baber/WOPTO huggingface dataset:
Patent GB-761640-A (GB)
Title: Converter for vacuum cleaners
IPC: A47L5/32
Filed: 1954-11-19
Abstract: 761,640. Suction cleaners. SINGER MANUFACTURING CO. Nov. 19, 1954 [Dec. 10, 1953], No. 33542/54. Class 8(1) A converter for attachment to the suction nozzle of a handle propelled type vacuum cleaner comprises a dished tray 23 bounded by a rectangular plane surface 24 adapted to surround the suction mouth of the cleaner and provided with locating lugs 39 and a spring 41 engagable with the inner edge of the suction mouth; a shaft ha,ving an operating handle 52 at one end and a loop 56 at the other is rotatably mounted in the opposite edge of the tray and on rotation the loop 56 may be brought into engagement with the inner edge of the suction mouth. The tray 23 is formed with two lobed depressions 27 which merge to a common outlet 29 having a hose connection 32. A supporting wheel 61 is provided on the.converter.
Patent GB-818896-A (GB)
Title: A new derivative of deserpidine and salts thereof and a process for their manufacture
Filed: 1955-11-23
Abstract: The invention comprises deserpidic acid lactone (and its salts) and the preparation thereof by treating deserpidic acid (see Specification 809,913) with an acid anhydride, especially acetic anhydride.  The product may be obtained as free base or a salt and one may be converted into the other; salts that may be prepared are the hydrohalides, sulphate, phosphates, nitrate, isethionate, toluenesulphonate, acetate, tartrate and citrate.  An example is given of the process.  Specification 809,912 also is referred to.
Patent GB-814459-A (GB)
Title: Expanded artificial filaments
Inventor: MALEWSKI ANDRZEJ
IPC: D01D5/247
Filed: 1955-11-24
Abstract: Filaments of thermoplastic materials, said materials having been formed by polymerization or condensation processes, are expanded by incorporating a "blowing agent" (as defined below) in the thermoplastic material, extruding, and expanding the resulting filaments by heat treatment.  A blowing agent is defined as a substance which decomposes on heating and evolves gases at a temperature at which the thermoplastic material is sufficiently fluid to allow bubble formation and expansion, but sufficiently cohesive to entrap the gas bubbles so formed.  Filaments may be wet or dry spun. In wet spinning, blowing agent decomposition and filament expansion may be effected in a hot zone through which the filaments pass after the coagulating bath.  In dry spinning, these stages may be effected in the heated spinning cell.  In an example, a 25 per cent by weight solution of chlorinated polyvinyl chloride in acetone, containing 1-8 per cent by weight of p,p1-oxy-bis-(benzene sulphonyl hydrazide), is wet-spun into water, and the resulting filaments are passed through a hot air chamber at about 140-180 DEG  C.  In another example, a 25 per cent by weight polyvinyl chloride solution in a 1 : 1 by volume acetone/carbon disulphide mixture, containing 1-8 per cent by weight of azodiisobutyric-dinitrile, is dry spun into a spinning cell through which passes hot air at 160-180 DEG  C.
Patent GB-959799-A (GB)
Title: Angular carboxylic lactam n-sulphonates and their preparation
IPC: C07J71/00
Filed: 1961-03-20
Abstract: The invention comprises a hydrochrysene derivative bearing the partial formula: <FORM:0959799/C2/1> wherein R1 represents an alkyl, aryl, or aralkyl group and R11 represents H, an alkyl or an alkanoyl group and a process for the preparation thereof by hydrolysing a hydrochrysene derivative bearing a nitrile group at 13-position and an oxo group at the 17-position with alkali metal hydroxide, alkylating the resulting amide of the partial formula: <FORM:0959799/C2/2> by alcohol-acid mixture to a lactam-ether compound of the partial formula: <FORM:0959799/C2/3> and sulphonating the compound by alkane sulphonyl halide in the presence of a base, e.g. alkali metals, alkali metal hydrides and alkali metal amides. Specifications 873,019, 915,892 and 936,892 also are referred to.
