baber/WOPTO huggingface dataset:
Patent GB-263777-A (GB)
Title: Wired radio transmitting system
IPC: H04H20/84
Filed: 1926-12-07
Abstract: 263,777. Wired Radio, Inc., (Assignees of Duncan, R. D.). Dec. 23, 1925, [Convention date]. Wired-wireless systems; multiplex signalling. -Modulated high-frequency carrier currents conveying different broadcast programmes are fed simultaneously from a plurality of polyphase high-frequency generators 1, 2, 3 into a polyphase electric power distribution system, shown to the right of the Figure. Even harmonics are suppressed by feeding the modulated carrier-frequencies f<1>, f<2>, f<3> from the generators 1, 2, 3 to the input circuits of three pairs of balanced highfrequency amplifiers 58, 59 and 60, 61, and 62, 63 respectively. The triple-frequency harmonics are suppressed by the use of a three-phase transmitter, the input and output circuits of the amplifying tubes 58 - - 63 being connected in gamma. Other harmonics are eliminated by the use of suitable tuning means, 92 - - 103 in the outgoing lines. The generators 1, 2, 3 are connected in series with the distributing system. Current from the generator 1 passes through raised inductances 4, 7; 5, 8; and 6, 9, connected in gamma, the other generators 2, 3 being similarly connected by paired inductances to the input of the amplifier tubes.
Patent GB-1514933-A (GB)
Title: Lint removal in gas burners
IPC: F23D14/46
Filed: 1975-08-18
Abstract: 1514933 Gas burner D V GREAVES 18 Aug 1975 [12 July 1974 17 July 1974 29 Aug 1974] 31018/74 31701/74 and 37752/74 Heading F4T An aerated gas burner comprises a hollow body 1 having flame ports 3, a device 9 for supplying gas and air mixture, and a sheet metal gauze 12 extending across the path of the mixture flowing from device 9 to ports 3 and located in the body by two opposite edges of the sheet, at least part of a wall 5 of the body being adapted to allow the sheet to be slid out of the body. The flame ports are upset in a plate 2, and a mixing chamber 6 is welded to end plate 4 of body 1. A nozzle 11 supplies gas to be mixed with air in chamber 6, and is supplied to venturi 9. Gauze 12 is stiffened at its edge by strips of stainless steel 13, and rests on end plate 4, is located by channels 15 in body 1, and is removed from the body to clear lint, by removing a plug 14 from an aperture in end plate 5 and sliding the gauze out from the body. In a modification, the complete plate 5 is detachable from the body. The edges of the gauze can be located by flanges, shoulders, or channels. In a further modification, gauze 15 Fig. 3, sits on downwardly projecting flanges 18. Other arrangements of gauze are described in conjunction with drawings of provisional Specifications 31701/74, 37752/74 (not shown).
Patent GB-267213-A (GB)
Title: Improved means for protecting from theft articles of value displayed in shop windows, show cases and the like
IPC: A47F3/00
Filed: 1925-12-09
Abstract: 267,213. Barrett, G. S. Dec. 9, 1925. Showcases; shelves -Means for preventing the theft of goods displayed in showcases comprise a blind which is automatically operated tc screen the goods on the breaking of the window. Fig. 3 shows a display shell 30 which is engaged by a pivoted catch 28 connected to rods 2 having their forward ends in proximity to the window. Wires 33 at each side of the shelf pass over pulleys 36 and are secured to eyelets 34 adjacent to the glass 1, the other end of the wires 33 being secured to eyelets 35 on the vertical part of the shelf 30. When the glass of the window etc. is broken, the rods 2 are pushed inwards to trip the catch 28, a spring 31 then turning the shelf upwards until it is engaged by a retaining catch 38, the goods being held in fabric 37 extended by the wires 33. In further modifications, a grooved sliding shelf which engages with projections on a framing is adapted to move inwards by spring action when'the glass is broken, or hinged display flaps are carried by the sides of a showcase, the flaps normally resting on balls which are displaced by the rods 2 when the glass is broken.
Patent GB-675827-A (GB)
Title: Improvements in the production of iron powder
IPC: B22F1/145
Filed: 1950-12-21
Abstract: In a process for the manufacture of iron powder, carbon-containing iron powder in intimate mixture with a difficultly reducible compound is heated above 300 DEG C but below the melting point of any component of the mixture in a reducing atmosphere and then, if necessary, the mixture is converted to a finely-divided state.  The difficulty reducible compound may be a metallic oxide which may be mechanically mixed with the iron powder, or it may be a solution of a salt of the compound which is produced on heating.  The compound may be dissolved in water and made into a paste with iron powder which may be obtained by the carbonyl process.
