baber/WOPTO huggingface dataset:
Patent GB-1169602-A (GB)
Title: Porous, Filled Polytetrafluoroethylene
Inventor: LANDI HENRY PATRICK
IPC: C08K3/30
Filed: 1967-01-25
Abstract: 1,169,602. Porous polytetrafluoroethylene sheets. AMERICAN CYANAMID CO. 25 Jan., 1967 [25 Jan., 1966; 28 Feb., 1966], No. 3815/67. Addition to 1,156,802. Heading B5A. [Also in Divisions C3 and H1] Wettable, porous, unsintered, completely fibrillated normally liquid - impermeable P.T.F.E. sheet is made in a process which comprises (a) intimately blending a non-electron conducting filler in an amount up to 98% by weight; (b) milling, preferably at 170-200 C. for  hour-¢ hour; and (c) extruding as by injection moulding or calendering, a mixture of an aqueous dispersion of P.T.F.E. particles which are from 0À05-1À0 Á in diameter with a solvent-extractable, highly viscous resinous polymer such as molten polymethylmethacrylate or polyethylene oxide. Subsequent to extrusion, the sheet-like structure is soaked in a suitable selective organic solvent such as acetone or methyl ethyl ketone to dissolve and remove from the sheet all the viscous resinous polymeric additive. The sheets may then be washed with water and dried e.g. by rolling between blotting paper. Immersion in an alcohol bath renders the sheets wettable by electrolytes.
Patent GB-554317-A (GB)
Title: Improvements relating to the manufacture of complex organic antimony compounds
IPC: C07F9/90
Filed: 1942-03-24
Abstract: 554,317. Organic antimony compounds. WELLCOME FOUNDATION Ltd., and SOLOMON, W. March 24, 1942, No. 3869. [Class 2 (iii)] Organic derivatives of quinquevalent antimony are prepared by reacting in approximately molecular proportions in the cold a pentahalide of antimony or an alcoholate thereof with an aqueous solution of an aliphatic or hydroaromatic hydroxy-carboxylic acid, heating to complete the reaction and finally neutralizing with an alkali or alkaline earth metal salt. The reaction product is preferably isolated by pouring into methyl alcohol. The preferred antimony halide is antimony pentachloride. In examples, (1) antimony pentachloride is added to a cold aqueous solution of gluconic acid, and the product warmed with sodium hydroxide after a short period of warming on the water bath. The product is clarified with charcoal and precipitated with methyl alcohol. (2) As in example (1) using antimony pentachloride methylalcoholate instead of antimony pentachloride. (3) As in example (1) using tartaric acid instead of gluconic acid. (4) As in example (1) using citric acid. (5) As in example (1) using quinic acid. (6) As in example (1) using malic acid. (7) Antimony pentachloride is added to a well cooled aqueous solution of calcium gluconate and the solution neutralized with slaked lime, and worked up as in example (1).
