baber/WOPTO huggingface dataset:
Patent GB-1528096-A (GB)
Title: Method of manufacturing an optical fibre
IPC: G02B6/02
Filed: 1976-04-29
Abstract: 1528096 Making optical fibres COMPAGNIE GENERALE D'ELECTRICITE 29 April 1976 [30 April 1975] 17566/76 Heading C1M In a process for making an optical glass fibre a tube and rod (e.g. of pure silica which may be doped with B 2 0 3 ) are each coated with a layer which may be the same or different of one or more of the oxides of Al, As, B, Be, Ge, Li, Mg, P, Sb and Zn from a solution or suspension of the oxide(s), the bar and tube are heated separately to agglomerate the coatings and adhere them to their substrate, the bar is inserted in the tube and the composite is heated and drawn to a fibre. In an alternative embodiment the coated tube and bar may be heated, prior to insertion, to vitrefy the coatings. The coated rod or tube may be coated one or more times from compositions which may have varying amounts of dopants therein, prior to insertion. The tube may be coated both internally and externally, the external coating being removed prior to heating. After drawing the fibre may be coated with a lower RI plastics material (e.g. PTFE).
Patent GB-425601-A (GB)
Title: Improvements in or relating to electric discharge tubes
IPC: H01J61/04
Filed: 1933-06-20
Abstract: 425,601. Discharge lamps. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, Emmasingel, Eindhoven, Holland. June 20, 1933, No. 17581. Convention date, Jan. 17. Addition to 425,103. [A Specification was laid open to inspection under Sect. 91 of the Acts, Jan. 1, 1934.] [Class 39 (i)] In metal-vapour discharge tubes with a long narrow passage 23 passing through a screen 19 which separates a space 17 from the discharge space as described in the parent Specification, any metal vapour penetrating after long use into the separated space combines with a substance near the end of the passage 23 in the separated space. Damage to the pinch 18 and leakage between the electrode leads is thus avoided. The substance may react chemically with the metal vapour or may be a metal such as tin, lead or zinc alloying with it. For sodium vapour, the substance is lead oxide, tin dioxide, tungsten oxide, tellurium, calcium fluoride or lead glass for caesium vapour it is lead glass, tungsten oxide, tin, lead or graphite ; for thallium vapour, it is tin or lead ; for magnesium or lithium vapour, it is lead glass or tin. The substance may be on the wall of the separated space or may be in or on, or may form, a tube 24 closed at its lower end or may be in or on, or form an extension of, the lower end of the tube 23, the absorption of vapour then reducing or closing the passage in the tube 23. The envelope 16 around the incandescent cathode 20 and anodes 21 of the lamp shown has an inner wall of boron silicate glass poor in silicic acid and resistant to alkali metal and an outer wall of ordinary glass and is filled with neon at a pressure of 2 mm. in addition to the vapour. The foot 18 is of lead glass. The screen 19 is of ferrochromium sealed to the reentrant part 22 by a mixture of talc and water glass.
Patent GB-687592-A (GB)
Title: Improvements in the driving and formation of cased concrete piles
IPC: E02D5/72
Filed: 1950-07-13
Abstract: 687,592. Piles. BRITISH STEEL PILING CO., Ltd., and LAKE, J. O. A. May 30, 1951 [July 13, 1950], No. 17581/50. Class 68(ii) A method' of and means for driving and forming cased concrete, piles comprises closing, the lower end of a metal casing 18 by a shoe 19 of a diameter greater than the outside diameter of the casing and having a shouldered neck portion 22, the end of the casing resting on the shoulder 24. The shoe and casing are then driven to the required depth by means of a hammer 20 operating within the casing on the shoe either directly or through a cushion of sand, removing the hammer and tilling the casing with concrete. The casing may be maintained in intimate contact with the shoe by the action of a doubleacting hammer 31 operating on the head of the casing.
Patent GB-381139-A (GB)
Title: Loop-taker for sewing machines
IPC: D05B57/14
Filed: 1932-06-22
Abstract: 381,139. Sewing-machines. FAIRWEATHER, W. C., 65, Chancery Lane, London.-(Singer Manufacturing Co. ; Elizabeth, New Jersey, U.S.A.) June 22, 1932, No. 17612. [Class 112.] The rotary lock-stitch hook 1 has a circular raceway 4 for the bobbin carrier and a cover ring 8 for the raceway resiliently held in position by spring fingers 12, 13 which can yield upwardly and outwardly ; the ring has a shoulder 10 for accurately positioning it on the hook member. The ring has a recess 18 engaged by one of the spring fingers, the other engaging the shoulder 20. It also has a cutting projection 27 to cut any thread which may get into the raceway. It is released by inserting a screwdriver in the slot 25 to release the spring finger. The chief function of the cover ring is to retain the bobbin case in position.
