baber/WOPTO huggingface dataset:
Patent GB-941077-A (GB)
Title: Improvements in and relating to electrical measuring appliances for the measurement of non-electric drive quantities
IPC: G01D5/20
Filed: 1961-03-30
Abstract: 941,077. Measuring electrically; voltage and current measuring. STATNI VYZKUMNY USTAV TELEFONE TECHNIKY PRAHA, and H. R. LOOS. March 30,1961 [March 30,1960], No. 11850/61. Headings G1N and G1U. A transducer 11, Fig. 3, contains a resonance circuit 12,13, the capacitance 12 or the inductance 13, or both of which are varied by a non-electric variable to be measured. The resonance circuit is fed from a generator 16 over a low impedance cable 14 and adjusted "off tune" so that its working point 10 is on a linear portion of the resonance curve Fig. 2. The resonance circuit forms a substantially resistive load and depending on whether the internal resistance of the generator is greatly larger or smaller than this load the voltage across or the current flow in the load is measured at 18 or 19 to indicate the magnitude of the non-electric variable. Preferably a backing off current or voltage, as appropriate, is provided at the indicator so that only variations of the variable are indicated. Voltage and current measuring. An alternating voltage u 1  derived from the transducer 11, Fig. 4, is measured in a meter 25 where the input signal is amplified at 32 and fed over a transformer 26 and rectifier 27 to a pentode 34 forming one arm of a D.C. bridge 34, 35, 36, 37 having a meter 35 connected (if desired) by a switch 40 in series with an oscilloscope loop 39 across the measuring diagonal. A backing off voltage u 3  derived from a potential divider 29-31 is also fed to the pentode 34 so that only variations of the signal voltage are measured. The bridge input signal may also be indicated on a cathode ray oscilloscope fed via a filter 44-47 and terminals 48. When the transducer current is measured, Fig. 5 (not shown) the current is fed through a full wave rectifier to the meter which is also supplied with an adjustable backing off current so that variations only of the transducer current are indicated.
Patent GB-1355946-A (GB)
Title: Door assembly for cartridge tape player
IPC: G11B33/02
Filed: 1973-03-12
Abstract: 1355946 Tape-cartridge players MOTOROLA Inc 12 March 1973 [27 March 1972] 11880/73 Heading G5R The cartridge-receiving opening 38 of a player 10 is covered by a door 50 pivoted about one edge 52 at which it carries indicia describing the functions of neighbouring control members 32, the indicia being concealed when the door 50 is closed but moving into alignment with windows 36 when the door is opened to admit a cartridge 40, Fig. 2.
Patent GB-256670-A (GB)
Title: Improvements in and relating to picture display apparatus
IPC: G09F11/29
Filed: 1925-05-07
Abstract: 256,670. Didcote, E. May 7, 1925. Reel and non-endless web apparatus.-In picture-displaying apparatus of the kind comprising a magazine of curtain rollers disposed at opposite ends of the display frontage, such as is described in Specification 236,245, means are provided for positively unwinding and winding the curtains in transit across the display frontage. The side of the carrier other than that on which is located the traversing mechanism is furnished with skateholding elements 93 housed within bushes 90, 91. Each element 93 is fixed on a shaft 94 carrying a rotatably adjustable drum 97 formed with an external thread 99 over part of its surface. A cable 104 is fixed to and wound round each drum 97, the respective free ends passing over pulleys 105 arranged at the top and bottom of the apparatus and connected together by a spring. A stud 100, on a half-ring 101 slidably mounted on a rod 102, engages each thread 99, the function being to stop rotation of the drums 97 by abutment of the studs 100 against the thread ends, and so position the elements 93 in alignment with recesses 103 in the bushes 90, 91 when the carrier reaches the top or bottom limit, thus enabling the skate to be removed and a fresh one inserted from the intermittently rotated magazine. The skates on the curtain-winding side of the apparatus are fixed to the roller shafts 26, while those on the carrier traversing side are pivoted thereon. By these means spring rollers are not required, the positively-rotated roller of the unwinding curtain effecting through the cable 104 the positive rotation of the winding-up curtain roller. The sides 82, 51 of the carrier are connected by cross-bars &c. 84 secured at the middle to a carriage 85 provided with rolls 87 bearing against a guide-bar 15. Adjustable ties 88 brace the structure and permit vertical adjustment of the sides 82, 51 to ensure the skate-holders on each side registering with the magazine races. The side 82 is provided with a selector lock, which may be controlled by a bell-crank for positioning the traversing curtain rollers, or may be connected by a rotatable shaft to the selector lock of the side 51. The gap-bar 72 may have apertures 81 fitted with plain or coloured glass &c.. which apertures may be in the form of stencilled letters or designs.
