baber/WOPTO huggingface dataset:
Patent GB-580720-A (GB)
Title: Improvements relating to the manufacture of sheet metal casings
IPC: B21D51/18
Filed: 1939-01-26
Abstract: 580,720. Making casings for explosive mines. GORDON, S. H. Jan. 26, 1939, No. 2756. [Classes 83 (ii) and 83 (iv)] Welding; joints.-A sheet-metal casing for explosive mines of the kind consisting of a short, central cylindrical section and two end sections of hemispherical shape is made by forming each end section 10 as a spherical frustum considerably less than a hemisphere and uniting them to a central section which is initially cylindrical and which is deformed to provide two marginal parts 18, spherically curved to constitute the missing portions of the two hemispheres and a central cylindrical part 16. Smaller sheets may thus be used in making the end sections so as to reduce scrap, enable cheaper steel to be used, and permit of cold working. The end sections may be of 20 inches radius of curvature and 18 inches deep-and the central section may be made from a metal strip which when joined makes a cylinder of the same diameter as the frustum and of 18 inches depth. A cylinder may be made of a diameter less than the required finished diameter and deformed by stretching a number of radial plungers operated by toggles, hydraulic rams, &c., the stretching varying over the width of the strip and being greatest over the central portion, leaving the edges spherically curved but unstretched. The parts may be connected by automatic electric resistance welding, the parts being oversize at 22, 20 so as to provide excess metal which is burned away during welding. The part 16 may be of slightly thicker metal than the parts 10, thus producing welds with ledges 24 inside the casing. According to the Provisional Specification, uniting may be effected by flash welding, arc welding, or seam welding.
Patent GB-680653-A (GB)
Title: Improvements in or relating to production of glutamic acid
Filed: 1950-02-06
Abstract: Monoclinic glutamic acid crystals are made by (1) crystalling from a mixture of an aqueous solution of monosodium glutamate, monoclinic glutamic acid crystals as seed crystals, and sufficient non-oxidizing mineral acid to adjust the pH of said solution to between about 2.5 and about 4, preferably 3.0 to 3.3; or (2), if no seed crystals are available, by crystallizing from an aqueous solution containing 5-15 per cent monosodium glutamate to which has been added with agitation within about thirty seconds sufficient non-oxidizing mineral acid to adjust the pH as under (1).  In process (1), the aqueous solution may contain 5-40 per cent monosodium glutamate, and the process may be continuous.
Patent GB-1287512-A (GB)
Title: Article orienting and transferring apparatus
Inventor: DEVOL GEORGE C
IPC: B25J9/00
Filed: 1970-01-21
Abstract: 1287512 Programmed electric control UNIMATION Inc 21 Jan 1970 2992/70 Heading G3N [Also in Division B8] In an apparatus for transferring an article A Fig.2 from place to place and for adjusting it into a prescribed orientation about an axis through the article, an article holder 24, e.g. an electromagnet or vacuum device, is moveable, e.g. by being mounted on an arm 16 horizontally swingable on a vertically moveable shaft 12, to transfer the article from place to place under the control of a program drum 70 in a control circuit, Fig. 6 and is rotatable about said axis, e.g. by a motor 22 the apparatus having means for detecting angular departure of the article from the prescribed orientation, this means including means for representing the article in the prescribed orientation and means for comparing the actual orientation with the representation, means being responsive to the angular departure detecting means for providing control of the rotation of the article holder through the angle of departure. Under the control of the program drum 70 and associated position-instruction pick-up head 76 and function-instruction pick-up head 78, the article is taken by holder 24 from supply point to an inverting device 30 Fig.3, the face of the article being specially coated so that a photoelectric cell 66 detects if the article is wrong side up. If this is the case the article is released on to a plate 40, covered by a plate 48 and the whole is inverted by rotation about a shaft 38. The holder 24 is programmed to then remove the article and transfer it to the angular departure detecting means. If the article is already right-side-up the inverting device is by-passed. The detecting means has a sensor 136 which has photo-electric cells to detect the outline of the article placed upon it. The photo-electric cells may be positioned so as to define the outline of such an article in its prescribed orientation or they may form a matrix, the signals generated from such a matrix when an article is in the prescribed orientation being recorded in a memory circuit Fig.7 (not shown). In either case the signals from the photo-electric cells when the article is placed on the sensor 136 are compared with those obtained when the article is in its correct orientation and the difference signal is used to actuate motor 22 which rotates the article holder until the article is correctly oriented when it is transferred to the receiving station 34 e.g. for machine tool processing. The transference of each article to each station in turn, the actuation of the inverting device 30 in response to the photoelectric cell 66 and the actuation of orienting motor 22 in response to signals from sensor 136 are controlled by the program drum 70 in control circuit Fig. 6. The program drum is indexed along so that the pick-up heads 76, 78 receive new programmed instructions only when the previous instructions have been correctly carried out.
