baber/WOPTO huggingface dataset:
Patent GB-522592-A (GB)
Title: Improvements in means for controlling aircraft engines
IPC: F02D9/00
Filed: 1938-12-10
Abstract: 522,592. Fluid-pressure servomotor-control systems. DODSON, E. Dec. 10, 1938, No. 36077. [Class 135] A boost control for supercharged aircraft engines of the kind provided with an air leak for varying the controlling effect has the air leak controlled by a valve operatively connected to a pressure sensitive device responsive to atmospheric pressure. In the arrangement shown in Fig. 1 the usual boost control 1 has a capsule housed in a chamber 3 connected on the one hand with the induction manifold 5 through a pipe 4 fitted with a restriction 10 and on the other hand with the carburetter intake 8 through a pipe 6 fitted with a Venturi contraction 9. 'The pipe 6 is provided with a manually operated leak control valve 7 and an automatically controlled leak valve 19. This valve is shown as actuated by a spring-loaded diaphragm 12 subject on one side to induction pipe pressure and on the other to the pressure produced in a forwardly facing intake 17 consequent on the translation speed and height of the craft. In a modification the flared intake is replaced by a Venturi the neck of which is connected to the diaphragm chamber so that the leak is decreased with increasing speed in place of increasing. The diaphragm may act on the valve 19 through a lever with an adjustable fulcrum. To prevent leakage past the spindle of the valve 19 the controlled fluid may pass through a Venturi 45 the neck of which is connected to an annular recess 42 surrounding the valve spindle. A modification is described having four leak control valves in series one actuated manually, one by induction pipe pressure, one by the difference between inductive pipe pressure and a pressure due to the translational speed and one actuated by a bellows connected to a thermal feeler responsive to the engine cylinder, blower or atmospheric temperature. These four leak control valves may be byepassed by a single manually operated valve. Specifications 419,113, 449,078, and 455,106, [all in Group XXVII], are referred to.
Patent GB-1075769-A (GB)
Title: Rotary-wing aircraft
IPC: B64C29/00
Filed: 1964-09-03
Abstract: 1,075,769. Helicopters. BÍLKOW G.m.b.H. Sept. 3, 1964 [Sept. 9, 1963], No. 36103/64. Heading B7W. A helicopter with inter-meshing rotors has mechanism which so controls the lag-lead movement of intermeshing blades that they move in substantial parallelism and at substantially similar tip-speeds. A fuselage 1 carries a fixed wing 2 at the extremities of which are mounted engine nacelles 23, 24, propellers 28, 29 and rotors 3, 4. Each rotor comprises rigid blade root portions- 10-13, 19-22 to which are articulated rotor blades 5-8 and 14-17 respectively, mechanism being provided at the articulations by means of which advancing blades are retarded and retreating blades are accelerated. Specification 943,813 is referred to as providing apparatus for this purpose.
