baber/WOPTO huggingface dataset:
Patent GB-1123526-A (GB)
Title: A method for sealing cellulose or lignocellulosic materials together or to other materials
IPC: D21H27/30
Filed: 1967-03-17
Abstract: 1,123,526. Seaming non-metallic sheet material. E. L. BACK, K. G. NORBERG, and F. I. JOHANSON. 17 March. 1967 [30 March, 1966], No. 12751/67. Heading B5K. Cellulosic or lignocellulosic materials are sealed together or to another material without using an added adhesive by heating the bonding surface, i.e. the surface to be bonded, of the cellulosic or lignocellulosic material to at least 250 C. and maintaining it at this temperature for a maximum of 30 seconds and then bringing the bonding surfaces of the two materials into contact with each other before, during or irnmediately after heating, while pressure is applied. Preferably, the bonding surface of the cellulosic or lignocellulosic material is maintained at at least 325 C. for a maximum of 1 second and the applied pressure is in the range of 20-250 kg./cm.<SP>2</SP> Heating of the bonding surface of the second may or may not be effected. Lap joints are specified. Heating of the bonding surface(s) may be effected by conduction of heat through the material from clamps or tongs having constant temperature bars or impulse heated bars having smooth or grooved clamping surfaces. A constant press gap may be maintained by spacers or stop screws. Alternatively, the bonding surface(s) may be heated directly by (a) passing the material(s) over a wedge-shaped heating tool followed by pressure rollers, (b) passing the bonding surface(s) over electrically, gas or oil heated, and possibly driven, rollers or cylinders preferably augmented by spring-loaded steel bands running parallel to the webs of material, (c) blowing a heated gas, e.g. air or an inert gas, on to the bonding surface(s), (d) applying radiant heat or other radiant energy, e.g. a laser beam, prior to applying pressure, (e) using a high frequency electrical field, (f) pressing the bonding surfaces together while cold and rotating one relative to the other using a spindle to generate heat by friction, or (g) bringing the bonding surfaces in contact with a number of thin electrical resistance wires inserted into the bonding region and passing an electric current through the wires. The bond may be cooled by contact with cold rollers or plates or by a stream of cold air or inert gas. Preferably, the sealing operation is carried out in an inert atmosphere, e.g. in nitrogen or water vapour.
Patent GB-492403-A (GB)
Title: Improvements in and relating to electric signalling and like apparatus
IPC: B61L5/18
Filed: 1937-05-04
Abstract: 492,403. Railway signals. WESTING- HOUSE BRAKE & SIGNAL CO., Ltd. May 4,1937, No. 12756. Convention date, June 10, 1936. [Class 105] [Also in Groups XXXVIII and XXXVII] In an electric signalling apparatus wherein a signalling arm is operated from a normal position into one or other of two positions in dependence on the polarity of the actuating current, the signalling arm 32, Fig. 4, carrying a spectacle frame is mounted on a shaft 25 which supports two depending armatures 26, 27. Each armature co-operates with a pair of polepieces 12b, 15b, Fig. 3, extending on opposite sides of supporting straps 10, 11 clamped to plates 1, 2 and distance pieces 8 which support permanent magnets 3 for polarizing the polepieces. The magnets 3 are retained in position on the distance pieces by clamps 5. The magnet assemblies may be replaced by electromagnets. A stationary operating coil is provided around the core 25 and the armatures 26, 27 are operated in one or other direction from the normal vertical position in accordance with the direction of the exciting current. Studs 30, 31 co-operate with mechanism for biassing the signalling arm to the normal central position and for selectively operating switch contacts.
