baber/WOPTO huggingface dataset:
Patent GB-850819-A (GB)
Title: Production of pure silicon
IPC: C01B33/037
Filed: 1957-01-15
Abstract: 99.5% or more pure silicon is prepared by pulverizing crude, e.g. 96-98%, silicon, applying dilute hydrochloric or sulphuric acids, or a mixture thereof in finely dispersed form to the pulverized silicon with vigorous agitation until a paste of dough-like consistency is formed, subjecting the paste to heap-leaching by leaving it to stand in heaps without disturbance for at least one day, and isolating the pure silicon by washing and drying.  The acid may be added intermittently or continuously as a fine spray, while stirring and/or turning over the crude silicon, in an open container, centrifuge, or autoclave.  The paste may be formed with 30-70% acid, and the heap-leaching is effected, preferably for 3 days, in the same vessel as the dilute acid treatment by stopping agitation.  Immediately after paste formation, the paste may be mixed with hydrofluoric acid with continuous agitation before heap-leaching.  As alternatives, 80% of the dilute acid may be applied as fine spray and the remaining 20% added rapidly with continuous agitation, or the dilute and hydrofluiric acids may be applied simultaneously in admixture. The acid treatment and heapleaching may be repeated one or more times. The resulting silicon is washed, separated from the acid liquor, and dried at 70-80 DEG C.  Silicon containing carbide may be decarburized before treatment by heating in the absence of air with metals or metal compounds which combine with carbon.
Patent GB-503647-A (GB)
Title: Improvements in grinding discs for disc mills
IPC: B02C7/12
Filed: 1938-01-17
Abstract: 503,647. Disc mills. WROCLAWSKI, J., and PANSTWOWA WYTWORNIA PROCHU. Jan. 17, 1938, No. 1540. [Class 59] A grinding disc for a combined disc mill and pump comprising zigzag shaped knives disposed radially thereon has the zigzag shaped knives formed by a number-of straight knives detachably secured to the disc. As shown the zigzag knives are formed from blades 4 recessed at the sides to enter correspondingly shaped grooves formed in the disc 1. The knives'are of the same shape and the inclination in different rows may be varied.
Patent GB-1034433-A (GB)
Title: Bactericidal, viricidal, anti-parasitic and cytotoxic compositions and their preparation
IPC: C02F1/50
Filed: 1963-01-14
Abstract: Water is sterilized by adding to it, in the presence of molecular oxygen either separately or in admixture an enediol in which the two hydroxyl groups are bonded to the carbon atoms of the double bond and a metal compound producing ions of a metal of the first transition series including copper or tin in aqueous media and, optionally a chelating agent for the metal ion. Specified enediols are ascorbic acid or a water-soluble salt thereof, dihydroxy maleic acid and the reductones. Specified chelating agents are ethylene diamine tetra-acetic acid, cyclohexane diamine tetra-acetic acid, cystine, histidine, penicillamine and polyphosphates.  The materials may be added as solutions, tablets, granules or powders.ALSO:A cytotoxic composition comprising the iron chelate of sodium ethylene diamine tetra-acetate and sodium ascorbate.  The composition may be administered by parenteral injection as an aqueous solution to mice.
Patent GB-1259673-A (GB)
Title: Substituted cyclopentanones
IPC: A61K31/215
Filed: 1969-01-10
Abstract: 1,259,673. Substituted cyclopentanones. AMERICAN HOME PRODUCTS CORP. 10 Jan., 1969 [1 Feb., 1968; 4 Oct., 1968], No. 1601/69. Heading C2C. Processes for the production of substituted cyclopentanones of the formula wherein R<SP>1</SP> and R<SP>2</SP> are C 1-20  alkyl radicals optionally mono substituted with carboxy, C 1-6  alkoxycarbonyl, hydroxy, tetrahydropyranyloxy or C 1-7  acyloxy and the symbol (#) indicates that the compounds can have these substituents in the α- or #-configuration, by reacting the corresponding 4-R<SP>2</SP>-5-R<SP>1</SP>-2,3-epoxycyclopentanones with hydrogen in the presence of a catalyst, and by reacting 2,3-disubstituted levulinaldehydes of the formula with organic nitrogenous bases, and the novel compounds of the above Formula I in which R<SP>1</SP> and R<SP>2</SP> are methyl, or R<SP>1</SP> is 6-carboxyhexyl or 6-(C 1-6  alkoxycarbonyl)hexyl and R<SP>2</SP> is 3- tetrahydropyran - 2<SP>1 </SP>- yloxyoctyl or 3 - (C 1-20  acyloxy)octyl. Pharmaceutical compositions, having hypotensive and smooth muscle stimulating activity, contain the above novel compounds of Formula I and pharmacologically acceptable carriers. Reference has been directed by the Comptroller to Specification 1,186,505.