Patent GB-1116471-A (GB)
Title: Electric pulse delay and regeneration circuits
Inventor: GLAZEBROOK ELLIS
IPC: H03K19/12
Filed: 1964-09-03
Abstract: 1,116,471. Pulse delaying and regenerating. ENGLISH ELECTRIC COMPUTERS Ltd. 3 Sept., 1965 [3 Sept., 1964], No. 36202/64. Heading H3T. A pulse delay circuit is described for receiving pulses, which pulses occupy random time periods of a series of successive equal such time periods, and reproducing the pulses in both true and inverted forms in the next succeeding time period. A clock pulse source 31 provides + 5 v. pulses in the last 40% of each time period and otherwise maintains - 3 v. such that only when the 5 v. input pulse, passing through an AND gate 9, 16, 17 and OR gate 18, 19, 20, and the 5 v. clock pulse coincide, transistor 25 conducts to build up energy in transformer 34- 35. When the clock pulse source reverts to - 3 v., transistor 25 cuts off and diode 36, previously cut off by the 5 v. clock pulse through resistor 38, now conducts, dissipating the energy stored in transformer 34-35 via winding 35, charging capacitor 41 until transistor 26 conducts. The dissipation of energy from coil 35 is not completed until after the start of the next 5 v. clock pulse, whereafter transistor 26 is maintained conductive by the charge on capacitor 41. When the clock pulse again reverts to - 3 v., at the end of the second time period, transistor 26 is rapidly cut off by the discharge of capacitor 41 through the much larger capacitor 39, via diode 37. During the conduction of transistor 26 (i.e. during the time period succeeding that of the input pulse), a positive potential is applied to the base of transistor 45 which therefore conducts and its collector potential, usually held at +5 v. through diode 48, is zero. Similarly, during this period, transistor 46 is cut off and its collector potential, usually at ground, is 5 v. Thus an input pulse is reproduced in true and complementary forms at 55, 54, respectively, one time period delayed. The transformer 34-35 may be replaced by a coil 34 and a capacitor coupling between the collector of transistor 25 and diode 36. Transistor 26 may be replaced by a diode corresponding to the base-collector junction, the output for transistor 45 being taken from the junction of diodes, 36, 40.
Patent GB-1402896-A (GB)
Title: Alkylation of aromatic hydrocarbons
IPC: C07C15/085
Filed: 1972-08-03
Abstract: 1402896 Alkylating aromatic hydrocarbons GULF RESEARCH & DEVELOPMENT CO 3 Aug 1972 [13 Aug 1971] 36324/72 Heading C5E Monoalkylaromatic hydrocarbon is prepared by reacting an olefin and an aromatic hydrocarbon to form the monoalkyl and a dialkyl aromatic compound, the aromatic hydrocarbon and the dialkyl compound reacting to form the monoalkyl compound in equilibrium limited reactions the aromatic hydrocarbon being present in the reaction zone in an amount in excess of that required for the reactions and during the reaction excess aromatic hydrocarbon being recycled to the reaction zone, the concentration of the dialkyl compound reaching a value in excess of that at equilibrium wherein the molar ratio of the aromatic hydrocarbon to the olefin in the initial reaction mixture is between 1 : 1 and 10 : 1, an amount of the dialkyl compound in excess of that present at equilibrium is introduced to the reaction zone and the reaction is terminated before equilibrium is reached. In the example cumene is prepared by alkylating benzene with propylene using a zeolite catalyst.
Patent GB-1434106-A (GB)
Title: Arc welding apparatus for and method of underwater welding
IPC: B23K9/16
Filed: 1973-07-31
Abstract: 1434106 Welding by fusion MITSUBISHI JUKOGYO KK 31 July 1973 [4 Sept 1972] 36477/73 Heading B3R In underwater consumable electrode arc welding, a high speed stream of water fed from a pump via ports 5, 51 and a header 4, is divergingly ejected from an annular nozzle 3 surrounding the electrode on to a workpiece M to form a flared curtain of water, and shielding gas is ejected into the curtain/workpiece enenclosed space B to provide a gaseous atmosphere for the welding. The nozzle 3 may be provided with spirally disposed guide vanes (Fig. 3, not shown) to apply a stabilizing centrifugal force to the jet, may be approximately elliptical (Fig. 4, not shown) to accommodate relative electrode/workpiece movement in the seam direction, and may be extended downwardly at one position only (Figs. 5a, 5b, not shown) to dip into a V- or U-shaped weld preparation groove.
