baber/WOPTO huggingface dataset:
Patent GB-976065-A (GB)
Title: Lumiergoline derivatives
IPC: C04B35/58
Filed: 1963-06-04
Abstract: The invention comprises compounds of formula <FORM:0976065/C1/1> wherein R is a hydrogen atom or a methyl group and R1 is the group -CH2NHR11 in which R11 is a hydrogen atom or the radical of an aliphatic, cycloaliphatic, aromatic or heterocyclic carboxylic or sulphonic acid having 1 to 10 carbon atoms, optionally substituted by halogen atoms, free or alkylated amino-groups, nitro-, hydroxy, alkyl, alkoxy, phenoxy, thioether, carboxylic or sulphonic groups, and including alkoxycarbonyl and carbamoyl radicals, and their preparation by irradiating lysergamide or 1-methyl lysergamide with ultra-violet light in dilute aqueous organic acid solution to yield lumilysergamide or 1-methylumilysergamide, reducing the products thus obtained to the corresponding amine, and, if desired, reacting this with the chloride or anhydride of the appropriate carboxylic or sulphonic acid.  Numerous acids are listed.  1-methylation may be effected before or after irradiation by reaction with a methyl halide in liquid ammonia and in the presence of metallic potassium.  The compounds of the invention have oxytocic; antienteraminic, adrenolytic, hypotensive and sedative activity, and may be used in pharmaceutical compositions in combination with a therapeutically acceptable carrier in forms suitable for oral or parenteral administration, for example as tablets, powders, pills, capsules or liquids.
Patent GB-614758-A (GB)
Title: Detachable backs for tenon saws and the like
IPC: B27B21/08
Filed: 1946-07-26
Abstract: 614,758. Saws. PURCHASE, J. July 26, 1946, No. 22248. [Class 61 (ii)] A tenon or back saw has the blade stiffener completely detachable and formed of two bars 13, 13a, clamped along the back edge of the blade by screws 17 located in notches along the blade and screwing into tapped holes in one of the bars. Two of these fixing screws may be removed and a detachable fence 20 with slotted arms 21 secured by wing screws 22.
Patent GB-514768-A (GB)
Title: Improvements in high vacuum condensation or diffusion pumps
IPC: F04F9/00
Filed: 1938-05-14
Abstract: 514,768. Diffusion pumps. EASTMAN KODAK CO. May 14, 1938, No. 22259/39. Convention date, May 18, 1937. Divided out of 514,749. [Class 71] In a fractionating high vacuum or condensation pump using organic operating fluids of a mixed character, such as the cascade diffusion pump described in Specification 473,978, the disadvantages which arise if the lowest vapour pressure constituents are delivered to the highest vacuum jet, e.g., 72, Fig. 1, are obviated by connecting the boiler compartment, which supplies the chamber B leading to the jet 72, to the boiler compartment of chamber D thus bye-passing the boiler compartment of chamber C. This chamber C thus receives the most phlegmatic portions of the mixed working fluid, the boiler compartment of chamber D being connected to that of chamber C.
Patent GB-925223-A (GB)
Title: Improvements in and relating to cushions, pillows and other upholstered supports
Inventor: WRIGHT JAMES PATRICK
IPC: B26D1/00
Filed: 1960-06-25
Abstract: 925,223. Cushions &c. HARRISON & JONES Ltd. Sept. 6, 1961 [June 25, 1960], No. 22329/60. Class 52 (4). A cushion with a dome or domes 14 is formed from a block 10 of resilient material, e.g. rubber or synthetic foam, by incising only a part 15 of the peripheral edge of the block 10 to form a pocket 13 therein and thereafter introducing a filler material into the pocket. The incision 15 may be subsequently sealed. The filler material may be diced or granulated and may be treated with an adhesive before its introduction to the pocket 13.
