baber/WOPTO huggingface dataset:
Patent GB-875298-A (GB)
Title: Filtration plants
IPC: B01D37/04
Filed: 1959-08-06
Abstract: 875,298. Filters. SULZER FRERES S.A. Aug. 6, 1959 [Aug. 8, 1958], No. 26997/59. Class 46. A filtration plant comprises an open filter bed 1, a discharge passage 5, 25, containing a pump 6 which forms the sole device for automatically regulating the rate of flow of the liquid through the filter bed, an ozonizing device 8, 11 including an ozone mixer head 8 disposed downstream of the pump for sterilising the liquid, a liquid container 9 connected to a connecting line 7 between the pump and the ozone mixer head above the latter, and a return line 12 (12<SP>1</SP>) which leads to a point upstream of the pump and which branches from the container at a height providing a constant rate of flow to the mixer head.
Patent GB-289494-A (GB)
Title: Improvements in and relating to variable speed power transmission gearing
IPC: F16H61/02
Filed: 1926-10-29
Abstract: 289,494. Wilson, K. A. B., (Wilson, C. B.). Oct. 29, 1926. Facilitating changing speed. - An isolating clutch 16, Fig. 1, between the change-speed gear of a vehicle and a tail shaft 12 is operated by an extension arm 25, which oscillates about the pivot axis. of the changespeed lever 24. The arm 25 is secured to the pivot shaft 26 of the lever 24, which shaft slides axially to select by an arm 23, Fig. 2, a guide finger 23<a> moving in a gate 23<b>. A cam 22 is pivoted upon the arm 25 with lost motion between the two pins 27, 28. In neutral, as shown in Fig. 1, the clutch 16 is held out against the pull of spring 29 by cam 22 engaging a bowl 21 on lever 19. To engage a gear pair, the lever 24 moves freely far enough to start enmeshing. The bowl 21 then rides on to an incline 22<b>, which flies back, so that there is a rapid engagement of the clutch 16. The clutch 16 may be a dog clutch, as shown, or a friction clutch.
Patent GB-1430128-A (GB)
Title: Methods of producing decorative bodies of synthetic resin material
IPC: B44F1/00
Filed: 1973-06-06
Abstract: 1430128 Coated articles C PROVENZANO 29 May 1974 [6 June 1973] 27109/73 Heading B2E [Also in Divisions B6 and C3] The surface of a shattered article (i.e. having a craze of random cracks in the surface thereof) formed from an unsaturated polyester resin is coated with an unsaturated polyester resin optionally with a wax, allowed to harden and then sanded down to a smooth finish. The sanded down surface may thereafter be wax polished. The unsaturated polyester resin may contain styrene as a cross-linking monomer.
Patent GB-319767-A (GB)
Title: Improvements in or relating to the manufacture of film embossing rollers
IPC: G03C7/14
Filed: 1929-09-06
Abstract: 319,767. Kodak, Ltd., (Assignees of Ord, P. R.). Sept. 28, 1928, [Convention date]. Embossing - surfaces. - An embossing-roller bearing fine peripheral grooves for embossing a photographic film is made by winding a coil of wire on a temporary support, plating the outside of the coil, removing the inner support, plating the inside of the coil, inserting a hub within the plated coil, and removing the outside plating and wire. A coil of fine copper wire 12, Fik. 4, is wound on a mandrel comprising bevelled core and ring members 4, 6 held together by a spider 8, screw 10, and nut 9, and a thick coating of copper 13 is deposited on the coil. The mandrel and coil are then placed in a holder 14, the space between the wall of the holder and the coating 13 being filled with hard wax. The mandrel is then removed and a thick laver of nickel is deposited on the inner face of the coil. The sharpness of the ridges on the finished roller may be reduced by applying a flush coating of copper to the coil before depositing the nickel. The inner surface of the nickel coating may be turned or ground and a steel shell is then pressed in to form a hub, and the copper coating 13, wire 12, and flush covering of copper, if any,' are removed by acid or partly by turning and partly by acid.