Patent GB-830264-A (GB)
Title: Improvements in or relating to thread guides and their manufacture
Inventor: MAYSH JAMES WILFRED
IPC: B65H57/06
Filed: 1956-04-26
Abstract: 830,264. Pottery manufacture. UNITED INSULATOR CO. Ltd. April 25, 1957 [April 26, 1956], No. 12890/56. Class 87(1) [Also in Group IX] A thread guide comprises at least one and one half turns of an open helix of ceramic material with a support attached to its periphery. It may be made by extruding a tube, e.g. of rutile, in a plastic state, drying it, cutting a helical groove in it of a depth equal to the wall thickness of the tube, cutting the helix so formed into lengths of between one and one and one-half times the pitch of the helix, and firing: the support, preferably of wire, is then cemented into a radial recess in the periphery of the helix. The internal edges of the helix are rounded at each end or continuously
Patent GB-945875-A (GB)
Title: Improvements relating to parametric amplifiers, converters and oscillators
Inventor: JACKSON BRIAN
IPC: H03F7/04
Filed: 1959-04-16
Abstract: 945,875. Parametric amplifiers. ELECTRIC & MUSICAL INDUSTRIES Ltd. April 1, 1960 [April 16, 1959], No.-12911/59. Heading H3B. A parametric amplifier using a back-biased silicon junction diode as a non-linear capacitance is driven by a generator Wp at a pumping frequency p. The signals from source Ws have a frequency s where s=p/2, the signal and idler frequencies being the same. The diode has inherent inductance shown at 9. The diode and a capacitor 11 are tuned to series resonance at the pumping frequency. The transmission line between the pumping source Wp and the diode is one half wavelength long at the pumping frequency p and is a quarter wavelength long at the signal frequency. It is of high impedance as seen from the signal circuit. The signal circuit is a line section equivalent to a half-wave resonant line at the signal frequency S. The load, not shown, is coupled to the signal circuit in known manner.
Patent GB-878209-A (GB)
Title: Mixer crystal rectifier tubes
Inventor: LANCIANI DANIEL A
IPC: H01L29/00
Filed: 1960-04-11
Abstract: 878,209. Matching impedances. MICROWAVE ASSOCIATES Inc. April 11, 1960, No. 12921/60. Class 40(8) A rectifier unit 10 adapted to be plugged into a waveguide comprises a dielectric sealing member 16 designed to exclude moisture from the unit and to match the impedance of the rectangular waveguide 12 to that of the cylindrical container 10. In addition, the cylinder 10 contains a triangular fin 18 so aligned on the minor transverse axis of the rectangular guide 12 that TE 11  mode energy in the vicinity of the plug 16 is transformed to a coaxial mode in the vicinity of the crystal and whisker assembly 22,40. The fin is mounted within a conductive cylinder 20 and carries either the crystal 22 (of silicon) or the whisker 40. The remaining element of the pair is carried on a pin 36 screw-threaded into a composite piston 26, 28. A further pin 38 locks the first pin in its adjusted position and provides the inner conductor of a coaxial I.F. output socket. The piston and the cylinder 20 are separated by a thin conductive spacer 24. The inner (conductive) part 28 of the piston carries ridges 30, 32 dimensioned to provide a R.F. choke. The surrounding insulative sleeve 26 provides the dielectric of a R.F. by-pass capacitance. The plug 16 is made one quarter-wavelength thick at the operating frequency and is designed, by choice of an appropriate material, to have a characteristic impedance which is the geometric mean of the impedances of the cylinder 10 and the rectangular guide 12. The cylinder 10 is located within an extension 13 of the guide 12 by spigots 14, 19. A quarter-wave choke may be arranged between the ends of the guide 12 and the cylinder 10. Although end-mounting is shown, it would be possible to mount the device on the face of a guide of rectangular section terminated by an end plunger.
