baber/WOPTO huggingface dataset:
Patent GB-1307643-A (GB)
Title: Device for the control and regulation of a direct-current motor
IPC: H02P7/298
Filed: 1970-05-20
Abstract: 1307643 Automatic control of current LICENTIA PATENT VERWALTUNGS GmbH 20 May 1970 [24 May 1969] 24326/70 Heading G3R [Also in Division H2] The field winding 1b of a separately excited D. C. motor is supplied by a control circuit whose input is derived from armature current pick-up 9, so that the field and armature currents rise together to give a series type characteristic in a non-field weakening range. The output of the motor is determined by the setting of generator 7, and the regulator 4, which receives an input from both 7 and pick-up 9, governs the timing of pulses from pulse generator 8 and hence the output of converter 2 to the armature 1a. The field winding 1b is similarly supplied via regulator 11, pulse generator 13 and converter 3, the control input of regulator 11 being derived from field-current pick-up 12 and armature current pick-up 9 via amplifier 6 and field weakening circuit 14, 15, 10. The transistor 10 is biased fully "ON" defining the non-field weakening range unless the control at the output of regulator 4 exceeds an amount, adjustable by means of resistor 16, which when amplified at 5 is passed to the base of transistor 10 decreasing its conductance and thus introducing progressive field weakening whose degree may be adjusted by varying resistors 14, 15. Preferably converter 2 is fully conducting before field weakening commences so that higher settings of generator 7 serve only to control the field weakening. Figs. 2-4 (not shown) show respectively the characteristics of regulator 4, amplifier 5, and the desired field current as a function of the output of regulator 4.
Patent GB-1195514-A (GB)
Title: Back-Coated Ceramic Acoustical Product and Method of Manufacture
IPC: C04B33/36
Filed: 1968-05-22
Abstract: 1,195,514. Coated products. ARMSTRONG CORK CO. 22 May, 1968 [22 May, 1967], No. 24385/68. Heading B2K. A ceramic acoustical product comprises an inorganic wool/clay board back-coated' with not less than 15 grams of kaolin clay per square foot having an average particle size of from 1.0 to 2.0 microns, the kaolin clay, when mixed with 50% of Ottawa sand and fired as a sand-clay brick, having a modulus of rupture of 50 Ibs. square inch or less, the coated board then being fired at 1,000 to 1,600‹F. The clay board may comprise 20- 65% clay and 35-80% of mineral wool. The kaolin clay may have a particle size such that not more than 40% of the particles are 1.0 micron or below and not less than 80% of the particles are 5.0 microns or below in size.
Patent GB-233600-A (GB)
Title: Improvements in apparatus for treatment of the ear
IPC: A61F11/00
Filed: 1924-10-15
Abstract: 233,600. Nastasia, R. M., and Nastasia, J. Oct. 15, 1924. Ear instruments; gas injectors and douches.- In an apparatus for treating the ear with gases, a tubular member 23 which conducts the gas into the ear is adapted to support a mantle which, when ignited, will generate the gas. The mantle is carried by a conical member 11 of wire gauze supported by standards 12 adapted to screw into a holder 16 which in turn is held in the member 23. The member 23 is formed with corrugations 27 and finger-grips 28, and tapers, as shown in the Figure, towards its discharge end 29. In use, the discharge end 29 of the appliance is inserted into the ear through an orifice 34 in a protecting blanket 30, and a mantle of combustible material is supported in the member 11, the mantle being saturated with a reagent such as a paraffin hydrocarbon which evolves gases heavier than air when the mantle is ignited. It is stated that the gases so produced descend into the ear and dislodge foreign matter, which is deposited in the corrugations 27. the gases escaping through orifices 33 in the blanket.
