baber/WOPTO huggingface dataset:
Patent GB-743710-A (GB)
Title: Improved explosive compositions
Inventor: TAYLOR JAMES
IPC: C06B23/04
Filed: 1952-11-19
Abstract: 743,710. Safety ammonium nitrate explosives. IMPERIAL CHEMICAL INDUSTRIES, Ltd. Oct 7, 1953 [Nov. 19, 1952], No. 29198/52. Class 9(2) In a safety ammonium nitrate explosive comprising trinitrotoluene and sodium chloride wherein NH 4 NO 3  and T.N.T. consist of fine particles in intimate admixture, characterized in that the amount of sodium chloride is at least 35 per cent by weight of the explosive and at least 10 per cent by weight of the explosive of the NaCl is retainable on a 120 B.S.S. sieve. Proportions may be 30-60 per cent NaCl, 5-12 per cent T.N.T. and 65-28 per cent mainly of NH 4 NO 3 . Sodium nitrate and other non-explosive solid, e.g. fibre, may also be included to give a satisfactory oxygen balance, which is between -0.5 and +3 grms./100 grms. The NaCl should be such that not more than 25 per cent will pass a 120 B.S.S. sieve, and should all pass 16 B.S.S. sieve. Reference is made to the explosive having a detonation velocity of 2300-2900 m./sec. and to 17.5 per cent NaCl being retainable on 120 B.S.S. sieve when the explosive contains 40 per cent NaCl. The T.N.T. and NH 4 NO 3  may be ground together and NaCl wholly or partly retainable on 120 B.S.S. mixed in, or some NaCl may be milled with the T.N.T. and NH 4 NO 3  and the portion of NaCl too coarse to pass 120 B.S.S. sieve added later. Alternatively, the T.N.T. and NH 4 NO 3  may be milled with or without some NaCl, NaCl all retained on 120 B.S.S. sieve, preferably on 60 B.S.S. sieve, is added, and milling continued for a short time, so that some NaCl is still too coarse to pass 120 B.S.S. sieve. In an example the NH 4 NO 3  is surface coated with the ammonium salt of trisulphonated pararosaniline.
Patent GB-1323660-A (GB)
Title: Spool valves
IPC: F15B13/01
Filed: 1972-06-23
Abstract: 1323660 Valves CATERPILLAR TRACTOR CO 23 June 1972 [2 Sept 1971] 29962/72 Heading F2V In a spool valve comprising a bore and spaced inlet 14, and outlet 16, 18 ports, means are provided to prevent leakage of fluid to said outlet port when the valve is closed comprising a drain passage 28 communicating with said bore intermediate said inlet and outlet ports for directing the leaked fluid to a low pressure area 28<SP>1</SP>, said drain passage being provided with a check valve 38 which closes the passage when the valve is open and opens the passage when the valve is closed. The check valve comprises a spring loaded ball 32 held against a slidable piston 38 provided with a small orifice 40 through which the leakage fluid escapes. When the valve is opened the fluid pressure in the section 28 depresses the piston and closes the ball against its seat. In the described embodiment two outlet ports are connected respectively to the ends of a hydraulic jack. When one of the outlet ports is in communication with the inlet port the other is in communication with an exhaust port 26 and hence to a tank.
Patent GB-138860-A (GB)
Title: Improvements in releasing and loss preventing means for ship launching cradle-packings
IPC: B63B9/00
Filed: 1919-11-24
Abstract: 138,860. Jansen, H. N. Feb. 12, 1919, [Convention date]. Launching - cradles. - In launching-cradles, the packings on the opposite sides of the vessel are connected by flexible means such as a chain, which is automatically released when the vessel is water-borne. The vessel 2, Fig. 2, is carried on the ways 1 in cradles 4 which consist of baulks 5 braced bv strong-backs 8, and held together by chains 18 passing under the keel of the vessel. The chains 18 are attached to bolts 14, 15 passing through the packings, the bolt 14 being set up by a nut 19, while the bolt 15 is held by means shown in Figs. 3 and 4. The bolt 15 passes through a block 12 and is embraced by a nut 21 consisting of four sections. The sections are held in position by plates 23, 24 connected at one end by a bolt 29, and at the other end engaging right and left handed screw studs 35, 36 on a lever arm 37. The arm 37 has a cam-like projection 39 and a paddle 38. In operation, the bolt 15 is placed in position and the nut 21 clamped on to it, the paddle 38 being in the position shown in Fig. 3, and the chain 18 is tightened by setting up the bolt 14, wedges 47 being also employed if desired. When the vessel enters the water, the pressure on the paddle 38 forces it backwards and loosens the plates 23, 24. At the same time, the projection 39 bears upon the nut 21 and forces these plates off the nut, which falls apart and releases the bolt. The various parts are prevented from floating away by chains or cables 41, 43, 44.
