baber/WOPTO huggingface dataset:
Patent GB-652533-A (GB)
Title: Aircraft having a sustaining rotor
IPC: B64C27/615
Filed: 1948-01-29
Abstract: 652,533. Rotating wing aircraft. AUTOGIRO CO. OF AMERICA. Jan. 29, 1948, No. 2677. Convention date, Dec. 9, 1939. [Class 4) A pitch control mechanism for an aircraft lifting and sustaining rotor comprises a non- rotary swash-plate coaxial with the rotor hub and tiltable for cyclic pitch control about one or more axes perpendicular to the hub axis, together with blade pitch angle varying levers co-operating with the swash plate, the swash-plate track being of sinuous form, whereby the pitch angle oscillation imparted to the blades includes one or more components of frequency twice or more times per revolution, whose amplitude and phase is/are independent of the tilt of the swash plate which determines the amplitude and phase of the fundamental term of frequency once per revolution. Tilting of the swash-plate in at least one azimuth for imparting a cyclic variation of pitch angle is accompanied by an axial displacement of the centre of the swash-plate for imparting change of collective pitch angle. Each blade 9 is mounted on the rotor hub 5 by an inclined flapping hinge 10 and is provided with a trailing edge camber varying flap 11 of the type disclosed in Specification 652,598 pivotally mounted at 13 and connected by a torque tube 12 to a control arm 15 provided at its free end with a roller 17. The hub 5, driven by the rotor shaft 6, is supported by bearings 7 in a fixed casing 8 which slidably supports a sleeve 23 keyed thereto at 23a and formed with trunnions 22 rearwardly offset from the rotor axis to support a gimbal ring 20, in turn provided with trunnions 21 to support a swash-plate 19 formed with a cam track 18. The track 18 does not lie in an obliquely inclined plane, but is curved as shown in Fig. 2, the inclination from the highest to the lowest point being arranged to lie on the diameter " XX " and the rate of curvature being greater adjacent the lowest point. The rollers 17 engage the track 18 which by virtue of its orientation and curvature automatically causes the incidence of each blade to remain at a substantially constant minimum value while the blade is advancing and to be abruptly increased and decreased while the blade is retreating, thus reducing flapping movement. Manual control of the blade incidence in the rolling plane is provided by adjusting the vertical position of the sleeve 23 by rods 146 coupled thereto and located in a transverse vertical plane containing the axis of the trunnions 22 while pitching control is similarly provided by a rod 146a which, because the trunnions 22 are rearwardly offset from the rotor axis, causes a greater displacement of the forward side of the swash-plate 19 than of the rear side, thus causing a greater increase of pitch on the blades which are retreating than on those which are advancing. The Specification as open to inspection under Sect. 91 comprises also the subject-matter of Specification 652,598. This subject-matter does not appear in the Specification as accepted.
Patent GB-451027-A (GB)
Title: Improvements in slitting means
IPC: B26D5/02
Filed: 1935-01-28
Abstract: 451,027. Sharpening cutting - discs. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(Cameron Machine Co. ; 61, Poplar Street, Brooklyn, New York, U.S.A.) Jan, 28, 1935, No. 2738. [Classes 83 (ii) and 83 (iv)] [See also Group VIII] Rolling discs; axial rolling.-In a machine in which a slitting disc 11 co-operates with a backing roller 10 having a glass-hard surface, the disc 11 is pressed into engagement with the roller 10 by a grooved sharpening disc or discs 17 on an adjustable spring-pressed lever 19.
Patent GB-1202514-A (GB)
Title: Gas burner
Inventor: CHERNY ANATOLY ALEXEEVICH
IPC: F23D14/00
Filed: 1969-01-17
Abstract: 1,202,514. Burners. PENZENSKY KOMPRESSORNY ZAVOD. 17 Jan., 1969, No. 2837/69. Heading F4T. A gas burner, shown mounted in a channel 16 in the wall of a cupola furnace chamber for melting metal, comprises a converging nozzle 6 supplied with a gaseous oxidizere.g. air, and an inner coaxial distributing tube 12, supplied with combustible gas, which projects beyond the outlet end 15 of the nozzle and has a central outlet end opening 14 and lateral openings 13 located some inside and some outside the nozzle outlet 15. Preferably the area of opening 14 and the total areas of the lateral openings within and without the nozzle are 0À2-0À5%, 2-5% and 1-2À5% respectively of the annular area of the nozzle outlet, to give intense vorticity and rapid mixing of gas and air. Gas is supplied after the air has been turned on, the mixture is ignited on leaving the nozzle, and most is burnt within the tunnel 16.
