baber/WOPTO huggingface dataset:
Patent GB-1196538-A (GB)
Title: Copolymers of Tetrafluoroethylene
IPC: C08F214/26
Filed: 1968-10-30
Abstract: 1,196,538. Copolymerizing tetrafluoroethylene. E. I. DU PONT DE NEMOURS & CO. 30 Oct., 1968 [30 Oct., 1967], No. 51446/68. Heading C3P. Tetrafluoroethylene is copolymerized with one or more olefinically unsaturated monomers in the presence of a solvent by (a) forming a solution in 1,1,2-trichlorotrifluoroethane of tetrafluoroethylene and, as the monomer(s), one or more of a fluoro-olefin of the formula XCF 2 (CF 2 ) n CF=CF 2 , where X is F or H and n is zero or an integer from 1 to 9, a fluorovinyl ether of the formula XCF 2 (CF 2 ) n OCF = CF 2 . where X is F or H and n is zero or an integer from 1 to 7, a fluorovinyl polyether of the formula xCF 2 (CF 2 ) n OCF(CF 3 )CF 2 OCF = CF 2 , where X is F or H and n is zero or an integer from 1 to 7, perfluoro - 3,6 - dioxa - 4 - methyl - 7 - octene sulphonyl fluoride and perfluoro-(2-methylene- 4-methyl-l,3-dioxolane); (b) initiating the polymerization with a low temperature initiator soluble in the solution; (c) copolymerizing the tetrafluoroethylene and the monomer(s) in the solution at a temperature from 30 to 90 C. and at a pressure of from 2À1 to 71À4 kg./cm.<SP>2</SP>, and (d) separating from the resulting mixture the copolymer. By "low temperature" initiator is meant an initiator active in the range 45 to 80 C. which yields radicals resulting in stable end groups in the polymer chain and preferred ones are of the formula [X(CF 2 ) n CO.O] 2 , where X is H or F and n is 1 to 10. In the examples tetrafluoroethylene is copolymerized with perfluoropropyl perfluorovinyl ether, hexafluoropropylene, perfluoro - 3,6 - dioxa - 4 - methyl - 7-octane sulphonyl fluoride and perfluoro-(2 methylene-4-methyl-1,3-dioxolane) in the presence of 1,1,2-trichlorotrifluoroethane, bis-(perfluoropropionyl) peroxide, bis - (# - hydroperfluorovaleryl) peroxide, and bis-(3-hydroperfluoropropionyl) peroxide.
Patent GB-1527877-A (GB)
Title: Magnesium alloys
IPC: C22C23/00
Filed: 1975-12-17
Abstract: 1527877 Magnesium-silver alloy; heattreatment MAGNESIUM ELEKTRON Ltd 15 Dec 1976 [17 Dec 1975] 51612/75 Heading C7A An alloy contains in wt. %  Mg < 88 Ag 1À6 - 3À5 R.E. 0À1 - 2À3 Th 0 - 2À3 Y 0À1 - 2À5 Zn 0 - 0À5 Cd 0 - 1 Li 0 - 6 Ca 0 - 0À8 Ga 0 - 2 In 0 - 2 T1 0 - 5 Pb 0 - 1 Bi 0 - 1 Cu 0 - 0À15 Zr 0 - 1 Mn 0 - 2 The rare earth metals contain # 60% Nd, and preferably # 15% La and Ce, while the maximum contents of Mn and Zr are limited by their mutual solubility. R.E. metals and Th together do not exceed 3%, and when # 0À5% Y is present the minimum Th is defined as The alloy may be solution treated between 485C and the solidus, quenched and aged at 100 - 275C; when it contains >0À1% Cu it should be given a preliminary solution treatment at > 485C. The alloys are particulary useful in aerospace applications.
