baber/WOPTO huggingface dataset:
Patent GB-831116-A (GB)
Title: Improvements relating to semi-conductor devices
Inventor: DAWSON EDGAR FREDERICK
IPC: H01L29/00
Filed: 1955-02-07
Abstract: 831,116. Semi-conductor devices. BRITISH THOMSON-HOUSTON CO. Ltd. March 6, 1956 [Feb. 7, 1955], No. 3583/55. Class 37. A double-base diode consists of a semiconductor body of one conductivity type provided with an ohmic electrode, a first electrode forming a PN junction with the body, and a trigger electrode forming a PN junction with the body between the ohmic and first electrodes. One such device is shown in Fig. 3. In operation a voltage is applied between the electrodes 3, 5 to reverse bias junction 6 and a variable similarly poled voltage applied between electrodes 1 and 5. If the body is of the N-type material the arrangement is such that if the potential of 1 is less than that of the adjacent part of the body the trigger junction is reverse biased and virtually no current flows in the device. When the potential at 1 is raised to the point at which the lower part of the junction is biased as an emitter minority carriers are injected into the N-type body and flow across the reverse biased junction as in a junction transistor. The injected carriers reduce the effective resistance of the lower part of the body to such an extent that the zero bias point moves along the trigger junction until the whole of it is emitting and the current through junction 6 is raised to a stable high value. The arrangement is more sensitive to small changes in trigger voltage than the known arrangement in which junction 6 is replaced by an ohmic connection since in the present case the potential gradient in the N-region is low in the untriggered condition. The device may alternatively be of the form shown in Fig. 4 with the ohmic and trigger electrodes 1, 3 on one face of the disc and the first PN junction forming electrode 5 around its periphery. Specifications 786,876 and 791,959 are referred to.
Patent GB-616703-A (GB)
Title: Improvements in automatic valves for liquid pressure-transmission systems
IPC: F16K17/30
Filed: 1946-02-05
Abstract: 616,703. Valves. STERLING INDUSTRIES, Ltd., and THOMAS, P. E. Feb. 5, 1946, No. 3593. [Class 135] A valve 4, having a restricted flow passage or notch 14 and closed by an excessive liquid flow from the inlet 3 to the outlet 7, e.g. due to a break in the outlet pipe, is provided with a byepass 8 normally closed by a screwed plug 12 which may be opened to refill the outlet pipe when the break is repaired. A circlip 21 pressing against a triangular guide 19 on the valve spindle forms a limit stop for the valve.
Patent GB-400973-A (GB)
Title: Improvements in electric signalling, supervising and recording systems
IPC: G08B25/04
Filed: 1932-02-06
Abstract: 400,973. Electromagnetic switches and interrupters. HARRINGTON, J. R., 4612, Maypole Avenue, Chicago, U.S.A. Feb. 6, 1932, No. 3597. [Class 38 (v).] In a sprinkler supervisory system the following types of relays are used : (1) a magnet 54 as shown in Figs. 5 and 6, having two armatures 55, 85; the armature 55 controlling pawl 56 which steps ratchet 58 and armature 85, which moves quicker than armature 55 and is attracted towards the side of the pole face, opening contacts 87, 88 ; (2) an oscillator shown in Fig. 9 comprising two serially connected coils 161 and an armature 163 carrying mercury tubes 169, 171 which control contacts in an external circuit and in the oscillator circuit respectively ; (3) a change-over relay, Figs. 10 and 11, comprising a solenoid 188 into which the armature 189 is drawn, closing contacts 1861, 187<1> and opening, through the pivoted beam 193, the contacts 186<11>, 187<11>. The oscillator armature, Fig. 9, may carry a single mercury tube with contact sets at either end which are closed in turn as indicated diagrammatically in Fig. 26.
