baber/WOPTO huggingface dataset:
Patent GB-918216-A (GB)
Title: Toric lens tool
IPC: B24B13/005
Filed: 1961-08-22
Abstract: 918,216. Chucks. PLASTIC CONTACT LENS CO. Aug. 22, 1961 [Aug. 22, 1960], No. 30237/61. Class 83 (3). [Also in Group XXIII] A plastic lens-holding chuck comprises a body member surrounded by concentric sleeves each having a pair of jaws for gripping the edge of the blank, one pair being spaced at 90 degrees to the other pair and in different planes, such that the lens can be clamped in a " warped " condition for surface treatment. When released it has a toric outer surface. A chuck for holding a plastic lens blank L during the formation of a toric surface comprises a body member 12 and means for clamping two pairs of opposed peripheral portions of the blank to the member 12 in different planes, thereby holding the blank warped during treatment of the surface. The blank is manually held in alignment with the rotational axis of the chuck and in contact with the top of the member 12 and a sliding tubular member 10 is moved upwards until its edge 86 contacts the base 88 of the lens, when it is locked by a screw 34. Opposed jaws 36 on an inner sleeve 14 secure the flange 40 of the blank. An outer sleeve 18 having jaws 38 at right angles to the jaws 36 is brought to a position in which the jaws 38 are above but out of contact with the lens flange 40 and pins 22 are then thrust upwards by a ring 24 having a micrometric adjusting screw 26. The sleeve 18 is then moved downward by a screwed ring 20 until the jaws 38 clamp those portions of the lens flange warped upwardly by the pins 22.
Patent GB-230162-A (GB)
Title: Improvements in or relating to airscrews
IPC: B64C11/36
Filed: 1923-12-03
Abstract: 230,162. Forsyth, A. G. Dec. 3, 1923. Screw propellers.-In variable pitch screw propellers having blades adjusted by gearing and brake drums, the gearing comprises toothed wheels and worm and worm gearing acting on the blades through a one-stage reduction gearing. The gearing may be controlled automatically according to the engine space, and may be locked when not in use. A separate pinion for rotating the pitch gear when the engine is stationary is provided. The boss 2, Fig. 1, has a central hub 3, a surrounding cylindrical wall 5 which has an end wall 6. A rotary sleeve 10 is mounted on the hub and carries a worm 14 at one end and a brake drum 15 at the other. The worm 15 drives two worm; wheels 17, the shafts of which have pinions 20 engaging pinions 21 secured to the blade roots. A second brake drum 28 is freely mounted on the sleeve 10 and carries planet wheels 31 of two diameters, the smaller engages a sun wheel 32 fixed to the boss and the larger engages a sun wheel 33 fixed to the sleeve 10. The drums 15, 28 have brake bands 16, 29 adapted to be operated by rollers 43 acting on pivoted cams 45. With both drums free, the blades remain constant in pitch. Application of brake 16 results in the worm 15 rotating to decrease the pitch and application of the brake 29 in an increase in pitch of the blades. To adjust the pitch when the engine is not running, a pinion 79 is slidden into engagement with an internal pinion 78 on the drum 15. In the automatic control system, Fig. 8, the brake rollers 43, 44 are advanced by oil pressure controlled by a valve 38 which is actuated by levers from a speed governor 35 on the engine. The link 36 is fulcrummed at 37 and connected to hand control 34. Locking sleeves with conical or serrated clutches may be carried by the boss for engagement with the internal toothed wheels 21, bell crank or similar levers being connected with the brake mechanism whereby the locking sleeves are withdrawn at the commencement of the brake operating movement. In a modification, the worm and worm gear operates a screw and nut gear, a rod which is slidably and diametrically mounted in each blade root being pivotally attached to the nut.
