baber/WOPTO huggingface dataset:
Patent GB-115847-A (GB)
Title: Improvements in or relating to the Electrolytical Production of Zinc.
Inventor: CLEVENGER GALEN HOWELL
IPC: C25C1/16
Filed: 1918-05-07
Abstract: 115,847. Clevenger, G. H. May 7, 1917, [Convention date]. Zinc sulphate. - An electrolyte for depositing zinc is purified, particularly from cobalt, by producing nitroso- # -naphthol therein. From 10 to 20 parts of this substance are required for each part of cobalt. Copper and iron, if present, are precipitated with the cobalt; manganese is unaffected. Finely-ground #-naphthol, or the finelydivided sublimed substance, together with the requisite acid, which may consist of spent electro. lyte, is added to the zinc sulphate or other solution to be purified, and the mixture is agitated by air or mechanically. Sodium nitre is dissolved in an unacidified portion of the solution, which is then restored to the main body. Heat may be applied after formation of the nitroso- # naphthol. Zinc dust may be added to the solution either before or after the above purification; in the former case, it precipitates metals such as cadmium, copper. lead, bismuth, arsenic, and antimony, while in the latter case it reduces the residual nitrates and nitrites. Impurities may also be precipitated by lime or calcium carbonate.
Patent GB-343770-A (GB)
Title: Improvements in or relating to telephone pay stations
IPC: G09F11/06
Filed: 1930-03-08
Abstract: 343,770. Automatic exchange systems. TELEPHON-APPARAT - FABRIK E. ZWIETUSCH & CO., GES., 6, Salzufer, Charlottenburg, Berlin. March 8, 1930, No. 7675. Convention date, May 17, 1929. [Class 40 (iv).] In order to avoid dishonest recovery of a coin after an effective call in telephone prepayment stations arranged for coin collection at the end of conversation by a collecting magnet, a relay provided at the exchange is adapted to store the collecting impulse, viz. the metering impulse, and render the circuit unfit for conversation until the collecting magnet is operated. As shown, a device V driven by clockwork, which is wound by operation of the switchhook HU, closes a contact in the circuit of the collecting magnet KM for a predetermined time upon restoration of the receiver upon the switch-hook and then actuates the coin restoring mechanism. When after a successful call, the receiver is replaced slow-release relay Z at the exchange pulls up over winding ZI and locks over winding ZII in series with resistance Wi. The circuit of relay ZH is prepared over contact z2 and when the device V connects the collecting magnet KM to line b relay ZH is energized in series with magnet KM. Relay ZH short-circuits winding ZII, and thereby releases relay Z but relays KM, ZH remain operated over zh1 until the device V switches the collecting magnet from the line and restores the speaking circuit. Any attempt to recover a coin by fraudulent means, e.g. operation of the impulse springs to cause release of the connection, is prevented since relay Z is operated in such circumstances to store the collecting impulse and ensure operation of the collecting magnet KM when the switch-hook is actuated. For ineffective calls, relay Z and magnet KM remain inoperative and the coin restoring mechanism is subsequently operated. Contacts MK are operated upon insertion of a coin to open short-circuit across the impulse contacts JK.
Patent GB-140406-A (GB)
Title: Improvements in steam supply systems for a plurality of engines
IPC: F01B25/14
Filed: 1920-03-15
Abstract: 140,406. Ball Engine Co., (Assignees of Weston, C. B.). Jan. 20, 1915, [Convention date]. Steam supply, method of.-Comprises a steamsupply system for a number of engines such as are used on a steam shovel. The hoisting-engine 6, provided with a pair of vertical cylinders, is mounted at the centre of the turntable 4; the swinging-engine 7 turns the table through gears 18, 19 and shafts 20; the crowding-engine 8 drives a shaft 23 through gears 21, 22 and is mounted on the boom 5. Steam from a boiler 4a passes through a pipe 25 to a controlling- valve 26, and then to the chests of the engine 6, from which a supply is taken through a pipe 27 for the engine 7 and, by means of a branch 29, for the engine 8.
