baber/WOPTO huggingface dataset:
Patent GB-1413710-A (GB)
Title: Non-contacting shaft horsepower measurement system
IPC: G01L3/14
Filed: 1973-06-26
Abstract: 1413710 Measuring horsepower SIMMONDS PRECISION PRODUCTS Inc 26 June 1973 [26 June 1972] 30308/73 Headings G1A and G1N In a non-contacting sensing system for determining the horsepower output of a rotatably driven shaft 10 a first D.C. signal proportional to shaft torque and a second D.C. signal proportional to shaft rotational speed are applied to a multiplier which produces a D.C. output signal proportional to the product of the signals and representing horsepower.  As shown in Fig.1, a reference toothed wheel 14 and a torque responsive toothed wheel 15 are mounted on shaft 10. A further pair of toothed wheels 17, 18 are mounted on a shaft 19 driven at a constant speed by a motor 20. A magnetic circuit 23 is arranged between wheels 15, 18 and an identical circuit 33 is arranged between wheels 14, 17. Each magnetic circuit comprises a pair of sensor shoes 22, 26 arranged inside the periphery of its respective toothed wheel, a pair of magnetic end pieces 29, 30, a magnet 31, and an output coil. As shown in Fig.4, the output coil 32 of the torque responsive magnetic circuit is connected to a differential comparator 39 whose output (square wave 63) is differentiated at 46, 48 to provide positive and negative spikes 64, 65, the negative spikes being passed through a diode 50 to one input of a flip-flop 52. The output coil 41 of the reference magnetic circuit is connected to a similar circuit whose output is connected to a second input of the flip-flop 52. The output of flip-flop 52 is a square wave signal 69 which is integrated at 61, 62 to provide the D.C. torque signal. The speed of the reference toothed wheel 14 is determined by a stationary sensor 34, Fig.1, which includes a coil 43, Fig.4, connected to a differential comparator 44 whose output is differentiated at 72, 73, the resultant positive spikes being applied through a diode 77 to a monostable multi-vibrator 78 whose output is integrated at 81, 82 to provide the D.C. speed signal. The two D.C. signals are applied to a multiplier 85 having an adjustable multiplying factor determined by a potentiometer 90. The output of the multiplier is provided to a meter 96, which may be remote, via an amplifier 95. In a modification, Figs.3 and 5 (not shown), three toothed wheels are arranged on the shaft 10 and three non-contacting sensors are provided, one of the wheels and corresponding sensor being used to provide the speed signal and also to correct the torque signal for misalignment. As shown in Fig.2, the wheels 14, 15, 17, 18 are provided with slots 35 which co-operate with light sources and light sensors to provide the pulse signals representing torque and speed. Other sensing means include Hall effect devices and eddy current sensors to detect locations of the teeth.
Patent GB-286353-A (GB)
Title: Improvements in or relating to radio receivers
IPC: H01F19/04
Filed: 1926-12-01
Abstract: 286,353. Rees Mace Manufacturing Co., Ltd., and Hoisington, W. F. Dec. 1, 1926. Thermionic amplifiers; receiving-sets, construction of; aerials.-In a wireless receiver the inductance of the aerial coil or winding is arranged to be approximately equal to the inductance of the primary and secondary windings of the high frequency transformer. Tuning of the transformer secondary allows a non-oscillating condition to he obtained in the high frequency valve 3, and adjustment of the coupling between the primary and secondary windings of the transformer may also be employed. The Figure shows the application to a portable receiver in which the aerial is wound on a frame within the apparatus in two sections 1, 2 in spaced relation and provided with switching means 8 so that both may be employed in series, or one section only, or a portion of each section may be used. Corresponding switching means 14 allows the transformer 13 to be substituted for the transformer 12 to maintain the primary and secondary winding inductance respectively approximately equal to the inductance of the aerial. The aerial winding and transformer windings not in use are preferably short-circuited by the switching means. A shield 32 for the high-frequency amplifier 3 and detector 4 and a separate shield 33 for the electromagnetic actuator of the loud-speaker are provided. A jack 10 may be provided so that an external earth and aerial may be used.