Patent GB-1099595-A (GB)
Title: Terminal blocks and connectors therefor
Inventor: EGE HANS
IPC: H01R13/11
Filed: 1965-04-27
Abstract: 1,099,595. Two-part couplings. UNDERWRITERS SAFETY DEVICE CO. April 27, 1965, No. 17626/65. Heading H2E. An electrical contact 32, Fig. 5, is formed with two resilient fingers 33 each joined by a flat central portion 34 to an arcuate section of a cable clamp 36. The contact is formed from a single sheet of metal, the fingers being bent to face each other and the two central portions being linked by a web 37. A rivet 38 passes through the two central portions to clamp the bared central conductor of a cable 12 between them. The insulated cable 12 is supported by the two sections 36 of the cable clamp. Three contacts may be mounted in a block formed of two parts 13, 14 held together, with corresponding apertures in alignment, by a rivet 15 to form a holder for a photo-electric control unit 10. Before securing the part 13 on to the part 14, each contact is pulled backwards by its cable 12 through a corresponding tapered section 31 of the part 14 until the two sections of the cable clamp snap outwards into a tapered section 29, thus holding the contact in position.
Patent GB-1538724-A (GB)
Title: Container forming and filling machines
IPC: B31B17/00
Filed: 1976-09-02
Abstract: A machine for transforming heat shrinkable thermoplastic material into sealed and liquid-filled containers in which the material in strip form is cut off to a suitable length then heated and transformed into a tube-shaped shell blank on a mandrel with an overlapped longitudinal heat-sealed seam. The shell is then displaced in relation to the mandrel so that its bottom end extends beyond the end of the mandrel, a base blank cut from another strip is then inserted into the end of the shell to rest against the mandrel end, and the shell and inserted base are then heated causing the shell to shrink accurately to the shape of the mandrel and the bottom edge zone of the heated shell to be folded in against the end of the mandrel and the edge of the base. The joined edge zones of the shell and base are then pressed together and heat sealed. The container is then passed to a filling machine where it is filled and closed by a lid.
Patent GB-869217-A (GB)
Title: Hydraulic cement compositions
IPC: C04B28/02
Filed: 1959-05-26
Abstract: A dry cement composition which is mixed with water comprises a hydraulic cement such as Portland cement, high Al2O3 cement, pozzolana, iron ore or slag cement and 0,2% to 6,5% by weight of methylcellulose of 10-7000 c.p.s. viscosity in 2% solution and 0,1% to 10% polyvinyl alcohol 70%-90% hydrolysed. 20%-99% cement is present and the composition may also include up to 50% of fillers and pigments such as whiting and TiO2, 50% to 75% of sand, gravel and limestone and 0,2% to 1,5% of urea or a thiocyanate of the alkali or alkaline earth metals and 0,05% to 10% of asbestos fibre.  CaCl2, Al, calcium lignosulphate and antifoam agents such as the silicone emulsion polymers or ionic siliconates may also be present.  Up to 45% by weight of limestone can be used alone the water addition being 27%-40%, and up to 75% sand can be added with a water addition of 20%-40%.  The composition can be used as a mortar, a paint, a stucco and for road patching.
Patent GB-276791-A (GB)
Title: Improvements in rotary wagon tipplers
IPC: B65G67/00
Filed: 1926-07-16
Abstract: 276,791. Babcock & Wilcox, Ltd., and Wright, R. B. July 16, 1926. Tipping-apparatus.-The wagon is clamped automatically in the tippler during tipping by means of a side support 17 connected by links 19 to a pivoted rail-platform 1, and a top support 24 carried on pivoted levers 21 and held towards the platform 1 during tipping by weights 30. The platform is pivoted in the tippler rings at 5 and is normally supported by a stop 10 on each ring and by a stationary abutment 8 with cam surface 13. As the tippler turns, the roller 11 moves down the incline 13, the platform 1 turns on its pivots and the links 19 move downwards, the side-support 17 being moved down inclined guides 15 until it bears against the wagon. The holding ropes 26 for the top support 24 wrap around pulleys 33 in the tippler rings and pick up the weights 30. On righting the tippler, the top clamping bar is raised by a counterweight 34. The tippler is driven by wheels (not shown) engaging roller teeth 35, and its movements are limited by stops 38 on the rings engaging the supporting rollers 37. The rings bear against a roller 39 on the tower 31 which takes the lateral strain due to the ropes 26.
