baber/WOPTO huggingface dataset:
Patent GB-1089372-A (GB)
Title: Improvements in or relating to frequency measuring apparatus
Inventor: CLAY DAVID LANGSFORD
IPC: G01R23/00
Filed: 1964-04-17
Abstract: 1,089,372. Frequency detectors. GENERAL ELECTRIC CO. Ltd. April 14, 1965 [April 17, 1964], No. 16000/64. Heading H3A. A method of comparing two nominally equal frequencies comprises producing a form of sawtooth wave of one frequency and sampling it at the other frequency to produce a constant amplitude sawtooth wave at a multiple of the beat frequency, the slope of this sawtooth wave being measured by a differentiating circuit feeding an output meter which indicates the beat frequency. In Fig. 3, which can measure differences of 10<SP>-4</SP> cycles/sec., the input frequency #1 is converted to a sawtooth wave of " acme thread " form having an initial slope 20 equal to a multiple n (e.g. 10) times that of the equivalent symmetrical wave. The other input #2 is multiplied in unit 31 by the same multiple n and converted by unit 32 into two anti-phase pulse trains of frequency n#2. These two pulse trains open respective gates 23 and 24 to sample the initial slope 20 at ntimes the beat frequency. to produce waveforms a or b according to whether the frequency difference is positive or negative. These wavefors are differentiated by circuits 25 and 26, one of which feeds the output meter 27 according to the state of contacts 28 and 29 of relay 38. Gates 33 in the path of pulses from unit 32 are opened by bi-stable circuits 35 set by pulses from the pulse former 21 and re-set by the outputs of the gates via delay elements 37. Detectors 36 change over relay 38 when necessary so that as one set of pulses from unit 32 drifts away from the slope 20, the other set of pulses is made operative via relay 38 and its contacts 28 and 29. A check circuit for the beat period comprises a 1 cycle/second generator feeding a counter 42. via gate 43 controlled by a bi-stable circuit 44 triggered by a further contact 45 of relay 38. Thus alternate beat periods are counted, giving the number of seconds per beat cycle.
Patent GB-414874-A (GB)
Title: Improved device for operating discharge tubes having incandescent cathodes
IPC: H05G1/00
Filed: 1933-06-02
Abstract: 414,874. Switching systems for vacuum &c. apparatus; discharge apparatus; transformers ; switches. MULLER AKT.- GES., C. H. F., 24, R÷ntgenstrasse, Hamburg, Germany. June 2, 1933, No. 16032. Convention date, June 16, 1932. [Classes 38 (ii) and 38 (iv).] Hot cathode discharge tubes, e.g., X-ray tubes 3, supplied from high - tension lines 1, 2 are normally isolated from these lines and are connected thereto by switch members 11 operated by an armature 8 energized by the flux of the transformer 6 supplying the heating-current of the individual tube when the primary circuit of the transformer is closed. In a modification, Fig. 2, an insulating-tube 15 is provided with flanges between which the primary 18 of the heating-transformer is mounted, the secondary winding 17 being arranged inside the tube on a laminated core 16, whilst the flux path is completed by a laminated magnetic shield 27 surrounding the coil 18. A rod 21 of insulating- material passes loosely through the core 16 from end to end of the tube 15 and at its ends are secured bell crank levers 22, 23 which operate movable contact members 24, 25 mounted inside globes 19, 20. A block 26 of ferro-magnetic material is secured to the rod 21 so as to displace it axially when the transformer 18 is energized. The contacts 24, 25 cooperate with fixed contacts, not shown, and are connected to the H.T. terminals of the X-ray or discharge tube so that the arrangement is only under H.T. when the switch contacts are closed.
Patent GB-508254-A (GB)
Title: Improvements in and relating to conveyors
IPC: B65G47/252
Filed: 1938-05-30
Abstract: 508,254. Endless-chain conveyers. BHITISH MATHEWS, Ltd., and HALL, F. J. May 30, 1938, No. 16078. [Class 78 (i)] Apparatus for turning over articles on a moving conveyer comprises means which lift each article from the conveyer and cause it, when in the lifted position, to turn through an angle of 180‹ so that it returns to the conveyer in reversed position. The apparatus comprises sets of arms a, d which are secured to pivot pins b, e.. The arms a pass between the components of the conveyer c, and the arms d pass between the arms a, the movements being synchronized by connecting the pivot pins by chain-andsprocket gearing g. The pivot pin b is rocked by a driving pulley i through cranks h, k and a link j. Two turning mechanisms may be used connected by a link l when it is desired to restore the articles to their initial position after dirt, &c. has been discharged into the box p after the first reversal. An inclined plough m, Fig. 2, directs each article to a stop n, from which it is released in time sequence by a cam-actuated pusher o, and fed forward by the conveyer until it is arrested by the vertically-disposed arms d in position above the horizontally disposed arms a. When the arms turn, the arms a lift the article and turn it through an angle of 90‹ while the arms d retain it in position. As the arms d approach the horizontal, the partially turned article is deposited on them and is pushed along them by the arms a until it tilts over the pivot pin e and falls on to the conveyer in reversed position.
