baber/WOPTO huggingface dataset:
Patent GB-613827-A (GB)
Title: Improvements in and relating to instruments for describing ellipses and other curves
IPC: B43L11/00
Filed: 1945-07-27
Abstract: 613,827. Mathematical drawing-instruments. DEBS, V. July 27, 1945, No. 19308. [Class 97 (iii)] A drafting instrument comprises a stem 1, Fig. 1, to which is attached a pair of legs 6, 7, having their lower ends 19, 20 pivotally attached by set-screws 17, 18 and provided with points 21, 22, with grooves 23, 24, round which passes a cord loop 48, one end of which is secured to the eye 44 on a scribing member 33 and the other end passes through the eyes 44 and 49 and is wound on the shank of a winding-pin 41 fixed to an arm 42 on the scribing unit 33. The scribing unit comprises a shank 35 having at its upper end an elbow 36, Fig. 3, pivotally secured between the arms of a fork member 32 by a pin 37 and thumb-nut 38, the upper end of the fork member being riveted to a spring leg 30 which tends always to move away from the axis. The upper end of the leg 30 is secured to a collar 27 which may be clamped in adjusted positions on a sleeve 3 freely rotatable about the stem 1. For drawing ellipses, the pinpoints 21 and 22 are adjusted to be vertical and placed at the foci, and the length of the cord 48 and the position of the collar 27 adjusted to the dimensions of the figure required. The thumb-nut 38 is then adjusted until the point 43 is vertically below the eye 44, and the ellipse scribed. The pin-point units 19, 20 may be maintained perpendicular to the drawing surface by a parallel link arrangement instead of by manual adjustment. In a modification, Fig. 11, the legs 59 and 60 are adjusted in position by the disc 70 on the threaded bar 69. Any of these modifications may be used for drawing circles by removing or turning up the pin-point adjacent the scriber, and adjusting the cord length to the radius required, or alternatively a scribing implement may be substituted for one of the pin-points and the cord 48 and scribing unit 33 dispensed with. For drawing ovoids, a doublepointed unit 73, Fig. 16, is substituted for one of the pin-points 21, 22, and the points 78 and 79 thereof aligned at an angle to the line formed by the centre line of the leg 73 and the other leg. For drawing spirals, one of the pinpoints is removed, and for the other is substituted an element having a spirally grooved stem 81, Fig. 18, to a hook on the base 82 of which is attached one end of the cord 48. The cord is wound round the spiral groove and the other end attached to the winding-pin 41 on the scribing unit 33 in the usual way. For drawing spirals of different pitches, elements having different diameters of stem 81 may be used.
Patent GB-422136-A (GB)
Title: Improvements in or relating to the vulcanisation of rubber and rubber-like substances
IPC: C08K5/00
Filed: 1933-07-07
Abstract: Vulcanization accelerators for rubber and rubber-like substances are prepared by interacting a quaternary ammonium salt and a metallic salt of an N-dialkyldithiocarbamic acid preferably in a medium in which at least one of the reactants is soluble and one of the products insoluble.  Suitable quaternary ammonium salts include those obtained by interacting an alkyl or aralkyl halide with bases such as pyridine, trimethylamine and hexamethylenetetramine.  In examples: (1) benzyl-trimethylammonium chloride is reacted with sodium diethyldithiocarbamate in the presence of ethyl alcohol; (2) the reaction product of hexamethylenetetramine and benzylchloride is reacted with sodium diethyldithiocarbamate or pentamethylenedithiocarbamate in the presence of water; (3) cetylpyridinium bromide is reacted with sodium diethyldithiocarbamate in the presence of benzene; (4) a mixture of rubber, zinc oxide, blanc fixe, stearic acid, sulphur and the accelerators of examples 2 and 3 is made and cured.ALSO:Vulcanization accelerators for rubber and rubber-like substances are prepared by interacting a quaternary ammonium salt and a metallic salt of an N-dialkyldithiocarbamic acid. In an example a mixture of rubber, zinc oxide, blanc fixe, stearic acid, sulphur and the reaction product of benzyltrimethylammonium chloride or the quaternary base derived from hexamethylenetetramine and benzyl chloride and sodium diethyldithiocarbamate.