Patent GB-520055-A (GB)
Title: Apparatus for producing a high velocity beam of ions
IPC: G21K1/14
Filed: 1938-10-21
Abstract: 520,055. Canal-ray tubes. ALLGEMEINE ELEKTRICITATS-GES. Oct. 21, 1938, No. 30545. Convention date, Oct. 21, 1937. [Class 39 (i)] . Apparatus for producing a beam of high velocity ions comprises means for producing negative ions, an electric field for accelerating these ions, means for transforming the accelerated ions into positive ions without any great loss of velocity, and a second field for further accelerating the positive ions produced. The negative ions, formed at the source 1 direct or by the transformation of positive ions and uncharged particles at the bore 2, are accelerated towards the high potential electrode 5. The bore of this electrode is supplied with gas through the tube 7 so that there is an excess pressure inside, the bore, or is closed by a thin foil, or is so shaped as to give glancing incidence to the ions. In any case the latter are transformed into positive ions and further accelerated towards the reaction chamber 10, and collecting electrode 9, the electrode 9 and bore 2 being at earth potential. An exhaust pipe 8 is provided.
Patent GB-520415-A (GB)
Title: New colouring matters
IPC: C09B57/04
Filed: 1938-10-21
Abstract: 520,415. Dyes. HADDOCK, N. H., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Oct. 21, 1938, No. 30556. [Classes 2 (iii) and 15 (ii)] New colouring matters are made by heating, if desired in the presence of a solvent or diluent, a heterocyclic compound containing a reactive methylene group in the heterocyclic ring and either an iminophthalimide or, in the presence of a substance facilitating the removal of water, a phthalimide. The products may be used as pigments; some are dyestuffs for cellulose acetate. On sulphonation they yield acid wool dyes, which may also be used for making lakes. Instead of the iminophthalimide, substances yielding this under the conditions of the reaction may be used, e.g. o-cyanobenzamide, a mixture of phthalic anhydride or phthalimide with urea and ammonium molybdate, or a mixture of phthalic acid diamide and zinc chloride. In examples: (1) 7-chloro-5-methyl-3-keto-2:3- dihydrobenz-1:4-diazine is heated with (a) o-cyanobenzamide, (b) phthalimide and anhyrous zinc chloride or a melt of aluminium and sodium chlorides, or (c) phthalimide, urea and ammonium molybdate ; the product is a yellow pigment; (2) the product of example (1) is sulphonated with oleum, an acid wool dye (yellow) is obtained; (3) 5:6-benzo-3-keto-2:3- dihydrobenz:1:4-thaizine is heated with ocyanobenzamide; an orange pigment, which en sulphonation gives an orange acid wool dye, is obtained ; (4) 6-chloro-4-methylthioindoxyl, 2:1- or 2:3-naphthathioindoxyl, or 6-ethoxythioindoxyl are heated with o-cyanobenzamide and the products sulphonated ; orange to red pigments or acid wool dyes are obtained ; (5) oxindole is heated with o-cyanobenzamide ; the product dyes acetate artificial silk in yellow shades ; (6) 2:4-diketo-1:2:3:4-tetrahydroquinoline is heated with o-cyanobenzamide, and (7) N-methyloxindole is heated with iminophthalimide in α-chloronaphthalene, the product can be used as a pigment or as a dyestuff for acetate artificial silk (yellow shades) ; similar yellow pigments, which are dyestuffs for acetate artificial silk can be obtained from 1:3- or 1:4-dihydroxy-iso-quinoline.
Patent GB-666382-A (GB)
Title: Improvements in or relating to fine mesh screen type insulator electrodes and the method of making the same
IPC: H01J29/39
Filed: 1949-11-29
Abstract: 666,382. Cathode-ray tubes. RADIO CORPORATION OF AMERICA. Nov. 29, 1949 [Nov. 30, 1948], No. 30569/49. Class 39 (i). A mesh electrode of insulating material as used in a television camera tube is of hollow construction and is formed by coating a conventional wire mesh with silica and then dissolving out the metal. The wire mesh, which may be made in any desired manner, and is of a typical fineness such as 200 to 1000 mesh per inch, is coated by exposure to a mixture of silicon tetrachloride (SiCl 4 ) and water vapour, which react to leave a precipitation of hydrated silica (SiO 2 .nH 2 O) on the mesh; some practical details are given. The wire mesh is dissolved out by immersion in concentrated nitric acid for some days, leaving a hollow tubular structure 14 of silica. This step may be accelerated by first washing the coated mesh and allowing it to dry partially, when the silica layer begins to dehydrate and shrink, forming cracks 40 which allow quicker penetration by the acid. The dehydration is subsequently completed by drying. An alternative method of coating the wire mesh is by decomposition of ethyl silicate vapour at a high temperature. In the tube of Fig. 4 (not shown), the silica mesh has a photosensitive layer on one side, on which is formed a charge pattern corresponding with a light picture focused on it, and which is then utilized to control the passage of low velocity electrons from a scanning beam or from a continuous electron spray, which pass through to be collected by an output electrode or focused on to a fluorescent screen.
