baber/WOPTO huggingface dataset:
Patent GB-536696-A (GB)
Title: Improvements in or relating to electric switches, with provision against mechanical shock
IPC: H01H50/30
Filed: 1939-12-07
Abstract: 536,696. Electromagnetic switches. GENERAL ELECTRIC CO., Ltd., and CROFT, E. H. Dec. 7, 1939, No. 31723. [Class 38 (v)] A switch substantially unaffected by shock or vibration has two sets of contacts arranged in parallel and balanced in such a manner that any shock either produces no change in the switch or if the switch is open, further separates the contacts and, if the switch is closed, increases the pressure at one break while the pressure is decreased at the other break. In the form shown an electromagnet 5 attracts two tontact-carrying, armatures 15, 16 which move simultaneously in opposite directions. The armatures are pivoted at 13, 14 and connected by a link 31 which also prevents movement by shock. The armatures have counterweights 29, 30. In a modification Fig. 2 (not shown) a single counterweighted armature operates through connected rods a lever carrying two movable contacts. One of these contacts is pivoted on the lever and spring-biassed and engages an immovable fixed contact. The other movable contact is fixed relative to the lever and engages a " fixed " contact that is spring biassed. A shock which would tend to move one of the spring-biassed contacts away from its complementary contact would tend to move the other spring-biassed contact towards its co-operating contact.
Patent GB-1120109-A (GB)
Title: Electric power transmission system
IPC: H02B5/00
Filed: 1966-07-15
Abstract: 1,120,109. Connecting members. WESTING- HOUSE ELECTRIC CORP. 15 July, 1966 [26 July, 1965], No. 31809/66. Heading H2E. [Also in Division H1] In a power transmission system in which a hollow conductive core 22 is supported within a pipe 21 by disc insulators 23, each insulator is formed on a short length of core 22<SP>1</SP> coupled to the main core by conductive metal plugs 43 pressed or welded into the ends of the core sections and connected by a stranded conductor 42 which flexes to take up expansion &c. Each coupling is surrounded by a corona shield as shown.
Patent GB-1468490-A (GB)
Title: Method for removing monomers from polymerisates
IPC: C08F6/00
Filed: 1975-07-30
Abstract: 1468490 Removing residual monomer SHINETSU CHEMICAL CO Ltd 30 July 1975 [7 Aug 1974 19 Oct 1974 26 Oct 1974] 31813/75 Heading C3P Residual monomer is removed from an aqueous suspension polymerisate of vinyl or vinylidine chloride by partial dehydration to a wet cake containing 10-50% by wt. of water based on the polymer then agitating and heating the wet cake to at least 60 C. under conditions such that the water content of the wet cake does not fall by more than 40% and removing the monomer vapour evolved. Heating is effected by external heating and/or by steam and monomer removal is effected by evacuation possibly with steam or other inert gas to sweep the vessel.
Patent GB-618365-A (GB)
Title: Improvements in or relating to electronic control circuits, for use in supplying a single phase load from a polyphase alternating voltage source
IPC: H02M5/00
Filed: 1946-10-28
Abstract: 618,365. Converting ; supply systems for resistance welding. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Oct. 28, 1946, No. 31888. Convention date, Oct. 31, 1945. [Classes 38 (ii) and 38 (iv)] A welding transformer 11, or other singlephase load, is supplied from a multiphase source 3-5 through a transformer 6 having pairs of reversely connected ignitrons, or other arc discharge devices, 101, 102, 201, 202, 301, 302 in each of the secondary phase windings, the grids of the discharge devices being so controlled that one of each pair is rendered conducting during a predetermined first time interval to pass current through the load in one direction, whilst during a following predetermined interval the other discharge devices are rendered conducting to reverse the direction of load current. A condenser 41 shunting the primary winding of the welding transformer ensures extinction of the devices associated with one interval prior to conduction of the devices associated with the second interval. The sum of the two intervals determines the frequency of the load current and is governed by a squarewave voltage generator 19, this voltage being superposed on alternating voltages provided by the three phase secondary windings 20, 22 of the transformer 21 and controlling the conduction of fixing valves 121, 122, 221, 222, 321 and 322 for the ignitrons, the ignition circuits of the last being energized upon conduction of the corresponding fixing values by the discharge of condensers, such as 319, previously charged over rectifiers, such as 327, from the appropriate phase of a six-phase transformer 14. In a modified arrangement the condenser 41 is omitted and extinction of one set of discharge prior to conduction of the other set is ensured by the connection of the load transformer to the discharge devices through the centre tap of a paralleling reactor connecting anodes of discharge devices 102, 202, 302 to the cathodes of the other three devices. A modified control circuit for the fixing valves is also described.
