baber/WOPTO huggingface dataset:
Patent GB-1167449-A (GB)
Title: Improvements relating to Acceleration Sensing Devices
Inventor: CUNNINGHAM ROBERT ASBEL
IPC: G01P15/18
Filed: 1968-01-30
Abstract: 1,167,449. Acceleration sensing device. MARTIN MARIETTA CORP. 30 Jan., 1968, No. 4731/68. Heading H4D. The Specification describes a device comprising a charged particle suspended in threedimensional stable equilibrium by an electrostatic field of such force and direction as to indicate the magnitude and direction of any acceleration forces applied to the particle. The device is particularly suitable for use in a guided missile. Movement of the particle from a position of stable equilibrium is detected photoelectrically whence equilibrium restoring changes are produced in the electrostatic field. The changed particle 23, Fig. 1, is a glass bead, 75Á in diameter, and charged to 5000 volts. X, Y and Z electrodes, 11/13, 12/14 and 15/16 respectively define an evacuated enclosure 10 and are electrostatically charged such that bead 23 remains in the centre of the enclosure. The bead is illuminated by source 22 and the image of the illuminated bead is projected on to photoelectric detectors 25 and 26 by concave mirrors 32 and 33. If the device is subjected to an acceleration a, then the bead of mass m, charge e will experience a force F = ma. This will tend to move the bead and to restore equilibrium an electrostatic field will have to be applied by means of a charge E on the electrodes, such that e E.e=ma or a=E.-. m Detector 25 determines equilibrium deviation of the bead along the X axis and 26 determines deviation along the Y and Z axes. Thus in the equilibrium position the bead image falls at the centres of the detectors, equally illuminating the four elements A, B, C, D of each detector. Elements A and C and elements B and D of detector 25 are connected together, Fig. 6, and fed to respective pre-amps. 41b and 41a. The pre-amp. outputs are fed to a difference amplifier 43 which gives an output indicating the X axis deviation. To convert said output to signals of opposite polarity for application to electrodes 11  and 13 a phase inverter 44 receives said output and delivers said signals via amplifiers 45 and 46. The signals being indicative of E x  can give an indication of ax on meter 48. For detector 26, outputs from elements A and C, and from elements B and D, are combined in amplifiers 52a and 52b, to give Ey signals at 55 and 56 and an a y  indication at 58.  E z  signals and an a z  indication are similarly given by combining the outputs of elements A and B and of elements C and D.
Patent GB-667619-A (GB)
Title: Improvements in or relating to electric circuits
IPC: H03K4/32
Filed: 1950-02-24
Abstract: 667,619. Saw-tooth generating circuits. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Feb. 24, 1950 [Feb. 28, 1949], No. 4810/50. Class 40 (vi). The invention relates to circuits of the type in which a saw-tooth current is generated in an output coil 5 connected to the secondary winding of a transformer, the primary winding of which is connected to a driver valve and in which the voltage across the secondary winding during the forward stroke is rectified by a rectifier 6 and applied to the output circuit of the valve. According to the invention greater efficiency is obtained by maintaining the grid voltage at a steady value between the periodic negative pulses which cut off the valve and initiate the flyback. The desired grid waveform may be obtained from a separate source or may be obtained from the secondary winding through a capacitor 11 and a resistor 12, adjustment of which resistor varies the frequency of operation. The output transformer preferably has a ratio of 1 : 1.
Patent GB-248733-A (GB)
Title: Controlling device for tail planes of aeroplanes
IPC: B64C13/00
Filed: 1926-02-19
Abstract: 248,733. Potez, H. C. A. March 6, 1925, [Convention date]. Planes, construction of; steering and balancing.-The tail plane of an aeroplane is pivoted about a transverse axis and the forward end of a central longitudinal member of its framework has a. sliding connection to a member movable vertically by screw and nut mechanism to vary the angle of incidence of the plane. An axial member 5 and two transverse members 2, 6 are connected by oblique members 3, 4 and the member 2 is pivoted at 15, 16 to the upper surface of the fuselage, and at 8, 9 to the upper ends of struts 11, 12 and 13, 14 connected at their lower ends to the fuselage. The forward end of the member 5 has a sliding connection with a member 17 which is forked and pivoted to a nut 19 on a screwed shaft 20. The shaft 20 is turned by a drum 24 having helical grooves around which two cables are wound in opposite directions and connected to a similar drum controlled by the pilot to enable him to raise or lower the nut 19. The drum 24 is partially enclosed by a casing 21 which is sufficiently close to prevent the cables from leaving the grooves.
