baber/WOPTO huggingface dataset:
Patent GB-825604-A (GB)
Title: Process for extracting and separating niobium and tantalum
IPC: C01G33/00
Filed: 1956-02-29
Abstract: Niobium oxychloride and tantalum pentachloride are separated by extraction with an inert solvent in the absence of water.  The initial mixture is prepared by converting an oxide material such as an ore, concentrate, slag or mixture of oxides with chlorine and a reducing agent, to a mixture containing niobium at least to a major extent as oxychloride and tantalum at least to a major extent as pentachloride.  The chlorination may be performed at 400-1000 DEG  C. in a shaft or horizontal tube furnace, and it is necessary in order to prevent reaction of the resultant vapours with the waste chlorination gases, to permit contact therebetween for at most a few seconds, e.g. by diluting with chlorine-freed spent reaction gas or by providing a conduit which is very short or of very small cross-section, between the chlorinator and the condenser.  Other elements which may be present in the oxide material and which are chlorinated are titanium, tin, manganese and silicon: these may be separated at different temperatures.  In the selective solution of the chloride-oxychloride mixture, solvents referred to are aliphatic and aromatic compounds, preferably halogenated and containing up to three carbon atoms, e.g. bromoethane, chlorethane and carbon tetrachloride: titanium tetrachloride, silicon tetrachloride, tin tetrachloride, phosphorous trichloride, carbonyl chloride, thionyl chloride, sulfuryl chloride and liquid sulphur dioxide.  A mixture of solvents may be used.  The dissolution may be effected under atmospheric or superatmospheric pressure and at room or raised temperature, e.g. the boiling point of the solvent employed, and may be performed in a grinding apparatus or continuously in a counter-current method.  After separation of the solution from the residue the tantalum pentachloride may be obtained by distilling off the solvent or by cooling and crystallization.  Both the soluble and the residual substances may be purified by sublimation.  Examples illustrate the chlorination of briquettes of sugar charcoal, niobium and tantalum pentoxides at 550-600 DEG  C. or at 1000 DEG  C. followed by precipitation of the chlorides in an air-cooled condenser, pulverization and multiple extraction.  In some of the examples, the insoluble portion (mainly niobium) may be sublimed in vacuo to give a residue rich in tantalum and a sublimate rich in niobium.  French Specification 973,896 and U.S.A.  Specifications 2,537,316, 2,481,584, 2,443,254 and 2,427,360 are referred to in connection with the prior art.
Patent GB-256923-A (GB)
Title: Improvements in or relating to portable electric lamps for miners
IPC: F21L4/00
Filed: 1926-03-08
Abstract: 256,923. Daloz, J. G. Aug. 17, 1925, [Convention date]. Battery iamps; cut-out arrangements.-In miners' safety lamps of the kind wherein the electric circuit is broken when the protecting glass fractures, the guide for the central contact plunger of the bulb-holder is joined to the base of a chamber 1 that is closed bv a flexible diaphragm, and the contact plunger is perforated to communicate the gas pressure within the globe to the diaphragm. This makes contact with a plate 2 that. presses on a battery terminal. A spring 3 assists to break contact when the gas pressure falls. Air or gas is passed into the globe through a valve 4 of the bicycle-valve type, and this serves also as a bolt for securing the bulb-holder to the base plate and as an electric conductor between one of the battery terminal plates and the bulb-holder socket.
Patent GB-185141-A (GB)
Title: Improvements in or relating to machines for cutting cheese and other substances
IPC: B26D3/24
Filed: 1921-02-26
Abstract: 185,141. Mellor, W. H., and Mellor, L. Feb. 26, 1921. Cheese cutters.-A machine fur cutting definite weights of cheese from a round comprises a rotary table 5 on which the cheese is held by means of pivoted knife-like blades 22 which are projected through apertures in the table by the operation of a central sliding sleeve 25 by a lever 26. The knife 32 is pivoted on a bracket 29 and a projection 35 on the knife frame is adapted to engage a lever 34 and thus actuate an extension of the blade 22 which mav be under the knife so as to press this blade 22 out of engagement with the cheese before cutting commences. The table is rotated through change gearing or direct through a a pinion 9 and rack 8, the pinion being operated in one direction only by a ratchet or clutch from the lever 13 which cam be oscillated between stops to regulate the movement of the table and thus the amount of cheese cut. Two of the engaging blades 22 may be placed in close proximity to one another so that the last portion of cheese is held firmly during cutting. The rotation of the table mav be effected from the movement of the knife. The table may also be provided with a number of concentric circles whereby the cheese may be centred. To prevent the table from tilting it is supported by adjustable posts 37.