Patent GB-901519-A (GB)
Title: Clips for securing sheet material
IPC: F16B2/20
Filed: 1959-04-16
Abstract: 901,519. Clips and clamps. DANIELS, H. B. March 25, 1960 [April 16, 1959], No. 12950/59. Class 44. A clip for gripping sheet material comprises a shell 11 having a longitudinal slot 13 communicating with its interior through which slot a portion of sheet to be gripped is passed, a core member within the shell, the cross-section of the core and of the interior of the shell being other than circular. As shown, the core consists of two portions 14 and 15, one portion having a tongue which corresponds with a groove in the other portion. An attachment member 12 is pivoted in the shell 11 and has extensions 20, 21 formed by bending the wire back on itself, these extensions preventing the core from sliding out of the ends of the shell when the attachment member 12 is in the position shown in Fig. 1. The shell may be of metal coated with a plastic material, or may be wholly of plastic material, while the core portions may be of wood mouldings or plastic material. In alternative forms the shell may be closed at one or both ends and the upper part of the shell may be open.
Patent GB-553480-A (GB)
Title: Operating mechanisms for electric switches
IPC: H01H21/28
Filed: 1942-09-15
Abstract: 553,480. Actuation of switches; retractive switches. BLISS, CO., E. W. Sept. 15, 1942, No. 13003. Convention date, Oct. 28, 1941. [Class 38 (v)] A retractive switch 11 is operated by a cam 30, through an intermediate loosely-mounted member 32, the arrangement permitting a greater rotation of the cam than is necessary to operate the switch through spring accommodation on the button 12, so that the circular part of the cam can bear on the member 32. The cam is returned by a spring-pressed fork 41, the prongs of which bear on pins 51 on the upper surface of the cam 30.
Patent GB-798825-A (GB)
Title: A low sonic frequency crystal contact microphone
IPC: A61B7/04
Filed: 1955-05-05
Abstract: 798,825. Piezo-electric instruments. MURCHIE TRADING CO., Ltd., and FOTHERGILL, L. Aug. 3, 1956 [May 5, 1955], No. 13018/55. Class 40 (4). In a piezo-electric microphone the crystal b3 is secured to a diaphragm a1 or a2 which is mounted in a resilient ring a3, this sub-assembly being mounted in a rigid body c1 carrying a rigid contact e5 which makes rigid contact with one exposed corner of one surface of the crystal b3. The microphone is stated to have a very good low-frequency response and to be particularly useful in stethoxopy. The alternative diaphragms a1, a2 are a contact diaphragm, and a diaphragm for use with a probe, respectively. The crystal unit B, which consists of the crystal b3 cemented between two bars or copper plates b2 and b4, and between two fibre washers b1 and b5 (one corner of the crystal being left exposed), is cemented in the recess of diaphragm a1 or a2. This sub-assembly is then mounted in the rubber ring a3 which is in turn mounted in the larger diameter portion of the aperture in the body c1, the copper foil conductors bc1, bc2 passing through c1 for connection to connecting tabs c2, c3 carried by segment c4. Segment c4 is located in the body c1, contact plate c5 is placed in position, and is secured to the body c1 by screws e1, e2. The back plate d1 and back strap d2 are then secured to contact plate c5 by screws e3, e4. The screw e5 is adjusted to make contact with the exposed corner of crystal b3, thus damping the crystal so that the microphone responds to contact-borne sounds but is relatively insensitive to airborne sounds.
Patent GB-1184121-A (GB)
Title: Liquid-Cooled Nuclear Reactor
Inventor: LECLOU ANDRE
IPC: G21C1/03
Filed: 1968-03-18
Abstract: 1,184,121. Reactors. COMMISSARIAT A L'ENERGIE ATOMIQUE. 18 March, 1968 [28 March, 1967], No. 13020/68. Heading G6C. In an integral, liquid metal cooled, fast reactor the reactor core, heat exchangers and pumps are immersed in the liquid metal under an inert gas atmosphere. The core, exchangers and pumps occupy separate, interconnected vertical, cylindrical tanks. Liquid sodium is urged upwardly through the core 1 by the pump 2 and emerges through the openings 19 of the shield 18, enters the openings 23 of heat exchanger 4, and is discharged through 24 to the pump intake. The tanks 6, 7, 8 contain the core, pump and heat exchangers respectively, are adjacent to each other and are connected by the openings 35, 36. The assembly is surrounded by the heat insulation 10 and the concrete 11. The bellows seal 13 connects the tanks to the superstructure. In an alternative form the pump is mounted within the central tank.
