baber/WOPTO huggingface dataset:
Patent GB-632933-A (GB)
Title: Magnetic swivel work holder
IPC: H01F7/04
Filed: 1946-08-23
Abstract: 632,933. Magnetic work-holders. CARSON, G. J. Aug. 23, 1946, No. 25247. [Class 60] A swivelled magnetic work-holder of the type which can be positioned angularly with respect to a base or tool comprises a support, aligned journals therein, a permanent magnet holding device having a boss at each end mounted in the journals for rotation. about an axis on the support, means for rendering the holding device operative and inoperative, said means being rotatable bodily as the holding device is rotated, and a handle to operate said means for its intended purpose independently of the rotative position of the holding device. The work-holder comprises bottom and top plates 10, 12, within which is mounted a permanent magnet assembly 16 rotatable within the plates 10, 12, so that the effective flux of the magnet may be turned on or off. The plates 10, 12, which are held together by screws, are secured to bosses 30, 34 which are journalled in supports 28, 32. Independent rotation of the magnet 16 with respect to the plates 10, 12, and of the work-holder with respect to the supports is thus possible.
Patent GB-462337-A (GB)
Title: Manufacture of 2:6-dimethylnapththalene-7-sulphonic acid
IPC: C07C303/06
Filed: 1935-09-12
Abstract: 2 : 6-Dimethylnaphthalene-7-sulphonic acid is obtained when 1 molecular proportion of molten 2 : 6-dimethylnaphthalene is treated with 1\ba1/2\be molecular proportions of concentrated sulphuric acid for a period of more than 8 hours.  The same acid also results when sodium 2 : 6-dimethylnaphthalene-1-sulphonate is heated to 110--120 DEG  C. with 85--90 per cent sulphuric acid.  The product, which is useful as a dyestuff intermediate, may be converted into 2 : 6-dimethyl-7-naphthol by melting with caustic alkali, or into the sulphochloride by treating its sodium salt with phosphorus pentachloride; from the sulphochloride, the sulphamide may be prepared by reaction with ammonia.  Examples are given. Specification 461,894 is referred to.
Patent GB-806470-A (GB)
Title: Improvements in production of titanium
IPC: C22B34/12
Filed: 1957-08-12
Abstract: 806,470. Producing titanium; reducing titanium. NEW JERSEY ZINC CO. Aug. 12, 1957 [Dec. 17, 1956, June 11, 1957], No. 25399/57. Classes 59 and 82(1) Electrolytically deposited titanium in the form of a massive cathode deposit is treated to remove adhering salt and to separate the titanium into relatively pure and relatively impure crystals by crushing the deposit to a mass of coarse aggregates not smaller than will pass through “ inch screen openings, leaching the mass with an aqueous medium, e.g. dilute hydrochloric acid, disintegrating the residual fragments into its component particles in a disintegrater having a scissor-like action between cutting blades spaced apart a distance at least as great as the maximum particle size of the individual titanium particles, maintaining an inert atmosphere surrounding the metal during disintegration, and classifying the particles into a relatively coarse pure fraction and a relatively fine impure fraction. The disintegrater shown comprises bed knives 2 mounted in a cylindrical frame 1, and cooperating knives 3 mounted on arms 4 of a rotatable shaft 5. Feed material is introduced through hopper 6 and treated material passes through screen 7 and hopper 8. Inert gas is introduced through a duct 9. Spacing of the knives may be for example 1/16th inch. Preferably the disintegrated mass is subjected to vigorous agitation in an aqueous medium to cause further separation of individual titanium crystals, the volume of aqueous medium ing 3 to 10 times the apparent volume of the mass of particles. Alternatively, the disintegrated mass may be subjected to a classification only the coarser fraction being then subjected to agitation in an aqueous medium.
