baber/WOPTO huggingface dataset:
Patent GB-1473790-A (GB)
Title: Piezo-electric resonator assemblies
Inventor: MOREILLON RENE
IPC: H03H9/09
Filed: 1975-07-14
Abstract: 1473790 Mounting piezoelectric resonators SOC SUISSE POUR L'INDUSTRIE HORLOGERE SSIH MANAGEMENT SERVICES SA 14 July 1975 [20 Aug 1974] 29421/75 Heading H1E A piezoelectric longitudinal or flexural bar resonator is suspended by thin conductors in a housing made of laminar members. As shown, the housing comprises a face-to-face assembly of larger and smaller plates 5, 10 both having central rectangular apertures of unequal size affording a space within which is mounted the bar resonator 1. The space is eventually hermetically sealed by planar closure members (not shown) and encapsulation. Both plates are made of ceramic material and plate 5 bears two electrodes 14 separated by unmetallized areas 7. The external portions of the electrodes serve for attachment of conductive mounting posts (see Fig. 6, not shown). The bar 1 is mounted by means of thin conductors attached to the electrodes 14 and to a face of bar within a nodal zone.
Patent GB-823895-A (GB)
Title: Process for the purification of acetylene
IPC: C07C7/11
Filed: 1957-09-19
Abstract: Acetylene is separated from a gas stream containing it in low concentration and produced from a hydrocarbon by a process which comprises contacting the gas stream under pressure with a water-miscible solvent for acetylene in a quantity sufficient for the absorption of diacetylene and aromatic hydrocarbons; scrubbing the gas stream with more of the same solvent at a predetermined temperature and in a sufficient amount at that temperature to absorb the gases in the stream more soluble than acetylene; washing the scrubbed gas stream with sufficient additional amounts of the solvent to absorb the acetylene from the lesssoluble gases in the stream; stripping off substantially all the remaining portions of lesssoluble gases from the acetylene solvent mixture by rectification; and then recovering the acetylene by heating the mixture.  The solvent may be acetone, methyl ethyl ketone, butyro lactone, dimethylformamide or methanol.  In a preferred embodiment, the feed gas containing 7.7% of acetylene is compressed to 240 p.s.i.g. at 35 DEG  C. and is washed with acetone in a prescrubbing column in the proportion of 1.1. gallons of solvent per 1000 cu. ft. of gases.  This scrubbing removes all the diacetylene, benzene, cyclopentadiene, and much of the vinyl acetylene and methyl acetylene.  Pressure is lowered to 5 p.s.i.g. and the stream is cooled to - 20 DEG  to 30 DEG  C. and the gases scrubbed in a column using 3.0 gallons of acetone per 1000 cu. ft. of reaction gas.  About 40% of the acetylene becomes dissolved and this is recovered by throttling to a lower pressure and passing to a rectifying stripper where the column is heated to 90 DEG  C. and additional acetylene is introduced at the top of the column at 0 DEG C.  The gas is now contacted with 14.8 gallons of acetone per 1000 cu. ft. in an acetylene absorber column, the acetone being at - 22 DEG  C. and the column being operated at 200 p.s.i.g.  The mixture is warmed to 25 DEG  C. and fed to a vent column and the evolved gases treated with an additional 13.5 gallons per 1000 cu. ft. to wash out acetylene which is recovered by heating in an acetylene still, the acetone being condensed and returned to storage.
Patent GB-1384516-A (GB)
Title: Process for producing powdery hydrophilic fillers
IPC: C08F220/00
Filed: 1973-06-21
Abstract: 1384516 Production of powdery hydrophilic polymers CESKOSLOVENSKA AKADEMIE VED 21 June 1973 [26 June 1972] 29549/73 Heading C3P A process for producing a powdery hydrophilic filler material comprises copolymerizing a monomer containing carboxylic groups or groups which can be readily converted into carboxylic groups at a concentration of 5-60 wt. per cent, with 0À1 to 40 wt. per cent (based on the monomers), of a cross-linking monomer containing more than one vinyl or vinylidene group, in a solvent or a mixture of solvents which do not dissolve the formed copolymer and from which the polymer precipitates with a particle size below 100 Ám, and then converting the polymer into the sodium potassium or ammonium salt form. Examples of the carboxylic monomer are acrylic acid, methacrylic acid, fumaric acid, maleic acid, anhydrides and acid chlorides thereof, and mixtures of the above. Examples of the cross-linking monomer are divinylbenzene, ethylene glycol dimethacrylate and diethyl glycol dimethacrylate. The conversion into the salt form may be effected directly in the polymerization solvent after polymerization, after the polymer has been isolated, or in a solvent or mixture of solvents which dissolve the monomers but not the polymer. Reagents for forming the sodium, potassium or ammonium salt may be an aqueous or alcoholic solution of the appropriate hydroxide, hydrogen carbonate or alcoholate. In the examples, the indicated monomers are polymerized in the indicated solvents and converted to salts; (1) ethylene glycol dimethacrylate (EGDM) and methacrylic or acrylic acid in toluene; (2) maleic anhydride and divinyl benzene in methyl ethyl ketone; (3) methacrylic acid maleic anhydride and divinyl benzene in cyclopentanone; (4) methacrylic acid and EGDM in propanol and (5) maleic acid and EGDM in butanol.