Patent GB-1532321-A (GB)
Title: Method of and apparatus for producing thread-like capillaries
IPC: B29C48/335
Filed: 1976-12-10
Abstract: 1532321 Drawing glass capillary tubes SANDWICH-PROFIL GmbH 10 Dec 1976 [12 Dec 1975] 51710/76 Heading C1M Thread-like capillary tubing of glass and/or silica and/or boron trioxide is produced by extruding a melt, under a pressure of at least 100,000 Pa, through a ring shaped aperture, introducing a filling gas under a pressure of 300-10,000 Pa into the tube being formed and drawing off the tube to the desired external diameter and wall thickness. The working material may be heated by infra-red radiation and the extrusion pressure may be raised by a gaseous overpressure and/or hydrostatic pressure of the melt.
Patent GB-1088679-A (GB)
Title: Improvements in or relating to electrical circuits
Inventor: AMES IRVING
IPC: H01L23/485
Filed: 1964-12-21
Abstract: 1,088,679. Semi-conductor device. INTERNATIONAL BUSINESS MACHINES CORPORATION. Dec. 21, 1964 [Dec. 26, 1963], No. 51834/64. Heading H1K. The connections to the electrodes of a semiconductor device are produced by depositing a first aluminium oxide layer on the substrate, depositing a conductive pattern, of a material having a similar coefficient-of expansion to that of silicon oxide, to make contact with the device, and depositing a second layer of aluminium oxide over the conductive pattern. As shown the electrodes of a transistor or diode 12 diffused into a silicon substrate 10 are contacted by depositing an aluminium oxide layer 14 over the entire surface except the contact regions, and depositing a contact strip 16 of tungsten or molybdenum over the layer A small region 22 of aluminium oxide is deposited across the first strip and a conductive strip 20 is deposited over this to form an insulated crossing. Both conductive strips are then protected with a further aluminium oxide layer 24. The end portion 18 of conductive strip 16 is left exposed to allow external connections to be made by soldering or by a pressure contact. The aluminium oxide layers may be produced by vapour deposition of aluminium in a high oxygen partial pressure, by thermal evaporation produced by electron bombardment heating of Al 2 O 3 , or by reactive sputtering of aluminium in an oxygen atmosphere. The conductive strips may be deposited by sputtering or thermal evaporation. Reference has been directed by the Comptroller to Specification 900,334.
Patent GB-1167148-A (GB)
Title: Apparatus for Use in the Distribution of Particulate Material.
Inventor: HEARN FREDERICK WILLIAM
IPC: B65G53/12
Filed: 1965-12-07
Abstract: 1,167,148. Pneumatic emptying of hoppers. METALAIR Ltd. 3 Nov., 1966 [7 Dec., 1965], No. 51854/65. Heading B8A. A tapering discharge unit at the base of a container 24 for particulate material comprises a conduit 30 having an outlet portion 32 closed by a butterfly valve 34 and tapering in an outward direction to the nozzle 50. A pipe 46, provided with a valve 52, connects the upper part of the container 24 with an annular Venturi chamber 48 surrounding the nozzle 50. The sloping base 36 of the container 24 is provided with a permeable sheet 38 for fluidizing gas from an inlet pipe 40. The container is fed with material from a hopper 10 via an intermediate chamber 16 and air-lock valves, an equalization pipe with a valve 51 being provided between the container 24 and the chamber 16.
