baber/WOPTO huggingface dataset:
Patent GB-703254-A (GB)
Title: Improvements in or relating to electric frequency modulators
Inventor: EARP CHARLES WILLIAM
IPC: H03C3/14
Filed: 1950-07-31
Abstract: 703,254. Frequency modulation. STANDARD TELEPHONES & CABLES, Ltd. July 31, 1950, No. 19049/50. Class 40 (5) The resonance frequency of a push-pull oscillatory circuit is modulated by applying the modulating signal in push-pull to the grids of two reactance valves, which have their anodes connected at opposite terminals of the oscillatory circuit, and their grids excited in parallel and in phase quadrature with the oscillatory circuit voltage. The signal is broken up into a series of amplitude-modulated pulses. As shown, the circuit 3, 10 is maintained in oscillation by reciprocal connections to the anodes and grids of a pair of valves 1, 2 the mid-point of the coil 3 being earthed by a condenser 6. The pentode reactance valves 18, 19 have their anodes connected to the respective oscillator anodes, and their inner grids excited in parallel from the coil 3 by a secondary coil 14 operative through a quadrature phasing-network 22. The valves 18, 19 thus operate as reactances of opposite sign across the two halves of the circuit 3, 10. Their suppressor grids may be connected to the opposite ends of a push-pull transformer secondary, whose primary coil is fed with the modulating voltage. The circuit is designed for the pulse communication system described in Specification 703,247, the modulating signal being converted to two series of simultaneous positive pulses whose amplitudes vary in opposite senses about a mean value in the rhythm of the modulating signal. These pulses are applied to the suppressor grids through condensers 30, 31 and across resistors 34, 35, and diodes 32, 33. The latter prevent the grids from asuming a negative voltage, and preserve the D.C. component of the pulse voltage. The cathodes of the valves 18, 19 are adjustably and individually biased by resistors 36, 37 and are jointly biased by a variable resistor 20, which is set so that the valve currents are cut off when, during the intervals between pulses, the suppressor grids are at earth potential. An A.F.C. circuit 12 may be fed from the coil 14 and may control a condenser 11 connected across the main tuning-condenser 10.
Patent GB-356841-A (GB)
Title: Improvements in stamping presses
IPC: B21D43/05
Filed: 1930-06-23
Abstract: 356,841. Stamping. GILLERN, (geb. POLTE), KATHERINA, FREIFRAU V., GILLERN, ARNULF, FREIHERR V., NATHUSIUS, (geb. POLTE), M., and NATHUSIUS, M., (trading as POLTE, [Firm of]), Poltestrasse, Magdeburg, Germany. June 23, 1930, No. 19072. Convention date, July 1, 1929. [Class 83 (iv).] A press for stamping cartridge-loading strips or other articles by a number of operations have the places, where these operations are performed, arranged in parallel rows, 1, 2, 3, Fig. 2, and automatic blank feeding means. The means for transferring the blanks from one row to the next may take the form of an intermittently-rotated drum c, Figs. 3 and 4, with holes d into which the blanks are pushed at position A one by one and from which they are pushed at position B by a rod g which enters the enlargements f. The blanks are retained in the holes d, while being transferred and turned over, by a spiral spring h. The blanks are fed along the rows by a spring-pressed pawl o, Fig. 5, on a slide p reciprocated by a bell crank l which is moved in one direction by a spring m and in the other by a stop n on a bell crank i oscillated by a cam k. If the slide p is obstructed so that it does not make a full stroke to the left, the upper arm il exposes a spring-pressed pin w, carried bv the upper arm l<1>, so that it projects and is engaged by the side of the arm i<1> when it returns and the lever l is moved beyond its normal position so that an adjustable screw q engages trigger mechanism r, s to release the clutch-operating treadle u thus stopping the machine. In modifications additional working positions b may be arranged between, behind, or, as shown in Fig. 2, in front of the rows of positions a.
