baber/WOPTO huggingface dataset:
Patent GB-740398-A (GB)
Title: Process for condensing formaldehyde
IPC: C07H3/02
Filed: 1953-05-22
Abstract: Carbohydrates are produced by the catalytic condensation of formaldehyde by a process comprising forming a body of aqueous reaction liquor containing the carbohydrates and unchanged formaldehyde, continuously supplying to it an aqueous mixture containing between 5 and 20 per cent by weight of formaldehyde, continuously withdrawing a portion of the reaction liquor, stopping the condensation reaction within that portion, and maintaining the concentration of formaldehyde in the liquor in the reaction zone at between 1/2 and 1/100 of that of the said aqueous mixture.  By this means a high proportion of C2-C4 compounds is obtained.  The catalyst used is preferably a lead salt soluble in the reaction mixture, for example lead nitrate, lead acetate or basic lead acetate or it may be lead oxide.  Other known catalysts, for example, magnesium, calcium or barium hydroxide, and tin formate, may be used.  An activator, e.g. benzoin, hydroxy acetone, glucose or glycollic aldehyde may be used.  The reaction can be carried out at a pH of about 4 to 9 and to control the pH of the mixture an inorganic base, e.g. lime or sodium hydroxide or an organic base, e.g. triethyl amine, may be added to the feed.  In the examples: (a) aqueous formaldehyde is condensed in the presence of lead acetate according to the process of the invention to give a mixture of carbohydrates which on hydrogenation in the presence of Raney nickel gave a mixture of ethylene glycol, glycerol and erythritol.
Patent GB-119544-A (GB)
Title: Improvements in or relating to Rotary Pumps.
Inventor: WALLIS EUSTACE FREDERIC
IPC: F04C2/344
Filed: 1917-10-09
Abstract: 119,544. Wallis, E. F. Oct. 9, 1917. Fixed-abutment t y p e ; packing vancs.-The sliding vane e of a rotary pump having an elliptical casing is fitted with rollers f at its ends.
Patent GB-1281434-A (GB)
Title: Flameproofing of polyester-cellulose fibre materials
IPC: D06M13/44
Filed: 1970-03-25
Abstract: 1281434 Phosphorus-containing aminoplasts; textile-treating compositions CIBA GEIGY AG 25 March 1970 [31 March 1969] 14604/70 Heading C3R [Also in Divisions C2 and DI] A flameproofing and optionally creaseproofing composition comprises an aqueous preparation which contains (a) at least one reaction product of (a<SP>1</SP>) a nitrogen compound which can be at least dimethylated, (b<SP>1</SP>) a compound of formula (1) wherein R 1  and R 2  each denote an alkyl, alkenyl or halogenalkyl radical with at most 4 carbon atoms and X denotes a methyl radical or a hydrogen atom, (c<SP>1</SP>) formaldehyde or a formaldehyde-releasing agent and (d<SP>1</SP>), optionally an alkanol with at most 4 carbon atoms, and (b) at least one aliphatic or aromatic polyhalogenated phosphoric acid triester. The specification contains a long list of nitrogen containing compounds. Exemplified reaction products of (a) are 3-(dimethylphosphono)-propionic acid amide reacted with hexamethylolmelamine-pentamethyl-ether, or hexamethylolmelamine, or melamine, or dimethylurea; 3-(dimethylphosphono)- propionic acid methylolamide reacted with dimethylolmelamine, or hexamethylolmelamine, or benzoguanamine, or propyleneurea, or guanidine carbonate, or a triazine, or a tetramethylolacetylenediurea or hexamethylolmelamine-pentamethyl ether; bis-(2-chlorethylphosphono)- propionic acid amide reacted with hexamethylolmelamine-pentamethyl-ether; 3-(diallylphosphono)-propionic acid amide reacted with hexamethylolmelamine - pentamethyl ether; 3-(dimethylphosphono) - methoxymethyl propionic acid amide reacted with hexamethylolmelamine and 4-(di-n-butylphosphono)-propionic acid amide reacted with hexamethylolmelamine-pentamethyl ether. Specified (b) compounds are polybrominated triphenyl phosphate; tricresyl phosphate; tris-(2,3-dibromopropyl)-phosphate; and tris-(2-chloro-2,3-dibromopropyl)-phosphate.