Patent GB-745112-A (GB)
Title: Improved process for the polymerization of vinyl acetate
IPC: C08F18/08
Filed: 1953-11-17
Abstract: Vinyl acetate is polymerized in solution using an o-alkoxy-benzoyl peroxide as catalyst in the absence of oxygen. Catalysts specified are o-methoxy-, o-ethoxy- and o-propyloxy-benzoyl peroxides and the solvent may be methanol, ethanol, iso- or n-propanol or -butanol or their esters, such as methyl or ethyl acetate, or benzene or toluene. The polymerization may be stopped by the introduction of oxygen or air, or by using only a minute quantity of catalyst in which case the polymerization may be restarted by adding more catalyst, either the same peroxide or benzoyl peroxide.  The examples describe polymerization in sealed tubes and under inert atmospheres and the polymers obtained give, on saponification, polyvinyl alcohols of higher polymerization degree than normal.
Patent GB-193523-A (GB)
Title: Improvements in lather generators
IPC: A45D27/10
Filed: 1921-11-29
Abstract: 193,523. Zingali, G. Nov. 29, 1921. Shaving-appliances; soap holders.-A lather generator comprises a casing 40 containing a receptacle 5 for liquid soap or soap solution, an air-bulb 16 in communication with the receptacle 5 through a pipe 11 disposed with its lower end under the surface of the liquid, and a nozzle 25 mounted on a plug 22 which screws into a cap 20 which closes the casing 40 and the receptacle 5. The nozzle consists of a hollow body 26 over the mouth of which a wall 28 of foraminus material such as wire gauze, cheese cloth &c. is retained by a cap 27<1>. Passing through the casing 40 is a plunger 42 for compressing the 'bulb 16, which is provided with valves 14, 17. In use, air is forced from the bulb through the pipe 11, and passing through the liquid soap, generates lather which is forced through the foraminous wall 28 of the nozzle in the form of minute bubbles.
Patent GB-1519366-A (GB)
Title: Method for separating and compacting fluid sludges containing fibrous materials
IPC: C02F11/125
Filed: 1976-08-02
Abstract: 1519366 Sedimentation Tank SOC GENERALE DE CONSTRUCTIONS ELECTRIQUES ET MECANIQUES ALSTHOM SA 2 Aug 1976 [19 Aug 1975 11 June 1976] 32171/76 Headings B1C and BID In an apparatus for compacting sludge entering through inlet I is flocculated, flocculated solids are urged downwardly by slowly rotating paddles 7, supernatent liquid overflows at 10 to launder 11, flocculated settling solids are then compressed in an intermediate part of the device by blades 124, 12 and passed through first orifice to a mechanical device 14 for further compaction with lateral discharge of liquid and discharge of compacted flakes through a second orifice 17 of automatically adjustable cross section. The fluid discharges through wall 15 (e.g. of slotted or mesh material). The orifice 17 and the end 20 of device 14 may be frustoconical. The device may comprise an auger screw 13 having optionally a flexible cleaning edge for the screen 15. The orifice 17 may be of rubber of decreasing wall thickness along its length. The mechanical device 14 may have fixed longitudinal blades 18 to prevent rotation of material being passed through the device.