Patent GB-469683-A (GB)
Title: Mounting of gear change levers on automobiles
IPC: F16H59/04
Filed: 1936-02-10
Abstract: 469,683. Controlling motor vehicles. HARDY, W. G., and EVERNDEN, H. I. F. Feb. 10, 1936, No. 4024. [Class 79 (v)] In a vehicle having a gear-box free to rock about a longitudinal axis with reference to the chassis and a gear lever mounted on the chassis at a distance to the side of the gearbox, a ball-and-socket connection is provided between the gear-lever shaft and either or both of the gear lever and the gear striker in the gear-box, such connection permitting relative movements between the gear lever and the gear striker to accommodate the rocking of the gear-box but transmitting fore-and-aft and lateral movements of the gear lever to the gear striker without lost motion. In the construction shown the gear-box H can rock about an axis J and is controlled by a gear lever A mounted in a " gate " B on a quadrant A<1> fixed to the chassis frame A<3>. The gear lever is provided with a circular boss B<1> clamped between flanges B3, B4 on members E<2>, C, slidable and rotatable in bearings E, E<1> on the quadrant. The gear lever is connected to its shaft D by a ball joint comprising a ball-part C<2> on the shaft engaging a corresponding socket on the member C, the two parts being kept in contact by a spring D<1>. The ball C<2> is formed with two lugs D<2> freely spaced between the flanges B3, B4 but fitting snugly in recesses D<3> in the boss B<1> of the gear lever. Thus the shaft D can rock relatively to the gear lever about the ball C<2> by reason of the clearance between the lugs D<2> and the flanges B<3>, B<4>. However, fore-andaft movement of the lever will cause rotation of the shaft D by means of the lugs D<2>, and lateral movements of the lever will cause axial movements of the shaft, the ball C<2> being kept always in contact with the socket by the spring D<1>. The shaft D is connected to the gear striker F<6>, Fig. 5, by a similar ball joint F housed in an extension H<1> H<2> of the gearbox H. A flexible cover H<3> connects the gear-box extension H<2> and a sleeve E<10> on the gear-lever quadrant A<1>. The gear-lever when brought to the neutral position in the " gate," is moved to a central position by a floating spring K, Fig. 5, acting axially on the shaft D. Either the ball joint between the gear-lever and its shaft or between the shaft and the gear striker may be dispensed with.
Patent GB-1042113-A (GB)
Title: Improvements in or relating to x-radiation detectors
IPC: H01J47/02
Filed: 1965-01-29
Abstract: 1,042,113. Ionization counters. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Jan. 29, 1965 [Feb. 3, 1964], No. 4026/65. Heading HID. The window 19 of an X-radiation detector comprises a sheet of a synthetic substance, e.g. polyethylene or polypropylene, having a molecular composition substantially solely of carbon and hydrogen and the thickness of which has been reduced to less than 1 Á by stretching. The detector further comprises a wire electrode 10 supported axially by an insulating disc 9 in a cylindrical metal envelope 6 forming a second electrode. A filling of an ionizable gas, e.g. argon, neon, nitrogen or a mixture thereof, and a quenching vapour or gas, e.g. methane, isobutane, alcohol, a halogen or CO 2 , is constantly renewed through a tube 7 and leaves through apertures 8 in the disc 9. An electron beam from a cathode 1 is focused by electrodes 2 on to a specimen plate 3. The resulting X-rays 4 strike an analyzing crystal 5 and are reflected to a collimator 20 on the window 19. These components are mounted in a vacuum-tight envelope (not shown). X-rays not absorbed by the gas filling leave the detector through an aperture 14 covered by a thin plate 22 of synthetic substance. To detect radiation of different wavelengths the crystal 5 and detector may be simultaneously rotated, the latter at twice the angular velocity of the former.
Patent GB-824394-A (GB)
Title: Method for the desulphurization of pig iron and steel
IPC: C21C1/02
Filed: 1957-02-06
Abstract: Liquid pig iron is desulphurized by adding to a bath of the metal a mixture of a basic desulphurizing agent, and a hydrocarbon which liberates hydrogen and carbon on contact with the bath, the basic desulphurizing agent being brought to a finely divided state and impregnated with the hydrocarbon in the liquid or vapour state.  The basic desulphurizing agent may be an alkali metal, or an alkaline earth metal, carbonate or oxide or a mixture thereof and may also be mixed with a basic slag, and the hydrocarbon may be an oil, a tar or a paraffin.  The mixture may be added during pouring from one vessel to another, by injection in a gas e.g. nitrogen, or during a short blow in a Bessemer converter, the slag being carefully removed before conversion proper starts.
Patent GB-341738-A (GB)
Title: Heat treatment of cast iron
Filed: 1930-02-07
Abstract: Cast iron, preferably chilled white and having a large cementite content, is annealed at about 950 DEG  C. so that it can be roughly machined, hardened by reheating to about 850 DEG  C. and quenching by plunging in oil, and finally tempering by heating to about 200 DEG C. and slowly cooling.  If the cast iron contains 5 per cent nickel, substantial quantities of martensite may be present.
