baber/WOPTO huggingface dataset:
Patent GB-114316-A (GB)
Title: Improvements in a Process for the Recovery of Gold, Silver and Radium from Extremely Dilute Solutions, particulary Sea-Water.
Inventor: BAUR EMIL
IPC: C01G5/00
Filed: 1918-03-22
Abstract: 114,316. Baur, E., and Nagel, O. Jan. 18, 1917, [Convention date]. Gold, silver, and radium salts. - Gold, silver, and radium compounds are recovered from extremely dilute solutions such as sea-water by adding to the water a colloidal solution of carbon such as the solution obtained by treating lamp-black or the like with extremely dilute alkali solutions, of Chinese ink or the graphite suspension known as " Aquadag," which is a registered trade mark. and then adding a positive sol such as ferric hydroxide to flocculate the carbon. The flocculated carbon containing the adsorbed metal compounds is then filtered off. Specification 16898/13 is referred to.
Patent GB-1407482-A (GB)
Title: Ore separation
IPC: B07C5/342
Filed: 1972-08-23
Abstract: 1407482 Separating solid particles T C MATHEWS 23 Aug 1972 [23 Aug 1971] 5106/72 Divided out of 1407481 Heading B2H  The subject-matter of this specification is substantially the same as that described with reference to Figs. 3 and 4 of the parent specification but the invention is directed to an apparatus for separating first and second types of solid particles, the particles of the first type having a measureable property not associated with the particles of the second type, comprising a screen conveyor having an inclined separation section, sensing means extending across the width of said section for detecting the measurable property of particles of the first type along said width and providing control signals, separating means extending across the width of said section on an opposite side thereof from said sensing means and including means forming a plurality of flowing fluid streams and means responsive to said signals for causing the flowing fluid streams to flow through said conveyor to provide selective impingement of the flowing fluid streams on particles of the first type to separate those particles from the particles of the second type.
Patent GB-548806-A (GB)
Title: Manufacture of a vat dyestuff
IPC: C09B7/10
Filed: 1941-04-21
Abstract: 548,806. Thioindigoid dyes. WILKINSON, D. G., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. April 21, 1941, No. 5111. [Class 2 (iii) and 15 (ii)] A dyestuff suitable for dyeing cotton and printing viscose is obtained by condensing 6- chlor - 4 - methyl - 3 - hydroxythionaphthene with 7-methyl 3- hydroxythionapththene, one of the components being in the form of the reactive 2-derivative of the corresponding quinone. In examples, p-dimethylaminoanil of 6 - chlor - 4 - methylthionaphthene - 2:3 - quinone is condensed with 7-methyl-3-hydroxythionaphthene and p-hydroxyanil of 7-methylthionaphthene-2:3-quinone with 6-chlor-4- methyl-3-hydroxythionaphthene. In a further example, the leuco ester salt of the dyestuff is prepared by treating it with copper powder and sodium-pyrosulphate in pyridine and adding caustic soda. p - Hydroxyanil of 7 -methylthionaphthene - 2:3-quinone is prepared from p-nitrosophenol and 3-hydroxy-7-methylthionaphthene.
Patent GB-1465543-A (GB)
Title: Alternating copolymer
IPC: C08F220/12
Filed: 1974-02-04
Abstract: 1465543 Production of alternating copolymers SUMITOMO CHEMICAL CO Ltd 4 Feb 1974 [2 Feb 1973] 05129/74 Heading C3P An alternating copolymer is produced by the alternating copolymerization of an A group monomer comprising at least one olefin having from 3 to 20 carbon atoms and/or at least one halogen-substituted olefin having from 3 to 20 carbon atoms, with B group monomers comprising at least one acrylic ester, and at least one alpha, beta-ethylenically unsaturated dicarboxylic acid or derivative thereof, said acid or derivative having the formula (in which Y and Z, which may be the same or different, are each -O-, -S-, or -NR<SP>3</SP>-; and R<SP>1</SP>, R<SP>2</SP> and R<SP>3</SP>, which may be the same or different, are each a hydrogen atom or a hydrocarbon group having from 1 to 20 carbon atoms) in the presence of a Lewis acid complexing agent which is a halogen-containing compound of a metal from Groups IIb, IIIb or IVb of Mendeleev's Periodic Table, to produce a copolymer in which units from said A group monomer alternate with units from said B group monomers. Other monomers which may be included together with the said A group monomer and B group monomers are specified. Examples are given in which copolymers are produced from (a) isobutylene, methyl acrylate and maleic anhydride; (b) isobutylene, ethyl acrylate and diethyl maleate; (c) propylene, nbutyl acrylate and maleic anhydride; (d) monomers as in (a) together with styrene as an A group monomer or acryloyl chloride as a B group monomer.
