baber/WOPTO huggingface dataset:
Patent GB-1125509-A (GB)
Title: Improvements relating to the regulation of closed-circuit internal combustion engines
IPC: B63G8/12
Filed: 1966-08-05
Abstract: 1,125,509. Closed circuit engines; regulating. DAIMLER-BENZ A. G. Aug. 5, 1966 [Aug. 7, 1965], No. 35144/66. Heading F1B. In a closed-circuit engine 14 mounted within a closed chamber 10, e.g. a torpedo casing, the supply of oxygen and fuel mixed with the recirculated gases is controlled as a function of the position of the intake pipe throttle valve 18, the supply also being connected in response to the pressure upstream of the throttle valve and to the pressure difference across said valve. The exhaust gases are cooled in a cooler 28 before entering the casing 10, excess waste gases being pumped outside by a compressor 16 and condensed water being removed by a bilge pump 33. The oxygen control valve 22 is controlled by the oxygen pressure and temperature, the pressure upstream of the throttle valve, and the pressure drop across the throttle valve. The fuel injection pump 23 is controlled by a speed governor 26 and in accordance with the oxygen valve position and the pressure and temperature upstream of the oxygen valve. A throttle valve 30 in the compressor intake is controlled by the position of the throttle valve 18. A pressure sensitive device adjusts the valves 18, 30, if a predetermined maximum pressure in the circuit is exceeded.
Patent GB-1472073-A (GB)
Title: Bridge switching amplifiers
IPC: G05B1/02
Filed: 1974-08-09
Abstract: 1472073 Control of DC motors GENERAL ELECTRIC CO 9 Aug 1974 [20 Aug 1973] 35226/74 Heading H2J In a bridge control system for a D.C. motor 10 wherein the direction of rotation is determined by closure of pairs of switches AD or BC and the control of these switches, to produce a desired direction and a desired pulse width modulation of a battery voltage 11, is provided by a unit 50 receiving a command signal and a signal representative of the motor current, the latter signal is obtained from a current measuring circuit comprising members 21, 23 ... 37 and 40 ... 46 of which member 40 constitutes a difference amplifier whose inputs respectively receive voltages that are functions of the voltages at the ends of the resistor 21, the arrangement being such that the measuring circuit is independent of the direction of current through the motor. Members 33 ... 36 are connected to a negative D.C. source 31 and establish a constant current through resistor 32 and hence a constant voltage at the bases of transistors 26, 29, this voltage being selected so that transistors 26, 29 are conductive over the full range of motor current. The emitter voltages of transistors 26, 29 are equal and their collector voltages are referenced to the source 31, that of transistor 26 being proportional to the difference between the voltage at end 20 of resistor 21 and the emitter voltage of transistor 26 and that of transistor 29 being proportional to the difference between the voltage at end 22 of resistor 21 and the emitter voltage of transistor 29. Hence the application of the collector voltages to difference amplifier 40 causes it to produce an output proportional to the motor current, members 47, 48 adjusting the output to zero for zero motor current. Other advantages of the measuring circuit are the reduced value of resistor 21 required for the measurement of the full range of motor current and the automatic cancellation in the difference amplifier 40 of signal variations caused by noise appearing at end 20 of resistor 21, change in ambient temperature or change in voltage of source 31. The bridge ABCD may be the transistor bridge described in Specification 1.152.144.
Patent GB-343550-A (GB)
Title: Improvements in apparatus for controlling the flow of fluids
IPC: F24H9/20
Filed: 1929-11-18
Abstract: 343,550. Multiple-way valves ; accessories. FRY, J. D. and EDWARDS, H. V., W.O., Experimental Station, Porton, Wiltshire. Nov. 18, 1929, No. 35235. [Class 135.] Interconnecting two or more valve members.-Apparatus for controlling two or more fluid supplies, as for example the water and gas in domestic geysers, comprises two or more valves or cocks adapted to be opened in correct sequence, and at least one to be locked subsequently in that position, by a control member which may thereafter be moved further in the opening direction by several complete revolutions, if desired, or to any less extent, the closure of the valves or cocks being effected by similar movements in reverse order. The water valve m, Fig. 2, is interconnected to the gas valve s, for the above purpose, by a cylindrical rotary member o, Figs. 1 and 2, having one or more teeth p thereon adapted to mesh with one or more teeth q on a pinion r on the gas valve. On first turning the handle w to open the water valve the cylindrical part of the rotary member o engages the untoothed part of the gas valve pinion r and holds the same locked in its closed position until the water valve is sufficiently open and the teeth engage, whereupon the water and gas valves move together in the opening direction. The lift of the screw n carries the teeth finally out of engagement so that the water valve may be opened further whilst leaving the gas valve looked. The screw v provides for a lead or lag of one member in relation to the other. Specification 3430/15, [Class 135, Valves &c.], is referred to.
