baber/WOPTO huggingface dataset:
Patent GB-1322948-A (GB)
Title: Aircraft yaw control system
IPC: B64C27/12
Filed: 1970-08-21
Abstract: 1322948 Rotary wing aircraft; anti-torque rotors CANADAIR Ltd 21 Aug 1970 [24 April 1970] 40364/70 Heading B7W [Also in Division F2] An aircraft has two coaxially mounted contra-rotating rotors 8, 12 and a yaw control system which comprises first and second rotational elements 24, 27 drivingly connected to each of said rotors and to first and second outputs 15, 16 of a differential gear-box 13, an input shaft 14 for said gear-box and a clutch 30 to control the relative amounts of torque delivered to the rotors to vary their relative rotation and their net torque on the aircraft, all to effect yaw control thereof. Rotors 8, 12 are mounted through sleeves 7, 11 to hubs 5, 9, carrying ring gears 25, 29 through which drive is transferred from the first rotation element i.e. idler 24 and from a second rotational element i.e. idler 27 through another idler gear 28. The idler gears 24, 27 rotate at different speeds and are interconnected, in a first embodiment, by the variable clutch 30 capable of transferring torque through first and second shafts 31, 32 and a rigid link 34. The clutch may be mechanical or electromechanical or preferably of the magnetic dry particle type actuable to transfer torque by an electric current, a biasing current is also used to equalise the torque of the two rotors, so allowing control of the net torque on the aircraft. In a second embodiment Fig. 3 (not shown) first and second shafts (37, 38) connect both the idler 24 and a pinion (39), driven through pinion (40) from the input shaft 14, to the clutch, torque from the input 14 being transferred to idler 24 by controlled energization near a selected biasing current level. In a third embodiment, an additional clutch arrangement is driven from an extension of shaft 14 through an hollow output shaft 16 and controls torque transfer to the idler 27.
Patent GB-1085632-A (GB)
Title: Improvements in or relating to telescopes
Inventor: HUETHER GERHARD
IPC: G02B27/64
Filed: 1964-10-05
Abstract: 1,085,632. Sighting levels. CARL ZEISS JENA VEB. Oct. 5, 1964, No. 40473/64. Heading G1F. [Also in Division G2] A telescope having a reticle 16 and an automatic sighting-line stabilizing device comprising a pendulum mirror 4 is provided with means which simultaneously rotates the reticle 16 and the telescope objective about its optical axis through an angle of 180‹ and the sighting-line stabilizing device about a vertical line through an angle of 180‹. The mirror 4 is silvered on both sides and is suspended by wires 23 from a bevel gear 19. The gear 19 is rotated by means of a knob 18 to bring either of the reflecting surfaces 25, 26 of the mirror into an operative position facing the telescope objective 2. A focusing lens 3 and the objective 2, which carries the reticle 16, are mounted in a tube 15 to which is secured a bevel gear 17. This gear 17 engages the bevel gear 19 so that as the mirror 4 is rotated through 180‹ the objective 2 is simultaneously rotated through 180‹ about its optical axis. Light passing through the objective 2 is reflected back by the mirror 4, and the reticle 16 is viewed superposed on the target by means of a system of prisms 5, 6 and lenses 7, 8, 9. In use, two readings of the position of a target image with respect to the reticle image are observed, viz. with the objective 2 and the mirror 4 in positions having an arcuate separation of 180‹. The means of the two readings then illuminates errors introduced by inaccuracies in the telescope system. The objective 2 and reticle 16 may be adjustable at right angles to the optical axis of the lens so that the reticle may be superposed on the target. In a modification the mirror 4 is mounted tn a frame fixed to the bevel gear 19, the mirror being pivotable about a horizontal axis.
