baber/WOPTO huggingface dataset:
Patent GB-206241-A (GB)
Title: Improvements in electrical systems and apparatus for inducing chemical action
IPC: H01J37/32
Filed: 1922-08-03
Abstract: 206,241. Rickets, W. J. Aug. 3, 1922. Non-metallic substances, obtaining.-Relates to apparatus of the kind, such as is described in Specification 169,548, in which an electric arc is maintained between an electrolytic solution and an external solid electrode for the purpose of producing chemical reactions. In order that the apparatus may be worked with a low frequency alternating current or with a direct current employing the solid electrode as the anode, there is superimposed upon the working voltage across the are a high-frequency oscillating voltage, e.g. 50,000 to 1,000,000 cycles per second, which has the effect of reducing the resistance across the arc and so facilitating the passage of the working current. In the arrangement shown in Fig. 1, the current for maintaining the arc between the electrode band electrolyte a is derived from a direct or alternating current generator c, and the high-frequency oscillating voltage is derived from a transformer d, the primary coil of which is excited by the disruptive discharge of a condenser f across a spark gap g. Inductances i<1> - - i<4> in the working circuit prevent flow of current therethrough from the high-frequency oscillating circuit, while condensers e<1>, e<2> in the high-frequency circuit prevent or restrict flow of current therethrough from the working circuit. In a modification, the transformer d is dispensed with and the spark gap g introduced directly between the condensers e<1>, e<2>. In a further arrangement, Fig. 3, where two electrodes b, b<1> are employed, these are connected in series in the high-frequency oscillating circuit, including the transformer d, but are connected in parallel in the working circuit. Further arrangements are described in which one of the cored inductances i<2> in the working circuit is adapted to control a switch whereby the high-frequency oscillating voltage is applied only when the arc is extinguished and the working current interrupted.
Patent GB-1456606-A (GB)
Title: Method and apparatus for grinding particulate solids
IPC: B02C17/16
Filed: 1974-05-14
Abstract: 1456606 Agitator mills A SZEGVARI 14 May 1974 [15 May 1973 10 Aug 1973 10 May 1974] 21265/74 Heading B2A  An agitator mill has recirculation of the slurry and a ball charge such that less than 15% of the mill vessel volume is free space. Two embodiments, viz Figs. 1 and 2 are as shown in Specification 1374214. A third embodiment employs a mill mounted by trunnions 31 on a frame 32, Fig. 3. A pump 41 and inlet tank 49 feed an off centre inlet 44 of the mill. The off centre arrangement prevents bottom sediment formation. A fourth embodiment employs recirculation around a jacket 66 surrounding the mill vessel 63 Fig. 4 using an independantly driven pump 79, 80. The mill is charged via an inlet valve 85 and discharged via a valve 86. In Fig. 5 the retaining tank 100 through which material is recirculated is above the agitator chamber 91 and integral therewith. Examples of comminution of barium ferrite primer, and sugar are described. Typical grinding elements are steel balls >¢" diameter, or glass stone ceramic, tungsten carbide, titanium dioxide, sillimanite balls, beads or pebbles, typically #" -to "5/16". Typical agitator speeds are 100....400 rpm. The retaining tank contents may be stirred.
Patent GB-424769-A (GB)
Title: Improvements in indicating and recording apparatus
IPC: G01L9/00
Filed: 1933-07-28
Abstract: 424,769. Electric signalling systems. CLARK, W. J., BOSANQUET, C. H., and GREGORY, C. H., Norton Hall, The Green, Norton-on-Tees, and IMPERIAL CHEMICAL INDUSTRIES, Ltd., Millbank, London. July 28, 1933, Nos. 21285/33 and 14344/34. [Class 40 (i)] In a system for indicating or recording changes in conditions, such as variations of pressure, an iron core 6 movable in accordance with the variations, e.g. in the level of mercury in a pressure gauge 7, co-operates with the primary and secondary windings 1, 2 of a transformer, to produce indications of a galvanometer connected in the secondary circuit. The primary is fed with A.C. and the secondary supplies the galvanometer through rectifiers. To zeroize the galvanometer, a voltage derived from a potentiometer connected in the primary and equal to the normal secondary voltage is applied to the galvanometer ; alternatively, a second transformer may apply the compensating voltage, the transformer being connected in series and being identical with the indicating transformer. This arrangement also effects compensation for variations in frequency and wave form of the supply voltage. The core 6 is longitudinally subdivided, e.g. in the form of wires, and the former of the coils are made of nonconducting material or of material of low-temperature coefficient.
