baber/WOPTO huggingface dataset:
Patent GB-301637-A (GB)
Title: Improvements in or relating to the manufacture of pianos
IPC: G10C3/04
Filed: 1927-11-23
Abstract: 301,637. Allen, F. B. Nov. 23, 1927. Pianofortes, framing, cases, and wrest-planks for. - The vertical braces E, the top and bottom horizontal back lining members C, D and braces F, G, the sides or ends, the half-top T, and the wrest-plank H are glued together simultaneously in a special cramp. The cramp comprises a plane bed-plate 2 with fixed or adjustable positioning members for the lining members and the piano ends, and notched transverse members 2c positioning the vertical braces E. The piano ends are pressed by cam clamps (not shown). A vertically adjustable stop-plate 10 receives the pressure from screw clamps 4 which may be turned down out of the way on pivots 4<c>. Clamps 5, 6 pressing the parts against the plane surface may also be turned down on pivots 5a, 6<d>.
Patent GB-379916-A (GB)
Title: Improvements in or relating to automatic volume controlled amplification systems
IPC: H03G7/02
Filed: 1931-11-14
Abstract: 379,916. Valve amplifying circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London. -(Assignees of Farrow, F. R. ; 700, White Horse Pike, Audubon, New Jersey, U.S.A.) Nov. 14, 1931, No. 31586. Convention date, Nov. 26, 1930. [Class 40 (v).] In a thermionic amplifier the gain is arranged to vary in accordance with signal strength so that loud passages are reproduced at m o r e realistic levels and the change in relative amplitude effected in recording or in wireless transmission is wholly or partially corrected. The gain control is effected by a thermionic valve the cathode emission of which is controlled by amplified signal currents. In addition the control prevents overloading on strong signals. The system is particularly applicable to wireless receivers embodying automatic volume control. The Figure shows an arrangement in which the volume is controlled by varying the grid bias to the push-pull amplifying valves 1, 3 by means of auxiliary valve 39 the anode current of which reduces the voltage drop in the portion of the potential divider 27 which supplies grid bias to valves 1, 3. Anode current in valve 39 is controlled by filament heating which is derived from the output signal through winding 37. In a modification, Fig. 2 (not shown), the auxiliary valve is arranged in series with the anode supply to the amplifying valves and controls the anode potential. Filters may be included in the connection to the control valve so that the system may discriminate in favour of frequencies in any desired range. The Specification as open to inspection under Sect, 91 (3) (a) comprises also a further modification in which the auxiliary valve controls the grid bias of the amplifying valves, but the impedance of the auxiliary valve instead of being controlled by filament heating, is arranged to rectify at the bottom bend and is controlled in grid potential in parallel with the output valves. This subject-matter does not appear in the Specification as accepted.
Patent GB-635956-A (GB)
Title: Improved mechanism for hand or foot operating brakes of cycles and motor vehicles
IPC: B62L3/02
Filed: 1947-11-29
Abstract: 635,956. Control levers for brakes. FERIDAX, Ltd., and COLLIER, R. G. Nov. 29, 1947, No. 31615. [Class 136 (i)] In lever operated mechanism of the kind in which there is provided a straight line pull on the wire for a distance from the end of the wire, an obliquely disposed power link 10 is provided which is pivoted at one end to a traversable member 7 guided in a straight slot 5 of a bracket 3 and to which the nipple of the pull wire x is connected and pivoted at its other end to a second order lever 15 fulcrummed on the bracket 3, the pull wire passing in a straight line from the member 7 to the fulcrum of the lever. The traversable member consists of a cylindrical pin 7 having an end 8 to engage and travel the slot 5 and an end forming a nipple seating 9. The power link comprises an integral arm 11 and a cylindrical sleeve 12 which is pivotally mounted on the middle portion of the pin 7. The lever 15 is fulcrummed to a transverse stud applied rigidly to a hole 6 in the bracket 3. The stud has a head 17 slotted at 23 and formed with a sinking 24 providing a seating for the end 25 of the cable sheath 26. The power link is held to the bracket by the disposition of the operating lever 15, and the pin 7 is held in engagement with the slot 5 by the engagement of the cable x in a slot 14 provided in the power link.
