baber/WOPTO huggingface dataset:
Patent GB-996278-A (GB)
Title: Improvements relating to electrical capacitors
IPC: H01G2/14
Filed: 1963-07-22
Abstract: 996,278. Capacitors. SIEMENS & HALSKE A.G. July 22, 1963 [July 23, 1962], No. 28877/63. Heading H1M. In a self-healing electric capacitor in which connection is made to the edges of the electrodes, the electrodes are sub-divided by a series of insulating strips spaced apart along the edges and extending towards but not as far as the opposite edges. Fig. 3 shows a metallized layer 1 forming a capacitor plate and provided with spaced insulating strips that extend from and sub-divide the edge 2 to which electrical connection is made. If a burn 4 is formed by pulse loading it will tend to extend lengthwise owing to the current concentration at the edge of the burn shown by the lines 3. The strips 6 and 7 limit the lengthwise extension of the burn. The current concentration at the end 9 of strip 7 tends to cause an insulating burn which eventually extends to the edge, so that in effect strip 7 extends from edge to edge. The edge 2 may be reinforced by a thicker deposit of metal.
Patent GB-445550-A (GB)
Title: Improvements in or relating to gas turbines
IPC: F02C3/00
Filed: 1934-10-09
Abstract: 445,550. Gas turbines. OFFEN, A., 102, St. John's Road, Redhill, Surrey. Oct. 9, 1934, Nos. 28929/34 and 16862 /35. [Classes 110 (i) and 110 (iii)] The rotor of a gas turbine has explosion chambers 34 co-operating with compressed air-supply ports 58 in a fixed member 42, and fuel injection nozzles 76. The combustion products pass through reaction nozzles 37 to partial rings of fixed guide blades 38 and then to rings 50 of axial flow blading on the rotor shaft. Ignition is started by plugs 195, and is continued by flame passing through ducts 86 from a chamber in which ignition has taken place to a following chamber which has just been charged. These ducts 86 are formed in blocks 87 which are adjustable with respect to the stator by rods 90 connected to the valve gear so that the motor can be controlled by varying the ignition. A gear-driven fuel pump is provided, the delivery of which is controlled by a manual regulator. For supplying charge and scavenging air a multistage centrifugal compressor is mounted on the turbine shaft. It has a variable inlet valve and means for spraying water into the air current. Means are also provided for removing unvaporized water and returning it backwards through thermostatically controlled regenerators. A fan on the lowpressure side facilitates exhaust. Ports in the stator allow scavenging air to pass through the combustion chambers. The outer casing is lagged, and the combustion chamber is water-jacketed, the amount of water supplied being controlled by a thermostat. The form of rotor shown in Fig. 6 may be modified. Gearing is provided for driving the power, e.g. propeller shaft, and shafts for fuel and lubricating oil pumps.
Patent GB-394204-A (GB)
Title: Improvements in steam generators
IPC: F22B27/08
Filed: 1932-10-17
Abstract: 394,204. Water-tube steam boilers. VUIA, T., 7, Rue de Toulon, Garches, Seineet-Oise, and YVONNEAU, E., 35, Avenue du Parc Montsouris, Paris, both in France. Oct. 17, 1932, No. 29030. Convention date, Oct. 19, 1931. [Class 123 (ii).] In a steam generator comprising a chamber 1 in which fuel injected at aperture 17 is ignited by a sparking plug 2, the combustion gases then passing outwards through concentric chambers 4, 5, 6 containing water tubes formed of coils 8, 9, 10 in series and coils 81, 91, 10<1> also in series, the connections of the coils are formed by unions outside the combustion chamber 1 and hot gas circulating chambers 4, 5, 6. The water enters at inlets 13, 131, passes through coils 8, 8<1>, then through unions to the left of endplate 3 to a cooling jacket 15 for the sparking plug, then through further unions to coils 9, 9<1> and finally through unions at the right-hand side of the apparatus to coils 10, 101 which end in steam outlets 14, 14<1>.