Patent GB-274742-A (GB)
Title: Liquidized crude rubber and method of making same
IPC: C09D107/00
Filed: 1927-02-02
Abstract: 274,742. Butler, H. P. Feb. 2, 1927. Indiarubber adhesives and solutions.-An easily-flowing but strongly adhesive solution suitable for coating fabrics &c. is obtained by dissolving crude rubber in a solvent such as benzol, with or without carbon tetrachloride, and heating to about 100‹ C. for two or three hours. Gums such as Damar, copal, and Kauri gum, oils such as china wood and linseed oils, and cellulose products such as pyroxylin may be incorporated with the product, with or without thinners and driers.
Patent GB-453096-A (GB)
Title: Glass wool and an improved method of treating the same
IPC: C03C25/255
Filed: 1936-01-31
Abstract: Glass wool fibres are coated with a film deposited from an emulsion of oil and water; owing to the presence of water the emulsion is non-inflammable so that the coating may be carried out at a temperature which would constitute a fire hazard where hydrocarbon oils alone are employed.  The water evaporates or is evaporated, leaving a residual oil film on the glass wool.  The emulsion may comprise bright stock mineral oil, water, bentonite, stearic acid and triethanolamine, and may be further diluted with water before application.  Steam-refined cylinder oil or crude scale paraffin wax may be substituted for the bright stock mineral oil; caustic soda or potash substituted for triethanolamine; fatty acids such as oleic substituted for stearic acid, and ordinary starches, pectin, agar, gelatin, Karaya gum and the like substituted for bentonite.  Ammonia may be added to the emulsion, the ammonium soaps formed rendering the coating waterproof; alternatively methyl or ethyl amine may be used. Calcium chloride or other deliquescent salt may be added to render the coating permanently non-inflammable.
Patent GB-161018-A (GB)
Title: Improved means of locking the steering gears of motor-vehicles
IPC: B60R25/021
Filed: 1920-02-02
Abstract: 161,018. Woodcock, W. J., and White, H. W. Feb. 2, 1920. Guarding against unauthorized use.-The steering pillar of an automobile is locked by a permutation mechanism secured to it by a carrier ring b, which may be formed with two arms, b<1>, b<2>, bolted at b<3>, or which may be circular and slid over the shaft before attachment of the wheel. The body member a of the lock may be secured to the carrier ring by countersunk screws s, which are rendered inaccessible by the mounting of the setting rings e on the cylindrical part d of the body member, or may be integral with the carrier ring. The bolt e slides in a peripheral recess d<1> in the solid part d and has notches which are engaged by inner collars on the rings e. The rings have notches which in certain positions allow the bolt to be pushed forward through a hole in the body member a, to lock the steering shaft against rotation.
Patent GB-876974-A (GB)
Title: Improvements in electro-mechanical switching assemblies
Inventor: BIRMINGHAM MURROUGH PATRICK
IPC: H03K17/52
Filed: 1959-01-28
Abstract: 876,974. Valve relay circuits. BRITISH ROTOTHERM CO. Ltd. Jan. 4, 1960 [Jan. 28, 1959], No. 3100/59. Class 40(6) A circuit for operating a microswitch in from the armature of a relay RA comprises a coldcathode gas-filled tube 12 which operates the relay RA sufficiently to close contacts ra2 so that the operating current is increased sufficiently to operate the microswitch m. The extra energizing current required is provided via the holding contacts ra2 in series with a rectifier 13 which permits operation from alternating current supply connected to terminals 17, 18. Tube 12 is fired when a bimetallic strip 23 engages contact 25 and is extinguished by the holding contact ra2. When the bimetallic strip 23 engages contact 26, the release tube 15 is fired, increasing the voltage drop in resistor 16, releasing the relay.