Patent GB-1500587-A (GB)
Title: Sampled data filters
IPC: H04L27/22
Filed: 1975-07-29
Abstract: 1500587 Active filters, telegraphy INTERNATIONAL BUSINESS MACHINES CORP 29 July 1975 [30 Aug 1974] 31635/75 Headings H3U and H4P A circuit for reducing the effects of phase jitter at the output of a phase detector for phase shift keyed signals includes a filter 6 having a transfer function The unwanted phase jitter can be expressed as a function a 0 +a 1 n+x n  where a 0  is a constant representing phase intercept; a 1  is a constant representing frequency shift between two successive sampling times; x n  is a random noise component. It is shown mathematically that a filter having the above stated transfer characteristic will eliminate the first two terms of the unwanted signal. In one embodiment, Fig. 2, this characterstic is realized by an arrangement comprising a subtractor 10, and detector/separator 11 and a digital filter 12, which may take the form of Fig. 8 (not shown). The detector/separator, Fig. 11 (not shown) separates the jitter signal to feed it back through filter 12, The additional component x n  may be removed by a further filter 8 which comprises a digital filter 19 whose form will depend on whether x n  is a known function or whether it is a time varying function, delays 20, 21, subtractors 16, 17 and a detector/separator similar in form to that in filter 6. Where the function x n  is time varying filter 19 may be a predictive filter of the form of Fig. 7 (not shown). Alternatively the filter 8 may take the form of Figs. 6, 8 (not shown). Instead of the cascade arrangement of filters 6, 8 parallel arrangements may be used, Fig. 9(b), not shown) being an example suitable where x n  is a fixed function and Fig. 10(b) (not shown) being an example suitable where x n  is time varying.
Patent GB-1392646-A (GB)
Title: Rotary drives
IPC: B41J13/00
Filed: 1972-07-06
Abstract: 1392646 Toothed belt drive MEAD CORP 6 July 1972 [9 July 1971] 31834/72 Heading F2Q A drive for use in printing equipment, for rotating a printing cylinder, comprises a toothed belt 44, with external teeth equal in number to the teeth of the toothed driven wheel 18 with which the external teeth of belt 44 engage. The belt is driven by gear 25 and also passes around an idler gear 40. As shown in Fig. 4 the belt comprises separate sections, 44a, 44b, 44c and 44d, formed by cutting the belt, which sections are then moved each relative to the others so that inaccuracies in the teeth of the belt cancel out.
Patent GB-274710-A (GB)
Title: Improvements in advertising devices
IPC: G09F21/04
Filed: 1926-12-16
Abstract: 274,710. Sandling, G. M., and Clee, L. C. Dec. 16, 1926. Reel and endless web apparatus; actuating and controlling. - In vibration-operated advertising &c. devices the clutch between the relatively movable mass and the rotary member which carries the advertisement consists of a coiled spring e. The spring ends bear against a roller a carrying a display band and against a disc f which is oscillated by a rod m pivoted to a mass o suspended from a pivot q. A similar spring h fixed at one end bears with its free end on the roller and acts as a detent. The disc f may be located between two springs e which actuate two co-axial rollers. Conical springs r cushion the mass o, which is guided between uprights s. To operate by vertical oscillation the mass o may be mounted on a plate spring and additionally supported by a conical spring, and may have a rod extension O<1>, Fig. 8, sliding in diametrically opposite slots S<1> in a straight or curved tube S in which slides a ball T threaded on the rod O<1>. Rubber &c. buffers T<1>, T<2> limit the movement nf the ball T and mass 0, the buffer T<2> being adjustable. The rollers a may pivot on ball studs, and the advertising band may be kept taut by a jockey roller mounted on spring-pressed arms.