Patent GB-273359-A (GB)
Title: Improvements in rotary compressors, pumps and the like
IPC: F04C18/344
Filed: 1926-02-23
Abstract: 273,359. Broom, H. S. Feb. 23, 1926. Fixed-abutment type; discharge and suction pipes and passages for pumps, blowers, and exhausters; packing drums.-In a rotary pump or the like comprising a rotor with a number of radially sliding vanes eccentrically mounted within an outer freely rotatable cylinder 21 which is provided with inwardly projecting flanges or rings 20 formed with sleeves 41 adapted to be mounted in ball bearings on the fixed supporting casing, interior ported plates 38 fixed to the casing and abutting against the ends of the rotor give communication with the working space. Access of pressure fluid to the cylinder-carrying flanges or rings 20 may be prevented by casting the fixed ported plates 38 with another wall 39 to form an enclosed space and a, sleeve 37 which abuts against a ring portion 46 of a member 45 which contains the pressure fluid outlet and carries the bearings for the rotor shaft 10. The member 45 is secured to the casing bracket 42 which carries the ball bearings for supporting the rotary cylinder 21. Labyrinth packing is provided between the fixed ported plates 38 and the rotary cylinder 21. The fixed ported plates may be pressed against the rotor by a spring mounting and the ports therein may co-operate with supply and discharge, passages in the rotor body the ports of which are situated radially inward of the vane. slots.
Patent GB-178078-A (GB)
Title: Improvements in surface measuring machines
IPC: G01B5/26
Filed: 1922-02-22
Abstract: 178,078. Krupp Akt.-Ges., F. April 4, 1921, [Convention date]. Surface areas, computing.-In Sawyer-type leather-measuring machines, the measuring- wheels 10 control the toothed wheels 15 connected with the indicator-actuating cords in such a way that the cords are not affected until two adjacent measuring wheels are both engaged by the surface to be measured. The levers 11<2>, 11<3>, &c. other than the first 11, which support the measuring-wheels 10, each carry a pair of adjustable stops 11<4>, 11<5>, 11<6>, &c., so arranged that the weighted levers 14, 14<1>, 14<2>, &c., by which the toothed wheels 15 are brought into engagement with the driving-pinions 17, 17<1>, 17<2>, &c., each bear against the stops of two adjacent levers 11<2> &c.
Patent GB-494390-A (GB)
Title: Improvements in hydrogen sulphide recovery
IPC: C01G9/08
Filed: 1938-02-19
Abstract: Hydrogen sulphide is recovered from waste hydrogen sulphide gases by scrubbing the gases with an aqueous slurry of milk of lime, whereby a solution of calcium sulphydrate is formed, which is then freed from solids (e.g. unreacted calcium hydroxide, calcium carbonate or calcium sulphite) and then treated with acid to regenerate hydrogen sulphide.  The scrubbing step is carried out at a low temperature, e.g. below 30 DEG  C. to avoid formation of calcium polysulphide or thiosulphate.  The process is particularly applied to the recovery of hydrogen sulphide in the manufacture of pigment zinc sulphide by precipitation, for example, as described in Specification 435,287, in which waste gases containing a high percentage of hydrogen sulphide and also a waste acid solution containing dissolved hydrogen sulphide are obtained.  The hydrogen sulphide is expelled from this solution by agitation with air and mixed with the waste gases.  These are then treated in a series of scrubbers fitted with Venturi-tube eductors so that the hydrogen sulphide containing gases are treated in countercurrent with the aqueous slurry of milk of lime, from scrubber to scrubber, and accompanied by recirculation of both gases and slurry in each scrubber.  The calcium sulphydrate solution is filtered and then treated with acid, preferably the waste acid which has been previously degassed.  The liquor effluent from the hydrogen sulphide generator may contain a small concentration of hydrogen sulphide and may be added to the degassers for the waste acid.
