baber/WOPTO huggingface dataset:
Patent GB-503193-A (GB)
Abstract: 503,193. Producing iron-free copper solutions. NEW PROCESS RAYON, Inc. Sept. 29, 1937, No. 26364. Convention date, Oct. 3, 1936. [Classes 1 (ii) and 1 (iii)] A method of producing an iron-free copper solution from one containing iron in the ferric state comprises the addition to the solution of a soluble compound, (e.g. phosphoric, pyro phosphoric or arsenic acid, or salts thereof) containing an acid radical which forms a ferric salt much more insoluble in dilute acid than basic ferric sulphate, and a copper salt not substantially less soluble in. dilute acid than basic copper sulphate, this radical being present in at least sufficient quantity to combine with all the iron, and subsequently bringing the pH value to a point at which all the iron is precipitated and the major part of the copper is obtained in soluble form, a minor part being precipitated. Preferably, from 1 to 5À7 per cent of the copper is precipitated as say basic copper sulphate with, for example, the ferric phosphate or arsenate. The mixed precipitate may be treated with acid, e.g. sulphuric acid, to dissolve the copper. The invention is particularly described with reference to the use of phosphoric acid and its salts, and to the treatment of iron-containing copper sulphate solutions obtained in the regeneration of cellulose from cupro-ammonium solutions. The solution treated should contain free acid, sulphuric acid, for example, being added when phosphates, e.g. trisodium phosphate are employed. When necessary, the copper solutions are initially treated with an oxidizing agent for the iron. The purified copper sulphate solution may be treated with alkali to produce basic copper sulphate, which may be further treated with alkali to produce copper hydroxide. According to a modification of the invention, a water-suspended paste .containing copper and iron hydroxides is treated with sodium hypochlorite to oxidize the iron, a solution of disodium phosphate is stirred in to form ferric phosphate, and the paste is treated with sulphuric acid to precipitate the iron and to dissolve the copper. A statement of the art refers to dissolving crude copper residues in weak acids, and adding ammonia to the solution to dissolve the copper as tetramin compounds, the iron precipitating being filtered off.
Patent GB-1526530-A (GB)
Title: Motor vehicle steering wheel
IPC: B62D1/06
Filed: 1976-12-03
Abstract: 1526530 Steering wheels FORD MOTOR CO Ltd 3 Dec 1976 [19 Dec 1975] 50405/76 Heading B7J A steering wheel has a pair of arcuate leaf springs 28, 30, Fig. 3, which overlay a flat annular leaf spring core 24 adjacent the outer end of each wheel spoke 16 so that when the rim is deflected the stress is reduced in the rim core where it is attached to the spokes. Specifications 1,518,729, 1,518,760 and 1,516,948 are referred to.
Patent GB-1369728-A (GB)
Title: Work tables for machine tools such as radial drilling machines and milling machines
IPC: B23Q3/10
Filed: 1972-11-01
Abstract: 1369728 Work tables S M MICKELSSON and S HALL 1 Nov 1972 [5 Nov 1971] 50432/72 Heading B3B A work-table, e.g. for a radial drilling or a milling machine tool, comprises a horizontal and a vertical clamping surface with T-slots 2 and wherein at least one of said T-slots opens into a longitudinally extending cavity 3 in which is arranged a clamping bar 4, the said bar 4 containing a T-groove extending along its complete length and being adjustably movable longitudinally of the cavity 3 and also movable perpendicularly to the respective clamping surface to clamp and release a workpiece 9. Power sources 6a, e.g. hydraulic, pneumatic, or remotely operated links, levers or eccentrics devices, act to move the clamping bar 4 to clamp a workpiece 9 by means of a T-bolt 7 and clamp 8. The clamping bar 4 may be moved towards the clamping surface to pivot a clamp to grip a workpieee, or to release a workpiece to enable it to be indexed on a turn-table. The workpiece may be mounted on support bars and/or against an end stop, or directly on the clamping surface. The power sources 6a may be applied at two spaced positions along the clamping bar 4 and clamping movements at each point may be different. Coarse clamping adjustment is performed on nuts on the T-bolt 7 and final clamping is applied by the power sources 6a.