Patent GB-935765-A (GB)
Title: Fuzes for projectiles
IPC: F42C15/34
Filed: 1960-10-14
Abstract: 935,765. Projectile fuzes. GEB. JUNGHAUS A.G. Oct. 14, 1960 [Oct. 16, 1959], No. 35313/60. Class 9 (1). A time fuze for rotatable and non-rotatable projectiles has a safety device comprising a worm 107 rotatably mounted on a striker pin 15b, an inertia weight 109 into which is set a pin 108 (not shown), and a safety finger 114 rigidly mounted at its lower end in the weight 109. At the lower end of the worm 107 is a collar 107b which is partially cut-away as at 107d (see Fig. 5) and in the unarmed state of the projectile a pin 116 attached to a plate 117 is pushed against the collar 107b by means of a spring 118. During acceleration of the projectile the inertia weight 109 is caused to move rectilinearly rearwards being guided by posts 105 and 106 (not shown) and the pin 108 projecting into the groove 107a of the worm causes the latter to rotate. On arrival of the weight at cover-plate 102 the worm has rotated sufficiently to allow the pin 116 to move in the space left by the cut-away portion 107d, the plate 117 consequently moving anti-clockwise thereby freeing the passage between the striker pin 15b and a primer 20. The finger 114 on moving rearwardly, releases the balance member of the clockwork time fuze (see Specification 935,764) and the reduced portion 114a is clamped by a spring 115 when the weight reaches plate 102, thereby preventing return of the weight under the action of spring 119. The projectile is rendered safe during transportation since when dropped on its nose the striker pin, if driven back, meets the plate 117 and when dropped on its base movement of the striker pin is damped by spring 119<SP>1</SP> and the impulse is insufficient to cause a large movement of the inertia weight against the action of spring 119 and a delay mechanism formed by parts 110 to 113.
Patent GB-786692-A (GB)
Title: Improvements in roller presses for separating liquid from liquid-containing solid material
IPC: B30B9/20
Filed: 1955-12-09
Abstract: 786,692. Presses for separating liquids from solids ; filters. STAMICARBON N.V. Dec. 9, 1955 [Dec. 9, 1954], No. 35447/55. Class 46. Slurry is fed at 11 to the nip between a driven non-screening roller 1, Fig. 2, and an idler screening roller 6, having a screen 12, Fig. 7, disposed over drainage channels 13. The shaft 7 of the roller 6 is arranged in a bracket 8 pivoted at 9 and having two lever arms 8a depressed by springs 10 to urge the rollers together. The driven roller 1 has end flanges 31 to ensure retention on its surface of the solid residue which is subsequently removed by a scraper 32. In Fig. 3, the screen 12 consists of parallel tapersection bars 16 curved in planes normal to the roller axis and supported on the portions 14 of the cylindrical surface between the longitudinal drainage channels 13, from which liquid escapes by bores 15. The periphery of the roller is covered by sets of the bars 16 extending between connecting pieces secured at intervals around the roller surface, and is divided axially into two parts, by blocks 23 in the drainage channels 13. The bars 16 are held in place by retaining bars 17, one above each portion 14. In Fig. 6 the bars 16 are parallel with the roller axis, and are held onto supporting bars 24 (grooved into portions 14), by retaining bars 17. The portions 14 are chamfered so as to avoid blinding of the screen at these places. To prevent liquid draining back again through the screen into the solid residue the channels 13 may be inclined forwardly at the bottom, Fig. 7. Vacuum may be applied to the channels in the pressure zone. The driven roller 1 may have a grooved surface. One roller may be mounted within, and cooperate with the inner surface of, the other.
Patent GB-998964-A (GB)
Title: Refrigerator door gasket
IPC: F25D23/08
Filed: 1962-09-18
Abstract: 998,964. Refrigerator door gaskets; magnetic fastenings. H. O. CANFIELD CO. Sept. 18, 1962 [Oct. 12, 1961], No. 35564/62. Headings E1J and E2A. A flexible, rectangular-sectioned strip magnet 20a or 20c is sheathed in flexible polyvinyl chloride tubing 33a or 33c supported by two tapering arms 31a or 31d, 32a or 32c from a thicker base 22a or 22c. A ribbed sealing portion 25a may be connected to the base 22a at one end (Fig. 4) or a downstand flange 42 may be formed opposite the magnet (Fig. 6), which flange has ribbed sides, and an oval longitudinal hole 46. A ridge 39a (Fig. 4) may be formed along one or both top edges of the tubing 33a, and the magnet may be recessed adjacent the connections with the arm 31 and 32, with the rubber sheathing thickened into the recesses (Fig. 5, not shown) &c.The sealing portion 25a may be replaced by an L-shaped base (Fig. 3, not shown), with the upstanding flange secured to the refrigerator door by means of a downwardly hooked flange formed on a fixing strip.