Patent GB-1142991-A (GB)
Title: Improvements in and relating to the production of organic isocyanates
Inventor: WRIGHT DONALD
IPC: C07C263/02
Filed: 1966-07-01
Abstract: 1,142,991. Production of organic isocyanates. IMPERIAL CHEMICAL INDUSTRIES Ltd. 20 Sept., 1967 [1 July, 1966], No. 29607/66. Heading C2C. Aliphatic or cycloaliphatic isocyanates are obtained by reacting an aliphatic or cycloaliphatic hydrocarbon or substituted hydrocarbon containing at least one olefinic double bond, in which at least one of the carbon atoms linked by the double bond has at least one hydrogen atom attached to it, with isocyanate ions under substantially anhydrous conditions in the presence of a salt or co-ordination compound of palladium or platinum. The reaction may be effected at 50-150‹ C. in excess of the starting material as solvent or an inert solvent, e.g. sulpholane or dimethyl acetamide, may be present. The starting material may be a mono- or poly-olefinic compound and the isocyanate ions may be introduced to the reaction in the form of a suitable salt, e.g. the alkali and alkaline earth metal cyanates The palladium or platinum derivatives employed may be the halides, complex salts such as lithium chloropalladite and lithium chloroplatinite, or complexes with organic compounds such as dibenzonitrile palladous chloride. The reaction is preferably effected in the presence of a redox system which is preferably inorganic, e.g. iron and copper salts may be used, and the redox system may be regenerated after reaction by contacting with molecular oxygen or a molecular oxygen-containing gas. A source of hydrogen ions, e.g. HCl, may be incorporated in the reaction mixture and the reaction may be effected homogeneously, or heterogeneously by agitating the reactants with a solid derivative of palladium or platinum deposited on a support. A specific example describes the preparation of octyl isocyanate.
Patent GB-1319879-A (GB)
Title: Illuminated glass fibre optics
IPC: C03B37/15
Filed: 1971-06-24
Abstract: 1319879 Glass fibre optical bundles AMERICAN OPTICAL CORP 24 June 1971 [25 June 1970] 29642/71 Heading C1M [Also in Division G2] An illuminated glass fibre optic device is formed from a coherent bundle of image transmitting optical glass fibres 10, with the fibres at the two ends 12, 14 in identical geometrical patterns, by fusing the bundle together with a silica-free matrix glass, removing a section of the lengths of a number of outermost fibres 16 adjacent one end, 12, covering the ends of the remaining fibres 17 at the end 12 and the entire opposite end 14 with an acid resistant coating 18, 20 and leaching the silica-free matrix glass between the coatings 18, 20 so that the fibres 10a, 16a are free to flex independently and grouping the free ends of the fibres 16a together at one side of the bundle so that they can receive light, as from bulb 28, to provide illumination at the opposite end 14 of the bundle, as on an object A to be viewed by an eye 25 at the end 12. The silica-free glass, preferably a B-Ba-La glass, may be dissolved out by hydrochloric acid and there is no granular silicate residue to abrade the fibres. The coherent bundle may be in a circular cross-section as shown, or rectangular, in which case the outermost fibres cut off may extend along only two sides or along the corners of the bundle. USA Specification 3,004,368 is referred to.