Patent GB-504720-A (GB)
Abstract: 504,720. Cables ; joints. STANDARD TELEPHONES & CABLES, Ltd., SCOTT, T. R., and WEBB, J. K. Oct. 26, 1937, No. 29224. [Classes 36 and 38 (i)] Barrier joints or terminations in impregnated power cables are prepared by building up the insulation around the core or cores with tapes of fibrous insulating material impregnated with polymerized material, basting the impregnated tapes with polymerizable materials at intervals during the building-up operation and disposing a protective sleeve around the built-up insulation. The tapes may be impregnated with polystyrene and they may be basted with monomeric or partially polymerized styrene; the styrene may be blended with one or more other monomers, e.g. p-divinyl benzene. The tapes may be completely impregnated with polymer or merely lacquered or surface impregnated therewith, in which case the tapes may be pre-impregnated with hydrocarbon or like compound. Styrene stabilized with quinone and treated so that the induction period is over may be used ; also, the monomer may contain accelerators, e.g. benzoyl peroxide. Plasticizers, e.g. abalyn, methyl, ethyl or propyl naphthalene, phenanthrene, fluorene or diphenyl, or fillers may also be added. A polymerizable material may be used for basting which is different from the polymerized material used as impregnant. Spaces in joints may be filled with a material, e.g. rubber, which is swollen by the monomer and the joint or termination may finally be evacuated and filled with monomer which is then polymerized, or layers of tinned copper tape may be wound tightly over the joint insulation and soldered together and to the sheaths, a sleeve being applied overall; or the sleeve may be applied directly over the insulation and the space filled with a lead tin alloy. A joint in a belted multicore cable may be prepared by building up the insulation around the cores as above, filling the worming spaces with a liquid or plastic insulating material which will solidify and forming a barrier in the belt insulation with impregnated tapes basted at intervals as above. In the case of impregnated screened multicore cables, the barrier in the worming spaces may be of metal. In the case of terminations, the stranded conductor may be filled with solder and a solid ferrule applied thereto, the tapes being taken over the ferrule and metal filling or a swelling material may be encased in a short plumbed metal sleeve at the termination of the sheath. For multicore cables, the insulated cores may be threaded into an end cap fitted with exit pipes, the insulation being built up around the protruding cores, or the insulation of each core may be built up and thereafter threaded into an end cap, either of metal or insulating material. Specifications 429,611; 464,923, (Group VIII], and 492,331 are referred to.
Patent GB-1345378-A (GB)
Title: Flame retardant polyurethane foams
IPC: C08G18/67
Filed: 1971-11-02
Abstract: 1345378 Polyalkylene glycol vinyl phosphates STAUFFER CHEMICAL CO 2 Nov 1971 [2 Nov 1970] 50792/71 Heading C2P [Also in Division C3] Polyalkylene glycol vinyl phosphates of the formula wherein R is a polyalkylene glycol residue, n is an integer from 1 to 100, R<SP>1</SP> is a hydrogen atom, a C 1-4  alkyl or a C 1-4  haloalkyl group, Z and Y, which may be the same or different, are a hydrogen atom, a halogen atom or a C 1-4  alkyl group are prepared by transesterifying a trialkyl or triaryl phosphite with a polyalkylene glycol and reacting the product with a carbonyl compound of the formula wherein R<SP>1</SP>, Z and Y are as defined above and X is bromine or chlorine. The value of n in the above formula is suitably not greater than 10. Numerous polyalkylene glycol vinyl phosphates are listed. In an Example, (1) poly-(dipropylene glycol-#,#-dichlorovinyl phosphate), n = 6 is prepared by reacting dipropylene glycol with trimethyl phosphite, followed by reaction of the product with chloral. Other examples describe the preparation of similar compounds from (2) tripropylene glycol, trimethyl phosphite and chloral, (3) diethylene glycol or triethylene glycol, trimethyl phosphite and chloral and (4) dipropylene glycol, trimethylphosphite and bromal or trichloroacetone.