Patent GB-262700-A (GB)
Title: Improvements relating to licence displaying devices or holders for use on motor vehicles
IPC: B60R13/10
Filed: 1926-10-13
Abstract: 262,700. Trafford A. Oct. 13, 1926. Addition to 254,143. Label holders. - In a licence holder according to the parent Specification in which an annular section 7 for receiving the licence is secured by cement to the windscreen, the cover 11 is now hinged to the section 7, the cover fitting in the closed position against an annular shoulder 7<c> on the section 7. The cover 11 may be held in the closed position by a spring grip, or by lugs on the parts 7, 11 secured together by a pin or bolt, or a spring tongue 13, with a teat 13<a> which snaps into a depression 11<c> on the section 7, may be formed on the cover 11.
Patent GB-765888-A (GB)
Title: Selective reduction of ketosteroids with yeast
IPC: C12P33/06
Filed: 1954-09-02
Abstract: The invention comprises allopregnan-3a -ol-11,20-dione and a process for the preparation of 3 - hydroxy - substituted cyclopentanophenanthrene compounds other than pregnan-3b ,11a -diol - 20 - one by reacting pregnan - or allopregnan-3,20-dione derivatives having a ketonic or hydroxy group at the 11-position other than pregnan - 11a  - ol - 3,20 - dione with fermenting yeast; the said derivatives must not contain a double bond in the 4,5-position, a dihydroxyacetonic group at the 17-position, hydroxy groups in positions 17 and 21, or an esterified 11-hydroxy group.  A 3a -hydroxy group is formed in the presence of an 11-keto group and a 3b -hydroxy group is formed in the presence of an 11a - or 11b -hydroxy group.  The process is preferably carried out by suspending yeast in an aqueous solution of sugar, and adding the compound to be reduced, for example, dissolved in an organic solvent miscible with water, e.g. ethanol.  In the examples: pregnan-3a -ol-11,20-dione is prepared from pregnan-3,11,20-trione and is converted to pregnan-3a -acetoxy-11,20-dione; allopregnan - 3b ,11a  - diol - 20 - one from allopregnan - 3,20 - dione - 11a  - ol and is converted into the corresponding diacetate; allopregnan - 3a  - ol - 11,20 - dione is prepared from allopregnan-3,11,20-trione; and allopregnan - 3b ,11b - diol - 20 - one is prepared from allopregnan - 3,20 - dione - 11b - ol and is converted to allopregnan-3b ,11b -diol-20-one 3-acetate. Starting compound.  Allopregnan-11b -ol-3,20-dione is prepared by the hydrogenation of 11b -hydroxy-progesterone in the presence of palladium.
Patent GB-171530-A (GB)
Title: Improvements in sprayers or atomizers
IPC: F23D11/10
Filed: 1920-09-04
Abstract: 171,530. Attwood, A. Sept. 4, 1920. Air and gas pressure sprayers. - An atomizer comprises a casing a, which is designed to be fixed to any suitable support, e.g. by the nut c, and is formed with a conical internal seating within which fits the tubular spraying nozzle d which is coned at e to fit the conical seating of the casing a. Liquid and air which mix at the nozzle are supplied to the passages n, o in the outer casing which communicate with grooves m, p in the conical part of the nozzle d which communicate with the passages j, q of the spraying head. The spraying head is provided with usual needle valve k and is retained in the casing a by the screwed collar h.
Patent GB-1299687-A (GB)
Title: Process for the improvement of polyorganosiloxane elastomers
Inventor: DEGEN BRUNO
IPC: C08K3/26
Filed: 1971-04-19
Abstract: 1299687 Polysiloxane elastomers heatstabilized with cerium carbonate BAYER AG 19 April 1971 [1 April 1970] 25637/71 Heading C3T A vulcanizable polyorganosiloxane elastomer comprises 0À001-10 p.b.w. of cerium carbonate per 100 p.b.w. of polyorganosiloxane. Conventional linear polysiloxanes may be used, and conventional fillers, peroxide vulcanizing agents and other additives may be added. The cerium carbonate is preferably of particle size less than 10 microns and is added with the filler. In Example 1 a polydimethylsiloxane containing 0À175% MeViSiO units is mixed with pyrogenic silica and cerium carbonate; in Example 2 a polydimethylsiloxane containing 15% Ph 2 SiO units and 0À12% allyl methylsiloxane units is mixed with fume silica, a 50/50 mixture of hydrolysed Ph 2 SiCl 2  and polydimethylsiloxane, cerium carbonate, and dicumyl peroxide; in Example 3 the polysiloxane of Example 1 is mixed with pyrogenic silica, diphenylsilane diol and dicumyl peroxide.