Patent GB-371905-A (GB)
Title: Improvements in and relating to bricks and building blocks
IPC: C04B35/01
Filed: 1930-11-26
Abstract: Refractory bricks are cast from a molten mixture consisting, as to not less than 80 per cent by weight, of the oxides of aluminium, chromium, iron, and magnesium in proportions conforming to the spinel formula M11O.M2111O3, and not including more than 15 per cent by weight of silica.  The oxides of aluminium, chromium, iron, and magnesium are proportioned so as to secure monomolecular balancing of the iron oxide by aluminium oxide or by aluminium oxide and chromium oxide, and monomolecular balancing of the magnesium oxide by chromic oxide, or by chromic oxide and aluminium oxide, the chromium oxide and magnesium oxide being present in molecular proportions or in excess thereof.  A preferred composition of the material is z[x FeO.Al2O3 + (2 - x) FeO.Cr2O3] + 4 [y MgO.Al2O3 + 2 - y MgOCr2O3] where z < 1, y < 2, and x < 2, residual constituents amounting at most to about 20 per cent by weight and consisting chiefly of silicic acid, the chromic oxide content being preferably increased if the silicic acid content is relatively high.  The proportion of chromic oxide compounds to alumina compounds must not be less than 1 : 8,5 the value of z being preferably not higher than 0,33, with the silica-content not exceeding 15 per cent of which 8 per cent may be balanced in monomolecular proportion by aluminium or magnesium oxide.
Patent GB-831425-A (GB)
Title: Improvements in or relating to cameras and to viewing attachments therefor
Inventor: KINGSBURY JOHN
IPC: H04N5/225
Filed: 1956-11-21
Abstract: 831,425. View-finding attachments. PYE Ltd. Nov. 18, 1957 [Nov. 21, 1956], No. 35657/56. Classes 97(1) and 98(1) A viewing attachment for a viewfinder on a camera, particularly a television. camera, comprises a vizor through which. the image on the camera viewfinder may be viewed, mounting means for said vizor whereby relative angular displacement between the vizor and the plane of the viewfinder image may be effected, and optical means interposed in the light path between the eye piece of the vizor and the viewfinder image by means of which the image seen through the vizor always appears substantially normal to the line of sight despite relative inclination between the vizor and the plane of the image. As shown, a casing 1 with an aperture 2 for engaging electronic viewfinder tube 3 has a further aperture 4 through which extends a vizor 5 (constructed of two parts joined by a strip 5b) which is mounted to swing through the aperture 4 from the position X to position Y. The optical system comprises a fixed mirror 7 at 45 degrees to the face of the picture tube 3 and a mirror 8 mounted on an angle bracket 9 which is connected via gears 10, 14 and a quadrant 16 to the vizor 5, so that rotation of the latter is accompanied by rotation of the mirror 8 through half the angle. Mirror 8 is mounted on gear 10 by a screw 13 passing through a slot 12 in the bracket 9, so that by loosening screw 13 the mirror may be adjusted independently of vizor 5. The aperture 4 is sealed by roller blinds 20 sliding in channels 21 and each attached by leather hinges 25 to shutters 22a, 22b which slide in grooves 23 to cover the apertures 5d on either side of the vizor 5. The magnifying lens 26 may be inserted in the light path, prisms may be used instead of mirrors and levers instead of gear wheels.
Patent GB-860064-A (GB)
Title: Improvements in or relating to fenders
IPC: H01H71/10
Filed: 1959-10-21
Abstract: 860,064. Fenders. MERELO, L. B. Oct. 21, 1959 [Oct. 21, 1958], No. 35671/59. Class 113. A fender comprises a cylinder formed by a plurality of rods 1 covered by an enveloping covering of ropes 2, said cylinders being carried in a hollow cylinder formed by a series of vehicle tyres 3.
Patent GB-956614-A (GB)
Title: Improvements in or relating to the extraction of metals
Inventor: MEYER HERBERT
IPC: C22B34/24
Filed: 1961-10-04
Abstract: Ta, Nb and Si values are removed from tin slag containing these and other impurities by comminuting the slag and treating it with HCl, preferably hot HCl, the insoluble residue containing Ta, Nb and Si values is separated and treated with HF or a solution of an acid fluoride, e.g. a solution of an alkali metal hydrogen fluoride or ammonium hydrogen fluoride, to dissolve the silica and to leave an insoluble product containing Nb2O5 and Ta2O5.
