baber/WOPTO huggingface dataset:
Patent GB-865660-A (GB)
Title: Improvements in or relating to separation of gaseous mixtures
IPC: F25J3/02
Filed: 1957-11-26
Abstract: 865,660. Cold separation of gas mixtures. AIR PRODUCTS Inc. Nov. 26, 1957 [Jan. 4, 1957], No. 36765/57. Class 8(2). Removal of a high boiling point fraction e.g., hydrogen from a mixture containing a relatively low boiling fraction e.g., a mixture of methane and carbon monoxide contained in coke oven gas is effected by feeding the mixture through a duct 10 and heat exchangers 12, 14 into a scrubber 15 supplied through a duct 102 with washing liquid e.g., nitrogen to remove the hydrogen after being cooled in passes 95, 96 of heat exchangers 97, 98 traversed by top gas from the scrubber at the temperature at which said top gas leaves the scrubber. Nitrogen is obtained from the head of the low pressure stage 30 of a conventional two-stage air rectification column 30, 31 and after being warmed in a heat exchanger 38 traversed by incoming air is compressed at 71. One portion of warm compressed nitrogen is cooled in passes 77, 78 of heat exchangers 79, 80 traversed by bottom liquid from the scrubber 15, the remaining warm nitrogen is cooled in passes 81, 82 of heat exchangers 83, 84 traversed by nitrogen bled from between passes 95, 96 of heat exchangers 97, 98 and expanded in a valve 116 and warmed in heat exchanger 14 ; said exchangers 83, 84 also being traversed by top gas from the scrubber 15 in passes 104, 105. The so-cooled portions of nitrogen are then combined and liquefied in a pass 90 of a heat exchanger 91 traversed by crude liquid oxygen from the base of column 31 and is further cooled in passes 95, 96 of exchangers 97, 98 before being expanded in a valve 102 into the scrubber 15. Nitrogen from the warm end of heat exchanger 83 is recycled through a line 120 to the inlet of the compressor 71 and the gas leaving the pass 105 of exchanger 83 passes along a line 106 and a pass 107 of exchanger 12.
Patent GB-1201210-A (GB)
Title: A method of producing 2-(nitro-phenyl) alkyl halides
Inventor: BAKKE JAN MAGNUS
IPC: C07C205/11
Filed: 1968-08-01
Abstract: 1,201,210. 2-(Nitro-phenyl) alkyl halides. BOFORS A.B. 1 Aug., 1968 [4 Aug., 1967], No. 36833/68. Heading C2C. A method of preparing a 2-(nitrophenyl) alkyl halide comprises halogenating a 2-(nitrophenyl) alkanol with a halogenation agent. Specified halogenation agents include thionyl chlorides, phosphorus tri- and pentachloride, cone. hydrochloric acid, hydriodic acid and phosphorus tribromide or triiodide. Examples describe the preparation of 2-(o-nitrophenyl) ethyl chloride using thionyl chloride or concentrated hydrochloric acid, and of 2-(o-nitrophenyl) ethyl bromide using hydrobromic acid.
Patent GB-990938-A (GB)
Title: Improvements in or relating to dental apparatus
IPC: A61C19/00
Filed: 1962-09-28
Abstract: 990,938. Dental stands. W. FISCHER, [trading as EMDA FABRIK ELECTROMEDIZINISCHER UND DENTALER APPARATE GEORG HARTMANN]. Sept. 28, 1962 [March 6, 1962], No. 36970/62. Heading A6R. An instrument holder 10, which is pivotal out of a chamber 8 in a dental stand under the influence of gravity upon opening a slide 3 closing the chamber, has means for damping the outward pivotal movement. The holder 10 which removably accommodates an instrument 11 is mounted on pivots 9. An arm 13 attached to the holder is pivotally connected to the lower end of the rod 21 of a piston 20 which is reciprocable in a cylinder 19 secured to the wall of the chamber 8. Outward pivotal movement of the case under gravity through an opening 2, which is exposed on moving the slide 3 downwardly, moves the piston upwardly in the cylinder, air leaving the cylinder slowly through an adjustable opening 25, 26 in a nipple 23 and thus damping the movement of the piston and holder. The outward travel of the holder is limited by engagement between a cranked portion 15 of the arm and a rubber buffer 16 on the chamber. As the slide is raised to close the opening 2, edge portions 5, 6 of the slide engage rollers 12 on the case to swing it back into the chamber so that the piston moves downwardly in the cylinder. The return movement of the piston is undamped, air entering the cylinder 19 freely through an orifice. The nipple 23 is a loose fit in the orifice and has a flange which is normally urged by a spring 24 to close the orifice. In an alternative construction (not shown), a piston having an orifice and a one-way valve is reciprocable in an hydraulic cylinder so that movement of the piston in one direction as the holder is exposed is damped by closure of the valve.
