baber/WOPTO huggingface dataset:
Patent GB-863462-A (GB)
Title: Improvements in or relating to regulated rectifier power supply equipment with standby
Inventor: KELLY RICHARD
IPC: G05F1/34
Filed: 1957-07-16
Abstract: 863,462. Unattended repeaters. STANDARD TELEPHONES & CABLES Ltd. July 11. 1958 [July 16, 1957; Feb. 28, 1958], Nos. 22489/57 and 6533/58. Class 40 (4). [Also in Group XXXV] In a regulated power supply system for supplying a uni-directional current to amplifiers dispersed along a telecommunication cable, the power supplies at the ends of the cable are connected in series and each supply may comprise a plurality of parallel connected units controlled by magnetic comparators. As shown. Fig. 2, a transformer N feeds a rectifying and smoothing arrangement R through a transductor C controlled by an intermediate transductor B. Windings on the intermediate transductor are fed from a constant current supply A, Figs. 5, 6, not shown, and from a load voltage, mains voltage, and frequency compensating network E so as to tend to maintain the load current constant. A further control current to the intermediate transductor is derived from a magnetic comparator F, through a double bridge modulator G, supplied with a second harmonic of the mains frequency from windings on the intermediate transductor, and a magnetic amplifier H so as to modify the output voltage/ current characteristic as shown in Fig. 1, in which two supplies are fed from opposite ends of the cable, the dotted line I being the stabilized current and AOBC, DOEF the desired modified characteristics. The magnetic comparator compares the flux produced by a coil carrying the load current with a reference flux of a permanent magnet, or, with the flux in a saturated core. A voltage proportional to the voltage applied to the rectifier R is fed from a transformer J to a slope control circuit K from which a control winding of the comparator F is energized so as to alter its reference flux in accordance with slope AOB. For slope BC a larger current is fed to the control winding of the comparator at above a predetermined load voltage by a cut-off control circuit L. For parallel operation, two identical power units are connected in parallel with their comparators in series, and control units M1, M2, Fig. 3 (not shown), control the comparators so as to maintain equality between the current from each power unit. Alternatively, a current balancing amplifier may be employed. In the event of failure of the power supply at one end of the cable the maximum voltage is limited by the action of the cut-off control circuit L in the power supply at the other end. In the event of failure of a unit in a power supply, the appropriate comparator controls the remaining unit so as to maintain the output current constant. Specifications 650,015 and 776,550 are referred to.
Patent GB-359934-A (GB)
Title: Improvements in or relating to the fuel injection in oil engines
IPC: F02B3/06
Filed: 1930-07-25
Abstract: 359,934. Oil engines. MOTORENWERKE MANNHEIM AKT.-GES. VORM. BENZ ABT. STATION€RER MOTORENBAU, Mannheim, Germany. July 25, 1930, No. 22541. Convention date, July 25, 1929. [Class 7 (iii).] A fuel nozzle d and a recess b in the piston a are arranged concentrically with respect to each other and eccentric with respect to the piston axis, the whole of the fuel being sprayed into the cavity. If more than one nozzle is employed a corresponding number of communicating recesses is provided in the piston. Specifications 255,860 and 296,118, [both in Class 7 (iii), Internalcombustion engines, Carburetting-apparatus &c. for], are referred to.
Patent GB-291648-A (GB)
Title: Improvements in a presser foot for sewing machines
IPC: D05B29/00
Filed: 1927-08-27
Abstract: 291,648. Armstrong, J. J. V., (Union Special Machine Co.). Aug. 27, 1927. Presser-feet.-A presser-foot for felling has a fold-guiding channel 7 throughout its length, and is provided with spring-pressed pivoted fingers which engage the encha.ined thread loops during chaining off. The foot portion 3 is pivoted at 4 to the shank 1, and the fingers 12, 13, one for each needle, are pivoted on a pin 16 which is carried by the cheeks 5 of the foot 3. The fingers are pressed down yieldingly by springs 17, 18, which are coiled round a pin 19 and are separated by a washer 20. They bear against adjustable screw studs 21, 23, and a stop pin 24 is provided to limit the downward movement of the fingers.
Patent GB-328876-A (GB)
Title: Improvements in or relating to engine cylinders
IPC: F02F1/16
Filed: 1929-07-23
Abstract: 328,876. Sulzer FrÞres Soc. Anon. Dec. 4, 1928, [Convention date]. Cylinders.-The cover 4 of the cylinder of a internal-combustion or other engine is introduced through the interior of the cylinder and is held against a flange 7 on the cylinder, or on the liner 2, by means of a ring 9, which is moved axially by screws 10, and bears against a split ring 8 sprung into a groove in the cover. Alternatively, the rings 8 and 9 may be replaced by segmental rings.