Patent GB-1097500-A (GB)
Title: Circulating pump
IPC: H02K5/132
Filed: 1966-05-18
Abstract: 1,097,500. Automatic temperature control. INTERNATIONAL STANDARD ELECTRIC CORPORATION. May 13, 1966 [May 18, 1965], No. 21297/66. Heading G3R. [Also in Division F1] A circulating pump comprises a chamber 1a having an inlet and an outlet and having therein an electromagnet 5 having a rotatable core 6 carrying a flexible membrane 9. The core is rotated through part of a circle by the electromagnet and returned by a opening whereby the membrane is distorted to cause flow through the chamber. The electromagnet is energized by a circuit including two silicon controlled rectifiers controlled by a multivibration which may be sensitive to the temperature of the medium i.e. a thermistor in the multivibrator circuit is mounted in the pumped liquid so that the rate of flow is controlled by the temperature.
Patent GB-1168872-A (GB)
Title: Vapour-Permeable Coatings
IPC: C08G18/84
Filed: 1967-05-08
Abstract: 1,168,872. Leather substitutes. SANYO CHEMICAL INDUSTRIES Ltd. 8 May, 1967 [7 May, 1966], No. 21361/67. Heading B2E. Leather substitutes are prepared by coating a fibrous substrate with a solution of a substantially linear urethane polymer in a solvent which is inert with respect to the substrate, removing the solvent from the polymer by treating the coated substrate with a solvent which is a solvent of the polymer solvent yet inert with respect to the urethane polymer and the substrate and cross-linking the urethane polymer with at least one aldehyde containing 1 to 4 carbon atoms for at least one derivative of formaldehyde with which there are at least two groups of the general formula N(OH 2 OR) n  in which R is a hydrogen atom or a methyl group and n is 1 or 2, at any stage in the production of the leather substitute. The fibrous substrates may be woven, non-woven or knitted fabrics and felts made from polyamides, polyesters, viscose rayon, wool, cotton, glass or mixtures of these. Inert liquids used for extraction of the polymer solvent may be water, ethylene, glycol, monoethyl, ether, hydroxyethyl acetate, ethylene glycol, glycerine or mixtures of these. The aldehyde may be formaldehyde, acetaldehyde, glyoxal or mixtures thereof. Suitable formaldehyde derivatives are methylol urea, methylol melamine, dimethylol adipic acid diamide, dimethylol butane diol urethane, dimethylol ethylene urea, dimethylol hydroxy ethylene urea, tetramethylol acetylene urea, dimethylol triazone, hexamethylol melamine and the methyl ethers thereof. A catalyst may be used to accelerate the action of the cross-linking unit with the urethane groups or urea groups of the polymer. Such catalysts may be inorganic acids such as hydrochloric acid, phosphoric acid, organic acids such as acetic acid, oxalic acid, amine salts such as the hydrochloride salts of mono- and di-alkyl amines, inorganic salts such as magnesium chloride, zinc nitrate, sodium hydrogen sulphate, sodium ethyl sulphate, barium ethyl sulphate, ammonium salts such as ammonium chloride and mixtures thereof. The cross-linking agent may be added to urethane polymer at any stage, e.g. added the agent to the solution of the urethane polymer before it is applied to the substrate, applied to the substrate before it is coated with a solution of urethane polymer, added to the inert liquid used for extraction step or sprayed as a solution onto the substrate coating of the polymer. The coated substrate may be dipped into a separately prepared bath containing the cross-linking agent. The cross-linking reaction is generally carried out after the extraction step by heating a coated substrate to a temperature of from 80 to 250‹C. and the preferred amount of crosslinking agent to be added to the polymer is 0.5-5% by weight based on the weight of the urethane polymer. The coating may be applied by spraying, knife coating, roller coating, casting, pressing or dipping. The product may be buffed and top-dressed.
