baber/WOPTO huggingface dataset:
Patent GB-1270347-A (GB)
Title: Twist drill
Inventor: CHROMY FRANZ
IPC: E21B10/58
Filed: 1970-03-13
Abstract: 1,270,347. Twist drills. HILTI A.G. 13 March, 1970 [28 April, 1969], No. 12106/70. Heading B4C. [Also in Division B3] A twist drill, e.g. for a rotary percussion drilling machine, having a hard metal cutting edge, preferably carbide, for example for drilling concrete or artificial stone has a centering extension 3, 30. In Fig. 2 the extension 30 is formed by notches 40; there could be a plurality of notches. With the drill of Fig. 2, material between extension 30 and drilling teeth 60 does not have to be removed by cutting but crumbles as a result of disintegrating action occurring upon impact and penetration of the drill's cutting edge.
Patent GB-290437-A (GB)
Title: Improvements in or relating to gasfilled incandescent-cathode discharge tubes
IPC: H01J17/30
Filed: 1927-05-05
Abstract: 290,437. Dicker, S. G. S., (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). May 5, 1927. Vacuum tubes.-An auxiliary cathode is arranged near the anode or anodes of gas-filled incandescent-cathode discharge tubes, particularly rectifiers. The auxiliary discharge furnishes positive ions to neutralize the anode potential drop. In the construction shown, the auxiliary cathode 4 is of the incandescent type and is arranged near the anode 3, which is of gauze or is otherwise perforated to allow the positive ions produced by the auxiliary discharge to enter the main discharge path between the anode and the cathode 2. A member 5 surrounding the auxiliary cathode forms part of the anode structure, but is insulated from the anode, and provided with a connection 9 to enable it to be brought to the required potential.
Patent GB-937212-A (GB)
Title: Improvements in or relating to h.t. transformers and to insulated strip conductors for use in their manufacture
Inventor: FAIRFIELD RONALD MCLEOD
IPC: H01F41/12
Filed: 1961-04-05
Abstract: 937,212. Cables. BRITISH INSULATED CALLENDER'S CABLES Ltd. April 4, 1962 [April 5, 1961], No. 12204/61. Class 36. A strip conductor for use in making transformer windings is insulated with layers of preimpregnated paper tapes and enclosed in an envelope of moisture-resisting material. The preimpregnating compound is solid at operational temperatures and as used in transformer windings may, for example, be a mineral hydrocarbon oil mixed with low percentages of wax and resin fillers or a resin of chlorinated diphenyls and polyphenyls. The compositions of these compounds are given in detail in the Specification. The pre-impregnated paper tape may carry on one or both of its surfaces, as it is run on to the conductor, a thin layer or layers of molten compound which may be the surface layer or layers of the impregnating compound melted by a heated spindle. The moistureresistant envelope, which is also invulnerable to attack by the transformer oil, is applied following the application of the final paper layer. The envelope may be a polyethylene terephthalate tape, polycarbonate resin tape or a glass fibre tape impregnated with a synthetic resin, e.g. epoxy resin. It may be applied by wrapping helically with overlapping turns or longitudinally with overlapping edges sealed in known manner. An integral envelope can alternatively be formed by spraying plastics material in a molten state by means of flame spray gun. Specifications 318,647, 373,697, 545,315, 798,807, and 866,367 are referred to.
Patent GB-1421203-A (GB)
Title: Steel production method and apparatus
IPC: C21C5/52
Filed: 1973-03-14
Abstract: 1421203 Steel producing method and apparatus PENNSYLVANIA ENG CORP 14 March 1973 [27 March 1972] 12255/73 Heading C7D [Also in Division F4B] Ferrous metal containing carbon is treated in the furnace shown in Fig. 1 by injecting an oxygen containing gas and a fuel through tuyeres 11, terminating the delivering of the oxygen containing gas and fuel, heating the molten metal with an electrode 17 to form a molten pool of metal which covers the tuyeres, terminating the heating of the metal and injecting oxygen and a hydrocarbon shielding fluid (e.g. propane) in surrounding relation to the oxygen through tuyeres 31 and 32 respectively. Argon may be introduced together with oxygen during the oxidation period to promote decarburization e.g. in stainless steel production. The oxygen containing gas may comprise argon, lime, limestone, fluospor, burnt lime, iron oxide and carbonaceous material entrained therein to form a slag which may be removed via port 24. After the termination of the injection of the oxygen containing gas an inert gas may be injected through tuyere passage 31, hydrocarbon fluid through tuyere passage 32 or an inert gas optionally with entrained lime and iron ore may be passed through both passages 31 and 32. Argon or nitrogen and entrained powdered carbonaceous material may be injected into the melt after the termination of the oxygen and hydrocarbon shielding fluid supply and prior to discharging the molten metal through pouring spout 22.