Patent GB-576613-A (GB)
Title: Improvements relating to slack adjusters for vehicle braking apparatus
IPC: F16D65/60
Filed: 1944-11-16
Abstract: 576,613. Brakes. WESTINGHOUSE BRAKE & SIGNAL CO., Ltd. (Bendix-Westinghouse Automotive Air Brake Co.). Nov. 16, 1944, No. 22680. [Class 103 (i)] In a brake-mechanism slack adjuster of the worm and worm-wheel type, the worm is held against inadvertant rotation by an axially slidable member 21 having a squared hole 24 to engage a square extension 17 of the worm shaft, and the edge 23 of the member 21 is splined to engage corresponding splines 20 on the stationary worm-retaining nut 13. When it is necessary to adjust the brake, the member 21 is pulled, against the action of a spring 28, away from the worm to disengage the splines, and is then rotated by a wrench engaging flats 29. The surfaces 31, 32 are chamfered, so that the act of placing the wrench in position, moves the member 21 to disengage the splines. The spring 28 is housed between a shoulder on the member 21 and a collar 18 secured to the end of the worm shaft by a screw 19. The worm wheel 7 is retained in position by side plates 33 having peripheral threads for screwing into the wormcasing. The side plates have central openings 34 forming bearings for hubs on the worm.
Patent GB-490134-A (GB)
Title: An improved splinter-proof curtain or net
IPC: F42D5/05
Filed: 1937-07-06
Abstract: 490,134. Splinter-proof mat. YUILLE, J. July 6, 1937, No. 22695/36. [Class 20 (i)] A device to protect fixed or moving structures from penetration by bullets, splinters, or flying fragments, or against the effects of concussion, is formed as a curtain, comprising a knitted or woven metal mesh envelope 2 and a filling of metal wool ; the opposite sides of the envelope are joined by flexible metal connectors 3. The curtain shown is wider than the depth of the passage 4 in which it is suspended and trails along the bottom of the passage in a direction opposite to the direction from which the concussion may come.
Patent GB-1306288-A (GB)
IPC: H01B3/40
Filed: 1970-05-11
Abstract: 1306288 Aminopropyl-1,3,7-triazabicyclo[3, 4,0]nonenones CIBA-GEIGY AG 11 May 1970 [13 May 1969] 22703/70 Heading C2C [Also in Division C3] Bicyclo amines of the formula in which R 1  and R 2  are each hydrogen or an aliphatic or cycloaliphatic hydrocarbon radical or R 1  and R 2  together form a divalent aliphatic or cycloaliphatic radical, are prepared heating diamines of the formula to eliminate 1 mol of water therefrom. Preferred compounds are those in which R 1  and R 2  are C 1-4  alkyl or tetra- or penta-methylene. The reaction is preferably carried out at temperatures of the order 100-200 C. removing the water from the reaction mixture under reduced pressure. The amines are used as curing agents for epoxy resins (see Division C3). The starting diamines are obtained by catalytic hydrogen of the corresponding di-(#- cyanoethyl)-hydantoins.
Patent GB-149956-A (GB)
Title: Safety device for gas welding plants
IPC: F23D14/82
Filed: 1920-07-30
Abstract: 149,956. Fregonara, C. Aug. 2, 1919, [Convention date]. Blowpipe burners; burners, controlling.- In a gas welding plant in which a gaseous mixture such as oxygen and acetylene is led to the burner through a pipe containing filtering- material, the pipe is in communication with a chamber fitted with a safety valve thereby relieving the force of explosions in the filter pipe. The gaseous mixture pipe 1 in the construction shown in Fig. 1 is provided at its ends with screw plugs 2, 3 and in its interior with a number of rings 7 which are separated by perforated cups or wire gauze disks 8 and contain iron chips or like permeable material. A chamber A fitted with a tension - spring safety valve C communicates through a connexion B with the interior of one of the rings 7, which ring 7 is left empty. The lowest ring 7 is also left empty to form a space 9 allowing the displacement of a plain or spring aluminium or like check valve 5 arranged in the plug 2. The chamber A may surround, or be arranged at the side of, the pipe 1. The tube connecting the filter-pipe to the burner is preferably bent. According to the Specification as open to inspection under Sect. 91 (3) (a) the use of the chamber and the check valve 5 are not essential. Chips only may be used in the filter-pipe except for the disk forming the top of the chamber 9. In another construction, the chips, disks, and rings are dispensed with, the valve 5 forming the only safety device. This subject-matter does not appear in the Specification. as accepted.