Patent GB-814760-A (GB)
Title: Casings and method of making same
IPC: A22C13/00
Filed: 1956-09-24
Abstract: Casings for sausage and similar products are made by coating a cellulosic tubing of non-woven, non-knitted sheet material with a filmforming vinylidene resin containing at least 5 per cent by weight of vinylidene chloride, inflating the coated tubing, treating it in the inflated state until the coating is substantially tack-free, and then heating it in the inflated state to a temperature and for a time sufficient to cause the coating to adhere tenaciously to the tubing but insufficient to harm the coating or tubing.  Suitable resins are those formed by copolymerizing at least 5 per cent of vinylidene chloride with vinyl esters, methyl vinyl ketone, methyl isopropenyl ketone, acrylic esters, styrene, vinyl naphthalene, ethyl vinyl ether butyl vinyl ether, N-vinyl phthalimide, N-vinyl succinimide, N-vinyl carbazole, methylene diethyl malonate, itaconic acid or mixtures thereof.  The coating may be applied from a solution, dispersion, emulsion, plastisol, organosol or melt, by dipping, spraying, extrusion or other known method.  Suitable base tubing may be made from regenerated cellulose or cellulose ethers which may be reinforced with fibres such as those employed in the production of yoshino paper, rice paper and the like; hemp, rayon, flax; nylon, polyethylene terephthalate, polymers of or containing acrylonitrile, and the like.  The base tubing may be transparent, opacified, dyed, coloured or printed with informative or decorative material.
Patent GB-617395-A (GB)
Title: Improvements relating to electric traction control equipment
IPC: B60L15/04
Filed: 1946-09-30
Abstract: 617,395. Master control of D.C. motors. GRAY, W. T., and METROPOLITANVICKERS ELECTRICAL CO., Ltd. Sept. 30, 1946, No. 29115. [Class 38 (iii)] In order to ensure that the resistance notching drum or like apparatus of a series-parallel traction equipment is always in the correct position to begin cutting out resistance from the motor circuit, the drum is unidirectionally rotated by a pilot motor when the master controller is moved during acceleration, means being provided so that once rotation of the drum has begun it continues until the starting position is again reached. Initial movement of the master controller connects the motors M1, M2 in series across the line through resistors R1, R2. Further movement of the controller supplies the pilot motor PM through the drum contact IS and, as soon as the drum ID moves, a positive supply for the pilot motor is established through contact IS and the drum will be rotated until it again reaches the starting position during which time resistance is removed from the motor circuit, contact C finally being made to short-circuit the rheostat with the motors in full series. Further movement of the master controller provides firstly the " bridge " transition connection and secondly the parallel connection of the motors with the rheostat in circuit. The pilot motor is again supplied and the drum functions as before to remove resistance from the motor circuit, contact C establishing the full parallel connection. If an overload occurs, a line switch is tripped and the whole of one resistor inserted in series with the fault, the time delay relay TDR opening subsequently to disconnect the motors from the line. A reversing contactor is provided in the master controller.
Patent GB-1400170-A (GB)
Title: Machine for performing an operation on articles
IPC: B23D21/00
Filed: 1972-06-21
Abstract: 1400170 Trimming cans AMERICAN CAN CO 21 June 1972 [2 July 1971] 29163/72 Heading B3W [Also in Division G3] An apparatus for performing an operation on articles successively aligned at an operating station comprises a reciprocable electrohydraulic means for transferring articles into and out of the station by a forward and reverse stroke and electro-mechanical means, including rotatable drive means, operable to generate an electrical signal for each rotational cycle thereof to actuate the electro-hydraulic means. Can trimming machine.-A can body trimming machine 10, Fig. 1 comprises a rotatable turret 12 which is indexed to align an untrimmed can body C with a trimming station 14 and a pistonrod 16 which is reciprocable in an hydraulic cylinder 17. The turret 12 is indexed through drive pins 58 by each rotation cycle of a drive means 22 having a cam and gear unit 46 driven at constant speed by a motor 26. A can receiving mandrel 64 and sector knife 68 are continuously driven and the knife co-operates with a cutter member 70 to trim a can when it has been transferred to the mandrel by the piston-rod 16. Servo-system.-The hydraulic cylinder 17 Fig. 2, is positioned by the selective operation of a servo valve 18 comprising a valve spool 114 displaceable to selectively connect pipes 90, 92 to delivery and return pipes 106, 108. The spool is displaced by a spring-loaded ball of an armature member 156 of a polarized torque motor 154. The coils 158, 160 of the motor 154 are energized from an amplifier 168 of an automatic electric control system. Control-system.-A main shaft 38, Fig. 2, of the machine drives a synchron-resolver 168 which through a demodulator 173 and clipper 176 provides an indexed position signal to a summing means 184. A second signal is also applied to the summing means from a linear variable differential transformer 24 coupled to the ram 16. The summing means 184 is responsive to the two signals to provide zero, and positive and negative constant magnitudes which are fed to the amplifier means 186 and through the torque motor provide four stages of operation of the piston 16 during a rotation cycle of the drive means 22 of the machine 10.
