baber/WOPTO huggingface dataset:
Patent GB-1031494-A (GB)
Title: Improvements in or relating to processes for the manufacture of substantially homogeneously doped crystals of semiconductor material
IPC: C01B33/02
Filed: 1964-09-23
Abstract: <PICT:1031494/C1/1> A substantially homogeneously doped crystal of semi-conductor material is prepared by deposition of semi-conductor material and doping substance on to a heated substrate.  Both materials are obtained by the thermal decomposition of gaseous compounds which are supplied continuously to the reaction chamber. The ratio of gaseous doping substance and gaseous semi-conductor material supplied to the reaction chamber is maintained constant by passing a constant proportion of gaseous semi-conductor material over the doping substance in liquid form maintained at a substantially constant temperature.  This may be achieved by diverting a part of the gaseous semi-conductor material through a vessel containing the doping material in liquid form.  The temperature of the liquid is maintained substantially constant, the vapour pressure of the liquid determining the proportion of doping substance mixed with the semi-conductor.  In Fig. 1 the gaseous semi-conductor compound (e.g. SiCl4) enters as indicated (3), a part passes the flow resistance 2 (which may be variable) whilst the remainder passes through the vessel of doping substance (e.g. PCl3), the two gas streams reuniting before passing to the reaction chamber.  A carrier gas (e.g. H2) may be used.  The amount of gaseous semi-conductor material may be increased in accordance with the growth rate of the crystal. The carrier body on which deposition takes place may be an elongated monocrystal of the same semi-conductor material to be deposited. A plurality of reaction chambers may be used, each being connected in parallel to a common line supplying the gaseous compound of the semi-conductor material.  A separate vessel containing doping substance may be used in conjunction with each reaction chamber and different doping substances may be used in the different chambers.
Patent GB-1469927-A (GB)
Title: Vehicle steering gears
IPC: B62D5/06
Filed: 1973-08-16
Abstract: 1469927 Vehicle steering systems CAM GEARS Ltd 1 Aug 1974 [16 Aug 1973] 38754/73 Heading B7H A vehicle steering system comprises a powerassisted rack-and-pinion steering gear provided with a relief passage 14 extending from a chamber 7 containing lubricating fluid to the hydraulic reservoir of the system or, as shown, to an exhaust passage 11a of a valve assembly 8. The valve assembly 8 controls hydraulic fluid flow to, and from, a power assistance piston-and-cylinder device (not shown) acting between a rack bar 1 and a rack bar housing 3. The relief passage is provided with a non-return valve 15. The chamber 7 includes enclosures within bellows 6 at opposite ends of the rack bar housing 3, the enclosures being interconnected by a pressure equalizing passage 7a.
Patent GB-1455369-A (GB)
Title: Azomethine pigments and a process for their manufacture
IPC: C08L21/00
Filed: 1974-09-05
Abstract: 1455369 Isoindolin-1-one derivatives CIBAGEIGY AG 5 Sept 1974 [7 Sept 1973] 38775/74 Heading C2C [Also in Division C4] 4,5,6,7 - Tetrachloro - isoindolin - 1 - on - 3 - ylidene hydrazine of the formula is made by reacting 3,4,5,6-tetrachloro-2-cyanobenzoic methyl ester with hydrazine hydrate in the presence of sodium methylate, and heating the reaction precipitate with glacial acetic acid and extracting with methoxyethanol. 5,7 - Dichloro - 4,6 - dimethoxyisoindolin - 1- on - 3 - ylidene hydrazine, 4,5,7 - trichloro - 6- methoxy - isoindolin - 1 - on - 3 - ylidene hydrazine and 4,5,7-trichloro-6-phenoxy-isoindolin- 1- on-3-ylidene hydrazine are similarly made from 4,6 - dichloro - 3,5 - dimethoxy - 2 - cyanobenzoic - methyl ester, 3,4,6 - trichloro - 5- methoxy - 2 - cyanobenzoic methyl ester and 3,4,6 - trichloro - 5 - phenoxy - 2 - cyanobenzoic methyl ester respectively.