Patent GB-391575-A (GB)
Title: Improvements in or relating to steam superheaters for locomotives
IPC: F22G7/06
Filed: 1932-02-23
Abstract: 391,575. Steam superheaters. SUPERHEATER CO., Ltd. and STEWART, W., Bush House, Aldwych, London. Feb. 23, 1932, No. 5342. Addition to 321,734, [Class 123 (iii), Steam separators &c.]. [Class 123 (iii).] In a combined steam superheater header and valve housing having the duct 16 conveying superheated steam from alternate transverse header chambers 6 to the upper chamber 17 of the valve housing disposed on the side of the housing away from the boiler tube plate, as described in the parent Specification, the transverse header chambers are separated by spaces open at their front ends as described in Specification 17618/13, [Class 123 (iii), Steam separators &c.], and the balancing chamber 19 in the valve housing extends over the longitudinal saturated steam channel 1 which opens into alternate transverse header chambers 5. The outlet neckings 25 from the delivery chamber 18 of the valve housing extend forwardly above the portions of the duct 16 connected to the end transverse superheated steam chambers. Specifications 351,088, [Group XXIX], and 382,642 are also referred to.
Patent GB-113363-A (GB)
Title: Improvements in or relating to Gear Cutting.
Inventor: WADE HAROLD
IPC: B23F9/10
Filed: 1917-04-16
Abstract: 113,363. Wade, H., (Gleason Works). April 16, 1917. Gear-cutting. - Curved teeth or blades are cut on wheels &c. by moving a tool in a curved path to shape the teeth, imparting a continuous indexing movement to the blank, and simultaneously producing a relative rolling motion between the blank and tool to generate the tooth. One form of machine comprises a bed 2 with ways 3 engaged by tracks 4 on the tool-head support 5. A .standard 6 horizontally adjustable on the support 5 has guidewavs 7 for a housing 8, in which a spindle 9 carrying the tool-head 10, is adjustably mounted. The spindle 9 is driven by the shaft 12 through bevelwheels 15, shaft 16, bevel-wheel 18, slidable shaft 17, bevel-wheels 19, 20, shaft 21, gear-wheels 22, 23, shaft 24, pinion 25, and internal gear-wheel 11. The blank 26 ie mounted on a carrier 27 oscillated by the shaft 12 through bevel-wheels 63, gear-wheels 61, 60, shaft 59, gear-wheels 58, 57, 56, shaft 55, reversible shaft 54, gear-wheels 52, 51, shafts 48, 47, gear-wheels 46, 45, 44, 43, shaft 42, differential-gear 41, shafts 37, 36, 35, 33, and worm and worm-wheel 28. The rolling movement of the tool-head support 5 is effected by the shaft 48, which drives a shaft carrying a worm engaging a segmental worm-wheel on the support. By this arrangement, a generating movement is imparted to the blank-carrier through the differential 41 in accordance with the movements of the support 5. For indexing the blank, the shaft 55 drives a gear-wheel 77 on the sleeve 40 of the differential through shafts 70, 72 and gear-wheels 75, 76. The shaft 54 is driven alternately in opposite directions by the shaft 55 through the gear-wheels 91, 89 and the gear-wheel 93, an idler, and gear-wheel 90. The change of drive is effected by pawls 95, 96 operated by an oscillating lever, which is actuated by a cam on a shaft driven by the shaft 55. The blank-carrier is adjustably mounted on a table 106, which is adapted to be swung about the central axis 36 to feed the blank to the tools. Milling-cutters.-In one arrangement of tools, alternate tools have their cutting-edges extending in opposite directions, so that, for each setting of the blank, only every alternate tool will operate. After the teeth are completed on one side, the blank is reset to enable the other tools to operate. In another arrangement, the tools are in pairs, the tools of each pair passing in succession through a tooth space and operating on adjacent sides of adjacent teeth. One form of cutter is shown in Fig. 20. The cutters may be adjustably mounted on the tool head by means of bolts and wedges.
