baber/WOPTO huggingface dataset:
Patent GB-1076914-A (GB)
Title: Process for preparing ethane-1-hydroxy-1, 1-diphosphonic acid
IPC: C07F9/38
Filed: 1966-04-21
Abstract: Ethane - 1 - hydroxy - 1,1 - diphosphonic acid (E.H.D.P.) is prepared by heating a solution containing phosphorous acid, acetic anhydride and acetyl chloride (or PCl3, acetic anhydride and acetic acid) in the molar ratios 1:3:1 to 1:8:5, to a temperature of 30-90 DEG  C. until an acylated intermediate condensate of E.H.D.P. precipitates out; separating off the solid condensate and hydrolysing it e.g. with water or NaOH to yield the required acid or its salt.  Hydrolysis can be by any suitable method, e.g. by refluxing with water, treating with superheated steam or boiling with caustic soda.  The reaction may be carried out as a batch or continuous process. The batch process can be converted to a continuous process by recycling the used reagents to the initial reaction zone.  The solid condensate can also be partially or completely neutralized before hydrolysis.  The E.H.D.P. has sequestering and chelating properties and its salts, e.g. alkali metal salts are useful as builder compounds in laundering and detergent compositions.
Patent GB-224266-A (GB)
Title: Improvements in or connected with engine valve gear
IPC: F01L1/46
Filed: 1923-07-06
Abstract: 224,266. Hibbert, G. July 6, 1023. No Patent granted (Sealing fee not paid). Lift valves.-A pair of valves for an internalcombustion or other engine are acted on by a single or laminated blade spring having notches in its edges for enabling it to be fitted or removed sideways. The spring 6 shown is adjustably mounted at 7 and bears at its ends on levers 14 pivoted at 20 and engaging plates 19 mounted on the valve spindles, the notches in this case being formed in the levers 14. The spindles are held in the notches by upstanding flanges 18 on the plates 19 engaging opposite sides of the levers. The lowest plate of the spring may be made thicker so as to replace the levers 14. When the valve spindles are closer together, they may be arranged between the pivots 20 and the points at which the spring bears on the levers; or the levers may be pivoted at their outer ends and engage the spring at points between their pivots and the valves. By variation of the overlap of the leaves of the spring, the spring pressure on one of the valves may be made greater than that on the other. The semi-elliptic spring may be replaced by two quarter-elliptics.
Patent GB-1464462-A (GB)
Title: Process for producing concentrated latex
IPC: C08C1/06
Filed: 1974-04-22
Abstract: 1464462 Concentrated Hevea latex FIRESTONE TIRE & RUBBER CO 22 April 1974 17594/74 Heading C3E A process for producing concentrated latex from fresh Hevea rubber latex, which has an ammonia content of 0À10-0À50% by weight based on the latex and a soluble phosphate level adjusted to a level sufficient to precipitate any magnesium ions present in the latex comprises (A) adding to the rubber latex, preservative in an amount sufficient to inhibit deterioration of the latex by bacterial and enzymatic action for 36 up to 240 hours, and stabilizer in an amount sufficient to provide a mechanical stability (ASTM issue of DÀ1076) in the latex of 300 to 2000 seconds after ageing for 36 to 240 hours; (B) allowing said preserved and stabilized latex to age for 36 to 240 hours, with formation and settling of sludge in said latex; (C) concentrating the resulting sludge-free preserved and stabilized latex by centrifuging to a solids content of 50 to 70% by weight. The sludge may be removed from the preserved and stabilized latex by mechanical means (non-concentrating centrifugal step) during or after ageing, but before concentration. The concentrate may be additionally treated by adjusting the ammonia content to 0À15 to 0À25% by weight and adding further preservative. The substance used to preserve the latex before and/ or after concentration may be selected from formaldehyde; zinc oxide; ammonium pentachlorophenate; potassium pentachlorophenate; sodium pentachlorophenate; boric acid and the alkali metal and ammonium salts thereof; tetraalkali metal and tetra ammonium salts of ethylenediaminetetraacetic acid; sodium or zinc pyridinethione; zinc or alkali metal or ammonium diloweralkyl dithiocarbamates; zinc mercaptobenzothiazole; N -t - butyl - 2 - benzothiazole sulphenamide; and zinc dialkyldithiophosphate or mixtures thereof. The stabilizer is selected from ammonium or alkali metal soluble soaps of saturated or unsaturated fatty acids containing at least ten carbon atoms or an anionic or non-ionic surfactant. The stabilizer may be produced by adding free fatty acid (lauric acid is exemplified) to the latex, said acid reacting with free ammonia in the latex to give the -soap.