Patent GB-1079186-A (GB)
Title: Improvements in gas turbine engines
Inventor: BUCHANAN DENNIS PETER
IPC: F02K1/82
Filed: 1965-05-06
Abstract: 1,079,186. Gas turbine engine combustion equipment and jet pipes. ROLLS-ROYCE Ltd. April 29, 1966 [May 6, 1965], No. 19092/65. Headings F1J and F1L. In a combustion chamber or jet pipe for a gas turbine power plant in which means are provided for maintaining two overlapping tubular wall sections of the combustion chamber or jet pipe in radially spaced apart relationship, the means comprises a plurality of circumferentially spaced apart members, the members being of  aerofoil section. In a first embodiment the invention is shown applied to combustion equipment of a gas turbine engine comprising tubular wall members 4, 5 disposed in radially spaced apart, axially overlapping assembly by means of aerofoil section members 6 secured to the wall members by welding. The members 6 may be formed from a strip of metal, a portion 6a Fig. 3 of metal being retained so that the members 6 are disposed at the correct spacing during assembly. The portion 6a may or may not be removed subsequently, In Fig. 7 (not shown) the spacers 6 are made as individual pieces stamped or pressed from sheet metal.
Patent GB-184974-A (GB)
Title: Improvements in change speed gear operating mechanism for use on motor vehicles and the like
IPC: G05G9/10
Filed: 1921-07-16
Abstract: 184,974. Armstrong Siddeley Motors, Ltd., and Smith, F. R. July 16, 1921. Controlling - apparatus, arrangements of hand and transmission gear in conjunction with.-The change-speed gear is supported on the frame by a ball joint through which the selector rods pass and engage the speed lever or a lever operated thereby close to the ball. The gear-box A is mounted at the front of the torque tube and is provided with an arm L with a spherical head K mounted in a bracket N on the frame J. The selector rods E, F pass through the ball K and are operated by the lever Q working in a gate O mounted on the bracket N, the lever Q engaging the jaws E<2> of the selector rods as close as possible to the ball K. By these means disturbance of the gear operating members by movement of the gear-box is minimized.
Patent GB-200365-A (GB)
Title: Improvements in or connected with change boxes for looms for weaving
IPC: D03D43/00
Filed: 1922-07-13
Abstract: 200,365. Isherwood, A., and Isherwood, W. July 13, 1922. Change-box motions. -The change box is made from a series of V-shaped interchangeable castings or sections C, Fig. 1, assembled around a central part P provided with end plates P<1>, P<2>, Fig. 2, two such sections forming a shuttle chamber &c. A, Figs. 1 and 2. The sections are each formed with overhanging flanges C<2> and with strengthening ribs &c. C', C<4>. Each chamber is, provided with a swell S comprising a casting fitting through an opening C<5> and with a bent part passing around a knife edge or bearing S<3> formed by cutting an aperture through the rib &c. C'. The swell fulcrums about the part S' and is controlled by a spring fixed to the section or to the swell, which is prevented from projecting too far by a stop on the swell or a lug on the section. The swell is provided with, a nose S', which may be guarded by a part S<8> and cooperates with the usual stop rod. The ends of the sections may be formed with projecting ribs sloping on their upper edges, these ribs being received in a circular rail on the end piece P', which is notched out to receive the lower parts of the sections C. The end plate P<2> is provided with apertures aligned with the chambers A. The sections may be made of metal, preferably aluminium, or of alloys of aluminium, or of wood. The swell may be adjusted for say a smaller shuttle by mounting a bearing S<7> over the original fulcrum S<3>.
Patent GB-696792-A (GB)
Title: Process and device for drying materials by means of ventilation
IPC: F26B21/02
Filed: 1951-08-15
Abstract: 696,792. Drying process and apparatus. FAGIOLI E., and ERCOLE MARELLI & CIA, SOC. PER AZIONI. Aug. 15,'1951 [Aug. 18, 1950 ; May 14, 1951], No. 19299/51. Class 34 (ii) In a process for drying materials 31 housed in a chamber 24 a stream of air is directed on the material from a fixed point within the chamber and the stream rotates about the point at a speed less than one revolution per minute, fresh air being introduced and an equal quantity of moist air exhausted from the chamber. A casing 14 of spiral like configuration and mounted for rotation about the shaft 12 of an electric motor 11, which shaft carries a fan 13, has a vertical delivery slot adjustable in width by means of a flap 15 pivoted at 16 and is rotated by transmission from the shaft 12 through a roll 20 which engages the periphery of a ring 19 fitted to the base of the casing 14. Above the casing an annular body 7 carries a vertical conduit 23 into which is directed hot air from a branch 26 of a conduit 25 the air flow being controlled by dampers 27. Moist air is discharged through openings 28 having doors 29.
