baber/WOPTO huggingface dataset:
Patent GB-785331-A (GB)
Title: Improvements in condensers made of paper impregnated with poly-chloronaphthalenes
IPC: H01B3/24
Filed: 1955-05-03
Abstract: 785,331. Capacitors. PROGIL. May 3, 1955 [July 19, 1954], No. 12846/55. Class 37. Capacitors comprising a paper dielectric are impregnated with a polychloronaphthalene, the dielectric being subjected to an alternating or unidirectional electric field during the impregnating process until the impregnant has solidified. The Specification states that polychloronaphthalenes fall into two classes, those having the higher melting point and chlorine content normally exhibiting undesirable aging properties as regards their dielectric constant when used as impregnants; by, however, subjecting these impregnants to an electric field during solidification, this defect can be removed. The Specification describes the application of the invention to the manufacture of wound-type capacitors.
Patent GB-1077390-A (GB)
Title: Polyurethane coating compositions
Inventor: WILLIAMSON WILLIAM IAN
IPC: C08G18/08
Filed: 1966-03-23
Abstract: The process is an improvement in or modification of the processes for preparing pigmented polyurethane coating compositions claimed in Specification 979,272 and 1,001,774.  The pigment as mixed with inorganic isocyanate (e.g. P(NCO)3 or PO(NCO)3) in the presence of a urethane prepolymer containing free isocyanate groups.
Patent GB-1429492-A (GB)
Title: Driven axles
IPC: F16H48/30
Filed: 1973-03-16
Abstract: 1429492 Differential gear GKN TRANSMISSIONS Ltd 20 Dec 1973 [16 March 1973] 12864/73 Heading F2D In a motor vehicle axle of the kind having a differential housing 10 fitted to axle tubes 12, 13 surrounding half shafts 32, 33, and provided with a controllable dog clutch 44, 57 for locking the differential carrier 17 to one half shaft 33, the actuating means for the dog clutch is arranged at the outer end of the axle tube 13, therebeing an extension tube 34 between the axle tube and half shaft to transmit motion between one of the clutch elements and the carrier 7 or actuating means. This avoids the necessity for providing for actuating means in the housing 10 itself, and hence allows one housing to be used for axles with and without locking provision. In Fig. 1, the extension tube 34 transmits torque from the carrier 17, through permanently engaged dog teeth 36 to one clutch element 41 splined on the tube 34. The other clutch element 53 is biased out of engagement by a spring 58 reacting against the carrier 17 through the tube 34, and, through a thust bearing 59 and non- rotary piston 47, against a stop shoulder 63 on a cylinder 45 attached to an outboard housing 37. Supply of hydraulic pressure from a conventional master cylinder to a chamber 52 acts on the annular piston 47 to engage the dog clutch 44, 57. In Fig. 2, not shown, the dog clutch (80, 96) is at the carrier end of the half shaft, and is engaged by a piston at the outboard end, thrusting through the extension tube (99) which does not now transmit torque. In both cases the dog teeth 36 on the carrier 17 lie within the axial length of the carrier bearing 20, so that no increase in the size of the assembly aperture, covered by a pressing 61, is required. A mechanically acting shift fork may replace the hydraulic piston.
Patent GB-586448-A (GB)
Title: Improvements in magnetic couplings
IPC: H02K49/06
Filed: 1944-07-06
Abstract: 586,448. Electromagnetic clutches. PENSABENE, N. July 6, 1944, No. 12909. [Class 35] In a coupling with a shroud separating the two rotors, the latter have more than two cooperating sets of teeth facing one another and separated by a number of air gaps arranged in series in the magnetic circuit of a core having a stationary exciting winding, alternate sets of teeth pertaining to the same rotor. In the form shown, the driven rotor N2 has magnetic insets S in a non-magnetic carrier co-operating with two sets of teeth T, T1, on the driving rotor N1, there being a non-magnetic shroud Q between the two rotors for completing the enclosure of the motor on the shaft M. The rotor N1 is separated by small air gaps from the fixed core F, carrying the exciting coil C. In a modification, the driving rotor consists of little more than the two rows of teeth and is placed in the annular gap of a pot-shaped fixed field magnet.