Patent GB-826097-A (GB)
Title: Process for producing úý-glutamic acid by fermentation
Inventor: TANAKA MASATAMI
IPC: C12P13/14
Filed: 1958-01-16
Abstract: L-Glutamic acid is prepared by fermenting with Bacillus circulans or Bacillus megatherium a culture medium comprising a source of nitrogen (e.g. ammonium salts, urea, casein enzymatic-hydrolysate, bran solubles, peptone and yeast extract), a source of sugar and mineral salts, under aerobic conditions at a temperature of from 27 DEG  to 33 DEG  C., a pH value of from 5.0 to 7.5 and a Kd value (i.e. rate of absorption of oxygen in gram molecules per minute per ml. of culture medium) of from 1.0 to 5.0 X 10-6.
Patent GB-1260584-A (GB)
Title: Detergent compatible softening compositions for fabrics
IPC: D06M13/388
Filed: 1969-01-10
Abstract: 1,260,584. Softening fabrics. ARMOUR INDUSTRIAL CHEMICAL CO. 10 Jan., 1969 [11 Jan., 1968], No. 1635/69. Heading D1P. [Also in Division C5] Fabrics, e.g. terry cloth, are softened during laundering by adding to the wash water or rinse water 0.01-0.5% by weight based on the fabric being washed of a softener composition comprising a quaternary ammonium compound having the formula: in which R is an alkyl group containing 8-24 carbon atoms or an aralkyl group, R 1  is an alkyl group containing 1-4 carbon atoms, an aryl group or a group -(CH 2 CH 2 O) m H in which m is an integer of at least 1 and X is an anion, or a quaternized imidazoline or quaternized amido amine compound, and a tertiary amine oxide having the formula: in which R 2  is an alkyl group containing 8-24 carbon atoms and R 3  is an alkyl group containing 1-4 carbon atoms or a group -(CH 2 CH 2 O) n H in which n is an integer of 1-6, the weight ratio of tertiary amine oxide to quaternary ammonium compound, quaternized imidazoline or quaternized amido amine being from 1:1 to 1:5. X may be a halide, acetate, phosphate, nitrate, sulphate, methyl sulphate or ethyl sulphate ion. Suitable quaternized compounds are distearylmethyltriethoxyethanol ammonium methyl sulphate, dimethyldihydrogenated tallow ammonium chloride, distearyl ethanol alkyl benzyl ammonium chlorides and diphenyl-stearyl dimethyl ammonium chloride. The treatment medium may also contain rewet agents, dyes and perfumes and the detergent used may be anionic.
Patent GB-548140-A (GB)
Title: Glue applying device in glueing machines
IPC: B27G11/00
Filed: 1941-02-07
Abstract: 548,140. Glueing machines. MULLER & CIE., MASCHINENFABRIK UND EISENGIESSEREI AKT.-GES., A. Feb. 7, 1941, No. 1683. Convention date, April 18, 1940. [Class 95] A machine for glueing the edges of wooden strips comprises a feed table 41, and a vertically movable glue-applying member 2. When the work is pressed laterally against the plate 42, the mercury switch 30 is tilted, the armature 27 is attracted by the energized magnet 28, the lever 23 and pawl 20 are actuated, the cam 17 is rotated, and the member 2 is raised from the glue tank 3 into operative position above the work table, so that glue may be applied to the edge of the workpiece. When the point c of the cam 17 has passed the roller 15, the member 2 is lowered, and when the work has been moved out of contact with the plate 42, the cam 17 comes to rest, until another workpiece is pushed against the plate 42.
