baber/WOPTO huggingface dataset:
Patent GB-533046-A (GB)
Title: Improvements in or relating to electron discharge tubes
IPC: H03H7/00
Filed: 1939-10-02
Abstract: 533,046. Thermionic valves ; wireless signalling. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Oct. 2, 1939, No. 27030. Convention date, Sept. 30, 1938. [Classes 39 (i) and 40 (v)] In a high-frequency power valve with the anode, screen grid and control grid formed as coaxial cylinders the screen grid lead is formed by a metal ring extending radially through the envelope and connected at its two sides to metal housings containing the anode and the leads for the cathode and control grid respectively ; the disc is of such thickness that the currents on the two sides are effectively separated by the " skin effect"; the object is to prevent interference by coupling in the leads. The Figure shows a valve the envelope of which consists of the anode 1 and an insulating portion 2. The screen grid 4 is carried by a metal cylinder 12 secured to a copper disc 11 sealed through the wall of the portion 2 of the envelope. To the disc 11 are secured metal housings 18, 20. The housing 18 encloses the anode 1 and is capacitively coupled to it by a plate 19 on a tube 15 forming the anode lead and enclosing supply pipe 16 for cooling water flowing in a jacket 13. The tube 15 is inductively coupled to an output loop and can be tuned by semicylindrical plates 131 sliding in its housing. The housing 20 contains the control grid lead 7 and cathode leads 9, which are screened from each other by a partition 10, the conductor 7 being inductively coupled to an input loop 8. The grid 6 may be connected to a disc such as 11 at each end and separate housings provided for the anode leads, cathode leads, and control grid leads. Arrangements of valves in push-pull with different arrangements of housing are also described.
Patent GB-811117-A (GB)
Title: Separation of organic bases
IPC: B01D3/14
Filed: 1955-09-22
Abstract: A weaker organic base is separated from its mixture with one or more stronger organic bases by passing the vapours of the mixture countercurrent to a stream of acid, the rate of feed of the acid in relation to the rate of feed of the bases being such that the said weaker base passes on as vapour, the said stronger base or bases being absorbed by the acid.  The basicities of the stronger bases are preferably at least 1.5 times the basicity of the said weaker base. The process may be conducted at sub-atmospheric, atmospheric or super-atmospheric pressures.  The organic bases may be introduced as vapours, either alone or as mixtures with other vapours, e.g. water, or in liquid form, e.g. as solutions in water or other solvents, when they are vaporized in situ.  Strong acids are preferred, e.g. hydrochloric, sulphuric, perchloric and toluenesulphonic acids.  They are preferably added as aqueous solutions and should be introduced at a rate at least stoichiometrically equivalent to the rate at which the organic bases it is desired to absorb are introduced.  Specified mixtures which may be separated are trimethylamine with methyl and/or dimethylamine, 3- or 4-picoline with 2 : 6-lutidine and pyridine with piperidine.  In an example, an aqueous solution of trimethylamine containing methylamine and dimethylamine is introduced near the bottom of a distillation column fitted with a reboiler and condenser head; aqueous HCl is introduced above the midpoint of the column and the system kept under reflux; trimethylamine is taken off overhead and an aqueous solution of methylamine hydrochloride and dimethylamine hydrochloride withdrawn from the base of the column.
