baber/WOPTO huggingface dataset:
Patent GB-1226275-A (GB)
IPC: H04B10/12
Filed: 1969-07-03
Abstract: 1,226,275. Multiplex optical communications. NIPPON SELFOC CO. Ltd. July 3, 1969 [July 6, 1968(3)], No.33663/69. Heading G1A. [Also in Division H3-5] A multiplex communication system uses a fibrous converging light guide along which more than one coherent light beam may be transmitted providing more than one channel of communication. The converging light guide has a refractive index which varies across its section according to the law n = n a  (1-¢ a 2 x<SP>2</SP>) where n is the refractive index at a point x from the axis, n a  is the refractive index on the axis and a 2  is a constant. The beams should be projected on to the end of the guide with a spot size of (#o/#n a )<SP>¢</SP>   a 2 <SP></SP> where # o  is the free space wave length. Fig.1 shows a multiplex system in which the guide 10 has a total length N#/#a 2 , where N is an integer. Coherent light beams L1, L2 and L3 modulated with information signals are incident on the axis of the guide at one end and emerge from the guide at the other end at angles equal to their angles of incidence and may therefore be received and demodulated by respective receivers 21, 22 and 23. In a modification the guide may have a (2N+1)# / 2#a 2  in which case guide may have a length in which case light beams, L1, L2, and L3, Fig.2, are made incident in parallel at various distances from the axis of the guide, and emerge from the far end of the guide at angles dependent on the distance of the point of incidence from the axis of the beam at the input end of the guide, and may be received by an arrangement as shown in Fig.1. It is also suggested that a portion of the guide may be replaced by a lens system, 51, 52, Fig.6. As shown the signals on the input channels L1, L2 and L3 are phase displaced so that they may be demodulated by a time demultiplexer, 30. The guide may also be used for time division or polarization division multiplex transmission, the constancy of the mean phase velocity in the guide allowing the use of pulsed signals in the guide.
Patent GB-1226891-A (GB)
IPC: G03C1/685
Filed: 1969-05-08
Abstract: 1,226,891. Photochromic materials and uses thereof. FUJI PHOTO FILM CO. Ltd. 8 May, 1969 [8 May, 1968], No. 23596/69. Heading C4S. [Also in Division C3] A photochromic material comprises a support having coated thereon a layer containing polyvinyl acetate as binder and a photochromic compound of general formula wherein R 1 , R 2  and R 3  is an alkyl group having 1 to 5 carbon atoms, R 4  is a cyano group, a nitro group or -COOR, R 5  is a hydrogen atom, or nitro group, and R 6  is a hydrogen atom, halogen atom, formyl group or -OR, R being an alkyl group with 1 to 5 carbon atoms. A photochromic composition includes the above compound with polyvinyl acetate in a solvent. Supports instanced are paper, baryta paper, polyethylene, terephthalate, cellulose triacetate or a metal. The composition may be applied in non-polar solvents, benzene, toluene, and n-hexane and polar solvents such as methanol, ethanol, acetone, acetonitrile or ethyl acetate. The polyvinyl acetate may be of viscosity in the range 1500 to 2000 c.p.s. and the weight ratio of photochromic compound to polyvinyl acetate 1 to 12:100. In examples R 4 =5-CO 2 C 2 H 5  or 5-CN; R 1 =R 2 =R 3 =CH 3 ; R 5 =NO 2 ; R 6 =H and the composition and polyvinyl acetate with ethyl acetate are applied to polyethylene terephthalate, and baryta paper. Further examples are as above except that R 6 =CHO and the support is cellulose triacetate and a composition has R 4 =5-NO 2  with R 6 =CHO. Mention is made of erasure by heating, increase of colour density by irradiating at 0‹ C. rather than room temperature and excitation by U.V. from sunlight and a mercury lamp.
