baber/WOPTO huggingface dataset:
Patent GB-1509161-A (GB)
Title: Process for separation and purification of vinylphenol
IPC: C07C37/72
Filed: 1976-08-20
Abstract: 1509161 Purification of crude vinyl phenol MARUZEN OIL CO Ltd 20 Aug 1976 34732/76 Heading C2C  A process for purifying crude vinylphenol, comprises subjecting said crude vinylphenol at least once to an alkali extraction comprising countercurrently contacting the crude vinylphenol with an aqueous alkali solution together with an organic solvent insoluble or sparingly soluble in water but capable of dissolving the individual components of the crude vinylphenol and selected from an aromatic hydrocarbon, an ether, an alcohol, a nitro compound, a halogenated hydrocarbon, a nitrile, a sulfone, a sulfoxide and a mixture containing at least one of these compounds. The alkali used in the process may be a water-soluble alkali metal or alkaline earth metal hydroxide. The preferred organic solvents have a solubility usually below 8g./100g.H 2 O at 20‹ C. Examples of such solvents are benzene, toluene, xylene, ethylbenzene, tetralin, diethyl ether, dipropyl ether, di-sec. butyl ether, di-benzyl ether, benzyl ethyl ether, alcohols having more than 5 carbon atoms, nitrobenzene or o-nitrotoluene, chlorobenzene, bromobenzene, chlorotoluene, tetrachloroethane, trichloropropane, trichlorotrifluoroethane, benzonitrile, tolunitrile, 2,4- dimethylbenzonitrile, 4 - isopropylbenzonitrile, butyronitrile or capronitrile; dibutyl sulphoxide, methylphenyl sulphoxide, ethyl tolyl sulphone, butyltolyl sulphone, dibutyl sulphone or ethyl isobutyl sulphone.
Patent GB-953282-A (GB)
Title: A process for the production of aryl magnesium chlorides
IPC: C07F3/02
Filed: 1962-09-11
Abstract: Aryl magnesium chlorides are prepared by reacting magnesium and an aryl chloride in the presence of a catalyst of formula: A1RnXm where R is alkyl or hydrogen, at least one R being alkyl, X is halogen, n is 1, 2 or 3, m is 0. 1 or 2 and n+m is equal to 3. R preferably contains 1-8 carbon atoms and X is preferably chlorine, bromine or iodine. Specified catalysts include triethyl aluminium, triisobutyl aluminium, trihexylaluminium, diisobutyl aluminium hydride, diethyl aluminium iodide, diethylaluminium chloride, diethyl aluminium bromide, diisobutyl, aluminium bromide, ethyl aluminium dichloridel ethyl aluminium sesquichloride and isopropyl aluminium diiodide. The catalyst may be prepared in situ by adding aluminium and the alkyl halide to the reaction mixture. The process is preferably carried out by boiling under reflux in an inert atmosphere excluding atmospheric oxygen and moisture during the reaction. Excess of the aryl chloride may be used as a solvent, or a hydrocarbon solvent, e.g. benzene, toluene, xylene, a cycloaliphatic hydrocarbon such as decahydronaphthalene or an aromaticcycloaliphatic hydrocarbon such as tetrahydronaphthalene may be used.
Patent GB-605740-A (GB)
Title: Improvements in or relating to sliding-vane rotary pumps
IPC: F01C21/08
Filed: 1946-12-20
Abstract: 605,740. Rotary pumps. KIRKLAND, D. E. Dec. 20, 1946, No. 34819/45. [Class 110 (ii)] In a rotary pump of the type having an outwardly sliding vane 10, Fig. 2, operating within a stator 18 of the constant chord type, the vane is divided into two portions urged apart in the radial direction by spring means, each portion being rounded at its outer end, and the axes of the inlet andoutlet ports 31, 32 subtend an angle of about 60 degrees so that the ports lie on the same side of the vane during an appreciable part of each revolution. The spring means comprises a number, e.g. five, of helical springs 40 located in sockets in the two vane portions. Alternatively, the helical springs may be replaced by a curved blade 41, Fig. 4, in which case the vane portions may have a tongue-and-groove fit with the blade 41 located within the groove. Specifications 534,510, 591,554 and U.S.A. Specification 1,972,864 are referred to.