Patent GB-1473553-A (GB)
Title: Twisting distortion correcting circuitry
IPC: H04N3/233
Filed: 1974-06-10
Abstract: 1473553 Cathode-ray tube circuits HITACHI Ltd 10 June 1974 [11 June 1973] 25651/74 Heading H4T In a television receiver employing a horizontal oscillation circuit 2 (Fig. 3) the frequency of which is controlled by an input voltage (e.g. from an AFC circuit 1) and in which the EHT circuit 5 is supplied from the horizontal output circuit 4, distortion in the displayed picture which is manifest by a "twisting" in the vertical direction and stated to be due to variations in the mean horizontal deflection current caused by the effect of variations in the beam current (when the picture content changes between White-Black-White) on the loading of the horizontal output stage and therefore on the mean horizontal deflection current is corrected by deriving a correction voltage, which is a function of the beam current and whose waveform approximates to that of the mean horizontal deflection current, in a circuit 20 and employing such voltage to control the horizontal oscillation circuit 2 to adjust the phase thereof so that an oppositively directed compensating "twist" is produced in the display. The correction voltage is derived from the collector current of transistor 11 which includes the currents through R.G and B matrixing transistors 8, 9 and 10 respectively together with the current due to the brightness signal supplied at terminal 19. Circuit 20 comprises an integrating circuit R21, C23 which removes the high frequency components and a differentiating circuit R22, C24 and the input impedance of circuit 2 which removes the D.C. and low frequency component and the waveform developed at terminal 25 is the required correction waveform. In a second embodiment (Fig. 4) a measure of the beam current is derived from the fly-back transformer 31 the integrating circuit comprising the capacitor 36 (which also acts of a smoothing capacitor for the EHT) and resistors 32, 33, 34 whilst the differentiating circuit comprises R35 and C37. The conditions giving rise to the "twisting" distortion are discussed with reference to Figs. 1 and 2 (neither shown).
Patent GB-683762-A (GB)
Title: Improvements in process of chlorinating wool
IPC: D06M11/30
Filed: 1948-10-01
Abstract: Wool is chlorinated to reduce shrinkage by treatment first in an acid bath wherein the wool retains an acid content of 0.4-0.6 milliequivalents per gram of wool fibre, and then, for not more than five minutes, in a chlorinating bath of pH 7.2-9 containing an alkaline borate.  The acid bath may be of an acid or acid salt such as sulphuric acid, oxalic acid, hydrochloric acid, or phosphoric acid, or mixtures of sulphuric and oxalic acids or sulphuric and hydrochloric acids; sodium or potassium bisulphate may also be used. A wetting agent such as an alkyl aryl sulphonate may be added to the acid bath.  The chlorinating agent may be sodium, potassium or calcium hypochlorite.  Borates mentioned are those of the alkali metals, such as sodium metaborate, borax and potassium metaborate. Wool fibres mentioned are those of llama, alpaca, or other animal hairs, and blends of wool with other fibres, such as cotton, rayon and nylon may also be treated.  Excess acid in the acid-treated fibres may be neutralized by treatment with alkali prior to treatment in the alkaline chlorinating bath.  The chlorination may be stopped by use of an antichlor, such as sodium bisulphite, after which, if the wool is subsequently to be dyed or bleached, it may be neutralized and scoured, for example in a bath containing soda ash and a fatty alcohol.  Tables are given indicating the preferred concentrations of the solutions used, depending on the percentage wool content of the goods treated and whether or not they are subsequently to be dyed or bleached.  The Specification as open to inspection under Sect. 91 refers also to the use of sodium or potassium carbonates instead of the alkaline borate.  This subject-matter does not appear in the Specification as accepted.