Patent GB-1009155-A (GB)
Title: Adjustable supporting leg
IPC: A47B91/02
Filed: 1964-03-31
Abstract: 1,009,155. Furniture stabilisers. UPRIGHT Inc. March 31, 1964 [May 13, 1963; Nov. 29, 1963], No. 13141/64. Heading A4H. An adjustable supporting leg 10 which may have a castor 14 has an outer tubular member 11 and an inner member 12 threaded at 15. A sleeve member 16 having a lower slotted part to form outwardly bent fingers 25 which have their lower ends formed as segments of a nut 18 with a shoulder 19 to engage the lower end of member 11. The nut 18 has an exterior cam surface 22 and a locking collar 27 is slid vertically downward, after member 12 has been inserted, to engage surface 22 and force the fingers inwardly so that nut 18 co-operates with the thread 15 of member 12. The collar 27 is held in locked position by a bail-shaped spring 32. By releasing the fingers a rapid adjustment of the leg may be made, the final finer adjustment being made by rotation of the leg.
Patent GB-910464-A (GB)
Title: Improvements in or relating to clutches
Inventor: PAGE VALENTINE
IPC: F16D13/52
Filed: 1958-04-25
Abstract: 910,464. Friction clutches; securing together rotary parts. BIRMINGHAM SMALL ARMS CO. Ltd. July 14, 1959 [April 25, 1958], No. 13154/58. Class 80 (2). In a multi-disc friction clutch for a motorcycle the axially slidable splined drive connection between the usual driving shell 11 and driving discs 13 is of sinusoidally undulated contour. The shell undulations may be pressformed in the shell, or a separate undulated annular member may be secured to the shell.
Patent GB-131554-A (GB)
IPC: B25B27/00
Abstract: 131,554. Merchant, W. L. A. March 6, 1919. Tongs are constructed from springy wire or rod a bent round at the middle to form a handle a<1> and at the ends to form one or more inwardly projecting claws a<2>, and the links are moved inwards against their spring action by a slide b, which engages teeth or notches a<3> on the links and is bent over at one side b<2> to provide a support for hanging articles upon when the tongs are suspended by the loop a'. The slide may have a single elongated aperture or two separate apertures to embrace the links.
Patent GB-132158-A (GB)
IPC: A23G3/14
Abstract: 132,158. Stevens, T. Jan. 24, 1919. Stationary batch-mixers with rotary stirrers. - A fondantworking machine comprises a cylindrical casing a with a feed hopper b at one end and open at the other. A rotating shaft c carries beaters f and vanes e which propel the material towards the outlet. The shaft c is removable for cleaning purposes, one end being squared and entering a square socket in its driving shaft c<1>, a suitable bearing being also provided below the hopper. The other end of the shaft has a bearing in a removable cross-bar d. An aperture covered by a wire grid k provides a vent for the escape of vapour from the casing.
Patent GB-875371-A (GB)
Title: Improvements in or relating to a doppler radar system
IPC: G01S13/60
Filed: 1957-09-03
Abstract: 875,371. Doppler radar. LABORATORY OF ELECTRONICS Inc. Sept. 3, 1957 [Sept. 10, 1956], No. 13236/61. Divided out of 875,369. Drawings to Specification. Class 40(7) The Specification relates to the means for producing the coherent transmitted and local oscillator signals in the aircraft pulse Doppler radar navigation system disclosed in Specification 875,369.
Patent GB-418639-A (GB)
Title: Improvements in pincers, tongs, or the like
IPC: F24B15/10
Filed: 1934-05-03
Abstract: 418,639. Tongs. MAWSON, A., MAWSON, R., and DAVIS, T. B., (trading as DAVIS & MAWSON), Plume Street, Aston, Birmingham. May 3, 1934, No. 13355. [Class 61 (ii).] Coal-tongs, &c., are formed with grippers 24 on pivoted arms 20. A rod 25 integral with or attached to the arm 20 loosely carries the gripper 24 which is retained by a head 23. The rod 25 may be of round of non-circular section.
