baber/WOPTO huggingface dataset:
Patent GB-952249-A (GB)
Title: Improvements in or relating to transistor amplifier circuits
Inventor: PEARCE PETER SIDNEY
IPC: H03G1/00
Filed: 1962-01-31
Abstract: 952,249. Transistor gain control circuits. IRIS PRODUCTIONS Ltd. Jan. 30, 1963 [Jan. 31, 1962], No. 3722/62. Heading H3T. A variable gain transistor amplifier, particularly for television fading, comprises a long-tailed pair S2, S4 with a third control transistor S3 in the common tail, the input signal being applied to one transistor of the long-tailed pair and the control signal to the third transistor. In the Figure, a video signal is applied to transistor S2 via an emitter follower S1 and a gain controlling pre-set network R3, C4. The emitters of transistors S2, S4 are coupled by a reversible electrolytic capacitor C4 to reduce degenerative feed-back and the output from the longtailed pair is taken from the collector of transistor S4 and fed to the output emitter follower transistor S5. The supply voltage for the transistors is stabilized by Zener diode S6. Linear variation of the control current supplied to the base of transistor S3 effects linear variation of the overall gain to zero or cut-off.
Patent GB-838844-A (GB)
Title: Preparation of improved olefin alkylation feeds
Inventor: JONES WILLIAM HENRY
IPC: C07C7/163
Filed: 1959-02-03
Abstract: Polypropylenes having 9 to 24 carbon atoms in the molecule prepared by polymerization of propylene in the presence of phosphoric acid for use in alkylating benzene in the presence of aluminium chloride are purified by a mild catalytic hydrofining at 40-500 DEG  C. and 0-100 p.s.i.g. which leaves the olefinic content substantially unchanged. A tetramer-rich polypropylene fraction is usually employed.  The higher boiling portion of such a fraction usually contains more undesired impurities and may be treated alone and reblended with the remaining portion for alkylation.  The hydrofining may be effected in liquid or vapour phase.  Suitable catalysts are platinum, nickel or palladium on silica, silica-alumina, alumina, kieselguhr or charcoal and residence times of 5-250 minutes may be used.  The olefine content is preferably changed by less than 1%.
Patent GB-427353-A (GB)
Title: Improvements in or relating to devices for opening and dispensing oil from hermetically sealed cans
IPC: B67B7/48
Filed: 1934-02-05
Abstract: 427,353. Piercing and pouring device for oil &c. cans. FARRER, J. O., 27, Chancery Lane, London.-(Continental Can Co., Inc. ; 100, East 42nd Street, New York, U.S.A.) Feb. 5, 1934, No. 3789. [Classes 21 and 66] A piercing and pouring device for sealed oil &c. cans comprises a body part provided with a pouring spout and adapted to engage an end of the can and the adjacent wall thereof and a cutter arranged to be over the spout when in pouring position and adapted to form in the can wall near the supported end an opening through which the contents are dispensed. The device shown in Fig. 5 comprises a base 1, curved side wall 2, part of which is extended to form a support 25, and an extension 8 affording a tubular housing 9 and a spout 13. Guided in the housing is a tubular cutter 14, the lower wall of which is provided with an opening 22 which registers with the spout opening when the cutter is caused to move inwardly to cut the can by pressure on the head 15, the outer part of the cutter being fitted with a core 23, the inclined face 24 of which serves as a guide for the outflowing liquid. Fig. 9 shows a form in which the cutter is fixed, the can being slid laterally into the device 1, 2 and held in position if necessary by one of a set of appropriately shaped clamping plates engaged with the ends of the wall 2, A flange projecting inwardly from the lower edge of the wall 2 may be substituted for the base 1.
