baber/WOPTO huggingface dataset:
Patent GB-1007349-A (GB)
Title: Improvements relating to electrophotography and electro-photographic materials
IPC: G03G5/07
Filed: 1961-10-12
Abstract: A composition known as methylene urea starch is prepared by suspending starch in an aqueous solution of urea and after allowing the suspension to stand adding aqueous formaldehyde, maleic anhydride, water, and acetone. After reaction first at 40 DEG  C. and then at 60 DEG  C. the solid product is filtered from the cooled reaction mixture, washed free of formaldehyde with water, the water removed by elution with acetone, and the product then dried.  To prepare starch-N-phenyl carbamate undried rice starch is dehydrated with benzene by azeotropic distillation-water-free benzene is added during the process to maintain constant volume. After the drying phenyl isocyanate is added and the mixture refluxed.  The product is then filtered off, washed with ethanol, and dried.  Specifications 693,112, 836,148, 836,151, 838,245, 851,218, 853,880, 856,770, 860,560, 883,782, 891,043, 964,871, 964,873, 964,875, 964,877, 964,879, 964,884, 974,871 and 988,362 are referred to.
Patent GB-319167-A (GB)
Title: Improvements in the construction of transformers, choking coils and other parts of wireless apparatus to facilitate assemblage
IPC: H01F27/02
Filed: 1928-12-13
Abstract: 319,167. Feldman, J. Dec. 13, 1928. Transformers. - Inductive components of a wireless set such as transformers or chokes are provided with two sets of fixing lugs, one set 6 lying in a plane parallel to the longitudinal centre line and the other set in a plane at right-angles thereto, in order to facilitate fixing of the components in non-inductive relation to each other. In the case of the transformer shown in Fig. 1, the plane bounded by one set of lugs is not intersected by the plane bounded by the other set so that the set of lugs not used in fixing does not foul the base to which the transformer is fixed by the other set. Where the lugs of one set project into the plane of the lugs of the other set as in Fig. 8, the lugs not required for fixing may be broken off in the fixing operation, or washers may be inserted beneath the lugs used in fixing.
Patent GB-401909-A (GB)
Title: Device for feeding nut blanks to tapping and other machines
IPC: B65G47/256
Filed: 1932-12-30
Abstract: 401,909. Feeding nuts in uniform position. FRIEDMAN, J. H., Tiffin, Ohio, U.S.A. Dec. 30, 1932, No. 36953. [Class 117.] Nuts having a flat and a convex end face are fed to a tapping or other machine by a shoot provided with a selector device which passes those nuts facing in one direction and ejects the others. The device consists of two plates 1, 3, Fig. 2, disposed perpendicular to one another and inclined to the vertical so as to form a narrow ledge 8 and inclined back. The width of the ledge is regulated by set-screws 4, 7. The selector is incorporated in the feedshoot 12, 13, Fig. 1, and the ledge 8 is raised at its leading edge 15 above the shoot 12 so that the nuts are tipped on to one corner on passing on to it. The width of the ledge is insufficient to support those nuts whose rounded sides are towards the back-plate and these are discharged by the shoot 16. A loose plate 11 supported on studs 10 overhangs the back-plate 3 and serves to maintain the nuts on the ledge without obstructing their passage.
