baber/WOPTO huggingface dataset:
Patent GB-800717-A (GB)
Title: Separation of pyrochlore from calcite, apatite and silica
IPC: B03D1/01
Filed: 1955-10-28
Abstract: Pyrochlore (NaCaNb2O6F) is separated from mineral containing calcite, apatite and silica by subjecting the mineral to froth flotation in the presence of an aliphatic diamine containing from 14 to 20 carbon atoms in the molecule to float the pyrochlore and silica away from the calcite and apatite, treating the float product with a depressant, e.g. sodium silicate, to neutralize the activating effect of the di-amine and subjecting the product to froth flotation in the presence of an aliphatic monoamine containing from 10 to 12 carbon atoms in the molecule to float the pyrochlore away from the silica. Preferably the first floatation is carried out in the presence of an anionic wetting agent, such as an alkyl aryl sulphonate.  If iron is present, the second flotation is preferably carried out in the presence of an agent which complexes iron, e.g. citric acid, tartaric acid, sodium fluoride, sodium hexametaphosphate or ethylene diamine tetraacetic acid; if iron is present as sulphide in considerable quantity, this is floated away in an intermediate froth flotation after the depressant has been added and before conditioning for the final flotation.  The recovery of pyrochlore from sovite is specifically disclosed.
Patent GB-301193-A (GB)
Title: New process for preparing triarylmethane dyes
IPC: C09B11/16
Filed: 1927-11-17
Abstract: 301,193. British Dyestuffs Corporation, Ltd., Linch, F. W., and Rodd, E. H. Nov. 17, 1927. Triarylmethane dyes.-The process of Specification 272,321, in which triarylcarbinols are formed by interaction of arylhalides with the alkali metal derivatives of tetraalkyldiaminodiarylketones, is conducted at a temperature of about 60‹ C. in the presence of benzene as a solvent. In an example, Michler's ketone and 4-chlor-m-xylene are heated in a closed vessel to 60‹ C. in the presence of sodium and benzene. The benzene is distilled off and the dyestuff formed by dissolving the residue in hot oxalic acid and crystallizing. Specification 289,571 also is referred to.
Patent GB-1016860-A (GB)
Title: An apparatus for converting tow into sliver
IPC: D01G1/08
Filed: 1964-08-04
Abstract: Tow is converted to sliver by continuous passage through trains of prestretching rollers and at least three trains of breaking rollers the distances between which are adjustable e.g. by hydraulic mechanism.  The rollers are mounted in overhanging manner, loaded hydraulically, cooled by circulating water, and driven through variable speed gears.  The tow may be cooled by contact with a water-cooled plate.  The linear velocities of a train may be changed, the linear velocities previously established between a number of trains then being automatically maintained by means of control units wherein tachogenerators continuously measure the speeds of the trains and, by voltage comparisons with a standard (corresponding to the speed of a train chosen as a reference) operate servo motors to adjust the variable speed gears.
Patent GB-1435891-A (GB)
Title: Razor blade dispensers
IPC: B65D83/10
Filed: 1972-07-03
Abstract: 1435891 Razor blade dispensers WILKINSON SWORD Ltd 4 Sept 1973 [3 July 1972] 30989/72 Heading B8P A razor blade dispenser of the type shown in Fig. 1 is made of plastics material and provided with two integral depending guard members 10α which are adapted to embrace the head of a razor and so protect a blade mounted therein.
Patent GB-339413-A (GB)
Title: Improvements in apparatus for delivering measured quantities of liquid
IPC: G01P13/00
Filed: 1929-10-12
Abstract: 339,413. Eickmeyer, E. E. Oct. 12, 1929. Fixed-chamber apparatus.-Liquid is supplied by a pipe 1 to a transparent chamber 6 mounted within a cage 4. A dome 12 is secured to the upper end of the cage and is formed with a skirt 15 of which the visible lower end is at the same level as a mark 16 on the chamber 6. A discharge hose 14 opens into the space 17 between outer wall 11 of the dome and the skirt, while the wall is also fitted with a non-return valve 22 opening to the atmosphere. Liquid siphons through the outlet 13 until the lower end of the skirt 15 is exposed, a spinner 7 indicating that flow is taking place.
Patent GB-174229-A (GB)
Title: Improvements in means for regulating the level of oil in the oil pans of motor vehicles
IPC: B60R17/00
Filed: 1920-11-03
Abstract: 174,229. Wells, R. Nov. 3, 1920. Channels and reservoirs in engine crank casings. -The oil pan 8 and oil reservoir 3 in the casing of a motor-vehicle engine are connected by a pipe 4 so that an accumulation of oil in the pan is avoided when the vehicle is going downhill. The pipe 4 is led from the front end of the pan to the bottom of the reservoir through oil-tight fittings 7. 1 which screw into the nan and reservoir respectively. The height of the fitting 7 above the floor of the pan may be varied to regulate the height of the oil in the pan. The pipe 4 may be curved to conform to the shape of the oil-pan.