Patent GB-1080867-A (GB)
Title: A process for the preparation of carboxylic acids and derivatives thereof
Inventor: MEDEMA DIRK
IPC: C07C51/56
Filed: 1963-07-26
Abstract: Carboxylic acids, halides, anhydrides or esters thereof are prepared by reacting an olefin, optionally substituted by halogen, alkoxy or ester groups, with carbon monoxide in a substantially non-aqueous liquid medium and in the presence of a halide or p -complex of palladium, rhodium or ruthenium, said p -complex being derived from the halide of the metal and the olefin reactant, and optionally hydrolysing the resultant halide, anhydride or ester to the corresponding acid. Numerous olefin starting materials are specified, a preferred class being those containing allyl groups.  In general, the reaction yields acid halides and anhydrides, but if the olefin reactant contains an ether linkage the initial product is an ester. The reaction product may contain halogen substituents orginating from the metal halide catalyst.  The p -complex may be formed in situ from the metal halide and olefin reactant.  The catalyst can be used to stoichiometric or greater quantities, but may also be employed in small amounts in combination with an oxidizing agent, e.g. HCl, O2, combined with a redox system, e.g. copper chloride, in order to regenerate any precious metal which is reduced.  The reaction rate may be enhanced by the addition of other metal compounds, e.g. the carboxylates of alkali and alkaline earth metals, Cu, Fe, Al, Ba, Zn and Cd.  Also alkali and/or alkaline earth metal halides may be used to increase the polarity of the reaction medium.  A large number of substances are specified as suitable reaction media.  The reaction may be effected within wide ranges of temperature and pressure, e.g. -80 DEG  to 800 DEG  C., 0.1 to 250 atmos.  The carbon monoxide may be diluted with an inert gas, e.g. N2, CH4.  Examples describe the preparation of acrylic acid, b -chloropropionic acid, 4,4,4-trichlorobutyric, b -chlorobutyric acid, b -dichloropropionic acid, b -chloroacrylic acid, vinylacetic acid, isopropenyl acetic acid, 3-pentenic acid, acetic anhydride, vinylacetic anhydride, 3-cyclohexene carboxylic acid and 3-cyclooctene carboxylic acid chloride.  The p -complexes of Pd, Rh and Ru may be prepared in situ by reaction between the Pd, Rh or Ru chlorides and the olefin reactant. Alternatively, the complexes may be made in a separate step by reaction of the olefinic compound and a compound of the precious metal or the activated metal itself.  Specified complexes are bis-(p -allylpalladium chloride), bis - (p  - allylpalladium bromide), acetylacetonato - (allyl) palladium, bis - (p  - isobutenylpalladium chloride), bis-(p -crotylpalladium chloride), bis - (p  - crotylpalladium bromide), bis - (p  - cyclohexenylpalladium chloride), bis - (p  - 4 - chlorocrotylpalladium chloride), bis - (p - 2 - methyl - 4 - chlorocrotylpalladium chloride), p  - allylcarbonylpalladium chloride, p  - isobutenylcarbonylpalladium chloride, ethylenepalladium chloride and ethylenerhodium chloride.
Patent GB-355562-A (GB)
Title: Fastening for bracelets, watch wristlets and the like
IPC: A44C5/22
Filed: 1930-10-06
Abstract: 355,562. Fastenings for bracelets &c. BURKHARDT, E., 2, Luisenplatz, Pforzheim, Germany. Oct. 6, 1930, No. 29826. [Class 43.] In fastenings for bracelets, watch wristlets and the like wherein a slide b is carried by a band a or one portion thereof, and means are provided for fastening the free end a<1> of the band, or the free end of the other portion of the band to a slot b<1> of the slide b, hooks c<2>, d<2> are carried by the free end a<1> and in fastening position engage under short edges of the slide slot b<1> and can be disengaged therefrom by shifting one or both hooks c<2>, d<2> in opposition to the action of a spring e. The band end a<1> may form a loop a<2>, Fig. 6, with the band a, or may form a part of a separate band. The hooks c<2>, d<2>, and spring e are mounted in a guide c carried by the guide end a<1>; the hook c<2> may be stationary and mounted on the guide c, or movable with the hook d<2> which is provided with a lateral button d<1> to facilitate shifting. The mouths of the hooks are wider towards the outer side, and are thus pulled wedge-like into the slot b<1> and press on the band a to prevent shifting of the slide b on the band. The guide c may be tubular or platelike and hollow. Milanese fabric or other material may be used for the band.
Patent GB-335381-A (GB)
Title: An improved device for projecting sand into moulds
IPC: B22C15/20
Filed: 1929-10-02
Abstract: 335,381. Grocholl, K., and Weber, H. Oct. 5, 1928, [Convention date]. Moulding-machines.-The velocity of projection of a centrifugal sand-projecting machine is varied by feeding the sand to blades d of the rotor c at different distances from the discharge opening p. The sand is fed by a funnel j to a circular chamber i in which rotate blades e carried by the rotor' c. The 'chamber has an opening q and can be circularly adjusted by a toothed annulus f engaged by a pinion rotated by a hand wheel h. The casing a has handles n and a renewable portion b and is suspended by a ball joint m or a sliding support.
