baber/WOPTO huggingface dataset:
Patent GB-142571-A (GB)
Title: Improved method and systems for producing and selectively transmitting harmonics of electric oscillations
IPC: H03B19/10
Filed: 1919-02-12
Abstract: 142,571. Western Electric Co., (Western Electric Co.) Feb. 12, 1919. Frequency, changing.-Frequency harmonics of electric oscillations are obtained by distorting the wave form of the fundamental frequency by overloading a thermionic generator, repeater, or rectifier. The harmonics, selected by tuned circuits, may be amplified, and then purified by filtering circuits. In the arrangement shown in Fig. 1, a valve generator 6 has its grid and plate circuits coupled by an inductance 10 connected in series with a number of loop circuits A<1> - - A<5> tuned to the first, second &c. harmonics of the fundamental frequency. As shown, currents of the first harmonic frequency are led through an amplifier 13, transformer 14, and filter' 15 to circuit 16, the second harmonics are led directly to circuit 17, while the third harmonics are led through an amplifier 18 and tuned circuit 19<1> to circuit 19. The valve is worked near its saturation point, this condition resulting in the distortion of the fundamental frequency. In an alternative arrangement, an oscillation generator 20, Fig. 2, which may be a highfrequency alternator or a valve generator, supplies current to a thermionic repeater 22, which, working near its saturation point, distorts the fundamental frequency. The output currents are led to a circuit 36 across which are arranged bridges F - - F tuned respectively to the fundamental wave and the first, second, and third harmonics. Currents of the first harmonic frequency are taken off at the transformer 26, 27, amplified at 28, and led through filtering circuits 31 to circuit 32. The selecting and filtering circuits shown in Fig. 1 may be used with the generator shown in Fig. 2 and vice versa. In a modification, a twoelectrode thermionic rectifier is used in place of the thermionic repeater 22, Fig. 2, additional distortion being effected by suppressing alternate half-waves.
Patent GB-215107-A (GB)
Title: Improvements in or relating to spring mattresses, spring seats and the like
IPC: A47C27/07
Filed: 1923-02-05
Abstract: 215,107. Matthews, S. N. Feb. 5, 1923. Mattresses.-A spring mattress is formed by building up its parts to the desired size and form, subsequently submitting the mattress as a whole to compression so as to reduce the depth thereof, and thereafter and while under compression enclosing the mattress in a suitable covering. The actual spring foundation may comprise upper and lower frames formed of spring steel strips 7 maintained apart by helical springs 3, or when a single surface mattress is required the lower frame may be replaced by any suitable support. The end convolutions of the outer helical springs may be of D-shape form and those of the corner springs may be rectangular or polygonal, and such convolutions are secured to the strips 7 by clips 14.
Patent GB-1247548-A (GB)
Title: Supervisory system for time-shared numerical control system
IPC: G06Q10/00
Filed: 1969-01-21
Abstract: 1,247,548. Programmed control of machine tools. ALLEN-BRADLEY CO. Jan.21, 1969 [Feb.29, 1968; Aug.26, 1968], No.3442/69. Heading G3N. A system as disclosed in Specification 1,159,799, wherein a central processor provides control instructions on a time-shared basis to a plurality of remotely located numerically controlled machine tools, as modified in accordance with Specification 1, 247, 547 to provide supervisory control and display circuits, is provided with facilities for gathering data at the central processor from the various machine tool locations for the purpose of preventive maintenance.
Patent GB-1530652-A (GB)
Title: Leaf counting machines
IPC: G06M9/02
Filed: 1976-01-29
Abstract: 1530652 Feeding sheets LAUREL BANK MACHINE CO Ltd 29 Jan 1976 [30 Jan 1975] 3542/76 Heading B8R [Also in Division G4] In a sheet counter employing rotary suction heads to separate the sheets one at a time, the fluctuations in pressure at the suction head due to the sheets are converted to voltage variations by a transducer 7 (not described in detail), amplified 7, applied to a threshold circuit 8 and counted at 9, 10.