Patent GB-1382888-A (GB)
Title: Tubular cartraidge a launching tube loaded with a cartridge and a method of launching a missile using the loaded launching tube
IPC: F41A1/10
Filed: 1972-08-07
Abstract: 1382888 Launching tube; cartridges MESSERSCHMITT - BOLKOW - BLOHM GmbH 7 Aug 1972 [14 Aug 1971] 36807/72 Headings F3C and F3A A device for launching missiles without recoil or detonator report comprises a tube 1 which is open at both ends and is provided with stops 4, 5, the stop 4 being integral with the mouth 2 of the tube and the stop 5 being formed on a sealing cap 6 having a screw-thread 7. The tube 1 houses a cartridge casing 8 of resilient material, the casing 8 tapering and being positioned in the tube 1 so that the taper increases from the rear end 3 of the tube 1 to the mouth 2. The cartridge casing 8 is hermetically sealed by diaphragms 10 and 11 and contains a first braking ring 12, a missile 13, a first cartridge case base 14, a propulsive charge 15, a second cartridge case base 16, a decomposable inert mass 17 and a second braking ring 18. When the charge 15 is detonated, the missile 13 moves in one direction and the inert mass 17 moves in the other direction to prevent recoil. The cartridge cases bases 14, 16 are stopped by the respective braking ring 12 or 18 abutting the respective stop 4 or 5 and a detonator report is thereby prevented.
Patent GB-1083742-A (GB)
Title: Machine tool
IPC: B23Q1/28
Filed: 1964-09-09
Abstract: 1,083,742. Machine tool details. H. MULLER. Sept. 9, 1964 [Sept. 9, 1963], No. 36881/64. Headings B3B, B3C and B3T. A boring machine, or lathe, comprises a rigid, rectangular frame 1, Fig. 1, work carriers 2, 3 slidable on columns 7, 8, of the frame, and a tool slide 4, slidable on a reaction member 6 of the frame, in the directions X, Y. Base 5 may be hollow and can be cooled by water controlled by a thermostat. Members 5, 6 may be formed as rails, or as a trellis. Slide 4 is slidable in the direction Y on bars 11, carried by a carriage 1, and the latter is slidable in the direction X along bars 10 carried by member 6, lead screws 12, 14 driven by motors 13, 15 providing the movement. In a modification, the movement is produced manually, or by hydraulic or pneumatic means. Slide 4, and carriage 9, are locked in their adjusted positions by magnets. A tool magazine 20 is provided, and the spindle 23 picks up the required tool by vertical movement of the spindle or the magazine. Work carriers 2, 3 are moved vertically by a wormshaft 24 driven by a motor 25, the shaft cooperating with work-wheels 26, 26<SP>1</SP> on lead screws 27, 27<SP>1</SP>. In a modification, the drive is by two synchronized motors. The face plate 28, mounted in carrier 2 is indexed, or rotated by hand, or by a worm drive 30a, 30b, driven by a motor 29. Carrier 3 may be the same as carrier 2, and both can be rotated when the machine tool is used as a lathe. In a modification, Fig. 1, face-plate 31 supports rods 32b, and a plate 32c, on to which the workpiece 32d is clamped. In a further modification, Fig. 2 (not shown), a work-table (43) is supported between the carriers (2), (3). The spindle 23 may be driven by an electric or hydraulic motor.
Patent GB-1355738-A (GB)
Title: Apparatus for counting and separating the flow of flat stiff articles into counted bundles of articles
IPC: B65H83/00
Filed: 1972-08-08
Abstract: 1355738 Feeding and delivering sheets WARD MACHINERY CO 8 Aug 1972 [5 May 1972] 36961/72 Heading B8R Sheets 22, Fig. 2, are delivered on to the top of a stack in a hopper 23 and aligned against a gate plate 42 by an oscillating plate 44a between side guides 44b. The height of the stack is detected by a roller 50, which controls the speed of a separating suction belt 14 so as to maintain the stack at constant height while sheets are removed from the bottom thereof and fed by a belt 16 past an elecric eye sensor 28 of a counter into a hopper 45 to form therein a stack fed from the bottom, aligned against a plate 24. When a predetermined number of sheets has been counted, a step bar 26a is raised to position 26b, Fig. 2c, so that a new stack begins to be formed laterally staggered from the first, thereby raising rear bar 34a to influence a further sensor 54, whereupon the stop bar is raised to position 26c, Fig. 2d, to separate the upper stack, which is moved forwards by the bar 34a on to a removal belt 18. The stop bar is lowered and the bar 34a retracted, so that the new stack is moved against the plate 24, and the cycle is repeated. The belt 14 may be replaced by a friction belt 100, Fig. 4a, arranged to contact only the front part of the stack, the rear part of which rests on a small angular plate 108. The members 24, 26a, 34a are adjustable by a movable carriage according to the length of the sheets. Instead of the bar 26a rising to position 26b, the portion of the belt 16 under the front part of the stack may be lowered.
