baber/WOPTO huggingface dataset:
Patent GB-305973-A (GB)
Title: Improved manufacture of plastic material
IPC: C04B30/02
Filed: 1927-11-11
Abstract: 305,973. Thomas, E. Nov. 11, 1927. Fibrous plastic compositions.-Fibrous material such as asbestos is formed into a freely flowing pulp with water and is agitated with a small quantity, say 12 per cent of an oil or like substance, immiscible with water, whereby the fibre becomes uniformly coated with a film of the oily &c. substance. The treated fibres are separated from the water, and may be moulded under pressure and heat, formed into sheets, &c. The oil &c. may be modified, for example, oxidized or chlorinated during the treatment. Substances for increasing the affinity between the fibre and oil such as alum, Tuchrot 0 (a coal tar dye) may be added to the water. Numerous examples are given in the Specification, of which the following is typical :-Asbestos float is agitated with water and S per cent of wood oil; an alkaline solution of chlorine in common salt is added. When dried without pressure, a water-proof, heat-insulating material is obtained; high pressure converts it into strong carvable mass which is an electrical insulator. Other coating materials specified are pitch, tar, shellac, asphalt, rubber solution, linseed oil.
Patent GB-791042-A (GB)
Title: Improvements in or relating to microtomes
IPC: G01N1/06
Filed: 1955-10-25
Abstract: 791,042. Microtomes. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Oct. 25, 1955 [Oct. 28, 1954], No. 30470/55. Class 97(1) In a microtome, thermal expansion of a member carrying an oscillating specimen holder, or a knife holder, is used to feed the specimen for cutting, and an electrostrictive or magnetostrictive contraction of the member is used to retract the specimen. Preferably, the heating of the member is effected periodically by the passage of a direct current through a heating and inductance coil, the member having sufficient thermal capacity for its length to increase at a substantially constant rate. The periodical heating current produces the magnetic field for the magnetostrictive contraction. The downward oscillation or cutting stroke of the specimen holder 17 takes place under gravity and elastic forces in leaf spring 16 and upward motion is imparted by the interaction of permanent magnet 19 and inductance coil 23. In the form shown, heating and inductance coil 13 and inductance coil 23 are both operated by rotary switches and coil 13 is energized and de-energized just before 23 so that the magnetostrictive contraction takes place just before the specimen 18 is raised and the member 10 is restored to its uncontracted length just before the specimen holder 17 starts its downward cutting stroke. A dash-pot damping device 21 is provided to ensure even motion of the holder 17. The knife 2, which may be a safety razor blade having its cutting edge finely polished, is carried on trough 1 which is mounted for position. ing on mutually perpendicular slides 3 and 4. The thickness of the sections is preferably varied from, for example, 50 Angstrom units to 300-400 Angstrom units, by varying the duration of the periods during which current is passed through coil 13 rather than by varying the magnitude of the current. In an alternative construction a conbinuously energized non-inductively wound heating coil and a separate inductance coil are provided. The member 10 may be made of nickel iron or any other metal having negative magnetostriction. Electrostrictive material may be used and heated by means of a coil.
Patent GB-393843-A (GB)
Title: Improvements in vehicle lamps
IPC: B60Q1/11
Filed: 1932-10-31
Abstract: 393,843. Vehicle lamps. MADSEN, N. C., Videbaek, Denmark. Oct. 31, 1932, No. 30533. [Classes 75 (ii) and 75 (iv).] Mounting electric lamps in lanterns; mounting reflectors on lamp casings.- The light source in a vehicle lamp is connected to a pivotal support which is controlled by a pendulum or other balancing member so as to maintain the light beam in a normal position relative to the road when the vehicle is longitudinally tilted owing to heavy rear load. In the form shown, the sleeve d carrying the lamp holder m is pivoted at e between two plates c, and is connected to the pendulum k pivoted at j, by means of toothed sectors or the arms g, h. The arm h engages in a slot in the arm g. The lamp can be focused initially by the screw s which causes rotation about the axis e, and by sliding the holder m in the sleeve d, the screw f holding it in position. To steady the movement of the pendulum k, l, it may be enclosed in a casing u containing oil, as shown in Fig. 3, or held by a frictionally operating braking spring. A second pendulum v, pivoted at wand having an arm x which engages with a projection y on the shaft j when the vehicle is stopped, prevents any movement then. A third pendulum may be provided to prevent motion on acceleration of the vehicle, or the pendulum v may have a second arm x<1>. The reflector may be adapted to follow the movements of the light source.