Patent GB-1228556-A (GB)
IPC: B04B1/18
Filed: 1970-02-19
Abstract: 1,228,556. Discharge valves for centrifugal separators. ALFA LAVAL A.G. 19 Feb., 1970 [26 Feb., 1969], No. 7943/70. Heading B2P. A fluid-actuated, annular membrane valve 16, Fig. 1, for opening and closing one or more peripheral discharge openings S in a centrifugal separator bowl 1, 2 has a generally U-shaped cross-section, each arm 17, (18) of which has at least one annular, bellows-like ridge 25 (26) therein and is made of a pliable but inelastic material, e.g. P.T.F.E. A stiff reinforcing ring 24 is bonded to the interior of the valve upper end portion which is V-shaped and made of the same material as the arms. In a modification, ports for controlled leakage of the actuating fluid may extend through the radially inner and/or outer slope of the apex of the membrane and through the reinforcing ring. In Fig. 3, one or more valves 28 screwed in the reinforcement ring 24 extend through valve-seat openings 29 in the bowl to limit the amount of leakage fluid during the sealing period and to cause a sudden withdrawal of the membrane valve from its sealing position when the supply of actuating fluid is stopped. In Fig. 4, a reinforcement ring 30 is bonded to the top of the central end portion 31 of the membrane valve and a removable annular strip of resilient material is mounted on the apex of the ring 30 to effect sealing.
Patent GB-1229483-A (GB)
IPC: C08G77/10
Filed: 1968-03-27
Abstract: 1,229,483. Polysiloxane catalyst. UNION CARBIDE CORP. 27 March, 1968 [5 April, 1967], No. 14602/68. Heading B1E. [Also in Division C3] A catalyst/promoter mixture for the rearrangment of polysiloxanes comprises (a) an alkali metal or alkaline earth metal oxide, hydroxide, alkoxide, aryloxide, or silanolate, or a tetraalkylammonium, tetraalkylphosphonium, trialkylguanidinium, or trialkylhydrazinium hydroxide, alkoxide or silanolate, and (b) a promoter which is a compound YY'WPQ, wherein Q is oxygen, sulphur or selenium, Y and Y' are together a C 2-18  alkylene group or are each a C 1-18  monovalent hydrocarbon, alkoxy, dialkylamino, or diarylamino group, optionally substituted by alkoxy, nitro, nitrile, nitroso, dialkylamino or diarylamino group, and W is as Y or Y' above, other than a dialkylamino group, or is a group-RP(Q)YY' where R is oxygen, a C 2-12  divalent hydrocarbon group, optionally substituted as Y and Y' above, or polyoxyalkylene or alkylene oxide group or a group -N(R")R"'N(R")-, R" and R"' being monovalent and divalent, optionally substituted hydrocarbon groups as above. In Examples various linear and cyclic polysiloxanes are rearranged by heating with a potassium silanolate ((CH 3 ) 2 Si(OK) 2 ) and tri-nbutyl phosphine oxide, tri-n-octyl phosphine oxide, triethyl phosphate, tri-n-butyl phosphate, O:O:O-triethyl thiophosphate, tetraethyl pyrophosphate, diethyl ethanephosphonate, or triphenyl phosphine oxide.