Patent GB-551133-A (GB)
Title: Improvements in and relating to pressure-operated valves
IPC: F16K31/56
Filed: 1941-10-13
Abstract: 551,133. Electromagnetically actuated valves. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 13, 1941, No. 13157. Convention date, Oct. 15, 1940. [Class 135] An electromagnetically actuated valve particulariy adapted for use with air-blast electric circuit breakers is urged towards its closed position by springs and is opened by an electric motor acting through toggle link mechanism held in its over-centre position by electromagnetic means, which when de-energized allows the toggle to break and permit the rapid closing of the valve independently of the position of the motor. In the form shown in the Figure a T-shaped lever 14 mounted on a fixed pivot 15 has one arm 17 with rollers 18 bearing on abutments loaded by springs 19 and an arm 16 pivoted to the spindle 13 of the valve which may be of the balanced packed piston type. The third arm 14 is pivoted at 20 to a toggle link 21 itself pivoted to a toggle link 23 having an extension 23<SP>1</SP> adapted to be engaged by a roller 37 on a crank arm 36 rotated by an electric motor 34 acting through reduction gearing. The link 23 is pivoted to an arm 251 on a shaft 25 pivoted at 25<SP>11</SP> in fixed supports and provided with arms 27 holding the armature 28 of an electromagnet 30. A spring 26 tends to hold the armature in contact with the pole pieces of the magnet and a spring 33 tends to break the toggle which has co-operating stops 31, 32 to limit its over-centre movement in one direction. The motor and electromagnet are arranged in parallel and are controlled by a pressure-actuated switch subject to the pressure in the outlet conduit 12. When the pressure in the conduit 12 is below the required value the switch is closed, the magnet is energized to hold the arm 251 stationary and so permit the motor to open the valve. When the desired pressure is reached the switch opens to de-energize the magnet and allow the arm 251 to move anticlockwise and allow the springs 19 to break the toggle and close the valve. As the valve is generally only open for a short time the motor may be allowed to continue to run after the valve has reached its open position. If it should be required to remain open a longer time a suitable cut-off switch may be associated with the extension 231.
Patent GB-1449794-A (GB)
IPC: C25B9/04
Filed: 1975-04-01
Abstract: 1449794 Electrolytic brine cells MA MELNIKOV-EIKHENBALD AF ZOLOTOV AI KUZMIN GM KAMARIAN VI DJUMULEN LI YURKOV and VL KUBASOV 1 April 1975 13162/75 Heading C7B An electrolytic cell, for producing chlorine and alkali, chlorate or hypochlorite from alkali metal chloride solution, comprises a housing 1 mounted on a current-carrying bottom 2 e.g. of Al clad with Ti sheet, a solid cathode 5 e.g. metallic screen welded to the housing and solid anodes 6 e.g. perforated Ti sheet with active coating accommodated within the housing and at least one current-supplying upright partition 7 with anodes secured thereto and integral with the bottom. The or each partition 7 may be made of a three-layer metal sheet Figs. 3 and 4 (not shown) or two bi-metallic sheets Fig. 5 (not shown), the outer layers (8, 14) being of Ti and the inner layer(s) (9, 15) being of Al, Cu, Fe or alloy thereof. The anodes may be secured to the partition using Ti bolts (10), nuts (11) and welded sleeves (12), or by welding (Fig. 5). A liquid permeable diaphragm may be applied to the cathode.
Patent GB-749010-A (GB)
Title: Improvements in or relating to devices for lubricating the dies of presses
IPC: F16N7/32
Filed: 1954-05-12
Abstract: 749,010. Metal-working presses. HOLT & MOSEDALE, Ltd., HOLLAND, T. S., and HOLLAND, A. S. May 12, 1954 [May 12, 1953], No. 13172/53. Class 83 (4). [Also in Group XXVIII] A device for applying lubricant to the dies 24 of a press comprises one or more lubricant discharge nozzles 23 operatively connected to a body portion 10 mounted on a stationary part 18 of the press and movable from an inoperative position in which they are clear of the dies to an operative position in which they are disposed between the dies, means being provided for controlling the movement of the nozzles and the discharge of lubricant therefrom. The lubricant is preferably graphite and is discharged from the nozzles as a fine spray by compressed air. A pair of nozzles 23 are mounted on a valve chamber 65 carried by a lazy-tongs linkage 21 mounted on spindles 27 rotatable in the body portion 10. The spindles carry intermeshing gears 28, Fig. 5, one of which is driven by a gear 32 in mesh with a rack 33 of a compressed air motor 34. To operate the device a manually operated valve 38 is opened to allow compressed air to pass through an interlock valve 41 to a main control valve 43 where it moves to the left a piston 44 thereby connecting a main air supply pipe 45 with a port 46 and pipe 40 leading to an oil reservoir 47. The air thus forces the oil through a restrictor 48 to the motor piston 49 moving it to the right and thereby extending the lazy tongs linkage to position the nozzles between the dies. A valve 64 mounted on the linkage is then opened by engagement with a fixed abutment 66 to allow compressed air from a supply line 63, reducing valve 62 and pipes 61, 72 to pass to the valve chamber 65 where it opens a spring-loaded check valve and is admixed with graphite discharged by air pressure from a container 67, the graphite extrained air being then sprayed through the nozzles. The control valve 43 incorporates a timing piston 53 connected through port 52 with the port 46. The other side of this piston is connected through pipe 58 and restrictor 59 with an oil reservoir 60 supplied with compressed air at reduced pressure from the reducing valve 62. Thus the timing valve moves slowly to the right during and after the movement of the motor piston and the speed of movement may be adjusted by regulating the reducing valve 62. As the timing valve reaches its right-hand position it opens a duct 55, thereby allowing the compressed air to act differentially on the valve piston 44 moving it to the right. Compressed air thus passes through pipe 50 to the right-hand side of the motor piston 49 and the pipe 40 and port 52 are connected to atmosphere through port 57. The motor thus reverses to retract the nozzles. The interlock valve 41 is opened by the ram 25 of the press and thus ensures that the lubricating device cannot be operated until the ram is in its upper position. A further interlock valve 68 operatively connected to the clutch of the press ensures that the press cannot be started until the nozzles have been withdrawn.
