baber/WOPTO huggingface dataset:
Patent GB-560669-A (GB)
Title: Improvements in or relating to the production of keto-alcohols
IPC: C07C45/72
Filed: 1942-08-20
Abstract: In the production of keto-alcohols by reacting a ketone with an aldehyde under mildly alkaline conditions, the reaction is effected at at least 40 DEG  C. and a molar excess of the ketone of at least 5 : 1 is employed.  When water is present the alkaline agent may be sodium hydroxide, an alkali carbonate, sodium sulphide, sulphite or bisulphite or a tertiary amine.  Sodium bisulphite though acid in itself yields an alkaline reaction with formaldehyde.  When an organic diluent is present the alkaline agent may be sodium ethoxide. When a diol is required the keto-alcohol need not be isolated, but may be reduced with hydrogen and a nickel catalyst in the reaction mixture.  Examples describe the production of 3-ketobutanol from acetone and formaldehyde or paraformaldehyde and of 2-methyl-3-ketobutanol from methyl ethyl ketone and formaldehyde, and the production of butylene glycol by hydrogenating the reaction product containing 3-keto-butanol with Raney nickel.
Patent GB-907395-A (GB)
Title: Fountain-pens
IPC: B43K5/00
Filed: 1960-04-04
Abstract: 907,395. Reservoir pens. PLATINUM INDUSTRY CO. Ltd. April 4, 1960 [Oct. 14, 1959], No. 11888/60. Class 146 (3). A fountain pen has a nib-holding portion 9 and a disposable ink cartridge fitted to the rear thereof, the cartridge comprising a hollow, substantially cylindrical body 1, a sleeve 2 of resilient material fitted to the front end of the body and having a bore concentric with the axis of the body and initially closed by a spherical plug 4, and a rear stopper 12 of resilient material fitted to the rear end of the body, the sleeve and stopper having each a deep annular groove formed therein which tightly receives the corresponding end wall of the body. The parts 2, 12 may be made of polyethylene or rubber. When the cartridge is to be mounted in the pen a nozzle 8 on the rear end of the nibholding portion 9 and which contains an annular ink-feed channel, is thrust into the bore of the member 2, displacing the ball 4 into the interior of the cartridge, and is retained frictionally therein.
Patent GB-527806-A (GB)
Title: Improvements in apparatus adapted to be supplied by a vibrator from a direct current supply
IPC: H02M7/62
Filed: 1939-04-20
Abstract: 527,806. Commutator switching arrangements. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. April 20, 1939, No. 11955. Convention date, April 23, 1938. [Class 38 (ii)] A commutator switching arrangement for deriving A.C. from D.C. comprising a vibratory switch and transformer has a condenser and resistance of particular values connected in series across the switch contacts. The operating coil 13, Fig. 1, is also connected across the switch contact 11 through a resistance 15. A high-frequency filter arrangement comprising a resistance 18 and condenser 19 is associated with the switch contacts. This arrangement enables the A.C. apparatus 2 with its associated transformer 3 to be converted to D.C. use by switching involving one transformer lead only. The transformer 3 is preferably so dimensioned that it becomes periodically highly saturated on D.C. working so that when the switch is open and the decaying magnetic field charges the condenser 16 through resistances 17 it causes a reversed E.M.F. in the primary of the transformer at least equal to the applied D.C. voltage. In order to reduce the excitation current of the operating coil 13, a condenser 14 is connected in parallel with it, the value of the condenser being such that the oscillatory circuit thus formed corresponds to the natural frequency of the vibrating member 10.
Patent GB-960401-A (GB)
Title: Improvements relating to grills
Inventor: OATLEY ARTHUR FREDERICK
IPC: A47J37/04
Filed: 1959-04-09
Abstract: 960,401. Spits. OATLEY TECHNICAL DEVELOPMENTS Ltd. July 4, 1960 [April 9, 1959], No. 11962/59. Heading A4D. A spit 12 is mounted beneath a horizontal grill with one end mounted in a bearer 26 and the other end engaged by a drive coupling 18 from a motor 11 mounted in a carrier 13, the arrangement being such that the distance of the spit from the grill is adjustable. As shown, the grill cover 10 and the grill 7 are swung downwards and upwards respectively to their horizontal "in use" positions. The e.g. electric, spit motor 11 is pivoted in carrier 13 which is detachably secured to a flange 14 on the grill. The motor is held in the desired position by a spring biased plunger with an enlarged portion 22 which engages widened portions 20 of an arcuate slot 19 in one limb 16 of carrier 13. The end of the spit 12 passes through a corresponding arcuate slot 25 in the other limb 15 of carrier 13, to engage the coupling 18. The bearing plate 26 is detachably secured to a flange 27 depending from the grill and has rests 28 for the other end of the spit. In a modification, an arcuate plate may be provided on the carrier having a straight slot instead of slot 19 and in either case clamping screws may be used instead of a plunger. In a further modification, Fig. 3 (not shown) the motor is adjustable by sliding vertically in a carrier mounted on the cooker or grill unit. Otherwise, the motor and spit may be mounted on a drip pan 47 and be adjustable by sliding vertically or by being pivoted, Figs. 4 or 5 (not shown). The motor may have projections 52, Fig. 6, with hooks which engage any of a series of pairs of slots in plate 51. Alternatively, plate 51 may have hooks which engage slots in projections 52. The motor and spit may be non-adjustably mounted on the drip pan which can be mounted at different levels on the grill unit or cooker or may have an adjustable undercarriage.