Patent GB-781370-A (GB)
Title: Apparatus and method for the conversion of gaseous fuels
IPC: C10K3/04
Filed: 1956-02-07
Abstract: 781,370. Gas manufacture. COMPAGNIE GENERALE DE CONSTRUCTION DE FOURS. Feb. 7, 1956 [Feb. 7, 1955; May 3, 1955], No. 3807/56. Class 55 (2). Gaseous hydrocarbon is converted into a combustible gas of lower calorific value by controlled oxidation of the hydrocarbon over a catalyst in the presence of water vapour, a mixture of oxygen-containing gas and water vapour being supplied to a reaction chamber through a duct having a constriction adjacent to the reaction chamber, the gaseous hydrocarbon being admitted into said duct at or upstream of said constriction. As shown, air and water vapour are passed downwardly through a duct 4 into a catalyst bed 3, the duct having a venturi constriction 5 into which projects the hydrocarbon gas feed-pipe 8. This pipe is closed at the top, the gas issuing through holes 9 into the air-water vapour stream and being dispersed by elements 6 into the catalyst bed. The duct 4 is protected in the bed by a refractory sleeve 7. The catalyst is preliminarily heated by a burner in the passage 12, the fumes from which escape at 15. The passages 12, 15 are then closed and the air, water-vapour, and gas are admitted. The hot product gas passes up the tube 10 and heats the air and water vapour, the heat-exchange being enhanced by radial vanes on the duct 4 projecting into the tube 10, and by a spiral baffle in the duct 4 which increases the turbulence therein. In a modification, the preheating of the air-water vapour mixture is dispensed with, the duct 4 passing upwardly into the bottom of the catalyst bed and the fuel feed tube delivering into the venturi at the top of the duct 4.
Patent GB-512565-A (GB)
Title: Improvements in frames for the suspension of window curtains
IPC: A47H2/00
Filed: 1938-02-07
Abstract: 512,565. Ventilators. BANKS, M. R., and PENN, W. G. Feb. 7, 1938, Nos. 3833 and 7118. [Class 137] [Also in Group XIV] A louver ventilator for the V-shaped space above curtain supports 6, 7, hinged so as to take up a position parallel to the wall or projecting into the room as shown in Fig. 4, comprises one fixed louver 21 and one movable 22, the latter being connected by pin-and-slot to the horizontal wooden members 4, 5 of the supports.
Patent GB-414679-A (GB)
Title: Apparatus for playing a game simulating golf
IPC: A63F3/00
Filed: 1933-02-08
Abstract: 414,679. Board games. HOWITT, J. K., Ashley House, Park Drive, The Park, Nottingham. Feb. 8, 1933, No. 3834. [Class 132 (ii).] A board game simulating golf is played with a series of multi-sided spinning tops 21, each representing a different club and marked adjacent to each side with the length of the stroke and, in some cases, with the direction also, the side on which the top comes to rest determining which indication is to be used. Fig. 1 shows one hole marked on the board which in its complete form has marked thereon eighteen such areas arranged in relation to one another in the same manner as the holes on an actual golf course, each area being divided into rectangular divisions, disposed longitudinally and transversely to the line of the hole, distinctive colours being used for certain divisions indicating bunkers, fairway &c.
