baber/WOPTO huggingface dataset:
Patent GB-784281-A (GB)
Title: Thiacoumarin derivatives and process for their preparation
Filed: 1956-02-21
Abstract: The invention comprises thiacoumarin derivatives of the formula <FORM:0784281/IV (a)/1> and salts thereof (wherein R1 is a phenyl radical which may be substituted by halogen, a nitro group, methyl or methoxy groups; or a furyl or thienyl radical which may be substituted by halogen; and R2 is an alkyl radical containing at most four carbon atoms), and a process for their preparation by heating 4-hydroxy-1-thiacoumarin with a styryl ketone of formula R1CH : CH.COR2, and if desired converting the products into salts with organic or inorganic bases.  The reaction may be carried out with or without a solvent, e.g. dioxan, alcohols, toluene and xylene, and preferably in the presence of a basic condensing agent, e.g. secondary or tertiary bases, particularly piperidine.  In examples: (1) 4-hydroxy-1-thiacoumarin, benzalacetone and piperidine are refluxed in toluene or dioxan, the mixture filtered and poured into water, when 3-(a -phenyl-b -acetyl ethyl)-4-hydroxy-1-thiacoumarin separates as an oil which is dried and crystallized from toluene; the following 4-hydroxy-1-thiacoumarins are similarly prepared from the appropriate styryl ketone: 3 - [a  - (p - methyl-phenyl) - b  - acetyl ethyl] -, 3 - [a  - (p - methoxyphenyl) - b  - acetylethyl] -, 3 - [a  - (p - fluorophenyl) - b  - acetyl - ethyl] -, 3 - [a  - (p - chlorophenyl) - b  - acetyl - ethyl] -, 3 - [a  - (21,41 - dichlorphenyl) - b  - acetyl - ethyl] -, 3 - (a  - furyl - b  - acetyl - ethyl) -, 3 - (a  - thienyl - b  - acetyl - ethyl) -, and 3 - (a  - phenyl - b  - trimethyl-acetyl - ethyl) -; using o-xylene as solvent and omitting the piperidine, 3-(a -(p-nitrophenyl)-b -acetyl-ethyl)-and the corresponding m-nitrophenyl derivative are obtained.  3 - (a  - Phenyl-b  - acetyl - ethyl) - 4 - hydroxy - 1 - thiacoumarin is also prepared in the absence of a solvent, crystallizing the melt from toluene; subsequent treatment with sodium hydroxide solution yields the corresponding sodium salt.  Starting materials.  Styryl ketones prepared by condensation of aldehydes R1CHO with methyl ketones CH3COR2 include 2- and 3-chloro-, 4-bromo-, 2-nitro-, 3-nitro-4-chloro-, 2-, 3-, and 4-methyl-, 2,4-dimethyl-, 3,4-dimethyl-, 3-methyl-4-chloro-, 3-chloro-4-methyl-, 2-methoxy-, and 3,4-dimethoxy-benzalacetone, 4-chlorostyryl-ethyl ketone, 3-nitrostyryl-t-butyl ketone, 2-chlorostyryl-isobutyl ketone, 5-chloro-furfurylidene-acetone, and 5-chlorothenylidene-acetone.