Patent GB-1049145-A (GB)
Title: Selective hydrogenation catalyst and procedure
IPC: C07C5/08
Filed: 1963-09-11
Abstract: Acetylenic hydrocarbons in admixture with conjugated diolefines, particularly C4 acetylenes in admixture to the extent of up to 2000 p.p.m. with 1,3-butadiene, are selectively hydrogenated by passage over a copper-oxide-chromium oxide catalyst containing 20-70% copper oxide and 80-30% chromium oxide, the amount of hydrogen being at least equivalent to the acetylenic hydrocarbons, and preferably being 2-10 moles, and the pressure and temperature being 15-50 p.s.i.g. and 100-250 DEG  F., respectively. A suitable catalyst is that containing 50-55% copper oxide and 40-45% chromium oxide, prepared according to the disclosure of U.S.A.  Specification 2,088,425.  Other catalysts are produced by precipitation with ammonia or other water-soluble base from an aqueous copper and chromium-containing solution and calcination of the precipitate at 600-800 DEG  F.
Patent GB-879888-A (GB)
Title: Catalyst for the production of formaldehyde from methanol
IPC: B01J37/00
Filed: 1959-10-23
Abstract: Formaldehyde is prepared by contacting a gaseous air-methanol mixture at elevated temperature with an iron molybdate catalyst prepared by mixing aqueous solutions of a molybdate (e.g. ammonium molybdate) and an iron salt (e.g. ferric chloride) to precipitate iron molybdate which is filtered, washed, dried to a water content of 40% to 50% by weight, roll milled, shaped into granules, dried at up to 120 DEG C. and then heated to raise the temperature to 400 DEG C. to 450 DEG C. over a period of at least 4 hours, the final temperature being maintained for at least a further 4 hours.  The catalyst consists of 78 to 81 parts by weight of Mo03 and 18 to 19 parts by weight of Fe2 03, and is crystalline.  Examples are given in which an air-methanol mixture containing 6.5% by volume methanol is passed through tubes packed with the granules, the mixture entering at 270 DEG C. and leaving at 330 DEG C., to obtain formaldehyde.ALSO:An iron molybdate catalyst is prepared by mixing aqueous solutions of a molybdate (e.g. ammonium molybdate) and an iron salt (e.g. ferric chloride) to precipitate iron molybdate which is filtered, washed, dried to a water content of 40% to 50% by weight, roll milled, shaped into granules, dried at up to 120 DEG C. and then heated to raise the temperature to 400 DEG C. to 450 DEG C. over a period of at least 4 hours, the final temperature being maintained for at least a further 4 hours.  The catalyst consists of 78 to 81 parts by weight of MoO3 and 18 to 19 parts by weight of Fe2 O3, and is crystalline.  Examples are given.
Patent GB-734668-A (GB)
Title: Improvements in or relating to polymerization
IPC: C08F236/04
Filed: 1953-12-29
Abstract: Copolymers comprising vinylidene cyanide, an aliphatic conjugated diene and optionally another monomer are made by polymerizing, e.g. in bulk or solution, a mixture of the monomers in the presence of an organic thiol and a strong inorganic acid. The strong acid may be concentrated sulphuric acid or oleum, hydrogen halides such as hydrochloric acid, concentrated nitric acid, concentrated phosphoric acid, trichloracetic acid, or chlorosulphonic acid.  The diene may be butadiene-1,3, isoprene, piperylene, 2,3-dimethyl butadiene-1,3, 1,2-dimethyl butadiene-1,3, 1-ethyl butadiene-1,3, 2-neopentyl butadiene-1,3, phenyl butadiene, 2-methyl pentadiene-1,3, 2-chloro-butadiene-1,3, 2-bromo-butadiene-1,3, or mixtures.  The other monomer may be a vinyl or allyl ester, an acrylic or methacrylic acid ester, a vinyl halide, a 1,2-dihaloethylene, styrene or a substituted styrene, acrylonitrile or isobutylene.  Solvents mentioned are benzene, toluene, trichlorobenzene, hexane, heptane, ethyl chloride and chloroform.  Specified thiols are thiophenol, thionaphthol, 8-quinolinethiol, 3-methyl cyclohexanethiol, o-, m- and p-toluenethiols, xylenethiols, alpha-toluenethiol, methanethiol, ethanethiol, 1-propanethiol, 1-hexanethiol, dodecanethiol, 2-mercapto-ethanol, and gamma-mercapto-alpha, beta-dimethyl butyric acid and mixtures.  The polymers may be made into filaments and films.  Specifications 683,655 and 688,339 are referred to.
