baber/WOPTO huggingface dataset:
Patent GB-862044-A (GB)
Title: Semiconductor assembling apparatus
IPC: H01L21/00
Filed: 1959-07-21
Abstract: 862,044. Semi-conductor devices. TEXAS INSTRUMENTS Inc. July 21, 1959 [July 31, 1958], No. 24982/59. Class 39. [Also in Group XXIII] In apparatus for assembling a semi-conductor element and. a contact element in a desired engaging relationship and for enclosing them in an envelope, comprising a holder having two separable portions, one of which holds the semiconductor element and part of the envelope and the other of which holds the contact element and the remainder of the envelope, the two portions having mating surfaces such that when the portions are assembled the semi-conductor and contact elements assume the desired engaging relationship, the joint between the envelope parts is fused by heat produced by R.F. currents and concentrated in the locality of the joint by a conductive heating member carried by one of the portions of the holder, the heating member being totally enclosed within the holder when the latter is assembled, thus prolonging the life of the heating member by protecting it from oxidation. As shown, a holder 10 comprises a lower portion 14 adapted to hold a sub-assembly consisting of a semi-conductor element 24 mounted on a molybdenum plug 25 which is sealed into a glass tube 22 and to which is connected a lead 18, and an upper portion 12 adapted to hold a second sub-assembly consisting of a cat's whisker 26, a lead 16, and a glass bead 20. Upper and lower portions 12, 14 comprise sections 28, 42, made of boron nitride, alumina, or other material capable of withstanding high thermal shock, having tapered surfaces which fit together thus positioning the two sub-assemblies with respect to one another. The axial position of the first sub-assembly may be adjusted by moving, by means of a threaded plug 60, a tube 58 of brass, copper, &c., which is located in a bore in the lower portion 14 and which serves to support the glass tube 22 and to accommodate the lead 18. The lead 16 is held by a magnet 38, and the pressure on cat's whisker 26 is applied by a weight or plunger 40. The glass bead 20 fits into the mouth of the glass tube 22 and is sealed therein by R.F. energy supplied to a coil 65 and concentrated around the area of fusion by means of a conducting annular heating member 56, preferably of graphite.
Patent GB-599983-A (GB)
Title: Improvements in or relating to metallic packings for stuffing boxes
IPC: F16J15/28
Filed: 1945-09-27
Abstract: 599,983. Stuffing-boxes. KERMODE, W. M. Sept. 27, 1945, No. 25038. [Class 122 (v)] The invention relates to joint arrangements between pipes and stuffing-boxes consisting of groups of elastic metal packing rings 12, 18 in housings 14, 20, located between an outer casing 10 and an internal cylindrical element 11, the housing of each group being spring- pressed against spherical conical or radial bearing surfaces. The invention consists of preventing steam or gas entering the annular space between packing element housings and the walls of the casing, by a sealing means 23 disposed between the bottom of the stuffing- box and the nearest housing, axial pressure being applied by a split ring 17 separated from the bottom of the stuffing-box by at least one group of packing elements 24 is a leak-off pipe for such small amount of steam as might accumulate owing to inaccuracy in the working surfaces. Specification 452,383 is referred to.
Patent GB-924749-A (GB)
Title: Mechanical storage device
IPC: H04M1/272
Filed: 1960-07-19
Abstract: 924,749. Mechanical digital-data storage apparatus. INTERNATIONAL BUSINESS MACHINES CORPORATION. July 19, 1960 [July 27, 1959], No. 25080/60. Class 106 (1). A rotating shaft 6 carries members 7 which are urged into a storage position between a guide plate 13 and a base 1 by the action of a lever 9 operated by solenoid 3 in response to input data derived from punched cards, elements in the storage position being sensed by a contact 4 to produce output pulses. Data may be regenerated by causing the output pulses to control solenoid 3 in setting elements 180 degrees out-of-phase with those being read. In a second embodiment, Fig. 3, balls are located in notches 24 on the circumference of a rotating disc on one side or the other of a guide plate 25 in the plane of the disc, those balls on the significant side being urged there by an electromagnet 3 and acting on a lever 27 to generate output pulses, afterwards being reset by a permanent magnet 28.