Patent GB-922858-A (GB)
Title: Improvements in or relating to gas or air filters
Inventor: ABREY MAURICE
IPC: F24F13/28
Filed: 1960-09-09
Abstract: 922,858. Gas filters. R. G. DIXON & CO. Ltd. Sept. 8, 1961 [Sept. 9, 1960], No. 31180/60. Class 8(2). Each of a number of fabric bags a, Fig. 1, is open at the top, and the top is gripped firmly between an inserted ferrule h, Fig. 2, and the rim of a hole in a supporting plate g. The bags may be shaken by operation of a spring-restored grid i, Fig. 1. Alternatively, the supporting plate structure may comprise a sheet of rubber having holes in which the mouths of the bags are secured as above, the sheet being gripped between two metal sheets having correspondingly larger holes. A bar may be rigidly connected to the supporting plate or structure, or to the grid i, and this bar may be intermittently deflected and released by rotating star wheels to provide the shaking action. Specification 922,857 is referred to.
Patent GB-916072-A (GB)
Title: Improvements in and relating to the welding of tubes
Inventor: GOTCH RONALD WILLIAM
IPC: F22G3/00
Filed: 1958-10-30
Abstract: 916,072. Welding by fusion. FOSTER WHEELER Ltd. Jan. 26, 1959 [Oct. 30, 1958], No. 31216/60. Divided out of 916,071. Class 83 (4). In the internal fusion butt welding of tubes, the outer edge of the joint is backed by a metallic ring which becomes welded to the tubes. The ring may be an integral projection formed by machining a recess 42, Fig. 3, in one of the tubes 36 into which recess 42 the other tube 38 fits. The tubes 36 may be formed by machining grooves 32 in a header plate. Alternatively, a separate ring 10A or 10B, Fig. 1, is used, having an inner projection 16A or 16B fitting into recesses formed in a gap between the tubes. The joint may be externally surrounded by granular flux or inert gas.
Patent GB-1031305-A (GB)
Title: Improvements relating to closure caps and to methods of manufacturing such caps
IPC: B21D51/38
Filed: 1964-08-04
Abstract: 1,031,305. Closure caps. AMERICAN FLANGE & MANUFACTURING CO. Inc. Aug. 4, 1964 [Nov. 25, 1963; Feb. 11, 1964], No. 31245/64. Heading B8T. A metal closure cap 1, Fig. 9, comprises a top 2, a skirt 3, a tearing ear 7, a pair of scores commencing at points spaced from the lower edge of the skirt and having portions 15, 16 extending up the skirt in parallel relationship and portions 11, 12 extending at least part way across the top 2, and a pair of slits 17, 18 extending upwardly from the lower edge of the skirt, unscored but weakened portions 55, 56 being provided between the scores and the slits. In the embodiment shown, the slits 17, 18 are closed along their entire length, whereas in a modification, the slits are open towards their lower ends. The cap is formed from a blank, Fig. 4, score portions 15, 16 flowing outwardly and notches 24, 25 being provided at the sides of the tearing ear 7. In the modification, the notches have an increasing width towards the blank edge. When the blank is cupped to form the cap, the notches 24, 25 close up to form the slits 17, 18 and the flared score portions 15, 16 move together to form the parallel score portions in the cap. The cap may contain a resilient gasket 19.
Patent GB-655838-A (GB)
Title: Plug gauges
IPC: C22C1/02
Filed: 1948-12-03
Abstract: 655,838. Plug gauges. THOMPSON, S. V., and BARTLETT, R. Dec. 3, 1948, No. 31296. [Class 106 (ii)] A plug gauge, Figs. 1, 2, having adjustable gauging members 3 comprises a body 4 containing a central spindle tapered at one end 7 and movable endwise by screw means 11 engaging the other end and co-operating with markings on the body 4, the parts being so arranged that movement of the tapered end 7 towards the screw and indicating means displaces the gauging members 3 outwards. The gauging members 3 are pressed against the tapered end 7 by coiled springs 16 and the diameter to which the peripheral surfaces of the gauging members are ground is slightly less than the minimum diameter to be gauged to provide line contacts when gauging. The plug gauge may be locked by a screw 15. The gauging members 3 and their guides 5 may be of T cross-section as shown in Fig. 3.
