baber/WOPTO huggingface dataset:
Patent GB-137876-A (GB)
Title: Improvements in or relating to electric valve amplifiers
IPC: H03F3/02
Filed: 1918-11-13
Abstract: 137,876. Partridge, G. F., and Smith, B. S. Nov. 13, 1918. Thermionic relays.-In a thermionic valve amplifier for electric currents of audible frequency, the valves are arranged in cascade with the plate of the first valve A, Fig. 1, connected through a condenser H to the grid of the second valve A<1>, the other valves being similarly connected up. The plate of each valve is connected through a high resistance B, B', B<2> with the positive end of the high tension battery D, the value of this resistance being made equal to the effective resistance of the valve. The grid of each valve is connected to the negative end of the filament by a high resistance leak E, E'. The amplified current in the plate circuit of the last valve may pass to a telephone M through the condenser H<2>. When using more than three valves in cascade, a modification shown in Fig. 2 is introduced at the grid of the third valve if four or five are being used, or at the fourth valve if six are being used. It consists of a variable condenser N placed in parallel with the leak E<2>, the value of which resistance is much less than in the previous connexions. The presence of this condenser prevents " howling." The amplifier is suitable for hydrophones, wireless and line telephony, and like purposes. Reference has been directed by the Comptroller to Specifications 127,013 and 127,014.
Patent GB-1388292-A (GB)
Title: Removal of hydrogen from chlorine
IPC: C01B7/07
Filed: 1972-04-21
Abstract: 1388292 Removal of hydrogen from chlorine IMPERIAL CHEMICAL INDUSTRIES Ltd 30 March 1973 [21 April 1972] 18628/72 Heading C1A The invention comprises a process for the catalytic removal of hydrogen from a gas containing hydrogen and chlorine which comprises treating the gas with active carbon granules in a reaction zone maintained at a temperature from 125‹ to 250‹ C., part of the heat liberated in the treatment being used to heat gas to be treated and part of the heating being effected by means of a heat transfer fluid, the process having one or more of the following features: (i) the gas is treated under superatmospheric pressure, (ii) a control mechanism is provided for controlling the rate of flow and/or temperature of the heat transfer fluid, (iii) the flow of the heat-transfer fluid is generally co-current to the direction of flow of the gas, (iv) the flow of the heat-transfer fluid is additionally cross-current to the direction of flow of the gas, (v) the treatment is carried out in one or more elongated reaction vessels containing active carbon granules, the or each vessel being at least partially surrounded by a larger vessel through which the heat-transfer fluid is passed. The heat-transfer fluid is preferably a gas, e.g. air or nitrogen, and the gas treated may be electrolytic chlorine.
Patent GB-1473386-A (GB)
Title: Apparatus for heating fluids
IPC: F23C3/00
Filed: 1974-04-29
Abstract: 1473386 Fluid heaters; water heaters; burners; revaporizing gases JOHN THURLEY Ltd 29 April 1974 18629/74 Headings F4A F4K F4P F4S and F4T A fluid (in particular a liquefied gas to be revaporized) is heated in a heat exchanger 5 which is immersed in a heat transfer liquid (e.g. water) through which combustion gases from a burner 4 pass upwardly in contact with the liquid, the burner 4 having the following features (a) a fuel inlet 21 and/or 23, (b) an upper tangential air inlet 11, (c) a lower combustion chamber 15 with a combustion products outlet 17, (d) a frusto-conical duct 19 extending downwardly to the chamber 15, (e) at least the chamber 15 being immersed in a coolant liquid (shown as having a level 55). As shown, the heat exchanger 5 (comprising either plates or sinuous tubes) is positioned in an open-topped compartment defined by walls 29, 33 and combustion gases pass from the outlet 17 of the burner via duct 7, tubes 43, and ports 47 therein, and rise upwardly through the heat transfer liquid to pass ultimately (after separating out of the liquid) to flues 49, 51. The same liquid serves as both coolant for the burner combustion chamber and as the heat transfer liquid and is continuously recirculated by the rising combustion gases between the heat exchanger compartment and the remainder of the vessel 1, there being a gap 33a between the bottom of the weir 33 and the floor of the vessel 1; or alternatively ports may be provided in the walls of the weir close to the floor of the vessel 1. In the operation of the burner 4 the combustion air entering at 11 forms a downwardly flowing layer 53 on the wall of the duct 19. Fuel is injected via one or both of the inlets 21 and 23 and combustion occurs mainly within the duct 19 but also in the chamber 15.