Patent GB-1442071-A (GB)
Title: Apparatus and a method for controlling a water wheel
IPC: F03B15/04
Filed: 1974-05-02
Abstract: 1442071 Fluid pressure servomotor systems FUJI ELECTRIC CO Ltd 2 May 1974 [23 May 1973] 19427/74 Heading G3P [Also in Division F1] A control system for a hydraulic turbine plant comprises a servomotor 8 controlling adjustable guide vanes leading to the runner, a pressure regulating servomotor 2 controlling a penstock relief valve 1, a governor servomotor 13, a load limiter 16, and inter-connection means between the servomotors etc. to ensure that when the speed of closing of the guide vanes exceeds a predetermined level the valve 1 is opened to reduce the pressure build up in the penstock. The servomotors 2, 8, 13 have associated distribution valves 5, 10, 14 respectively, the latter of which is controlled from speed sensor 15 and load limiter 16 through links 17, 18 19. Load limiter 16 consists of an electric motor 20, worm gear 21 and screw-driven nut 22. The movement of pressure regulating servomotor 2 is transmitted through cam 6 and links 23 to 28 to the distribution valve 10 of guide vane servomotor 8. Similarly movement of the latter is transmitted through cam 11 and links 29 to 32 to the pressure regulating distribution valve 5. Movement of the screw-driven nut 22 in the load limiter 16 is transmitted through links 26 to 28 to distribution valve 10. Guide vane servomotor 8 is hydraulically connected through lines 9 to an auxiliary servomotor 2 of the pressure regulator. Thus during operation of the plant under control of load limiter 16 the pressure regulating valve 1 remains fully closed, whereas during free running under control of the governor the guide vanes always quickly open or close whenever pressure regulating valve 1 closes or opens. Restrictors 33, 36, 37 in the hydraulic lines ensure that the opening or closing period of the guide vanes is at least 10 times that of valve 1 but shorter than that of load limiter 16.
Patent GB-1012040-A (GB)
Title: Apparatus for producing a narrow high-intensity beam of charged particles
IPC: H01J3/02
Filed: 1962-05-21
Abstract: 1,012,040. Electron beam apparatus. UNITED AIRCRAFT CORPORATION. May 21, 1962 [May 27, 1961], No. 19433/62. Heading H1D. In apparatus for producing a high - intensity beam of charged particles, comprising cathode 6, control electrode 7 and anode 8, a variable magnetic focusing field is established at cathode 6 to produce a beam having a first crossover adjacent the cathode and a second crossover beyond the anode, and such that the focal length of the beam source may be independent of beam intensity. As shown in Fig, 2, this field is established by a coil G, which is connected in series with the cathode, and which surrounds and serves to heat the cathode. Alternatively, Fig. 4, an electromagnetic lens 19 co-operates with a ferromagnetic insert in control electrode 17 to produce a focusing field at cathode 16. A non-magnetic plate 21 on lens 19 constitutes the anode. In a further arrangement, Fig. 3, the field is produced by electromagnetic lens 13, one shoe 14 of which constitutes the control electrode.
Patent GB-1194322-A (GB)
Title: Improvements relating to Agricultural Soil Treating Implements.
Inventor: PAYNTER WILLIAM DOUGLAS WYNNE
IPC: A01B29/06
Filed: 1966-03-30
Abstract: 1,194,322. Rollers. W. D. W. PAYNTER. 28 June, 1967 [30 March, 1966; 3 May, 1966], Nos. 14062/66 and 19519/66. Heading B7H. An agricultural soil treating implement comprises a depth control roller 35 and a ground crushing roller 29 transversely mounted on a frame 31 and driven from a tractor p.t.o. shaft at such a peripheral speed and in a rotary direction which together ensure a skidding of the roller surface with respect to the ground so that it crumbles and levels the ground. The roller is driven through a gear-box 11, a transverse shaft and a chain and sprocket drive 24.
Patent GB-571864-A (GB)
Title: Improvements in permutation locks
IPC: E05B37/12
Filed: 1943-11-23
Abstract: 571,864. Locks. COLLINS, J., STABBACK, F. L., SAXBY, R. N., and MASHEDER, P. R. Nov. 23, 1943, No. 19532. [Class 44] A permutation lock comprises a pair of levers 12 mounted on pins 13, 14 and bent at 15 to engage a hasp 4. A spring 20 engages the levers which can be moved apart to release the hasp by a pin 22 attached to a sliding piece; an abutment 24 on one lever engages a recess on the other to ensure equal movements by each'lever. The hasps can only be released when a pair of projections 11 on each lever engage notches 10 on discs 5, 6, 7 and 8. The discs are attached to wheels 17 bearing figures or letters that show in windows on the case of the lock; each wheel rim projects from the case so that it can be turned. Detent springs are provided so that the figure or letter is centrally disposed in the window. Each disc has several holes 16 so that its connection to the wheel can be varied.
