baber/WOPTO huggingface dataset:
Patent GB-1156004-A (GB)
Title: Gas Etching for Semiconductor Material.
Inventor: NEWENS LEONARD ERIC
IPC: H01L21/205
Filed: 1966-06-27
Abstract: 1,156,004. Etching. L. E. NEWENS (Motorola Inc.). 27 June, 1966, No. 28743/66. Heading B6J. [Also in Divisions C1, C7 and H1] A crystal element of germanium or silicon is prepared by etching a wafer while heated with a gaseous halide of silicon germanium or hydrogen which may be mixed with hydrogen. The wafers 2, Fig. 1, are covered with an etching resist comprising a film of adherent oxide such as silicon dioxide etched away in selected areas with, for example, hydrofluoric acid. The wafers are etched in a quartz chamber 1, resting on a 6 degrees sloping quartz slab on a graphite or molybdenum susceptor 4 heated by radio frequency energy from an induction coil 5. The chamber is purged of air with nitrogen, and the etching gases, hydrogen and hydrogen bromide or hydrogen iodide are admitted through a removable cap 8. The etching gas renders the quartz and silicon dioxide less susceptible to epitaxial growth, and after etching silicon a germanium tetrachloride (for silicon or germanium wafers respectively) is admitted to the chamber and causes epitaxial growth of silicon or germanium on the exposed part of the crystal, phosphine, dibroane, or amine being added for doping. Thus Fig. 6 shows at step 1 a diode when the growth 24 is of opposite conducting type to the wafer. A transistor structure, Fig. 6, step 4, is formed by covering the diode with a further layer of silicon dioxide 26, partly removing said layer at 27, etching into the growth 24 at 28 and producing a further epitaxial growth 29 of opposite conducting type to the growth 24. In Fig. 7, two P-regions 30, 31 grown in cavites in an N-type material N on a high resistivity P-type material P are electrically isolated from each other by etching a cavity 36 and filling it with a P-type growth 37. In Fig. 8 (not shown), mesa transistor collector junctions are formed by selectively etching in HF vapour in a polyethylene chamber a silicon dioxide layer (39) on a wafer (38), to leave areas (41), and etching in the chamber 1 the unprotected parts of the wafer, forming the member of Fig. 9, step 1, having PN junctions 44, the regions 40 being of opposite conductivity type to the wafer 38. In Fig. 9, step 2, a silicon dioxide layer 45 is deposited by introducing hydrogen bubbled through water in a bubbler (47), Fig. 10 (not shown). After etching, silicon dioxide or other metallic oxide films can be deposited by introducing metallic halide vapour, e.g. silicon tetrachloride, from a bubbler (49), Fig. 11 (not shown) into the chamber. Etching may also be followed by solid state diffusion of an impurity from a source (53), Fig. 12 (not shown). Also, etching after diffusion exposes areas of reduced impurity concentration in the areas etched.
Patent GB-681061-A (GB)
Title: Manufacture of copperable tetrakisazo dyestuffs
IPC: C09B35/40
Filed: 1950-11-24
Abstract: The invention comprises tetrakisazo dye-stuffs of the formula <FORM:0681061/IV (c)/1> where R is a benzene or naphthalene residue containing at least one solubilizing group; the nuclei A and B may carry substituents that are not solubilizing or metallizable groups. These are mde by tetrazodizing a diamine <FORM:0681061/IV (c)/2> and coupling it with one mol. of a disazo dyestuff <FORM:0681061/IV (c)/3> and one mol. of 3-methyl-5-pyrazolone.  The disazo dyestuffs are made by coupling diazotized RNH2 with a 2-acylaminophenol, hydrolysing off the acyl group, diazotizing and coupling with resorcinol.  The tetrakisazo compounds in the form of their alkali salts dye cellulosic fibres by normal procedures; coppering may take place by the one- or two-bath method.  In the examples: (1) the dyestuff 5-amino acid --> 2-formylaminophenol is made in the presence of pyridine and the formyl group then split off; the product is diazotized and coupled with resorcinol and then reacted with tetrazotized p-aminobenzoyl-p-phenylene diamine; finally 3 - methyl - 5 - pyrazolone is added; (2) the dyestuff 4-chloraniline-3-sulphonic acid --> 2-acetylaminophenol is prepared and the acetyl group split off; the product is further reacted as in (1); (3) the dyestuff 3-aminobenzoic acid --> 2-oxalylaminophenol is made and the acyl group hydrolysed off; the product is diazotized and coupled with resorcinol and then reacted with tetrazotized m-amino-benzoyl-p-phenylene diamine; (4) cotton is dyed with the product of (2) and after-coppered.  Other components are listed in which R is a benzene or naphthalene radical containing a carboxylic or sulphonic acid group, with or without halogen, alkyl, hydroxy or alkoxy groups; the rings A and B may contain alkyl or halogen substituents.
