm from this sleeve is joined to a beam on the end of bar q. A friction coupling may be incorporated within the line between the wormgearing and the plate g, comprising a leather disc under light spring pressure between two collars on short shafts. A hand operated cam may be used to disconnect the coupling by axially displacing one of the short shafts.
Patent GB-605554-A (GB)
Title: Improvements relating to the synchronisation of rotary machines
IPC: H02J3/42
Filed: 1944-03-02
Abstract: 605,554. Automatic speed-control systems. PATELHOLD PATENTVERWERTUNGS- & ELEKTRO-HOLDING AKT.-GES. March 2, 1944, No. 3925. Convention date, Feb. 20, 1943. [Class 38 (iv)] A method of synchronising the speed of two rotary machines by coupling them each to an alternating current generator, comparing the derived voltages, and effecting regulation in accordance with the difference in frequencies, is characterised by the feature that the alternating current generators employed produce voltages of periodically varying frequencies. M 2  represents an electric motor required to be synchronised with a motor M 1'  the motors being coupled to A.C. generators W 1 , W 2  respectively, generating voltages the frequencies of which vary periodically, e.g. the cycle of the frequency periods may correspond to a single rotation of the driving motor shafts. The alternators are connected to a ring modulator R and the resultant is applied to apparatus such as a frequency discriminator Z of known type comprising two coupled resonance circuits, the sum and difference of the voltage at the two circuits being rectified. The regulating voltage obtained superposes a control current on the excitation current of the motor M 2  and restores the synchronism of the two machines. The speeds of the machines are made to coincide approximately, by known means, before the actual synchronism is attempted, so that only relatively small deviations exist at any instant between the frequencies of the two generators. In addition, the deviations are arranged to be always in the same sense, i.e. the speed of M 2  is always made either slightly greater than, or slightly less than, that of M 1  Synchronism can also be effected by comparing multi-phase voltages having a periodically varying frequency, whereby a rotating field corresponding to the frequency differences is produced. The voltage curves of the alternators W 1 , W 2  may have a saw-tooth, sinusoidal, or other wave form having periodic frequency variation. In a further modification a constant frequency difference between the speeds of two motors is obtained by coupling them to two A.C. generators producing voltages which rise and fall steadily within two different frequency ranges. As an alternative to the use of a ring modulator, the frequency difference can be resolved by rotating the gear wheels of a mechanical differential at frequencies related to those of the A.C. generators, the frequency difference being derived in known manner. The frequencies of the two generators can also be applied to an electrical differential to produce two fields rotating at different speeds, so that a rotor revolves at the speed of the difference of the frequencies. Specification 337,699, [Class 35], is referred to.
Patent GB-372773-A (GB)
Title: Engine starting mechanism
IPC: F02N99/00
Filed: 1931-02-07
Abstract: 372,773. Turning - gear; igniting. ECLIPSE AVIATION CORPORATION, 545, North Arlington Avenue, East Orange, New Jersey, U.S.A. Feb. 7, 1931, No. 3941. Convention date, Feb. 12, 1930. [Classes 7 (iv) and 7 (v).] In a fluid-pressure starting motor comprising cylinders 8 radially disposed about a crank case 5 and containing reciprocating pistons 9 connected to a single crank pin 16 on the crank shaft 10, the power stroke of each piston is made outwardly under fluid pressure in the crank case. As shown, the pistons 9 are provided with connecting-rods 12 each provided with an arcuate shoe 17 which bears against a sleeve 18 over a bushing 19 on the crank pin 16, the shoes 17 being retained by rings 20. Compressed air is admitted to the crank case 5 by a passage 27 and the cylinders are connected alternately to the crank case and the atmosphere by passages in the hollow crank shaft 10, which is divided by a screw .plug 33 into inlet and exhaust passages 32a, 32b and serves as a rotary valve. The path of the air to the cylinders and to an exhaust port 28 is indicated by arrows. Transmission gearing between the crank shaft 10 and the driving member 63 comprises a pinion 15 meshing with a gear wheel 37 integral with a sun gear 42, which drives through planet wheels 43 engaging a stationary ring gear 44. The planet wheels 43 are journalled on the endplate 48 of a barrel 51 connected through a multiple-plate clutch 53 to a nut 52, in which is threaded a shaft 65 splined at 67 to the hub of the driving member 63. In order to effect automatic movement of the member 63 into and out of engagement with the member 64 of an engine to be started, a two-part ring 74 is held by a spring 76 in frictional engagement with the lip 75 of an oil sealing member 73, and is provided with lugs 77 engaging notches 78 in the periphery of the member 63. The starter may be actuated manually by a hand-crank in engagement with a pin 82 on the shaft 38 of the gear wheel 37, or through a lateral shaft connected through bevel gearing 83, 85 to the shaft 38. Backward rotation of the shaft 38 is prevented by a ratchet member 89 splined to a hub 86 on the shaft and held by a spring 92 in engagement with a fixed ratchet 90. Magnetos, arrangement of.-A starting magneto 97 may be mounted at 98 on the crank case 5 and driven from the gear wheel 37 through a pinion 109 and toothed clutch members 100, 106.