Patent GB-671039-A (GB)
Title: Improvements in and relating to thermostatically operated electric switches
IPC: H01H37/66
Filed: 1949-12-19
Abstract: 671,039. Thermal switches. GOLDSTAUB, H. H. Dec. 19,1949. No. 29919/48. Class 38 (v). A bimetal strip c carries a contact d which is normally held magnetically in engagement with a permanent bar magnet b forming the fixed contact, but is opened when the bending stress of strip c overcomes the magnetic force. The magnet is adjustable in the direction of the arrows e<SP>1</SP> and the strip c may be adjusted by a screw e.
Patent GB-1011102-A (GB)
Title: Working cylinder for air-cooled internal combustion engines
IPC: F02F1/08
Filed: 1962-08-03
Abstract: 1,011,102. Air-cooled cylinders. KLOCKNER HUMBOLDT-DEUTZ A.G. Aug. 3, 1962 [Aug. 4, 1961], No. 29940/62. Heading FIB. In an air cooled cylinder having a cast iron liner 1 and a light metal jacket 2 carrying the cooling fins 3 which are provided with flats or recesses 4 to reduce their width in the parts facing adjacent cylinders, the ratio of the effective thickness of the jacket 2 to the liner 1 is increased in the region of the flats 4 to avoid unequal radial expansion. In Fig. 2 the lever 1 is reduced in thickness and the wall 2 increased in thickness adjacent the flats 4; alternatively the lever 1 may be of constant thickness and the wall 2 thickened. In Fig. 4 the liner wall 6 is provided with indentations 9 into which ribs on the jacket wall 10 project.
Patent GB-860380-A (GB)
Title: Improvements in or relating to halogenated oxathianes and oxathienes
IPC: C08K5/45
Filed: 1959-09-02
Abstract: The invention comprises compounds of the general formula <FORM:0860380/IV (b)/1> wherein X is halogen, R1 is alkyl, R2 is aryl, R3 is alkaryl, R4 is aralkyl, n is a number from 1 to 8 inclusive and w, x, y and z are numbers from 0 to 7 inclusive, any free bonds being satisfied by hydrogen, the preparation thereof by appropriate halogenations or dehydrohalogenations, and biologically-active compositions containing the products.ALSO:Fungicidal, nematocidal, insecticidal and bactericidal compositions contain as active ingredient compounds of the formula <FORM:0860380/VI/1> wherein X is halogen, R1 is alkyl, R2 is aryl, R3 is alkaryl, R4 is aralkyl, n is a number from 1 to 8 inclusive and w, x, y and z are numbers from 0 to 7 inclusive, any free bonds being satisfied by hydrogen, together with a carrier, and may be utilized in diverse formulations both liquid and solid.
Patent GB-231129-A (GB)
IPC: B29C63/02
Filed: 1924-12-13
Abstract: 231,129. Ochschim, R. March 22, 1924, [Convention date]. Drawings to Specification. Ornamenting.-Surfaces of wood are given a highly polished surface by uniting them with a sheet of zellon (acetyl-cellulose) by pressure, with or without heat. The zellon may be coloured if desired. The wood surface is ground and coated with a solution of zellon. The zellon sheet is then pressed on by a hollow pressure plate having a polished pressure surface. The pressure plate may be heated by passing steam, hot water or air &c. through it, and may finally be cooled by cold water to facilitate its removal.
Patent GB-747199-A (GB)
Title: Improvements in and relating to machines for making adhesive tape and like materials
IPC: B05C1/16
Filed: 1953-10-30
Abstract: 747,199. Coating webs. SCHOLL MANUFACTURING CO., Ltd. Oct. 30, 1953 [Dec. 18, 1952], No. 30083/53. Class 140. A web or tape 5 to be coated with adhesive is fed between a backing roll 14 and an apertured adhesive-applying roll 15, adhesive being fed through the apertures from a V-shaped hopper 24 having an elongated outlet slot. Adhesive is supplied to the hopper from a stationary pipe 27 having several discharge nozzles 28. The backing roll may have a resilient rubber covering 16. The adhesiveapplying roller may be of thin material and may be cleaned by a rotary brush 32 contacting an endless wick 36 dipping in cleaning material or solvent 39 and rotated by contact with the brush. The coated tape is dried in an oven with infra-red lamps and an exhaust fan.