Patent GB-885120-A (GB)
Title: Process of spinning regenerated cellulose fibres having a latent crimp
IPC: D01F2/06
Filed: 1958-03-11
Abstract: Regenerated cellulose filaments which crimp when wetted are made by extruding a continuous stream of viscose into a coagulating bath and injecting supplementary amounts of viscose into the stream at predetermined intervals of time so as to form filaments of varying cross section, the viscose containing 7,0-8,6% by weight of cellulose, 6,0-8,5% by weight of sodium hydroxide and 35-40% of carbon bisulphide, based on the alpha cellulose in the viscose, and having a sodium chloride salt test of 3-10 and a ball fall viscosity of 10-150 seconds and the coagulating bath containing 6,6-7,7% by weight of sulphuric acid, 1-1,5% by weight of zinc sulphate and 16-20% by weight of sodium sulphate and having a temperature of 50-70 DEG  C.; the filaments are withdrawn from the coagulating bath as a multifilament yarn, which is stretched while immersed in a hot stretch bath consisting of an aqueous solution of acid and salts which is more dilute and at a higher temperature than the coagulating bath, and the stretched yarn is subjected to a series of wet processing steps, stretched a second time between the hot stretch bath and the wet processing, stretched a third time during the wet processing, and then dried without loss of tension and collected. The yarns thus produced have, when wetted, spaced cross-sections of strong crimp alternating with spaced cross-sections of lesser crimp. Yarns thus produced are suitable for the production of pile fabrics such as tufted carpets.  U.S.A. Specifications 2,386,173, 2,517,694 and 2,572,936 are referred to.
Patent GB-1024731-A (GB)
Title: Improvements in and relating to exciter arrangements for a.c. generators
IPC: H02P9/36
Filed: 1963-02-27
Abstract: 1,024,731. Automatic voltage control. T. FRITSCH and G. PODDIG, [trading as THEODOR FRITSCH & CO]. Feb. 27, 1963 [Feb. 27, 1962], No. 7865/63. Heading G3R. [Also in Division H2] An alternator excitation comprises a first constant excitation and a second controllable excitation added to the first excitation to maintain the rated voltage under varying loads. Winding 2a on rotor 2 is energized from winding 4a of a permanent magnet medium frequency alternator (100- 400 c/s) through a rotating bridge rectifier circuit 6 to induce the rated no load voltage in stator winding 1a. A second winding 2b is energized from a second winding 4b on the exciter through a rotatable controllable rectifier system, comprising a bridge rectifier and a silicon controlled rectifier 7, to provide an excitation dependent on generator loading. The control signals are obtained from comparator amplifier V which is supplied with a synchronizing signal obtained from exciter winding 4a or 4b, a reference voltage and the output voltage of the alternator. The reference voltage, which may be stabilized by a zener diode, is obtained from core 10 which acts as the wound stator of an inductor alternator comprising permanent magnets 5 and inductor 9 formed of iron bars rotating with shaft 3. The synchronizing signal and control signal are transmitted through a pair of rotating transformers 8a, 8b, constructed to have low losses. In a modification the first constant excitation is produced by a permanent magnet section of the rotor which is adjacent a wound section and both sections co-operate with a single stator. The reference voltage may be produced by a tachometer generator.