Patent GB-1014135-A (GB)
Title: Pressure fluid actuated valve
IPC: F01B17/02
Filed: 1964-01-29
Abstract: 1,014,135. Fluid-pressure servomotor systems. ROBERTSHAW CONTROLS CO. Jan. 29, 1964 [March 11, 1963], No. 3878/64. Heading G3P. [Also in Divisions F1 and F2] A pneumatic circuit controls the starting and stopping of an engine, the stopping of the engine normally being controlled by an adverse condition such as bearing temperature, engine vibration, shaft speed or the delivery pressure of a pump driven by the engine. Starting. To start the engine 122, a valve 120 is opened to allow air pressure to flow from a supply 110 to a conduit 118 and a normally open valve 152 to conduit 154, a valve 144 preventing flow from conduit 140 to conduit 146. Air in conduit 154 flows through conduits 158, 166, non-return valve 168 and conduits 170, 172 to a manifold 176. A branch 250 from manifold 176 leads to a relay 10 (see Division F2) and the air pressure closes a valve 52 thus allowing the pressure in a passage 210, which is fed from conduit 170 through restrictor 214, to build up and so open valve 144. Air then flows from the supply 110 past valve 144 to conduit 146 which supplies a conduit 130 and a conduit 218, the latter causing closure of the valve 152. The air pressure in conduit 130 is used to start the engine on depression of a valve 262 which causes valve 256 to open and thus supply air to conduits 270 and 272. Manual control valves 136, 274 and 282 control the supply of air to a valve 288, switch 280 and valve 128 respectively. The valve 288 when open supplies air from a supply 114 to a pneumatic starter 132. The switch 280 then controls the ignition circuit and the valve 128 controls the supply of fuel to the engine 122. Air from valve 288 also flows to relay 10 through conduit 220 to close valve 60 and air controlling fuel valve 128 flows to relay 10 to open valve 52. When the engine is started, valve 136 is closed to disconnect the starter and conduit 220 is thereby exhausted to allow valve 60 of relay 10 to open thus connecting conduit 210 to a conduit 210B. Slopping. Each of the relays 102, 104 is responsive to an operating condition which acts through a sensor 192 to control a valve 106. In the event of an abnormal condition, the valve 106 actuates valve 204 to exhaust conduit 210, 210B thus actuating valve 144 to connect conduit 130 to exhaust. This action closes valve 256 and hence fuel valve 128. The engine can be stopped manually at any time by depression of a valve 290 which also causes closure of valve 256.
Patent GB-803976-A (GB)
Title: Improvements in or relating to television receivers
IPC: H04N5/60
Filed: 1956-02-08
Abstract: 803,976. Multiplex radio signalling. COLE, Ltd., E. K., and PICHAL, H. T. Feb. 7, 1957 [Feb. 8, 1956], No. 3889/56. Class 40 (5). In a superheterodyne television receiver, to prevent interference between sound and vision I.F. signals, a first circuit L3, C3 tuned to the sound I.F. is coupled to a circuit L2 tuned to the vision I.F., and a third circuit L4, C4 tuned to the sound I.F. is coupled to the input circuit of a sound I.F. amplifier valve V3. A small capacitive coupling C, between L2 and L4, feeds into the vision I.F. amplifier valve V2 a voltage at the sound I.F. equal and in opposite phase to that normally at the grid of V2, thereby neutralizing the sound I.F. signals in the input of valve V2. In a modification, condenser C is connected between the control grid of valve V2 and a tapping in the first circuit L3, C3, one end of coil L3 being grounded.
Patent GB-838173-A (GB)
Title: Spot weld nut or similar attaching or fastening device
IPC: B65D8/22
Filed: 1958-02-06
Abstract: 838,173. Anchor-nuts. OHIO NUT & BOLT CO. Feb. 6, 1958 [June 6, 1957], No. 3948/58. Class 89(1) An anchor-nut comprises a body B" with a screwed hole 20 therethrough, one side of the body having a smooth flat area 23 to engage a workpiece, and the other side of the body having a recess 22, the bottom of which is flat and parallel to area 23. A pilot 21 is formed around the hole, and the recess diameter corresponds to the correct size of welding electrode, thus acting as a gauge and also locating the electrode during welding of the nut to the work. In a modification, the nut is symmetrical about the axis of the screwed hole and has two recesses.
