baber/WOPTO huggingface dataset:
Patent GB-798310-A (GB)
Title: Stabilized magnetic compass
IPC: G01C19/36
Filed: 1956-05-25
Abstract: 798,310. Electron control systems. COLLINS RADIO CO. May 25, 956 [Oct. 13, 1955]. No. 16285/56. Class 40(1). The output of a magnetic type compass having a position output is compared with that of a horizontal gyro by means of a pair of synchros of which both the rotors and stators are movable, both of the rotors being coupled to the gyro while one of the stators is fed by the compass, the rotor voltage of this synchro being used to drive a motor to reposition both stators so as to bring the output of the first to zero and to produce an output from the second induced by an energized rotor. As shown (Fig. 1) the compass feeds the movable stator of synchro 12, the rotor of which together with the rotor of additional synchro 13, are driven in accordance with the position of gyro 21. Lack of positional correspondence between the stator and rotor of synchro 12 produces a signal which is fed to amplifier 23 and used to control two phase motor 24 also fed with a reference signal at the frequency in the synchros. The motor acts as a phase detector to reposition stator 15 to. eliminate the unbalance signal and at the same time to drive the stator 17 of synchro 13 the rotor 29 of which is fed with a signal at the desired output frequency. The output is taken from stator 17. In a modified arrangement (Fig. 2, not shown) a phase detector fed with a reference signal from source 27 is inserted between rotor 16 and amplifier 23.
Patent GB-1520986-A (GB)
Title: Traffic system
IPC: G05D1/02
Filed: 1976-04-22
Abstract: 1520986 Automatic control of steering DAIMLER-BENZ A G 22 April 1976 [24 April 1975] 16385/76 Heading G3R [Also in  Division B7]  A road vehicle 1 is automatically guided along a path by a system having at least one radiation emitter and detector mounted on the vehicle and co-operating with a reflecting surface 4 provided along the track. The radiation is ultrasonic and actuates hydraulic steering gear by an undisclosed electrical controller. The devices may be fitted on one side only, in which case the transit time of a radiation pulse is compared with a pre-set reference, or on both sides as shown, when the difference between the respective transit times is measured to indicate deviations from the centre line. They may be mounted at one or both ends of the vehicle, and in the latter case are selectable for forward or reverse motion. They are arranged on a circle whose centre 5 coincides with that of rolling motion and are horizontally disposed, the effective reflecting surface being vertical (the face of a plank 2) to minimize errors due to roll and tilt. At junctions such as in Fig. 3 guidance is by the devices on the side where the reflector is continuous; this may be selected manually or by signalling devices 251, 25r. Alternatively, in a double sided system, the lack of an echo within twice the normal time on one side is used to switch to control from the other. At intersections overhead reflectors may be provided, with transmitters and receivers on the vehicle roof, Figs. 5, 6 (not shown) or pivoted reflectors at the side may be used, Fig. 7 (not shown). The pulses are very short, repeated at less than 16Hz.
Patent GB-107519-A (GB)
Title: Improvements in Aerial Screw Propellers.
Inventor: GARSCADDEN THOMAS DUNLOP
IPC: B64C11/18
Filed: 1916-11-16
Abstract: 107,519. Garscadden, T. D., and Boyne, W. K. Nov. 16, 1916. Screw propellers.-The Specification describes means for determining the pitch angles of a propeller corresponding to different radii and from a diagram based on these angles setting out the effective working face of the blade, shown in plan.
Patent GB-258668-A (GB)
Title: Improvements relating to metal frame windows
IPC: E06B1/32
Filed: 1925-06-25
Abstract: 258,668. Crittall Manufacturing Co., Ltd., and Crittall, W. F. June 25, 1925. Window frames.-A combined metal and wood frame consists of a metal part A secured by screws &c. to a double rabbeted wood frame B, C. The wood may be primed beneath the metal and treated with solignum &c. The sill C is preferably of oak or other hard wood. The wood frame may be joined at the corners by open tenon joints.