Patent GB-800550-A (GB)
Title: Improvements in temperature detectors
Inventor: GRIFFITHS RUPERT
IPC: H01H37/00
Filed: 1954-05-07
Abstract: 800,550. Fire-detector cables. GRAVINER MANUFACTURING CO., Ltd., and WILKINSON SWORD, Ltd. April 26, 1955 [May 7, 1954], No. 13365/54. Class 36. An electrical temperature detector comprises two conductors, one a nickel-chromium alloy or a borated copper-clad nickel-iron wire 10, Fig. 1, and the other a surrounding tubular stainless steel sheath 11, the conductors being separated by a glass material having a negative coefficient of resistance and by discrete refractory particles 13, e.g. alumina, which prevent the conductors touching when the temperature rises to 1000‹ C. for example, and the glass softens. Apparatus for manufacturing such a detector comprises a stand 20, Fig. 3, which carries a lead-screw 21 on which is mounted a carrier 22 for supporting a glass tube 23, a gas-fired heater 24 for melting the end of the tube, a reel 26 and pulleys 28 from which the conductor wire 25 is drawn through the tube 23, a hopper 29 and feed tube 30 for feeding the refractory particles between the wire 25 and the glass tube 23, and a vibrator 32 to pack the particles. In operation, the end of the glass tube 23 is fed into the heater 24 and the wire 25 pulled down to draw the fused glass on to the wire. Draw-off rollers 33 driven by a motor 34 are then used to continue the coated wire pulling. As glass is drawn off, the tube 23 is moved down into the fusion source 24 by the screw 21 driven through a gear-box 35 from a motor 34, the speed of movement of the tube 23 being much less than the speed of the coated wire moved by the rollers 33 due to the thinness of the glass coating, the relative speeds being adjusted by means of the gear-box 35. An optical device 36 may be provided to allow visual monitoring of the coating. A further fusion source 37 may be provided to re-fuse the glass coating to ensure adhesion of the glass and wire. The coated wire is then directed by a suitable support 38 on to a cutting bench 39. The wire, whose coating may not yet be solidified throughout, is then sheathed by threading it into the sheath 11 which is then reduced by a die 14 (Fig. 2, not shown), or otherwise reduced by swaging or pressing. The detector may again be heated during or after application of the outer sheath in order to give better contact between conductor and coating. In a modification both conductors may be in the form of wires which after coating with glass having the refractory particles distributed therein may subsequently be introduced into an outer non- conductive sheath. In this construction it may be desirable to pack further material into the sheath. In the Provisional Specification, silica may be used for the refractory particles, and the outer sheath may be formed from spirallywound and seam-welded metal strip. In another method the inner conductor is coated with a mixture of silica powder, glass and a suitable binder.
Patent GB-144866-A (GB)
Title: Improvements in or relating to belt fasteners
IPC: F16G3/08
Filed: 1919-05-28
Abstract: 144,866. Steel & Screw Co., and Pullin, A. May 28, 1919. Belt fastenings.- In a fastening-device for driving-belte comprising a plate a secured to the belt ends by screws and nuts, ribs b<2> of V-section tapering towards the outer ends are formed on the heads b<1> to prevent the screws from turning.