Patent GB-881653-A (GB)
Title: Polymerisation catalyst and process for polymerising olefins with said catalyst
IPC: C08F4/68
Filed: 1958-02-07
Abstract: Olefins of formula CH2=CHR wherein R is hydrogen or C1-5 alkyl (e.g. ethylene, propylene, butene-, ethylene/propylene mixture), or conjugated diolefins with at least one vinyl double-bond (e.g. butadiene) are polymerized by means of a catalyst which comprises the reaction product of (a) a Friedel Crafts halide (boron trihalides and halides of metals of atomic number greater than 13) which may be partially hydrated e.g. FeCl3, BCl3, BiCl3, BF3 and SbCl5),) (b) a Group II or III metal (preferably aluminium), (c) a C2-5 olefin (preferably ethylene) and (d) a compound of a Group IVa, V or VIa metal, which is preferably a halide of titanium or vanadium, particularly TiCl4, TiCl3, VCl4, or VOCl3.  The weight ratio of components (a) and (b) is from 10:1 to 1:1; one compound, e.g. TiCl3, may function as both components (a) and (d). Specification 864,352 is referred to.  Reference has been directed by the Comptroller to Specification 810,023.
Patent GB-117052-A (GB)
Title: Improvements in and relating to Safety Devices for Elevators and the like.
IPC: B66B5/18
Filed: 1918-03-08
Abstract: 117,052. Waygood-Otis, Ltd., (Otis Elevator Co.). March 8, 1918. Catch gear and like safety retaining - mechanism.-Relates to safety suspending apparatus of the kind described in Specification 7401/08 in which gripping jaws are engaged with the guiderails by screw and lever mechanism, and consists chiefly in means for maintaining the retarding action practically constant notwithstanding variations in the frictional ,engagement of the grips with the guiderails. When the car overspeeds, the governor rope 2, Fig. 4, is held by clamps 32, and a cable 1, fixed to the rope and coiled round a drum D, Figs. 1 and 4, rotates the drum. A screwed sleeve S is rigidly fixed to the drum and engages with two screwed rods 3, prevented from rotating by pin and slot mechanism and each connected at its outer end through a gear wheel 4 and rod 5, described later, to a wedge 6. Rotation of the drum produces a longitudinal movement of each wedge and causes it to force apart the inner ends of pivoted levers 7 whose outer ends carry the gripping-members 9 adapted to engage with the guide-rails 13 and so retard the car. The outer faces of the gripping-members 9, Fig. 3, and the inner faces of the lever jaws are formed at an angle to provide a guide-way for rollers &c. 14 positioned by pins 18. A spring connexion is made between the grips and the lever jaws by means of many coiled springs 24 mounted on extensions of the grips. When the grips are pressed against the rails, the springs are slightly compressed, the grips and rollers moving upwards proportionately. If, however, an irregularity such as a rough place on the rail occurs, the increase in frictional resistance produces a further compression of the springs and upward movement of the grips, the latter allowing the grips to ride over the irregularity and immediately re-engage the rail, so preventing seizure, jolting, &c. and effecting a practically constant retardation of the car. In addition to the governor-controlled actuating means, a.bove described, a handactuation gear is provided on the car in the form of a hand-wheel 28 and gearing 29 adapted to actuate a pair of racks 30 engaging with internally tapped pinions 4 mounted on the oppositely screwed ends of the rods 3 and 5. Rotation of the pinions by this gearing forces the wedges 6 outwards and so operates the grips as before described.
Patent GB-568508-A (GB)
Title: Improvements in or relating to the production of citric acid by fermentation
IPC: C12P7/48
Filed: 1943-03-13
Abstract: Citric acid is made by the fermentation of carbohydrates with Aspergillus Wentii in submerged state.  Suitable carbohydrates are mono- and di-saccharides, starch and inulin.  When molasses is used it is preferably first purified by treatment with bauxite, bone char, activated carbon or ion-exchange phenolformaldehyde or amine-formaldehyde resins sold under the names Amberlite 1R1 and Amberlite 1R4.  The medium is agitated preferably by the introduction of air or air and oxygen under pressure or oxygen at atmospheric pressure and the pH is maintained at 2-3.  Under these conditions the fungus grows in head-like form.  After the removal of the fermented medium, further medium may be added to the mycelium and the process repeated.  In the isolation and identification of Aspergillus Wentii, which occurs in the soil, an agar medium containing peptone, glucose, potassium dihydrogen phosphate, and magnesium sulphate is suitable, but cane sugar purified molasses or other fermentable carbohydrate may be used instead of glucose.  Specification 266,414, [Class 2 (iii)], is referred to.