Patent GB-1169310-A (GB)
Title: A Process for the Resolution of DL-6-phenyl-2,3,5,6-tetrahydroimidazo[2,1-6]thiazole
IPC: C07D513/04
Filed: 1968-08-02
Abstract: 1,169,310. Optical isomers of condensed imidazo - thiazole derivative. IMPERIAL CHEMICAL INDUSTRIES OF AUSTRALIA & NEW ZEALAND Ltd. 2 Aug., 1968 [24 Aug., 1967; 11 Jan., 1968; 18 Jan., 1968], No. 37039/68. Heading C2C. Optically active D- and L-isomers (the L- isomer being particularly suitable for the treatment of helminthiasis) of 6-phenyl-2,3,5,6-tetrahydroimidazo - (2,1-b) thiazole (tetramisole for short) are separated from their racemate by a process which comprises adding to a predominantly aqueous solution of said racemate, or a water-soluble derivative thereof, an optically active isomer of a carboxylic acid or a water-soluble derivative thereof, which acid has a molecular weight greater than 250, forms a salt with one of said tetramisole isomers having a solubility in said aqueous medium considerably lower than that of the corresponding salt of the other tetramisole isomer and wherein the concentration of said racemate in solution is such that said less soluble tetramisole isomer salt crystallizes from said aqueous medium to the substantial exclusion of the other tetramisole isomer salt. A preferred resolving agent is a water-soluble derivative of an optically active isomer of an amino acid, e.g. an N-arylsulphonyl- L(+)- or -D(-)-glutamic acid and the novel L(-)- and D(+)-tetramisole V-arylsulphonyl- L( + )- and D(-)-glutamate salts (the term aryl includes: phenyl-, p-toluene-, p-fluorobenzene-, p-bromobenzene- and p-nitrobenzene-) including the hydrates thereof are described.
Patent GB-998052-A (GB)
Title: Enlarger for producing composite photographs comprising text elements and/or illustration elements
IPC: G03F1/90
Filed: 1963-09-20
Abstract: 998,052. Composite photography. BONNIERFORETAGEN A.B. Sept. 20, 1963 [Sept.21, 1962], No. 37180/63. Headings G2A and G2C. An enlarger for producing a composite photograph in which the various text elements and/or illustrations are one by one and in succession and in correctly adjusted sizes and positions, projected on a layout from which, after each projection, they are reproduced by exposure on a photographic sensitive material, the layout being held on one side and the photographic material on the opposite side at a frame 12 pivotally mounted on a central horizontal shaft, as shown diagramatically in Fig.1. The enlarger is power operated and has as automatic focusing device for the lens 11. The elements for projection are carried on film strip 3 carried in cassette 2 and driven by reversible motor 30 past gate 6 to give longitudinal film adjustment. Transverse adjustment is made by driving the cassette on rails by means of reversible motor 42 operating through gears 40, 41, and 39 and rack 38. The cassette also rotates about a vertical axis. Beneath gate 6 is mounted on adjustable masking device 9 comprising four flexible metal strips wound on to individual spools which are reversibly rotated by separate electric motors with cam-operated limit switches to determine the range of movement. The lamphouse, cassette, and projection lens are carried on a bracket 63 displaceable vertically on uprights 65 when the action of a reversible electric motor 66 having a reduction gear. The bracket is suspended on chains 67. The lens is focused through a system of pivoted levers operated by an arm 74 which engages the curved rail 72 through roller 73. The enlarger is mounted between cupboards 83, 84 above a table 85 displaceable on rails in two mutually perpendicular directions. On table 85 is mounted a frame 93 which on one side carries the positive photographic material, and on the opposite side has the layout, the frame pivoting about a horizontal axis by means of lever 102 to present the positive material or the layout uppermost. Switches 101, 102 are actuated in each position to control the current to the projector lamp, the current being reduced by a series resistor for projection on to the layout. The duration of the exposure is controlled by timer 104 and the lens aperture is set by a solenoid diaphragm adjuster.
