baber/WOPTO huggingface dataset:
Patent GB-571653-A (GB)
Title: A process for the preparation of 2-aminothiazole and 2-amino-5-alkylthiazoles
IPC: C07D277/40
Filed: 1944-03-21
Abstract: 2-Aminothiazole and its 5-alkyl derivatives are obtained by chlorinating, preferably below 15 DEG  C., ethyl alcohol or an alcohol of the general formula R-CH2-CH2-OH, wherein R represents an alkyl group, such alcohol containing advantageously less than 10 per cent of moisture, treating the crude chlorination product directly with thiourea, as such or in aqueous suspension or solution, and subsequently isolating the free amine, e.g. by evaporating the reaction mixture to dryness at about 80-100 DEG  C., dissolving the residue in water and basifying the solution, preferably below 15 DEG C.  Specified alcohols of the above general formula are n-propyl, n-butyl, n-amyl and n-hexyl alcohols.  The chlorination may be effected in an inert solvent, e.g. carbon tetrachloride or petrol. In examples: (1) chlorine at 5-10 DEG  C. is bubbled through rectified spirit (95 per cent) or absolute alcohol, cooled below 10 DEG  C., the chlorination product is added to p  an aqueous suspension of thiourea, the mixture after 4 hours is evaporated to a syrup or paste which is dissolved in water and the solution is made alkaline with sodium hydroxide, whereupon crystals of the 2-aminothiazole separate; (2) butyl alcohol is similarly chlorinated and the chlorination product added to an aqueous suspension of thiourea, the mixture is maintained at 80-100 DEG  C. for 4-6 hours and cooled to allow two layers to separate, the upper layer being treated for recovery of butyl alcohol and the lower aqueous layer being evaporated and further treated as in (1) to obtain crystals of 2-amino-5-ethyl-thiazole.
Patent GB-1010120-A (GB)
Title: Improvements in or relating to welding apparatus provided with a vibrating welding tip
IPC: B23K20/10
Filed: 1963-02-08
Abstract: 1,010,120. Welding by pressure. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Feb. 8, 1963 [Feb. 13, 1962] No. 5243/63. Heading B3R. [Also in Division H4] In a welding apparatus including a welding tip set in vibration by an electro-mechanical transducer with an amplitude transformer wherein the force with which the tip is pressed on the work is taken by a supporting member arranged at right angles to the amplitude transformer and maintained in bending vibration, the supporting member freely engages the amplitude transformer or part of the tip attached thereto and has a thickness in the direction of vibration smaller than that of the amplitude transformer at the area of contact of the supporting member with the amplitude transformer or part of the tip and the length of the member between a support point and its contact point corresponds to a natural resonant frequency of bending vibration which is substantially equal to the frequency of mechanical vibration. Ultrasonic vibrations, e.g. 20 k.c per sec. produced by a magnetic-strictive transducer 3 are transmitted by a circular section amplitude transformer 4, 5 to tip 6 in contact with workpieces 1, 2 of aluminium pressed by a member 10. A titanium, nickel-chromium steel or brass rod 7 clamped in a rigidly mounted member 8 takes the pressing force, is of a thickness d less than thickness D of the transformer, D e.g. - and its length l is such that the funda- 3 mental resonant frequency of bending vibration equals the frequency of transducer vibrations. The rod 7 may be matched to the shape of the end of the transformer, e.g. of square crosssection. So that the workpieces may roll beneath the tip 6, the transducer and transformer 4, 5 rotate about axis 9, the tip is a ring about the end of the transformer 4, 5 and the members 8, 10 are rings which may rotate about axes parallel to axis 9, a flange on the ring 8 engaging the tip. Specification 837,869 is referred to.
Patent GB-525296-A (GB)
Title: Improvements in gaseous fuel mixtures
IPC: C10L3/00
Filed: 1939-02-17
Abstract: 525,296. Combustible gas mixtures. WHITE, S. H. Feb. 17, 1939; No. 5274. [Class 55 (ii)] A gaseous fuel suitable for use in a blowpipe for welding and heating metals comprises a gas of low calorific value such as coal gas admixed with propane or butane, or propane and butane, and ether, in not materially less than propane or butane or propane and butane one part, ether 0.375 parts in such quantity as to increase the calorific value of the gas by not materially less than 20 per cent. The calorific value of the gas may be increased by 25 per cent. by using 2 parts propane or butane or propane and butane and 0.87 parts ether.