Patent GB-675764-A (GB)
Title: Improvements in or relating to film-forming and adhesive compositions, method of making the same and method of forming continuous films
IPC: C09J157/00
Filed: 1948-11-24
Abstract: An adhesive film-forming composition comprises an aqueous dispersion of an emulsion polymer of styrene, a substituted styrene, e.g. methyl- and amino-styrenes, or vinyl chloride, and 10 to 100 per cent based on the weight of the polymers of a water-soluble solvent therefor having a boiling-point above 100 DEG  C., e.g. ethylene glycol monobutyl ether, diethylene glycol monoethyl ether acetate and g -valerolactone.  Polyvinyl butyral and plasticizers, e.g. dibutyl phthalate, tricresyl phosphate, diethyl sebacate, and butyl ricinoleate may also be present in the dispersed phase.  The solvent is preferably added before or during the emulsion polymerization. the compositions, to which silica aerogel as flatting agent and pigments such as clay and calcium carbonate may be added, may be used for coating paper and textiles.  In examples: (1) and (2), styrene is emulsion polymerized in the presence of sodium dodecyl benzene sulphonate, disodium hydrogen phosphate, dibutyl phthalate, potassium persulphate and diethylene glycol monoethyl ether acetate or g -valerolactone; (8) aqueous dispersions of polyvinyl chloride and polystyrene are blended with diethylene glycol monoethyl ether acetate dissolved in water.
Patent GB-414632-A (GB)
Title: Improvements in and relating to the manufacture of laminated articles
IPC: D21J1/16
Filed: 1932-10-31
Abstract: Fibrous materials such as wood, paper, fabric, loose fibres, paper pulp and asbestos, are impregnated or coated with a solution of a phenol-aldehyde resin prepared as described in Specification 413,628, [Group IV]; the materials are then heated to above 85 DEG  C. with or without pressure.  Solutions of the resin in aqueous ammonia or organic solvents may be used.  Laminated articles may be prepared from layers of the same or different materials, and the external surfaces of such articles may be decorated or may carry designs, engraved or in relief.  The products are resistant to water and other corrosive influences and may be used in the electrical industry and for various specified structural purposes. In examples, (1) layers of paper impregnated with the resin solution are superimposed and subjected to heat and pressure; (2) layers of impregnated fabric or (example 3) impregnated veneer layers are treated similarly; (4) layers of veneer impregnated with the resin solution are superimposed, covered on both sides with sheet metal coated with the same solution, and subjected to heat and pressure; the veneer layers may be replaced by layers of fabric, paper, paper pulp, asbestos or mica, and the sheet metal by paper, veneer, fabric or mica; (5) layers of paper impregnated with the resin solution are interleaved with sheet metal coated with the same solution, and the whole is subjected to heat and pressure; wood or fabric may be used instead of paper.
Patent GB-1438772-A (GB)
Title: Internal combustion engine inlet and exhaust apparatus
IPC: F02B19/10
Filed: 1973-06-27
Abstract: 1438772 IC engine intake and exhaust conduits; heating charge HONDA GIKEN KOGYO K K 27 June 1973 [28 June 1972] 30557/73 Heading F1B Metal conduits 17 and 18 defining flow passages for air-fuel mixture supplied to an auxiliary combustion chamber 5 and exhaust gases from a main combustion chamber 2, respectively are in heat exchange relationship over at least part of their lengths and are surrounded by a casing 19. The casing 19 may be casting and the space 20 may be filled with heat insulating material. A leaner mixture is supplied from the carburetter passage 14 through an exhaust 3 heated chamber 22 and a conduit 16 to the chamber 2.
Patent GB-814023-A (GB)
Title: Industrial electric lighting fittings
Inventor: MACGILLIVRAY CHARLES ALEXANDER
IPC: F21V17/00
Filed: 1956-10-08
Abstract: 814,023. Lamp-holders; two-part couplings. CROSSLAND Ltd., R. & A. G. Oct. 2, 1957 [Oct. 8, 1956], No. 30560/56. Class 38 (1). In an industrial lighting fitting of the kind in which a reflector body has at its upper end a neck containing a lamp-holder said neck carries an attachment part 6 in the form of a cylindrical cup adapted for bayonet connection to a supporting part 10 by means of laterally projecting portions 7 which engage inwardly projecting portions 14 on the part 10. The part 6 carries blade contacts 9 which, when attaching the parts together, first enter the ends 15a of arcuate slots formed in an insulating member 15 carried by the part 10 and then upon subsequent partial rotation of the part 6, engage resilient U-shaped contacts 16 carried by the part 10. A spring catch 17 may be provided to lock the two parts together.