Patent GB-791152-A (GB)
Title: Production of lower halides of titanium, niobium, tantalum, vanadium, tungsten and molybdenum
IPC: C01G23/02
Filed: 1955-10-14
Abstract: Lower halides of titanium, niobium, tantalum, vanadium, tungsten and molybdenum are prepared from the higher halides thereof by bringing the higher halides into contact with the carbide of the same metal in an electric arc.  The description exemplifies the production of titanium trichloride by passing titanium tetrachloride into an arc formed between one electrode consisting of titanium carbide and another electrode which may be the same or which may be carbonaceous. According to an Example a graphite crucible containing granular titanium carbide was connected to one pole of an A.C. generator and the other pole was connected to a tubular graphite electrode through the centre of which a stream of vaporized titanium tetrachloride entrained in argon was fed.  Intense violet fumes of titanium trichloride were observed and could be collected on a cooled glass plate. Specifications 722,901 and 791,151, [Group XXXVI], are referred to.
Patent GB-1434176-A (GB)
Title: Method of preparing cycloolefins
IPC: B01J23/00
Filed: 1974-07-03
Abstract: 1434176 Cycloolefins INST NEFTEKHIMICHE SINTEZA IMENI AV TOPCHIEVA AKAD NAUK SSSR and UNIVERSITET DRUZHBY NARODOV IMENI PATRISA LUMUMBY 3 July 1974 29421/74 Heading C5E A cycloolefin is prepared by selective hydrogenation of the corresponding cyclodiene with H 2  in the presence of a catalyst which is an alloy containing (a) Pd and (b) Ru or Rh. The alloy may contain 1-11 wt. per cent Ru or 1-5 wt. per cent Rh. The hydrogenation may be carried out at 20-240 C. and 1-1À5 atmospheres absolute. The H 2  may be in admixture with an inert gas such as N 2 , He or argon. The catalyst is preferably in the form of a membrane with H 2  diffusing therethrough. Examples describe the preparation of cyclopentene and cyclooctene.
Patent GB-1240732-A (GB)
Title: Improvements in or relating to television receivers
Inventor: JONES JAMES DOUGLAS
IPC: H04N5/59
Filed: 1968-06-20
Abstract: 1,240,732. Cathode-ray tube circuits. PYE Ltd. 14 Aug., 1969 [20 June, 1968], No. 294667/68. Heading H4T. The average long-term beam current of a CRT is used to derive a control signal which is applied to a video or luminance amplifier, an output of which is arranged to alter the AGC characteristic of the system to vary the gain so that the short-term beam current is increased when the average beam current is below a permissible maximum value. As shown, the EHT supply to a shadow mask tube CRT is stabilized by shunt regulator J, the voltage across resistor R1 being inversely proportional to the beam current. This voltage is applied to the base of transistor T2 forming part of the emitter impedance of the first transistor T1 of a video amplifier. When the average beam current is at the maximum permissible value T2 is nearly cut off and exhibits a high impedance and as the average beam current decreases T2 conducts and exhibits a lower impedance, thus shifting the DC level of the amplifier. Capacitor C8 prevents the variation of the AC gain of the amplifier. The signal at the emitter of transistor T3 is applied to an amplifier T4 which is gated by flyback pulses applied to terminal 3. The gated signal is used to generate AGC voltages which are applied to the IF and RF amplifiers from terminals 14 and 15 respectively. The DC level of the gated signal adjusts the delay of the AGC circuit so that a decrease in the average beam current results in an increase in the signal amplification. The increased signal applied to video detector D1 provides a DC component which offsets the shift in DC level produced by the control signal and a picture with increased high-light brightness and contrast range is produced. Resistor R22 in series with the collector of T2 is selected so that when T2 is bottomed the permissible shortterm value of the beam current is not exceeded. If an EHT shunt regulator is not used a control voltage may be derived from a resistor inserted in series with the EHT supply or from the line output valve which provides drive to the EHT supply. If the control signal is derived in this way it is directly proportional to the beam current and is inverted before application to the base of transistor T2. Alternatively, transistor T2 is used to control the base voltage of transistor T3.