Patent GB-841215-A (GB)
Title: New thermoplastic moulding compositions
Inventor: FENDLEY JOHN ATTON
IPC: C08L25/12
Filed: 1957-05-08
Abstract: Thermoplastic moulding compositions comprise 100 parts by weight of a copolymer of styrene, acrylonitrile and methyl methacrylate containing 20 to 50% by weight of combined styrene, 20 to 50% by weight of combined acrylonitrile and 10 to 50% by weight of combined methyl methacrylate, and 10 to 70 parts by weight of a rubbery polymer or copolymer of butadiene-1,3. Specified copolymers are those of butadiene with styrene, acrylonitrile, methacrylonitrile and methyl methacrylate, optionally together with a small amount of a cross-linking agent, e.g. divinyl benzene or glycol dimethacrylate. The styrene copolymer may be prepared by polymerization (1) in aqueous emulsion in the presence of emulsifying agents, e.g. sodium lauryl sulphate, sodium oleyl sulphate, sodium cetyl sulphate, the sodium salts of sulphonated castor oil, sulphonated and sulphated methyl oleate, sodium oleate, sodium palmitate and sodium stearate, water-soluble catalysts, e.g. hydrogen peroxide, potassium persulphate and redox systems, and modifiers, e.g. organic polysulphides and dialkyl xanthogen disulphides; (2) in suspension in the presence of granulating agents, e.g. gelatin, pectin, starch, methyl cellulose, hydroxyethyl cellulose, talc, kaolin, polyvinyl alcohol and salts of polyacrylic and polymethacrylic acids, and monomer soluble catalysts, e.g. benzoyl peroxide; or (3) in solution or mass.  The rubbery polymers may be prepared in aqueous emulsion. The polymers may be mixed by mixing latices prior to spray drying or coagulation, by adding one in dry powder form to a dispersion of the other, or by masticating both in dry form, e.g. in a Banbury or on heated rolls.  Pigments, fillers and lubricants may be added.  The compositions may be vulcanized and may be used to form pipes, pipe couplings, refrigerator parts, kick panels, protective helmets, wheels, gears, pulleys and combs.  Specification 804,956 is referred to.
Patent GB-602258-A (GB)
Title: An improved method of and apparatus for winnowing discrete materials
IPC: A23F3/06
Filed: 1945-06-11
Abstract: 602,258. Pneumatic separating. SUTHERLAND, H. June 11, 1945, No. 14689. [Class 117] Apparatus for winnowing discrete materials, for example, tea, comprises a plurality of sloping baffles arranged one below the other in vertically-spaced relationship to form a hollow frame, means for feeding a continuous stream of discrete material onto the uppermost baffle, and means for feeding air from the outside inwardly through the material cascading from one baffle to the next. In the arrangement shown, a feed hopper 1 supports coaxial baffles, 2, 3, 4 of frusto-conical shape, and a conduit 6 leading to a source of suction. The conduit 6 is provided with a conical end 8 down which the material to be winnowed is fed, the material falling in turn on to the baffles before being discharged through the opening in the baffle 4. The feed of the material is controlled by means of a ring 9 suspended from the hopper 1 by links 10, the ring being connected by links 11 and levers to a control shaft 13 provided with a hand lever 14, whereby the ring may be given a partial rotation to adjust the ring towards or away from the flared end 8 of the hopper 1. Reference has been directed by the Comptroller to Specification 588,347.
Patent GB-235221-A (GB)
Title: Improvements in or relating to electric switches
IPC: B60R16/00
Filed: 1925-06-05
Abstract: 235,221. Benjamin Electric, Ltd., (Assignees of Benjamin, R. B.). June 5, 1924, [Convention date]. Bases; switches, mechanical, without quick action; retractive switches. - A push-button - switch which may control the electric horn of a vehicle is combined in the same structure with a pivoted lever switch which may control the lgihting circuit. The push button switch comprises a cover 14 tiltable in any direction against the action of a spring 23 to bring a contact plate 18 into engagement with an earthed metal cup contact 13. The other switch comprises an operating member 15 carrying a spring strip contact 32 adapted to bridge the gap between a fixed contact 29 and a contact 31 which may be integral with the earthed cup 13 or separate from it. On rotating the member 15 in the direction of the arrow, Fig. 2, circuit is broken and portions 36, 37 of the strip 32 slip into positioning notches 34, 35.
Patent GB-717368-A (GB)
Title: Seats having detachable covers
Inventor: CANTOR ROBERT
IPC: A47C31/02
Filed: 1952-06-12
Abstract: 717,368. Loose covers. DUNLOP RUBBER CO., Ltd. June 5, 1953 [June 12, 1952], No. 14795/52. Class 52(4) A removable seat cover 4 has internal pockets 6 on its depending sides which engage over downwardly directed tabs 3 on a bottom pan 2 which supports the seat cushion.