Patent GB-359103-A (GB)
Title: Improvements in and relating to internal combustion rotary engines
IPC: F01C1/44
Filed: 1930-08-15
Abstract: 359,103. Rotary engines. MEYER, R. J., 1557, Fillmore Street, Denver, Colorado, U.S.A. Aug. 15, 1930, No. 24494. [Class 110 (ii).] Fixed-abutment type ; driving compressors.-A compressor 10 and an internal-combustion engine 11 of the type shown in Fig. 9, operate on the same shaft 17 and are separated by a water-cooled chamber 46 wherein compressed gas is cooled before being delivered to the engine. The compressor and engine have water cooling jackets fed by inlet pipes 19, 20, respectively ; the water leaves by a branch pipe 21 to an outlet 22. The water may circulate through external radiators. Pockets 84 are bored in the engine rotor to contain the compressed fuel charge. Balance weights 32 counteract centrifugal action on the vanes, and springs hold the vanes against the bore of the casing when the engine is stationary. End chambers 36, 47 in the compressor are connected by conduits 35 bored through the trunnions 29 of the pistons, for pressure equalizing purposes. The engine rotor is similarly balanced. Discs 25, 26 are bolted to the compressor rotor and are provided with packing rings 27. A corresponding disc 28 on the engine rotor has an extension 61 which rotates inside the chamber 46. Ports in extension 61 co-operate with ports 57 in the chamber 46 to control the supply of compressed gas to the engine. A spring- loaded valve controls the delivery from the compressor to ensure a maintenance of pressure in the supply pipe 77. Lubrication ducts 66, 69, 70 are provided for the passage of lubricant under pressure. Specification 338,241, [Class 110 (ii), Rotary engines &c.], is referred to.
Patent GB-446619-A (GB)
Title: Improvements in or relating to wireless directional aerial systems
IPC: H01Q19/17
Filed: 1935-09-03
Abstract: 446,619. Directive wireless signalling. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. Sept. 3, 1935, No. 24595. Convention date, Sept. 3, 1934. [Class 40 (v)] The usual dipole aerial used in combination with a curved reflector to concentrate shortwave radiation is replaced by an aerial array 4, the directional angle w of which is equal to the angle subtended by the mirror 1. This compensates for the fact that the focus of the mirror is not sharply defined but occupies the area shown shaded. The bank of dipoles 4 may be backed by a similar bank of reflectors 5. Crossed dipoles are used to offset fluctuations in the polarization of the received waves. The aerials may be " stepped " or arranged on a curved surface to compensate for phase-differences.
Patent GB-933276-A (GB)
IPC: C07J75/00
Filed: 1960-07-14
Abstract: The invention comprises the 11,18-lactones of 3,20-diketo-11b -hydroxy-5b -pregnan-18-oic acid and of 3,20-diketo-4#x-bromo-11b -hydroxy-5b -pregnan-18-oic acid, and processes for the preparation of the 11,18-lactone of 3,20-diketo- 11b -hydroxy-pregn-4-en-18-oic acid in which a 3a -acyloxy-18,20b -epoxy-5b -pregnan-11-one is oxidised and saponified to give as intermediate product either 3a -hydroxy-11,20-diketo-5b -pregnan-18-oic acid or the isomeric 20a -hydroxy-18,20-lactone and this latter compound is reduced by reaction with an alkali metal borohydride to form the 11,18-lactone of 3a ,11b ,20b -trihydroxy-5b -pregnan-18-oic acid the hydroxyl groups at the 3 and 20 positions of which are then oxidised to form the 11,18-lactone of 3,20-diketo-11b -hydroxy-5b -pregnan-18-oic acid and finally a 4,5-double bond is introduced by bromination and elimination of the HBr, into the latter to yield the desired 11,18-lactone.  The first oxidation may be effected with a mixture of H2SO4 and chromic acid, the reduction with potassium borohydride, the second oxidation with CrO3, in acetic acid, and the dehydrohalogenation with a lithium halide-lithium carbonate couple. Specification 933,277 is referred to.