Patent GB-438285-A (GB)
Title: Improvements in or relating to electric oscillators for use with cathode-ray tubes
IPC: H03K4/92
Filed: 1934-08-31
Abstract: 438,285. Valve generating circuits. WILSON, J. C., and BAIRD TELEVISION, Ltd., 58, Victoria Street, Westminster. Aug. 31, 1934, No. 25119. [Class 40 (v)] In order to vary the amplitude without affecting the frequency of a sawtoothed oscillation generator, an inductance 7 is included in the anode circuit of the oscillator 5 and is variably coupled with an inductance 4 in the charging circuit 1, 3, of the condenser 2, so that the induced voltage is added algebraically to the normal output of the valve-oscillator. The resulting voltages are applied to the electrodes 6 of a cathoderay tube.
Patent GB-1010943-A (GB)
Title: Improvements in or relating to thermal insulation
Inventor: ARMSTRONG EDWARD
IPC: G21C11/08
Filed: 1961-07-12
Abstract: 1,010,943. Reactors. DARCHEM ENGINEERING Ltd. July 12, 1962 [July 12, 1961], No. 25202/61. Heading G6C. [Also in Division F2] An insulating pack for the interior of a nuclear reactor pressure vessel comprises individual substantially flat metal foils 1, 2, 3 held apart by elongated dimples 4, 5 formed in each foil and arranged in such a pattern that it is impossible to draw a straight line across a foil without passing through a dimple. The dimples, of semi-circular cross-section, are press-formed in the same direction relatively to the original plane of each foil. The dimple pattern is the same for each foil, and to avoid nesting the foils are arranged so that the pattern of one foil is orientated at 45 degrees from the pattern of adjacent foils.
Patent GB-1333850-A (GB)
Title: Drift monitoring apparatus for ionisation chambers
IPC: H01J47/02
Filed: 1971-04-19
Abstract: 1333850 Monitoring drift in ionization chambers COMMISSARIAT A L'ENERGIE ATOMIQUE 19 April 1971 [26 March 1970] 25300/71 Heading G1A To check for any drift in a measuring ionization chamber 2 there is provided in parallel therewith a reference chamber 1 incorporating a radio-active source of long half-life and low penetration, a switching device 4 being arranged between the monitor and an electro-meter assembly 3. By connecting the two chambers in parallel - upper switch position - the insulation of the measuring electrodes 7 and the electro-meter assembly, whose output is presented on a recorder 6, can be tested simultaneously. In the lower switch position the chamber 2 can be used for measuring purposes. The two chambers may be linked to have a common atmosphere Fig. 2 (not shown) or may share a common housing Fig. 3 (not shown). In these embodiments the radio-active source is arranged so that its radiation cannot emerge from the HT electrode of the monitor and hence introduce background noise into the measuring chamber.  The radio-active source in the monitor may be provided by covering its HT electrode (II) with a C14 #-emitter (12) Fig. 5 (not shown). Alternatively, the #-source may be an electrolytic deposit (26) of Am241 on a stainless steel support Fig. 7 (not shown).