Patent GB-744438-A (GB)
Title: Preparation for the treatment of hair
Inventor: FROMMER SAMUEL SIGMUND
IPC: A61K8/66
Filed: 1953-11-05
Abstract: A preparation for transcutaneous use of the scalp for the restoration of the natural colour of the hair, or for preventing it becoming grey, comprises (a) one or more of the following:-mono- or poly-hydroxyphenyl amino acids, or salts thereof with bases (i.e. a metal or ammonium salt, or a salt of an organic base) or with acids, or adrenaline or its compounds with acids and (b) tyrosinase, these ingredients being incorporated in a carrier, e.g. alcohol and/or glycerin, or a fatty base, as in an ointment, or an anhydrous base as in a brilliantine.  Oil-in-water emulsions may also be employed.  The preparations may also contain liver and/or yeast extracts, vegetable extracts containing an orthodiphenol combined with 5 : 7-3 : 4 dihydroxychromanes, e.g. quercetine its glycoside quercitrine found in chamomile extract, or the extract itself. Examples of amino acids used are 3 : 4 dihydroxyphenylalanine and tyrosine.
Patent GB-622945-A (GB)
Title: Non-separating lubricating greases
Filed: 1946-10-15
Abstract: Non-separating lubricating grease, including so-called "non-fluid oils" (i.e. low-percentage dispersions of metallic soaps in lubricating oils), comprising stable dispersions of metallic soaps in mineral lubricating oils, are obtained by the addition as stabilizers of small proportions of one or more glycols each having more than four carbon atoms in the molecule. The glycols may be monomeric or polymeric, substituted or non-substituted.  The glycolic hydroxyls may either be linked to the terminal carbon atoms of a chain of carbon atoms or they may be linked to intermediate carbon atoms.  The glycol may be added before, during or after the preparation of the dispersions, generally to the extent of a few percentages by weight of the final product.  Examples of glycols which may be used are: dodecane glycol, cetene glycol, and hydrates of the polymers of propylene oxide, e.g. di-and tri-propylene glycol.  The soap metal may be sodium, potassium, lithium, calcium, aluminium or barium, or mixtures of two or more of these.  If fatty acids are used for preparing the soap, those which contain twelve or more carbon atoms in the molecule and are saturated or contain not more than one double bond in the molecule are preferred.  The dispersions may be anhydrous or contain a small proportion of water.  In an example, a mixture of 150 parts by weight of calcium palmitate, 850 parts of mineral engine oil, and 15 parts of cetene glycol are heated for 45 minutes at 160 DEG  C. with stirring.  The dispersion obtained is cooled to room temperature in thin layers in pans and homogenized by rolling and pressing.
Patent GB-510934-A (GB)
Title: Improved method of separating phenols from aqueous alkaline liquors containing same
IPC: C07C37/86
Filed: 1938-10-24
Abstract: 510,934. Extracting phenols from solutions containing them. TENNANT, W. J. (Dow Chemical Co.). Oct. 24, 1938, No. 30721. Drawings to Specification. [Class 2(iii)] Aqueous alkline solutions of alkali metal phenates are acidified whereby two layers are formed, one a phenol layer and the other a water layer containing some dissolved phenol. The phenol layer is removed and phenol is extracted from the water layer with a water immiscible solvent, from which the phenol is then extracted with an alkaline metal phenate solution prior to its acidification. Phenol left in the water layer after extraction with a solvent is removed by steam distillation. The process is particularly applicable to the alkaline phenate solution obtained in the preparation of phenols from halogenated hydrocarbons. Alkaline phenate solutions are also obtained in the manufacture of phenols from sulphonic acids, or from the products of distilling coal. In an example chlorbenzene is heated under pressure at 350-400‹C. with sodium hydroxide solution. Ureacted chlorbenzene, diphenyl oxide and other alkali insoluble products are separated from the mixture. The alkaline sodium phenate solution after admixture with a solvent containing phenol from a later stage in the process, and separations from the diphenolised solvent is acidified and the phenol layer separated. Hydrochloric or sulphuric acid, sulphur dioxide or carbon dioxide may be used for the acidification. The aqueous layer containing dissolved phenol is treated with a waterimmiscible organic solvent, e.g. benzene, chlorbenzene, kerosene, carbon tetrachloride, or ethylene chloride. The extraction step may be repeated, e.g. with chlorbenzene which after the extraction is' sent to the original hydrolysing step of the process for conversion to phenol. The solvent containing phenol is then treated with fresh sodium phenate solution, and the aqueous layer may be treated with active charcoal or distilled with steam for removal of last traces of phenols, the distillate being used to prepare a caustic soda solution for the hydrolyzed step.