Patent GB-306939-A (GB)
IPC: C07C215/76
Filed: 1929-02-06
Abstract: 306,939. Chemische Fabrik Gr³nau Landshoff & Meyer Akt.-Ges. Feb. 29, 1928, [Convention date]. N-Methyl-p-aminophenol is prepared by reduc. ing the condensation product of p-aminophenol and formaldehyde with activated aluminium in alkaline solution. Alternatively v condensation and reduction can take place in one operation, by adding formaldehyde and activated aluminium to the p-aminophenol. If sodium hydroxide is used, and the atomic ratio of sodium to aluminium is maintained at 1: 1, after acidifying with sulphuric acid and concentrating the solution, N- methyl-p-aminophenol sulphate separates almost completely from the solution of alum. The aluminium is activated by superficial amalgamation. Specification 102,834 is referred to. The Specification as open to inspection under Sect. 91 (3) (a) includes the preparation of N- methylaminophenols in general by the above process. but this subject-matter does not appear in the Specification as accepted.
Patent GB-139287-A (GB)
Title: Improvements relating to artificial illumination
IPC: F21V9/02
Filed: 1919-02-18
Abstract: 139,287. Sheringham, G. H. Feb. 18, 1919. Reflectors; glasses &c. for producing artificial daylight.-Artificial light is rendered substantially equivalent to daylight by reflecting the light from a reflector which is coloured with two or more colours so chosen and of such areas as to absorb the light rays in which the artificial light spectrum is in excess compared with the daylight spectrum. The colours may be applied by staining, printing, or attaching coloured sheets of paper or fabric in lines or patterns, and the meeting edges of the coloured areas may be serrated. Preferably, colours having simple absorption spectra, such as methyl violet and benzol green, are used. The light source 1 may be fitted with a polished metal or an opaque silvered reflector 2, so that all the light may be reflected from the coloured reflector 3. If no reflector 2 is fitted, the absorption of the rays in excess in the reflected light must be increased to compensate for the rays in excess in the direct light. The colours and proportionate areas for the reflector of a nitrogen-filled tungsten lamp are stated.
Patent GB-1016423-A (GB)
Title: Improvements in or relating to radioactive particle measurement
Inventor: DONGUY RENE
IPC: G01T7/06
Filed: 1963-01-31
Abstract: 1,016,423. Rotary conveyers. COMMISSARIAT A L'ENERGIE ATOMIQUE. Jan. 31, 1963 [Feb. 14, 1962], No. 4057/63. Heading B8A. [Also in Divisions F2 and G1]  The conveyer 1 comprises two discs 2i, 2s which are rotated together intermittently 90 degrees at a time by Maltese cross mechanism. Each of the discs has four equallyspaced circular openings each intended to receive a tablet and two adjacent openings in disc 2s when in the positions 3, 6 are connected to corresponding openings 7, 10 in the disc 2i by fixed cylindrical magazines 11m and 11d filled with tablets. Each tablet in turn is rotated on the disc 2s to the position 4 and has radioactive particles deposited on it and is then rotated to the position 5 under the scintillator of a photomultiplier 13 where its radioactivity is measured. The disc 2s then turns another 90 degrees to bring the tablet to the position 6 where it is pushed by a cam-operated piston (Fig. 2, not shown) into the top of the magazine 1Id where it descends step by step with each further 90-degree turn of the discs 2i, 2s until it emerges from the bottom and is then positioned on the opening 10 of the disc 2i. From there it is turned to the position 7 and is then pushed by a further cam-operated piston (Fig. 2, not shown) into the magazine 11m where it ascends step by step with other tablets in the magazine. On emerging from the magazine 11m it is carried by the disc 2s from the position 3 to the position 4 to complete the cycle. The time taken to complete a cycle is sufficient for each tablet to become decontaminated by natural radioactive decay.