Patent GB-667995-A (GB)
Title: Improvements in magnesium base alloys
IPC: C22C23/04
Filed: 1950-03-15
Abstract: A magnesium-base alloy having high yield strength under compression has the following composition: Li, 6-12 per cent; Zn, 7-25 per cent; Ag, 1-10 per cent; Mg, the balance.  The alloy may be made by melting Mg under about one-tenth of its weight of a flux composed of 3 parts by weight of LiCl and 1 part by weight of LiF previously dehydrated at about 1,600 DEG F.  Zn and Ag are added at about 1,300-1,400 DEG F and Li is added at about 1,250 DEG F under an inverted ladle.
Patent GB-712454-A (GB)
Title: Improvements in or relating to ever-ready cases for photographic cameras
IPC: A45C11/38
Filed: 1952-03-13
Abstract: 712,454. Ever-ready photographic camera cases. HEIDECKE, R., [trading as FRANKE & HEIDECKE]. March 13, 1952 [June 6, 1951], No. 6536/52. Class 98(1) The case, preferably for a twin lens roll film camera, the front wall of which can be folded down to expose the camera objectives, has a flap 4 which is let into the smooth rear wall 1 of the case and can be pivoted out of the latter preferably against spring action, and which forms a closure for an exposure or depth of focus table 8 on the rear wall of the camera. The flap bearing on its inner face a writing surface 9 and containing in the writing surface adjustable scales 12, 10 of film speed and type of film. Preferably said scales consist of rotatable discs or slides which can be read through windows in the writing surface and are provided with notches 14 engagable by the point of a pencil. The case aperture closed by the flap may be covered by a transparent plate.
Patent GB-273211-A (GB)
Title: Improvements in or relating to cooling devices for the fuel injection nozzles of internal combustion engines
IPC: F02M53/04
Filed: 1927-03-09
Abstract: 273,211. Schaer, C. June 24, 1926, [Convention date]. Cylinders receiving liquid fuel. - The cooling medium for the fuel injection nozzle 6 has a low boiling-point and remains in the chamber 3, its vapour being condensed in the upper part of the chamber, which has a jacket 14 through which water is circulated. The appropriate, temperature of the nozzle for different fuels is determined by varying the boiling-point of the cooling medium by adjusting the relief valve 12. Oils or distilled water may be used. The chamber 3 is provided with ribs 11.
Patent GB-550914-A (GB)
Title: Improvements in or relating to surfacing, boring, milling, drilling and like machine tools
IPC: B23B29/034
Filed: 1942-05-15
Abstract: 550,914. Rotary tool-heads. TULLIS, Ltd., D. & J., and WILSON, R. May 15, 1942, No. 6610. [Class 83 (iii)] Rotary tool-heads for boring and facing machines have the tool slide fed by a planetary pinion engaging a fixed scroll. Holders 31, 32 for facing tools are carried by a slide moving in dovetail guides on a head 12 bolted to the driving gear 10 keyed at 11 to the spindle 2. A slot in the slide permits a boring bar &c. to be used simultaneously with the facing tool, and the slide may be clamped by a hand screw forcing a pad against one of the guides. Nuts 24, 25 carried by the slide engage screws 17, 17a, of opposite hand, provided with ball thrust bearings 21 and bevel wheels 16 driving through spring loaded slipping clutches 18 and driven by bevels on a shaft carrying a pinion 15 with teeth shaped to engage either a scroll 34a or 35a on a casing 35 carried by the slide 1. The casing carries pinion nuts 38 that support it by means of fixed screws 37, and a thrust ring 39 mounted on one of the nuts has three flutes 391 that are engaged by a spring pressed ball 42 to determine positions of the nuts and consequently of the casing 35 corresponding to forward, neutral and reverse for the pinion 15. The pinion 8 that drives the gear 12 is slidably disengaged when it is required to drive the spindle 5 at a higher speed than for facing. This sliding can only take place when the pinion 15 is in neutral in which position only a projection 45 sliding, on a bar 46 with the pinion 8, can enter a slot 44 in the ring 39. The ring is then locked so that the facing slide cannot be operated at extreme speeds. The nut pinions 38 are connected by teeth on a ring and one of the pinions has a handle for effecting return. When the head is at rest a slide, (not shown), can be moved to uncover a hole permitting a hand crank 49 to engage the end of one of the feed screws for manual positioning of the slide. When the slide is moved a projection on it operates a switch to stop the driving motor. Specification 499,945 is referred to.