Patent GB-818867-A (GB)
Title: Improvements in and relating to processes involving reaction of gaseous and discretematerials and to apparatus for use in such processes
IPC: B01F7/08
Filed: 1956-10-10
Abstract: A reactor for reaction between a discrete solid, e.g superphosphate, and a gas, e.g. ammonia, comprises a solid feed hopper 1 mounted on a horizontally disposed elongated tubular channel 2 in gas-tight fashion and the channel carries a hollow shaft 5 with archimedean-screw conveyer helices 6 which advance the powdered material from the hopper 1 to the opposite end of the tubular channel to an exit or exits 10.  The ammonia, which may be injected into the reaction chamber in a gaseous or a liquid form as <PICT:0818867/III/1> the heat of reaction will vaporize liquids, is led into the reaction solid via inlets 11 in the hollow shaft or by inlets into the shell 2 (not shown).  The length and shape of the conveyer screw; speed of the forward motion of the superphosphate; the rate of injection and strength of the ammonia; the time of contact of the superphosphate with the ammonia; the size of the reactor channel and the position of the inlets may be controlled so as to attain the required ammoniation or reaction.  The hopper 1 may be fitted with automatic or constant feed device mechanisms such as ultrasonic or magnetically operated vibrators.
Patent GB-931407-A (GB)
Title: Improvements in or relating to strain gauges
Inventor: EDWARDS JOHN
IPC: G01L1/22
Filed: 1959-09-11
Abstract: 931,407. Thermocouples. A. V. ROE & CO. Ltd. Sept. 11, 1959, No. 31024/59. Addition to 886,719. Class 37. [Also in Group XXXVIII] Two thermocouples are made by stretching the component wires 31, 32 (Fig. 2) e.g. of nickel/chromium and nickel/aluminium respectively across a frame 10, welding them together at the intersection using the jig described in the parent Specification, welding ribbons 33, 34 of the same materials as the wires to the wires and trimming away superfluous wire. The couples are then mounted on a backing together with a strain gauge.
Patent GB-138315-A (GB)
Title: Improvements in steam turbines
IPC: F01D13/00
Filed: 1919-12-11
Abstract: 138,315. Belluzzo, G. Jan. 17, 1919, [Convention date]. Motor power plant; blades; reversing.-In a marine geared turbine installation comprising a high-pressure casing, Fig. 1, and a low-pressure casing, Fig. 2, steam for forward working is supplied by nozzles d to a wheel A having blades with outer and inner faces oppositely-curved for forward and reverse working respectively; the steam then passes by way of a valve O and duct L to the upper half of a hollow diaphragm I having nozzles supplying the next wheel B, whence the steam flows through the successive wheels C, D, E, and is delivered through the outlet R to the low-pressure casing at r, Fig. 2. From the inlet r the steam flows through the space o to wheels A1 - - E1, and then, dividing into two portions, flows in parallel through two sets of wheels F1, G, and F<1>, G<1>1 to the, exhaust s. For reverse working, steam is admitted to the lower half M of the hollow diaphragm I and so, by way of the nozzles N, to the inner reversed portions of the blades of the wheel A; thence, by way of a valve P, it flows. to a radial inward-flow wheel y arranged in a low-pressure casing between the wheels G1, G<1>1. A single, casing may be used for the high and low pressure wheels. Two high pressure and two low pressure casings may be used. The blades with the oppositely curved faces for forward and reverse working are machined from drawn bars having the section shown in Fig. 6. Specification 6010/15 is referred to.
Patent GB-412833-A (GB)
Title: Improvements in or relating to spill-over or relaxation oscillation generators and apparatus incorporating the same
IPC: H03K4/12
Filed: 1933-11-08
Abstract: 412,833. Valve generating circuits. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. Nov. 8, 1933, No. 31146. Convention date, Nov. 8, 1932. [Class 40 (v).] In a relaxation oscillation generator comprising a condenser 5 continuously charged from a source 6 and discharged periodically over a thermionic valve 4, gas discharge tube &c. by applying periodic control voltage to the grid, the control voltage is obtained by applying a control frequency to an iron-cored choke 3 saturated for the major portion of each halfcycle so that short voltage peaks are applied to the grid during the passage of the current through zero. The valve, which may have more than one grid, is normally non-conductive, but discharges the condenser on positive peaks of the control voltage. The oscillations applied over 1, 2 to the choke 3 may be derived from a motor-driven alternator, pendulum converter, tuning fork vibrator, valve generator or a photo-electric cell periodically actuated by a light beam. The generator may be used in television for line or picture frequencies. Specification 395,499 is referred to.