Patent GB-1144686-A (GB)
Title: Capacitor
IPC: H01G4/12
Filed: 1967-07-03
Abstract: 1,144,686. Capacitors. ERIE TECHNOLOGICAL PRODUCTS Inc. 3 July, 1967 [6 July, 1966], No. 30536/67. Heading H1M. In a method of making a ceramic capacitor, a film 2 of metal stable at sintering temperatures is painted on one surface of a green ceramic film 1 to leave a margin except for a minor portion of one side at 3, a second green film of ceramic is laid exactly on the first, the arrangement is fired, to sinter and unify the ceramic layers, dipped in metal paint to form electrode 6 and electrical connection 5 to the exposed edge 3 of the internal electrode 2, and these coatings cured by low-temperature firing. By applying two coatings on opposite sides of the fired body overlapping electrode 2, a pair of capacitors in series instead of in parallel is obtained. Coating 2 may be palladium or platinum; coatings 5 and 6 may be silver since they do not have to withstand sintering temperatures. The two ceramic films may have different dielectric properties and may be selected so that the combined dielectric constant does not change with temperature.
Patent GB-427000-A (GB)
Title: An improved pocket lighter
IPC: F23Q2/08
Filed: 1934-10-25
Abstract: 427,000. Frictional pocket igniters. MALTNER, H., 14, Hermaimstrasse, Offenbach-on-Main, Germany. Oct. 25, 1934, No. 30560. Convention date, Oct. 25, 1933. [Class 75 (iii)] AU-shapedwindscreen a, adapted to surround a wickholder g, located below the top n of the casing h in a recess f, is carried by pivoted arms b so that it can be swung upwardly above the open wick cap k to provide a larger flame for lighting a pipe or illuminating purposes. The pivoted wick-cap carrier i and friction wheel m are mounted on a common pivot q and operated simultaneously as by means of a press-button v.
Patent GB-602998-A (GB)
Title: Improvements in or relating to concrete compactors or vibrated screeds
IPC: B28B1/093
Filed: 1945-11-15
Abstract: 602,998. Concrete compactors. HOLMAN BROS., Ltd., and FORD, W. J. Nov. 15, 1945, No. 30630. [Class 107] A device for consolidating concrete surfaces comprises a compactor or vibrated screed 1 extending across the width of the concrete being laid and carrying means for vibrating or hammering it to tamp said concrete,. and a pair of hand-propelled carriages 11, 13 not mechanically driven which are adapted to roll along the side forms or finished concrete between which the concrete is being laid, each end of the compactor being connected to one of the carriages which are not otherwise connected together, by lifting means whereby the compactor may either rest upon the concrete supported by the carriages, or be lifted clear of the concrete for movement to a fresh position: When the compactor batten 1 has compacted the concrete beneath it air is admitted to the cylinder 7 by a port 7a via a valve (not shown) which may also cut off the air supply to the compactor hammers. The piston 8 is forced down against the spring 10 until rocking plates 13 contact the side forms and the batten 1 is raised clear of the concrete to be now supported by the four sector plates 13. A slight sideways thrust serves to move the compactor into its next position, the whole device moving laterally about pivots 12 whilst supported on the curved faces of the plates 13. The air valve is reversed, the piston 8 rises carrying the carriage beam 11 and plates 13 upwardly and clear of the ground, allowing the compactor beam 1 to contact the concrete for the next tamping operation. Stops 14 limit the sideways movement of the sectors 13.
Patent GB-671340-A (GB)
Title: Improvements in and relating to frequency regulating systems
IPC: H02J3/08
Filed: 1948-11-26
Abstract: 671,340. Control of D.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 26, 1948. [Nov. 29, 1947] No. 30739/48. Class 38 (iii). [Also in Group XXXV] A reversible D.C. motor supplied from an amplidyne generator drives an induction-type frequency changer so as to maintain the output frequency of the changer constant. A three phase variable frequency supply 4 is connected to the stator of the converter 1, the stabilised output being obtained from the rotor. One phase of this'output is applied to a transformer 9 the secondary of which is connected, in series with an A.C. source 8 of standard frequency, to a rectifier 10 supplying one field 11 of the amplidyne generator 12. The excitation of field 11 varies from zero when the output and the standard voltages are 180 degrees out of phase to a maximum when they are in phase. Under normal conditions, the excitation of an opposing field 13 supplied from a constant voltage source s adjusted so as to almost balance that excitation of field 11 which corresponds to a 90 degrees phase difference between the two voltages. The output of the amplidyne generator and hence the torque of motor 6 is just adequate to hold the converter stationary. Any change in the phase relationship between the voltages causes the resultant excitation of the amplidyne to increase in one sense or the other, causing the motor 6 to run in the appropriate direction to correct the deviation. In modifications, a half wave rectifier may replace the bridge rectifier ; full wave rectifiers and a bias source enable a reference source of double the output frequency to be used ; or thyratron phase responsive circuits may be used.