Patent GB-1376649-A (GB)
Title: Anhydrous aerosol foam
IPC: C09K23/54
Filed: 1972-07-07
Abstract: 1376649 Aerosol foaming compositions BRISTOL-MYERS CO 7 July 1972 [12 July 1971] 31893/72 Heading C4X [Also in Division A5] An anhydrous aerosol composition which forms a stable but quick-breaking foam comprises (i) a high vapour pressure liquefied propellant, and (ii) a foamable organic liquid and (iii) a solid silicone resin both of which are soluble in the propellant. The composition may also contain a further active ingredient, (iv), e.g. with pharmaceutical, cosmetic or toiletry properties, and additives such as-emollients, lubricants, humectants, abrasives and perfumes. The propellant (i) may be a single compound having a vapour pressure at 70 F. of at least 60 p.s.i.g., e.g. CHClF 2 , CClF 2 CF 3 , CCl 2 F 2 , CH 3 CHF 2 , propane or dimethyl ether, or a mixture thereof with less volatile propellants, e.g. CHCl 2 F, C 2 Cl 2 F 4 , CCl 3 F, vinyl chloride, methylene chloride or n- or i-butane, and in general constitutes 2-60% by wt. of the total. The foamable liquid (ii) may constitute 40-95% by wt. of the total and may itself be the active ingredient; specified liquids include hydrocarbon oils, vegetable oils, fatty acids and esters thereof, aliphatic alcohols, polyalkylene glycols, liquid surfactants, mixtures of chlorinated hydrocarbons and mineral oil, methyl salicylate or homomenthyl salicylate, and dimethyl silicones. The solid silicone resin (iii) must be present in sufficient quantity to ensure the production of a stable quick-breaking foam: this will generally be 0À1-10% by wt. of the composition. The resins are well-known materials, typically of average molecular weight 5000-8000, and may be provided in the form of solutions in, e.g. toluene, xylene, dimethyl silicone fluids, mineral oil, hexadecyl alcohol, dioctyl phthalate or sebacate or isopropyl myristate. An active ingredient (iv) if present constitutes 0À1-30% by weight of the total, examples being homomenthyl or methyl salicylate, hexachlorophene, zinc oxide, benzocaine, oil of eucalyptus, camphor, anti-perspirants, antibiotics and enzymes.
Patent GB-195685-A (GB)
Title: Improvements in air tight tins or containers for volatile or other substances
IPC: B65D43/02
Filed: 1921-11-29
Abstract: 195,685. Russ, C. Nov. 29, 1921. Frictionally-seated lids.-To facilitate the removal of the lid of a tin or container for blacking or other volatile paste, the rim of the container a is provided with four or more shallow gaps d with rounded ends, distributed around its periphery, the summits of the intervening portions e of the rim all being on the same level.
Patent GB-971387-A (GB)
Title: Friction pads for disc brakes
Inventor: REDMAYNE LEONARD
IPC: F16D69/02
Filed: 1962-08-21
Abstract: 971,387. Brakes. GIRLING Ltd. Aug. 20, 1963 [Aug. 21, 1962], No. 32015/62. Drawings to Specification. Heading F2E. [Also in Division B5] Disc brake pads are formed by moulding (see Division B5) a block of friction material under pressure between two backing plates, curing the moulding and dividing it to form a pair of plates each bonded to a backing plate. The dividing saw-cut may be made parallel with the plates or, to provide tapered pads, be inclined thereto. The friction material may enter holes in the backing plates to provide keys. The Provisional Specification also describes the manufacture of a pair of pads without backing plates by a similar method.