Patent GB-987762-A (GB)
Title: Improvements relating to self-disengaging rotary drive mechanisms and devices incorporating the same
IPC: G04F3/06
Filed: 1962-02-13
Abstract: 987,762. Clutch control. AUTOMATIC TIMING & CONTROLS Inc. Feb. 13, 1962 [Feb. 13, 1961], No. 5462/62. Heading F2L. [Also in Division H2] Depression of a button closes switches and initiates a drive to rotate a preset pointer back to zero, whereupon the drive is uncoupled and the switches opened. Knob 13 is turned to set a flange 15a to a desired time interval which is indicated on a scale on face-plate 11 by a pointer 25 held in contact with flange 15a by spring 40 secured to the freely rotatable shaft 26. The button 20 is then depressed and moves shaft 26 axially thereby pivoting an actuator plate 50 about pin 51 against the action of spring 55. Arms 63, 64 on plate 50 depress the operating members of switches 70 and 71 respectively, and the plate 50 is locked in this operated condition by a notch in a latch 80 which pivots about pin 78 under action of spring 79. Actuator 50 thereby holds shaft 26 in its operated axial position by virtue of a spring-urged collar thereon (Fig. 6, not shown) behind the collar 44 and in this position of shaft 26 flanges on pointer 25 are held in frictional engagement with a rubber ring 32 mounted on gear-wheel 36. One switch energizes a synchronous motor 60 which drives shaft 61 to rotate gear-wheel 36 clockwise and thereby slowly returns pointer 25 to the zero position. As pointer 25 approaches the zero position it engages the end of a trip arm 91 and turns a block 89 about fixed pivot 90, causing a depending pin 88 to move latch 80 to the left. This releases actuator 50 which restores shaft 26, freeing pointer 25 from the clutch ring 32, and also restores switches 70 and 71, one of which switches off the motor 60. Specification 920,703 is referred to.
Patent GB-1148964-A (GB)
Title: Improved fluid flow control valve
IPC: F16K11/20
Filed: 1967-02-06
Abstract: 1,148,964. Valves. ALLIED CHEMICAL CORP. 6 Feb., 1967 [15 Feb., 1966], No. 5529/67. Heading F2V. A valve, for discharging either liquid or vapour from a pressurized container of liquefied gas, comprises a valve body 1 attachable to the container by screw threads 3 and having vapour and liquid inlet ducts 4, 5 respectively, the ducts being selectively connectible to a passage 8 by appropriate positioning of a hollow cock 23, which cock has two inlet apertures, of which only one, 27, is shown, and two outlet apertures 25, 26, and is rotatable by a handle 30 between two operative positions delimited by stops (31, 32, Fig. 2, not shown), the handle also serving as a position indicator. A further closure member 12, movable on to a valve seat 43 by means of a threaded spindle 17 acting on a metallic diaphragm 13 and biased away from the seat by a spring 20, controls the flow of fluid between the passage 8 and a chamber 9 which communicates with an outlet port (10, Fig. 2). A relief valve 34 prevents excessive build up of pressure within vapour duct 4.