Patent GB-975940-A (GB)
Title: Improvements in or relating to the production of colour photographic images
Inventor: RAMAIX MAURICE ANTOINE DE
IPC: G03C7/34
Filed: 1959-11-30
Abstract: 2, 6-Di-t-butylphenol-4-sulphonic acid is prepared by adding 2, 6-di-t-butylphenol to concentrated sulphuric acid and pouring into ice/water.  After extraction with ether, barium carbonate is added, the barium sulphate filtered off, and the filtrate evaporated.  The barium salt is dissolved in water and treated with sodium sulphate to give the sodium salt.  2, 6-Diphenyl-4-chlorophenol is prepared by diazotizing 2, 6-diphenyl-4-aminophenol with sodium nitrite in hydrochloric acid and treating the diazonium salt with cuprochloride in hydrochloric acid.  Specifications 880,862, 975,928, 975,930 and 975,939 are referred to.
Patent GB-1099068-A (GB)
Title: Improvements in and relating to conveyors
IPC: B61B10/02
Filed: 1966-09-12
Abstract: 1,099,068. Conveyers. J. M. LEACH. Sept. 12, 1966, No. 40581/66. Heading B7L. A load-handling conveyer, such as of the type described in Specification 928,359, comprises an endless series of driven trolleys 10 connected by linkages 20 and each having wheels 14 and 16 running on and against a divided track 18, and free trolleys 42 each normally releasably suspended beneath a driven trolley and having wheels 44, 46 or sliders, wherein is provided a diverter 54 (Fig. 3), comprising two curved track sections 50 carried by arms 52 pivoted at 56 to the track 18 so as to be selectively movable manually or by air cylinders into the free trolley path for engagement by the free trolley which is thereby released from the driven trolley and diverted along fixed curved track sections of a side track, and wherein is provided a connector 82, (Fig. 7), comprising similar track sections 50 curved at 83 and selectively movable to direct free trolleys under gravity into position under a driven trolley 10 for engagement therewith. In an embodiment, a suspension hook 36 is indexably pivoted to the driven trolley 10 (or to the free trolley 42) and is rotatable by engagement of bars 34 thereon with arms 68, 70 and 68A, 70A on the arms 52, and a loop 40 is rigidly or pivotally fixed to the free trolley 42 (or to the driven trolley). Each free trolley 42 is provided with a preset coded control which co-operates with a receiver control on each diverter 54. In another embodiment, a pair (or more) of free trolleys support via swivels a common load carrier and are engageable by adjacent or spaced driven trolleys. Each hook 36 is spring-biased about a hinge to one side of each loop 40, and is rotated into alignment with the loop by cams on the free trolleys 42 which engages one of the followers on the driven trolleys 10.
Patent GB-1113906-A (GB)
Title: Luminescent compositions
IPC: C09K11/77
Filed: 1966-09-12
Abstract: A luminescent composition of single-phase fluorite crystal structure consists essentially of Th and Eu cations and O and F anions in amounts such that the maximum solubility of EuF3 and ThF4 in ThO2 are not exceeded.  The Eu content should be in the range given by <FORM:1113906/C4-C5/1> to 0.05 preferably 0.01, the exact upper limit depending on the temperature and F/Eu ratio. Above the upper limit the single phase fluorite crystal structure will no longer be obtained. but a luminescent composition of the latter diluted with compositions of other crystal structures.  The F/Eu ratio should be 1.5 to 4 approximately, preferably 3.  Methods of preparation include heating dry mixtures of thorium and europium oxides and fluorides in the range 900 DEG  to 1600 DEG  C., preferably 1300 DEG  C. preferably in an inert moisture-free atmosphere, e.g. N2 or A, high pressures, e.g. 15 to 20 atmospheres at the higher temperatures. In a specific example ThO2 and EuF3 are heated under 15.3 atmospheres pressure to 1000 DEG  C. over 2 hours, held for 24 hours and cooled in 3 hours.  The properties of several samples are described. Exposure to short wave U.V. (e.g. 2537 <\>rA) from a low pressure mercury discharge, X-rays or cathode rays causes bright red luminescence; X-ray intensifier screens and colour T.V. tubes are mentioned.