Patent GB-772770-A (GB)
Title: Improvements in continuously variable gears
IPC: F16H29/02
Filed: 1955-03-18
Abstract: 772,770. Eccentrics. NEUKIRCH, J. March 18, 1955 [March 20, 1954; March 20, 1954], No. 7901/55. Class 122 (1). [Also in Group XXIV] In a variable ratio gear in which the rotation of a driving shaft 32 carrying an eccentric 34 causes racks in contact therewith to oscillate linearly so that their positive half-motions can be fed through gear trains and freewheels to a final driven shaft (see Group XXIV), the eccentricity of the eccentric relative to the driving shaft 32 is adjusted to vary the velocity ratio of the gear. The eccentric 34 co-operates with racks 37 through a bearing 35 and is mounted rotatably on a second eccentric 44 fast on the driving shaft 32. An internally. toothed annulus 45 is fast with the main eccentric 34 and meshes a pinion 46, rotatable on a spindle fast in the second eccentric 44 and also meshing teeth 47 at the end of a sleeve 48 rotatable relatively to the shaft 32. On turning a control wheel 55, bevel gears 54, 54<SP>1</SP> turn a screwed spindle 52 carrying a control fork 53 which, together with a pin 50, is thus moved axially of the gear. The pin 50 slides in an axially directed groove in the shaft 32 and in an inclined slot 49 in the sleeve 48, which is thereby turned relatively to the shaft. Through the teeth 47, pinion 46, &c., the eccentric 34 is simultaneously turned on the eccentric 44, so that its eccentricity with respect to the shaft 32 is altered.
Patent GB-1096872-A (GB)
Title: Improvements in or relating to heterocyclic compounds and the manufacture thereof
IPC: C07D499/00
Filed: 1965-02-24
Abstract: Compounds of the formulae <FORM:1096872/C2/1> and <FORM:1096872/C2/2> wherein R is a straight or branched chain alkyl radical of 1 to 4 carbon atoms and acid addition salts thereof and preparation thereof by condensing a tryptamine derivative of the formula <FORM:1096872/C2/3> wherein R has the above significance, or an acid addition salt thereof in an acidic buffer solution either with pyridine-4-aldehyde, and separating the products corresponding to the first and second formulae above by chromatography or by rendering the reaction mixture alkaline and fractionally crystallizing; or with pyridine-2-aldehyde or pyridine-3-aldehyde to form a compound of the first general formula only. The preparation of 6-methoxy, 6-ethoxy-, 6-propoxy - and 6-sec-butoxy-substituted 2,3,4,9-tetrahydro - 1 - (2 - pyridyl) - 1H - pyrido[3,4-b]-indole; 6-methoxy-, 6-isopropoxy- and 6-n-butoxy -substituted 2,3,4,9-tetrahydro-1-(3-pyridyl) - 1H - pyrido[3,4-b]indole; 6 - methoxy-, 6-ethoxy- and 6-iso-butoxy-substituted 2,3,4,9-tetra - 1 - (4 - pyridyl) - 3H - pyrido[3,4-b]-indole and 4,9-dihydro-1-(4-pyridyl)-3H-pyrido-[3,4-b]indole and hydrochloride salts thereof is described.  Penicillin salts of the compounds of the first and second formulae above may be formed by direct neutralization of the base or by metathetical exchange of the anion in a salt and are useful in the purification of penicillins particularly benzyl penicillin.ALSO:Salts of substituted pyrido[3,4-b] indoles of the formulae:  <FORM:1096872/A5-A6/1> and <FORM:1096872/A5-A6/2> wherein R is straight or branched chain alkyl radical of 1 to 4 carbon atoms with trichloracetic acid have herbicidal activity and are active against, for example, yellow and green foxtail, quackgrass and Johnson or Bermuda grass.  Salts with fluosilicic acid are useful as mothproofing agents.
Patent GB-582214-A (GB)
Title: Method of making selenium elements
IPC: H01L21/10
Filed: 1944-04-28
Abstract: 582,214. Forming selenium coatings on metal. STANDARD TELEPHONES & CABLES, Ltd. April 28, 1944, No.7988. Convention date, May 1, 1943. [Class 82 (ii)] [Also in Groups XXXVI and XL] Selenium coatings are formed on the base plates of rectifier or light-sensitive elements by blowing the powder under pressure on to the heated plate. As shown, the selenium powder 14, formed by grinding selenium which has been melted and cooled, is blown at an air pressure of from 5 to 7 pounds per square inch through a steel-wool filter 11 and nozzle 13 on to the base plate 1, which may be of iron, steel or aluminium and is normally roughened. It may also be nickel-plated. The base-plate may be supported on a hot-plate 3 and heated from about 100-150C. and the powder may be sprayed to a thickness of from .004-.008 in. and baked for half-an-hour or so at a temperature just below the melting point of selenium, e.g., of from 200-214C.