Patent GB-307536-A (GB)
Abstract: 307,536. Rose, S. A. M. Dec. 9, 1927. Light radiations, control of apparatus by.-A selenium or other light-sensitive cell a, which is exposed to a beam of light, projected from a lamp c, and passing across a furnace flue, is utilized to control the air supply to a furnace in accordance with the density of the smoke in the flue. The cell acts through polarised and non-polarised relays f, g and solenoids h to operate one or more air supply dampers j, the movements of which are retarded by a dashpot l or other like device. In a modification, Fig. 2 (not shown), a damper is operated through a train of reducing-gearing from an electric motor, which is controlled by a switch actuated by relays.
Patent GB-1313130-A (GB)
Title: Hydrogenated fluorene dicarboxylic acid
IPC: C07C62/32
Filed: 1971-06-30
Abstract: 1313130 Sweeteners RIKAGAKU KENKYUSHO 30 June 1971 [30 June 1970 2 Oct 1970 28 Nov 1970 29 March 1971 (2)] 30763/71 Heading A2B [Also in Division C2] A sweetening agent comprises in pellet or syrup form alkali metal, alkaline earth metal. aluminium or ammonium salt of 4#, 10α- dimethyl-1,2,3,4, 5#-10-hexahydrofluorene-4α, 6α-dicarboxylic acid.
Patent GB-759175-A (GB)
Title: Improvements in and relating to electric switchgear
Inventor: GONEK STANISLAW MIECZYSLAW
IPC: H01H33/30
Filed: 1953-11-06
Abstract: 759,175. Gas-blast switches. ENGLISH ELECTRIC CO., Ltd., Nov. 8, 1954 [Nov. 6, 1953], No. 30784/53. Class 38(5) [Also in Group XXIX] In electrical switch gear employing gas under pressure for arc control or for actuation purposes, a cut-off valve inserted in the line between the source of compressed gas and a receiver is moved from the open to the closed position when the pressure falls below a predetermined value, and the pressure-responsive valve actuating device is connected to the operating member of the valve by means which can be released to permit manual operation of the valve at least from its closed to its open position. In an embodiment, gas under high pressure is supplied to a receiver 1, Fig. 1, and from there through lines 8 past cut-off valves 9, filters 10, and pressure regulating valves 7, to bus lines 5. From the bus lines the air is supplied past non- return valves 12, cut-off valves 13, filters 14, to receivers 6, these latter receivers supplying the air past blast valves 16. The valves 9 are actuated by devices 19 responsive to the pressure in the lines 5, and the valves 13 are actuated by devices 17 responsive to the pressure in the receiver 6. The pressure responsive and actuating devices 17, 19 each comprise a rod 23, Fig. 2, carrying pistons or valveheads 24, 25 and connected to the pivoted operating handle 21 of the valve by means of latches 31, 32. When the pressure of the gas is sufficiently high, 'it acts on the face of valve 24, overcomes the effect of the loading spring 30, and presses the rod to the right to keep the cut-off valve opened. When the gas pressure falls due, for example, to the blast valve sticking, the spring 30 will force the rod 23 to the left. As soon as valve 24 leaves its seat, the gas will have access to the back of the valve and the effective area on which the gas pressure then acts will be only the area of the valve or piston 25, so that the rod 23 will snap over to the left to close the cut-off valve. Any gas trapped between the two valves or pistons 24, 25 can escape to atmosphere through a bleed 38. Handle 21 may be actuated manually after depressing the appropriate latch 31, 32. When the cut-off valve moves from the open to the closed position, an arm 36 carried by the rod 23 bridges electrical contacts 33 and operates an alarm signal. If a by-pass is provided around the cut-off valve, the latter will be reset automatically when the gas pressure rises again.