Patent GB-317438-A (GB)
Title: A process for desulphurising viscose artificial silk
IPC: D01F11/02
Filed: 1929-07-20
Abstract: 317,438. British Enka Artificial Silk Co., Ltd., (Assignees of Naamlooze Vennootschap Nederlandsche Kunstzijdefabriek). Aug. 16, 1928, [Convention date]. Sulphur.-Artificial silk from viscose is desulphurized with ammonium sulphide solution applied in a cycle; part of the polysulphide solution obtained in the desulphurizing step is distilled under pressure so as to yield liquid sulphur and ammonium sulphide, which is returned to maintain a predetermined concentration. Thus, hanks of viscose silk may be passed through baths of ammonium sulphide solution or through showers of the solufion, and the baths, or the collecting tanks beneath the, showers, may be continuously circulated, part of the solution passing to apparatus in which distillation is effected at 112-118‹C. under pressure. The water vapour, ammonia, and hydrogen sulphide evolved are condensed and used again, while the liquid sulphur is with. drawn. An ammonium sulphide solution of 1-2 per cent strength used at 20‹C. is suitable.
Patent GB-829380-A (GB)
Title: Improvements in or relating to centrifugal clothes driers
Inventor: POOLE RONALD ROBERTSON
IPC: D06F49/02
Filed: 1957-07-16
Abstract: 829,380. Spin-driers. GENERAL MOTORS Ltd. April 3, 1958 [July 16, 1957], No. 22432/57. Class 34(2) The drum of a spin-drier comprises frusto-conical parts 2, 3 having respective flanges 11, 12, so shaped, that on welding together, water extraction slots 13 are formed. The drum, which has a raised base surface 9 and perforations 10, is of enamelled or painted sheet metal.
Patent GB-480017-A (GB)
Title: Improvements in or relating to automatic frequency control circuits for carrier wave receivers
IPC: H03J7/04
Filed: 1936-08-15
Abstract: 480,017. Wireless receiving circuits. KINROSS, R. I. Aug. 15, 1936, No. 22524. [Class 40 (v)] The frequency changer valve 1 of a superheterodyne receiver also functions as a thermionic reactance or frequency control valve for automatic tuning by utilizing the mutual conductance existing between the oscillator anode and the control grid, part of the voltage across the tuned circuit 4, 5, of the local oscillator being fed to the signal grid over resistance 11, while the bias of that grid is varied in accordance with sense and magnitude of departure from exact tune by the usual error-detector network 22 ... 30. By this means a voltage 90‹ phase-displaced from the oscillator anode voltage is applied to the control grid, and the valve 1 presents across the circuit 4, 5 an inductive reactance variable with the bias on the control grid since the input circuit 6, 7 has a capacitative reactance at the oscillator frequency when the latter is higher than the signal frequency. The values of condenser 8 and resistance 11 are so chosen that about 1/ 20th of the oscillator voltage is transferred to the signal grid. To increase the range of automatic control with this arrangement the oscillator coil 4 may be wound in two opposing sections connected at their junction to the oscillator anode.
Patent GB-387608-A (GB)
Title: Improvements in and relating to the treatment of jute fibres
IPC: D02G3/00
Filed: 1932-08-12
Abstract: 387,608. Dyeing jute roving during spinning. RENNY, C. J. D., Dormers, Barry, Angus, and BRAND, W. T., 16, Oxford Street, Dundee. Aug. 12, 1932, No. 22587. [Class 120 (ii).] Jute roving is dyed before being drawn in its passage to the flyers in spinning-frames. Roving passes from supply bobbins 3 through a dye tank 1 or over a roller rotating in a dye tank, between rollers 6 to express surplus liquor, and over a guide roller 7 to the usual rollers 8, 9 and the spinning-spindle. The spun yarn may be dried on the bobbins which are preferably perforated, or the roving may be passed over a heated roller after leaving the rollers 6. Specification 600/98, [Class 120, Spinning], is referred to.