Patent GB-1375792-A (GB)
IPC: E04G21/16
Filed: 1972-01-24
Abstract: 1375792 Drip-tray for cement MANUFACTURE D'ARMES & CYCLES DE CHATELLERAULT 24 Jan 1972 [28 Jan 1971] 3197/72 Heading E1S A tray, which may be used as a drip-tray under a cement mixer, is of generally parallelsided shape with one end portion 4 of reduced width and has a continuous raised peripheral rim 1 which defines an outer boundary wall 10 deeper than the interior depth of the tray, so that in use the edge of the wall 10 supports the tray on the ground. Parallel grooves 2, 3 are formed in the sides of the hollow rim for strengthening it. The tray is made of a plastics material, resistant to abrasion and chemically unreactive with cement. The corners of the tray are rounded.
Patent GB-894987-A (GB)
Title: Improvements in or relating to high-frequency apparatus
IPC: H01F21/00
Filed: 1959-01-29
Abstract: 894,987. Transformers. PHILIPS ELECTRICAL INDUSTRIES Ltd. Jan. 29, 1959 [Feb. 1, 1958], No. 3211/59. Class 38 (2). [Also in Group XL (c)] A 40 Mc/s. transformer comprises two single. turn coils 2, 14 of copper strip secured to each other by insulators 18 and to a base by insulators 19. A conjoint insulating control-spindle 15 varies the effective inductance of the coils in opposite senses by the rotation of radial arms 16, 17, respectively provided with spring-loaded contact pins 33, 34, respectively, to afford coil tappings. The arms 16, 17 are connected each to one of the input and output leads 36, 37, respectively; by fixed plates 25, 26, respectively, bearing spring-loaded contact-pins such as 35- bearing on the sleeves 23, 24, by which the arms 16, 17 are attached to the spindle 15.
Patent GB-574551-A (GB)
IPC: H01J25/56
Filed: 1943-02-27
Abstract: 574,551. Magnetrons. PATELHOLD PATENTVERWERTUNGS- & ELEKTROHOLDING AKT.-GES. Feb. 27, 1943, No. 3254. Convention date, Feb. 9, 1942. [Class 39 (i)] The oscillating circuit of a magnetron consists of a hollow resonator H comprising inner and outer cylinders and radial side plates. The inner cylinder is divided into segments S extending alternately to the radial side plates, and preferably formed of heat-resisting material such as tantalum. Alternatively, the segments may be formed of strips or rods attached to the side plates by soldering &c. Radiation from the central aperture may be suppressed by side plates P<1>, P<2> which carry the cathode K and grid G. In an alternative arrangement the cathode may be arranged outside the plate P<2> which may function as a control grid. A further modification is shown in Fig. 4, in which the side plates are utilized to form an all-metal evacuated container, the cathode leads being carried through insulating bushings V ; shielding plates are mounted in the cathode space to screen the inner cylinder from the anode potential of the side walls. In this arrangement the poles of the field magnet may be recessed to house the bushings V and permit their closer approach to each other. Tuning may be effected by distorting the shape of the resonator or by the adjustment of a movable piston; air or liquid cooling may be utilized. The output line may be a loop L or a Lecher line with its ends closed by a variable capacity.
Patent GB-856730-A (GB)
Title: Stretching machines
IPC: B21D11/02
Filed: 1958-01-31
Abstract: 856,730. Stretching. HYDRAULIK G.m.b.H. Jan. 31, 1958 [March 30, 1957], No. 3312/58. Addition to 838,632 and modified by 844,897. Class 83 (4). Apparatus for stretching metal sheets includes crossheads, for gripping the ends of a sheet, one of which crossheads is pushed away from the other, to stretch the sheet, by hydraulic means between the crossheads, the movable part of the hydraulic means acting through pressure-members which extend from the means to the movable crosshead, pressure members extending also between the fixed crosshead and a stationary part of the hydraulic means to take up reaction, is characterized in that shock-absorbing means is provided for pressure-members which extend to the crosshead which remains stationary during stretching, the inner ends of which pressure-members are secured to pistons in the same cylinders as pistons which, during stretching, move the pressure members extending to the movable crosshead. A crosshead 1 gripping one end of a sheet is pushed away from a stationary crosshead 2 gripping the other end of the sheet by a pair of pressure-members 5 extending, one on each side of the sheet, between centrally-disposed hydraulic cylinders 3 and the crosshead 1, pistons 4 in the cylinders 3 being connected to the members 5 which have means 10 adjustably locked thereon to abut the crosshead 1. Stationary pressure-members 6 extend from the cylinders 3 to the stationary crosshead 2, locking- members 9 on the members 6 abutting the crosshead 2. Pistons 7 on the inner ends of the members 6 are normally held stationary in the cylinders 3 by shock-absorbing means 8 which each include a piston 26, connected by a rod 25 to a member 6, normally held pressed against the end of a cylinder 27 by pressure liquid from a reservoir 16 loaded by air pressure. If a sheet should tear while being stretched the resultant shock moves the piston 7 back, the piston 26 moving back in its cylinder 27. The pressuremembers 6 may alternatively be backed by plate-springs instead of the means 8. The positions of the crossheads 1, 2 are adjusted prior to stretching by rods 11 moved by pistons 12 in cylinders 13 normally closed at their outer ends by pistons 14 pressed against stops 17 by pressure from the reservoir 16. If a sheet breaks during stretching the resultant shock moves the piston 14 back.