Patent GB-170615-A (GB)
Title: An improved negative electrode for electric accumulators
IPC: H01M4/02
Filed: 1920-05-03
Abstract: 170,615. Pouchain, A. May 3, 1920. Electrodes.-An electrode for a storage battery consists of a support 1 of platinum, gold, silver or cadmium or of a metal coated with one of these metals, the support being slotted to form bands 2 between which zinc plates 3 are held.
Patent GB-994500-A (GB)
Title: Improvements in or relating to the manufacture of polyurethanes
IPC: C08G18/24
Filed: 1963-03-28
Abstract: Stannous thiocyanate is prepared by (a) reaction of SnSO4 with KSCN, followed by ether extraction; (b) reaction of SnO with HSCN; or (c) reaction of SnCl2 or SnSO4 with NaSCN or NH4SCN, followed by precipitation of stannous thiocyanate. In Examples: (1) the reaction product of SnSO4 and KSCN is continuously extracted with ether; (2) NaOH is added to a solution of SnCl2.2H2O in HCl and the pH adjusted to 7.  A solution of KSCN in HCl is prepared and the thiocyanic acid extracted with ether and reacted with the stannous oxide. Produced in the first step, Sn(SCN)2 is precipitated by boiling off the ether.ALSO:Polyurethanes are prepared by reacting polyhydroxyl containing polymers with an organic polyisocyanate in the presence of Sn(SCN)2 as catalyst.  The polymer may be a polyether, polyester or polyester amide.  Suitable polyisocyanates are listed including uretedione dimers and isocyanurate polymers. Foams may be produced by adding water to the reaction mixture or a low-boiling liquid may be added, e.g. a fluorinated hydrocarbon. Many tertiary amine catalysts are listed including cyclic compounds containing nitrogen in a ring, which may be used in conjunction with the Sn(SCN)2.  In Example (3) oxypropylated glycerol was reacted with tolylene diisocyanate in the presence of water, polysiloxane, triethylene diamine and Sn(SCN)2 to produce a foam.
Patent GB-1013541-A (GB)
Title: Improvements in fuel element cans for nuclear reactors
Inventor: WALLIS JOHN DAWTREY
IPC: G21C3/08
Filed: 1961-04-06
Abstract: 1,013,541. Fuel elements. ENGLISH ELECTRIC CO. Ltd. April 4, 1962 [April 6, 1961], Nos. 12360/61 and 12361/61. Heading G6C. A fuel element assembly for a nuclear reactor includes at least one radial deflector vane, at least a portion of which is inclined obliquely to a plane containing the axis of the assembly so as, when the assembly is in position in a fuel channel of the reactor, to deflect the flow of coolant and create an asymmetrical pressure distribution around the assembly whereby to create a lateral stabilizing force on the assembly. In one embodiment, the assembly includes a cylindrical hollow fuel can 10 with helical cooling fins 13 divided into zones by four equallyspaced splitters 14. The splitters are held in position by bracing strips 15, and have axiallyextending flanges 16 in the downstream portion of the assembly (Fig. 2) and axially-extending flanges 17, 18 in the upstream portion, the direction of coolant flow being as indicated by the arrows in Fig. 1. The flanges 16 on diametrically opposite splitters are arranged in opposite senses in order to produce an asymmetrical aerodynamic loading by creating lateral forces on the assembly. Angular deflector vanes 19 are attached to the downstream ends of the splitters 14, diametrically opposite vanes having their inclined portions parallel so as to create an asymmetrical axial pressure distribution producing a lateral stabilizing force on the assembly which acts in the same direction as that produced by the asymmetrical loading due to the flanges 16. The splitters 14 have raised portions forming castellations 22 at intervals along their length. The flanges 17, 18 maintain a smaller resultant force on the lower part of the assembly than on the upper part, the flanges 18 also acting as strengthening members, thereby ensuring that there is a net lateral force at the junction of adjacent assemblies which might not be the case if the flanges 16 extended over the whole length of each splitter and adjacent assemblies were positioned out of phase with each other. In another embodiment described, the splitters 14 are of T-section and produce no asymmetric loading. Mention is also made of an assembly in which an axiallyextending gap is formed in one or more of the splitters and a deflector vane fitted in the gap or circumferentially in line with the gap. The deflector vanes, if at one end of the assembly, may be at the upstream end instead of the downstream end. Any suitable number of vanes may be fitted and they need not necessarily be spaced equally around the fuel can. A deflector vane may be fitted so as to be out of line with any splitters that may be fitted and may be provided even in the absence of splitters.