Patent GB-1156543-A (GB)
Title: Persistant Alarm Message Sender
Inventor: SHORROCK STANLEY
IPC: H04M11/04
Filed: 1966-08-31
Abstract: 1,156,543. Substation circuits. SHORROCK DEVELOPMENTS Ltd. 29 Aug., 1967 [31 Aug., 1966], No. 38806/66. Heading H4K. An alarm message transmitter responds to an alarm, e.g. the level of water in a reservoir reaching a critical point, by looping a line to an automatic telephone exchange, transmitting to line dialling pulses followed by a spoken message as read from a magnetic tape, then releasing the line and repeating these steps in relation to the called and at least one other substation number until called back from the exchange. The automatic dialler and message transmitter may be as in Specification 1,135,173 and comprises a closed loop magnetic tape on which are recorded serially dialling pulses and a message for each subscriber to be called. Any one of the called subscribers may terminate the transmission by dialling the number of the alarm message transmitter substation at the end of a cycle. A ringing tone detector and a delay, allow one further complete transmission before shutting down or cause shutting down tone to be transmitted.
Patent GB-1474095-A (GB)
Title: Resistors
IPC: H01H85/046
Filed: 1974-09-05
Abstract: 1474095 Fusible resistors ALLEN-BRADLEY CO 5 Sept 1974 [24 Sept 1973] 38813/74 Heading HIS [Also in Division H2]  A resistor comprising an insulating substrate 3, e.g. of alumina, and a resistive film 5 deposited thereon has a fusible link 21 which provides electrical continuity between the ends of the resistor and comprises a metallic layer 12 which melts at a pre-selected temperature to open-circuit the resistor. When molten the fusible material preferably wets contacts 8, 9, see Fig. 5, at the edges of layer 12 rather than the surface of substrate 3, which may be flat or cylindrical. As described, a resistive film 5 of metal, carbon or cermet material is deposited on a core 3 and silver-glass contact bands (6, 7, 10, Fig. 2, not shown) are applied to the ends and centre of film 5. An insulating, e.g. resin, coating 13 is then applied, except over centre band 10, and band 10 is divided into the two contacts 8, 9 by removing material down to core 3, (Fig. 3, not shown). After applying a sensitizing material to the gap, fusible layer 12 is formed, for example electrolytically. Layer 12 comprises cadmium, silver, indium, tin, lead, zinc or a combination thereof. The value of the resistance is adjusted by forming a helical groove 14 in film 5, and an oxidation-inhibiting flux is coated over layer 12. Finally lead wires 2 and a further resin coating 18 are provided. An arrangement is envisaged in which seriallyconnected resistive film 5 and fusible link 21 are provided in thermal communication on opposite surfaces of an integrated circuit chip.
Patent GB-349001-A (GB)
Title: Improvements in or relating to the fixation of ammonianitrogen
IPC: C05C3/00
Filed: 1930-01-29
Abstract: The process for fixing ammonia-nitrogen described in the parent Specification is modified in that the starting material, comprising humic acids or vegetable matter, which contains or resembles humic acids, or is capable of forming humic acids under the conditions of the reaction, is heated in a wet condition under pressure to 200 DEG C. before treatment in a wet or dry condition with the ammonia and oxygen-containing gases.  Alternatively, the starting material is treated first in a wet condition with the ammonia and oxygen-containing gases under pressure and then in the dry condition with the ammonia and oxygen-containing gases.  It is stated in the parent Specification that the products may be used for obtaining cyanides by heating the products with alkali hydroxides or carbonates in the absence of air at temperatures above 700 DEG  C.ALSO:The process for fixing ammonia-nitrogen described in the parent Specification is modified in that the starting material, comprising humic acids or vegetable matter, which contains or resembles humic acids, or is capable of forming humic acids under the conditions of the reaction, is heated in a wet condition under pressure to 200 DEG C. before treatment in a wet or dry condition with the ammonia and oxygen-containing gases.  Alternatively, the starting material is treated first in a wet condition with the ammonia and oxygen-containing gases under pressure and then in the dry condition with the ammonia and oxygen-containing gases.  It is stated in the parent Specification that the products may be used for fertilizing purposes, for case-hardening ferrous metals and for obtaining cyanides by heating the products with alkali hydroxides or carbonates in the absence of air at temperatures above 700 DEG  C.ALSO:The process for fixing ammonia-nitrogen described in the parent Specification is modified in that the starting material, comprising humic acids or vegetable matter which contains or resembles humic acids, or is capable of forming humic acids under the conditions of the reaction, is heated in a wet condition under pressure to 200 DEG C. before treatment in a wet or dry condition with the ammonia and oxygen-containing gases.  Alternatively, the starting material is treated first in a wet condition with the ammonia and oxygen-containing gases under pressure and then in the dry condition with the ammonia and oxygen-containing gases.  It is stated in the parent Specification that the products may be used for case-hardening ferrous metals.