Patent GB-348210-A (GB)
Abstract: 348,210. Boiling pans. POLLOCK, A. F., 7, North Road, Surbiton, Surrey, and ALUMINIUM PLANT & VESSEL CO., Ltd., Point Pleasant, Wands worth, London. Feb. 14, 1930, No. 5042. [Class 64 (i).] The inner wall 7 of a steamjacketed pan is secured to the outer wall by a bridge piece 5 with flanges 3, 4, the connection to the pan being made by welding and hammering, the flange 3 bearing against the inner wall of the jacket at xl. The flange 4 is welded to an upward extension 8. The stepping of the flange 3 forms a good finish to the steam space 6. The bridging piece may be used for other metal work joints. The bridge piece 5 is sandwiched between the jacket flange and a top ring 9.
Patent GB-367443-A (GB)
Title: Improvements in and relating to memorandum recording apparatus
IPC: G06M3/06
Filed: 1930-11-21
Abstract: 367,443. Memorandum appliances. GUNN, W., Sunnyside, Macclesfield Road, Wilmslow, Cheshire. Nov. 21, 1930, No. 35058. [Class 16.] An apparatus for indicating a number of successive operations, such as sales of petrol or telephone trunk calls, and for keeping a record of the operations, consists of a casing a, in which is mounted a dial f co-operating with a pointer c, a paper strip i, which is visible through a slot h, being arranged alongside the dial. The strip is mounted on rollers j, k, one of which is preferably geared to the pointer, so as to be rotated thereby. The pointer is turned by means of a knob e to a marking indicating, say, the quantity of petrol delivered, and the value and date of the purchase are written on the strip. A part a<1> of the casing is detachable, to facilitate insertion of the paper strip. In a modification, the dial is replaced by a rotatable drum, which cooperates with a fixed pointer, and is geared to a wheel carrying the paper strip. A series of dials and paper strips may be mounted in one casing.
Patent GB-1396417-A (GB)
Title: Digital operation of control circuits
IPC: H03J1/22
Filed: 1972-07-27
Abstract: 1396417 Control apparatus INTERNATIONAL STANDARD ELECTRIC CORP 27 July 1972 [3 Aug 1971] 35082/72 Heading G4H [Also in Division H3] In a TV or radio control apparatus wherein control pulses U v  are converted to a stepfunction control signal K, means are provided for resetting the level of signal K by one step between successive control pulses. The pulses U v  enter at A and pass through a transistor T2 to increment a binary counter consisting of flip-flops F1-F3 whose outputs BCD range from 111 (count=1) to 000 (count=8); these outputs pass via diodes D7-D9 and conductances G, 2G, 4G to produce a composite step signal which is applied to a transistor T3 from which the final control signal K is derived. To "backstop" by one step, a burst of seven pulses UR is applied to input A2, passing via transistor T1 to the counter; the burst is arranged to be shorter than the interval between successive pulses U v . Diodes D1-D3 ensure that T2 conducts until B, C, D are all 0(count= 8) and diodes D4-D6 ensure that T1 conducts until B, C, D are all 1 (count=1); UR is used to change the count from 8 to 1. A time-delay circuit R1, C3 is provided to ensure that the counter can be stepped through the count = 1 position when "backstepping", except in the case of a change of count from 1 to 8 (which can only be effected by the U v  pulses). A lowpass filter C1, C2 &c. may be provided to suppress steep signal variations at the input to T3. The pulse burst UR is obtained from a multivibrator M, Fig. 2 (not shown), which is actuated by a manual, electronic or remotecontrolled switch (TS). Pulses from (M) pass to A2 and to a binary counter and diode combination (F1<SP>1</SP>-F3<SP>1</SP>, D10-D12): the output from (D10-D12) allows a transistor (T4) to connect (M) to a voltage supply until 7 pulses have been generated, a counter output of 000 serving to block (D10-D12, T4) and switch off (M). Examples of the control operations for which the apparatus is suitable are: sound volume, brightness, contrast and chroma control; frequency adjustment or channel selection; wave range switching; and remote, backward and forward control.
Patent GB-486613-A (GB)
Title: Improvements relating to the melting, refining and/or casting of magnesium and its alloys
IPC: C22B26/22
Filed: 1936-12-21
Abstract: A flux for use in melting, refining, and/or casting magnesium and its alloys comprises barium fluoride together with a combination chosen from the chlorides and fluorides of calcium and strontium.  The calcium and/or strontium constituents are such as to approach the eutectic composition.  In an example, the flux consists of 25 per cent of barium fluoride, 60 per cent of calcium chloride and 15 per cent of calcium fluoride.  The flux may be employed in conjunction with sulphur.
