baber/WOPTO huggingface dataset:
Patent GB-719314-A (GB)
Title: Improvements in or relating to process for the preparation of 1-para-nitrophenyl-2-dichloroacetamidopropane-1,3-diol
Filed: 1951-11-22
Abstract: 1 - p - Nitrophenyl - 2 - dichloroacetamidopropane-1 : 3-diol is manufactured by reacting methyl dichloroacetate with 1-p-nitrophenyl-2-aminopropane - 1 : 3 - diol in a solvent comprising essentially methyl alcohol (preferably substantially anhydrous) at a temperature between 5 DEG  C. and the boiling-point of the reaction mixture.  The methyl dichloroacetate may be produced in situ by adding in place thereof another alkyl dichloroacetate which on heating undergoes alcohol interchange with part of the methyl alcohol.  After the reaction, the desired product is conveniently recovered by precipitation with water.  Examples describe the acylation of the l-#Y-, dl-#Y-, l-reg.- and dl-reg.-forms of the aminodiol, and of the mixture of all four isomers.  In the case of the l-#Y-compound, comparative results with no solvent and with acetone, ethanol, n-propanol, tert.-butanol, 1 : 5-pentanediol, ethylene glycol and triethylene glycol are tabulated.  Specifications 652,273 and 652,275 are referred to.
Patent GB-952649-A (GB)
Title: Process for the production of eupolyoxymethylenes
IPC: C08G2/00
Filed: 1961-07-28
Abstract: Polymerizing anhydrous formaldehyde or its low polymers using perchloric acid, periodic acid and/or salts of these acids, alone or together as catalysts. The polymerization may be carried out in the molten state e.g. when polymerizing trioxane or in the presence of a solvent e.g. a benzine fraction. Other specified catalysts are potassium periodate and perchlorate. Substances which improve the properties of the product e.g. plasticizers, stabilizers, fillers such as glass fibres, slag wool, carbon black, aluminium oxide, zirconium and titanium oxides and silicon dioxide may be added to the polymerization mixture.  The polymer may be stabilized by acylating e.g. with aliphatic or aromatic carboxylic acid anhydrides e.g. of acetic and benzoic acids or by etherification using methyl chloride or ethyl chloride in the presence of alkalis. An after treatment with ketenes may also be used.
Patent GB-468430-A (GB)
Title: Improvements in or relating to stiffened textile fabrics and articles made therefrom
IPC: D06M17/06
Filed: 1935-10-05
Abstract: Narrow strips formed by slitting a thin film of polyvinyl acetate or other synthetic resin may be formed into or incorporated in woven or knitted fabrics.
Patent GB-520573-A (GB)
Title: Process for the manufacture of basic condensation products
IPC: G03C1/835
Filed: 1938-10-13
Abstract: 520,573. Condensation products. GASPAR, B. Oct. 13, 1938, No. 27594/39. Divided out of 29072/38. [Class 2 (iii)] Basic products are prepared by condensing formaldehyde or its equivalents with dicyandiamide and a nitrogenous base such as aniline, o-toludine, o-anisidine, melamine, methylamine or ammonium chloride in the presence of sufficient acid to form a salt of the condensation product. Suitable equivalents of formaldehyde include polyoxymethylene, methylene iodide, methylol and monochlorodimethylsulphate. The condensation may be effected in any order, intermediate products being condensed with other raw material ; intermediates referred to including anhydro-p-aminobenzyl alcohol, methylene dianiline, anhydroformaldehyde aniline, and formaldehyde-amine condensates. In examples: (1) aniline hydrochloride is (7) methylamine and dicyandiamide are heated in the presence of hydrochloric acid and the product, in solution in aqueous hydrochloric acid, is reacted with formaldehyde ; (8) dicyandiamide, trioxymethylene and ammonium chloride are reacted. The products may be used for precipitating or fixing soluble acid compounds such as dyes or dye-forming substances ; in the manufacture of coloured lacquers. varnishes, plastics and films, in dyeing and printing textiles, in the manufacture of lakes, pigments or printing colours, in the photographic industry or in the preparation of coloured spinning solutions. The products when heated in the dry state yield residual products having similar properties.
Patent GB-276033-A (GB)
Abstract: 276,033. I. G. Farbenindustrie Akt.- Ges. Aug. 16, 1926, [Convention date]. Fungicides for treating seeds consist of a copper salt mixed with solid caustic alkali and a tartrate. The salts used are preferably anhydrous and other fungicides, wetting agents, or other materials may also be added. According to an example a mixture contains anhydrous copper sulphate, anhydrous Rochelle salt, caustic soda, and sodium chloride. Reference is made to the prior use of copper sulphate in ammoniacal solution for steeping seeds. Specifications 1741/00, [Class 5, Agricultural appliances, Farmyard &c.], and 271,480 are referred to.