Patent GB-111403-A (GB)
Title: Improvement in Chemical Recharge for Fire Extinguishers.
Inventor: MONEY GEORGE JOHN
IPC: A62C13/00
Filed: 1917-02-28
Abstract: 111,403. Money, G. J. Feb. 28, 1917. Drawings to Specification. Chemicals; extincteurs.-The frangible bottle of a chemical fire-extinguisher contains a mixture of carbon tetrachloride and sulphuric acid diluted to the same specific gravity as the carbon tetrachloride.
Patent GB-675748-A (GB)
Title: Improvements in casings for pyrophoric lighters
IPC: F23Q2/36
Filed: 1951-02-08
Abstract: 675,748. Making lighter casings. RACEK, A., and RAGANITSCH, J. Feb. 8, 1951 [Feb. 15, 1950], No. 3061/51. Class 83 (ii). [Also in Group XI] In a lighter casing, comprising a single-piece sheet metal body, at least a part of its narrow side walls 2, 3 are shaped out of said piece and embraced by an open frame 16 which holds the casing together. A sheet-metal blank, Fig. 1, produced by stamping and pressing, is bent along the edges of the narrow side wall 2, flanges 3 and 4 providing the other side wall and bottom, respectively. The frame 16 has fixing lugs 18, 19 and inwardly-flanged margins 17 corresponding to and interlocking with stepped edges 15 of the body. The casing may be further stiffened at the side wall 3 by a sheetmetal, channel-section rail 21 for guiding the friction-wheel carrier. Before the frame 16 is applied, the rail is fixed inside the body with its web 22 adjacent the side wall, by fixing-lugs 23.
Patent GB-270004-A (GB)
Title: Improvements in driving gear for bicycles
IPC: B62M9/00
Filed: 1926-02-03
Abstract: 270,004. Burridge, J. H. Feb. 3, 1926. No Patent granted (Sealing fee not paid). Chain and like gearing, non-variable speed.- A chain wheel d with pedal crank f is rotatably mounted on each end of a fixed spindle a carried in the bottom bracket of the cycle frame, and a separate chain takes the drive from each chain wheel to a sprocket on the back wheel. A ball or roller bearing e may be interposed between each chain wheel and the spindle a.
Patent GB-506778-A (GB)
Title: Improvements in centrifugal dust collectors or separators
IPC: B04C5/24
Filed: 1938-02-02
Abstract: 506,778. Centrifugal dust-separators. LAMB, A. F. Feb. 2, 1938, No. 3221. [Class 23] A centrifugal dustseparator has an annular inlet chamber a with a tangential inlet b arranged above a truncated conical chamber d which terminates in a vortex chamber i, and in the base of the chamber a are a number of circumferentially disposed ducts c which are downwardly -inclined both .circumferentially and radially, and are constructed so that their cross-sectional area diminishes from inlet to outlet. These ducts open into the chamber d, within which is disposed a flue e leading to a clean gas discharge pipe f having at its upper end a casing g provided with an outlet. The first separation occurs in the chamber a and some gas passes to the discharge pipe f while dust-laden gas passes through the ducts c and the chamber d to the vortex chamber i. The clean gas then passes up the flue e to the discharge pipe f and the separated dust drops to the outlet j. The flow through the separator may be obtained by means of a blower, or a suction fan, or by the use of both.