Patent GB-647991-A (GB)
Title: Improvements relating to speed-regulating mechanism for internal combustion engines
Inventor: MERRITT HENRY EDWARD
IPC: F02D9/00
Filed: 1948-11-05
Abstract: 647,991. Centrifugal governors. WOLSELEY MOTORS, Ltd. Nov. 5, 1948, No. 28758. [Class 57] A centrifugal governor for an internal combustion engine is contained in a casing 2 and the pivotal axis 3 of the governor lever 1 lies in a vertical plane that is perpendicular to the vertical plane containing the pivotal axis 5 of the throttle valve 4. A link 7 is connected by ball joints 8, 9 to the throttle arm 6 and the governor lever 1. The linkage is arranged so that during motion of the governor lever 1 to close the throttle valve, the end of the governor lever approaches, and at the valve-closing position almost reaches, the plane containing the axis 3 and the ball joint 9 so that as the valve closes, for equal movements of the governor lever, the movements of the valve gradually decrease.
Patent GB-1109984-A (GB)
Title: Process for the production of insulated electrical conductors and cables provided with an electrically conductive outer layer
Inventor: NIESNER HANS
IPC: H01B9/02
Filed: 1965-07-07
Abstract: 1,109,984. Conductive coatings. KABELWERK MEISSEN VEB. 7 July, 1965, No. 28802/ 65. Heading B2K. [Also in Division H1] A process for the production of insulated electrical conductors or cables provided with an outer layer of low electrical conductivity wherein an electrical conductor or cable is provided in known manner with an insulating coating of a thermoplastic synthetic resin, a layer of lower conductivity being put onto the thermoplastic synthetic resin during or immediately after the hot forming thereof. The layer of low conductivity may be applied as a mixture of powdered graphite and dispersed polyvinyl acetate and may be applied when the surface is at 100-170‹C, as a spray employing a pump or compressed air. In the example an electrical conductor (1) with a thermoplastic sheeth (3) is sprayed in device (4) with the above mixture and after drying enters waterbath (6) wherein it is cooled.
Patent GB-1118451-A (GB)
Title: Apparatus for supporting a vertically cast continuous casting
IPC: B22D11/128
Filed: 1965-07-08
Abstract: 1,118,451. Continuous casting. MANNESMANN A.G. 8 July, 1965 [8 July, 1964], No. 29075/65. Heading B3F. A wide casting 2 is supported, e.g. between the mould 1 and conveying rollers, by pairs of opposed rollers 4 each consisting of a number of aligned roller bodies on a stationary shaft 5; beams 6, which extend parallel to the rollers and support the roller bodies 4, being adjustable in a direction normal to the direction of casting travel. Each beam supports a roller 4 at its ends and between its component roller bodies. One body, at one end or the other of the roller, is half the length of the other bodies of that roller. Pairs of opposed rollers 4 are arranged in groups, the diameters of the rollers 4 being larger in successive groups in progression down the train of rollers. The beams 6 are supported resiliently on studs 8 projecting from the sides of support 7 adjacent the narrow sides of the casting. The distance between the rollers 4 of each pair is adjusted by the insertion of spacer rings, on the studs 8, between the ends of the beams 6 and the supports 7. Spring loading of the support rollers 4 is greater nearer the conveying rollers.
