baber/WOPTO huggingface dataset:
Patent GB-529046-A (GB)
Title: Control valve mechanism
IPC: F15B13/04
Filed: 1939-05-09
Abstract: 529,046. Valves. WAGNER ELECTRIC CORPORATION. May 9, 1939, No. 13876. Convention date, May 18, 1938. [Class 135] [Also in Group XXXIV] A valve device particularly adapted for use as a driver's brake valve comprises inlet and exhaust valves adapted to open in the direction of flow against loading means which loading means is adjusted by a single member so that as the loading is increased on one valve it is decreased on the other. In the form shown in Fig. 1 the connection between the fluid pressure inlet 5 and a chamber 2 connected by a conduit 9 with a power cylinder is controlled by a valve 17 pressed towards a seat 16 by a spring 18. The exhaust port 6 is connected to the chamber 2 by a conduit 7 and is controlled by a valve 20 loaded by a spring 21. The springs 18, 21 are adjusted by arms 11, 12 mounted on a member 10 slidably mounted in the casing and actuated by a lever or pedal 29. The member 10, which is held against rotation by a pin 26 engaging a slot 27 is held normally by a spring 22 with the arm 11 resting against the casing. In this position the exhaust valve is lightly loaded and the inlet valve heavilv loaded. As the member 10 is moved towards the right the loading on the first valve is increased and that on the second valve decreased thus causing a rise of pressure in the power cylinder. Leakage from the chamber 2 past the member 10 is prevented by a packing 13 acted on by a spring 14 and an expanding member 15. In a modification for use in a vacuum-operated system the valves are arranged on the inner sides of the seat partitions and are loaded by tension springs. In a further modification the member 10 is enlarged to form a piston subject to the pressure in the chamber 2 and is moved to adjust the loading on the two valves by a sliding member acting through a loading spring.
Patent GB-514628-A (GB)
Title: Improvements in and relating to fluid-operated engines and compressors
IPC: F01C9/00
Filed: 1938-05-10
Abstract: 514,628. Rotary engines and pumps. LEWINGTON, W. J. May 10, 1938, No. 13906. [Class 110 (ii)] The working chamber space is formed by two concentric cylinders and intervening sleeves SM1, SM2, Fig. 6, and shown in development in Fig. 2. The opposed edges of the sleeves form the endwalls of the working chambers and are of zigzag shape with opposed points st;, st, and st2, st4. A narrow sleeve M, Figs. 3 and 6, with parallel zig-zag walls lies in the working chamber space and divides it into several working chambers which are provided with suitable ports and, it may be, with sparking plugs. A combination of rotary and axially sliding movements result from the operating of the engine or pump and an outer sleeve is coupled by pins and slots to the rotor so that it can receive and transmit the rotary motion.. Alternatively, the machine can be arranged to provide only axial reciprocatory motion or a combination of that and rotary motion. The machine can be used as an engine or as a pump and as an internal-combustion engine can operate on either the four stroke or the two-stroke cycle. The rotor may be made with opposed points. The points on the end-wall sleeves are in that case staggered. Specification 407,072 is referred to in the Provisional Specification.