Patent GB-1371727-A (GB)
Title: Acetaldehyde ethyl linalyl acetal and perfume compositions incorporating it
IPC: C07C43/303
Filed: 1972-08-09
Abstract: 1371727 Acetaldehyde ethyl linalyl acetal NAARDEN INTERNATIONAL NV 9 Aug 1972 [11 Aug 1971] 37180/72 Heading C2C [Also in Division A5] The invention comprises acetaldehyde ethyl linalyl acetal and its preparation by reacting ethyl vinyl ether with linalool. The compound is used as a component of perfume compositions.
Patent GB-817283-A (GB)
Title: Improvements relating to electron discharge devices
IPC: H01J23/027
Filed: 1955-12-29
Abstract: 817,283. Velocity modulated tubes. GENERAL ELECTRIC CO. Dec. 29, 1955 [Jan. 20, 1955], No. 37269/55. Class 39(1). An electron discharge interaction device comprises a suppressor electrode and an electron collector and means for applying a potential difference between the collector and the suppressor electrode so as to produce an electric field for decelerating electrons passing to the collector, the collector being of tubular form and having a tapered end. As applied to a travelling wave tube having a helical wave structure 18, Fig. 1, the suppressor electrode 16 is maintained at a potential of about 1000 volts above that of the collector 17 and is located at least in part within a bucking coil 30 which shields the electrode 16 and the collector 17 from the field H of the focusing coil 29 and which has also a radial field component 31. The field H<SP>1</SP> of the bucking coil and the lower potential of electrode 16 relative to the structure 18 causes the beam to spiral and spread as at 32 on entering the collector 17 so that the majority of the secondary electrons emitted travel inwards into the collector. Any secondary or reversed primary electrons re-entering the electrode 16 are deflected thereon by the ringing electric field and the magnetic field 31. If is is desired to collect all electrons in the collector 17 the field of coil 29 is arranged to include the electrode 16 and the coil 30 is located around the cylindrical portion of the collector 17. In lieu of the bucking coil 30 or in addition thereto, the deflection of the electrons may be affected by a cross magnetic field. The collector 17 may be provided with a central metal post extending into the electrode 16 to provide therein an electric field which also deflects electrons from the main beam. A secondary electron collector at a potential between that of the electrode 16 and that of the collector 17 may be located intermediately of the suppressor and the collector. In the embodiment shown in Fig. 3 the electron beam between a suppressor electrode 16 and a collector 41 is deviated by means of a cross magnetic field 45 and a further electrode 47 at the same potential as that of the suppressor 16 is located as shown to provide a decelerating gap 46 at the entrance to the collector. Reversed primaries or escaping secondaries are deviated by the field 45 on to a collector 43 whose potential is higher than that of the electrode 16.
