baber/WOPTO huggingface dataset:
Patent GB-650548-A (GB)
Title: Improvements relating to centrifugal extrusion apparatus
IPC: B29C48/05
Filed: 1947-12-17
Abstract: <PICT:0650548/IV (a)/1> <PICT:0650548/IV (a)/2> In a centrifuge suitable for use in extruding thermoplastic substances, particularly shellac, into threadlike form, as in Specification 603,912, the centrifuge bowl, especially the parts adjoining the extrusion apertures, are heated by hot air introduced preferably from above the bowl, the air flow being induced or assisted by rotation of the bowl. In one form of apparatus, Fig. 1, the centrifuge bowl c is rotatable whilst the two coaxial cones a, b are stationary.  Plastic material is introduced through the cone a and is forced, together with a p certain amount of air, through the extrusion apertures e of the bowl, further heated air being drawn in past gas-ring d between the two stationary cones.  The bowl shown in Fig. 2 is made up of an inner shell f and an outer shell g connected by tubes h through which the material is centrifuged.  The hot air passes into the space between the shells, flows over the tubes h and is discharged through outlets i which are specially shaped to promote the air flow.  Modifications are also described in which heated air is introduced (1) from below the bowl, and (2) from above and below the bowl.ALSO:In a centrifuge suitable for use in extruding thermo-plastic substances, particularly shellac, into thread-like form, as in Specification 603,912, the centrifuge bowl, especially the parts adjoining the extrusion apertures, are heated by hot air introduced preferably from above the bowl, the air flow being induced or assisted by rotation of the bowl. In one form of apparatus, Fig. 1, the centrifuge bowl c is rotatable whilst the two coaxial cones a, b are stationary.  Plastic material is introduced through the cone a and is forced, together with a certain amount of air, through the extrusion <PICT:0650548/III/1> <PICT:0650548/III/2> apertures e of the bowl, further heated air being drawn in past gas ring d between the two stationary cones.  The bowl shown in Fig. 2 is made up of an inner shell f and an outer shell g connected by tubes h through which the material is centrifuged. The hot air passes into the space between the shells, flows over the tubes h and is discharged through outlets i which are specially shaped to promote the air flow.  Modifications are also described in which heated air is introduced (1) from below the bowl and (2) from above and below the bowl.
Patent GB-1057868-A (GB)
Title: Rotary ball valves
IPC: F16K5/06
Filed: 1963-08-22
Abstract: 1,057,868. Valves. CLAYTON MARK & CO. Aug. 22, 1963 [Sept. 4, 1962 (2)], No. 33305/63. Heading F2V. A ball valve comprises a body 24, Fig. 1, having a valve chamber 30, a ball valve element 38 in the chamber, and a passageway 36 communicating with the chamber, an annular spacer 58 positioned in the passageway and having a radial face to abut an opposed face in the valve body, and means 66 having V-shaped ends engageable with one of the surfaces of a V-shaped groove 68 in the spacer to hold the latter with its radially disposed face in engagement with the corresponding face on the body. The means 66 consist of set-screws having pointed ends which hold the spacer 58 to the left until the bolts 59 are tightened, leakage of fluid being prevented by an 0-ring 70. To enable the spacer, valve element and seating rings to be replaced without complete removal of the valve body, dimension a is made greater than dimension b so that the body can pivot around and be suspended from the two lowest bolts. The seating rings may be of a synthetic plastics material and each have one or more annular serrations on the rear face to provide flexible ridges which deform under pressure to improve the seating engagement with the valve body. The rings may also have a chamfered rear edge to ensure proper seating in the valve body without the use of close tolerances.