Patent GB-188752-A (GB)
Title: Improvements in the manufacture of laminated metal masses
IPC: B21D53/00
Filed: 1921-08-12
Abstract: 188,752. Midgley, A. H. Aug. 12, 1921. Pole-pieces and cores; electromagnets. - The laminae or stampings of a laminated mass composed wholly or partly of metal, such as the core of a dynamo-eleotric machine, or the pole-piece of an electromagnet, are held together by one or more clamping devices, each having two or more limbs which are passed through the whole of the laminations. Figs. 1, 2 and 4 show the invention applied to a field magnet pole wherein the two limbs of a staple c, which is preferably rectangular or polygonal in cross-section, are passed through holes b in the laminae a and the ends bent over, riveted or otherwise treated to prevent the structure from coming apart.
Patent GB-153993-A (GB)
Title: An improved starting handle for internal combustion engines
IPC: F02N1/02
Filed: 1919-09-02
Abstract: 153,993. Anns, H. F. Sept. 2, 1919. Turning-gear. - A starting- handle is formed in two portions 1, 2 pivoted together at 3 and connected by a spring 4, the shorter member 2 being secured to a shaft 5 adapted to engage the engine shaft by means of a clutch.
Patent GB-320930-A (GB)
Title: Improvements in oxidising catalysts
IPC: C01B17/78
Filed: 1928-07-25
Abstract: 320,930. Robson, S. July 25, 1928. Catalytic agents, preparation of; sulphur trioxide.-In the catalytic oxidation of sulphur dioxide and sulphurous gases the gases together with air or oxygen are passed over a catalyst comprising iron oxide in a sintered or porous nodular form. The material may be prepared by blast roasting pyrites as described in Specification 307,439, [Class 82 (i), Metals, Extracting &c.], and may be employed with additions of smaller proportions of oxides of chromium, manganese, vanadium, zinc.
Patent GB-124417-A (GB)
Title: Improvements in and relating to Closure Discs and the like for Bottles.
IPC: B65D39/02
Filed: 1918-12-24
Abstract: 124,417. American Dairy Supply Co., (Assignees of Compton, H. L.). March 16. 1918, [Convention date]. Capsule closures.-The tab or handle 2 of a closure disk 1 of paper &c. for milk bottles &c. fits in a recess a in the top side of the disk and is secured at one end to the disk. The thickness of the tab is substantially equal to the depth of the recess. The radial recess a has its inner end b beyond the end of the tab inclined, and the securing-means may consist of a U- shaped staple 3 arranged transversely of the tab with its legs pressed into the under side of the disk. The recess a may be formed by means of a rotary grinder or cutter acting at high speed on the ribbon of paper &c. from which the disks are formed.
Patent GB-1503894-A (GB)
Title: Reel for feeding cloth in rope form
IPC: D06B23/00
Filed: 1976-05-25
Abstract: 1503894 Reels GASTON COUNTY DYEING MACHINE CO 25 May 1976 [21 Jan 1976] 21662/76 Heading B8M [Also in Division D1] Each one of a plurality of vanes 18, 20 of a reel has undulations on one of its sides to provide a tractive hold on cloth which is fed in rope form by the reel. The vanes 18, 20 extend radially of the reel axis and are alternately oppositely inclined in relation to the reel axis. The undulations are provided on a projected edge profile located on each vane intermediate its length. The undulations extend in both directions on each side of the point of crossing of the projected edge profile of each cane. The vanes define a V-like channel (see Fig. 1) through which the cloth is fed.