Patent GB-1255435-A (GB)
Title: Biotin derivatives
IPC: C07D495/04
Filed: 1970-04-07
Abstract: 1,255,435. α-Methylbiotin. UPJOHN CO. 7 April, 1970 [19 May, 1969], No. 16471/70. Heading C2V. α-Methylbiotin of formula together with α-methyldethiobiotin and lydimycin, are produced by cultivating Streptomyces lydicus in aqueous nutrient medium and the α-methylbiotin is isolated from the medium by conversion to the t-butyl, phthalimidomethyl or phenacyl ester, adsorption on a surfaceactive adsorbent, e.g. a silica gel chromatography column, elution and recovery of a fraction containing only the ester of α-methylbiotin, and hydrolysation of the ester to α- methylbiotin. Also the ester may be separated by crystallization and partition chromatography. In another separation process the fermentation broth is contacted with activated carbon, from which a crude material is eluted and α-methylbiotin separated by chromatography.
Patent GB-1103045-A (GB)
Title: Improvements in the manufacture of bulbs for headlamps
IPC: H01K3/00
Filed: 1965-04-20
Abstract: 1,103,045. Sealed beam lamps. ROBERT BOSCH G.m.b.H. 20 April, 1965 [18 April, 1964], No. 16472/65. Heading H1F. In a method of manufacturing a sealed beam headlamp comprising a reflector, a transparent front disc sealed to the flanged rim of the reflector, and a dipped beam filament screened by a cap, the filament is inserted into the reflector prior to the fitting of the front disc by means of the clamping tongs of an assembly device which is supported on reference faces on the reflector rim and is then secured to electrodes located in the reflector. Preferably the main beam filament is also inserted by the tongs. The object of the invention is to enable the filaments to be inserted by movement of the tongs parallel to the reflector axis 0-0 without the need for adjustment perpendicular to this axis, and in one embodiment, Fig. 4. the main beam filament 27 is inserted first and secured to electrodes 28, 29, and the dipped beam filament 30 is then inserted simultaneously with the screening cap 31 and secured to electrodes 29, 33. The cap is secured to a carrier 34. In a modification the cap is secured to one of the electrodes, and may be formed with a slot at its apex to enable it to be inserted after the dipped beam filament. In an alternative embodiment, Fig. 5, the cap 38 is provided with a hole so that it can be suspended from the horizontal end portion of the electrode 37 after the main beam filament 35 has been secured. The dipped beam filament 39 is then secured to the electrodes 37, 40 and the cap is moved to the vertical end portion of the electrode 37, as shown, and fixed in position.
Patent GB-1117902-A (GB)
Title: Automatic steering device for row crop harvesters
Inventor: SCHMIDT LEWIS WALLACE
IPC: A01D23/00
Filed: 1967-04-11
Abstract: 1,117,902. Root-crop harvesters. A. M. JONGENEEL. 11 April, 1967, No. 16498/67. Heading A1F. [Also in Division B7] A towing connection 1 between an agricultural tractor and a root crop harvester comprises a main portion 7 articulated about a vertical pivot 10 to a front portion 8 under the control of a hydraulic ram 14. A pair of feelers 29 are pivotally connected to a bracket 19 which is adjustably mounted on an arm 18 extending laterally from the member 7, and are downwardly urged by a pair of springs 25. A four position open centre spool valve body 32 is secured to one arm 29 on a bracket plate 31 and its spool 33 is connected by a link 34 to the other arm 29. In the normal position, valve 32 is closed when the feelers 29 are sensing. e.g. a row of root crops 30. Should the implement deviate from its course, relative movement between the feelers 29 will occur, and according to the nature of the movement, the valve 32 will be operated to actuate ram 14 so as to correct the deviation.