Patent GB-1093329-A (GB)
Title: Paper tape punch
IPC: H04L17/08
Filed: 1966-06-17
Abstract: 1,093,329. Selective punching apparatus. NAVIGATION COMPUTER CORPORATION. June 17, 1966 [June 18, 1965], No. 27210/66. Heading B4B. In punching apparatus comprising a reciprocatable cage 13 to which a comb 14 is secured, a set of punch pins 17, and interposers 16 of ferromagnetic material selectively movable between the comb teeth and the pins 17 to drive the pins to punch a paper tape 19, each interposer is a spring finger secured at one end to a pole 29, Fig. 3, of a magnet 22 allowing movement of the other end in one plane, X, in response to movement of the cage 13, which is connected to the armature 12 of a solenoid coil 11, and in another plane, Y, towards the pole 31, Fig. 3, of the magnet in response to energization of the magnet by a signal. The finger 16, together with a finger 23 for retracting the pin 17 after a punching stroke is secured to a carriage 28 adjustably secured, by a screw 30, to the magnet pole 29. The comb 14 has secured thereto a lever arm 55 which advances a sprocket 54 stepwise, the tape 19 being held in the punching position by means of a detent lever 61 engaging a detent wheel (60), Fig. 2 (not shown). In a modification, the comb (14), Fig. 6 (not shown), has a punch pin retracting bar (35) mounted on a bracket (36), the bar engaging wide slots (24<1>) in the punch pins (17, 171). In another modification, a ferromagnetic helper bar (40), Figs. 7 and 8 (both not shown), is provided to decrease the gap between the poles (29, 31) of the magnet (22) and a felt pad (42) is provided on a stop-plate (41) to damp any tendency of the spring finger (16) to vibrate when it is released from its associated pole (31).
Patent GB-1007658-A (GB)
Title: Secondary surface heat-exchangers
Inventor: BUCKMAN PETER
IPC: F28F1/30
Filed: 1963-07-10
Abstract: 1,007,658. Secondary heat-exchange surfaces. MORRIS MOTORS Ltd. June 2, 1964 [July 10, 1963], No. 27261/63. Heading F4S. Flat gill plates 6 are spaced along quasirectangular tubes (not shown), the tubes passing through closely fitting tube receiving apertures 2 having marginal flanges 7 on opposite sides thereof, which are shaped inversely to each other, i.e. the opposed flanges may differ in height but the sum of their heights is constant, a portion 8 of each having a height exceeding half the gap between complementary flanges. Thus the plates are rendered self-spacing along the tubes, with a possible maximum spacing equal to the gap between the flanges. The top edge 9 is made longer than the fold at its base in order to prevent the plates 6 falling into each other.
Patent GB-181647-A (GB)
Title: Improvements in steam condensers
IPC: F28B9/08
Filed: 1921-10-14
Abstract: 181,647. Weir, Ltd., G. & J., and Weir of Eastwood, (William Douglas), Baron. Oct. 14. 1921. Surface condensers. -- A vertical plate is arranged directly above the water outlet of a steam-condenser, with the object of preventing vortex motion in the outflowing water, and a consequent rise in the water, with risk of it entering the air outlet, which is to be placed as near the water outlet as possible. The plate d may extend outwards from the, axis of the outlet b, as shown, or it may stop at the edge of the outlet, as indicated by the dotted line g, or it may extend across the outlet.
Patent GB-311221-A (GB)
Title: Improvements in or relating to the regulation of compressed fluid supply systems
IPC: F04B49/24
Filed: 1928-09-22
Abstract: 311,221. Marchaut, P. J. May 7, 1928, [Convention date]. Regulating compression.-The inlet valve 23 is actuated by a lever 22 acted on by a striking rod 24. The trunnion 21 of the lever is eccentrically mounted on a shaft 19 capable of rotation by a lever 18 actuated by a piston 15 subject to receiver pressure acting against a spring. A ball valve 4 on the receiver having opposite seats of different sizes, is opened by the compressed air at a certain pressure and then supplies the air through the channel 10 to the piston 15, which is thus operated to displace the trunnion of the lever into a position in which the lever holds the valve continuously open. Alternatively, the delivery valve or valves may be controlled so as to hold continuously closed.