Patent GB-440623-A (GB)
Title: Improvements in spinning solutions and the production of elastic yarns therefrom
IPC: B29D99/00
Filed: 1935-07-31
Abstract: Elastic yarns are prepared by spinning solutions consisting of unconcentrated rubber latex and purified viscose.  Purification of the viscose is effected by precipitation, e.g. by adding to crude viscose a saturated brine solution or alcohol, removing the liquor from the jelly so formed, and dissolving the jelly in water.  The rubber latex and purified viscose are used in approximately equal proportions.  If desired, the latex may contain up to 5 per cent of the weight of the latex of the necessary vulcanizing and accelerating agents, such as sulphur, zinc oxide, sodium diethyl dithiocarbamate, and sodium iso-propyl xanthate.  Threads are obtained by spinning into a coagulating bath containing organic acid or metallic salt, and using a heated godet wheel on the spinning-machine.ALSO:Elastic yarns are prepared by spinning solutions consisting of unconcentrated rubber latex and purified viscose.  Purification of the viscose is effected by precipitation, e.g. by adding to crude viscose a saturated brine solution or alcohol, removing the liquor from the jelly so formed, and dissolving the jelly in water.  The rubber latex and purified viscose are used in approximately equal proportions.  If desired the latex may contain up to 5 per cent of its weight of the necessary vulcanizing and accelerating agents, such as sulphur, zinc oxide, sodium diethyl dithiocarbamate, and sodium iso-propyl xanthate.  Threads are obtained by spinning into a coagulating bath containing organic acid or metallic salt, and using a heated godet wheel on the spinning-machine.
Patent GB-1040323-A (GB)
Title: Improvements in or relating to turret platforms for revolving-turret gun mountings
IPC: F41H7/04
Filed: 1963-05-30
Abstract: 1,040,323. Gun turrets. RHEINMETAL G.m.b.H. May 30, 1963 [June 1, 1962], No. 21730/63. Heading F3C. A turret platform for a revolving gun turret comprises a self-supporting structure of generally cylindrical form made of plastics material and formed with a transverse wall 4 and a false floor 9. When an armoured cupola 2 is secured to the platform the wall 4 divides the cupola into a weapon compartment 5 and a personnel compartment 6. The false floor covers an open-ended ammunition store 10 having rollers 13 fitted to the floor thereof to facilitate movement of ammunition boxes into and out of the store. The ammunition in the form of belts 15 is fed from the boxes to the weapon via conveyer 18 and the belts in the two boxes may be coupled through an opening 22 in the false floor. Housings for the turret driving mechanism are formed either side of the store below the false floor 9.
Patent GB-532729-A (GB)
Title: Improvements in or relating to automatic or semi-automatic telephone systems
IPC: H04Q3/42
Filed: 1939-07-26
Abstract: 532,729. Automatic exchange systems. MERCER, R. (Associated Telephone & Telegraph Co.) July 26, 1939, No. 21781. Drawings to Specification. [Class 40 (iv)] In the system described in Specifications 516,348 and 516,409, the apparatus at the central exchange is modified to deal with calls in which the wanted number comprises less than the full number of digits or comprises one zone digit instead of two, the total number of digits being the same. In a modification of the toll control circuit, on a special service call from an operator at the central exchange to another zone, the three dialled digits are followed by a code signal which sets the relay register IV to operate a relay which opens the timing circuits and prevents subsequent seizure of a printer-controller. In a modification of the register-translator or converter, which, like that described in Specification 532,730 has only a single relay register, when the single zone digit 2 or 3 is received, the first exchange digit which follows is utilized to control the rotary setting of the bi-directional translating switch, and is also transmitted in the ordinary way. The operation of post-springs on the translating switch causes this digit to be retained in the relay register after it has exerted its first control. On special service calls, the transfer from the toll control circuit of the record made by the code signal mentioned above results in immediate operation of the relay which controls release. The printer-controller is modified to effect printing of a period after the zone digit or digits, a relay being provided to bring about the necessary circuit changes when the single zone digit 2 or 3 is received. Specification 532,728 also is referred to.