Patent GB-980252-A (GB)
Title: Method of preparing uranium pentafluoride
IPC: C01G43/06
Filed: 1961-05-08
Abstract: Uranium pentafluoride is produced by contacting gaseous UF6 with gaseous HBr at a UF6 to HBr molar ratio of at least 1.7, under anhydrous conditions, at room temperature to 250 DEG  C., preferably 75 DEG  C. to 150 DEG  C.  The UF6 partial pressure is preferably one-sixth to two atmospheres.  If the reaction temperature is below 125 DEG  C. beta UF5 is produced, and at above 150 DEG  C. alpha UF5 is produced. Alpha UF5 can also be produced if the reactor is below 125 DEG  F. if the product receiver is maintained above 150 DEG  C. In the process localized areas of high HBr concentrations should be avoided, by using excess UF6 and thoroughly dispersing the HBr.  In the preparation of small quantities of UF5 the reactants may be contacted by slowly introducing a stream of HBr into a vessel containing UF6, or by freezing the reactants separately and allowing the temperature to increase to room temperature with the resulting gaseous HBr being introduced into the UF6 container. According to an example UF6 at 65 DEG  C. and HBr at room temperature were introduced through concentric nozzles to a reactor maintained at 80 DEG  C., the UF6/HBr ratio being 2:1. Beta UF5 was produced.  If the reactor is maintained at 200 DEG  C. and a UF6/HBr ratio of 2.3:1 is used, the alpha form was produced.
Patent GB-800094-A (GB)
Title: Vehicles
Inventor: CROSS ERIC WILLIAM
IPC: B60P7/12
Filed: 1955-06-09
Abstract: 800,094. Platform vehicles. METAL CONTAINERS, Ltd. Aug. 29, 1956 [June 9, 1955], No. 16628/55. Class 108(1) A platform vehicle is provided with a vertically movable roof 3 which is lowered by screw and nut mechanisms 6 on to stacks of drums to retain them in position. The roof has head-boards 7 to which guide rods 12 are attached by brackets 11, the rods 12 being engaged in guide tubes 13 secured to the end boards 14 by brackets 40. The screw and nut mechanisms at the front and rear of the vehicle are preferably interconnected for simultaneous operation. A removable side member 29 may be provided to give lateral support to the drums.
Patent GB-717372-A (GB)
Title: Process for splitting thioethers
Filed: 1952-07-02
Abstract: Thioethers of the formula Aryl-CH2-S-(heterocyclic) are treated with anhydrous aluminium bromide in an inert solvent, the resulting complex then being decomposed by a hydroxylic solvent to give the corresponding heterocyclic thiol.  The Aryl group may be phenyl or naphthyl and may be substituted, e.g. by methyl, ethyl, nitro or halogen.  The process is particularly suitable with compounds where the heterocyclic ring contains one or more nitrogen, sulphur or oxygen atoms, e.g. derivatives of uracil, thiazole, oxazole, imidazole, pyrazole, triazole or pyridine.  The inert solvent may be benzene, toluene, carbon disulphide or carbon tetrachloride.  The hydroxylic solvent may be water, aqueous methanol or ethanol, or a dilute mineral acid. In the examples the following are prepared by fission of their benzyl thioethers: 5-iodo-2-thiouracil, 2-mercapto-benzthiazole, 5-chloro-2-thiouracil, 2-mercapto-benzoxazole and 2-mercapto-benzimidazole; also 5 - iodo - 2 - thiouracil from its 1 - menaphthyl and p-methylbenzyl thioethers. 5-Chloro-2-benzylthio-uracil is prepared by reacting thiouracil with benzyl chloride and chlorinating the product. 2-Benzylthio-benzoxazole is made from 2-chloro-benzoxazole and sodium benzylmercaptide or from mercaptobenzoxazole and benzyl chloride.  5 - Iodo - 2 - (1 - menaphthylthio) - uracil is obtained from thiouracil and menaphthyl chloride, the product being iodinated.