Patent GB-354493-A (GB)
Title: Improvements in and relating to sand blasting machines
IPC: B24C3/28
Filed: 1930-06-25
Abstract: 354,493. Sand-blast; rumbles and tumbling-barrels. WILSON, F. W. and TILGHMAN'S PATENT SAND BLAST CO., Ltd., Atlantic Works, Broadheath, near Manchester. June 25, 1930, No. 19336. [Class 60.] A sand-blasting machine, wherein the articles to be treated are contained in a tumbling-barrel comprises a casing a in which is carried, by spindles c, a frame b adapted to receive an open-topped barrel f of any desired form. The sand blast nozzle g is located over the barrel, which, during operation, is oscillated by crank gearing h .. k ; the spindle bearings also may be oscillated up and down in a direction at right-angles to the oscillation about the spindles c. In a modification, Fig. 4, the casing a is carried by spindles m at right-angles to the spindles c and is oscillated by crank gearing o, p, q, driven from the shaft which drives the crank disc k. A clutch t is provided'to allow of discontinuation of the oscillation of the casing, and feed and delivery doors q<1>, r are provided in the casing a; a hand-wheel u serves for bringing the casing to any desired position. The sand blast nozzles may be secured to the barrel, or to the casing, and may be moved by independent mechanism. According to the Provisional Specification the barrel may have a cover, it may be oscillated by rack and pinion mechanism, and the supporting spindles may be adjustable to vary the axis of oscillation. The barrel also may be tilted to facilitate travel of the articles therethrough.
Patent GB-358044-A (GB)
Title: Improved damping means for a sound reproducing diaphragm
IPC: H04R7/26
Filed: 1930-06-25
Abstract: 358,044. Diaphragms. PODSZUS, E., 33, Sch÷neicherstrasse, Friedrichshagen, Berlin. June 25, 1930, No. 19338. Convention date, June 26, 1929. [Class 40 (iv).] A diaphragm b is damped by springs h or like members of high elasticity (e.g. tungsten, steel) which are in contact with the diaphragm at the loops of the overtones of the natural vibrations. The damping may be selected to take up the increase in amplitude due to the resonance of the diaphragm by selecting the thickness of the wire, the diameter of the springs h, and the area of contact. The position of the loops of the overtones may be found by sprinkling sand on the vibrating diaphragm, the sand collecting at the nodes and leaving the loops clear. The springs h may be also placed in other positions and when used on both sides of the diaphragm, may serve as the diaphragm supports. The damping springs are preferably not placed at the positions of greatest amplitude, e.g. the centre portion of the diaphragm, but in the zones dividing the radius in medial section. The springs may be made of wire bands or strips not more than 1/100 mm. thickness, wound in coils of diameter a small fraction of a centimetre, and, where not supporting the diaphragm, are mounted on the supporting members a, c, placed a millimetre or so distant from the diaphragm. They may be in loose contact or glued to the diaphragm. The damping-effect may be increased if some of the springs are in friction contact with each other.
Patent GB-135579-A (GB)
Title: Improvements in and relating to Casting in Portland Cement and like Materials.
Inventor: GRANT JOHN CAMERON
IPC: B28B7/06
Filed: 1918-11-25
Abstract: 135,579. Grant, J. C. Nov. 25, 1918. Casting knobs and handles; moulds.-Small articles such as door-knobs, beer-engine handles, &c. are cast in Portland cement &c. in a mould constructed of thin metal partially split at 4, 5 and divided in two portions 1, 2. The incisions 4, 5 are closed in the casting process by enclosing the mould in a casing 6, 7 which, when removed, allows the metal to spring and release the moulded article which can thus be removed without handling and before hardening is complete. The meeting edges of the halves 1, 2 are bevelled or cut away so as to overlap slightly. A core, metal ferrule, &c. may be placed within the mould.
Patent GB-615355-A (GB)
Title: Transmission line bridge circuits
IPC: H01P5/12
Filed: 1946-06-28
Abstract: 615,355. Impedance matching. STANDARD TELEPHONES & CABLES, Ltd. June 28, 1946, No. 19415. Convention date, July 7, 1945. [Class 40 (viii)] In a system for intercoupling one or more sources such as 10, Fig. 1, to one or more loads 11, 12 comprising a bridge network 1 ... 4 of transmission lines, one of which contains a transposition, the sources comprise a wide band of frequencies and improved matching over the whole range is effected by giving the transmission lines an electrical length of 90 degrees at the mid-band frequency. The characteristic impedances of the transmission lines are so related to that of the load lines 7, 8 and the feeder line 6 as to produce perfect matching at two frequencies equally spaced on either side of the mid-band frequency. Further improvement may be effected by interposing impedance transforming sections 13 ... 16, Fig. 2, between the sources or loads and the bridge, the sections having a length equal to that of the arms 1 ... 4. Then by making the characteristic impedance of the feed lines 6 ... 9 greater than that of the sections 13 ... 16, deviation from the mid-band frequency causes a reactive component to be introduced by the bridge arm 3 which is partly neutralized by the reactive component of opposite sign introduced by the combination of lines 7, 14. By suitably relating the above characteristic impedances to that of the bridge arms, substantial matching may be obtained at three different frequencies. Specification 491,359 is referred to.