Patent GB-195679-A (GB)
Title: Improvements in or relating to the treatment of fibres used in the manufacture of brooms and the like
IPC: A46D9/00
Filed: 1921-11-04
Abstract: 195,679. Rushworth & Co., Ltd., H., Caldecott, F. W., Rushworth, H., Horrocks, T. R., and Rushworth, J. Nov. 4, 1921. Cleaning fibres and the like.- Fibres or bristles for brooms are cleaned in a machine comprising a rotary beater 4, Figs. 1 and 3, a series of rotary brushes including a wire brush 2 and a fibre brush 3, and a conveyer for carrying the fibres by their ends past the beater and brushes, the conveyer including endless chains or belts 17 faced or provided with bands of rubber &c. 25 and carried over sprocket wheels 14, the belts being guided and pressed towards each other by adjustable plates or bars 27. The fibres are fed by hand or by a .conveyer belt 8 to the gripping device where the beater 4 removes the short and loose fibres, the brush 2 roughly cleans them and the brush 3 polishes them. In a modtification, Figs. 4 and 5, the chains 25 pass at one end over sprocket wheels, and at the other end over adjustable guide plates 13, while the rubber bands 33 pass over pulleys 29, the upper pressure bar 27 being pressed towards the lower bar by means of weights 38. The fibres are cleaned by combs 2, 3, comprising a number of bars 39 of metal &c. arranged transversely six combs each comprising four bars being bolted together by bolts 40 with distance pieces and clamps 41. The fibres pass on to a conveyer and thence to a second set of combs &c. where the other ends of the fibres are treated.
Patent GB-243901-A (GB)
Title: A new or improved manicure instrument
IPC: A45D29/02
Filed: 1924-12-09
Abstract: 243,901. Willetts, W. A. Dec. 9, 1924. Nail files, cutters, and cleaners. -The limbs a of a pair of tweezers a<6> are formed along their sides with cutters a<3> having outwardly-pointed ends a<4> and with serrations a<5> providing a grip and serving as nail files, the jointed end a<2> being shaped to form a nail-cleaner. The device is held closed by a strap b slidable on the limbs a.
Patent GB-1223163-A (GB)
Title: Improvements in or relating to satellite communication systems
IPC: H04B7/185
Filed: 1968-06-21
Abstract: 1,223,163. Radio signalling. NIPPON TELEGRAPH & TELEPHONE PUBLIC CORP. 21 June, 1968 [24 June, 1967; 24 July, 1967], No. 29632/68. Heading H4L. In a radio communication system wherein a plurality of earth stations communicate via an orbiting earth satellite, earth stations in an area of high rainfall use a frequency band which is less susceptible to rainfall interference and earth stations in areas of low rainfall use a frequency band which is more susceptible to rainfall interference. This allows a greater bandwidth to be used to increase the traffic capacity. A supervisory circuit monitors the signal strength and signal-to-noise ratio at each station to enable the appropriate carrier frequencies to be allotted. Each ground station may co-operate with a further spaced ground station on a space diversity basis, the two stations being connected by landline, to further minimize the effects of rainfall.
Patent GB-1503550-A (GB)
Title: Continuous roughing mills
IPC: B21B31/24
Filed: 1975-07-15
Abstract: 1503550 Rolling mills POMINA FARREL SpA 15 July 1975 [18 Dec 1974] 29650/75 Heading B3M A roll stand for a continuous roughing mill in which successive stands are similar but have vertical and horizontal rolls is provided with two rolls 3 and 4, Fig. 4, mounted in respective supports 10 and 11, each support having two arms 12 and 13 with aligned part-cylindrical recesses for supporting chocks 34 and 35 at the ends of a roll. The arms 12, Fig. 6, of the two supports are pivoted about axes 9 and adjustable towards and away from each other (to vary the roll spacing) by a threaded 19 rotatable by a motor 16. A balancing jack 27 urges the supports apart. The rolls are readily removable axially from the supports and are also axially adjustable. The roll 4 is adjusted by changing the thickness of a spacer 40 between an extension 37 of the chock 31 and the adjacent arm 12. The roll 3 is adjustable by nuts 50 and 51 which can vary the position of a chock extension 47 relative to a threaded bolt 50. A jack 52, 53 balances the roll 3. Rotation of the rolls is by couplings 58, 59 which connect the rolls to shafts 60, 61. The shafts have toothed couplings 79 at their lower ends which permit a limited pivotal movement of the shafts to accommodate lateral roll adjustment. The couplings 79 are rotated by hollow shafts 70 and 71 which are geared together and driven (through gearing 89, 90, 92 and 96) from a drive shaft 97 common to all the stands. Alternatively, a lateral drive shaft 94 may be provided for the stand.