Patent GB-1510199-A (GB)
Title: Stranding machine for and method of making electric cable
IPC: H01B13/02
Filed: 1975-10-03
Abstract: 1510199 Method and apparatus for stranding cables LEONISCHE DRAHTWERKE AG and KUNSTSTOFF-UND-KABEL-MASCHINENBAU GmbH & CO KG 3 Oct 1975 [5 Oct 1974] 40676/75 Heading D1T A method of stranding a cable in a stranding machine, Figs. 1 and 5, which has, in succession in the operating direction of the machine, a core wire supply reel 2, strand element supply reels 10, fliers 15 associated with the supply reels 10, a drawing device 23 for drawing, under tension, material from the reels 2 and 10, a stranding yoke 22 and a take-up reel 19 on which the stranded cable is wound, comprises the following steps (a) rotating the stranding yoke 22 with a predetermined constant r.p.m. with the stranding yoke axis in alignment with the axis of the take-up reel 19; (b). rotating the take-up reel 19 with a variable r.p.m. that in a function of the coil diameter of the cable on the take-up reel, the r.p.m. of the stranding yoke and the twist length; and (c) rotating the strand element supply reels 10. A single electric motor may be used to drive the reel 19, the yoke 22 and the supply reels 10. In Figs. 1 and 5, however, a motor 21 drives the reel 19; a motor 22' drives the yoke 22; and motor 16 drives the supply reels 10. The fliers 14 are driven by the strand elements 17 and are braked mechanically or electrically for generating a drawing tension in the strand elements 17. Between the drawing device 23 and the take-up reel 19 there is a computer into which data relating to the r.p.m.'s of the stranding yoke 22, the take-up reel 19 and the momentary twist length are fed. By virtue of the fact that the supply reels 10 can be driven such that the r.p.m. of each flier 15 is synchronous with the r.p.m. of the stranding yoke 22, a 100% reverse twist is achieved in the strand elements 17 supplied by the reels 10. By varying the speed of the fliers the reverse twist may be varied between 0 and 100%.  A coil guiding unit 26 is axially displaceable to traverse the stranded cable onto the take-up reel 19. Alternatively the reel 19 is axially displaceable. There may be a flyer associated with the core supply reel to insert a reverse twist in the core strand.
Patent GB-1405286-A (GB)
Title: Apparatus for storing web or filamentary material
IPC: D03D47/00
Filed: 1972-09-01
Abstract: 1405286 Weft supplying; gripper shuttle looms SULZER BROS Ltd 1 Sept 1972 [2 Sept 1971] 40697/72 Heading D1E [Also in Division D8] An accumulating device for web or filamentary material, e.g. plastics, metallic or glass fibre material, or polypropylene weft material 7 fed from a roll 12 to a loom, comprises a container 21 at least one wall of which is in the form of one pass of an endless driven belt movable to advance the material within the container. Both side walls of the container may include an endless belt (27), (27a) Fig. 6 (not shown), trained around guide rollers 25, 26 and tensioning rollers (31) (31a) and driven by a motor 15, the belts engaging the material edges to move the material through the container. The motor also drives feed rollers 16, 18, situated at an entry aperture of the container, at a higher circumferential speed than it does a roller 13 engaging the roll 12, thereby tensioning the portion 7a. The spacing of the side walls is adjustable. A detector 41 senses when the accumulator is full and slows or stops the motor 15 until the excess material has been fed to the loom.