Patent GB-635618-A (GB)
Title: Improved card table
Filed: 1947-02-13
Abstract: 635,618. Folding tables. WILLIAMS, M. Feb. 13, 1947, No. 4187. [Class 52 (iii)] A card table with lateral supports 12 has legs 13, 14 arranged in pairs on opposite sides of the table and secured to pivot bars 15, 16 which are rotatably mounted in the sides of the table. Brackets 17, 18 are fixed to the pivot bars 15, 16 in opposite relation to each other and are connected by a rod 20. The brackets 17, 18 and rod 20 are so arranged that if one leg is moved, the other three will open or close in accordance therewith. Two part hinged braces 21 are pivotally connected to the legs to retain them in the open position.
Patent GB-393030-A (GB)
Title: An improved match box
IPC: A24F27/22
Filed: 1932-02-12
Abstract: 393,030. Ash-trays. McGARRICK, E. J., 99, Saltram Crescent, Maida Hill, London. Feb. 12, 1932, No. 4258. [Class 130.] A match-container 10 having a slot 15 impeded by a resilient member 16 for withdrawal of the matches has a removable trough-like lid 27 for use as an ash tray. The device may be fixed to a wall or other support by the lugs 29, or the match container may be fixed on a stand and the ash tray instead of forming the lid of the container may be fitted into the base of the stand.
Patent GB-649988-A (GB)
Title: Manufacture of nickel carbonyl
IPC: C01G53/02
Filed: 1948-02-13
Abstract: Nickel carbonyl is produced by treating an aqueous solution or suspension of a nickel compound or mixture of compounds, produced by the action of an alkaline reacting substance on an aqueous solution of a nickel salt, e.g. chloride or sulphate, with carbon monoxide under super-atmospheric pressure, say 50-250 ats., and at raised temperature, say 70-200 DEG  C., in the presence of a minor amount of nickel sulphide or cyanide, or of a substance which forms said sulphide or cyanide, e.g. alkali or alkaline earth metal sulphide or cyanide, and also in the presence of a substance of alkaline reaction.  As alkaline substances, there may be used aqueous ammonia, amines, or calcium, sodium or potassium hydroxides.  Sufficient should be present, during the main reaction, to bind the acid released.  The reaction may be effected in a rotary chrome-nickel steel autoclave.  After cooling and release of pressure, the gaseous mixture issuing from the vessel is washed with dilute sulphuric acid, dried with soda lime and calcium chloride, and condensed in receivers cooled with acetone-carbon dioxide snow.  Carbonyl remaining in the pressure vessel is volatilized by a current of nitrogen, and likewise condensed.  The Specification as open to inspection under Sect. 91 discloses also the production by a similar method of cobalt carbonyl, which crystallizes from the reaction liquor upon cooling and acidification.  This subject-matter does not appear in the Specification as accepted.
Patent GB-480483-A (GB)
Title: Improvements in or relating to television systems
IPC: H04N5/257
Filed: 1937-02-12
Abstract: 480,483. Television. STANDARD TELEPHONES & CABLES. Ltd. Feb. 12, 1937, No. 4299. Convention date, July 23, 1936. [Classes 40 (iii) and 40 (v)] Scanning a subject 1 produces signalling- current together with unwanted currents due to fluctuations of an illummant 2, and the unwanted currents are neutralized under the control of the fluctuating light. The photoelectric cell 9 produces image currents together. with a component of double the frequency of the supply 3 3 to the illuminating lamp and sidebands due to modulation, and these currents are amplified by a circuit A. An auxiliary light-sensitive cell 20, which is illuminated directly by the lamp 2, produces a current which is amplified by a circuit 21 and adjusted in phase by a variable condenser 23. These currents vary the resistance of a carbon microphone 15 in the amplifier A to neutralize the currents which are due to the fluctuating light on the field of view.