Patent GB-941728-A (GB)
Title: Electrical filter
IPC: H03H7/01
Filed: 1960-09-30
Abstract: 941,728. High-frequency filters. BIRD ELECTRONIC CORPORATION. Sept. 30, 1960 ]Oct. 2, 1959], No. 33724/60. Heading H1W. A filter for use in the 200-400 Mc/s range comprises a partitioned housing containing a number of coaxial line elements opening on different sides of the partitions, the elements being connected by a conductor formed with inductive portions. The filter circuit (Fig. 4) comprises half-section terminal portions A, two full-sections B adjusted to provide sharp cut-off and two constant -k sections C. The series-resonant shunt branches consist of quarter-wavelength coaxial lines 21-24, Figs. 4, 5, 7, laid parallel to each other in a metal cradle 64 and extending underneath metal partitions 56. The cradle constitutes a subassembly which is placed in the metal housing 6, Fig. 1, in such a manner that the open ends of the lines lie alternately in one or the other of two end compartments of the housing, the ends of the inner conductors of lines 21, 22 lying respectively adjacent a coaxial terminal 17 arranged on the side of the housing and a coaxial terminal 18 arranged on the base of the housing. The inductances 27, 31 are formed by helical deformations in a conductor 32 which extends between the centre conductors of the input and output terminals 17, 18. Intermediate inductance coils 27, 29 and 28, 31, the conductor 32 is formed with kinks 58 which embrace and are soldered to the ends of the inner conductors of lines 23, 24. Coil 30 is formed from a separate piece of wire and lies in the inner compartment of the filter, the ends of the other sections of the conductor 32 being brought into the inner compartment through the central terminals of two feed-through button capacitors 25, 26 arranged in the partitions 56. The lines 23, 24 each comprise an inductive air-filled portion 41, Fig. 9, terminating in a capacitative portion formed by a metal slug 47 surrounded by a dielectric cup 45. The lines 21, 22 consist of sections of conventional dielectric-filled coaxial transmission line.
Patent GB-955151-A (GB)
Title: Improvements in or relating to battery charging systems for vehicles
IPC: H02J7/02
Filed: 1960-10-03
Abstract: 955,151. Changing batteries at fixed stations. BARRETT ELECTRONICS CORPORATION. Oct. 3, 1960 [Oct. 1, 1959], No. 33796/60. Heading H2H. In a mechanical transport system, wherein a battery-powered vehicle 11 is guided optically, magnetically, or by other means, along a track 13 and is prevented from approaching too closely a preceding vehicle 11 by means of a signalling system, the battery is given a boosting charge each time it rests at a signal. At each signal 14 which may be of optical, magnetic, or other type, a sensing device 15 disconnects the battery from the driving motor when another vehicle 11 occupies the section ahead. As the vehicle 11 approaches a signal, a sensing means 18 detects a signal from a beacon 16 and operates a reversible motor advancing a set of contact carrying arms 24 which engage with conductor rails 26a-26d, rails 26a, 26b being energized from the battery to close a contactor connecting rails 26c, 26d to the charging supply. If the vehicle is stopped at a signal, a zero speed relay closes contacts completing the supply circuit to the battery. On cessation of the signal from 14, the driving motor is energized and contacts 25a-25d slide along rails 26a-26d and are retracted when the influence of the beacon 16 is lost.
Patent GB-908296-A (GB)
Title: Substituted benzoquinones and hydroquinones
IPC: C07C46/00
Filed: 1959-10-06
Abstract: The invention comprises the compounds of formula <FORM:0908296/IV (b)/1> and <FORM:0908296/IV (b)/2> wherein n is 1 to 28.  The benzoquinone compounds are prepared by reacting 2:3-dimethoxy-5-methyl-benzoquinone with a diacyl peroxide of formula <FORM:0908296/IV (b)/3> wherein n is 1 to 28 and the hydroquinone derivatives are obtained therefrom by treatment with a mild reducing agent.  In an example 2:3-dimethoxy-5-methylbenzoquinone is heated with dipalmitoyl peroxide in glacial acetic acid, the palmitic and acetic acids removed and the residue purified chromatographically to give 2:3-dimethoxy-5-methyl-6-pentadecyl-quinone which is reduced with sodium borohydride in ethanol to the corresponding hydroquinone. Further examples are specified.
