baber/WOPTO huggingface dataset:
Patent GB-1040679-A (GB)
Title: The regulation of synchronous generators
IPC: H02P9/30
Filed: 1965-06-25
Abstract: 1,040,679. Automatic voltage control. SIEMENS-SCHUCKERTWERKE A. G. June 25, 1965 [June 2 7, 1964], No. 27170/65. Heading G3R. The output voltage of an alternator 2 is maintained constant by controlling the firing of a thyristor 12 which is connected across part of the rectifier 7 supplying the field winding 6 of the alternator so that the field current is varied in dependence upon output voltage variations as detected by a circuit including a transformer 16, a rectifier 19 and a reference Zener diode 20; the amplified error voltage appearing at terminal 21 is applied to a circuit 15 which includes a control transistor 25 and a unijunction transistor 29 and which supplies the firing pulses for thyristor 12. The rectifier 7 is supplied from the output of the alternator 2 by way of a transformer 8 having one primary winding 10 connected to a current transformer 11 so that the excitation current has a loaddependent component to effect compounding. The arrangement is such that the thyristor 12 which receives a pulsating unidirectional voltage is fired earlier in the case of a relatively large error signal than in the case of a smaller error signal, whereby the field current is automatically varied to counteract output voltage variations. Excessively high values of excitation current which may arise under short circuit may be prevented by connecting a spark gap across thyristor 12 (Fig. 2, not shown).
Patent GB-602631-A (GB)
Title: Improvements in apparatus for the measurement of impedance at high frequencies
IPC: G01R27/02
Filed: 1945-10-17
Abstract: 602,631. Impedance measurements. GENERAL ELECTRIC CO., Ltd., and BIGGS. A. J. Oct. 17, 1945, No. 27182. [Class 37] Apparatus for the measurement of impedance at high frequencies comprises a high frequency oscillation generator, two attenuating networks connected in parallel. across the output terminals of the generator, in one of which networks the element whose impedance is to be measured is adapted to be connected and the other of which is of known variable attenuation, a thermionic amplifier, an amplitude modulation indicator in the output circuit of the amplifier, and changeover switch means adapted to operate automatically at a relatively low frequency and to connect the outputs of the attenuating networks alternately to the input of the amplifier. A high frequency generator 1 has connected across its output terminals 5, 6 the element Z1, for example, a quartz crystal, whose impedance Z is to be measured, in series with a resistor R1 of known resistance R. Also across the output terminals in series are condensers C1, C7 of known capacitances C1<1>, C7<1>, of which C7 is variable. A thermionic amplifier 2 and valves V1, V2 are connected as shown, the output terminals of the amplifier 2 being connected to a modulation indicator 3, such as a " magic eye," cathode ray tube, or valve voltmeter. The output terminals of a 50 c.p.s. square wave generator 4 are connected to the inputs of the valves V1, V2 so that the valves are fed in opposite phase with a switching oscillation which renders them alternately blocking and conducting. The variable condenser C7 is adjusted until the modulation indicator 3 indicates a minimum of modulation ; the attenuation C1<1>/(C1<1>+C7<1>) is then the attenuation R/(Z+R) of the network containing the element Z1, the impedance Z of which can be calculated from the known values C1<1>, C7', R. The condenser C7 may be calibrated in terms of the impedance Z. The oscillation generator 1 may be of variable frequency so that the impedance of the element Z1 may be measured at different frequencies, particularly at' the resonant frequency. In a multi-range instrument ganged switches are arranged to change the values of the resistance R1 and the condenser C1 simultaneously.