Patent GB-348153-A (GB)
Title: Improvements relating to thread guides, detectors and like wire accessories for use in spinning frames, winding frames and other textile machines
IPC: B65H57/24
Filed: 1930-02-08
Abstract: 348,153. Thread-guides, detectors, drop-pins, and like wire accessories. HALL & CO., Ltd., W., Studley, Warwickshire, and KING, G. B., Chadcroft, Alvechurch, Worcestershire. Feb. 8, 1930, No. 4313. [Classes 120 (ii) and 142 (iv).] The yarn-engaging surfaces of thread-guides, detectors, drop pins, beaming pins and like wire accessories are provided with a frictionless non- corrosive hard surface formed by chromium plating. The guides &c. 10 are plated in a tank 13 having anodes 14 and a detachable cathode bar 15 fitted with a clip support 16. A rubber or like pad 22 may be provided to accommodate articles of different thickness.
Patent GB-1356022-A (GB)
Title: Impact tools or apparatus
IPC: B25D9/12
Filed: 1971-02-10
Abstract: 1356022 Percussive tools DOBSON PARK INDUSTRIES Ltd 21 Sept 1971 [10 Feb 1971] 4326/71 Heading B4C An impact tool including a hammer piston 11 incorporates a chamber 13 containing a compressible fluid (liquid or gas) and cylinder spaces 10a, 10b to which pressure fluid is supplied via a spool valve 21 to effect a piston return stroke. Return of the piston compresses the fluid in the chamber 13 and a high pressure in chamber 13 results in switching of the spool valve 21 to a condition permitting exhaust of the cylinder spaces. Thus the piston is driven on an impact stroke by the compressed fluid. As illustrated in Figs. 1 and 2 with the spool valve 21 in the exhaust condition and pilot valves 29, 30 in their illustrated conditions pressure fluid from line 32 is applied via valve 30 to the valve 21 while pilot valve 29 connects the valve 21 to exhaust via line 28, and the spool 22 is moved to a fluid supply position. When the high pressure in the chamber 13 is attained, on piston return, compressible fluid via lines 31 effects firstly movement of spool of valve 30 to connect the valve 21 via valve 30 to exhaust, and secondly movement of spool of valve 29 to connect the valve 21 via valve 29 to pressure fluid supply line 26. The spool 22 is now returned to its illustrated cylinder exhaust position, and the piston moves on an impact stroke. When the fluid in the chamber 13 reaches a low pressure the spools of the valves 29, 30 are returned to their illustrated positions and the cycle is repeated. Fluid is initially supplied via line 41 and check valve 40 to move the spool 22 to the illustrated position if the valve spool 22 is not in that position. The spring forces urging the spools of pilot valves 29, 30 to the illustrated positions are variable. A manually operable stop/start valve may be located in line 26 or line 32. In a modified tool (Fig. 3) the pressure fluid acting on the spool 22 to move it to the fluid supply position is cylinder exhaust fluid forced from the cylinder via a line 46a connected to the pilot valve 30 by a step on the piston entering a reduced cylinder space 10d. In this tool air is supplied via a one-way valve to space 10c and is compressed by the piston to a superatmospheric pressure to prevent ingress of air from the working area. In a modification of Fig. 3 (Fig. 4, not shown) the exhaust fluid forced via line 46a acts directly on one end of the spool 22.
Patent GB-254993-A (GB)
Title: Improvements in drives for centrifugal machines
IPC: B04B9/12
Filed: 1926-02-16
Abstract: 254,993. Construction Franþaise d' Appareils de Laiterie. Nov. 10, 1925, [Convention date]. Addition to 254,991. Driving, suspending, balancing. - In driving arrangements for centrifugal machines where the machine spindle f is driven from a sleeve a as set out in the parent Specification, a worm l is keyed to the sleeve and is driven by a wheel m mounted on the driving shaft p. A friction clutch may be inserted between the hollow shaft and the machine spindle.
