baber/WOPTO huggingface dataset:
Patent GB-1439759-A (GB)
Title: Semiconductor devices
IPC: H01L21/285
Filed: 1972-11-24
Abstract: 1439759 Transferred electron effect devices MULLARD Ltd 21 Sept 1973 [24 Nov 1972] 54388/72 Heading H1K In a transferred electron effect device comprising a semi-conductor substrate of one conductivity type carrying a higher resistivity epitaxial layer of the same type a first electrode ohmically contacts the upper face of the layer and a second electrode, surrounding parts of the layer, ohmically contacts the substrate at a distance from the first electrode greater than the layer thickness via an aperture in the layer, the construction being such that the active region of the device is constituted by that part of the layer beneath the first electrode, the thickness of which determines the frequency of operation. An N-type gallium arsenide device for X-band operation is produced in multiple from a 90 Á wafer with a doping of 10<SP>18</SP> atoms/cc. carrying a 10 Á epitaxial layer doped with 10<SP>15</SP> atoms/cc. After etching 10<SP>3</SP> sq. Á holes through the layer, tin and silver are evaporated over and alloyed to the entire layer and gold electroplated to a thickness of 10-15 Á on electrode areas defined by apertures in photoresist masking. After removing the masking unplated tin-silver is removed by etching and the wafer subdivided by etching through masking on the front or rear face of the structure into beam leaded structures, e.g. of the form shown in Fig. 1 or with the second electrode (anode) 6 partially surrounding the first electrode (cathode) which may be elongated and extend to one edge of the wafer. The interelectrode spacing is preferably 100Á.
Patent GB-1196789-A (GB)
Title: Method for the Production of Patterned Bodies.
IPC: B29C71/02
Filed: 1967-11-30
Abstract: 1,196,789. Patterned, shaped bodies. OPTIPATENT A.G. 30 Nov., 1967 [22 Dec., 1966; 23 June, 1967], No. 54570/67. Heading B6G. A body made of plastics material which when heated changes colour is provided with a colour pattern by heating selected portions of the body. The bodies may be spectacle frames and bows thereof, and small parts, e.g. buttons made of plastics duroplastic materials including epoxy resins, unsaturated polyester resins or polyurethane resins. The body can be laid on a heat source shaped to the desired pattern (Figs. 5, 6, not shown). Alternatively, the body may be shielded from a heat source by a mask of the desired pattern either placed in contact with the body or maintained at a distance therefrom. The body may be moved relative to the heat carrier and/or the mask. Heating may also be effected by means of heated liquids, e.g. the bodies may be partially immersed into heated vegetable oils, mineral oils, asphalt, silicones, metal baths or polyvalent alcohols, e.g. glycerol. The intensity of colour change is varied by adjusting the heating temperature and/or the heating time. Organic dyestuffs are preferred as the heat sensitive material, particularly translucent dyestuffs, e.g. of the azo-type. Substances may also be compounded with the bodies which under the influence of heat produce oxygen for oxidation and resulant colour change of plastics material. Oxidation is thereby effected in the innermost layers of the bodies. The plastics material may also be compounded with a substance the colour of which is changed by oxidation. In an example a mixture of a polyepoxide, a polyamide, a violet dyestuff compounded to a paste was cured at 100‹ C. within half an hour. The body was covered by a patterned mask and moved at a distance of 5 centimetres over heating plates heated to 400‹ C. In Fig. 1 body 5 is fixed to a mask 1 fixed to a conveyer chain 2 arranged to move over a heating element 3. In other embodiments (Fig. 3, not shown) the body is clamped between two masks and a heater is arranged on each side of a section of a conveyer chain. In Fig. 4 (not shown) one heating element is replaced by a reflector.