Patent GB-619611-A (GB)
Title: Improvements in or relating to electrical frequency controlling devices
IPC: H02P9/04
Filed: 1946-12-16
Abstract: 619,611. Automatic control of frequency ; systems depending on two machines ; dynamoelectric machines. GENERAL ELECTRIC CO., Ltd., and FRIEDLANDER, E. S. Dec. 16, 1946, No. 37014. [Classes 35 and 38 (iv)] [Also in Group XXXVII] A constant frequency supply 19 is obtained from a source 3 of varying frequency, from the rotor 4 of an induction type frequency converter having a rotatable stator 2 supplied by the source 3, frequency responsive means being arranged to control the relative speeds of rotation of the stator and rotot to correct for deviation of output frequency. As shown in Fig. 1, a motor 8 drives the stator at constant speed and the rotor through a variable speed drive 10-12, the speed controlling member 11 of the drive being actuated by a worm 15 operated by a split-phase reversible motor 14 -controlled by a wattmetric type relay 23, 24, which is energized from supply 19 through a constant voltage transformer 7 and which is associated with a resonant circuit 25, 26 tuned to the normal output frequency. At normal frequency the relay contacts are open and motor 14 de-energized, but increase or decrease of output frequency causes a torque to be exerted on the driving system of the relay in such a direction as to start motor 14 running in the appropriate direction to correct the deviation. In a modified arrangement, both rotor and stator of the converter are normally stationary, but are rotatable by separate motors, when frequency correction is necessary, under the control of the frequency responsive relay.
Patent GB-1497167-A (GB)
Title: Dyeing process for dyes containing phosphorus acid groups and compositions for use therein
IPC: C09B62/04
Filed: 1975-09-09
Abstract: 1497167 Reactive dyeing of hydroxyl group containing substrates IMPERIAL CHEMICAL INDUSTRIES Ltd 23 July 1976 [9 Sept 1975] 37069/75 Heading D1B Organic substrates which contain hydroxyl groups are dyed by heating to at least 93C in presence of a water-soluble dyestuff contaming one or more groups of formula in which M is a metal n is 0 or 1, g is 0 or 1, m is 0, 1 or 2, r is 1 or 2, t is 0 or 1, r+t is not greater than 2, and when n is 1, m+t+r+q is not greater than 3, in the presence of a carbodiimide and a salt of ammonia or of a volatile amine. The metal M may be sodium, potassium, lithium or magnesium, cyanamide and dicyandiamide being preferred carbodiimides, methylamine, dimethylamine, trimethylamine, ethylamine diethylamine and triethylamine being preferred volatile amines. Cellulose is dyed or printed by conventional techniques.
Patent GB-1356428-A (GB)
Title: Process for the isolation and purification of tetracycline
Filed: 1971-08-06
Abstract: 1356428 Purification of tetracycline FABRICA DE ANTIBIOTICE IASI 6 Aug 1971 37131/71 Heading C2A The invention comprises a process for isolating tetracycline by means of its insoluble complexes, e.g. iron, calcium, magnesium and organic bases which is characterized in that, in order to avoid oxidative degradation of tetracycline by the prolonged action of atmospheric oxygen, the separation of the complexes is carried out by filtration on a filter press in the presence of nitrogen. Filtration of the complexes is followed by adjustment of the pH to 4 to 5 with oxalic acid and then blocking the cations bonded to tetracycline by anions or known blocking agents such as oxalates, phosphates and ferrocyanides. The tetracycline is purified directly out of the blocked complex after removal of water by dissolving in appropriate organic solvents such as butyl acetate from which it is precipitated in the form of the base or the hydrochloride. The process yields a higher grade product in better yield than that of previous processes.
Patent GB-1078835-A (GB)
Title: Stabilization of sulphur trioxide by radiation
IPC: C01B17/90
Filed: 1965-08-31
Abstract: Substantially anhydrous liquid SO3 is subjected for a predetermined period of time to ionizing radiation of an intensity equivalent to a dose rate of 1.4 x 106 rad/hour or greater for at least 30 minutes to effect stabilization of the SO3. The radiation is preferably electromagnetic radiation.  The preferred source is Cs13+ which is a b  and g  emitter. X-rays and electron beams may also be used as the radiation. The SO3 may be obtained by distilling oleum or by catalytic oxidation of SO2 and the anhydrous product is condensed at 30-40 DEG  C.