Patent GB-745785-A (GB)
Title: Improvements in the construction of concrete buildings
Inventor: WHITE ERIC CHARLES
IPC: E04C3/02
Filed: 1954-02-23
Abstract: 745,785. Lintels. WOOLAWAY CONSTRUCTIONS, Ltd. July 30, 1954 [Feb. 23, 1954], No. 5283/54. Class.20(4).. A precast concrete lintel comprises a major beam A of L-section and a minor beam B bolted thereto which fits into the angle of the L to complete a rectangular section. The inner faces of the two beams are chamfered at or near the top edge to form a groove 4 and the underface of the major beam may be rebated to take a door or window frame. Battens 10 may be let in various edges. The end faces of the composite lintel have a vertical groove complemental to a tongue in the vertical end face of a horizontal ledge extending about half way into a supporting stanchion. The ledge may be stepped down slightly on one side. Specification 595,849 is referred to.
Patent GB-112562-A (GB)
Title: Improvements in Iron Connection Fittings of Wood Bedsteads.
Inventor: MACNEILL JAMES CALDWELL
IPC: F16B12/56
Filed: 1917-04-14
Abstract: 112,562. Macneill, J. C. April 14, 1917. Joints and connexions.-In a joint for securing side rails to the posts of wooden bedsteads, a bracket A is provided with studs A<2> to engage openings in the rail and a bolt B having a head B<2> and a collar B<1> which engages an open-ended keyhole slot C<2> in the top flange of the rail. The bolt is held down by a spring B<3> so that its collar engages the enlarged part C<3> of the slot and locks the bracket and rail together.
Patent GB-1426291-A (GB)
Title: Optical arrangement for beam comparison
IPC: G03H1/00
Filed: 1973-02-02
Abstract: 1426291 Optical arrangement for beam comparison HASLER A G 2 Feb 1973 [3 Feb 1972] 5361/73 Heading G2J [Also in Division H4] An optical arrangement for beam comparison includes a double prism 2 which comprises two prisms 3, 4 in contact on a semi-transmissive interface 5 and a light source 23 to disposed relative to the double prism that a beam from the source is split into two beams parallel to the interface and spaced apart by a distance which may be adjusted by altering the position of the light source relative to the prism. On exit from the prism the beams are passed through an electrooptical modifying unit 8 before being recombined and passed to a detector 24 of the prism is such that the angle of the incident light corresponds to Brewster's angle the arrangement acts as a polarizer. The arrangement may be used for absorption or scatter measurement by alternately interrupting the beams 6 and 7 or 10 and 11 by a perforated disc. The arrangement may be used to detect inhomogeneities in a plane parallel transparent plate which is introduced into the modifying unit 8 at right angles to the direction of the beam.
Patent GB-1078227-A (GB)
Title: Merocyanine dye-sensitised photographic materials
Inventor: SEIDEL BERNHARD
IPC: G03C7/28
Filed: 1965-02-08
Abstract: A dye of the formula <FORM:1078227/C4-C5/1> is prepared by reacting 2,5-dimethyl thiadiazole with propane sultone and diphenyl formamidine and condensing the product with 1,3-dimethyl hydantoin. A dye of the formula <FORM:1078227/C4-C5/2> is prepared by reacting 1-methyl-2-methylmercapto-5, 6-dichlorobenzimidazole with propane sultone and condensing the product with 3-ethyl-5-ethylidene rhodanine.  The dye of formula <FORM:1078227/C4-C5/3> is prepared by diazotizing 3,31-diethoxy-4,41 -diamino diphenyl and coupling with 1-(p-toluene sulphonyl amino)-8-hydroxy naphthalene-3,6-disulphonic acid.