Patent GB-1211611-A (GB)
Title: Improvements in or relating to colour television receiver apparatus
Inventor: SPANNHAKE DIETER
IPC: H04N9/28
Filed: 1968-02-09
Abstract: 1,211,611. Cathode - ray tube circuits. FERNSEH G.m.b.H. 9 Feb., 1968 [9 Feb., 1967], No. 6662/68. Heading H4T. In a three-gun colour television receiver sawtooth currents of horizontal frequency amplitude modulated at the vertical frequency and derived from a dynamic pin-cushion correction circuit for the vertical deflection are added to horizontal frequency currents of parabolic and of sawtooth waveform flowing in the red and green convergence coils. This arrangement reduces errors in convergence caused by the operation of the pin-cushion correction circuit. Fig. 4 shows the described embodiment in which a pin-cushion correction circuit 4 (stated to be known), supplied with vertical frequency deflection currents from the vertical deflection coils 2, 3 generates horizontal frequency sawtooth voltages amplitude modulated at the vertical frequency V. These are then added to the conventional convergence correction voltages comprising horizontal frequence sawtooth and parabolic waveforms provided at terminals 22, 22<SP>1</SP> and 23, 231 respectively and the combined voltages supplied to adding amplifiers 6, 7 which convert the voltages into corresponding currents for the red and green convergence coils K R , K G  respectively. In the arrangement of Fig. 4, the voltages V are applied in opposite phase to amplifiers 6 and 7 so that only distortion at the upper and lower edges of the picture can be corrected. For correcting distortion at the lateral edges the voltages V must be of the same phase and to allow both distortions to be corrected the circuit of Fig. 4 is modified by the addition of the potentiometer arrangement shown in Fig. 5.
Patent GB-428720-A (GB)
Title: Improvements in and relating to a method and apparatus for the production of glass wool or other inorganic fibrous material
IPC: C03B37/06
Filed: 1934-03-02
Abstract: 428,720. Glass wool. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(Owens- Illinois Glass Co.; 961, Wall Street, Toledo, Ohio, U.S.A.) March 2,1934, No. 6705. [Class 56] [See also Groups V, XII, and XIII] Threads or fibres of glass or other inorganic material are made by drawing a continuously flowing stream of the molten material into a very fine thread by means of an elastic force applied to the surface of the stream in the general direction of its flow. The glass or other material is melted in a furnace which comprises a doghouse 13, Fig. 5, for the introduction of the batch, a melting chamber 12, and a refining chamber 15 which is separated from the chamber 12 by a wall 16 provided with a throat 17. The glass flows from the chamber 15 into a forehearth 18 having an outlet 23 beneath which a refractory bushing 24 is secured. The furnace is heated by means of burners 14, 21. The bushing 24 is formed with a V-shaped channel 26, Fig. 7, which is lined with a plate 27 of platinum. A series of very small apertures 30 through the lower edge of the platinum lining permit a continuous flow of glass, and the platinum is electrically heated in order to raise the temperature of the glass. A strainer 38 of platinum gauze prevents stones &c. from interrupting the flow through the apertures. A blower 40, arranged beneath the channel 26, comprises blocks 41 formed with pressure chambers 42 which communicate by means of narrow channels 48 with a passage 44. Air or steam under pressure is supplied to the chambers 42 and issues from the channels 48 in converging sheets which pass downwards through the passage 44. The blasts of gas, moving at high velocity, envelop the small streams of glass, flowing downwards through the passage 44, and draw them into continuous threads of very fine diameter. The apparatus may be used for producing a loosely matted mass of fibres which weighs less than one pound to a cubic foot of volume. The elasticity is such that the mass can be compressed to less than half its volume, but expands to its original volume when the pressure is removed.