Patent GB-491950-A (GB)
Title: Improvements in and relating to means for opening packages
IPC: B65B61/18
Filed: 1936-12-09
Abstract: 491,950. Wrapping; unpacking. BAHLSEN'S KEKSFABRIK AKT.-GES. Dec. 9, 1936, No. 33856. Void. Convention date, Dec. 9, 1935. Application for addition to 432,674. [Class 94 (i)] In the formation of packages with tearing strips as described ir the parent Specification the edges of a wrapper a are secured to form a tube of greater cross - sectior than the article b, and by the successive action of a folder c, plunger d, and folder e, the formation shown in Fig. 4 is achieved. The wrapping is then completed, and the fold f acts as a tearing strip to open the packet.
Patent GB-211997-A (GB)
Title: Improvements in steam generators
IPC: F22B13/02
Filed: 1922-12-13
Abstract: 211,997. Kermode, J. J. Dec. 13, 1922. Dampers for controlling superheaters. - A vertical boiler having cross water-tubes 3 in the combustion chamber is fitted with baffle plates 1 carried by metal strips or rods 1<a> secured to the plates and bent around convenient watertubes. Baffle plates are placed below and above the group of cross-tubes, and another baffle 5 may be placed above the superheater 6 at the top of the combustion chamber. The baffle plates may be perforated, and a sliding plate operated by a rod extending through the casing to the outside of the boiler may be fitted over each perforated plate.
Patent GB-303787-A (GB)
Title: An inverting lens system for telescopes
IPC: G02B23/00
Filed: 1928-11-21
Abstract: 303,787. Soc. GÚnÚrale d'Optique, Soc. Anon. des Anciens Etablissements Huet et Cie JumeUes Flammarion. Jan. 9, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Telescope systems.-The inverting lens system of a telescope consists of three simple non- cemented lenses a - - c separated by air spaces, in place of the usual inverting system. The object is to obtain better correction together with a shorter overall length. The length of the inverting system is less than half its focal length and the smallest radius of curvature of the component lenses is greater than one-third of the focal length of the invertir.g system. Numerical data are given in the Specification.
Patent GB-1476006-A (GB)
Title: Apparatus and method for the discrimination of fluorescent par ticles
IPC: G01N21/64
Filed: 1975-08-18
Abstract: 1476006 Substance discrimination by fluorescence BLOCK ENG Inc 18 Aug 1975 [21 Aug 1974] 34253/75 Heading G1A A method of distinguishing two substances with different fluorescent decay lifetimes comprises irradiating them with radiation to stimulate fluorescence, reducing the radiation and measuring the intensity of fluorescence after a delay allowing decay. Apparatus for this comprises a source 22, of radiation to stimulate fluorescence, means 24 for modulating its intensity and means 30, 34, 38 for measuring the intensity of fluorescence in delayed synchronism with the modulation. Sample 20 is a liquid medium with particles with fluorochrome dye bound to them and with unbound fluorochrome dye. Source 22, which illuminates it may be a laser emitting short pulses due to an oscillator and mode locker or a carbon arc with interference filter and a Pockels device. Its energy is unsufficient to cause 'bleaching'. Interference filter 26 removes source light and stray radiation. Optics 28 concentrate the fluorescence on to photo-multiplier 30 F.E.T. or diode gate 34 is timed to open each time the fluorescence of the unbound fluorochrome has decayed by 1/e. Alternatively detector 30 or display 40 may be gated on or off. If the bound substance is an energy transfer fluorescing material, the gate is opened when the fluorescence of this material reaches its maximum. Display 40 may be digital or an oscilloscope.