Patent GB-448666-A (GB)
Title: Improvements in or relating to methods and machines for capping bottles or other containers
IPC: G02B23/14
Filed: 1935-10-22
Abstract: 448,666. Applying capsules to bottles &c. KING, G. E., 23, North Cross Road, East Dulwich, London. Oct. 22, 1935, No. 29113. Convention date, April 17. [Class 125 (ii)] Capsules &c. in the form of a continuous band of interconnected discs of foil or other suitable material are fed to a device which cuts off the discs from the band, forms them into caps, and applies them and constricts the skirts of the caps about the necks of the bottles &c., the device being caused to perform all the necessary operations by the movements of a single lever. The band of discs which may be stamped with radial serrations, is wound on a spool 1, Fig. 1, and passes over a feed table 6 to the capping head 16. The head 16 is carried in a cross-head 17 sliding on guides 20, Fig. 3, and is operated by a lever 25. This lever carries a roller 26 engaging a cam slot 27 and also a roller 28 bearing on a ramp 29 on a pressure member entering the crosshead 17. As the lever is moved downwards it carries the cross-head down, against the action of springs 33, until it reaches the lower lugs 21, further movement causes the roller 28 to depress a cylinder 37 in the capping head 16 and expand a rubber ring 36 to constrict the cap around the neck of a bottle which has been inserted in the head. The cap is cut off from the band by a device 41 operated at the start of the movement of the lever 25. The feed slide 12 carrying fingers which engage between the discs is moved backwards by the engagement of a roller 51 with a cam 52 at the lever 24 moves downwards. It is held in position by a spring detent until the lever reaches its upper position on the return movement, and is then released to spring forward and carry the next cap into position in the capping head.
Patent GB-355991-A (GB)
Title: Improvements in or relating to electrical distribution boards, fuse-boxes and the like
IPC: H01R9/24
Filed: 1930-09-30
Abstract: 355,991. Distribution boards. SIMPLEX CONDUITS, Ltd. and McLOUGHLIN, H. F., Simplex Works, Garrison Lane, Birmingham. Sept. 30, 1930, No. 29222. [Class 38 (v).] The carrier rail b for the fuses in a distribution board is formed, as shown in Fig. 2, with turned-over or hook-like edges b<1> separated by a longitudinal clearance, the fuse bases being clamped against the open side of the carrier rail by screws d passing through recessed holes a<2> in the fuse bases a<1> and engaging securing members c within the carrier rail. The members c are each formed with a central tapped hole for receiving the screw d and a shouldered portion c<1> at each side for bearing against the inturned edges of the carrier rail the projecting-portions c<3> immediately below the fuse base being of slightly less thickness than that of the carrier rail so that the screws d may be drawn up tightly to hold the fuse-base in position. On slackening the securing screws d the fuse base with its securing member may be slid along the rail into position. The ends of the carrier rail are secured as shown in Fig. 3 with interposed insulation f between plates e held together by screws the upper plate e<1> being mounted on supports within the distribution casing. If desired the washer g beneath the head of the fuse securing screw d may as shown in Fig. 4, extend into adjacent recesses of neighbouring fuse units recesses for the screw itself being formed in adjacent sides of these units. As shown the insulation f at the ends of the carrier bar is extended to cover the ends of the carrier rails, the insulating end caps or sheaths being made from compressible material such as rubber or from rigid moulded insulating material.