Patent GB-360715-A (GB)
Title: Improvements in and relating to three electrode valves
IPC: H01J19/02
Filed: 1930-12-10
Abstract: 360,715. Thermionic valves. SALOMON, A., 28, Dernburgstrasse, Charlottenburg, and FREY-RADIO GES., 35, Bouchestrasse, both in Berlin. Dec. 10, 1930, No. 37284. Convention date, Dec. 10, 1929. [Class 39 (i).] A cathode and a control electrode are arranged on a kaolin or like tube containing a heater, so that the control member does not lie in the path of the electrons. As shown, a helical cathode 6 and a helical control electrode 7 of oxidized molybdenum or tungsten wire are mounted on a kaolin tube 1 containing a heater 8. In another arrangement the control electrode consists of a metal deposit on the tube and is covered by a thin insulating layer on which the cathode is arranged.
Patent GB-915833-A (GB)
Title: Multiple blade reciprocating saw
IPC: B28D5/04
Filed: 1961-10-18
Abstract: 915,833. Sawing stone &c. NORTON CO. Oct. 18, 1961 [Nov. 22, 1960], No. 37328/61. Class 124. In a multiple blade saw comprising a pair of end frames, the ends of the blades are held solely by friction in at least one of the frames, and longitudinal frames connecting the end frames have means to force the end frames apart to tension the blades. An end frame comprises uprights 10 or 10<SP>1</SP> connected to saw-holding blocks 16, 18. The ends of the blades 22 are clamped between spacers 24 held between a pair of the blocks, the clamping force being adjusted by screws 34. The longitudinal frames comprise rods 52 fixed to the uprights 10 and sliding within the uprights 10<SP>1</SP>, the tension of the blades being determined by the setting of screws 54 engaging the ends of the rods. The frames and blades are reciprocated by a connecting rod 70, the members 10, 10<SP>1</SP> carrying bearings 44, 48 sliding on guides 6, 8. The blades are strips of metal fed with grit to facilitate sawing. A workpiece 62 is mounted on a lever 56 and urged towards the blades by a weight 64.
Patent GB-983227-A (GB)
Title: Improvements in and relating to thermoelectric ignition safety devices
IPC: F23N5/10
Filed: 1963-09-24
Abstract: 983,227. Electromagnets. JUNKERS & CO. G.m.b.H. Sept. 24, 1963 [Oct. 4, 1962], No. 37435/63. Heading H1P. The electromagnet for a thermo-electric ignition safety device is secured to support plate 25 by lip 41 which is swaged over a shoulder on core 24. A hollow contact stud 26 is mounted on plate 25 and insulated from it by washers 45, 46 and the connection to the coil made by wire 51 which is connected to the stud by soft soldering. The other coil connection is made to the frame by wire 54. Armature 22 is attached by rod 15 to the movable valve plate 12 which forms part of the gas control valve. In operation, when the burners are lit the current generated in a thermal probe produces sufficient current to hold the armature in contact with the electromagnet against the action of spring 16 and thus keeps the gas valve open. In order to light the burners the valve is manually opened by means of a pushbutton.
