baber/WOPTO huggingface dataset:
Patent GB-575362-A (GB)
Title: Improvements in and relating to the decarbonylation of furfural
IPC: C07D307/36
Filed: 1944-03-13
Abstract: Furane is produced by reacting in the vapour phase and at elevated temperature, furfural and steam in the presence of a catalyst containing a dehydrogenating oxide, a mixture of dehydrogenating oxides or a chromite of a dehydrogenating oxide, i.e. an oxide which preferentially dehydrogenates, rather than dehydrates, primary alcohols.  In the examples the following catalysts are employed, in each case being reduced with hydrogen before use:-a mixed chromite of zinc and iron prepared by adding ferrous sulphate solution to a solution of zinc chloride, adding ammonium chromate solution, neutralizing with aqueous ammonia and heating and pelletting the precipitate; manganese chromite pellets containing potassium chromate; a mixed chromite of zinc and manganese prepared by adding a solution of ammonium chromate to one of zinc sulphate and manganese sulphate, neutralising with aqueous ammonia and heating and pelletting the precipitate; a mixed chromite of iron and cadmium prepared by adding a solution of ammonium chromate to one of ferric nitrate and cadmium nitrate, neutralising with aqueous ammonia and heating and pelletting the precipitate; an ignited coprecipitated zinc-copper carbonate. Other catalysts specified are nickel, cobalt, iron and zinc chromites, unpromoted or promoted with cadmium or tin chromite. The simple chromites may be prepared by precipitating the metal cations with ammonium chromate followed by ignition of the double ammonium chromate and the mixed chromites by the method indicated in the examples.  Metal oxides may be prepared by the ignition of the carbonates or oxalates.  The catalyst may be supported on a porous carrier such as activated charcoal, silica gel or kieselguhr.  The use of magnesium oxide at 500 DEG  C. is referred to, but the use of lime at 350-550 DEG  C. is disclaimed.  The activity of the catalysts may be restored by treatment at an elevated temperature first with an oxygen-containing gas and then with hydrogen.  The Specification as open to inspection under Section 91 (4) (a) comprises also the use as catalysts of oxides of chromium, molybdenum, tungsten, vanadium and uranium.  This subject-matter does not appear in the Specification as accepted.
Patent GB-730638-A (GB)
Title: Improvements in welded turbine or compressor bladed rotors and the construction thereof
Inventor: LEES GEORGE
IPC: F01D5/30
Filed: 1951-02-26
Abstract: 730,638. Fixing turbine and compressor blades. POWER JETS (RESEARCH & DEVELOPMENT), Ltd. Feb. 19, 1952 [Feb. 26, 1951], No. 4694/51. Class 110 (3). [Also in Group XXII] In making a bladed rotor of an axial flow turbine or compressor a surface on the root of a blade is welded to the corresponding radial surface on the rotor rim by heating the blade root and rim, preferably by arcing or sparking, and then applying pressure. In an embodiment a rotor 2, which may be two discs welded together, has slots in its periphery half way through its thickness with faces 2c, Fig. 1, transverse to the rotor axis, the slots alternately facing different directions. The rotor is mounted on a mandrel in bearings 11, 12, Fig. 3, which can be raised and lowered and moved towards and away from a fixed head 4 by handles 13a, 13b. A blade 1 with a step formed half-way through its thickness with a face 1b, Fig. 2, to co-operate with 2c, is held in a clamp 15 on a head 5 movable by hydraulic means 9. The rotor is pressed against an abutment 16 and head 5 is moved to insert the blade in a slot. Current from a transformer 17 causes sparking between blade and rotor and means 9 applies pressure for welding. Blades are welded in alternate slots from one side of the rotor and in the other slots from the other side of the rotor.
Patent GB-847911-A (GB)
Title: Improvements in rotary fluid pumps of the n and n+1 tooth type
Inventor: MERRITT HENRY EDWARD
IPC: B24B19/08
Filed: 1956-02-15
Abstract: 847,911. Rotary pumps. MERRITT & CO. ENGINEERING Ltd. Feb. 8, 1957 [Feb. 15, 1956], No. 4695/56. Class 110(2). In a rotary pump of the n and n+ 1 lobe type the pinion 10 is made in the form of an equilateral triangle having convex teeth 12 whilst the annulus 11 has four teeth 14 shaped as shown. The pump is provided with an inlet passage 16 and an outlet passage 17. For details of the machining of the rotor the Specification should be referred to.
