baber/WOPTO huggingface dataset:
Patent GB-1292234-A (GB)
Title: Apparatus for protecting high voltage equipment from discharge damage
Inventor: MCNITT DAVID HUGH
IPC: H02H7/00
Filed: 1971-04-19
Abstract: 1292234 Protective arrangements FORD MOTOR CO Ltd 19 April 1971 [16 Feb 1970] 20982/71 Heading H2K In an arrangement for protecting high voltage equipment from electrical discharges, the equipment comprising a high voltage supply circuit 22, 26, 30 and a transmission cable 10 between the supply circuit and a load, the cable core 12 being surrounded for most of its length by an earthed shield 14, a conductive element 38 is positioned in proximity with an unshield portion of the core and forms with the core a capacitor which discharges through sensing means effective to open a circuit-breaker 32 in the supply circuit when a discharge occurs from the equipment. The conductive element 38 may be formed by cutting the braided wire shield 14 at two spaced apart locations to leave a length 38 separated from the remainder. The sensing means comprises a neon tube 56 through which the capacitor discharges to operate a detector 70 which may comprise a silicon controlled rectifier operative to open the circuit-breaker 32. A spark-gap 42 conducts excessive discharge to earth, a diode 60 limits the voltage applied to the detector 70 and a diode 66 by-passes negative voltages due to " ringing ". The equipment may be D.C. and include a rectifier 22.
Patent GB-647181-A (GB)
Title: A process for the recovery of trimethyl silicon chloride
IPC: C07F7/20
Filed: 1948-08-09
Abstract: Trimethylsilicon chloride is separated from a trimethylsilicon chloride-silicon tetrachloride azeotrope by reacting the silicon tetrachloride in said azeotrope with trimethylethoxy silane in the liquid phase in the presence of an acidic catalyst, whereby silicon tetrachloride is converted to a silane containing an ethoxy radical and the trimethylethoxysilane is converted to trimethyl silicon chloride, and recovering trimethylsilicon chloride from the reaction mixture.  The acidic catalyst may be hydrogen chloride, sulphuric acid or zinc chloride.  Between 1 and 4 mols of trimethylethoxy silane per mol. of silicon tetrachloride may be employed.  A number of examples are given.ALSO:Trimethylsilicon chloride is separated from a trimethylsilicon chloride-silicon tetrachloride azeotrope by reacting the silicon tetrachloride component with trimethylethoxy silane in the liquid phase in the presence of an acidic catalyst, whereby silicon tetrachloride is converted to a silane containing an ethoxy radical and the trimethylethoxy silane is converted to trimethylsilicon chloride, and separating the trimethylsilicon chloride in the mixture by distillation.
Patent GB-1088728-A (GB)
Title: Polycarbonamide based compositions and their use as bearing materials
IPC: C08L79/08
Filed: 1965-05-18
Abstract: Compositions suitable for use as bearing materials comprise (1) an aromatic polyimide or a precursor of such a polyimide or both having uniformly dispersed therein (2) a halocarbon resin having the recurring unit <FORM:1088728/C3/1> where X is chlorine or fluorine and (3) a polyamide which is either a linear condensation polyamide of an aliphatic dibasic acid of 4 to 18 carbon atoms and an alkylene diamine of 2 to 10 carbon atoms, or an aromatic polyamide having the recurring structure unit:  <FORM:1088728/C3/2> wherein R1 is hydrogen or alkyl of 1 to 4 carbon atoms and Ar1 and Ar2 are each a divalent aromatic radical, whose chain-forming bonds are other than ortho to one another. The compositions may be prepared by mixing at least one diamine of the formula H2N-R1-NH2 with at least one tetracarboxylic dianhydride, in a solvent for at least one of these reactants to form a polyamide-acid and mixing with the polyamide-acid the required amount of the halocarbon resin and the polyamide.  The polyamide-acid may then be converted to polyimide by the action of heat or by the action of a lower (C1- 4) fatty acid anhydride or an aromatic monobasic acid anhydride preferably in association with a tertiary amine.  Suitably, 55-80 parts of aromatic polyimide or 60-87.5 parts of its polyamide-acid precursor are mixed with 20 to 40 parts of halocarbon resin and 1 to 15 parts of the polyamide by weight. The polyimides and polyamides used are prepared in conventional manner using conventional reactants of which numerous examples are given. Representative of the halocarbon resins are homopolymers of tetrafluoroethylene and chlorotrifluoroethylene, copolymers of tetrafluoroethylene with hexafluoropropylene or a telomer of the foregoing monomers with an active telogen such as methanol, methylcyclohexane, chloroform, carbon tetrachloride or trichlorotrifluoroethane.  In the Examples (1), a telomer of tetrafluoroethylene and methyl cyclohexane and a solution of poly-(m-phenylene isophthalamide) N,N-dimethylacetamide are added to a solution of the polyamide-acid of pyromellitic dianhydride and 4,41-diaminodiphenyl ether in N,N-dimethylacetamide and the composition heated to 300 DEG  C. to convert the polyamide-acid to polyimide, (2) the method of Example 1 is repeated but using different proportions, (3) a telomer of tetrafluoroethylene and trichlorotrifluoroethane and poly-(hexamethylene adipamide) are added to the polyamide acid solution of Example 1 and the polyamide-acid is converted to polyimide in the presence of acetic anhydride and isoquinoline and (4) the polyamide-acid solution and polyamide of Example 1 are combined with the halocarbon telomer of Example 3.