Patent GB-1229632-A (GB)
IPC: B22C5/04
Filed: 1968-03-28
Abstract: 1,229,632. Continuous discharge mixers. SHERWIN-WILLIAMS CO. 28 March, 1968 [29 March, 1967], No. 27883/70. Divided out of 1,229,631. Heading B1C. A sand-resin mixer for use in a foundry moulding-machine, has three (cylindrical) sections 92, 95, 98 through which sand, from a hopper 39 with a gate 86, flows downwardly to be mixed with the resin binder, from a valve (121) and a nozzle 96, the sections each containing at least one arm 70 or 71 rotated by a drive motor (of a main shaft 68). The flow of mix from the mixer is controlled by controlling the operation of the drive motor, of the gate 86 (with an outlet orifice adjustable by a hand wheel 85) and of the motor-operated resin valve (121). The three sections 92, 95, 98 each have a base 47, 48, 49, the bases being supported on three rods 35, Fig. 4 in a row and separated by sleeves 44, 45, 46 on each rod. The shaft 68 is of square section except where it passes through the bases 47- 49 and in each section it bears two curved arms 70, 71 each of which tapers, from a point 80, Fig. 4, on the upper edge to a point 79 and is bevelled at its upper edge. The arms 70, 71 each bear an L-shaped scraper with a horizontal portion (78) extending over the base and a vertical portion 77 extending up the wall which in each section is provided by a cylindrical shell, half of which is pivotable about a pin 60, Fig. 4, for access to the inside. The outlets 13, 97 and 94 from the three mixer sections and the inlet 91 are angularly staggered as indicated in Fig. 4. The resin binder, forced by variable air pressure from a tank (101), Fig. 5 (not shown), enters the second section 95 through the nozzle 96. Similarly a catalyst from a tank (100) passes through a nozzle 93 into the first section 92 by way of a valve (120). The mixer may be controlled manually or automatically. A timer (161), Fig. 6 (not shown), operates a switch (162) to open and close the sand gate 86 and turn the mixer motor and the resin and catalyst valve motors on and off, with delay in closing the gate and stopping the mixer motor. The sand from the hopper 39 drops into a movable funnel 89 connected to a limit switch 90 and mounted in an outer funnel 88 for controlling the flow rate according to the weight. To ensure proper flow of sand into the mixer 7, a flow timer (159) is energized with the timer (161) and when it times out it operates switches so that unless sufficient sand has dropped from the hopper to trip the switch 90, the timers are de-energized. There are switches (140-143) for the mixer motor, sand gate and catalyst and resin valves, each switch having a run and. a test position.
Patent GB-1229940-A (GB)
IPC: C08G63/52
Filed: 1968-10-07
Abstract: 1,229,940. Block copolyester. FARBWERKE HOECHST A.G. 7 Oct., 1968 [7 Oct., 1967], No. 47399/68. Heading C3R. A block copolyester is made by reacting an aromatic dicarboxylic acid and an aliphatic and/or cycloaliphatic diol (or a linear saturated polyester made from these components) with 2-20% by weight of a polystyrene-butadiene diol calculated on the block copolyester, and optionally subjecting the reaction product to a post-condensation either in the melt or the solid state. The linear saturated polyester is preferably polyethylene terephthalate or poly (1,4- dimethylol cyclohexane terephthalate) and the polyethylene terephthalate may contain small quantities of, e.g., naphthalene-1,4-dicarboxylic acid, adipic acid, butane diol-1,4, neopentylglycol or 1:4 dimethylol cyclohexane. A nucleating agent, e.g. an aluminium silicate, talc, or an organic pigment may be optionally incorporated into the block copolymer, and the copolymer granules may also be coated with an inert hydrophobic substance (such as paraffin wax or other wax).
Patent GB-1230039-A (GB)
IPC: H01J37/20
Filed: 1969-11-24
Abstract: 1,230,039. Positioning articles. NIHON DENSHI K.K. 24 Nov., 1969 [29 Nov., 1968], No. 57481/69. Heading B8S. [Also in Division H1] A device for positioning a specimen 4 (Fig. 1) within a cylindrical column 1 of an electron microscope, comprises a holder 3 for the specimen supported from a lever 8 mounted on the column to allow movement of the holder along the Y axis, and a second lever 17 bearing on the holder in sliding relationship in a bearing plane including the axis of the cylinder to control the position of the holder along the X axis. In Fig. 1 the two levers are pivoted and are rotatable by means of screws 14 and 21 and associated return springs to adjust the specimen position along respective axes. The position is not effected by thermal expansion of the column or of the levers, since expansion along the X axis is taken up by sliding of the holder 3 along the axis of lever 8 and expansion along the Y axis is taken up by sliding of the end of lever 17 along the bearing plane 5. In a modification, Figs. 3 and 4 (not shown), the holder 3 is integral with the lever 8 and its pivot pin is slidable in a slot extending along the X axis.