Patent GB-877106-A (GB)
Title: Substituted urea complex salts
IPC: C07D277/58
Filed: 1957-12-02
Abstract: The invention comprises salt-like complexes of the formula <FORM:0877106/IV (b)/1> (wherein B is the cation of a base, n is the valency of B, R is a hydrogen atom or an alkyl, alkenyl or aralkyl radical which may be substituted by halogen atoms or cyano or nitro groups and R1 has the same values as R except hydrogen), and their preparation by reacting the appropriate nitro-thiazolyl-urea with a base. Suitable bases are alkali metal hydroxides and alkoxides, piperazine, morpholine and mono- and di-ethanolamines.  Examples are given.  The products are useful as veterinary medicines. Specification 771,147 is referred to.
Patent GB-980347-A (GB)
Title: Improvements in or relating to conveyor systems
IPC: B61B10/02
Filed: 1963-01-04
Abstract: 980,347. Conveyer systems. D. M. KING. Jan. 3, 1964 [Jan. 4, 1963], No. 37657/62. Heading B7L. A conveyer system comprises two conveyers 18, 19 each having load-carrying trolleys propelled along a fixed track by dogs on a driving chain which has chain trolleys running on a track above the trolley track, and having the trolley tracks parallel to each other in a trolley transfer zone. In each track, in the transfer zone is a movable track section 25, 26 normally providing a continuing track but being movable together transversely of the trolley tracks. The sections 25, 26 are carried by a frame 22 movably mounted by trolleys 23, 24 on tracks 45, Fig. 4. The chain tracks 20 are offset from the trolley tracks in the transfer zone. To propel the trucks along sections 25, 26 the frame carries two chains 27 with driving dogs 28 and driven by a shaft 34, Fig. 4; chain driving pulleys are splined to shaft 34 permitting movement of the frame 22 whilst still driving chains 27; the shaft 34 is driven by the dogs on conveyer chain 20 through gears 31, 33. In operation, a sensing device 35 detects a vacant pusher dog on conveyer 18 and effects the release of a trolley from a holding mechanism 36 in conveyer 19 and also effects the movements of frame 22 with the trolley to align section 25 with the tracks of conveyer 18, the drive chain of which takes over from driver chain 27 as the trolley leaves the section 25. Stops are operative to prevent trolleys rolling off the tracks on sections 25, 26 when these sections are out of alignment with the tracks. The transfer zone can be adapted to transfer trolleys from conveyer 18 to conveyer 19. Also the trolley drive on frame 22 can comprise several drive chains which accelerate the trolley over sections 25 or 26, Fig. 5 not shown.
Patent GB-1441763-A (GB)
Title: Fuel distribution and injection systems for augmented gas turbine engines
IPC: F23R3/20
Filed: 1973-08-10
Abstract: 1441763 Gas turbine jet engines - reheat fuel supply systems GENERAL ELECTRIC CO 10 Aug 1973 [5 Sept 1972] 37973/73 Headings F1J and F1L The invention relates to a thrust augmentation system for a gas turbine jet engine and is described with reference to a gas turbine ducted fan engine in which combustion equipment is provided in the fan or by-pass duct, also in the exhaust duct of the engine. The system comprises a pair of fuel ring manifolds 80, 82 to each of which is connected a series of fuel metering valve members 77 and 76 respectively, each valve member having a flange 88 to which a flange 84 of a tube member 100 or 98 is secured, the tube member being secured to a manifold 80 or 82 whereby fuel may pass from the manifold to the valve member. Each valve member 76 is formed with a boss 74 from which a bundle of spray bars 40, 42, 44 extends inwardly across the fan duct (22) into the turbine exhaust duct 46, each spray bar being formed with discharge orifices 48. Similarly, each valve member 77 is formed with a boss 74 from which a bundle of spray bars 52, 54, 56 extends inwardly into the fan duct (22), each spray bar being formed with orifices 58. A seal and vibration damping device 64 is provided at the opening 62 in the engine casing 18 through which the spray bars pass. The fuel manifolds may be supported from the engine casing 18 by means of a number of links 102 pivotally mounted to members 104, 106 secured to the casing and to the manifold. Alternatively the manifold 80 may be secured to a saddle member 108 secured to the engine casing and the manifold 82 secured to a saddle member 110 which is secured to the manifold 80. In Fig. 8 (not shown) the spray bars 122, 124, 126 which supply reheat fuel to the turbine exhaust duct 46 have associated therewith further spray bars 118, 120 which supply fuel to the fan duct 22 additionally to that supplied through spray bar assembly 36. The fuel metering valve 77 associated with the fan duct spray bar assembly 36 is arranged to supply fuel through passages (134), (133), 132, 135 to the metering valve 76 and thence to the spray bars 118, 120.