Patent GB-872032-A (GB)
Title: Improvements in or relating to steroids and the manufacture thereof
IPC: C07J75/00
Filed: 1959-10-09
Abstract: The invention comprises a compound having the formula: <FORM:0872032/IV (b)/1> wherein X is the carbonyl radical or the b -hydroxymethylene radical, R and R1 are hydrogen or the acyl radical of a hydrocarbon carboxylic acid containing from 1-12 carbon atoms, inclusive, and wherein, when R is acyl, R1 is acyl and a process for the preparation thereof which comprises reacting an 11-oxygenated 21-acyloxy-4,17(20)-pregnadiene-3-one having the formula: <FORM:0872032/IV (b)/2> with selenium dioxide to produce the corresponding 16-hydroxy compound.  Subsequent esterification gives the corresponding 16,21-diacyloxy - 4,17(20) - pregnadiene - 3,11 - dione. Illustrative products are 11b ,16,21-trihydroxy-4,17(20)-pregnadien-3-one, 11b ,16-dihydroxy-21 - acetoxy - 4,17(20) - pregnadien - 3 - one, 11b  - hydroxy - 16,21 - diacetoxy - 4,17(20) - pregnadien-3-one, 16,21-dihydroxy-4,17(20)-pregnadien-3,11-dione, 16-hydroxy-21-acetoxy-4,17(20)-pregnadiene-3,11-dione and 16,21-diacetoxy-4,17(20)-pregnadien-3,11-dione.  Specification 749,199 is referred to.ALSO:Pharmaceutical compositions comprising a compound of the formula  <FORM:0872032/VI/1> wherein X is the carbonyl radical or the b -hydroxymethylene radical, R and R1 are hydrogen or the acyl radical of a hydrocarbon carboxylic acid containing from 1-12 carbon atoms, inclusive, and wherein, when R is acyl, R1 is acyl, and a pharmaceutical diluent are administered orally as tablets, powders, pills, capsules, solutions, emulsions, suspensions, syrups, or elixirs.  Specification 749,199 is referred to.
Patent GB-521845-A (GB)
Title: Improvements relating to heat exchange apparatus
IPC: F22D1/02
Filed: 1938-11-25
Abstract: 521,845. Straight - tube heat-exchangers. HARDY, L. E., and SENIOR ECONOMISERS, Ltd. Nov. 25, 1938, No. 34401. [Class 64 (iii) ] The flow of furnace gases or other heating medium between passes f, e of a nest of tubes a for heating feedwater or air is promoted by a fan p of the propeller type.
Patent GB-176487-A (GB)
Title: Improvements relating to internal combustion engines more especially applicable for use on motor vehicles
IPC: F02B1/00
Filed: 1920-12-06
Abstract: 176,487. Fisher, W. Dec. 6, 1920. Rotary cylindrical valves; valve spindles.-In a four-stroke internal-combustion engine in which the exhaust from one cylinder a is used to act on a second piston b<1> during two strokes of the cycle, the piston b<1> and its cylinder b being used as an air-pump during the other two strokes, the cylinder b may, when desired, be used as a compressed-air engine by means of air supplied from a reservoir through a rotary distributing-valve l. A rotary disc valve c between the two cylinders is formed with inlet ports d, Fig. 7, and exhaust ports e. During the suction stroke of the piston a' the charge passes through ports d, d<1>, Figs. 3 and 7, into the cylinder a, and the exhaust gases are driven out from the cylinder b through ports e, f<1>. On the compression stroke, air enters the latter cylinder through ports e, g, this air being compressed into a reservoir or supplied to a compressor through ports e, g<1> during the explosion stroke. On the exhaust stroke, the combustion products pass through ports e, f into the cylinder b. The valve c is rotated at one-fourth crankshaft speed by means of teeth around its edge engaging with a pinion c' on a vertical shaft c<2> driven by bevel or worm gear. In multicylinder engines, the valves may be geared together as shown in Fig. 7. The valve l, Figs. 1 and 4, for supplying compressed air to the cylinder b is rotatably mounted on a shaft j<1> within a casing j having ports k<1>, k<2> communicating with a compressed-air re,rvoir k, ports g, g<1> communicating with the ports g, g<1> in the cylinder, and ports l<6> opening to the atmosphere. The valve l is provided with an annular groove l<1>, four peripheral ports l<2>, and end ports l<3>, and is formed with clutch teeth l<1> adapted