Patent GB-901099-A (GB)
Title: Control device for hydraulic drives, more particularly motor vehicle steering systems
IPC: B62D5/087
Filed: 1959-02-02
Abstract: 901,099. Hydraulic apparatus. TEVES, H., TEVES, E. A., and TAUSEND, M., [trading as TEVES MASCHINENUND ARMATUKENFABRIK KOMM.-GES., ALFRED]. Feb. 2, 1959 [Feb. 4, 1958], No. 3651/59. Class 69 (2). [Also in Group XXXI] A control device for an hydraulic drive, such as a steering system, comprises a valve housing 3 having two freely movable valve members 11, 12 which are subjected to spring action and are acted upon by a common adjusting member 15, each valve member in one direction of movement throttling or closing a return flow line to a pump 1 and opening a line to a working cylinder 6, and in the other direction of movement throttling or closing the line to the cylinder and opening the return flow line to the pump, the two valves always being adjusted to produce opposite effects to control the flow to and from the opposite ends of the cylinder. The adjusting member consists of a fork 15 having studs 13, 14 which bear against the valve members 11, 12 and are of such a distance apart that in the central position of the fork, neither member bears against its seating or restricts the flow from the pump 1 and a chamber 9 to pipes 7, 8 leading to the cylinder 6 of the steering system. Upon movement of the fork, say, to the left, the valve member 12 throttles or closes an aperture 16 and permits the liquid to flow unrestricted through the pipe 8 to the device 6, and the valve member 12 throttles or closes the end of the chamber 9 and opens an aperture 17 to permit the liquid displaced from the righthand end of the cylinder to pass from the pipe 7 to a duct 18 and pipe 4 to a container 5. In the event of failure of the pump, the piston in the cylinder 6 can still be actuated mechanically, the valve members permitting flow of liquid through the device or to the container. The valve members may be in the form of balls, as shown, or in the form of spherical or cylindricalended rods on a guide. In another embodiment, the valve members are arranged in parallel bores and actuated by a rocking lever.
Patent GB-470337-A (GB)
Title: Improvements in or relating to apparatus for feeding cigarettes and other articles of similar shape
IPC: B65B19/10
Filed: 1936-02-06
Abstract: 470,337. Feeding cigarettes &c. CHALMERS, J. W., and MOLINS MACHINE CO., Ltd. Feb. 6, 1936, No. 3681. [Class 78 (i)] [Also in Group XVII] Relates to apparatus for feeding cigarettes and similarly shaped articles wherein the articles descend between guide members on to a supporting bed the lowermost article or articles being removed by a pusher member carried by an endless conveyer, and comprises. means which, whilst the pusher is in action, supports the articles above those being removed and then lowers them on to the bed in preparation for the next stroke of the pusher. As shown, cigarettes descend between partitions 7, on to a bed 8 and a pusher 9 carried by an endless chain 22 removes the lowermost layer, the pusher being slotted to clear the partitions. As the pusher advances, it passes over a suitably slotted plate 11. Fig. 3. which then rises, Fig. 5, to support the remaining cigarettes, being subsequently lowered for the next removal. The movements of the plate 11 are effected by cams 17, 23, rotating in synchronism with the conveyer, the rear end of the member 11 being pivoted to a rocking arm 14. The cam 17 rocks the arm 14 to move the member 11 in the direction of the pusher, the cam 23 acting through a slotted pivoted arm 25 to lift the member at the appropriate moment. Specifications, 10058/10 and 216,326, [both in Class 94 (i)], are referred to. Reference has been directed by the Comptroller to Specification 216,326.
Patent GB-101058-A (GB)
Title: Improvements in Blanks for the Manufacture of Sheet Iron Packing Cases.
Inventor: GUADAGNINI VIRGINIO
IPC: B21D51/02
Filed: 1916-03-15
Abstract: 101,058. Guadagnini, V. March 15, 1916. Boxes made from special blanks; lids and covers. - A metal packing-case for tin plates and other goods is formed from blanks shaped as shown in Figs. 1 and 2, the blank shown in Fig. 2 being folded to form the body with outwardly projecting flanges, a<2>, b<2>, c<2>, d<2> at its mouth. The parts a'. b<1>, c<1> of the lid blank are folded over on the lines 1, 2, 3 to form channels to engage three of the mouth flanges; the lid is then slid on to the body, and the part d' is folded over on to the remaining mouth flange to secure the lid. In a modification, the lid is formed from a blank shaped as shown in Fig. 6, so that, after it is in place, the engaging parts of the lid and body may be folded down, as shown in Fig. 8.
Patent GB-810111-A (GB)
Title: Device for locating position of magnetic tape or wire recordings
IPC: G11B27/30
Filed: 1954-02-10
Abstract: 810,111. Magnetic recording and reproducing apparatus. NEWMAN, J. E. May 10, 1955 [Feb. 10, 1954; May 10, 1955], Nos. 3939/54 and 13560/55. Class 40 (2). In a magnetic record apparatus having means for producing relative movement of the record medium at two different speeds, means responsive to signals reproduced at the higher of said two speeds initiates a control action and is adjustable to operate upon receipt of any selected number of said signals. The apparatus comprises a magnetic tape recorder having a tape on which subsonic signals are recorded between each sound passage, the frequency of the said signals being too low for the amplifier to detect at normal speed, but on fast winding the signals are raised in frequency and become audible and amplifiable. A given number of such signals, received at the grid of a valve Vp via a pair of contacts DP closed during fast winding, cause the application of brakes and the switching of the apparatus to " reproduce," in accordance with the setting of preselector contacts 1 to 7, inclusive.