Patent GB-1269890-A (GB)
Title: Canister for a strip of photographic film or the like
IPC: G03B17/30
Filed: 1970-11-17
Abstract: 1,269,890. Cassettes. NATIONAL CASH REGISTER CO. Nov. 17, 1970 [Dec. 2, 1969], No. 54588/70. Heading G2A. A chamber 12 for photographic film contains a resiliently flexible member 32 which is straight when the chamber is empty, but which is bowed. away from the centre of the chamber as film is fed into the chamber and coils itself therein. As shown, the chamber 12 is for taking up film from a supply chamber 10, the whole forming a cassette, with a guideway 22 down which the film 15 is fed from one chamber to the other by means of a motor-driven sprocket 5. The two chambers are identical. The flexible member 32 is of any suitable springy material, and is in the form of a pair of rails 45, 46 joined by thinner end portions 47, 48, so that the film rides by its edges on the rails, and is not touched by portions 47, 48. Similarly the interior of the chamber has two rails 50 along which the edges of the film ride. One end 30 of the member 32 latches into a recess 28 in the chamber wall, and normally it lies chordally across the chamber. As film 15 is fed into chamber 12, it is guided by the cylindrical walls to take up a coiled shape, which initially rests against member 32 but does not flex it. As additional film is driven into chamber 12, the pressure of the coils against member 32 builds up sufficiently to bow it ourwards, away from the centre.
Patent GB-1450536-A (GB)
Title: Method of making tablets
IPC: A61K33/00
Filed: 1972-11-27
Abstract: 1450536 Sustained release tablets containing lithium carbonate DELANDALE LABORATORIES Ltd 20 Nov 1973 54671/72 Addition to 1209093 Heading A5B Sustained release pharmaceutical tablets for the treatment of manic depressive states, comprising powdered lithium carbonate; a sustained release agent comprising a mixture of glyceryl mono-, di- and tri-esters of one or mere C 16-18  straight chain saturated fatty acids and one or more excipients, are prepared by coating a mixture of powdered lithium carbonate and one or more excipients with the sustained release agent, granulating the mixture using about (11.55 to 24.5 p) litres of water per 100 kg lithium carbonate where p is the bulk density of the lithium carbonate in grams per c.c., screening to form a granulate whose particles are all less than 12 BS Mesh, from 20 to 30% of which have particle sizes in the range of from 12 BS to 60 BS Mesh and from 70 to 80% of which have a particle size below 60 BS Mesh, and compressing the granulate into tablets. The tablets may comprise a filler e.g. mannitol, a binding agent e.g. gum acacia and a lubricant e.g. magnesium stearate. The tablets preferably contain 9.5 to 11.4 parts by weight of the mixture of glyceryl esters per 100 parts by weight of lithium carbonate. Preferably the sustained release agent is added in alcohol solution and at 68C or higher, the powdered lithium carbonate and filler being pre-heated to about this temperature before adding the solution.
Patent GB-1358722-A (GB)
Title: Tetrahydronaphthyloxyaminopropanols and related compounds
IPC: C07D303/26
Filed: 1972-11-28
Abstract: 1358722 Tetrahydronaphthyloxy aminopropanol derivatives E R SQUIBB & SONS Inc 28 Nov 1972 [1 Dec 1971] 54913/72 Addition to 1358721 Heading C2C The novel compound of Formula I namely 2,3-cis-1,2,3,4-tetrahydro-5-[2-hydroxy- 3 - (tert - butylamino) - propoxyl] - 2,3 - naphthalenediol is prepared by dissolving dihydronaphthalene acetate of the formula in acetic acid and water containing from 92 to 98% acetic acid, treating the solution with a silver acetate and iodine, heating the solution to a temperature within a range from 80 to 120‹ C., subjecting the resulting mixture to basic hydrolysis to form cis-5,6,7,8-tetrahydro-1,-6,7-naphthalenetriol, reacting the naphthalenetriol with an alkali metal akoxide in an alcohol solvent boiling below about 100‹ C., stirring the residue in a dipolar aprotic solvent with epichlorohydrin and reacting the resulting 2,3-cis-1,2,3,4-tetrahydro - 5 - [2,3 - epoxy propoxyl] - 2,3 -naphthalenediol with tertiary-butyl amine.
