baber/WOPTO huggingface dataset:
Patent GB-1225279-A (GB)
IPC: C07C2/38
Filed: 1968-03-12
Abstract: 1,225,279. Conjugated unsaturated esters. DOW CHEMICAL CO. 12 March, 1968 [22 March, 1967 (2)], No. 11883/68. Heading C2C. [Also in Division C5] Conjugated unsaturated esters are prepared by contacting a 1,2-alkadiene and a carboxylic acid in the presence of palladous perchlorate, nitrate, sulphate, fluoroborate, hexafluorophosphate, benzene sulphonate, tosylate or carboxylate having 1 to 8 carbon atoms. Acetylene or a 1-alkylacetylene may be included in the reaction mixture in which case the conjugate unsaturation comprises one double bond and one triple bond. The reaction is preferably carried out in the liquid phase at a temperature from 0 C. to 100 C. using the carboxylic acid as a solvent. Suitable carboxylic acids include acetic, propionic, butyric, succinic, hexanoic, adipic, benzoic, terephthalic and o-phthalic acids and other suitable solvents are water, methanol, n-butyl alcohol, p-dioxane and dimethyl sulphoxide. An alkali metal carboxylate and a polymerization inhibitor may also be present in the reaction mixture. Examples describe the preparation of 2,3-dimethylenetetramethylene diacetate and 3 - methyl - 2- methylene-3-butenyl acetate from allene and acetic acid and also the corresponding propionates, butyrates and benzoates; 2-acetoxymethylpent-1-ene-3-yne from a mixture of allene, methylacetylene and acetic acid; and 2-acetoxymethylhex-1-ene-3-yne from a mixture of allene, 1-butyne and acetic acid. The esters may be hydrolysed to the corresponding alcohols. Reference has been directed by the Comptroller to Specification 1,146,707.
Patent GB-1226291-A (GB)
IPC: G03B17/24
Filed: 1969-01-17
Abstract: 1,226,291. Selective printing. KOMBINAT PENTACON DRESDEN KAMERA-UND KINOWERKE VEB. 17 Jan., 1969, No. 2863/69. Heading B6F. A printer for marking processing data on the backs of printed photographs comprises a plurality of sliding-rod type bars 26 ... 37 each operable by a respective electromagnet 38 ... 49, the type bars and electromagnets being mounted on a slide 14 displaceable between two positions, in each of which positions impression of selected type bars is effected. The type bars are arranged in three rows of four type bars, each row having three type bars bearing the Roman numerals 1, 11, and 1111 respectively. The fourth type bar carries a minus sign in two rows 26 ... 29 and 30 ... 33 and a Roman numeral V in the third row 34 ... 37. The type bars are selected by push button switches (Fig. 5, not shown). With the slide 14 in a first position, a cam (99, Fig. 5) driven by a paper transport motor (not shown) operates a switch (100) to energize a relay (101) and connects a charged capacitor across the electromagnets selected for operation in the first position of the slide. A motor 56 is then operated to rotate a shaft 59 so that the slide 14 is shifted to its second position through an eccentric 60, lever 63a, 63b, link 65 and lever 66, the second position being displaced from the first by a distance equal to half the separation of the rows of type bars. A cam 61 then operates a switch 107 to energize the relay (101) again, and operate the electromagnets selected for the second position of the slide, through a second charged capacitor. Type-wheel machines; hammer impression; fixed printing matter.-In addition to the type bars 26 ... 37, the printer includes a row of type discs 85 and fixed printing matter 84. Impression is effected for the additional printing matter by a hammer 83 operated by an electromagnet 77.