Patent GB-687721-A (GB)
Title: Improvements in or relating to circuit arrangements for operating cathode ray tubes
IPC: H01J29/78
Filed: 1950-03-17
Abstract: 687,721. Cathode-ray tubes. GENERAL ELECTRIC CO., Ltd., and ALLARD, L. S. March 19, 1951 [March 17, 1950], No. 6737/50. Class 39(i) [Also in Groups XL(b) and XL(c)] In a cathode ray circuit arrangement in which the tube comprises a central electrode 2 and an outer coaxial electrode between which a deflecting voltage is applied to deflect the circular trace radially, the outer electrode is in two parts 7, 8 separated by an insulating gap, the part 8 being earthed and electrodes 2, 7 being connected to a balanced deflecting circuit so as to have voltages equal in magnitude but opposite in phase. This is stated to reduce the distortion of the spot which would occur if a deflecting voltage of double the magnitude were applied to the central electrode alone. The device may be a distributer with a plurality of targets, or as illustrated, a radar device with a single fluorescent target formed on the tube end wall. The central electrode 2 of copper nickel alloy may be frusto-conical or conical, may be solid or hollow and, as shown, is connected to copper block 4 serving as a terminal; coatings 7, 8 are of graphite. A push-pull circuit 15 is connected between electrodes 2 and 7, and the latter electrodes are also connected to the H.T. supply 12 via one megohm resistances 13, 14 respectively. The sense of connection of the push-pull circuit may be such that the radial deflections are either inwardly or outwardly. The coating 8 and final gun anode are connected by leads at 16 and earthed at 17. The tube may have deflecting coils or plates to produce the circular scan. The Provisional Specification states in addition that electrode portion 8 may be wholly in the tube neck. One or more post deflection acceleration electrodes may be disposed in the gap 9. Both parts of the graphite coating have side terminals similar to 10.
Patent GB-1505111-A (GB)
Title: Apparatus for permitting the filling of a liquid reservoir without overflow
IPC: G05D9/02
Filed: 1975-02-18
Abstract: 1505111 Filling fuel reservoirs without overflow VOLUCOMPTEURS ASTER BOUTILLON 18 Feb 1975 [18 Feb 1974 16 April 1974 30 Jan 1975] 6751/75 Heading B8T [Also in Division F2] Apparatus which prevents the overfilling of, e.g., an underground petrol tank, but which allows complete emptying of the filling conduit comprises: an automatically operated level responsive valve which closes or restricts the liquid flow path when the level reaches a certain level within the tank; an upstream valve which is manually closed when the automatic valve is moved to its closed or flow restricting position; and an arrangement whereby the pressure in the filling conduit between the valves is reduced so that the automatic valve opens if it was closed or reduces the amount of flow restriction whereby the conduit is emptied. The valve is damped to prevent banging. In a form where the automatic valve completely closes the filling conduit the pressure is reduced by opening a small branch line located in the conduit between the valves. The automatic valve is operated by a float, Figs. 1-6 (not shown).  In another form the pressure is reduced by providing permanently open bleed lines through and/or by-passing the automatic valve such that the pressure on both sides of the automatic valve are equalized. The valve then re-opens under the action of the torque from the float which is mainly above the liquid level, Fig. 7 (not shown). In another form, Fig. 13, the automatic lever valve 85 comprises auxiliary first and second secondary valves 89, 94 both linked to the float. When the float reaches a certain level it acts via a lever linkage to pull on spring 83 and flexible wire 84 such that automatic valve 85 and first auxiliary valve 89 close against their respective springs. The liquid level and float continue to rise until the second auxiliary valve 94 slides on post 97 and closes aperture 88 in valve 85. The only possible flow left is through the aperture 98 and via any by-pass bleed lines (not shown) The upstream manually operated valve being closed at this stage allows a relatively slow reduction in pressure through the apertured disc 94 and any bleed lines such that first auxiliary valve 89 reopens to allow conduit emptying after the manual valve is re-opened slowly. If, however, it is forgotten to close the manually operated upstream valve further tension in spring 83 causes a plate 102 to block the aperture 98 in disc 94 and prevent further filling. The automatic valve may be damped by a counterweight float or by a fluid filled bellows between it and its valve seat. A line 106 is closed by valve 109 during filling but allows air to flow from line 29 during emptying of the conduit.