Patent GB-668235-A (GB)
Title: Process for the preparation of methionine derivatives
Filed: 1950-02-08
Abstract: The invention comprises new methionine derivatives of formula <FORM:0668235/IV (b)/1> (in which R denotes H or acyl) which are prepared from compounds of the formula <FORM:0668235/IV (b)/2> in which X is CN, COONH4 or COO alkyl, by known methods for producing a CONH2 group.  For example, the cyanide is saponified, the ammonia salt is treated with a dehydrating agent and the ester is treated with ammonia.  The NH2 group may be acylated before or after the production of the CONH2 group. Instead of using methionine as starting material crude salts such as those obtained in the synthesis of methionine by acid saponification of acylamido-2-methylmercapto-ethyl malonic acid-dialkyl esters or cyanacetic alkyl esters or from a -amino-g -methylmercaptobutyronitrile may be used.  In the examples: (a) methionine is boiled with ethyl-alcoholic hydrochloric acid to give the ethyl ester of methionine which is treated with ammonia to give the hydrochloride of a -amino-g -methylmercapto-n-butyric amide; (b) methionine is boiled with methyl alcoholic hydrochloric acid and the methyl ester of methionine so formed is treated with ammonia to give the hydrochloride of a -amino-g -methylmercapto-n-butyric amide; (c) crude a -amino-g -methylmercapto-n-butyric acid ethyl ester hydrochloride is treated with ammonia to give a  - amino - g  - methylmercapto - n - butyric acid amide which is treated in methyl alcohol solution with glacial acetic acid to give a -amino-g -methylmercapto-n-butyric acid acetate; (d) crude methionine ethyl ester hydrochloride is heated with acetic anhydride to give the ethyl ester of a  - acetamino - g  - methylmercapto - n-butyric acid which is treated with ammonia to give a  - acetamino - g  - methylmercapto - n - butyric acid amide; (e) a -amino-g -methylmercapto-n-butyric amide hydrochloride is treated with acetic anhydride to give a -acetamino-g -methylmercapto-n-butyric amide; (f) methionine is heated with chloroformic benzyl ester and caustic soda and then acidified; the N-carbobenzyloxy-methionine formed is treated with ethyl or methyl alcoholic hydrochloride to give a -carbobenzoxyl-amino-g -methylmercapto-n-butyric ethyl or methyl ester which is heated with ethyl or methyl alcoholic ammonia to give a -carbobenzoxyl-amino-g -methylmercapto-n-butyric acid.
Patent GB-450878-A (GB)
Title: Improvements in or relating to wind direction indicators for aerodromes
IPC: B64F1/18
Filed: 1935-02-01
Abstract: 450,878. Electric signalling systems. CHANCE BROS. & CO., Ltd., and HALLETT, L. B. H., Glass Works, Smethwick, Birmingham. Feb. 1, 1935, No. 3280. [Class 40 (i)] A remotely controlled wind-direction indicator for aerodromes comprises a motor-driven rotary indicator, the motor being controlled by slip-rings or cams and electromagnetically operated switches, the magnets being less in number than the number of positions the indicator may take and operated in varying combinations by rotatable selective means at the control position.. The indicator may be a T-shaped member rotatable on a circular track and illuminated at night. In the circuit arrangement shown in Fig. 4, the selective means at the control position comprises three slip rings 24-26 rotatable by a handle and engaging brushes 27-29 to operate magnets A-C at the indicator in combinations dependent on the angular position of the handle. The magnets select a particular slip ring 1 ... 8 and operate magnet D which closes the circuit of motor M including a brake magnet E to release the indicator which is thereupon rotated until the circuit of D is open at the slip ring. The slip-rings at the transmitter and indicator may be replaced by cam controlled switches. In a modification giving a finer setting, the transmitter and indicator are provided with two sets of slip rings, one set, for fine control, being geared to the other coarse control, so that it makes a complete revolution for oneeighth of a revolution of the other. Each set at the transmitter has a corresponding set of magnets such as A,B,C, at the indicator, each of which selects a further magnet of respective groups controlling the circuits over the coarse and fine control slip-rings or cam-operated contacts at the receiver. The direction of rotation of the motor may be controlled by the direction of rotation of the handle by the provision of a reversing relay. Provision may also be made for opening the current supply circuit during rotation of the handle by arranging that the handle, when at rest, is pressed into engagement with a notched circular member, disengagement of the handle causing the opening of a main switch.