Patent GB-862282-A (GB)
Title: A process for the manufacture of metal articles involving die stamping
Inventor: WICK CYRIL
IPC: B21J5/00
Filed: 1959-10-16
Abstract: In making medals, coins &c. involving die stamping, flat mild steel blanks are provided by a halide diffusion process with a ductile iron-chromium alloy layer having a chromium content of 25-30%. Blanks the size and thickness of shillings are packed in a mixture of 65% by weight chromium powder and 35% by weight kaolin in a steel box, a little ammonium iodide is added and the box is sealed.  The box is heated for six hours at 1020 DEG C. to coat the blanks with an iron-chromium alloy containing 25% chromium, 0.002 inches thick, or for twelve hours at 1070 DEG C. to produce the alloy layer 0.005 inches thick.  Ferrochrome powder may be used instead of chromium powder.  Specifications 572,703, 574,737, 575,676, 577,504, 586,241, 586,376 and 646,637 are referred to.
Patent GB-998462-A (GB)
Title: Ethylene oxide recovery
IPC: C07C/
Filed: 1961-09-29
Abstract: A process for recovering ethylene oxide from an aqueous solution containing ethylene oxide, carbon dioxide and soluble inert gases comprises (1) stripping the aqueous solution by heating to give a gas mixture of ethylene oxide, carbon dioxide and inert gases and an aqueous phase; (2) cooling the gas mixture from (1) to condense ethylene oxide and part of the water therein; (3) scrubbing the cooled fraction with water to absorb the ethylene oxide; (4) rectifying <PICT:0998462/C2/1> the aqueous solution.  The aqueous solution containing ethylene oxide, carbon dioxide and inert gases is obtained by scrubbing the gaseous products of the catalytic oxidation of ethylene with water.  Referring to the Figure the gaseous products obtained from the oxidation of ethylene with air or molecular oxygen are scrubbed in 1 with 0.5-5 times the weight of product gases of water to absorb ethylene oxide, carbon dioxide and soluble inert gases.  The unreacted oxygen and ethylene are recycled to the reaction zone via 4.  The aq. solution of ethylene oxide is preheated to 90-150 DEG  C. and stripped in 6 by heating with steam directly or by steam coils to form a gaseous mixture of ethylene oxide, carbon dioxide and inert gases and an aqueous phase which is recycled to 1 via 3. The gas mixture is cooled in 8 to 15-50 DEG  C. to condense ethylene oxide and water therein. The cooled gas and liquid mixture is scrubbed with 0.5-5 times its weight of water at 20-60 DEG C. in 10 to absorb the ethylene oxide and remove the carbon dioxide and inert gases.  The aqueous solution of ethylene oxide is pumped via 131 to the rectifying column 151 where the solution is fractionally distilled to give 99.5% ethylene oxide.  The aqueous bottoms are returned to the scrubber 10 via 11.  A suitable gas mixture introduced into 1 contains 0.1-4% ethylene oxide; 0.2% ethylene; 0.10% oxygen; 0.1-10% carbon dioxide and the rest inert gases, at 75-300 DEG C. and 200-600 p.s.i.a. pressure.
Patent GB-967411-A (GB)
Title: Method for production of elongated hollow bodies containing one or more internal webs
IPC: B29C48/90
Filed: 1962-09-17
Abstract: 967,411. Producing hollow bodies having one or more internal webs. J. H. DANZER. Sept. 17, 1962 [Dec. 14, 1961], No. 35300/62. Heading B5A. In a method for the production of elongated hollow bodies containing one or more internal webs by extrusion, the outer wall 1 and one or more internal webs 2 joined to the outer wall are extruded simultaneously, the extruded and still plastic material is drawn away from the extruder at a rate faster than that of extrusion so as to elongate it, the elongated material is passed through a suction operated forming device 4 serving to stretch the outer wall and the or each internal web radially, the formed article then being hardened by cooling, and finally passed through a chamber 5 where it is subjected to alpha, and/or beta and/or gamma radiation, and/or to low or high frequency electrical treatment. As the material leaves the extruded nozzle 3 it may be given a uni-directional and/or two-directional twist in the course of elongation. The internal webs 2 may also be extruded at a faster rate than the outer wall 1.
Patent GB-1458889-A (GB)
Title: Cameras
IPC: G03B19/02
Filed: 1974-08-12
Abstract: 1458889 Collapsible cameras AGFA-GEVAERT AG 12 Aug 1974 [11 Aug 1973] 35422/74 Heading G2A A camera comprises a first body member 1 in which are arranged certain components such as the view-finder or objective, and a second body member 4 slidable on member 1 so that it can cover or uncover the said components, member 4 having one arm extending in the direction of sliding movement and a second arm at right angles thereto. The latter arm 4b is hollow and in the closed position surrounds an end of member 1. As shown, the slider 4 is guided for accurate movement by a rod 5 at one side and at the other side by a tongue 4c on the slider which engages in a groove 1b in the body member 1. The slider has three lugs 4d, 4e, 4f along its long side, and the guide rod, which is fixed to the slider, passes through these lugs and also through two lugs 1c and 1d on the housing member 1. A spring 6 arranged between lugs 1c and 4e tends to urge the slider to its open position. It can be pushed in direction 7, against the spring, to set the shutter, transport the film, and rotate the flash-cube socket, and can be locked in the dosed position if required. A toothed rod 8 may , be arranged to move with the slider, the teeth engaging a gear-wheel 9 which operates the film transport.