Patent GB-237160-A (GB)
Title: Improvements in or relating to locking devices for adjustable rods, spindles and the like
IPC: F01L1/20
Filed: 1924-12-23
Abstract: 237,160. Napier, M. S., Wilkinson, G. S., and Tryon, H. C. Dec. 23, 1924. Spindles.-A locking-device for rods, spindles, or like members adjustable in length by screwing, comprises a member having frictional engagement with one of the screwed elements and formed with a tubular extension splined to engage a corresponding splined portion on the other screwed element. The invention is shown applied to an adjustable tappet A having screwed engagement with the valve stem B of an internal - combustion engine. A split ring C<1> 'has frictional engagement with the tappet A and is formed with an extension C splined at D to engage splines E on the end of the valve stem. The tappet is formed with a series of holes so that it may be turned within the ring C<1> by means of a tool, but the grip of the ring is sufficient to prevent undesired rotation of the tappet. Only one or two of the splines D and E extend to the extremity of the part on which they are formed, in order to ensure full engagement between the splines when screwing in the tappet. Specification 127,646, [Class 7 (vi), Internal-combustion engines, Valves &c. for], is referred to.
Patent GB-308824-A (GB)
IPC: C09K23/00
Abstract: 308,824. B÷hme Akt.-Ges., H. T. March 30, 1928, [Convention date]. Grant of Patent opposed. Emulsions, making.-Substances which may be used as dispersion agents in the textile, leather, and allied industries are prepared by converting alcohols corresponding to the higher fatty acids into sulphuric esters by the action of sulphuric acid, or oleum. Thus, olein alcohol gives the sulphuric ester of hydroxystearin alcohol, and the stearin alcohol may be esterified in the same way.
Patent GB-485172-A (GB)
Title: Improvements in and relating to high voltage measuring apparatus
IPC: G01R15/22
Filed: 1936-11-12
Abstract: 485,172. Protective cut-out arrangements. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 12, 1936, No. 30924. Convention date, Nov. 13, 1935. [Class 38 (v)] [Also in Groups XXXVI and XL] The indication on a lowvoltage circuit of the conditions on a high-voltage line by producing lightrays responsive to the high - voltage conditions and energizing a lightsensitive cell is effected by means of a current transformer 11 having its core 12 and secondary winding 13 connected to the highvoltage conductor, the light-rays being produced by an incandescent lamp or gas-discharge tube 21. An impedance 15 which may have a decreasing resistance with increasing applied voltage characteristic is connected across the device 21. An iris diaphragm 19 is employed to modify the light-rays falling on the cell 17 connected to relay 22. The Specification as open to inspection under Sect. 91 comprises, Fig. 6 (Cancelled), a voltageresponsive mercury vapour tube 24 connected to a " metal radiant ring " 25 supported by insulator 20, the photo-electric parts being energized by the tube 24. This subject-matter does not appear in the Specification as accepted.
Patent GB-946751-A (GB)
Title: Improvements in or relating to connectors on electrical devices
IPC: H01J9/34
Filed: 1959-09-10
Abstract: 946,751. Welding by pressure; making electric lamps and electronic tubes. SYLVANIA ELECTRIC PRODUCTS Inc. Sept. 10, 1959 [Sept. 26, 1958 (3)], No. 30972/59. Headings B3A and B3R. [Also in Division H1] A method of providing an electrical device 2, e.g. an electric lamp such as a fluorescent discharge lamp or an electronic tube, having a lead-in wire 6 extending therefrom, with a base 18 having an electrical contact member 16, the wire being welded to the contact member interiorly of the base or contact member, is characterized in that electrical connections from a condenser discharge welding circuit are made by electrodes 26, 22 to the wire 6 and the contact member 16, the welding circuit being completed by engaging the wire and the contact member. A similar welding circuit is used for welding the wire 4 to the contact member 14 through the electrodes 24, 20. After welding the electrodes 20, 22, 24, 26 are withdrawn and the base 18 is secured to the device 2. In the arrangement shown in Fig. 6 helically twisted lead-in wires 44 are welded to a hollow metal pin 50 on the base 46. In a modification the helically twisted lead-in wires are welded to a metal insert in the pin. In another modification, which can also be used for a two-terminal base, the end of a hollow metal pin, inside the base, is bent to form a substantially flat contact surface and a lead-in wire is welded to the surface.