Patent GB-517614-A (GB)
Title: Improvements in or relating to magneto-electric machines
IPC: H02K21/14
Filed: 1938-06-24
Abstract: 517,614. Magnetos. WEST, H. E, June 24, 1938, No. 18838. [Class 35] An ignition unit for multi-cylinder engines comprises a distributor, the arm of which is mounted directly on the rotor shaft of a magneto having its rotor and stator poles arranged to give as many flux cycles in one revolution of the rotor as there are cylinders, the magneto being of the type having two or more pairs of stator polepieces, each with a primary and secondary coil, and a permanent magnet rotor with a number of equi-spaced poles, the spacing of the stator poles 'in each pair being equal to that 'between dissimilar rotor poles and the pairs of stator poles being spaced apart from one another so that they successively form closed circuits with two rotor poles on equal angular movements of the rotor. In the magneto shown, suitable for a 24-cylinder engine, the rotor has twelve tapering magnets 1 secured on a soft iron cylinder 3 by circular clamps 5 and aluminium wedges 4. The two stator elements have pole pairs 6, 7 subtending 30‹ at the shaft centre and displaced from diametral symmetry by 15‹ so that when the poles 6 coincide with a pair of rotor poles the pair 7 is midway between the opposite pair of rotor poles. Thus 24 flux pulses per revolution are produced. The contact-breaker 11, Fig. 2, for the primary windings 8 consists of 'one or more rockers operated by a multiple-peak cam 12, and the secondary windings are connected to the distributor, the arm 9 of which is mounted on the magneto shaft 2. To reduce the number of rotor magnets for a given number of cylinders or to increase the flux pulses per revolution of a rotor with a given number of magnets more pairs than two of stator poles are employed, these being spaced from one another by equal parts of 'the angle between'dissimilar adjacent rotor poles.
Patent GB-239180-A (GB)
Title: Improvements in or relating to tripping arrangements for the cylinders and inking rollers of rotary printing machines
IPC: B41F33/08
Filed: 1925-07-24
Abstract: 239,180. Maschinenfabrik Augsburg- Niirnberg Akt.-Ges. Sept. 1, 1924, [Convention date]. Tripping-arrangements; inking-apparatus. - Tripping-devices for the offset cylinders and for the inking-rollers of rotary offset presses having several printing sets are so constructed that the cylinders and inking rollers of each set can be tripped by electromagnetic means either simultaneously, or in selected groups, or singly. As shown, the offset cylinder b and the inking-rollers d of a rotary offset machine a, b, c are tripped by an eccentric k on a shaft e, the eccentric lever serving to rotate eccentric bearings in which the offset cylinder is rotated. The lever also actuates a lever m connected to the inking-roller tripping means. The shaft e is geared by wheels h, g to a gear f free to slide on the shaft i which normally rotates without driving the gear f. The wheel f is moved axially by a plate q when a set of electromagnets o is energized by the depression of a switch n<1>, Fig. 3. The axial movement causes the wheel f to be clutched to the shaft i, and the tripping-devices are thus actuated. After half-a-revolution of the shaft e a projection v actuates a switch w to open the electiomagnet circuit, and a spring stop t holds the shaft e so that that rollers remain tripped until the switch n<1> is again operated. The plate q is moved by spring-action to declutch the gear f. The electric circuits to three electromagnets o<1>, o', o<3> are shown in Fig. 3, and in addition to the switches n<1>, n<2>, n<3> for operating the tripping- devices of three separate printing-sets, there are provided switches y<1>, y<2>, y<3> so arranged that if all three switches are closed either of the switches n<1>, n<2>, n<3> will operate all the tripping-devices, or if any pair or switches y', y<2>, y<1> is closed the corresponding switches n<1>, n<2>, n<3> will operate two tripping-devices.
Patent GB-182815-A (GB)
Title: Improvements relating to self acting mules
IPC: D01H3/08
Filed: 1922-07-10
Abstract: 182,815. Soc. AlsaciennÚ de Constructions MÚcaniques. July 9, 1921, [Convention date]. Mules.- In a mule having a driving-shaft rotating at a constant speed, such as is described in Specification 162,629, the rollers are driven at two different speeds during the outward run. At the commencement of the run they are driven at a low speed from the shaft A, Fig. 1, through the clutch E, E', gearing J, K, L, M, and ratchet 0, later the clutch E, E' is opened the clutch F, F<1> closed and the roller shaft D is driven direct at a higher speed. The clutch parts E, F and gear G to drive the carriage are on a sleeve on the shaft D. The clutch part E<1> and gears J, M, are loose on the shaft. The ratchet-wheel 0 is keyed to the shaft and the pawl N carried by the gear M is controlled by a flat spring P mounted friction-tight on the ratchet-wheel. The clutch E, E<1> is closed by a lever I controlled by the cam H<1>. The lever S controlling the clutch F, F<1> is prevented from movement until the appropriate time by a bar T, Fig. 3, on the carriage, which has a recessed part T' to allow movement of the lever. The low speed then becomes inoperative as the spring P releases the pawl from the ratchet-wheel.