Patent GB-488775-A (GB)
Title: Improvements in view finders for photographic cameras, particularly cinematographic cameras
IPC: G02B23/14
Filed: 1937-10-06
Abstract: 488,775. View - finders. ASKANIAWERKE AKT.-GES. VORM. CENTRALWERKSTATT DESSAU UND C. BAMBERGFRIEDENAU. Oct. 6, 1937, No. 27123. Convention date, Oct. 24, 1936. [Class 98 (i)] A view-finder with an optical system producing a real image of the field of view has an additional optical system for projecting boundary markings of variable dimensions in the image plane of the finder depending on the focal length and the focusing adjustment of the exposure objective. In the form shown, the finder objective 1, Fig. 3, projects a real image into the plane B and a reversal system 2, 3, or a reversal prism produces an upright image in the plane B<1> observed through an eye-piece 4. An additional objective 5, of short focal length, projects into the plane B an image of a stencil 6 through which light is passed to form an illuminated frame or bright angles. The objective 5 and stencil carrier are coupled by mountings 8, 9, driven by worm gearing on a shaft 12 operatively connected to the objective adjusting means or camera extension rack 13 and knob 14. The knob adjustment displaces the objective and stencil to vary the degree of magnification.
Patent GB-632293-A (GB)
Title: Improvements in or relating to dynamo electric machines
IPC: H02K23/46
Filed: 1945-10-17
Abstract: 632,293. Dynamo - electric machines. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 17, 1945, No. 27132. Convention date, Oct. 28, 1944. [Class 35] In a drooping characteristic generator or a motor an auxiliary magnetic member carrying a series winding extends between the junctions of two adjacent poles with the yoke. In the form shown, the split pole generator has saturated main polar projections 2, 3 and unsaturated auxiliary - projections 4, 5 carrying coils 12-15 connected between auxiliary brush 11 and a main brush, while the coil 23 on member 20 is in series with opposing coils 16, 17 on the auxiliary pole members. Coils 16, 17 may be omitted. In another form without auxiliary brushes and two pole-pieces only, one carries a series coil and the other a shunt or separately excited coil or both, the series coil opposing the other or others.
Patent GB-519207-A (GB)
Title: Improvements in and relating to the treatment of keratincontaining fibres
IPC: D06M11/60
Filed: 1938-09-17
Abstract: 519,207. Curling fibres ; waving hair. CHAMBERLAIN, N. H., and MACDONALD STEAM WAVING, Ltd. Sept. 17, 1938, No. 27165. [Class 15 (ii)] [Also in Groups VIII and XIV] A process for the permanent waving of hair or other keratin containing fibres of the kind in which the fibre, wound on a curler, is treated with heat in the presence of moisture and a volatile alkali, is characterized in that a dry powder capable of forming a volatile alkali under the influence of heat and moisture is incorporated in a sachet to which water or an aqueous solution of a non-volatile alkali is applied, e.g., by dipping prior to application to the curled fibre. The sachet may comprise a sheet 1 of waterproof paper folded at 2, a liner 3 of cellulose acetate sheet, oiled silk, or other waterproof material, a pocket 4 of absorbent material for containing the chemical, and a flap 5 of absorbent material which, when used, may be dipped in water and folded over the pocket 4. Materials suitable for use comprise ammonium bicarbonate, ammonium carbamate, ammonium borate, ethylamine carbonate, dimethylamine bicarbonate and metallic nitrides such as magnesium nitride.
Patent GB-1507490-A (GB)
Title: Method of separating products of different density and apparatus for carrying out this method
IPC: C09D177/00
Filed: 1975-06-27
Abstract: 1507490 Wet separating M TISSEAU 27 June 1975 [28 June 1974] 27231/75 Heading B2H  A method of separating a mixture of materials of different densities comprises adding the mixture to one end of an elongate vessel 9 and injecting a liquid into the lower part of the vessel to produce an ascending current whose speed of flow increases with increasing distance from the lower part of the vessel so that the lighter material only is entrained by the current. In the embodiment shown in Figs. 1 and 2, a mixture of PVC, paper and polyethylene is introduced at 16 into a vessel 9 divided into compartments 14 by plates 13, the cross - sectional area of each compartment decreasing from the bottom to the top. The lower part of the vessel 9 is provided with a screw conveyor 10, a perforate trough 18 and a plurality of ducts 21 through which liquid is injected into the vessel. As the mixture is moved along the trough 18 by the conveyor 10, the ascending currents entrain the paper and polyethylene and carry them to a gutter 23. From here the liquid is returned to the ducts 21 after the removal of the solids by a filter 26. The PVC is removed from the vessel 9 by a screw 31 and is dried by hot air supplied by blowers 35 and 40 and heaters 36 and 41. In the embodiment shown in Fig. 3, the separation vessel 42 is provided with an inclined longitudinally extending duct 46. The ligther material flows along the wall 46c of the duct to a discharge weir (47) at the end of the vessel 42, and the heavier material remaining on the perforate base 43 moves therealong to a weir (48). The base 43 may be inclined or horizontal. In the latter case, flaps (53) are mounted just above the base to direct the ascending currents so that they assist the movement of the material along the base, Fig. 5 (not shown). A plurality of separating vessels may be arranged in series and interconnected so that the liquid currents have progressively increasing or decreasing speed from one vessel to another.