Patent GB-518617-A (GB)
Abstract: 518,617. Cash registers. KOOPERATIVA FORBUNDET FORENING U.P.A. Aug. 24, 1938, No. 24904. Convention date, Aug. 31, 1937. [Class 106 (i)] Keyboard interlocks for machines having keys of several kinds each kind having a locking detent plate. The machine described is provided with a number of banks of amount keys and a single bank of transaction or clerk's keys. The invention consists in the provision of means to prevent the setting-up of an item until a transaction key has been depressed, and to prevent the depression of any key after the machine operation has begun. In the normal position of the parts shown, depression of amount keys is prevented by a bail 12 engaged within notches in the usual detent plates 3b associated with the amount banks. The bail 12 is carried by a member 6 rockable about a shaft 7 and provided with a pin 9 embraced by the slotted end of a locking plate 3a associated with the transaction bank. The arrangement is such that, upon the depression of a transaction key, the bail is rocked counterclockwise to free the amount keys. The locking plate and bail are retained in their displaced positions by a spring-urged latch 25 co-operating with a stud 23 on the rocking member. Depression of a second transaction key is prevented by the shape of the slots in the locking plate. The amount banks are of the flexible type and means are provided to prevent the depression of a key during the machine operation. This comprises a rod 16 carried by arms 14, rigid with the shaft 7 and adapted to enter recesses 28 in the detent plates 3b when the shaft rocks clockwise from position I to position II at the beginning of a machine operation. The keys are released towards the end of the operation by a counterclockwise rocking of shaft 7 from position II to position III, during which movement the rod 16 is removed from recesses 28, a rod 15 carried by the arms 14 positively restores the detent plates, a nose 29 of one arm 14 disables the latch 25, and a pawl 17 pivoted on the rod 15 wipes past a stud 24 of the rocking member 6 to swing it further counterclockwise and then release it to the action of a spring 11. The clockwise restoring movement of the rocking member 6 is retarded by cam-shaped edges of the rocking member against 'which it bears. If no transaction key has been depressed prior to a machine operation, a shoulder 34 of a spring- urged lever 22 enters a slot 33 in the locking plate 3a to prevent depression of a key during the operation. The lever 22 bears against one arm 14 and is consequently disabled during the counterclockwise rocking of shaft 7 at the end of the operation.
Patent GB-1528016-A (GB)
Title: Liquid dispensing nozzle assembly
IPC: B67D7/54
Filed: 1975-12-22
Abstract: 1528016 Liquid dispensing nozzles ATLANTIC RICHFIELD CO 22 Dec 1975 [26 Dec 1974 2 July 1975] 52371/75 Heading B8N A liquid dispensing nozzle has a flexible vapour collector 17 surrounding its spout 13 with a face seal 22 to engage the inlet of a liquid receiver, the face seal 22 being connected to a spring assembly 26, 27 at different points to allow rotation of the seal about an axis transverse to the axis of the spout. The spring assembly preferably comprises a pair of helical springs attached to a mounting heel 21 for the seal at diametrically opposed positions. The seal has a compressible cellular plastics material which may be coated 221 with leather or plastics. The vapour collector is a bellows attached to the nozzle housing 10. Latches (36), (37), Fig. 3 (not shown), are provided on the spout to retain it in the inlet (35) when dispensing.
Patent GB-1458757-A (GB)
Title: Wirting device for writing with liquid ink
IPC: B41J2/385
Filed: 1974-12-09
Abstract: 1458757 Selective printing PHILIPS ELECTRONIC AND ASSOCIATED INDUSTRIES Ltd 9 Dec 1974 [12 Dec 1973] 53134/74 Heading B6F A writing device comprises a beam 1 of piezoelectric material which bends in response to a signal applied to electrodes associated therewith, the beam carrying at its free end a capillary ink applying stylus 5. A plurality of beams may be provided each carrying a stylus (16, Figs. 3a-3c, not shown), the styli being positioned and shaped so that their ends are in a straight line. Ducts 3 along each beam 1 carry ink to the stylus, and further ducts may house electrodes for actuating the beam.