Patent GB-183577-A (GB)
Title: Improvements in or relating to fuel for use in internal combustion engines
IPC: C10L1/02
Filed: 1921-04-26
Abstract: Motor spirit comprises a solution of water in benzol and acetone. Ethyl or methyl alcohol and ether may be added.  The water should comprise 8-16 per cent of the liquid.  The preferred composition consists of 60 lb. of ethyl alcohol, 20 lb. of acetone, 10 lb. of benzole or benzene, and 10 lb. of water.
Patent GB-1184497-A (GB)
Title: Enamines and Enaminium Salts and Methods of Preparing them
IPC: G03C1/83
Filed: 1967-08-24
Abstract: 1,184,497. Enamines and their salts. EASTMAN KODAK CO. 24 Aug., 1967 [25 Aug., 1966], No. 12126/68. Divided out of 1,184,496. Heading C2C. The invention comprises compounds of the general formulµ in which R<SP>1</SP> and R<SP>2</SP> each represents an alkyl group, an alkoxycarbonyl group or aryl or substituted aryl group; R<SP>3</SP> and R<SP>4</SP> each represents a hydrogen atom, a C 1 -C 4  alkyl group, a halogen atom or a C 1 -C 4  alkoxy group, and X represents an acid anion. The compounds of Formula I or II are prepared by condensing a cyclopentanone of general formula with a weakly basic secondary amine or an acid addition salt thereof. The compounds of Formula III or IV are prepared by condensing a compound of general Formula I or II with ethylisoformanilide. Examples are given of the preparation of (a) 1-di(ethoxycarbonylmethyl)- aminocyclopentene; (b) 1-cyclopentylidenephenylaminium perchlorate; (c) N-(2,5-dianilinomethylene cyclopentylidene) diphenylaminium perchlorate; (d) 1-cyclopentylidenemethyl phenylaminium perchlorate; and (e) 2-anilinomethylene - 2 - (N - methylanilino) - 1 - phenylimino-methyl cyclopentene.
Patent GB-796028-A (GB)
Title: Improvements in or relating to yielding support structures for mines
IPC: E21D11/18
Filed: 1956-04-20
Abstract: 796,028. Mine roof supports. THYSSENHUTTE. AKT.-GES., A. April 20, 1956 [April 23, 1955], No. 12155/56. Addition to 791,518. Class 20(2) In a pit prop comprising an inner member 7 which rests on a band 6 and which, under load, telescopes into an outer member 1 against the resistance provided by the bunching of the band 6 over pins 4, the outer member comprises an upper part 3, closely fitting the member 7, in a lower part 1a. Thus only this short upper part requires great care in manufacture and can be fixed to props of various lengths.
Patent GB-237673-A (GB)
Title: Improvements in guards or protectors for circular saws and other tools and machinery
IPC: B27G19/02
Filed: 1924-05-17
Abstract: 237,673. Roberts, A. T. May 17, 1924. Guards.-A machine guard comprises a row of plates of channel cross-section individually secured to a flexible carrying member and arranged to overlap one another at their side edges, together with means for adjusting the curvature of the carrying member to suit the saw, gear wheel, &c., to which the guard is applied. U-shaped guard units, having side cheeks 9 are rivetted to a flat, flexible, steel bar 1 fixed midway of its length to a lug 2 of a bracket 3 which is adjustably mounted on a support 6. The end guard units have members 10 with a rounded lip 11 under which the work is passed. Near each if its ends the flexible bar 1 carries a bracket 12 connected by links 13 to a block 16 working on a screwed spindle 17 which is rotated by a handle to adjust the curvature of the flexible bar. The Provisional Specification describes a guard having cheeks integral with the flexible carrying member.
Patent GB-553231-A (GB)
Title: Improvements in reinforced concrete foundations or footings
IPC: E02D27/01
Filed: 1942-08-31
Abstract: 553,231. Columns for buildings. O'CONNELL, W. J. L. Aug. 31, 1942, No. 12246. Convention date, Nov. 6, 1941. [Class 20 (iv)] Strips of reinforced concrete at the foot of spaced stanchions or piers vary in width from a maximum at the points P of application of the loads to a minimum at intermediate points C. The strips may be thicker at the points P than at the points C. The strips may be arranged in rows with transverse connecting pieces between the wider parts of the strips.