Patent GB-865789-A (GB)
Title: Apparatus for filtering solid/liquid mixtures, particularly in paper manufacture
IPC: D21F1/52
Filed: 1958-11-27
Abstract: 865,789. Paper-making machines. LORD, F. Sept. 25, 1959 [Nov. 27, 1958], No. 38235/58, Class 96. [Also in Group I] An endless belt is disposed so that one run thereof travels between a wire or felt and a suction box, the belt being composed of a plurality of rows of spaced-apart links with the links of each row staggered relatively to those of the next adjacent rows and the adjacent link ends interdigitated, said belt being guided positively in its run. In the form shown in Fig. 1, the wire or felt 10 is carried over suction boxes 11, 12 by a belt 16 composed of interdigitated links 20 of rubber or flexible plastic, assembled on pivot rods 23, and carried on a plurality of sprockets 15 on shafts 13, 14, one of which is adjustable by a device 17 to tension the belt. The links in the central region of the belt are of the form shown in Fig. 3, apertured at 22 for the rods 23 and chamfered to a narrow edge 21. This region of the belt is flanked by zones where the links are narrower and the outermost zones are formed of plain parallel-sided links. To prevent " watermarking " of the paper the link belt may be moved slightly faster than the wire or felt.
Patent GB-949790-A (GB)
Title: Improvements in or relating to transistor voltage converters
IPC: H02M7/5383
Filed: 1960-11-09
Abstract: 949,790. Converting. PHILIPS ELECTRICAL INDUSTRIES Ltd. Nov. 9, 1960 [Nov. 12, 1959], No. 38496/60. Heading H2F. [Also in Division H3T] A push-pull transistor oscillator, more particularly for a D.C. to D.C. converter, has a tuned centre-tapped collector winding for determining the oscillation frequency and a small inductance connected in the collector circuits so as to prevent the transistors, when conducting, from short circuiting the tuning capacitance and to provide a switch-off pulse for the bases. Fig. 1 shows a tuned push-pull oscillator of the basic type described in Specification 909,969, but not in accordance with the invention. The main feedback via the transformer is supplemented by feedback via C.R. circuits 5, 6, 16, 17 which provide pulses, leading in phase, to offset the effect of charge storage in the transistors due to operating near the α<SP>1</SP> cut-off frequency. A small inductor 23 is added to the common portion of the collector circuit to prevent a too rapid rise in collector current when the transistors are switched on. The resulting pulse across the inductor reduces the feedback voltage and lengthens the pulses applied to the base by the feedback at the leading and trailing edges. In Fig. 2, the small additional inductors are provided in each collector circuit and, in accordance with the invention, windings 24 and 24<SP>1</SP> are coupled to these to provide cut-off pulses at the bases In addition, the capacitors 5, 6 of the C.R. circuit are transferred to the secondary windings. In a further embodiment (Fig. 3, not shown), the small inductor is connected in series with the common portion of the emitter circuits and the feedback windings are coupled in series with the base circuits. A rectifier may be connected to the output terminals to provide a D.C. supply. Specification 909,969 is referred to.