Patent GB-455446-A (GB)
Title: Improvements in or relating to grids for electric discharge devices
IPC: H01J19/38
Filed: 1935-06-20
Abstract: 455,446. Discharge apparatus. M-O VALVE CO., Ltd., Electra House, Victoria Embankment, London, and BOYLAND, D. A., and DUKE, S. M., c/o General Electric Co., Ltd., Wembley, Middlesex. June 20, 1935, No. 17723. [Class 39 (i)] A large electric discharge device dissipating at least 10 kw. of power comprises a cylindrical or like closed grid electrode having an area considerably exceeding 10 cm.<2> and a shadow ratio not greater than 1 /100 and consisting of an open mesh built up of intersecting wires, all of the same diameter and rigidly affixed to each other at all their contacts by welding or the like. An increase of rigidity for a smaller shadow ratio is obtained. A grid is shown suitable for a triode adapted to dissipate 50 kw. and comprises 24 parallel wires 1 stretched between ring end supports 3, 31 and a helix 2 wound round them and welded at each contact. Both 1 and 2 are molybdenum wires 0À3 mms. in diameter. The grid is 400 mms. long and 80 mms. wide, and the pitch of the helix is about 10 mms., the mesh thus consisting of approximate squares giving a shadow ratio of 1/900. Specifications 398,101, 439,153, and 441,849 are referred to.
Patent GB-356770-A (GB)
Title: Improvements relating to the stamping of eggs and other articles having other than flat surfaces
IPC: B41F17/30
Filed: 1930-06-10
Abstract: 356,770. Printing on eggs &c. ; platen machines. HANNA, A., Rathfriland, Co. Down, Ireland. June 10, 1930, No. 17776.. Addition to 334,735, [Class 100 (ii), Printing processes &c,[Class 100 (ii).] The machine for stamping eggs &c. described in the parent Specification is modified by providing mechanism for effecting relative lateral or rocking movement between the eggs and the stamps during the stamping operation so that the stamps may follow the shape of the eggs and produce better impressions; the means for supporting the stamps may be modified also. As shown, the rows of eggs 3 are arranged in a tray 2 supported on a table 1 adapted to be raised and lowered by levers 6 actuated by means of a hand-lever 5, or by a treadle, or by power. The table 1 is supported on rails 14 through the intermediary of grooved memoers 15 adapted to allow movement of the table in two directions at right-angles in a horizontal plane. A crank 7 engaging a fork 12 fixed to the underside of the table 1 at the front end thereof is rotatable by means of a handle 9 and drives, through bevel gears 10, 11 having a 2: 1 ratio, a crank engaging a fork at one side of the table, whereby the table is provided with two movements at right-angles resembling a figure eight; the cranks may be arranged to impart lifting movements also to the table. The stamps 4 are attached to the plungers 151 by means of springs 17 so as to adapt themselves to the shape of the eggs, and springs 16 are provided on the plungers to allow vertical movement thereof in accordance with the size of the eggs.