Patent GB-396487-A (GB)
Title: Improvements in or relating to safety razors
IPC: B26B21/18
Filed: 1932-03-18
Abstract: 396,487. Safety razors. LANCASTER, F. J., 101, Snow Hill, Birmingham, and CHARLES, A. E., 11, Sand well Park, West Bromwich. March 18, 1932, No. 8045. [Class 30.] In a clamped-blade safety razor of the kind in which the cutting-edges of the blade project through and beyond an arc including the edges of the curved clamping- and guard-plates 1, 5, the guardplate is provided on each side with continuous or interrupted blade-flexing abutments 6, 7 of different heights so that the guard can be reversed to give a different degree of blade exposure with the same curvature. The edges of the abutments are curved as shown to correspond to the curvature of the clamping-plate. The flexing abutments 6, 7 may be of indiarubber to ensure the blade being firmly and resiliently held when the usual clamping-screw means is slackened to obtain further adjustment. All the parts may be of synthetic resin, metallic screw-parts 2, 10 being moulded in position. The Provisional Specification states also that rubber blade-flexing abutments may have flanges fitting undercut grooves or recesses in the guard and that they may be tubular and coaxial with the blade-locating pins.
Patent GB-1470920-A (GB)
Title: Piezoelectric high voltage generator unit
IPC: H02N2/00
Filed: 1975-02-26
Abstract: 1470920 Piezoelectric elements CHANNEL PRODUCTS Inc 26 Feb 1975 [28 Feb 1974 17 Dec 1974] 8056/75 Heading H1E [Also in Division H2]  A piezoelectric high voltage generator unit comprises a piezoelectric element in which at least the non-pressure bearing surface portions are coated with viscid electrically insulating material. In the arrangements shown, a piezoelectric element 51 is mounted between an impact pin 52 and an anvil 53 in an insulating jacket 54, and is in contact with a viscid insulating material 58 having a sticky or tacky quality. The material 58 may be an uncured and unfilled epoxy resin adhesive, and may be allowed to fill any small gaps or crevices which exist in or between the abutting surfaces of the element 51 and the pin 52 or the anvil 53. An insulating bushing 55 acts to centre the element 51 within the jacket 54. A further arrangement (Fig. 5, not shown), includes two piezoelectric elements (61, 62) and a viscid insulating material (73). Squeeze-type pressure application is also envisaged for the piezoelectric element (5).
Patent GB-1273696-A (GB)
Title: Insulated electrical conductor and method of making
Inventor: MUISE GORDON JAMES
IPC: H01B7/18
Filed: 1970-02-19
Abstract: 1,273,696. Electric cable. USS ENGS. & CONSULTANTS Inc. 19 Feb., 1970 [20 Feb., 1969], No. 8085/70. Heading H1A. [Also in Division C3] An insulated electrical conductor manufactured by the method of applying polypropylene insulation to the metal conductor of the cable by extrusion, heating the polyolefin layer to 400‹ to 500‹ F. and applying to said polyolefin layer while at said temperature a rubber based adhesive as specified below and then passing the cable through a water bath to reduce its temperature. A second layer of adhesive is applied to the relatively cool cable and a substantially abrasive resistant elastomer jacket is bonded under pressure to polyolefin layer. The insulator may also consist of polyethylene or crosslinked polyethylene and the elastomer jacket may consist of neoprene, butyl rubber, natural rubber or chlorosulphonated polyethylene. Chemlock 220 consists of chlorinated rubber, brominated poly 2,3-dichlorobutadiene-1,3 and at least 1% by weight, based on the weight of the solids in said composition, of a poly-cnitroso aromatic compound.