Patent GB-1283348-A (GB)
Title: Disproportionation of halogen-substituted olefine
Inventor: O'HARA JOAN IRENEE
IPC: C07C17/00
Filed: 1968-11-22
Abstract: 1283348 Halo-olefins BRITISH PETROLEUM CO Ltd 5 Nov 1969 [22 Nov 1968] 55464/68 Heading C2C [Also in Division C5] Halo-substituted olefins are produced by contacting a halo-substituted olefin alone or in admixture with an unsubstituted olefin or another halo-substituted olefin with a disproportionation catalyst under such conditions of temperature and pressure that disproportionation occurs, and with the proviso that the halosubstituted olefin is one in which the halogen atom is at least two carbon atoms removed from the double bond.
Patent GB-1515280-A (GB)
Title: Ruminant feed compositions
IPC: A23K50/15
Filed: 1975-12-19
Abstract: 1515280 NPN ruminant feed CIBA-GEIGY AG 19 Dec 1975 [24 Dec 1974] 55901/74 Heading A2B Feedstuff for ruminants comprises N-methylol urea and/or N-dimethylol urea as a NPN source and a carbohydrate, protein, mineral, vitamin or other conventional feedstuff. The composition may also comprise a binder and an attractant, and may take the form of a cattle lick.
Patent GB-1334376-A (GB)
Title: Necked-in cans
IPC: B65D8/18
Filed: 1970-11-25
Abstract: 1334376 Making cans; seaming CROWN CORK & SEAL CO Inc 25 Nov 1970 [20 Jan 1970] 55997/70 Headings B3J and B3A [Also in Division B8] Sheet metal cans are made by welding 28, Fig. 1, and soldering a side seam 16, reducing the diameter of one or both of the ends of the seamed body, and double-seaming a can-end 14 on one or both of the reduced ends. One or two spot or projection welds 28 secure overlapping portions 26 at the ends of an interlocked section 30 of the side seam. The seam is then sealed on a soldering roll, Fig. 9d (not shown), before the end of the body, supported on a mandrel 52, Fig. 9e, is reduced by a tool 54, revolved around the body. A collapsible mandrel 52 is used if both ends of the body are to be reduced. End-flanging and double-seaming follow to secure the can ends.
Patent GB-566827-A (GB)
Abstract: 566,827. Cyanuric chloride. METCALFE, T. P., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. June 7, 1943, No. 9090. [Class 1 (ii)] Cyanuric chloride is obtained by polymerizing gaseous cyanogen chloride in the presence of anhydrous aluminium chloride and in the absence of other solvent or diluent, and then vaporizing the cyanuric chloride from the polymerization mass, if desired, with the assistance of air or other inert gas. According to one example, gaseous cyanogen chloride is passed over lumps of anhydrous aluminium chloride at a temperature of 100‹ C. Liquid cyanuric chloride forms in which the aluminium chloride dissolves and the cyanogen chloride is passed through the resulting solution at a temperature of 165-170‹ C. The cyanuric chloride is then removed by passing a stream of air through the liquid at a temperature of 180-200‹ C. and is sublimed in a receiver. According to a modification, polymerization and sublimation are effected simultaneously in the latter part of the process by passing gaseous cyanogen chloride and air at the same time by separate inlet tubes into the liquid. The statement of prior knowledge refers to the production of cyanuric chloride by passing cyanogen chloride into benzene containing aluminium chloride, by treating cyanogen chloride with antimony, boron, iron and titanium chlorides, by passing chlorine into a solution of anhydrous hydrogen cyanide in chloroform, and by saturating an ether solution of cyanogen chloride with dry hydrogen chloride.
Patent GB-1215476-A (GB)
Title: A process for the production of mass-dyed filaments or fibres of polyamides
Inventor: ISTEL ERICH
IPC: D01F6/60
Filed: 1967-12-18
Abstract: 1,215,476. Mass dyed polyamides. FARBENFABRIKEN BAYER A.G. 18 Dec., 1967 [17 Dec., 1966], No. 57318/67. Heading C3R. Polyamide filaments or fibres are mass dyed with 0À01 to 2 wt. per cent of an anthraquinone dye of the formula where R is H, CH 3  or -C 6 H 4 .CH 3 ; R 1  is H or -SO 3 Na and R 2  is H, -NH.C 6 H 4 .CH 3  or The only such dyes specified are those of the formulµ They may be prepared by dissolving the dye in a polyamide to provide a concentrate used to colour a melt of the same or a different polyamide which is melt spun. In examples concentrates of the two specified dyes in nylons 6 and 6/66 (85 : 15 by wt.) respectively are used in the melt spinning of nylon 6.