Patent GB-643310-A (GB)
Title: Improvements in or relating to cattle yokes
IPC: B68B3/02
Filed: 1948-07-20
Abstract: 643,310. Cattle yokes. METAL AGENCIES CO., Ltd., and ERBY, J. July 20, 1948, No. 19456. [Class 20(i)] A cattle yoke comprises tubular members 2, 3, Fig. 1, hinged at 4, the free end of the movable member 3 comprising a spigot 6 in the form of a latch having an inclined surface 7 formed with a recess 8, whilst the free end of the fixed member 2 is provided with a socket 9 having side walls formed with vertical slots 10, Fig. 3, in which moves a cross bar 11 provided with end discs 12. On inserting the spigot 6 in the socket 9, the bar 11 rides on the inclined surface 7 and then drops into the recess 8 to lock the members 2, 3 together.
Patent GB-311589-A (GB)
Title: Improvements in or relating to aerial vessels
IPC: B64C29/00
Filed: 1928-07-05
Abstract: 311,589. Bowie, J. July 5, 1928. Helicopters ; coupling in pairs ; propelling.- Two or more helicopters of the kind described in Specification 239,323 are connected together side by side with spaces between them in which are placed propellers for forward and upward movement. These propellers comprise tapered scoops E mounted in an inclined position and having propellers at their ends similar to the propellers H having two convolutions as described in Specification 239,323. The spaces between the hulls may have structures for the accommodation of the crew, passengers, machinery &c.
Patent GB-823401-A (GB)
Title: A furnace for the combustion of pulverised fuel
IPC: F23C5/32
Filed: 1956-06-25
Abstract: 823,401. Furnaces. PRVNI BRNESKA STROJIRNA, ZAVODY KLEMENTA GOTTWALDA, NARODNI PODNIK. June 25, 1956 [June 24, 1955], No. 19536/56. Class 51 (1). A pulverized fuel furnace 7 has pivoted burners 1, 3 in the corners supplying a mixture of primary air and fuel dust to the furnace and pivoted nozzles 5, 6 for the admission of tertiary air. Secondary air is admitted through nozzles 2, 4 coaxial with the burners. The burners and the nozzles are adjustable at will and mutually independently both in the vertical and horizontal directions.
Patent GB-1263921-A (GB)
Title: Gear pumps
Inventor: WARNE EUGENE HAROLD
IPC: F04C2/08
Filed: 1968-04-25
Abstract: 1,263,921. Gear pumps. JOSEPH LUCAS (INDUSTRIES) Ltd. May 22, 1969 [April 25, 1968], No. 19593/68. Heading F1F. In a gear pump having a pair of intermeshing spur gears of involute form rotatably mounted in a casing, the trailing face of each tooth of both gears is relieved in a region 12, disposed symmetrically about the intersection 13 of the pitch circle and the face and which region terminates short of the lateral ends of the face. When the milling of the region is performed by a circular cutter which rotates about an axis perpendicular to the region, it has a flat base as shown. When the milling is performed by a drum-shaped cutter which rotates about an axis extending parellel to the region, its base is concave. Pockets between adjacent pairs of meshing teeth communicate through a gap defined between the relieved regions such that the pressure in the pocket which is reducing in volume is relieved to the adjacent pocket which is increasing in volume to equalize the pressure between the two pockets.