Patent GB-916214-A (GB)
Title: Phthalic anhydride purification process
Inventor: TOMLINSON RICHARD WILLIAM
IPC: C07C51/573
Filed: 1960-05-30
Abstract: A process for purifying crude phthalic anhydride obtained by the oxidation of naphthalene with oxygen containing gases such as air comprises heating the crude phthalic anhydride in the presence of a phthalate of potassium and in absence of any substantial amount of oxygen at a temperature below 250 DEG C. and below the boiling point of phthalic anhydride and thereafter distilling the phthalic anhydride.  The potassium phthalate may be formed by the addition of potassium hydroxide or another potassium compound e.g. potassium carbonate which will react with phthalic anhydride or phthalic acid to the crude phthalic anhydride employed as starting material.  The examples relate to the purification in a nitrogen atmosphere of crude phthalic anhydride obtained by the catalytic vapour phase air oxidation of naphthalene over a vanadium catalyst.
Patent GB-147083-A (GB)
Title: Improvements in periscopes the ocular of which does not move in or out with the sliding tube
IPC: G02B23/08
Filed: 1920-07-07
Abstract: 147,083. Blum, U. March 14, 1919, [Convention date]. Periscopes.-In periscopes, the ocular of which does not move in or out with the sliding tube, the rays of light emerge from the sliding tube in a downward direction and the ocular is arranged so that the descending tube may pass through the stationary part containing the ocular. To facilitate this movement, the optical parts situated in the stationary part containing the ocular are moved out of the path of the descending tube. As an example, the mirror 4, normally pressed by a spring 5 against a stop 6, is pushed by the descending tube into a recess 7, and the field lens 8 may also be folded into a recess against a spring 9.
Patent GB-1422357-A (GB)
Title: Devices for emitting shock waves
IPC: G10K15/04
Filed: 1973-04-19
Abstract: 1422357 Explosive devices FRANCE ARMED FORCES MINISTER OF 19 April 1973 [25 April 1972] 19201/73 Heading F3A [Also in Division G4] An explosive device for transmitting shock waves under water, comprises, in one embodiment, Fig. 1, a detonating cord 1, part of which is isolated from its surroundings by shock-wave absorbent material 2. The shock wave com prises a plurality of pulses which can be used for the remote control of submerged automatic exploration and measuring devices, and the operation of shut-off valves for petroleum installations. Alternatively, the shock wave can convey a message to a submerged submarine. In another embodiment, Fig. 3, the detonating cord 1 is completely embodied in the shock-wave absorbent material 2 but is provided with unions into which explosive charges 4 or solid plugs 3 can be threaded in accordance with the signal required.
Patent GB-506026-A (GB)
Title: Improvements in or relating to vehicle chassis frames
Inventor: BRUSS FRANZ
IPC: B62D23/00
Filed: 1937-08-13
Abstract: 506,026. Motor-vehicle frames. AMBIBUDD PRESSWERK GES. Aug. 13, 1937, No. 19239/38. Convention date, Aug. 15, 1936. Divided out of 489,072. [Class 79 (iv)] In a combined chassis frame'and body underframe having box-section longitudinal side frame-members interconnected by transverse frame-members, the side members 30 at their rear ends terminate forwardly of the rear wheels or rear axle and are interconnected by a transverse box-section frame member 35 from which project rearwardly supports or brackets 36 not in alignment with the side members 30 but located between the rear wheels and adapted to carry the rear springs and a trunk housing. The side members 30 may converge at the front ends and the transverse member 35 may include oblique end portions 39, the brackets 36 being secured adjacent thereto. The propeller shaft may pass through casings 37, 38 forming the centre parts of the cross-frame members 32, 35.