Patent GB-830080-A (GB)
Title: Improvements in or relating to methods of providing a contact on silicon
IPC: H01L21/288
Filed: 1956-06-08
Abstract: 830,080. Semi-conductor devices. PHILIPS ELECTRICAL INDUSTRIES Ltd. June 8, 1956 [June 13, 1955], No. 17794/56. Drawings to Specification. Class 37. An ohmic contact is provided on a body of silicon having a resistivity greater than one ohm cm. by heating a layer of nickel on the silicon to a temperature between 700‹ C. and the melting-point of silicon to diffuse the nickel into the silicon. In one example, a rectifying diode is provided by heating an aluminium wire in contact with a disc of N-type silicon up to 800‹ C. in nitrogen or other inert atmosphere, and then the lower surface of the disc nickelplated by means of an electrolytic bath consisting of NiSO 4 .6H 2 O+NH 4 Cl+H 3 BO 3 +H 2 O. The disc is heated to 800 ‹ C. to diffuse the nickel. The aluminium and nickel may be diffused simultaneously in one heating process. The invention may also be applied to transistors or photo-transistors.
Patent GB-1336758-A (GB)
Title: Drill bit for drilling subterranean formations
IPC: E21B10/46
Filed: 1971-05-28
Abstract: 1336758 Drill-bit M P LEBOURG 28 May 1971 [4 June 1970] 17843/71 Heading B3D [Also in Division E1] In operation of a rotary bit comprising a body having a matrix, passageway 18 across the matrix defining lands 27, and cutting elements 17, carried in the lands, the distance of the leading edge of each land from the surface of the hole 47 is greater than that of its trailing edge. During drilling with fluid supplied at a pressure greater than that of the formation a location on the wall of the hole is subjected to increasing pressure as each land passes followed by a sudden pressure drop accompanied by increased flow as each passageway is reached. 'The lands may be traversed by small water courses. The matrix may be bronze, a nickel copper alloy or a plastics, and the cutting elements may be diamonds, or particles of tungsten carbide, a multiple carbide or non metallic material.
Patent GB-390148-A (GB)
Title: Method of solubilising fatty substances
IPC: C11C1/04
Filed: 1931-06-20
Abstract: A process for introducing a molecule of water into the carboxyl group of oils, fats or fatty acids, thus producing ortho carboxylic acids consists in treating the oils &c. in the cold with sulphuric acid until the product is soluble in water, when water is added and the product is separated.  Oleic acid, or peanut, olive, copra, palm, or castor oil may be treated.  The products, which are stated to be soluble in water, may be warmed with alkali, ammonia or sodium sulphite, carbonate or hypochlorite to form detergents.ALSO:A process for introducing a molecule of water into the carboxyl group of oils, fats and fatty acids consists in treating the oils &c. in the cold with sulphuric acid until the product is soluble in water, when water is added and the product separated.  Fatty acids thus treated yield products of the type <FORM:0390148/III/1> , and are soluble in water Oleic acid, peanut, copra, olive, palm or castor oil or fatty acids from these oils may be treated.  The products may be warmed with alkali, ammonia or sodium sulphite, hypochlorite or carbonate to form liquid detergents.  These detergents may be used as solvents or solubilizing agents in water for paraffin, phenols, higher alcohols, cyclohexanol, essential oils, formic or acetic acid.  Such mixtures may be used in degreasing textiles.