Patent GB-962631-A (GB)
Title: Magnetic materials
IPC: H01F1/24
Filed: 1960-11-15
Abstract: 962,631. Magnetic compositions. WESTERN ELECTRIC CO. Inc. Nov. 15, 1960 [Dec. 3, 1959], No. 39189/60. Heading H1H. Magnetic particles coated with an insulating composition which includes an alkali metal silicate are compressed into a body which is then impregnated with an alkali metal aluminate and heated to anneal the particles and cure the coating. Prior process.-Preferably the particles have a coating of alkali metal silicate, refractory metal (magnesium) silicate and magnesium hydroxide and are prepared according to the prior process disclosed in U.S.A. Specification 2,105,070. In that process fine particles of Ni Fe alloy or Ni Fe Mo alloy are prepared according to Specification 290,736 and coated with a composition comprising 1 part by weight talc or an aluminium silicate, 0.3-0.4 parts sodium or potassium silicate and 0.06 to 0.08 parts magnesium hydroxide. The coating is applied in stages from aqueous suspensions, followed by drying at 270-300 F. after each stage. In the prior process the insulated particles are pressed into shape under 150,000 to 200,000 1b./sq. in. and heated to anneal the particles and cure the coating. Aluminate treatment.-According to the present invention the body after compression but prior to heating, is impregnated with sodium aluminate by dipping it into a 5-10% aqueous solution of the aluminate for 10 to 60 minutes. Core loss is improved. The insulation weighs 0.5-1.5% of the weight of metal powder. Combined process.-The Specification also contemplates the combination of the aluminate treatment above with the " oil treatment" which forms the subject of Specification 962,632.
Patent GB-1082233-A (GB)
Title: Process for securing a plastics collar in the orifice of a vessel, and collars and vessels used in this process
IPC: B65D25/42
Filed: 1964-09-28
Abstract: 1,082,233. Making hollow-ware. TRAVAIL MECANIQUES DE LA TOLE S.A. Sept. 28, 1964 [Sept. 30, 1963; June 22, 1964], No. 39365/64. Heading B3A. [Also in Division B8] In a process for securing a plastics collar 4 in the orifice of a vessel 1, said collar comprising a ring-shaped body having an annular groove 5, in its outer surface, first the collar is inserted and fitted into the orifice so as to fully enclose the channel 5 within the neck and then the neck is deformed around its entire periphery to penetrate into the channel 5 and to contact the collar along two continuous circumferential lines 9, 10. The collar 4 may be reinforced by a reinforcing ring 11 engaged in an outer peripheral groove 12 of the collar, or engaged in an inner peripheral groove (14, Fig. 13). The collar may contain an annular stop flange 6, a destructable closure membrane 7 and an inner thread 8. A reinforcing elastic ring of natural or synthetic material may fill up one of the grooves. Additional reinforcement rings may be disposed on the outside of the collar.
Patent GB-1486306-A (GB)
Title: Kneading apparatus for clay or similar material masses
IPC: B28C1/18
Filed: 1974-09-10
Abstract: 1486306 Mixing KARL HANDLE & SOHNE MASCHINENFABRIK UND EISENGIESSEREI 10 Sept 1974 [13 Sept 1973] 39387/74 Heading B1C [Also in Division B5] Kneading apparatus for the working of clay comprises a kneading rotor 4 rotatable about a horizontal axis in a frame and having at least one flat, elongated kneading plate 13, 14 which is spaced from the axis by spaced crank arms 8, 9, extends axially of the rotor, and presents a flat kneading surface which kneads the clay against a circularly curved reaction surface 2, the or each plate making an acute angle with the surface so that as it moves across the surface it exercises a wedging action on the clay pressing it against the surface and through apertures therein. As described, the kneading plates are mounted on carriers 12 between the crank arms of a member 9 disposed between crank arms 8 extending in opposite directions from the axis 5 of the rotor, angular adjustment of the member altering the angle the plates make with the axis of the rotor. Wedge members 15, 16 determine the angle 17, 18 the kneading members make with the reaction surface 2. The kneading members have bevelled toothed edges. A base portion 28 of the circular reaction surface is perforated and has a wear resistant liner 30, the portion being pivotally mounted so as to be movable to the position shown dotted by the action of hydraulic cylinder 43. Eye bolts with spring washers may hold the base portion in position. Two of the above described apparatus may be arranged symmetrical relative to a vertical plane, the rotors being parallel and rotating in opposite directions to urge the clay with a shearing action against a toothed member .23 between the two apparatus.