Patent GB-1526240-A (GB)
Title: Safety belts
IPC: B60R22/44
Filed: 1975-12-30
Abstract: 1526240 Safety belts AMERICAN SAFETY EQUIPMENT CORP 30 Dec 1975 [31 Oct 1975 26 Nov 1975] 53193/75 Heading A3V To prevent undue tensioning of a seat belt in normal use a pawl 20 and ratchet wheel 41 are provided to prevent reeling in of the belt beyond a certain point thus preventing undue pressure on the passenger during normal use. An arm 10 with belt engaging roller 13 is pivotally mounted and urged against the belt by a spring 12 the arm having a surface 11 which can act on a pin 24 on pawl 20 to lift it out of engagement with ratchet 41. A friction wheel 30 is mounted for limited rotation controlled by a pin 32 thereon moving in a slot 9 the wheel 30 having a cam surface 31 which acts on a pin 22 on pawl 20. In operation starting from a stored position of the belt initial protraction of the belt will cause arm 10 to move in a clockwise direction before the reel is rotated. The pawl 20 is held unlocked by surface 31 but as soon as the reel rotates the disc 30 rotates to allow latching of the pawl 20. When protraction ceases the pawl 20 latches into teeth 41 of wheel 40 and prevents further retraction and any slack in the belt is taken up by the spring biassed arm 10. If the slackness is too great the pawl 20 is released by arm 10 and a further rewinding takes place. In an emergency condition a pivotable weight 8 causes teeth 5 to engage in ratchet wheels 4, 4' thus locking the belt against unwinding. Several embodiments of tension relieving mechanisms are described.
Patent GB-1434828-A (GB)
Title: Fire-retardant polymeric material and mixture for use as fire-retardant
IPC: C08K5/3462
Filed: 1973-11-16
Abstract: 1434828 Foaming soft glass IMPERIAL CHEMICAL INDUSTRIES Ltd 28 Oct 1974 [16 Nov 1973] 53244/73 Heading C1M [Also in Division C3] A mixture comprises at least one inorganic oxide glass having a transformation temperature not more than 300 C., and at least one blowing agent which has the purine structure  or which is a substituted derivative thereof (e.g. adenine, guanine, adenosine or guanosine). Preferably the ratio blowing agent : glass is 2 : 1 to 1 : 6, by weight. The glass preferably has a transformation temperature of 120-180 C., and preferably consists of (mole per cent) 50-72 P 2 O 5 , 1À2-3À5 B 2 O 3 , 0-30 PbO, 0-5 transition metal oxide(s), and 10-30 of one or more oxides selected from alkali metal oxides, alkaline earth metal oxides and ZnO. The above mixture may be compounded with an organic thermosetting resin (preferably an unsaturated polyester) to form a fire retardant composite material. The composite material may comprise 3-10 wt. per cent of blowing agent and 5-30 wt. per cent of glass, both based on the weight of resin. Glass fibre reinforcement may also be present. Resins used in the examples are: (i) a copolymer consisting of 18 wt. per cent styrene, 13 wt. per cent methylmethacrylate and 69 wt. per cent of a polyester of maleic acid, phthalic acid and propylene glycol; and (ii) a copolymer consisting of 27 wt. per cent styrene and 73 wt. per cent of a polyester of maleic acid, chlorendic acid and propylene glycol.
Patent GB-1365135-A (GB)
Title: Fluid bed reactors
IPC: B01J8/44
Filed: 1971-11-17
Abstract: 1365135 Fluidized bed base plate INTERNATIONAL NICKEL CO OF CANADA Ltd 17 Nov 1971 [18 Nov 1970] 53387/71 Heading B1F [Also in Division F4]   A fluidized bed reactor has a grate 21 covered by refractory material 23 in which gas distribution nozzles are mounted, each nozzle comprising an inlet 27 merging into a chamber 31 and having an upper outlet 34 formed by a cylindrical recess bounded by a cylindrical wall 35 and a transverse wall 36 which closes the lower end of the recess. Passages 32 in the wall 35 from ports through which the fluidizing gas passes substantially horizontally from the chamber 31 into the outlet for vertical flow therethrough into the material to be treated. The total cross-section of passages 32 amounts to no more than 60% of that of the outlet so that the gas velocity therein is correspondingly greater. By this means particles from the bed are prevented from passing through into the inlet 27.
Patent GB-1195698-A (GB)
Title: Improvements in or relating to Straight Bar Knitting Machines
Inventor: BLOOD RAYMOND
IPC: D04B15/00
Filed: 1966-12-08
Abstract: 1,195,698. Knitting-machines. WILLIAM COTTON Ltd. 30 Nov., 1967 [8 Dec., 1966], No. 54905/66. Heading D1C. A rib transfer bar conveyor in a straight bar machine comprises a train of carriages 3, 4 driven round a track 14 by successive connection of the carriages to a drive. T the track extends across the front, back and one side of the machine, at which a loading station is located. The carriages are interconnected by links 26, and in one embodiment are driven by engagement of pegs 39a with a driven endless chain 64 whose lap is longer than the spacing of the nearest pegs or adjacent carriages. Alternatively the carriages may be driven by a linear induction motor.