Patent GB-660838-A (GB)
Title: Improvements in or relating to the treatment of alcoholic organic material
IPC: C07C51/295
Filed: 1949-02-09
Abstract: Fatty acids are made from mixtures of secondary aliphatic alcohols with hydrocarbons by treatment with molten alkali metal hydroxide at an elevated temperature high enough to maintain the reactants in the molten state but not high enough to decarboxylate the acids produced, and by maintaining such conditions that the alkali metal salts of the fatty acids produced remain in the reaction vessel while the other organic components of the reaction mixture, including the hydrocarbon in the feed and any unreacted alcohol, distil out of the reaction vessel.  Thus there may be treated residues obtained from the production of secondary alkyl sulphates from a mixture of olefines by continuously distilling these residues to provide a distillate comprising secondary aliphatic alcohols and hydrocarbons having from 5 to 20 carbon atoms per molecule.  The residues may be obtained from the sulphation reaction mixture by solvent extraction with, e.g., petroleum ether, isopropyl alcohol or I.M.S.  Temperatures specified are 250-350 DEG  C. and for C8-C18 alcohols a range of 300-325 DEG C. is given.  Preferably about 3 mols. of hydroxide per mol. of alcohol are used and a range of 0.75 : 1 to 10 : 1 is quoted. Preferably a mixture of sodium and potassium hydroxide is used, e.g. in 3 : 1 molar proportions.  The reaction product is poured into water so that in cooling the fatty acid salts separate from excess alkali metal hydroxide which may be recycled to the neutralization stage of the alkyl sulphate process and the salts are dissolved in hot water to separate from insoluble matter and worked up in conventional fashion.  In examples: (1) and (2) a hydrocarbon distillate containing 2 sec. alcohols having 8-18 carbon atoms per molecule is treated as above described, the distillate being fed below the surface of the vigorously stirred hydroxide; in (3) a similar distillate is treated in countercurrent with the molten hydroxide in a column packed with coke; and in (4) a synthetic mixture of dodecanol-2 and C8-C18 olefines is treated with an equimolar mixture of sodium and potassium hydroxides.
Patent GB-803062-A (GB)
Title: Improved method for preparation of 3, 4-dimethyl-5-sulfanilamido-isoxazole
IPC: C07D261/16
Filed: 1957-02-01
Abstract: 3 : 4 - Dimethyl - 5 - sulphanilamido - isoxazole (p - chlorosulphonylphenyl) - amidophosphoryldichloride, ClSO2.C6H4.NH.POCl2, with 3 : 4-dimethyl - 5 - amino - isoxazole, in the presence of water and hydrolysing the product by heating in an acid medium.  The condensation reaction is preferably carried out in the presence of a tertiary organic base and in the presence of a water-miscible solvent.  In examples: (1) 3 : 4 - dimethyl - 5 - aminoisoxazole, dissolved in acetone containing a minor amount of water, is treated with moist (p-chlorosulphonylphenyl) amidophosphoryl dichloride and the reaction product is heated with hydrochloric acid to give 3 : 4 - dimethyl - 5 - sulphanilamido - isoxazole; and (2) the process of (1) is carried out using pyridine as a condensing agent in the first stage.  Starting materials. p-(Chlorosulphonylphenyl)-amidophosphoryl dichloride is made by the action of phosphorus pentachloride on sulphanilic acid.