Patent GB-848319-A (GB)
Title: Improvements relating to the production of a stream of combustible gases by the gasification of liquid fuel
IPC: A01N53/06
Filed: 1955-11-21
Abstract: 848,319. Oil gas. FRASER, R. P. Nov. 21, 1956 [Nov. 21, 1955], No. 33330/55. Class 55(2). A continuous two-stage process for gasefying liquid fuels comprises first atomizing and vaporizing the liquid fuel in a chamber maintained at a vaporizing temperature, using steam as the atomizing medium for the liquid fuel, and then passing the mixture of steam and vaporized fuel into and through an adjoining chamber maintained at a gasefication temperature. The two chambers may be separated by a porous partition which may be in the form of a thimble and the heat for the process may be obtained by introducing a limited quantity of air or oxygen into the gasefication chamber. The gasefication may be effected in the presence of a catalyst which may be present in the porous partition or it may be introduced into the steam as a suspension or as a salt dissolved in the fuel or as a salt dissolved in water and emulsified with the fuel. Suitable catalysts are salts of the alkaline earths, e.g. calcium nitrate, or calcium oxide or calcium naphthenate. In the apparatus shown a liquid fuel and steam are introduced through an atomizing device 4 into a chamber 10 and together with additional steam added at 11 pass into a vaporizing chamber 12 formed by two opposed conical portions 12a and 12b. The conical portion 12b is of porous material containing a catalyst and the mixture of vaporized liquid fuel and steam passes through it into a gasefication chamber filled with heatconducting material 13 and a combustible gas is withdrawn through an outlet 15. To supply heat for the process a portion of the combustible gas is withdrawn from the gasefication chamber through passages 16 to enter a combustion chamber 17 where it is combusted there with air or oxygen admitted through an inlet 23, a chamber 20 and passages 19. Combustion gases leave by an outlet 22 and serve to preheat incoming combustion air.
Patent GB-1006553-A (GB)
Title: Heating apparatus using gaseous or liquid fuels, especially fuel oil
IPC: F24H1/28
Filed: 1962-08-30
Abstract: 1,006,553. Oscillating gas column combustion chambers. SCHMITZ & APELT INDUSTRIEOFENBAU G.m.b.H. Aug. 30, 1962 [Sept. 4, 1961], No. 33401/62. Heading F1L. A heating apparatus using gaseous or liquid fuels has a combustion chamber in which compressional vibrations are produced by oscillating combustion and gas flues connected to the combustion chamber, the intermittent operation of the fuel burner being positively determined and independent of the natural frequency of the heating apparatus, compressed air for supporting combustion being supplied intermittently to the combustion chamber at a phase displaced from the phase of the intermittent fuel supply. A pump 5 delivers fuel through a line 6 to a burner 7 of a combustion chamber 9 surrounded by a tubular casing 13 and supplied with air by a blower 17 through check valve 18, air chamber 15 and radial inlets 11 in a cylindrical member 10. Inlets 11 act as chokes for the air supply and in conjunction with chamber 15 effect a phase displacement between the fuel and air supplies to combustion chamber 9. The part 19 of casing 13 forms a combustion gas channel and communicates with a flue gas chamber 21 formed by a casing 20 and a coiled sheet 23 of metal or ceramic material. The combustion and flue gas chambers are dimensioned so that their combined natural frequency is approximately equal to the fuel injection frequency controlled by the fuel pump, the pump being a single cylinder plunger type for liquid fuel or diaphragm type for gaseous fuel. The portion of chamber 21 extending beside combustion chamber 9 acts as a recuperator for heating the combustion air flowing between member 10 and casing 13. Heat is carried off externally from outer casing 20 for air heating or in a modification, Fig. 2 (not shown), for heating a liquid. In a further modification, Fig. 3 (not shown), a single or several parallel connected tubes lead from the combustion chamber for heating purposes, the waste gases being returned to the flue gas chamber.
Patent GB-1382283-A (GB)
Title: Inserts for filters for suspended material and methods of production of such inserts
IPC: A62B23/00
Filed: 1972-07-17
Abstract: 1382283 Gas filter element DRAGERWERK AG 17 July 1972 [17 July 1971] 33424/72 Heading BIT  A gas filter element comprises a section 2 of corrugated paper secured by adhesive between two identical plastics rings 1a, 1b whose various projections 3, 4, 5 interdigitate to seal the paper therebetween. The rings may each have a mounting flange 11. In manufacture (Fig. 5, not shown) the rings 1a, 1b receive adhesive layers and are then pushed into contact with opposite sides of the paper, which is clamped between suitably shaped members (9, 10), by moving ring carriers (7, 8). Paper extending beyond the rings is then trimmed off.
Patent GB-521510-A (GB)
Title: Removable bits for percussive drills
IPC: E21B17/046
Filed: 1938-11-17
Abstract: 521,510. Drill bits. LIDDICOAT, P. Nov. 17, 1938, No. 33487. [Class 124] A removable bit 2 for percussive drills is formed with a socket 6 provided with a continuous groove 14 or a plurality of undercut recesses 7 formed therein, and adapted directly to receive the end of a drill rod 1, which end is formed of deformable material and which is deformed under impacts which occur during the normal operation of the drill rod to produce protrusions or projections 10 which lockingly engage the groove or recesses. The rod 1 and socket 6 may be oval, square, hexagonal, or octagonal in cross-section, there may be a drive fit between the rod and socket, with or without the side walls of the socket being slightly tapered and the upper edge of the socket may be bevelled internally and/or externally. The bottom 12 of the socket may be flat, sloping, or partially or wholly concave, and it may be formed with bossed corrugations or convulations 9, whilst the recesses 7 may be formed at the angles or on the side walls of the socket. The bit may be formed with a central water passage 19.