Patent GB-1105617-A (GB)
Title: Improvements in or relating to lamps
Inventor: HEFFORD CHARLES GEORGE
IPC: F21V29/15
Filed: 1965-12-28
Abstract: 1,105,617. Vehicle lamps. STADIUM Ltd. 21 Dec., 1966 [28 Dec., 1965; 4 Feb., 1966], Nos. 54960/65 and 5034/66. Heading F4R. A lamp, especially a motor-vehicle lamp employing high power bulbs, comprises a body shell 10 enclosing a bulb 20 and closed in front by a cover glass 14, the shell having an inlet 24 at the lower end and an outlet at the top in the form of a tube 26 housed within a cowl member 27 closed at the top, front and sides so that a current of air for cooling the lamp is induced therethrough but ingress of water is prevented. The lamp has a parabolic reflector 17. To increase the cooling effect a circular plate having annular corrugations is mounted on the back of the reflector.
Patent GB-1094367-A (GB)
Title: Improvements in and relating to the working of transparent materials by laser beam
IPC: C03B33/08
Filed: 1965-12-29
Abstract: <PICT:1094367/C1/1> A method of working a transparent material, such as boring a hole 3 in glass, by a laser beam 2 comprises applying a medium 4 capable of absorbing laser beam energy at a surface region of the material and then directing the beam into the material towards or through the medium.  The medium 4 may be vaporized metallic layer of between one hundred and several hundred nanometres thickness. Reference has been directed by the Comptroller to Specification 1,021,909.
Patent GB-1362396-A (GB)
Title: Method of manufacturing billets from powder
IPC: B22F3/15
Filed: 1972-01-05
Abstract: 1362396 Powder metallurgy ALLMANNA SVENSKA ELEKTRISKA AB 5 Jan 1972 [2 Aug 1971] 55270/71 Headings C7A and C7D Metallic powder is formed into a billet by enclosing a body of the powder in a container having an evacuating opening, compressing the body and then pre-heating in a pre-heating furnace while it is being degassed with the evacuating opening connected to a vacuum pump. The evacuating opening is then closed and pre-heating is continued until the external surface is near the upper temperature limit allowable for the material used. The body is transferred to a pressure furnace and heating is continued until the interior of the body is above the lower temperature limit for hot compressing to the required final density and the pressure and temperature are maintained to complete the hot pressing. The temperature during the preheating and degassing step may be 300 to 650‹ C. For example a high speed steel containing À85% C, 4% Cr, 6À3% W, 5% Mo, 3À4% V and 8À7% Co may be pre-heated and degassed at 400‹ C under a vacuum of about 1 Torr. When the powder is of a high speed steel of approximate composition 1À25% C, 4% Cr, 6À3% W, 5% Mo, 3À4% V and 8À7% Co the body is isostatically compressed to 4000 bar before heating and degassing, the centre of the powder body is heated to at least 300‹ C before closing the evacuation opening, and the final sintering temperature is 1050‹C-1175‹C.