Patent GB-502686-A (GB)
Title: Improvements in or relating to amplifying circuits including electron multipliers
IPC: H01J43/30
Filed: 1937-09-22
Abstract: 502,686. Electron multipliers and circuits therefor. BAIRD TELEVISION, Ltd., and ANDERSON, E. G. O. Sept. 22, 1937, No. 25694. [Classes 39 (i), 40 (iii), and 40(v)] In an electron multiplier acting as an amplifier, for example, for television scanning signals incident on a photo electric cathode 1, a pair of secondaryemitting electrodes 3, 4 have their normal steady potentials in inverse order and the difference of potential between them is variable automatically to control the degree of amplification. Control may, for example, be by a photo-electric cell 6 responsive to "back-scene" illumination to compensate for fluctuations in the light source or may He by rectified incident signals to give automatic volume control or volume expansion. The secondary emitting electrodes may be permeable to the electron stream as shown. Specification 491,773 is referred to.
Patent GB-457292-A (GB)
Title: Improvements in vacuum distillation apparatus
IPC: C10G7/00
Filed: 1935-09-16
Abstract: <PICT:0457292/III/1> A high vacuum still is provided with shields 7 and 8 covering or enclosing parts over which the distilland flows on its progress to the vaporising surface 5 so as to prevent evaporation of any portion of the distilland from taking place, except under short path conditions.  The main distillation takes place between evaporating surface 5 and condensing surface 6, but the shields 7 and 8 may be arranged to act as condensing surfaces so that any evaporation under them produces short path distillation.  The general construction of the distilling apparatus may be of the kind referred to in Specification 428,719.
Patent GB-142743-A (GB)
Title: Improvements in and relating to curling tongs
IPC: A45D1/02
Filed: 1919-10-22
Abstract: 142,743. Rotzel, C. Oct. 22, 1919. Hair-curling appliances.-Self-heating curling- tongs have one or both prongs b made hollow and perforated, and one or both handles a serve as reservoirs for fuel, or as acetylene &c. generators, the supply of fuel being controlled by a valve or valves h. Each handle and its corresponding leg may be made out of a single tube of varying cross-section.
Patent GB-220845-A (GB)
Title: Improvements in or relating to the centre pivot bearings of the bogie carriages of railway and the like vehicles
IPC: B61F5/16
Filed: 1923-10-17
Abstract: 220,845. Peters & Co., Ltd., G. D., and LeClair, L. J. Oct. 17, 1923. Dust, excluding; oil, retaining. - A centre pivot, bearing between a vehicle and bogie has a ring of balls 1 in an annular chamber in a boss 2 depending from the upper plate 3 into a groove 6 :n a boss 5 on the lower plate 4. The bevelled edges of flexible laminated metal rings 7, 9 fixed to the plate 3 or to the boss 5 exclude dust from and retain lubricant in the bearing. The flexibility of the rings 7, 9 is increased by slits 13, the slits in adjacent laminations being out of line.