Patent GB-218113-A (GB)
Abstract: 218,113. Merrylees, A. U. July 14, 1923. Cleaning, fluid pressure processes for.-Apparatus for removing soot and other deposits from boiler tubes and of the type described in Specification 103,380, in which a rotary valve member selectively admits pressure fluid to jet apertures in a surrounding manifold, is characterized by forming the valve 3 of conical shape and adapting it to bear at the spindle end 6 on resilient packing 12 secured in the casing by a sleeve 11. A sleeve 9 at the open end of the valve provides the seams for attachment to an inlet pipe. By this arrangement, the valve may expand in its seating and prevent sticking.
Patent GB-165859-A (GB)
Title: Improvements in or relating to machine guns
IPC: F41A19/30
Filed: 1919-09-04
Abstract: 165,859. Dawson, Sir A. T., and Buckham, Sir G. T. Sept. 4, 1919. Machine guns.-Consists in an automatic gun of the Vickers type having the following features in combination : (1) a device D, D<1>, as described in Specification 165,857, for retaining the firing- spring B<2> and the side-lever axis pin B' in their assembled positions, (2) a stop-piece E for a surface E<1> on the crank, and a resilient bush for the crank-handle roller as described in Specification 165,858, and (3) a cocking-tumbler, as described in Specification 141,605, which is adapted to cooperate with a projection B<1x> on the firing-pin B' for cocking the latter, and to be moved out of the path of this projection by a V-spring B<x>, which also operates upon the arm C<2> of the sear C<1>.
Patent GB-892716-A (GB)
Title: Hopper feeder, in particular for passing textile fibres to machines for their subsequent processing
IPC: D01G23/00
Filed: 1958-07-08
Abstract: 892,716. Hopper feeders. FLEISSNER G.m.b.H., FLEISSNER, J. E., FLEISSNER, H., and FLEISSNER, G., [trading as FLEISSNER & SOHN G.m.b.H. & CO. MASCHINENFABRIK]. July 8, 1958 [March 20, 1958], No. 21860/58. Class 120(1) A hopper feeder has a picking drum mounted near the upper end of an inclined conveyer belt, the drum being provided with needles arranged helically about its periphery. The needles 16 may form a single helix around the drum 14 or more than one helix of needles may be provided. The drum 14 rotates at high speed with the needles 16 moving in the opposite direction to needles 13 on the conveyer belt 12 to throw surplus material back into the hopper 10 and to open tangled masses of material carried by the conveyer belt 12.
Patent GB-982429-A (GB)
Title: Organosilicon compounds
IPC: C07F7/08
Filed: 1963-05-31
Abstract: The invention comprises fluoroalkyl siloxanes of the formula <FORM:0982429/C3/1> where X is halogen or a lower alkoxy group containing less than 7 carbon atoms, R is a perfluoroalkylethyl group, n has an average value of 2-3 inclusive, and m has an average value of 1-5 inclusive.  They are prepared by reacting the compound HO[RSi(CH3)O]mH (a) with a compound RpSiY4-p, or (b) with a compound RpSi(OR1)3-pCl, or (c) with a compound RpSi(OR1)4-p, where p is 0 or 1, Y is halogen, and R1 is lower alkyl.  A solvent may be used, and an acid-acceptor is required in (a) and (b), and a catalyst, e.g. an amine, or a lead, tin, or iron carboxylate, in (c).  When the compounds of the invention are hydrolysed and condensed under acid or neutral conditions, tough, flexible resins are obtained which are resistant to heat, oil, and solvents.  In the examples CF3CH2CH2 SiCl2O[CF3CH2CH2Si(CH3)O]m SiCl2CH2CH2CF3, where the value of m lies between 3 and 4, is prepared by method (a) using a -picoline as acid acceptor, and hydrolysed and condensed to a resin, the compounds (C2H5O)SiO[CF3CH2 CH2Si (CH3)O]3Si(OC2H5)3, (C4H9O)3SiO[C2F5CH2CH2 Si(CH3)O]5SiO(C4H9)3, CF3CH2CH2Si(OCH3)2O [C10F21CH2CH2Si(CH3)O] Si(OCH3)2CH2CH2CF3, and CF3(C2H5)CFCH2CH2Si (OC6H11)2O[(CF3)2 CHCH2Si(CH3)O][C3F7CH2CH2Si (CH3)O]3Si (OC6H11)2CH2CH2CF(CF3) C2H5, are prepared by method (b) using tetramethyl guanidine as acid acceptor, and CF3CH2CH2Si(OCH3)2\t O[C2H5 (CH3)CFCH2CH2Si(CH3)O]4Si (OCH3)2CH2CH2 CF3 is prepared by method (c) and hydrolysed and condensed.  Specifications 864,252 and 895,091 are referred to.