Patent GB-207369-A (GB)
Title: Improvements relating to match and like boxes or receptacles, cigarette cases and the like
IPC: A24F15/12
Filed: 1922-11-15
Abstract: 207,369. Wilmot Manufacturing Co., Ltd., and Marks, W. H. Nov. 15, 1922. Materials, special, for boxes and cases; fittings, internal; match-striking plates and surfaces.-In a match-box, cigarette, case, &c., comprising two hinged parts 1, 2 and having a flap 5 hinged on the box or case hinge 6, the flap has side walls 7 and an end wall 15 adjacent the hinge which take within and vertically constitute an extension of the wall of the part 1 and form a pocket of a depth almost equal to the depth of the entire case. The walls 7 are indented at 9 to form lips which can be sprung past projections 10 on the part 1 to hold the flap in position. The flap &c. may be provided with an oblong slot 12 and inwardly bent spring tongues 13 which hold a striking surface 14 over the slot. The flap may be controlled by a spring normally tending to keep it in the closed position. The box or case and flap may be made of metal, leather or celluloid.
Patent GB-523149-A (GB)
Title: Improved carbon blacks
IPC: C09C1/56
Filed: 1938-10-28
Abstract: 523,149. Carbon black. BAIRD, W., WARING, J. R., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Oct. 28, 1938, No. 31246. [Class 90] Carbon black of the type known as channelblack is subjected to the action of chlorine and heat to produce a black containing 1 to 5 per cent. of chlorine. The product is suitable for use as a rubber filler. Examples of rubber mixes containing other ordinary mixing materials and the chlorinated channel black are given in the Specification. Specifications 451,602 and 456,252 are referred to.
Patent GB-306591-A (GB)
Title: Improvements in or relating to internal combustion engines
IPC: F01P5/06
Filed: 1927-11-23
Abstract: 306,591. Halford, F. B. Nov. 23, 1927. Cylinders, cooling; plant.-In a motor power plant, specially suitable for aircraft, and comprising two rows of cylinders having axes in parallel planes and associated with parallel crankshafts which are connected to a common driving shaft, the cylinders are cooled by placing an obstruction at one end of the passage between the rows of cylinders which causes air, flowing through the pasage, to be diverted laterally between and over the cylinders. Fig. 3 shows a plan view of an engine in which the two rows of cylinders D are diametrically opposed by a further two rows, and air forced into a casing F F<1> by the motion through the air, a fan or in the case of an air craft, the propeller, is caused by the end F<2> of the casing to flow between the cylinders and out at louvres F<2> when its flow is assisted by the flow of the outside air; the air may be guided into the space E. The air may be forced into the space between the outer sides of the rows of cylinders and the casing, an obstruction being placed at the front end of the space F, and an escape pipe having, preferably, a suction fan being provided at ths rear end. The air may be forced, by a fan, into the space E from the rear end, the obstruction being placed at the front.
Patent GB-332479-A (GB)
Title: A new or improved plate for sponge sandwich, cake, pie and the like food-stuff to be cut into portions
IPC: A47G19/02
Filed: 1929-10-18
Abstract: 332,479. Irving, H. U., (trading as Paragon China Co.). Oct. 18, 1929. Plates.-A plate for sponge and like soft cakes, which will facilitate division into portions without breakage, is formed with a flat raised central portion R forming a bed for the cake or sandwich. Specification 220,255 is referred to.
Patent GB-1314654-A (GB)
Title: Reciprocating drive mechanism
IPC: B26B19/28
Filed: 1971-07-06
Abstract: 1314654 Conveying rotary motion PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 6 July 1971 [9 July 1970] 31667 Heading F2Q In a personal care device, such as a manicure accessory, a hair clipping cutter or a vibratory massage, mechanism for driving a member 17 in a complex path comprises gear-wheels 2, 3 driven from a pinion 1 and carrying eccentric pins 9, 10 coupled to levers 13, 14 the opposite ends of which are coupled together by a pin 15, the member 17 being carried by the lever 13. The gear-wheels 2, 3 have different numbers of teeth.