Patent GB-1076409-A (GB)
Title: Improvements in and relating to rotating cylinder internal combustion engines
IPC: F02B53/00
Filed: 1963-12-30
Abstract: 1,076,409. Revolving cylinder engines. W.FRANKE. Dec.30, 1963 [Dec.29, 1962], No. 51112/63. Heading F1B. A revolving cylinder engine comprises a piston 3 reciprocating in an open-ended bore 4 in the rotating cylinder block 2, the piston being guided by a pin 14, Fig. 6, in the stationary casing engaging a groove 15 in the piston or vice versa. The groove 15 is a closed curve of such shape that the centre of the piston follows a closed path a major part of which is disposed to one side of the axis of the block 2. The open ends of the cylinder 4 co-operate with a spark plug 8 and an inlet and exhaust port system 5. The interior of casing 1 is lined with an adjustable bush (24) Fig. 9 (not shown) provided with two exhaust apertures (26), (27) and an inlet aperture (25) which co-operate with an exhaust aperture (32) Fig. 8 (not shown) in the casing 1 and two inlet apertures (30), (31). Adjustment of the bush 24 brings one or other of the ports (26), (27) opposite the aperture (32) and a corresponding aperture (30), (31) opposite the aperture (25). In Fig. 10 (not shown) the piston 34 is spherical and carries a peg (36) engaging a guide groove in the casing (1).
Patent GB-1318808-A (GB)
Title: Semi-conductor arrangement
IPC: H01L23/495
Filed: 1971-11-04
Abstract: 1318808 Semi-conductor devices SEMIKRON GESELLSCHAFT FUR GLEICHRICHTERBAU UND ELEKTRONIC mbH 4 Nov 1971 [6 Nov 1970] 51254/71 Addition to 1300334 Heading H1K A semi-conductor rectifier arrangement comprises a plurality of conductive members formed from a conductive strip 1, each member including a wafer contact portion 2, 3 and a conductor portion 21, 31, the contact portion of one member being a strip, 2, extending lengthwise of the conductive strip, the contact strip being bent out of the plane of the conductive strip at 22 to overlap the other contact portions 3 in order to hold a semi-conductor wafer therebetween. The wafer may then be soldered to its contacts, the arrangement provided with a housing, and the strip severed, at 10. In a further embodiment, a second smaller contact strip may be included between contact strip 2 and two portions 3, the second strip also being bent at its conductor to overlap another part of the contact portions 3, enabling two wafers to be held at each portion 3 allowing full wave bridge rectifiers to be constructed. Specification 1,300,334 is referred to.
Patent GB-1077089-A (GB)
Title: 1-substituted-3,4-dihydroisoquinolines
Inventor: GILDERSLEVE DAVID ROY
IPC: C07D217/16
Filed: 1964-12-18
Abstract: Novel compounds of the formula <FORM:1077089/C2/1> wherein R1, R2 and R3 are H or CH3, and X is H, C- 5 alkyl, C- 5 alkoxy or halogen, and the pharmaceutically acceptable acid addition salts thereof are prepared by cyclodehydration of an amide of formula <FORM:1077089/C2/2> wherein R1, R2, R3 and X are as defined, or by reaction of a phenoxyacetonitrile X.C6H4.O. CHR3.CN with a phenethyl chloride or bromide C6H5.CHR1.CHR2.  Halogen, in the presence of SnCl4 as catalyst.  The compounds have anti-viral activity.  N - (p - chlorophenoxyacetyl) - b  - phenyl ethylamine is prepared by reacting p-chlorophenoxyacetyl chloride and b  - phenylethylamine. Pharmaceutical compositions comprise at least one compound of the first formula above, together with a pharmaceutically acceptable carrier.