Patent GB-916618-A (GB)
Title: Process for applying a steel or iron covering to the cans of nuclear reactor fuel elements
IPC: G21C3/06
Filed: 1960-02-10
Abstract: 916,618. Nuclear fuel elements. DEUTSCHE GOLDUND SILBER-SCHEIDEANSTALT. Feb. 10, 1960 [Feb. 14, 1959], No. 4704/60. Class 39 (4). [Also in Group XXII] In applying a steel or iron covering to a nuclear fuel element can, the can is enclosed in a tube of steel or iron open at one end at least with a layer of solder between the can and tube and after the end or ends have been closed the assembly is heated to solder the tube to the can. The tube may be of stainless steel for a zirconium or aluminium can or of iron and the soldering may take place with pressure on the assembly, e.g. in an autoclave. In an embodiment the zirconium can 12, Fig. 1, enclosing a rod 11 of uranium which is not enriched or uranium compound is vapour coated with solder 13, then # steel tube 14 open at one end is drawn thereon and closed at 15 by flanging over or welding and the assembly is heated to solder the tube to the can. The inside of the tube may alternatively be solder coated. The fuel element, can and tube may be non-circular in section e.g. with longitudinal ribs. In another embodiment the zirconium can 21 of a fuel element having four longitudinal ribs 22 is helically wrapped with a steel foil 23 with overlapping turns, the inside of the foil being solder coated and the foil being secured at the left hand end by a cap 24 internally solder coated. The foil is then secured at the right-hand end by a similar cap 25 and the assembly is heated in a pressure vessel to effect soldering.
Patent GB-928440-A (GB)
Title: Sealing and centering device for rotary shaft
Inventor: DREYFUS GASPARD PAUL
IPC: F16J15/40
Filed: 1962-02-07
Abstract: 928,440. Screw-type vacuum pumps; stuffing-box substitutes. COMMISSARIAT A L'ENERGIE ATOMIQUE. Feb. 7, 1962 [Feb. 9, 1961; June 6, 1961], No. 4710/62. Classes 110 (1) and 122 (5). A rotary shaft 3, Fig. 1, passing through a wall assembly 4, C between enclosures A, B containing gases 1, 2 under different pressures is centred and sealed by a fluid bearing 6, 8 and a rotary pump-type seal 9, 11 comprising at least one groove 9a and disposed in series with the bearing, means being provided for sucking gas to maintain round the shaft between the seal and the bearing a pressure close to the lower of the gas pressures. The fluid bearing comprises a rotor 5 mounted on or integral with the shaft and separated by a clearance 7 from a portion 8 of a sleeve 4 which sealingly passes through a metallic diaphragm forming a partition C. The grooves 9a are helical and are formed as two sets of opposite hand on a portion 9 of the shaft which is spaced by a clearance 12 from a portion 11 of the sleeve 4 and is separated from the rotor 5 by a groove 10. Alternatively, the grooves may be formed in the portion 11 and the groove 10 replaced by an annular chamber in the sleeve. The depth of the grooves decreases from the centre towards the ends of the portion 9. In operation, the gas 2 is sucked through the clearance 7 by a vacuum pump V into the groove 10 and out through orifices 13 connected by flexible pipes 14 to orifices 15 and the grooves 9a force back the gases 1, 2 respectively into the enclosure A and the groove 10. Alternatively, the gas 2 may be sucked through an axial passage inside the shaft communicating with the groove 10 or the clearance 7. In Fig. 2, the shaft 27 of a motor-driven rotary molecular vacuum pump is provided on each side of the rotor with a helically-grooved type seal 29 and a fluid bearing 30 which are disposed between the shaft and the pump stator 18 with a suction conduit 33 between them. The seal grooves may be formed in the stator or the shaft. The rotor 20 operates in a chamber 19 which is formed, on both sides of an annular chamber 21, with multiple thread-like helical grooves 23 having decreasing depths from the chamber 21 towards exhaust chambers 24 which communicate through passages 25 to a conduit 26 coupled to a fore-vacuum pump. The chamber 21 is connected by a conduit 22 to a vessel to be evacuated. The grooves 23 may alternatively be formed in the rotor or in both the rotor and stator. The conduits 33 may be coupled to the vacuum pump connected to the conduit 26 or to a different pump. The conduits 25 may be eliminated in which case discharge is through the seals 29 towards the conduits 33, the seals functioning as molecular pumps. The grooves 31 of each seal 29 may be formed either in the shaft 27 or in the internal wall of the chamber 19, or they may be cut in the fiat end wall of the rotor 20 in which case the chamber 24 is formed by an annular groove formed in the pump body between the grooves 23 and 31. Specifications 820,348 and 885,793 are referred to.