Patent GB-294172-A (GB)
Title: Improvements in or relating to metal arc or metal vapour lamps
IPC: H01J13/28
Filed: 1928-07-05
Abstract: 294,172. Stammreich, H. July 19, 1927, [Convention date]. Low-pressure metallic-vapour apparatus; arclamp, elcctrodes.-In metallic-vapour lamps, difficulties due to the solidification at ordinary temperatures of metals other than mercury are overcome by using an alloy of low-melting point and subjecting this to fractional distillation in the lamp to remove from the arc tube metal other than that required for the arc. For this purpose the arc tube 1, formed with branches 2, 3 closed by quartz pieces 4, 5 carrying lead-in wires 6, 7 is provided with a condenser 11 to receive the undesired metal; preferably, the condenser is of such a size that it will contain only the undesired metal, any other distillate being returned to the arc tube. After operation, the metal collected in the condenser is returned to the arc tube by tipping to reform the original alloy. The condenser mav be provided with an inlet and an outlet, each having a controlling cock or valve. In the form shown in Fig. 2, outlet and inlet tubes 18, 19 of the arc tube 12 are closed by valves 21, 24 which contain an iron core and can thus be operated by a magnet to control the amount of vapour passing to, and the metal delivered from, the condenser 17. In an example, cadmium amalgam is employed, the inlet to the condenser being open and the outlet closed when the arc is struck. When all the mercury is distilled off, the condenser inlet is closed and only cadmium is left in the arc tube. After operation, the condenser outlet is at once opened, thus allowing the mercury to flow back. External heat may be employed for the distillation, and several metals may compose the alloy, the fractional distillation being carried to different lengths ior different purposes.
Patent GB-1044505-A (GB)
Title: Unijunction transistor switching circuit
IPC: H03K17/292
Filed: 1965-05-10
Abstract: 1,044,505. Transistor switching circuits. ST. REGIS-CONSOLIDATED PACKAGING Ltd. May 10, 1965 [March 1, 1965], No. 19710/65. Heading H3T. A switching circuit comprises a double base diode having a first capacitor between emitter and one base and a second capacitor between the bases with charging circuits therefor arranged such that when the circuit for the second capacitor is interrupted it discharges until the emitter becomes forwardly biased whereupon the first capacitor discharges into an impedance in the base circuit. Fig. 1 shows a bi-stable circuit for switching current alternately to loads 14a and 14b. When switch 26 is first made capacitors 30a, 31a, 30b, 31b all charge and when it is opened 31a and 31b commence to discharge, 31a somewhat faster than 31b. This continues until the base 21a voltage of double base diode 18a becomes such that its emitter is forwardly biased, whereupon 30a discharges into 17a causing SCR10a to fire and energize load 14a. Shortly afterwards double-base diode 18b conducts causing SCR10b to conduct so to energize load 14b and to switch off SCR10a via commutating capacitor 16. Further closing of switch 26 will recharge 31a and opening it will, after a delay, cause the conducting conditions of the SCR's to change over. The delay provided by the capacitors prevents incorrect operation on contact bounce of switch 26 or on spurious momentary closure of this switch. The delay due to 30a charging may be avoided by transferring the connection of the upper end of 28a to the lower terminal of rectifier 24a (Fig. 3, not shown). These rectifiers prevent capacitors 31a and 31b discharging into the supply line. Reed-type relays may be connected in series or shunt with the SCR's to operate further similar circuits (Fig. 4, not shown). Fig. 1 may be modified to be monostable (Fig. 2, not shown) by supplying the circuit of double base diode 18b from the anode of SCR10b On first energizing the circuit capacitor 30b will charge from a supply derived from source 15 via a Zener diode circuit 33 and a variable potentiometer 35. After a delay, double-base diode 18b will conduct causing SCR10b to conduct energizing load 14b. If switch 26 is now opened double base diode 18a will, after a delay, conduct causing SCR10a to conduct. This will extinguish 10b so that capacitor 30b now commences to recharge and, after a delay, 10b will again be fired and 10a extinguished.
Patent GB-1508717-A (GB)
Title: Expandable core-shafts
IPC: F16D25/04
Filed: 1976-05-13
Abstract: 1508717 Expandable mandrels GREAT LAKES INDUSTRIES Inc 13 May 1976 [15 May 1975] 19744/76 Heading F2U An expandable mandrel for gripping a reel C comprises a closed fluid system which is pressurized by a piston movable, as by a wrench W, to displace plungers 80 and which is protected by a pressure limiting device (Fig. 12, not shown). The plungers may act directly on the reel C instead of on segments 30. Screws 34 may secure spring-loaded guides 40 to the segments or secure combined guides and plungers (40<SP>1</SP>) Figs. 9, 10 and 11 (not shown). The wrench W may move the piston (54) Fig. 5 (not shown) through a rotatable screwthreaded sleeve (24) and nut (52); the piston seal (60) may be replaced by a diaphragm one (Fig. 6, not shown). The plungers (80, 80<SP>1</SP> and 40<SP>1</SP>) illustrated in Figs. 7, 8 and 11 (not shown) employ a diaphragm seal (84), a sealing ring (92) and a diaphragm seal (125) respectively and are urged outwardly by the fluid pressure against the action of springs (87, 94 and 124).