Patent GB-623428-A (GB)
Title: Manufacture of new substituted ethylenes
IPC: C07D277/22
Filed: 1946-12-18
Abstract: Substituted ethylenes are manufactured by treating an ethane compound containing the atomic grouping <FORM:0623428/IV (b)/1> (wherein the symbols x represent -NH-, oxygen or sulphur, at least one being oxygen or sulphur), or a substitution product or salt (e.g. hydrochloride or sulphate) thereof, with a dehydrogenating agent at a raised temperature (e.g. 80-150 DEG  C.). Suitable dehydrogenating agents and reaction media are those enumerated in the parent Specification, except that ferric salts (of which ferric chloride is the only example given) are specified for the dehydrogenation of thiazoles only.  The preferred agent is mercuric acetate in glacial acetic acid, which generally produces a mercury complex compound of the dehydrogenation product, from which the mercury may be eliminated by treatment with acid or alkali (the latter being used in the case of products, such as oxazoles, which are sensitive to acids).  The products may be used for marking fibrous materials, especially cellulosic fibres, in order that they may be identified by fluorescence.  Examples describe the dehydrogenation of a  : b -di-(4-methylthiazolyl-2)-ethane, a  : b -di-(benzthiazolyl-2)-ethane, a  : b -di-(4 : 5-diphenylthiazolyl - 2) - ethane, a  : b  - di - (benzaoazolyl-2)-ethane, a -(benzimidazyl-2)-b -(benzoxazolyl-2)-ethane and a -(benzthiazolyl-2)-b -(benzimidazyl-2)-ethane.  Additional starting materials specified are: a  : b -di-(thiazolyl-2)-ethane, a  : b  - di - 4 - ethylthiazolyl - 2) - ethane, a  : b  - di - (oxazolyl - 2) - ethane, and a  : b  - di - (benzthiazolyl - 2 or benzoxazolyl - 2) - ethanes containing a halogen, nitro or methoxy substituent in the benzene nucleus.  a  : b -Di-(benzoxazolyl-2)-ethanes are obtainable by heating an o-aminophenol with succinic acid or a functional derivative thereof at 170-180 DEG  C. with exclusion of air.  a  : b -Di-(benzthiazolyl-2)-ethane is obtainable by heating o-aminothiophenol with succinic acid at 170-175 DEG  C. with exclusion of air.  a  : b -Di-(4 : 5-diphenylthiazolyl-2)-ethane is obtainable from the thioamide of succinic acid and a -chlorobenzoin in absolute alcohol.  a -(Benzimidazyl- 2)-b -(benzoxazolyl- 2)-ethane and a  - benzthiazolyl - 2) - b  - (benzimidazyl - 2) - ethane are obtainable by heating b -(benzimidazyl-2)-propionic acid to 170-180 DEG  C. with o-aminophenol and o-aminothiophenol respectively.
Patent GB-524016-A (GB)
Title: Improvements in or relating to furnaces and the like
IPC: F27D11/02
Filed: 1938-12-22
Abstract: 524,016. Heat-treatment furnaces. ORAM, J. E., and WILD - BARFIELD ELECTRIC FURNACES, Ltd. Dec. 22, 1938, No. 37308. [Class 51 (ii)] In a heat-treatment furnace, of the type in which the furnace atmosphere is circulated in a closed circuit within the furnace by a fan, one or more charging o r discharging passages in the furnace wall extend into the treatment chamber transversely to the line of travel of work conveying means therein. In the vertical furnace shown air is circulated by a fan 11 round a partition 3 in the furnace chamber and perforated work supporting trays 25 are conveyed into and from the furnace through openings 21, 22 leading on to and from respectively angle irons 20 carried on opposite pairs of elevator chains 17. Electric resistances 6 heat the air, which may be circulated in either direction. Automatic means may be provided to stop trays opposite the unloading opening and means e.g., pushers, to load and unload them.