Patent GB-790206-A (GB)
Title: Improvements in or relating to engine bearing lubricating systems
Inventor: BATTLE NORMAN
IPC: F01D25/18
Filed: 1954-02-23
Abstract: 790,206. Gas turbine plant. ROLLS-ROYCE, Ltd. Jan. 24, 1955 [Feb. 23, 1954], No. 5359/54. Class 110 (3). [Also in Group XXXIV] A bearing lubricating system for gas-turbine engines comprises a vertical shaft in a casing having a bearing for the shaft and an oil reservoir below the bearing, the shaft having an annular part which has a wall portion tapering inwardly in the downward direction, duct means being provided to deliver oil from the reservoir, the oil flowing under centrifugal action upwardly along the wall portion away from the reservoir. Figs. 1A and 1B show top and bottom parts of a lift gas turbine engine. The compressor has a casing 11 on which are mounted rows of stator blades 12a, 12b. The blades 12a are hollow and support an end bearing 13 of a low-pressure shaft 14 carrying two rotor discs 16 each having a row of rotor blades 17. The blades 12b are solid and support end bearing 21 of a high-pressure shaft 20 carrying discs 22 each having a row of rotor blades 23. The turbine has an outer casing 26 and an inner casing 27 in which are mounted high-pressure nozzle guide vanes 29 and hollow low-pressure nozzle guide vanes 30 each set of guide vanes preceding a row of turbine rotor blades 31, 32. The guide vanes 30 support an assembly 38 which includes bearings 39, 37 for the ends of shafts 20, 14, respectively. Lubricating oil is supplied to these bearings through a pipe 41 and drains to a well 45 in the assembly 38 from which it passes through channels 54, through ports 55, along an archimedean screw 53, along a surface 14a of the shaft 14 and through ports 48 to the inner surface 20a of the end of the shaft 20. The oil passes up the shaft 20 and out through radial channels 49 to a manifold 51 to be returned through a pipe 52a to the engine oil tank. The compressor bearings 13, 21 are lubricated by oil supplied through a pipe 56, the oil after passing over bearing 13 flowing along a surface 16a of a central bore of the rotor disc 16, through openings 60 to the bearing 21 and through openings 62 to the surface 22d of the bore of the rotor disc 22, finally flowing through radial channels 64 to the manifold 51. The oil flow surfaces 14a, 16a, 20a and 22a increase in diameter in the direction of oil flow. In the arrangement shown in Figs. 2A and 2B, the compressor and turbine rotors have a common shaft 113 supported in bearings 115, 116 each bearing having its own oil system including an oil reservoir, means to feed oil therefrom to the bearing, and a passage for draining the oil back to the reservoir. The outer face of each bearing is connected to an annular casing 121 forming the oil reservoir. Oil passes from the reservoir through openings 131, 132, 133 to the bearing. Oil is supplied to the casing 121 through an opening 145 by means of an injector, the oil being fed past a spring-pressed ball valve 144. In a modification the oil is fed by two paths to the bearing, one leading to the top of the bearing and the other to the bottom of the bearing.
Patent GB-327243-A (GB)
Title: Improvements in or relating to steam superheater installations for marine boilers of the smoke-tube type
IPC: F22G7/14
Filed: 1929-02-18
Abstract: 327,243. Superheater Co., Ltd., and Portham, R. S. Feb. 18, 1929. Smoke-tube superheaters. - In four furnace marine boilers having a superheater with three vertical headers or sets of headers in the smokebox, the. outer headers appertaining to superheater elements in the smoke tubes of the adjacent wing nest and centre nest and the centre header or set of headers supplying elements in the smoke tubes of the lower parts of the centre nests, a single connection supplies steam to the three saturated steam headers and. a single connection delivers steam from the superheated steam headers. In the form shown each header 1, 2, 3 has two longitudinal chambers, the rear chambers of the outer headers being connected by a cross-pipe 5 having a four-way branch fitting to which a saturated steam supply conduit 7 is connected, and their front chambers being connected by a cross-pipe 6 having a similar fitting receiving a superheated steam delivery conduit 8. The chambers of the central header are respectivly connected by pipes 9, 10 with the two fourway fittings. The large area conduits 7, 8 are preferably led through a single passage 14 extending through the air heater, or one conduit may be taken through the front of the smoke-box. In a modification the saturated. and superheated steam headers are separate and arranged one, behind the other.