Patent GB-1013358-A (GB)
Title: Improvements in and relating to barbecues
IPC: F24B1/20
Filed: 1964-05-12
Abstract: 1,013,358. Grilling apparatus. LE CREUSET. May 12, 1964 [May 14, 1963], No. 19775/64. Heading A4D. [Also in Division F4] A barbecue stove comprises a fireplace bounded by a back wall 2 and a vertical grate 4 in front of which a spit may be rotatably mounted in slots 5, and the assembly can be rotated about an axis 12 to a position in which the grate 4 is horizontal and can be used as a grid. A grate 6 can be used for grilling in the roasting position and extends to form handles 19 by which the assembly can be moved to the grilling position. Stops 17, 18 punched out of the independent supports 9 co-operate with stops on the end plates 1 of the barbecue to locate the device in either position and wing nuts 14 are tightened to press flanges 11 on the supports against the end plates 1 to hold the barbecue in position.
Patent GB-692678-A (GB)
Title: A process for the recovery of beryllium oxide
IPC: C01F3/00
Filed: 1951-08-28
Abstract: For the electrolytic recovery of beryllium oxide from a solution of beryllium sodium fluoride (see Group XXXVI) the fluoride is obtained by leaching with water a sintered mass of beryllium ore with sodium ferric fluoride or sodium silicofluoride.  A statement of the art refers to the addition of caustic soda to the solution obtained by leaching to precipitate impure beryllium hydroxide, washing the precipitate, dissolving in concentrated sulphuric acid, and reprecipitating with ammonia.
Patent GB-969881-A (GB)
Title: Improvements in and relating to storage and dispensing of liquefied gases
IPC: F25D3/10
Filed: 1963-05-22
Abstract: 969,881. Storing liquefied gases. UNION CARBIDE CORPORATION. May 22, 1963 [July 6, 1962], No. 20316/63. Heading F4P. [Also in Division F1] The first of a plurality of liquefied gas storage containers 110, 111, 112 arranged in series has a filling conduit 114, a liquid discharge conduit 140 extending from the lower portion through the container top, the last container 112 in the series has a vapour vent duct 122 and each container other than the last is connected to the succeeding container by a conduit 120, 121 respectively extending from the upper portion to the lower portion of the next. A valve 124 in the vent duct 122 remains open during filling which is effected through the first container and each succeeding container. Liquid is dispensed from container 110 which becomes refilled by passage of liquid from the succeeding containers 111, 112 through ducts 120, 121. The gas space of each container is also connected to that of the succeeding container by ducts 142, 144 having check valves 146, 148. Safety valves and bursting discs 30, 32, 34, 36 (Fig. 1, not shown), are also provided.
Patent GB-219510-A (GB)
Title: Improvements in helicopters
IPC: B64C27/16
Filed: 1923-08-10
Abstract: 219,510. Hardy, G. H. Aug. 10, 1923. Addition to 198,389. Screw and like propellers.-The helicopter screw described in the parent Specification is modified by fitting horizontal stays W which are attached to the centre of the top surface of the blades and to a rectangular frame K on the hub. Guys L extend from the frame K to thin steel boundary plates placed at the ends of the blades. The twin arrangement of screws, which are rotated by small screws on the blades, may be fitted on the top of an airship at the bow and stern. The motors for the small screws are preferably electric. For a captive helicopter, one two-bladed helicopter screw is utilized and the anchoring cable may function as an electric cable for the motors. A pendant keel-board attached to a second tethering cord is provided for preventing rotation of the. craft. The observers' car can be raised or lowered by winch gear on the ground.
Patent GB-156821-A (GB)
Title: Improvements in or relating to bags for containing face and other powders
IPC: A45D33/34
Filed: 1918-12-09
Abstract: 156,821. Booty, S. S. Dec. 9. 1918. Powder distributors; internal fittings.-A bag for containing face and other powders is provided with a rigid collar 3 to receive a lid 4 which encloses a puff 5. An opening which may be covered by wire gauze 2 controls the delivery of powder to the puff. The gauze is hinged or removable for filling the bag. The lid may contain a spring 7 to press the puff against the gauze. A button 6 is fixed at the end of the bag. Specification 136,245 is referred to.