Patent GB-815622-A (GB)
Title: Improvements in or relating to valves for fluid flow systems
IPC: F16K31/10
Filed: 1956-09-06
Abstract: 815,622. Valves. CARRIER ENGINEERING CO. Ltd. Sept. 6, 1956 [Dec. 9, 1955], No. 27390/56. Class 135. A reversing valve for fluid flow systems comprises a primary chamber 21 containing a primary valve member 45 selectively operable to connect a high-pressure inlet 23 to either of two spaced ports 27, 28, and a secondary chamber 31 having a low-pressure outlet 44, spaced ports 40, 41 with connections 64, 65 to the ports 27 and 28 respectively, and orifices 40<SP>1</SP>, 41<SP>1</SP> each adapted for connection to the high- and low-pressure sides of the system. The secondary chamber contains a secondary valve member 58 responsive to the high pressure in the secondary chamber and operative to provide a flow path for high-pressure fluid through the secondary chamber and one of the orifices 40<SP>1</SP>,41<SP>1</SP> to the high-pressure side of the system whilst also connecting the low-pressure outlet 44 to the other orifice which then leads to the low-pressure side of the system. The hollow cylindrical valve member 45 has a thickened central part 46 slidable in an 0-ring seal 55 and has spiders 47, 48 spaced apart somewhat less than cross-members 53 or other abutments on a stem 52<SP>1</SP> so as to provide limited lost motion. The stem 52<SP>1</SP> is connected to the armature 52 of a solenoid 70. The secondary valve member 58 is formed with opposed heads 60, 61 spring loaded towards seats 38, 39 respectively. As applied to a refrigeration system operating on a reverse cycle and having a compressor 11, a condenser 13, a refrigerant expansion device 16 and an evaporator 17, the compressor delivery passes to the condenser 13 in the position shown through the valve 45, the connection 64 and the orifice 40<SP>1</SP>, the high-pressure above the valve head 60 holding this on its seat and so permitting refrigerant to return to the compressor from the evaporator 17 via the line 118, the orifice 41<SP>1</SP>, the seat 39 and the outlet 44. On energization of the solenoid, the primary valve member 45 rises to its upper seat 61<SP>1</SP> and highpressure fluid passes via the connection 65 into the compartment 34 so holding the valve head 61 on its seat. The high-pressure fluid passes via the orifice 41<SP>1</SP> to the coil 17 which now acts as a condenser. Gaseous fluid from the coil 13 which now acts as an evaporator returns via the orifice 40<SP>1</SP>, the valve seat 38 and the outlet 44 to the suction side of the compressor.
Patent GB-1504108-A (GB)
Title: Membrane filtration plant
IPC: B01D63/06
Filed: 1976-07-02
Abstract: 1504108 Membrane filtration FRIED KRUPP GmbH 2 July 1976 [10 July 1975] 27699/76 Heading B1X A membrane filtration plant comprises a number of parallel tubes 9, each having thickened ends 8, having holes in its wall for the outflow of filtrate and containing a tubular membrane 5 which projects beyond the ends of the tube, connecting pieces 2 joining the tubes, each connecting piece including a base plate 1 which abuts against the ends of a pair of tubes and being attached to said tubes by screws passing through the base plate and engaging a clamp 7 having sockets receiving the tubes, tubular members 4 disposed within the projecting ends of the membranes and sealing elements 3 surrounding the projecting ends of the membranes which urge the ends of the membranes into sealing engagement with the tubular members and also form seals between the base plates and the ends of the tubes, the sealing elements being accommodated in recesses in the base plates or in the thickened ends of the tubes. A lining 10 of porous material e.g. paper, sintered metal or sintered plastic may come between the membrane and the tube walls.
Patent GB-1493719-A (GB)
Title: Mechanical printers
IPC: B41J2/31
Filed: 1975-07-02
Abstract: 1493719 Selective printing SIEMENS AG 2 July 1975 [4 July 1974] 27790/75 Heading B6F A mosaic printer comprises a type band DT provided with dot-printing elements DN, the type band being driven continuously past impression members DA. The elements DN may be provided on resilient fingers F or on resilient bridge members (E, Fig. 3, not shown).