Patent GB-751624-A (GB)
Title: Improvements in or relating to methods and devices for trimming cast lines of type
IPC: B41B11/72
Filed: 1954-02-04
Abstract: 751,624. Type-bar-making machines. LINOTYPE GES. Feb. 4, 1954 [Feb. 9, 1953], No. 3287/54., Class 100 (3). Trimming type-bars.- A method of reducing to an exact required height and thickness a cast line of type or slug in a typecasting machine comprises machining the back face, i.e. the face opposite the type face, and one side face of the slug, by means of precision cutting tools which are independent of the mould and can be precisely adjusted, after the slug is ejected from the mould but before it is transported to the galley of the machine. The slug 6, Figs. 1 and 2, is pressed by ejector blades 2 so that its type face rests against a series of lamellae 3, 4, 5, which are thus severally placed in right- or left-hand positions according to the conformation of the type face, being then locked in their various positions by a plate 17 so as to form a stop. The slug is held against a stop bar 8 by a force 9. The slug rests on a carriage 1 supporting also the lamellae and the bar 8. After ejection of the slug, the carriage is moved to transport the slug past milling cutters 26, 23 mounted on a common shaft 25, which cutters are adjustable and machine the back face and one side face of the slug respectively, a stationary knife 19 removing the burrs from-the other side face. The knife 19 is carried on a rail 20 accommodated in a channel 18. Cooling liquid flows through a passage 21,
Patent GB-770175-A (GB)
Title: Improvements in or relating to electrical resistors
IPC: H01B1/08
Filed: 1955-03-22
Abstract: 770,175. Electrical resistors. WELWYN ELECTRICAL LABORATORIES, Ltd., and BROWNING, J. March 22, 1955 [Feb. 4, 1954], No. 3361/54. Drawings to Specification. Classes 37 and 38 (1). An electrical resistor produced by subjecting to reducing conditions a material containing titanium dioxide has applied thereto a layer of a metal or metal alloy selected from gold, platinum, palladium, iridium, rhodium and osmium so as to provide terminals having. negligible contact resistance. Suitable metal compounds are gold, platinum, iridium and palladium resinates, sulpho-resinates and alginates, but preferably a gold/platinum alloy is used. The metal compounds are applied as a solution; a sol or as a colloidal dispersion, the solvent or other vehicle being removed as by gentle heating before firing at a temperature of 600-700‹ C. The coating may be applied by using a roller printer, dipping, spraying or brushing. After firing an overcoating of silver, which is thicker than the noble metal coating, may be applied. Specifications 467,113, [Group V], and 583,061 are referred to.
Patent GB-739409-A (GB)
Title: Improvements relating to ball couplings
IPC: B60D1/06
Filed: 1954-02-05
Abstract: 739,409. Ball couplings. BATE, B. DIXON-. Feb. 5, 1954, No. 3475/54. Class 103 (5). A spring-pressed plunger 6 has a slot 7 in which works a pin 8 eccentrically mounted on a web 11 rotatable by a shaft 9 and handle 10. Rotation of the pin 8 lifts the plunger to release the ball, and the plunger is prevented from rotating by the web 11 contacting the cap 13 and a flat face 12 on the plunger. The handle 10 is held in the locked position by a leafspring 17 which must be depressed by the nib 16 when the handle is turned. The pin 8 is positioned so that in the fully open position it cannot go over centre so that the plunger will not remain in the unlocked position but will be returned by the spring 14. The hole 15 is used as an oil reservoir to lubricate the slot 7 by a wick 19.
Patent GB-314593-A (GB)
Title: Improvements in the manufacture and production of nitrogenous vat dyestuffs
IPC: C09B3/30
Filed: 1928-02-04
Abstract: 314,593. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). Feb. 4, 1928. Dibenzanthrone derivatives.-Nitrogenous vat dyes are produced by heating nitrodibenzanthrones or nitroisodibenzanthrones or their derivatives or homologues, or reduction products thereof, with weak alkaline agents, with or without solvents or diluents and (or) metals or metal compounds. In examples, (1) nitrodibenzanthrone, obtained according to Specification 220,212, is treated with potassium acetate and a little copper oxide in nitrobenzene; potassium carbonate or formate or sodium acetate may also be used. (2) Tetrabromnitrodibenzanthrone (obtained by brominating in nitrobenzene, with iron as catalyst, the nitrodibenzanthrone which is prepared by nitrating dibenzanthrone in nitrobenzene and adding sodium bisulphite after nitration) is similarly treated, using potassium carbonate. (3) Nitroisodibenzanthrone (obtained by nitrating isodibenzanthrone in. nitrobenzene) is treated as in the first example. (4) Aminodibenzanthrone, obtained according to Specification 1818/05, is heated with sodium formate or potassium acetate in nitrobenzene. (5) Aminodibenzanthrone, obtained by reducing the nitrodibenzanthrone described in Specification 220,212, is heated in nitrobenzene with potassium carbonate and cupric oxide. (6) Tetrabromaminodibenzanthrone (obtained bv brominating in nitrobenzene, with iron as catalyst, the aminodibenzanthrone prepared by reducing the nitro compound referred to in example 2) is boiled with potassium carbonate in nitrobenzene. (7) Aminoisodibenzanthrone (obtained by reduction of the above-mentioned nitroisodibenzantbrone with hydrosulphite) is treated as in examples 4 to 6. (8) Nitrodibenzanthrone (obtained by nitrating dibenzanthrone in glacial acetic acid) is heated with sodium acetate and copper carbonate. Specification 220,930 also is referred to.