Patent GB-449126-A (GB)
Title: Improvements in and relating to electric discharge devices
IPC: H01J5/40
Filed: 1935-09-13
Abstract: 449,126. Making electric discharge devices. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. Sept. 13, 1935, No. 25460. Convention date, Sept. 13, 1934. [Classes 83 (ii) and 83 (iv)] [See also Group XL] Pipe-end closing ; soldering.- An electric discharge device comprises a metal anode 1 formed integrally with the end plate from sheet metal by deep-drawing and closed by a flanged metal header 3 which is welded to the anode 1 by electrodes which travel around the edge, forming a line or stitch weld. Alternatively, the electrodes may be stationary and the device rotated. A metal evacuating tube 16 is welded, soldered or brazed through the header 3. Soldering may be effected by dropping a ring of solder over the tube, and heating in a hydrogen furnace. Eyelets 13 may be similarly secured, or, preferably, by welding. After evacuation the tube 16 is compressed between electrodal jaws which at the same time weld the collapsed walls together. The tube may alternatively be sealed by dipping in liquid solder to leave an excess of solder within the tube, forming a constriction by pliers having rounded inserts in the jaws, and applying and gradually lowering a flame to fuse the solder. More than one constriction may be employed.
Patent GB-281059-A (GB)
Title: Improvements in grain and like screens
IPC: A01F12/44
Filed: 1926-10-13
Abstract: 281,059. Rainforth & Sons, Ltd., W., and Rainforth, H. S. Oct. 13, 1926. Rotary sieves. - In grain screens of the type in which a series of rings or the convolutions of a helically coiled wire a, Fig. 1, are attached to the convolutions of springs m disposed on tie rods i connecting the end carrier rings b, c, and means are provided for closing up or extending the screening spacee, the springs m are positively anchored to the tie rods at the feed end by means independent of the corresponding carrier ring, and the tie rods are threaded into the feed end ring and burred over so as to avoid projections. The anchoring means for the springs m are shown in Fig. 7 and comprise a shoulder or boss n secured to the tie rod and a loose washer or plate o with a flat p which allows it to be inserted between two convolutions of the spring. The plate is held by the spring against the stop n when the end j of the rod is screwed into the carrier ring b. The screen to which the invention is applied comprises the fixed ring b, a plate l between which and the ring b the rods i extend, and a longitudinally adjustable ring c to which the springs m may be secured in any suitable manner. All the parts are mounted on a shaft d which is tubular for a part or the whole of its length, and the ring c is adjusted by a screw-threaded shaft g engaging a nut attached to the boss f which carries the ring c.
Patent GB-160482-A (GB)
Title: Process for the treatment of wood or other substances containing cellulose for the purpose of obtaining cellulose and artificial resin, asphalt, lac and the like
IPC: C08L61/10
Filed: 1919-10-17
Abstract: The resinous product obtained in the extraction of cellulose from wood, wood waste, paper waste, grasses, &c. by heating with phenols and a catalyst such as hydrochloric acid, is used in the preparation of marine glue and sizes.ALSO:Cellulose is obtained from wood, wood waste, paper waste, grass, &c. with the simultaneous production of artificial resin, lac, asphalt, &c., by heating with phenols or with substances of a phenol-like character in the presence of a small proportion of a catalyst such as hydrochloric acid.  The raw cellulose, for example, in the form of small pieces of wood, is heated with molten phenol, with or without a diluent such as water, alcohol, or benzol, and when sufficiently opened up, the cellulose is separated, excess of phenol recovered from the separated liquid, and the resin or lac finally isolated.  The product obtained is a substitute for natural resins, pitch, asphalt, and lac, and may be used in the preparation of marine glue, sealing-wax, varnishes, and size.  A prior process for condensing phenols with furfural is mentioned.
Patent GB-1069884-A (GB)
Title: Chain wheel with open-link chain
IPC: F16H55/30
Filed: 1964-06-19
Abstract: 1,069,884. Chain gearing. STAMICARBON N.V. June 19, 1964 [June 19, 1963], No. 25548/64. Heading F2Q. In a chain and chain wheel mechanism of the type in which an open link chain passes over a chain wheel 3 with alternate links C1, C2, parallel with the axis of the wheel and the intermediate links standing perpendicular to the axis, the chain wheel teeth being each bifurcated to provide a groove for receiving the intermediate links, the pitch of the chain wheel is below the minimum effective pitch of the chain, prior to any alteration of the chain dimensions by wear. Thus tooth 3<SP>1</SP> takes up the load by bearing against link C1 as it arrives at the wheel, and the load on preceding tooth 3<SP>2</SP> is gradually released. The pitch of the chain wheel is not more than 3% less than the mean of the larger dimensions of the link openings.