Patent GB-543354-A (GB)
Title: Improvements in the top curbs of water sealed gasholders
IPC: F17B1/007
Filed: 1941-04-25
Abstract: 543,354. Gas holders. THOMPSON, M. A., and NEWTON, CHAMBERS & CO., Ltd. April 25, 1941, No. 5364. [Class 54] The top curb of a watersealed gas holder is surrounded by a cup 1 fitted with a steam injector 12, electric immersion heater, or other heating means to receive snow melting on the crown of the holder. The surplus water may be drawn off by an internal overflow pipe or passes under a lute plate 7 to holes 14 in an inner cup plate 4 for discharge into the holder tank. When the holder is of the multi-lift type the cup is only of sufficient width to clear the dip plates of the second lift when the top lift is lowered.
Patent GB-151027-A (GB)
Title: Improvements in the manufacture of copper plates for process printing
IPC: B41N1/06
Filed: 1919-03-05
Abstract: 151,027. Coles, S. O. Cowper-. March 5, 1919. Printing-surfaces.-In the electrodeposition of copper plates for use in process printing, electrolyte is circulated at a high speed over the cathodes, which have a reciprocating motion continually varying in relation to the anode surfaces. The electrolyte is continually filtered. Anodes o may be suspended from conductor bars against the sides of a vat and of a longitudinal partition therein. Cathode plates are mounted in frames which are hung by links q on eccentrics, cams, or cranks r near the ends of the vat. Belt gearing drives the crank shafts at slightly different speeds. At one end of each compartment is a vertical paddle i arranged in a casing j so as to circulate the electrolyte as shown by the arrows. A suitable speed for the electrolyte is 500-600 feet per minute. At the left-hand end of the vat is a trough c through which a part of the liquid is drawn off to filters, whence it is returned by pipes c<1> at the opposite end of the vat. The current density may be 100 amperes or more per sq. ft. of cathode surface.
Patent GB-102430-A (GB)
Title: A Pipe Appliance for Cooling the Smoke, and Preventing Nicotine and Dust Reaching the Mouth.
Inventor: MURRAY HENRY ARTHUR
IPC: A24F1/16
Filed: 1916-04-17
Abstract: 102,430. Murray, H. A. April 17, 1916. Tobacco pipes.-The smoke is cooled by passing through an aluminium tube, the ends A, E of which fit in the bore of the stem and mouthpiece.
Patent GB-1336275-A (GB)
Title: Process and device for preparing a fibre fleece
IPC: D02J1/22
Filed: 1972-02-07
Abstract: 1336275 Lap-forming apparatus, fibre fleece STAMICARBON NV 7 Feb 1972 [6 Feb 1971] 5600/72 Headings D1N and D1R [Also in Division B5] Polymer extruded through spinning nozzle 3 forms filaments that are cooled by air blower 4 and/or allowed to cool during the time taken to travel distance D, thus crystallising the filaments. They are passed over contacting surface 5, heated during or after said contact so as to render the filaments plastic without causing decrystallisation, pneumatically drawn at 6 and deposited on moving belt 7 to form a fleece. Preferably the filaments are heated to 10‹C to 80‹C below the melting point of the polymer by hot plate 5. Alternatively the filaments may pass through a tunnel through which hot air is passed. Distance D is preferably 1 to 7 metres. The examples involve filaments of polyethylene, low and high density, isotactic polypropylene and copolymers thereof.
Patent GB-537327-A (GB)
Title: Improvements in or relating to absorption refrigerating apparatus
IPC: F25B15/10
Filed: 1940-03-28
Abstract: 537,327. Refrigerating. ELECTROLUX, Ltd. March 28, 1940, No. 5603. Convention date, May 30, 1939. [Class 29] Absorption systems. A draining aperture 26 for liquid collected in the outer casing 12 of a horizontally disposed gas heat exchanger of inert gas systems is located in a part of the tube plate 13 depending into a depression formed by. enlargement 27 in the end of the casing 12 and the cap 14. The, aperture may therefore be elongated and of larger size than the capillary apertures previously used, and less liable to obstruction by corrosion. The circular section casing 12 is expanded at the end to the shape shown in Fig. 4, and the sheet metal cap 14 is pressed to a similar shape, and the tube plate, casing and cap may be welded together in a single operation. The conduit 23 conveying surplus liquid from the liquid seal formed about the aperture preferably extends a slight distance through the casing wall as shown. The vertical dimension of the aperture is at least 3 mm., and preferably about 4 mm., and a welding surface of at least 2 mm. width is provided at the lower part 30 of the cap and casing. The invention may be applied to systems with counterflow of inert gas in the evaporator.