Patent GB-1155855-A (GB)
Title: A Truck, Lorry Or Van With Means Facilitating Loading And Unloading
Inventor: PIQUE ANTONIO POMA
IPC: B60P1/38
Filed: 1966-07-05
Abstract: 1,155,855. Loading vehicles. A. P. PIQUE, and A. B. PIQUE. 5 July, 1966 [12 July, 1965], No. 30086/66. Heading B8E. The load-carrying floor of a vehicle comprises an endless belt 1 which passes round rollers 2 and over supporting members 3 which extend between the sides of the vehicle. The rollers 2 are driven from the vehicle gear-box 4 by shafts 7, 8 and worms 6 in either the loading or unloading direction. Alternatively, Fig. 3, the rollers 2 may be connected by a chain 9 and driven by bevel gears 11, 12 and a chain 10. The belt 1 may be of flexible sheet steel.
Patent GB-1496911-A (GB)
Title: Method of vacuum-sealing each of the first ends of a number of hollow transport means terminating in a header and a method of detecting leaks
IPC: F22B37/42
Filed: 1975-07-17
Abstract: 1496911 Vacuum-sealing ends of pipes NERATOOM BV 17 July 1975 [22 July 1974] 30106/75 Heading F2P A method of vacuum-sealing each of the first ends of a number of hollow transport means terminating in a header, characterized in that the header and/or the transport means are partially filled with a sealing material which is introduced into the header in liquid condition and subsequently converted into the solid condition. The figure shows pipes 1 having first ends in first header 4 and second end 3 in second header 5. The pipes run through the sodium compartment of a steam generator. When a leak is to be detected, the water supply is cut-off, the pipes and the sodium compartment are emptied and the pipes are refilled with an inert gas which differs from the detection gas to prevent a reaction at the leak spot between sodium residues and oxygen. Header 5 is separated from the steam line and the ends 3 are sealed for example with rubber. The first ends 2 are then vacuum-sealed. Each end 3 is then connected one by one to detector sensitive to detection gas and a pump, while detection gas, e.g. helium, is introduced into the empty sodium compartment. In the particular embodiment the sealing material is paraffin which becomes solid at ambient temperature. Paraffin is introduced into header 4 by means of a rubber balloon filled with heated and hence liquefied paraffin. The balloon is slid on to connection 6 and pressure on the balloon forces the paraffin into the header. Paraffin is prevented from flowing into the water supply by means of a valve or by means of a balloon 8 that can be introduced through connection 7 before being inflated. After the detection the header can be heated and the majority of the paraffin will liquefy and flow back into the balloon. Wax or Wood's alloy may be used instead of paraffin. The sealing material may be liquid at ambient temperature, in which case it is frozen or cured as applicable in situ.
Patent GB-783661-A (GB)
Title: Production of fatty alcohols
Filed: 1955-10-21
Abstract: An alcohol is produced from a lower alkyl ester of a higher aliphatic carboxylic acid, the alcohol having the same number of carbon atoms as the carboxylic acid, by a process comprising contacting the ester in the presence of at least 1 per cent, based upon the weight of the ester, of a copper-chromium oxide catalyst, at a pressure of 2000 to 4000 pounds per square inch at 550 DEG  to 625 DEG  F., with hydrogen containing 0.3 to 1.4 molar per cent of carbon monoxide, the molar ratio of hydrogen to the ester being in the range from 15 : 1 to 40 : 1.  The "lower alkyl esters" contain 1 to 4 carbon atoms in the alcohol residue of the ester and the "higher aliphatic carboxylic acids" contain from 6 to 22 carbon atoms in the molecule.  Suitable esters for use as starting materials are, for example, the methyl, ethyl, isopropyl and butyl esters of fatty acids derived from coconut oil, tallow, sperm oil, palm oil, palm kernel oil, soybean oil, and cottonseed oil.  In the examples: (a) the methyl esters of the mixture of fatty acids derived from coconut oil is continuously hydrogenated with hydrogen gas containing initially 1.1 molar per cent of carbon monoxide (subsequently dropping to 0.3 per cent), to give fatty alcohols having the same numbers of carbon atoms as the fatty acids; (b) the methyl esters of the mixture of fatty acids derived from tallow is continuously hydrogenated with hydrogen gas initially containing 1.1 molar per cent of carbon monoxide (subsequently dropping to 0.6 per cent) to give the corresponding alcohols; and (c) a mixture of the methyl esters of the fatty acids derived from coconut oil and from tallow is continuously hydrogenated with hydrogen gas initially containing 1.1 molar per cent of carbon monoxide (subsequently dropping to 0.3 per cent) to give the corresponding alcohols.