Patent GB-1190951-A (GB)
Title: Multi-Throw Die-Quenched Crankshaft and method of Heat Treatment therefor
IPC: F16C3/04
Filed: 1967-04-07
Abstract: 1,190,951. Heat-treating crank-shafts. CATERPILLAR TRACTOR CO. April 7, 1967 [May 26, 1966], No. 16086/67. Heading C7N. A low-carbon steel multi-throw crank-shaft is furnace-heated to austenitizing temperature and is then supported in a die-quenching fixture while water is sprayed through the dies on to the crank-shaft journals and fillets and the entire crank-shaft and fixture is immersed in a water filled quench tank; as an alternative to the use of the tank coolant may be sprayed all over the crankshaft, when treated in this way a crank-shaft of steel containing 0À24 to 0À4%of carbon is hardened over its entire outer surface to Rockwell C44-54, and has a hardness depth of 0À06 to 0À2. Apparatus for carrying out the process of the invention is disclosed in Specification 1,190,952.
Patent GB-218097-A (GB)
Title: Improvements in and relating to dust collectors or separators and the like
IPC: B04C1/00
Filed: 1923-06-21
Abstract: 218,097. Davidson & Co., Ltd., and Whitmore, J. June 21, 1923. Density separators.-A dust separator has a channel of spiral-helical form as shown in Fig. 1, or of flat spiral form as shown in Fig. 2, with a pocket 3 having an entrance tangential to the side of the passage for intercepting the dust. The duct 5 conveys the dust to the receptacle 6, which may be of the type described in Specification 196,537, and the clean gas emerges at the outlet 2. The receptacle 6 permits the flow of some air with the dust and further separation occurs in the receptacle. In other modifications, the separating channel has the form of a simple helix or a scroll. The entrance to the pocket 3 may be formed on more than one side of the channel and a fan or blower may be used to assist the flow of gas. A number of pockets may be employed and may be connected to different dust receptacles or all may be connected to the same receptacle.
Patent GB-292937-A (GB)
Title: Method for increasing the yield point in hollow bodies from steel alloys, to which anincrease in the yield point cannot be imparted by heat treatment, particularly in hollow bodies from austenitic steel alloys
IPC: C21D7/12
Filed: 1928-06-05
Abstract: 292,937. K.rupp Akt.-Ges., F. June 23, 1927, [Convention date]. Drawings to Specification. Hoops and rings.-In the manufacture of an article such as a protection cap for the windings of a turbo rotor, steel alloys, whose yield point cannot be increased by heat treatment, e.g. an austenitic nickel-manganese steel, are hot worked by rolling, forging, &c. to hollow form and machined to form an over-sized body which is then expanded, as by a mandrel, to induce a stress in excess of the original yield point. The body is finally machined. Specification 154,555, [Class 83 (iv), Metals, Working], is referred to.
Patent GB-988156-A (GB)
Title: Tamperproof carton
Inventor: ANDREWS DAVID BURTON
IPC: B65D5/10
Filed: 1962-04-30
Abstract: 988,156. Tamper-proof cartons. AMERICAN CAN CO. April 30, 1962, No. 16352/62. Heading B8P. A tamper-proof carton is provided with locking means comprising a female slit 40, having a central segment 40a in a closure flap 32 and terminal segments 40b tapering towards and into the hingedly connected panel 26, and a male tab 45 connected to a second closure flap 31 by a throat portion 45b, said tab having a width equal to the length of the slit taken along a line passing through the ends thereof. The tab 45 is set back from the edge 31a of the flap 31, as shown in Fig. 3, so that when it is inserted in the split 40, extensions 45a pull back under the flap, thus preventing removal of the tab 45.