Patent GB-452442-A (GB)
Title: Improvements in and relating to the treatment of vitamin-containing oils and products obtained therefrom
Filed: 1935-02-21
Abstract: Vitamin-containing oils are subjected to mild hydrogenation and to short-path high vacuum distillation, in either order, to obtain an odourless and tasteless concentrate.  Shortpath high-vacuum distillation means distilling between substantially coextensive surfaces separated by not more than a few inches under a pressure between about 10--<2> and 10--<6> mm. of mercury.  In examples (1) and (2), cod liver oil or a fish liver oil of blue value 138 is hydrogenated and the product is distilled; in examples (3) and (4) shark liver oil is distilled and the product is hydrogenated alone or in admixture with cottonseed oil. Specification 415,088 is referred to.ALSO:Vitamin-containing oils are subjected to mild hydrogenation and to short-path high-vacuum distillation, in either order, to obtain an odourless and tasteless concentrate for incorporation into foodstuffs, e.g. margarine, and medicaments.  Short-path high-vacuum distillation means distilling between substantially co-extensive surfaces separated by not more than a few inches under a pressure between about 10<-2> and 10<-6> mm. of mercury.  In making margarine, a concentrate obtained by such distillation may be mixed with other liquefiable fats and the mixture hardened by mild hydrogenation.  In examples 1 and 2, cod liver oil or a fish liver oil of blue value 138 is hardened by treatment with hydrogen under pressure in the presence of nickel on kieselguhr and the product is distilled; in examples 3 and 4, shark liver oil is distilled and the product is hydrogenated alone or in admixture with cottonseed oil.  Specification 415,088 is referred to.ALSO:Vitamin-containing oils are subjected to mild hydrogenation and to short-path high-vacuum distillation, in either order, to obtain a tasteless and odourless concentrate for incorporation into foodstuffs.  In making margarine, a concentrate obtained by such distillation is hydrogenated in admixture with other liquefiable fats.  In an example, shark liver oil is distilled and the product is hydrogenated in admixture with cottonseed oil. Specification 415,088, [Group III], is referred to.
Patent GB-124815-A (GB)
Title: Improvements in or relating to the Bracing between the Planes of Tri-planes and Multi-planes.
IPC: B64C3/00
Filed: 1916-04-19
Abstract: 124,815. Blackburn Aeroplane & Motor Co., and Blackburn, R. April 19, 1916. Planes, arrangement of.-In crossbracing for triplanes and multiplanes, the bracing-wires are arranged diagonally across the bays formed by the top and bottom planes and the inner and outer vertical struts, and are connected at their points of intersection to metal fittings secured to the intermediate plane or planes. Figs. 1 and 2 show one form for a triplane, in which the wires o, p are connected to the upturned and downturned ends l<2> of plates l secured above and below the spar b of the intermediate plane d, for example by bolts m. In a modification, Figs. 3 and 4, the wires are connected by loops q to plates l, P bolted to the sides of the spar b.
Patent GB-139497-A (GB)
Title: Improvements in or relating to electrically operated sound generators
IPC: H04R19/02
Filed: 1920-02-25
Abstract: 139,497. Pupin, M. I. Feb. 4, 1918, [Convention date]. Condenser telephones. - Sound - generating apparatus comprises an electric condenser in the form of a stiff cylinder 3, Fig. 1, mounted within a cylindrical shell 2 by insulating-plugs 4, and connected so as to receive variations of electric potential which cause the shell to vibrate with a frequency corresponding to the frequency of the electric variations. By controlling the electric variations telephonically or otherwise in accordance with speech or musical sounds, the device, or a series of them, may be used as a producer or reproducer of such sounds. The cylinder and shell are preferably made of steel and the space between filled with a dielectric such as compressed air. The shell may be designed so that its natural frequency of vibration coincides with that of the sounds to be produced: the electric circuit may also be tuned to the same frequency. In the arrangement shown in Fig. 3, 14 is an auxiliary condenser in parallel with the oscillator 2, 3, the two being kept charged to a suitable difference of potential by a direct-current source 15 adjustable by means of the resistance 16. The primary 13 of the transformer receives a high-frequency current. To direct the sound waves in the form of a parallel beam, the oscillator may be placed with its axis on the focal line of a cylindrical parabolic mirror.