Patent GB-624606-A (GB)
Title: Improvements in foundation templets for buildings
IPC: E04G17/14
Filed: 1945-02-13
Abstract: 624,606. Foundation templets; casting concrete walls in situ ; portable buildings; walls. RUMBLE, R. W. Feb. 13, 1945, No. 3568. Convention date, March 9, 1944. [Classes 20(i), 20(ii) and 20(iv)] A foundation templet for defining the plan of a building is built up from a set of units comprising corner units 4, and connecting bars 6, each having a similar shape in cross-section. Coupling units 7 may be used to connect telescopically the units 4 and bars 6. Gussets 5 are provided to stiffen the corner units. The templet may form the footing of a permanent wall and particularly walls of the kind described in Specifications 616,525, 616,526 and 624,608. When used for setting out shuttering walls, the templets may be arranged in inner and outer sets each connected by ties 10. This arrangement is claimed in Specification 624,607. The templet may form part of a hollow wall of a portable building. The templet may be used for positioning the lower course of blocks of a concrete block wall. The parts of the templet are preferably made of sheet metal.
Patent GB-745653-A (GB)
Title: Improvements in or relating to gyroscopic apparatus
Inventor: WRIGHT GORDON PERCY
IPC: G01C19/16
Filed: 1953-02-10
Abstract: 745,653. Mounting bearings. KELVIN & HUGHES, Ltd. Jan. 15, 1954 [Feb. 10, 1953], No. 3719/53. Class 12 (1). [Also in Group XX] In gyro rotor spindle bearings the inner and outer races in each bearing are relatively axially movable by five to fifteen thousandths of an inch and springs means are arranged to apply an axial load to take up the play in both bearings. Preferably, the inner races 30 and 32 are held spaced apart while the outer races 31 and 33 are pressed towards each other. As shown, the outer races engage centrally recessed plates 45 and 36 one, 45, of which is slidable and pressed inwards by the resilient arms of plate spring 47, and the other 36 is fixed. The inner races 30, 32 are held apart by flange 42 and shoulder 51, ring 41 being interposed between race 30 and flange 42 and collet 37 between shoulder 51 and race 32. Spring 47 is mounted on spigot 46 of plate 45 and is loaded centrally towards the bearing by an annular shoulder 48 on sleeve 40. The outer race 31 is slidable in sleeve 40. Rotor 16 is electrically driven by fixed permanent magnet 21 and coil 20 carried on rotor spindle 26. Grub screw 50 acts as a stop.
Patent GB-995905-A (GB)
Title: Semi-conductor material
IPC: H01B1/08
Filed: 1962-01-31
Abstract: 995,905. Thermo-electric materials. SIEMENS-SCHUCKERTWERKE A.G. Jan. 31, 1962 [Feb. 2, 1961], No. 3768/62. Heading H1K. Materials for use in thermo-electric devices comprise Zn y Cd( 1-y )O, where 0 < y # .35 and A x (Zn y Cd( 1-y )) ( 1-x )O, where A is a positive ion with a valence of three or more, x#.3y and 0À05 # y # 0À35. Suitable positive ions are the trivalent ions of iron, chromium, aluminium and other transition elements and the trtravalent titanium and silicon ions. The typical compounds Cd 0 . 9688 Zn 0 . 0312 O, Cd 0 . 9233 Zn 0 . 767 O, and Cd 0 . 851 Zn 0 . 149 O, are made by ultrasonically stirring suitable quantities of cadmium oxide by ultrasonically stirring suitable quantities of cadmium oxide and zinc oxide together with acetone or alcohol, filtering, pressing the resulting mixture into pellets and sintering at 1200 C.
Patent GB-1207447-A (GB)
Title: Improvements in or relating to thermoplastic compositions
IPC: C08K5/41
Filed: 1968-01-25
Abstract: 1,207,447. Thermoplastic compositions. BOSTIK Ltd. 25 Jan., 1968 [26 Jan., 1967], No. 3862/68. Heading C3P. The hot melt processing properties of a thermoplastic polyvinyl chloride composition are improved by incorporating up to 35% by weight of an aromatic sulphone R-SO 2 -R 1 , wherein R is a phenyl or substituted phenyl radical, and R 1  is a phenyl, biphenyl or naphthalene radical or substituted derivative thereof. Preferred sulphones are tolylphenyl, xylyl naphthyl and xylyl biphenyl sulphone. In the examples, the following compositions are prepared: (1) polyvinyl chloride, tolyl phenyl sulphone, dibutyl in dilaurate and stearic acid, (II) polyvinylchloride, xylyl naphthyl sulphone, dibutyl in dilaurate and stearic acid.