Patent GB-503300-A (GB)
Title: Improvements in or relating to lighting systems
IPC: F21V33/00
Filed: 1937-10-02
Abstract: 503,300. Illuminating pictures, signs, &c. HOARE; R. R. Oct. 2, 1937, Nos. 30661/38, 30662/38, and 30663/38. Divided out of 504,027. [Class 75 (iv)] [Also in Groups XV and XVIII] A picture, sign, or other surface G, which is mounted in a frame A and covered by a sheet of glass B spaced from the surface G, is illuminated by one or more lamps L disposed within a casing D which is secured in a slot K in the upper part of the frame A, the sides of the slot K and casing D being polished and a reflector R being provided so that a flat beam is projected over the surface G between the latter and the glass B. Slightly inclined strip mirrors are disposed along the base and two upright sides of the frame between the surface G and glass B so as to reflect light which would otherwise be lost back on to the surface G. The reflector R is hinged to provide access to the casing D, and passage of heat from the latter to the surface G is prevented by the provision of vents J and a glass plate F disposed across the lower end of the slot K.
Patent GB-305727-A (GB)
Title: Improvements in and relating to artificial teeth
IPC: A61C13/10
Filed: 1927-11-15
Abstract: 305,727. Miller, N., and Miller, J. T. Nov. 15, 1927. Teeth, artificial.-In an artificial tooth of the kind having a baked-in anchor member formed with a hollow cylindrical head and projecting tongues, the walls of the hollow cylindrical head are perforated to give a firmer hold on the porcelain and the projecting tongues may also be perforated. Fig. 2 shows a tooth facing 1 having a sheet-metal anchor member formed with a perforated hollow cylindrical head 2 and radial tongues 3 which are adapted to be bent back in opposite directions after penetrating the bridge or backing. Fig, 7 shows a tooth 19 for plate work wherein the tongues 14 are bent at rightangles and are perforated so as firmly to engage the vulcanited denture. The perforated hollow head 12 may have a part 18 extending beyond the tongues towards the incisal edge of the tooth. A broken facing or tooth may be replaced by a facing or tooth of similar size formed, as shown in Fig. 4, with a groove 8 to receive the anchor member remaining in the denture. The replacement facing or teeth are secured by cement, thus rendering re-vulcanization unnecessary. The facings &c. are formed with distinguishing numbers, indicated at 9, Figs. 4 and 7.
Patent GB-816842-A (GB)
Title: Nautical propulsion system using webs and craft fitted with such system
IPC: B63B1/04
Filed: 1956-10-09
Abstract: 816,842. Reciprocating pumps for liquids. SBRJANA, A. Oct. 9, 1956, [Oct. 10, 1955; Aug. 9, 1956], No. 30709/56. Class 102(1). [Also in Group XXXIII] A water pump is combined with a propulsion system for watercraft. The system comprises a rod 16 supported under water from the craft and oscillatable about its midpoint 17 to actuate webs 20 on its extremities, the rod being actuated by a handwheel 13 on a shaft 12 secured to the rod at 17. A bell 56 on the floor of the craft and connected through flap valves 57 with the bilge leads to a tubular bellows 55 surrounding the shaft 12. The bellows end in a ring 58 reciprocable on the shaft to draw water from the bilge and deliver it through a valved outlet pipe 60, Alternatively the ring 58 may be secured to the shaft 12 so that oscillation of the handwheel contracts the bellows to effect the pumping.
Patent GB-629767-A (GB)
Title: Improvements in and relating to the making of metallic joints between metal articles
IPC: B23K1/14
Filed: 1947-11-20
Abstract: In making a joint between two lead pipes by casting a low-melting-point alloy into a mould arranged about the juxtaposed ends of the pipes a suitable alloy comprises tin 38.5 per cent, bismuth 14.5, and the rest lead.
Patent GB-446290-A (GB)
Title: Improvements in and relating to lamps suitable for street lighting
IPC: F21V33/00
Filed: 1934-10-27
Abstract: 446,290. Street &c. lamps and burners. SUGG & CO., Ltd., W., Ranelagh Works, Chapter Street, Westminster, SUGG, P. H., and SUGG, P. C., Southview, Pollards Hill East, Norbury, London, and McGIBBON, A. R., 83, Wellwood Road, Goodmayes, Essex. Oct. 27, 1934, No. 30899. [Classes 75 (i) and 75 (iv)] In a street or like gas lamp, in order to ensure effective evacuation of the combustion products from the interior of the lamp, the products are discharged through an opening 4 in one side of a Venturi throat formed by two oppositely disposed diverging outlet passages 6. In the lamp shown, twelve burners are mounted in line on a manifold C arranged at the bottom of a cowl 2 which discharges at its upper end through the opening 4. The Venturi passage is formed by a two-piece casting with upper and lower diverging walls 9, 10, the two parts being held together by frames 11 with cross-bars 12. At the sides of the opening 4 at the top of the cowl, spaces 14 are left for the discharge of products not passing into the cowl 2. The burner manifold has sloping streamlined sides 16 ; at its end opposite the gas nozzle 25, is a tubular part 19 opening into an air chamber 20, supplied with air through a passage 21 and air opening 23 in the partition 24. The mixing-tube 29 is adjustable by a screw 30. The partition 24 separates off an end chamber 31 housing the gas supply D with its moisture trap 28<1>, the control mechanism E, the screw 30 and the control for the nozzle 25. This chamber has louvred air inlets 32 with a baffle 33. Reflectors F, G, H are arranged as described in Specification 446,328.