Patent GB-781102-A (GB)
Title: Improvements in and relating to electromagnetic devices
Inventor: APPLEYARD ALFRED NOEL
IPC: H01F37/00
Filed: 1955-02-11
Abstract: 781,102. Inductors. BRITISH THOMSON. HOUSTON CO., Ltd. Feb. 9, 1956 [Feb. 11, 1955], No. 4149/55. Class 38 (2). An electromagnetic device such as a choke for use with fluorescent lamps has a magnetic core comprising two coaxial and co-extensive sections 2, 4 having an air gap between them in which air gap is positioned. the electrical winding 3 of the device, the core sections being of wound strip construction, the strip being tapered so that the width decreases with increase in core diameter in the inner section 2 and increases with increase in core diameter in the outer section 4. End caps 5 of non-magnetic electrically-conducting material may be provided.
Patent GB-346896-A (GB)
Title: Manufacture of condensation products of the benzanthrone series
IPC: C09B3/04
Filed: 1930-02-07
Abstract: Benzanthrone derivatives.-2-Aroyloxynaphthalene-3-carboxylic acids and derivatives thereof such as the esters and amides, are treated with acid-condensing agents to give the 1-aroyl-2-hydroxy compounds and subsequently ring-closed to give hydroxybenzanthrone carboxylic acids.  According to examples, (1) the benzoic ester of 2 : 3-oxynaphthoic acid is melted with sodium-aluminium chloride, and the product after separating treated with boiling hydrochloric acid followed by sodium carbonate, to give 4-hydroxybenzanthrone-3-carboxylic acid; (2) the benzoic ester of 2 : 3-oxynaphthoic ethyl ester, obtained by benzoylating the ethyl ester, is treated with sodium-aluminium chloride, followed by concentrated hydrochloric acid and sodium carbonate, to give the same product as example 1; (3) the Bz-m-chlorobenzoic ester of 2 : 3-oxynaphthoic ethyl ester is treated with sodium-aluminium chloride and worked up as above.
Patent GB-1444801-A (GB)
IPC: C01G9/02
Filed: 1973-01-26
Abstract: 1444801 Pretreatment of oxidic zinc ores ISC SMELTING Ltd 16 Jan 1974 [26 Jan 1973] 4248/73 Heading C1A Oxidic zinc or zinc/lead ores containing at least 0À2% by weight of arsenic ore pretreated by heating the ore in a kiln or furnace with iron or iron oxide and optionally lime in the presence of a carbon monoxide containing atmosphere and collecting the sublimed fine zinc oxide or zinc/lead oxide mixture produced. Preferably, the ore is heated to above 1000‹ C. for 1-12 hours with 1-20 wt. per cent of iron oxide. The reducing atmosphere may be a 1:4 CO/N 2  mixture or formed in situ by mixing a carbonaceous reducing agent (e.g. coal) with the ore.
Patent GB-880235-A (GB)
Title: New hydrazinium compounds, their preparation, and pharmaceutical preparations containing them
Filed: 1960-02-05
Abstract: The invention comprises hydrazinium salts of the formula <FORM:0880235/IV (b)/1> (wherein R and R1 are alkyl radicals each containing less than 8 carbon atoms, A is an alkylene group of less than 5 carbon atoms, Ar is a phenyl radical substituted by at least one alkyl radical containing less than 8 carbon atoms and X is an anion bearing the charge n).  They may be prepared by reacting chloramine with the appropriate tertiary amine, or by reacting hydroxylamine-O-sulphonic acid with the tertiary amine.  Anions X may be exchanged by metathesis.  Examples are given, and many anions derived from organic and inorganic acids are referred to. Specification 858,488 and U.S.A. Specifications 2,678,258 and 2,710,248 are referred to.ALSO:Pharmaceutical compositions comprise an hydrazinium compound of the formula <FORM:0880235/VI/1> (wherein R and R1 are alkyl radicals each containing less than 8 carbon atoms, A is an alkylene group of less than 5 carbon atoms, Ar is a phenyl radical substituted by at least one alkyl radical containing less than 8 carbon atoms and X is an organic or inorganic anion bearing the charge n) in admixture with a solid or liquid pharmaceutical carrier.  The active compounds are stated to be blood-pressure depressants and to potentiate the effect of adrenaline, noradrenaline and histamine.  Specification 858,488 and U.S.A. Specifications 2,710,248 and 2,678,258 are referred to.