Patent GB-1233160-A (GB)
IPC: F16B2/04
Filed: 1969-02-28
Abstract: 1,233,160. Stud fastenings. AMP Inc. 28 Feb., 1969 [8 March, 1968], No. 44362/70. Divided out of 1,230,746. Heading E2B. [Also in Division H2] A fastener formed from a sheet metal blank comprises a body part 20 having resiliently deformable side parts 21 curved away from the body part in opposite directions to give the fastener the cross sectional configuration of an S the side parts each having lateral serrations 24 and at one end portion being tapered to facilitate penetration of a panel aperture and each at the other end having an outwardly extending force receiving wing portion 23. In the construction shown the serrations are disposed at a slight angle to the longitudinal axis of the fastener. The fastener is shown connecting a panel member 26 to a panel member 27 the serrations 24 biting into the walls defining opening 28 in panel member 26 and the extremities of wings 23 clamping onto the panel member 27 however in a modification one of the wing portions has a ferrule portion for connection to an electrical conductor and the body part and side parts in such case engage a single panel member; the fastener can be unscrewed from the panel member or members by inserting a screwdriver blade into a space 25 between the wing portions and rotating the fastener.
Patent GB-1237936-A (GB)
IPC: B01J47/10
Filed: 1968-09-18
Abstract: 1,237,936. Ion exchange apparatus. NIPPON RENSUI K.K. 18 Sept., 1968 [27 Nov., 1967], No. 44349/68. Heading BIJ. An ion exchange column (see Fig. I) is divided into ion exchange region 1, separating chamber 10 and charging chamber 3 by means of perforated supporting plates 2 and 11 which allow passage of resin and liquid and is furnished with filters 4 and 12 which allow passage of liquid only, and a partition plate 16, provided with a plurality of separating nozzles 18 and collecting nozzles 17, said partition plate 16 forming a liquid distributing chamber 13 with the base of the column. Upon passage of liquid to be treated through inlet 15 the spent resin in separating chamber 10 is discharged through pipe 14 by means of the nozzles 18 having ejecting ports 18a arranged to eject the liquid in a tangential direction about the axis of the pipe 14 and the nozzles 17 having ejecting ports 17a arranged to radially eject the liquid. When valve 19 is closed all the flow is upwards taking the resin in ion exchange region 1 with it and the exchange reaction takes place. When the supply of liquid is stopped and the liquid is caused to flow downwards the spent resin is transferred to separating chamber 10 while regenerated resin in charging chamber 3 falls into ion exchange chamber 1. This ion exchange column may be combined with a washing and regenerating system (see Fig. 4) comprising a washing tower 22 into which the liquid and spent resin are introduced via pipe 24 and the liquid flows upwards to wash the resin and is removed via discharge pipe 25, the clean resin being transferred to the regenerating and rinsing column 23 by liquid entering via pipe 24 supplemented by liquid from pipe 28 if necessary, additional liquid to aid the upward flow of resin in the regenerator 23 being added by opening valve 49. The resin moves upwards through the regenerator which comprises a lower filtering chamber 39 with filter 35, a regenerating portion 31, regenerant being introduced through pipe 37 and removed via pipe 42, a substituting portion 32, a rinsing portion 33 the rinsing liquid being introduced at pipe 43 and collected and removed at pipe 38, a filtering chamber 40 with filter 36 and a resin transfer chamber 34 with outlet for resin at pipe 41, the resin being returned to the ion exchange column by means of the water supplied from rinsing water inlet pipe 43. In a modification of the regeneration system (Fig. 5 not shown) an upright regenerating column and an upright rinsing column are combined in a U-shaped configuration, a backwash column being situated vertically above the regeneration column.
