baber/WOPTO huggingface dataset:
Patent GB-1521852-A (GB)
Title: Implantable electromedical lead
IPC: A61M25/00
Filed: 1976-04-07
Abstract: 1521852 Implantable electromedical leads MEDTRONIC INC 7 April 1976 [23 April 1975] 14153/76 Heading A5R An implantable electromedical lead, particularly for use with a heart pacer, is adapted to be inserted through a blood vessel and comprises an electrically conductor 14 with a cover 16 of a material substantially inert to living body tissues and fluids, an electrode 25, 26 at one end of the lead adapted to pierce and be secured in the tissue of an organ of the living body, and a resilient, flexible sleeve 28 arranged wholly at the one end of the lead and surrounding a tip part 26 of the electrode, the sleeve 28 protecting the blood vessel during lead insertion and retracting from the tip 26 when the electrode pierces said tissue. The lead may be unipolar or, as shown, bipolar having helical coil spring platinum-iridium alloy conductors 14, 15 respectively connected to a rigid corkscrew electrode 25, 26 and to a ring electrode 23 of platinum, a platinum alloy, a metal oxide or a carbon compound. The coils of conductors 14, 15 allow insertion of a stiffening stylet 20 having a loop 21 at its proximal end, to effect rotation of the lead, and a bent part at its distal end to facilitate insertion of the lead through the blood vessel. The sleeve 28 is of silicone rubber with accordian pleats so that it collapses and withdraws from the electrode tip 26 or the electrode 25, 26 is screwed into the body tissue.
Patent GB-739886-A (GB)
Title: Improvements in or relating to electric pulse time modulators
Inventor: CATTERMOLE KENNETH WILLIAM
IPC: H03K7/04
Filed: 1954-05-14
Abstract: 739,886. Pulse modulation circuits; transistor saw-tooth circuits. STANDARD TELEPHONES & CABLES, Ltd. May 14, 1954, No. 14182/54. Classes 40 (5) and 40 (6). Amplitudemodulatedpulses are converted to time modulated pulses by applying them to a capacitor together with a saw-tooth wave of the same periodicity, the saw-tooth wave being applied through the capacitor to control a trigger device which generates the time modulated pulse. In the embodiment described, each pulse 22, Fig. 2, from a master pulse generator 1, Fig. 1, applied to the base electrode 6 of a normally blocked transistor 4, causes a negative-going saw-tooth voltage waveform such as 25, 24, 26, Fig. 2, to be developed at the emitter 8, due to the back-coupling between the collector 10 and emitter 8 provided by the. capacitor 18. This waveform is applied to one electrode of a capacitor 28, simultaneously with a positive-going amplitude modulated pulse, such as 34, of greater duration than pulse 22 and derived from a modulator 2, through transformer 3. The capacitor charges to a potential which is the difference between the peaks of the saw-tooth voltage and the modulated pulse, which potential is applied to the emitter 9 of the blocked transistor 5, so that the time t2 at which the emitter potential thereafter reaches the potential 36 of the base 7, along curve 35, is proportional to the modulated pulse amplitude. At time t2 therefore, the transistor 5 becomes unblocked, and the increase in current in collector 11 generates a short differential time-modulated output pulse in the secondary of transformer 29.