Patent GB-920349-A (GB)
Title: Improvements in and relating to purification of fats
IPC: C11B3/06
Filed: 1960-09-20
Abstract: <PICT:0920349/III/1> <PICT:0920349/III/2> Wet alkali-refined fat is further purified to remove alkali and soap residues by treatment with 0,015-0,05% by weight of the fat of a non-toxic fat-insoluble acid which has a dissociation constant greater than that of the fatty acids of the soap residues, the treatment being conducted under conditions of vacuum drying whereby a precipitate of salts forms in the fat, which precipitate is removed by filtration.  The fat to be treated is suitably coconut or rape oil, and the non-toxic acid may be hydrochloric, lactic, tartaric, or acetic acid, but is generally citric acid.  The reaction is preferably carried out at 80 DEG -95 DEG C., suitably in the presence of a reducing agent; as a reducing agent, hydrogen gas or, more usually, sodium bisulphite in an amount of 0,01-0,03% by weight of the fat may be used.  The fat may be bleached with a bleaching earth simultaneously with or subsequently to the treatment with acid, and may also later be deodorized.  Fig. 1 illustrates an embodiment for batch treatment. Fat is passed by line 2 to tank 1 maintained at low pressure through line 7.  Citric acid from tank 6 and bleaching earth from tank 4 are added by lines 5 and 3 and the mixture agitated by agitator 8.  On completion of the treatment, pump 10 passes the mixture through line 9 to filter 11, whence the fat passes to a deodorization treatment.  Fig. 2 illustrates an embodiment for continuous treatment.  Fat is passed to spraying device 22 situated in container 12 evacuated through line 21.  The sprayed fat is collected in tray 13 and agitated by stirrer 19 with citric acid solution run in from tank 23.  The mixture passes through outlet 16 to tray 14 which is also fitted with an agitator 20, and bleaching earth, either in powder form or as a suspension in oil, is run in from tank 25.  After some 15 minutes, the mixture is passed through drain 17 to buffer tank 15, and thence by pump 18 through filter 28.  Automatic programme apparatus 27 controls the operation of valves 24 and 26, and drains 16 and 17.
Patent GB-660605-A (GB)
Title: Improvements in or relating to magnetic amplifiers
Inventor: MAYER SIMON ERNEST
IPC: H03F9/02
Filed: 1948-12-14
Abstract: The cores of two interconnected transformers forming a magnetic amplifier (see Group XXXIX) may be constructed from dissimilar ferro-magnetic materials.  Suitable materials given are compositions consisting of 79 per cent nickel, 5 per cent molybdenum, 0.5 per cent manganese and 15.5 per cent iron or 65 per cent nickel and 35 per cent iron for one core and either 70 per cent nickel and 30 per cent iron or 78.5 per cent nickel, 3.5 per cent molybdenum, 0.5 per cent manganese and 17.5 per cent iron for the other core.
Patent GB-840095-A (GB)
Title: Radiant energy sensitive apparatus
IPC: H01L31/14
Filed: 1956-10-23
Abstract: 840,095. Photo-sensitive device circuits. RADIO CORPORATION OF AMERICA. Oct. 23, 1956 [Nov. 17, 1955], No. 32318/56. Class 40 (3). [Also in Groups XXXVI and XL (a)] Radiation-sensitive apparatus comprises a photo-conductive body connected in series with an alternating current utilization device, the body comprising two sets of electrodes, one of which is fed with current of one polarity while the other is fed with current of the opposite polarity, whereby the device is fed with A.C. and the photo-conductive body effectively with D.C. to which it is more sensitive. Fig. 1 shows a suitable arrangement in which utilization device 14 and the two portions 10 and 12 of a photo-conductive body which are each fed through a rectifier 20 and 18 respectively oppositely poled, are connected in series across an A.C. source 16. In place of rectifiers 18 and 20, two batteries may be provided, each being of sufficient voltage to ensure that current flowing during the A.C. cycles is always in the same direction. The device 14 may consist of an electroluminescent device. Fig. 3 shows a light amplifier arrangement comprising a transparent base 34, with transparent conducting film 36, electroluminescent layer 38, light opaque layer 40, current diffusing layer 28, and photoconductive layer 30 which is corrugated and provided with a plurality of silver electrode layers 32. Two series of corrugations perpendicular to each other may be provided. Alternate electrodes are connected through oppositely poled rectifiers 18 and 20 to an A.C. source 16, the other pole of which is connected to conductive layer 36. When a light image is applied to the photo-conductive layer, the variation in conductivity of each portion effectively controls the field across the electroluminescent layer 38 and results in the emission of a corresponding light image. The photo-conductive material may consist of cadmium sulphide, the electroluminescent layer of zinc sulphide activated by copper and mixed with ethyl cellulose, the current diffusing layer 28 of cadmium sulphide which has been made conducting by adding cadmium chloride and heating at 700‹ C. for 20 minutes, and the conductive film 36 of tin chloride.