Patent GB-967499-A (GB)
Title: Improvements in or relating to devices for trimming and shaping sheet metal parts
IPC: B23D31/00
Filed: 1961-07-07
Abstract: 967,499. Copy-milling. HAMMERLE A.G. July 7, 1961 [July 21, 1960], No. 24646/61. Headings B3B and B3K. A machine for shaping a piece of sheet metal 20 comprises a work-holding carriage 5 slidable on a support 4 rotating on a stationary spindle 1 and a tool-spindle 8 mounted in a movable member 6. The movements of the member 6 are controlled by a rod 9. The carriage 5 is urged against the end of the support 4 by a rod 10 engaged by friction rollers 11, 12 which can be released by a pneumatically-operated toggle 17. Thus, as the support is rotated, the carriage with the workpiece slides back and forth to carry the whole of the edge of the sheet past the cutter. In a modification, the support 24, Fig. 3, carries a subsidiary slide 23 which itself carries the main work-slide 22. The friction wheels may be replaced by pistons.
Patent GB-246856-A (GB)
Abstract: 246,856. I. G. Farbenindustrie Akt.- Ges., (Assignees of Farbenfabriken vorm. F. Bayer & Co.). Jan. 28, 1925, [Convention date]. Void [Published under Sect. 91 of the Acts ]. Insecticides; fungicides. - Protection and immunizing media for plants and seeds are obtained by treating an organic mercury compound with an alkali phenolate, or with an alkali and a phenol, or with a salt of a weak acid such as borax. Mercury compounds specified are mercuryphenol, -chlorophenolsulphate, -phenolacetate, - cresolcyanide, -p-nitrophenol, -benzoic acid, - chlorbenzoic acid, -o-nitrophenolaceate, and -pnitrophenol-anhydride, and the sodium salts of the mercury compounds of nitrophenol, naphthols, bromonaphthols, cresols, nitrocresols, and nitrochlorocresols. Additional substances such as common salt or potassium " ferricyanate " may be added. An example of a suitable mixture consists of mercury nitrophenol, sodium phenolate, and common salt.
Patent GB-628691-A (GB)
Title: Improvements in or relating to film-forming liquids
IPC: C09D191/00
Filed: 1947-09-09
Abstract: Drying oil compositions are obtained by blending an aromatic fraction of crude petroleum obtained by liquid sulphur dioxide extraction which has been subjected to chlorination and subsequent dehydrochlorination to impart drying properties (see Group IV (b)), with a vegetable oil such as linseed or tung oil, optionally in the presence of a drying catalyst such as a naphthenate of manganese, zinc or nickel which may be present in quantities varying from 0-25 to 0.75 per cent expressed as the metal.  Specification 512,463, [Group IV], is referred to.ALSO:An aromatic fraction obtained by the liquid sulphur dioxide extraction of crude petroleum is first chlorinated and then dehydrochlorinated to give an unsaturated product with drying properties.  The chlorination is effected with chlorine gas at 85 DEG  C.\sB5 DEG  C., optionally in the presence of an inert diluent, for a period of time depending on the extent of chlorination required. Products containing about 15 to 20 per cent of chlorine are suitable although according to the subsequent drying properties required the amount of chlorine present may vary from 4 to 40 per cent.  Dehydrochlorination is effected by heating at 200 DEG to 250 DEG  C., e.g. about 240 DEG  C., until hydrogen chloride is no longer evolved optionally in the presence of such catalysts as aluminium chloride, benzoyl peroxide or iron sulphide.  In an example, an aromatic fraction of crude petroleum of given physical properties, obtained by extraction with liquid sulphur dioxide is heated to 60 DEG  C. after removal of sulphur dioxide and chlorine passed in, the temperature rising to and being maintained at between 80 DEG  and 85 DEG  C. until the product contains approximately 15 per cent of chlorine, when it is heated at 240 DEG  C. until the evolution of hydrogen chloride ceases to give a product with drying properties. Specification 512,463 is referred to.