Patent GB-877028-A (GB)
Title: Improved colouring process
Inventor: BENNETT GEORGE ARTHUR
IPC: D06P1/651
Filed: 1959-08-27
Abstract: Textile materials of, for example, cellulose or protein fibres, are printed with a paste containing a dyestuff carrying at least one 4 : 6-dihalogeno-1 : 3 : 5-triazin-2-ylamino group and a sulphur compound of the formula:-  D-S-X wherein D is hydrogen or metal, such as an alkali or alkaline earth metal, and X is an organic radical such as a substituted or unsubstituted alkyl, aryl, aralkyl or heterocyclic radical, of which many examples are given.  The textiles are preferably treated before, during or after printing with an acid-binding agent, such as sodium carbonate, trisodium phopshate or sodium metasilicate, or with a substance yielding such an agent on heating, such as sodium bicarbonate or sodium trichloroacetate, and the textiles are finally heated or steamed. The printing paste contains the usual thickeners and adjuvants such as ethyl cellulose, starch, locust bean gum, oil-in-water or water-in-oil emulsions, sodium alginate, urea, sodium-m-nitrobenzene sulphonate and ethanol. Suitable dyestuffs are of the azo, nitro, anthraquinone and phthalocyanine series, and preferably contain solubilizing groups, and in this respect many Specifications are referred to.  Specified sulphur compounds are thioglycollic acid, methylmercaptan, phenylmercaptan, diethyldithiocarbamate, sodium- N-methyl- N-phenyldithio-carbamate, sodium pentamethylene dithiocarbamate, potassium dipropyldithiocarbamate, sodium diphenyldithiocarbamate, potassium ethyl xanthate, ethyltrithiocarbonate, sodium phenyl xanthate, the sodium salt of 2-mercaptobenzthiazole, the potassium salt of 2-mercapto-b -naphthothiazole, 2-mercaptothiophene, 2-mercapto- 4-methylthiazole, 2-mercapto-4-, 5-, 6- or 7-methylbenzthiazole, 2-mercapto-6-nitrobenzthiazole, 2-mercapto-6- or 7-chlorobenzthiazole, 2-mercapto-4 : 5-benzo-1 : 3-thiazine, 2-mercaptobenzoxazole, 2-mercapto-benziminazole, 2-mercaptobenzselenazole, 2-mercaptopyrrole, 2-mercaptopyrrolidine, 2-mercaptopyridine, 4-mercaptopyridine- 2-mercaptopyrimidine and 2-mercaptoquinoline, and preferred compounds are those of the formula:-  <FORM:0877028/IV(c)/1> in which Z represents a selenium or sulphur atom and the benzene ring may carry substitutents, and those of the formula:-  <FORM:0877028/IV(c)/2> in which R2 represents an alkyl radical and R3 represents an alkyl, cyclohexyl or monocyclic aryl radical. Examples are given.  Specifications 209,723, 298,494, 467,815, 503,609, 772,030, 774,925, 781,930, 785,120, 785,222, 805,562, 826,405, 828,353, 829,042, 836,248, 837,035, 837,124, 837,985, 837,990, 838,311, 838,335, 838,337, 838,338, 838,340, 838,341, 838,728, 847,635, 851,537, 852,120, 864,227 and 863,754 are referred to.