Patent GB-656301-A (GB)
Title: Conveyor belt driving units
Inventor: DUNCAN ANGUS WELLESLEY
IPC: B65G23/34
Filed: 1948-10-26
Abstract: 656,301. Driving endless-belt conveyers. MINING ENGINEERING CO., Ltd. Oct. 26, 1948, No. 27831. [Class 78 (i)] The idle end bearing of the driving drum shaft of a driving unit for a belt conveyer has a housing which spigots into a side plate of the unit and is of greater (spigot) diameter than the drum, and the shaft engages its driving gear slidably so that when the housing is removed the drum and shaft may be slid out without disturbing any other parts. As shown in Fig. 1 the drums 1, 2 of the driving unit described in Specification 656,302 are each keyed to a shaft 3, 4, one end of which is formed with splines adapted to engage internal splines 5 in driving gear wheels 6 and 7. The other end of each shaft is mounted in a bearing 9, 10 in a housing 11, 12 spigotted into and bolted to the side plate 13 of the unit. The diameter of the apertures in the plate 13 into which the housings 11, 12 fit are greater than the diameter of the drums 1, 2 so that when the bolts holding the housings are removed the drums 1, 2 may be withdrawn through the apertures.
Patent GB-202549-A (GB)
Title: Improvements in or relating to long time pasteurizers
IPC: A23L3/16
Filed: 1922-10-13
Abstract: 202,549. Larsen, M. Oct. 13, 1922. Sterilizing milk. - In apparatus for pasteurizing milk by the " holding " method the inlet and outlet valves are operated by means connected with the stirrers, so that the apparatus can only be emptied and refilled after the stirrers have made a definite number of movements. In the arrangement shown, the pasteurizing-vessel 4 is divided into four compartments 6, each of which is connected to the inlet conduit 24 and the outflow conduit 26 through a three-way cock 21. The cocks 21 are operated from a spindle 18 on which is a starwheel 17 driven by a pin 16 on a ratchet-wheel 12, which is driven from a rock-shaft 8 carrying the stirrers 9 by a pawl 15 and the connections shown.
Patent GB-207335-A (GB)
Title: Improvements in rheostats for electrical purposes
Filed: 1922-10-14
Abstract: 207,335. Saville, H., and Thornton, C. H. Oct. 14, 1922. Variable resistances; sets of resistances. - A rheostat unit providing independent control of the current supply to a number of points, such as thermionic valves in wireless apparatus, with or without additional common control, comprises a central metallic part A carrying and electrically connected to a series of pivoted arms or other contacts equal in number to the number of points and contacting with successive turns of separate helical resistance coils G, H, J in grooves in a base. The ends R, P, Q of these coils are connected to the valves or other points the current to which is controlled by arms K, L, M operating the contacts. Additional common control of the current to all points may be provided by a central resistance c similar to, but separate from, the other resistances and co-operating with a contact D in electrical connection with part A and operable by a central knob, the current supply being connected to end o of resistance c and being cut off from all the points, for instance, from all valves during intervals between periods of reception of wireless telephony, by moving contact D to the " off " position without altering the adjustment of arms K, L, M. Instead of being pivoted at separate points as shown, the arms K, L, M may be connected to the corresponding contacts by concentric sleeves. Frictional or other means may be provided to retain each contact in position during operation of other contacts.