Patent GB-203708-A (GB)
Title: Process for the production of aluminium-fluoride-alkali-fluoride double compounds technically free from iron
IPC: C01F7/54
Filed: 1923-09-08
Abstract: Aluminium is separated from ferruginous solutions by precipitation as aluminium-alkali fluoride by adding to the solution (such as that obtained by treating clay with a mineral acid) hydrofluoric acid and an alkali salt or a fluoride and a mineral acid such as hydrochloric or sulphuric acid under such conditions that the iron is not precipitated.  To ensure that the precipitate shall be free from iron, either a small excess of unprecipitated aluminium salt is left in solution, or the solution is treated before the precipitation, so as to reduce the iron to the ferrous condition, for instance by passing sulphuretted hydrogen through the solution.  The free acid left in the mother-liquor after the separation of the precipitate may be used to treat more clay.  Examples describe the treatment of crude aluminium chloride or sulphate solution obtained from clay with hydrofluoric acid and sodium chloride; hydrofluoric acid and sodium sulphate; hydrochloric acid and potassium fluoride; and hydrochloric acid and sodium fluoride.  In some cases the iron is first reduced with sulphuretted hydrogen.
Patent GB-1330060-A (GB)
Title: Production of maleic anhydride
IPC: C07C51/31
Filed: 1971-04-19
Abstract: 1330060 Maleic anhydride BADISCHE ANILIN- & SODA-FABRIK AG 19 April 1971 [28 Feb 1970] 22671/71 Heading C2C Maleic anhydride is prepared by adding benzene to air which has been heated to a temperature of from 100‹ to 200‹ C. and passing the resulting gas mixture to a tubular reactor containing a catalyst consisting of 45 to 90% by weight of TiO 2 , from 0À2 to 20% by weight of V 2 O 5 , from 8 to 30% by weight of MoO 3  and from 1 to 20% by weight of P 2 O 5 , maintaining a temperature of from 380‹ to 450‹ C. in the interior of the tubes, heat exchange being effected by means of a salt bath kept at from 355‹ to 370‹ C. which is recycled through the reactor by entering and leaving uniformly from all directions through an annular duct, the reaction gas leaving the reactor being cooled to a temperature of from 160‹ to 180‹ C. and then fed to a scrubbing tower in which the maleic anhydride is scrubbed out by means of a recycled cooled aqueous maleic acid solution, the recovered 30 to 50% maleic acid solution being concentrated to more than 90% in a falling film evaporator or a succession thereof, the concentrate being split in another falling film evaporator into maleic anhydride vapour and steam, the removal of the water of reaction being effected without any inert entrainer directly by the maleic anhydride vapour, the crude maleic anhydride obtained by fractional condensation being continuously distilled.
Patent GB-1344381-A (GB)
Title: Axial flow compressors
IPC: F01D5/14
Filed: 1971-04-19
Abstract: 1344381 Cooling axial-flow compressors GENERAL ELECTRIC CO 19 April 1971 [1 June 1970] 22713/71 Heading F1C Air is bled from between the first-stage stator blades 44, Fig.2, and the second-stage rotor blades 28 and passes into the interior of the rotor via forwardly curved slots 56, Figs.3 and 4, and the space between sheet metal cones 58a and 60 which are spaced apart by sheet metal spacers 62, 64. The air then passes through successive chambers banded laterally by adjacent rotor discs 26. When the air has passed through the space between the bore of each rotor disc 26 and a central duct 48 to enter the next chamber, it is impelled centrifugally to flow along the spacer 30 connecting the rotor disc to the next rotor disc, thereby cooling the rotor and consequently becoming heated and less dense so that it is displaced radially inwards towards the next chamber. On leaving the final chamber, the air passes via holes 66 into the interior of the duct 48, leaving the other end of the duct via holes 68 to enter a chamber 70 and thence re-entering the main stream between inlet guide vanes 76 and the firststage rotor blades 28. The slots 56 are formed in a flange of the conical end wall 34, this flange being sandwiched between similar flanges of the spacers 30 of the first and second stage rotor discs 26, the flanges being secured together by bolts 32.