to engage similar teeth upon a wheel m driven at one-eighth crank-shaft speed by a wheel m<1> gearing with the shaft c<2>. The port k<2> is fitted with a non-return valve, and the port k<1> is controlled by a sliding rod n formed with a reduced portion n<1> for operating a mushroom valve. When the valve l is moved by sliding the shaft j<1> by hand so that the groove l<1> registers with the port g<1>, air from the cylinder b is compressed into the tank k past the valve of the port k<2>. When the valve is moved into gear with the wheel m, the rod n is simultaneously moved to open the port k<1>, through which compressed air passes and is delivered at the required strokes to the cylinder b by means of ports l<2>, g. A single valve l may serve all the cylinders of a multicylinder engine.
Patent GB-640697-A (GB)
Title: Improvements in or relating to velocity-modulated electron discharge devices
IPC: H01J25/10
Filed: 1945-12-20
Abstract: 640,697. Velocity-modulated tubes. PHILIPS LAMPS, Ltd. Dec. 20, 1945, No. 34493. Convention date, Dec. 2, 1940. [Class 39 (i)] A tube of the type in which the electron beam from cathode 3 and anode 4 passes a first time through a control electrode system 6, 7, 8 in which it is velocity-modulated, is reflected by a brake-field electrode 10 becoming bunched, and passes a second time through the control electrode system to deliver energy to it, is provided with a second brake field electrode 5 between the cathode and control electrode system so that the electrons are passed back into the control electrode system a third, fourth, &c. time so as to deliver more energy to it. The control electrode system. comprises a half-wave control cylinder between two apertured boundary plates 6, 8. In a modification, Fig. 2, (not shown), there are two -cylinders connected in antiphase. A magnetic focusing field may be employed to increase the number of passages of the electrons before they are collected. The beam may be modulated by a grid in front of the cathode. The tuned output circuit 9 may be a Lecher line or an outer conductor surrounding the cylinders and joining their far ends. Specification 640,747 is referred to. The subjectmatter is identical with Figs. 1 and 2 of Specification 558,143. The Specification as open to inspection under Sect. 91 comprises also the subject-matter of Figs. 3 and 4 of Specification 558,143. This subject-matter does not appear in the Specification as accepted.
Patent GB-1367226-A (GB)
Title: Zig-zag paper strip filter element
IPC: B01D29/11
Filed: 1972-07-25
Abstract: 1367226 Pleated filter element PUROLATOR FILTER GmbH 25 July 1972 [26 July 1971] 34645/72 Headings BID and BIT A filter element comprises a piece of pleated paper impregnated with thermoplastic phenol resin, the peripheral or end portion of the pleated paper being compressed and heated to form an integral frame or end cap. During compression and heating paper pleats are pressed together, and the resin melts and subsequently solidifies. Fig. 1 (not shown) illustrates manufacture of flat pleated elements, wherein the peripheral frames are formed by a heated stamping press (8). The press elements heat the paper to between 100 and 200‹C pressure being reduced somewhat thereafter and maintained constant until the resin hardens. An initially rectangular piece of pleated paper may be bent to. flat annular form (Figs. 6, 7, not shown) or cylindrical form (Fig. 8) and peripheral frames or end caps formed by stamping or by heated rollers. Frames or end caps may extend in the medial plane of the element or in the plane of its fold lines or normally thereto. Sealing strips 45, 46 in Fig. 10 may be formed by profiling the frame 44 in manufacture or vulcanised thereto afterwards. Elements may be reinforced by intermediate ribs 83, 84 formed in the same way and at the same time as the frame 80. In Figs. 11, 12 (not shown) a wire mesh layer reinforces the element and is pressed into its peripheral frame. A plurality of elements may be connected in parallel by bonding their frames together (Fig. 9 not shown).