Patent GB-1157307-A (GB)
Title: Sulfonate-Thiocarbonate Copolymers
Inventor: GOLDBERG EUGENE P
IPC: C08G75/00
Filed: 1966-07-19
Abstract: 1,157,307. Polymers containing sulphonate and thiocarbonate linkages. BORG-WARNER CORP. 19 July, 1966, No. 32445/66. Heading C3R. Copolymers containing sulphonate and thiocarbonate linkages are made by reacting (a) at least one bisphenol with (b) 25 to 75 mole per cent of an arylene disulphonyl chloride and correspondingly (c) 75 to 25 mole per cent of thiophosgene. A large number of reactants of types (a) and (b) are specified. Reaction is preferably effected by the interfacial process, reactant (a) being dissolved in aqueous alkali and reactants (b) and (c) in an organic solvent. In an example bisphenol-A, 4: 4<SP>1</SP>-biphenyldisulphonyl chloride and thiophosgene were reacted. Uses.-Films, fibres, mouldings, coatings, adhesives. Reference has been directed by the Comptroller to Specifications 927,178 and 975,813.
Patent GB-1603349-A (GB)
Title: Apparatus for and method of depositing adhesive strips
IPC: B29C65/00
Filed: 1978-05-19
Abstract: In an apparatus for and method of depositing adhesive strips, a ribbon including a layer of adhesive is directed along a predetermined input path. In the first two embodiments, the ribbon is engaged between a measuring roller and a driven roller responsive thereto, and fed into positioning structure. The material on which the adhesive is to be deposited is located between the positioning structure and a head, which can be heated. Separation means is provided adjacent the input path for selectively separating at least a portion of the ribbon to form adhesive strips, after which the strip of adhesive, the material and the head are engaged to effect deposition of the activated adhesive strip onto the material. In a third embodiment, the ribbon is engaged by a feed pulley and directed toward a revolving wheel rotatably interconnected with the feed pulley. The wheel, which can be heated, receives and transports the ribbon along a portion of the periphery thereof to press the activated adhesive into engagement with the adjacent material. Both the feed pulley and the wheel are mounted on a frame which is rotatably supported so that strips of adhesive can be applied in linear or curvilinear fashion. If desired, separation means can be provided between the feed pulley and the wheel for selectively separating at least a portion of the ribbon to form adhesive strips of predetermined lengths.
Patent GB-249786-A (GB)
Title: Improvement in rock drill shell oilers
IPC: B25D17/26
Filed: 1925-12-23
Abstract: 249,786. Ingersoll-Rand Co., (Assignees of Bayles, L. C.). May 27, 1925, [Convention date]. Percussive drills. - The feed-screw X co-operates with a nut Y held in a lug Z on the cylinder A by a collar b and a nut c. The guide shell T is formed with a conical part W which co-operates with clamps for securing the shell to a column or like support. The piston and drill are caused to rotate by a fluted rifle bar S engaging an extension J of the piston.
Patent GB-1237571-A (GB)
Title: Solid electrolytes
Inventor: OWENS BOONE BAILEY
IPC: H01M6/18
Filed: 1968-07-08
Abstract: 1,237,571. Electrolytic coulometers. NORTH AMERICAN ROCKWELL CORP. July 8, 1968 [July 6, 1967), No.32546/68. Heading G1Q. [Also in Divisions C2 and H1] An electrolytic coulometer with a solid electrolyte is tubular in form with the outer electrode consisting of a titanium tube, the inner wall of which is lined with a carbon-polycarbonate mixture, an inner electrode concentric with the outer and used as a reservoir of silver, consisting of silver, carbon and RbAg 4 , I 5 , and, as solid electrolyte between and contacting the electrodes, a composition having the empirical formula N(C 2 H 5  ) 4  Ag 4 I 5 .
Patent GB-901330-A (GB)
Title: Process for effecting a self-sustaining nuclear fission reaction
IPC: G21C3/50
Filed: 1960-09-22
Abstract: 901,330. Fuel material. STICHTING REACTOR CENTRUM NEDERLAND. Sept. 22, 1960 [Sept. 23, 1959], No. 32639/60. Addition to 804,787. Class 39 (4). A nuclear reactor of the type described in the parent Specification having a suspension of nuclear fuel in light or heavy water and in which the solid particles carried in the suspension for the adsorption of the fission products are formed of fissile material of smaller size than the particles of the main fuel charge.