Patent GB-595827-A (GB)
Title: Improvements relating to the production of motor or aviation fuels
IPC: C10G53/02
Filed: 1941-02-07
Abstract: Motor or aviation fuel is obtained from the C4 fractions obtained from oil distillation and stabilization or cracking by first forming a product consisting of diisobutylene and triisobutylene by submitting the fractions to the cold acid polymerization process described in Specification 472,463 in which the material is contacted with cold sulphuric acid and the acid extract is polymerized by heat and forming a second product by treating the unreacted hydrocarbons to isomerize normal butene to isobutene and polymerizing the product, and subjecting the mixture of the first and second products to hydrogenation and fractionation to yield isooctane and isododecanes. A portion of the unreacted hydrocarbons leaving the second polymerizing stage is recycled to the isomerization stage to convert butylene to isobutylene and the butane and isobutane are dehydrogenated to butylene and isobutylene.  Specifications 470,081, [Group III], and 556,577 also are referred to.
Patent GB-1015622-A (GB)
Title: Process for the manufacture of ª‡,ª‡-ethylene ketones and new ª‡,ª‡-ethylene ketones
IPC: C07C49/443
Filed: 1964-01-14
Abstract: The invention comprises spiro-[2,5]-octan-4-one, 2,2-ethylene-5a -androstan - 17b  - ol - 3 - one, 16,16 - ethylene - D 5 - androsten - 3b  - ol - 17 - one, 21,21 - ethylene - D 5 - pregnen - 3b  - ol - 20 - one, 21,21 - ethylene - D 4 - pregnene - 3,201 - dione, 21,21 - ethylene - D 5 - pregnene - 3b ,17a  - diol - 20-one and a process for the manufacture of a ,a -ethylene ketones of the formula <FORM:1015622/C2/1> in which R represents a phenyl or steroid nucleus and R1 is hydrogen, or R and R1 together with C1 and C2 represent a cyclohexane or steroid nucleus, wherein a g -keto-tetra-alkyl-ammonium salt of the general formula R.CO.-CHR1.CH2N(CH3)3X, in which R and R1 have the above significance and X is the anion of an acid, is reacted with dimethyl sulphonium methylide of the formula <FORM:1015622/C2/2> in the presence of a base, preferably sodium hydride in a suitable solvent, preferably dimethyl sulphoxide.
Patent GB-969148-A (GB)
Title: Separation of boric acid from organic liquids
IPC: C01B35/10
Filed: 1963-01-15
Abstract: Boric acid is separated from mixtures with organic liquids by centrifuging with at least sufficient water to saturate the organic liquid. A separate aqueous phase may be formed and it may be saturated with boric acid.  The organic liquids may contain at least 1% by weight of a water-immiscible alcohol having a solubility of less than 20 g. per 100 ml. H2O at 20 DEG  C.  The alcohol may be an aliphatic, cyclic paraffinic, or cyclic olefinic alcohol, or an alkyl substituted derivative thereof, containing at least 4 carbon atoms per molecule.  Mixtures of the above alcohols or mixtures containing other water-immiscible compounds, e.g. hydrocarbons, ketones, and aldehydes, may be used.  The process may be used to separate boric acid, formed by hydrolysis of a borate ester, from an organic liquid phase.  Examples compare drainage rates of organic liquid mixtures containing boric acid using varied amounts of water.