Patent GB-1102533-A (GB)
Title: Production of a fluorinating agent
IPC: C07B39/00
Filed: 1965-05-24
Abstract: A spheroidal fluorinating agent containing CaF2 is made by spray-drying a suspension of CaF2 in an aqueous solution of CaCl2. The spray-drying can be effected at 100-500 DEG  C. The proportion of CaCl2 can be 1-20% wt. of the CaF2. The suspension may contain 30-80% wt. CaF2.  The CaCl2 solution can be made by reacting HCl and Ca compounds, e.g. CaO, Ca(OH)2 or CaCO3, which may be present in a mineral also containing the CaF2, e.g. fluorite or fluorspar.  The CaF2-containing fluorinating agent may be regenerated by this process after washing to remove part of the CaCl2 covering it. The spheroids may be hollow and have a particle size of 35-400 Tyler mesh and be used for fluorination of CCl4.ALSO:A spheroidal fluorinating agent containing CaF2, which is used to fluorinate CCl4, is made by spray-drying a suspension of CaF2 in an aqueous solution of CaCl2. The fluorinating agent can be used in a fluidized bed reactor and can be regenerated by the spray-drying process. The spheroids may be hollow and have a particle size of 35-400 Tyler mesh.  In the examples, CCl4 with and without Cl2 is passed through a fluidized bed of the spheroids to produce gas mixtures containing CO, CF3Cl, CF2Cl2, CFCl3, CHCl3 and CCl4.
Patent GB-871154-A (GB)
Title: Improvements in and relating to colour television receivers
Inventor: JUSTICE JAMES WILLIAM HENRY
IPC: H04N9/22
Filed: 1957-07-11
Abstract: 871,154. Television. SYLVANIA-THORN COLOUR TELEVISION LABORATORIES Ltd. July 8, 1958 [July 11, 1957], No. 22050/57. Drawings to Specification. Class 40(3) In a colour television receiver in which a scanning beam is deflected both in a direction parallel to elongated colour producing stripes arranged in groups of repeating colour sequence and, simultaneously therewith, in a direction relative to the stripes such that it sweeps repeatedly over each stripe in a group during the scanning of such group (e.g. by means of 'spotwobble') the waveform producing the latter deflection comprises a fundamental component together with a suitable harmonic (e.g. the fourth or seventh) thereof such that the time spent by the scanning spot on the stripes is increased. This arrangement allows colours of high purity to be produced without making the size of the scanning spot undesirably small. The Specification includes a description of the manner in which the 'spot-wobble' waveform is produced under the control of the chrominance sub-carrier wave in a receiving system in which NTSC type signals are, after a known processing, supplied to a single gun picture tube and further includes details of a scanning control arrangement in which indexing signals derived via a photo-electric device viewing the tube screen are utilized to correct any errors in the beam position by applying a correcting deflection, via a separate deflecting coil, the effect of any amplitude modulation on the indexing signals due to variations in picture brightness being corrected by varying the gain of the indexing channel in a compensating manner. Specifications 673,202 and 871,153 are referred to.