Patent GB-917402-A (GB)
Title: Process for the recovery and/or concentration of uranium and melt containing uranium
IPC: C22B60/02
Filed: 1959-08-10
Abstract: U is purified by melting it with Al and Mg and separating the resultant precipitate of an intermetallic compound of U and Al from the molten Mg-Al alloy.  The starting material, which is preferably an alloy or mixture of U and Al, is fused and Mg added. The melt is allowed to cool and held at within 200 DEG  C. of the freezing point of the Mg-Al melt to allow precipitation of the U-Al intermetallic compound which is then separated from the melt by filtration in a suitably-designed furnace (see Group XII). Alternatively the melt is allowed to settle and solidify and the portion containing the U-Al compound cut from the remainder of the casting.  The process may be repeated using the precipitate as starting material with or without further Al and the precipitate may be washed with molten Mg until the Al has been wholly or partly removed.  The remaining Mg is then distilled off. U-compounds may be included in the starting material and their reduction effected by the Mg and/or Al added in the process.
Patent GB-603312-A (GB)
Title: Improvements in and relating to filters for air and gases
IPC: B01D46/52
Filed: 1945-10-18
Abstract: 603,312. Air filters. AIR-MAZE (GREAT BRITAIN), Ltd. Oct. 18, 1945, No. 27330. Convention date, June 22. [Class 8 (ii)] A filter for air and gases is made by first corrugating along lines 11, Fig. 5, a sheet of mesh material 10, then folding the corrugated sheet into zig-zag form on parallel fold lines 12 making a substantial angle with the lines 11, pressing the folds together until the corrugations in adjacent folds touch, and framing the compacted folded material in an open-ended frame 14, Fig. 2, so as'to leave the peaks of the folds exposed for the admission at B and exit at C of the gaseous stream. Part of the inflowing gas will enter the filter unopposed, through triangular openings 13 between the peaks of the folds and will traverse passages formed by the parallel corrugations, which passages, as shown in Fig. 3, cross those formed in the adjacent fold to create turbulence and promote deposition of dust in the meshes of the material before the gas traverses one thickness of material to leave the filter at C. The remainder of the inflowing air traverses one thickness of mesh material at the peaks, and then traverses passages formed by the parallel corrugations. The mesh material may be coated with a viscous material.
Patent GB-1368199-A (GB)
Title: Gas flow control devices
IPC: F23Q9/14
Filed: 1972-06-12
Abstract: 1368199 Gas burner controls SOCITALIANA TECNOMECCANICA "LA PRECISA" DI DR P & G DE STEFANI SAS 12 June 1972 [15 July 1971] 27382/72 Heading F4T [Also in Division F2] A gas flow control device for gas burning appliances such as gas stores, instant water heaters and the like, comprises a casing 1 having gas inlet 6, one or more outlets 28, 28<SP>1</SP> to main burners, and an outlet 13 to a pilot burner 15. Slight rotation of knob 32 from position shown causes a cam 34 to move a lever 21 and thereby open valve 17 leading to outlet 13, whereafter depression of knod 32 causes the cam to engage a lever 35 and thereby open gas inlet valve 9. Thus the pilot burner can be ignited whereafter the valve 9 is kept open, after release of knob 32, by a thermoelectric safety device 11, 12. Further rotation of knob 32 brings cam protrusion 34a opposite a recess 5a, allowing spring 33 to lift the assembly of knob 32, cam 34 and rod 31 to thereby cause shoulder 39 on the rod to engage and lift valve 38 off its seat. This permits limited gas flow to the main burners via adjustably restricted bleed passages 25, 26 and outlets 28, 28<SP>1</SP>. Still further rotation of knob 32 screws a threaded shank 43 of a flanged sleeve 42 further into a thermostatic member 46, causing the flange to move valve 46 downwardly away from its seat 30 and thereby permit regulated gas flow to the main burners in dependence on the setting of the knob 32 and the temperature of the appliance as sensed by element 45.