Patent GB-1006471-A (GB)
Title: Nuclear reactors
Inventor: LONG EVERETT
IPC: G21C1/12
Filed: 1963-07-10
Abstract: 1,006,471. Reactors. ENGLISH ELECTRIC CO. Ltd. July 9, 1964 [July 10, 1963], No. 27291/63. Heading G6C. A reactor of the type comprising a pressure vessel 10 containing a moderator core 11 (graphite), containing nuclear fuel, a heat exchanger 16 to transfer heat from a coolant heated by the fuel (gas) to a secondary coolant (water, steam), and a pump for closed circuit circulation of coolant between the heat exchanger and core, is characterized in that a portion of the coolant is heated by some of the fuel to a higher temperature than the remainder of the coolant, heated by the remaining fuel, and the heat exchanger includes a section which receives only the coolant at higher temperature, cools it to the temperature of the remainder whereon it is joined by the remainder for cooling of the entire coolant circulated. Thus channels 12a which constitute 5-19% of the total have stainless steel clad uranium oxide fuel elements which heat gas to 600‹ C. and pass it via plenum tank 15 to section 19b-19c of the heat exchanger. The remaining channels 12 contain uranium in magnesium alloy cans and heat coolant to 400‹ C. This gas is fed to the point 19c in the heat exchanger, at which point the first portion has reached this temperature.
Patent GB-787696-A (GB)
Title: Improvements in or relating to co-axial cable transmission systems
IPC: H04B3/46
Filed: 1955-09-26
Abstract: 787,696. Two-way transmission. SIEMENS & HALSKE AKT.-GES. Sept. 26,1955 [Sept. 24, 1954], No. 27364/55. Class 40 (4). In a wide-band transmission system a coaxial tube is provided for each direction of working between two terminal stations and a third coaxial tube is provided as a standby for service in either direction. Coaxial tubes 1-3 from terminal E pass through a repeater station Z wherein V2 and V4 are the normal " go " and " return " repeaters, The spare coaxial tube 3 is connected to the transmitter and receiver via normally inoperative amplifiers V5 and V6 respectively and at the repeater Z to amplifiers V7 and V8, both of which are normally energized. In the event of the failure of, say, coaxial line 1, amplifier V5 is supplied with H.T. and H.T. is withdrawn from all amplifiers at intermediate stations corresponding with V8. Change-over may be by switches or plugs and, if desired, the normal terminal amplifiers VI, V3, if satisfactory, may be retained in service. Remote control of the unattended repeaters and the distant terminal may be effected by direct current as a result of a single switching operation.
Patent GB-1517083-A (GB)
Title: Method of manufacturing shaped articles from crystalline acrylonitrile polymers and copolymers
IPC: B29C39/00
Filed: 1976-07-01
Abstract: 1517083 Highly permeable implant CESKOSLOVENSKA AKADEMIE VED 1 July 1976 [14 July 1975] 27398/76 Heading A5 [Also in Divisions B5 and C3] A melted thermo reversible gel (formed by keeping a solution of polyacrylonitrile ammonium persulphate and urea mononitrate in 65% HNO 3  for several days to form a multiblock copolymer then pouring the gel into DMSO at 110‹C to give an 8% solution of the polymer which on cooling to 77- 85‹C gelatinised) was mixed with a steroid hormone (7 parts hormone to 1 part copolymer (dry)), the mixture partially dissolved in DMSO and filled into a thin walled polythene tube. The tube and contents then cooled to below the gelation temperature of the sol cut longitudinally and the core washed in water to remove the solvent. The implant formed is useful for the controlled release of the hormone.
Patent GB-983396-A (GB)
Title: Method of making chip board and apparatus for use in the method
IPC: B27N1/00
Filed: 1962-07-17
Abstract: In the semi-continous production of chipboard by intermittently feeding two streams of glue-coated wood particles into separate compartments, thereby forming inner and outer layers, and hot pressing the layers together, each stream is formed by treating a uniform mixture of fine and coarse wood particles having a constant particle size distribution with a constant proportion of an aqueous solution of ureaformaldehyde resin.  The constant particle size distribution is obtained by forming fractions of particular ranges of particle sizes and combining in a particular proportion by volume. Separate fractions may be wetted, combined and dried, and then formed into further fractions.  The degree of drying and mixing may be checked by weighing charges before gluing.  Shavings produced by planing the chipboard before cooling and dust produced by grinding the chipboard after cooling may be recycled to the process. A detailed process for utilizing a number of kinds of wood, bark, and preformed shavings and dust is given.