Patent GB-1041064-A (GB)
Title: Mechanical selective conveyor system
IPC: B65G47/48
Filed: 1963-05-07
Abstract: 1,041,064. Endless conveyers. RAPIDS-STANDARD CO. Inc. May 7, 1963 [June 11, 1962], No. 17981/63. Heading B8A. In an endless conveyer 10 carriers 40 are suspended on rollers 24 from an I beam 12, driven by a chain 20, supported against transverse movement by an inverted V beam 26 and provided with pre-settable code means 14 arranged to co-operate with reading and selector unite 16 at discharge stations. The code means 14 comprises an actuator pin 70 and two sets 52, 54 of code pins 50 one pin from each set being elevated by depression of the appropriate keys 62. Each reading and selector unit 1 (Figs. 4, 5) is pivoted by arms 112, 114 to a fixed member 30 and retained in a neutral position by a bumper spring 118 and a tension spring 120. When a carrier approaches a reading and selector unit 16 the actuator pin 70 engages a ramp 124 on a track 108 which forces the unit 16 clockwise against the bumper spring 118 to bring the code pins 50 into contact with a reading surface 102 having two openings 104, 106. If the code matches the compressed bumper spring 118 forces the unit 16 outward into its neutral position causing the openings 104, 106 to pass over the code pins 59 so that the actuator pin 70 enters a branch track 108<SP>11</SP> through an opening 109 forcing the reading and selector unit 16 counterclockwise against the tension spring 120 bringing a roller 43 connected to a discharge member 42 biased by a spring 46 into contact with a cam track 96 forcing the member 42 to pass over a supporting pin 38 on which the load (not shown) is hooked over a groove and thus discharge the load. Alternatively a hanging tray may be tilted to discharge its load, Fig. 9 (not shown). Movement of the reading and selector unit 16 due to correct code matching brings the pins 50 into contact with a slanted surface 100 thus depressing them and erasing the code. An actuator pin pre-setter unit 18 ensures that the actuator pin 70 is in the raised position to initiate reading only provided that one code pin 50 in each of the two sets 52, 54 is raised. If no code is set or only one pin 50 is (accidentally) set the actuator pin 70 is depressed to render it inactive if not already so positioned.
Patent GB-515971-A (GB)
Title: Improvements in photographic colour development
IPC: G03C5/30
Filed: 1938-06-17
Abstract: 515,971. Colour developers. KODAK, Ltd. (Eastman Kodak Co.) June 17, 1938, No. 18049. [Class 98 (ii)] 2:6 - di - iodo - 4 --aminophenol is used as the developing agent in processes of colour development. The colour coupler may be present in the developer or in the sensitive layer. Suitable colour couplers are 4-chloro-o-phenylphenol, 1- (w-cyanacetyl) coumarone, 1-(p-nitrophenyl)-3- methyl-5-pyrazolohe, 8-hydroxy-quinoline; pbenzoyl-acetoacetanilide, di-(o-hydroxybenzal)- cyclohexanone, alpha - naphthol, 2:4 - dichloro -alphanaphthol, and #-naphthoylacetonitrile. The coupler may be used in a water miscible solvent such as acetone. Multilayer or mixed grain emulsion layers containing different couplers in the layers or grains may be used. Specifications 458,664, 458,665, 467,087, 478,942, 478,986, 478,989 and U.S.A. Specification 1,939,231 are referred to.
Patent GB-145738-A (GB)
Title: An improved davit connection for boats
IPC: B63B23/58
Filed: 1920-07-02
Abstract: 145,738. Alveberg, J. J., (Assignee of Braarud, H.). March 6, 1918, [Convention date]. Hooks.-The lower block 6 of boat-lowering gear is connected to the boat by means of a rotatable disk 1 provided with a notch 4 acting as a hook. The disk is secured to the keel of the boat by the rod 2, upon which is mounted a pawl or trigger 8 engaging a notch 7 on the disk 1. By releasing the pawl, the weight of the boat causes the disk 1 to rotate and disengage the falls. The disk 1 may be made heavier on one side to assist disengagement and the pawl 8 may be either spring or gravity controlled.
Patent GB-772276-A (GB)
Title: Improvements in removing fumes generated by rolling mills
IPC: F23J1/00
Filed: 1955-06-22
Abstract: 772,276. Confining dust generated in industrial processes. AKTIEBOLAGET SVENSKA METALLVERKEN. June 22, 1955 [June 24, 1954], No. 18076/55. Class 8(2) Fume e.g., onide dust generated in a rolli,ng mill is carried into a pit 2 beneath each pair of rollers 1 and thence through a duct 3 into a settling basin 4 for cooling liquid by suction effected by an exhaust fan 10 connected with the basin 4 through a duct 9. The air velocity in the space 11 above the liquid in basin 4 is sufficiently low to allow the relatively coarse fume particles to settle. The rolls are enclosed by a plurality of front and rear guard plates suspended from horizontal pivots 27.