Patent GB-1377171-A (GB)
Title: Flame resistant seals
IPC: B29C65/00
Filed: 1970-08-26
Abstract: 1377171 Joint-making packing; joining tubes; tubes DUNLOP HOLDINGS Ltd 26 Nov 1971 [26 Aug 1970] 40920/70 Headings F2B F2G and F2P  Flame-resistant resilient sealing rings comprising a transversely compressible tube joined end-to-end include a tubular metal wire braid, a layer of asbestos fabric or braid and an outer flame-resistant polymeric material, e.g. fluoro-  carbon rubber. In examples; (i) A tube of P- shaped cross-section (Fig. 1) comprises a cylindrical metal wire braid 1, an asbestos cloth 2 whose edges are interleaved by a thin strip of unvulcanized fluorocarbon rubber, and a ply 3 of unvulcanized fluorocarbon rubber. The assembly is subsequently cured. (ii) A cylindrical tube (Fig. 2) comprises an asbestos braid 4, a wire braid 5 and a fluorocarbon layer 6. Tubular articles may be formed on a mandrel, with the braid being partially cut through at spaced intervals. The ends may be permanently closed by a joining tube 7 of asbestos-reinforced flame-resistant rubber which is bonded between ends 8, 10 of the tube, e.g. by adhesive. If the seal is to be opened and re-closed, the connection of ends 8, 10 over the tube 7 may be made by interconnecting tension springs anchored to the braid at each end 8, 10; each spring may be attached to a plurality of wires which are anchored to the tube at equally-spaced points to ensure that the springs act in the axial direction (Figs. 4, 5, not shown).
Patent GB-945575-A (GB)
Title: Improvements in and relating to printed circuits
Inventor: WALKER JOHN BRYAN
IPC: H05K3/34
Filed: 1961-11-15
Abstract: 945,575. Printed circuits. BTR INDUSTRIES Ltd. Nov. 15, 1962 [Nov. 15, 1961], No. 40923/61. Heading H1R. A double-sided printed circuit is made by producing two circuit patterns 14, 18, Fig. 4, on separate insulating supports 10, 12, e.g. by etching, providing upstanding spots of solder E at locations on the patterns which are to be interconnected, bringing the patterns together with an insulating sheet 20, apertured in correspondence with the said locations, between them, and heating at least the metal parts of the assembly so that registering spots of solder, which contact one another within the apertures in the insulating sheet, are fused together. The supports 10, 12 are retained to seal and protect the circuit patterns. Preferably, insulating sheet 20 is of partially cured epoxy resin and the solder is of Pb-Sn (60 : 40) composition, the curing of the resin and the fusing of the solder being effected simultaneously in an oven at 240‹ C.; alternatively, the assembly is heated under pressure. Terminal parts of the circuit patterns may be formed on a margin of one of the insulating supports which is not overlaid by the other support or the insulating sheet. Small holes 26 passing through the solder spots E allow the escape of gases generated during heating. External connections to the circuits may be formed through apertures 26, 26a in the insulating supports 10, 12, as shown in Fig. 6; a wire 28 is fused to the circuit 14 by solder E, and aperture 26a in support 12 is made larger to accommodate the end of the wire.
Patent GB-409470-A (GB)
Abstract: 409,470. Electric gas - lighters. EVER READY CO. (GREAT BRITAIN), Ltd., Hercules Place, Holloway, and SHEPPARD, A. H., Beechwood, Broad Walk, Winchmore Hill, both in London. Jan. 26, 1933, No. 2586. [Class 75 (iii).] In a lighter in which a filament 1 is connected through a switch with a battery and is supported by an arm 2 connected to the battery or a casing containing the battery, the filament is disposed axially of the arm 2 between conductors 3, 4 carried by a plug 7 screwed into the arm 2 and is enclosed by a shield 10 having an enlarged boss 14 attached to the end of the arm 2. The conductors 3, 4 are insulated from one another as by means of a glass tube 6 around the arm 3 or by means of a glass &c. bead through which the conductors are passed. The conductor 4 is connected to the wall of the plug and the conductor 3 to a contact 8. The two parts 10, 14 of the shield may be integral or connected together as by engaging the inturned end 16 of the boss 14 between flanges 17, 18 on the part 10 with interposed washers. The boss 14 is preferably tapered internally to fit detachably on the arm 2 but may be permanently secured thereto. The part 10 is provided with a neck 24 or an internal ring &c. to prevent the conductor 3 coming into contact therewith. According to the Provisional Specification, the boss is secured to the plug.