Patent GB-476516-A (GB)
Title: Improvements in or relating to rotary fluid pressure machines
IPC: F04C2/00
Filed: 1936-08-19
Abstract: 476,516. Rotary engines. PULSOMETER ENGINEERING CO., Ltd., and WARREN, R. Aug. 19, 1936, No. 22811. [Class 110 (ii)] A rotary engine or pump comprises a web J with two vanes J<1> which extend through a block K, slidable within the rotor B. The web is keyed to the driving, or driven, shaft H, and the rotor is rotated through contact with the block K. The arcuate portion A<2> of the casing bore is an arc struck with centre B<1>, the axis of the rotor. The spaces L may form additional working spaces, and where the invention is applied as an internal-combustion. engine, the spaces L may supply compressed air.
Patent GB-955200-A (GB)
Title: Improvements in or relating to the curing of polymeric materials
IPC: C08K5/14
Filed: 1962-06-14
Abstract: Natural and synthetic rubbers (including rubbery saturated copolymers) are cured by a system which consists of an acidic carbon black an organic peroxide curing agent and a reactant material which is a metal salt of a fatty acid, a metal oxide plus a fatty acid or a metal oxide plus a rosin acid, the organic acid having 10 to 20 carbon atoms and the metal being selected from Group Ia, II and III of the Mendel<\>aeeff Periodic Table and lead.
Patent GB-916233-A (GB)
Title: Improvements relating to chuck devices for machine tools
IPC: B23B31/163
Filed: 1959-07-03
Abstract: 916,233. Control of A.C. motors. ZAVODY PRESNEHO STROJIRENSTVI GOTTWALDOV, NARODNI PODNIK. July 3, 1959 [July 3, 1958], No. 22970/59. Class 38 (3). [Also in Groups XXII and XXXV] A chuck comprises several electric motors 9 in symmetrical arrangement around the machine-tool spindle and driving-pinions 14 engaging a ring-gear 19 which drives pinions 27 mounted on a disc 23 attached to a tube 28 carrying a scroll cam 29 by which the jaws 36 are moved radially in body 30. The ring gear is rotatable in bearings 20, 21 and has tracks with differing numbers of teeth for both sets of pinions. The motors, gearing &c. are mounted on a member 8 rotatable with the body 30, and current is supplied to the motors through brushes 34 and slip-rings 35. To actuate the chuck, a switch 44 is operated to close contacts 44a, 44c, e.g. by a push-button, thus energizing a relay 53 with contacts 53a, 53b and connects the motors to current source 39 to close the chuck jaws on to a workpiece. When the jaws engage the work the current to motors 9 rises, and, through a leakage-reactancetransformer 43 causes relay 49 to be energized to close contacts 49a, 49b and open contact 49c and energize relay 54. This closes contacts 54a, 54d, 54e and opens contacts 54b and 54c, thus applying a higher voltage to the motors for clamping the jaws. No current flows through transformer 43 but relay 49 remains energized during discharge of capacitor 51, the time of which is adjustable by resistor 50. The secondary-voltage of the transformer is adjusted by resistor 47 so that during closing of the jaws under no-load conditions, relay 49 is not energized, the current-impulse being absorbed by the capacitor. A lamp 57 indicates that clamping has been completed. To release a workpiece, contact 44b is closed to cause the motors 9 to reverse. Due to the clamping, the starting-current is at maximum and relay 49 is energized after a fast charging-up of capacitor 50. Thus contact 54a is closed, and contact 54b is opened, to apply the higher voltage. During discharge of the capacitor, relay 49 remains energized and the source 39 is disconnected from the motors. The motor circuit includes a thermal overload device 46.
Patent GB-501646-A (GB)
Title: Improvements in or relating to cellulose nitrate coating compositions
IPC: C09D101/18
Filed: 1937-08-24
Abstract: 501,646. Cellulose nitrate compositions. DU PONT DE NEMOURS & CO., E. I., and ENSMINGER, G. R. Aug. 24, 1937, No. 23233. [Class 2 (ii)] Pigmented coating-compositions with a reduced tendency to " chalking " and " bronzing " are prepared by incorporating together a pigment, cellulose nitrate, a polymerizable product of an amide, amine; imine, aromatic or alicyclic ester and aliphatic ester (wherein the aliphatic radicle contains at least 3 carbon atoms), derivatives of an acid represented by the general formula CH2=CR-COOH, wherein R is H or a methyl radicle, a plasticizer and a solvent or diluent. The polymerized product may be present in proportions ranging from equal parts of cellulose nitrate and polymerized product to half as much polymerized product as cellulose nitrate. The amount of plasticizer may be <1>/5 to ¢ of the amount of cellulose nitrate. Examples of compositions include, in addition to solvents, diluents and plasticizers, (1) lead zinc oxide, isobutyl methacrylate resin and cellulose nitrate, and (2) Chinese blue pigment, zinc oxide, isobutyl methacrylate, and cellulose nitrate. Specifications 428,223 and 499,790 are referred to. Reference has been directed by the Comptroller to Specification 489,725.