Patent GB-529759-A (GB)
Title: Improvements in or relating to driving devices for machines for the household and kitchen
IPC: A47J43/08
Filed: 1939-06-07
Abstract: 529,759. Motors. SHEVLIN, J. T. (Alexanderwerke A. von der Nahmer Akt.-Ges.) June 7, 1939, No. 16739. [Class 35] A combined motor and reduction gear unit for driving household machines is mounted in a two-part casing of pressed material by means of a vibrationdamping fillet, the hub of the fillet where it projects through the casing being enclosed in a resilient sleeve; the casing also includes a loaded plate to steady it. In the arrangement shown the body 4 of the motor and reduction gear is provided with ribs 5 engaging rubber fillets 6 in grooves in the parts 1, 2 of the casing. The hub 8 is enclosed in a resilient sleeve 7. A loaded plate 9 fits into grooves 10 in the walls of the casing and may carry the cable securing means, safety devices and switch ; it may also be formed with cooling- ribs and ventilating openings.
Patent GB-610312-A (GB)
Title: Automatic valve for pressure fluid systems
IPC: G05D16/18
Filed: 1944-09-04
Abstract: 610,312. Fluid-pressure servomotors. SAUNDERS VALVE CO., Ltd., and SUTTON, F. Sept. 4, 1944, No. 16840. [Class 135] A diaphragm valve for controlling the supply of one fluid, such as compressed air to a pneumatic tool, is controlled by the pressure of another fluid, such as the water supply to the tool for removing the detritus resulting from the action of the tool, so that in the event of the water supply failing the air supply is cut off to stop the operation. The valve diaphragm 5 co-operates with a weir 6 extending across the air supply channel 2, 3 and is loaded to open by a spring 10. The water pressure acts upon a diaphragm 25 through a connection 27 to normally maintain a valve member 23 seated on a supply passage 19 from the air channel, but in the event of the water pressure failing, a spring 24 opens this valve to admit the air pressure through a passage 18 into a chamber 13 to act upon a diaphragm 11 to close the valve 5. The diaphragm chamber 13 is normally open to exhaust through a passage 20 in the valve stem 14 which is closed by a gland washer 15 when valve 23 is opened. The Provisional Specification refers to Specifications 516,569, 559,679 and 562,084.
Patent GB-896161-A (GB)
Title: Ignition systems
Inventor: LANE GEOFFREY
IPC: H02M3/338
Filed: 1959-05-19
Abstract: 896,161. Ignition systems. ROTAX Ltd. May 16, 1960 [May 19, 1959], No. 16862/59. Class 7(4). An ignition system for starting jet engines, gas turbines, furnaces or the like comprises first and second input terminals 3, 5 adapted for connection to a source of direct or rectified alternating current, an induction coil including an iron or other suitable core 1 which will not become saturated in use, a primary winding 2 mounted on the core and having its one end connected to the first terminal 3, a control winding 6 mounted on the core and having its one end connected to the second terminal 5 a transistor 4 having its emitter terminal connected to the second terminal and its collector and base terminals connected to the other ends of the primary and control windings respectively a resistor 8 connected between the base terminal of the transistor and the said other end of the primary winding, a secondary winding 10 mounted on the core, a capacitor 11 connected to the ends of the secondary winding through at least one rectifier but preferably a number of rectifiers 12, a discharge gap 15 adapted to pass current only when the voltage across it exceeds a predetermined value and a pair of output terminals adapted for connection to a sparking plug 17 or the like and connected across the capacitor through the gap. The capacitor 9 could be connected directly across the primary winding or could be replaced by a diode connected across the primary winding. The transistor may be of the PNP or NPN type.
Patent GB-204109-A (GB)
Title: Improvements in or relating to automatic electric current regulators
IPC: H01F38/08
Filed: 1922-06-19
Abstract: 204,109. Davies, W. Langdon-, and Soames, A. June 19, 1922. Regulating transformers.-An automatic regulator comprises a magnetic core having mutually inductive windings, a member which moves in a leakage path to vary the inductive effect of the windings and two stops one or both of which are adjustable to define the limiting positions of the movable member in order that the volt-ampere characteristic curve of the regulator may lie between two definite volt-ampere characteristic curves. A closed magnetic core A, Fig. 1, is provided with a primary winding B, a secondary winding C, and a pivoted leakage member A rotated by the magnetic field against the action of a spring F. The movement of the member A<1> is controlled by a dash-pot G and its limiting positions are determined by adjustable stops D, D<1>. In a modification the inside surfaces of the core A are plane and the member A<1> is shaped to move within the core. In the modification shown in Fig. 4 the leakage member A<2> is pivoted to an extension A<3> of one limb of the core A and its limiting positions are determined by stops D<2>. D<3>. In a further modification fhe leakage member is given a rectilinear movement.