Patent GB-1562475-A (GB)
Title: Process of cleaning surfaces of austenitic materials
IPC: B24C1/00
Filed: 1978-02-07
Abstract: For cleaning austenitic material surfaces, in particular by removing ferritic contaminations, a mixture of corundum and liquid is blown on. In order to be able to achieve the cleanliness required above all in the case of core shrouds in reactor construction, an appropriate thickness of material must be removed without covering up cracks or knocking in impurities into the surface. This is achieved in such a way that the corundum/liquid mixture has a corundum content of 40 to 90% by volume, that the gas pressure is between 2.5 and 5.5 atmospheres, that the mean grain size of the corundum fraction having a triangular habitus is between 0.2 and 0.6 mm and that rinsing fluid is applied to the blasted surface before the latter dries out. In this case, 0.8 to 3 kg of corundum particles are required for 100 cm<2>.
Patent GB-489387-A (GB)
Title: Improved goods ejecting mechanism for coin freed vending machines
IPC: G07F11/16
Filed: 1937-02-18
Abstract: 489,387. Coin freed article delivery apparatus. HARPER, P. S. Feb. 18, 1937, No. 4913. [Class 27] Articles 4, Fig. 3, e.g. tickets, stacked in a magazine 3 are delivered by an ejector slide 9 which is moved forward by inserting a coin to push the bottom article from the stack so that it rests with its edges on a support 7 and on the leading edge of the ejector 9. The coin passes through testing mechanism and finally trips mechanism to allow the ejector 9 to be returned to its initial position permitting the ticket to fall down a delivery shoot 8 to a compartment 48 having a delivery aperture 49 and a shield 50 to prevent tampering with the ejector mechanism. The slide 9 is forked to pass on each side of a supporting roller 6 for the stack of tickets, and has abutments 11 to push out the bottom ticket. It slides in guides at the bottom of the magazine and is pivoted at 12 to an arm 13 pivoted to the machine frame at 14 and normally held by a spring 15 with the slide 9 in retracted position. When a coin is being inserted through a slot 30, Fig. 1, it engages the end 29 of a lever 26 pivoted at 27 and rocks this lever against a spring 32, the lever actuating a bell-crank lever 24 which, through a lost motion coupling comprising a slidable rod 23 and nut 36, rocks a shaft 19 through an arm 21 thereon. The shaft 19 has another arm 18, Fig. 3, which moves the ejector lever 13 with its slide 9 against the action of the spring 15 to push out the bottom ticket. The ejector lever and slide are held cocked by a toothed detent lever 39 engaging a knife edge 41 on another arm 37 carried by the shaft 19. The coin, after passing through testing mechanism such as described in Specifications 425,024 and 471,644, drops through a shoot 42 on to the end 43 of a counterbalanced lever 44 which it tilts to raise the detent 39 against the action of a spring 40 and thereby trips the ejector mechanism. The lever 26 also constitutes part of the delay action mechanism of the coin-testing mechanism, such delay action mechanism comprising a toothed sector 33, pawls 34 and pendulum 35.
Patent GB-1526853-A (GB)
Title: Data control apparatus
IPC: G11C19/02
Filed: 1976-02-09
Abstract: 1526853 Magnetic bubble switches INTERNATIONAL BUSINESS MACHINES CORP 9 Feb 1976 [21 April 1975] 04918/76 Heading H3B A data entity is provided with an associated key which is duplicated to form a serial key/key/data packet of which one key is subsequently utilized to allow passage of the data and the other key on a selected path. As described in Fig. 3 a magnetic bubble key is compared with locations determined by traps 38 and loadable switches 39 to cause a valid key/data packet to exit a path 14 to logic circuitry whereas invalid packets exit on path 15 for recombination after the logic circuitry. The bubbles in the switch are annihilated after a switching operation by energizing conductors 33.
Patent GB-124421-A (GB)
Title: Improvements in or relating to Internal Combustion Engines.
Inventor: BARBEZAT ALFRED
IPC: F02C6/12
Filed: 1919-02-27
Abstract: 124,421. Barbezat, A. March 9, 1918, [Convention date]. Four-stroke-cycle engines.-Aircraft &c. engines are charged by compressors actuated by oppositely rotating turbines driven by the exhaust gases from the internal-combustion engines. As shown in Fig. 2, exhaust gases from an internalcombustion engine M actuate a pair of oppositelyrotating turbine wheels H<1>, H<2> connected to compressors B<1>, B<2> respectively, mounted on opposite sides of the wheels H'. H<2>. The turbine blades may be cooled by circulating through them either air or water. To prevent corrosion, the blades are constructed of copper or bronze coated with silver, platinum-irridium, or other material such as cement, or enamel. Coated steel may be used. The Specification as open to inspection under Sect. 91 (3) (a) describes an arrangement in which a turbine wheel and a compressor rotate in the same direction, a reservoir of adjustable capacity being located between the internal-combustion engine and the turbine. This subject-matter does not appear in the Specification as accepted.