Patent GB-863272-A (GB)
Title: Improvements relating to magnet assemblies
Inventor: WATSON EDWARD
IPC: H01F7/02
Filed: 1957-10-18
Abstract: 863,272. Magnets; electromagnets; magnetizing apparatus. FAIREY CO. Ltd. Oct. 14, 1958 [Oct. 18, 1957; Feb. 13, 1958], Nos. 32652/57 and 4775/58. Class 35. [Also in Group XXXVI] To ensure that the pole faces of a magnet assembly, e.g. in a nuclear magnetic resonance detector (see Group XXXVI), are accurately parallel, one of them is freely movable relative to the other and they are spaced apart by non- magnetic slip-gauges. The assembly comprises two sets of stacked rings 15, permanently magnetized in situ by coils 18, and connected by yokes 11, 12 to the polepieces, one of which, 20, is fixed while the other, 30, is a sliding fit in yoke 11. The polepiece 30 has a movable portion 32 connected to the remainder at a spherical seating 33, whose centre of curvature is near the middle of the air gap. The polepieces have lapped faces, either flat or curved; in the latter case the arcs are concentric, one convex, the other concave. The faces are spaced apart by one or more identical non-magnetic slips 40 of glass, quartz or bronze. If one slip only is used it is of horeseshoe shape, or annular with radial holes for the insertion of probes. Coils 48 on each polepiece enable the field strength to be varied. In alternative arrangements electromagnets may replace the permanent ones, and one polepiece may be connected to its yoke at a spherical surface while the other is slidable to set the gap length. According to the second Provisional Specification the movable polepiece is located in the yoke by two sets of balls in recesses in the yoke, each ball being adjusted radially with respect to the polepiece by a screw. In the first Provisional Specification flexibility of one polepiece is obtained by mounting it in a rubber or iron-loaded grease bush instead of employing the spherical seating arrangement previously described.
Patent GB-815372-A (GB)
Title: Process for moulding hollow bodies of asbestos cement or like plastic material
IPC: B28B21/20
Filed: 1955-11-16
Abstract: 815,372. Moulding asbestos cement pipes. MARCHIOLI, G., and GREMIGNI, G. Nov. 16, 1955 [April 13, 1955], No. 32764/55. Class 87(2). An inflatable core for use in moulding pipes and tubes comprises an inner tube and a flexible ring surrounding the inner tube where an enlarged diameter of the moulded pipe is to be formed, the inside diameter of this ring being considerably greater than the outside diameter of the uninflated inner tube. For moulding a branched pipe there are two inner tubes 1, 2 with their interiors in communication, their ends closed at 4, 3 and inflatable through a valve 6. The outer ends of the pipes are moulded to enlarged diameters by rubber rings 8, 7 which surround the tubes 1, 2 with substantial clearance when those tubes are deflated and which have rims 10, 9 to form the pipe ends. The inner tubes are inflated under low pressure until their outsides touch the insides of the rings 7, 8; the material to be moulded, e.g. asbestos cement, is applied to the core; the core is placed in the mould and inflated under high pressure and when the material has set the pressure is released and the core assembly is removed.
Patent GB-700675-A (GB)
Title: Process and means for the production of hardened surfaces on articles subjected to wear
IPC: C25D5/34
Filed: 1949-12-23
Abstract: 700,675. Altering physical structure. SCHROTH, F. Dec. 23, 1949, No. 32986/49. Classes 83 (2) and 83 (4) [Also in Group XXXVI] To reduce wear the working surfaces of internal combustion engines, pumps, valves, tappets, spring guides, ships' screws, turbine blades &c. are cleaned and hardened by projecting thereupon particles of quartz, glass or steel, e.g. until a velvet-like pure metallic surface is formed whereafter this is chromium plated. For treating the inside of a tube the particles may be fed to a tube 2 surrounding a tube 1 for compressed air at a pressure of about three times atmospheric. The inner tube is cut short, as shown and the outer is cut at two sides 2a, 2b. To direct the blast radially the end is partly closed by a tapered plug 3 removably secured by a spring. In a nozzle for external surfaces the outer tube 10, Fig. 4, is closed by a removable plug 12 having a slot 12a corresponding to a flattened end on the inner tube 11. The particles are admitted to the tube 11 by holes 11a.