Patent GB-608087-A (GB)
Title: Improvements in or relating to fuzes for projectiles
IPC: F42C15/188
Filed: 1946-02-14
Abstract: 608,087. Projectile fuzes. PENNY, F. D., SUCH, R., and MITCHELL, S. S. C. Feb. 14, 1946, No. 4739. [Class 9 (i)] A projectile fuze, particularly suitable for use in underwater attacks on ships by shell fire, is constructed to function only on the second impact. To achieve this, the striker 2 is held against the action of a spring 12 in a position in which it prevents a spring - controlled shutter 4 from rotating to bring a detonator 5 into alignment with the striker, the holding means being released on first impact, whereupon the strikermoves to the rear underspring action, thus releasing the shutter and allowing detonation to take place on the second impact. In the construction shown, the striker is held in a shutter-locking position by a ball 13 which is normally held in place by an inertia member 18 which moves forwards on first impact and allows the ball to enter a recess. 16. A lead ball 21 prevents rebound of member 18. The inertia member in turn is normally held locked by a ball 28 which is held in the locking position by the head 26 of a pin 25. On firing, the propellant gases cause diaphragms 24 to reverse and move the head 26 forwards to release the ball 28. In case of failure to hit a second target the member 18 may form an auxiliary striker to fire a delay leading to the magazine 10, whereby the fuze is self-destroying. In a modification, Figs. 3 and 4 (not shown), the inertia member is mounted within the enlarged rear end of a hollow striker, and has a recess which contains a ball which is held against an internal shoulder on the striker to hold the latter in its forward position. The ball is held in place by a spring-controlled member which sets back on firing.
Patent GB-1144093-A (GB)
Title: Device and method for treating a running artificial multifilamentary thread with a gas jet
Inventor: CERUTTI GIACOMO
IPC: D02J1/08
Filed: 1967-01-31
Abstract: 1,144,093. Finishing yarns. BEMBERG S.p.A. 31 Jan., 1967 [9 Feb., 1966], No. 4744/67. Heading D1F. In a device for inerlacing the filaments of a multifilament yarn having little or no twist by means of a fluid stream impinging thereagainst, the outlet port of the gas supply nozzle and the inlet port of a confronting resonance chamber (between which the running yarn passes) are in the form of vertical slots the dimensions of which may differ e.g. the former may have a smaller cross-sectional area than the latter.
Patent GB-739831-A (GB)
Title: Improvements in or relating to separating leaf tobacco
IPC: A24B5/10
Filed: 1954-02-18
Abstract: 739,831. Pneumatic separating. ARENCO AKTIEBOLAGET, and AKTIEBOLAGET SVENSKA FLAKTFABRIKEN. Feb. 18, 1954 [Oct. 14, 1953], No. 4861/54. Class 117. Disintegrated tobacco mass is fed on to a jigger 2, reciprocated by an eccentric 3, where a primary separation of leaf fragments and stem portions occurs due to an upward air current from duct 9 passing through inclined perforations 4 in the surface 2. The partially separated material passes into a vertical channel 1 in which an upward current of air carries the leaf fragments to a chamber 10 from which they are removed by a sluice 11. The stem portions drop from the bottom of channel 1. Suction is applied to the chamber 10 from a fan 14 through a duct 13 and rotary screen 12 which passes dust but not leaf fragments. The fan outlet is connected to the duct 9 and a branch pipe 16 having a filter 15.
Patent GB-1419087-A (GB)
Title: Yarn processing
IPC: D02G1/08
Filed: 1972-03-06
Abstract: 1419087 Fricition false twister ERNEST SCRAGG & SONS LTD 23 Feb 1973 [6 March 1972] 4894/75 Divided out of 1419085 Heading D1D A friction false twister comprises a plurality of spindles 11 at the corners of a regular polygon (e.g. an equilateral triangle) the spindles carrying overlapping friction wheels 13. The spindles being mounted for simultaneous adjustment relative to the yarn path therethrough while maintaining their equiangular disposition. The spindles are mounted in eccentrics 15 which have gear teeth 15a to allow them to be synchronised by a common gear 17 or an internally toothed ring. Gears between respective pairs of eccentrics may be provided and adjustment is effected by a knob 18 driving a gear 19 or by means of the above mentioned internally toothed ring. Specification 1419085 is referred to.