Patent GB-664203-A (GB)
Title: Improvements in and relating to heating by means of radiant heat tubes
IPC: F23C3/00
Filed: 1949-06-20
Abstract: 664,203. Radiant tubes. SOC. ANON. DE COMMENTRY, FOURCHAMBAULT & DECAZEVILLE. June 20, 1949 [June 18, 1948], No. 16362/49. Class 51 (i). Heating apparatus comprising a radiant tube having a burner at one end having conduits for separately supplying fluid fuel and a comburent, a plurality of further conduits being provided having communication at different places with the interior of the radiant tube for the supply of either further fluid fuel or further comburent, regulating means being provided in each conduit. The burner 2 of the tube 1 is supplied with fluid fuel by a pipe 3 and comburent, e.g. air by another pipe 5. Comburent passing from a pipe 4 to branch tubes 7, 7<SP>1</SP>, 7n is also supplied at intervals along the tube 1 through orifices 9, 9<SP>1</SP>, 9n or tubes (not shown) projecting into the radiant tube 1. Controlling valves 11, 12, 13, 13<SP>1</SP> are placed in these air supply tubes. Products of combustion escape from the opposite end 14 of the tube 1 to the burner 2 and may be recirculated to the radiant tube 1. In an alternative construction according to the Specification as open to inspection under Sect. 91, air may be supplied to the radiant tube through a valve-controlled tube which is arranged axially within the radiant tube from the open end towards the burner and is provided at intervals with openings. The tube may enter the radiant tube at the burner end. This subject-matter does not appear in the Specification as accepted.
Patent GB-476342-A (GB)
Title: Improvements in the production of a fuel for internal combustion engines
IPC: C10L3/00
Filed: 1936-06-11
Abstract: 476,342. Combustible gas mixtures. RUHRCHEMIE AKT.-GES. June 11, 1936, No. 16371. Convention date, June 17, 1935. [Class 55 (ii)] The gaseous fuels for internal-combustion engines produced according to Specification 445,315, [Group XXII], or 446,493, are so prepared that resin-forming constituents liquefiable under about 3-6 atmospheres pressure are removed as by stagewise compression or cooling to about -40‹ C.
Patent GB-697361-A (GB)
Title: Improvements in dry gas meters
Inventor: BUTTERWORTH EDWARD
IPC: G01F3/22
Filed: 1951-07-11
Abstract: 697,361. Gas meters. BEGWACO METERS, Ltd. June 26, 1952 [July 11, 1951], No. 16410/51. Class 54 A dry gas meter has two diaphragms operating flag rods q each of which in turn operates a gas transfer valve t in such a way that each valve has a movement in an arc of a circle with the flag rod as axis, the transfer passage in each valve extending or having its maximum dimension in a direction radial to the flag rod axis. Each flag rod is rigidly connected to a flag arm t<SP>1</SP> pivotally connected to a link u coupled to one throw of a double throw crank shaft v vertically mounted in a gear box w and connected to the index mechanism. The valves are provided with pads 10 and pins on lugs 11 by which they are anchored to arms s free to turn about the flag rods and actuated by links x parallel with and of the same length as the flag arms t<SP>1</SP>. The throws of the crank v are made adjustable as a means of ensuring accuracy of the meter while eccentric bushes may be incorporated in the pivotal connections of the link x to enable the valves to be adjusted in relation to their grids. The latter are formed in a manifold k connected by a flange p to the outlet pipe d and to a header integral with the measuring chambers. The meter interior is under gas inlet pressure, the inlet branch c opening into the meter casing. Specifications 678.803 and 684,484 are referred to in the Provisional Specification.
Patent GB-180573-A (GB)
Title: Improvements in or relating to endless tracks for the wheels of road vehicles
IPC: B60B15/00
Filed: 1921-06-15
Abstract: 180,573. Fellowes, W. E. June 15, 1921. Endless - track vehicles.-A flexible metal band b of greater circumference than the wheel is provided on its inner surface with a pluralitv of rows of blocks c, g, of wood or other material, ar ranged in staggered relation so as to provide a continuous track ior the tread of the wheel. In the construction described, three rows of blocks are provided, the outside rows consisting of pairs of blocks c cprosite each other and spaced circumferentially. The blocks c are rigidly screwed to the band b and are provided about the middle with trar.sverse pins f on which are pivoted at one end the blocks g of the central row, the other end having a sliding fit between the adjacent pair of side blocks. The track is maintained on the wheel laterally either by side flanges on the wheel rim or by sectional flanges on the blocks c. The band b may be fitted with a band h of rubber and metal wearing plates i, and the blocks may have wearing plates j. As applied to a twin tyre, the band is made of double width and a central sectional flange is provided to take between the two tyres.