Patent GB-446848-A (GB)
Title: Improvements in electric motor control systems
IPC: B23K9/073
Filed: 1935-02-04
Abstract: 446,848. Automatic control systems; converting. BRAILSFORD, F., 3, Truro Avenue, Stretford, Manchester, DANNATT, C., 95, Grove Lane, Hale, Cheshire, and ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Crown House, Aldwych, London. Feb. 4, 1935, No. 3636. [Classes 38 (ii) and 38 (iv)] [See also Group XXXVII] Arcs.-A control system for driving a D.C. motor 1 in either direction from an A.C. source 4 comprises two grid-controlled rectifying valves I, II, reversely connected in parallel, with the grid 13 of the valve I so connected to the circuit of the valve II that the valve I is rendered conducting or non- conducting according to whether the valve II is nonconducting or conducting respectively, the grid 17 of the valve II being provided with control means to render it conducting or non-conducting when desired. When the valve II is conducting the motor runs in the reverse direction, while when the valve I is conducting, it runs in the forward direction. In the arrangement shown, the motor 1 is used for the automatic control of the feed of welding electrode 19 to maintain constant voltage across the welding arc. The arc is supplied from D.C. mains 22, 23 through the usual resistance 20 and choke coil 21, the grid 17 of the valve II being connected to the electrode 19 through a resistance 18. The cathode of the valve II is connected to a tapping 26 on a potentiometer 25, so that when the electrode 19 is at a distance from the work 24 and no arc is passing, the grid 17 is negative with respect to the cathode, and the valve II is nonconducting. Current then passes through the valve I and the motor rotates in the forward direction to feed the electrode 19 towards the work. As soon as the electrode contacts with the work, the grid 17 becomes positive with respect to the cathode and current flows through the valve II, the valve I becoming at the same time nonconducting owing to the connection of its grid with a resistance 6 in the circuit of the valve II. This connection includes a tapped resistance 14 and condenser 16, the discharge of which maintains the negative voltage on the grid 13 of the valve I during the half-cycles when no current is flowing through the valve II. The motor now rotates in the reverse direction and moves the electrode 19 away from the work to strike the are, the reverse movement being continued until the voltage across the arc reaches a value corresponding to the tapping point 26 on the potentiometer 25. Thereafter the two valves act intermittently and alternately to feed the electrode to the work at the correct speed to maintain the desired voltage across the arc. In a modification, Fig. 2 (not shown), for use where the welding arc is supplied from a source of fluctuating potential, the potentiometer 25, instead of being connected directly across the supply, is energized from a separate source of substantially constant D.C. voltage, which may be obtained by rectification from A.C. mains. Each of the valves 1, II may be replaced by a pair of valves arranged for full-wave rectification.
Patent GB-1340271-A (GB)
Title: Plant growth influencing agents
IPC: A01G/
Filed: 1971-02-03
Abstract: 1340271 Mixture of agents influencing plant growth DEUTSCHE GOLD-UND SILBERSCHEIDEANSTALT 3 Feb 1971 [30 June 1970] 3761/71 Addition to 1132306 Heading A5E An agent for influencing plant growth includes as active constituents: (a) at least one s-triazine of formula wherein X is halogen, alkoxy, alkylmercapto, azido or -NR<SP>5</SP>R<SP>6</SP>; R<SP>1</SP>,R<SP>2</SP>,R<SP>5</SP> and R<SP>6</SP> are H or alkyl or alkenyl optionally substituted by OH, OR, SR or CN (R being alkyl); and R<SP>3</SP> and R<SP>4</SP> are alkyl, alkenyl or aralkyl or taken together represent a 5-to 7-membered ring; and (b) at least one other compound capable of influencing plant growth. Component (b) may be an s-triazine such as a trazine or 2-chloro-4, 6-bis-ethyl amino s-triazine, monuron, diuron, 2,4-D, MCPA, barban, N-isopropyl-α-chloroacetanilide, S - ethyl - N,N - diisobutylthiolcarbamate, 2 - chloro - 2',6' - diethyl - N - (methoxymethyl) - acetanilide or 2,4 - dinitro - 6 - o - sec butyl phenol, but many other are listed.