Patent GB-1014891-A (GB)
Title: Improvements in or relating to fission product impermeable carbon bodies and method of making same
IPC: C04B35/52
Filed: 1962-08-15
Abstract: A carbon body with low permeability to fission products is made by steps which comprise impregnating pores of said carbon body with a liquid impregnant comprising a carbonaceous polymerizable substance which, upon application of heat, will undergo polymerization and then carbonization to deposit a carbon residue equal to at least 45% by weight of the liquid, clearing said impregnant from a proportion of the impregnant filled pores, whereby gases evolved from the said impregnant during subsequent curing and carbonizing can readily pass from the carbon body without cracking said body, curing said impregnant to cause polymerization of said carbonaceous polymerizable substance, and carbonizing said impregnant in said pores to deposit a substantial carbon residue therein, whereby an improved crack-free carbon body having lowered permeability to fission products is provided. The impregnating, pore clearing, curing and carbonizing steps are preferably repeated also preferably with an impregnant of progressively reduced viscosity. The clearing operation may be carried out by subjecting the carbon body to a pressure differential across the impregnating pores.  The preferred impregnant comprises a mixture of maleic anhydride and furfuryl alcohol and the impregnation may be carried out by first degassing the body and subsequently immersing in the impregnant and then subjecting the body to a series of changes in pressure between super atmospheric and sub-atmospheric whereby the impregnant is driven into the pores. An optional modification of the process dispenses with the pore clearing step in the third and subsequent impregnation, pore-clearing, curing and carbonization cycles.  A detailed example of rendering a graphite tube impermeable which entails six impregnating cycles is included and uses furfuryl alcohol and maleic anhydride as the impregnant. Reference has been directed by the Comptroller to Specification 874,592.
Patent GB-1427575-A (GB)
Title: Electric circuit arrangements for evaluating dc data signals
IPC: H04L25/06
Filed: 1973-07-02
Abstract: 1427575 Telegraphy SIEMENS AG 2 July 1973 [18 Aug 1972] 31378/73 Heading H4P An input circuit interposed between a line and a receiver, e.g. teleprinter or data system, comprises a threshold arrangement coupled to the line without conductive connection with the threshold level being determined by means of a non earth free adjustable auxiliary voltage source. In one arrangement a known inverter K1 is coupled through a transformer and rectifying diodes D1, D2 to a transistor T. If signal current applied to K1 rises slowly from zero to 40 mA, this is compensated up to a value of 20 mA by compensating current set for example at 20 mA by resistor R1 and supplied by a voltage source U stabilized by a Zener diode DZ, hence no current flows through T up to this point. If signal current exceeds 20 mA, this exceeds the threshold value and current flows through the base emitter path hence transistor T is rendered conductive. In another arrangement (Fig. 5, not shown) an opto-electric device (K2) provides a non- conductive coupling. The coupling may alternatively consist of a piezoelectric coupling element.
Patent GB-845994-A (GB)
Title: Improvements in photovoltaic cells
IPC: H01L31/06
Filed: 1956-10-16
Abstract: 845,994. Photovoltaic devices. INTERNATIONAL BUSINESS MACHINES CORPORATION. Oct. 16, 1956 [Oct. 17, 1955], No. 31479/56. Drawings to Specification. Class 37. A photovoltaic cell comprises a PIN junction semiconductor body the intrinsic region of which has surfaces for exposure to radiation admitted thereto without passing through either the P or the N type region. The distance between the PI and NI junctions should preferably be less than the transport length L which is defined by the equation L = #ÁVgT, where Á is the carrier mobility, Vg the width of the forbidden energy band, and T is the carrier lifetime. The thickness of the body in the direction of the incident radiation should be as small as possible consistent with being greater than the penetration depth of the incident radiation and great enough to keep the effective carrier lifetime due to surface recombination much greater than the effective lifetime due to volume recombination. In addition the surface of the intrinsic region may be treated by'known etching processes to reduce the surface recombination rate. In a preferred embodiment P and N zones of 1 ohm. cm. resistivity are arranged at opposite ends of a wafer of 50-60 ohm cm. intrinsic Ge. The device operates at optimum efficiency when the intensity of the incident light is just above the minimum necessary to keep the output' approximately equal to Vg. If very high intensities are expected the body thickness should be greater than L. The efficiency may be improved by using a system of reflectors to refocus and return light reflected from the body. The cell is responsive to radioactive radiation and a radioactive battery is envisaged utilizing a radioactive source which is either embedded in the intrinsic region or mounted near the body. A composite photocell is also described consisting of PIN bodies of Si, Ge and InSb mounted so that incident radiation passes through them in that order. The high energy photons produce electron hole pairs in the Si, whereas the lower energy photons pass through to the Ge or InSb which have narrower forbidden energy bands. This arrangement thus gives a highly efficient conversion to electricity of polychromatic radiation such as sunlight.