Patent GB-316490-A (GB)
Title: An improvement in the manufacture of cameras using roll films
IPC: G03B19/04
Filed: 1928-11-16
Abstract: 316,490. Milligan, G. Nov. 16, 1928. Cameras, roll-film.-The camera has a pressure member which can be pressed by the operator against the paper backing of the film near the take-up spool to ensure that it shall be tightly wound. In one form, a thin piece of metal 11 mounted on the inside of the camera back has a press button 12 by which it can be pressed against the film. Alternatively, the camera back may be provided with a flexible diaphragm which is depressed by the operator's thumb when winding, sufficiently to bear upon the film.
Patent GB-325020-A (GB)
Title: Improved wool pack or other flexible container and method of manufacture thereof
IPC: D06M15/693
Filed: 1928-11-16
Abstract: 325,020. Finlayson, P.. and Gunn, W. W. Nov. 16, 1928. Coated fabrics.-A. material for making packs or containers for wool is made by treating jute or hessian fabric under reduced pressure with a solution comprising sodium silicate and an amylaceous material with or without rubber latex, or with a solution comprising sodium silicate and latex, to which may be added glue and glycerine, or sodium alginate, resinate, stearate or linolate, or casein or albuminates, so that the fabric is thoroughly impregnated, subjecting the treated material to pressure to consolidate it, and then coating the treated fabric with rubber latex mixed with sulphur or a sulphur compound with or without an accelerator and filling agents. The rolls or bales of hessian are placed in a vessel and air is extracted to a vacuum of about 26 inches, after which the impregnating solution is admitted. The cloth is taken out when impregnated and passed through rollers exerting a slight pressure. The fabric is then passed through the coating bath of latex and sulphur, and finally dried. The impregnating mixture preferably consists of neutral or slightly alkaline sodium silicate of 80‹ Twaddell together with either a paste made of tapioca, starch or similar amylaceous matter, or with latex containing 20 per cent of rubber with one or other vulcanizing agents, or with a mixture of amylaceous paste and rubber latex in any suitable proportions. The coating solution consists of latex containing 25 to 30 per cent of rubber, together with one or more of the following fillers; clays, disintegrated paper, magnesium carbonate, magnesium oxide, lithopone, iron oxides, carbon, or zinc oxide. Glue or casein may be added. In an example, the coating solution consists of 10 lbs. of kaolin or clay, 1¢ lbs. of casein, 2¢ ozs. of creosote, 6 ozs. of liquid ammonia of 0.88 strength, 6 ozs. of formaldehyde of 40 per cent strength, 6 lbs. of latex of 25-30 per cent strength, and 2¢ ozs. of ammonium hydrosulphide.
Patent GB-207392-A (GB)
Title: Improvements in electrical devices for controlling the flow of liquids
IPC: B67D3/00
Filed: 1922-12-09
Abstract: 207,392. Jackson, A. G. Dec. 9, 1922. Electrically-actuated valves. - Relates to apparatus of the class in which a liquid-control valve is opened automatically by the closing of an electric circuit through a solenoid, and is closed by gravity or spring influence when the circuit is interrupted, the circuit being under the control of a switch which is actuated by the act of moving a container into the filling position and removing it from such position. Instead of connecting the valve to the core of the solenoid by a coupling-rod, a plunger which acts in the two-fold capacity of a valve and a core is provided, the plunger being operated by electric energy excited in a solenoid and transmitted through the substance of the container forming the valve casing. The solenoid coil C surrounds the valve casing F, which is made of non-magnetic material. The plunger H is made partly or wholly of iron, and the outlet nozzle L with the valve-seat G may be screwed into the casing F, which is connected with the inlet at I. A plate N through which the nozzle L passes is hinged at M to a bracket fixed to the nozzle and at its free end carries a hinged rod 0. When a bottle is placed under the nozzle and pushed upwards against the plate N, the rod 0 enters between the contacts B, D and completes the main circuit or opens a shunt circuit so that the solenoid C is energized and the plunger H lifted off its seat. The plunger may be made as a tube with only slight clearance in the tube F and with apertures K to allow of the passage of liquid. The end of the plunger may be made of rubber, metal, or other material suitable for the liquid used and adapted to make a close seating. The apparatus is suitable for controlling the flow of hot liquids and especially those which are of a corrosive character.