Patent GB-693479-A (GB)
Title: Improvements relating to explodable mines
IPC: F42C14/08
Filed: 1951-12-17
Abstract: 693,479. Land mines. SORLINI, R. Dec. 17, 1951, No. 29495/51. Classes 9(i) and 9(ii) The land mine shown in Fig. 1 has a body 1 enclosing an explosive charge 2 and closed by a cap 3 into which is screwed a sleeve 4. Rotatably and slidably mounted in the sleeve is a bush 5 whose movement is limited by a collar 6. Within the bush is a tubular member 10 with slots, the inner end rendering it expandable. A radial aperture in the member 10 contains a ball or balls 12' engaging a striker-pin 13 spring-pressed towards a percussion cap 18. A member 19 holds the cap at the end of a hollow shaft 16 with radial openings 17. The shaft 16 terminates in.a conical portion 15 by which the mine is fixed in the ground. By attaching a wire to a removable arm 20 the bush may be turned from a remote point. Upon withdrawing a safety pin 21, pressure on the bush 5 will rupture a disc 22 and bring an opening 7 into alignment with the ball/or balls 12 to release 'the striker pin. A pull on the bush 5 will also release the striker, by bringing an opening 8 into alignment with the balls 12. Also if the bush is rotated one or other of slots 9, Fig. 3, will be brought into alignment with the balls 12 to release the striker. The mine may also be exploded by surrounding the bush 5 by a cap 24 enclosing the semi-spherical end 26 of a rod 25, Fig. 7. Should the rod be deflected, the bush 5 will be depressed and the mine exploded. The mine may be made at least in part of non-magnetic materials.
Patent GB-813265-A (GB)
Title: Improvements in, or relating to, pneumatic suction devices
IPC: F16B47/00
Filed: 1955-10-17
Abstract: 813,265. Pneumatic suction fasteners. ARBER, J. W. Jan. 17,1957 [Oct. 17,1955], No. 29567/55. Class 44 Relates to pneumatic suction devices of the kind comprising a flexible diaphragm 1 which is caused to adhere to a supporting surface 9 by creating a sealed space 7 between the diaphragm and the surface and maintaining the pressure within the space below atmospheric pressure. According to the invention, the centre of the diaphragm is anchored to one end of a post 2 through an opening in the centre of a cover plate 4 of smaller area than the diaphragm and means 5 is provided on the opposite side of the plate to the diaphragm for displacing the post and diaphragm away from the surface 9 towards or into the plate opening and for urging the plate into contact with the diaphragm. The thickness of the diaphragm, which is made of a synthetic plastic material, is between fifteen and twenty-five thousands of an inch.
Patent GB-1309210-A (GB)
Title: Two-for-one twisting machine with compressed air operated threading  mechanism
IPC: D01H15/007
Filed: 1971-06-24
Abstract: 1309210 Two-for-one twisters PALITEX PROJECT CO GmbH 24 June 1971 [15 July 1970] 29602/71 Heading DID A 2 for 1 twister comprises a compressed air nozzle 13b within the spindle rotor for use during threading up. The nozzle 13b has a suction opening connected to the lower end of the hollow spindle shaft 10 and its outlet leads to a duct 12 in the yarn storage disc. The nozzle 13b is also able to be directed towards a deflection surface 16b which upwardly deflects the horizontal air stream from the nozzle. One compressed air supply duct may be permanently connected with the nozzle 13b by a central bore (Fig. 4 not shown) or by a displaceable duct which is moved simultaneously with a spindle brake, (Fig. 1 not shown) The thread which is blown upwardly by the compressed air stream between the balloon limiter 6 and the protective cage 9, may be caught by a second compressed air nozzle. This second nozzle may be pivotable to a central position and together with shaped guides feeds the thread end to winding on rollers, (Figs. 6 and 7 not shown). In an alternative arrangement, the second nozzle is carried on a pivoted plate which deflects the thread emerging from the balloon limiter towards the centrally positioned second nozzle and then toward guides around the rollers of the winding on device, (Fig. 8 not shown).