Patent GB-871324-A (GB)
Title: Improvements in and relating to apparatus for making and dispensing tea, coffee and like infusions
Inventor: LEICESTER JOHN
IPC: A47J31/40
Filed: 1959-04-09
Abstract: 871,324. Filters. AVIMO Ltd. Feb. 26, 1960. [April 9, 1959], No, .11983/59: Class 46. [Also in. Group VI] Apparatus for making tea, coffee and like infusions comprises an infusion vessel 1 from which the infusion is dispensed through a filter strip which is drawn from a supply 10 so that a fresh filter is used for each infusion. As shown, vessel 1 comprises a cylindrical hollow part 6 with a sealing ring 7 which engages a fixed base 2 with a spout 3 having a restricted orifice plate 5. Boiling water is supplied to vessel 1 from pipe 8 through a rose 9. A roll 10 of filter material is mounted at one side and the strip is guided in a path 11 passing between base 2 and part 6 and being fed along by rolls 13, 14 when these parts are separated. Roll 14 is driven and is carried on a pivoted spring-biased bracket 15 mounted on a shaft 32. Pins 18 on part 6 pass through slots 19 in a hollow cylindrical guide structure 20 and engage slots 17 in spring-biased arms 16 connected by a yoke 21 and pivoted about the same axis as bracket 15. Arms 16 are operated by cams 22 carried on a shaft 23 which also carries cams 24 to operate bracket 15. An electric motor 28, through gears, drives shaft 23 which through further gears 30a, 31 and 33 drives shaft 15 and roll 14. Roll 14 has a reduced centre portion so that it engages only the edges of the filter. Between the supply roll and the infusion vessel, the filter strip is led over a table 34 above which is a hopper 35 through which tea and sugar from supplies 36, 37 can be deposited on the filter strip. A control mechanism is provided to control the operation which commences with infusion vessel 6 raised and causes the correct amount of tea and sugar to be deposited on to the filter strip. Driving motor 28 is then started which drives the feed rolls, already in engagement, drawing the filter strip forward beneath the infusion vessel. Cams 24 then separate roll 14 from roll 13, stopping the feed, but continued rotation of cams 22 lowers vessel 6 on to base 2 where it is held and the appropriate amount of hot water is delivered through rose 9.
Patent GB-1352981-A (GB)
Title: Gyroscopic devices
IPC: G01C19/02
Filed: 1972-05-15
Abstract: 1352981 Gyroscopes SPERRY RAND CORP 15 March 1972 [25 March 1971] 12093/72 Heading G1C In a gyroscopic device comprising a rotor 4 adapted to spin about an axis fixed relative to a housing 1, the rotor 4 comprises an inertial rim 10 supported by a pair of opposed shell-like members 14, 15 which are separated by a cylindrical member 16 co-axial with the spin axis. The rotor may be constructed entirely of steel or as shown may comprise a steel rim 10 attached to an aluminium rim 11 which is carried by aluminium members 14, 15 and 16 joined to hubs 18, the hubs 18 providing supports for spindles 20, 21 which form part of a bearing arrangement 2 for rotatably supporting the rotor 4 in the housing 1. The housing 1 which may be evacuated may comprise fluted shells 5 and 6 interconnected by peripheral rings 8. The rotor may be driven by an electric motor 3 and provided with pick-offs 3'. The rigid connections between different elements of the gyroscopic device may be formed by weld joints.