Patent GB-1396400-A (GB)
Title: Metal ingots or pigs
IPC: B22D5/00
Filed: 1972-07-07
Abstract: 1396400 Ingots IRKUTSKY FILIAL VSESOJUZNOGO NAUCHNO - ISSLEDOVATELSKOGO I PROEKTNOGO INSTITUTA ALJUMINIEVOI MAGNIEVOI I ELEKTRODNOI PROMYSHLENNOSTI 7 July 1972 [7 July 1971] 32016/72 Heading B3F A metal ingot or pig having a generally trapezoidal cross-section has, on each of its oblique side faces, at least one tooth 7 and at least one recess 8. When a plurality of such ingots are stacked as shown in Fig. 13, the tooth or teeth of one ingot engage in the recess or recesses of an adjacent ingot which is inverted relative to the first. The recess may consist of a groove 11 defined by side surfaces 12 and the inner surface (9) of the tooth 7. Each side surface 4 may be provided with one tooth and recess located midway along said surface, or there may be a tooth and recess provided at each end of the surface 4. In the latter case, the tooth 7 may be partly formed by shoulders 17 provided at the ends of the ingot, Figs. 9 to 12 (not shown). The smaller of the two parallel faces of the ingot may be provided with flanges 14 and grooves 15 arranged in a staggered manner so that, in a stack of ingots, the flange on an ingot in one horizontal row engages a groove on an ingot in an adjacent row when one of said ingots is inverted relative to the other.
Patent GB-367317-A (GB)
Title: Improvements relating to manufacturing materials composed of rubber, balata or the like, for use, for example, as leather substitutes
Filed: 1931-11-19
Abstract: A material for use for example as a substitute for leather suitable for machine belts, boot soles, &c. consists of rubber, balata, or the like reinforced with the bared vascular network of bark or leaves of plants embedded therein.  The reinforcement is preferably obtained from the bark of a species of Artocarpus, preferably the Artocarpus Kunstleri, known as Kayutarap.  The vascular network is obtained by removing the skin of the bark, treating the latter to remove the tannin by extraction or by a fermentation process, and then opening the bark to leave a coarse vascular network by rolling or beating the skinned bark in a wet condition.  The network is then spread with a plastic compound of rubber or balata, and formed into a coherent sheet by pressure, with or without heat.  Several layers of the vascular network may be embodied in the material, preferably disposed with the grain of adjacent layers at right-angles.
Patent GB-1465668-A (GB)
Title: Process for the preparation of ketones
IPC: C07C253/00
Filed: 1975-08-01
Abstract: 1465668 Ketones BAYER AG 1 Aug 1975 [2 Aug 1974 11 April 1975] 32254/75 Heading C2C Ketones are prepared by reacting, in the presence of a quaternary ammonium salt and a base, an unsaturated compound of formula where R<SP>1</SP>, R<SP>2</SP> and R<SP>3</SP> represent H or optionally substituted aliphatic, cycloaliphatic, araliphatic, aromatic or heterocyclic radicals or carboxylic ester groups; R<SP>4</SP> is CN, -COR<SP>5</SP> or -COOR<SP>5</SP>; R<SP>5</SP> is an optionally substituted aliphatic, araliphatic, aromatic or heterocyclic radical or R<SP>1</SP> and R<SP>2</SP> or R<SP>3</SP>, R<SP>2</SP> and R<SP>4</SP> or R<SP>3</SP> and R<SP>4</SP> may be linked to form carbocyclic or heterocyclic rings, or a compound forming such an unsaturated compound under the reaction conditions, specifically a Mannich base of formula where R<SP>6</SP> and R<SP>7</SP> are aliphatic radicals or are linked together or a #-halocarbonyl compound of formula or where Hal is Cl, Br or I, with an aldehyde or a compound giving an aldehyde under the reaction conditions, specifically an acyloin where R<SP>8</SP> is H or an optionally substituted aliphatic, cycloaliphatic, araliphatic, aromatic or  heterocyclic radical. Exemplified products are decane - 2,5 - dione, undecane - 2,5 - dione, octane - 2,5 - dione, 6 - methyl - heptane - 2,5- dione, acetonyl - acetone, 1,3 - diphenyl - heptane - 1,4 - dione, nonane - 2,5,8 - trione, α- furoylpropionic acid ethyl ester, α-furoylpropionitrile, levulinic acid nitrile, 1-phenyl-pentane- (1,4) - dione, 1,2,4 - triphenyl - butane - 1,4- dione, 2 - phenyl - 1,4 - (2<SP>1</SP> - furyl) - butane - 1,4- dione, 1,3 - diphenyl - 1,4 - dioxoheptane and 1 - (2<SP>1</SP> - furyl) - 2,4 - diphenyl - 1,4 - dioxobutane.