Patent GB-1219205-A (GB)
Title: Carboxylation of phenols and hydroxyaromatic carboxylic acids produced thereby
Inventor: MEEK WILLIAM H
IPC: C07C65/03
Filed: 1968-04-05
Abstract: 1,219,205. Carboxylation of phenols and hydroxyaromatic carboxylic acids produced thereby. FERRO CORP. 5 April, 1968 [7 April, 1967; 14 March, 1968], No. 16453/68. Heading C2C. Hydroxyaromatic carboxylic acids are prepared by carboxylating a phenol in the presence of a solvent at least 15% by weight of which is an aliphatic N,N-dimethylamide having 3 to 10 carbon atoms. The process is preferably carried out in the presence of an uncarbonated metalalk oxide. The invention also comprises carboxylic acids of formula wherein n is 0 or 1; R<SP>1</SP> and R<SP>11</SP> which may be the same or different, are hydrogen, halogen, amino, mono-alkyl or dialkyl amino, hydroxyl, an alkoxy radical having 1 to 15 carbon atoms, an alkyl radical having 1 to 15 carbon atoms, or an aromatic radical having 5 to 20 carbon atoms; and X is a bivalent alkylidene radical having at least 3 carbon atoms, and of the formula wherein R<SP>1</SP> and R<SP>11</SP> which may be the same or different are halogen, amino, mono-alkyl or dialkyl amino, hydroxyl, an alkoxy radical having 1 to 15 carbon atoms, an alkyl radical having 1 to 15 carbon atoms or an aromatic radical having 5 to 20 carbon atoms and wherein one of R<SP>1</SP> and R<SP>11</SP> may be hydrogen. Specified compounds are 2-(4-hydroxy-3-carboxyphenyl) - 2 - (4 - hydroxyphenyl) propane; 2,2- bis (4 - hydroxy - 3 - carboxyphenyl) propane and 7-carboxy-8-hydroxyquinaldine.
Patent GB-968475-A (GB)
Title: Improvements in or relating to transistor amplifier circuits
IPC: H03F3/343
Filed: 1962-04-30
Abstract: 968,475. Transistor switching circuits. SIEMENS-SCHUCKERTWERKE A.G. April 30, 1962 [April 28, 1961], No. 16525/62. Addition to 888,306. Drawings to Specification. Heading H3T. The transistor switching circuit of the parent Specification has the resistor 4 replaced by a non-linear resistor. The resistor may be a diode producing a voltage drop which is less dependent upon output current so that when, for example, an unsmoothed supply is being switched the output transistor remains saturated over a wider range of output current. The invention is also applicable when more than two transistors are cascaded.
Patent GB-552073-A (GB)
Title: Apparatus for screening or conveying pulverulent or broken material
IPC: B65G27/24
Filed: 1941-12-23
Abstract: 552,073. Sifting apparatus ; conveyers. STRAIN, G. H. Dec. 23, 1941, No. 16549. [Class 117] [Also in Group XXX] In screening or conveying apparatus of the type described in Specification 533,438 in which the screen &c. is reciprocated through the medium of a reciprocating mass or anvil to which it is connected by a spring so that at each cycle the screen &c. is successively separated from and brought into percussive contact with the mass, the latter k, Figs. 1, 4, is carried by a pivoted member l which is rocked by the rotary movement of an unbalanced weight p, and is cushioned by adjustable springs m so as to control its natural period of vibration. The screen &c. is supported on links t one pair of which carries a striker w and is connected to the anvil by springs v. The screen may comprise a number of decks, and the frame is provided with a cover h under which a current of air is promoted by the percussive action of the anvil to assist the passage of the material over the screen &c.
Patent GB-165706-A (GB)
Abstract: 165,706. Kohler, J. C. E. Nov. 10, 1920. Harnessing systems; collars, neck. - A harness designed to admit the free movement of the animal's shoulders, forelegs, and other parts, and to ensure maximum pulling force, comprises a strap passing over the neck forward of the withers, the ends meeting underneath at the forward end of a chest, and an underbody strap 25, Fig. 1. The strap 25 is connected at its rear end to straps 34 which connect up with the traces 46. Rings 37, one on each side of the animal, form connections for straps 33, 39, 48, the strap 39 being supported by a ring 9 in the upper part of the neck strap 1. Other straps connect up with a back strap 50 and crupper 51. Breeching as shown dotted may be employed. The various straps may he made adjustable as by buckles. Pads such as 65 are provided to prevent contact of the rings, such as 37, with the body of the animal. Pads 2 spaced apart are provided to bear against the sides of the neck under the upper portion of the strap 1. In a modified arrangement, shown in Fig. 3, two straps 1, 1<a> are used instead of the one strap 1 of the first described arrangement. The traces are omitted, the underbody strap being connected up to draught hooks 73 on the vehicle shaft. The breeching-strap 62 is adjustably carried from a strap 54 passing over the back of the animal.