Patent GB-142792-A (GB)
Title: Device for automatically advancing the ignition in internal combustion engines
IPC: F02P5/06
Filed: 1920-02-25
Abstract: 142,792. Tuscher, J. E., (Assignee of Le Grand, Y.). May 8, 1919, [Convention date]. Make-and-break switches, mechanical; timing devices. -Consists in retarding or advancing a switch carried by a rotating spindle for timing the ignition of internal-combustion engines. As shown, the switch comprises a contact 13 on an arm 12 and is carried by a block 3 rotatably mounted on the spindle 1 which is provided with a segmental boss 2 maintained by a spring 7 against an inwardly projecting end 6 of a. lever 5 pivoted at 4 to the block 3. When this spindle rotates, the lever 5 swings out to an extent dependent on the speed, thereby turning the block 3 against the spring 7 relatively to the spindle and advancing or retarding the.position of the end 14 of the switch arm 12 relatively to a fixed cam which is commonly used to operate it.
Patent GB-125490-A (GB)
Title: Improvements in or relating to Negative Plate Substitutes for Radio-Photography.
Inventor: BURNETT EDWIN EBENEZER
IPC: G03C5/17
Filed: 1918-09-18
Abstract: 125,490. Burnett, E. E. Sept. 18, 1918. R÷ntgen-ray apparatus.-Sensitized material for use in radio-photography consists of paper coated with calcium tungstate emulsified in gelatine or the like upon which a sensitive coating is deposited.
Patent GB-607762-A (GB)
Title: Diacylamidobiphenylenedioxydialkylcarboxylic acids and process of preparation
IPC: C07C233/00
Filed: 1946-02-25
Abstract: Diacylamidobiphenylenedioxydialkyl carboxylic acids of the formula <FORM:0607762/IV(b)/1> where R is an alkylene radical such as -CH2-, -CH2.CH2- or -CH2.CH2.CH2- and Ac is a carboxylic acid radical such as acetyl, benzoyl or propionyl; are prepared by de-alkylating a dialkoxy benzidine by known methods, preferably by the action of aluminium chloride; acylating the amino groups; and reacting with a halogenoalkyl carboxylic acid in an aqueous alkaline medium.  When de-alkylation takes place by reaction with aluminium chloride a diluent may advantageously be added, such as an inert organic solvent, e.g. benzene, nitrobenzene toluene or xylene; or an inorganic salt, e.g. sodium or potassium chloride.  Suitable acylating agents are the anhydrides and chlorides of acetic, propionic, butyric or benzoic acids.  Reaction with the halogenocarboxylic acid takes place in an alkaline medium specifically aqueous caustic soda solution.  Specified halogenocarboxylic acids are chloropropionic, chlorobutyric, chlorophenylacetic and chloroacetic acids, but bromoacetic acid may also be used.  In an example, bianisidine dihydrochloride is de-alkylated by the action of aluminium chloride either in toluene solution or in admixture with sodium chloride; the resultant 3,31-dihydroxy benzidine is acylated with acetic anhydride to give 3,31-dihydroxy-4,41-biacetanilide which reacts with chloro-acetic acid to give 4,41-acetamido-3,31-biphenylene-dioxyacetic acid.  By using m-anisidine in the process of the above example 4 : 41-diacetamido - 2 : 21 - biphenylenedioxyacetic acid is obtained.