Patent GB-565220-A (GB)
Title: Apparatus for measuring the difference of pressures of gaseous media
IPC: G01L7/18
Filed: 1943-03-09
Abstract: 565,220. Pressure gauges. CLIMATOR, Ltd., and BERLOWITZ, M. March 9, 1943, No. 3796. [Class 106 (ii)] Apparatus for measuring the pressure difference between two gases, one of which may be the atmosphere, comprises a capillary tube 7 which may occupy any angular position between vertical and horizontal according to the sensitivity desired. The bottom of the tube is connected through a metal U-tube mounting to a container 2, subjected through a cock 3 to the pressure of one of the gases and the axis of rotation of the tube coincides with the normal zero, which is therefore constant irrespective of the inclination of the tube. The top of the tube is connected through a tube 13 to the other gas. A cleaning aperture is closed by a screw 12. The level of the liquid in the container 2 and tube 7 is adjusted to zero by supplying or withdrawing liquid through a cock 5 communicating with a reservoir 6. The stand has adjusting screws 14, 15 and spirit levels 16, 17. The tube may be set to an inclination differing slightly from the horizontal by having secured thereto a spirit level at the required angle.
Patent GB-1421326-A (GB)
Title: Lens assembly for a lamp
IPC: B29C65/06
Filed: 1973-01-25
Abstract: 1421326 Lamp lenses LUCAS ELECTRICAL CO Ltd 9 May 1973 [10 May 1972 25 Jan 1973] 21686/72 and 3823/73 Heading F4R A lens assembly for a lamp comprises two elements 11, 12 having respective major surfaces 14, 17 which together define the external surface of the assembly, the elements also including further surfaces 10, 19 which are orbitally friction welded together to unite the elements. The elements may be of differently coloured, transparent, synthetic resin. One element 11 may include a "second" projection 13 which abuts the other element after welding and covers the weld externally. In a modified embodiment the "first" projection 15 carrying the further surface 19 may be shortened and a "third" projection produced on surface 10 to form the other of the further surfaces. This configuration may be modified to give projections with two welding surfaces forming a box section welded along opposite sides.
Patent GB-938914-A (GB)
Title: Tractor and fifth wheel coupler
IPC: B62D53/08
Filed: 1962-02-01
Abstract: 938,914. Fifth wheel couplings. LORD MANUFACTURING CO. Feb. 1, 1962 [Feb. 24, 1961], No. 3846/62. Class 103(5). A fifth wheel coupler plate 3, Figs 2, 4, has sockets 20 which accommodate the upper ends of inclined fore and aft link pairs 6, 7 provided with rubber torsion joints, the links at their upper ends being connected by further links 18, Figs 3, 5, to cross pins 19, and at their lower ends being connected to brackets 13 provided with stops 14 limiting the pivotal movement of the links. The links 18 permit the coupler plate 3 to tilt through a greater angle relative to the tractor 2 than the limited swinging of the links 6, 7 permitted by the stops 14, Fig. 5. The coupler is also provided with cranked levers 23 and ramps 21 fixed to pivot pins 22, the levers 23 having ends 24 which extend up through openings 25 in the plate 3 so that as the nose of the trailer rides up the coupler plate it engages the ends 24 and lifts the ramps 21 to guide the trailer nose into full coupling engagement. U.S.A. Specification 2,809,851, which is referred to, shows and describes a coupler plate mounted on fore and aft pairs of swing links such as 6, 7, the links being provided at each of their ends with rubber torsion joints.