Patent GB-636692-A (GB)
Title: Improvements in or relating to vaporising and disseminating pest combating compounds
IPC: A01N25/20
Filed: 1947-07-18
Abstract: A pest-combating composition comprises a mixture of a solid material capable of gas-evolving exothermic non-detonating decomposition, either in self-sustained fashion at ordinary atmospheric pressures or rendered self-sustaining by a sensitizer, when initiated by local heating, a liquid thermally vaporizable pesticidal compound and a solid carrier therefor.  The carrier, which is insoluble in the liquid, may be kieselguhr, low density wood flour, charcoal, silica gel or organic colloids, which although soluble in the liquid can thicken it to form a fluid composition which will not flow under small stresses, such as cellulose esters, cellulose ethers, polymerized unsaturated compounds. proteins and gums.  Pesticides specified are: iso-bornylthiocyanoacetate (which may contain gamma hexachlorcyclohexane), orthodichloro-benzene, hexaethyl tetraphosphate, para-nitro-phenyl di-ethylthiophosphate (which may contain triethyl thiophosphate and monoethoxy di-para-nitro-phenylthiophosphate), tetrachlorethane and dimethylphthalate.  The gas-evolving compositions specified are: ammonium nitrate and a chromium compound, ammonium dichromate, and guanidine nitrate and/or nitro-guanidine mixtures with sensitizers as given in Specification 620,600.  The compositions containing organic colloids may be extruded into rods, &c., and those containing other carriers may be packaged in powder form or may be compressed into cakes which may be wrapped in waxed paper.
Patent GB-1101166-A (GB)
Title: Fluid pressure regulator
IPC: G05D16/18
Filed: 1965-05-07
Abstract: 1,101,166. Pure fluid amplifiers. BENDIX CORPORATION. May 7, 1965 [May 27, 1964], No. 19392/65. Heading G3H. A pure fluid-pressure regulator comprises an inlet 12 leading to a power jet 14 opposite which is arranged a dump passage 15 and an outlet 16. The amount of fluid discharged into the passages 15, 16 depends on the fluid-pressure in control passages 23, 25. The passage 23 is a bias passage supplied from the inlet 12 through a restrictor 24 while the passage 25 is supplied from the inlet 12 through an adjustable throttle 31 and from the outlet passage 16 through a passage 30. Thus variations in the inlet and outlet pressure act through the passage 25 to deflect the power jet to maintain a constant pressure in the outlet passage 16.
Patent GB-353208-A (GB)
Title: Method and device for the production of collapsible tubes and other containers of acetyl-cellulose and the like
IPC: B29C41/14
Filed: 1930-06-25
Abstract: <PICT:0353208/IV/1> In a method of making collapsable tubes or other thinwalled containers by forming a skin of acetyl cellulose or the like on a shaping-body and removing the skin by turning it inside out, a ring is loosely mounted on the shaping-body to facilitate removal of the skin.  As shown, the shaping-body 3 is provided with an enlargement 4 against which the ring 5 is held.  The body is coated by dipping, spraying, casting, or the like so that the upper edge of the skin formed by drying of the solution extends over the lower edge of the ring.  On moving the ring downwards, the skin is turned inside out and removed from the body.  The outer surface of the skin is preferably coated with a medium such as soap solution to prevent the walls from sticking during removal.  The body 3 may be provided with raised or recessed portions to form inscriptions or designs on the finished container.  The coating-solution may consist of cellulose acetate in a mixture of ethyl acetate, methanol, and toluol, or of methyl acetate and methanol, and diglycol ether of phthalic acid and a softening-agent such as methyl paratoluene sulphamide may be added.
Patent GB-1237538-A (GB)
Title: Cutting tools
Inventor: OWEN FRANK
IPC: B23B27/00
Filed: 1968-04-24
Abstract: 1,237,538. Cutting inserts. MUREX Ltd. 24 April, 1969 [24 April, 1968], No. 19425/68. Heading B3T. A cutting insert for a cutting tool is in the form of a blade which comprises a plurality of contiguous edge faces 4 each face being provided with spaced apart parallel recesses 8 connected by a plurality of spaced apart coplanar lands 10 which, at the juncture between the edge faces and top and bottom surfaces, constitute cutting edges. The insert may have three or four edge faces and is reversible. In use two blades may be placed one on top of the other so that the lands on one blade overlie the recesses on the other blade, the edge faces lying in the same plane but out of phase with one another. The corners of the insert may be angled as shown in Fig. 3.