Patent GB-444980-A (GB)
Title: Improvements in or relating to telegraphy
IPC: H04L25/42
Filed: 1935-02-01
Abstract: 444,980. Type - printing telegraphy. INTERNATIONAL BUSINESS MACHINES CORPORATION, 270, Broadway, New York, U.S.A.-(Assignees of Lemmon, W. S., and Fitch, C. J.) Feb. 1, 1935, No. 3369. Convention date, Feb. 10, 1934. [Class 40 (iii)] In a type-printing system in which the transmitter and receiver are provided with synchronized distributers, and characters are denoted by the phases in the revolution at which impulses are transmitted so that a particular phase belongs to each character, the depression of a key in the keyboard discharges a condenser and an impulse is transmitted through the charging of the condenser under control of the sending distributer. The same apparatus serves for sending and for receiving. The distributers are synchronized by means described in Specification 442,596. Transmitter. With each key 1 of the keyboard is associated a condenser 11 which is normally charged. When a key 1 is depressed, the condenser is short-circuited and remains discharged until the wiper 7 of the sending distributer reaches the contact 6 corresponding to the key in question. The condenser is then recharged by battery 16 through resistance 15 and contacts 14, and the potential-drop in resistance 15 causes the transmission of a signal by the transmitter 20. A local record is made by type-bars 3 on depression of the kevs. Receiver. For reception the switch 38 is thrown so as to open contacts 14 and close contacts 37. Then an impulse received by the receiver 23 is routed by the distributer 28 to the appropriate magnet 26 which operates a selected type-bar 3 by actuating the corresponding key 1.
Patent GB-710675-A (GB)
Title: Propeller system for vessels with at least two propulsion screws
Inventor: MOLLER FREDRIK
IPC: B63H23/00
Filed: 1952-02-08
Abstract: 710,675. Automatic synchronization control. FORSVARETS FORSKNINGSINSTITUTT. Feb. 8, 1952, No. 3377/52. Drawings to Specification. Class 38(4) In a system for automatically synchronizing the propellors of a craft, wherein pulses from tachometer-generators driven by the propellor shafts, are compared in a phase discriminator controlling a servomotor operating the throttle of the slave propulsion unit (or the pitch of a variable pitch propellor), manually operable means are provided to adjust the relative phase at which the propellors are synchronized in order to reduce vibration. The relative phase adjustment is provided either by rotating the stators of the tachometer generators, or by connecting a phase-shift unit in the supply from one of the generators.
Patent GB-207728-A (GB)
Title: Improvements in packing rings for pistons
IPC: F16J9/26
Filed: 1923-02-05
Abstract: 207,728. McLeod, N. W. Feb. 5, 1923. Drawings to Specification. Piston packing.-In order to secure rapid fitting of a cast-iron or other piston-ring to its cylinder, the wearing surface is faced with a thin layer of zinc, copper, or alloy by electrodeposition, which wears off in places.
Patent GB-876068-A (GB)
Title: Method and apparatus for electric arc cutting
Inventor: CRESSWELL ROBERT ARTHUR
IPC: B23K9/00
Filed: 1957-01-31
Abstract: 876,068. Cutting by electric arcs. BRITISH OXYGEN CO. Ltd. Jan. 21, 1958 [Jan. 31, 1957], No. 3475/57. Addition to 872,726. Class 83 (4). An improvement in the electric arc cutting device claimed in the parent Specification consists in providing an auxiliary nozzle 18 which directs a jet of fluid into the cut to remove unwanted material therefrom. The tungsten non- consumable electrode 7 is axially adjustable and projects through a graphite insert 6 in a main copper nozzle 1 which is circulated with a coolant through conduits 3, 4. An inert or reducing shielding gas surrounds the arc and may be nitrogen or a mixture of hydrogen and at least one of the gases nitrogen, argon, carbon dioxide or gaseous hydrocarbons such as methane, propane or acetylene. The insert 5 forms a secondary electrode fed through conduit 4 from a high-frequency generator 15, Fig. 2 (not shown), for ionizing the shielding gas. An auxiliary electrode 18 of tungsten carbide is adjustably mounted on a collar at the rear of the main nozzle to direct a parallel or inclined thin jet of fluid into the cut. The auxiliary nozzle may extend into the cut. The main and auxiliary nozzles may alternatively be formed integral with each other. The fluid may be compressed air carbon dioxide, oxygen, hydrogen, nitrogen, argon or water. References are made to cutting ferrous metal including stainless steel, and aluminium. Specific examples are given including the voltage, current and consumption of shielding gas and auxiliary fluid. Specification 859,363 also is referred to.