Patent GB-1512618-A (GB)
Title: Process for preparing oligomers of tetrafluoroethylene
IPC: B01J31/00
Filed: 1976-06-15
Abstract: 1512618 Oligomers of tetrafluoroethylene CENTRAL GLASS CO Ltd 15 June 1976 [16 June 1975] 24783/76 Heading C2C Oligomers of tetrafluoroethylene are prepared by reaction of CF 2 =CF 2  in an organic solvent in the presence of, as catalysts, an alkali metal, ammonium or quaternary ammonium fluoride and a crown ether. The reaction is preferably performed at 20-200‹ C. using a complex of the ether/fluoride. Suitable catalysts are KF and 18-crown-6. A small amount of alphapinene catalyses the reaction. In an example a 60À4% conversion of C 2 F 4  was achieved with a selectivity to oligomers of 64À9% and a 58À6% production of pentamer (c.f. corresponding comparative results without fluoride and crown ether are 65À9%, 43À5% and 57À3%.
Patent GB-953232-A (GB)
Title: Improvements in or relating to cable winding apparatus
Inventor: FRIARS FREDERICK WILLIAM
IPC: G21C17/10
Filed: 1961-07-10
Abstract: 953,232. Winches. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. July 3, 1962 [July 10, 1961], No. 24833/61. Heading B8B. [Also in Division G6] A winch for withdrawing a thermo-couple cable from a nuclear reactor channel comprises a cast iron shielding body 1 having a chamber 2 enclosing a cable winding reel 3, an opening 4 to the chamber being normally closed by a door 5 hinged about a pin 6. The reel 3 has a square aperture (Fig. 3, not shown) whereby it is mounted on the square section end portion 9 of a fitting 13, this fitting being keyed to, and slidable in, the hollow end of a shaft 8 driven by a sprocket 22 through a one-way clutch 23. The fitting 13 is connected to a spring-biased spindle 12 having an end 26 engageable by a tool (not shown) whereby pulling on the end 26 causes the end portion 9 to be withdrawn from the reel aperture and the reel to drop through a discharge port 39 after removal of a sliding bolt 40. A drum 75 has wound thereon a compressed gas hose 85a supporting a thermocouple cable cutting device 85 as disclosed in Specification 953,233, this device being received in a vertical passage 52 in the body 1. The passage 52 has a lamp 59 and an observation port (Fig 2, not shown) and is connected to the chamber 2 by a passageway 57. The drum 75 is driven by a handle 76 and rotates the sprocket 22 through a chain 80 and a chain-wheel mounted on the drum axis, the drive to the sprocket including a friction clutch. In use the winch is clamped on a shield box 83 located over a reactor charge tube 84 and the end of a selected thermocouple cable 86 from a fuel element is threaded through the device 85 and the passageway 57 and coiled on the reel 3. The device 85 is lowered by the drum 75 to cut the cable 86 adjacent the fuel element, the clutch 23 preventing rotation of the reel 3. The device 85 is now raised and simultaneously the cable 86 is wound on the reel, the arrangement being such that the cable 86 is wound in faster than the hose 85a so that the cable is wound tightly on the reel, the friction clutch preventing overstressing the cable. When the entire cable is on the reel the winch is transported to a flask where the bolt 40 is withdrawn and the reel discharged thereinto. In another construction (Figs. 7, 8, not shown) for use where the thermocouple has a weakened section as disclosed in Specification 932,264, the drum 75 and device 85 are omitted the handle drives the reel directly.
Patent GB-1100013-A (GB)
Title: Conveyor track mounting
Inventor: WARNE WILLIAM JOHN
IPC: B65G9/00
Filed: 1965-06-11
Abstract: 1,100,013. Links. MARSHALL CONVEYORS Ltd. 26 May, 1966 [11 June, 1965], No. 24846/65. Heading F2K. [Also in Divisions B7, B8 and E2] A conveyer track is supported through a connection 13 from an angle iron and a rolled steel joist by respective connections 15, 17 by two devices each of which comprises a square section mild steel tubular stay 1 with square plugs 3, 5 welded in the ends. The plug 3 is internally threaded to receive an eye bolt 7 which is held captive by a nut 9 welded to its end and locked by a lock nut 11 after adjustment in the plug 3 to correct the line of the conveyer track. The plug 5 has a clearance hole and receives another captive eye bolt 7 which acts as a swivel and is also locked by a lock nut 11.