Patent GB-314882-A (GB)
Title: Improvements in electric cables
IPC: H01B13/02
Filed: 1929-07-03
Abstract: 314,882. Felten & Guilleaume Carlswerk Akt.-Ges., (Assignees of Rhos, A.). July 3, 1928, [Convention date]. Drawings to Specification. Cables and conductors, machines, apparatus, and processes for making.-Sector-shaped conductors for electrical multi-core cables comprise a central core of copper wires surrounded by stranded wires, the core being twisted to the pitch of the completed cable in a stranding machine. The twisted conductors are insulated and are stranded together to form a cable in a reversible laying machine. The Specification as open to inspection under Sect. 91 (3) (a) states that to impart helical form to the conductor without stressing it the dies in which the twisting of the core and the stranding of the outer wires take place are rotated at the same speed and in the same direction as the stranding head carrying the drums with the core wires, and that small differences in pitch between the helical conductors and that given by the laying machine being avoided by providing the drive of the planet wheels of the laying machine with change speed gear so that the reverse rotation of the stranding drums can be regulated. This subject-matter does not appear in the Specification as accepted.
Patent GB-125339-A (GB)
Title: Improvements in, or relating to, Struts for Supporting Photo-frames and the like.
Inventor: MANDER HAROLD RICHARD
IPC: A47G1/14
Filed: 1918-12-10
Abstract: 125,339. Mander, H. R. Dec. 10, 1918. Card and like stands.-A strut for a photograph frame or the like is formed from a single piece of wire with a stop portion c in the pivot which connects the two legs a, a<1>.
Patent GB-137563-A (GB)
Title: A lamp or lantern for use in connection with guns, such as machine guns
IPC: F41G11/00
Filed: 1918-12-10
Abstract: 137,563. Oldfield, J. & R., and Oldfield, R. A. Dec. 10, 1918. Lantern shutters. - In a lamp for use on machine guns &c., the body is provided with a circular clear glass 3 surrounded by an annular frosted glass 2. The light passing through the clear glass 3 may be cut off whilst adjusting the wick, by means of a shutter disk 7 mounted on a pivoted arm 8. The glasses 2, 3 are carried in circular frames 4, 6 connected by radial strips 5. The wick-operating lever 34 is arranged in a depression 33 in the side nf the lamp body.
Patent GB-501115-A (GB)
Title: Improvements in or relating to electrolysing devices of the vertical diaphragm type
IPC: C25B9/17
Filed: 1938-07-11
Abstract: 501,115. Electrolytic cells. LEMAIRE, J. P. July 11, 1938, No. 20551. Convention date, July 22, 1937. [Class 41] Carbon anodes 7 for electrolytic cells of the vertical diaphragm type are in the form of cylinders or prisms axially bored with a blind hole by means of which they are mounted on vertical nonconducting carrying rods having a diameter slightly less than that of the axial perforation and the feet of which are fixed in the cell. The bottom of the axial perforation may be closed by a carbon rod 9 by means of which the current is fed to the anode. The carbon anodes may be impregnated with linseed oil.
Patent GB-755791-A (GB)
Title: Polymerization process
IPC: C08F2/00
Filed: 1954-07-14
Abstract: Vinyl or divinyl compounds are polymerized by mixing one or more vinyl or divinyl compounds with a salt or addition compound of an organic sulphinic acid, the salt or addition compound being capable of liberating an organic sulphinic acid when a decomposition agent other than an acid is added, and decomposing the salt or addition compound by adding such a decomposition agent.  The acid may be liberated from a tertiary amine salt by adding benzyl chloride, from a hydrazine, hydroxylamine or semicarbazide salt by adding acetone, acetyl acetone, methyl propyl ketone or benzaldehyde, and from an aldehyde addition compound by adding a primary or secondary amine or a salt thereof, p-cresol, xylenol, acrylamide or dimedone.  Examples describe the polymerization of a mixture of methyl methacrylate and a pearl copolymer of methyl methacrylate and ethyl acrylate.
Patent GB-1518904-A (GB)
Title: Device for defibration of material
IPC: D21D1/30
Filed: 1976-05-19
Abstract: 1518904 Disc mills R B REINHALL 19 May 1976 [4 June 1975] 20753/76 Heading B2A A disc mill system of the kind in which steam or treatment gas is axially fed in at the centre of the disc together with pulp to be refined includes a separating rotor 27 mounted on the disc support rotor 23. The outer periphery of the rotor 27 communicates with a discharge space 57 and includes blades 25. The system facilitates the withdrawal of steam or gas since the blades 25 act as a centrifugal separator.