Patent GB-1058614-A (GB)
Title: Process for treating liquid extracted from soda-roasted laterite
IPC: C01F7/08
Filed: 1964-01-30
Abstract: A process for treatment of the liquor obtained after soda-roasting of laterite or other iron ore containing Ni, Cr and Al includes a first stage wherein aluminium hydroxide is precipitated by adjusting to pH 4-10 by addition of ammonium hydrogen sulphate, a second stage wherein, after concentration of the filtrate from the first stage, sodium bicarbonate is precipitated by adding ammonia to pH 10-10.5 and treating with CO2 under pressure, and a third stage wherein the filtrate is concentrated to separate sodium sulphate and ammonium sulphate, then treated with ammonium hydrogen sulphate, sulphuric acid and sulphur dioxide to obtain ammonium chrome alum.  The sodium bicarbonate from stage 2 is roasted at 100-300 DEG C. yielding carbon dioxide which is recycled to the carbonation stage, and sodium carbonate which returns to the soda-roasting stage.  Ammonium hydrogen sulphate for stages 1 and 3 is obtained by at least partly decomposing, by roasting at 300-500 DEG C., ammonium sulphate, which may be that yielded in subsequent stages.  Ammonia for stage 2 is also a product of the roasting.  Subsequent electrolysis of the ammonium chrome alum to chromium yields sulphuric acid, which is recycled to stage 3, and ammonium sulphate.
Patent GB-575197-A (GB)
Title: Means for extracting dust and fine particles of textile fibre from carding engines
IPC: D01G15/82
Filed: 1944-03-03
Abstract: 575,197. Removing dust &c. from carding engines. PLATT BROS. & CO., Ltd., and CLEGG, J. K. March 3, 1944, No. 3994. [Class 120 (ii)] [Also in Group XXVIII] Dust and fine particles are extracted from the taker-in and cylinder compartments of a carding engine by one or more suction pipes e<1>, e<2>, e<3>, f<1>, f<2> extending into and having inlet apertures within the compartments. The pipes, which may be partitioned longitudinally or undercut at their inlet ends, are preferably secured to a single junction box a, located at the dividing sheet d between the compartments, which leads to a duct h below (or above) floorlevel.
Patent GB-233791-A (GB)
Title: Improvements in or relating to ignition magnetos for internal combustion engines
IPC: H02K21/38
Filed: 1924-02-15
Abstract: 233.791. British Lighting & Ignition Co., Ltd., Hutton, J. C., and Whitehouse, H. E. Feb. 15, 1924. Magneto-electric machines; inductor machines.-Ignition magnetos having rotating magnets, rotating inductors, or rotating armatures are provided on each of the pole-shoes of either the rotating or the stationary member with an extension tip C connected to the main portion by a bridge D of low magnetic reluctance and forming recesses X in the pole-shoes, each of the corresponding pole-shoes of the other member being also formed with a recess E, the faces of the two stator pole-shoes and the two rotor pole-shoes being symmetric. In the advanced timing psition the extension pieces of one member lie opposite the recesses in the other member and are separated in a radial direction by a comparatively large air-gap, the flux break occurring at the points C, F, while in the retarded position the flux break takes place across the extension tips. The circumferential length of a recess and tip on one member is equal to that on the other member. The extensions on one member and recesses on the other member may extend axially the whole length of the members, or the extensions can be staggered in the axial direction along the top and bottom of each pole-shoe, the recesses on the other member being slightly longer than the co-operating extensions. When the extensions are formed on the rotor, the stator may be provided with recesses both at the top and bottom of each pole-shoe.