Patent GB-902043-A (GB)
Title: Supported alkali metal catalyst
IPC: C07C2/72
Filed: 1960-04-21
Abstract: A catalyst for hydrocarbon conversion processes (see Group IV(b)) is prepared by mixing a Group Ia metal with at least one Group II metal oxide and calcining the mixture, e.g. above the melting-point of the Group Ia meatal for a time sufficient to fuse the metal and the metal oxide; the mixture may be ball-milled prior to calcining.  The oxides of Be, Mg, Ca, Sr and Ba are especially preferred.  Specified catalysts are Na/MgO, K/MgO, Rb/MgO, Cs/MgO, Cs/BaO, Rb/CdO, K/ZnO, Cs/ZnO and Cs/CaO.ALSO:A C4-20 a -olefin (e.g. 2-methylpentene-1) is converted to an olefin mixture having an increased proportion of internally double-bonded olefin (e.g. 2-methylpentene-2) at 0-200 DEG C. and atmospheric to 2000 p.s.i. pressure by contact with a catalyst composition of a Group Ia metal and a Group II metal oxide.  The same catalyst may be used to alkylate an aromatic compound with a C2-20 olefin.  Specified reactants for the alkylation reaction are benzene, toluene, xylenes, mesitylene, durene, ethylbenzene, isopropylbenzene, n - propylbenzene and butylbenzene, and ethylene, propylene, butene, pentene, hexene, heptene, dodecene and tridecene; in Examples, (1)-(4) ethylene and toluene (Na, K, Rb or Cs/MgO catalyst) gave 3-phenylpentane and 3-phenyl-3-ethylpentane, (5)-(9) propylene and toluene (K/MgO, Cs/BaO, Rb/CaO or K/ZnO) gave isobutylbenzene, (10) ethylene and cumene (K/MgO) gave 2-methyl-2-phenylbutane and (11) heptene-1 and toluene (K/MgO) gave 2-methyl-1-phenylheptane.
Patent GB-570192-A (GB)
Title: Improvements in or relating to power transmission toothed gearing
IPC: F16H1/26
Filed: 1943-08-27
Abstract: 570,192. Toothed gearing. FLETCHER, G. H., and METROPOLITANVICKERS ELECTRICAL CO., Ltd. Aug. 27, 1943, No. 14055. [Class 80 (i)] Relates to toothed gearing for use in situations where strict parallelism between axes cannot be ensured during power transmission and consists in rendering the teeth flexible in a circumferential direction by forming them as axial cantilever projections by partly grooving the rim portion on which the teeth are formed. The hub portion 1 of the wheel is joined by a web 2 to the rim 3 integral with the teeth 4. Radial grooves 5 are cut into the rim between the teeth and may have parallel sides as in Fig. 3A or may be wedge-shaped, the inner ends 6 of the grooves being rounded. If the wheel be " solid the grooving may extend downwardly as at 5a, Fig. 2, beyond the socalled rim portion. The grooves 5c, Fig. 5, have their inner ends 7 curved in the radial direction and are so cut as to remove a portion 8 of the active profile of the ends of the teeth, so that when contact is at the pitch line it does not occur also on the cantilever ends of the teeth radially inwards from the pitch line. Both ends of the teeth may be treated in the manner described in which case the grooves may be of different axial lengths. Specification 1665/12, [Class 80 (i)], is referred to.
Patent GB-528656-A (GB)
Title: Lubricating device for aircraft engines
IPC: F16N29/02
Filed: 1939-05-11
Abstract: 528,656. Lubricating internal - combustion engines. BAYERISCHE MOTOREN WERKE AKT.-GES. May 11, 1939, No. 14118. Convention date, May 11, 1938. [Class 12 (iii)] Lubricant is ejected on to the driving mechanism of an. internal combustion engine through a nozzle 2 which enters the hollow portion 4 of the crankshaft. The nozzle 2 has radial bores 1 through which oil enters the nozzle from the space 4, and a heat sensitive element 5 moves the nozzle 2 longitudinally so that the wall 6 of the space 4 controls the opening of the bore 1 to permit a discharge of oil through the nozzle 2 when the engine is cold and reduce the discharge when the engine is warm.
Patent GB-495801-A (GB)
Title: Improvements in or relating to circuits using gas filled electric discharge tubes
IPC: H01J17/04
Filed: 1937-05-21
Abstract: 495,801. Circuits using gas-discharge tubes. STANDARD TELEPHONES & CABLES, Ltd. (Western Electric Co., Inc.) May 21, 1937, No. 14183. [Class 40 (v)] In arrangements o gas - filled discharge tubes comprising a cathode, control grid and two anodes, pre ferably of the type described in Specification 437,167 ; the cir cuit in which it is de sired to produce a signal is connected to the anode with the highest breakdown voltage, and a circuit is connected to the other anode so that a discharge to it, initiated by a signal, transfers to the anode with the higher breakdown voltage and produces the signal output. The anodes A1, A2, Fig. 1, are maintained at positive potential and the inductive load L is connected to the anode A2 which has the highest breakdown voltage characteristic. The signal is applied by means of transformer T to the grid G, suitably biassed by potentiometer P and initiates a discharge through resistance R from A1, the discharge transferring to the anode A2 as rapidly as the inductance allows. Fig. 3 shows two tubes arranged so that the anodes A1 All, are connected in a multivibrator circuit with resistance-condenser combinations R, C, R<1>, C<1>, the discharge transferring as described to the anodes A2, A<1>2, and periodically operating the relay IR.