Patent GB-585610-A (GB)
Title: Hot strength aluminium alloy
IPC: C22C21/06
Filed: 1944-09-04
Abstract: Aluminium base alloys, suitable for apparatus such as parts of high speed internal combustion engines, which are required to operate at 350 DEG C. to 425 DEG C., consist of 4.5-7.5 per cent. magnesium, 0.75-2.0 per cent. of nickel, 0.5-1.5 per cent. of manganese, iron and silicon together less than 0.7 per cent. and preferably less than 0.3 per cent., the remainder being aluminium. The alloy may also contain one or more of the following elements in total not exceeding 1.5 per cent. titanium, beryllium, niobium, boron, cadmium, cobalt, chromium, cerium, lead, molybdenum, silver, tantalum, tellurium, thallium, thorium, tin, tungsten, vanadium and zirconium.  Preferably the alloy is given a low temperature heat treatment for 16-24 hours at 80 DEG C.-350 DEG C., which may be preceded by a solution treatment for 2-20 hours at 350 DEG C.-450 DEG C., after which the alloy may be quenched or cooled in air.  The solution treatment may be used alone.
Patent GB-155318-A (GB)
Title: Recovery of varnish and other ingredients from waste micanite and the like
IPC: C09D7/80
Filed: 1919-07-05
Abstract: 155,318. Whalley, H. C. S. de, and Micanite & Insulators Co. July 5, 1919. Paints and varnishes, removing; resins and resinous compounds.-Scrap micanite and similar insulating materials are treated as follows for the recovery of the resins, and the mica. The scrap micanite is autoclaved with a dilute aqueous solution of ammonia or other alkali, or with a solution of a salt having an alkaline reaction such as borax, and live steam is admitted at a pressure of 4 to 6 atmospheres for 15 to 30 minutes. Under this treatment the varnish is softened and owing to the tendency of the mica to regain its original form before compression. the solvent penetrates between the layers and dissolves the varnish. Alternatively the micanite is autoclaved with water instead of the alkali and the varnish dissolved after this treatment by immersing the mica while still hot in a cold alkaline solution. The strained alkaline solution, preferably after concentration, is then neutralized and heated to precipitate the resins.
Patent GB-681081-A (GB)
Title: Improvements in or relating to dielectric compositions and electrical condensers containing such compositions
IPC: H01B3/20
Filed: 1951-07-17
Abstract: 681,081. Electric condensers. WESTERN ELECTRIC CO., Inc. July 17, 1951 [Aug. 30, 1950], No. 16919/51. Drawings to Specification. Class 37. An electric condenser has as dielectric the product of wool fat known as lanosterol. It is preferably mixed with up to 50 per cent of castor oil, hydrogenated castor, paraffin oil or wax, HB40 (a mixture of partially hydrogenated terphenyl isomers); the mixture is effected at above the melting-point, and cooled slowly, the dielectric constant being dependent on the rate of cooling. The mixture is preferably used to impregnate rolled condensers of metallized paper.
Patent GB-386875-A (GB)
Title: Improvements in or relating to garment fastening means
IPC: A41F1/00
Filed: 1932-06-15
Abstract: 386,875. Wearing-apparel. BROOKES, N. E., 1, Quality Court, Chancery Lane, London.-(Cluett, Peabody, & Co., Inc. ; River Street, Troy, New York, U.S.A.) June 15, 1932, No. 16920. [Class 141.] The strip of material 10 which carries the buttons 18 at the fly parts of garments is turned back at 11 to form a hem and is backed by a similarly turned back strip 12, the various plies being stitched at 17 alongside the stitching 19 of the fastening.
Patent GB-1470829-A (GB)
Title: Pneumatic tyres
IPC: B60C15/06
Filed: 1974-04-18
Abstract: 1470829 Pneumatic tyre bead constructions DUNLOP Ltd 18 April 1974 [20 April 1973] 16960/74 Heading B7C A pneumatic tyre comprising a radial carcass ply 5 and a bead core 7 in each bead, is provided in each bead with a folded chafer 11 which extends radially outwardly beyond the edge of the associated ply turn-up. The steel cord fabric of each chafer is less rigid than that of the carcass ply 5, and the cords in the chafer are preferably disposed at an angle of 15-30 degrees to the circumferential axis of the associated bead core. A secondary reinforcing ply of cords of textile material, e.g. nylon or polyester, may be situated in each bead axially outwardly of the chafer. The chafer may be arranged as illustrated in Fig. 2 or in Fig. 3.