Patent GB-1185035-A (GB)
Title: Improvements in or relating to Laminated Springs
Inventor: IRVING KENNETH
IPC: F16F1/20
Filed: 1966-03-21
Abstract: 1,185,035. Interleaves for laminated springs. FOTHERGILL & HARVEY Ltd. 20 June, 1967 [21 March, 1966], No. 12376/66. Heading F2S. A laminated leaf spring has an interleaf of plastics with a low coefficient of sliding friction e.g. P.T.F.E. secured by a pressure sensitive adhesive to one of the adjacent faces of the leaves between which it is interposed. The interleaf (3), Fig. 1 (not shown), is in the area of a clip (7, 8), or has projections (5) locating the clip longitudinally. The subject-matter of the Specification is included within the specification of Specification 1,185,036 which is referred to.
Patent GB-459289-A (GB)
Title: Improvements relating to footwear
IPC: A43B5/04
Filed: 1935-04-25
Abstract: 459,289. Boots &c. KIMPTON, J. N., 44, High Street, Newport, Monmouthshire. April 25, 1935, No. 12453. [Class 17 (ii)] To enable the legs of trousers, of the kind usually worn for winter sports, to be retained around the boot tops, and to prevent snow from entering the boots or the bottom of the trouser legs, a boot or the like is provided with a ridge 1 formed on the outer surface around and adjacent the upper edge 2 thereof. The ridge comprises a leather or other strip enclosing a rubber core 3 which may be either solid or tubular, the edges 1 of the strip being sewn together and to the boot upper at 4, as shown in Fig. 3. Alternatively, the core may be made of leather, or the ridge may be integrally formed from one piece of rubber. The ends of the ridge terminate in a point or mitre 5, adjacent the lacing edges of the boot.
Patent GB-1139772-A (GB)
Title: Disc brakes
IPC: F16D55/224
Filed: 1966-03-22
Abstract: 1,139,772. Disc brakes. DUNLOP CO. Ltd. 22 March, 1966 [27 March, 1965], No. 12454/66. Heading F2E. A floating-caliper disc brake comprises a guide frame 8 adapted to guide axial movements of both the pads 5a, 6a and the caliper at both sides of the disc, for which purpose it consists of a sheet-metal frame 12, Fig. 2, bent to a U shape to provide limbs 14, 14a on opposite sides of the disc, each limb being formed with an aperture 13 for the associated pad and also with a pair of axially extending projections 9 which engage corresponding recesses 10 in the caliper, the recesses 10 being formed in inserts 11 of polytetrafluoroethylene or other plastic material which deform elastically to provide a retraction effect acting to centralize the caliper. The frame 12 is stiffened by its cross members 17a, 17b and 17c, the member 17a being sufficiently narrow to allow radial withdrawal of the pads after removal of pins 4, which engage apertures in the pad backing plates 5, 6 to retain the pads in the caliper. The pins 4 engage apertures in the caliper, the caliper consisting of two portions 1a, 1b secured together by bolts. The pads are normally applied by an hydraulic piston 3 in a cylinder formed in the portion 1a. Alternative applying means operable by a handbrake lever (Fig. 3, not shown) comprises a lever (19) forming together with a link (20), pivoted at (21) to the oaliper, a toggle whereby the end (19a) of the lever acts either directly in a recess in the backing plate (5) or on the recessed head (22, Fig. 4, not shown) of an adjuster screw (23) threadedly engaged in the backing plate (5) and manually rotatable to compensate for pad wear. A further arrangement of the lever (19) (Fig. 5, not shown) incorporates an automatic wear adjuster comprising a frusto-conical friction ring (27) co-operating with a recess (27a) under the action of a leaf spring (26a) to grip a rod (28) through which the manually applied force is transmitted to the backing plate (5), a return spring (30) being provided which is stronger than the spring (26a) but which does not overcome the latter during manual operation, since on manual release of the brake a stop (32) prevents further withdrawal of the rod (28), the spring (30) being caused to act on the rod during hydraulic brake application whereby, should pad wear be excessive, the travel of the backing plate (5) exceeds that during which leaf spring (26a) is being compressed, so that the rod (28) is drawn through the ring (27) to a new position of adjustment.