Patent GB-952083-A (GB)
Title: Cutting device for exposed photographic light sensitive material in web form
IPC: B26D5/32
Filed: 1960-09-13
Abstract: 952,083. Cutting webs. AGFA A.G. Sept. 13, 1960 [Sept. 15,1959], No. 31511/60. Heading B4B. [Also in Division B6] In a device for cutting exposed photographic light - sensitive material of web form, of the type including web-advancing pressure and driving rollers 14, 15 and a knife unit 19 which are controlled by a contact arrangement scanning contact marks, e.g. graphite lines, on the web, the device comprises a single reversible driving motor 36 which drives the roller 15 through an electromagnetic coupling 48 controlled by the contact arrangement and also drives the knife unit through a one-way coupling 54. The coupling 48 is provided on a driving- shaft 45 and the coupling 54 on a knife shaft 55 driven from the shaft 45 through a chain drive 53. The roller 15 is provided with a brake 51 on roller shaft 46 which is driven from the shaft 45 through gearing 49, 50. The contact arrangement is provided with a switch 61 operable by a cam 60 on the knife shaft, the switch being adapted, when the knife reaches its idle position, to switch back to advance the web. The coupling 54 may also be controlled by the contact arrangement.
Patent GB-871337-A (GB)
Title: Catalytic polymerization of ethylene
IPC: C08F10/00
Filed: 1957-10-09
Abstract: Polyethylene is prepared by polymerizing ethylene at a pressure of at least 200 p.s.i. in the presence of an activated catalytic mixture of an alkali metal and a hydrocarbon-soluble titanium compound in a mole ratio of the alkali metal to the titanium compound between 0,1 : 1 and 10 : 1, the catalytic mixture being actuated by heating at least 150 DEG C.  The catalyst may be activated before or during the polymerization and may be treated with hydrogen at elevated temperature before use in the polymerization. The alkali metal may be a high surface dispersion on an inert support e.g. gamma-alumina. Specification 871,338 is referred to.ALSO:An activated catalyst for the polymerization of ethylene comprises a mixture of an alkali metal and a hydrocarbon-soluble titanium compound in a mole ratio of the alkali metal to the titanium compound between 0.1:1 and 10:1, the catalytic mixture being activated by heating at at least 150 DEG C. The catalyst may be activated before or during polymerization and may be treated with hydrogen at elevated temperature.  The alkali metal may be in the form of a high surface dispersion on an inert support, e.g. gammaalumina.  In examples, catalysts are prepared from sodium, lithium, potassium, titanium tetrachloride, tetra-2-ethylhexyl titanate, and alumina.  Specification 871,338 is referred to.
Patent GB-1015119-A (GB)
Title: A new or improved hydro-pneumatic generator of compressed air by utilizing the surge of the sea
IPC: F03B13/24
Filed: 1963-08-09
Abstract: 1,015,119. Compressing gases. H. C. JONES. June 24, 1964 [Aug. 9, 1963], No. 31585/63. Heading F1N. An apparatus for compressing air by utilizing the wave surge of the sea comprises a tunnel 1 encased in concrete or masonary 3 and having an opening 2 facing out to sea, whereby waves entering the tunnel force air therein past a non-return valve, situated at the tunnel apex 5, into a reservoir, not shown. The backwash of the wave surge causes an automatic inlet valve at the apex 5 to open, allowing atmospheric air to enter the tunnel. The apparatus may also comprise several tunnels communicating with a single reservoir.
Patent GB-1244871-A (GB)
Title: Distillation of unsaturated esters
Inventor: HORN PETER EDWIN
IPC: C07C69/15
Filed: 1968-03-04
Abstract: 1,244,871. Distillation columns, heating means. IMPERIAL CHEMICAL INDUSTRIES Ltd. 10 Feb., 1969 [4 March, 1968; 4 July, 1968], Nos. 10289/68 and 31928/68. Heading B1B. [Also in Division C2] Two evaporators 3, 4 are connected as shown between a distillation column 1 and a reboiler 2, valves being provided so that only one evaporator is in use at a time. The apparatus may be used to separate acetic acid from vinyl acetate or allyl acetate by introducing the mixture into the column through line 10 and supplying a lithium salt through line 13. An ester/water mixture is removed through line 12, and acetic acid is discharged through line 11. The evaporator which is not in operation is discharged via filter 22 and extractor 18; and the solid deposit is cleaned out.