Patent GB-106238-A (GB)
Title: Improved Means for Spinning Tops and Flying-toys.
Inventor: WIDMER-CALETTI ADOLF
IPC: A63H27/127
Filed: 1916-12-13
Abstract: 106,238. Caletti, A. Widmer-. Dec. 13, 1916. Spinning tops, means for; flying-tops and projectors for. - Means for spinning tops and flying-toys comprises a barrel 1, Fig. 1, containing a helical spring 4, the lower end of which is bent inwardly to form a cross-bar 5 and the upper end of which is secured to a pin 6 carrying at its upper end a ratchet-wheel 7 with a hub extension provided with a handle 8. The conical extension 12, Fig. 5, of the toy or top is forced into the open end of the barrel with the bar 5 engaging between the parallel projections 13, and the barrel is held fast while the spring is wound up. When the tension on the spring overcomes the friction between the barrel and the part 12 of the rotor, the latter is forced out of the barrel and simultaneously receives a whirling motion from the uncoiling spring. A spring click member 10, the movement of which is limited by a stirrup 11, controls the ratchet-wheel 7.
Patent GB-1490996-A (GB)
Title: Hydraulic pressure surge protection devices
IPC: F16L55/05
Filed: 1975-04-03
Abstract: 1490996 Protecting liquefied gas tanks from pressure surges INDUSTRY SECRETARY OF STATE FOR 3 April 1975 [24 April 1974] 18013/74 Heading F4P An hydraulic pressure surge in the supply line 12 of a liquefied gas tank 11 caused by quick closing of valve 13 results in bursting of a first disc or diaphragm type pressure-relief valve 16 which permits liquefied gas to enter an air or vapour by-pass passageway 14, a second disc or diaphragm type relief valve 15 being subsequently burst thus providing a return path for the liquefied gas from supply line 12 to tank 11 via the by-pass 14. In an alternative embodiment (Fig. 2, not shown), valve 13 is located upstream of valve 16, and a return surge of pressure downstream of valve 13 is damped.
Patent GB-723270-A (GB)
Title: A pulverizing mill for wood knots or wood pulp
IPC: B02C19/22
Filed: 1952-07-17
Abstract: 723,270. Grinding and cutting mills. SAITO, T. July 17, 1952 [April 16,1952], No. 18138/52. Class 59. Apparatus for pulverizing wood knots or pulp comprises a device 6, 7 in a tank 2 for crushing and transmitting material and a second crushing device adapted to receive the material from the tank and reduce it to a more finely-divided form. Material to be pulverized is fed from a hopper into the tank 2 which is formed over part of its lower surface with teeth 3 and ribs 4 co-operating respectively with the teeth 5 on blades 6 and with a screw 7 to effect pulverization of the material. The latter then passes through a passage 11 to a disc-mill attached to the end of the tank 2, the passage being ventilated through a mesh 13 and an opening 12. Disc-mills.-The rotating annular disc 9 is provided with a plurality of teeth which are separated radially by circular notches arranged at different radii from those separating the teeth on the corresponding stationary annular disc 8. Blades 20 are provided on the periphery of the rotating disc and serve to discharge the fines, which are entrained with air sucked through the opening 12 by rotation of the disc, through a passage 14 tangential to the periphery of the mill casing 10. Liquid, such as water when pulverizing knots and a solution of caustic soda when pulverizing pulp, is fed through a pipe 18 to the disc pulverizer and, in the case of knots, the supply of liquid is controlled according to the moisture content of the knots. The mills and the screw 7 are driven by an electric motor 21 driving through pulleys 22, 23 and gears 24.
Patent GB-656486-A (GB)
Title: Installation for wireless calling in circuits comprising combined transmitting and receiving stations
IPC: H04B1/40
Filed: 1948-07-06
Abstract: 656,486. Radio transmitting and receiving systems. AUTOPHON AKT.-GES. July 6, 1948, No. 18159. Convention date, July 7, 1947. Drawings to Specification. [Class 40 (v)] In a combined transmitting and receiving station the low-frequency output of the receiver is supplied to two channels each comprising an amplifier and connected respectively to apparatus responding to control signals and to a sound reproducer. The sound channel only is blocked during transmission and in the absence of an incoming carrier of above a certain threshold amplitude. Specification 656,482 is referred to.