Patent GB-1371474-A (GB)
Title: Data processing system
IPC: G06F12/16
Filed: 1973-02-12
Abstract: 1371474 Storage systems INTERNATIONAL BUSINESS MACHINES CORP 12 Feb 1973 [24 April 1972] 6756/73 Heading G4A In a data processing system (Fig. 1A) having q basic storage modules BSM 1  ... BSM q  and s spare storage modules with associated multi-bit input and output status registers 10, 20 each normally in an even parity state, when one of the storage modules or status registers fails it is switched out of operation together with its associated module or register and the states of status registers associated with remaining higher order modules are stepped to the next even parity state in a predetermined sequence. As described when an error is detected, failure response means 8 is operative, after diagnosis of the bit position failure, to (1) switch the associated input status register ISR i  to odd parity if the failure is in the basic storage module BSM i , (2) switch out the module BSM i , (3) check an ordered list L of failed basic storage modules to find the next appropriate spare module, (4) enter the failed basic storage module in the ordered list and (5) switch the higher numbered input status registers to their next even parity state in the sequence. Data is read out from the storage modules via an output configuration network ARN comprising, for each bit d i , s+1 AND gates (Fig. 2, not shown) one of which is enabled in dependence on how many (if any) of the preceding basic storage modules BSM 1  ... BSM i-1  have failed. The data is stored using known error correction codes and fed to a corrector 24 after which it is read in via an input reconfiguration network 12 controlled by the input status register 10. The network 12 comprises, for each storage module, logic circuitry (Fig. 3A-3G, not shown) including an AND gate for each bit which could be stored in the associated module. After data has been read out, corrected and re-entered into the storage module the states of the output status register are brought into agreement with the states of the input status register. To determine whether an error is due to a storage module or a status register fault the contents of the input and output status registers are compared. If they are equal the fault is assumed to be in the storage module. If they are unequal, in for example the ith position and i is not a member of the ordered list L, if ISR i  has odd parity then the failure is in this register and all ISR j , j greater than i, are forced to their next state except for j belonging to the list L. If it has even parity the failure is in the output status register OSR i  and the input status register ISR i  is forced to the state of the output register OSR i  As before the states of all subsequent registers ISR j , j greater than i, are changed. If i belongs to the list L and the input status register ISR i  has odd parity then the failure is in the output status register OSR i  and an odd parity state is forced into that register.
Patent GB-439344-A (GB)
Title: Improvements relating to the manufacture of articles from plastic materials
IPC: B29C48/08
Filed: 1935-03-04
Abstract: In a process for the manufacture of films, bands, threads and similar articles from plastic compositions such as cellulose derivatives, resins, rubber, gum or gelatine, wherein the composition is spread on a supporting surface, e.g. a drum or endless band, to shape it and is then subjected to the action of an extraction agent to remove solvent materials, the extraction agent is heated and the support cooled to a temperature considerably below that of the agent, in the case of a gaseous extracting agent, and when a liquid is being used, the liquid is cooled and the support heated to a considerably higher temperature.  In this way solidification is accelerated.  The invention is particularly useful for the production of articles containing filling or other materials, which must have a higher boiling point than that of the solvent.  Such substances may be added to the composition, or to the extracting agent from which they will be absorbed by the composition.  In an example a solution of cellulose acetate in 80 parts of methylene chloride and 20 parts of ethyl alcohol is spread on a surface maintained at 15 DEG  C. by means of a water jacket or otherwise.  Air heated to 80--100 DEG  C. is passed over the composition and after 5 or 6 minutes, the article may be removed from the support.  In another example a solution of divinyl formal in a mixture of 90 parts of methylene chloride and 10 parts of alcohol is employed.  In a third example a solution of nitrocellulose in methyl alcohol is spread on a drum immersed in water at about 4 DEG  C.  The drum is heated, e.g. by hot oil to 50 DEG  C.  The composition solidifies in less than 1 minute.  The composition may be spread on a support at ordinary temperature, the support then being heated or cooled.ALSO:In a process for the manufacture of films, bands, threads, and similar articles from plastic compositions such as rubber compositions, wherein the material is spread on a supporting surface, e.g. a drum or endless band, to shape it and is then subjected to the action of an extraction agent to remove the solvent materials, the extraction agent is heated and the support cooled to a temperature considerably below that of the agent in the case of a gaseous extracting agent, and when a liquid extraction agent is being employed the liquid is cooled and the support heated to a considerably higher temperature. Solidification is thereby accelerated.  The composition may be spread on a support at ordinary temperature, the support then being heated or cooled.