Patent GB-485738-A (GB)
Title: Improvements in moving stairways
IPC: B66B23/14
Filed: 1937-12-15
Abstract: 485,738. Escalators. WAYGOODOTIS, Ltd. Dec. 15, 1937, No. 34701. Convention date, March 30. [Class 78 (i)] In escalators means is provided for maintaining the trailer wheels in contact with the track. Each step has an extra wheel 45 which runs on a track 46 disposed between the tracks 40 for the trailer wheels 23. The shaft 48 of the wheel 45 is carried by an arm 50 of a lever 51 which is pivoted at 52 to an angle iron 54 extending between the step brackets 18. A spring 47 extends between the arm 55 of the lever and an angle bracket 59 secured to the angle iron 54. The trailer wheels 23 are mounted at the lower ends of the brackets 18, and are kept in contact with their tracks by the action of the spring 47.
Patent GB-929282-A (GB)
Title: Improvements in or relating to thermoelectric devices
Inventor: CURTIS PETER BRYAN
IPC: H01L35/08
Filed: 1958-10-29
Abstract: 929,282. Thermo-couples. GENERAL ELECTRIC CO. Ltd. Oct. 23, 1959 [Oct. 29, 1958], No. 34701/58. Class 37. In a thermo-electric device comprising elements 3, 4 of semi-conductor material, as shown, P- and N-type bismuth telluride, separated by layers 6 of resin and electrically connected in series by means of U-shaped or, as shown, L-shaped ferrous metal connectors 9, 10, to form hot and cold junctions respectively, heat exchange members 2, 11 of low melting point metal, e.g. Wood's metal, are cast on to the connectors, and are electrically, but not thermally, insulated from the rest of the assembly by a film of insulating material, e.g. "Araldite " (Registered Trade Mark). In a modification, the heat exchange members are composed of machined fin assemblies of copper or aluminium and castings of low melting point alloy. Specifications 798,882 and 929,281 are referred to.
Patent GB-301224-A (GB)
Title: Improvements in and relating to the construction of chimneys, stacks, fireplaces, chimney breasts and like parts of buildings
IPC: E04F19/00
Filed: 1927-12-23
Abstract: 301,224. Roberts, E. W., and Temple, J. E. Dec. 23, 1927. Building-blocks; special shapes of. - Flues are formed of grooved blocks 1, Fig. 12, which are superposed in pairs so that the grooves provide the flue passage as shown in Fig. 9. The cross-section of the blocks may be of any desired form.
Patent GB-520213-A (GB)
Title: Improvements in and relating to rotary cutting tools
IPC: B23B51/02
Filed: 1938-11-30
Abstract: 520,213. Drills; milling-cutters &c. KNOWLSON, R. F. Nov. 30, 1938, No. 34877. [Class 83 (iii)] A rotary end-cutting tool such as a drill, end-mill &c. has carbide tip elements 4 extending over the peripheral and intermediate zones 3b whilst the cutting edges 3a adjacent the axis are composed of hardened and tempered steel. The tips 4 are fixed by brazing &c. in slots in the ribs 2, which may have a helix angle varying between wide limits such as 15 to 25 degrees, and extend for some axial distance along the tool to allow for repeated re-grinding on the end face. Clearance slots 7, 7a for the escape of swarf are provided in the steel cutting edges 3a or at their junction with the carbide edges and are arcuate and at different distances from the axis as shown in Fig. 4. Further slots may be provided in the carbide edges.