Patent GB-580299-A (GB)
Title: Improvements in means for sewing large pieces of material
IPC: D05B75/02
Filed: 1944-06-28
Abstract: 580,299. Sewing-machines. WASSERMANN, F., and UNIVERSAL LEATHER GOODS GO., Ltd. June 28, 1944, No. 12265. Drawings to Specification. [Class 112] Feed by moving machines.-For sewing large pieces of material such as tarpaulins, the work is supported on a stationary table and a sewing machine is mounted on a table on a carriage running along rails and carrying the operator. An electric motor drives, through a treadlecontrolled clutch, the machine and at the same time, through gearing which can be varied to suit the feed of the machine, the wheels supporting the carriage; a second clutch engages a reverse drive for the carriage without operating the machine. Work supports.-A length of material for attachment to the main work-piece may be carried rolled up on a' spindle (which may be provided with a hand-wheel) supported by a bracket at the front end of the carriage; a pair of wires stretched between this bracket and the machine table assist in carrying this material.
Patent GB-831285-A (GB)
Title: Process for the continuous production of longitudinally welded steel tubes
IPC: B21C37/08
Filed: 1957-04-15
Abstract: 831,285. Making tubes; working at specified temperatures. PHOENIX-RHEINROHR AKTIENGESELLSCHAFT VEREINIGTE HUTTENUND ROHRENWERKE. April 15, 1957 [April 13, 1956], No. 12282/57. Classes 83 (2) and 83 (4). A method of making metal tubes comprises welding together a plurality of slabs, heating the bar so formed to 1000‹ C. in a continuous furnace, rolling the bar to reduce its thickness to between one tenth and one twentieth, heating the edges of the strip so formed to welding temperature, deforming and welding the strip to form a tube and heating the tube prior to stretching it in a mill. Metal slabs 1, 300 mm. wide to 50 mm. thick and 10,000 mm. long, the thickness being 20-50 times the wall thickness of the tube to be made, are welded together to form a continuous line 2 which is heated in a continuous furnace 3 to 1000‹ C. After descaling by water pressure at 4, the slab is reduced in a planetary rolling mill 5 to a strip 300 mm. wide and 3 to 5 mm. thick. The strip produced is then polished and may be trimmed at 6 after which its marginal edges are inductively heated to welding temperature at 7. Rollers 8 then form the strip 21 while rollers 9 weld the seam to complete a tube 2<SP>11</SP> which is then reheated to 950-1000‹ C. prior to stretching in a mill 11.
Patent GB-1466179-A (GB)
Title: Isotropic enrichment
IPC: B01D59/08
Filed: 1974-03-20
Abstract: 1466179 Uranium hexafluoride : isotropic enrichment AUSTRALIAN ATOMIC ENERGY COMMISSION 20 March 1974 [23 March 1973] 12311/74 Heading C1A An isotropic enrichment process comprises arranging a liquid solution of a compound of the chemical element to be isotropically enriched and an auxiliary material in a working zone in selected proportions, the compound and auxiliary material being selected such that they have a phase diagram including a portion at which a liquid solution is formed under certain physical conditions of temperature and pressure and another portion at which there exists a solid phase of the compound and a gaseous phase of the compound together with the auxiliary material, altering the physical conditions so that the liquid solution yields solid and gaseous phases, the solid phase being enriched in respect of one isotrope of the chemical element. The compound may be uranium hexafluoride and the auxiliary material tungsten hexafluoride to provide a solid enriched in uranium -235. Perfluorocyclobutane and perfluorocyclohexane are also mentioned as examples of auxiliary materials.
Patent GB-487539-A (GB)
Title: Improvements in copying lathes
IPC: B27M3/20
Filed: 1937-04-30
Abstract: 487,539. Copying-lathes. WINKLE, A. April 30, 1937, No. 12378. Convention date, July 17, 1936. [Class 83 (iii)] In a copying-lathe wherein the work is rotated and fed axially whilst the tracer and cutter or cutters are mounted on a single carrier having transverse reciprocating movement only, the rotary cutter or cutters are driven by one or more stationary motors through belts &c. In one form of lathe the pattern a, Fig. 2, and workpieces b are mounted between centres (not shown), and the tracer c and cutters dare mounted on a carrier 3 transversely movable on balls 5. A spring 6 maintains the tracer in contact with the pattern. The cutters are driven by the stationary motors s through belts t which are tensioned uniformly in all positions of the carrier by jockey pulleys 7. The work pieces b are rotated in opposite directions so as to produce right and left shoe lasts from a single pattern a. In a modified machine the carrier 3, Fig. 3, is suspended by pivots 9 from levers 8 which are supported at their opposite ends by links 12, 14 pivoted respectively above and below the carrier at 11, 15, so that the carrier may move horizontally only. Specification 379,999 is referred to.