Patent GB-241991-A (GB)
Title: Improvements in or relating to coking retort ovens
IPC: C10B57/12
Filed: 1924-07-30
Abstract: 241,991. Rushen, P. C., (Koppers Co.). July 30, 1924. Coke ovens.-In coking carbonaceous material with the production of water gas steam is diffused into and caused to penetrate the coked sides of the. charge. Horizontal coking chambers or retorts 12 are disposed between heating flues 17 supplied with rich gas from channels 29 or lean gas preheated in regenerators 18. The flues 17 operate concurrently as upflow or downflow flues and are connected by passages 26. The regenerators are divided by a central vertical partition 109. Expansion joints 44 are provided on opposite sides of the steam flow area. Specification 171,117 is referred to.
Patent GB-638064-A (GB)
Title: Improvements in or relating to electrical temperature control arrangements
Inventor: FRANKTON WILLIAM JESSE
IPC: G05D23/24
Filed: 1946-06-18
Abstract: 638,064. Automatic control systems for electric furnaces. STANDARD TELEPHONES & CABLES, Ltd. June 18, 1946, No. 18255. [Class 38 (iv)] An enclosure temperature stabilization apparatus comprises, within the enclosure, at least one electric heater and thermistor, the latter controlling a valve oscillator which varies the heating supply current. As shown, Fig. 1, the valve V2 supplies the heating current to the enclosure heating resistor RH, and is biassed by the voltage developed across resistor R7 by the valve space current, in series with and in the same sense as, the voltage across the resistor R6 which exists only when the circuit V1-T1-T2 oscillates. The latter condition is dependent upon the sense of the unbalance of the bridge 3, 4, 5, 6 by the thermistor RT in the enclosure, being such as to effect positive feed-back from the anode to the control grid of the valve V1. In operation the resistor R3 is varied to give the desired datum temperature, the oscillator is alternately active and quiescent and the bias of valve V2 alternates, correspondingly, between two values, thus controlling the anode current and effecting a thermostatic differential at RH about the datum temperature. In a second embodiment, not shown, a single pentode valve is employed to energize the oscillator-circuit and to supply current to a relay controlling the heating. Specification 558,762 is referred to.
Patent GB-1208433-A (GB)
Title: Manufacture of ceramic artefacts having pores
Inventor: HORSLEY GEOFFREY WINTON
IPC: G21C3/62
Filed: 1967-04-20
Abstract: 1,208,433. Nuclear fuel. UNITED KING- DOM ATOMIC ENERGY AUTHORITY. 27 March, 1968 [20 April, 1967], No. 18309/67. Heading G6C. [Also in Division C1] A porous artefact of uranium oxide or carbide which may also contain plutonium oxide or carbide is prepared by sintering the oxide or carbide of the higher valency state of the metal to form a densified artefact which is chemically unchanged and then heating the densified artefact in a reducing atmosphere to produce an oxide or carbide of the metal in the lower valency state. The sintering is preferably carried out at 800-1000‹C, for 1-4 hrs. in an oxidizing atmosphere. The reduction is preferably carried out at 1600‹ C. for 1-4 hrs. in a CO atmosphere. Spheres of U 3 O 8  having a porosity of 43-65% and being produced by gyrating particles of U 3 O 8  with n-decanol are preferably used in the process.
Patent GB-1057110-A (GB)
Title: Improvements in or relating to polymer structures
IPC: B29C48/05
Filed: 1965-04-30
Abstract: 1,057,110. Polyvinyl fluoride filaments. DIAMOND ALKALI CO. April 30, 1965 [May 4, 1964], No. 18354/65. Heading B5B. In a process for the preparation of an extruded structure from a vinyl fluoride polymer, the polymer is extruded without sufficient tension on the extrudate to result in molecular orientation, essentially all the latent solvent in the extrudate is removed, without added molecular orientation, and the extrudate is then drawn with a sharp neck. A " latent solvent " is defined as an organic liquid boiling above 100 C., which has no significant swelling or solvent action on polyvinyl fluoride at room temperature, but is capable, at elevated temperature, of sufficient solvent action to cause polyvinyl fluoride particles to coalesce. Many latent solvents are specified. The composition extruded is a dispersion of vinyl fluoride polymer in latent solvent and may be a powder, paste or liquid containing 5-90% by weight of latent solvent. The polymer, of particle size preferably less than 20 Á, may be polyvinyl fluoride homopolymer or a copolymer containing at least 75-80% vinyl fluoride. In one embodiment, Fig. 1 (not shown), a dispersion of polymer in hopper 8 is heated by means 10 to coalesce the polymer particles. The fluid composition is filtered at 11 and extruded through orifice 4 placed close to or in quenching liquid bath 6 to prevent molecular orientation by tension of the resulting monofilament. The cooled filament is passed through heater 16 (120-190 C.) to remove latent solvent, stretched with a sharp neck between godets 18, 20 and 22, and heatset at 24 (150-190 C.). The speed of godet 26 may be varied to permit heat-setting with or without tension. The quenching liquid, e.g. water or brine, may be maintained below 100 C. Alternatively, the polymer-latent solvent system may be extruded into air. Examples describe the formation of filaments of tensile strength at least 5 g./den. from dispersions of polyvinyl fluoride in dimethyl formamide.