Patent GB-734924-A (GB)
Title: Improvements in or relating to modified ethyl cellulose and its method of preparation
IPC: C08B11/193
Filed: 1951-11-23
Abstract: Alkali cellulose is reacted with ethylene oxide at 20-80 DEG  C., preferably in a system in which the ratio by weight of sodium hydroxide: cellulose is between 0.25 : 1 and 0.5 : 1 and the water: cellulose ratio is between 0.7 : 1 and 2 : 1, to give a degree of substitution between 0.3 and 0.9 mols per anhydroglucose unit, and the hydroxyethyl cellulose so produced is reacted with excess ethyl chloride at 95-160 DEG  C., in a system in which the sodium hydroxide: hydroxyethyl cellulose ratio is between 2 : 1 and 10 : 1 by weight and the water: hydroxyethyl cellulose ratio is between 1 : 1 and 8 :1, to give an ethoxyl degree of substitution of 2.6 to 2.9. The ethyl-oxyethyl cellulose produced has a high aliphatic hydrocarbon tolerance.  The ethyl chloride required for the second step of the process may be present during the first step, along with the ethylene oxide, but the temperature and alkali concentration are such that no ethylation takes place. The second step may be carried out by increasing the alkali concentration by adding strong caustic soda solution, or dilute caustic soda together with solid caustic soda, to give the required ratios between caustic soda, water and hydroxyethyl cellulose, and then raising the temperature.  Since alkali is consumed in the second step it is preferred to add caustic soda gradually, during the course of the reaction, and the ethyl chloride also may be added gradually, at about the rate at which it is consumed.  In an example, 400 parts of chemical cellulose are steeped in excess 20 per cent sodium hydroxide for 1 hour and pressed to a weight of 1344 parts.  The alkali cellulose is shredded and then agitated in an autoclave with 120 parts of ethylene oxide, 136 parts of diethyl ether and 1600 parts of ethyl chloride for 5 hours at 60 DEG  C.  The product has a hydroxyethyl degree of substitution of 0.38.  Then 2090 parts of 49.7 per cent sodium hydroxide, 976 parts of sodium hydroxide pellets and 80 parts of ether are added to the autoclave and the mixture is agitated for 5 hours at 130 DEG  C., whereby 2.64 ethoxyl groups are introduced per anhydroglucose unit. The reaction mixture is neutralized with acetic acid, wet milled and washed free of salts, and the resulting ethyl oxyethyl cellulose is dried.
Patent GB-1488469-A (GB)
Title: Process and reagent for the quantitative determination of lactate
IPC: C12Q1/52
Filed: 1976-07-02
Abstract: 1488469 Lactate determination BOEHRINGER MANNHEIM GmbH 2 July 1976 27658/76 Heading G1B Process for the quantitative determination of L-lactate in a sample by reaction with nicotinamideadenine-dinucleotide (NAD) in the presence of lactate dehydrogenase (LDH) with the formation of reduced nicotinamide-adenine-dinucleotide  (NADH) and pyruvate, reaction of the latter with glutamate in the presence of glutamate-pyruvatetransaminose (GPT) with the formation of alanine and an α-ketoglutorate in alkaline buffer solution and measurement of the NADH formed to indicate the amount of L-lactate in the sample, wherein the reaction with the glutamate is carried out in the presence of at least 0.4 mol/litre of carbonate or bicarbonate. A suitable reagent for the above process comprises LDH, GPT, NAD and glutamate and is characterized by a content of 0À40-1À2 mol/litre of a carbonate buffer of pH 9À5-10À5. The reagent may also contain sodium azide. The process may also be used to determine the L-alamine content in a sample.