Patent GB-1337127-A (GB)
Title: Vertical deflection device
IPC: H03K4/69
Filed: 1970-12-02
Abstract: 1337127 Transistor deflection circuits MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 2 Dec 1970 [6 Dec 1969 24 Dec 1969] 57340/70 Heading H3T A deflection coil 6 is driven by alternately conducting transistors 3, 4; and a diode 64 conducts during at least part of the blanking period to by-pass T3 and thereby remove its damping effect on the free oscillation of L6 and C63 to permit faster recovery between sweeps. An input sawtooth to T52 (VI, Fig. 2, not shown) causes T3 current to decrease and then T4 current to increase (i c1  and i c2 ), the current in L6 thus reaching a negative peak (-I DY1 ). As this current begins to collapse, the voltage across the coil reverses and forward biases the diode 64, and also reverse biases a diode 61 in series with T3, T4. L6 now resonates with the capacitor 63 in parallel with D61, and a half-cycle of oscillation (t 1 -t 2 -t 3 ) proceeds to reverse the current in L6. Whereas a prior art arrangement (Fig. 1, not shown) is said to provide a reversed current (+ I DY2 ) less than the full value (+ I DY1 ) due to T3 damping, the diode 64 enables the full current reversal (to + I DY1 ) and thereby speeds up recovery. A feedback capacitor 65 which improves linearity of the sweep requires another diode-capacitor combination to be inserted in T3 base bias circuit in order to eliminate the damping effect of C65 during blanking. The diode-capacitor combinations 54, 62 and 61, 63 may be combined (61, 63, Fig. 7, not shown) in which embodiment complementary transistors are used for T3, T4. Another embodiment (Fig. 5, not shown) uses a transformer to drive T3, T4, and the parallel diode capacitor combination 61, 63, Fig. 6, is now placed between T3 and T4 (14, 15).
Patent GB-1176160-A (GB)
Title: Finger and Cutter Base for Mowers and Headers
IPC: A01D34/18
Filed: 1967-12-18
Abstract: 1,176,160. Mowing machine. KEECH CASTINGS PTY. Ltd. 18 Dec., 1967 [20 Dec., 1966], No. 57376/67. Heading A1F. The finger and cutter base for use in a mower has a shank 1, cutter base 2, and finger 3 cast or forged integrally from steel. The cutter base having shearing edges 8, 8a is machined to provide a cutter slide-face 7, after which a finger-extension 12 is welded as at 13 over and spaced from the face 7 to form a slide guide for the cutter. The edges of extension 12, or the shearing edges 8-8a may be serrated to effectively hold the stems of grass being cut. The finger and base can be manufactured in a gang of two or more.
Patent GB-1357890-A (GB)
Title: Devices for measuring the liquid contents of containers
IPC: G01F23/66
Filed: 1970-12-03
Abstract: 1357890 Liquid level indication FLIGHT REFUELLING Ltd 23 Nov 1971 [3 Dec 1970] 57494/70 Heading G1H In a device for measuring the liquid contents in a fuel container a flexible graduated tape 19 is supported on a pulley 20 and carries a magnet 15 within a non-magnetic tube 4, closed at its lower end 5, and a float 10, arranged to move externally of the tube 4, carries a magnet 12 and the arrangement is such that alteration of the liquid level causes the tape 19 to be moved and the liquid level can be read on the tape 19 through a transparent cover 7. Alternatively a perforated tape may drive a pulley to operate a dial, digital or local or remote read-out device, or the tape may be magnetic and uncoded to indicate on a pick-up device, depths or operate switching or alarm devices.
Patent GB-1182317-A (GB)
Title: Magnetic Tape Recording Apparatus
IPC: G11B15/64
Filed: 1967-12-19
Abstract: 1,182,317. Magnetic tape recording. FERNSEH G.m.b.H. 19 Dec., 1967 [31 Dec., 1966], No. 57871/67. Heading G5R. A guide 3 bends a magnetic tape 1 round part of the periphery of a rotary head wheel 2 carrying at least one recording head 2a and includes, immediately adjacent to the head wheel 2, an erase head 13, 14, 15 having a gap 16 which is substantially parallel to the path of the recording head(s) 2a and is shaped to conform to the curvature of the tape 1. Suction is applied to slots 11, 12 in the guide 3.