Patent GB-310532-A (GB)
Title: Improvements in mine props
IPC: E21D15/46
Filed: 1929-04-22
Abstract: 310,532. Reidiger, F. April 27, 1928, [Convention date]. Mine props. - A telescopic mine prop is formed of a laterally flexible outer tubular member and an inner telescoping tubular member, the members each having interengaging portions to maintain the prop in adjusted position. The outer member has two rows of external saw-like teeth 5 inclined to the horizontal so that corresponding teeth 2 on the inner member produce, under pressure, a horizontal thrust on the walls of the outer member, and after a certain pressure has been exceeded cause the teeth to slip over each other and allow the prop to collapse. To provide for this lateral flexibility in the outer member, the shell wall between the sets of teeth is made thin and may be split. The teeth may form a helical surface the angle of which should be less than the angle of slip for a given pressure and are then preferably disposed as a left-hand helix. The members are aligned with the rows of teeth of the inner member disposed between the rows of teeth of the outer member, and the inner member is then raised to the required height and rotated by a lever 12 to engage the teeth, a stop 6 being provided to limit rotation. A fine adjustment is provided by a left-hand screw 10 having a rotatable head 4 screwing into the plug 9 at the head of the inner member. A wooden foot 14 in a socket 15 is provided and the lower edge of the outer member is notched to contact with the flange of the socket. An indicator is provided by perforating the inner member and placing cross rods in the perforation to contact with the top surface of the outer member.
Patent GB-1125335-A (GB)
Title: Improvements relating to water activated primary cells
Inventor: HAYWARD JOHN MCLAREN
IPC: H01M6/34
Filed: 1966-03-22
Abstract: 1,125,335. Water-activated primary cell. WESTINGHOUSE BRAKE & SIGNAL CO. Ltd. 17 March, 1967 [22 March, 1966], No. 12491/66. Heading H1B. A water-activated primary cell including an anode plate and a cathode plate separated by a water-permeable spacer is clamped together with a band of pre-stretched irradiated polythene. In an example a silver chloride plate between two magnesium plates is separated therefrom by two spacers provided with perforations, the whole being clamped together by a sleeve of pre-stretched irradiated polyethylene passed round the assembly and heatshrunk on to it.
Patent GB-1065621-A (GB)
Title: Method and device for measuring pressure of fluid in vessel
IPC: G01L11/00
Filed: 1964-03-25
Abstract: 1,065,621. Pressure measuring devices. YAWATA IRON & STEEL CO. Ltd. March 25, 1964 [March 25, 1963; Sept.23, 1963; Jan.29, 1964], No.12627/64. Heading G1L. In a device for continuously measuring the pressure of a fluid 2 containing dusts in a vessel 1, a pipe 9 connects the vessel 1 through a throttle 8, a pipe 10, a feed-gas flow regulating valve 17 and a pipe 18 to a feed-gas supply source, a pipe 3 connects the pipe 9 to a converter 4 which converts a detected pressure into an electric signal which is transmitted to an indicating and recording meter, and pipes 11, 19 are connected one on each side of the throttle 8 to detect the pressure differences there across, which difference are transmitted to one or other side of a diaphragm 12-C of a differential pressure setting device 14 the movement of which diaphragm 12-C is transmitted through mechanism 15 to a feed-gas regulator 13 which actuates the feed-gas flow regulating valve 17.