Patent GB-967311-A (GB)
Title: Improvements relating to locks
Inventor: JAMES REGINALD
IPC: E05B13/10
Filed: 1959-08-13
Abstract: 967,311. Remotely controlled fastenings; sliding belts. LOWE & FLETCHER Ltd. Nov. 9, 1960 [Aug. 13, 1959], No. 27672/59. Heading E2A. A door lock comprises a movable latch bolt driving member 23 adapted for -connection to latch bolts and operable by a pair of handles 12, 13 which when the lock is fitted to the door, are located on opposite sides of the door, a key-operated lock 14 mounted in the handle which is to be secured to the outside of the door, which can be operated so as to lock or free the driving member 23, and manually operable means 15 carried by the other handle for locking or freeing the latch-bolt-driving member 23 independently of the key-operated lock 14. As shown, the invention is applied to a door 10 of the "up-and-over" type. The handles 12 and 13 include portions of reduced diameter which are retained in boss portions 17 of outer and inner rose plates 18 and 19, the latter being secured by screws which are inserted through the inner rose 19 to engage blind tapped sockets 20 in the outer rose 18. The key-operated lock 14 is coupled through a rod 47 to the inner end of a cam 36 which is secured to a manually operated locking handle 15 associated with the inner handle 13. The bolt-operating member 23 is non-rotatably secured to a reduced diameter portion of the shank 16 of the inner handle 13 and is pivotally connected to rods 11, the free ends of which are engageable in sockets or keepers on the door frame. The cam 36 extends through an axial bore of the shank of handle 13 and is rotatable in one direction by the key-lock or by the handle 15 to engage a pair of bolts 33, against spring loading, with a pair of recesses 41 formed in the inside face of a boss 17 of the rose 19, and is rotatable in the other direction whereby to allow retraction of the bolts 33 from the recesses 41. The inner ends of the handles 12 and 13 are coupled together by a sleeve 28, so that in the retracted position of the bolts 33, the bolt-operating member 23 is rotatable in either direction by either of the handles 12 or 13.
Patent GB-658399-A (GB)
Title: Improvements in or relating to electrolytic (wound) condensers
IPC: H01G9/06
Filed: 1949-10-28
Abstract: 658,399. Electrolytic condensers. PHILIPS ELECTRICAL, Ltd. Oct. 28, 1949, No. 27692. Convention date, Nov. 1, 1948. [Class 37] An electrolytic condenser, which may be a wound twin unit 1, is held resiliently by a curved blade-spring 3, e.g. of hardened aluminium, against the inner wall of a surrounding case 2. The case 2, which is also preferably of aluminium, is closed by an insulating plug 4 and rubber gasket 7, leads 9, 10 being connected to the two anodes of the unit 1 and a lead 8 to the common cathode.
Patent GB-244890-A (GB)
Title: Improvements in rotary pumps and blowers
IPC: F04C2/344
Filed: 1924-11-20
Abstract: 244,890. Cleathero, E. T. Nov, 20, 1924. Fixed-abutment type; back-pressure, reducing; packing vanes; discharge and suction pipes and passages for pumps, blowers, and exhausters.- In a rotary pump or blower of the type in which the pistons have outwardly sliding vanes, specially applicable as a combined suction and air-blast pump for automatic feeders for printing machines, a relief port is provided mid-way between. the inlet and outlet ports for allowing the ingress of air on the outlet side of the pump. The pump comprises a casing 1 in which is eccentrically mounted the rotor 2 which carries a pair of sliding vanes 11, 12 out away at their middle parts so as to straddle the driving shaft 3. The vanes have resilient packing pieces 13 to compensate for the eccentricity of the rotor. The pump is connected to a suction chamber 17 associated with the printing machine and provided with a safety valve 18 - - 20, the chamber 17 being exhausted through the port 14. Air is blown out through the port 16. A relief port 15 is provided midway between the ports 14, 16 to admit air ready for expulsion through the port 16. The port 15 reduces the back-pressure of the pump. Movable - abutment type; compensating for irregularity of flow.-A rotary pump, suitable for forcing viscous fluid through small holes in the manufacture of artificial silk, of the type in which a pair of eccentrically mounted pistons set at a phase difference of 180‹ to each other revolve each in a cylindrical casing with a common outwardly sliding abutment which separates the inlet and outlet ports, comprises two thick flat plates screwed together and gripping between them a thin plate having two cylindrical holes in which the pistons revolve. The plates A, B are secured by screws o and enclose the plate C with the cavities a, a' in which rotate the pistons e, e<1>, each having a ring g, g<1>. The pistons are eccentrically mounted on shafts c, c' driven by gearing M, d, d' and co-operate with the common abutment b which separates the inlet ports m, n, and the outlet ports r, s. A bye-duct leads from the main outlet duct q into a removable glass chamber W clamped to the pump by the screw u and frame t. This chamber collects the last particles of air which remain as bubbles in the viscous liquid and also regulates the flow by eliminating the last oscillations.