Patent GB-358510-A (GB)
Title: Manufacture of derivatives of cellulose and other carbohydrates
Filed: 1930-05-08
Abstract: Relates to the production of hydroxyalkyl ester of cellulose and other carbohydrates of the formula (C6H10O5)x and consists in hydroxyalkylating the carbohydrate under mild conditions so that not more than one hydroxyalkyl group is introduced into the molecule (C6H10O5), and then esterifying the product.  The partial hydroxylation may be carried out by the use of alkylene oxides, epichlorhydrin &c. under regulated conditions, e.g. by keeping the temperature below 80 DEG  C., avoiding excess of alkylating agent, shortening the time of reaction or by carrying out the reaction under normal or reduced pressure.  Partial hydroxyalkylation may also be effected by the action of limited quantities of alkylene halohydrin on alkali cellulose.  The hydroxyalkyl ethers contain 1-3 hydroxyalkyl groups for each 3 (C6H10O5) molecules and mostly shows the unaltered structure of the original material.  They may be esterified in any known manner; e.g. nitrates may be obtained by treatment with nitric acid alone or mixed with sulphuric acid; and organic acid esters may be obtained by treatment with an acid anhydride and an acid preferably in presence of a catalyst such as sulphuric acid or zinc chloride, or by treatment with an acid chloride in presence of a tertiary base.  Cellulose acetates directly soluble in acetone may be obtained which show diminished sensitiveness to water.  In examples (1) 100 parts cotton linters and 30 parts ethylene oxide are kneaded together until the ethylene oxide is used up; the hydroxyethyl cellulose, which contains one hydroxyethyl group per molecule (C6H10O5) of cellulose is the esterified for 2-3 hours with 200 parts acetic anhydride, 100 parts butyric acid, 300 parts glacial acetic acid, and 8 parts sulphuric acid, yielding a mixed aceto-butyric ester directly soluble in acetone; (2) 100 parts cotton linters, 60 parts ethylene oxide and 5 parts diethylaniline are stored together for 3-4 hours in a pressure vessel at 40-50 DEG  C., and excess of ethylene oxide and diethylaniline is removed by feebly acidified water or an organic solvent; the hydroxyethyl cellulose contains about 1 hydroxyethyl group per 3 molecules of cellulose and is acetylated by treatment in a pressure vessel at 34-45 DEG  C. with 250 parts acetic anhydride, 200 parts liquid sulphur dioxide, and 20-30 parts zinc chloride; after about 3 hours the mass is precipitated and worked up in the usual manner, yielding a product soluble in acetone.  Reference is made to German Specifications 363,192 and 368,413.  The Specification as open to inspection under Sect. 91 (3) (a) includes a further example involving the treatment of cotton linters with ethylene oxide at 50 DEG  C. followed by acetylation. This subject-matter does not appear in the Specification as accepted.