Patent GB-316458-A (GB)
Title: Improvements in excavating, dredging or conveying apparatus
IPC: E02F3/52
Filed: 1928-08-30
Abstract: 316,458. Moir, A. Aug. 30, 1928. Scraping-apparatus.-Apparatus for excavating peat, dredging river &c. beds, &c. comprises a scraper with a transverse blade a, and preferably with longitudinal blades b -and a top c, and a tray d connected to the scraper by eyes g engaging guide rods h; a main haulage cable. j is secured to a shackle bar i connected to cables k which pass over pulleys l on the scraper and are secured to the tray, whereby, on hauling on the main cable, the scraper first moves from the position of Fig. 1 to that of Fig. 3, to load the tray, the whole device then moving to dumping position. The device is then dumped by tightening the cable o and is returned by a, cable p. The cables may be controlled by four winches as shown, or they may form parts of a single cable controlled by two winches which may be adjacent.
Patent GB-322437-A (GB)
Title: Improvements in the manufacture and production of unsaturated fatty acids
IPC: C07C51/377
Filed: 1928-08-30
Abstract: 322,437. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). Aug. 30, 1928. Fatty acids.-Unsaturated long chain fatty acids are prepared by distilling the crude oxidation products, containing hydroxycarboxylic acids, of paraffin and the like waxes. The mixture of acids may be hydrogenated to saturated acids for the production of solid edible fats. The distillation is carried out at atmospheric or reduced pressure and at such a high temperature that the said unsaturated acids collect in the distillate and if desired in the presence of steam or inert gases. If desired a catalyst such as red phosphorus, sulphuric acid, or metal oxides may be employed as a distillation. Unoxidized products may be removed from the crude oxidation products by mechanical pressure or sweating. In examples, the oxidation products obtained from hard paraffin wax are distilled in a vacuum at 110‹ to 280‹ C. and the distillate is redistilled in an atmosphere of carbon dioxide. The oxidation products from montan wax, beeswax, ozokerite and the like may be similarly treated. An oxidation product of soft paraffin wax of brown coal tar is distilled while passing through a current of steam and raising the temperature to 260‹ C. The oxidation product of liquid paraffin wax or of montan wax may be similarly treated.
Patent GB-472091-A (GB)
Title: Improvements in and relating to phials
IPC: A61J1/00
Filed: 1936-09-14
Abstract: 472,091. Surgical syringe ampoules. MONNIER, V. Sept. 14, 1936, Nos. 25060 and 25061. Convention dates, April 20 and Aug. 6. [Classes 81 (i) and 81 (ii)] A phial comprising a non-perforated metal capsule having a thin part intended to be pierced by the needle of a syringe, and in which the capsule covers a member of elastic material, is characterized in that the elastic member is provided with at least one orifice and is placed on at least one unperforated metallic sheet closing the opening of the phial. In Fig. 1, a glass tube 1, flared to form a shoulder 3, is closed by a sheet 4 of tin, on which is placed a rubber plate 5 formed with a central or eccentric orifice 7. The plate is covered with an aluminium cap 6 secured around the shoulder 3 and formed with a thin part 8 corresponding in position to the orifice 7. The orifice 7 may be replaced by a slit, or by two slits arranged in the form of a cross. In Fig. 5, a second orifice 17 is formed in the rubber plate for the aspiration of air into the phial when the contents are drawn into the syringe. The orifice 17 is covered by a sterilized filter 19. The thin part of the cap 6 may be further weakened by two incisions therein of less depth than the thickness of the thin part. The cap 6 may be sterilized by a flame or by disinfectant.