Patent GB-170774-A (GB)
Title: Improvements in and relating to toothed gearing
IPC: F16H1/22
Filed: 1920-11-12
Abstract: 170,774. British Thomson-Houston Co., Ltd., (General Electric Co.). Nov. 12, 1920. Toothed gearing comprises a pinion 1 driving two or more wheels 4, 5, which are made up of plates or discs 10 secured at their central portions and slightly apart at their peripheries so that they may yield to distribute the load. The spaces 11 of the wheels are staggered in relation to one another to render uniform the wear on the pinion. In the double helical gear shown, the first disc a on the left-hand side of each half of the wheel 4 and the first disc b on the right-hand side of each half of the gear 5 are about half the width of the other discs 10.
Patent GB-1466690-A (GB)
Title: Display apparatus
IPC: G09F9/37
Filed: 1974-07-19
Abstract: 1466690 Matrix displays DAI NIPPON INSATSU KK 19 July 1974 [30 July 1973 24 Oct 1973] 32069/74 Heading G5C Alpha-numeric display apparatus comprises a plurality of devices each comprising a pivoted plate 1 with opposite faces of different appearance, means 4 to limit rotation to 180 degrees in either direction and actuating means 5 delivering air jets to turn the plate in either direction. Square plates are turned by air from nozzles 6a, 6b. The plates are either black and orange, carry letters or painted with a phosphor. In other embodiments air jets are provided by a nozzle which can swivel or move laterally or by a fixed nozzle and a movable deflecting plate. In an array with swivelling nozzles, columns of nozzles are mechanically linked to solenoids and rows of nozzles are connected to individual air supplies. The position of the nozzles is set for each row successively and air is supplied to the rows sequentially. Alternatively air is supplied to a chamber behind the plate containing holes 25a, 25b above and below the plate axis. A vertically slidable member 27 opens or closes both holes and a horizontal member 26 selects one of the holes 25a, 25b. In an array the chamber extends behind all the plates; and members 26, 27 extend behind each row and column respectively.
Patent GB-537975-A (GB)
Title: Improvements in or relating to power transmission systems
IPC: B24B47/06
Filed: 1939-12-13
Abstract: 537,975. Hydraulic machines. ARMSTRONG, J. J. V. (Vickers, Inc.). Dec. 13, 1939, No. 32110. [Class 69 (ii)] In a hydraulic power transmission especially applicable for reciprocating the tables of grinding-machines, the table is reciprocated by a hydraulic motor comprising a piston 94 in a cylinder 92 the fluid for operating the piston being supplied by. a pump 10 driven by a motor 12, the flow of liquid being controlled by a main reversing valve 38 under control of a pilot valve 114, which is actuated by the. motor at the end of its stroke and acts also to block the exhaust duct of the motor while the valve 38 is being operated. A starting valve 158 is provided and the machine may be stopped automatically by a valve 166 operated by a cam 104 on a bracket 98 which reciprocates with the piston rod 96. This piston is fitted with adjustable dogs 100, 102 for operating the pilot valve, and one dog normally acts on a retractable pin which is withdrawn before reversal of the valve when it is desired to stop the machine by depressing the valve 166. In normal working the fluid passes to a relief valve 22, to a throttle valve 36 to the inlet of valve 38 thence via port 50, pipe 90 to the right end of cylinder 92. The fluid exhausts from cylinder 92 via pipe 88, port 48 of valve 38, to chamber 138 of valve 114 thence via pipes 140, 25 to tank 16. The action of the valve 22 and throttle 36 maintains a constant drop of pressure so that the velocity of the table is normally constant independently of the load. The time of reversal of the valve 38 and therefore of the dwell in the reciprocation is controlled by an adjustable throttle 78 which controls the rate of outflow of the fluid from the right end of the valve chamber and a similar valve 76 controls the outflow from the other end. With the valve 158 in the position shown the machine would be at rest owing to the pressure in chamber 20 being greater than that in chamber 28 which has free access to tank 16 via valves 158, 166 and conduits 30, 172, 164, 170, whereas the outlet from chamber 20 to tank is restricted by throttle 36 and restrictor nozzle 26. This causes depression of valve 22 and the return of the operating fluid via pipe 25 to tank 16. On pushing in valve 158 the valve 22 opens and the piston 94 is operated, and then the valve 166 rises under spring action and cuts off connection between valve 158 and the tank 16 with the result that the operations continue until the cam 104 is again brought into action. After each dwell the piston 94 is started with a smooth acceleration owing to the passage of the fluid through restriction devices 81, 83 which control the outlet of exhaust fluid from the ends of the valve 38. Check valves 84, 86 are provided to control the flow of fluid to the ends of the casing of the valve 38. Specifications 455,986 and 504,277 are referred to.