Patent GB-230570-A (GB)
Title: Improvements relating to roller heads for gill spinning frames
IPC: D01H5/22
Filed: 1923-12-27
Abstract: 230,570. Barbour, W. T. Dec. 27, 1923. No Patent granted (Sealing fee not paid). Rollers and roller heads. - An auxiliary roller D is pressed against the drawing-roller C of a gill spinning-frame by means of an adjustable spring d<2>, so that the fibres are held in the form of. sliver at this point and pass directly from the nip thereof to the thread plate and flyer. The material passes over a guide or steadying roller A.
Patent GB-717482-A (GB)
Title: Process for the recovery of sulphur from hydrogen sulphide
IPC: C01B17/04
Filed: 1952-12-19
Abstract: In re-covering sulphur from hydrogen sulphide by interacting hydrogen sulphide and sulphur dioxide in two catalytic stages using a granular catalyst, the first stage being carried out at a temperature of about 300 DEG C. or higher such that sulphur is produced as a vapour and the second stage being carried out at a lower temperature such that sulphur is deposited on the catalyst, sulphur being separated from the gases leaving the first stage which are then passed to the second stage, the granular catalyst is passed continuously in gravity flow successively through an upper chamber in which the second stage reaction takes place an intermediate chamber in which the first reaction takes place, sulphur being vaporized off the catalyst, and a lower chamber in which the catalyst is cooled, the catalyst being thereafter lifted back into the upper chamber.  The hydrogen sulphide is reacted with sufficient sulphur dioxide to convert all the hydrogen sulphide being treated to sulphur and water vapour assuming complete reaction, i.e. in a ratio of hydrogen sulphide to sulphur dioxide of at least 2 : 1 by volume.  The catalyst may be alumina, bauxite or bauxite promoted with iron oxide.  The temperature in the second stage reaction may be maintained at 150 DEG C.  A gas lift may be used to transfer catalyst from the lower chamber to the upper chamber and catalyst fines which form during operation may be separated from the catalyst during disengagement of the gas used for lifting the catalyst.
Patent GB-817695-A (GB)
Title: Method for preparing synthetic rubbery polymer
IPC: C08F236/10
Filed: 1956-10-24
Abstract: Isoprene is copolymerized with styrene or butadiene in the presence of metallic lithium and/or a lithium hydrocarbon.  The copolymers preferably contain 70-95 weight per cent of isoprene and correspondingly 30-5 per cent of comonomer.  Metallic lithium is used as a finely divided suspension in petroleum jelly or a mineral oil or paraffin boiling above 200 DEG  C.  Lithium hydrocarbons which can be used include various alkyl-, aryl-, and aralkyl-lithiums and polylithiums of which a large number are specified.  The amount of catalyst may be such as to provide 0.001-1.0 gram as lithium element per 100 grams of monomers. Temperatures 0-100 DEG  C. can be used; vapour or liquid phase polymerization is employed according to the temperature and pressure.  Bulk polymerization or solution technique, using as the inert solvent pentane, hexane, heptane, petroleum ether, benzene or cyclopentane, are preferred.  Oxygen, other components of air and water, ethers, esters and amines should be excluded from the reaction.  The monomers should be pure, isoprene of at least 90 mol. per cent purity being preferred and monomers and solvent are preferably passed through a silica gel column when charging to the reactor.  Charging may be done in vacuum or under argon or helium, and about 10 per cent of the charge may be vented to drive off any oxygen which may be present and the reactor is sealed. Reaction times of 3-60 hours are used.  The product is dipped into methanol or isopropanol containing an antioxidant; this destroys the catalyst and precipitates the polymer.