Patent GB-494291-A (GB)
Title: Improvements in or relating to actuating systems for controls on aircraft
IPC: B64C13/00
Filed: 1937-01-18
Abstract: 494,291. Fluid-pressure servomotorcontrol systems. SIEMENS APPARATE UND MASCHINEN GES. Jan. 18, 1937, No. 29363 /38. Convention date, Jan. 16, 1936. Divided out of 494,146. [Class 135] As shown, a regulator e to control the admission of fluid to a cylinder i is inserted in the rod b, c and a further regulator e<11> is provided. The piston j is connected to the rod c and the cylinder i is adjustably connected to the lever a. The regulator e<11> comprises a vertically disposed mass 2<11>, Fig. 2, which can move under the action of centrifugal force against the action of a spring g and between adjustable abutments 6<11>, 7<11> to close the pipes o, l and render the regulator e ineffective. This will prevent overstraining due to too steep a dive or climb. The regulator in one form comprises a cylinder 10, Fig. 3, with conduits 4, 5 adapted to cooperate with a recess in the piston 2. Pipes g, h connect the regulator to the operating- cylinder and pipes t, o connect the regulator respectively, to the fluid pressure supply or to exhaust. Set screws 6, 7 permit of control of relative movement between the piston and cylinder. In a modification, the regulator comprises a grooved piston which is actuated manually to connect the appropriate side of the operating-piston to supply or exhaust. In a further modification, the latter construction is modified in that helical grooves are provided in the surface of a rotary piston. The invention may be applied to, e.g. retractable undercarriages. A pressure accumulator may be incorporated in the pressure pipe. Means may be provided for isolating or cutting out the power device in the event of damage to the system. An auxiliary source of power may be provided and the device may be used in conjunction with an automatic pilot.
Patent GB-323571-A (GB)
Title: Improvements in or relating to rail chairs or tie plates or rail chairs combined with steel sleepers for tramways or railways
IPC: E01B9/54
Filed: 1928-10-12
Abstract: 323,571. Wrightson, S. S., and Matthews, C. R. Oct. 12, 1928. Sleepers, integral with chairs; chair plates; chairs with fixed jaws; sleepers, metal, and securing rails thereto.-Rail and key lugs or jaws are formed from rolled or similar sections, other than channel, with a cut face in contact with and edge-welded to a base-plate, chair plate or sleeper, for use with either flange or bull-head rails. Fig. 2 shows an angle jaw J edge-welded at E to a base S and provided with a bolt-hole for securing the rail. An H or Z iron may be similarly used. A bar L is edge-welded below a sleeper to enter the ballast. A similar bar mav be welded above a sleeper, &c., to prevent spreading of the gauge. In Fig. 8, the jaws are H-section, the jaw JH engaging the rail R and the jaw J engaging the key K. A T or trough bar may also be used. Specification 304,496 is referred to.
Patent GB-906875-A (GB)
Title: Liquid dispensing pumps
IPC: F04B53/12
Filed: 1959-08-28
Abstract: 906,875. Reciprocating pumps. DRACKETT CO. Aug. 28, 1959 [Sept. 9, 1958], No. 29468/59. Class 102 (1). A pump mounted on a cap 12 for attachment to a container has a collar 70 which has a sealing lip 73 engaging the plunger 28 to prevent leakage from the air inlet holes 40, and a surface 76 which is sealingly engaged by a sealing portion 48 on the discharge head 29 when the plunger is in the depressed and immobilised position, where it is held by friction between the portion 48 and surface 76; in addition a cap 86 can be screwed on to the collar 70 to hold the plunger in the depressed position and prevent leakage. The conical surface 92 on the cap 86 co-operates with similar conical surfaces presented by annular surface 57<SP>1</SP> surrounding the outlet 62 and the outer surface of a rib 94. In the depressed position a portion 34 on the plunger engages and holds closed the valve 22 which at the same time closes the plunger passage 36. In a modification the end 34 has a skirt portion which engages an elongated bore above the ball valve. The valve housing has internal valve guide ribs 24 and detents 26 for retaining the ball; the pump being formed of plastic material, the ball may be forced past the detents 26 during assembly.
Patent GB-533631-A (GB)
Title: Process and apparatus for producing zinc
IPC: C22B19/14
Filed: 1939-11-06
Abstract: 533,631. Distilling metals. BYRNE, E. L. W. (American Smelting & Refining Co.). Nov. 6, 1939, No. 29494. [Class 82 (i)] In a process for reducing zinc or like metal by a carbonaceous reducing agent of the kind wherein the reaction products are passed as a stream through a bed of incandescent carbonaceous material, there is added to the stream such an amount of an oxidizing gas, for example carbon dioxide, or the stream is caused to have such a carbon dioxide content, that carbonaceous particles suspended therein are consumed. In the plant shown, the charge, which may consist of roasted zinc ore and coke dust, is reduced in a shaft furnace 70, and the reaction products, with carbonaceous particles in suspension pass by a conduit 96 to a coke column 124, carbon dioxide from the combustion chamber 72 of the shaft 70, or other oxidizing gas, being admitted to the conduit 96 through an inlet 98 in an amount sufficient to convert entrained carbon particles into carbon monoxide and to cause the coke in the column 124 to operate continuously. The zinc vapour passes from the top of the column 124 to a condenser. Specification 440,597 is referred to.