Patent GB-1311954-A (GB)
Title: Growth of fluoride crystals
IPC: C09K11/77
Filed: 1970-08-04
Abstract: 1311954 Luminescent materials WESTERN ELECTRIC CO Inc 4 Aug 1970 [7 Aug 1969] 37463/70 Heading C4S [Also in Division C1] Fluoride compounds which contain ytterbium together with yttrium or any of the other rare earths of the lanthamide or actonide series, and which are used in up-converting phosphor layers, are crystallized by growth from a flux which contains at least 1% by weight of a fluoride of at least one of the elements Be, Mg, Al, B, Si and P. The fluxes, such as BeF 2 , MgF 2 , or AlF 3  for instance have a high oxygen affinity, and reduce oxygen contamination of the phosphor. The flux may also contain one or more of the compounds PbF 2 , BiF 3 , LiF, NaF, KF, RbF, CsF, TlF and ScF 3  and initially at least 1% by weight of NH 4 F. The fluoride compounds may also contain a halogen other than fluorine (Cl, Br, I specified) in an amount of up to 80 atom percent of total halogen present. Preferred phosphor compositions contain ytterbium together with the ions of at least one of the elements erbium, thulium and holium and may also include ions of yttrium, barium, strontium, gadolinium, lutetium, lanthanum, sodium or lithium. Materials of primary interest as phosphors have the formulµ: R.E.F 3 ; M<SP>1</SP>R.E.F 4 ; M<SP>1</SP>R.E. 3 F 10 ; M<SP>11</SP> x R.E. 1-x-  F 3-x  and M<SP>111</SP> x R.E. 1-x F 3  in which M<SP>1</SP> is Li or Na, M<SP>11</SP> is Ca, St or Ba, M<SP>111</SP> is scandium, aluminium, gallium or indium, R.E. is ytterbium together with any other rare earth element and x is from 0 to 0À95. The examples describe the crystallization of compounds of the formulµ Y 0À8 Yb 0À19 Er 0À01 F 3 ; and Y 0À65 Yb 0À25 Tm 0À001 F 3  detailed preparations being given. The compounds of the invention may be used in an infra-red emitting diode (Fig. 1) comprising a gallium arsenide diode 1 containing a p-n junction 2 defined by p and n regions 3 and 4 respectively, the diode being forward biased by planar anode 5 and ring cathode 6. Infra-red radiation produced by junction 2 and represented by arrows 7 passes into and through layer 8 of phosphor material where it is converted to radiation at a visible wavelength; and in an infra-red diode pumped laser (Fig. 2) comprising a single crystal rod 21 provided with protecting layers 22 and 23, and a light source made up of infra-red-emitting diodes 25 of the type shown in Fig. 1. Tb, Eu, Sm, Dy, and Fe impair fluorescence, as does Tm with Ho or Er as activators. Other impurities up to 1% by wt. may be tolerated.
Patent GB-523211-A (GB)
Title: Improvements relating to the dressing of coals, shales and like carbonaceous substances
IPC: B03B5/44
Filed: 1938-12-28
Abstract: 523,211. Washing coal &c. OSAWA, H. Dec. 28, 1938, No. 37671. [Class 82 (ii)] , Coal, shale, and like carbonaceous substances are dressed in a medium consisting of an aqueous suspension of a mixture of clay and finely ground cinder of roasted iron pyrites or roasted siderite ore, the suspension having a low viscosity and a specific gravity of 1À35 - 1À7.
Patent GB-1209951-A (GB)
Title: Improvements relating to electrochemical heat treatment
Inventor: BULLOUGH WILLIAM
IPC: C21D1/40
Filed: 1967-01-13
Abstract: 1,209,951. Heating by electric discharges. BRITISH IRON & STEEL RESEARCH ASSOCIATION. 12 Jan., 1968 [13 Jan., 1967; 16 Aug., 1967], Nos. 2036/67 and 37705/67. Heading H5H. [Also in Division C7] A metal wire 17 is made the cathode in an electrolyte 12 and is heated, e.g. for annealing purposes by discharge between it and an anode 15, 111, the wire 17 being drawn through the electrolyte 12. The wire 17 may be moved past a nozzle anode 15 through which electrolyte is circulated to impinge on the wire. The wire is moved either vertically as shown, see also Figs. 3A, 3B (not shown), past assorted arrangements of one or more nozzles 15, 30, 35, or is moved horizontally past nozzles 15, Figs. 2A, 2B (not shown). The enclosed space above the electrolyte bath 110 contains a protective atmosphere such as nitrogen or hydrogen, the anode in this embodiment being a plate 111 of stainless steel.