Patent GB-932834-A (GB)
Title: An automatic conveyor
IPC: B65G49/04
Filed: 1962-02-09
Abstract: 932,834. Rack railways; step-by-step conveyers. LANGBEIN-PFANHAUSER WERKE A.G. Feb. 9, 1962 [April 29, 1961], No. 5001/62. Classes 78 (1) and 104 (2). In an electroplating bath material is carried by a carriage 24, which is progressed horizontally by transport device 19 and is lowered vertically into a bath by a carriage 25 operated by a ram 27 and guided by guides 23. As shown, work carriage 24 is provided with lateral arm 29 which carries the work 30 to be immersed, and is also provided with pin 44. Transport device 19 has its own independent motor 22 which drives gears 38 and 39 engaging stationary racks 36 and 37 so that the motor propels the device along the racks, the device being guided by rollers 33 and 34. The device has a latch 42 which engages with pin 44 of carriage 24 so as to lock the carriage within the device whilst transporting it horizontally. When the transport device reaches a station at which the work material 30 is to be immersed, the device stops to allow latch 42 to be unlatched from pin 44 by the contact of carriage 24 with the convex face 48 of carriage 25. Carriage 24 is thus freed, and is then permitted by ram 27 to descend between the guides 23 to the position 2 as seen in Fig. 3. After immersion of the work, ram 27 is extended and carriage 25 forces carriage 24 to rise up and enter the transport device 19 waiting thereabove (position 1, Fig. 3). The carriage 24 then latches itself into position on the transport device 19, the motor of which thereupon is clutched in to cause the device to carry the carriage to the next station. In a second embodiment motor 22 is provided with an infinitely variable speed gear so that the stopping and starting at a station may be done gradually.
Patent GB-1156422-A (GB)
Title: Steroid Nitrates
Inventor: LEDIG KURT WILLI
IPC: C07J41/00
Filed: 1967-02-02
Abstract: 1,156,422. Steroid nitrates. AMERICAN HOME PRODUCTS CORP. 2 Feb., 1967 [11 Feb., 1966; 31 March, 1966; 23 June, 1966; 13 Oct., 1966], No. 5099/67. Heading C2U. Novel compounds of the formula wherein ring A is aromatic or saturated or the 4,5-position has a double bond; R is H or CH 3 ; R<SP>1</SP> is C 1-7  alkyl; R<SP>2</SP> is H, ONO 2  (in which case R is H or there is at least one other ONO 2  group present), -O(CH 2 ) n -CH(ONO 2 )-CH- (ONO 2 )R<SP>3</SP> (wherein n is 1, 2 or 3 and R<SP>3</SP> is H or C 1-4  alkyl) or -CH(CH 3 )CH 2 CH 2 R<SP>4</SP> (wherein R<SP>4</SP> is C 1-6  alkyl which may be nitrato substituted); Y is alkoxy, acyloxy or ONO 2 , or it may be keto when ring A is not aromatic; and each X is H or ONO 2 , but not more than 4 of X, Y and R<SP>2</SP> are ONO 2 , and at least one nitrato group is present in the molecule; are prepared by nitration, e.g. of the corresponding ols or, when R<SP>2</SP> is -O(CH 2 ) n -CH(ONO 2 )CH(ONO 2 )R<SP>3</SP> by nitration of the corresponding -O(CH 2 ) n - CH=CHR<SP>3</SP> compounds. In the first-named instance nitration may be effected with nitric acid in acetic anhydride and in the second named instance with silver nitrate in the presence of iodine. The steroids have the 13#, 14α, 8#, 9α-configuration or the enantiomeric 13α, 14#, 8α, 9#-configuration, or are racemic mixtures. L - 17# - hydroxyestr - 4 - en - 3 - one is prepared by hydrolysis of l-3-methoxy-estra-2,5(10)- dien-17#-ol, itself prepared by reduction of l-estradiol-3-methyl ether. L-5α-estrane-3#,17#- diol is prepared by reduction of the 3-one. 5α - Estrane - 3#,16#,17# - triol and 13# - ethyl- 5α - gonane - 3#,16α,17# - triol are prepared similarly. 13# - ethyl - 16α,17# - dihydroxy - 5α- gonan-3-one is prepared by reduction of the corresponding 4-ene. The steroid nitrates of the invention have cardiovascular activity usually as vasodilators, and they may be made up into therapeutic compositions with suitable carriers.
Patent GB-791870-A (GB)
Title: Improvements in or relating to methods of and devices for laying complete railway track lengths
IPC: E01B29/02
Filed: 1956-02-20
Abstract: 791,870. Laying railway tracks. ENTREPRISE DROUARD FRERES. Feb. 20, 1956 [Feb. 21, 1955], No. 5127/56. Class 104 (2). For laying pre-assembled track lengths a plurality of portable frames 1, 1a each carrying a roller 2 are placed on the ballast on each side of the track to form a pair of runways for a pair of auxiliary rails 8, 8a, interconnected by a plurality of gantries 9 straddling the track and carrying hoists 10, the preassembled track lengths 3, 4 and 5 being delivered to the site by trucks 6 and then lifted therefrom by the hoists 10, the assembly comprising the auxiliary rails 8, 8a, gantries 9 and pre-assembled track lengths 3, 4 and 5 then being moved and the pre-assembled track length lowered into position and laid in the conventional manner. The trucks are drawn by a tractor which can run both on the rail track and ballasts.