Patent GB-1416064-A (GB)
Title: Locking devices
IPC: F16B2/14
Filed: 1973-04-17
Abstract: 1416064 Releasable fastenings HALLAM SLEIGH & CHESTON Ltd 11 April 1974 [17 April 1973] 18403/73 Headings E2A and E2B A locking device, for a pull out unit such as a drawer 1, comprises rectilinearly movable members 3, 4, which when a control rod 20 is pushed to release the drawer, move together during a first stage of opening, member 3 then being arrested and member 4 continuing to move during a second stage. If the control rod 20 is released the member 4 becomes locked to the member 3 to prevent further movement of the drawer. As shown the members 3, 4 slide respectively on stay rods 5, 7 the former being fixed to a cabinet 2. A control plunger 12 and the rod 20 are biassed by springs 13, 26 respectively so that sloping faces 17, 24 thereon engage faces 17, 23 provided on elements 14, 21 which have serrations 15, 22 engaging serrations 8, 9 on stay rods 5, 7 to thereby lock the slide members 3, 4 together. To release the drawer 1, a push button 31 is depressed causing rod 20 and plunger 12 to move leftwardly whereby elements 14, 21 are disengaged from the serrated rods 5, 7 under spring bias (not shown). Slide members 3, 4, being coupled together by a latch 27 move together until the latter strikes a pin 30 so that the members 3, 4 uncouple and member 3 becomes locked to the cabinet as spring 13 causes reengagement of surfaces 16, 17. Thereafter slide member 4 and drawer 1 move away from slide member 3. If the button 31 is released spring 26 causes immediate reengagement of surfaces 22, 23 to lock the drawer against further movement. In a modification no rear stay rod 5 is provided, the rear slide member slides along a channel member fixed to the cabinet. Three or four slide members with the same number of stay rods may be provided arranged around the axis of the control rod and disposed in staggered relationship the slide members being sequentially released from the stay rods.
Patent GB-1105503-A (GB)
Title: Improvements in or relating to antennae, e.g. radar antennae
Inventor: NANKERVIS HARRY BRUCE
IPC: H01Q19/13
Filed: 1965-05-03
Abstract: 1,105,503. Aerials. STEPHENSON CORPORATION. 3 May, 1965, No. 18471/65. Heading H4A. [Also in Division H1] In a dish-type aerial for simultaneous transmission and reception the two equal halves 10, 12, Fig. 2, of a paraboloid of revolution which has been divided along an axial plane are spaced apart on either side of an intermediate septum 14, a radiator is disposed at the focus of the half 10 and a receptor at the focus of the half 12, and the said radiator and receptor are coupled to a transmitter and a receiver, respectively. As described, in an application for measuring the speed of vehicles using the Doppler effect, a strip 13 is bent into a parabola and is fastened to the edges of the halves 10, 12 which are spaced ## (#=mean operating wavelength) apart. The septum 14 carries a centrally-disposed dipole 16, the upper part of which co-operates with the half-paraboloid 10 and the lower part with the half-paraboloid 12 and it also carries a subsidiary dipole 18, Fig. 4 (not shown) which is encased in a hollow nylon screw 20 and which permits a predetermined amount of energy from the transmission side to be coupled into the receiving side. The upper part of the dipole 16 is coupled by waveguides 26, 27 to a reflex klystron 24 and the lower part thereof is coupled by wave-guides 28, 29 to a choke housing 30 and a microwave mixer detector assembly 32, which actuates a speed measuring device 34. The two waveguides 26, 28 constitute the upper and lower portions of a waveguide 25, Fig. 4 (not shown), with the septum 14 as a common wall. The sum of the heights of the waveguides 26, 28 and the thickness of the septum 14 is made less than the height of a standard waveguide with the object of reducing coupling between their outer walls and the dipoles.