Patent GB-812110-A (GB)
Title: Fabrics and yarns from ethylene terephthalate polymers
IPC: D01F6/62
Filed: 1957-08-30
Abstract: <PICT:0812110/IV (a)/1> <PICT:0812110/IV (a)/2> A polyethylene terephthalate filament (as defined below) has sharply defined alternate smaller and larger denier segments, the smaller denier segments being from about 0.1 to about 1.5 inches long, the larger denier segments from about 0.015 to about 0.15 inch long, and the smaller denier segments being longer than the larger denier segments. The term "polyethylene terephthalate" is taken to include copolyesters containing residues of other dicarboxylic acids, e.g. sebacic, isophthalic or sodium sulphoisophthalic acid, or other glycols, e.g. butylene glycol, in amounts up to about 20 mol. per cent, and includes also terephthalate polyesters of and glycol of the formula HO(CH2)nOH, where n is 2-10 inclusive.  Such filaments may be made by heating alternate sections of an undrawn, continuous filament, yarn and then drawing the non-uniformly heated yarn until the heated sections are from about 0.1 to about 1.5 inches long, and the unheated sections are from about 0.015 to about 0.15 inch long. In Fig. 1, the yarn 1 passes around guide pin 2 and between rotating rolls 3, 4 to a heated grooved roll 7, which heats alternate sections of yarn, and thence to roll 6, which has a higher peripheral speed than roll 5, thus stretching the heated sections of yarn, which, on leaving this roll, has the form shown in Fig. 2.  In the yarn produced the smaller denier segments of each filament may be substantially crystalline, and the ratio of the diameter of the larger denier segments to the diameter of the smaller denier segments may be between about 1.3 and about 2.0.  The preferred temperature range for the heat-treatment is between about 90 DEG  and 115 DEG  C. Filaments in which both smaller and larger denier segments are substantially crystalline may be produced by a subsequent heat-treatment which is preferably applied to a fabric woven or knitted from yarns of the above filaments.  In this process the fabric is heated to between about 90 DEG  and 200 DEG  C. for between about 30 mins. and 10 secs., as for example at 90 DEG  C. or above in water, or with dry heat between about 125 DEG  and 200 DEG  C.  The fabric so made has a dry crepe-like handle, and may be dyed at a temperature of at least 90 DEG  C. to give a fabric having a speckled appearance.
Patent GB-390077-A (GB)
Title: Expansible watch bracelet
IPC: A44C5/14
Filed: 1932-10-03
Abstract: 390,077. Bracelets ; attaching watches to wrist. SPEIDEL, F., 1, Kallhardstrasse, Pforzheim, Germany. Oct. 3, 1932, No. 27433. [Class 43.] A watch bracelet comprises a non-expanding band a attached to the loops of the watch by expansible elements each consisting of a hook f formed with side walls wherein slides a metal loop b secured to the end of the band a. One or more springs c are interposed between the apex of the loop and a transverse pin d secured to the side walls of the hook f.
Patent GB-264798-A (GB)
Title: Improved process for making tubes by electrolysis
IPC: C25D1/02
Filed: 1926-11-03
Abstract: 264,798. Bouchayer, A. J. Jan. 21, 1926, [Convention date]. Electrodes; iron, depositing.-In the deposition of iron tubes on a rotating cathode, the anodes consist of rough iron pigs B arranged slant-wise so as to cover in projection the whole of the cathode. According to the Specification as open to inspection under Sect. 91 (3) (a) the pigs may be embedded in cast-iron turnings in a container presenting a smooth surface to the cathode.. This subject-matter does not appear in the Specification as accepted.
Patent GB-371756-A (GB)
Title: Improvements in apparatus for cleaning and similarly treating articles by projected abrasive materials
IPC: B24C3/08
Filed: 1931-10-05
Abstract: 371,756. Endless band conveyers. FEENY, C. J., 73A, Queen Victoria Street, London.-(Mulvany, H. A. ; 780A, San-Luis Road, Berkeley, California, U.S.A.) Oct. 5, 1931, No. 27628. [Class 78 (i).] In an apparatus for conveying eggs or other articles past a sand-blast the conveyer bands 5, 6 pass over pulleys 3, 4, and each band comprises a central steel cable 19 surrounded by a plurality of short lengths of helical spring wire 20 separated by washers 22 and covered by separate rubber sleeves 21. The eggs are rotated while passing through the sanding zone, by rotation of the rubber sleeves and springs around the conveyer cable. For this purpose a number of rollers 30, 31, 32, arranged to impart rotation to parts of the conveyer, are driven by interengaging gears connected through a chain 36 to a shaft 41 which in turn is driven through reduction gears 42 from a motor 43. This motor is also connected by a belt 44 to one of the conveyer pulleys. The rollers 30 are of such length that the eggs which are placed on the conveyer at 50 are rotated after leaving the sanding zone until a point 40 is reached so that the eggs may be inspected after the cleaning operation. Lateral guide-bars 70 are also provided.