Patent GB-1456958-A (GB)
Title: Process for the preparation of thienopyridines
IPC: B23D53/12
Filed: 1975-07-15
Abstract: 1456958 Preparation of thieno-pyridines PARCOR 15 July 1975 [16 July 1974] 29699/75 Heading C2C A process for the preparation of thieno[3,2-c]- pyridine or thieno[2,3-c]pyridine comprises cyclizing respectively N-(3-thienyl)-methyl-N- [2,2 - (OR) 2 ]ethyl - para - toluene sulphonamide or N - (2 - thienyl) - methyl - N - [2,2- (OR) 2 ]ethyl - para - toluene sulphonamide, in which R is an alkyl group containing 1 to 4 carbon atoms or both R groups form together a 2- or 3-membered alkylene radical, by treatment with an acid in the presence of an inert organic solvent at a temperature of from 50 C. up to the boiling point of the reaction mixture.
Patent GB-697476-A (GB)
Title: Improvements in and relating to the separation of phenols
Inventor: KUNZ WERNER
IPC: C07C37/68
Filed: 1950-12-05
Abstract: 4 - Methyl - 2 : 6 - di - tert. - butylphenol is separated from mixtures thereof with one or more other phenols containing from nought to three alkyl substituents (desirably of not more than four carbon atoms) by treating such a mixture with potassium or sodium hydroxide, a monohydric aliphatic alcohol (e.g. methanol, ethanol, a propanol or a butanol) and water, and separating the desired product which is thereby precipitated in crystalline form. The alkali, alcohol and water are preferably admixed prior to their addition to the mixture of phenols.  The crystals after separation (e.g. by filtration or centrifuging) may be washed with a monohydric aliphatic alcohol (e.g. methanol), which may contain water, this step being particularly desirable if the initial mixture contains any 4 - ethyl - 2 : 6 - di - tert. - butylphenol, which compound is liable to separate simultaneously as an oil on the crystals of the 4-methyl compound.  The process is applicable particularly to the treatment of mixtures obtained by butylating a mixture of cresols or of cresols and xylenols, which mixtures should desirably contain at least 10 per cent (preferably more than 20 per cent and especially 30-60 per cent) by weight of 4-methyl-2 : 6-di-tert.-butylphenol.  When this compound constitutes more than 50 per cent by weight of the mixture, part of it may already be in crystalline form, in which case the treatment by the process of the invention may be preceded by removal of the crystals by filtration or warming of the mixture until they disappear.  In examples: (1) a mixture of about 50 per cent of 4-methyl-2 : 6 - di - tert. - butylphenol with other alkylated phenols, obtained by butylation of a commercial xylenol fraction also containing cresols, is treated with aqueous methanolic caustic potash, and the resulting crystals are filtered off and washed with aqueous methanol; (2) mixtures containing 10, 20, 30, 40, 60, 70 and 80 per cent of 4-methyl-2 : 6-di-tert.-butylphenol are similarly treated; (3) the caustic potash in (1) is replaced by caustic soda.
Patent GB-1062546-A (GB)
Title: Sight glass assembly
IPC: G01F23/02
Filed: 1965-07-14
Abstract: 1,062,546. Liquid level indication. C.E. MEGINNIS. July 14, 1965, No.29762/65. Heading G1H. In a sight glass assembly a sight glass 21 has a packing ring 30, compressed by an adjustable ring 32, disposed around its periphery and an insert 22 of an insert or corrosive-resistant material disposed between the ring 30 and the opening in the housing structure 13. In an alternative arrangement the insert is glass lined.
Patent GB-573719-A (GB)
Title: Process for the enrichment of vitamin e active compounds
IPC: A61K31/355
Filed: 1939-11-10
Abstract: Natural substances having vitamin E activity such as wheat germ oil concentrates are esterified with lower fatty acids, the product being then fractionated by high vacuum distillation to concentrate the esterified vitamin E.  In examples: (1) the unsaponifiable portion of wheat germ oil is esterified with acetic anhydride and sodium acetate and after removal of the excess acetylating agent the sterol esters are precipitated by adding solvents such as methyl alcohol, acetone or petroleum ether, and the remaining solution is distilled under high vacuum; (2) the unsaponifiable portion of cotton seed oil is dissolved in pyridine and heated with butyric anhydride, the reaction product being treated as above.