Patent GB-705577-A (GB)
Title: Improvements in foil feeding mechanism for rotary blocking machines
Inventor: BATTEY ALFRED PIERSSENE
IPC: B41F13/04
Filed: 1950-08-03
Abstract: 705,577. Embossing machines. CRABTREE & SONS, Ltd., R. W. Aug. 3, 1951 [Aug. 3, 1950], No. 19451/50. Classes 100 (2) and 100 (4) A blocking machine comprises a pair of continuously rotating die and impression cylinders 1, 3 the former carrying a die 2 which is thereby intermittently moved into impression relation with the impression cylinder, and means to teed forward a foil strip S during the impression period. The foil strip S is fed from a supply roll 6 by a pair of driven feed rollers 17, 16 over a guide roller g to a pair of turning bars 18, 19 which displace the strip longitudinally so that, after it has completed a loop via pulleys 8, 9, cylinders 1, 3 and pulleys 12, 11, it may be fed in an axially displaced position by the same feed rollers 16, 17 to a slipping belt-driven take-up roll 7 thus ensuring that the same amount is taken from roll 6 as is given to roll 7. The pulleys 8, 11 are fixed to the framework and pulleys 9, 12 are mounted at opposite ends of a lever 14 pivoted at 15 so that, when rocked clockwise, the strip is pulled through the cylinders 1, 3 at the same speed as their rotation so that a die 2 on the cylinder 1 travels with the foil strip S. After the die 2 has completed impression it continues to rotate but the lever 14 swings anti-clockwise to feed the strip backwards. The strip however is advanced one impression space by the rollers 16, 17, driven by a free wheel drive 45-48, Fig. 4, from a quadrant 44, a link 41 slidably adjustable in a guide 38 rocked about a pivot 39 by a crank 36 reciprocated from a gear 31 cyclically driven from a gear 33 on a machine shaft 32. Shaft 32 also oscillates the lever 14 by a chain drive 30 to a wheel 28 driving an endless chain 27 having a block 26 slidingly engaging a guide 25 on the lever 14. As the slide travels round the end sprocket wheels 29, the rocking of the lever 14 is gradually slowed and virtually stops before the slide is carried round the return section of the wheel 29, thus rocking the lever in the reverse direction. The feed of the stop is adjustable by varying the swing of the sector 44 effected by moving the point of connection 40 of the link 41 along the rocking guide 38. The connection 40 is moved by a rack 53, pinion 55 and handwheel 56. A second strip can be simultaneously fed to the machine from a second supply roll 6' over feed rollers 16', 17', to the left of roll 17, over turning bars 18', 19<SP>1</SP>, through additional looping rollers on the lever 14 and returns over rollers 16<SP>1</SP>, 17<SP>1</SP> again, thence back to a second take-up roll 7'. The die cylinder 1 may be heated and the machine may include an inking mechanism I.
Patent GB-1179458-A (GB)
Title: Bomb adapted to be dropped from an Aircraft
Inventor: SCHROTH FRIDOLIN
IPC: F42B10/52
Filed: 1967-04-27
Abstract: 1,179,458. Bombs. FORGES DE ZEEBRUGGE S.A. 27 April, 1967 [26 July, 1966; 24 Dec., 1966], No. 19500/67. Heading F3A. A bomb has a nose portion provided with braking means constituted by transverse corrugations 5, 6 normally covered by a cover 12 having a smooth outer surface, the cover being adapted to be removed from the corrugated surface upon release of the bomb from an aircraft. The corrugations are formed on the casing of the bomb or on a cap fitted over the nose of the bomb. The cover 12 may be formed in four sections which are freed by firing an explosive charge 16 on dropping the bomb, and hinge rearwardly to provide guiding surfaces 17 and additional braking surfaces 18. Alternatively, the cover may be removed by a wire attached to the cover and to an adjoining portion of the aircraft. The cover 12 may be made of metal, pressed material, fibrous material, plastics material or a combination of these materials.
Patent GB-190510-A (GB)
Title: Improvements in the treatment of rubber
IPC: C08C1/12
Filed: 1921-07-20
Abstract: 190,510. Reid, C. July 20, 1921. Spray evaporators.-Rubber latex is dried by spraying it into the interior and towards the apex of a converging cone of dry gas, which may be heated. The atomizers described in Specifications 161,805 and 188,870, [both in Class 75 (i), Burners &c.], may be used for carrying out the process.
Patent GB-624989-A (GB)
Title: Improvements in or relating to electric motor control systems
IPC: B21B37/60
Filed: 1947-07-22
Abstract: 624,989. Two-part couplings. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. July 22, 1947, Nos. 19587 and 19588. Convention dates, June 14, 1944 and Nov. 10, 1944. [Class 38 (i)] (Also in Groups XXXVII and XXXVIII] An electric motor control system (see Group XXXVII) comprises a plug-and-socket device, the socket having, for example, insulated terminals 64d, 64b and 64c, which may be of tubular form with a cut-away portion for receiving the in-turned ends of a spring contact member 132. The terminals 64b and 64c are normally short-circuited by means of contact strips 185 and a member 186 which is spring-biassed into engagement with both strips. The plug comprises contact prongs 60a, 60b and 60c, and an actuator 60d, which is, for example, a rod of insulating material with a bevelled and reduced end portion 191, adapted to be positioned between adjacent ends of the strips 185 so as to engage the member 186 and disconnect it from the contact strips.