Patent GB-550122-A (GB)
Title: Improvements relating to rotary barrel machines for use in electro-plating, cleaning, polishing and like manufacturing operations
IPC: C25D17/24
Filed: 1941-11-19
Abstract: 550,122. Tumbling barrels. COLEMAN & APPLEBY, Ltd., and APPLEBY, W. V. Nov. 19, 1941, No. 14878. [Class 60] [Also in Group XXXVI] A rotary-barrel machine for cleaning, polishing and like operations comprises a stand consisting of uprights a and cross-bars b, a transverse member c mounted on trunnions d and carrying a cylindrical member e in which is supported on bearings f a spindle g carrying a gear wheel h secured to the underface of the barrel i. The left-hand portion of the member d is formed as a housing l for an electric motor j which drives through reduction gearing a pinion k. in mesh with the gear wheel. The barrel supporting means e, f may be tilted by a worm and worm-wheel or other, preferably irreversible, mechanism which is operative in one of the trunnions d and contained in a housing m for actuation by a handle n.
Patent GB-398461-A (GB)
Title: Improvements in yarn winding machines
IPC: E01B3/36
Filed: 1933-05-23
Abstract: 398,461. Yarn-winding machines. MASCHINENFABRIK SCHWEITER AKT.- GES., Horgen, near Z³rich, Switzerland. May 23, 1933, No. 14982. Convention date, July 2, 1932. [Class 120 (ii).] In a yarn - winding machine for producing crosswound packages in which a grooved cam drum reciprocates the thread guide, the latter is engaged with the cam groove by means of a roller and a pivoted tongue, so that where the grooves intersect, the tongue ensures that the roller follows the correct groove ; the ends of the drum are reduced in diameter so that the tongue is freed from the groove in order that it may change its direction, whereas the roller is still in engagement with the groove. The thread guide carriage 8 carries a pin 10 on which are separately pivoted a roller 12 and a tongue 11. The tongue ensures that the roller crosses straight over at the intersections C in the cam groove. The ends 13 of the cam drum 4 are reduced in diameter so that the groove is there only deep enough to accommodate the roller 12, the tongue 11 being free to swing round so that it can re-enter the oppositely inclined portion of the groove. It is stated that the cam drum may be driven by a gear train from the cop spindle, the cop preferably being driven by a friction roller.
Patent GB-1430142-A (GB)
Title: Automatic frequency control loop apparatus
IPC: H03D3/08
Filed: 1973-03-28
Abstract: 1430142 A.F.C. systems BBC BROWN BOVERI & CO Ltd 28 March 1973 [30 March 1972] 14987/73 Heading H3A An A.F.C. system for frequency shifting an input frequency comprises a control loop including a modulator M, a frequency discriminator circuit D arranged to deliver an error signal depending upon the deviation of an output frequency fz of the modulator from a reference frequency fo for controlling an oscillator Os wherein the frequency discriminator circuit includes at least one discriminator (see Fig. 2) connectible alternately into the control loop and to a reference frequency source Gf0 such that when the discriminator is connected to the reference source Gf0, its output Ad is operatively connected via a compensation circuit K to a frequency regulating input of the discriminator to adjust its output voltage to a predetermined reference value, e.g. zero, and a storage arrangement Sp, e.g. a Miller integrator, connected to the discriminator for maintaining its adjusted reference frequency when the discriminator circuit is connected into the control loop. The arrangement provides for periodically interrupting the A.F.C. control loop for a very short time in which any drift of the discriminator reference frequency is corrected. In the alternative arrangement of Fig. 3 (not shown), the discriminator circuit includes two discriminators, one of which remains connected in the loop while the other is corrected. The discriminator may include two band-pass filters (Fig. 4, not shown) stagger tuned above and below the reference frequency and one of which may be adjusted by the integrator output Efo for determining the reference frequency. The filter outputs are detected and amplitude compared to provide the discriminator output. Alternatively, the tuned circuits may have fixed tuning (Fig. 6, not shown) and the discriminator output adjusted to be zero at the reference frequency.