Patent GB-880542-A (GB)
Title: Process for treating synthetic fibres
Filed: 1960-04-22
Abstract: In a process for the stripping off or levelling on of optical brighteners on synthetic fibres, e.g. cellulose triacetate, polyurethanes, polyamides, polyvinyl chloride, polyesters and polyacrylonitrile, the equilibrium of an optical brightener between an aqueous liquor with which the synthetic fibres are treated and the synthetic fibres themselves is shifted by the addition of a swelling agent for the synthetic fibres to the aqueous liquor.  The optical brighteners are preferably sparingly water-soluble compounds of the formula <FORM:0880542/IV (c)/1> in which R1 and R2 each represents a benzene ring which is condensed with the hetero ring and may be further substituted, X represents an oxygen atom or a group >N-R3, where R3 is hydrogen or a substituent, e.g. a methyl group, and Z represents a bridge member containing at least one carbon-to-carbon double bond which is in conjugation with the double bonds of the hetero rings, used in the presence of anionactive or non-ionic dispersants.  Specified swelling agents are, for cellulose triacetate fibres, trichlorobenzenes, ortho-phenyl phenol, salicylic acid methyl ester, phthalic acid diethyl ester, terephthalic acid dimethyl ester, citric acid triethyl ester, phosphoric acid tripropyl, tributyl or tri(chloroethyl)ester and isophorone, for polyester fibres, 1 : 2 : 3 : 4-tetrahydronaphthalene, diphenyl, chlorobenzene, orthodichlorobenzene, trichlorobenzenes, ortho- and paraphenylphenyl, benzyl alcohol, phenylmethyl carbinol, phenoxy ethanol, acetophenone, benzoic, salicylic or 5-chlorosalicylic acid, benzoic acid methyl, isobutyl or benzyl ester, salicylic acid methyl ester and terephthalic acid dimethyl ester.  More particularly there may be used, for polyvinyl chloride and polyester fibres, a mixture containing 50% by weight of isophorone, 25% by weight of chlorobenzene and 12.5% by weight each of an adduct of ethylene oxide with castor oil and with paraoctyl phenol, and, for cellulose triacetate, polyvinyl chloride, polyamide, polyester and polyacrylonitrile fibres, a mixture containing 75% by weight of ortho-dichlorobenzene, 20% by weight of partially neutralised naphthalene sulphonic acid and small amounts (together 5% by weight) of ammonia and sodium 2-heptadecyl-N - benzyl - benzimidazole disulphonate.  When brightening fibres, the fibres are preferably treated at 40 DEG C - 80 DEG C and a goods-to-liquor ratio of 1 : 10 to 1 : 50 with an aqueous liquor containing 1 - 10 parts of swelling agent in 1,000 parts by volume of liquor to apply 0.02-0.1% by weight of brightening agent on the fibre.  When stripping a brightener from the fibres, the fibres are preferably treated at 80 DEG C-100 DEG C and a goods-to-liquor ratio of 1 : 10 to 1 : 50 with an aqueous liquor containing 5-50 parts of swelling agent in 1,000 parts by volume of liquor.  The fibres may subsequently be washed at 40 DEG C-80 DEG C or at the boil with a composition containing soap or a synthetic detergent.  Example 6 refers to the stripping of 4-methyl-7-diethyl-amino coumarin from polyamide fibres.
Patent GB-723929-A (GB)
Title: Improvements in or relating to bag or pocket closures
IPC: B65D33/16
Filed: 1952-06-06
Abstract: 723,929. Closing paper and like bags. CORRIGAN, J. S. June 8, 1953 [June 6, 1952], No. 14301/52. Classes 94 (1) and 94 (2). A closure for bags of paper or like material consists of a sheet of cardboard, stout paper, or other stiff material bent into a substantially Z or W shape. The portions 4, 5 of the closure may be of the same or different lengths, and the corners of the sheet may be cut away. In use the closure is fitted over papers 7 or other articles in a bag 10 which engage in the V formed between the edge 8 and fold 3 of the closure, and the ends 11, 12 of the bag are folded inwardly into the space between the portion 5 and the folds 2, 3. An alternative closure is folded into a W shape.
Patent GB-1361777-A (GB)
Title: 3-alkoxy-5-substituted phenylacetic acids
IPC: C07C59/64
Filed: 1973-03-26
Abstract: 1361777 Phenylacetic acids NIPPON SHINYAKU CO Ltd 26 March 1973 [12 April 1972 (2)] 14340/73 Heading C2C Novel therapeutic compounds (I) where R<SP>1</SP> is C 1  to C 6  alkyl, cycloalkyl, thienyl or phenyl optionally substituted by halogen, C 1  to C 6  alkyl and/or C 1  to C 6  alkoxy and R<SP>2</SP> is C 1  to C 6  alkyl, are made by standard methods.