Patent GB-1365842-A (GB)
Title: Chopsticks
IPC: A47G21/06
Filed: 1973-02-20
Abstract: 1365842 Chopsticks E J ROLLBAND 20 Feb 1973 [1 Nov 1972] 8303/73 Heading A4A A chopstick assembly comprises two elongated stick members 11, 12, and a support plate 15 secured to the member 12 near one end thereof, pivot means in the form of a part-circular bearing 22 being provided on the plate and arranged to accept a pivot stand 20 fixed to the member 11. The plate 15 is firmly wedged by friction in a slot (14), Fig. 1 (not shown) in the member 12. The bearing 22 is formed by a cut-out including an extension 21. The plate may be tapered towards one end of the assembly and have a curved edge to accommodate a finger of a user. The member 11 is slotted to provide free pivotal movement thereof over the plate.
Patent GB-700778-A (GB)
Title: Improvements in and relating to chain welding machines
IPC: B21L3/02
Filed: 1951-04-10
Abstract: 700,778. Welding chains. ESSER, P. [trading as MEYER, ROTH & PASTOR]. April 10, 1951 [April 26, 1950], No. 8311/51. Class 83 (4), [Also in Group XL(b)] In a chain link resistance welding machine with means for pressing the link ends together during welding, means are provided which measure the temperature of the weld independently of the softening effect of the heat producing current and by the aid of which the operations of switching off the welding current and actuating means for increasing the pressure on the link ends are set in action when a determined temperature is reached. In an embodiment an optical system 35 throws an image of the weld 36 on to a photo-electric cell 37. A light filter may be interposed to increase sensitivity. Through a voltage regulator 38 calibrated in temperature degrees, the cell 37 applies voltage to the grid of an electronic tube 39 forming one arm of a bridge circuit. Each pair of arms of the bridge comprises a tube and an ohmic resistance. The bridge is balanced by a regulator 42 supplied from the mains through a stabilizer 45. Voltage from the cell 37 causes a D.C. voltage to be applied to the grid of an amplifier tube 40 which initiates the action of a mercury vapour rectifier or gas triode 41. The anode current of the tube 41 operates a relay 43 which switches off the welding current through a circuit breaker and supplies a current to a magnet coil 34 forming part of the welding machine. In the machine a chain link is fed to a support 18 and an arm 11 is rotated about a hub 22 against springs 10 by a cam 24 engaging a roller 23 on the arm 11. The arm 11 operates a toggle connected to arms 15 which carry upsetting jaws to move the jaws apart. The movement of the arm 11 also causes an arm 25 pivoted on the hub 22 to rotate and through a socket 26 to load a spring 27. The arm 25 is then locked by a lever 30. During welding the roller 23 moves off the cam 24 and the arm 11 is pulled down by the springs 10 to cause the upsetting jaws to exert pressure on the link. When the control device switches off the current and energizes the coil 34 the locking lever 30 is moved to release the arm 25 and spring 27 which exert additional pressure through the lever 11 and upsetting jaws on the link. Another control circuit employing an A.C. amplifier is described and it is stated that a sensitive relay may be controlled directly from the photo-electric cell.