Patent GB-939301-A (GB)
Title: Improvements in disc brakes
Inventor: BUTLER HENRY JAMES
IPC: F16D55/224
Filed: 1959-01-17
Abstract: 939,301. Disc brakes. DUNLOP RUBBER CO. Ltd. Jan. 8, 1960 [Jan. 17, 1959], No. 1789/59. Class 103 (1). A disc brake comprises a rotatable disc 1, a non-rotatable base member encircling the disc on a chord thereof, a pair of opposed pressureplates 6, situated on opposite sides of the disc and mounted on the base member 2 for pivotal movement about axes extending parallel to the braking surfaces of the disc, friction pads 16 being mounted on the pressure-plates 6 and means for moving the pressure-plates about their pivots 5 to bring the pads 16 into frictional engagement with the disc 1. A piston-andcylinder assembly 21, 23 is mounted respectively on one of the pressure plates and arranged to move apart on admission of fluid pressure to the cylinder thereby to move the pressure plates to the braking position. Figs. 1 and 2 show an arrangement of the brake for the front wheels of a motor vehicle. Fig. 4 shows an alternative embodiment suitable for the rear wheels of the vehicle but provided with alternative mechanical applying means 29, 30 for brake actuation. This latter embodiment also shows a different arrangement for the fluid pressure cylinder, the latter being mounted on lever arms 29, the piston acting through thrust-rod 34 to engage a pressure plate 6 on one side of the disc, the movement of the cylinder and lever arms 29 actuating the other pressure-plate 6 by means of interconnecting actuating-rod 19 which may be adjustable manually or automatically to compensate for brake pad wear. The brake pads 16 are housed in recesses 14 in the pressure-plates 6 so that the pads 15 are free to rotate in the recesses 14 to align their braking faces with those of the disc but are prevented from sideways movement by lips 15 on the pressureplates. Reference has been directed by the Comptroller to Specification 665,273.
Patent GB-669546-A (GB)
Title: An improved method of, and the apparatus for, drying grass and like fibrous materials
IPC: F26B17/12
Filed: 1948-01-21
Abstract: 669,546. Drying grass &c. STEWART, R. B. Jan. 19, 1949 [Jan. 21, 1948], No. 1853/48. Class 34(ii): In a method of drying grass-and other fibrous materials of the type which shrink during drying, the material is fed con-. tinuously or in continued steps to the top of a vertical chamber 4 so that the latter is kept filled to a predetermined level, the material passing down the chamber under gravity and being discharged at the bottom, and drying gas is passed horizontally through the material-at uniform pressure, the height of the predetermined level above the lowest level of passage of drying gas through the material being so chosen for a given material that the material has a compression, due to the weight of the material above it, in relation to its moisture content that causes equal resistance to the passage of the drying gas at all levels. The material is fed by a conveyer 5 to the chamber 4 which has perforated opposing walls 6, 6a whose lines of intersection with the horizontal are parallel. Baffling 14 forms three air chambers A, B, C of which B and C are connected by adjustable apertures 15, chamber A being supplied by fan 10a and chamber B and C being supplied by fan 10b with air heated by passage over oil burner flues 13a, 13b. Material carried on the conveyer is pre-heated and partly dried by hot air from chambers A and B which passes through the perforated belt 8 of the conveyer 5. Air from chamber C flows horizontally through the chamber 4 to complete the drying, the material being discharged at 7. The chamber 4 may be tapered initially or one or both of the walls 6, 6a may be pivoted to allow the chamber to be tapered at will.
Patent GB-438304-A (GB)
Title: Improvements in and relating to shaking conveyors
IPC: B65G27/00
Filed: 1935-01-19
Abstract: 438,304. Jigging - conveyers. EICKHOFF, A., (trading as EICKHOFF MASCHINENFABRIK UND EISENGIESSEREI, GEB.), 176, Hunscheidtstrasse, Bochum, Germany. Jan. 19, 1935, No. 1871. Convention date, Jan. 20, 1934. [Class 78 (i)] In shaking - conveyers having a stationary driving mechanism which imparts a uniform acceleration to the conveyer in one direction, followed by a sudden retardation and a quick reverse with a gradual slow down to its original position, the mechanism consists of linkage elements 6, 3 hinged respectively to the driving mechanism 19 and to the conveyer 1. Interposed between the elements 6, 3 are two similar and approximately equal springs 4, 5 each bearing at one end against the element 6 and at the other end against the element 3. The element 3 may take the form of a cylinder hinged at 2 to the conveyer 1, the element 6 being a rod with a piston 7 working in the cylinder 3. A cover 9 can be adjusted in the cylinder to bring the initial compression of the springs 4, 5, when at rest, to a suitable degree. With high initial load both springs remain elastic and with low initial load each spring is soon relieved from stress after the other takes up the stress. The driving mechanism shown consists of a crank 19 oscillated by a pitman 15 pivoted to an arm on a rotating shaft 14.