Patent GB-1029352-A (GB)
Title: Improvements in thermostatically controlled fluid-flow control valve arrangements
IPC: G05D23/185
Filed: 1964-08-04
Abstract: 1,029,352. Fluid-pressure servomotor systems. M.BEHR, [trading as SDDENTSCHE IIOHLERFABRIK JULIUS FR BEHR]. Aug 4, 1964 [July 26, 1963], No. 30995/64. Heading G3P. [Also in Division F2] A valve, for controlling the by-pass of fluid in a hydraulic transmission in which the motor drives a fan associated with the radiator of an engine, comprises a main valve 33 Fig. 2 (not shown) controlling the flow from an inlet 36, to an outlet 35, the valve 33 having a restricted orifice 38 correcting the inlet to a chamber 30. A pilot valve 28 controls the exhaust of fluid from the chamber 30 to open the main valve, the valve 28 being loaded by a spring 27. The loading of the spring 27 is adjusted by a thermostat 21 in response to the temperature of engine coolant flowing to the radiator. The main valve opens to allow by-pass of fluid in the hydraulic transmission lines and closes with increased temperature to increase fan speed.
Patent GB-1411506-A (GB)
Title: Cooling system for a cutting tool drive motor of a mining machine
IPC: F04D13/02
Filed: 1973-06-29
Abstract: 1411506 Cooling mining machinery VEREINIGTE OSTERREICHISCHE EISENUND STAHLWERKE ALPINE MONTAN AG 29 June 1973 [30 June 1972] 31053/73 Heading F4U The motor (not shown), of a mining machine is cooled by water circulated through a conduit 5 by a pump 4 which recirculates the water through a conduit 6 to a cooler 7 supplied with air by a fan 8, the fan and pump being mounted on respective ends of a common shaft protruding from opposite sides of a housing of an oil-driven gear-type fluid drive 14. The drive is connected on its imput side 15 by a flow control valve 16 to the oil return conduit 17 of the hydraulic system of the machine, and on its outlet side 14 by a conduit 19 to an oil reservoir 20
Patent GB-674030-A (GB)
Title: Torque and speed changing and reversing unit
IPC: F16H3/66
Filed: 1947-11-24
Abstract: 674,030. Change-speed gear; friction clutches. DUYCK, G. Nov. 24, 1947 [Nov. 23, 1946], No. 31086/47. Class 80 (ii). [Also in Group XXXIV] A change-speed and reverse gear, which constitutes its own main-clutch, comprises two planetary trains in series, each controlled by electromagnetic friction clutches and brakes, those for the output train 26, being of the electromagnetically - initiated torque - assisted type, whilst the brake (or clutch) of the speedreducing input train 5, which is used as the starting clutch on a vehicle, is operated by two axially spaced magnets 10, 11, one, 11, of which serves to attract the armature 9, whilst the other, 10, produces the friction pressure, its energisation being gradually increased from zero whilst the magnet 11 is de-energised. (Economy in current results.) The reducing input-train shown comprises a ring gear 2 fast to the input shaft 1; a reaction sun 4, fast with an armaturedisc 9, which, for solid drive, is frictionally clutched to the driving ring-gear 2 by an electromagnet 7, or, for reduced starting drive is gradually braked by the stationary magnets 10, 11; and a driven planet-carrier integral with an intermediate shaft 5 on which is fast the driving sun 21 of the output train. The sun 21 meshes planets 25 carried by the output shaft 27 and meshing further planets 23, meshing on one side a ring gear 24 having claw teeth 29 held positively by a magnet 28 to provide two reverse ratios, and on the other side a reaction sun 15 which is clutched by a magnet 13 to the intermediate shaft 5 for solid drive, or braked by a magnet 16 for reduced drive in the output train. The direct drive clutch in the output train may be of the double magnet type, Fig. 4 (not shown), like the brake 10, 11 of the input train, but, as shown, comprises a coil-spring 18 secured at one end to the driving intermediate shaft 5 and expanded into self-tightening frictional engagement with a surrounding drum 17, rotationally fast with the reaction sun 15, by the initial friction drag provided by the magnet 13. The reduced drive brake comprises a band 19, contracted into self-tightening engagement with an underlying drum 20 by the initial friction drag of the magnet 16. Fig. 6, not shown, has the input shaft arranged inside a concentric hollow output shaft driving, through a gear-pair, an underlying parallel axle-driving bevel shaft on a front-drive or rear-engined vehicle. The friction surfaces of the clutches and brakes may be coated with powdered steel sintered with graphite or the armatures may be made entirely of this material. Reference is made to Specification 647,832 and French Specifications 936,561 and 936,563 for clutch and brake details. The Specification as open to inspection under Sect. 91, states also that the input train may multiply instead of reduce speed. This subjectmatter does not appear on the Specification as accepted.