Patent GB-271136-A (GB)
Title: Improvements in the manufacture of glass
IPC: C03C3/089
Filed: 1926-02-15
Abstract: 271,136. Sidler, A. Feb. 15, 1926. Production of metal.-A method of lowering the melting temperature, in making a glass containing alumina and a high proportion of silica, consists in introducing these materials into the batch in the form of compounds which, when decomposed by the melting heat, release the materials in a very active state. The siliceous compound may be an alkali silicate or silicic acid hydrate, and the aluminous compound may take the form of an aluminate or a salt of aluminium such as a chloride or nitrate. The method is used to make a glass which contains over 80 per cent of silica, at least 3 per cent of alumina, not more than 12 per cent of boric oxide, and not more than 4 per cent of alkali oxide The siliceous compound is used either in a crystaline or amorphous state and the batch is ground and well mixed by machine The mixed batch may be pressed into briquettes, with or without a binder, to prevent fine material from being carried away by furnace draughts. The pots or tank blacks must be lined with a material which will not be unduly attacked by the batch, such as zirconia, or they must be made of acid material.
Patent GB-524890-A (GB)
Title: Improvements in or relating to seat reservation indicators
IPC: G09F3/20
Filed: 1939-02-10
Abstract: 524,890. Seat reservation indicators. ANDREW, A. S., and WADE, W. L. Feb. 10, 1939, No. 4383. [Class 118 (i)] A seat reservation indicator comprises an elongated base member 2 curved or adapted to be curved to fit the curved back of a seat, having opposed channel guides 5 at its edges for retaining a front slide member 4, one of the members being marked along the major portion of its length with the word "Reserved" or the like, the letters of which are separated by blank portions of the same width, so that movement of the slide displays or masks the letters of the word. The base member is secured to the seat by a central and two outer screws 3, and the slide 4, of resilient material so that the slide frictionally engages the base, is preferably cambered as shown in Fig. 2 and may be moved by the fingers engaging either the apertures 4a or a central knob 6. The movement of the slide may be limited by tongue 4b engaging the head of screw 3, or the ends of the base may be closed, in which case a lug preferably serrated, on the edge of the slide projects through a slot in the base. The letters may be stencilled in the slide being brought into prominence when moved over coloured patches on the base.
Patent GB-1158365-A (GB)
Title: Catalytic Process for the Manufacture of Pyridine and 3-Methylpyridine
Inventor: SWIFT GRAHAM
IPC: C07D213/12
Filed: 1967-11-09
Abstract: 1,158,365. Manufacture of pyridine and 3- methylpyridine. IMPERIAL CHEMICAL INDUSTRIES Ltd. 26 April, 1968 [9 Nov., 1967 ; 29 Jan., 1968], Nos. 51107/67 and 4498/68. Heading C2C. Pyridine and 3-methylpyridine are obtained by interacting acrolein with NH 3  in the vapour phase in the presence of a catalyst comprising silica and/or alumina impregnated with HC1, HBr, HI or an alkali-metal salt of one of the said acids. The process is preferably carried out in the presence of oxygen. The catalyst may also comprise other metal oxides or metal salts. The acrolein may be in the form of a reaction product containing acrolein, e.g. that obtained by the oxidation of propene. Examples are given for the production of pyridine and 3-methylpyridine.