Patent GB-895463-A (GB)
Title: Improvements in or relating to air-heaters for steam boilers
Inventor: PARRIS CYRIL WRIGHT
IPC: F28D17/00
Filed: 1958-12-19
Abstract: 895,463. Thermal regenerators. GREEN & SON Ltd., E. Dec. 16, 1959 [Dec. 19, 1958], No. 41086/58. Class 64(1) In a regenerative air heater, chambers 1, 2, 3, 4, each containing a mass of heat transfer material and through which hot waste gases from a steam boiler and air to be heated pass alternately, are made of or lined with material such as concrete, ceramic or cast iron, capable of resisting acid corrosion sufficiently to enable the heater to operate at temperatures below the dew point of the boiler waste gases. In the apparatus shown, the waste gases and air flow through the chambers in directions at right angles to one another and by means of valves 9, 10 in the gas duct and 11, 12 in the air duct, heating gas may be caused to flow through alternate chambers, e.g. the chambers 1 and 3 whilst at the same time air is permitted to flow through the remaining chambers previously heated by the gas, the flow being periodically changed by operation of the valves so that each chamber is alternately traversed by air and heating gas. A valve 18 in the gas outflow duct 13 from each pair of chambers 1, 2 and 3, 4, is operated to close the duct when either pair is to be flushed with water for cleaning purposes. Drain ports 14 are opened during the washing periods. The heat transfer material may comprise parallel plates 15 having tubular spacing bosses 16 thereon as shown in Fig. 4 or rings 17 which may be packed at random or stacked in the manner shown in Fig. 6.
Patent GB-978481-A (GB)
Title: Improvements relating to rotary spherical valves
Inventor: BLAND DOUGLAS
IPC: F16K5/06
Filed: 1962-10-31
Abstract: 978,481. Valves. TRIANGLE VALVE CO. Ltd. Sept. 24, 1963 [Oct. 31, 1962], No. 41151/62. Heading F2V. In a rotary spherical valve, the closure 8 has flat surfaces 9, 10 which are separated by a smaller distance that the spacing of frustoconical seat rings 5, G, fitted with sealing rings 7. The closure 8 is inserted into the valve with the flat surfaces parallel to the plane of the seat rings and the spherical surface is rotated into contact therewith. A cover flange 2 is bolted into position so that operating spindle 3 engages slot 11 on the top surface of the closure 8.
Patent GB-976387-A (GB)
Title: Improvements relating to electric incandescent lamps
IPC: H01K1/58
Filed: 1961-11-20
Abstract: 976,387. Incandescent electric lamps. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Nov. 20, 1961 [Nov. 23, 1960], No. 41424/61. Heading H1F. An incandescent electric lamp comprises an incandescent element of high melting point carbide, e.g. tantalum carbide, supported by two current supply members sealed in the lamp cap and rigidly connected together so that the spacing between their ends remains substantially constant during operation of the lamp, the incandescent element being secured to the supply members by solder, e.g. silver. The supply members may be in the form of tubes through which coolant is circulated. In the form shown in Fig. 1, supply members 3, 4 soldered in sleeves 1, 2 sealed into the base 11 of the lamp cap, are sealed into an apertured glass disc 7. Recesses 9, 10 in the ends of the members 3, 4 are filled with solder and receive the ends of the incandescent element 8. The members 3, 4 are tubular and coolant is circulated through them. In a modification, rigid supply members are used, rigidly connected together by insulating heat-resisting pins. In a further modification, the members 3, 4 are each in the form of concentric tubes through which coolant passes, the ends of the tubes being closed by nickel caps having recesses into which the ends of the incandescent element are soldered. In the form shown in Fig. 4, the coolant is also used to cool the lamp bulb. The ends of the incandescent element 46 are soldered in recesses 54 in metal caps 53 along the ends of concentric tubes 51, 52 forming the current supply members. The tubes 51, 52 are sealed to the glass base of the bulb 43, which is enclosed in an outer tube 47, one end of which is closed by a disc 48 of synthetic resin. Coolant, e.g. water or compressed air, passes through the supply members and thence circulates between the bulb 43 and the outer tube 47. A chimney 44 is mounted inside the bulb to produce a circulation of gas for reducing blacking of the bulb.