Patent GB-1496933-A (GB)
Title: Material handling vehicles and systems
IPC: B66F9/06
Filed: 1975-01-30
Abstract: 1496933 Vehicle combinations EATON CORP 30 Jan 1975 [1 Feb 1974] 4055/75 Heading B7H In a material handling vehicle a load handling semi-trailer module is pivotally attached to a powered vehicle module on a pivot axis coincident with the rear drive wheel axis of the powered vehicle, the latter having forward steerable wheels. As shown in Fig. 2 the powered vehicle 12 is electrically driven and is programmed to follow a guide wire buried in a warehouse floor or alternatively the vehicle may be manned. Propulsion motors 34 also drive an hydraulic system for a power-take-off means for various towed vehicles. The vehicle 12 includes a manual control panel 44. The towed vehicle 30 which is a selected one of conventional form used for loading and unloading articles is connected at its forward end to the powered vehicle 12 and supported at the rear end by castor wheels 50. A releasable connection is provided by rail sections 94 formed into a yoke 96, Fig. 5, of the towed vehicle 30 which are received on stub axles 90 of the powered vehicle 12. A bearing cap 98 is bolted to each yoke to surround the stub axle, thus providing a pivotal connection between axles 90 and respective yokes 96.
Patent GB-511137-A (GB)
Title: Improvements in and relating to magnesium alloys
IPC: C22C23/00
Filed: 1938-02-09
Abstract: 511,137. Alloys; heat-treatment. MAGNESIUM ELEKTRON, Ltd. (I.G. Farbenindustrie Akt.-Ges.) Feb. 9, 1938, Nos. 4114 and 23468. [Class 82(i)] A binary or multiple magnesium alloy contains 0.05 to 2.0 per cent. of zirconium, any additional alloying components present being such as are incapable of forming high melting compounds with the zirconium. One or more of the elements zinc, cadmium, cerium, silver, thallium, thorium, copper, bismuth, beryllium, lead and calcium may also be present, preferably in amounts which do not individually exceed 5.0 per cent. A quaternary alloy comprises 0.05 to 2.0 per cent. of zirconium together with zinc and cadmium, the balance being magnesium. The zirconium may be added to the molten magnesium base alloy. The alloys may be annealed at temperatures between 150‹ and 400‹C., and the binary magnesium zirconium alloys may be heated in an atmosphere of hydrogen to a temperature between 300‹ and 600‹C., preferably about 450‹C. Specification 511,291 is referred to.
Patent GB-1531185-A (GB)
Title: Method of writing addresses on a magnetic recording mediu
IPC: G11B27/10
Filed: 1977-02-01
Abstract: 1531185 Memories COMPAGNIE INTERNATIONALE POUR L'INFORMATIQUE CII-HONEYWELL BULL 1 Feb 1977 [31 March 1976] 04116/77 Heading G4C An address for information stored on a track of, e.g. a magnetic disc is recorded in cells C1-C9 (Fig. 3) of a reference zone ZRPij, the cells having a change of magnetization at position P 1  and at either position P 3  or position P 4  in dependence on the associated binary value of the cell, cell C1 having an additional change of magnetization at position P 0  utilized as an index mark. Adjacent addresses on adjacent tracks are in reflected binary code.
Patent GB-884709-A (GB)
Title: Furniture construction of the case goods type
IPC: A47B43/00
Filed: 1959-02-06
Abstract: 884,709. Cabinets. MILLER FURNITURE CO., HERMAN. Feb. 6, 1959 [Sept. 29, 1958], No. 4324/59. Class 52(1) In the construction of cabinets having a rigid top I and rigid bottom 2 and walls 5, 6 provided by a flexible web 7 under tension, the frameworks of the panels 5 have upper and lower angle members 10, 11 joined by a front post 14 and panel 6 has angle members 19, 20 joined by corner posts 17 common with members 10, 11 so that panels 5 are pivotable relative to panel 6 and are moved forwardly into place to apply tension after the web edges have been secured to posts 14 by inserting the web edges, which have stiffener members into channel 50 of member 14, and the top 1 has recessed lower edges to receive the web. Specification 879,588 is referred to.
Patent GB-1045611-A (GB)
Title: Process for production of tetrafluoroethylene polymer
IPC: C08F14/26
Filed: 1964-01-31
Abstract: A process for the production of tetrafluoroethylene polymer comprises partially polymerizing tetrafluoroethylene by irradiation with ionizing radiation, then subjecting the partially polymerized tetrafluoroethylene to post-polymerization in condensed system at temperatures below 0 DEG  C under non-irradiating conditions.  The irradiation may be effected at temperatures below 0 DEG  C., and the process may be effected batchwise or continuously, optionally in the presence of a solvent, e.g. chlorodifluoro methane, perfluoropropane and perfluorocyclobutane.  The irradiation may be provided by an electron accelerator, a Van de Graff generator, cobalt 60, cerium144, X-rays and a -rays. Conversion in the first stage may be less than 30%.  In examples tetrafluoroethylene is polymerized to 5% conversion by radiation from a cobalt 60 source and thereafter post-polymerized in the absence of irradiation. The products are compared with polymers obtained by continued irradiation and by a commercial catalytic process.