Patent GB-1027334-A (GB)
Title: Improvements in fluid filters
Inventor: STRIPP PETER WILLIAM
IPC: B01D25/26
Filed: 1962-07-19
Abstract: 1,027,334. Fluid filters. TECALEMIT (ENGINEERING) Ltd. July 12, 1963 [July 19, 1962], No. 27916/62. Heading B1T. A filter described with reference to an air cleaner for I.C. engines comprises a casing 1 having an inlet 8, an outlet 2 and steps 4, 5 carrying filter supports 9,10. As seen in the vertical plane shown in Fig. 1 the supports extend part way across the casing to form passages 11,12 for the air flow but in the vertical plane at right angles to this plane (Fig. 2, not shown) the supports extend the whole way across to rest at both ends upon the steps. A dividing wall 15 separates the supports 9,10 and the latter carry filter pads 13,14. The air on entering divides into two paths, one path including the pad 14 and passages 19,11 and the other path including passages 12, 21 and pad 13, the two paths re-joining in space 20. The pads are preferably formed of synthetic fibres, e.g. fibres of a copolymer of vinyl chloride and acrylonitrile as disclosed in Specification 1,027,333. Alternatively, the pads may be made of a sheet or a stack of sheets which may be pleated, of filter paper. A felt material could also be used.
Patent GB-1406339-A (GB)
Title: Process for polymerizing alpha-mono olefins
IPC: C08F2/00
Filed: 1973-06-12
Abstract: 1406339 Regulated catalytic olefin polymerization MITSUBISHI CHEMICAL INDUSTRIES Ltd 12 June 1973 [24 June 1972] 27930/73 Heading C3P Alpha monoolefins are polymerized in the presence of (a) chromium oxide on a support, (b) an organoaluminium compound, and (c) a molecular weight regulator of the formula in which A is an aromatic ring or condensed aromatic ring, and R 3  and R 2  are H, halogen, alkyl, alkoxy or aromatic group or together form an aromatic group, and in a hydrocarbon diluent (d). The process may be carried out in the presence of hydrogen. Component (a) may be a catalyst-polymer mixture obtained by initial partial polymerization in the presence of (a), (b) and (d). In examples, ethylene is homopolymerized or copolymerized with propylene using as catalyst (a) CrO 3  on silica, and (b) Et 2 AlOEt or AlEt 3  and as regulator (c) indene, methoxy indene or fluorene.
Patent GB-628797-A (GB)
Title: Improvements in metal flooring, treads for staircases and the like
IPC: E04C2/42
Filed: 1947-10-18
Abstract: 628,797. Metallic fabrics. BETTLES, J. W. E. Oct. 18, 1947, No. 27935. '[Class 45] [Also In Group X] A metallic fabric comprises parallel metal strips arranged face to face, with intermediate corrugated bars whose corrugations are alternately fixed to one strip at or near its top and to the adjacent strip at or near its bottom. The corrugations in the bars 3 shown are straight at the tips where they are welded to the faces, of the strips 1, the welding metal 3b, 3c, being applied to the undersides of the tips to form supports therefor.
Patent GB-1118974-A (GB)
Title: Laminate
IPC: D06F83/00
Filed: 1966-06-22
Abstract: 1,118,974. Laminates. RHONE-POULENC S.A. 22 June, 1966 [22 June, 1965], No. 27968/66. Heading B5N. A laminate comprises a sheet of elastomer or flexible synthetic polymer 1 to 5 mm. thick, a cellular sheet of elastomer 5 to 10 mm. thick and with a compressibility of from 50% at 2 kg./cm.<SP>2</SP> to 80% at 1 kg./cm.<SP>2</SP> and a tightly woven fabric sheet weighing from 200 to 400 g./m.<SP>2</SP> and coated with 5 to 10% by weight of an elastomer or a resin; all the materials of the laminate being able to withstand a temperature of 250‹ C. The elastomers used are suitably silicone elastomers, and preferred flexible synthetic polymers are polytetrafluoroethylene and polytrifluorochloroethylene and the fabrics are suitably glass fibre fabrics. The non- cellular elastomer sheet may be reinforced e.g. by a fabric stiffened by a phenolic resin. The cellular sheet may be prepared using a separate blowing agent or utilizing a siloxane containing Si-H bonds. The woven fabric sheet is preferably only lightly coated with elastomer so as to retain its porosity. Suitably the woven fabric sheet is coated with silicone adhesive, and is formed so as to envelop the preformed laminate of the cellular and non-cellular elastomer sheets.