Patent GB-451408-A (GB)
Title: An outer cover for a ball to be used in sports, more particularly in football
IPC: A63B41/08
Filed: 1936-02-24
Abstract: 451,408. Balls for games. SENGERS, J. H. J., 22, Julianalaan, and POST, M., 54, Coenderstraat, both in Delft, Holland. Feb, 24, 1936, No. 5558. Convention date, March 2, 1935. [Class 132 (ii)] In a football or like sports ball one section of the outer casing is made in two layers. A cut 2 is made in the upper layer 1 and the lower layer 3 is cut away at 4 to form a tongue 5 the free edge of which remote from the cut 2 is recessed at 6. The tongue 5 is preferably reinforced, for example, by doubling it. When the bladder 7 is introduced, the inflating neck 8 is located in the recess 6 and extends through the cut 2, and during inflation pressure is exerted on the outer cover as indicated by the arrow 9 to prevent the squeezing of the neck. After inflation the neck is tied by a string 10 and pushed between the layers 1, 3, into the space 4 the string 10 being slipped between the layers 1, 2, to facilitate withdrawal of the neck. The invention is also applicable to an outer cover in which the bladder is inserted between a free edge of the upper and lower layers.
Patent GB-1029105-A (GB)
Title: Laying reinforced concrete paving
IPC: E01C19/34
Filed: 1965-02-09
Abstract: 1,029,105. Laying road materials. REX CHAINBELT Inc. Feb. 9, 1965 [Feb. 24, 1964], No. 5566/65. Heading E1G. The reinforcing mesh M of concrete paving is tamped into the plastic concrete S by a plurality of blades 31 having a walking motion to prevent horizontal shift of the mesh. The blades 31 are attached to a rectangular frame 168 suspended on connecting rods 56 eccentrically mounted at their upper ends on shafts 57, 58 rotated through gearing 65, 66 by a prime mover. A roller 86 on the forward side of the frame 168 contacts a guide 85 to give a true vertical downward movement to the blades regardless of the continuous forward motion of the apparatus, the mesh M being vibrated into position. The shafts 57, 58 are carried in a pair of frames 161 running on form engaging wheels 52 and pivotted at the centre with adjusting means to provide for camber in the concrete surface, the shafts being universally jointed in the plane of the pivot. The depth of the mesh M may be determined by stops 138 and jacks 133 which raise or lower the frames 161 relative to the wheels 52. In laying a road surface on foundation B concrete C is poured from a vehicle V and levelled by a power spreader 21, reinforcing mats M are laid on top of the plastic concrete from a truck 22 and are tamped to predetermined depth by blades 31. A first screed 128 follows the blades and is followed by a final surfacer 25. The screed 128 is pushed by a bar 154 and has support brackets 143 depending from a circular section rail 144 reciprocating on rollers 145. The rollers may be lifted to adjust the height of the screed by jacks 152; unequal lifting on opposite ends providing for camber or banking of the finished surface.
Patent GB-1142072-A (GB)
Title: Polybenzoxazoles and process for their production
IPC: C08G73/22
Filed: 1966-02-09
Abstract: 1,142,072. Polybenzoxazoles. GENERAL ELECTRIC CO. 9 Feb., 1966 [9 Feb., 1965], No. 5716/66. Heading C3R. The invention comprises polybenzoxazoles containing more than 30 units of formula R and R<SP>1</SP> are hydrocarbon radicals, q is from 1 to 8, n is 0 or 1, and the bonds of A are para to either of the oxygen and nitrogen atoms. The polymers are prepared by reacting phthalic anhydride with diamino compounds of formula either the starting materials are heated to obtain the polymer, or the starting materials are reacted without heat to obtain an intermediate amide or low molecular weight polymer which is then heated to give the final polymer. In examples, phthalic anhydride is reacted with 3,3<SP>1</SP>-dihydroxybenzidine, 3,31 - diamino - 4,4<SP>1</SP> - dihydroxybiphenyl, 2,2<SP>1</SP>- bis - (3 - amino - 4 - hydroxyphenyl) - propane and 3,3<SP>1 </SP>- diamino- 4,4<SP>1</SP> - dihydroxydiphenylsulphone. Other diamino compounds mentioned are 3,3<SP>1</SP>-dihydroxy - 4,4<SP>1 </SP>- diamino diphenyloxide, bis - (3- hydroxy - 4 - aminophenyl) - methane, 3,3<SP>1</SP>- dihydroxy - 4,4<SP>1 </SP>- diamino dibenzophenone, 1,2 - bis - (3 - hydroxy - 4 - aminophenyl) ethane, 1,3 - bis - (3 - hydroxy - 4 - aminophenyl) propropane and 2,2 - bis - (3 - hydroxy - 4 - amino phenyl) propane.