Patent GB-1270110-A (GB)
Title: Improvements in or relating to pressing processes
Inventor: CLARKE KENNETH
IPC: B30B15/06
Filed: 1968-08-05
Abstract: 1,270,110. Diaphragm presses; laminating press. IMPERIAL CHEMICAL INDUSTRIES Ltd. 22 July, 1969 [5 Aug., 1968], No. 37304/68. Headings B5A, B5F and B5N. A resilient pressure applying and heating cushion plate for use in a laminating, moulding, or the like press comprises a flexible metal sheet sealed about its periphery to a backing plate, hot vapour being introduced into the interior of the cushion plate during pressing via an inlet and an outlet, the pressure of the vapour being such that it condenses within the plate during pressing. In one embodiment, in which the plate is located as a separate entity between the platens of a press along with the material to be worked, the plate consists of a pair of steel or copper sheets 21 welded to each other and provided with an inlet 22 and an outlet 23 located below the level of the inlet so that condensed vapour may be removed. In a second embodiment, in which the cushion plate forms the press plate itself, a steel sheet 25 is welded to a press plate 24 having an inlet 26 and an outlet 27 and a sloping surface 28, the surface facilitating drainage of any condensed liquid. In a third embodiment (see Fig. 5, not shown) the outlet and inlet, instead of being located in the press plate are located in the steel sheet. Where the plate is to be used as an upper platen, the surface of the press plate need not be inclined and drainage is facilitated by locating the outlet adjacent the surface of the sheet. Alternatively drainage may be effected by using the plates on the slant. The press plates may be used in the lamination of plywood, blockboard, plastics sheets such as P.V.C., or resin impregnated layers.
Patent GB-622299-A (GB)
Title: Improvements in dispensing closures for powder containers and distributors
IPC: A47G19/24
Filed: 1946-12-18
Abstract: 622,299. Powder distributers. TRIGGS, W. W. (Double Duty Products, Inc.). Dec. 18, 1946, No. 37317. [Classes 18 and 66] A dispensing closure for powder blowers comprises a partly flexible member 16 providing an air chamber 17 and a powder outlet 20, a flexible disc or diaphragm 33 disposed below the member 16 and permitting direct communication between the air chamber and the outlet and means whereby the outlet communicates with the interior of the powder container. As shown in Fig. 4, the diaphragm consists of a piece of open mesh fabric which, when pressure is applied to the member 16, allows air to pass into the container and also permits a stream of air to pass through passageway 39 to a discharge tube 22. Alternatively, the disc may be of non- foraminous character, e.g. rubber, and imperforate except for an aperture opposite the discharge tube 22, in which event depression of the member 16 causes the diaphragm to be inwardly flexed, with a consequential increase in air pressure within the container and an opening of the passageway 37. The member 16, which may be made of rubber or like resilient material is clamped by means of its flanges 18, between flanged rings 26, 30, Fig. 2, and secured to the container wall 11 by bending down the flange 31 of the ring 30, the diaphragm 33 being retained in position by projections 38 on the ring 26. To maintain the closure element against rotary movement, a part 35 of the flange 27 of ring 26 is bent downwardly to pierce the wall of a cardboard body 11 or to engage a slot when the body is of metal.
Patent GB-1473144-A (GB)
IPC: F16B5/00
Filed: 1974-07-13
Abstract: 1473144 Brackets for joining panels LISKEY ARCHITECTURAL SYSTEMS Inc 13 July 1974 37323/76 Divided out of 1473143 Heading F2M A bracket 410 for use in clamping together the edges of panels 401a and 401b comprises a strip forming a back 414 and spaced projections 412 defining at least two generally U-shaped recesses. A first one of the recesses being of greater width than a second and the second having an apertured base 416, the bracket being such that the projections defining the second recess may engage within the first recess of a similar bracket. Two such brackets fixed to the edges of adjacent panels 401a and 401b by welding are clamped together by a plate 418 engaging their upper edges and screws engaging in a threaded hole or a captive nut 425 on the bases 416.