Patent GB-408012-A (GB)
Title: Improvements in or relating to machines for grinding, polishing and marking safety razor blades
IPC: B24B3/48
Filed: 1932-10-05
Abstract: 408,012. Making safety-razor blades. BASSAT, H., Ohligs, Solingen, Germany. Oct. 5, 1932, No. 27663. [Class 60.] Cutting edges, shaping and treating ; guides and rests.-In a machine for grinding, polishing, and marking safety-razor blades, the blades x in strip form are first moved alternately above and below grinding rollers 6, 8 to grind both sides of each cutting edge, then passed through a cleaning bath 33, then above and below polishing or honing rollers 47, 48 to finish the cutting edges then between the rollers 53, 54 of a marking or etching device and finally through a neutralizing bath 61. The grinding rollers 6, 8 are mounted on tables 2, 7 respectively, these tables supporting the wheels of an endless band conveyer 13 having pins 14 engaging the previously formed holes in the razor strip. The grinding rollers may be finely adjusted relatively to the strip. If desired the first pair of rollers may act on the top of the strip and the second pair on the bottom, the rollers of each pair being offset from the centre of the strip so that they act on opposite edges. Lateral movement of the strip is prevented by bars 24, Fig. 11. Support against vertical movement of the strip is provided by bars 25 and against tilting movement by wires 26. After passing the first pair of grinding discs the strip is prevented from resting against the bars 24 and passes between bars 27, Fig. 8, having interengaging teeth forming a V-shape slot which is interrupted alternately at the top and bottom. In a modification, Fig. 12, the strip may be guided so that its edge passes into a slot 27<c> between two bars 27. In other modifications guiding rollers may be employed. After leaving the grinding rollers the strip passes through a cleaning bath having nozzles 34 for spraying benzine or other liquid from a pump 36 on to opposite sides of the strip. The blade strip then passes to polishing rollers 47, 48 mounted in a similar manner to the grinding rollers 6, 8. The grinding and polishing rollers may be provided with jackets for the circulation of cooling water. The strip is then drawn by rollers 49, 50, of which the latter has teeth engaging the holes in the strip, to marking or etching rollers 53, 54 driven synchronously with the drawing rollers and supplied with etching fluid by rollers 55, 56 dipping into containers 57, 58. The strip then passes to a cleaning device 61 of similar construction to the bath 33 but supplied with liquid such as paraffin for neutralising the etching fluid. Finally the strip may be wound on a drum.
Patent GB-158968-A (GB)
Title: Improvements in hypodermic syringes
IPC: A61M5/34
Filed: 1919-11-08
Abstract: 158,968. Everett, S. J. Nov. 8, 1919. Syringes.-The nozzle a of a hypodermic syringe is formed with a lateral slot f, extending from near the mouth b to an enlarged part f<1>, in order to facilitate the insertion and removal of the needle g with its soft head g<1>.
Patent GB-868848-A (GB)
Title: Segmental stator vane ring for a compressor or turbine
IPC: F01D9/04
Filed: 1958-08-29
Abstract: 868,848. Turbine and compressor statorblade assemblies. GENERAL ELECTRIC CO. Aug. 29, 1958 [Sept. 16, 1957], No. 27784/58. Class 110 (3). [Also in Group XXII] The segmental stator blade ring of a turbine or compressor is supported in a stator blade casing 2 by circular supporting surfaces 14 formed on ribs 8 and is made of flexible material, the diameter of the ring being larger than that of the supporting surfaces so that after the segments have been cut and inserted into the casing between adjacent ribs, the ring is forced against the supporting surfaces so that the cut edges of the segments abut each other. The diameter of the supported surfaces of the ring are greater than the diameter of the supporting surfaces 14 by an amount equal to the sum of circumferential thicknesses of the cuts divided by #. The stator blades 20 are assembled on the ring before it is cut into segments and the distance d between adjacent blades which are to be separated by a cut is made greater than the distance e between other adjacent blades by an amount c equal to the circumferential thickness of the cut, so that after the segments have been cut and assembled, all the blades are equally spaced. The ribs 8 are of T-shape and the supporting surfaces are formed on flanges 12. The stator blade ring has a pair of off-set'rib portions 24 engaging the supporting surfaces 14. The ring segments are forced against the surfaces 14 by air or gas under pressure in the space 32 outside the ring. In the case of a compressor, the air may be bled from the compressor itself through holes in downstream portions of the rings. Specification 809,811 is referred to.