Patent GB-1516664-A (GB)
Title: Gas turbine engine with fluidised bed combustion
IPC: F02C3/20
Filed: 1975-04-01
Abstract: 1516664 Gas turbine combustion chambers ROLLS-ROYCE Ltd 17 March 1976 [1 April 1975] 13208/75 Heading F1L [Also in Division F4] In fluidized bed combustion apparatus 14 comprising a chamber 14a containing a bed of inert materials and particulate fuel supplied with fluidizing and combustion air in substantial excess of that required for stoichiometric combustion, a metered supply of particulate fuel is fed into the bed in dependence of the bed temperature to maintain the bed at a constant predetermined temperature. As shown the particulate fuel, which may be coal, is pneumatically fed into the bed through a duct 24 which has a valve 25 controlled by a temperature sensor 30 comprising a stainless steel tube 32 enclosing a quartz rod 34. Changes in bed temperature produce a relative movement between the rod 34 and tube 32 and this movement is used to operate the valve 25 via linkage 36, the fuel either flowing into the bed or being returned to a store (not shown) along a duct 28. The fluidized bed 14 is divided into a number of independent chambers 14a each provided with an air cleaner 14b and a control valve 14c. The control valves 14c can be operated together or independently of each other to open or close or vary the flow of combustion and fluidizing air to any or all of the chambers. The coal-burning fluidized bed apparatus is used to heat the working fluid of a gas turbine power plant 10 which includes a compressor 12, a driving turbine 16 and a power turbine 18 arranged to drive a load 20, e.g. a generator. A by-pass valve 26 is provided to alter the air-flow through the bed, said by-pass air being mixed with the hot gas output from the bed prior to it entering the turbine 16.
Patent GB-1170883-A (GB)
Title: Improvements relating to the purification of gases by ionisation.
Inventor: EBERT PAUL
IPC: B03C3/10
Filed: 1968-03-19
Abstract: 1,170,883. Electrostatic precipitators. AEROPUR S.A. 19 March, 1968, No. 13227/68. Addition to 1,105,707. Heading B2J. Gases to be cleaned are passed through a chimney 77 containing discharge electrodes 85, 86 which revolve under the reaction of their discharge, the insulated base of the shaft carrying the electrodes being completely separated from the chamber in which the cleaning takes place. In a modification the shaft is suspended from an insulated assembly mounted at the top of the chimney. Gas enters through an inlet passage 83 and follows a spiral path due to the positioning of concentric screens 77, 78 and is subjected to liquid from nozzles 80. The rotation of the electrodes may be assisted by a compressed air motor. The electrodes may be articulated so that they take up a position 85', 86' and they may take the form of paddle wheels furnished with paints.