Patent GB-179707-A (GB)
Title: Improvements in or relating to safety-surface communicating tubes or cylinders for submarine vessels
IPC: B63G8/40
Filed: 1921-02-22
Abstract: 179,707. Willcock, W. H. Feb. 22, 1921. No Patent granted (Sealing fee not paid). Submarine vessels.-In escape or communication devices fitted to submarines comprising sectional tubes adapted to be projected from the submerged vessel, the first section A is kept in position in a vertical chamber H and is projected to its full extent by rack-and-pinion mechanism B, C, the section being further supported by stays S passing over pulleys P to winding-gear W and also by rollers D. The second and succeeding sections are stowed inside the submarine and are screwed on to the preceding section and projected as circumstances require.
Patent GB-1423325-A (GB)
Title: Combine harvesters
IPC: A01F12/44
Filed: 1974-02-08
Abstract: 1423325 Grain pan for combine harvesters INTERNATIONAL HARVESTER CO 8 Feb 1974 [8 Feb 1973] 05963/74 Heading A1F The grain pan of a combine harvester is made up of two sections 40, 42 hinged to each other such that with section 40 fixedly secured to the harvester frame, section 42 may be lowered by rotation about the hinge 44 in order to gain access to the interior of the harvester. The hinge 44 comprises a rolled edge 70 integral with section 42 which seats in a transverse groove 68 integral with section 40. Side members 46, 48 fixed to section 40 extend forwardly and pass on either side of the movable section 42; at the forward end of each side member are flanges 84 which engage with a wide angle plate 86, attached to section 42, when the latter is in its operating position, it being held in this position by means of bolts 88, 90. Retaining strips 92 hold bolts 88 and 90 in positions against flanges 84. Elastomeric strips 60 (attached to side members 46, 48) and 98 (attached to the forward end of wide angle plate 86) seal the edges of the grain pan when section 42 is in its operating position. With section 42 in its lowered position, the rolled edge 70 may be lifted clear of the transverse groove 68, the section then being completely detached from the harvester.
Patent GB-1485411-A (GB)
Title: Turbine discs and blades for gas turbine engines
IPC: C23C8/24
Filed: 1974-02-09
Abstract: 1485411 Turbine rotor ROLLS-ROYCE (1971) Ltd 27 Jan 1975 [9 Feb 1974] 6004/74 Heading F1T A rotor for a gas turbine engine is formed from two shells 14, 16 made of hot pressed silicon nitride and of constant thickness, and at least one heat-resistant insert 18 substantially filling the space within the shell. The insert may be of graphite or reaction sintered silicon nitride. A ring 22 of hot pressed silicon nitride is secured to the shells 14, 16 and the insert 18. A second insert 20 may be formed integrally with the blades 26, or the blades may be secured thereto. A known hot pressing method is used, and suitable dies are described, Fig. 7 (not shown).
Patent GB-1135747-A (GB)
Title: A device for controlling the suction air supply and the pressure air supply for a sheet processing machine
Inventor: SCHWEBEL ADOLF
IPC: B65H3/08
Filed: 1967-02-08
Abstract: 1,135,747. Feeding sheets. MABEG MASCHINENBAU G.m.b.H., and NACHF. HENSE & PLEINES G.m.b.H. & CO. 8 Feb., 1967, No. 6024/67. Heading B6B. Separators.-In a sheet feeding machine employing a suction member 13, and air blast members, e.g. sheet-loosening nozzle 15 and a blowing nozzle 16, a device for controlling the flow of suction and pressure air to these members comprises pump 21, a suction conduit 8 connecting the suction side of the pump to the suction member, a pressure conduit 9 connecting the pressure side of the pump to the air blast members and a valve means 2 settable selectively into a position opening conduits 8 and 9 for the flow of pressure and suction air to their respective members and into a position interconnecting conduits 8 and 9 on the side thereof leading to the pump 21 for closing a direct flow path from the pressure side of the pump to the suction side.