Patent GB-143872-A (GB)
Title: Manufacture of calcium carbide
IPC: C01B32/942
Filed: 1920-05-26
Abstract: A mixture of lime with bituminous coal, containing about 30 to 36 per cent of volatile matter is crushed to about one-eighth-inch mesh and mixed together and coked in an ordinary coking oven with recovery of by-products.  The coked mass is broken into pieces about the size of a fist or larger, and fed to the carbide furnace, preferably while still hot.  If the coal is very high in volatile matter, some fixed carbon such as anthracite may be added, while if it is low in volatile matter a binder, preferably bituminous, may be added. Reference has been directed by the Comptroller to Specification 14486/15.
Patent GB-770156-A (GB)
Title: Manufacture of organo-silicon compounds
IPC: C08G77/00
Filed: 1952-06-06
Abstract: Organosilicon lacquer resins are made by reacting a silane of the general formula RnHmSiX4-(n + m), where n and m are each 1 or 2, m + n is equal to 2 or 3, R is a hydrocarbon radical and each X is an alkoxy or aryloxy radical, alone or in admixture with other organosilanes, with a monohydric or polyhydric alcohol or phenol or an incompletely esterified or etherified polyhydric alcohol or phenol or a mixture of such compounds.  The reaction may be accelerated by the use of a catalyst, such as caustic soda, alcoholates, phenolates, zinc chloride, aluminium chloride or aluminium acetyl-acetonate, and by the application of heat, and may be effected in the presence of a solvent, e.g. xylene and butyl ether.  Modified resins may be obtained by reaction at any desired stage with an aliphatic or aromatic polybasic acid, e.g. maleic acid and phthalic acid and anhydride, or an organic oxyacid or mixture thereof, thus the organic acid may be reacted with a polyhydric alcohol to give a product containing at least one hydroxyl group which may then be reacted with the silane.  Further modification may be effected by reaction at any desired stage with trimethylbutoxy silane or trimethylsilanol. Substances customarily used in making lacquers, e.g. fatty oils, resin acids, fatty acids containing more than 12 carbon atoms, natural and synthetic resins, driers, softeners, hardening agents and stabilizers, may also be added at any desired stage.  In examples: (1) the reaction product of phthalic anhydride, glycerine and oleic acid is reacted with methyl diethoxysilane; (2) methyl diethoxysilane is reacted with pentaerythrite and the product is then reacted with triethoxylsilane and oleic acid and finally with further pentaerythrite and phthalic anhydride; (3) the reaction product of pentaerythrite, phenylmethylethoxysilane and oleic acid is reacted with glycerine and then with phthalic anhydride; (4) the reaction product of cetyl alcohol, glycerine and methyldibutoxysilane is reacted with phthalic anhydride; (5) the reaction product of phenol, glycerine and methyldibutoxy silane is heated with phthalic anhydride.
Patent GB-624147-A (GB)
Title: Photographic contact printing machine
IPC: G03B27/22
Filed: 1947-05-30
Abstract: 624,147. Photographic contact printing machines. OSTERBERG, I. A. May 30, 1947, No. 14401. [Class 98 (ii)] A machine with an arched glass plate over which drawings to be printed are transported by a conveyer belt resting against the arched plate is characterised by use of a belt composed of a layer of rubber or synthetic rubber and a layer of felt, the felt layer being placed against the glass plate. The belt may have rubber and felt layers each a sixteenth of an inch thick and joined together by a flexible adhesive. The belt combines the advantages of previously used felt belts and rubber belts. Canvascovered rubber belts are also mentioned.
Patent GB-211769-A (GB)
Title: A handle for powder puffs
IPC: A45D33/36
Filed: 1923-06-01
Abstract: 211,769. Delatour, A. L. June 1, 1923. Powder - puffs. - A handle, for powder-puffs comprises a stem 1 with a head 2, on which stem are threaded a bead 3, a conical sleeve 4,. and washers 5 and 6. One end of the sleeve 4 seats in a depression in the washer 5, while the flared end forms a seating for the bead 3. The base 7 of the puff is clamped between the washers 5 and 6, and the pointed end 8 of the pin is bent over or otherwise manipulated to hold the components in place. Components other than the sleeve and washers may be used to form the handle, and the end of the pin may be flattened, or split and bent over, or a bifurcated pin may be used.