Patent GB-1003680-A (GB)
Title: Curing of polyvinyl halides
IPC: C08K5/23
Filed: 1963-04-17
Abstract: Compositions comprise a vinyl halide resin and as curing agent therefor 0.25 to 6% by weight of the resin of 2,21-azobisisobutyronitrile or p,p1-oxybis-(benzene sulphonyl hydrazide). Specified resins are polyvinyl chloride, polyvinyl bromide and copolymers of vinyl chloride with vinyl acetate, vinyl butyrate, vinyl acetobutyrate, vinyl hexoate, vinylidene chloride, vinyl ethers, vinyl ketones, itaconic esters and acrylic compounds. The compositions may also comprise plasticizers, e.g. tricresyl phosphate, dibutyl phthalate, di-(2-ethylhexyl) phthalate, dibutyl sebacate and di - (2 - ethylhexyl) azelate; stabilizers, e.g. lead oxides and lead carbonate; and fillers, e.g. carbon black, barytes, zinc oxide, clay and wood flour.  The compositions may be moulded or applied to electrical conductors and cured by heating.  Examples describe compositions comprising polyvinyl chloride, dibasic lead stearate, lead carbonate and (1) 2,21-azobisisobutyronitrile and di-(2-ethylhexyl) phthalate, and (2) p,p1-oxybis-(benzene sulphonyl hydrazide) and tricresyl phosphate.  Specifications 548,094 and 865,184 are referred to.
Patent GB-848562-A (GB)
Title: Improvements relating to the construction of gas turbine engines
Inventor: SHARMAN JOHN CHARLES
IPC: F01D5/04
Filed: 1956-05-17
Abstract: 848,562. Making turbine rotors. GARRING- TONS Ltd. May 15, 1957 [May 17, 1956], No. 15352/56. Class 83 (2). [Also in Group XXVI] Gas turbine engine components such as turbine rotor discs or compressor impeller discs comprise a rotor of substantially frusto-conical form and a plurality of flat or substantially flat vanes which extend radially in angularly spaced relationship therefrom, the rotor being formed by a forging operation and each vane also being formed by a separate forging opeiation. The rotor is formed subsequent to the forging operation, with a series of angularly spaced blind holes extending axially inwardly from the larger diameter face thereof and with radially extending slots communicating with the holes and each vane is formed at its inner end with an enlarged root portion which is subsequently engaged in a keyhole shaped slot in the rotor so as to secure the vane against radial and angular displacement. The invention is shown applied in the case of a bladed impeller disc 10 of a radial flow compressor of a gas turbine engine, the impeller disc forging shown at the left-hand side of Fig. 2 being subsequently machined to provide a series of blind holes 18 extending axially from the face 19 of larger diameter, and a series of radially disposed slots 20 extending through the periphery of the disc and communicating with the holes 18. The vanes 11 are formed as flat forgings having an enlarged root portion 12 of circular cross-section extending from the side 13 of the vane to just past the centre line thereof. The vanes are entered into the slots in the impeller disc from the left-hand side, Fig. 3, and are secured to the impeller disc by means of screws 22.
Patent GB-1386796-A (GB)
Title: Hydraulic gear pumps
IPC: F04C15/00
Filed: 1971-05-18
Abstract: 1386796 Rotary positive-displacement pumps DOWTY HYDRAULIC UNITS Ltd 18 May 1972 [18 May 1971] 15529/71 Heading F1F In an hydraulic gear-pump with axially-pressureloaded bearing-bushes 20 ÀÀ 23 supporting shafts 16 ÀÀ 19 for the gears 14,15, jarring of the gears is minimized and the shafts lubricated by a proportion of the liquid in a space between the meshing teeth being allowed to escape to the lowpressure side through ports 50 adjacent the driving gear 15, ducts 51,52,53, annular recesses 40 ÀÀ 42, grooves 54,56, chambers 36,37, holes 48 and recesses 46,47 adjacent an inlet port 12, the said space being substantially isolated from the highpressure side by the meshing teeth, Figs.5 and 6 (not shown). Pressure-loading chambers 34,35 are sealed relative to the chambers 36,37 by rings 31 and communicate with an outlet port 13. Slots 39 determine the circumferential extent of a highpressure area on the face of each bush adjacent the gears, Fig.2 (not shown).
Patent GB-144674-A (GB)
Title: Improvements in and relating to electric lamps
IPC: H01J17/40
Filed: 1920-06-09
Abstract: 144,674. British Thomson - Houston Co., (Assignees of Moore, D. M.). Nov. 30, 1917, [Convention date]. Void [Published under Sect. 91 of the Act]. Vacuum tubes. - A lamp contains a rare gas at such a vacuum and electrodes at such a distance that at a low electric pressure, say 110-220 volts, a discharge is set up in which substantially only the " negative glow " is visible. No special starting-device is required. The gas may be neon, preferably pure, helium, or a mixture of these containing 20 per cent by volume of helium. The pressure may be that of 1 millimetre of mercury, but depends on the composition of the gas and the spacing of the electrodes. With the pressure mentioned, the form shown in Fig. 1 is suitable. Four aluminium electrodes 3-6, spaced apart by a distance small in comparison with their length, are supported by two glass or like spiders 8 on a stem within a bulb adapted for insertion in an ordinary incandescent-lamp holder. The bulb is about 3 in. in diameter and 7 in. long. The electrodes may be alternately connected to opposite supply leads, or two of each polarity may be adjacent. To prevent short-circuiting by deposits produced on the arms, a resistance, say of 300 ohms, may be inserted in the cap. The lamp then takes a current of 0.07-0.1 ampere on a 200-volt supply. Another form of lamp has similar spiders supporting eight parallel filaments of carbon or metal at two distances from the stem. In a third form, four cathodes are arranged as shown in Fig. 1, and a helical anode closely surrounds the stem. A fourth form comprises two disk electrodes transverse to the axis of the bulb. If alternating current is used, the disks are of the same size; otherwise the anode is nearer the cap and is smaller than the cathode. Roughening the electrodes facilitates.the discharge.