Patent GB-623754-A (GB)
Title: Improvements in or relating to dehydro-iso-androsterone and process of producing the same
IPC: C07J1/00
Filed: 1946-09-17
Abstract: A slurry of sitosteryl acetate dibromide in glacial acetic (from 5 to 10 parts of glacial acetic acid by weight of sitosteryl acetate dibromide) is treated with chromic acid and sulphuric acid under substantially anhydrous conditions while maintaining the temperature below 20 DEG  C., thereby degrading the side chain. Chromium sulphate crystallises out and may be removed, thus enabling dibromination to be effected by a small quantity of zinc dust.  A detailed example is given.
Patent GB-999271-A (GB)
Title: Improvements in or relating to electrostatic gas-purifying systems
IPC: B03C3/66
Filed: 1961-08-01
Abstract: 999,271. Supply circuits for electrostatic precipitators. HONEYWELL Inc. Aug. 1, 1961 [Aug. 5, 1960], No. 27893/61. Heading H2H. The electrostatic filter of a gas-purifying system has an ionizing section 60 and a particlecollecting section 67 supplied with high voltage D.C. through a transformer 12, rectifiers 30, 32 and capacitors 34, 36, the ionizing electrodes 62 and collector plates 68 being connected by a current-limiting resistor 76 to reduce the possibility of arcing between the collector plates 68, 70. The resistor 76 is shunted by terminals 82, 84 spaced so that should arcing occur in the collector 67, the consequent increase of current through and potential across the resistor 76 causes voltage breakdown across the terminals 82, 84 which further increases the current taken from the lowvoltage supply terminals 22, 24 and produces a perceptible deflection of an ammeter 28 located remote from the filter and high voltage supply 10. To remove the collector 67 from a filter an access door 78 must be opened, which movement opens a mechanically interlocked switch 26 to break the power supply and also moves a mechanically coupled bar 86 to bridge the terminals 82, 84 and so earth the high voltage side of the ionizer 60, collector 67 and capacitors 34, 36. The ammeter 28 also indicates such faults as a shorted or open ionizer, a shorted or open rectifier or a shorted or open filter capacitor.
Patent GB-821785-A (GB)
Title: Improved brake actuator device and brake incorporating the same
IPC: F16D65/46
Filed: 1957-09-04
Abstract: 821,785. Brake adjusters. GENERAL MOTORS CORPORATION. Sept. 4, 1957 [Sept. 27, 1956], No. 27907/57. Class 103 (1). [Also in Group XXV] An adjustable brake actuator for brake shoes comprises a screw 42 having a head 47 for seating on a brake shoe web 49, a sleeve 40 having a threaded bore 33 for screw 42 and a radial flange 43 with a serrated edge 44, a piston 31 slidable in cylinder 30 and on which seats the end 46 of sleeve 40, and a detent member 50 non-rotatably carried by the screw-head and having a resilient arm 57 engaging the serrations 44 to resist relative movement of the screw and sleeve and having a portion 55 capable of engaging the web 49 to prevent rotation of the sleeve relative to the brake shoe. Two such actuators 15, 16 secured to a support 17 on backing-plate 13, are connected by pipe 19 to operate simultaneously, the leading ends 20, 21 of shoes 11, 12 located on plate 13 by spring members 14, engaging the cylinders 30 and the trailing ends engaging screws 42, springs 26, 27 holding the shoes in engagement with the actuators. The detent member 50, Fig. 4, has slotted portions 61, 55 engaging the web 49 and an intermediate portion 51 engaging notches on opposite sides of the screw-head 47, the end 56 having a V-shaped arm 57 to engage one of the serrations 44. A tool is inserted through a hole in the backing- plate, Fig. 3, not shown, to rotate the sleeve 40 to adjust the brake clearance, the arm 57 clicking into the next serration 44 on flange 43.