Patent GB-567643-A (GB)
Title: Improvements in or relating to cooling devices for the oil systems of internal combustion engines
IPC: F01M5/00
Filed: 1942-10-09
Abstract: 567,643. Cooling radiators for aircraft. BRITISH THERMOSTAT CO., Ltd., GREEN, W. E., and HURST, W. F. F. MARTIN-. Oct. 9, 1942, No. 14202. [Class 64 (iii)] [Also in Group XXIX] In valve apparatus for controlling the oil flow and the shutters of an air-cooled oil cooler, a piston 5 is acted upon by the oil pressure to allow oil to flow from the inlet' 2 through a passage 6 and the inlet 9 to the cooler byepass and at the same time move the levers operating the shutters. A sleeve valve 10 controlling the outlet 12 to the cooler is controlled by a thermostat 23 operating under normal increase of temperature and by a thermostat 24 set to operate at the highest safety temperature. The oil pressure first moves the piston 5 against a spring 21 to close the shutters and then upon further movement against a spring 17 the piston opens the passage 6 to the byepass. When the oil is heated to a certain predetermined temperature, the sleeve valve 10 is moved against a spring 30 by the thermostat 23 to uncover the inlet part 12 to the cooler, and the consequent fall in pressure allows the piston 5 to return and close the byepass and open the shutters. To prevent the diversion of the oil to the byepass due to high oil pressure set up by " coring," the end of the sleeve valve 10 is formed to close the byepass port at high oil temperatures. The shutters may be operated through a hydraulic relay.
Patent GB-201314-A (GB)
Title: Improvements in or relating to steering gears for motor vehicles
IPC: B62D3/02
Filed: 1922-05-19
Abstract: 201,314. Prestwich, J. A. May 19, 1922. Steering-gear comprises an arm carried by the lower end of the steering column and slidably connected to a member connected to the steering arm and pivoted to a fixed point in such a way that the angular movement of the steering column is greater than the angular movement of the member pivoted to a fixed point. The ratio of the movement of the road-wheels to the steering- wheel is increased as each extremity of the range is approached. The arm d on the steering column c is of channelled cross-section and carries the sliding piece h pivotally connected to the lever f which is pivoted to the bracket b and connected to the steering arm through the ball-joint m. According to a modification the arm on the steering column carries a socket in which the member pivoted to the fixed point operates.
Patent GB-595396-A (GB)
Title: Process for the treatment of felt and articles made therefrom
Filed: 1942-10-10
Abstract: Felt articles are given one or more surface coatings of an aqueous emulsion of a polyvinyl compound or cellulose derivative to form a surface skin impermeable to water and oils, the products being used as substitutes for rubber articles.  Improved water-resistance is obtained by heating the product, e.g., in a warm polished mould, or applying one or more coats of lacquer containing the same binding agent as the emulsion.  Open or soft felts may be first treated with an emulsion containing a large quantity of china clay to seal the pores.  The vinyl compound, which may be emulsified before or after polymerising, may be a polyvinyl acetal or a polymer or copolymer of vinyl chloride, vinyl chloracetate, styrene, esters or nitriles of acrylic or methacrylic acid, e.g., methyl methacrylate.  The cellulose derivative may be the nitrate, acetate, butyrate, propionate, a mixture of esters, benzyl or ethyl cellulose.  The emulsions may contain solvents, plasticisers, and pigments. Specified emulsions contain (i) polymethyl methacrylate, dibutyl phthalate, pigment, and glue as stabiliser (ii) polyvinyl acetal, iron oxide, dibutyl phthalate or tricresyl phosphate and glue or casein (iii) ethyl cellulose, dibutyl phthalate, a drying oil or castor oil, and iron oxide.  Bushes, bearing pads, washers, packings, sealing blocks, shock absorbers, buffers, engine mountings, and draught-excluders may be made.