Patent GB-1383911-A (GB)
Title: Illuminated panels
IPC: F21V8/00
Filed: 1971-06-12
Abstract: 1383911 Illuminated panel JOSEPH LUCAS (INDUSTRIES) Ltd 24 May 1972 [12 June 1971] 27665/71 Heading G5C [Also in Division G2] A panel is illuminated by means of light guides 14 each of which terminates in an aperture 16 in a transparent sheet 10 and directs light on to a polished convex cylindrical surface in the periphery of the aperture, thereby refracting the light throughout the panel and illuminating the indicia carried on the underside of the sheet 10 and visible through the aperture in the mask 11. The light guide terminals 15, which are concealed by the mask 11, are located in an aperture 16 consisting of two circular holes joined by a neck portion with recesses in which locating flanges 15a on the terminal 15 fit.
Patent GB-937503-A (GB)
Title: Apparatus for handling building bricks and similarly shaped articles
IPC: B66F9/16
Filed: 1960-08-10
Abstract: 937,503. Fork lift trucks. A. T. VAN HUET. Aug. 10, 1960 [June 18, 1960], No. 27719/60. Class 78 (3). A brick fork 5 for a masted lift truck is supported by an arm 4 movable by a ram 7, 8 along a beam 3 which is mounted for lateral adjustment on the lifting carriage of the truck, the fork being connected to arm 4 by a pin-andslot coupling, and having grippers (not shown) which are extended into engagement with the lower bricks of a stack during initial upward movement of the carriage by a rope 15 attached to the fork and beam 3. The fork has a back frame covered with wire mesh (not shown), and side wings 14. Specification 799,470 is referred to.
Patent GB-279457-A (GB)
IPC: H04N7/06
Filed: 1927-10-19
Abstract: 279,457. British Thomson-Houston Co., Ltd., (Assignees of Alexanderson, E. F. TV.). Oct. 19, 1926, [Convention date]. Television apparatus; copying - telegraphs.- Four or more adjacent elements of a picture simultaneously affect an equal number of light-sensitive cells in a television transmitter, and a corresponding arrangement is adopted at the receiver, a single scanning device being used ir. each case. In the receiving apparatus shown in Fig. 3, signals corresponding to four adjacent elements of the transmitted picture are received by four aerials 26 which control four oscillagraphs 18 so as to vary the intensity of four light pencils which pass to the screen 12 by way of lenses 22, mutually inclined mirrors 16, and a common lens in the spiral series of lenses 14 which is carried by a rotating cylinder 13. The pencils therefore trace out four adjacent vertical lines of illumination 23, and as successive lenses 14 come into action successive bands each comprising four component lines of the picture are traced out. The arrangement at the transmitter (Fig. 1, not shown) is similar : four optical images of the picture are projected by lenses and by four mutually inclined mirrors upon four light-sensitive cells, so that each cell coincides with one of four adjacent picture elements. The pencils forming the four optical images all pass through a lens 14 and are traversed thereby. In modifications (Figs. 4 and 5, not shown) the spiral series of lenses 14 may be replaced by a series of plane mirrors inclined to the axis of the cylinders at slightly different angles. In the modified receiver shown in Fig. 6 seven adjacent light pencils proceeding from a constant source of illumination 40 pass through a polarizer 42 and between seven pairs of plates 48 in a Kerr cell 43, so that the planes of polarization of the pencils are rotarily displaced under the control of received signals applied through the leads 49. The pencils then pass through an analyzer 44 and are projected by a lens 45 and mutually inclined rotating mirrors 32 on to the screen 12. The advantages of the system are that strong illumination is obtained since several pencils are used simultaneously and large lenses can be used since the lenses can be rotated at a slower speed than usual. The invention is applicable to vibrating- mirror or other systems as well as to those employing rotating spirals; it is also applicable to copying, telegraphs, and the invisible parts of the spectrum may be utilized in the transmitter or in a photographic receiver. Wireless or line signals may be used.