Patent GB-860283-A (GB)
Title: Improvements in or relating to regulating apparatus having a hydraulic servo-control
IPC: F15B9/08
Filed: 1958-02-11
Abstract: 860,283. Fluid-pressure servomotor-control systems. SZYDLOWSKI, J. Feb. 11, 1958 [Feb. 19, 1957], No. 4456/58. Class 135. A control valve for a fluid-pressure servomotor-control system comprises a slide valve, the opposite ends of which are subjected respectively to a force responsive to the parameter to be adjusted and to a force for pre-setting the valve at which the parameter is to be adjusted, an hydraulic device adapted to subject the slide valve under transient operating conditions to a force opposite to the action of the preponderant applied force and another hydraulic device for neutralizing the action of this force under stabilized operating conditions. The input signal from the parameter to be adjusted is fed as a force applied to the right-hand end of the valve slide 2. The pre-setting force is applied to the left-hand end of the valve slide by means of a spring 18, manually adjustable by means of the screw 17. The valve slide 2 is returned to the neutral position after displacement by a fluid pressure follow-up system whereby a differential pressure is applied across the ends of the valve slide to produce a force acting in the opposite sense to the applied force. On displacement of the valve slide to the left, pressure fluid from the input line 10 passages along passage 49 to the servopiston 25, which commences to move to the left. The fluid displaced from the cylinder 26 by movement of the piston 25 causes a differential pressure to be applied across the piston 32. This pressure is also applied across the ends of the valve slide 2 by means of passages 36 and 45, the resultant force tending to move the valve slide back to its neutral position. The restoring force is of a temporary nature since the pressures on the two sides of the piston 32 equalize after an interval through the grooves 32a in the walls of the cylinder accommodating the piston 32. The piston 32 is finally restored to its equilibrium position by the remaining pressure difference equalizing through the variable orifice 41. In another embodiment, the invention is applied as a speed governor for an I.C. engine, wherein the piston 25 regulates a valve in the fuel feed line in response to variations in the engine speed, applied as an input signal to the right-hand side of the valve slide 2. Either the valve slide 2 on the sleeve 3 may be rotated continuously to prevent friction.
Patent GB-1246281-A (GB)
Title: Recovery of zinc
Inventor: ROSE LESLIE
IPC: C01G9/00
Filed: 1968-01-29
Abstract: 1,246,281. Zinc carbonate; zinc sulphate. COURTAULDS Ltd. 28 Jan., 1969 [29 Jan., 1968], No. 4470/68. Heading C1A. Zinc is recovered from an aqueous solution of a zinc salt by adding the solution to an aqueous solution of an alkal metal carbonate or bicarbonate until the pH of the mixture is in the range 6 to 7 forming a precipitate of granular zinc carbonate and leaving zinc ions in solution, then adding an aqueous alkaline solution to the mixture so as to raise the pH to at least 8 to precipitate as the basic carbonate some of the zinc remaining in solution,-which causes the granular carbonate to flocculate and settle. The preferred alkali metal carbonate is sodium carbonate and the aqueous alkaline solution added may be an aqueous solution of sodium carbonate. Before adding the alkaline solution to the mixture, carbon dioxide may be eliminated from it. The aqueous solution of the zinc salt may be the waste spin bath liquor from a viscose spinning process, in which the weight ratio of zinc to H 2 SO 4  is preferably at least 1 : 3. The comparative examples refer to the production of a basic zinc carbonate 3Zn(OH) a 2.- ZnCO 3  by adding the Na 2 CO 3  to the Zn solution and stirring to remove CO 2 , and a basic zinc sulphate 3Zn(OH) 2 ZnSO 4  by the addition of NaOH to solutions containing zinc sulphate.