Patent GB-538814-A (GB)
Title: Improvements in or relating to phase modulation of high-frequency currents
IPC: H03C3/24
Filed: 1940-03-18
Abstract: 538,814. Wireless signalling; impedance networks. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. March 18, 1940, No. 5041. Convention date, March 18, 1939. [Classes 40 (iii) and 40 (v)] In a phase-modulating arrangement in which a condenser C, Figs. 1 and 3, is in parallel with an inductance L, having half the reactance of the condenser, and an effective variable resistance R of about the same order as the reactance of the inductance, the effective resistance is constituted by an impedance inverting network C1, L1, C1, Fig. 3, terminated by a valve G, the resistance of which is varied by the signal voltage, applied through a transformer T. The impedance inverting network comprises a series inductance L1 and shunt capacities Cl, all having the same reactance value, the inter-electrode capacity of the valve constituting part of one of these capacities. The ratio L1/C1 is equal to the geometric mean between the valve resistance and the effective resistance required. The modulation may be indicated by an oscilloscope, one pair of plates being connected to the output of the transmitter, and the other pair to an unmodulated voltage of the same frequency, magnitude, and phase, or to a relatively low frequency voltage. Specification 369,100 is referred to.
Patent GB-624391-A (GB)
Title: A process for the manufacture of piperido-phenanthrene derivatives and salts thereof
Filed: 1947-02-20
Abstract: Piperido-phenanthrene derivatives of the general formula <FORM:0624391/IV (b)/1> where X, X1, X11 and X111 are hydrogen, alkyl, acylamino, hydroxyl, or functional derivatives of the last-named (one at least of the four being hydrogen) are nitrated and reduced to the corresponding amines; the products may be diazotized and heated to convert the amino-groups into hydroxyl-groups, and the latter may be acylated or alkylated; the aminocompounds may also be acylated; any of the compound may be converted into salts.  The products are stated to have valuable biological properties, akin to those of morphine.  The following processes are illustrated by examples: (1) starting with the unsubstituted compound, there are prepared successively the nitro-, amino- and hydroxy-compounds; the amino-compound is acetylated and from the hydroxy-compound are prepared the acetate and the methyl ether; (2) the acetamino-compound is nitrated, hydrolysed to the nitro-amine, reduced to the diamine and condensed with phenanthraquinone to yield a quinoxaline; (3) from the hydroxy-compound there are produced mono-and di-nitro-compounds, giving on reduction mono- and di-amino hydroxy-compounds respectively; (4) salts are produced from all types of compounds. When the initial material contains an acylamino group, this may be hydrolysed before or after reduction of the nitro group.  The unsubstituted piperido-phenanthrene compounds are obtained by treating N-alkyl-5 : 6 : 7 : 8 - tetrahydro - isoquinolinium halides with benzyl magnesium halide (which may have alkyl substituents in the ring) to give 1-benzyl-2-alkyl-1 : 2 : 5 : 6 : 7 : 8-hexahydro-isoquinolines.  The latter are catalytically hydrogenated to 1-benzyl-2-alkyl-1 : 2 : 3 : 4 : 5 : 6 : 7 : 8-octahydroisoquinolines and ring closure to 11-alkyl-piperido-(21 : 31 : 41, 9 : 14 : 13)-5 : 6 : 7 : 8 : 9 : 10 : 13 : 14)-octahydro-phenanthrenes effected by heating with phosphoric acid. The Provisional Specification refers also to the nitration of amino-compounds, but no details are given.