Patent GB-762142-A (GB)
Title: Monocrystalline strontium titanate
Inventor: MERKER LEON
IPC: C30B29/26
Filed: 1954-05-18
Abstract: Monocrystalline strontium titanate in the form of a boule having a colour ranging from water white to blue black is prepared by introducing into an oxygen/hydrogen flame a powdered composition consisting of strontium titanate and up to 3 per cent calculated as metal oxide, of an oxidic compound of molybdenum, tungsten, uranium, niobium, tantalum, iron, vanadium, chromium, manganese, nickel or cobalt or mixtures thereof, the flame being at a temperature between 2080 and 2150 DEG C., and crystallizing the melted material in the form of a boule, which may subsequently be subjected to a heat treatment in an oxidizing atmosphere at 650 to 1700 DEG C. to modify the colour.  The oxides of chromium and vanadium may constitute as little as 0.001 per cent whilst effective amounts of the other oxides ranges from 0.005 per cent. The strontium titanate starting material should have a particle size from 0.1 to 3 microns and may conveniently be prepared by reacting titanium oxalate with strontium chloride to precipitate strontium titanium oxalate which after washing is heated to 500 DEG C. to form strontium titanate.  The oxide addition may be effected to the strontium titanate by dry mixing or alternatively the addition agent may be added as a powder, slurry or solution to the strontium titanium oxalate prior to conversion to titanate.  The mono-crystal obtained has an index of refraction of about 2.4 and a reciprocal dispersion of about 13 and is suitable for the production of lenses with high magnifying power and short focal length or for artificial gems.  Specification 664,889 is referred to.
Patent GB-932256-A (GB)
Title: Diuretic compositions
IPC: C07D/
Filed: 1960-04-26
Abstract: 2,4,7- Triamino- 6-phenylpteridines of formula <FORM:0932256/IV(a)/1> wherein R is hydrogen, 1 to 3C alkyl, 1 to 3C alkoxy or halogen, are produced by reacting 5-nitroso-2,4,6-triaminopyrimidine with the appropriate phenylacetonitrile in an organic solvent in the presence of sodium or an anhydrous sodium alkoxide such as sodium methoxide, 2,4-diaminopteridines of formula <FORM:0932256/IV(a)/2> in which R1 and R2 are hydrogen, methyl or ethyl, are produced by reacting 2,4,5,6-tetraaminopyrimidine, or a salt thereof, with a 1,2-dicarbonyl compound such as glyoxal, biacetyl or a dione such as pentanedione or hexanedione.  Examples illustrate the preparation of 2,4,7-triamino-6-phenylpteridine; 2,4,7-triamino-6-o-methylpteridine; 2,4,7-triamino-6-p - chlorophenylpteridine; 2,4-diamino-6-7-di-methylpteridine; 2,4-diaminopteridine; 2,4-diamino-6-methylpteridine and 2,4-diamino-7-ethyl-6-methylpteridine.ALSO:Diuretic and anti-hypertensive medicines for oral or parenteral use in the treatment of humans and animals comprise a carrier and either a compound having the formula <FORM:0932256/VI/1> in which R is hydrogen, 1 to 3C alkyl, 1 to 3C alkoxy or halogen; or a compound of formula <FORM:0932256/VI/2> in which R1 and R2 are hydrogen, methyl or ethyl.  The preparations are used orally in the form of tablets, capsules, lozenges, powders, suspensions in a vegetable oil or water and in the case of tablets time delay materials such as glyceryl mono- or di-stearate alone or with a wax may be present.  The compositions may be added to animal feeds.  Optional additions are (a) vitamins and (b) diuretics such as chlorothiazide, hydrochlorothiazide and acetazolamide.