Patent GB-1229736-A (GB)
IPC: C06B23/00
Filed: 1969-04-25
Abstract: 1,229,736. Incendiary and explosive compositions. IMPERIAL CHEMICAL INDUSTRIES Ltd. 1 April, 1970 [25 April, 1969], No. 21313/69. Heading C1D. An energetic constituent for incendiary or explosive compositions comprises liquid non- explosive organic nitrate thickened with nitrocellulose and ethyl or methyl centralite (diethyl or dimethyl diphenylurea). Liquid nitrates specified are n-propyl nitrate, iso-propyl nitrate, and amyl nitrate. The energetic constituent may form part of an extrudable blasting explosive, an aqueous slurry epxlosive, or a powdered explosive. Other ingredients of the explosive compositions are ammonium nitrate, sodium nitrate, water, granular aluminium, guar gum, and zinc chromate.
Patent GB-1231469-A (GB)
IPC: B60L5/24
Filed: 1968-05-16
Abstract: 1,231,469. Pantographs for electrically propelled railway vehicles. VSESOJUZNY ORDENA TRUDOVOGO KRASNOGO ZNAMENI NAUCHNO - ISSLEDOVATELSKY INSTITUT ZHELEZNODOROZHNOGO TRANSPORTA. 16 May, 1968, No. 23246/68. Heading B7L. The contact shoe 3 is carried by a pair of frames 1 secured to shafts 2 acted on by levers connected to a tension spring 4 so that the frames 1 are biased to a raised position, the shafts 2 being pivoted (as shown) to a platform 13 supported by a scissors lever system 10, or directly to the levers of a parallelogram or polygon lever system, Figs. 2 and 3 (not shown), the levers 10 being pivoted to the platform 13 and to an insulated base and to the piston-rod of a pneumatic lifting cylinder 16, air being supplied to the cylinder 16 (so as to raise the platform 13) via a flexible hose 25, a slide valve 17, and a flexible hose 22, when the frames are raised so much that the member 21 of the slide valve 17 is forced into the valve 17 clear of the hose 25. The cylinder 16 is vented to the atmosphere (so as to lower the platform 13) when the frames are lowered so much that the member 21 is pulled out of the valve 17 clear of the hose 25. When the vehicle is being connected to or disconnected from an overhead conductor system, the frames 1 are raised and lowered by a pneumatic cylinder 5 and spring 6 acting on a shaft 2.
Patent GB-1233785-A (GB)
IPC: C08G8/00
Filed: 1968-09-20
Abstract: 1,233,785. Phenolic resin production. BADISCHE ANILIN- & SODA-FABRIK A.G. 20 Sept., 1968 [22 Sept., 1967], No.44777/68. Heading C3R. A continuous process for producing a phenolic resin comprises (a) introducing water, a phenol, an aldehyde and a catalyst into a first reaction zone at a temperature 50-90‹ C. below the temperature prevailing in the zone and at a volume per hour equal to 5 to 12 times the volume of the zone, (b) maintaining the mixture in this zone at its b.p., (c) removing mixture from this zone at a rate equivalent to its rate of introduction and transferring it to a second zone having a volume equal to 3 to 6 times the volume of the first zone and consisting of at least one tubular reactor having a length 30 to 100 times its width, (d) maintaining the temperature in this zone at 90- 125‹ C., (e) transferring reaction mixture from this zone to a third zone having a volume equal to 2 to 3 times that of the second zone, and (f) maintaining the temperature in this zone at 90-125‹ C. The phenol may be phenol and the aldehyde : formaldehyde in a mole ratio between 1 : 0À8 and 1 : 2À2 and together constituting 45-55% by weight of the reaction mixture. For novolak preparation the catalyst is an acid, for resoles a base, e.g. NaOH. The catalyst may constitute 0À5-10% by weight of the reaction mixture but only 20-50% of this may be added initially the remainder being added to the second and/or third zones. The reaction mixture may also include an alcohol. In a particular embodiment 1, 2 and 3 are supply lines for phenol, formaldehyde and water, 7, 8 and 9 are supply lines for catalyst, 4 and 6 are metering pumps, 10 and 17 are condensers, 5 is the first reaction zone, 12 is the second and 14, 15 and 16 are together the third.