Patent GB-1408491-A (GB)
Title: Composite turbomachinery blade root configuration
IPC: F01D5/28
Filed: 1973-02-01
Abstract: 1408491 Gas turbine rotor blades UNITED AIRCRAFT CORP 1 Feb 1973 [15 March 1972] 5095/73 Heading FIT A rotor blade for a fan, compressor or gas turbine engine, comprises an aerofoil 12 of longitudinally-arranged fibres which extend into the root 16 and, in order to reinforce parts of the root e.g. tangs 20 and 21, and to retain the fibres continuous within the root envelope, are bent into those parts about radii greater than a minimum acceptable bend radius below which they are over stressed and broken. Some fibres can be bent selectively into more than one part. As shown, the fibres of the leading and trailing edges 26, 28 respectively extend only into the right hand tang 21 of the dovetail root 16, and the fibres in the centre section are divided between the left and right-hand tangs. The fibres may be of boron in an aluminium matrix, and surface fibres on the aerofoil may be inclined with respect to the longitudinal axis to add torsional rigidity. The present invention is also applicable to the double dovetail root configuration of Specification 1408492.
Patent GB-490817-A (GB)
Title: Improvements in or relating to oil testing apparatus
IPC: G01N33/28
Filed: 1937-02-20
Abstract: <PICT:0490817/III/1> In a method of testing oil for the rate of oxygen absorption comprising submitting an oil impregnated test piece and an associated thermometer in a closed chamber to a current of heated air and recording the rise in temperature in the test piece within a given time, the current of heated air is caused to flow around and past the test piece at an even temperature and velocity. The test may be carried out in apparatus comprising a water or air jacketed chamber 2, an air inlet 13, and an air outlet 19 adapted to be heated by steam or heated air from the jacket 3.  Preferably air from the inlet first enters a subsidiary air chamber 12 before passing through an opening 14 into chamber 2, and passes through an opening 16 into a second subsidiary chamber 18 before passing to the outlet.  The test piece 6 may be enclosed in a porous bag 11 and be supported by pendent legs 5 with inturned ends.  To adapt the apparatus for use in differing atmospheric conditions, the outlet tube may be made telescopic or outlet tubes of different sizes be provided for interchangement.  Various parts of the apparatus may be jacketed with heat insulation and the heating be controlled automatically by a thermostat, pressure gauge, or like means.  The air chamber and outlet tube may be electrically heated, if desired.
Patent GB-193274-A (GB)
Title: A new or improved pocket inhalation apparatus
IPC: A61M11/04
Filed: 1922-02-22
Abstract: 193,274. Johnson, G. H. Feb. 22, 1922. Inhalers. - Pocket inhaling apparatus comprises a casing a formed with a compartment a<1> to receive a miniature steel gas bottle or capsule b, the neck of which fits closely into a member a<2> formed with a chamber a<3>. The inlet to the chamber a' is formed with a spigot a<4> adapted to open the valve b<1> when the capsule b is forced upwards by means of the screw plug a<5>. A valve d, operated by a push button d<1>, controls the flow of gas from the. chamber a<3> to a series of expansion chambers c<1> - - c<6>, preferably formed by constrictions c<8> in a single length of tubing c<7>. The chamber c<6> communicates with inhaling means, which preferably consist of a tube e with forked termination e<1> for the nostrils telescopically mounted so that it may be drawn outside the casing through a closable aperture a'. When a volatile medicament is used, in place of gas under pressure, the capsule may be formed of gelatine and the spigot a<4> may be formed as a hollow needle. Two or more capsules, with their associated valves &c., may communicate with the series of expansion chambers.
Patent GB-139220-A (GB)
Title: Improvements in ore stone and like crushers
IPC: B02C1/04
Filed: 1920-02-20
Abstract: 139,220. Kennedy, J. E. March 6, 1914, [Convention date]. Crushers with vibrating jaws.-In crushers for stone, ore, &c. of the kind in which each jaw has one or more doublefaced wear-plates which are also reversible from bottom to top, the wearplates w have tongue- and-groove connexions with cap-plates e<2>, a<2> at the top, and with seats e<3>, a<3> at the bottom of the jaws. The cap-plates e<2>, a<2> serve to protect the upper edges of the wear-plates, and the plate e<2> forms a continuation of the jaw head e<6>. Where a number of wear-plates are used on each jaw, these are connected together by spline tongues h. The swinging jaw c<1> may be secured to its shaft e by keys k which are caused to grip the shaft by bolts k<2>. The jaw e<1> is operated by an eccentric c<3> through a connecting-rod d and toggle-members t, t<1> so as to effect the crushing on the down stroke of the pitman as heretofore. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the arrangement of the jaws at the same inclination to the vertical when the movable jaw is in its mean position. The shaft c and eccentric c<3> are lubricated by means of tubular gravity-feed lubricators l mounted on the bearing-caps. To prevent damage to the machine under excessive strain, the rear toggle-member t<1> is weakened by means such as a central passage t<2>. The toggle-seats f are reversible and interchangeable, and are seated in recesses in the movable jaw and pitman and on a bracket a<6> on the rear frame-member a<2>. The distance apart of the jaws can be varied by means of removable plates i interposed between the frame-member a<2> and the toggle-seat f. Spring tension-rods m connected to the swinging- jaw maintain the seating of the toggles. The side-members a of the frame are supported against lateral strain by reinforcing-stays s, preferably consisting of bolts passing through spacing-tubes. This subject-matter does not appear in the Specification as accepted.