Patent GB-1024818-A (GB)
Title: Substituted hydroxybenzoxolans and their use as age resisters for rubbers
Inventor: LEY KURT
IPC: C07D307/82
Filed: 1963-03-28
Abstract: Compounds of the general formula <FORM:1024818/C3/1> in which R1, R2 and R5 represent hydrogen atoms or alkyl radicals or the radicals R1 and R3 may be alkylene radicals connected together directly or through a hetero atom and R4 and R5 are alkyl radicals or alkylene radicals connected together directly or through a hetero atom to form an alicyclic or heterocyclic ring which in the case of a piperazino ring may be substituted in the 4-position by a radical of formula <FORM:1024818/C3/2> are used as age resistors for natural and synthetic rubber.  They may be used for example for protecting butadiene-styrene and butadiene-acrylonitrile polymers and may be used for protecting the crude rubbers and the vulcanizates.ALSO:The invention comprises compounds of the general formula <FORM:1024818/C2/1> in which R1, R2 and R3 represent hydrogen atoms or alkyl radicals or the radicals R1 and R3 may be alkylene radicals connected together directly or through a hetero atom to form an alicyclic or heterocyclic ring; R4 and R5 represent alkyl radicals or alkylene radicals connected together directly or through a hetero atom to form an alicyclic or heterocyclic ring, which in the case of a piperazino ring may be substituted in the 4-position by a radical of formula <FORM:1024818/C2/2> The new compounds may be prepared by reacting an enamine of general formula <FORM:1024818/C2/3> with p-benzoquinone having no substituents in the 2- and 3-positions at a temperature of 0-80 DEG  C.
Patent GB-1211657-A (GB)
Title: Metal etching process for semiconductor devices
IPC: H01L21/316
Filed: 1969-03-10
Abstract: 1,211,657. Semi-conductor devices. R.C.A. CORPORATION. 10 March, 1969 [28 March, 1968], No. 12470/69. Heading H1K. A metal layer on a semi-conductor device is patterned by covering it with an adherent resistant insulating layer, by photo-resist masking and etching the insulating layer, and by using the insulating layer as a mask while etching the metal layer. This method avoids the excessive undercutting often found when a photo-resist mask (which adheres poorly) is used directly on a metal layer. The planar diode shown has a silicon body consisting of a substrate 3 and epitaxially grown layer 2 with diffused P and N<SP>+</SP> regions 1, 16. The P region is formed by diffusion from a deposited borosilicate glass layer. The initially overall deposit of aluminium 7 (or instead gold or tungsten) is separated into the two electrodes for the diode by etching it through the apertured pyrolytically deposited silicon dioxide layer 8 (direct oxidation of silane is used), itself patterned by photo-resist masking and etching. A mixture of HF, NH 4 F, and CH 3 COOH is used for etching the oxide a mixture of HNO 3  and H 3 PO 4  is used for etching the aluminium. The entire surface is then coated with silicon dioxide 12 and both oxide layers etched to expose areas of the metal to which leads may be ultrasonically bonded. Since the silicon dioxide is a stronger mask than the photo-resist, it is possible to simultaneously etch metal layers (on different wafers) which differ in thickness without overetching the thinnest ones.
Patent GB-552895-A (GB)
Title: Improvements in or relating to parachutes
IPC: B64D17/00
Filed: 1941-09-26
Abstract: 552,895. Parachutes. QUILTER, J. R. C. Sept. 26, 1941, Nos. 12499/41, 9483/42, and 12959/42. [Class 4] The canopy of a parachute is provided with a vent jormed by removing a substantial portion of a gore at one side through which air escapes in a substantially horizontal direction to stabilize and direct the the parachute. The effect may be increased by the provision of a curtain or lip extending around a part or the whole of the periphery of the parachute to direct additional air into the canopy. The aperture may be normally closed by an internal panel removable by the parachutist during descent. Fig. 1 shows a parachute in which one of the gores b is cut away to leave only narrow attachment strips b<SP>1</SP> thus forming a triangular aperture extending to the apex of the canopy which need not have a central vent. A curtain d is formed by a series of panels e braced to the shroud lines by lines f and radial panels g as described in Specification 531,884. The curtain d may extend only around a portion of the periphery on the side of the canopy opposite to the vent. A parachute without a curtain d and with a triangular aperture extending up to a ring surrounding a central vent is described, the aperture being covered normally by an internal panel secured by press studs. A cable extends from the apex of the panel to within reach of the parachutist to enable him to strip the panel from the aperture when required.
Patent GB-1183002-A (GB)
Title: Ignition Device for Fuel Burners.