Patent GB-1410623-A (GB)
Title: Data transmission systems
IPC: H04L27/12
Filed: 1972-11-08
Abstract: 1410623 Digital transmission HONEYWELL INFORMATION SYSTEMS Inc 8 Nov 1972 [9 Dec 1971] 51613/72 Heading H4P An f.s.k. transmitter has one generator, e.g. a crystal oscillator 252 supplying by multiple division a number of fixed pulse frequencies, also a second generator, e.g. a relaxation generator 251 supplying similar pulse frequencies, but effective only to smooth transitions from one fixed frequency to another. The frequencies are selectable by bi-level signals on lines B1-B4. A signal on say B3 primes gating circuit 316 which when it has inputs from counters C-F, e.g. signifying a count of 60, produces a pulse through gating circuit 326, primed by Q = 1 from flip-flop 261, hence triggers one shot circuit 325 causing it to issue a reset pulse on line 334 to counter 290 also to generator 251. Output is also applied to flip-flop 327 which produces square waves of half frequency which are converted to sinusoidal by l.p filter 510 and amplified by 527, and thence passed to line through 540. Pulses from 251 are rendered ineffective by gating circuit 329 being blocked i.e. Q or F/F 261 = 0, and this persists until there is a change on B1-B4. On change to say B2, B3#0 hence change of state through 259, 260 sets F/F 261 enabling circuit 329 by Q = 1 and disabling the remainder of gates by #Q = 0. As the ramp generator cannot change its period instantaneously a pulse is produced on line 449 intermediate of the two selected frequency periods hence providing a smooth transition. On this being passed through 325, F/F 261 is reset through 270, 263 and 262. During fixed frequency operation 251 is slaved to generator 252/290 but is non effective, but during frequency transitions reversely. To avoid generating line transients by abrupt termination of transmission, a soft carrier turn off frequency of 900 c.p.s. for 100 m/sec. is provided and controlled by monostable circuit (244) Fig. 2a (not shown). Establishment of connection may be automatic through a telephone network, with a hand shaking procedure prior to message transmission, the unit developing suitable signalling frequencies controlled by selection circuits 310 resetting circuit 290 at an appropriate count. Asynchronous or synchronous mode of transmission may be employed; the latter may be controlled by a Xtal controlled source. The transmitter may develop a mark frequency of 1200 c.p.s., space 2200 c.p.s., and a signalling frequency of 2025 c.p.s. A soft turn off carrier frequency of 900 c.p.s. for 100 m/sec. may be provided and controlled by a monostable circuit (244), Fig. 2a (not shown).
Patent GB-1132994-A (GB)
Title: Method of controlling the operation of a blast furnace
IPC: C21B5/00
Filed: 1965-12-06
Abstract: 1,132,994. Controlling blast furnace operation. CENTRE NATIONAL DE RECHERCHES METALLURGIQUES. Dec.6, 1965 [Dec.10, 1964], No.51624/65. Heading C7D. In a method of controlling a blast furnace one or more factors characterizing the operation of the shaft are monitored and any irregularity is corrected without there being any immediate effect on the operation of the lower part of the furnace, while at the same time a factor representative of the thermal condition of the lower part of the furnace is continuously calculated and compared with a previously calculated target value, any difference being caused to initiate corrective action. With regard to the shaft the blast rate, humidity, temperature and oxygen content, the top gas composition, and the quantity of fuel injected, may be examined one to four times per minute and in conjunction with the analysis of the charge used to calculate the characteristic factor which may be one of the following; degree of reduction by hydrogen, degree of reduction by carbon monoxide, degree of reduction by carbon, or degree of utilization of carbon monoxide, defined as the ratio of the actual oxidation state to the equilibrium state at 1000‹C. when all the iron is in the form of FeO. For the lower part of the furnace there is calculated a factor which represents the quantity of heat necessary for the reduction of the amount of silicon desired in the iron produced; variation of this factor from a predetermined value is counteracted by modifying the supply of heat, as by varying the amount of fuel injected, the blast temperature, or its oxygen content.