Patent GB-169195-A (GB)
Title: Improvements in jolt machines for ironfounders
IPC: B22C15/10
Filed: 1921-02-02
Abstract: 169,195. Oldfield, T., and Oldfield & Schofield Co., Ltd. Feb. 2, 1921. Moulding-machines. - Jar moulding-machines have improved cushioning means and clutches so that two machines may be coupled when dealing with large work. The table A is carried by a ram B which is cushioned on falling by air in a cavity D. When the table is lifted by a cam T a spring valve F admits air automatically to the cavity D from a reservoir H within the ram. The valve is positively opened by an adjustable pin L, lever J, and link K, when the table is raised somewhat, to admit air freely on the upstroke and to regulate the effect of the cushion. The cam shaft S has sliding and fixed clutches 1, 2 adapted to engage corresponding clutches on another machine when their cams are in the same angular position. The shafts S are driven through one-way clutches W by electric motors. shafts Y, and worm gear V, the switch of the second motor being closed bv the movement of the clutch-operating mechanism 3. The space N above the usual leather buffers is connected by a duct R with the chamber H.
Patent GB-1249220-A (GB)
Title: A process for producing elastic foam moulded articles
IPC: B29C44/50
Filed: 1969-03-07
Abstract: 1,249,220. Extruding elastic foam. ASAHI KASEI KOGYO K.K. 7 March, 1969 [9 March, 1968], No. 12199/69. Heading B5A. [Also in Division C3] An elastic foam moulded article is made by extruding under pressure and at elevated temperature through holes a fluid mixture obtained by mixing (1) 100 parts by weight of a thermoplastic elastomeric block copolymer represented by the formula or or wherein B represents a 1,3-butadiene polymer block, S represents a styrene polymer block, n is 2 to 10 and m is 1 to 10, the copolymer having a molecular weight of 10,000 to 500,000 and a styrene content of 10 to 70% by weight, or a mixture of such block copolymers, (2) 25 to 300 parts by weight of polystyrene, and (3) 0À1 to 100 parts by weight of a foaming agent which is an organic compound having a boiling point lower than the softening temperature of the polystyrene, cutting the resultant extruded mixture into segments while the same is still soft and not yet completely expanded, allowing the resultant segments to foam and expand, cooling the foamed and expanded segments to form granules, filling the granules into a closable but not air-tight mould and heating the granules therein to a temperature at which they soften and further foam and expand. The mixer used to form the mixture may be connected to one end of a screw type extruder having a die with fine holes at the other end with a rotatory knife spaced not more than 1 mm. from the face of the die.
Patent GB-461597-A (GB)
Title: Improvements in and relating to processes for the manufacture of caustic alkalies
IPC: C01D1/24
Filed: 1936-04-29
Abstract: Alkali metal hydroxides are obtained by making a mash of an alkali metal chloride such as rock salt with a quantity of water insufficient to dissolve it, treating the mash with a concentrated non-gaseous hydrofluoric acid containing more than 40 per cent HF, and treating the alkali metal fluoride obtained with lime to obtain caustic alkali and calcium fluoride.  Hydrochloric acid is also obtained.  Excess of hydrofluoric acid is preferably employed.  The calcium fluoride may be treated with sulphuric acid to obtain hydrofluoric acid for use in the process.
Patent GB-744069-A (GB)
Title: Improvements in the production of aliphatic carboxylic acids, esters and anhydrides
IPC: B01J27/06
Filed: 1953-05-04
Abstract: Aliphatic carboxylic acids, esters and anhydrides are obtained by the action of carbon monoxide on an ester of a fatty acid containing up to 4 carbon atoms with a saturated aliphatic alcohol containing up to 4 carbon atoms, at elevated temperatures and under superatmospheric pressure in the presence of a cobalt compound which is a complex compound of a cobalt bromide or iodide with a quaternary ammonium and/or phosphonium halide of the general formula (A4N)2CoX4 or (A4P)2CoX4 or [(A4N) (A4P)]CoX4, in which A stands for a hydrocarbon radical, in particular an alkyl radical containing between 1 and 4 carbon atoms, or some of the A's together with the nitrogen atom form a heterocyclic ring of a saturated or aromatic structure while the other valencies of the quaternary nitrogen atom are satisfied by a hydrocarbon radical; and X is a halide ion, in particular a bromide or iodide ion.  The carbon monoxide may be used pure or mixed with other gases such as nitrogen, methane, carbon dioxide and/or hydrogen.  The reaction may be carried out continuously or otherwise. The activity of the catalyst may be increased by the addition of an organic nitrogen base such as pyridine, and a solvent such as a hydrocarbon, ester, ether, N-alkyl lactam, carboxylic acid or the reaction product may be used.  In the absence of water a carboxylic acid anhydride is obtained.  If water is present carboxylic acids and esters as by-products are obtained.  In the examples (a) methyl acetate is treated with a mixture of carbon monoxide and hydrogen in the presence of N-methyl pyrrolidone and a catalyst as defined above to give acetic anhydride; (b) methyl acetate is treated with a mixture of carbon monoxide and hydrogen in the presence of glacial acetic acid and a catalyst to give acetic anhydride; and (c) ethyl propionate is treated with a mixture of carbon monoxide and hydrogen in the presence of propionic acid and a catalyst to give propionic anhydride.