Patent GB-327188-A (GB)
Title: Improvements in timing device for photographic printing machines
IPC: G03B27/72
Filed: 1928-12-31
Abstract: 327,188. Rennick, L. S. Dec. 31, 1928. Projection printing-apparatus; shutters.-In a timing device for copying cameras, a flap shutter passing non-actinic light is operated by a plunger 31 which is pressed into a cylinder 26 causing the spring 41 to throw over a crank arm 37, 38 which opens the shutter 22 through a link 39 and crank 24. The plunger is returned by a spring 34 against the action of a partial vacuum in the cylinder, the time of return depending on the admission of air through a needle valve 44 bearing a dial 51 graduated to indicate time. A second dial 52, geared to the shaft 16 which adjusts the position of the lens carriage on a rackwork for various degrees of enlargement, shows the ratio of the time required for exposure to the time of exposure at a standard ratio of enlargement, e.g. 1 : 1. Specification 327,187 is referred to.
Patent GB-1076226-A (GB)
Title: Releasable mounting for refining vessels
IPC: C21C5/50
Filed: 1964-09-22
Abstract: 1,076,226. Releasable mountings for refining vessels. VEREINIGTE OSTERREICHISCHE EISEN-UND STAHLWERKE A.G. Sept. 22, 1964 [Sept. 27, 1963], No. 38653/64. Heading F4B. A releasable mounting for a refining vessel such as a crucible or converter T, comprises a closed polygonal carrier body 1 located around its periphery, and on which the converter T is supported, by upper and lower brackets or claws 9, 10. The body which is connected to trunnions (2, 3) supported in bearings (4, 5) may be of triangular, square or hexagonal shape (Figs. 1a 1b, 1c) and abuts the exterior wall of the converter at three, four or five points (8) to support the converter but provides a clearance (a) at points in betwean through which the converter T may be withdrawn after rotation. The withdrawal of the converter is effected (Figs. 2a-2f) by using a transporting and lifting car H positioned underneath it, which is lifted by hydraulic rams 14, rotated underneath the converter T contacted with it, and then back rotated and lowered with it to free it from the carrier body 1.
Patent GB-994673-A (GB)
Title: Method of and means for securing purlins in metal building framework
IPC: E04B1/58
Filed: 1962-10-12
Abstract: 994,673. Securing roof purlins. M. PIGET. Oct. 12, 1962 [Jan. 26, 1962], No. 38774/62. Heading E1V. Purlins 4 are attached to a beam (not shown) by means of angle brackets 2 of various heights selected according to the required slope of the roof, one end 3 of each bracket being bent and passed through an opening in a coupling member 5, a wedge 11, also passed through said opening, serving to secure the coupling member to the bracket with the purlin 4 clamped between the coupling member and bracket. At its lower end, each bracket is attached in an upwardly open slot in the beam.
Patent GB-1447508-A (GB)
Title: Phosphors
IPC: G21K4/00
Filed: 1973-08-16
Abstract: 1447508 Luminescent materials GENERAL ELECTRIC CO 16 Aug 1973 [16 Aug 1972] 38825/73 Heading C4S [Also in Division H5] A phosphor for conversion of X-radiation comprises regularly shaped crystals of formula LnOX : Tm<SP>+3</SP> where Ln is La and/or Gd, X is Cl or Br, and Tm as activator is in amount 0À05 to 1 mole per cent, the crystals including no minor second phase and being of average particle diameter of 2 Á or more. Optical scattering effects producing blurred images, especially in medical radiographic applications, are inhibited. Such radiographic screens may include photographic film between two phosphor screens, a 4 mm. thick screen requiring 2 to 12 Á particles. Also mentioned are fluoroscopic screens and image intensifier tubes. Described preparations include precipitation from oxalic acid, firing in air, firing with NH 4 Br, and further firing with KBr, followed by washing to remove the latter. The preferred methods of Specification 1,247,602 may be used. The phosphors may be dispersed in a binder and cast on a substrate.