Patent GB-1149360-A (GB)
Title: Process for the manufacture of ethylene
IPC: C07C7/00
Filed: 1966-12-12
Abstract: 1,149,360. Olefins. FARBWERKE HOECHST A.G. 12 Dec., 1966 [10 Dec., 1965], No. 55635/66. Heading C5E. A process for the continuous manufacture of ethylene and, if desired, propylene and butylene, by cracking a hydrocarbon feed, e.g. light gasoline, comprises the following steps: (1) mixing the feed in a cracking zone with superheated steam at 1400-1500‹ C. in an amount of 1À5-2À5 times that of the feed; (2) cooling the reaction mixture leaving the cracking zone at about 850‹ C. in three successive stages, viz. (a) indirect cooling to 280-220‹ C. with simultaneous generation of high pressure steam, which is superheated and returned to the cracking zone, (b) direct cooling to effect removal of high boiling hydrocarbons, preferably to 150‹ C., e.g. with a high boiling recycle oil, and (c) indirect cooling to room temperature whereby the readily liquefiable hydrocarbons are separated ; (3) freeing the remainder of the cracked gases from CO 2 , sulphur compounds and acetylenes (e.g. by aqueous alkanolamine or amino-acid solutions for CO 2  and S, and selective hydrogenation for acetylenes); (4) separating normally liquid low boiling hydrocarbons and, if desired, propylene and butylenes by compression at 10-50 atmospheres gauge; (5) recycling at least part, preferably all, of the material separated in step 4 to the cracking . zone after heating and vaporizing separately from the feedstock; (6) washing the gas mixture remaining from step 4 with cuprous salt solution to separate olefins and CO ; and (7) distilling the resulting cuprous salt solution to remove and isolate ethylene or the desired mixture of olefins. The gases which are insoluble in the cuprous salt solution (at step 6) may be used for heat generation e.g. for production and/or superheating of steam for use in the cracking zone. The pressure of the high-pressure steam produced in the first cooling stage may be released with production of mechanical work.
Patent GB-1254736-A (GB)
Title: Benzodiazepine derivatives and process for preparing the same
Inventor: TAKAGI HIROMU
IPC: C07D513/04
Filed: 1968-11-27
Abstract: 1,254,736. Benzodiazepine derivatives. SANKYO CO. Ltd. 27 Nov., 1968 [27 Nov., 1967 (3); 1 July. 1968; 31 Aug., 1968 (2); 18 Oct., 1968 (2); 24 Oct., 1968 (2); 29 Oct., 1968], No.56354/68. Heading C2C. Benzodiazepine derivatives are prepared according to the following reaction scheme (R 1-3  = H, C 1-4  alkyl or alkoxy, halogen, OH, NO 2 , CN, acyl, CF 3 , NH 2 , acylamino, C 1-4 , alkylamino, di(C 1-4  alkyl)amino; acyloxy, COOH, alkoxycarbonyl; NH 2 CO, (C 1-4  alkyl)carbamoyl, di(C 1-4  alkyl)carbamoyl, C 1-4  alkylthio, alkylsulphinyl or alkylsulphonyl; R 4  = H, C 1-4  alkyl, cycloalkyl, aralkyl, aryl, phenacyl; R 5,6  = H, C 1-4  alkyl ; A = polymethylene optionally substituted by one or more C 1-4 , alkyl, C 1-4  hydroxyalkyl and/or phenyl groups; X = O, S; Q = acid radical of a reactive ester).  The above compounds are tranquillizers, and may be administered in the form of pharmaceutical preparations containing them in association with a carrier.
Patent GB-1181700-A (GB)
Title: Apparatus for Locking a Bobbin Sleeve
IPC: B65H75/24
Filed: 1967-12-13
Abstract: 1,181,700. Securing bobbins on shafts. MASCHINENFABRIK RIETER A.G. 13 Dec., 1967 [13 Dec., 1966], No. 56546/67. Heading F2U. [Also in Division D1] An expandible mandrel for mounting a bobbin sleeve 17 comprises a plurality of coaxial tubes 6, 7, 10 having sloped end surfaces in facing relation; a pair of elastic deformable O- rings (15, 16) in contact with the sloped surfaces; and means for moving at least one of the tubes relative to the remainder whereby the rings roll up the slopes into deformable frictional engagement with the bobbin sleeve 17. Movement of the tubes 6, 7, 10 away from each other causes the rings to roll down the slopes and out of frictional engagement with the bobbin sleeve 17. The 0-rings can be made of rubber. The tubes 6, 7, 10 may be moved together by spring 4<SP>11</SP> and further apart by forcing fluid through bore 3.