Patent GB-888133-A (GB)
Title: Improvements in and relating to curing
Inventor: JOHNSTON CHRISTIAN WILLIAM
IPC: C08G59/34
Filed: 1960-08-12
Abstract: An epoxy butadiene resin is cured using an aliphatic polyhydric alcohol and an organic polycarboxylic anhydride.  The resin should preferably contain at least 5% epoxy oxygen and the amount of curing agent should be 0,5 to 4 equivalents per epoxy oxygen, the anhydride being present in excess equivalents over the alcohol.  Ethylene glycol, propylene glycol, 2,3-butanediol glycerol and cyclohexanediol are included amongst the specified alcohols while maleic, succinic, phthalic, pyromellitic and itaconic are in the list of anhydrides. Specification 799,719 is referred to.
Patent GB-1416856-A (GB)
Title: Fluid flow control
IPC: F16L55/027
Filed: 1974-06-24
Abstract: 1416856 Measuring fluid flow ALZA CORP 24 June 1974 27986/74 Heading G1R [Also in Division F2] In a fluid flow control a deformable conduit 11  of elastic material encloses a plurality of parallel linear elongate elastic fibres 15 disposed in axial parallel alignment with the conduit and a clamp (19), Fig. 1 (not shown), or a vertically movable wedge 27, located between pegs 29, 30 and vertically adjusted by a laterally movable wedge 31 compresses the conduit 11 and the fibres 15 to vary the flow through the conduit 11. The fibres 15 fill 50% to 95% of the bore of the conduit 11 and may have diameters between 0.04 to 0.4 times the inner diameter of the flow passageway. The fibres may be of rubber or plastics.
Patent GB-1153186-A (GB)
Title: Penicillanic Acid Derivatives
Inventor: NAITO TAKAYUKI
IPC: C07D499/76
Filed: 1966-06-22
Abstract: 1,153,186. Penicillanic acid derivatives; 5 - alkyl - 3 - arylisothiazole - 4 - carboxylic acids. BRISTOL-BANYU RESEARCH INSTITUTE Ltd. 22 June, 1966 [23 June, 1965], No. 28002/66. Headings C2A and C2C. Antibacterially active penicillanic acid derivatives have the Formula I wherein R<SP>1</SP> represents H, Cl, CF 3 ; R<SP>2</SP> is H, Cl, CF 3 , F, methylsulphonyl, NO 2 , C 1  to C 10  alkyl or C 1  to C 10  alkoxy; and R<SP>3</SP> is C 1  to C 10  alkyl. Pharmaceutically acceptable salts thereof include the alkali and alkaline earth metal, ammonium and amine salts e.g. N-ethylpiperidine salt. The penicillins are prepared by reacting 6-aminopenicillanic acid or a salt thereof with an acid chloride, or functional equivalent thereof, having the Formula II wherein R<SP>1</SP>, R<SP>2</SP> and R<SP>3</SP> have the above meanings. Typical compounds are sodium 6-[5-methyl-3- (2<SP>1</SP>,6<SP>1</SP> - dichlorophenyl) isothiazole - 4 - carboxamido] penicillanate, sodium 6 - [5- methyl - 3 - (2<SP>1</SP> - chlorophenyl) - isothiazole - 4- carboxamido] penicillanate and sodium [5- methyl - 3 - (2<SP>1</SP>,6<SP>1</SP> - di - trifluoromethyl - phenyl)- 4-carboxamido] penicillanate. 5 - Alkyl - 3 - arylisothiazole - 4 - carboxylic acids corresponding to the acid chlorides of Formula II above, are prepared by the following reaction schemes: (A) Alternatively, the compound III of scheme (A) may be converted to compound IV by the following steps Compound I of scheme (A) is treated with BuLi and RI to form which is treated with CuCn to form compound II of scheme A; wherein AR represents: and R<SP>1</SP> and R<SP>2</SP> have the above meanings. 2,-6 Dichlorobenzonitrile is prepared by Pharmaceutical compositions comprise a penicillin of Formula I above and a carrier. They may be used for the treatment of mastitis in cattle or as a nutritional supplement e.g. when mixed with an animal feed. Reference has been directed by the Comptroller to Specification 1,059,303.