Patent GB-710470-A (GB)
Title: Improvements in and relating to the sealing of bottles and other containers
IPC: B65D41/04
Filed: 1952-05-27
Abstract: 710,470. Closure caps. WALLER, C. D. May 27, 1952, No. 13441/52. Class 125 (3) Sealing means, which is compressed on to the mouth of a container by a screwec cap, is provided on its undersurface with a protuberance adapted to mould itself against the inner edges of the mouth of the container and, on its upper surface with a stud or studs through which the screwed cap transmits its pressure. As shown, the sealing means comprises a dome-shaped protuberance on its lower surface and a stud 2 on its upper surface. The sealing means has a marginal rim 3 of a height just short of that of the stud 2 so that on screwing home the cap 7 the domeshaped protuberance is compressed into the mouth of the container 5 and finally the rimming part of the sealing means is compressed on to the face of the mouth or a shoulder 4 thereon. The sealing means is preferably formed of a plastic such as polythene.
Patent GB-876407-A (GB)
Title: Improvements in or relating to paper making machines
IPC: D21F1/36
Filed: 1959-04-21
Abstract: 876,407. Tensioning paper-making machine wires. BLACK-CLAWSON CO. April 21, 1959 [April 21, 1958], No. 13558/59. Class 96. The tension in a wire-cloth of a Fourdrinier paper-making machine is maintained substantially constant at a position adjacent to the return roll 15, Fig. 3, so that the wrap of the wire W about the roll &c. is sufficient to allow the wire to be driven steadily thereby; a tension roll 22 moving upwardly to take up temporary stretch. Permanent stretching of the wire is taken up by a roll 81, Fig. 5, counterbalanced at 90 and with a manual setting handle 88 acting through a gear 86 and gear-segment 85, the roll 81 being on arms 82 pivoted at 83. The roll 22, Fig. 3, is on lever arms 23 counterbalanced at 31 and moved in response to slackening of the wire by hydraulically-actuated piston-arms 37, pressure in the cylinder 35 being continuously measured by a control console including an adjustable relief valve and a pressure gauge, flow being reversed when a solenoid valve is energized. A pointer 95 and scale 96 are fitted. Specification 725,843 is referred to.
Patent GB-122796-A (GB)
Title: Improvements in the Locking Mechanism of Drop-down Guns.
Inventor: RYLAND CHARLES
IPC: F41A3/58
Filed: 1918-08-22
Abstract: 122,796. Hyland, C. Aug. 22, 1918. Breech actions, drop-down barrel.-Consists of a locking-mechanism comprising in combination a top lever, a stem formed integral with the top lever, a separable sliding under bolt and a separable rotary top bolt operated by means of shoulders on the stem or top lever. In the construction shown, the top bolt 19 is semi-annular, and is formed with a slot 20 adapted in the unlocking position to register with the slot in the action face which receives the extension rib on the barrels. The bolt 19 is mounted in a slot in the action body and bears at each end against shoulders 21 on the top lever 14. The bottom bolt 17 is operated by an eccentric stud 16 on the stem 15. The locking-mechanism is particularly adapted for use in connexion with the action body described in Specification 119,493.
Patent GB-1076899-A (GB)
Title: Gas chromatograph moisture analyzer
IPC: G01N27/42
Filed: 1965-03-31
Abstract: 1,076,899. Determining moisture content. ESSO RESEARCH & ENGINEERING CO. March 31, 1965 [April 13, 1964], No.13681/65. Heading G1S. In a gas chromatograph hygrometer moisture analyzer for a hydrocarbon sample containing hydrocarbon and moisture portions there is provided chromatographic means for absorbing all moisture from the sample product for a predetermined time. While passing through said chromatographic means, means for removing said hydrocarbon portion, a moisture detector and means for passing the moisture portion of the sample to the moisture detector subsequent to the elimination of the hydrocarbon portion of the sample from the chromatographic means. In the apparatus described, the sample stream 1 is drawn through a valve 2 by a carrier gas from a source 3 towards an oven 4 enclosing a vaporizer 6 and chromatographic column 7 where the moisture content is temporarily absorbed. The hydrocarbon sample 1 is then drawn off by the carrier gas through a line 8a. After a time delay, e. g. 13-14 minutes, valve 8 is switched so that the output of the chromatographic column 7 may be fed to the hygrometer 11 and the moisture content indicated to a recorder 13.