Patent GB-389313-A (GB)
Title: Improved ventilating means for the laminated stators and rotors of electrical machines
IPC: H02K5/20
Filed: 1932-05-19
Abstract: 389,313. Cooling and ventilating dynamo-electric machines. EHRMANN, P., 60, Rue Madame, Paris. May 19, 1932, No. 14266. Convention date, May 19, 1931. [Class 35.] A laminated core for a dynamo-electric machine is provided with sets of ventilating passages at different distances from the winding slots, those nearer to the winding slots being of less peripheral length and greater radial height than those more remote, so that the different passages are of the same cross section ; the passages at the same distance from the axis may also be connected by peripheral slots in the laminµ and passages are arranged for conveying air to and from the whole of the passages in the laminµ. Figs. 6 and 8 show laminµ for producing such a core. They have two sets of perforations 6<1>, 6<2> and by combining them and staggering the laminµ of the form shown in Fig. 6 with respect to each other passages of the type described are produced. Air introduced by the fan 4, Fig. 1, passes in part to the air gap of the machine and in part to an air inlet trunk 13 divided into passages 13<1> .. 13<4>, Fig. 2. From these it passes to spaces 7<2>, 7<4> between the packs of ]aminµ, through the passages formed by the perforations 61, 62, and by spaces 7<1>, 73 between other packs of laminµ to spaces 15<1>, 15<2>, and thence by openings 16 between the passages 13<1>, 13<2>, &c. to a space 17, escaping by an opening 5 in the casing. To prevent the currents entering or issuing from the different packs of laminµ from interfering with each other special endplates having staggered openings may be employed, as shown in Fig. 5, or some of the passages may communicate by tubes 20, Fig. 9, .others being stopped by plugs 80. Alternatively inclined partitions 21, Fig. 11, may be placed in the passages. These may be made in one piece so as to be easily withdrawn for cleaning. Specifications 142,828, 162,281, and 214,944, [all in Class 35, Dynamo-electric generators &c.], are referred to.
Patent GB-1114729-A (GB)
Title: Syringe
IPC: B01L3/02
Filed: 1967-03-29
Abstract: 1,114,729. Syringes. H. STRUERS CHEMISKE LABORATORIUM. March 29, 1967 [March 30, 1966], No.14273/67. Heading F1R. A syringe for dispensing measured quantities of chemicals comprises a glass plunger 3 biased outwardly by a spring 13 and movable inwardly by finger pressure on head 4, inward movement of the plunger being limited by its engagement with the bottom of the glass barrel 1 and outward movement being adjustably limited by a non- circular disc 11 clamped between nuts 8 and 9 on a threaded column 7 mounted on a plate 5 clamped on to a roller 2 on the barrel 1 by a plate 6, e.g. by screws, disc 11 being angularly adjustable out of the path of plunger 3 to permit removal of the plunger from the barrel. Disc 11 may be of soft synthetic resin, e.g. polytetrafluorethylene. A lock nut 10 may be provided. The rear faces of roller 2 and head 4 are plane ground. In the embodiment of Fig.6, for diluting a chemical, a further, readily rotatable disc 15 is mounted on a sleeve or reduced portion of nut 9 beneath disc 11, a diluting liquid being drawn into the syringe until the plunger engages the lower disc 15, which is then rotated clear of the plunger for the chemical to be diluted to be drawn into the syringe until the plunger engages the upper disc 11.
Patent GB-1503811-A (GB)
Title: Azo dyes
IPC: C08K5/22
Filed: 1975-04-08
Abstract: 1503811 Monoazo dyes containing ozadiazole residues BASF AG 8 April 1975 [9 April 1974 6 Dec 1974] 14335/75 Heading C4P [Also in Division C2] Novel dyes of Formula I where K is the radical of a coupling component, R<SP>3</SP> and R<SP>4</SP> are H, Cl, Br, alkyl, alkoxy, acetyl, acetylamino, propionylamino, benzoylamino, CF 3 , NO 2 , CN, alkyl-sulphonyl, optionally substituted arylsulphonyl, COOH, CONH 2 , SO 2 NH 2 , N-substituted carbamoyl or sulphamoyl, carbalkoxy, or quinazolonyl which is optionally substituted by Cl, Br or NO 2 , R<SP>2</SP> is H, CONHR<SP>1</SP> or SO 2 NHR, X is or -N = C(R)-O-, R is an optionally substituted aliphatic, cycloaliphatic, araliphatic or aromatic hydrocarbon radical or an optionally substituted heterocyclic radical or a phenyl- or halophenylsubstituted carbamoyl radical and R' is H or as R, provided that if R<SP>2</SP> is as Formula "B" above, CONHR' or SO 2 NHR, are prepared by azo coupling. Dyes of Formula I in which the coupling component is a 2- hydroxy-3-naphthoic acid amide may also be prepared by reacting the corresponding free acid with thionyl chloride to give the acid chloride and reacting this with an amine. The dyes of Formula I which are pigments may be used to colour printing inks, surface coatings, plastics materials or paper and other dyes of Formula I are disperse dyes for polyester fibres. A variety of shades is obtained.