Patent GB-390609-A (GB)
Title: Improvements in or relating to lapping wheels, hones or other tools having an abrasive operating face, and to the manufacture of same
IPC: B24D7/00
Filed: 1932-02-13
Abstract: Tools having an abrasive operating face, such as lapping wheels, hones, &c. have the abrasive surface, impregnated with diamond dust, localized at the operating face, the body or bonding of the tool being a plastic material such as artificial resin.  In moulding the tool the portion impregnated with diamond dust which is to form the operating face may be fed into the mould first, followed by the body composition, the two being united during curing; or into a separate rim mould in which it is partly cured and from which it is removed to a mould into which is fed the body composition and where final curing takes place.  The tool may be provided with a metal bushing or face during the moulding operation.  The Provisional Specification describes also the impregnation of the tool throughout with diamond dust. Specifications 349,732, 359,324, and 371,401 are referred to.
Patent GB-266354-A (GB)
Title: Production of a gaseous mixture from pulverised coal
IPC: C10J3/46
Filed: 1927-02-16
Abstract: 266,354. Herzberg, F. Feb. 19, 1926, [Convention date]. Coking processes. - In producing a mixed gas from pulverized coal the latter is fed through a tube c into an externally heated retort a, superheated steam is admitted through pipes d and the coal first parts with its gas and then combines with the steam to form water gas which passes together with the distillates to an outlet f. The residue is discharged through a valve h. The internal cross-section of the retort may be enlarged near the supply tube c, and the pulverized coal may be blown into the retort under pressure by the gaseous mixture obtained in the process or by a similar gas.
Patent GB-826016-A (GB)
Title: Improvements in or relating to telephone relays
IPC: H01H50/58
Filed: 1956-02-13
Abstract: 826,016. Electromagnetic relays. ETABLISSEMENTS BERNIER & CIE. Feb. 13, 1956 [Feb. 18, 1955], No.4374/56. Class 38 (5). Movable change-over contact springs 8 are driven by slots in an insulating block 9 supported by blade springs 11 and operated by an arm 10 of an armature 2 which engages one end of the block. The block is returned, when the relay is de-energized, to operate the springs 8 in the other direction by a tension spring 13 connected at 15 to the outer end of the block 9, the other end of the spring 13 being connected to a fixture 14. There may be two contact pile-ups arranged side-by-side, each pile-up being operated by a separate block 9 and arm 10 (Fig. 2, not shown). In a modification (Fig. 4, not shown) the arms 10 are extended and the blocks 9 are situated at the opposite end of the relay from the armature 2. In another modification (Fig. 5, not shown) the springs 11 are omitted and the block 9 is slidably mounted on a spindle.
Patent GB-765144-A (GB)
Title: Multi-stage radial flow compressors, turbines and pumps
IPC: F04D17/12
Filed: 1955-02-15
Abstract: 765,144. Centrifugal pumps and compressors; radial-flow turbines. SULZER FRERES SOC. ANON. Feb. 15, 1955 [Feb. 16, 1954], No. 4442/55. Classes 110 (1) and 110 (3). In a radial-flow pump, compressor or turbine, comprising a double-walled casing forming at least one annular passage surrounding the stationary interstage deflecting parts of at least two stages, the annular passage communicating through holes with the channels bounded by the deflecting parts, all except at least one of the holes are closed after manufacture of the casing to suit the requirements of the individual machine. The casing 5 of the five-stage suction pump shown has two annular passages 8, 9, separated by a transverse partition 10 and communicating with interstage connections 2, 3 respectively. In addition to holes 11 a, 11b in the stationary interstage deflecting parts 7a, 7b, further holes (not shown) are formed in the deflecting parts 7, 7c. The unwanted holes, which in this instance are those not shown, are subsequently closed by, for example, cast-in plugs of low melting-point alloy, screw plugs or plugs which are inserted in the manner of a bayonet-type connector. Alternatively, detachable flaps may be used, or a band or bands may be applied around the inner wall of the casing to cover the unwanted holes. If the closure means are removable, the duty of the machine can be altered by the user.