Patent GB-360242-A (GB)
Title: Improvements relating to oil fractionation
IPC: B01D3/14
Filed: 1930-12-12
Abstract: <PICT:0360242/III/1> <PICT:0360242/III/2> <PICT:0360242/III/3> <PICT:0360242/III/4> In an oil fractioning tower, of the kind i which condensate flows downwardly over bubble plates in contact with an upward flow of vapours and steam through gas passages of constant area, and fractions are intermediately withdrawn, the velocity of flow of condensate on the plates is maintained constant by increasing the length of the path of the condensate on the lower plates.  Thus on the upper plates 12a, Fig. 4, having gas ports 29 the oil delivered by connections 27a flows in unidirectional path across the plate to connections 27b to the next plate.  On intermediary plates 12b, Fig. 5, baffles 37, 38, 39 cause condensate entering at connection 27a to flow first round the central port 29 and then round the outer ports before reaching the connections 27b. Finally on the lower plates 12c Fig. 6, the condensate entering at the connection 27a is forced by baffles 40, 41, 42 to flow serially between all the ports before reaching the connection 27b.  The fractionating tower is otherwise preferably constructed as described in Specification 270,720, [Class 32, Distilling, &c.], and the maintenance of the substantially uniformity of flow of condensate on the plates permits the caps 30, Fig. 8, to be adjusted to the same height above the base of each tray while providing the same degree of cap submergence on each tray.
Patent GB-507987-A (GB)
Title: Improvements in monolithic structures
IPC: E04B2/56
Filed: 1938-01-05
Abstract: 507,987. Building-construction; slabs. CLAYETTE, H. Jan. 5, 1938, No. 37640. Divided out of 507,929. [Classes 20 (iii), 20 (iv), and 87 (i)] A building is constructed by erecting pillars formed of superimposed pre-cast grooved blocks 10, fitting pre-cast slabs or panels 14 in the grooves 11 of the blocks, filling the space between the panels to a pre-determined height with a material such as sand or soil, and casting stringers 23 on the filling and between the panels. The blocks 10 may be made of concrete and may be hollowed out at 12 for the reception of a suitable filling, such as reinforced concrete. The panels are of the construction described in Specification 507,929, and some of these panels may have apertures 20 through which floor joists 25 are passed. The stringers are reinforced by rods which pass through apertures in the blocks 10. For the construction of windows; the superposition of the panels 14 is interrupted and members 26 having grooves 27, 28, are placed as shown in Fig. 9, to fit over the panels. The members 26 are apertured for the reception of blocks 10 which are employed to form the vertical sides of the window. Blocks 10 having a concrete filling reinforced by rods 30 are also used to form the lintels.
Patent GB-998167-A (GB)
Title: Production of silicon nitride whiskers
Inventor: EVANS CHRISTOPHER CHARLES
IPC: C01B21/068
Filed: 1960-11-03
Abstract: <PICT:0998167/C1/1> Whiskers of silicon nitride are produced by vaporizing silicon powder and mixing the vapour with a nitrogen gas stream in such a manner that the silicon nitride whiskers are formed in a zone displaced from the silicon. Thus oxygen-free dry nitrogen enters at 3 into a horizontal tubular furnace 1 provided with a carbon lining and maintained at 1410 DEG  C. at the inlet end and 1400 DEG  C. at the other end. Silicon powder 5 of not less than 99.9% purity and fine enough to pass through a 300 mesh (B.S.) sieve, is protected in trays 6 by shields 7 from the direct current of nitrogen.  The silicon nitride whiskers are deposited on an expanded substrate e.g. carbon, which substrate is removed, when full of whiskers. For continuous operation provision is made for a continuously replenished supply of silicon and a substrate which is continuously passed through the furnace and removed from the furnace when saturated with whiskers.  These whiskers may be used to reinforce a refractory material matrix. Specification 998,166 is referred to.