Patent GB-986390-A (GB)
Title: An electro-acoustic transducer
IPC: H04R9/06
Filed: 1961-06-22
Abstract: 986,390. Electrodynamic transducers; diaphragms. G. R. POUTOT. June 22, 1961 [June 23, 1960], No. 22725/61. Heading H4J. A rigid diaphragm for a loud-speaker or microphone has, a specific gravity of less than 0À1, one plane side and on its opposite side at least one protrusion which carries a conductive member disposed in a magnetic field. The diaphragm 1a consists of a foamed polystyrene rectangular sheet (specific gravity less than 0À02) of dimensions 120 x 80 x 6 mm. and it has a number of parallel grooves 14 formed in one face thereof. An aluminium wire 2a or ribbon (Fig. 3, not shown) is glued to the projecting ribs 15 so as to form a number of rectangular loops (Fig. 11, not shown). The magnet system comprises a number of sheet-metal laminations 22, 23 of high permeability which are glued to plates 24 of a magnetic ferrite material, the individual " magnets " so formed being retained in a framework 18a, 18b, 25a, 25b. The diaphragm la is positioned and supported above the magnets by flexible strips 12a, 13a of foamed P.V.C. or polyurethane. Stranded leads 16 connect insulated terminals 20a, 20b to the coil (2a). The use of triangular shaped and trapezoidal diaphragms is discussed with reference to Figs. 4, 5 and 8, 10 respectively (not shown) and a number of conventional circular coils are used on a diaphragm described with reference to Figs. 13 and 14. It should be noted that for any free point on the plane side of the diaphragm a cone can be drawn with its vertex at the junction of a protrusion and the main portion of the diaphragm, with its axis at right angles to the plane of the diaphragm and with a vertex angle of less than 100 degrees such that the free point lies within the cone.
Patent GB-1207684-A (GB)
Title: Circular knitting machines
Inventor: LOMBARDI VICTOR JOSEPH
IPC: D04B15/24
Filed: 1967-09-25
Abstract: 1,207,684. Knitting-machines. V. J. LOMBARDI. 25 Sept., 1967 [19 June, 1967], No. 22725/70. Divided out of 1207682. Heading D1C. In a circular knitting machine at least one annular channel 69 is formed in a surface of the cylinder 20, said annular channel having upper and lower bevelled edges 70. The annular channels which are provided for heat dissipation during manufacture and operation can act also to lubricate the knitting elements and may be provided on either the inside or outside or both vertical surfaces of the cylinder.
Patent GB-794316-A (GB)
Title: Improvements in wire drawing machine
IPC: B21C1/14
Filed: 1956-07-23
Abstract: 794,316. Drawing wire. SYNCRO MACHINE CO. July 23, 1956 [July 21, 1955], No. 22736/56 Class 83 (4). In a capstan block for a wire drawing machine a cooling fluid passage 30, Fig. 1, through the driving-shaft 28 connects with a chamber 101 in a head 42 from which the fluid is discharged to the inner face of the skirt 58 through radial passages 52. Easy access to the chamber 101 is provided by a cover-plate 68 attached to the head 42 by bolts 70. The capstan skirt 58 has ribs 66 to increase the heat transfer and is attached by bolts 56 to the head 42 and readily removable for repair &c. The head 42 is locked on the shaft 28 between a nut 46 and a flange 36 and is rotatably held by a key 100. Access of cooling fluid to the bearing 20 is prevented by a cup 22 bolted to the base 10 and telescoping with a skirt 44 on the head 42. Cooling air supplied through a pipe 86 and port 88 is directed over the external surface from an annular chamber 103 through a radial passage 90. Suction of water into the air stream is prevented by allowing free access of air through a port 16 to a chamber 18 under the flange 60 of the capstan skirt 58.