Patent GB-827762-A (GB)
Title: Improvements in or relating to processes for the production of semi-conductor devices
IPC: B30B11/34
Filed: 1957-01-31
Abstract: 827,762. Semi-conductor devices. SIEMENSSCHUCKERTWERKE A.G. Jan. 31, 1957 [Feb. 8, 1956], No. 3482/57. Class 37. In a process for producing semi-conductor devices comprising one or more electrodes, electrode material is applied to the surface of a semiconductor member and both are embedded in a pulverous substance which does not react with either, and which is compressed and heated so that the material and the member are alloyed together. As shown, Fig. 3, a disc 8a of P-type silicon is placed between pieces of aluminium foil 8b and gold foil 8c containing 1% antimony, the components 8a-8c are sandwiched between two tablets of powdered graphite 4a, 4b, previously formed by compression in metal tubes 2, 6 respectively, and the tablets are pressed together to form a uniform mass of graphite powder 4, Fig. 4, between two plungers 7, 9 of compacted graphite in tube 2, the whole being held together in a clamping frame 10 provided with a pressure screw 11 and heated to 800‹ C. for 30 secs. to effect the alloying. The semiconductor member may be germanium or an intermetallic compound of elements of the 3rd and 5th groups of the Periodic System. The pulverous substance may be magnesium oxide, aluminium oxide, &c., or a mixture thereof, and heating may take place in vacuo, in an inert atmosphere, or in air. Fig. 5 depicts a transistor produced in accordance with the invention comprising a semi-conductor member 16, a base electrode 13, a collector electrode 15, and an emitter electrode 14 located within a groove in the member 16.
Patent GB-162794-A (GB)
Title: Improvements in or relating to electrical transformer arrangements
IPC: H01F27/42
Filed: 1920-02-04
Abstract: 162,794. Berry, F. E. Feb. 4, 1920. Systems depending on the use of static transformers.-In order to secure a correct distribution of the load between a pair of transformers A, B connected in parallel, each of the primary windings e, f of the respective transformers is connected at one end to the main g and at the opposite end to one of the terminals of a regulating-winding k, which has an intermediate tapping m connected to the other main h. The point m is so chosen that the number of turns included in the two primary circuits is in inverse proportion to the required outputs of the transformers. The regulating-winding may be placed in the secondary circuits instead of in the primary circuits, or a regulating-winding may be included in each circuit. The winding may have a number of tappings m connected to a set of contacts p associated with a switch arm s, as shown in Fig. 4. According to the Provisional Specification, the invention may be applied to three or more transformers, the primary windings of two of the transformers being connected to the ends of the regulating-winding, while the primary windings of the remaining transformers are connected to intermediate points of the winding.
Patent GB-764365-A (GB)
Title: A peat digging machine
IPC: E21C49/00
Filed: 1955-02-07
Abstract: 764,365. Earth-excavating apgaratus. AKTIEBOLAGET HISSFABRIKEN. Feb. 7, 1955 [Feb. 9, 1954], No. 3499/55. Class 68 (1). In a peat-digging machine a rigid structure comprising the boom 17 of an endless chain excavating means and the casing 19 of an extruder into which the disintegrated peat is projected by the excavating means is pivotally mounted on a driven shaft 7 from which a drive is taken to the moving components of the excavating means and to the extruder, the shaft 7 being mounted in the mobile chassis of the machine. The structure 17, 19 is rotated about the shaft 7 by an hydraulically-actuated jack 24. The piston of the jack 24 abuts an arm 23 of a lever pivotally mounted on the chassis, and the other arm of the lever is connected by a link 20 to the boom 17.