Patent GB-1392000-A (GB)
Title: Irrigation emitter unit
IPC: A01G25/00
Filed: 1972-05-17
Abstract: 1392000 Irrigation dripper unit STANDARDS INSTITUTION OF ISRAEL and I GILAAD 17 May 1972 [23 May 1971 30 Jan 1972] 23290/72 Heading A1B In order to achieve a slow rate of water discharge, an irrigation dripper unit comprises two members, one of which includes a groove thereon which groove has bends of 90 or more at predetermined intervals therealong and together with a surface of the second member defines a water conduit having a resistance to water flow. The unit may be connected to a main water supply line or it may be part of the line and the members may be tubular or flat. The inlet to the unit preferably has a diameter or cross section less than the conduit and, where the main water conduit passes through the emitter unit, the inlet may extend circumferentially of the main water conduit or parallel thereto. The conduit in the unit may feed a plurality of outlets. A number of groove configurations are disclosed and in one (Fig. 5) the unit comprises an inner sleeve member 30 formed with ribs on the outer surface and -an outer tubular member 31 and the unit is connected to a supply line via a main inlet and outlet 32, 33. The conduit is defined by the ribs and the inner surface of the tubular member 31 and water leaves it at 36', 36".
Patent GB-517080-A (GB)
Title: Improvements in or relating to elastic fabrics and the like
IPC: D04B1/18
Filed: 1938-08-06
Abstract: 517,080. Bandages &c. LONGDON & CO., Ltd., F., and SKINNER, G. W. Aug. 6, 1938, No. 23308. [Class 81 (ii)] [Also in Groups VIII and VII] The edge of an article made from an elastic fabric woven from or incorporating elastic rubber threads, e.g., knee bandages anklets &c. is enclosed in a ribbonlike strip of rubber 12 disposed in' U- formation over the said edge and enclosed itself by a line of covering stitching, overseaming &c., 13, either passing through the rubber strip or not, and preferably of the three-thread type. Specification 351,294 is referred to.
Patent GB-622664-A (GB)
Title: Improvements in dispersion of carbon black
IPC: C09D7/80
Filed: 1946-08-08
Abstract: Compacted carbon black is dispersed in an organic substance which is liquid at 70 DEG  F., boils substantially above a temperature of 110 DEG  F. and wets carbon black, by grinding the mixture in a ball mill at a temperature of at least 110 DEG  F., but below the boiling point of the organic substance.  Organic substances specified include acetone, ethyl alcohol, benzene, toluene, kerosene and mineral oils generally, and vegetable drying oils. Printing inks employing the usual ink vehicles (which may also contain resinous and asphaltic materials and other ingredients usually employed in inks and paints) may be produced.  In the example, a dispersion is made from a mineral oil, a varnish from a limed wood resin dissolved in a mineral oil, and carbon black pellets.ALSO:A dispersion of carbon black in an organic substance is prepared by grinding the mixture in a ball mill at a temperature of at least 110 DEG F. but below the boiling point of the organic substance.  The balls in the mill may be of flint, porcelain, synthetic resin, cast iron or steel, or iron or steel slugs or bars.
Patent GB-134198-A (GB)
Title: Improvements in Foot-actuated Thread Book Stitching Machines.
IPC: B42B2/02
Filed: 1919-09-24
Abstract: 134,198. Stõubli, Geb. Oct. 21, 1918, [Convention date]. Book-stitching machines.-The operations of a book-stitching machine are produced by the motion of a single treadle 53. The treadle is connected by gear chains 63, 67 to one member of each of two unidirectional clutches 9, 10 and 40, 41; the clutches being operative in opposite directions. The clutch 9, 10 is used to operate the stitch-forming devices, and the other 40, 41 the movements of the table 34 upon which the signatures are placed. The treadle is initially in middle position. A movement to the left of the Figure moves the table into stitching position by means of the clutch 40, 41, crank 43, and rod 44. Subsequent movement to the right does not affect the table, but, by the clutch 9, 10, causes the needles 28 to penetrate the work and return. The movement of the treadle to mid-position again brings the table 34 into the position shown.