Patent GB-1594186-A (GB)
Title: Manufacture of isoviolanthrone
IPC: C07C49/665
Filed: 1978-02-06
Abstract: A process for the preparation of isoviolanthrone from 3-bromobenzanthrone in a one-vessel process by reacting the bromine compound with sodium sulphide at an elevated temperature and directly following this by cyclising the reaction product with potassium hydroxide, both reactions being carried out in n-butanol as the reaction medium. The process gives high-grade to very pure isoviolanthrone with high space-time yield. Cyclising requires only half the amount of potassium hydroxide which the prior art processes require. The isoviolanthrone may be used for all applications as a dye and intermediate.
Patent GB-277228-A (GB)
Title: Improvements in pistons for pumps and the like
IPC: F16J1/00
Filed: 1927-02-18
Abstract: 277,228. Miller, E. E. Feb. 18, 1927. Pistons; attaching to rod; packing.-In a piston for pumps &c. of the type in which a rubber &c. packing- ring 21 is expanded by fluid admitted through passages 22 in the piston heads 13, 14, the passages 22 are controlled by the flanges of a rubber &c. ring 23, which also seals the joint between the heads. The latter are secured on the tapered end of the piston-rod by nuts 17, 18. Preferably the heads are recessed, as shown, to form seatings fcr the ends of the packing-ring. Specification 261,253 is referred to.
Patent GB-328694-A (GB)
Title: Improvements in clutches
IPC: F16H61/02
Filed: 1929-02-05
Abstract: 328,694. Soc. d'Exploitation des Brevets Cotal. April 26, 1928, [Convention date]. Divided on 310,462. Drawings to Specification. Clutches, friction.-An electromagnetic clutch is arranged to have a. definite air-gap when disengaged. The invention is shown in the drawing of Specification 310,462 in the clutch 2, 4. An annular disc 33 has a flange 37 which abuts against magnet 2 and is so held apart from the magnet. The armature or movable clutch member 4 is normally held thrust against a shoulder 36 on the disc 33 by springs 34, that is at a fixed small distance from magnet 2.
Patent GB-545982-A (GB)
Title: Improvements in circuits for operating electrical indicating devices
IPC: H02H3/04
Filed: 1941-04-09
Abstract: 545,982. Protective cut-out arrangements. BRITISH THOMSON-HOUSTON CO., Ltd., and LIDDIARD, H. W. C. April 9, 1941, No. 4749. [Class 38 (v)] The contacts A ... F of a number of safety devices are connected in series with the contact or-operating coil X or low-volt release of a circuit-breaker so as to de-energize the latter if any one or more of the devices operates. Each pair of contacts is shunted by the coil a ... f of a relatively high impedance relay, the contacts a<SP>1</SP> &c. of which, when closed, energize the coils of indicators a<SP>11</SP> &c. which have to be reset after operation.
Patent GB-1000277-A (GB)
Title: Improvements in or relating to information storage devices
Inventor: JAMES JOHN BERNARD
Filed: 1962-02-08
Abstract: 1,000,277. Information storage devices. INTERNATIONAL COMPUTORS & TABULATORS Ltd. Jan. 15, 1963 [Feb. 8, 1962], No. 4857/62. Heading H3B. To allow faster operation of an information storage device in which conductors are used both for sensing and for driving a drive current source 6 supplies two drive conductors 4 through a pair of matched non-linear impedances 7 and 8 so that the voltage produced across sense amplifier 11 is limited by the impedances during writing but when the drive conductors 4 are used for sensing the small voltages induced in them find a relatively high impedance across the amplifier 11. Thus the recovery time which has to be allowed after writing is smaller than in conventional circuits where mismatching between the conductors 4 can still produce a considerable voltage across the amplifier 11. In the embodiment shown the invention is applied to a thin magnetic film matrix using bipolar drive currents which necessitate two pairs of diodes 7 and 8 acting as the non-linear impedance devices. The input to the sense amplifier is through a transformer 10. To allow for easier matching of the diodes a potentiometer may be connected between them and the drive current applied to an intermediate point on the resistor. Separate drive sources may be used to produce bipolar drive currents. Specification 942,561 is referred to.