Patent GB-481033-A (GB)
Title: Improvements in or relating to synchronising means for machine guns firing through the propeller circles of aircraft
IPC: F41A19/05
Filed: 1936-09-24
Abstract: 481,033. Aircraft guns. - CESKA ZBROJOVKA AKCIOVA SPOLECNOST V PRAZE. Sept. 24, 1936, No. 25933. Convention date, Sept. 24, 1935. [Class 92 (ii)] Relates to means for controlling and synchronizing the fire of machine guns between aircraft propeller blades in which the firing cam V is angularly adjusted in the sense of rotation of the propeller by means of a centrifugal governor to suit the engine speed. According to the invention, the governor weights Z, which act in known manner through links T on the cam V, are controlled, for example, by springs P, so as to effect adjustment only within a range of action from a medium engine speed to a higher speed lying below the maximum speed. In the form shown, the shaft H driven from the engine has keyed thereto a frame R carrying the governor weights on pivots C, the weights being connected through the springs P to pivots B on the frame and by the links T to the cam V. This cam is freely mounted on the shaft H and acts by a roller K on the Bowden wire firing device J. The parts move from the dotted line positions to the full line positions during the range of automatic adjustment. The strength of the springs is such that below a certain medium speed the adjustment is inoperative. A single governor may be arranged to control the cams appertaining to a number of machine guns.
Patent GB-1332871-A (GB)
Title: Thermal oxidatively stable polycarbonate
IPC: C08G64/42
Filed: 1971-04-19
Abstract: 1332871 Polycarbonates GENERAL ELECTRIC CO 19 April 1971 [13 April 1970] 25966/71 Heading C3R A thermal oxidatively stable polycarbonate is produced by reacting bisphenol A with a carbonate precursor in the presence of an acid acceptor, a catalyst and a molecular weight regulator, and of 0À000015-0À05 moles per mole of bisphenol A of an ester of a phosphorodihalidous acid of the formula in which X is fluorine, chlorine, bromine or iodine and R is an aryl, haloaryl, alkyl, cycloalkyl, aralkyl or alkaryl radical containing 1-25 carbon atoms. The carbonate precursor may be a carbonyl halide or bishaloformate, the acid acceptor may be a tertiary amine or an alkali or alkaline earth metal hydroxide, carbonate, bicarbonate or phosphate and the molecular weight regulator may be phenol, cyclohexanol, methanol, paratertiary butyl phenol or parabromophenol. A moulding composition may comprise the polycarbonate and 0À01-1% by weight of an epoxy compound of the formula in which R 1 , R 2 , R 3  and R 4  are hydrogen,. alkyl, cycloalkyl, substituted cycloalkyl, aryl, substituted aryl or heterocyclic organic radicals or two of the radicals together with the group form a cycloalkyl or substituted cycloalkyl ring, the organic radicals containing 1-24 carbon atoms. In examples 2,2-bis-(4-hydroxy phenyl)-propane, C 6 H 5 -O-PCl 2  and phosgene are reacted together in the presence of methylene chloride, calcium hydroxide, p-tertiary butyl phenol and triethylamine, and the phosphoruscontaining polycarbonate produced blended with 3,4-epoxycyclohexyl methyl 3,4-epoxycyclohexane carboxylate and moulded.
Patent GB-380250-A (GB)
Title: Improvements in absorption refrigerating apparatus
IPC: F25B15/10
Filed: 1931-09-16
Abstract: 380,250. Refrigerating. HARTMAN, J.,80, Leuvenschestraat, HAAN, J. M. W. DEN, 139, Amalia van Solmsstraat, both in The Hague, and BIKKERS, A., 88A, Witte de Withstraat, Rotterdam, both in Holland. Sept. 16, 1931, No. 25968. Convention date, April 24. [Class 29.] Absorption machines and systems.-The condenser 7 and the absorber 1 of a continuously acting machine are disposed in an air-cooled duct 12 through which cooling liquid flows thermosiphonically. A liquid trap 5 arranged between the rectifier and the absorber may also be located in the duct which is provided with cooling fins 14. A pump may be provided to assist the circulation of the liquid in the duct, and air may be forced over the duct to promote cooling of the liquid. The generator consists of a tube 4 heated by an electrical spiral element 13, and a compressed inert gas, e.g. hydrogen, circulates between the absorber and the evaporator 8. The duct 12 may be provided with a dull black coating to assist the cooling thereof.