Patent GB-1239751-A (GB)
IPC: C08L67/02
Filed: 1967-05-23
Abstract: 1,239,751. Polyethylene terephthalate moulding compositions. IMPERIAL CHEMICAL INDUSTRIES Ltd. 6 May, 1968 [23 May, 1967; 8 Aug., 1967; 27 Dec., 1967], Nos. 23986/67, 36361/67 and 58670/67. Heading C3R. Thick-walled articles (i.e. not conducive to orientation by drawing) are made by melt shaping polyethylene terephthalate which has been mixed with a polyfunctional compound (i.e. one which contains groups which will react with at least two groups, either of which is -OH or -COOH) in such a way and concentration that the polymer of the articles has an intrinsic viscosity of at least 0.7 decilitres gram<SP>-1</SP> (measured in o-chlorophenol at 25 C.). In a modification, glass fibres, which may be coated, are incorporated into the melt shaping mixture. If glass fibres are present in the polymer melt this specified viscosity of the polymer is essential providing that the concentration of the polyfunctional compound and the conditions of the melt shaping process are chosen to give an article having a notched impact strength of at least 2.5 kg. cm./cm<SP>2</SP>. Specified groups which may be contained in the polyfunctional compound are carboxylic acid or anhydride, acid halide epoxide and isocyanate groups. Exhaustive lists of specific compounds are given. There may also be present a finely divided solid as a crystallization promotion agent, which 'may be the catalyst, e.g. Sb 2 O 3 , used in the production of the polyester, other specified agents being CaCO 3 , CaSO 4 , metals, metal oxides, talc and pyrophillite. There may also be present fillers, pigments, dyes, lubricants, heat and light stabilizers, plasticizers, mould release agents and other natural or synthetic polymers.
Patent GB-1251840-A (GB)
IPC: C07D211/16
Filed: 1968-12-24
Abstract: 1,251,840. Antioxidants for waxes, fatty oils, lubricants, fuels. J. R. GEIGY A.G. 24 Dec., 1968 [29 Dec., 1967], No. 61307/68. Headings C5C, C5F, C5G and C5W. [Also in Divisions C2 and C3] Compounds consisting of (a) from 2 to 4 amide units of formula:- in which R<SP>1</SP> is hydrogen or lower alkyl (1-6 carbon atoms) and x is 1-6 and (b) 1-3 polyvalent hydrocarbon chains having 2-30 carbon atoms, one of the free nitrogen atom valences each amide group being satisfied by a free carbon atom valence of the chain and the other being satisfied by a hydrogen atom or a free carbon atom valence of the same or a second hydrocarbon chain; or (c) a tris(polymethylene)- amine group of 6-18 carbon atoms, one of the free nitrogen atom valences of three of the amide units being satisfied by one of the three free carbon atom valences of the tris(polymethylene) amine and the other free nitrogen atom valences being satisfied by hydrogen atoms; or (d) a N,N,N<SP>1</SP>,N<SP>1</SP>-tetra(polymethylene)alkane diamine group of 10-30 carbon atoms one of the free nitrogen atoms of each of four of the amide units being satisfied by one of the four free carbon valences of the diamine and the other free. nitrogen valences of the amide units being satisfied by hydrogen, are used as antioxidants for lubricants of the aliphatic ester type e.g. di- (2-ethylhexyl)-azelate and pentaerythritol tetracaproate; animal and vegetable oils e.g. linseed oil, fat, tallow, lard, peanut oil, cod liver oil, castor oil, palm oil, corn oil and cotton seed oil; hydrocarbons e.g. gasoline, natural and synthetic diesel oil, mineral oil, fuel oil, drying oil and cutting fluids and waxes. Examples are given of the use of the antioxidants in the treatment of (a) a mineral oil (Ex. 9); (b) lard and cotton seed oil (Ex. 10); (c) gasoline (Ex. 11); (d) paraffin wax (Ex. 12) and (c) lubricating oil (Ex. 13).