Patent GB-1207372-A (GB)
Title: Aryl sulphones
IPC: C07C35/04
Filed: 1967-08-29
Abstract: 1,207,372. Aryl sulphones. ROUSSEL UCLAF. 29 Aug., 1967 [26 Aug., 1966(2); 24 Feb., 1967; 16 June, 1967; 19 July, 1967], No. 8367/70. Divided out of 1,207,371. Heading C2C. The invention comprises aryl sulphones of the general formula: H-A-SO 2 -Ar wherein Ar is an aryl group having either one or two aromatic rings which may be substituted with one or more C 1 -C 2  alkyl, alkoxy, halogenomethyl and/or nitro groups or halogen atoms and A is either the radical: or the radical: or the radical in which R 1  is a hydrogen atom or a lower C 1 -C 4  alkyl radical, R 2  and R 3  which may be the same or different are each alkyl, aralkyl, aryl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, or heterocyclic radical, R 3  having at least 2 carbon atoms, or R 2  and R 3  together with the intervening carbon atom form a saturated carbocyclic ring with 3 to 7 carbon atoms or an unsaturated carbocyclic ring, e.g. a cyclohexene or cyclopentadiene ring, such carbocyclic rings if desired being substituted by one or more methyl, ethyl and/or methoxy or ethoxy groups, or R 2  and R 3  together with the intervening carbon atom form a polynuclear aromatic system such as fluorene, or a heterocycle which may be substituted by one or more methyl, ethyl and/or methoxy or ethoxy groups, R 4  is a methyl or ethyl group, R 5  is a hydrogen atom or methyl or ethyl group, or R 4  and R 5  form together with the two intervening carbon atoms a saturated or unsaturated heterocyclic or carbocyclic ring, Y is -CH 2 - or a saturated or unsaturated aliphatic hydrocarbon chain and Y<SP>1</SP> is a methine group or a saturated or unsaturated aliphatic hydrocarbon chain. They may be obtained by reacting ArSO 2 M wherein M is an alkali metal, e.g. Na or K, with an allylic type derivative HAX wherein X is Cl, Br or I or a methane sulphonyloxy or toluene-psulphonyloxy group, advantageously in the presence of a solvent and in the presence of a basic reagent. In a modification the products are obtained by reacting the compounds ArSO 2 M with an alcohol HA-OH in the presence of formic acid. 3 - Ethyl - 1 - penten - 3 - ol is obtained from the reaction of pentan-3-one with vinyl magnesium chloride in tetrahydrofuran and then treating with water and is converted into 1 - bromo - 3 - ethyl - 2 - pentene by reaction with PBr 3  in petroleum ether. Several other analogous unsaturated alcohols and unsaturated bromo compounds of the type HABr are also specified and are obtained similarly starting with the appropriate unsaturated ketone. 3 - Methyl - 2 - cyclohexen - 1 - ol is obtained by the action of lithium aluminium hydride on 3-methyl-2-cyclohexen- 1-one in tetrahydrofuran.
Patent GB-573306-A (GB)
Title: Improvements in the manufacture of cellular polymerised ethylene
IPC: C08J9/12
Filed: 1941-07-03
Abstract: Solid polymerized ethylene is converted into cellular form by subjecting the polymer to the action of carbon dioxide under pressure while at a temperature between the softening and the solubility points, whereby the polymer is caused to absorb a proportion of the gas, then releasing the pressure quickly and then cooling the material below the solubility point.  The solubility point is defined as a temperature from 30-40 DEG  C. below the softening point and is characterized in that below this point the polymer is practically insoluble in any solvent.  The cellular product is used as dielectric material.
Patent GB-140769-A (GB)
Title: High frequency alternator
IPC: H02K19/24
Filed: 1920-03-22
Abstract: 140,769. Billieux, O. Nov. 22, 1917, [Convention date]. Inductor-alternators.-A high-frequency alternator has an unwound rotor consisting of two disks oppositely-rotating at equal speed and having magnetic teeth preferably tangentially laminated and separated and retained by non-magnetic teeth. On each side of the rotor is located a toothed wound armature F, separated from the rotor by an air-gap G, while the disks are separated by an air-gap E, each air-gap being variable and regulable. The flux is created by a circular exciting coil K and passes through the frame L, the two armatures R, and the rotor disks A, B. In the case where the disks are alike and the interdental spaces N are of the same width as the magnetic teeth M, a variable reluctance type of machine is provided, and the coil K may be dispensed with, the armature windings' R being utilized as field magnets, and protection being provided for the source of continuous current. The windings R may also be dispensed with and the coil K retained as field magnet and armature.