Patent GB-222858-A (GB)
Title: Electro-pneumatic hammer
IPC: B25D9/08
Filed: 1924-09-26
Abstract: 222,858. Guenee, A. C. J. Oct. 6, 1923, [Convention date]. Percussive hand tools.-In a hammering device provided with a striker 4 which is driven outwards by the expansion of fluid under pressure and drawn back by the action of an electromagnet, a magnet 10 is first energized and moves a valve 6 against a spring 11 so as to bring ports 7, 9 into register and admit pressure fluid to drive the striker forward. At the moment when the striker has rebounded from the anvil block 20 a second magnet 13 is energized and opens exhaust ports 14 by drawing down a valve 12 and at the same time the magnet 13 pulls back the striker. If the anvil block is not pressed on the work, it descends and closes a port 19, forming an air cushion to prevent damage by an idle blow. A spring may be added above the anvil block. Alternating current may be used of a higher frequency than that of the striker, being distributed through a suitable rotating switch.
Patent GB-331408-A (GB)
Title: Improvements in or relating to motor omnibuses
IPC: B62D31/02
Filed: 1929-07-24
Abstract: 331,408. Voran Automobilbau-Akt.- Ges. Feb. 25, 1929, [Convention date]. Motor forecarriages.-The body a is of sheet metal and carries the rear wheels without the interposition of chassis or axle. The engine d and controls are carried by a. forecarriage, the rear of which is bolted to the front of the body. For assembly purposes the carriage is fitted with a wheeled truck f.
Patent GB-393128-A (GB)
Title: Manufacture of calcium cyanamide
IPC: C01C3/00
Filed: 1932-08-15
Abstract: Calcium cyanamide is obtained by causing nitrogen to act on finely granulated calcium carbide which is constantly kept in motion, the absorption of nitrogen being started at a relatively low temperature and the temperature being then permitted to increase at a sufficiently slow rate to prevent agglomerating until the final required temperature is attained.  The temperature may be controlled by controlling the supply of external heat or the supply of nitrogen. The initial temperature may be 600-950 DEG  C., which may be increased to final temperatures of 950-1050 DEG  C. in periods of from 6-60 hours.  The increase of temperature may be in steps say of 50 DEG  C., each increase being permitted only after the absorption of nitrogen following the previous increase has ceased.  Catalysts such as calcium chloride, calcium fluoride or calcium cyanamide or inert diluents such as calcium cyanamide or lime may be added to the calcium carbide and the presence or absence of such additions or the granular size of the carbide affects the allowable initial temperature or rate of increase thereof.  The granular calcium carbide may contain some carbide in the form of dust.  The nitrogen may be diluted with inert gases. The process may be carried out by introducing granulated calcium carbide and nitrogen continuously into an externally electrical-resistance heated rotating drum, the carbide moving continuously through the drum, which has a temperature of 780 DEG  C. at the inlet and 1000 DEG  C. at the outlet.  Examples are given. Specifications 107,754 and 123,796, [both in Class 1 (ii), Inorganic compounds, other than &c.], are referred to.
Patent GB-946148-A (GB)
Title: Improvements in or relating to circuit arrangements for x-ray tubes
IPC: H05G1/34
Filed: 1961-06-23
Abstract: 946,148. Circuit arrangements for X-ray tubes. PHILIPS ELECTRICAL INDUSTRIES Ltd. June 23, 1961 [June 28, 1960], No. 22835/61. Heading H2H. The electron flow between the cathode 2 and anode 3 of an X-ray tube 1 is controlled by a control electrode 4 supplied with D.C. voltage by a rectifying unit 25. This unit comprises a high-frequency transformer 15, Fig. 2, whose secondary 17 supplies a rectifier 18 charging a capacitor 19 which discharges into a resistor 20 at a rate greater than the rate of applying the control voltage. The inductance of the transformer 15 and the capacitance of a capacitor 16 provide impedance matching of the highfrequency voltage obtained from a generator 12 through a transformer 13 and a high voltage cable 8. The cathode 2 is supplied with low frequency current from the supply 11 through a transformer 5 and blocking circuits 21, 23 and 22, 24 prevent the high frequency voltage reaching the winding 9 and the cathode 2, the low frequency current being blocked from the highfrequency circuits by capacitor 16 and another associated with transformer 13. The transformer 15 may be tuned to the high frequency supply by a series or parallel resonant circuit.