Patent GB-1419133-A (GB)
Title: Terminating structure of an electric cable
IPC: H02G15/22
Filed: 1973-02-02
Abstract: 1419133 Cable terminations FUJIKURA CABLE WORKS Ltd 2 Feb 1973 [2 Feb 1972] 5421/73 Heading H2E  A termination providing an optimum temperature gradient comprises a connecting lead wire 8 attached to the end of the terminated super conductor 2, a casing 9 surrounding the end of the super conductor 2 and filled with circulated liquid helium 5, a hollow bush 32 surrounding an intermediate portion of the lead wire 8 adjacent the casing 7 and filled with circulated liquid helium 39, a tank 41 having a portion of the casing 9 and one end 36 of the bush 32 encased therein and filled with circulated liquid helium 70, a bush 13 surrounding an intermediate portion of the lead wire 8 adjacent the other end 35 of the bush 32 and filled with circulated gaseous nitrogen 22, a tank 44 having one end 17 of the bush 13 and the other end 35 of the bush 32 encased therein and filled with circulated liquid nitrogen 46, the other end 16 of the bush 13 being surrounded by an insulator 28 containing insulating oil 29. The terminal portion of the super conductor 2 is reinforced with insulation 7 and the liquid helium 5 is in communication with the interior of a pipe 4 which houses the super conductor 2, being circulated via pipes 10, 11. Ends of the casing 9 and bush 32 are closed by metal fittings 31, 34 and reinforced with insulation 14. Ends 35, 17 of the bushes 32, 13 are also closed by metal fittings 33, 19 and reinforced with insulation 14. The tanks 41, 44 have vacuum walls 45, 49 and the helium 70 and nitrogen 46 are circulated via pipes 43, 42 and 47, 48 respectively. Within the bushes 32, 13 the connecting conductor is reinforced with insulation 40, 15 and the helium and nitrogen are circulated via pipes 37, 38 and 20, 21 respectively. The'end 16 of the bush 13 is covered by an insulator 28 filled with oil 29. In another aspect (Fig. 1, not shown) the conductor 2 and tank 9 are circulated with liquid nitrogen, and the bush 40 and tank 41 are omitted from the termination; the box 9 extending into the tank (23) which encloses the end 17 of the bush 13.
Patent GB-287897-A (GB)
Title: Improvements in mining machines
IPC: E21C29/10
Filed: 1928-02-21
Abstract: 287,897. Sullivan Machinery Co., (Assignees of Holmes, M. P.). March 29, 1927, [Convention date]. Clutches, claw.-In a coal-cutting machine, the jib is held in adjusted position by engaging a member 69 with one of a series of recesses 50 in the ring 48. The cutter chain 7 is driven from the motor shaft 15 through bevel gearing 18, 19, spur gearing 22, 23, coaxial spur gears 34, 35 adapted to be connected by an internally toothed clutch ring 43, and a sprocket wheel 37. The clutch ring 43 is controlled by levers 56, Figs. 5 and 6, pivoted at 57 and connected by links 61 to operating arms 63. The arms 63 and the locking member 69 for the cutter jib are formed on sleeves arranged on a transverse shaft 65, the sleeves being connected together by semi-permanent clutches 66, 68, 71, Fig. 6, and handles 72, on opposite sides of the machine, being formed on the outer sleeves; the handles 72 are provided with locking pins 73. Starting with the parts in the position shown in Fig. 5, continuous rotation of the handles 72 first causes engagement of the clutch ring 43, then causes disengagement of the locking member 69 and finally causes disengagement of the clutch ring 43. Clutches, friction.-The opposite end of the motorshaft 15 drives a drum 11, Fig. 4, through variablespeed clutch - controlled gearing as described in Specification 277,621, the drum 11 hauling on an anchored cable 9 to feed the machine; coaxial with, and below, the drum 11 is a drum 10 co-operating with a second anchored cable 8 to feed, or control the movements of the machine. Depending from the drum 11 is a hub keyed at 185 to a spider 186 with fingers 187, Fig. 7, between which are arranged clutch shoes 190 with eccentric or cam-shaped inner surfaces 193. Between the drums 10, 11 is a control wheel 196 with depending studs 195 carrying rollers 194 engaging the eccentric &c. surfaces 193, whereby on rotating the control wheel 196, the clutch shoes 190 engage the inner periphery of the drum 10 to drive the latter from the drum 11.