Patent GB-484143-A (GB)
Title: Improvements in or relating to artificially cooled high-pressure mercury-vapour discharge tubes
IPC: H01J61/82
Filed: 1937-11-24
Abstract: 484,143. Metallic - vapour apparatus. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Nov. 24, 1937, No. 32407. Convention date, Nov. 27, 1936. [Class 39 (i)] In an artificially cooled high-pressure mercury vapour discharge tube 1 having solid electrodes extending but slightly from a vaporizable amount of mercury or amalgam 6 which partly surrounds them, the cross-sectional area of that part of the anode 3 which extends from the metal exceeds the area of that part of the cathode 2 which extends from the metal. The tube operates on D.C. and the anode is made larger for better cooling. Preferably the area of the anode is 1À5-5 times that of the cathode. A water-cooling jacket 7 surrounds the tubc. In the form shown, the envelope has internal and external diameters of 2 and 4 mms. The diameters of the cathode and anode are 600 and 1,000 microns respectively and these electrodes are 12À5 mms. apart and protrude by distances of 0À5 and 1-5 mms. respectively from the metal surface. The starting gas is argon at 50 mms. and when working at a current of 2 amps. on 500 volts the pressure is 100 atmospheres and the load 800 watts/cm.
Patent GB-1180106-A (GB)
Title: Improvements in or relating to the Production of Tubular Elements provided with a Closed End.
Inventor: BIGINELLI ORESTE
IPC: B21J5/10
Filed: 1967-07-14
Abstract: 1,180,106. Extruding; forging. O. BIGINELLI. 14 July, 1967 [12 May, 1967], No. 32499/67. Headings B3H and B3P. A tubular steel element having a closed end 1 3 , Fig. 4, is formed by deforming a steel block at 700-750 C. in a first die 3, Fig. 2, by a first ram 2 to form a blank which is further deformed without reheating using a second die 9 and ram 8. In one embodiment, the block (1) positioned at the bottom of the die 3 is widened to form the blank 1 2  by the ram 2 having a detachable contact head 5 1  of tunsten carbide or high-speed steel. The blank 1 2  is then deformed in the second die 9, having a bore diameter corresponding to the maximum diameter of the blank, by the ram 8 of the same diameter as the diameter 5 3  of the ram 2. Each die is provided with an extractor 4. In another embodiment, the initial blank is formed from a block (1), (Fig. 5, not shown), having a diameter equal to the bore diameter 31 of the die by a ram (2 1 ) which displaces part of the block into the smallest diameter (3 2 ) of the die.
Patent GB-821071-A (GB)
Title: Improvements relating to vegetation-cutting implements
IPC: A01B1/16
Filed: 1956-10-26
Abstract: 821,071. Scythes. NORTH, R., and KINSMAN, H. J. A. Oct. 16, 1957 [Oct. 26, 1956], No. 32764/66. Class 6(1). A scythe for cutting water-weeds comprises an elongated handle 10 to one end of which is secured a plate 19 to which are bolted a pair of scythe blades 17, 18, the general direction of each blade being at an obtuse angle to the handle. The handle 10 has transverse handgrips 12, 13 and a flattened lower end to which the plate 19 is secured by bolts 24. Each blade has a curved back-rib 29 terminating in a tang 32 which is bolted to the plate 19. The angle between the blades is about 128 degrees. The implement may be trailed behind a boat.
Patent GB-328020-A (GB)
Abstract: 328,020. Wright, G. M. Jan. 16, 1929. Speed-controlling systems. - A synchronous motor, driving picture and like telegraphic apparatus, is supplied from the secondary TS of a phase shifting transformer so that small adjustments to its movement may be effected by rotating the secondary relatively to the primaries TP1, TP2.