Patent GB-1428660-A (GB)
Title: Drafting heads
IPC: D01H5/50
Filed: 1972-06-23
Abstract: 1428660 Loading pressing rollers in roller drafting heads JAMES MACKIE & SONS Ltd 30 July 1973 [23 June 1972] 36066/73 Divided out of 1428659 Heading DID A textile drafting head includes means e.g. pivoted arm 8, for applying pressure to the pressing rollers 4A, 4B cooperating with the drafting roller and with the retaining roller 3A, 3B respectively, and is characterised in that the loading pressure is applied to either or each roller by means of a removable spacer member 136 fitted to a hollow plunger 34 acting on and at least partially enclosing a loading spring 30 to apply pressure to the roller. The spring 30 is mounted within one end of a lever 22 pivoted at 23 to a bearing block 24, 25, which lever applies pressure to the spindle 20 carrying the pressing roller. The spacer member 136 is preferably in the form of a cap fitting over the plunger or having a spigot extending into the top of the plunger. The cap 136 preferably also has a projecting flange 139 which may contact the side walls 8A, 8B of the arm 8 or be clear thereof to provide a visual indication of the loading applied. The cap is preferably moulded from coloured plastics material, e.g. nylon, different colours indicating different distances between the top of the plunger and the pressure application point e.g. dome 138.
Patent GB-867425-A (GB)
Title: Thermionic tube with variable slope
IPC: H01J21/12
Filed: 1957-11-20
Abstract: 867,425. Cathode ray tubes. TESLA, NARODNI PODNIK. Nov. 20, 1957 [Nov. 24, 1956], No. 36144/57. Class 39(1). An electron beam is deflected by electrodes 4, 5, Fig. 1 over anodes 6, 7 which are back coupled to one or more electrodes 9, 10 which serve to increase the deflection, the value of the anode resistors 11, 12, beam current or the feedback coupling 6, 7; 9, 10 being such that the slope of the anode current deflecting voltage curve may be selected between the limiting values of zero and infinity while maintaining linearity in the middle portion of the curve. The device may be used as an amplifier with variable amplification, in trigger circuits or as a multivibrator or frequency doubler. An input signal is applied across deflecting electrodes 4, 5. For a critical value of anode resistor resistance, R=R c , determined by the geometrical arrangement of the electrodes and by the working conditions and for maximum beam current the anode current-deflection voltage curve has infinite slope, Fig. 2 (not shown). It also has infinite slope for maximum beam current and R=R c , Fig. 3 (not shown). For R7 R c  and maximum beam current, the curve has two branches of infinite slope, Fig. 4 (not shown). In Fig. 5 (not shown) the feedback connections 6, 7; 9, 10 are tapped off from the anode resistors 11, 12 to give variable coupling 6, 7; 9, 10. There may be only one coupling electrode 9 or 10. There may be four coupling electrodes 9, 10, 19, 20 and three anodes 6, 15, 7, Fig. 6. In this case the anode resistors have tappings 13, 14 connected to potentiometer 16 with two sliding contacts connected to 19, 20. The effect of third anode 15 is to shift the characteristics of Figs. 2-4 (not shown) to the left or right hand side. Screen or suppressor electrodes may be mounted between the electrode pairs. The position of deflecting electrodes 4, 5 and coupling electrodes 9, 10 may be interchanged. The anode load resistances may be replaced by impedances.
Patent GB-812965-A (GB)
Title: Wire printer
IPC: B41J7/66
Filed: 1955-12-20
Abstract: 812,965. Selective printing. INTERNATIONAL BUSINESS MACHINES CORPORATION. Dec. 20, 1955 [Dec. 30, 1954], No. 36441/55. Class 100(4) A code rod setting device for a wire printer having a number of print-wires each with a print-end and control end comprises a code bar in the form of a hollow body 10, perforations 32 in the wall of which will permit the. passage of printwire control ends 14a, the perforations being so disposed as to define a number of positions for each of which a corresponding combination of perforations will be disposed opposite various of the printwire control ends. The bar 10 is movable by rotation, by gears 35, 40, and longitudinally by lever 44, in a carrier tube 12, between a home position to which the bar is biased by spring 34, and any of a plurality of other positions opposite the wire control ends. The construction permits the control ends of the print-wires to be closely spaced in the radial direction. The rod may have seven different equallyspaced sides, and the control points of the code rod may be spaced closer axially than is usual so that the rod may be shortened and the code rod be of low inertia. Specification 729,064 is referred to.