Patent GB-643518-A (GB)
Title: Improvements in or relating to transducers
IPC: H04R11/00
Filed: 1947-08-19
Abstract: 643,518. Telephone instruments. WHEELER INSULATED WIRE CO., Inc. Aug. 19, 1947, No. 22974. [Class 40 (iv)] A transducer comprises an armature 16 with one end secured between two permanent magnets 8, 10 of opposite adjacent polarity and the other end extending through an air gap 18 between polepieces 12, 14 fitted to the ends of the magnets. As shown, the armature is encircled by a coil 22 and has its free end connected by a driving rod 24 to a diaphragm 6 fitted in a base 4. The magnet assembly and the base are secured together by a rivet 28. For sound-powered operation the armature is centrally-located in the air gap. The transducer may be adapted for battery-energized systems by biassing the armature towards one of the polepieces.
Patent GB-449217-A (GB)
Title: Improvements in or relating to toilet paper rolls
IPC: A47K10/40
Filed: 1935-08-17
Abstract: 449,217. Packages. BARON, B., 231, Strand, London.-(Metaux Blancs Soc. Anon. ; 90, St. Johannvorstadt, Basle, Switzerland) Aug. 17, 1935, No. 23166. [Class 94 (i)] [See also Groups I and VI] The inner surface of the hollow core b of a roll of toilet paper is provided with an airpurifying substance e, and the core is airtightly closed at both ends. The closing cans may take the form of a flat disc d or a disc s forced into the core by a ring R which may have a tapered end e. Further, the outer surface of the core may also be provided with an air-purifying substance. The whole may be enclosed by means of end discs m, Fig. 3. with bent-up edges which are joined by a circumferential wrapper i, or by a wrapper, of which the ends are folded over the sides of the roll and are covered by discs. After the paper has been removed, the core may be used for disinfecting the surrounding atmosphere.
Patent GB-973033-A (GB)
Title: Improved method for the chemical cleaning of textiles
IPC: D06F43/00
Filed: 1961-06-27
Abstract: In a method for the chemical cleaning of textiles by means of an organic solvent-cleaning liquor, e.g. of tetrachloroethylene, a quantity of water exceeding the usual content of water of O.2 to 2 grams per litre by a multiple of more than 10 up to 50 times is added to the solvent-cleaning liquor and during the cleaning operation an air current is blown through the treatment vessel.
Patent GB-928835-A (GB)
Title: Composition of matter suitable as a curing catalyst for epoxy resins
IPC: C08G59/40
Filed: 1961-06-28
Abstract: Curing catalysts for the polyglycidyl ethers of polyhydric phenols or alcohols or of phenolaldehyde novolaks comprise (a) 1-2 mols. of (i) polyborate esters of the formula:- <FORM:0928835/IV(a)/1> where the free valences are satisfied by either R, which is a polyhydric alcohol having 2 hydroxyl groups removed, or by R1 which is an alcohol having 1 hydroxyl group removed, or of (ii) borate esters of the formula:- <FORM:0928835/IV(a)/2> where R is alkyl, cycloalkyl or aryl, and (b) 1-3 mols. of a compound having the formula:- <FORM:0928835/IV(a)/3> and R1 and R11 are H, alkyl, cycloalkyl or aryl.  Long lists of suitable compounds are given, the following being used in the examples:-(a) trihexylene glycol biborate and tricresyl borate, and (b) tri(2-aminoethanol)-, tri(2methylaminoethanol)- and tri(2-dimethylaminoethanol) borate. Optional additives mentioned are glass fibres, wood flour, SiO2, TiO2, ZrO2, zircon, mica graphite, calcium silicate, phenolic resins, polyglycol maleates, alkyd resins, toluene, ethylene glycol monoethyl ether, and methyl isobutyl ketone.  Uses: Particularly electrical insulation (e.g. transformers), and laminates (e.g. kraft paper). Specification 776,213 is referred to.