Patent GB-1500230-A (GB)
Title: Endotracheal and tracheotomy tubes
IPC: A61M16/04
Filed: 1976-09-13
Abstract: 1500230 Tracheal tube DUPACO INC 13 Sept 1976 [15 Sept 1975] 37808/76 Heading A5R A tracheal tube 10 comprises a liquidinflatable cuff 15 sealed to the tube 10 at anterior and posterior portions 16, 18, the cuff having an inflatated configuration defining a bulbed anterior portion 36 for sealing to the trachea having a diameter D of about 2¢ times the diameter A of the tube, and a tapered posterior portion 38 in liquid communication with bulbed portion 38 and having a maximum diameter C of about 1¢ A and a minimum diameter of about 1 A. This configuration of the cuff allows a redistribution of liquid in response to pressure charges acting on the bulb 36 during the inhalation and exhalation cycles. The cuff is filled by passing fluid along a filling lumen from a reservoir, Figs. 1 and 2 (not shown), a hand-actuated valve being provided for controlling inflation.
Patent GB-1436416-A (GB)
Title: Mine support
IPC: E21D15/44
Filed: 1973-08-09
Abstract: 1436416 Mine roof supports ZAKLADY KONSTRUKCYJNO - MECHANIZACYJNE PRZEMYSLU WEGLOWEGO 9 Aug 1973 [11 Aug 1972 30 Sept 1972] 37852/73 Heading E1P A mine roof support frame is provided with elastic means to accommodate sudden loads, the elastic means being in the form of a rubber plate 13 which is mounted on the roof bar 11, and protected by a steel plate 14 and provided with a large number of holes.
Patent GB-1105252-A (GB)
Title: Improved process for sintering uranium nitride with a sintering aid depressant
IPC: C01B21/06
Filed: 1965-09-06
Abstract: Uranium nitride powder is compacted by mixing it with a powdered uranium intermetallic compound or uranium silicide and an organic binder, pressing the resultant mixture to a green strength and then sintering the green body.  The green body may be heated in a vacuum or in an inert atmosphere, preferably of nitrogen, and the prerferred sintering temperature is 1400 - 1600 DEG C. Specified intermetallic compounds of uranium are UAl2, UAl3, UAl4, UBe13, and specified silicides are USi, USi2, U3Si2, and USi3. The non-uranium component of the intermetallic compound is preferably volatile at the sintering temperature, or this component may be soluble in the UN matrix at this temperature. The preferred binder is a solution of camphor in an organic solvent which is mixed with the powered components, the mixture dried to remove the excess solvent, and the camphor coated particles pressed to produce a compact mass which is then sintered. Compacts produced by the above method may be used as nuclear fuel in high temperature, high power density, nuclear reactors.
Patent GB-935923-A (GB)
Title: A mixing head for use in the production of plastics
IPC: B29B7/74
Filed: 1961-10-24
Abstract: 935,923. Mixing heads. FARBENFABRIKEN BAYER A.G. Oct. 24, 1961 [Oct. 25, 1960], No. 38045/61. Class 86. A portable mixing head for the production of polyurethane foams comprises a cylindrical mixing chamber 3 having a pair of opposed high-pressure injection nozzles 2, a tangential compressed air supply duct 4 and a tangential discharge passage 5 leading to a conical duct 6 opening into a stepped space 7. In this is a supplementary mixing device having an upper part 8 with intersecting grooves 8b which distribute the mixture over the lower part 9 having tangential bores 11 leading into an eddy space 10. The non-rotating mixture then passes through a discharge passage 12 on to the base 14 of a deflector 13, whence radial bores 16 discharge it perpendicularly towards the walls of the discharge passage 15 providing final homogenization. The discharge rate and pore size of the product may be controlled by varying the number and size of the tangential bores 11 in the supplementary mixing device.