Patent GB-683918-A (GB)
Title: Improvements in or relating to the production of melamine-formaldehyde condensation products
Inventor: SWANN GEOFFREY
IPC: C08G12/26
Filed: 1950-06-08
Abstract: Melamine and formaldehyde are condensed under alkaline conditions and the condensation completed under acid conditions in presence of succinimide or a formaldehyde pre-condensate thereof and at least 4 mols. per mol. of melamine plus 1 mol. per mol. of succinimide of an aliphatic alcohol having 3-5 carbon atoms, the total proportion of formaldehyde and succinimide being 6.0-6.5 mols and 0.1-0.5 mols. respectively per mol. of melamine. Preferably, the melamine is condensed with formaldehyde in the first stage and the succinimide-formaldehyde condensate added at the beginning of the second stage.  In example (1) 1 mol. melamine was dissolved in 6 mols. aqueous formaldehyde, the pH adjusted to 8-8.5 and the mixture boiled.  6-8 mols. of butanol and a solution obtained by boiling 0.5 mols. of succinimide with 0.5 mol. of neutral aqueous formaldehyde were then added and the pH adjusted with phosphoric acid to 5.5-6.5. Water was boiled off, butanol being condensed and returned to the mixture.  The clear solution obtained could be diluted with butanol or an aromatic hydrocarbon.  Example (2) is similar but all the formaldehyde is added in the first stage and succinimide itself in the second stage.
Patent GB-1185841-A (GB)
Title: Method and Apparatus for Cutting by Fusion Stacks of Sheet Material, Especially Sheets of Metal
Inventor: DODGE ROBERT WILLIAM
IPC: B23K7/00
Filed: 1967-03-29
Abstract: 1,185,841. Cutting by fusion. STACK BURNERS Inc. 29 March, 1967, No. 14371/67. Heading B3V. A stack of sheets S1-S6, Fig. 15, particularly of metal, are severed by a fusion cutting tool N, and a stream G of cooling fluid is directed into the cut surface. The cooling fluid which is preferably water forms barrier films R1-R5 between the sheets to restrict dissipation of the energy of the cutting flame F which is produced by a burner N. The sheets may range from <SP>1</SP>/ 16  to “ inch in thickness and are supported on beam members 2, 4, Fig. 1. C clamps 18-28 are secured around the edges of the stack and adjacent the cut, and the sheets are pressed together by feet 62, 62<SP>1</SP> actuated by compressed air or hydraulic cylinders 58, 58<SP>1</SP> suspended from carriages 46, 48 running along a gantry 42. Serrated locking surfaces (47), Fig. 7 (not shown), on the carriages are arranged to grip the gantry when pressure is applied to the feet 62, 62<SP>1</SP>. Cooling water is supplied from a reservoir 80 to an annular receptacle 84 surrounding the burner nozzle N and rotatable thereon. A pipe 90, Fig. 15, delivers the cooling stream G to a position directly adjacent to but separated from the cutting flame F. The supply of coolant may be intermittent. Before cutting is started, a hole (H) is drilled through the stack by a drill (D), Fig. 11 (not shown), held to the stack by a magnetic base. During cutting the positions of the feet 62, 62<SP>1</SP> are changed so as to be near the cut surface. The burner is mounted on a cutting machine M and is preferably controlled by a tracer moving over a drawing. After cutting, the severed part (96<SP>1</SP>) is lifted out by a magnet (97), Fig. 4 (not shown), suspended from a hoist 98. The cutting tool is preferably an oxygen/acetylene burner but alternatively may be a plasma jet. Weights may be used instead of clamps to press the sheets together.