Inventor: REED ROBERT D
IPC: F23Q9/00
Filed: 1968-03-14
Abstract: 1,183,002. Igniting burners. JOHN ZINK CO. 14 March, 1968 [26 May, 1967], No. 12527/68. Headings F4F and F4T. An ignition device for fuel burners such as a flarestaek burner comprises a tubular element 10 divided by a partition 16 into two passages, one of which contains an igniter spark plug 31 and gas is supplied through an orifice 27 and draws air into a member 28 so that an ignitable mixture is delivered into element 10 at a rate greater than the flame propagation rate of the fuel, the mixture in the first passage being ignited by the spark plug to provide a flame which travels down the passage to ignite the mixture escaping from the second passage and form a stable flame in the area 33. A flange 11 with ports 14 is provided near the downstream end of element 10.
Patent GB-1507462-A (GB)
Title: N-heterocyclic substituted benzamides methods for their preparation and compositions containing them
IPC: C07D211/58
Filed: 1974-03-21
Abstract: 1507462 N-heterocyclic substituted benzamides ANTONIO GALLARDO SA 10 March 1975 [21 March 1974 12 Aug 1974] 12572/74 and 35402/74 Heading C2C Novel compounds I [in which R is C 1-6  alkoxy or C 2-6  alkenoxy, R 1  and R 2  are hydrogen, provided that R 1  and R 2  are not both hydrogen, halogen, optionally mono- or di - C 1-6  alkylated amino, alkylsulphonyl, sulphonamido optionally mono- or di-alkylated or acylamino the radical R 1  being m or p to the amido group, R 3  is hydrogen, C 1-6  alkyl or optionally substituted aryl provided that where z>1, then R 3  is hydrogen or two groups R 3  may form a bond with any remaining groups, R 3  being hydrogen, Ar is an optionally substituted aryl, aroyl or monocyclic heteroaryl group, x is 0 or 1, y is 2 or 3 and z is 1 to 6 and with the proviso that when R is C 1-6  alkoxy R 1  is 4-NH 2 , R 2  is Cl or Br, x is 0, y is 2 and (CHR 3 ) 3  is CH 2  Ar is not phenyl optionally substituted in the 3-position by Cl in the 4-position by Cl, Me or NeO or in the 3,4 position by methylenedioxy or a salt or N-oxide thereof] are prepared by reacting a reactive derivative of a compound II with a compound III  and optionally forming the desired salt or N oxide derivative. Compounds I (R 1  or R 2  = NH 2 ) are prepared by hydrolysis of the corresponding CH 3 CONH, CF 3 CONH or ClCH 2 CONH derivative. Compounds I are also prepared by reacting a compound IV with an appropriate halide Hal-(CHR 3 ) 3 -Ar in the presence of a base. Compounds I /R 2  = α-piperidinoacetamido) are prepared by reaction of a corresponding compound I (R 2  = with piperidine. Compounds I prepared are those in which y is 2 and Ar is benzyl (optionally substituted by chlorine or methoxy), thienyl, piperonyl or fluorobenzoyl. Compounds IV are prepared by hydrogenolysis of corresponding compounds I (Ar (CHR 3 ) 3  = benzyl). Compounds III are prepared by reduction of the corresponding oxime. Methyl 4 - acetylamino 2 - methoxy benzoate is prepared by acetylation of p-aminosalicylic acid followed by reaction with dimethyl sulphate and this compound is hydrolysed to the acid or chlorinated to give the 5-chloro compound which is also hydrolysed to the free acid. Compounds II (R 1  = 4-CF 3 CONH, 4- ClCH 2 CONH, 4-CH 3 CONH; R 2  = Cl, R = OMe) are prepared by chlorination. Compounds I antagonise the effects of dopamine or dopaminergic agents and form with a carrier or diluent a pharmaceutical composition which may be administered orally, parenterally or topically.
Patent GB-1430183-A (GB)
Title: Device for the protection of an operators eyes against intensive  radiation
IPC: G02B26/02
Filed: 1973-03-15
Abstract: 1430183 Automatic control of light intensity welding masks AGA A B 15 March 1973 [27 March 1972] 12605/73 Headings G2J and G3R  The intensity of light passing through a variable light transmitting region is regulated to a desired level by a control circuit including a photo-electric element, detecting the light passing through the region, and an oscillator responsive to the element to vary the voltage applied to the region and thus vary the transmission characteristics of that region. The oscillator may include a transistor 10 with multicoil transformer 9 or an operational amplifier with associated resistive-capacitive components. The region 8, e.g. a liquid crystal or a depolarizer with crossed polarizers, may be used in a protective welding screen, goggles or helmet.