Patent GB-1347831-A (GB)
Title: Decimal dividing device
IPC: G06F7/491
Filed: 1972-01-27
Abstract: 1347831 Digital dividers PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 27 Jan 1972 [30 Jan 1971] 3855/72 Heading G4A A digital divider of the type involving sequences of subtractions and additions of the divisor and the dividend or remainder, according to the method of division without restoration of the remainder, includes a divisor register in which the stage next higher than the highestordered divisor digit place is set to 0 and the next stage is set to 9. The divider has a dividend register in which the stage next higher than the highest-ordered dividend digit place is initially set to 0. The divisor is entered in binary decimal form in register NTR and the dividend in register TTR, Fig. 1. Calculator R subtracts the content of NTR, which remains unchanged throughout the division, from the content of TTR. The result, or remainder, is entered in TTR in place of the dividend, and again the content of NTR is subtracted from TTR. This process continues until the value of the remainder in stages To- Tn of the dividend register passes through zero. When this occurs the value in stage ETT is transferred to the lowest stage of quotient register QTR and the value in TTR is shifted one place left. The content of NTR is now added to that of TTR, the result being recorded in TTR. Further similar additions take place until the value in stages To-Tn of TTR again passes through zero. When this occurs the content of the quotient register is shifted one place left, the value in stage ETT transferred to stage Qo of the quotient register, and the content of TTR shifted one place left. A sequence of subtractions now takes place as before. When, or if, the value in stages To-In of TTR becomes zero after an addition or subtraction the value in stage ETT is transferred to stage Qo of register QTR as the lowest digit of the quotient. The various operations are controlled by a unit C, e.g. as in Fig. 5 (not shown), which in response to calculator cycle signals and to signals indicating the passage through zero, or the attaining of zero, of the stages To-Tn, provides signals commanding addition, subtraction, or shift.
Patent GB-1127307-A (GB)
Title: Device for checking the longitudinal profile of small-diameter channels
Inventor: ZAREV LEONID IVANOVICH
IPC: G02B23/24
Filed: 1966-01-28
Abstract: 1,127,307. Optical gauging. GOSUDARSTVENNY NAUCHNO-ISSLEDOVATELSKY INSTITUT ALMAZNOGO INSTRUMENTA I PROZESSOV ALMAZNOI OBRABOTKI. Jan. 28, 1966, No. 3888/66. Heading G1M. [Also in Division G2] Optical apparatus for checking the longitudinal profile of a small-diameter bore comprises a light source 15 for passing a beam of light through the bore 1, means for receiving the beam from the bore 1, together with a driving system 6 which varies the direction of the light beam passing through the bore. In the embodiment of Fig. 5 a light beam is projected on to a scanner 31 comprising a plurality of mirror surfaces, the scanner 31 being rotatable by the drive system 6 so as to vary the direction of the reflected beam which passes through the bore 1. The light beam is then directed by means of a lens and mirror system through a prism 39 mounted for rotation with the scanner 31. Variations in the cross-section of the final beam are recorded by a camera 21. Modifications of the means for varying the direction of the light beam passing through the bore are given. For example, the light beam may be stationary while the plate containing the bore 1 is rotated about an axis at right angles to the beam of light.
Patent GB-563971-A (GB)
Title: Improvements in or relating to devices for delivering liquid in drops
IPC: B65D47/18
Filed: 1943-03-11
Abstract: 563,971. Delivering liquids in drops. GLAXO LABORATORIES, Ltd., and HOWKINS, A. G. March 11, 1943, No. 3981. [Class 125 (iii)] A device for dispensing liquid in drops comprises a tube 1 and rod 5 with enlarged ends 6, 7, the end 7 being so dimensioned that liquid flows at a rate which results in delivery in the form of individual drops of size determined by the surface tension and specific gravity of the liquid. Various shapes for the parts 6, 7 are described and the passage between elements 5, 1 may be o: varying cross-section.
Patent GB-1493553-A (GB)
Title: Manufacture of pyridine and methyl-pyridines
IPC: C07D213/09
Filed: 1976-02-02
Abstract: 1493553 Manufacture of pyridine and methylpyridines IMPERIAL CHEMICAL INDUSTRIES Ltd 11 Jan 1977 [2 Feb 1976] 03998/76 Heading C2C A process for the manufacture of pyridine and/or methylpyridines comprises the catalytic vapour-phase reaction of 1,3-butadiene and methylamine. Preferably the catalyst comprises silica-alumina and the reaction is carried out from 300‹ to 550‹ C. The molar ratio of methylamine to butadiene is preferably at least 0.5 to 1. The reaction is preferably carried out in the presence of nitrogen and/or another gaseous diluent (e.g. steam). The proportion of pyridine (relative to methyl pyridines) in the product is in general increased by the incorporation of molecular oxygen in the reaction mixture.