Patent GB-1256576-A (GB)
IPC: C10B53/08
Filed: 1969-09-04
Abstract: 1,256,576. Coking coal. METALLGESELLSCHAFT A.G. 4 Sept., 1969 [5 Sept., 1968], No. 43823/69. Heading C5E. A continuous process for making shaped coke from ground coal made into pellets or briquettes with a binder, optionally with ore and/or lime, comprises treating the pellets &c. in three temperature stages in series. In the first stage the pellets are moved concurrently with a fine grained heat carrier, preferably sand, which is at a temperature of 500‹ to 600‹ C., for 2 to 5 minutes. In the second and third stages the pellets are moved transversely or in countercurrent to a fine grained heat carrier. The temperature of this heat carrier rises from an initial temperature in the range 400‹ to 500‹ C. to a final one of 500‹ to 600‹ C., and the contact time is 30 to 90 minutes, in the second stage, whilst the temperature in the third stage rises from an initial 550‹ to 650‹ C. to a final 850‹ to 1000‹ C. The process may be performed in two rotary retorts, see Figure (not shown), if sand is the carrier, or in a shaft furnace if gas is used. Sillimanite, corundum or coke may be used as the heat carrier instead of sand.
Patent GB-1256717-A (GB)
IPC: G03G15/10
Filed: 1968-11-20
Abstract: 1,256,717. Photo-sensitive sheet developing apparatus. RICOH K.K. Nov.20, 1968 [Dec. 4, 1967 (2); Dec. 13, 1967 (4)], No. 54968/68. Headings G2A and G2H. Photo-sensitive sheet developing apparatus has a rotor 105 partitioned into a plurality of sheet receiving spaces, a tank 106 for housing a developer 107, drive means for rotating the rotor to carry the sheet receiving spaces successively through a sheet receiving position, a sheet developing position inside the tank and a sheet discharge position, the rotor including means for holding the sheets within the sheet receiving spaces during the passage of the sheets through the developing position. The rotor has equlangularly disposed fixed plates 102 and clamping plates 103 urged against each fixed plate so as to clamp the sheet. A plate 116a holds each clamping plate away from the fixed plate during travel of the rotor from the discharge and receiving position so as to permit a stream of air from a blower to dry the plates. The apparatus may be embodied to a photo-copying machine having a cutting station 109 a charging station 110 an exposing station 111 and feed rollers 112. Developed sheets are removed by a brush 118. The plate 116a may be somewhat shorter and disposed adjacent the receiving position, Fig. 1 (not shown).
Patent GB-1257664-A (GB)
IPC: A62C31/00
Filed: 1969-05-13
Abstract: 1,257,664. Foam generators. A. F. ALBACH. 13 May, 1969 [1 June, 1968], No. 24241/69. Heading B1C. A foam generator of the type in which air is induced through apertures 4 13 in a pipe 2 has upstream of the apertures a jet plate 4 having a plurality of holes in concentric circles and of increasing diameters from the centre of the plate, outwards, see Fig. 2 (not shown), they may also be inclined to the pipe axis, see Fig. 3 (not shown). The air intake may be surrounded by a sleeve 18 to which a low pressure air supply is connected. The foam pipe may have a venturi form portion 14, a curved screen 15 and guide plates 17 which may be parallel to the axis or helically arranged as at 17'.
Patent GB-1289622-A (GB)
IPC: A61C8/00
Filed: 1970-07-03
Abstract: 1289622 Method of inserting a dental implant A E EDELMAN 3 July 1970 [7 July 1969] 32406/70 Heading A5R [Also in Division F2] A method of inserting a dental implant 20 into a jaw bone comprises mounting the implant on a first head H-1, positioning it adjacent the jaw bone, and driving the implant by percussive action on the head part way into the jawbone, replacing the first head H-1 by a second, (H-2), Fig. 4 (not shown) which second head has a cut-away portion (37) through which the implant may be sighted and properly aligned, and replacing the head (H-2) by a third head (H-3), Fig. 5 (not shown) adapted only to contact a head portion 25 of the implant 20, via which the implant is driven completely home. As shown, the head H-1 has a hexagonal stud 29 adapted to be received in an elongate handle during an inserting operation, two side portions 32 defining an open sided socket 31, 35 containing an 'O' ring 33. The implant 20 is held by the 'O' ring at its head 25 and the blade portion 22, 23 retained by means of grooves 34 in the portions 32. Alternative forms of head H-1 are shown in Figs. 6-16 (not shown).