Patent GB-933995-A (GB)
Title: Improvements in apparatus for electrophoresis
Inventor: SHANDON ERNEST ROBERT
IPC: G01N27/447
Filed: 1961-08-02
Abstract: 933,995. Electrophoretic apparatus. SHANDON SCIENTIFIC CO. Ltd. June 8, 1962 [Aug. 2, 1961], No. 28009/61. Class 41. An electrophoretic apparatus to demonstrate the movement of ions along a strip of permeable material, e.g. paper, under an electric potential consists of a circular dish 3 divided to form compartments by barriers 5, the end compartments 6 being filled with electrolyte, and provided with vertical electrodes 9 with platinized wire ends 9a. The electrodes are sheathed in insulation 8, and one is provided with a pair of arms 19 extending horizontally and at right angles to each other, the ends being joined by a horizontal glass rod 21 supporting the paper strip 22, the ends of which are immersed in the individual compartments 6. The enclosing wall 1 is of glass to observe the process.
Patent GB-874614-A (GB)
Title: Improvements in or relating to disc brakes
IPC: F16D65/18
Filed: 1957-09-05
Abstract: 874,614. Piston packing. REGIE NATIONALE DES USINES RENAULT. Sept. 5, 1957 [Nov. 15, 1956], No. 28063/57. Addition to 837,698. Class 122 (1). [Also in Group XXXIV] In a packing member for an hydraulic device for brakes, (Group XXXIV), a packing 95 for pistons 70, 71 is formed as shown in Fig. 5, with an outer and an inner peripheral lip engaging a cylinder bore and a ridge on the respective piston respectively. A rubber or like packing member 911 inserted in a groove in a slidable partition member 92 has an outer peripheral lip 93 and an axial groove 94 so arranged that fluid can flow into the chamber 81 but cannot escape therefrom.
Patent GB-1360892-A (GB)
Title: Lubricating oil additive
IPC: C10M159/22
Filed: 1972-06-15
Abstract: 1360892 Heated alkaline earth metal-modified formaldehyde - amine - alkylphenol condensate CHEVRON RESEARCH CO 15 June 1972 [18 June 1971 18 May 1972] 28172/72 Heading C3R [Also in Division C5] A lubricating oil is obtained by reaction of formaldehyde with a primary aliphatic amine and an alkylphenol to form a Mannich base, which is then reacted with an alkaline earth metal oxide or hydroxide and thereafter heated at 300-450‹ F. for 2-7 hours. The Mannich base may be obtained by heating the three components in an inert medium at 250- 310‹ F. and 20-40 psig. The reaction with the alkaline earth metal compound may be conducted in a mutual solvent at 200-330‹ F. The formaldehyde is preferably formaldehyde; the amine preferably has 1-5 C atoms; the alkyl group on the phenol preferably has 8-35 C atoms. The preferred ratio of phenol : amine : formaldehyde is 1 : 1-4 : 2-3À5. Ca(OH) 2  is the preferred metal base. An auxiliary diluent, preferably a lubricating oil, may be added to the Mannich base before reaction with the metal base. The final product is dissolved in a lubricating oil to give a concentrate containing 17-70 wt per cent solids or an oil for use containing 0À2-10 wt per cent solids.