Patent GB-1135202-A (GB)
Title: Independently driven wheel for lift trucks and other vehicles
Inventor: DRAKE RONALD
IPC: B66F9/075
Filed: 1965-03-30
Abstract: 1,135,202. Driving steerable wheels. JOSHUA SHAW & SONS Ltd. 21 June, 1966 [30 March, 1965], No. 4205/65. Heading B7H. A steerable driven wheel assembly 1 of a vehicle comprises a bracket which is pivotable about a vertical vehicle axis, has the wheel journalled thereon and supports a variable speed electric or pressure fluid motor 12 connected to the wheel through reduction gearing and to a power source carried on the vehicle and which has an upright wall 7, a top flange 8 extending on both sides thereof and secured to a vertical swivel pin 27 for mounting by bearings 28, 29 in the vehicle, and a bottom flange 10, extending on one side only of the wall 7 and away from the wheel and through which the vertical motor output shaft 13 projects. The gearing comprises spur wheels 15 (16) (Fig. 3, not shown) 17 or chain gearing and bevel gears 19, 21. An oil-tight housing is formed by the bracket and cover-plates 22, 25.
Patent GB-1347662-A (GB)
Title: Asbestos compositions
IPC: C04B26/04
Filed: 1972-01-28
Abstract: 1347662 Asbestos diaphragms SIEMENS AG 28 Jan 1972 [29 Jan 1971] 4241/72 Heading C1A [Also in Divisions C7 and H1] An asbestos composition suitable for use in the manufacture of acid resistant diaphragms for electrochemical cells is produced by treating amplitude asbestos with an aqueous solution of a cation-active wetting agent to open out fibre bundles, removing non-opened out fibre bundles, preparing an aqueous suspension of the opened out asbestos fibres and a powdered swellable filler which is stable in acid electrolytes and is ion-conductive, admixing the suspension with an acid stable polymer dispersion and drying the so-formed mixture. Specified fillers are metals, metal oxides, zeolites, bentonites and cationexchangers. They preferably have a particle size of less than 100 Á.
Patent GB-431323-A (GB)
Title: A process for refining hydrocarbon oils
IPC: C10G21/12
Filed: 1935-02-11
Abstract: Hydrocarbon oils are refined and freed from non-paraffinic constituents by extraction with a mixture of furfural and naphthalene.  Lubricating oil distillate is extracted with four quantities of the solvent mixture containing 70 per cent of furfural at 25, 35, 55 and 65 DEG  C. respectively.  The final raffinate is of high viscosity index and free from dark-coloured constituents.
Patent GB-1286902-A (GB)
Title: Improvements in or relating to sports shoes
Inventor: AUSTIN MARCUS LUTHER
IPC: A43B5/00
Filed: 1970-01-29
Abstract: 1286902 Boots &c LUTHER AUSTIN & SONS Ltd 19 April 1971 [29 Jan 1970] 4411/ 70 Addition to 1093107 Heading A3B The sports shoe of the parent Specification which has a moulded sole 1 of rubber or synthetic plastics material provided with studs 2 having a series of grooves which extend at least part way across the sole to provide lines of flexing for the sole, is modified by extending at least one of the grooves completely across the sole. The groove may extend straight across the sole (see groove 4) or may have offset portions 7, 8 separated by a longitudinal or oblique portion 9 (see grooves 5, 6). The grooves may all be of the same type or may be combinations of the grooves 4, 5, 6 and the grooves shown in the parent Specification.