Patent GB-162690-A (GB)
Title: Improvements in or relating to vehicle wheels
IPC: B60B25/16
Filed: 1920-07-02
Abstract: 162,690. Gelman, H. H. July 2, 1920. Disc wheels, - In disc wheels of the type in which the main part of the tyre carrying rim is permanently secured to a peripheral flange on the disc and the outer rim flange, or sections thereof, are detachably secured by bolts or other means, blocks or projections are provided on the disc flange at the points of attachment of the detachable rim flange. The body of the wheel consists of a disc 1, Fig. 1, secured to a hub or axle in any suitable manner and having a peripheral flange, to which is secured the main part 4 of the tyre carrying rim. Blocks or projections 3 are provided in the angle formed by the disc and its flange to take the bolts 7 by which the detachable flange 5 is secured. The flange 5 may be formed as a ring or as the outer edge of a disc 6 supported by the hub or axLe or an extension thereof, and may have keyhole slots so as to engage the bolts 7 by a lateral and circumferential movement. In a modification, the fixed part of the rim may comprise spaced segments of the outer flange, which is completed by other detachable segments. Fig. 12 shows a modification in which the fixed rim part has wedge-shaped dovetailed projections 15 engaging correspondingly shaped holes 16 in the detachable rim part by lateral and circumferential movement. The parts are locked by a metal shield 8, as shown in Fig. 1, which has bosses pressed inwards to engage the wide ends of the holes 16 or pockets 9 to enclose the nuts 7<x> of the bolts 7. The disc 6 and shield 8 are dished outwardly so that the tightening of the holding- on nut 10 tends to stiffen the structure.
Patent GB-518621-A (GB)
Title: Improvements relating to electrical remote-control or signalling systems
IPC: H02J13/00
Filed: 1938-08-26
Abstract: 518,621. Signalling over power circuits. SANGAMO WESTON, Ltd., GILLIVER, G., and TAGG, G. F. Aug. 26, 1938, No. 25133. [Class 40(i)] Unidirectional signal impulses are applied to a power main via a transformer. As shown, the operation of a key 5 connects the battery in one or other direction across the transformer primary 2 and connects the secondary 7 between the neutral wire and the main 10. At the same time a normally energized contactor switch 15 is released to remove a shunt from a resistance 12 which is connected in the neutral wire and an impulse is applied across this resistance from another secondary winding. The key contacts are arranged to operate in succession. to prevent the transmission of a reverse impulse when a key is released. Condenser 26 enables a small battery to be used. Specification 518,620 is referred to.
Patent GB-405061-A (GB)
Title: Improvements in stoves or heating appliances for domestic and other purposes
IPC: F24C3/00
Filed: 1932-09-10
Abstract: 405,061. Gas and oil heating-stoves THORNTON, J. E., 8, Hill Street, Jersey, Channel Islands. Sept. 10, 1932, No. 25230. [Class 126.] A portable heating-stove comprises a rear chamber A, closed on all sides but open at top and bottom for the passage of air, and containing gas or oil burners, together with a " cold " chamber at the front, which chamber is bounded in front by an imitation fire panel D extending downwardly and forwardly from the front of the chamber A, at the rear by the front of the heating chamber, in which is a transparent window a<2> of heat-insulating substance, and at the bottom by the base C of the stove. The fire-panel D may be transparent or an opaque panel having apertures or transparent parts for the passage of light passing through the window a<2> from the burners in the rear chamber. Oil or gas burners may be used, and non-luminous heating burners with separate illuminating or incandescent mantel burners may be employed. In the stove shown in Fig. 4 heating burners with radiants B<1> and illuminating burners with mantels B<2> are used. The front wall of the heating-chamber is enlarged to form a heat-accumulating wall a<3>, and a supplementary air-heating flue A<2> extends over the back and top of the chamber. Specifications 5091/04, 185,985, 271,189, [all in Class 126, Stoves &c.], and 361,608 are referred to.