Patent GB-1595148-A (GB)
Title: Manufacture of fibres by means of gaseous currents with economy of energy
IPC: C03B37/06
Filed: 1978-05-30
Abstract: The process of manufacture of fibres from a mineral thermoplastic substance employs a main gas stream (27) and a secondary gas jet (29). The section of the secondary jet is smaller than that of the main stream but the kinetic energy per unit volume of the secondary jet is higher than that of the main stream. The secondary jet is directed transversely to the main stream and enters it to create a zone of interaction (Z) which includes turbulent streams. A lace of ductile substance (34) is brought into this zone by the secondary jet. In the interaction zone the streams of gas contain oxidising fuel components introduced from the duct (35) by the nozzle (36) in proportions which result in a combustible mixture. The lace of ductile substance is brought into the zone (Z) at a temperature which is at least equal to the ignition temperature of the mixture. The process is employed especially for making fibres from glass. <IMAGE>
Patent GB-316886-A (GB)
IPC: F16K17/16
Filed: 1929-08-02
Abstract: 316,886. Garelli, A. Aug. 4, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Pressure-relieving devices for fluids. - A pressurenelievimg device comprises a frangible disc 1 held in a member 3 by a tubular screwed member 2. The member 3 is ported and encircled by a fitting 5 5 carrying the inlet pipe 6, whereby the vessel 4 may be charged. The disc may be clamped to the bottom of the vessel by a flanged pipe adapted to carry away the escaping fluid.
Patent GB-805814-A (GB)
Title: Improvements in grain bin stanchions
IPC: B63B25/24
Filed: 1957-07-26
Abstract: 805,814. Grain bin stanchions. ALUMINIUM-WALZWERKE SINGEN G.m.b.H. July 26, 1957 [July 26, 1956], No. 23808/57. Class 113. A corner grain bin stanchion for the partition walls in the holds of cargo vessels is made as a one-piece section of an aluminium alloy with two grooves 1, 2 for the insertion of partition boards and at least one of the walls of each groove presents a rib or flange 3 directed toward the opposite wall of the groove narrowing the opening of the groove.
Patent GB-865181-A (GB)
Title: Improvements in or relating to knitting machines
IPC: D04B9/02
Filed: 1957-06-25
Abstract: 865,181. Knitting-machines. SCOTT & WILLIAMS Inc. June 25, 1957 [July 19, 1956], No. 23849/60. Divided out of 865,178. Class 74 (2). To control the size of stitches being formed in a circular machine, the sinker cam means is controlled, to modify the sinker wave and thereby to change the relationship between sloping sinker ledges and the needles in the drawing of stitches over those ledges, by means responsive to sensing means which is, in turn, responsive to the size of stitches produced. The centre sinker cam is in two overlapping parts 306, 310, of which the part 306 is pivoted at 308 and is connected through a pin 318 to a plate 320 pivoted at 321 and bearing a hook 324 through which and a link 98 and bell-crank 328, the position of part 306 is controlled by pneumatic means, in turn controlled by sensing means including a detector cam which rides on the butts of the sinkers and operates the nozzle baffles of pneumatic means similar to that of Specification 865,178. The point along a sloping sinker ledge 300 at which the loops are drawn is thereby determined. The apparatus is rendered active or inactive by the main drum acting, through a rod 346 and bell-crank 342, on a slide 332 carrying the bell-crank 328. Specifications 753,213, 764,694, 865,179, 865,180 and 865,182 also are referred to.
Patent GB-1478251-A (GB)
Title: Hammer
IPC: B25D9/12
Filed: 1975-06-03
Abstract: 1478251 Hydraulic hammers JOY MFG CO (CANADA) Ltd 3 June 1975 [11 June 1974] 23910/75 Heading B4C A fluid operable hammer comprises a body with a piston 14 therein which is axially movable to form two variable volume chambers in front of and behind the piston, the rearward chamber being pressurized by gas and in constant communication with a coaxially disposed gas accumulator 30, the front chamber being selectively in communication with an hydraulic reservoir 34 which surrounds the gas accumulator 30. The front of piston 14 has a taper on a narrower portion 156 thereof which produces a throttling effect as portion 156 enters chamber 8 until the throttling stops and liquid in chamber 8 is highly pressurized to move forward the bit 12. The hydraulic fluid flow is controlled by a slide valve 57. Frangible washers 74 and frangible sleeve 72 are provided to be crushed if the drill steel is incorrectly operated. A oneway valve 128 and control valve 130 are provided to throttle the gas flow from behind the piston.