Patent GB-418073-A (GB)
Title: Improvements in bearings
IPC: F16C27/06
Filed: 1933-06-14
Abstract: 418,073. Pivots. DUNLOP RUBBER CO., Ltd., 32, Osnaburgh Street, London, and SADLER, S., Fort Dunlop, Birmingham. June 14, 1933, No. 16949. [Class 65 (ii).] A cushioning element between the relatively rotatable parts 5, 6 of a bearing comprises a body 1 of yieldable material such as rubber the opposite faces of which are bonded to bearing plates 2, 3 of relatively inextensible material such as metal, or vulcanized fabric or fibre, the unloaded surfaces 4 of the body 1 being concave so that expansion into the spaces 7 may take place on the application of a load. The bonding may be carried out by the processes described in Specifications 343,531 and 348,303, [both in Group V], and may be aided by grooves &c. in the plates 2, 3. In a footstep bearing the parts 1, 2, 3 are circular, but in a pivotal bearing suitable for railway bogies, these parts are annular as shown in Fig. 2 so that a king pin may pass through the hole 10. Excessive lateral play is prevented by the interfitting flanges 13 and a clearance x permits vertical play. According to the Provisional Specification, the cushioning element may be of segmental or tubular form.
Patent GB-126570-A (GB)
Title: Improvements in Safety Appliances for Mine Cages, Hoists and the like.
Inventor: PRATT FRANK
IPC: B66B5/24
Filed: 1918-10-17
Abstract: 126,570. Pratt, F. Oct. 17, 1918. Catch gear of mine-cage type.-The slidable rod G on the mine cage, which is pulled down by a spring to apply the gripping-devices F to the guideropes E when the hoisting-ropes break, is maintained in its raised or inoperative position, when required, by slipping a hasp L on it over a staple M on the cage.
Patent GB-1305642-A (GB)
IPC: C03C1/00
Filed: 1970-04-09
Abstract: 1305642 Artificial magmatic rock TATABANYAI SZENBANYAK 9 April 1970 [17 April 1969] 16989/70 Headings C1J and C1K An artificial magmatic rock is composed of 45-60% by weight SiO 2 , 15-40% by weight of trivalent metal oxides, at least 40% by weight said trivalent oxides being Fe 2 O 3 , 10-20% by weight of divalent oxides and 1-5% by weight alkaline oxides, said composition being predominantly in the form of crystal associations, having a size of 2-20 Á, said crystals having a crystallization temperature range of 1200-900‹ C. and said crystal associations consisting essentially of 55-75% by weight labradorite-feldspar composed of albite 30-40  anortite 60-70,  5-15% by weight of monoclinic pyroxene, 1-10% by weight of rhombic pyroxene (hypersthene) containing magnesium- 5-25% by weight of oxides, predominantly having a spinel structure and trivalent metal oxides predominantly comprising Fe 2 O 3 . The rock is made by melting raw materials, allowing the melt to stand at 1500-1350‹ C., casting at 1350-1200‹ C. after the removal of gases, crystallizing the cast melt at 1200-900‹ C. for 0À5-4 hours with a constant or decreasing temperature gradient and thereafter cooling the crystallized melt at a rate of 20-80‹ C. per hour. Suitable raw materials are slag from the burning of stone coal (caustobiolite), fly ash and waste colliery stock piles together with additives to decrease the melting point, viscosity and crystallization temperature and to adjust the composition, e.g. fluorine chlorine and/or carbonate containing components can be added to decrease the melting point of raw materials rich in alumina. Numerous suitable additives are listed, in the examples the additives used are bauxite, magnesium carbonate, limestone, and sodium carbonate. The additives can be added to the melt or solid raw material or mixed with coal to be burnt.