Patent GB-280932-A (GB)
Title: Improvements in and relating to transformers
IPC: H01F30/10
Filed: 1927-11-17
Abstract: 280,932. British Thomson- Houston Co., Ltd., (Assignees of Sclater, I. H.). Nov. 18, 1926, [Convention date]. Transformers. - In a transformer having a shell type core, the low voltage winding is formed in two radially spaced concentric sections 13, 14 supported respectively by the inner and outer core legs 10, 11, and the high voltage winding 15 is made in the form of disc coils disposed between the low voltage sections and supported by the inner section 13. Supporting blocks 17 are provided between the section 14 and the outer core legs, and spacing strips 16 are provided between the inner section 13 and the high voltage winding 15. The individual disc coils forming the high voltage winding are separated by insulating collars 18 projecting into the space between the winding 15 and the outer section 14. This space may also accommodate the main leads and tap connections from the high voltage winding.
Patent GB-1020233-A (GB)
Title: Improvements in or relating to hollow cathode structures
IPC: H01J17/00
Filed: 1962-08-13
Abstract: 1,020,233. Thermionic cathodes. C.S.F.- COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. Aug. 13, 1962 [Sept. 27, 1961], No. 30913/62. Heading H1D. A hollow cathode structure comprising a cavity 1 having an inner emissive coating 2 with associated heating means, and a restricted opening 3 for escape of electrons, is connected by a conduit 7 to a source of ionizable vapour which is ionized within cavity 1 to compensate the electron space charge therein by forming a plasma. As shown, cavity 1 is surrounded by a heating element 4, in a thermally-insulating envelope 5, and is connected to a heated caesium reservoir 10. Caesium vapour passes through porous member 9 and is deflected by barrier 13 and ionized by contact with a high work function emissive layer 2 of W, Re, Ta or Nb. The heating of the caesium reservoir and/or the cavity is regulated so that the electronic space charge is compensated by the caesium ions and a plasma is obtained, electrons being withdrawn therefrom by an external anode field. In an alternative arrangement, using a low work function emissive coating 2, the caesium vapour is ionized by contact with a directly-heated tungsten filament which replaces shield 13. Also, spherical cavity 1 may be replaced by a cylindrical cavity of circular or rectangular cross-section, the caesium vapour may be introduced at right angles to the orifice 3, and the ionizer may be a heated plate. Alternatively, the emissive layer may be heated by radiation from a heated ionizer or by electronic bombardment. A plurality of cavities may be arranged side-by-side to obtain not only a high density but also a large total current intensity.
Patent GB-655526-A (GB)
Title: Improvements in and relating to metal structures
IPC: E04B1/58
Filed: 1948-11-29
Abstract: 655,526. Cross-joints for metal lattices. HAMILTON, W., and HAMILTON & CO. (CIVIL ENGINEERS), Ltd., W. Nov. 29, 1948, No. 30939. '[Class 20(ii)] In a roof structure comprising girders lying athwart one another on which a skin or plating is to be secured, the girders 10, 11 are formed from members of channel section secured together along their length back to back or channel to channel, the girders being halved together where they cross and one member 14, 20 of each girder being continuous through the joint and secured to the continuous member of the other girder which lies in a different plane, while two other members 15, 18 or 22, 24 of each girder abut either side of the continuous member of the other girder. At the joint the hollow sections may be filled with solid fillets, which may be riveted together, to transmit thrusts through the continuous members from the abutting members on each side. The continuous member at a joint may continue through a plurality of joints or the continuous members of the joints may be transposed from top to bottom in the length of a girder Plain channels welded together may be used for steel structures, riveted flanged members, as shown, for aluminium structures. The Provisional Specification is not restricted to roof structures. Specification 608,515 is referred to.