Patent GB-372837-A (GB)
Title: Manufacture of magnetic dust cores
IPC: H01F1/24
Filed: 1931-02-19
Abstract: In making magnetic cores by annealing powdered metal and compressing it the metal, before annealing, is mixed with from 0,5 to 1 per cent of heavy oil to prevent sintering.  Examples are given in which the annealing takes place at temperatures of from 1300 to 1625 DEG  F. for a period of one and a half hours.  The metal may be a nickel iron alloy containing 81 per cent of nickel.
Patent GB-131027-A (GB)
Title: Improvements relating to Parachutes.
Inventor: CALTHROP EVERARD RICHARD
IPC: B64D17/52
Filed: 1918-03-26
Abstract: 131,027. Calthrop, E. R. March 26, 1918. Parachutes.-Relates to arrangements of parachutes, particularly such as are described in Specification 118,859, on aircraft to facilitate descent therefrom. The parachute is housed in a two-part casing A which is supported on the top of the fuselage or on one side. Fig. 1 shows the supporting-arrangement on the top, in which the front end is secured by a universal joint 21 to an arm 22 pivoted inside the fuselage and capable of swinging transversely so as to allow the aeronaut to descend from either side. The supporting-rope 25 rests in a pivoted crutcla 28 which is guided to one side or the other by the arm 22, but maintained in its mid-pasition by a spring stop. The supporting-rope 25 is bifurcated at 27, the ends being attached to the main bolt 8. The bolt 8 is secured to the part 2 of the casing, and is supported by a number of wires 20 attached to a pivoted arcuate frame 19. The wires 20 are broken or cut in the action of release. Fig. 3 shows the internal arrangements. The parachute 6 is housed in the part 1 of the casing and the tapes 9, such as are described in Specification 21312/14, are housed in part 2, the two parts 1, 2 of the casing being held together by a central longitudinal wire 15 which is easily broken. The Inter-engaging edges of the casing are provided with weather housing, and the tapes are connected to the parachute, not only by the main attachments, but by breakable connexions of various lengths, so that the tension is not thrown on to all the tapes at once. When the casing is at the side of the fuselage, a guide-bracket and elastic spring are provided for returning the part 1 of the casing to its normal position after the parachute has been released, the mouth of the parachute being arranged, as described in Specification 118,859, to be positively expanded by spring members.
Patent GB-569558-A (GB)
Title: Improvements in and relating to firing and safety devices for self-loading firearms
IPC: F41A17/58
Filed: 1943-04-01
Abstract: 569,558. Automatic smallarms. AKTIEBOLAGET J. C. LJUNGMAN. April 1, 1943, No. 5262. Convention date, March 9, 1942. [Class 119] The trigger 4 operates the sear 5 by means of a hinged trigger-bar 6 which is thrust upwardly by a spring 11. When the breechblock 2 is in any but the fully-closed position, it depresses a hinged arm 17 against the thrust of a spring 21 and causes the rear end of this arm (a) to depress-the-bar 6 so as to disconnect it from the sear and (b) to oppose a atop 23 to the forward motion of the bar, thus preventing a second pull of the trigger. The Specification as open to inspection under Sect. 91 comprises also a modification in which the pivoted arm 17 merely bears upon the bar 6 and is depressed by a vertical plunger operated by the breech-block. In this case function (b) above is absent. This subject-matter does not appear in the Specification as accepted.
Patent GB-429992-A (GB)
Title: Improvements in and relating to piezo-electric crystal devices
IPC: H03H9/05
Filed: 1935-02-19
Abstract: 429,992. Mounting piezo - electric crystals. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. Feb. 19, 1935, No. 5347. Convention date, Feb. 23, 1934. [Class 40 (v)] In order to maintain the frequency constant, particularly when used on aircraft, a piezo-electric crystal oscillator 9 is prevented from slipping sideways in its mounting by a pin 10 which is secured to the lower electrode 2 and enters a small hole 9 formed at a nodal point in the crystal. The upper electrode 3 is screw-mounted in the cell 1 so that it can be rotated to adjust the air-gap separating it from the crystal.