Patent GB-430536-A (GB)
Title: Photographic film cameras
IPC: G03B19/04
Filed: 1934-05-02
Abstract: 430,536. Photographic cameras. VOIGTLANDER & SOHN AKT.-GES., 7, Campestrasse, Brunswick, Germany. May 2, 1934, No. 13316. Convention date, June 15, 1933. [A Specification was laid open to inspection under Sect. 91 of the Acts, Nov. 5, 1934.] [Class 98 (i)] In roll-film cameras of the kind in which the film is fed from and into boxes 10, Fig. 2, having tangential slots 11, the film moving devices, such as spiked discs 23, coact with depressions 34 in the film supporting plate 6, so as to form burred perforations in the film 14 for the purpose of providing point contacts between the convolutions of the film as it rolls up in the receiving box, as shown in Fig. 6. In the construction described four spiked discs are mounted at the ends of two parallel shafts 24 intergeared so as to rotate in unison. The discs are positioned in housings 32 attached to the cover 3 of the camera casing. The film boxes are provided with a spring guiding tongue 15 which yields to accommodate the variations in size of the roll. The Specification as open to inspection under Sect. 91 comprises (1) a construction of film receiving box in which warts or protuberances are formed on the surface of the box for reducing the frictional resistance to the winding of the film convolutions and (2) a construction of camera in which the prongs for punching holes in the film are mounted on an endless chain. This subject-matter does not appear in the Specification as accepted.
Patent GB-133421-A (GB)
IPC: B60C7/22
Abstract: 133,421. Heggie, W. Oct. 7, 1918. Spring wheels with continuous outer resilient suspension ring.-In a wheel having a dual tread, each tread is formed by one or more rings 7 of steel or other resilient material embedded in rubber &c. 6 and suspended from the rim 2 by canvas or like bands 5. The two tyre portions thus formed may be separate or in one piece, and are clamped to the rim by a security-band 4. Rubber treads 8 are fitted as shown.
Patent GB-690941-A (GB)
Title: Improvements in gas turbine or jet-propulsion units, in particular aircraft engines
IPC: F23R3/00
Filed: 1950-05-26
Abstract: 690,941. Generating combustion products under pressure. OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AERONAUTIQUES (O.N.E.R.A.) May 26, 1950 [May 28, 1949; July 13, 1949], No. 13385/50. Class 51(i) [Also in Groups XI and XXVI] In gas turbine or jet propulsion units having a combustion chamber to which a combustion supporting gas such as air is suppliedeither continuously or intermittently, such as turbojets, ram-jets, turbo-props or impulse duct engines, the main fuel is injected in a direction transverse to the direction of flow of air or gas through the chamber, and ignition of the fuel mixture is caused by means of a flame holder located downstream of the main fuel injection. In a ram jet engine, Fig. 1, the main fuel is delivered through injectors 4 and the mixture is ignited by means of a grid-shaped member 6a which receives air through the tubes 8 and igniter fuel which is different from the main fuel, from a tank 9. The igniter flames issue from the ends of the tubes of the grid and once ignition of the main fuel mixture is started, the igniter is stopped and the grid member 6a then acts merely as a flame holder or flame stabilizer. The igniter fuel may be hypergolic or explosive, or ignition may be obtained by catalysis and the duration of combustion is limited to some seconds. In the gas turbine jet propulsion engine shown in Fig. 3, the main fuel is supplied through the injectors 4 and ignition is caused by means of the igniter comprising a shield 6, to which igniter fuel is supplied, and a spark plug 7, the shield 6 acting as a flame holder once ignition is started. In the reheat chamber of a gas turbine jet propulsion engine shown in Fig. 8, the main fuel is supplied circumferentially through the radial arms 15 and the ignition means comprises hollow radial arms 18 distributed round the combustion chamber 16 which receives supplementary fuel from the injector 17 and turbine exhaust gases through the annular passage a, an igniter 9 being disposed in the chamber 16. The igniter flames issue from the ends 18a of the arms 18 and once combustion is started, the arms 18 act as flame holders.
Patent GB-769015-A (GB)
Title: Improvements in or relating to electrically driven vacuum cleaners
IPC: A47L5/12
Filed: 1954-05-07
Abstract: 769,015. Vacuum cleaners. GENERAL ELECTRIC CO., Ltd., and JONES, T. G. May 6, 1955 [May 7, 1954], No. 13407/54. Class 8(1) [Also in Group XXXV] In an electrically driven vacuum cleaner of the upright or stick type in which a housing provided with a suction nozzle and a fan driven by an electric motor is arranged to be propelled over a floor with the nozzle in contact with or close to the floor and in which said motor is in a different compartment, a ventilating tube is located one side of the fan shaft axis and connects the motor compartment with the main air intake of the vacuum cleaner so allowing for air to be drawn from the motor compartment into the main air intake. The Figure shows the underside of the housing 1 (with cover plate, revolving brush &c. removed), mounted on wheels 2 and having air intake compartment 3, a fan chamber, a separate compartment 5 housing a motor 6 the shaft of which projects horizontally through a wall 7 defining the rear of the fan chamber, and a ventilating tube 8. The motor compartment 5 may have air inlet holes placed remotely from tube 8 in such manner that air drawn through said compartment into the main air intake flows over the whole of the external surface of the motor.