Patent GB-1069028-A (GB)
Title: Window balance arms
IPC: E05D13/00
Filed: 1965-09-17
Abstract: 1,069,028. Stays L. BAUDISSON. Sept. 17, 1965 [Sept. 21, 1964], No. 39733/65. Heading E2F. A window balance arm is moulded in one piece from a superpolyamide plastics material, and comprises a blade I having a central journal 2 and end journals 7, 8. End bearings 13, 14 are spaced by integrally moulded bosses 11' from the bar, a central bearing 12 being spaced therefrom by a boss 4 on the arm 1 opposite a boss 3. In a modification, Fig. 4 (not shown) a boss (11) at the base of the journals 7, 8 replaces bosses 11' on the bearings 13, 14. In both embodiments, journals 2, 7, 8 are each moulded with a groove in which seats a clip 10 to retain the bearing in position.
Patent GB-1351676-A (GB)
Title: Photo-degradable polymer compositions
IPC: C08K5/098
Filed: 1971-08-25
Abstract: 1351676 Photodegradable styrene polymer compositions SEKISUI KAGAKU KOGYO KK 25 Aug 1971 [25 Aug 1970 4 Dec 1970 28 Dec 1970 (2)] 39934/71 Heading C3P A composition, which is photodegradable (i.e. under the influence of sunlight or U.V.) comprises an intimate mixture of (1) a resinous polymer which is a homopolymer of styrene or of a styrene derivative, a copolymer of styrene with a styrene derivative, or a copolymer of styrene or a styrene derivative with at most 50% of a copolymerizable monomer, (2) at least one organic transition metal compound in an amount sufficient to render the composition photodegradable and (3) as a photodegrading accelerator, at least one organic bromine compound which contains at least one carbon atom bonded to at least two bromine atoms. Component (2) may be for example a transition metal salt of an organic carboxylic acid or an organic chelate compound of such a metal; i.e. salts of formic, acetic, propionic, acrylic, butyric, methacrylic, naphthenic, benzoic, caprylic, lauric, oleic, stearic, oxalic, malonic, maleic, fumaric, glutaric, itaconic, adipic, pimelic, phthalic and sebacic acids; and chelates which are acetyl acetonates or alkyl acetoacetates. Preferred metals are Fe, Mn, Co, and Cu. A long list of specific examples is given. Examples of the bromine compound are dibromomethane, 1,1-dibromoethane, .2,2- dibromobutane, tribromomethane, tetrabromomethane, 1,1,2,2 - tetrabromoethane, hexabromoethane, 2,2 - dibromopropane, 1,1,2- tribromoethane, 1,1,1,2 - tetrabromoethane, 3,3 - dibromopentane, 2,2 - dibromo - 4- methylpentane, 3,3 - dibromoheptane, 4,4- dibromopentane and 2,2 - dibromooctane; 1,1,2,2 - tetrabromoethane is preferred. Preferred polymers are polystyrene, copoly (styrene/alpha-methyl styrene), copoly (styrene/ methyl methacrylate), copoly (styrene/acrylonitrile), copoly (styrene/butadiene), copoly (alpha methyl styrene/methyl methacrylate) and copoly (styrene/methyl methacrylate/butadiene). The preferred amounts to be used are 0À005-10 parts by wt. (2) per 100 parts of (1) and 0À01-10 parts by wt. of (3), on the same basis. The compositions are moulded into articles such as plates, sheets, films and tubes.
Patent GB-1312708-A (GB)
Title: Dehydrogenation method and catalytic composite for use therein
IPC: C07C5/32
Filed: 1970-08-20
Abstract: 1312708 Dehydrogenation catalyst UNIVERSAL OIL PRODUCTS CO 20 Aug 1970 [21 Aug 1969] 40106/70 Heading B1E [Also in Division C5] A catalyst composition comprises a platinum group component, a germanium component, an alkali metal or alkaline earth metal component, and a porous refractory carrier material. The platinum group component is present as elemental metal in a quantity of 0.01-2 wt%, the germanium is in an oxidation state above that of the metal and in a quantity of 0.01-5 wt% and the alkali or alkaline earth metal is present in a quantity of 0.1 to 5wt%. Specified carriers are (a) refractory oxides, e.g. alumina, titania, zirconia, chromia, zinc oxide, magnesia, thoria, boria, silica-alumina, silica-magnesia, chromia-alumina, aluminaboria, and silica-zirconia, (b) activated carbon. Coke, or charcoal, (c) silica, silica gel, silicon carbide, or clays, e.g. attapulgite, kaolin, diatomaceous earth, fullers earth, (c) ceramics, porcelain, crushed firebrick, or bauxite, or (d) crystalline aluminosilicates, e.g. mordenite and/or faugasite. The germaium components may suitably be present as the oxide, sulphide, halide or oxychloride. The composition is suitably formed by impregnation followed by calcination and then reduction e.g. by hydrogen, and sulphiding. In the Examples gamma alumina containing less than 0.1wt% combined chloride is impregnated with a solution of metallic germanium in chlorine water and a solution containing chloroplatinic acid and nitric acid. This is then followed by impregnation with aqueous lithium or potassium nitrate.