Patent GB-831614-A (GB)
Title: Improvements in and relating to micrometer dial gauges
Inventor: KORTUM HERBERT
IPC: G01B3/22
Filed: 1957-08-16
Abstract: 831,614. Indicating-apparatus; dial gauges. ZEISS JENA C. VEB. Aug. 16, 1957, No. 25991/57. Classes 106 (2) and 106 (4). A micrometer dial gauge in which a pointer 2 is disposed on a free mid-portion of a U-shaped blade 1 whose ends are fixed respectively to a feeler element 7 and to the frame 5, has two blades 1, 1<SP>1</SP> arranged with one end 3, 3<SP>1</SP> of each attached to parallel guides 5, G and with their other end portions 4, 4<SP>1</SP> pressed against each other to form the feeler element 7. The blade 1 may carry several pointers acting in successive ranges against appropriate scales. Increased amplification is obtained by placing two gauges in tandem, the feeler of the second being acted on by the pointer of the first.
Patent GB-864706-A (GB)
Title: An integrating relay regulating device
IPC: G05D3/10
Filed: 1958-08-13
Abstract: 864,706. Automatic control systems. JELINEK, J. Aug. 13, 1958 [Aug. 14, 1957], No. 26022/58. Class 38 (4). In an automatic control system the values of a controlled quantity and a reference quantity respectively influence the time constants of resistance-condenser integrating circuits associated with the grid circuits of electronic control relays which respectively operate when the voltage across the associated condenser reaches a predetermined value and discharge the condensers when both have operated. In Fig. 1 a resistor 2, which may be a photo-cell, mechanically operated potentiometer, or electronic valve, varies with a variable to be controlled and a resistor 1 is set in accordance with a desired value of the variable. The resistors form part of resistance-condenser networks controlling the grid-cathode voltages of electronic valves 5 and 6 so that if the variable has a value above or below the desired value one or other of the valves is rendered conductive before the other to operate its associated relay 11 or 12 and thereby cause a reversible D.C. servomotor (not shown) connected to terminals 18-20 to run in the appropriate direction to correct the variable. The relays 11 and 12 are so arranged that operation of the servomotor initiated by one of them continues until the other also operates, whereupon a relay 13 is operated to discharge the condensers and reset the relays in readiness for the next cycle of operation. To ensure positive operation, each of valves 5 and 6 may be replaced by a two-valve trigger circuit.
Patent GB-820728-A (GB)
Title: Improvements in or relating to lighting fittings
IPC: F21V17/00
Filed: 1955-09-12
Abstract: 820,728. Lighting fittings. BENJAMIN ELECTRIC Ltd., FENN, J. J., and CAMPBELL, S. A. Sept. 12, 1956 [Sept. 12, 1955], No. 26025/55. Class 75(4) [Also in Group XXV] In a lighting fitting comprising a reflector 2 the open mouth of which is closed by a translucent cover 1, the cover is secured to the reflector by a series of clips 5 pivoted to one of the members 1, 2 and movable to engage the other member, each clip 5 having a cam 9, 10 pivoted thereto which is movable to urge the members 1, 2 together when the clip is in its operative position. As shown the clips are each pivoted at one end to a channel-section metal frame 4 in which the cover 1 is secured by tags, the periphery of the cover being encased in a U-section felt gasket 13. Each clip 5 is elongated with a U- shaped portion, at the end opposite the pivot, arranged, when the clip is swung tangentially to the cover 1, to embrace an out-turned bead 6 which terminates a conical flange 7 of the reflector 2. The cam 9 is pivoted between ears 12, bent up from the clip 5, so that the cam surface 10 projects through an opening in the clip 5 to bear on the frame 4 whereby operative movement of the cam presses the cover against the reflector flange 7. The cover frame 4 has a hinge secured thereto, part 15 of which is in the form of a clamp which is attachable to the reflector bead 6. With the fitting suspended in use, the flange 7 of the reflector acts as a watershed. In an alternative construction the clips 5 may comprise a lateral projection to engage in an inwardly facing recess of the reflector mouth.