Patent GB-469638-A (GB)
Title: Manufacture of new vat dyestuffs
IPC: C09B3/00
Filed: 1936-02-04
Abstract: A vat dyestuff is made by reacting pyrene-monophthaloylic acid and phthalic anhydride in equimolecular proportions at a raised temperature in presence of a condensing agent, such as aluminium or ferric chloride, and advantageously in presence of a neutral alkali salt such as sodium or potassium chloride.  The product dyes cotton yellow-orange shades of good fastness.  An example describes the use as condensing agent of a mixture of aluminium and sodium chlorides. Pyrene mono-phthaloylic acid is made by condensing pyrene with phthalic anhydride in an organic solvent or diluent in presence of an aluminium halogenide at a temperature of 80--100 DEG  C.
Patent GB-796663-A (GB)
Title: Fastening
Inventor: HERZBERG GUNTHER JAKOB
IPC: A44B11/25
Filed: 1956-09-13
Abstract: 796,663. Hook fastenings. MABRO & CO., Ltd. Sept. 13, 1956, No. 28054/56. Class 44 [Also in Group VII] A fastening suitable for a necklace, wristlet or the like comprises two complementary plate like members 1 and 2, each having a central transverse shoulder 3 so as to form a foot portion or tail 5 which is offset from the remainder or head portion 4 thereof, which foot portions are adapted for attachment to a necklace, wristlet or the like, in which the tail of one member is formed with an interior slot 10 to receive the head of the other member, the latter being provided with exterior slots 12 in opposite sides of the tail thereof and so arranged that the members when in locking engagement lie superimposed with the head of one member over the tail of the other and the shoulders abutting against one another, in which position, the opposite side pieces of the interior slot in one member are entered into the exterior slot of the other member, release of the fastening being obtained by relative displacement of the members to a position where one member can be turned to enable the head thereof to be withdrawn through the slot. As shown, a boss 16 formed on the member 2 is received in a recess 17 on the member 1. The head portion and the boss 16 may be set with brilliants.
Patent GB-865072-A (GB)
Title: Electrostatic printing
IPC: G03G5/05
Filed: 1957-09-05
Abstract: 865,072. Electrophotographic film. RADIO CORPORATION OF AMERICA. Sept. 5, 1957 [Sept. 25, 1956], No. 28058/57. Class 37. A film for use in electrophotographic printing comprises particles of photo-conductor dispersed in a mixture of a high styrene butadiene copolymer and a methylated paraffin resin. In an example 35 parts by weight of zinc oxide, 5 parts of a high styrene butadiene copolymer, 5 parts of a methylated paraffin resin, 2 parts of a plasticizer and 50 parts of the solvent toluene are ball-milled to form a slurry which is then coated on a paper backing. The resulting film is flexible, non-adhesive and hydrophobic.
Patent GB-296919-A (GB)
Title: Improvements relating to the cracking and fractionation of hydrocarbon mixtures and to apparatus therefor
Filed: 1927-10-22
Abstract: 296,919. Arnold, C., (Standard Development Co.). Oct. 22, 1927. Hydrocarbons, cracking; column stills.-Petroleum oils to be cracked and fractionated are passed through a heating-apparatus such as a bank of tubes 1, a heat-retaining passageway, such as the lagged drum 2, and a number of fractionating towers 4, 9 connected in series, the last tower receiving vapours at or near the middle of its height from the preceding tower, and having at its upper end means for controlling reflux which are independent of the supply of oil to be cracked. Both towers have controlled cooling-coils at their upper ends, and the final tower 9 has also a heating coil 11. Heavy oils condensed in the tower 4 are led off from the tray 7, while kerosene and gasoline from the tower 9 are taken off through the cooler 14 and condenser 16 respectively. A pressure release valve R is interposed between the cracking-drum 2 and the fractionating towers.