Patent GB-547385-A (GB)
Title: Improvements in or relating to tobacco pipes
IPC: A24F5/08
Filed: 1941-11-14
Abstract: 547,385. Tobacco pipes. SAUNDERSON, H. J. Nov. 74, 1941, No. 14675. [Class 130] A tobacco holder comprises two arms a, b pressed against the interior of a pipe bowl by a spring c and the tobacco rests on an expansible platform formed by projections or bends d, e from opposite points of the arms. As shown, the holder is formed of wire, the bends d, e being interlinked and the arms a, b being connected by an integral spring coil c. The upper ends h of the arms a, b are looped to engage the rim of the bowl. In a modification, the arms a, b terminate immediately above the bends d, e, and a tool for removing the holder consists of a flat bar with a pointed end and notches to engage the bends d, e.
Patent GB-1025227-A (GB)
Title: Motor vehicle suspension
Inventor: PRICE-STEPHENS DOUGLAS
IPC: B60G3/22
Filed: 1963-04-16
Abstract: 1,025,227. Vehicle suspension. FORD MOTOR CO. Ltd. March 16, 1964 [April 16,1963], No. 14724/63. Heading B7D. A motor vehicle suspension comprises a fixed length shaft which may be a drive-shaft 1, or a non-driven shaft, having universal joints 17 and 11; a wheel supporting member 3 to which the wheel mounting is attached and which is connected to the vehicle body by a resilient bush 19 and a shackle 5 having upper and lower resilient bushed pivots, and a coil spring-hydraulic damper unit 37. Instead of the shackle 5, a joint permitting horizontal movement may be employed. The pivot axis A of the member 3 does not intersect the joint 17. In a modification, the supporting arm 3 may comprise two separate arms welded together, and connected to the vehicle by a link suspended from a pin attached to the differential gear casing and by a pin and a pair of resilient conical bushings respectively. The latter pivot-pin may be inclined to the longitudinal vehicle axis. In this embodiment, a coil spring is connected to the member 3, Fig. 5, and the vibration damper 41 is connected to a bracket 73 extending rearwardly from the support member.
Patent GB-1009866-A (GB)
Title: Xerographic machine and method
IPC: G03G15/08
Filed: 1962-05-01
Abstract: 1, 009, 866. Electrophotographic processes. RANK-XEROX Ltd. May 1, 1962 [May 1, 1961], No. 14769/62. Heading G2H. An electrostatic latent image, on a xerographic plate 12 in the form of an endless band, is developed by directing, granular toner along an inclined portion of the belt with a velocity that remains substantially constant throughout its travel along that portion. The inclination of the belt is adjustable so to be slightly greater than the angle (angle of repose) to which the plate can be inclined before the developer used starts to flow down the belt under the influence of gravity. Examples are given of the angle of repose for toned and untoned beads with various carriers. The plate 12 comprises a band of conductive material 8, e.g., aluminium, brass or steel or a metallized plastic web such as polyethylene terephthalate, the web having a coating 7 of photo-conductive insulating material. The endless band is driven by a motor 13 under the control of a timer 9, such that the lower run of the band is fed into the position previously occupied by the upper run. A full frame corona discharge device 14 comprising a grid of fine wires uniformly charges the adjacent area of layer 7. An image of an original, such as a book 18, is projected by mirrors 21, 23 and lens 22 through the grid after charging. A hopper 28 has a gate 30 which controls the supply of toner to a shoot 31 having curved section 32. A conveyer 34 returns toner from hopper 33 to hopper 28. The developed electrostatic image on the layer 7 is transferred to a web 25 of paper by a corona discharge device 26. A brush 27 removes residual toner before recharging the layer 7. Specification 1,009,867 is referred to.