Patent GB-1238615-A (GB)
IPC: B23K7/00
Filed: 1969-12-23
Abstract: 1,238,615. Flame cutting. MESSER GRIESHEIM G.m.b.H. 23 Dec., 1969 [11 Feb., 1969], No. 62630/69. Heading B3V. A hand flame cutting machine comprises an elongated handle 10 having disposed at one end a guide device 11 in which a carriage mounting a torch 12, is reciprocable. The torch carriage is connected to a steel rope 25 which is connected at one end to a spring 24 attached to a cylinder 22 inside the tubular handle 10 and at the other end to a piston rod 26 of a piston 23. The carriage is moved in direction 37 to its starting position by closing a valve 28 and moving by a lever 31, the piston 23 downwards in the cylinder 22 causing the spring 24 to be tensioned. During this movement, the liquid below the piston 23 flows through a one-way valve in the piston 23. The torch carriage is moved back by the spring 24 to carry out a working stroke by opening the valve 28. The carriage may alternatively be driven by an electric motor. The guide device 11  may be pivotably connected to the handle 10.
Patent GB-1250661-A (GB)
IPC: B21J7/14
Filed: 1968-09-18
Abstract: 1,250,661. Forging. DAVY & UNITED ENG. CO. Ltd. 16 Sept., 1969 [18 Sept., 1968], No. 44376/68. Heading B3H. [Also in Divisions B4-B5] A forging machine comprises a set of tools 11 around a workpiece 22 and each operated by a toggle linkage 14, 15 operated in unison with the other linkages and having an anchor block 19 which is movable to vary the stroke end position. The linkages are operated by a ring 25 with radially slidable blocks B on which the centre pivot 16 of each linkage is mounted. The ring is rotated by a double-acting hydraulic unit 28 or by eccentrics and levers. The anchor blocks 29 may be preloaded so that they move outwards upon overload. Several sets of tools with associated operating rings may be mounted in line to reduce a workpiece in stages.
Patent GB-1250721-A (GB)
IPC: B29C45/26
Filed: 1969-01-15
Abstract: 1,250,721. Injection mould closing devices. K. AOKI. 15 Jan., 1969 [20 Jan., 1968; 24 Jan., 1968], No. 2283/69. Heading B5A. In an injection moulding machine comprising mould parts 10, 11, wherein initial closing of the mould is effected by fluid pressure means 2 through toggle arms 3, and final closing is effected by second fluid pressure means 4, detector means are provided to prevent final closure if any obstructing matter is present between the mould parts. Detector means may also be provided to detect obstructing matter between the mould part 11 and a sprue runner plate 9 which can be separated by fluid pressure cylinders 13. The detector means comprises switches 12<SP>11</SP> operated by push-rods 12<SP>1</SP>, the switches being arranged in a circuit so that if mould part 11 and plate 9 come together, then mechanism 2 can operate, and if this permits mould parts 10, 11 to be brought together then mechanism 4 can operate. If obstructions are present the switches do not close and a warning lamp and buzzer operate. Knock-out pins 22 on a plate 23 are operated by a ram (24), Fig. 2 (not shown).
Patent GB-1251394-A (GB)
IPC: H02M9/04
Filed: 1968-10-09
Abstract: 1,251,394. Ignition systems. HONEYWELL Inc. Oct. 9, 1968 [Oct. 25, 1967], No. 47935/68. Headings F1B. An ignition system comprises a step-up ignition transformer having a primary winding 12 and a secondary winding 11, a pair of terminals connected in circuit with the secondary winding and adapted to be connected to ignition spark gap means 15, an impedance 40 connected between the terminals to complete a circuit through the secondary winding and ignition pulse generating means 20, 26 having an input to initiate operation thereof and having a high voltage output connected to the primary winding. Checking pulse generating means 21, 24 has a low voltage output connected to produce current flow through the circuit including the secondary winding and the impedance. Current responsive means 30 is responsive to the current flow and connected to control the input to initiate operation of the ignition pulse generating means. A circuit discontinuity such as the secondary winding of the ignition transformer may well be of the type which would at the higher ignition pulse voltage allow a spark to exist at the discontinuity and then the valve 16 would be energized even if the electrodes 15 are shorted. In the system of the invention an output exists at the secondary winding of the transformer 31, as a result of the low voltage checking current pulse, only when circuit continuity exists.