Patent GB-1086493-A (GB)
Title: Improvements in or relating to film packs
Inventor: STEISSLINGER KURT
IPC: G03B17/30
Filed: 1964-10-02
Abstract: 1, 086, 493. Photographic roll-film cassettes. EASTMAN KODAK CO. Oct. 2, 1964 [Oct. 5, 1963], No.40215/64. Heading G2A. A film pack comprises two light-tight chambers 10, 12 each having a longitudinal slot for passage of a film, one of which chambers contains an unexposed film while the other contains a spool 15 to which a leading end of the film is attached, the two chambers being detachably connected together prior to insertion in a camera. The chambers 10, 12 are connected by co-operating recesses 10a and ribs 12a. Each chamber is light-tightly closed by a lid 11 or 13 having an extension 11b or 13b of L-shaped section arranged to lie adjacent the slot 10c or 12d to prevent ingress of light therethrough. The spool 15 is light-tightly secured to the ends of the chamber 12, one end of the spool having a flange which carries a ratchet 15a. A pawl 14 attached to the lid 13 engages the ratchet 15a and thus prevents rotation of the spool in the unwind direction. A recess 11c in the lid 11 indicates the film sensitivity. In further embodiments each chamber is formed from a plurality of parts. For example, both ends of each chamber may be separately formed and connected to the body of the chamber by lighttight joints. In a last embodiment, a conventional film supply chamber is used with a take-up chamber as above described, the two being detachably secured by adhesive tape.
Patent GB-405661-A (GB)
Abstract: 405,661. Cash registers. NATIONAL CASH REGISTER CO., Dayton, Ohio, U.S.A. Aug. 9, 1932, No. 22291. Convention date, Aug. 10, 1931. Addition to 263,196, [Class 106 (i), Calculating &c.]. [Class 106 (i).] The interruption of the cycle of operation as described in the parent Specification may now be prevented by the depression of a special key 100 controlling the printing mechanism to effect one impression only. When this key is set, its stem obstructs a pin 103 on the latch lever 41 so that this is unable to move clockwise to hold the lever 12, 13 in effective position for stopping the drive. Specification 193,850, [Class 106 (i), Calculating &c.], is referred to.
Patent GB-1115858-A (GB)
Title: An improved soil sterilizer
Inventor: PRICHARD HUGH KENNETH
IPC: A01G11/00
Filed: 1966-09-13
Abstract: 1,115,858. Sterilizing soil. HUGH PRICHARD & CO. (NOTTINGHAM) Ltd. 19 May, 1967 [13 Sept., 1966], No. 40753/66. Heading A1E. A soil sterilizer of the kind comprising a drum 10 rotatable about an inclined axis 17 and through which the soil is passed, is provided with agitating means for turning over the soil as the drum rotates and at least one weir for impeding passage of soil through the drum. As described a weir 31 is provided at each end of the drum and comprises a metal annulus disposed in a radial plane. The annulus may be interrupted at one or more positions. The agitating means comprises metal strips 30 extending longitudinally of the drum. Soil is fed into the drum through a shoot 21 and hopper 19. The drum is mounted on a framework 11 supported either on pairs of legs of differing heights or on a pair of legs 13 and a single central leg 14. An oil-burner 26 is provided at the outlet end of the drum.
Patent GB-1520925-A (GB)
Title: Semiconductor device manufacture
IPC: H01L21/027
Filed: 1975-10-06
Abstract: 1520925 Semiconductor devices MULLARD Ltd 6 Oct 1975 40776/75 Heading H1K In a processing step applied to an area 3 of the surface of a semiconductor layer 11 formed on a monocrystalline substrate 10, the location of the area 3 to be processed is defined relative to a reference marker provided at an area 6 of the substrate surface. The semiconductor layer 11, which is initially formed as a polycrystalline layer over area 6 and as an epitaxial layer over area 3, is selectively etched to expose the reference marker for use in the processing step. The reference marker may take the form of an array of oxidized tantalum strips 7, 8 enveloped between a silicon oxide layer 9a and a silicone nitride layer 9b. The processing step may include electron beam etching using a patterned electron beam generated by a photocathode.