Patent GB-1141191-A (GB)
Title: Means for indicating the orientation of mineral mining machines
Inventor: FARNSWORTH RONALD
IPC: E21C39/00
Filed: 1965-03-30
Abstract: 1,141,191. Mining machines. COAL INDUSTRY (PATENTS) Ltd. 28 June, 1966 [30 March, 1965], No. 132489/65. Heading E1F. An arrangement for producing a signal indicative of the orientation of a mining machine in a mineral seam involves an electrical signal-producing strain gauge by which is measured the load on a cutter tool operating for at least part of its travel in the seam adjacent an interface between the seam and an adjacent stratum. Preferably the gauge reads the load the tool exerts on the holder by which the tool is supported in the cutting means of the machine.
Patent GB-466535-A (GB)
Title: Processes for rendering textile webs containing cellulose water repellant and crease-proof
IPC: D06M15/39
Filed: 1936-05-13
Abstract: Cellulosic textile materials are rendered both crease-proof and water-repellent by treatment with an emulsion of paraffin or a higher fatty acid anhydride &c., in conjunction with a treatment consisting in forming a resin of the urea-formaldehyde type on the material. The higher fatty acid compound must be capable of forming an ester with cellulose.  The treatments may be carried out in separate stages, the water repellent treatment being preferably the first; but both treatments may be carried out in the same bath, or the material may be treated in a bath containing the waterproofing agent and urea &c., and then in a second bath with formaldehyde.  In examples, a mixed cotton-artificial fibre fabric is impregnated with a solution of urea, formaldehyde, ammonia, and paraffin-emulsion, then after wringing, passed through a formaldehyde solution containing ammonium sulphate, and finally dried and heated; a cotton web is first impregnated with a paraffin-emulsion, next with a solution of urea, acetic acid, caustic soda, and aluminium thiocyanate, then with a solution of formaldehyde and aluminium thiocyanate, and finally dried and heated.  Specification 451,082 is referred to.
Patent GB-567090-A (GB)
Title: Improvements in fluid-tight glands and packings
IPC: F16J15/52
Filed: 1943-08-20
Abstract: 567,090. Stuffing - box substitutes. HOLLAND, L. Aug. 20, 1943, No. 13590. [Class 122 (v)] A fluid-tight seal between parts 1, 6 having relative oscillatory movement, comprises a sleeve secured at its ends to the two parts and encircled by reinforcing rings 12.
Patent GB-404309-A (GB)
Title: Improvements relating to filters
IPC: B01D37/02
Filed: 1932-05-12
Abstract: 404,309. Filters. STUART, L. D., 86, Tressillian Road, Brockley, London. May 12, 1932, Nos. 13673/32 and 10470 /33. [Class 46.] Edge filter elements of the kind having pulverulent material deposited on their outer sides to aid filtration are provided with means for securing a substantially axial line of weak adhesion for the cake of solid matter formed thereon, so as to facilitate the removal of the cake by back flushing. This line of weak adhesion may be obtained by building up the elements of plates having eccentric portions or peripheral projections 15, Fig. 6, which are aligned on the elements, or by fixing a longitudinal rib 15a, Fig. 10, on the built-up elements. The elements may be formed of mild steel or other metal plates which have been minted or embossed under controlled pressure with unrestricted outward flow of metal to the periphery of the plate during the minting or embossing operations. The plates may have a serrated periphery la, Fig. 5, and heart-shaped spacing projections 3. The radius of the plates may be about 100 times their distance apart when piled to form the elements. In the construction of filter shown in Fig. 1 the elements are suspended from a plate 4 to which a cover 6 is attached by studs 6a and which is attached to the container 5 by studs 4a, the arrangement being such that the plate 4 with the elements and cover attached thereto can be removed from the container for discharge of the cakes. The liquid is supplied to the container through a pipe 8 and filtrate is discharged through a pipe 7. The header has a connection 11 for the supply of back-flushing fluid. The supporting rod or tube for each element may be formed so as to give equal pressure of back-flushing fluid over the length of the element. Fig. 3 shows a tube 2 with perforations 2a which are larger towards the outer end and Fig. 4 a rod 2 with a passage 2b increasing in sectional area. The bed of filter aid is formed on the outside of the elements by passing through the filter a suspension of filter aid of gradually decreasing concentration.