Patent GB-129886-A (GB)
Title: Improvements in Tool Holders.
Inventor: DAVEY ERNEST NATHANIEL
IPC: B23B27/16
Filed: 1918-10-18
Abstract: 129,886. Davey, E. N. Oct. 18, 1918. Tool-holders.-In a tool-holder having two sections 15, 16 with channels 21, 22, to carry the tool 23, the upper channel 21 is made shallower toward the front end 24 of the holder, so that the tool is gripped at that part. The parts 15, 16 may be made in one piece bent over at 23<a>, or in two parts riveted or welded together, and may be formed of steel, or of malleable or cast iron for light work. The parts 15, 16 are separated by slots 20 for the greater part of their length, to enable the tool-post screw 13 to spring them together to grip the tool. The channels 21, 22, may run diagonally for right or left handed tools, or longitudinally, as shown in Fig. 1, in which case a hole 17 may be provided for a wire to force out the tool if necessary. In some cases, the channels 15, 16, may be formed as recesses in one side of the sections 15, 16.
Patent GB-1480973-A (GB)
Title: Thermosetting acrylic emulsions
IPC: C08F220/00
Filed: 1975-04-24
Abstract: 1480973 Thermosetting acrylic emulsions CIBA-GEIGY AG 24 April 1975 [13 May 1974] 17050/75 Headings C3P and C3R A thermosetting acrylic emulsion comprises water having dispersed therein an emulsion copolymer of monoethylenic monomers at least 65% by weight of which are monofunctional acrylic monomers in which the ethylenic group is terminally positioned and is in 2,3-position to a carbon atom which carries at least one atom other than carbon or hydrogen, and 0À2-15% by weight of polyfunctional monomers, at least one-third of which are an N-methylol derivative, or C 1 -C 8  alcohol ether thereof, of an allyl or methallyl carbamate of formula wherein R 1  is H or CH 3 , R 2  is C 2 -C 4  alkylene, n is 0 or an integer of 1-10. A preferred emulsion copolymer consisting of (i) at least 65% by weight of C 1 -C 8  alcohol esters of acrylic or methacrylic acids, (ii) 0À5-10% by weight of polyfunctional monomers, at least one-third of which are an N-methylol derivative, or C 1 -C 8  alcohol ether thereof of allyl carbamate or methallylcarbamate; and the balance being selected from acrylonitrile, styrene, vinyl toluene, vinyl acetate, and vinylidene chloride, the copolymer having a Tg (glass transition temperature) below 20 C. The emulsions may also comprise aminoplasts. In the examples, copolymers are obtained by at least partial subjection to an adiabatic exotherm in the presence of emulsifiers and freeradical initiators from (2)-(4) N-methylol allyl carbamate / itaconic acid / acrylonitrile / nbutyl acrylate; (5) as (2)-(4) wherein the propyl ether of the N-methylol allyl carbamate is used. A butylated melamine/formaldehyde resin is added to the emulsion of Example 4.
Patent GB-831787-A (GB)
Title: Production of solid polyethylenes
IPC: C08F10/00
Filed: 1956-06-01
Abstract: Gaseous ethylene is polymerized in the presence of an organo-metallic catalyst formed by adding a solution of an alkyl or aryl halide to metallic sodium finely dispersed in an inert liquid at about - 10 DEG C. and adding a heavy metal chloride activator in the same solvent to the reaction product at a higher temperature whereby a solution or suspension containing about 1% of catalyst is obtained, the ethylene being fed to the solution whilst it is agitated at 20 DEG  to 100 DEG C.  A benzene fraction of boiling-point above 115 DEG  C. is the preferred inert liquid, sodium amyl the catalyst and titanium tetrachloride the activator.