Patent GB-1488323-A (GB)
Title: Carrier traverse control apparatus for a serial printer
IPC: G06K15/08
Filed: 1975-12-17
Abstract: 1488323 Control of printers INTERNATIONAL BUSINESS MACHINES CORP 17 Dec 1975 [23 Dec 1974] 51667/75 Heading G4H Carrier traverse control means for a serial printer comprising a carrier movable along the print line of a document, a type element having a plurality of type characters thereon and movable on the carrier to present selected ones of the characters into position for printing at successive print locations, means to impact the selected character to print on the document, and drive means to move the carrier along the print line, includes means for determining the number of character positions which the type element must move on the carrier to present the next type character for printing, and control means responsive to such number to selectively control the operation of the drive means to cause the carrier to pass the next print position with the next character presented for printing at a predetermined velocity. The velocity can thus be made suitable for on-the-fly printing using a "golf ball" or continuously rotating "daisy wheel" printer (Figs. 1, 9, not shown), and is uniform at each print position to maintain the quality of printing. As described, carriage movement is controlled by a stepping motor which requires twelve advance pulses to move the carrier one column. For a maximum speed of 50 characters per second, a 600 Hz clock is used, pulses therefrom being prevented from reaching the stepping motor as necessary to slow down and speed up carriage movement between character positions in dependence on the time needed to move the type element, so that the carriage is moving at the predetermined velocity when the new character is in position. In the control circuit of Fig. 4, the number of character positions through which the type element must move is determined by circuitry 15, Fig. 8 (not shown), and used to access a ROM 46 via addressing circuitry 26, 32-41. As shown, the type element may be moved through up to twelve positions in one of two directions (to get the shortest route); for each of these numbers, ROM 46 contains 32 storage locations (see Fig. 6) which contain a 1 bit where a pulse to is be applied to the stepping motor (see Fig. 5). With a particular address 000, 032 &c. loaded into an address counter 26, clock pulses T2 sequentially access the appropriate locations until a step counter 20 reaches a count of 12: whenever a location contains a 1 bit, a gate 45 is enabled to apply a stepping pulse to the motor. The circuit of Fig. 4 also incorporates means for starting and stopping the print carrier. Other arrangements of memory 46 are also mentioned.
Patent GB-1348442-A (GB)
Title: Transport system
IPC: B60L5/38
Filed: 1971-11-10
Abstract: 1348442 Electric conductor and collector systems MERLIN GERIN 10 Nov 1971 [16 Nov 1970 (2)] 52140/71 Addition to 1243467 Heading B7L In the electric transport system of the main Specification, each of the slidable contacts supported by the current collector 14 is subdivided into adjacent elementary contact parts 22, 22<SP>1</SP>, 22<SP>11</SP> and 22<SP>111</SP> each of which is individually urged such as by springs 24 against one of the current feed conductors (12, 12<SP>1</SP> or 12<SP>11</SP>), Fig. 2 (not shown) which surround the collector 14 and define its path, so as to maintain electrical contact between the slidable contact and the feed conductor during oscillations of the current collector 14. Abutment means formed by guide shoes 56 and 58, which are urged towards the conductor rail (12<SP>1</SP>) by biasing springs 60 and 62, are held further from the conductor rail (12<SP>1</SP>) than the shoe parts 22 &c. while the collector 14 is central relative to the rails (12, 12<SP>1</SP>, 12<SP>11</SP>) by which it is surrounded, but their surfaces 68 and 70 come into contact with one of the rails when off-centring occurs. Further abutment means 72 and 74 secured to the collector 14 are offset still further from the rails to supply guidance when greater off-centring occurs. The contact shoes may be transversely divided into a plurality of longitudinally spaced apart elementary shoe parts 22, 22<SP>1</SP>, 22<SP>11</SP>, 22<SP>111</SP> as in Fig. 1 and/or longitudinally divided into parts 136 and 138 as in Fig. 3. When the rail 12, Fig. 3, is of generally V-shaped cross-section with a space 126 between the two plane surfaces 122 and 122<SP>1</SP>, the contact shoe may have guidance means formed by a median partition wall 148 extending into the space 126 to prevent excessive lateral movement of the shoe.