Patent GB-342013-A (GB)
Title: Improvements in or relating to cabinets for gramophones and the like
IPC: G11B33/02
Filed: 1929-11-06
Abstract: 342,013. Gramophone cases. RUHL (1922), Ltd., 0., 85, City Road, London, and WOODS, C. E., Brookside, West Beach Avenue, Wickford, Essex. Nov. 6, 1929, No. 33812. [Class 18.] A supporting stay 1 for the hinged lid 3 of a gramophone case or cabinet 3a or the like is connected to a pivotally mounted recordholding flap 7 housed within the cabinet lid 3 so that when the latter is raised the flap 7 falls away from the lid about the pivotal axis 2 of the stay 1 to facilitate the insertion or removal of records. As shown, the stay 1 is curved and has a slot 4 and notch 5 co-operating with a fixed stop 6 on the cabinet 3a. When the lid 3 is raised the notch 5 engages the stop 6 due to the action. of gravity or a spring. To disengage the stay 1 from the stop 6 the record-holding flap 7 is slightly raised. The cabinet may have two stays, one on each side of the lid.
Patent GB-967362-A (GB)
Title: Improvements in and relating to cement mortar for casting of concrete
IPC: B28C5/00
Filed: 1960-10-03
Abstract: Concrete having optimum and consistently reproducible compression strength is prepared by adding to the mortar a quantity of gas generating substance which is determined by experiment and calculation, and which is just sufficient to counter-balance the internal and external shrinkage which normally takes place during the setting of concrete, and hence to produce a volume stable product. Examples give the compression strengths of samples of concrete prepared from mortar with added fine aluminium grains as gas generator, and of samples of concrete prepared from the same mortar, aluminium grains and gravel or broken stones.
Patent GB-1212271-A (GB)
Title: Grinding apparatus
Inventor: CHRISTY ROBERT FELL
IPC: B02C13/284
Filed: 1968-07-17
Abstract: 1,212,271. Hammer mills; screens. CHRISTY & NORRIS Ltd. 5 Aug., 1969 [17 July, 1968], No. 34047/68. Headings B2A and B2H. A screen comprising corrugated metal bands 2 interleaved with further metal bands 1 which abut the crests of the corrugations, thus defining screening apertures 3, forms the boundary wall of the grinding chamber of a grinding apparatus, so that a cutting and grinding action takes place between the screen and the grinding mechanism. The metal may be spring steel.
Patent GB-922825-A (GB)
Title: Metering pump assembly
IPC: B65B3/32
Filed: 1961-09-22
Abstract: 922,825. Reciprocating pumps. PYLES INDUSTRIES Inc. Sept. 22, 1961 [Sept. 29, 1960; Aug.23,1961],No.34108/61. Class 102(1). A pump assembly for dispensing two liquids in predetermined proportions comprises two piston pumps 62, 64, Fig. 1, the piston of pump 62 being actuated from the piston rod of pump 64 through a lever arrangement 66 which is adjustable to vary the stroke of pump 62 relative to that of pump 62. Pump 64 is directly actuated by a compressed air motor 48 and the pumps 62, 64, discharge through pipes 32, 30, to a mixing spray gun 22 having a control trigger 34 which also controls the pilot valve 46 of motor 48. The pump bodies are secured to lids 60, 58, of containers 24, 26, one of which may contain e.g. a synthetic resin while the other contains an accelerator for admixture therewith. The lever system 66 comprises a lever 240, Fig. 2, fulcrummed on a fixed pivot 268 and connected at 292 to the piston rod 148 of pump 64, and a second lever 242 attached to the piston rod of pump 62 at 278 and fulcrummed on a fixed pivot 288. The levers 242, 240, are inter-connected by an adjustable pivot 248, comprising a pair of independently pivoted members 244, 246, Fig. 4. Movement of the pivot 248 to the left, Fig. 7, increases the stroke of pump 62 and to the right decreases its stroke. The pumps 62, 64 are double acting and comprise an inlet valve 108, Fig. 7, and an outlet valve 190 carried by the piston 198. On the clownstroke the displaced liquid is forced through valve 190 and out through port 170 and on the upstroke valve 190 closes and material. remaining above the piston head 198 is forced out through port 170 while fresh material is drawn in through valve 108. The inlet to the tube 84 is formed by a cup 126 projecting above the level of the inlet apertures 134 to prevent air entering when the pump is removed. The stroke of the piston 52 of the motor 48 may be adjusted by an adjustable screwed stop. In a modification, Fig. 8 (not shown), the pumps are single acting and deliver to a filling nozzle for filling moulds on a conveyer. The pump reservoirs may be heated.