Patent GB-1251797-A (GB)
IPC: H04N1/60
Filed: 1967-11-06
Abstract: 1,251,797. Copying by scanning. KODAK Ltd. 31 Oct., 1968 [6 Nov., 1967], No. 50288/67. Heading H4F. To photographically reproduce a coloured original e.g. a film transparency 5, the light from a flying spot scanner 1, transmitted by (or reflected from) the original is analysed into red, green and blue signals by means of photomultipliers 7, 8 and 9 and associated colour filters arranged on a light collector 6 (integrating sphere). The red, green and blue signals are logarithmically amplified in respective logarithmic amplifiers, modified in a matrixing circuit to produce colour corrected signals, added to a constant signal, and each summed modified signal and constant signal is adjusted in amplitude in accordance with a factor to suit a display device i.e. gamma correction. With this arrangement of " adjusting circuits ", antilog amplifiers are not required. As shown, the display device comprises a C.R.T. 10 arranged to scan photo-sensitive material 12 in synchronism with the spot of light illuminating the original, the modified summed and adjusted colour signals modulating sequentially the C.R.T. 10 by means of switch 16 while corresponding colour filters 14 are sequentially positioned in the exposing light path with the aid of shutter 15. Switch 16 may have a fourth position in which a suitable mixture of the signals from the photomultipliers is passed to a circuit whose function is to determine the optimum exposure levels required for each original, in which case the switch would start in the fourth position with filter 14 comprising an opaque disc. Alternatively the photo-sensitive material may be exposed by light from three display devices simultaneously, each display device having its own colour filter and being fed with a corresponding one of the modified, summed and adjusted signals. Instead of being a transparency the coloured original may comprise a reflection print, or the arrangement may be used to produce transparencies or prints from negative stock.
Patent GB-1265372-A (GB)
IPC: C07C67/00
Filed: 1969-04-23
Abstract: 1,265,372. Solvent transference of hydrogen peroxide. PETROCARBEN DEVELOPMENTS Ltd. 23 April, 1970 [23 April, 1969], No. 20824/69. Heading C1A. Hydrogen peroxide is transferred from one solvent to another by feeding the hydrogen peroxide dissolved in at least one first solvent into the upper portion of a fractionation zone and introducing into the lower portion of the zone at least one second, less volatile solvent capable of being volatilized in the zone without appreciable decomposition of the hydrogen peroxide, and distilling off the first solvent under conditions such that it leaves the zone with substantially unchanged constitution while the hydrogen peroxide becomes dissolved in the second solvent and is withdrawn in from the bottom of the zone. The first solvent may be isopropanol, or a mixture such as isopropanol and acetone or an azeotrope comprising isopropanol and the second solvent, the azeotrope being of lower boiling point than the pure second solvent. The second solvent may be an ester having the general formula R.COOR<SP>1</SP> where R and R<SP>1</SP> may be alkyl radicals with up to 5 carbon atoms or alkyl radicals with up to 5 carbon atoms and substituted with at least one electrophilic group. Suitable esters include npropyl acetate and n-pentyl acetate. Specifications 1,216,997, 1,237,884, 1,237,885 are referred to.