Patent GB-340536-A (GB)
Title: Improvements in or relating to advertising and like arrangements comprising luminous discharge tubes
IPC: G09F13/26
Filed: 1929-10-01
Abstract: 340,536. Signs. DICKER, S. G. S., 20, Holborn, London.-(Naamlooze Vennootschap Philips' Gloeilampenfabrieken, 6, Emmasingel, Eindhoven, Holland.) Oct. 1, 1929, No. 29728. [Class 3 (ii).] In signs of the type comprising a plurality of electric discharge tubes shaped as characters, each tube 1 is freely arranged in space and secured to a foot 14 consisting at least partly of insulating material and incorporating a series resistance 23. As shown, the blocks 14 are mounted in a troughlike casing comprising two parts 15, 16 articulated together at 17, electrical connection being made by contacts 21, 22 engaging an insulated bus-bar 19 and the metal casing respectively. The whole casing is preferably mounted by means of plugs 24, 25 on a case 26 containing the transformer ; these plugs also serve to make the electrical connection, so that the casing 15, 16 cannot be opened for access to the character supports until it has been disconnected from the supply. A plug 30 may also be provided on the casing which engages a switch device within the transformer case. The blocks 14 may be mounted in a single channel support instead of the hinged casing, or the blocks may be slotted on their under side to fit over a support in the form of a simple rectangular bar, connection preferably being made by bus-bars as before.
Patent GB-1094762-A (GB)
Title: Damping arrangements for friction clutches
Inventor: SCHULDT KLAUS
IPC: F16F15/123
Filed: 1966-07-02
Abstract: 1,094,762. Resilient couplings. AUTOMOBILWERK EISENACH VEB. July 2, 1966, No. 29790/66. Heading F2U. In a vibration damping coupling for a friction clutch plate of the type comprising friction discs and a series of circumferentially disposed helical springs, at least one of the springs is arranged so that under load it transmits torque before the remaining springs come into action. As shown, a sleeve 15 and friction damping discs 18, 20, 21 loaded by an axial spring 17 are mounted between the clutch plate 1 and hub 3, together with springs of which one, 8, is weaker than the others, 7, and is fully operative, whereas the springs 7 only transmit torque after an angular lost motion 23 between the clutch plate and hub is taken up. The springs 7 are mounted between end retainers 9 normally spaced from the ends of openings 10 in the hub flange, the desired lost motion being provided by lugs 23 carried by friction disc 20 and projecting into recesses in the openings 10.
Patent GB-1112965-A (GB)
Title: Improvements in or relating to cutting presses
IPC: C14B5/00
Filed: 1965-07-14
Abstract: 1,112,965. Cutting-out presses. BRITISH UNITED SHOE MACHINERY CO. Ltd. 14 July, 1965 [14 July, 1964], No. 29791/65. Addition to 981,185. Heading B4B. In a cutting-out press as set forth in Specification 981,185, the manually-operable means for actuating the valve to initiate downward movement of the beam is in the form of a trip device which is rotatable to a selected one of a plurality of alternative positions to select the distance through which the beam moves downwardly before it is arrested. The valve, which is contained in housing 36 located in press column 2, is actuatable by a freely-mounted rod 71 connected at one end to a handle 79 of the trip device and arranged at its other end to engage one arm of a pivotally-mounted lever 51, the other arm of which engages the stem of a spring-influenced valve slide 38, Fig. 2 (not shown), the rod 71 being movable axially to cause the valve to initiate downward movement of the beam and being rotatable about its axis to the selected one of its alternative positions. The rod 71 has fixed thereto an eccentric 74 arranged to engage, on downward movement of the beam, a spring-influenced flange 60 which, on further movement of the beam, disengages the end of the rod 71 from the lever 5L to cause the valve to terminate the cutting operation. and bring about upward movement of the beam. The flange 60 is provided on a sleeve 59 slidably mounted on a control rod 15, the lower end of which is threaded on a screw 18 so that by rotation of a hand wheel 31 secured to the upper end of the rod 15, the rest position of the beam can be adjusted. The heightwise position of the sleeve 59 is adjustable by a screw 63. The handle 79 is formed as a two-armed lever pivoted at 80 between arms 78 extending from a sleeve 75 fixed to the beam.
Patent GB-752056-A (GB)
Title: Extruding tubing from plastic materials
IPC: B29C48/09
Filed: 1954-10-18
Abstract: 752,056. Plastic tubes. OWENS-ILLINOIS GLASS CO. Oct. 18, 1954 [May 11, 1954], No. 29886/54. Class 99(2). [Also in Group V] Concentric tubes, which may be separate as in Fig. 1, or joined to form a laminated tube as in Fig, 7, or separate for part of their lengths, are made by extruding plastic material through a die. The plastic material of one tube may be different from that of the other.