Patent GB-1398524-A (GB)
Title: Energy absorbing device
IPC: F16F7/12
Filed: 1971-07-28
Abstract: 1398524 Collapsible steering columns; bumpers WALTON & CO (WOLVERHAMPTON) Ltd 26 Oct 1972 [28 July 1971] 35467/71 Headings B7H and B7J [Also in Division F2] A collapsible steering column or bumper mounting incorporates an energy-absorbing, shock-absorbing or load-limiting device comprising a tube and a plunger, the cross-sectional shape of the interior of the tube being different from the cross-sectional shape of the exterior of the plunger, the plunger having portions which contact the inner surface of the tube and which, when the the plunger is forced relatively into and along the tube, force the tube walls outwards at the places of contact, the actual periphery of the plunger in cross-section or, where the plunger has one or more recesses, the notional shortest periphery around the outermost surfaces of the plunger, being less than the internal periphery of the tube so that when the plunger is forced relatively along the tube the development of tensile stresses in the tube walls is inhibited and the internal periphery of the tube remains constant, or substantially so, in length. A circular-section steel plunger 1 inch in diameter has one end tapered and engaged in a mild steel tube of square cross-section, the wall being # inch thick and the length of the side of the internal square being # inch. Instead of square the tube may have a hexagonal, or other polygonal, section. A square-section plunger may be used with a circular-section tube whose internal diameter is less than the diagonal of the square. A tube with longitudinally-extending corrugations, e.g. twelve, is associated with a circularsection plunger sufficiently large in diameter to engage and deform the inwardly-directed portions of the corrugations. The plunger may be tubular and subject to deformation. The degree of initial interengagement is sufficient to ensure transmission of torque when the device forms part of an axially collapsible steering column.
Patent GB-357427-A (GB)
IPC: G03B17/26
Filed: 1930-11-26
Abstract: 357,427. Photographic film packs. BARMER MASCHINENFABRIK AKT.- GES., 12, Mohrenstrasse, Oberbarmen, Wuppertal, Germany. Nov. 26, 1930, No. 35576. Convention date, Aug. 4. [Class 98 (i).] In a film pack adapter with provision for removing exposed films, the two interfitting trays a, g, Fig. 6, constituting the back and front portions of the container respectively are held together at the upper end by side extension lugs c, Fig. 5, on the part a which are bent over to engage slits in the sides f of the front part g. The upper part of the rear tray a is cut away and replaced by a closure slide k, Fig. 7, of inverted U-shape. The rear face of the slide k has side flanges m, with notches m which engage under the lugs c preventing withdrawal. In the closed position the lower outer edge of the slide k rests on projections r on the back a by the resiliency of the U-formation, which is increased by bulges n in the inner face, and the rear face has to be tilted outwards to draw the slide down over the projections. The slide is fitted with a lining i forming a light trap for the film tabs with the lining s placed on projections t on the inner spring frame d, the projections forming stops for the shoulders of the films. The exposed films are kept in position when the slide is drawn down by projections u on the inner face of the slide.
Patent GB-918856-A (GB)
Title: Improvements in or relating to the erection in the ground of masts or stanchions
Inventor: DAVIES GWYN TUDOR
IPC: E02D27/42
Filed: 1959-10-21
Abstract: 918,856. Ground anchor holes. PIRELLIGENERAL CABLE WORKS Ltd. Oct. 21, 1960 [Oct. 21, 1959], No. 35664/59. - Class 45. A hole for a mast or stanchion in a foundation mass of concrete or the like is formed by placing in position, before the concrete is poured, a sheet of expanded metal bent to the shape of the hole, the mesh being sufficiently fine to prevent the concrete from pouring through but large enough for a small amount to pass to keep the former in position. The sheet 2 is wrapped round circular or rectangular frames 1; in the case of an elongated hole, two or more frames may be arranged in overlapping relation, Fig. 4, and held in place by rods 5, 6.