Patent GB-1441861-A (GB)
Title: Method and apparatus for producing threads
IPC: B21H1/00
Filed: 1974-07-15
Abstract: 1441861 Rolling profiled workpieces WILHELM FETTE GmbH 15 July 1974 [13 July 1973] 31173/74 Heading B3M A rotationally symmetrical workpiece 2, Fig. 1, is provided with threads, grooves, knurling, or teeth by rolling it between profiled rollers 4 and 5 each of whose rolling surfaces varies in radius around its circumference so that the rolling is completed in one rotation of the rollers. Rotation of the rollers is limited to one revolution by a mechanical stop. The rollers may be mounted in a head 1 which is fed transversely of the workpiece axis, or alternatively, three rollers may be carried in a head which is fed axially relative to the workpiece. The axial spacing of the rollers is fixed (but is adjustable by eccentric roller spindles) and the rollers are frictionally driven by contact with the workpiece. Each roller, Fig. 6, may have a flattened portion 12 which permits the roller to be fed relative to a workpiece, a portion 11 of progressively increasing diameter for profiling the workpiece, a portion 4 of fixed diameter, and a final portion of decreasing radius. The rollers, Fig. 1, are rotationally connected by gearing 7-10, the gear 8 being rotationally biased by a spring to rotate anti-clockwise. In the initial position shown, an abutment 18 associated with the gear 9 contacts a bolt 21 which prevents rotation of the gears and rollers by the spring bias. This allows the head to be fed over a workpiece with the flattened portions 12 facing wach other. At this stage the head strikes a stop which rotates a lever 19 and retracts the bolt 21, thereby allowing the rollers to rotate into contact with the workpiece. Simultaneously a second bolt 20 is extended to stop rotation of the rollers after one rotation. When the head is withdrawn, the lever is reset, and the gearing is rotated to its initial position by the spring. In an equivalent arrangement (Figs. 9 and 10, not shown) three rollers are connected to gears which mesh with a common central gear. The central gear carries a rotatable abutment for controlling rotation of the rollers, and is rotationally spring biased as before. Either the head can be rotated about a stationary workpiece, or the workpiece is rotatable.
Patent GB-864299-A (GB)
Title: Improved gift wrap carton
IPC: B65D5/50
Filed: 1957-10-07
Abstract: 864,299. Cartons. GILBEY Ltd., W. & A., and DE MAJO, W. M. Oct. 7, 1957, No. 31265/57. Class 18. A carton of the general type described in Specification 843,778 is modified in that two opposed end flaps are formed at their outer edges with one or more spacer tabs, depending into the inside of the carton when the flaps are folded to a closed position so that they act as abutments to engage an end of an article within the carton. In one form, opposed end flaps 2 are formed each with two tabs 3 ; in another embodiment, (see Fig. 6), each end flap 2 has a single tab 3 provided with a cutout 7, the pair of cut-outs 7 locating a bottletop between them when they depend into the carton. The carton ends may both be fitted with such flaps, or one may be as described in Specification 843,778 of any known construction.
Patent GB-1481846-A (GB)
Title: Process for producing crystalline sorbitol
Inventor: HUCHETTE MICHEL
IPC: A23G3/34
Filed: 1974-07-15
Abstract: 1481846 Production of crystalline sorbitol ROQUETTE FRERES SA 15 July 1974 31313/74 Heading C2C [Also in Divisions A2 and Bl] Crystalline particles of sorbitol are produced by continuously mixing molten sorbitol having a dry matter content of at least 90% by weight, with 20-80% by weight of powdered sorbitol (based on total molten plus powdered sorbitol), the mixing being effected by simultaneously dispersing the molten and powdered sorbitol into an open rotating receptacle containing granules of conglomerated molten sorbitol and sorbitol powder whereby the molten and powdered sorbitol are mixed at the surface of the sorbitol, collecting sorbitol granules from the receptacle and crystallizing amorphous sorbitol contained in said granules, the sorbitol being maintained in motion by the rotation of the receptacle and being maintained at a temperature of at least 90‹ C. The molten sorbitol may be introduced in the form of drops, jets or sheets. The axis of rotation of the receptacle may be inclined to the horizontal, and the granular sorbitol may be removed from the receptacle by overflow. The removed granules are matured, e.g. at 50-95‹ C. for 1-20 hours, to increase crystallinity. Sweetening, colouring, flavouring or acidalating agents may be added to the molten sorbitol. Suitable apparatus is described.