Patent GB-141013-A (GB)
Title: Improvements in and relating to reinforced fibre board material and process of producing same
IPC: D21J1/16
Filed: 1919-12-01
Abstract: 141,013. Munroe, T. B. April 3, 1919, [Convention date]. Reinforced cardboard; fire-proof paper; pulp, adding special substances to; paper, treating with special materials; paper-machines.- In making reinforced fibre board, pulp containing three or four different grades of fibres, comprising for example large fibres or slivers 13, coarse and fine hair-like fibres 14, 15, and ordinary paper pulp fibres, is supplied to the well 30 of a vat 1, producing a head or pressure, and is collected on a foraminous drum 3 and on the undersides of a wirecloth 2 and of the reinforcing- material 5, which may be wire netting or other reinforcing foraminous material. The pulp so collected, and the pulp caught by the several layers as they approach each other, pass out between the drum 3 and roll 9 as a mass which may be cut up and is so porous that the specific gravity of the pulp material thereof is less than four-tenths. The use of large and hairlike fibres ensures more perfect felting as indicated in Fig. 4, preventing the formation of layers, the fine fibres or pulp acting as a filler. The foraminous material 5 may be zigzagged as shown in Fig. 5. The board may be fireproofed and waterproofed or the pulp may be treated in the vat. For fireproofing, substances may be used which, under heat at temperatures of, say, 150 to 500‹ C., break down into constituents, one or more of which will not support combustion. Ferrous oxalate is mentioned, and may be added to the pulp or precipitated therein by using first ferrous sulphate and then oxalic acid. The board may be impregnated with a dope or binder. According to the Specification as open to inspection under Sect. 91 (3) (a), for waterproofing, the pulp, sized with resin size, is treated with aluminium sulphate whereby aluminium resinate is precipitated on the individual fibres. This subject-matter does not appear in the Specification as accepted.
Patent GB-262916-A (GB)
Title: Improvements in or relating to aerial bombs and depth charges
IPC: F42C1/04
Filed: 1925-11-26
Abstract: 262,916. Vickers, Ltd., and Ogden, A. Nov. 26, 1925. Projectile fuzes.-A bomb intended to be dropped from aircraft is provided with means whereby, when the bomb strikes a solid obstacle offering a relatively small resistance, it is prevented from exploding but is thereby armed so that it can explode upon meeting a further obstacle. In the form shown, a nose-piece F covers a direct-impact striker L, and is held in place against a shearing ring m<2> by spring clips f. On impact with a light obstacle, such as the light deck of a vessel, the bomb penetrates the deck with a slight check, which causes the nosepiece F to be dislodged by momentum, leaving the striker L free to act on a subsequent impact. If the bomb strikes a hard target in the first instance, the nose-piece F shears the ring m<2> and operates the striker L at once. The striker L is arranged to force back a firing pin e, while a primer G is simultaneously moved forward by momentum against a detonator D, and forces said detonator towards the firing pin. If the bomb falls in water, it is operated by an hydrostatic fuze similar to that described in Specification 251,751 comprising an air chamber N and two additional ones k, k<1> for depth regulation. Firing takes place when hydrostatic pressure causes the primer G, and the pistol J to approach each other sufficiently for the detonator j to fit into the primer and for the release of the spring striker j<6> of the pistol.
Patent GB-1354144-A (GB)
Title: Rotating electric machines
IPC: H02K21/22
Filed: 1971-06-25
Abstract: 1354144 Dynamo-electric machines MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 25 June 1971 [26 June 1970 (2)] 29935/71 Heading H2A In a rotating electric machine including a rotor having a permanent magnet having p poles and a stator having q salient poles, each salient pole carries a coil and the coils are interconnected to form an m phase winding, where q is a multiple of m and less than p. In general, for a stator having (2n + 1) phases, the ratio of rotor poles to stator poles is (2n + 2)/(2n + 1), and for a stator having 2n phases the corresponding ratio is (n + 1)/n. The motor shown has a rotor 10 carrying a permanent magnet 11 having twenty poles and a stator 12 having fifteen poles, the coils being interconnected to form a 3 phase winding, each phase including five coils space uniformly round the stator periphery. The stator pole shoes are shaped so that the air gap is smallest at the pole centrelines. The motor may operate as a slow speed A.C. synchronous motor or as a D.C. commutatorless motor, in which case a speed dependent signal is derived from the counter e.m.f's induced in the stator windings, Fig. 2 (not shown). The motor is said to have a lower cogging force and hence to run more smoothly than prior art motors.