Patent GB-1363170-A (GB)
Title: Process for the manufacture of ethers
IPC: C07C41/00
Filed: 1972-12-15
Abstract: 1363170 Dimethylformamide acetals and a process for ethers F HOFFMANN-LA ROCHE & CO AG 15 Dec 1972 [16 Dec 1971] 57977/72 Heading C2C  The invention comprises reacting a phenol with N,N-dimethylformamide di-tert.-butyl acetal (obtained substantially pure by the interaction of the dimethyl acetal with tert.-butanol in the presence of acid) under basic conditions to give tert.-butyl aryl ethers. Examples of phenolic hydrocarbons which can be used in the process are phenol, naphthol, 3-hydroxy-N-formylmorphinan, 3-hydroxymorphinan, morphine, o-, m- and p-cresol, p-aminophenol, o-nitrophenol, 2,4,6 - trinitrophenol, p - acetamidophenol, thymol, 2,6 - di - t - butyl - 4 - methylphenol, 2 - hydroxy - 4 - isopropyltoluene, guaiacol, eugenol, pyrocatechol, resorcinol, hydroquinone, 2,4,6 - trinitroresorcinol, pyrogallol, phloroglucinol and o-, m- and p-bromophenol. Examples of t-butyl aryl ethers obtained are (+)-3-t-butoxy-N-methylmorphinan and its D-tartrate hydrate, (- )-3-t-butoxy-N- methylmorphinan and its L - tartrate hydrate, (+) - 3 - t - butoxymorphinan and its D-tartrate, 3 - t - butoxy - 7,8 - didehydro - 4,5α - epoxy - 17- methylmorphinan - 6α - ol and its D - tartrate diethanolate, t - butyl phenyl ether, t - butyl 1- naphthyl ether, o-, m- and p - t - butoxytoluene, 1 - t - butoxy - 2 - nitrobenzene, 1 - t - butoxy - 3- nitrobenzene, 1 - t - butoxy - 4 - nitrobenzene, 1- t - butoxy - 2,4,6 - trinitrobenzene, 1 - bromo - 2- t - butoxybenzene, 1 - bromo - 3 - t - butoxybenzene, 1 - bromo - 4 - t - butoxybenzene, 1,2 - di - tbutoxybenzene, 1 - t - butoxy - 2 - methoxybenzene, 1,3 - di - t - butoxy - 4 - n - hexylbenzene, 1,4 - dit - butoxybenzene, 1,2,3 - tri - t - butoxybenzene, 1,3,5 - tri - t - butoxybenzene, p - t - butoxyacetanilide, (+) - 3 - t - butoxy - N - formylmorphinan, 3 - t - butoxy - 7,8 - didehydro - 4,5α- epoxy - 17 - methylmorphinan - 6α - ol trans - 3- dimethylamino - 2 - propenoic acid ester and 3 - t - butoxy - 7,8 - didehydro - 4,5α - epoxy - 17- methylmorphinan - 6α - ol dimethylcarbamate. The following compounds are also prepared: (+) - 3 - methoxymorphinan, ( + ) - 3 - hydroxymorphinan, (+) - 3 - hydroxy - N - formylmorphinan, O<SP>6</SP> - mono - and O<SP>3,6</SP> - di - acetylmorphines and hydrochlorides thereof, morphine, methoxymethylmorphine, 7,8 - didehydro- 4,5α - epoxy - 17 - methyl - 6α(2,2,2 - trichloroethylcarbonyldioxy) - 3 - methoxymethylmorphinan, 7,8 - didehydro - 4,5α - epoxy - 17 - methyl - 6α(2,2,2 - trichloroethylcarbonyldioxy)morphinan - 3 - ol, 7,8 - didehydro - 4,5α - epoxy - 17- methylmorphinan - 3,6α - diol - 6 - dimethylcarbamate, 3,3<SP>1</SP>,6α,6α<SP>1</SP> - dicarbonyldioxy - bis - 7,8- didehydro - 4,5a - epoxy - 17 - methylmorphinan and N,N - dimethylformamide - t - butyl methyl acetal.