Patent GB-1279254-A (GB)
Title: Preparation of olefins
Inventor: ALLEN JOHN KENNETH
IPC: C07C6/04
Filed: 1968-11-06
Abstract: 1279254 Rhenium catalyst BRITISH PETROLEUM CO Ltd 16 Sept 1969 [6 Nov 1968] 52548/68 Heading B1E [Also in Division C5] An olefine disproportionation catalyst comprises 0.1 to 10 parts of rhenium heptoxide and 100 parts of y-alumina derived from boehmite.
Patent GB-1204536-A (GB)
Title: Improvements in or relating to the lubrication of two-stroke internal combustion engines
Inventor: MARCIK MILOS
IPC: F01M3/02
Filed: 1967-11-20
Abstract: 1,204,536. Lubricating. JAWA, NARODNI PODNIK. 20 Nov., 1967 [3 Dec., 1966], No. 52580/67. Heading F2A. [Also in Division F1] In a lubricating system oil is supplied from an oil reservoir by a metering pump to a discharge port opening into the carburetter bore at that edge of the carburetter throttle valve which faces in the direction of flow of fuel and air mixture. In Fig. 1 oil passes from feed pipe 11, through passage 13 to the discharge port at the edge of slide valve 16. The oil is entrained by the fuel air mixture which flows in direction C. In Figs. 2 and 3 (not shown) a flap valve has an oil duct opening into its edge.
Patent GB-1440768-A (GB)
Title: Manufacture of aqueous dispersions of polymers of monoolefinical ly unsaturated carboxylic esters
IPC: C08F18/04
Filed: 1973-11-15
Abstract: 1440768 Aqueous dispersions of ester polymers BASF AG 15 Nov 1973 [16 Nov 1972] 52977/73 Heading C3P An aqueous dispersion of a polymer of a mono-olefinically unsaturated carboxylic ester is prepared by emulsion polymerization of said ester in the presence of (a) 0À05 to 7% of a non-ionic emulsifier (b) 0À05 to 5% of an anionic emulsifier (c) 0À01 to 5% of a protective colloid based on an N-vinyl pyrrolidone polymer and (d) 0À01 to 7% of a hydroxyl containing protective colloid which is a polyvinyl alcohol, a water-soluble partially saponified vinyl acetate polymer or a mixture thereof, said percentages being by weight of the total weight of monomer. The non-ionic emulsifier may be an adduct of 25 moles of ethylene oxide and 1 mole of pisooctyl phenol, C 18  fatty alcohol or a fatty alcohol mixture of C 16 -C 19  alcohols, 50% of which' are saturated, and the anionic emulsifier may be the sodium salt of the sulphuric acid monoester of the adduct of 25 moles of ethylene oxide and 1 mole of p-isooctyl or p-nonyl phenol. Examples describe the production of copolymers of (1) vinyl acetate, vinyl 2-ethylhexanate and crotonic acid, (2) ethyl acrylate, acrylic acid and sodium vinylsulphonate, (3) vinyl acetate, dibutyl maleate, acrylic acid and sodium vinyl sulphonate, (4) styrene, 2-ethylhexyl acrylate, acrylic acid and sodium vinyl sulphonate, (5) vinyl acetate, n-butyl acrylate, acrylic acid and sodium vinyl sulphonate, (6) as (5) plus butanediol-1,4-diacrylate, and (7) vinyl acetate, 2-ethylhexyl acrylate and acrylic acid.