Patent GB-1477591-A (GB)
Title: Electrical fuses
IPC: H01H85/54
Filed: 1975-10-10
Abstract: 1477591 Electric fuses GILES & ELLIOTT Ltd 10 Oct 1975 41665/75 Heading H2G A cartridge fuse carrier, Fig. 3, which cooperates with a base 4 containing fixed contacts, Fig. 4, comprises a handle 1 and a cartridge fuse cradle 2 which link together by a projection 11 engaging a blind keyhole slot 9 on the handle, and the cradle 9 has arms 12 provided with slots into which blade contacts of the fuse pass, so that in use these contacts can directly engage the base contacts. Ramps 15 on the handle force the fuse blade contacts to the bottom of the slots as the cradle is linked to the handle. The base, Fig. 4, has contact blocks 24 and spring contacts 22 between which the fuse contact blades engage. An insulating shroud 28 prevents the contacts from being touched. The handle and the base are formed from glass-reinforced polycarbonate, and the cradle is formed from nylon or phenolic resin. A viewing hole 17 is provided in the handle to enable the state of the fuse to be determined.
Patent GB-1198273-A (GB)
Title: Polyester Plasticizers for Vinyl Chloride Resins
Inventor: AYLESWORTH ROBERT D
IPC: C08G63/16
Filed: 1967-09-12
Abstract: 1,198,273. Polyester plasticizer for vinyl chloride resins. UNILEVER-EMERY N.V. 12 Sept., 1967 [12 Sept., 1966], No. 41671/67. Headings C3P and C3R. A non-chain terminated polyester plasticizer of molecular weight 1500 to 30,000 is made by reacting (a) a mixture of at least two C 4-12  alphaomega alkanedioic acids containing 0-50 equivs. per cent of C 4-6  acids, 50-100 equivs. per cent of C 6-9  acids and 0-50 equivs. per cent of C 10-12  acids and (b) a mixture of at least two C 2-6  alkylene glycols containing 20-80 equivs. per cent of C 2-3  glycols. Up to 25 equivs. per cent of the aliphatic acids may be replaced by phthalic, terephthalic or hexahydrophthalic acids. Examples describe making polyesters by reacting (a) at least two acids selected from succinic anhydride, adipic acid and azelaic acids with (b) two or three glycols selected from ethylene glycol, 1: 2-propylene glycol, 1: 4-butylene glycol and neopentylene glycol. The polyesters are used to plasticize polyvinyl chloride or copolymers of vinyl chloride with vinyl acetate or vinylidene chloride, employing 30 to 160 parts by weight of polyester per 100 parts of vinyl chloride polymer. Mixtures of the polyester with polyethylene terephthalate of molecular weight 15,000 to 40,000 may also be used. The plasticized compositions may also contain a barium/cadmium salt of lauric acid and an aryl phosphate as stabilizers.
Patent GB-1085769-A (GB)
Title: Covering hood for chains on a mining conveyor
IPC: E21C35/12
Filed: 1965-10-01
Abstract: 1,085,769. Endless conveyers. GEWERKSCHAFT EISENHœTTE WESTFALIA. Oct. 1, 1965 [Oct. 19, 1964], No. 41707/65. Heading B8A. [Also in Division E1] An endless mining conveyer 13 is provided on the goaf side with a safety hood 1, which covers a drive chain for a winning appliance guided on the conveyer, and has a window-like opening 2 closed by a readily removable plate (3), Fig. 2 (not shown). Bolts (6) on the plate (3) pass through holes in a guard plate 5 and catches (8) engage in slots 9 in a strip 10 on the hood. Shifting cylinders may be attached to holes 11. The cover is reinforced by beads 12.