Patent GB-471179-A (GB)
Title: Improvements in or relating to rubber soled boots and shoes
IPC: A43B13/12
Filed: 1936-01-21
Abstract: 471,179. Rubber-soled footwear. CHADWICK, A. Jan. 21, 1936, No. 1880. [Class 17 (ii)] The tread surface has a plurality of relatively narrow cuts or slits, either straight and arranged in at least two directions, or curved. Some of the cuts are transverse to the principal direction of surface thrust The slits may be inclined to the plane of the tread surface, and may be formed by moulding. Reference has been directed by the Comptroller to Specifications 14304/11, [Class 17 (ii)], and 428,137 (as open to inspection under Sect. 91 of the Acts).
Patent GB-1532503-A (GB)
Title: Solenoid control system
IPC: H03K17/00
Filed: 1976-01-19
Abstract: 1532503 Semiconductor circuit for driving solenoids BURROUGHS CORP 19 Jan 1976 [18 Feb 1975] 01931/76 Heading H3T A solenoid control system comprising means 21 to selectively energize or de-energize the solenoid coil, a sampler R s  of the solenoid coil current connected to a comparator 67 which is arranged to generate an output signal when the sensed current indicates the solenoid has seated, a cusp (Fig. 5H, not shown) occurring at this instant. The output signal is applied to logic control circuitry 25 which responds to an input control signal to energize the solenoid and to the output signal to de-energize the solenoid. The comparator has hysteresis feedback applied C 3 , R 3  to reduce the effect of noise and to prevent oscillation. At each input of the comparator 67 an RC network R 1 , C, and R 2 , C 2  is connected, their time constants differ thereby aiding detection of the cusp. The capacitor C2 might be eliminated under certain unspecified conditions.
Patent GB-1381951-A (GB)
Title: Pipe coupling particularly for breathing tubes of for example anaesthetic administering apparatus
IPC: F16L19/03
Filed: 1972-01-17
Abstract: 1381951 Pipe couplings J O HOUNSELL 12 Dec 1972 [17 Jan 1972] 2125/72 Heading F2G In a tapered joint between plastics tubes, e.g. breathing tubes in anaesthetic apparatus sealed with a ring 4, a bayonet type or screw-threaded locking collar 3, holds the tubes together.
Patent GB-466149-A (GB)
Title: Improvements in telephone systems
IPC: H04M11/04
Filed: 1936-01-23
Abstract: 466,149. Automatic exchange systems. GENERAL ELECTRIC CO., Ltd., and KAHL, A. R. Jan. 23, 1936, No. 2137. [Class 40 (iv)] If a special service call made by dialling a single digit is not answered within a predetermined time or if the subscriber dials a second digit within that time an urgent alarm is given and the call is transferred to a special emergency jack. On the arrival of a call at the circuit shown, A. B, TA pull-up and the switch U common to a number of circuits is advanced slowly by the interrupter K. If the call is answered at the normal jack A,T, the sleeve relay S puts out the calling lamp, cuts off ringing tone, releases TA to stop switch U and disconnects the individual switch D. If however the subscriber dials before the call has been answered, switch D is advanced to energize TO which locks up, puts out the normal calling lamp, connects the incoming circuit to a special urgent jack UJ and operates visible and audible signals UL, UB. When the call is answered over the urgent jack, SA cuts off the alarms and the ringing tone and releases TA. If the subscriber merely waits, switch U first enables TM to operate and lock over a low resistance winding of TA and in due course energizes TO to transfer the call to the urgent jack. Simultaneous urgent calls could be made in known manner to appear at different jacks or at the same jack in succession.