Patent GB-1195306-A (GB)
Title: Improvements in or relating to Fuel Burner Control Systems
IPC: F23N5/20
Filed: 1968-02-01
Abstract: 1,195,306. Electromagnetic actuators. ELECTRONICS CORP. OF AMERICA. 1 Feb., 1968 [3 March, 1967], No. 5131/68. Heading H1P. [Also in Division F4] An electromagnetically operated shutter, for use in a burner control system, comprises a solenoid coil 48 mounted on a ball 46 and having at its centre a cylindrical plunger housing 50 in which moves a plunger 44, carrying the shutter and including a central body 70 having end sections 72, 74, a cup member 76 secured thereto, a steel ring 78 and a tubular non-magnetic spacer 86, the plunger being biased into the shutter-closed position by a spring 88 within cup 76. A copper ring 66 secured in the base of a stub portion 52 of the plunger housing forms a shading slug and the housing includes a tubular plastics member 60.
Patent GB-845647-A (GB)
Title: Improvements in or relating to organic phosphorus compounds having pesticidal properties
IPC: C07F9/165
Filed: 1958-02-17
Abstract: The invention comprises compounds of the general formula [(RO)2P(S)S]2 CH2 in which R is a C1-C3 alkyl group.  They may be obtained by reacting a salt of the general formula (RO)2P(S) SM in which R is a C1-C3 alkyl group and M is an alkali metal with a dihalogenomethane.  The reaction is preferably effected in an organic solvent medium, e.g. an aliphatic alcohol or ketone and at a temperature between 50 and 100 DEG C. and near the boiling point of the solvent.  Examples are given for the production of compounds in which each R in the above formula is methyl and ethyl respectively. The products have pesticidal properties (see Group VI).ALSO:A pesticidal composition comprises at least one bis (O:O-dialkyldithiophosphoryl) methane having its general formula [(RO)2P(S)S]2CH2 in which R is a C1-C3 alkyl group (see Group IV(b)) and a solid or liquid inert diluent.  The diluent may be talc, kaolin or other solid inert material or the composition may be in the form of an aerosol or of a solution or emulsion in an organic or aqueous organic medium and such solutions or emulsions may contain an ionic or non-ionic wetting, dispersing or emulsifying agent. Specified compositions are: (1) a solution of bis (O,O-diethyldithiophosphoryl) methane in acetone (or dimethylformamide) and toluene and containing a non-ionic emulsifying agent obtained by condensing octyl phenol with ethylene oxide, (2) as in (1) except that the solvent is a mixture of isophorone and terpinolene, (3) as in (1) except that the solvent is xylene.
Patent GB-745917-A (GB)
Title: Improvements in or relating to the determination of the moisture content of materials
Inventor: GILMAN SAMUEL
IPC: G01N23/12
Filed: 1953-02-24
Abstract: 745,917. Electric tests. INDUSTRIAL MACHINERY CO., Ltd. Jan. 29, 1954 [Feb. 24, 1953], No. 5169/53. Class 37. [Also in Group XL (b)] Apparatus for measuring percentage moisture content comprises two gauges one giving an output proportional to the weight per unit area and the other to the amount of moisture in the material under test, the outputs of the two gauges being so combined as to give an output proportional to percentage humidity. The invention is described with reference to determining the moisture content of a moving stream of tobacco. The gauge for determining weight per unit area is a known beta ray gauge and the moisture gauge is a known dielectric or resistance gauge. The output of the beta ray gauge is developed across a potentiometer 8 and that of the moisture gauge is applied directly to the grid of a triode V2. Part of the potential developed across potentiometer 8 is tapped and applied to a further triode 10. Between the cathode of the triodes is connected the winding of a polarized relay 19 the moving element of which engages one or the other of a pair of contacts to energize one of the windings of an alternating current motor 13 which drives potentiometer slider 8 in such a way as to balance out the difference voltage and recentralize the relay contact. A further potentiometer 23 is simultaneously adjusted and a meter 27 in series with this slider and the supply indicates percentage moisture. If the two gauges operate at spaced points along a moving strip one of the gauges is connected to a delaying device which may be as described in Specification 744,311. The Specification mentions that the moisture content of textile fabrics, synthetic plastic materials, the formed cigarette rod of a continuous rod cigarette-making machine, and paper, may be measured. Specification 558,491 is referred to.