Patent GB-576770-A (GB)
Title: Improvements relating to gas meters
IPC: G01F3/22
Filed: 1944-06-29
Abstract: 576,770. Gas meters. ROBINSON, V. June 29, 1944, No. 12390. [Class 54] The valve covers are enlarged between the lands seating on to the valve grid to secure unimpeded flow. The cover a is hollowed out at band c between the lands d, and the cover lands d are broad relative to the seating lands e. The end walls of the valve covers may be similarly hollowed out and the valve grid ports f open out widely as shown.
Patent GB-468724-A (GB)
Title: Common wave radio transmitter system
IPC: H04H20/67
Filed: 1936-05-01
Abstract: 468,724. Automatic control systems. BERRY, R. J. (Lorenz Akt.-Ges., C.) May 1, 1936, No. 12461. [Class 38 (iv)] Oscillation frequency.-Relates to common wave radio transmitters of the type in which a self excited secondary transmitter is used and is synchronized with the main transmitter by means of a valve bridge G1, G2 to which the main and secondary frequencies fm and ft are applied, the output of this bridge, which is proportional to the phase deviation, being used for correcting the secondary transmitter and consists in using an adjusting device F which operates without restoring force and is so arranged that at the completion of a regulating movement proportional to the deviation a slight return movement is imparted to the system. This return movement may be obtained by providing the adjusting device F with fluid damping. In a modification, two adjusting devices are provided, one for coarse and one for fine adjustment.
Patent GB-129483-A (GB)
Title: Improvements in, and relating to Miners' Picks.
Inventor: HOPKINS DAVID
IPC: B25G3/02
Filed: 1918-07-31
Abstract: 129,483. Hopkins, D. July 31, 1918. Fixing by T-sockets with clamping-devices and key-wedges.-A T-socket for miners' picks is in two parts divided transversely of the blade, the upper ends being formed with openings for the blade and securing-wedge, and the lower parts being recessed to fit the end of the shaft on which they are clamped by a band and set-screw. As shown, the two parts a, bare formed with openings o for the pick blade and wedge g, while the lower portions are recessed to embrace the shaft or helve c and are clamped upon it by a ring e and set-screw f. A wedge d in the recess j is engaged by the securing-wedge g and forces the taper helve down the recesses to tighten it therein. A pin h in the wedge d projects at each end into the space between the two parts a, b.
Patent GB-567444-A (GB)
Title: Improvements connected with sliders for masking frames used in photographic printing
IPC: G03B27/58
Filed: 1943-08-03
Abstract: 567,444. Photographic enlarging apparatus. JACOBS, H. Aug. 3, 1943, No. 12501. [Class 98 (i)] A slider for carrying a masking strip, e.g. in photographic enlarging apparatus, is slidable on a rail forming part of the masking frame and is provided with a spring strip bearing on a bounding face of the rail when the slider is applied thereto to retain the slider in its set position, the strip being released from the rail to permit of adjustment of the slider by pressing together the ends of the spring strip extending from the slider. As shown, the slider comprises a metal block 2 having a channel 3 engaging the rail 1. A masking strip 5 is secured to the block 2 by screws passing through threaded holes 4. A spring strip 8 humped near each end and having projections 11 is placed in the channel 3 so that the projection 9 on the strip enters the depression 6 in the channel. In use, the humps 10 bear against the rail 1 to retain the slider in set position, and the latter is freed for adjustment by pressing together the ends 11. The rails 1 may be provided with scales. The rails 1 may be circular and the channel 3 semi-circular.
Patent GB-219760-A (GB)
Title: Improvements in and relating to apparatus for lock forming sheet metal
IPC: B21D5/14
Filed: 1923-05-10
Abstract: 219,760. Duxbury, J. A., and Butterfield, Ltd., W. P. May 10, 1923. Angular bending.-A device for preparing sheet metal for lockseaming comprises a member A mounted eccentrically on a shaft A<1> and carrying a flat plate G<1> forming with the member a gap G. In operation the edge of the sheet metal is placed in the gap and the member A is oscillated so as to bring the plate G<1> into contact with an inclined portion T<1> of a table. The gap may be made adjustable.