Patent GB-383409-A (GB)
Title: Improvements relating to basting devices for ovens
IPC: A47J37/04
Filed: 1931-11-10
Abstract: 383,409. Basting-appliances. JOHNSTON, D., 84, Montague Street, Rothesay, Buteshire. Nov. 10, 1931, No. 31110. [Class 28 (i).] A basting - device comprises a " squirrel cage 1 made in halves hinged longitudinally together, a dish 4 containing basting material into which the cage dips, and the bars 5 of the cage and the gas-jet are so arranged that the turning of the cage is effected by the rising products of combustion impinging on the bars. The meat is held between adjustable centres 15 in the cage and the cage is journalled in frictionless bearings. The rotation may be assisted by a handle disposed externally of the casing 2. The bearings may be vertically adjustable, or an alternative set of bearings 11<1>, with a corresponding support 14<1> for the dish 4, may be provided at a lower level.
Patent GB-864426-A (GB)
Title: Stress relief cone for electric cable terminations
IPC: H02G15/068
Filed: 1957-10-04
Abstract: 864,426. Cable terminations. I-T-E. CIRCUIT BREAKER CO. Oct. 4, 1957 [Oct. 24, 1956], No. 31189/57. Class 36. A prefabricated stress relief core for preventing breakdown at the termination of a high voltage cable comprises a conical conducting member 18 embedded in a mass 21 of epoxy resin whose dielectric constant is equal to that of the cable insulation 12. The external surface may be corrugated and a filler 22 is inserted between the cable and the bore of the cone. Reference has been directed by the Comptroller to Specification 825,891.
Patent GB-393187-A (GB)
Title: A container or pot for plants
IPC: A01G9/02
Filed: 1932-11-05
Abstract: 393,187. Pots for growing plants. ENGELMANN, C. G., 123, Ashdon Road, Saffron Walden, Essex. Nov. 5, 1932, No. 31209. [Class 6 (ii).] A flower-pot is formed by bending up a blank of paper or card of the shape shown. The ends of the blank are fastened together by passing a tongue 1 through a slit 1A and a tongue 2 through a slit 2A. The bottom is formed by bending up tongues 3, 4 and then tongue 5, the end of tongue 5 being pushed under tongue 1 inside the pot. Specifications 8355/05, [Class 6, Agricultural appliances for the treatment of land &c.], and 388,580, [Group XVI], are referred to.
Patent GB-1188112-A (GB)
Title: Improvements in and relating to Surface Coating
Inventor: BASHFORD LESLIE ARTHUR
IPC: C07C69/527
Filed: 1966-07-12
Abstract: 1,188,112. Coating. COURTAULDS Ltd. 11 July, 1967 [12 July, 1966], No. 31241/66. Heading B2K. [Also in Divisions C2 and C3] A surface is coated with a composition comprising an unsaturated ester of the general formula: in which R is H or alkyl, R<SP>1</SP> is alkylene and R<SP>2</SP> is an aliphatic radical containing at least one C=C bond, the ester being liquid at room temperature, having a boiling point of at least 200‹C and a molecular weight of less than 800, with or without a curable binder. In the Example a mild steel panel is coated with a solution of an unsaturated fatty acid modified alkyd obtained by condensation of safflower fatty acids itaconic acid and trimethylolpropane to form an alkyd which is dissolved in diallyloxypropyl fumarate.
Patent GB-1283941-A (GB)
Title: Improvements in fairings for rocket launchers
Inventor: SATCHWELL FRANCIS JOHN
IPC: F41F3/065
Filed: 1969-06-20
Abstract: 1283941 Rocket launcher fairing THOMAS FRENCH & SONS Ltd 17 Sept 1970 [20 June 1969] 31249/69 Heading F3C A fairing 10 for a rocket launcher (not shown) has rocket guides 18 therein, each of which is provided with a closure 20, the latter being opened by passage of a rocket through the respective guide 18 and the opened parts of the closure being retained on the fairing after discharge of the rocket. Each closure 20 has a weakened portion 21, Fig. 2, or weakened portions 21a which are broken by the passage of the rocket, alternatively the closure may be made up of separate sections 28, Fig. 3, held together by a member 29, the latter being grooved to receive edges 30 of the sections 28 therein, or a closure 31 may be provided and positioned over its guide 18, the closure 31 being weakened at 32. The fairing 10 comprises parts 10a, 10b, Fig. 2, which are fastened together by means of plates 14, 15 and bolts 17, the latter passing through holes 16 in the parts 10a, 10b which may be made of synthetic plastics ma. terial. In a modification, a fairing 10, Fig. 4, comprises six sectors 25 held together by a band 26 of flexible material which is secured to the sectors by bolts 27. An additional band 28 may be provided.