Patent GB-812582-A (GB)
Title: Ferrous base alloys
IPC: C22C38/54
Filed: 1956-11-22
Abstract: A ferrous base alloy which may be precipitation hardened in the absence of "warm" working (working between 800 DEG C. and 900 DEG C.) contains: Ni 20-40, Cr 10-25, Ti 1.35-5.0, B 0.0006-0.15, C-0.25, Al-2.0, Mn-3.00, Si-2.00, Mo-8.00, W-10, V-2.00, Zr-2.00, Nb-5.0, Ta-5.0 all in per cent by weight, the balance being iron and incidental impurities.  The alloy have a high hot - strength and are suitable for parts in jet-engines, gas-turbines and similar applications.  A specific solution heat-treatment disclosed is-solution treat at about 1800 DEG F. for one hour, precipitate at 1325 DEG F. for 16 hours and air cool.
Patent GB-924108-A (GB)
Title: Improvements in or relating to extrusion worms
IPC: B29C48/38
Filed: 1961-10-04
Abstract: <PICT:0924108/IV(a)/1> <PICT:0924108/IV(a)/2> A worm extruder for organic thermoplastic materials comprises a worm housing provided with a heated melting zone, a zone preceding the heated melting zone, in the direction of flow of the material, which zone is heated to a lower temperature than the melting zone, and a melt supply zone after the melting zone, the worm housing being constructed at least in the region of the lower temperature zone and optionally over its entire length as a unilaterally secured torsion member secured to the exterior of which is a lever serving, in the operation of the worm, to actuate the switching-on and off contact for the drive of a metering device for the material.  In operation, if for example the rate of feed of material rises in relation to the rate of outflow of melt, the position of the solid/liquid interface in the worm housing will shift towards the feed aperture into the lower temperature zone. Rotation of the worm housing constructed as a torsion member (i.e. of a part of the housing or of the entire housing) then takes place, with a corresponding deflection of the switching lever secured on the housing, which controls the feed of material.  As shown (Fig. 1) the worm housing in the region of the lower temperature zone may be provided with a recess for receipt of a needle bearing sensitive to pressure change in the material being conveyed.  Alternatively the worm housing may be constructed over its entire length as a torsion member, as in Fig. 3.  Chips are fed into aperture 1 of housing 2, on to rotating worm 3 and conveyed to melting zone 5 provided with heating jacket 4 or heater 5.  Zone 6 is maintained at a lower temperature than zone 5 by heating means (not shown).  Melt is withdrawn from the melt supply zone 7 by means (e.g. a spinning pump) not shown.  In Fig. 1, recess 9 is filled with needles 10 of a needle bearing which transmits the internal pressure to a clamping ring 11. In Fig. 3 the housing 15 is constructed over its entire length as a torsion member, i.e. as a hollow torsion bar.  Switching lever 12 secured to the housing rotates relatively to the housing 14 and actuates a switching contact (not shown) controlling a metering device for the material.  In the melting of polyamides, variation of output of 0,8% is attained, compared to 15% using conventional apparatus.
Patent GB-833606-A (GB)
Title: Improvements in or relating to starting apparatus for an aviation gas turbine engine
IPC: F02C7/27
Filed: 1957-11-18
Abstract: 833,606. Gas-turbine plant. SHEPHERD, G. R. (Westinghouse Electric International Co.). Nov. 18, 1957, No. 35811/57. Class 110 (3). A gas-turbine plant having turbine discharging through an exhaust pipe and started by means of fluid under pressure discharged through a nozzle on to the turbine rotor has the starting nozzle and the exhaust pipe provided with interengaging support members by means of which the nozzle is detachably supported in the exhaust pipe. A gas-turbine engine jetpropulsion engine is started by compressed-air from a nozzle 27 acting on the rotor blades 20a of the turbine. The air outlet 27b is disposed adjacent the downstream edges of the rotor blades and at the optimum angle for driving the turbine rotor blades. The nozzle 27 is supported in the exhaust collector 15 by a number of interengaging support members 29, 30. The members 29 are in the form of V-shaped elements having a flange 29a attached to the wall of the collector 15 and a smaller inner V-shaped flange 29b in spaced relationship to the collector wall. The members 30 are formed by studs having enlarged heads 30a. Interlocking means 31 are provided for locking the air nozzle in the desired position. The structure 31 comprises separate Z-shaped portions 32, 33 attached to the nozzle and collector wall respectively. To remove the nozzle 27 it is first moved upstream to disengage the flanges 32b, 33b. It is then moved radially inwardly and then rearwardly to disengage the studs 30 from the members 29. The members 29 may be attached to the central fairing if desired.