Patent GB-717164-A (GB)
Title: Improvements in or relating to hollow metal bodies
IPC: C21D9/08
Filed: 1951-05-30
Abstract: 717,164. Pistons; cylinder liners. DEUTSCHE EDELSTAHLWERKE AKT.-GES. May 30, 1951 [Oct. 4, 1948; March 3, 1948; March 3, 1949], No. 12673/51. Class 122(1) [Also in Groups VIII and XXVIII] A hollow metal body 1, such as a cylinder liner or a piston, is subjected to a hardening treatment so that at least one surface of the wall of the body comprises hardened portions 2 spaced by relatively soft portions 3. The portions 2, 3 may be alternately arranged with respect to each other in the axial or circumferential direction of the body, or in both directions. The portions 2 may merge into the portions 3 and preferably extend through the full thickness of the wall of the body, and may be in the form of axially-spaced annular bands, Fig. 1, or spiral bands, Fig. 2 (not shown), or spiral bands of opposite pitch, Fig. 3 (not shown). The ends la, 1b of the body may be completely hardened or locally hardened in ring-like or spiral bands and surrounded by sleeves 4 of soft metal, e.g. steel. The hardened annular portions 2 may be produced by bringing the whole thickness of the wall of the body to the hardening temperature using an electric-induction coil or a gas burner surrounding the tube, the coil or burner being advanced in steps in the axial direction of the body which is quenched internally or externally; alternatively, a heating element only partly surrounding the body is used while the body is rotated. When hardened bands of spiral formation are required, a spiral-shaped heating element partly surrounds the body which is rotated and moved axially relatively to the element. The body may be given a heat treatment to produce a body with both faces having alternately arranged hardened and tempered portions, or one face may be completely hardened.
Patent GB-163902-A (GB)
Title: Improvements in adjustable wrenches
IPC: B25B13/18
Filed: 1920-05-07
Abstract: 163,902. Notini, S. G., and Kaufmann, E. May 7, 1920. Pivoted-jaw wrenches; sliding- jaw wrenches.-In a wrench of the kind in which the inner jaw 3 is pivoted in a sleeve 2 slidable on the shank 1 of the fixed outer jaw 8, the inner jaw 3 is provided with a cam-shaped boss 5 surrounding the pivot 4 and adapted to lock the sleeve to the shank when the jaw 3 is moved away from the shank. A spring 7 holds the parts in locking position. The boss 5 and shank 1 may be roughened or serrated as shown and the engaging surfaces of the sleeve 2 and shank 1 may also be roughened. The jaw 3 may be formed with an extension 9 to facilitate its release.
Patent GB-527001-A (GB)
Title: Improvements in fibre liquid containers
IPC: B65D25/38
Filed: 1939-04-28
Abstract: 527,001. Cartons for liquids. AMERICAN CAN CO. April 28, 1939, No. 12738. Convention date, April 28, 1938. [Class 66] To prevent the accumulation of water &c. thereon the top closure member 12 of a fibre liquid-container of the general construction described in Specifications 470.098 and 470,174 is formed with a raised domed panel 27 which merges into the plane of the end seam 25 by a rounded edge 28. A dispensing opening 31 in the panel is provided with a closure member 32 hinged to the top by a staple at 33, the part 35 affording a carrying tab.
Patent GB-553067-A (GB)
Title: Improvements in shaft bearings
IPC: F16C43/02
Filed: 1941-10-02
Abstract: 553,067. Bearings. PHILLIPS & POWIS AIRCRAFT, Ltd., and DAVIS, W. A. Oct. 2, 1941, No. 12746. [Class 12 (i)] A self-aligning shaft bearing comprises a shell 8 with inner spherical surface and segmental members 9, 10 with outer spherical surface 12, the segments being inserted or removed one at a time in the absence of the shaft by turning and swinging movements. The shaft, when in position, prevents relative movement of the segments. The segments may have laterallyextending shoulders to increase the bearing area, the shoulders being provided with flats or chambers to permit the turning movement. The segmental members may be composed of graphite-impregnated synthetic resin.
Patent GB-772565-A (GB)
Title: Improvements in the production of propargyl aldehyde
Filed: 1955-05-03
Abstract: Propargyl aldehyde is obtained by the oxidation of propargyl alcohol with chromic acid and sulphuric acid by adding the oxidizing agent at normal temperatures or temperatures up to 80 DEG  C. at about the rate at which it is consumed and continuously removing the aldehyde formed from the oxidation mixture.  The oxidation preferably takes place in aqueous medium, in general between 15 DEG  and 80 DEG  C. To remove the propargyl aldehyde formed rapidly from the oxidation mixture, a current of an inert gas, e.g. air or nitrogen, can be led through the mixture.  It may also be removed by the use of reduced pressure or by an inert extraction agent which is not miscible with water, e.g. cyclohexane or petroleum ether.