Patent GB-1433309-A (GB)
Title: Process for preparing halogen-containing organic isocyanates
IPC: C07C265/08
Filed: 1974-07-15
Abstract: 1433309 Polyurethanes KAO SOAP CO Ltd 15 July 1974 [17 July 1973] 31249/74 Heading C3R [Also in Division C2] A one-shot rigid polyisocyanate-polyurethane foam is prepared from the following formulation; 45 parts by weight of a polyoxypropylene triol having a hydroxy number of 520, 2À0 parts by weight of a silicone surfactant, 2À0 parts by weight of tetramethyl-hexamethylene diamine, 25 parts by weight of a "Freon" (Registered Trade Mark) and 100 parts by weight of a polyisocyanate which has been prepared by reacting 2,4-bis-(chloromethyl) chlorobenzene with sodium cyanate in the presence of N-formylmorpholine at 110 to 120 C.
Patent GB-318043-A (GB)
Title: Improvements in or connected with machines for shredding or splitting and chipping orange or lemon peel or such like
IPC: A23N4/18
Filed: 1928-10-29
Abstract: 318,043. Hartley, W. T. D., Turnbull, F. G., and Brierley, Collier & Hartley, Ltd., W. Oct. 29, 1928. Essential oils, extracting.-A device for use in connection with machines for shredding and chipping orange or lemon peel and the like, in which the coloured rind is separated from the pith by a dividing knife, provides means by which the volatile oil is expressed from the rind, gathered, and removed and directed into a drainage trough leading to a collecting receptacle, for subsequent, use in the manufacture of marmalade. The feed rollers a, a<1> are grooved and the peel, after separation from the pith by a knife b, is squeezed between the roller a<1> and the angle bracket b', the oil thus expressed being carried off on the feed roller. The oil is gathered by the gathering roller f, which may be geared to the feed roller a', and is scraped off by the scraper i and directed into the trough which leads it into the drainage channel k. The gathering roller f may be lifted and turned back on its radius arm f<1>. Specification 246,069, [Class 5 (i), Farmyard &c. appliances], is referred to.
Patent GB-1000206-A (GB)
Title: New vat dyestuffs and process for their manufacture and use
IPC: C09B1/16
Filed: 1962-08-15
Abstract: The invention comprises vat dyestuffs that contain at least one substituent imparting solubility in water, at least one aryl residue bound through an oxygen atom and two anthraquinone residues (including anthrone residues having four or more fused rings) which are joined together by an -NH-X-NH- bridge in which X is the residue of an organic di- or tri-basic acid. Examples include sulphonated bis-(aryloxyanthraquinonylamino)triazines and sulphonated bis - (anthraquinonylamino) derivatives of dicarboxylic acids such as oxalic, succinic, terephthalic, diphenyl-4: 41-dicarbo-oxylic and thiophene 2: 5-dicarboxylic acids. The dyes are made by sulphonation of an appropriate vat dye, by reacting a phenol or naphthol with a suitable halo- or nitro-vat dye or by acylating an aryloxyaminoanthraquinone with a di- or tribasic carboxylic acid and, if necessary, sulphonating the product, or by sulphating or acylating with an acylating agent containing a water-solubilizing group an appropriate vat dye containing a hydroxy group.  The dyes dye cellulose ethers and esters, polyamides, polyacrylonitrile and polyurethane fibres, wool and silk but particularly cotton by the vat-dyeing process.
Patent GB-1106015-A (GB)
Title: Improvements in or relating to catalysts suitable for the disproportionation of olefins
Inventor: HOWMAN ERIC JAMES
IPC: B01J23/36
Filed: 1965-07-23
Abstract: Disproportionation catalysts result when acid treated Al2O3 is impregnated with MoO3, WO3 or Re2O7 or a precursor therefor, or a carbonyl of Mo or W.  Additionally the catalyst may contain CoO or a minor amount of an alkali or alkaline earth metal ion.  Reference is made to washing g -Al2O3 with HCl or CH3COOH.  The catalyst may be used in a fixed or fluidized bed.