Patent GB-1508212-A (GB)
Title: Apparatus for separating suspension of liquids in gas
IPC: F16N39/00
Filed: 1975-02-10
Abstract: 1508212 Centrifugal separators ROLLS ROYCE Ltd 26 Jan 1976 [10 Feb 1975] 5518/75 Headings BIT and B2P An apparatus for separating a suspension of liquid in a gas into its constituents comprises a rotatable chamber 16, an inlet 15 to the chamber for admitting the suspension, an outlet 24 for the liquid in a radially outer part of the chamber, an outlet 20 for gas in a radially inner part of the chamber and a packing 25 within the chamber comprising a relatively rigid matrix pervious to the liquid. As shown, the apparatus is a centrifugal separator for separating a suspension of oil mist in air which is passed via the gear box casing of an aircraft jet engine to the inlet 15 of the chamber 16 which is clamped by a nut 19 on a hollow shaft 11 of the engine gearbox. The shaft 11 is driven from the engine main shaft by way of a bevel gear 14. The air outlet 20 is in the form of slotted apertures 22 communicating with the bore of the shaft 11. The outlet 24 for the oil consists of drilling 27 in the outer peripheral wall 18 of the chamber. The packing 25 in the chamber 16 serves to coalesce the oil mist particles to facilitate their separation by centrifugal force. It may consist of a mesh of metal formed by plating a metal onto a synthetic open-celled foamed structure and subsequently removing, e.g. by leaching. the synthetic material. It could alternatively consist of wire gauze or expanded mesh, pierced plates or radially orientated wire bristles. A baffle 26 upstream of the outlet 20 deflects the entering suspension radially outwardly. The packing upstream of the baffle may be more pervious than that downstream of it.
Patent GB-315689-A (GB)
Title: Improvements relating to the suspension of vehicles
IPC: B60G11/36
Filed: 1929-02-19
Abstract: 315,689. Smeets, A. July 16, 1928, [Convention date]. Springs, arrangement of; guiding vertical play. -The front axles of motor vehicles are connected to the front ends of the dumb irons by elastic radius rods while the front ends of the springs have merely a sliding connection with the frame. A bracket a depending from the dumb iron b carries two rollers c, d between which the front ends of the spring e may slide, the rear end being connected to the frame by shackles f. The radius rod connecting the axle and the lower end of the bracket a includes a rod k with a fixed collar k<1> located between springs enclosed in a tube r pivoted to a plate v on the axle. The spring may be replaced by rubber blocks or other convenient means. Discs or other friction surfaces may be provided at the joints to damp vibration.
Patent GB-1298198-A (GB)
Title: Improvements in or relating to shaft, rotor and gear assemblies
Inventor: HOLGATE JOSEPH
IPC: F04C15/00
Filed: 1969-02-01
Abstract: 1298198 Rotary positive - displacement machines DRUM ENG CO Ltd 2 Feb 1970 [1 Feb 1969] 5563/69 Heading F1F [Also in Division F2] Co-operating lobed rotors 3,4 of a pump motor or blower have shafts coupled by synchronizing gears 5,6 to prevent contact between the meshing lobes. Accurate location of the gear 5 is facilitated by the latter having internal splines engaging with an equal number of splines 9 on a sleeve 10 fixed to the shaft 1, the number of splines 9 being greater than the number of teeth on the gear by at least one and such that these numbers have no common divisor other than unity. Alternatively, both of the gears are fixed to the shafts and a similar spline arrangement is provided for one of the rotors.
Patent GB-741285-A (GB)
Title: Improvements in the production of filaments, films and like shaped articles from polyacrylonitrile
Inventor: WHEATLEY EDWARD WILLIAM
IPC: D01F6/18
Filed: 1952-03-04
Abstract: Filaments, films, and like shaped products of polyacrylonitrile are produced by shaping a solution of polyacrylonitrile in a mixture of nitromethane and water containing at least 6, and preferably about 7-12, per cent by weight of water, and setting the shaped solution by means of a coagulating bath which consists essentially of nitro-methane and the water-content of which does not at any time during the process rise above 4 per cent by weight.  The process is preferably effected at 75-100 DEG  C.  The concentration of polyacrylonitrile in the solution may be 5-25 per cent, e.g. 8-14 per cent.  The coagulating bath may consist of substantially dry nitromethane, or it may contain up to 4, but preferably less than 3, per cent by weight of water, including water derived from the spinning solution.  Its temperature is preferably above 50 DEG  C., especially about 70-90 DEG  C. Advantageously the polyacrylonitrile solution and the coagulating bath are at about the same temperature between 75 DEG  and 90 DEG  C.  The composition of the coagulating bath may be kept substantially constant by continuously removing from the bath water derived from the polyacrylonitrile solution.  The filaments are preferably stretched about 3-15 times their unstretched length as they pass through the coagulating bath and also stretched at a high temperature, but below their melting-point, very soon after they have left the bath.  For example, they may be stretched by about 3-10 times their length while they pass over a hot surface at about 150-220 DEG  C., and especially about 170-210 DEG  C., or while they are heated by means of hot air, wet steam, or water at over 80 DEG C., as described in Specification 636,476.  The stretched filaments may then be heated, e.g. to about 140-200 DEG  C., while free from tension or under a tension insufficient to prevent them from shrinking.  Instead of polyacrylonitrile there may be used such copolymers of acrylonitrile with other unsaturated compounds as contain at least 85 per cent of acrylonitrile and have substantially the same solubility in aqueous nitromethane as has polyacrylonitrile itself.  Examples of such unsaturated compounds are methacrylonitrile, vinyl esters such as vinyl chloride and vinyl acetate, styrene and its derivatives, and vinylidene chloride.  The copolymers are used in the same manner as polyacrylonitrile, but the water-content of the coagulating bath is preferably kept below about 2 per cent by weight.  In the example a polyacrylonitrile is dissolved at 85 DEG  C. in about 9 times its weight of a mixture of nitromethane and water containing 8 per cent by weight of water, and the solution is spun at about 85 DEG  C. into a bath of dry nitromethane at the same temperature. The filaments are stretched by about 800 per cent in the bath and then by 500 per cent while passing over a metal plate at 190 DEG  C. Specifications 665,004 and 720,199 also are referred to.