Patent GB-1098194-A (GB)
Title: Improvements in position control servo systems
Inventor: WESTBURY ROY
IPC: F15B18/00
Filed: 1964-07-07
Abstract: 1,098,194. Fluid-pressure servomotor system. H.M. HOBSON Ltd. July 7, 1965 [July 7, 1964], No. 28010/64. Heading G3P. A positional control servosystem, such as for controlling an aircraft surface, comprises three actuators each of which has two relatively movable members such as pistons 1, 2, controlled by a valve 3 in response to an electrical input signal 10 to a torque motor 4. The pistons 1 of the actuators are rigidly connected to a member 12 carrying the output member 13, while the pistons 2 are connected to a displacement averaging member 14 which has a ball and socket connection with a stationary part. An electrical feedback 6, 7 is fed from the pistons 1, 2 and summed at 8. The pistons 2 abut spring devices 11 and actuate switches 16 or 17 in the event of failure of one actuator, the maximum displacement of a piston as determined by the device 11 being the maximum anticipated disparity between channels as the result of manufacturing tolerances. The provision of the pistons 2 allow the remaining two pistons 1 to position the output 13 in the event of failure of one actuator and the piston 2 of the failed actuator signals this event. In a modification, the cylinders are movable and provide the action of the pistons 2. In a further modification, the pistons 1 are on a common piston rod and the pistons 2 are in separate cylinders hydraulically connected to the main cylinders.
Patent GB-985805-A (GB)
Title: Improvements in fluid valves
Inventor: VARGA OTTO HERMAN
IPC: F16K1/46
Filed: 1960-08-15
Abstract: 985,805. Valves. SEETRU Ltd. Aug. 15, 1961 [Aug. 15, 1960], No. 28113/60. Heading F2V. A fluid flow control valve comprises a seat 12 which co-operates with a movable valve closure member 8 having a closure surface 11. The closure has a groove which receives a sealing ring 18 whose cross-section is substantially D-shaped, square or rectangular and has peripheral lips 30, 31 engaging the bottom of the groove and extending into recesses in the groove. With the valve closed, the main portion of the sealing ring is urged by fluid pressure against one of the side walls of the groove and one of the lips fills its associated recess, depending on the direction of flow. Apertures 33 may be provided to admit fluid pressure to act on the ring and the base of the groove may be vented. The closure surface and seat may be conical, spherical or cylindrical. Specifications 826,936 and 899,283 are referred to.
Patent GB-763541-A (GB)
Title: Improvements in or relating to apparatus for the continuous treatment in vacuo of wire or other strip-like material
IPC: H01G13/06
Filed: 1954-09-29
Abstract: 763,541. Coating by vapour deposition. SIEMENS-SCHUCKERTWERKE. AKT.- GES. Sept. 29, 1954 [Sept. 29, 1953; March 18, 1954], No. 28150/54. Class 82(2) An apparatus for the continuous coating by vapour deposition in vacuo of wire or other strip-like material comprises a high vacuum chamber 1, formed with inlet and outlet slots 4, 5, for the passage therethrough of the material for coating, and intermediate vacuum chambers 2, 3 enclosing slots 4, 5, there being a secondary slot 6, 7 formed in each intermediate chamber to allow material located in the surrounding atmosphere to be continuously passed through the apparatus to emerge into the surrounding atmosphere, the inlet and outlet slots 4, 5 having an " effective slot height" which is less than the mean free path of the gas molecules on either side thereof and the secondary slots 6, 7 having an " effective slot height " equal to that of said slots 4, 5 ("effective slot height " being defined as the unobstructed width of the slot). In a modification (Fig. 2, not shown) a further intermediate chamber is provided containing an electrode for effecting preliminary surface cleaning by glow discharge. The manufacture of metallized paper capacitors and the vapour coating of thin metal foils with conductive or insulating layers, e.g. flexible glass layers for roll-type capacitors, are referred to. It is stated that the apparatus may also be used for the irradiation of a plastic foil, in which case there is located in the high vacuum chamber a source for the radiation such as a radio-active preparation.
Patent GB-1480253-A (GB)
Title: Data entry display terminal
IPC: G06Q20/40
Filed: 1974-06-25
Abstract: 1480253 Selective signalling ADDRESSOGRAPH-MULTIGRAPH CORP 25 June 1974 [26 June 1973] 28198/74 Heading G4H A display terminal comprises a main memory feeding a display memory via character bitlength reducing means in response to a display command, the display memory feeding only the last D characters entered therein (D being more than one) to display means with at least D positions controlled so that the last of the D characters is displayed in the first position and the first is displayed in the Dth position. The disclosure is essentially as in Specification 1,480,251 which is referred to.