Patent GB-480202-A (GB)
Title: Improvements in and relating to carburetters for internal combustion engines
IPC: F02M7/14
Filed: 1936-11-17
Abstract: 480,202. Spray carburetters. ROBB, R. Nov. 17, 1936, Nos. 31477/36 and 11987/37. [Class 7 (iii)] A slow-running jet supplies fuel to an auxiliary air passage which communicates with the induction pipe on the engine side of a rotatable valve 5 which controls the air inlet and mixture outlet and simultaneously controls the fuel delivery from a nozzle 4 having jets 4a. In the construction shown in Fig. 10 a slowrunning jet 15 discharges into a passage 13 which communicates with the induction pipe on the engine side of the valve 5 through a passage 12 and with the atmosphere through an opening 14. The jet 15 may be controlled by a needle valve 16 which may be operated with a valve controlling the opening 14 or the jet 15 may be of fixed size and the opening 14 be controlled by a valve. In the construction shown in Fig. 12, the slow-running jet is located in the nozzle 4 and controlled by a collar 19 having a hole 19a which registers with air passages 20, 22, 20a. In the slow running position one of the jets 4a may be uncovered. The fuel control may be formed by a needle valve or by a sleeve fitting over or in the nozzle 4. The sleeve 7, Fig. 1, which is adjustably secured to a split extension 5c on the valve 5 and rotated by hand or by a governor, has a V-shaped slot or an angled edge to control the jets 4a in the nozzle 4. To ensure correct positioning of the nozzle it is provided with slotted collar 4c which is held in engagement with a pin on the float chamber by a nut 4b. Extra air, regulated by a screwed cap 9b, Fig. 3, is admitted through a passage 9 when the valve 5 is almost closed. Venturi tubes 10, 10a may be provided in the valve 5 or the air inlet.
Patent GB-173663-A (GB)
Title: Improvements in or relating to plansifters
IPC: B07B1/38
Filed: 1920-11-08
Abstract: 173,663. Neal, B. Nov. 8, 1920. Drawings to Specification. Sieves with compound or variable motion.- The ground product of wheat is separated in various stages of comminution by conducting a series of streams of the ground product simultaneously through a number of separate and similar plansifter devices, means being provided for combining streams of like finished and unfinished products from the separate devices and conducting them separately from the machine. The apparatus described for carrying out the invantion is identical with that described and claimed in Specification 173,664.
Patent GB-347613-A (GB)
Title: Improvements in and relating to the production of benzoyl benzoic acid derivatives and anthraquinone derivatives therefrom
IPC: C07C225/34
Filed: 1929-10-17
Abstract: Amino-chlorbenzoylbenzoic acids and aminochloranthraquinones therefrom are obtained by treating dichlorbenzoylbenzoic acids, obtainable by condensing a dichlorphthalic anhydride in the customary manner with benzene, with ammonia or methylamine, to replace one atom of chlorine, and subsequently ring-closing the product.  According to examples, the dichlorbenzoylbenzoic acids obtained by condensing 3 : 4- and 4 : 5-dichlorphthalic anhydride with benzene, are treated with ammonia and the products ring-closed to give the corresponding aminochloranthraquinones. Methylamine as aminating agent is also exemplified.
Patent GB-485202-A (GB)
Title: Improvements in presses for the extrusion of lead sheaths for cables
IPC: B21C23/28
Filed: 1936-11-19
Abstract: 485,202. Squirting. HYDRAULIK GES. Nov. 19, 1936, Nos. 31672 and 31673. Convention dates, Nov. 19, 1935 and Oct. 16, 1936. [Class 83 (iv)] In a press for the extrusion of lead sheaths for cables having a vertically movable press ram and a stationary extrusion chamber divided in a horizontal plane, the chamber lying transversely to the direction of movement of the ram, both the lateral parts or columns of the frame act as abutments for the means which hold the upper section down upon the lower section. A press comprises a ram 16, Fig. 1, moved downwardly by a pressure cylinder 14 which is carried in a cross-head 11 located by nuts 12 on screwed portions of columns 6. The ram is retracted by plungers 18 secured to a cross-head 19 and working in cylinders 17 mounted on a cross-head 3 which is retained by nuts 13 on the columns 6. The upper section 2 of the chamber is pressed down upon the section 1 by the cross-head 4 which carries the container 5 under the action of nuts 8. In a modification the upper section 2, Fig. 2, is pressed down by wedges 10 driven between abutments 9 on the press frame and the transverse member 4'. In further modifications, the wedges 10 are replaced by leaf springs, rubber, or hydraulic buffers. Resilient means may be provided between the nuts 8, Fig. 1, and the cross-head 4.