Patent GB-721454-A (GB)
Title: Improved process and apparatus for the fractional distillation of organic material subject to decomposition on distillation at normal pressure
Inventor: POTTS RALPH HARRISON
IPC: B01D3/14
Filed: 1951-11-01
Abstract: <PICT:0721454/III/1> In the distillation of decomposable organic materials in a series of zones in cascade, with the aid of steam in at least two consecutive zones, the vapours from one steam distillation zone are partially condensed and the uncondensed steam and entrained material returned to the previous zone while undistilled residue is forwarded to the following zone.  Decomposable materials specified are fatty acids and their esters, alcohols, nitriles and amines and tall oil acids.  A fatty acid mixture comprising mainly palmitic and oleic acids is fed via line 10 into a tower 1 maintained under reduced pressure and from which odiferous vapours are removed via condenser 14 whilst the bottoms are fed via line 11 into a tower 2 separated from a tower 3 by an imperforate plate 13.  Vapours from tower 2 comprising mainly palmitic acid are condensed in a condenser 24 which communicates with a steam ejector pump 27, the steam from which, together with entrained vapours from the condenser 24, passes over heating coils 30 into the tower 1.  The bottoms from tower 2 are fed into tower 3, the tarry bottoms from the latter being removed.  Vapours from tower 3, comprising mainly oleic acid, are condensed in a condenser 40 which communicates with two steam ejectors 44 and 46, the steam from which, together with entrained vapours from the condenser 40, passes over the steam coil 48 into the column 2.
Patent GB-407355-A (GB)
Title: Improvements in the manufacture of cellulose esters
IPC: C08B3/00
Filed: 1932-09-15
Abstract: In a process of acylating cellulose which comprises pretreating cellulose with a fatty acid or mixture of fatty acids, instead of excess of fatty acid as described in Specification 351,118, a relatively large amount, that is, at least six or seven times the weight of the cellulose of a chlorinated hydrocarbon excepting chloroform and carbon tetrachloride, and acting as a solvent for the esters in presence of the acid is employed in the pretreatment.  The acid is present in an amount substantially sufficient for the complete reaction, and the acylating agent is subsequently added without removal of the solvent.  Preferably the amount of chlorinated hydrocarbon, for example, ethylene chloride, which is present in the pretreatment bath, is that required for the esterification, although additional amounts may be added if desired.  Other suitable chlorinated hydrocarbons are methylene chloride, dichlorethylene, trichlorethylene, propylene chloride, and tetrachlorethane.  The catalyst, such as sulphuric acid, may be added to the pretreatment mixture or to the anhydride used in the esterification, or may be present in one of the reagents used.  In examples: (1) 25 lb. cotton are treated with 25 lb. glacial acetic acid and 175 lb. ethylene chloride for 4 hours at 100 DEG  F; after cooling to 60 DEG  F, 75 lb. acetic anhydride of 85 per cent strength containing \ba1/2\be lb. sulphuric acid are added, and the temperature allowed to rise to 100 DEG  C., the solution may be precipitated at a temperature above the boiling point of ethylene chloride; (2) 50 grammes cotton containing 5 per cent of water are pretreated with a mixture of 300 gr. ethylene chloride, 40 gr. propionic acid and 10 gr. acetic acid at 150 DEG  C. for 4 hours and then esterified at 60--100 DEG  F. by addition of 150 gr. acetic anhydride and 0.5 cc. sulphuric acid; (3) the process is carried out as in (2) but with the substitution of butyric for propionic acid, an acetate-butyrate being obtained. Specification 349,959 also is referred to.