Patent GB-1363808-A (GB)
Title: Process for the addition of silicon compounds with si bonded hydrogen to compounds with alipathic multiple bonds
IPC: B01J27/10
Filed: 1972-06-23
Abstract: 1363808 Hydrosilation catalysts WACKERCHEMIE GmbH 23 June 1972 [25 June 1971] 29565/72 Headings C3S and C3T Catalysts for the hydrosilation of aliphatic multiple bonds comprise a reaction product of chloroplatinic acid and a ketone in the form of a solution of the reaction product in the ketone that has been employed for its manufacture, there being present at least 20 parts by volume of ketone per part by weight of chloroplatinic acid and the relationship between weight and volume being that of grams to millilitres. The ketone is preferably a monoketone free from aliphatic multiple bonds, e.g. methylethyl, methyl n-propyl, methyl iso-butyl, methyl namyl, diethyl, ethyl n-butyl or ethyl isoamyl ketone, acetophenone or cyclohexanone. Reaction with the chloroplatinic acid is effected by heating or standing, preferably in absence of light, liberated water of reaction preferably being removed from the solution. In examples trichlorosilane is reacted with allyl chloride, vinyltrichlorosilane, propene, ethylene, pentene- (1) and acetylene to give 3-chloropropyltrichlorosilane, bis - 1,2 - trichlorosilyl ethane, npropyltrichlorosilane, ethyltrichlorosilane, npentyl trichlorosilane and vinyltrichlorosilane respectively, methyldichlorosilane is reacted with propene, ethylene, pentene-(1) and acetylene to give n-propylmethyldichlorosilane, ethylmethyldichlorosilane, n - pentylmethyldichlorosilane and methylvinyldichlorosilane respectively, dimethylchlorosilane is reacted with acetylene to give dimethylvinylchlorosilane, all in the presence of the above catalysts. In further examples (13) a vinyldimethylsiloxy terminated dimethylpolysiloxane is mixed with pyrogenic silicon dioxide, quartz powder, calcined and ground aluminium silicate and a copolymer of dimethylhydrogenosiloxane, methylhydrogensiloxane and dimethylsiloxane having 0À33 Sibonded hydrogen atoms per Si atom and warmed to 150 C. with a catalyst as above to give a non-tacky elastomer, or alternatively (14), a vinyldimethylsiloxy terminated dimethylpolysiloxane is mixed with a trimethylsiloxy terminated methylhydrogenopolysiloxane and a catalyst as above and the mixture is dissolved in toluene, diluted with an alkane mixture of B.P. range 80 to 110 C., coated on to glassyne paper and heated at 150 C. to form non-stick coatings.
Patent GB-407895-A (GB)
Title: Improvements in or relating to supporting means for trousers and the like
IPC: A41F9/02
Filed: 1933-10-25
Abstract: 407,895. Supporting means for trousers &c. POWE, G. H., and POWE, Ltd., H., 165, Regent Street, London. Oct. 25, 1933, No. 29578. [Class 141.] To maintain trousers in position on the wearer and in addition to prevent a shirt from " riding-up " extensible devices 1 are employed, which have buttonholes 3, or other fastening elements, 'to engage with buttons or the like on the waistband. The device may be made of india-rubber to which is cemented pieces of sponge rubber 4 for engaging the shirt. The button holes may be engaged through slots in the waist band.