Patent GB-855078-A (GB)
Title: Transfer and invert-revert mechanism for glass machines
IPC: C03B9/18
Filed: 1957-12-06
Abstract: 855,078. Glass blowing machines. LYNCH CORPORATION. Dec. 6, 1957 [July 5, 1957], No. 38104/57. Drawings to Specification. Class 56. In a glass blowing machine having an intermittently rotating turret. Three neck rings are provided and these move successively to a blank (parison) station, blow station and take-out station arranged 120 degrees apart around the turret and means are provided for rotating each neck ring between the takeout station and the blank station to invert the neck ring, and between the blank station and the blow station to revert the neck ring, The rotation takes place about horizontal axes lying substantially midway between the top and bottom of the'parisons and is effected by the engagement of gears carried by the rings unit stationary gear sectors.
Patent GB-1472840-A (GB)
Title: Method of separating and purifying glycine
Filed: 1975-09-17
Abstract: 1472840 Glycine SHOWA DENKO KK 17 Sept 1975 [18 Sept 1974 (3)] 38222/75 Heading C2C A method of obtaining glycine from an aqueous solution containing glycine sodium sulphate and monosodium iminodiacetate (e.g. derived from the hydrolysis of glyinonitrile) comprises (a) heating the solution at a temperature ranging between the lower and upper limit temperatures as shown by the lines S and G of the accompanying graph whereby to crystallize out sodium sulphate, (b) filtering off the crystallized sodium sulphate whilst still hot and (c) adding water to the hot filtrate and then reducing the pressure to 10-40 mm. of Hg so as to cause evaporation of water and cooling of the filtrate to 33-40‹ C. whereby to crystallize out the glycine. The mother liquor may be recycled but before doing so sulphuric acid is preferably added to adjust the pH to 1À9-2À9 to precipitate out the iminodiacetic acid. The glycine obtained in step (c) contains some of the monosodium diacetate and may be separated from it by subjecting an aqueous solution of the mixture to electrodialysis with ion-exchange membranes.
Patent GB-1022019-A (GB)
Title: A root-crop harvester
Inventor: REBEROT ADRIEN
IPC: A01B71/06
Filed: 1964-09-21
Abstract: 1,022,019. Root-crop harvesters. SOC. D'ETUDES ET DE CONSTRUCTIONS MECANIQUES DE CORBEIL. Sept. 21, 1964 [Nov. 12, 1963], No. 38500/64. Heading A1F. A root-crop, e.g. beet, harvester comprises two approximately horizontal circular grids 4, 5 disposed rearwardly of plough-shares 3 and rotatable in the directions of the arrows 31, 32. Deflectors 35, 36 are provided to discharge the beet through a passageway 37. The grids are driven by a tractor power take off via shaft 27, chains 26, shafts 21 and gearing 18 and 19. The axles 6 of the grids are supported in sleeves 8 (Fig. 1, not shown) and the grids are adjustable as to distance from and inclination relative to the ground by means of two collars 10, 11 pivotally attached to frame 1 in which collars the sleeves are slidable.
Patent GB-1376290-A (GB)
Title: Thiophosphoric acid esters and thiophosphonic acid esters a process for their preparation and their use as insecticides and acaricides
IPC: A01N57/14
Filed: 1973-08-15
Abstract: 1376290 Thiophosphoric and thiophosphonic acid esters BAYER AG 15 Aug 1973 [16 Aug 1972] 38511/73 Heading C2P The invention comprises compounds of the general formula wherein R is straight chain or branched C 1 -C 6  alkyl, R<SP>1</SP> is straight chain or branched alkyl or alkoxy with in each case 1 to 6 carbon atoms, R<SP>11</SP> is straight chain or branched C 1 -C 6  alkyl or is phenyl, acyl is (C 1 -C 6  alkyl), carbonyl or phenylcarbonyl and X is O or S. They are obtained by reacting a salt in which M is an alkali metal-, alkaline earth metal- or optionally alkyl-substituted ammonium equivalent with a halogen compound of the formula in which Hal is halogen, e.g. Br or Cl. The reaction is preferably carried out in a solvent or diluent. The products have insecticidal and acaricidal properties and may be used as active ingredients in conventional pesticidal compositions.