Patent GB-983565-A (GB)
Title: Improvements in or relating to bobbin winding machines
IPC: B65H63/036
Filed: 1963-05-07
Abstract: 983,565. Winding yarns. MASCHINENFABRIK SCHWEITZER A.G. May 7,1963 [May 9, 1962; June 1, 1962], No. 18078/63. Heading D1J. [Also in Division H2] A winding machine is provided with means for driving the package at a normal operating speed in a given direction at a reduced speed in this direction, and at a reduced speed in the reverse direction. Under normal winding conditions yarn 38 is wound on a package 32 but in the event of yarn breakage a feeler member 38a acts through control elements firstly to disconnect the drive to the package and to bring it to rest; the package is then driven in the reverse direction to allow thread and finding means to operate and the broken thread ends tied by knotting means (not shown); the package is then driven in the forward direction at reduced speed and if successful knotting is indicated by the sensing means 38a the package is again driven at full speed and normal winding resumed. If, on the other hand, knotting has not been successful reverse rotation of the package and tying of the broken ends is repeated. Drive to the package 32 is transmitted by belt 35 from a pulley 41 mounted on a shaft 39 of a clutch or plate coupling 34. A clutch disc 42 is mounted slidably but driving on the shaft 39 and in a raised position transmits drive from pulley 40 to the shaft 39 for normal rotation of the package; in a lowered position it is brought into contact with a stationary brake disc 43 which acts to arrest rotation of the shaft 39 and thus of the package 32. In an intermediate position the plate 42 is inactive and the shaft 39 may be rotated at the desired reduced forward or reverse speed by driving rollers 48, 49 mounted on a pivotally arranged plate 46. Rollers 48, 49 are brought into frictional contact with a pulley 44 in the desired sequence by means of a push rod 50 controlled by suitable control and timing means. In a modification (Fig. 6 not shown) the package is driven by means of an electronically speed-controlled motor and operation of a series of switches is used to control sequence of speeds and rotational directions of the motor as well as the braking of the wound package (see Division H2). In this embodiment the tying attempts are limited to a predetermined number and a warning signal is operated when this number is reached. Specification 913,752 is referred to.
Patent GB-1038588-A (GB)
Title: A method of producing winding coils for electric machines
IPC: H02K15/12
Filed: 1965-04-29
Abstract: 1,038,588. Insulation for dynamo-electric machines. SIEMENS-SCHUCKERTWERKE A.G. April 29, 1965 [April 30, 1964], No. 18167/65. Heading H2A. Insulating tape 6 is interposed between adjacent layers 7 (Fig. 2, not shown) of a winding overhang and extends a short distance into the slot insulation 8 (Fig. 3, not shown), and in addition, in the zone adjacent the slot exit, insulation 10 separates the conductor columns and is wound round the whole coil. Also this zone may be covered with a viscous silicone rubber &c.. before the slot-portion covering 8 is applied. This covering is cured, several coils at a time in a multiple platen press. The coils are then shaped.
Patent GB-630747-A (GB)
Title: Improvements in or relating to multi-stage axial-flow compressors
IPC: F04D29/54
Filed: 1947-07-09
Abstract: 630,747. Axial-flow compressors. TAYLOR, G. S. July 9,1947, No. 18201. [Classes 110(i) and 110(iii)] Auxiliary blades are mounted between the main blades of a multi-stage rotor or stator to prevent stalling. Each auxiliary blade 15 is secured to the inner platform 13 of an adjacent main stator blade 11. The blades 15, which may be used in the first few stages only, have a chordal width of ¢-2/3 of that of the blades 11 and are somewhat less than half the length of the latter. The trailing edges of all the blades lie in the s a m e transverse plane. A wire 16 is threaded through the blades and welded or otherwise secured to them.