Patent GB-1196302-A (GB)
Title: Fluid-Tight Pressure Regulating and Reducing Valve intended for the Stabilization of Ballistic and Spatial Devices
Inventor: GANDILLOT FRANCOIS
IPC: B64G1/26
Filed: 1967-06-19
Abstract: 1,196,302. Valves. NORD-AVIATION SOC. NATIONALE DE CONSTRUCTIONS AERONAUTIQUES. 19 June, 1967 [20 June, 1966], No. 28278/67. Heading F2V. A gas pressure regulator has a high pressure inlet O 1  connected by ball valve V 1  to a low pressure chamber P 2  which, in turn, is connected to exhaust chamber P 3  by a ball valve V 2  which seats on a plate 21 supported by a spring R 2  and bellows M 1 , M 2  which define chamber P 3  and a further chamber P 4  which is either sealed, as shown on the left, or open to ambient pressure through orifices O 4 , O 3  as shown on the right. A loose push rod e, fixed abutments b 1 , b 3  and an abutment 6 3  formed by spring R 2  when it is fully compressed, effect opening and closing of the valves in response to flexure of the bellows to maintain a predetermined pressure in chamber P 2 . The Specification discloses optimum dimensions, spring strengths and pressures for operation of the regulator under conditions of extremely low ambient pressure e.g. in rocketry. Valves V 1 , V 2  are similar to that disclosed in Specification 1,166,117.
Patent GB-853840-A (GB)
Title: An apparatus for decapitating a boiled egg
IPC: A47G19/28
Filed: 1959-08-19
Abstract: 853,840. Egg toppers. HEDOUIN, M. A. M. Aug. 19, 1959 [June 15, 1959], No. 28284/59. Class 28 (2) An egg placed in a frusto conical support 7 is topped by hand rotating a cap 16 lowered on the egg until an attached annular saw contacts and cuts off the top. The cap contains an annular guide 11 which has tabs 12 fitting into slots 13 in the cover 10 to form a bayonet joint with the upper part 1 of the body which slides down on the tubular part 3 of the attached stand 4. The cap carries peg 18 fitting into holes 19 in the saw 15. The cover 10 with its cap 16 are pivoted at 9 to.open up to allow the egg to be placed inside. For smaller eggs a lower frusto cone 8 is provided.
Patent GB-1421940-A (GB)
Title: Braking mechanism for hoists
IPC: B66D5/28
Filed: 1973-06-14
Abstract: 1421940 Winches FULLERTON HODGART & BARCLAY Ltd 12 June 1974 [14 June 1973] 28417/73 Heading B8B [Also in Division F2] The invention provides a fail safe braking mechanism for a hoist incorporating two interconnected drums 1, 2 and two hoisting cables are wound around each drum. The braking mechanisms comprises a brake 3, 4 for each drum 1, 2 and a biasing means for each brake, e.g. weights 7, 8, urging the brakes to move to the brakes applied state and a fluid pressure thruster means 9, 10 for each brake 3, 4 operable in opposition to the respective biasing means to move the brakes to the off state. A two-way brake control valve 17, 18 is provided for each thruster means 9, 10 the valve being operable to connect the associated thruster means alternatively to a pipe 21, 22 to which a fluid pressure supply may be provided and exhaust. The fluid pressure supply to the pipes 21, 22 is controlled by an isolator stop valve means 25 and a bridge pipe 23, having a stop valve 24 located therein, connects pipes 15, 16 leading to the thruster means 9, 10 upstream of the control valves 17, 18, the arrangement being such that when the isolator stop valve means 25 allows fluid to flow to the thruster means, stop valve 24 is closed. As shown the isolator stop valve means comprises a single valve but it may comprise a valve for each control valve 17, 18. The valves 24, 25 are remotely controlled from a position 30 and operated electrically, the valve 25 being closed when de-energized.
Patent GB-503797-A (GB)
Title: Improvements in or relating to pumps for dispensing drinks
IPC: F04B9/14
Filed: 1937-10-19
Abstract: 503,797. Dispensing pumps. COOPER, A. J. Oct. 19, 1937. No. 28464. '[Class 102 (i)] A pump for dispensing liquids comprises a piston 9 fixed by nuts 8, 11 to a delivery pipe 3 carried by a plate 1. The cylinder 12 has a valve 14 and is fixed by screwed rods 31 to a ring 16 carried by rods 17, passing through the plate 1, and secured to a bar 19 connected by links 22 to a lever 23 on a shaft 24 to which the lever 26 is also attached. A spindle 27 is carried by the bracket 25 and has nuts 28 to position a lever 29, to which is attached a stop 30 for limiting the stroke of the pump. The delivery pipe has a curved outlet 4 which is closed by a cover 39 kept in position by a stirrup 40. The cover is removed for cleaning purposes. The plate 1 is secured to a ring 2 by hinged studs 32.