Patent GB-147763-A (GB)
Abstract: 147,763. Grimme, Natalis, & Co. March 8, 1917, [Convention date]. Adding and subtracting apparatus; keyboards.-Relates to key-set, independently-operated, multiple-bank machines of the kind in which a number of guiding members 10 are displaced in a direction parallel to the axis of rotation of the operating means, by levers 7 connected by links 3 to key-operated levers 2. The invention consists in the provision of a longitudinally moving bar 5 having a differential movement corresponding to the key depressed and provided with a bent cam slot 4, Fig. 5, engaging the levers 2 and serving to rock as many of them, and thus also of the parts 7, 10, as represent the value of the depressed key. The bar 5 is connected to an angle bar 6 which is drawn by a spring in the direction of the arrow 8, being held in the inactive position by stops 9, 11 carried respectively by the bar 6 and a spring-controlled locking-plate 13. Depression of a key lowers the plate 13, thus releasing the bar 6 which moves under the control of its springs until arrested by the engagement of differentially spaced projections 12 with lateral stops 14, Fig. 3, carried by the keys. Notches 15 in the bar 6 are provided to afford a passage for the stope 14 and movement of the bar locks the remaining keys in the undepressed condition. Return movement of the bar 6 may be effected in any known manner.
Patent GB-299686-A (GB)
Title: Improvements in the framework of endless belt conveyors and means for supporting same
IPC: B65G39/00
Filed: 1927-07-01
Abstract: 299,686. Bousfield, G. W., and Davenport, C. July 1, 1927. Divided on 296,845. Casings, sectional framework, and feet for endless-belt conveyers.-In an endless belt conveyer for transporting coal along the working face in mines or in the gates or roads leading thereto, the side frames c, c<1> form a continuous shield totally enclosing at each side the space between the top and bottom belt. The side frames are made in sections and are attached to rectangular supporting members c. c', the feet of which take into slots f, f<1> in curved topped stools g, g<1>. The return run of the belt is supported by the stools.
Patent GB-593773-A (GB)
Title: Improvements in or relating to the inhibition of rancidity in soap products in smallparticle form containing rosin soap
IPC: C11D9/30
Filed: 1945-06-12
Abstract: Soap containing a proportion of a rosin soap and in finely divided form contains also a small amount of a stabilizing compound selected from the group consisting of polyethylene polyamines of the formula H2N.C2H4.(HN.C2H4)x.NH2, "x" being a whole number, and mineral acid salts thereof.  Spray dried and flake soap products are specified. Polyamines of "x" values of 1 to 3 are preferred viz. diethylene triamine, triethylene tetramine and tetraethylene pentamine, as well as commercial mixtures of these.  The mineral acid salts of the polyamines may comprise the sulphates, chlorides and phosphates thereof. Specifications 291,041, [Class 91], and 562,856 are referred to.
Patent GB-874501-A (GB)
Title: Improvements in or relating to gear hubs for pedal cycles
IPC: B62M11/14
Filed: 1958-05-09
Abstract: 874,501. Variable - speed gear ; ratchet clutches. FICHTEL & SACHS A.G. May 9, 1958 [July 4, 1957], No. 14932/58. Class 80 (2). A change-speed planetary gear hub for bicycles comprises a driving sprocket 2 fast with a slotted sleeve 3 carrying an axially movable ratio selecting ring 4 which, in the position shown, is in positive engagement with a planet carrier 7 supporting planet pinions 5 meshing a fixed sun gear 19 and a ring gear 8, a step-up ratio thereby being imparted to the ring gear upon which is axially slidable a ratchet clutch ring 9 carrying pawls 10 engaging teeth 13 in a driven hub 1. To obtain a step-down ratio the selecting ring 4 is slidden rightwards to engage positively with the ratchet clutch ring 9, further rightward movement of the selecting ring then sliding the ratchet clutch ring rightwards against the bias of a spring 14 so that the pawls 10 are forced radially inwards as they slide over the bevelled edge 11 of a ring 12 to disengage them from the hub teeth 13, the planet carrier 7 now being driven at a reduced speed and transmitting drive through a ratchet 16 to the teeth 13 and the driven hub 1. In a modification, Fig. 5 (not shown), the ring 12 is dispensed with and instead an oblique face is formed at the ends of the hub teeth 13 over which the pawls 10 slide when the ratchet clutch ring 9 moves leftwards to the step-up ratio position.