Patent GB-1265882-A (GB)
IPC: C07D333/24
Filed: 1969-05-29
Abstract: 1,265,882. Benzofuran and benzothiophan derivatives. J. R. GEIGY A.G. 29 May, 1969 [30 May, 1968], No. 27281/69. Heading C2C. Novel compounds I: in which R is C 2-7  alkyl, X is O or S, Y 1  is H, CH 3  or CH 3 O, Y 2  is H or CH 3  and Z 1  and Z 2  are H, F, Cl, Br, CH 3 , C 2 H 5 , CH 3 0, or C 2 H 5 O and their salts with bases are prepared by reaction of a compound II: with a halide R-CO-Q, Q being halo, or an anhydride (R-CO) 2 O, followed where desired by salt formation. Intermediates isolated are the compounds II prepared by reduction of the corresponding 2,3- double-bonded compound with sodium amalgam; 6 - chloro - 2 - (2,3 - epoxypropyl) - phenol, prepared from 2-allyl-6-chlorophenol and peracetic acid; 2,3 - dihydro - 2 - hydroxymethyl- 7-chlorobenzofuran, prepared by heating the above epoxy compound; 2,3-dihydro-7-chlorobenzofuran-2-carboxylic acid prepared by oxidation of the 2-hydroxymethyl compound; a mixture of 4- and 6-chloro-2,3-dihydro-2-hydroxymethyl-benzofuran, prepared similarly to the above hydroxymethyl derivative; 2,3- dihydro - 6 - chloro - benzofuran - 2 - carboxylic acid, prepared by oxidation of the 2-hydroxymethyl compound; (X) 7, 8-dimethyl-coumarin, prepared from 2,3-dimethylphenol and malic acid; (Y) 6,7-dimethyl-benzofuran-2.carboxylic acid, prepared by reaction of the coumarin derivative with Br 2  and alcoholic potassium hydroxide; 7 - ethyl coumarin; 6 - ethyl - benzofuran - 2 - carboxylic acid; 7 - chloro - 8 - methylcoumarin and 6 - chloro - 7 - methyl - benzofuran- 2-carboxylic acid, the latter four compounds being prepared similarly to (X) and (Y) above; 6 - fluoro - benzofuran - 2 - carboxylic acid, prepared by reacting p -fluoro -salicylaldehyde with bromomalonic acid diethyl ester, followed by hydrolysis; (P) 2-thioxo-5-(2,4-dichlorobenzyl. idene)-4-thiazolidinone, prepared from rhodanine and 2,4-diohlorobenzaldehyde; 2,4-dichloro-α-mercapto-cinnamic acid, prepared from the above thiazolidinone by reaction with cone. HCl; (Q) 6-chloro-benzo[b]thiophene-2- carboxylic acid, prepared from the above cinnamic acid by cyclization; 2-thioxo.5.(2,6 dichlorobenzylidene)-4.thiazolidinone; 2,3 - dihydro - 4 - chloro - benzo[b]thiophene - 2 - carboxylic acid, the latter two being prepared similarly to (P) and (Q) above; 6-ethoxy-benzo[b]thiophene, prepared by reduction of the corresponding 3-one with NaBH 4 ; and 6-ethoxy-benzo[b] thiophene-2-carboxylic acid, prepared from the last-named intermediate by reaction with butyl lithium and solid CO 2 . Pharmaceutical compositions comprise a compound I together with a suitable carrier, are administered orally, rectally or parenterally, and have saluretic, antitussive and diuretic activity.
Patent GB-1267195-A (GB)
IPC: D01H4/00
Filed: 1968-03-14
Abstract: 1,267,195. Open end spinning. T.M.M. (RESEARCH) Ltd. 14 March, 1969 [14 March, 1968], No. 12440/68. Heading DID. An open end spinning device comprises a rotatable body 11 having passage therethrough having an inlet end 13 an outlet end 14 and a fibre collecting surface 21 facing radially inwards and means, such as an opening 18, to induce an air stream along the passage to assist in bringing fibres fed into inlet end 13 to the collecting surface 21 where the fibres are built onto the seed yarn 22. The tube is rotated by a belt 17.  In Figs. 2 and 3 not shown a semi-circular fibre collecting surface (40) is formed in a rotatable body made by of two plates (36, 38) and stationary tubes (41, 42) introduce fibres into and lead yarn from the collecting surface. A leaf spring may be arranged within the body to grip the yarn end to prevent twist running off at the end. A ball or roller may be arranged to press centrifugally against the yarn on the collecting surface to prevent the twist running off. A false twist arrangement may be provided at the exit of the spinning device to operate in the same or opposite direction to the device.