Patent GB-518781-A (GB)
Title: Improvements in or relating to the production of hydroxyketones of the cyclopentanopolyhydrophenanthrene series
IPC: C07J75/00
Filed: 1938-09-02
Abstract: 518,781. Hormones. NAAMLOOZE VENNOOTSCHAP ORGANON. Sept. 2, 1938, Nos. 25758 and 25759. Convention dates, Sept. 3, 1937, and Jan. 29, 1938. [Class 2 (iii)] Hydroxyketones of the cyclopentanodimethylpolyhydrophenanthrene series and their derivatives in which the hydroxyl group is substituted are prepared by subjecting pinacone compounds containing at least two secondary alcohol groups and derived from cyclopentanopolyhydrophenanthrene, to an oxidation process, with protection if necessary of the nuclear double bonds and the non-tertiary hydroxyl groups. The ketones may be formed from pinacones by oxidizing with chromic oxide or lead tetracetate. Thus, #4,5-androstenedione-3,17 is dissolved in a mixture of ethanol and ether. Sodium amalgam is slowly added and the mixture diluted with water. The ethereal layer is concentrated and pinacone separates out. This crude pinacone is boiled with aluminium isopropylate and propanol to reduce any unreduced keto groups to secondary alcohol groups. The pinacone so obtained is dissolved in methanol and allowed to stand for some days with lead tetracetate. After addition of water and filtration, the solution is evaporated to dryness and the residue distilled under a high vacuum to give #4,5-androstene-one-3-o1-17. In another example, the pinacone is dissolved in pyridine and treated with acetic anhydride to give #4,5-androstene-one-3-acetoxy-17.
Patent GB-151981-A (GB)
Title: Improvements in alloys
IPC: C22C38/34
Filed: 1920-09-07
Abstract: 151,981. Cyclops Steel Co., (Assignees of Evans, C. T.). Oct. 3, 1919, [Convention date]. Alloys.-A steel alloy having corrosion-resisting properties comprises iron of low carbon content, silicon, zirconium or other metal of the carbon group, and about 3-7 per cent of chromium, the percentage of silicon and zirconium together being preferably about 2. In some cases, nickel, manganese, and copper may be added, the percentage of nickel being about 5-20, and the copper about 0.3. According to the Specification as open to inspection under Sect. 91 (3) (a) the presence of chromium is not essential. This subject-matter does not appear in the Specification as accepted.
Patent GB-812108-A (GB)
Title: Improvements in boiler level alarms
Inventor: MANNING FREDERICK ARTHUR
IPC: G01F23/24
Filed: 1957-08-15
Abstract: 812,108. Indicating liquid levels. GORDON & CO. Ltd., J. Aug. 15, 1957, No. 25831/57. Class 123(1) A remote boiler level indicator of the kind described in Specifications 335,795 (Class 123(i) and 605,796 which comprises a U-tube having legs connected respectively to the steam and water space of a boiler and containing an indicating fluid in its lower part, is adapted to give high and low level alarms by providing for electrical alarm circuits to be completed when the indicating fluid in either leg falls below a preset level. As shown, the U-tube has limbs 3, 5 connected respectively to the steam and water spaces of a boiler drum 1. The limbs incorporate dirt traps 6, 7 and the lower part off the "U" is filled with an indicating liquid which is heavier than water and electrically non-conducting. A visual indication of the boiler water level is given at a sight glass 8. Identical metal probes 9, 10 extend upwardly into the indicating liquid in the limbs 3, 5 respectively, the probe consisting of a rod 10, Fig. 2, carried in an insulator 11 sealed in a tubular holder 12, 13 passing through a gland 16, 17, 18 into an internally threaded extension 15 of the leg 5. The upper part of the holder is threaded so that the height of the probe may be adjusted with the indicator under pressure. The probe is connected through a terminal 19 to an alarm circuit the other side of which is connected to a metal part of the U-tube leg. The probe heights are adjusted to give the necessary electrical contact through water when the drop in the level of indicating liquid, representing a dangerously high or low boiler water level, is reached.