Patent GB-447499-A (GB)
Title: Improvements relating to electrical fluid level indicators
IPC: G01F23/36
Filed: 1934-11-28
Abstract: 447,499. Variable resistances. RUSSELL, V. J. S., Cricklewood Works, Edgware Road, Cricklewood, London. Nov. 28, 1934, No. 34170. [Class 37] [See also Group XXXVIII] In apparatus for indicating liquid levels of the type wherein a resistance in the indicating circuit is varied by a float, the float i operates contact arms k arranged on each side of a uniformly wound resistance e and pivoted near one end of the resistance so that during movement of the arms k over the resistance the points of contact move along the arms. This arrangement permits of unequal variations of resistance corresponding to equal angular movements of the arm and thus facilitates the use of a more uniform calibration of the instrument scale. Specification 144,346, [Class 37], is referred to.
Patent GB-449791-A (GB)
Title: Improvements in or relating to loose-leaf books or binders
IPC: B42F13/16
Filed: 1935-12-10
Abstract: 449,791. Loose-leaf binders. BERBERICH, W., 60, Gartonstrasse, Heilbronn, W³rtemberg, Germany. Dec. 10, 1935, No. 34229. [Class 146 (i)] In a loose - leaf book provided with non-closed resilient rings mounted substantially parallel to each other on a rail or the like, at least one of the extremities of each ring is provided with a locking-device adapted to engage with the rail in such a manner that the rings do not open when the leaves are pulled outwardly, but are adapted to be opened by exerting a circumferential and compressional pressure on each ring. The rings d, of resilient metal, celluloid, or the like, are integral with the rail c, Fig. 2, which is secured to the cover, and are provided with hooks e to engage with the rail c, or with notches or slots therein. The rings and rail may be bent out of wire or steel strip to form a single hooked ring at each end of a straight rail, or a number of double rings d, Fig. 5, along a rail c. Alternatively both ends of the ring may be hooked to engage over opposite sides of a plain flat rail, in which staggered notches may be provided, or in small holes in the rail, or in a plain or notched longitudinal slit k, Fig. 9, in the rail. The notches or slots may be bevelled to assist engagement. Alternatively the hooks may be turned inwards or outwards to engage with inturned longitudinal flanges on an arcuate rail, which may form the back of the cover, or with slots or notches therein. The rings may engage over annular depressions or in slots in a cylindrical rai].
Patent GB-894668-A (GB)
Title: Sodium deuterium reactor
IPC: G21C15/20
Filed: 1960-10-06
Abstract: 894,668. Reactors. UNITED STATES ATOMIC ENERGY COMMISSION. Oct. 6, 1960 [Oct. 15, 1959], No. 34305/60. Drawings to Specification. Class 39 (4). In a sodium cooled, heavy water moderated nuclear reactor each vertical fuel tube is surrounded by a first metal tube to form an annular space containing both a second metal barrier tube to prevent contact between leakage sodium and heavy water and an inert gas e.g. nitrogen to limit the heat flow from the sodium to the water. Both tubes are supported at one end by flexible bellows to allow for thermal expansion. The reactor core containing the fuel and moderator is mounted in a nitrogen atmosphere between upper and lower headers between which a flow of nitrogen is maintained through the annular space between the fuel and barrier tubes. The sodium is pumped through the fuel elements to an external heat exchanger. The core is surrounded at the sides by concrete and the upper and lower surfaces are provided with neutron shields filled with steel shot. Each fuel element is hung from an upper support in the fuel tube together with upper and lower neutron shield plugs and an upper gamma shield plug. The fuel elements are formed of stainless steel tubes containing 3% enriched powdered UO 2  compressed and sintered. Misalignment of the fuel tubes and the respective channels in the shielding is allowed for by an eccentric adjustment at the upper supporting mounting. The diameter and wall thickness of the fuel tubes is charged along the length to prevent neutron streaming. Specification 844,711 is referred to.