Patent GB-665973-A (GB)
Title: Improvements relating to control systems for direct current motors
IPC: H02P7/34
Filed: 1949-12-09
Abstract: 665,973. Control of D.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd., and MAGGS, A. H. Nov. 17, 1950. [Dec. 9, 1949] No. 31668/49. Class 38 (iii). [Also in Group XXXV] A control system comprises a D.C. generator having a constant speed wave-wound armature 1 and a shunt field winding in two seriesconnected sections 3, 4, the section 3 being wound only on certain of the poles and continuously excited when the generator is operating, and producing a lower generator voltage than that obtained when the section 4 is also energized. A D.C. motor has an armature 7 together with a shunt field winding 9 which is permanently connected. to the terminals of the generator. Relays 17, 18, are adapted either to maintain a short-circuit across the motor armature or to cause it to be supplied from the generator simultaneously with the removal of the short-circuit. The motor can rotate selectively in either direction at one speed with the generator voltage at its lower value, or the generator voltage may be increased by the energisation of the winding-section 4, thus providing reversible operation at alternative speeds..The motor is rapidly decelerated and maintained at rest with the assistance of a brake having winding 10. The relays 17, 18 are controlled by four switches to give forward or reverse operation at high or low speed, one each of the forward and reverse control switches having normally closed contacts 23, 27, adapted to short-circuit the winding-section 4 during low voltage operation. The magnetic circuit of the motor is at the point of saturation when operated at the lower voltage so that, at the higher voltage, the motor flux is not greatly increased and the motor speed is thus maintained substantially proportional to applied voltage. Specification 625,740 is referred to.
Patent GB-468187-A (GB)
Title: Improvements in and relating to electric contact mechanisms
IPC: H01H50/54
Filed: 1936-11-19
Abstract: 468,187. Switch contacts and induction relays. BRITISH THOMSONHOUSTON CO., Ltd. Nov. 19, 1936, No. 31715. Convention date, Nov. 20,1935. [Class 38 (v)] To prevent rebound of a contact such as a relay contact when moved to engage a fixed contact a mass is provided located directly or indirectly in contact with the fixed contact and freely movable with respect thereto, to which mass the energy on impact is imparted and dissipated by setting said mass into motion whereby to absorb the kinetic energy of the movable contact. As shown in Fig. 1, an energy-absorbing mass such as a ball 18 is normally in engagement with the side of the contact 11 opposite its contact-engaging surface. The ball is positioned in a tubular chamber 19 fitting closely around the ball so as to retard its movement, the movement of the ball being limited by an inturned flange at the outer end of the chamber. When the contact 11 is engaged by a contact 10 carried by a pivoted arm 12, the kinetic energy of the contacts is at once absorbed by the ball. To assist this action the spring arm 14 carrying the contact 11 is permitted a limited movement in a slot 17 of an adjustable member 16. The chamber 19 is inclined so that a retarded return movement of the ball takes place. The angular position of the chamber may be varied by adjustment of the plate 21 by which it is carried. In the modified arrangement shown in Fig. 4, instead of transferring the kinetic energy of the contacts directly to the ball 18, a second movable mass such as a ball 22 is suitably cushioned in an outer compartment of the tubular chamber 19, a buffer pad such as a felt washer 23 being held against a shoulder of an inner ring 24. In this case, while most of the energy is transferred to the ball 18, some is absorbed by the buffer pad as it is compressed. The ball 18 may also have a cushioning buffer 25. A device of this type may be employed in conjunction with an induction relay, Figs. 2 and 3 (not shown), in which the contact arm is driven through a friction clutch.
Patent GB-1513508-A (GB)
Title: Reducing gear-train of an electronic watch with analogue display
IPC: G04B33/00
Filed: 1976-07-30
Abstract: 1513508 Electronic watches DEVHORL SA 30 July 1976 [30 Aug 1975] 31769/76 Heading G3T A speed-reducing gear train between a stepping motor 1 and the hands 10 of an electronic watch comprises a wheel and pinion 3, 3' driven by the motor pinion 2 and driving a further wheel and pinion 4, 4' and thus an off-centre centre wheel and pinion 5, 5', the latter pinion driving an intermediate wheel 8 meshing with cannon pinion 7 so that the latter revolves more slowly than the pinion 5'. The necessary gear ratios between the pinion 2 and wheel 5 are therefore smaller. The motor pinion revolves e.g. through # rev. per second. As shown the wheel 8 is a dial train wheel with a pinion 8' driving hour wheel 9. Alternatively the intermediate wheel may be a separate idler  (6), Fig. 1 (not shown). As there is only a single  wheel 9 centrally beneath the dial, a reduced diameter portion of a drive cell (not shown) may  be placed adjacent that wheel.