Patent GB-1138192-A (GB)
Title: Improvements in and relating to pyrotechnic devices
Inventor: MURRAY DUDLEY CHARLES
IPC: F42B4/06
Filed: 1965-01-18
Abstract: 1,138,192. Pyrotechnic devices. PAINSWESSEX Ltd. 18 Jan., 1966 [18 Jan., 1965], No. 2138/65. Heading F3A. A rocket motor or other pyrotechnic device comprises a casing 1 made of aluminium and an end closure 2 in which is a nozzle opening 3, the closure 2 being grooved at 4 to house material 5 for igniting the charge 11 housed in the chamber 1. The material 5 may be a mixture of magnesium and potassium nitrate and a superposed layer of gunpowder pressed into the groove after coating the latter with shellac. Closure 2 has a flange 8 secured by bolts to a flange 7 of the casing 1. A length of quickmatch 10 extends from material 5 through the nozzle 3 and a layer 13 of primed cambric covers the quick-match and material 5. The charge 11, which is spaced from the wall 2 is provided with a coaxial recess 12 of star-shaped crosssection. Instead of the flanged wall 2, a tapered plug (14) with an annular groove (16) for the material 5 may be fitted in the end of casing 1. The grooving 4 may be a single annular groove as shown or a plurality of straight grooves. The charge may be of a kind which, on storage, exudes a substance which would be detrimental to igniter substance if directly in contact with it.
Patent GB-690398-A (GB)
Title: An improved road traffic indicator stud
IPC: E01F9/07
Filed: 1951-01-29
Abstract: 690,398. Road-traffic signs. GUISE, A. Jan. 29, 1952 [Jan. 29, 1951]. No. 2143/51. Class 3(ii). A road traffic stud comprises a body 3 having a cylindrical bore 4 containing a piston 5 which is depressable against a resilient resistance 10 and which is connected to a reflector carrier 8, a flexible sealing diaphragm 11 extending between the top of the body and the reflector carrier, the reflector carrier having passageways 19, 20 in the head whereby upon its depression air is emitted from the passageways to clean areas adjacent the reflectors. The reflector carrier 8 is connected to the piston by a pin 7 and the reflectors 9 are positioned in grooves in the carrier so that they are protected by overhanging hoods 8b. The sealing diaphragm 11 is of rubber and engages a groove 8a in the stem of the carrier and has an upstanding rib 11a which engages beneath an overhanging portion of a ring 13 by which the diaphragm is clamped to the body 3 so as to provide a dirt proof seal. The ring 13 is cut away adjacent each reflector so that it can be seen and wipers 17 are screwed to the ring so that when the carrier is depressed the reflectors are wiped. Air is also forced by such depression through an axial passageway 19 and four radial passageways 20 to clean the space between the carrier and the ring 13.
Patent GB-284195-A (GB)
IPC: F16H15/12
Filed: 1928-01-23
Abstract: 284,195. Chambon, Ltd., (Assignees of Chambon, L.). Jan. 22, 1927, [Convention date]. Variable-speed gearing drives two shafts 15, 16 at speeds which can be varied continuously. These shafts may drive cylinders 17, 18, Fig. 4, which feed a web of paper 19 to be printed. A pulley-driven shaft 1, Fig. 3, carries splined thereon two discs 2, 3 which are pressed against a pair of rollers 5, 6 by springs 4. The rollers 5, 6 are in contact and may be moved relatively to the discs 2, 3 by suitable means to vary the speeds imparted to shafts 21, 22. Each of the shafts 21, 22 carries an even number of worms of opposite hand, in this case two, meshing with worm-wheels 11 - - 14 on the shafts 15, 16 which are driven at the same speeds in the same direction.
Patent GB-192397-A (GB)
Title: Automatic train control systems
IPC: B61L3/12
Filed: 1923-01-24
Abstract: 192,397. General Railway Signal Co., (Assignees of Bushnell, C. S.). Jan. 26, 1922, [Convention date]. Receptacles, detachably securing to flat bases. -The parts of a signalling and brake apparatus carried by a railway train are mounted in boxes of preferably magnetic material and vibration is eliminated by opposed springs 138 around rods 137 carried by a base 135.