Patent GB-605279-A (GB)
Title: Improvements in or relating to method and apparatus for the cutting of metal dies for casting optical selector nets
IPC: B44B3/04
Filed: 1945-11-08
Abstract: 605,279. Shaping curved surfaces. RELIEPHOGRAPHIE SOC. POUR L'EXPLOITATION DES PROCEDES DE PHOTOGRAPHIE EN RELIEF M. BONNET. Nov. 8, 1945, No. 29863. Convention date, Dec. 1, 1944. [Class 83 (iii)] The surface of a cylinder is engraved by a cutting tool oscillating about an axis disposed at right angles to a plane containing the axis of the cylinder and passing through the longitudinal axis of the tool, the tool being dis. engaged from the work after each operative stroke. The tool 21, Fig. 8, is mounted in a holder 20 adjustable on an arm 19 fixed to a shaft 18 eccentrically mounted in a sleeve 8. The shaft 18 has a lever 17 oscillated by a rod 16 connected to cranks 15 on a shaft 14 rotated by a main shaft 24 through bevel gears 22, 23. To lift the tool from the work during the return stroke, a cam 13 on the shaft 14 acts on a spring-loaded lever 9 and rotates the sleeve 8. The cam and the roller 12 on the lever separate during the cutting stroke so that the depth of cut can be adjusted by an abutment 11. The work-piece 6 is wrapped round a holder 5 on a shaft 2, having a ratchet wheel 29 and a lead screw 3 engaging a nut 4 and is rotated and fed axially after each cutting stroke by a pawl bar 28. The pawl bar is carried on arms mounted on eccentrics 25 on the main shaft 24 and is counterbalanced by a weight 33 on arms mounted on eccentrics 30 oppositely disposed to the eccentrics 25. For cutting grooves of elliptical or similar cross-section, a pantograph, Fig. 9, is fitted between the levers 17 and 9 and has an adjustable roller 39 engaging a patter 40, which corresponds in function to the abutment 11 in Fig. 8. Fig. 4 illustrates the cutting action of the tool across the groove while oscillating about the axis XY and shows a tool, which may be diamond-tipped, having a straight cutting edge C and a rear face D having angles α and # which are as large as possible within the limits necessary to prevent the rear face touching the work at the end of the cutting stroke. For cutting cells of part-spherical cross-section in the workpiece, the tool may have a circular cutting edge of radius equal to the distance of the tip from the axis XY of oscillation and by adjusting the tool round a vertical axis in the holder 20, the cutting edge can be placed obliquely to the work and cells of smaller radii than the edge of the tool can be cut. The setting of the tool may be facilitated by projecting the silhouette of the cutting edge and the bottom of the groove on a screen. The apparatus is particularly applicable to the engraving of moulds for casting lenticular optical selector nets; any scratches due to imperfections in the tool lie across the part-cylindrical lens instead of along it.
Patent GB-340598-A (GB)
Title: Improvements in or relating to the froth flotation concentration of minerals
IPC: B03D1/001
Filed: 1929-10-02
Abstract: Oxidizing agents, for example alkali bichromates, permanganates or chlorates, ammonium persulphate or hydrogen peroxide, are added to flotation pulp either during or subsequent to grinding to destroy flotation poisons in the form of soluble metallic salts, e.g. ferrous sulphate, which are associated with or contained in the minerals to be concentrated.  An example is given of the separation of copper sulphides from iron pyrites using potassium bichromate as oxidizing agent, lime as a depressant and cresol, pine oil and potassium xanthate as flotation reagents. Specifications 11471/13 and 22145/14, [both in Class 82 (ii), Washing granular &c.], are referred to.
Patent GB-842178-A (GB)
Title: Improvements relating to suspensions for axle-driven auxiliary apparatus disposed under vehicles
Inventor: AUSTIN CHARLES VALENTINE
IPC: B61D43/00
Filed: 1957-09-24
Abstract: 842,178. Belt gearing. STONE & CO. (DEPTFORD) Ltd., J. Sept. 15, 1958 [Sept. 24, 1957], No. 30011/57. Class 80 (1). An auxiliary apparatus 10, such as a generator, driven by a belt 12 from the wheel axle 6 of a railway vehicle is pivotally supported at 9 on links 7 which are in turn pivoted at 4 to a bracket 2 secured to the underframe 1 of the vehicle. The arrangement is such that the weight of the generator 10 acts to tension the belt 12 and the links 7 are in addition acted upon by a spring 18 at 16 to limit the change of tension on changes of centre distance.