Patent GB-1188840-A (GB)
Title: Pivotally Adjustable Seat Back.
Inventor: RADKE ARTHUR OLSEN
IPC: A47C7/48
Filed: 1967-12-29
Abstract: 1,188,840. Seats. BOSTROM CORP. 29 Dec., 1967, No. 59005/67. Heading A4J. The back-rest 12 of a vehicle seat is formed with back-supporting surfaces on opposite sides and is pivotally mounted, at 22, about an axis vertically displaced from its middle (24), so that each side, in use, is at a different height above the seat part 10. Pivots 22 may include a resilient washer (34) to increase the frictional resistance to turning the back-rest.
Patent GB-1400320-A (GB)
Title: Radial piston machines
IPC: F03C1/40
Filed: 1973-12-20
Abstract: 1400320 Fluid-pressure servomotor systems ROBERT BOSCH GmbH 20 Dec 1973 [23 Dec 1972] 59267/73 Heading G3P [Also in Division F1] A stroke adjusting mechanism in a radial piston motor or pump comprises an adjusting ring 8 acting on the working pistons 6 via slide shoes 7, at least one adjusting piston 17, 21 and a rotatable control member 33 having a duct 37 with a mouth opening out through the end-face 35 of an eccentric pin 34 to define a variable restriction with an annular groove 38 in an end-face of the ring 8. In the case of the pump shown, fluid at output pressure acts on adjusting piston 17 via line 55 and is also passed through a throttle 54 in line 53 and via a branch 56 to act on the larger opposed adjusting piston 21. Line 53 also communicates with the duct 37 within control member 33 such that in the equilibrium condition of ring 8 there is a small fluid-flow through the variable restriction defined at the mouth of duct 37, which thence flows to drain 58 via line 57. If control lever 42 is now moved (anti-clockwise), as viewed in Fig. 2, the eccentric pin 34 will move through an arc to bring the mouth of duct 37 into increased register with annular groove 38 in ring 8. As a result of the increased flow through duct 37 and line 53, a greater pressure drop exists at throttle 54 and the pressure acting upwards on piston 21 thus falls. Piston 17  accordingly moves ring 8 downwards to adjust the pump stroke and simultaneously reduce the variable restriction at the mouth of duct 37 until the forces on ring 8 again balance. A plane surface (24), Fig. 3 (not shown) on the interior of the pump housing 1 acts as a guide for such movement of ring 8. Eccentric pin 34 also acts as a bearing for a claw member 48 having projections 49, 50 engageable with the inner and outer peripheries of ring 8 to provide a mechanical connection between the latter and control lever 42 in the event that fluid pressure is too low for servo-control. The end of duct 37 remote from pin 34 sealingly contains a ball 40 adjacent a drain line 59. In modifications, control lever 42 may be replaced by a piston or a threaded spindle. Instead of two adjusting pistons 17, 21, the mechanism may include a single differential piston. The pump also includes a driving- shaft 25 carrying a flange 26 having grooves 27, 28 mating with dogs 29, 30 on cylinder block 4. The latter is rotatably mounted on a fixed shaft 3 having inlet and outlet bores 13, 14, for the working fluid.
Patent GB-1324122-A (GB)
Title: Closure assembly for a bulk container
IPC: B65D90/58
Filed: 1970-12-17
Abstract: 1324122 Sliding closures for hoppers LIAM O'CONNER & CO Ltd 17 Dec 1970 [22 Dec 1969] 60036/70 Heading B8S A closure assembly for a hopper comprises a plate 5, Figs. 1, 4, which is slidable on rods 9 supported in a framework 4 either manually or by a readily detachable hydraulic or pneumatic cylinder 18. The latter, in its supporting framework, is detached by removing bolts 16, 25, when the plate 5 may be moved manually either by a hand-hold 7 or by attaching a rod to lug 8, Fig. 4, after a door 12 has been raised to give access to the lug. Fixed brushes 27, arranged transversely to the plate 5, clean material from the plate as it slides.