Patent GB-550221-A (GB)
Title: Plant for producing powdered material
IPC: B02C21/00
Filed: 1942-03-18
Abstract: 550,221. Cyclone separators. INTERNATIONAL COMBUSTION, Ltd., and HARLOW, W. F. March 18, 1942, No. 12516. Divided out of 549,199. [Class 23] Entrained powdered material delivered from a combined mill and separator a passes to a grading device b which comprises upper and lower cyclones, the upper one receiving the entrained materials and the lower one receiving air from the pipe h. The separated heavy particles are returned to the mill by hopper f and the finer particles, still entrained, are passed to a separator c and collected. The entraining air then passes to a fan d leading to the mill and the closed air cycle is completed. Any excess of air in the cycle escapes through a bag filter e. The grading device b may be as described in Specification 549,199.
Patent GB-672454-A (GB)
Title: Direct dyeing azo dyestuffs and manufacture thereof
IPC: C09B43/16
Filed: 1950-05-18
Abstract: 3-Aminopyrene is sulphonated to give a monosulphonic acid (8- or 10-) which on further treatment with sulphuric acid yields a mixture of 5 : 8- and 5 : 10-disulphonic acids.  Alternatively, baking the acid sulphate of 3-aminopyrene gives the 4-sulphonic acid, which yields a disulphonic acid by the action of sulphuric p  acid.ALSO:The invention comprises disazo dyestuffs of the formula R1-N=N-R2-NH-X-HN-R4-N=N-R3 where R1 is an aromatic residue, R2 and R4 are benzene nuclei with the NH and azo linkages pto one another, R3 is a sulphonated pyrene residue attached in the 3-position and X is carbonyl, triazinyl or 2 : 4-quinazolinyl.  These are made by coupling a diazotized 3-aminopyrenesulphonic acid with aniline or a p-coupling substituted aniline and reacting the product, together with an aminoazo dyestuff R1-N=N-R2-NH2, with phosgene, cyanuric chloride or 2 : 4-dichlorquinazoline; if cyanuric chloride is used, the third chlorine atom is left free, converted into a hydroxy group or reacted with ammonia or a primary arylamine. Preferably R1 is identical with R3, but if not, the other aminoazo dyestuff may be derived from an amine of the benzene or naphthalene series by diazotizing and coupling with aniline or a p-coupling substituted aniline.  When the disazo dyestuffs contain metallisable groupings, e.g. salicylic acid residues, they may be metallised in substance, in the dyebath or on the fibre, e.g. as in Specification 455,274, copper and chromium are suitable metals.  Metallising on the fibre may take place in conjunction with the condensation products from formaldehyde and cyanamide or guanidine derivatives.  The dyes give light- and wash-fast shades on wool or cellulosic fibres, e.g. linen, cotton, artificial silk and staple fibre from regenerated cellulose.  In the examples: (1) 2 mols. of the dyestuff 3-aminopyrenedisulphonic acid --> 4-methoxy- or 4-ethoxy-m-toluidine are treated with phosgene; other substituted anilines may be used; (2) 2 mols. of the dyestuff 3-aminopyrenedisulphonic acid --> 4-methoxy-m-toluidine or amino-p-xylene are condensed with cyanuric chloride and the third chlorine atom reacted with ammonia; (3) 2 mols. of the dyestuff 3-aminopyrene-disulphonic acid --> amino-p-xylene or 2 : 5-dimethoxyaniline are condensed with phosgene; (4) phosgene is reacted with 1 mol. of the dyestuff 3-aminopyrenedisulphonic acid --> 4-methoxy-m-toluidine and 1 mol. of the dyestuff 1 - amino - 8 - naphthol - 3 : 6 - disulphonic acid toluene-p-sulphonic ester --> 4-methoxy-m-toluidine (with subsequent hydrolysis of the ester group) or 1 mol. of 4-amino-41-oxyazobenzene - 31 - carboxylic acid; (5) as in (4) using cyanuric chloride in place of phosgene and reacting the product with ammonia (before hydrolysis of the ester group); (6) 2 mols. of the dyestuff 3-aminopyrenedisulphonic acid --> 4-methoxy-m-toluidine are reacted with 2 : 4-dichlorquinazoline.  A further example is given of the dyeing of cotton with after-coppering.