Patent GB-414488-A (GB)
Title: Improvements in or relating to electric discharge devices and cathode arrangements for use therein
IPC: F01L13/00
Filed: 1933-05-31
Abstract: 414,488. Thermionic cathodes. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. May 31, 1933, No. 15757. Convention date, May 31, 1932. [Class 39 (i).] A cathode suitable for use in gas-filled tubes such as rectifiers comprises a cylindrical insulating body, a metallic strip of flat ribbon form wound helically on the body with the flat side in contact with it and a layer of electron emitting material deposited on the body and ribbon, means being provided for passing the heating current through the strip. The strip, which may be of nickel, is preferably wound on with the turns very slightly separated. The insulating body is preferably hollow.
Patent GB-399759-A (GB)
Title: An improvement in or relating to pumps
IPC: F04D29/10
Filed: 1933-06-01
Abstract: 399,759. Rotary pumps ; stuffing- boxes. HOLDEN & BROOKE, Ltd. and JEFFERY, W. E., Sirius Works, West Gorton, Manchester. June 1, 1933, No. 15861. [Classes 110 (i) and 122 (v).] A zone in the stuffing-box associated with a rotary pump is exhausted by the action of the pump and the leakage fluid is conducted from the stuffing-box back to the pump. The stuffing-box is shown with packing rings 3 and two lantern rings 4, 5..The zone round the ring 4 is in communication with an ejector 7 connected in a byepass between the delivery and suction sides of the pump. A lubricator 10 is associated with the lantern ring 5.
Patent GB-262342-A (GB)
Title: Improvements relating to electric motor controllers
IPC: H02P1/04
Filed: 1925-08-25
Abstract: 262,342. Harbour, R. H., and Walton, J. R. Aug. 25, 1925. Automatic circuit-breakers; electric cut-out systems.-To protect a polyphase electric motor, no-volt magnets e, f, g in the respective phases of the supply trip a holding-on latch t of a line switch a<1>, b<1>, c<1> when the current fails in any or all of the phases. The device may be associated with an overload release as described in Specification 263,408.
Patent GB-624230-A (GB)
Title: Improvements in and relating to toy horses and the like
IPC: A63H7/04
Filed: 1947-06-17
Abstract: 624,230. Toy horses. JOHNS, A. June 17, 1947, No. 16001. [Classes 136 (ii) and 136 (iii)] In a toy horse the hind legs F are hinged to the body at G and are connected by a rope H passed over a roller J to a cross-bar K which may be provided with stirrups L for the feet of the user. Small rollers N carried by chain from the legs act as scotches for the studded supporting wheels M.
Patent GB-1286543-A (GB)
Title: S,s-substituted 2,2-thio-, sulfinyl-, and sulfonyl-alkanyl and -alkanone oximes
Inventor: FRIDINGER TOMAS LEE
IPC: C07D339/00
Filed: 1969-08-18
Abstract: 1286543 Substituted oximes MINNESOTA MINING & MFG CO 18 Aug 1969 [19 Aug 1968 11 July 19691 16013/72 Divided out of 1286542 Heading C2C Novel S,S-substituted 2,2-thio-, sulphinyl-, or sulphonyl-alkanyl and -alkanone oximes having the general formula wherein A 1  and A 2  are thio, sulphinyl or sulphonyl linkages; R 1 , R 2  and R 3  are (C 1 -C 4 ) alkyl or alkenyl radicals, or R 1  and R 2  when taken together form a (C 2 -C 12 ) alkylene or alkylene radical, 2 to 5 carbon atoms of which form a chain linking the sulphur atoms, and R 4  is hydrogen or a (C 1 -C 4 ) alkyl radical, are prepared by contacting an aldehyde of the formula with a strong acid salt of hydroxylamine in water or an organic solvent at a temperature of from 0 to 200 C.