Patent GB-970300-A (GB)
Title: Improvements in material handling scraper machines
IPC: E02F9/20
Filed: 1962-07-06
Abstract: 970,300. Toothed gearing. ATLAS COPCO A.B. July 6, 1962 [July 18, 1961], No. 25973/62. Heading F2Q. [Also in Divisions B8 and E1] A drum 10 is driven from a rotor 28 through gearing comprising a shaft 34 splined at 33 to the rotor 28 and rotatably journalled in a gear ring 35 secured to the stator casing 27 and in a gear ring 36 bolted to a flange 37 of the drum 10. The gear rings 35, 36 mesh with a cylindrical externally toothed gear 38 and form a reduction gearing. Since only one gear 38 is provided a counter weight 39 is formed on the shaft 34.
Patent GB-742557-A (GB)
Title: Light-sensitive material for photomechanical reproduction and process for the production of images
IPC: G03F7/022
Filed: 1953-09-21
Abstract: Acylated hydrazines, and the hydrazones of aldehydes and ketones, are reacted with ortho quinone diazide sulphonic chlorides to produce compounds as follows:  N - benzoyl - N1 - [naphthoquinone - (1,2)-diazide - (2) - 5 - sulphonyl] - hydrazine (decomposes at 210 DEG  C.) (Example 1) made by reacting benzhydrazide with naphthaquinone-(1,2)-diacide-(2)-5-sulphochloride in dioxane in presence of pyridine, adding alkaline water and then acidifying.  N - a  - naphthoyl - N1 - [naphthoquinone-(1,2) - diazide - (2) - 5 - sulphonyl] - hydrazine (decomposes at 40 DEG  C.) made similarly using a -naphthoic acid-hydrazide in place of benzhydrazide.  N - (p - toluene sulphonyl) - N1 - [naphthoquinone - (1,2) - diazide - (2) - 5 - sulphonyl]-hydrazine (decomposes at 135 DEG  C.) (Example 2) made similarly using p-toluene sulphonyl hydrazide. b -Naphthalene sulphonyl hydrazide produces the corresponding b -naphthalene compound.  Benzophenone - N - [naphthoquinone - (1,2)-diazide - (2) - 5 - sulphonyl] - hydrazone (decomposes above 90 DEG  C.) (Example 3) made analogously using benzo-phenone hydrazone.  The corresponding phenyl ethylene, methyl phenyl ethylene and cyclohexanone hydrazones (Example 9) may be made similarly.  Benzophenone - N - [naphthoquinone - (1,2)-diazide - (2) - 4 - sulphonyl] - hydrazone (Example 4) is made as in Example 3, using the 4-sulphochloride. N,N1 - bis - [naphthoquinone - (1,2) - diazide-(2) - 5 - sulphonyl] - hydrazine (Example 5) is made similarly, using hydrazine hydrate.  N - [naphthoquinone - (1,2) - diazide - (2) - 5-sulphonyl] - N1 - (phenanthrene - 3 - sulphonyl)-hydrazine (Example 6) is made in an analogous way.  N - benzoyl - N1 - methyl - [naphthoquinone-(1,2) - diazide - (2) - 5 - sulphonyl] - hydrazine (Example 7) is made by action of dimethyl sulphate on the corresponding compound of Example 1.  N1 - [benzoquinone - (1,2) - diazide - (2) - 4-sulphonyl] - N,N - diphenyl hydrazine (Example 8) is made by deazotization of the product produced by action of caustic soda solution on the condensate of benzoxazolone-5-sulphochloride with asymmetrical diphenyl hydrazine.  N,N1 - bis - [naphthoquinone - (1,2) - diazide-(2) - 5 - sulphonyl] - N,N1 - dimethyl - hydrazine is made by condensing the corresponding naphthoquinone - diazide - sulphochloride with symmetrical dimethyl hydrazine.