Patent GB-755989-A (GB)
Title: Improvements in callipers
IPC: G01B3/16
Filed: 1954-02-26
Abstract: 755,989. Callipers. LANCEFIELD, S. S. Feb. 23, 1955 [Feb. 26, 1954], No. 5734/54. Class 106 (2). A calliper gauge comprises two crossed arms pivoted together, each arm being suitably bent on each side of the pivot P so as to provide one limb 1, 4, 5 of an outside calliper on each side of the pivot P, the distances from the pivot to the measuring face of each limb being equal and the limbs 4, 5 on at least one side of the pivot being straight with inturned ends. The limbs 1 on one side of the pivot P are arcuate and the limbs 4, 5 on the other side have straight sides which are spaced by unequal amounts from the central line A, B. The distance apart of the measuring faces of one pair of limbs which contact a workpiece is the same as that of the other pair and can be measuredwith a rule. The different forms of the limbs provide for gauging differently shaped objects. A tightness adjustment is provided at the pivot P.
Patent GB-1131396-A (GB)
Title: Clutch arrangement
Inventor: CLEMENTS HERBERT ARTHUR
IPC: F16D23/10
Filed: 1966-02-09
Abstract: 1,131,396. Ratchet clutches. S.S.S. PATENTS Ltd. 1 Feb., 1967 [9 Feb., 1966], No. 5744/68. Addition to 977,714. Heading F2C. A synchronous self-shifting clutch with a single set of dog teeth between the driving or driven element and the intermediate splined member incorporates a flexible driving connection to accommodate limited misalignment between the clutch members. In the arrangement of Fig. 1 clutch member 1 is engageable by teeth 3, 10 with the intermediate splined sleeve 6 carrying the overrun pawls 12 and splined to a further sleeve 15 connected to the second clutch member 5 by a flexible diaphragm 18. Further flexibility is provided by clearance between the dog teeth 3, 10 of members 1, 6. In a second form, Fig. 2, a sleeve 41 is directly coupled to a clutch member 38 by dog teeth 42, 43 and indirectly coupled to a second clutch member 32, 33 by an intermediate splined sleeve 46 through dog teeth 47, 49, the desired flexibility being provided by clearances between the sets of teeth 42, 43 and 47, 49. A dashpot piston 59 works in a chamber 37 formed by sleeve 35, 36 located between sleeves 41, 50, the latter having teeth 55 engageable by the overrun pawls 56 on the clutch element 38.
Patent GB-212570-A (GB)
Title: Improvements in and relating to the detection of rays of great wave length
IPC: G02B23/12
Filed: 1924-03-06
Abstract: 212,570. Infra Rouge (ProcÚdÚs Charbonneau) Soc. Anon., (Assignees of Patto, E.). March 7, 1923. [Convention date]. Void [Published under Sect. 91 of the Act]. Infra-red rays, telegraphy, telephony, and control of apparatus by.-An apparatus for the visual detection of infra-red rays comprises a parabolic reflector 7 by which the rays are focussed on a sensitive band 1 impregnated with a substance obtained by the reaction of mercuric chloride and silver iodide. The band 1 is endless and is driven by a motor 4 controlled by a rheostat 6. The received rays discolour the band and produce thereon a visible line, which, however, resumes its original appearance after the lapse of a few seconds. The speed of the band is regulated according to the intensity of the rays. The apparatus is mounted on trunnions permitting the direction of the axis of the reflector to be universally adjusted. The visible indication is seen through an eyepiece projecting centrally through the reflector. The presence of any object crossing the beam of rays is detected by the interruption of the visible line.