Patent GB-186982-A (GB)
Title: Improvements in alloy iron
IPC: C21C7/00
Filed: 1921-07-06
Abstract: 186,982. Gillott, J. C. July 6, 1921. Alloys.-Workable low-carbon iron alloys containing chromium in smaller proportion than iron are made by blowing in a converter molten metal containing carbon, intentional overblowing being avoided. The charge to be blown may consist of ferro-chromium diluted with pig-iron, scrap steel, or other form of iron; or high-carbon iron may be mixed with low-carbon ferro-chromium, or highcarbon ferro-chromium may be mixed with lowcarbon iron; or both materials may contain carbon. Silicon is preferably present in or added to the charge in sufficient proportion to raise the temperature by oxidation during the blowing. The finished alloy is deoxidized by means of manganese or other deoxidizer.
Patent GB-661633-A (GB)
Title: Improvements relating to dynamo-electric machines
IPC: H02K5/167
Filed: 1949-07-11
Abstract: 661,633. Lubricating dynamo - electric machines. BRITISH THOMSON-HOUSTON CO., Ltd. July 11, 1949 [July 14, 1948], No. 18269/49. Class 35. The lubrication of a unit-type bearing dynamo-electric machine is effected by a wick one end of which is placed in contact with lubricant absorbent material 36 positioned in a cavity 15 formed by a frame web portion 5 and a cover member 14, the wick extending over the only bearing 6 to feed the latter with lubricant which returns by grooves 16 in the shaft 7 to the cavity or reservoir 15. The wick has a plurality of axially extending legs 23 corresponding to a number of openings 21 formed in the web portion 5. Fig. 2 shows the shape of the wick, the ring'portiori 42 of which together with packing and thrust rings are placed at the end of the shaft remote from the cavity 15. The rotor 9 is mounted on the shaft extension 8 so as to allow the rest of the shaft to be journalled in a long bearing 6.
Patent GB-519618-A (GB)
Title: Improvements in and relating to, aqueous emulsions of wax and allied materials and to products and articles containing, impregnated, coated, or surface-sized with the same or resulting from treatment with the same
IPC: D21H17/62
Filed: 1938-06-20
Abstract: 519,618. Emulsions. DICKESON, T. W. June 20, 1938, No. 18298. [Class 1 (i)] [Also in Group VIII] Paper and like products and textile fibres are sized or waxed by treatment with an emulsion of a wax, or the like, e.g., of paraffin wax or paraffin wax and rosin, the emulsion being produced by the use as emulsifying agent of a gelatinous metallic hydroxide or oxide other than activated gelatinous alumina as described in Specification 487,855. Aluminium, zinc and copper hydroxides are mentioned as suitable emulsifying agents. According to an example an emulsion is produced by adding melted paraffin wax to a boiling suspension of aluminium hydroxide. The emulsions mav be applied in paper making by addition to the pulp in the beaters or may be applied to the unsized or partly sized surface by dipping and heating to melt the wax and evaporate the water.
Patent GB-136122-A (GB)
Title: Improvements in and relating to Dibbles for use in Sowing Seeds or Transplanting.
Inventor: JOHN EBENEZER WILLIAM
IPC: A01C7/02
Filed: 1919-07-23
Abstract: 136,122. John, E. W. July 23, 1919. Planting-tools.-A hand dibble of the type in which ground-penetrating members A, A' pivoted at B and provided with handles F, F<1> are adapted to make the hole for the seed-plant or the like which is inserted into the ground between the members, has a depth-adjusting foot K slidably mounted in guides H, J on the member A. The shank G of the foot K is graduated and a clamping-screw H<1> is provided to maintain the foot at any predetermined position. A container M for seeds &c. may be detachably fitted on the handle F<1> of the other ground-penetrating member.