Patent GB-1288802-A (GB)
IPC: F26B13/18
Filed: 1969-05-19
Abstract: 1288802 Treating textiles with gaseous fluids IMPERIAL CHEMICAL INDUSTRIES Ltd 4 May 1970 [19 May 1969] 25429/69 Heading D1L A sheet structure or web is treated with a gaseous fluid under low, controlled mechanical pressures (between 3.5 and 140gm/cm<SP>2</SP>) by passing it between a non-deformable impervious movable member and a conformable, porous member, both of which move at the surface speed of the web, the porous member forming, for at least part of the distance over which it and the non-deformable member both contact the web, a wall of a chamber in which the treatment fluid is maintained. In the embodiment described the non-deformable member is a roller 2, preferably of stainless steel, heated internally if heated treatment fluid is utilised, and the porous, conformable member is an endless conveyor belt 6, of a woven fabric such as canvas or a fabric of metal wire, preferably phosphor-bronze wire, the web to be treated (not shown) passing between these members. The treatment fluid is maintained in trough 9, either by being supplied thereto via a pipe 10 in which case condensate may be removed from pipe 18, or the trough may contain a liquid, the vapour from which is the treatment fluid (in which case the liquid may be recirculated). In its passage the endless conveyor belt 6 passes under a roller (5, Fig. 1) on which weights may be hung to tension the belt to any required degree.
Patent GB-1295449-A (GB)
IPC: H03B21/02
Filed: 1969-12-16
Abstract: 1295449 Frequency synthesizer SANDERS ASSOCIATES Inc 16 Dec 1969 [16 Dec 1968] 61376/69 Headings G4D D7X D6Y D6C1 and D6C2 A frequency synthesizer comprises an oscillator 26 coupled to a counter 24 into which selected number is loaded from the register 20, the counter being arranged to emit an output pulse when it reaches a predetermined count and the output pulse being applied to the gates 22 to reset the counter to the number loaded in the register, and a signal purifying network. A pulse train is emitted by the counter 24 of a frequency equal to a submultiple of the oscillator frequency depending on the difference between the number loaded on the register 20 and the count at which the output pulse is emitted. In an embodiment two sections are used 10 and 12, one being adapted to vary the output frequency over a large range (789 KHz in 138 steps) and the other over a smaller range (12À8 KHz in 129 steps) to provide coarse and fine adjustment. In the fine adjustment section 10 the purifying network 32 comprises flip-flops 36 and 44 to which the output pulses are gated according to whether their frequency lies within the upper or lower halves of the range provided by the synthesizer section. The output from the flip-flop, which is a substantially squarewave, is passed via filter 38 to a mixer 40 where it is mixed with the output from oscillator 52. A band pass filter passes the difference frequency to the mixer 14 where it is mixed with the output from the other section. The coarse adjustment section 12 is similar to the fine adjustment section except in storage capacity and frequency response characteristics and includes a multiplier 70 to provide large frequency increments. In a modification, Fig. 2 (not shown), the output of the counter 24 is used to trigger a one shot multi-vibrator which remains in its unstable state for six pulses from the oscillator 26 and emits a "RELOAD" signal on returning to its stable state. The multi-vibrator enables a flip-flop which is triggered by the succeeding oscillator pulse. The flip-flop output is applied to the filter 38. The flip-flop also triggers a further one-shot device which remains in its unstable state for ten oscillator pulses. A pulse from the further one shot device starts a counter which is pre-set by the de-coder 35 to one of two counts depending on whether the upper or lower half of the synthesizer range in being used. The counter is driven from the oscillator 26 and emits a pulse when it has been incremented to a predetermined count. This output pulse enables the flip-flop which is then reset by the succeeding oscillator pulse and the pulse to the filter 38 ends. The cycle repeats for  each output from the counter 24 and pulses having a frequency dependent length are delivered to the filter 38 as the output of the synthesizer. The numbers are loaded into the registers 20, 20a by a computer and the synthesizer may be used to sweep a band or bands of frequencies in a predetermined manner, e.g. to control the local oscillator frequency of an unmanned receiver.