Patent GB-1220121-A (GB)
Title: Method and means for removing phosphorus from iron ore
IPC: C22B1/14
Filed: 1968-04-25
Abstract: 1,220,121. Removing phosphorus from iron ore. FORACO Y PROYECTOS S.A. 25 April, 1968, No. 19627/68. Heading C1A. Phosphorus is removed from iron ore by crushing the one to a particle size less than 0À15 mm., subjecting the crushed ore to magnetic or gravimetric concentration, removing or reducing the moisture contained in the concentrated ore, treating the concentrated ore with an aqueous solution of a strong mineral acid (e.g. H 2 SO 4 ), stirring the resultant pulp of the ore and solution, causing the solid content to settle, separating the solid from the liquid and washing the solid with water. Calcium phosphates are precipitated concentrating a solution obtained by mixing the separated and washing liquids with a basic solution. Iron carbonate containing ores may be roasted, prior to the concentration, to produce a magnetic iron compound containing ore. Ores containing magnetic iron compounds may be separated in the final stage by a magnetic washing drum. Ores containing non magnetic compounds are subjected to counter-current washing or differential settling in heavy liquids.
Patent GB-643231-A (GB)
Title: Feed-off-the-arm sewing machine
IPC: D05B15/02
Filed: 1948-07-23
Abstract: 643,231. Hinges. SINGER MANUFACTURING CO. July 23, 1948, No. 19728. Convention date, March 19. [Class 65(ii)] [Also in Group VII] A feed-bar 104 of a sewing-machine (see Group VII) having longitudinal sliding and vertical oscillation in a hollow arm 26 is recessed on its under side to slide on a block 105, Fig. 10, bearing on a pin 106 and is prevented from lifting by a bridgepiece 108 and a similar bearing block. The pin 106 has eccentric ends resting in holes in the sides of the arm 26, and can be rotated to adjust the bar 106 vertically, being locked by a screw 111. A looper-carrying bar (see Group VII), having longitudinal sliding and horizontal oscillation in the arm 26, fits slidably between two members 133, Fig. 11, having part-cylindrical outer surfaces bearing in complementary recesses in the walls of the arm 26 and held in place by blocks 136.
Patent GB-130252-A (GB)
Title: An Improved Grip for Handling Slabs, Bars, Billets or other Material.
Inventor: JONES ARTHUR WAKEFIELD
IPC: B21J13/08
Filed: 1918-11-30
Abstract: 130,252. Jones, A. W., Bryden, J., and Mowbray, A. J. H. Nov. 30, 1918. Lifting-dogs and the like.-A grip for handling slabs, bars, billets, plates, piles, &c. comprises two differentially movable jaws 1, 2 so arranged that the pressure of the load on the jaw 1 forces the jaw 2 down into clamping position. The jaw 2, 3 is connected by a pivot 6 to the jaw 1 which is pivotally mounted in the jib 5. A link 7 which can be adjusted in length connects the arm 3 of the jaw 2 to the jib 5. A spring 12 which acts on an extension 1<1> of the jaw 1, or a weight, maintains the jaws in inoperative position when no load is present. Specification 123,205, [Class 78 (iii), Lifts &c.], is referred to.
Patent GB-844402-A (GB)
Title: Improvements in or relating to the preparation of organic phosphorus compounds
Inventor: PIANKA MAX
IPC: C07F9/165
Filed: 1957-06-24
Abstract: Compounds of the general formula:  <FORM:0844402/IV(b)/1> in which R and R1 are C1-C4 alkyl groups which may be the same or different, R2 is hydrogen or an alkyl, aralkyl, or aryl group, and R3 is an alkyl, aralkyl, or aryl group are obtained by reacting an amine of the general formula:  <FORM:0844402/IV(b)/2> wherein R2 and R3 are as defined above with a halogeno acid halide of the formula XCH2CO.Y where X and Y are halogen atoms, preferably both chlorine atoms, in water to form a watersoluble intermediate of the general formula: X.CH2CO.N(R)2(R3),X, R2 and R3 being as defined above, and then, without isolation reacting this intermediate in aqueous solution with a phosphorodithioic acid ester salt of the formula (RO)(R1O)P(S)SM wherein M is a monovalent metal atom and R and R1 are as defined above. The temperature in the first step of the process should not, in general, exceed 20 DEG C. and on completion of the reaction with the amine any precipitated solid may be re-dissolved by addition of further quantities of water, the compound of the formula (RO)(R1O)P(S)SM added and the mixture allowed to stand, if desired with stirring, at room temperature or heated to complete the reaction.  The compound of the last given formula can be added as a ready made metal salt or a compound in which M is hydrogen can be used and the appropriate quantity of alkali added to form the salt in situ.  Examples are given for the production of products in which R and R1 are ethyl, R2 is hydrogen and R3 is isopropyl and methyl respectively and in which R and R1 are methyl, R2 is hydrogen and R3 is methyl.  Specificatio 791,824 is referred to.