Patent GB-1179570-A (GB)
Title: Tape Cartridge
Inventor: SMITH KOBERT REY II
IPC: G11B15/18
Filed: 1967-02-07
Abstract: 1,179,570. Tape cartridges. K. R. SMITH 7 Feb., 1967 [11 Feb., 1966], No. 5704/67. Heading G5R. A twin-spool tape cartridge comprises a pulley 141 arranged to be driven from a pinch roller and coupled to the spools 136, 137 such that a respective one is driven to take up the tape for opposite rotational directions of the pulley. As shown, the pulley 141 is driven by a belt 143 which extends between a pair of rollers (144, 146, Fig. 1, not shown) at opposite ends of the front wall and provides a resilient back-up for the tape. Springs 140 are wound in opposite senses about the pulley and coupled to the spools so that only one spool is driven while the other is free to be rotated by motion of the tape, the spools being damped by spring plates 138, 139.
Patent GB-198627-A (GB)
Title: Improved process of and apparatus for coating and welding metals
IPC: B05B7/20
Filed: 1922-02-28
Abstract: 198,627. Jenkins, A. F. Feb. 28, 1922. Gas burners.-In an apparatus for coating or welding metals, acetylene and oxygen, or other combustible fluids, are supplied to tubes 32, 33 and mix in a tube 34 before issuing from a flame tip 31. At the front of the handle 35 the tubes have trigger valves 38, 39, each normally held open by a spring 40. The trigger 41 of valve 38 has a cam 42 which engages the trigger 43 of valve 39 so as to close the latter as the operator closes the valve 38, for the purpose of regulating the flame. Near the flame tip is a metal particle spraying nozzle 44 into which leads a pipe 46 connected with the oxygen conduit on the inlet side of the regulating valve 37, and provided with a trigger 49 controlled by a spring 50 and engaged by a cam 51 on the trigger 43. so that when the valves .38, 39 are closed the spraying valve. 48 is open and vice versa. Reference has been directed by the Comptroller to Specifications 18715/10, [Class 82 (ii), Washing granular &c.], 18716/10, 15960/14, and 121,344.
Patent GB-567071-A (GB)
Title: Improvements in and relating to hand-rails for balustrading and the like
IPC: E04F11/18
Filed: 1943-04-10
Abstract: 567,071. Hand-rails. COW (QUEENSBURY), Ltd., P. B., and ROBERTSON, C. A. April 10. 1943, No. 5776. [Class 45] A hand-rail 7 of natural or synthetic rubber has a hollow channel 8 extending through its length, the channel being connected with the exterior by a passage 12. A plate 13 perforated with a threaded hole is inserted in the cavity 8, and a screw 11 is passed through the head 9 of a balustrade to engage the plate 13 and force it down to clamp the rail 7 to the head 9 without presenting any outer projections. In another form, the rail takes over the head 9 and is affixed thereto by horizontal wood screws and washer-plates, with a nailedon cover-plate at each side. In yet a further form, the screw 11 is provided with a washer, or is split and turned over at the top to embrace the channel, a nut and washer being fitted lower down to bear on the base of the rail, and the bottom of the screw, broadened by one or more butterfly nuts, is grouted in a cement &c. balustrade. A modification without screws has a dovetail channel engaging a corresponding projection along the balustrade, and a further adaptation of this type, has radial prongs extending from near the bottom of a curved main prong, all of which fit in corresponding slots in the rubber rail.