Patent GB-1304713-A (GB)
IPC: E05F15/04
Filed: 1970-05-01
Abstract: 1304713 Door operating appliance AMERICAN METAL CLIMAX INC 1 May 1970 [7 July 1969] 21093/70 Heading E2M [Also in Division F1] A door operator, e.g. for mounting in a door lintel, comprises two cylinders A, B each having a piston 122, 123 located intermediate the cylinders in the door closed position and each moving in opposite directions in their cylinder, and each having a one-way valve 126, 127 and being connected by a rack and pinion (not shown) in a housing 104 to a door shaft; the cylinder A having an inlet port 137, interconnected piston by-pass ports 135, 136; port 135 being covered by piston 122 in the door closed position and a throttle port 140: cylinder B having a throttle port 140' connected to a fluid return 134, 36: and first means responsive to a door opening signal (e.g. from a mat switch) for connecting the inlet port 137 to a source of fluid pressure and second means effective, in the absence of the signal, to connect the throttle port 140 to the fluid return. As shown, the first and second means comprises a spring loaded spindle valve 144 in the fluid pressure line 35; when the pressure is removed, the spindle moves to the right in Fig. 15 thus connecting throttle port 140 via port 149 to the fluid return 134. Cylinder B may contain a second throttle port 139', connected to the fluid return 134, which is covered by the piston shortly before the door open position. The throttle ports may contain needle valves and cylinder A may have a second throttle valve 138 connected to the throttle 140. The interconnected ports 135, 136 permit "panic" opening or closing of the door i.e. manual opening or closing in a direction opposite to the normal one, Figs. 17, 18 (not shown). Each cylinder may include a second set of ports corresponding to the above mentioned ports of the other cylinder, and a manifold plate 132 sandwiched between a valve block 133 of the spindle valve 144 and a port surface 130 of the cylinder; the manifold selectively rendering one set of ports of each cylinder operative for right hand or left hand door movement. A spring loaded door closer piston may cooperate with a cam on the door shaft. A heater may be provided for the pressure fluid, circulation of which lubricates the apparatus. The fluid is supplied under pressure by a power pack (see Division Fl). The door may be opened or closed manually if the power is off.
Patent GB-892897-A (GB)
Title: Asphalt and amine additives
Inventor: FALKENBERG CHARLES WILLIAM
IPC: C08K5/20
Filed: 1959-06-19
Abstract: An amidoamine soap of the formula <FORM:0892897/IV (b)/1> in which R1 and R5 are C11-19 alkyl or alkenyl groups or abietyl groups, R2, R4 and R14 are hydrogen or C1-4 alkyl groups, R3 and R13 are C2-18 alkylene radicals and x is an integer from 0 to 10, is prepared by reacting an amine R2NH-[R3-NH]x-R13 -NR4R14 with two moles of a C12-20 fatty acid or abietic acid (tall oil) to form a salt <FORM:0892897/IV (b)/2> which is then heated until one of the soap groups decomposes to an amide group.  Specifications 607,604 and 677,935 are referred to.ALSO:A bituminous composition comprises asphalt and an anti stripping additive which comprises an amidoamine soap of the formula:- <FORM:0892897/V/1> in which R1 and R5 are alkyl groups with 11 to 19 carbon atoms or are abietyl groups, R2, R4 and R14 are hydrogen or alkyl groups with 1 to 4 carbon atoms, R3 and R13 are alkylene radicals with 2 to 18 carbon atoms, and x is an integer from 0 to 10, together with 2,5 to 15 equivalent weights of an amine per equivalent of the acid in the soap, said amine containing 2 to 18 carbon atoms. 0,1% to 3% by weight of this additive is added to blown or unblown petroleum or mineral asphalt.  Examples of the amidoamine soaps are oleylamidoamine oleate, the abietic acid compound of ethylene diamine, the stearic acid compound of diethylene triamine and compounds in which the NH2 in the above examples is the residue of a tertiary amine.  The acid part of the soap is a higher fatty acid or abietic acid.  The reaction between the amine and the acid is effected at 150 DEG C. to form the amidoamine soap and the excess amine is then added to form the anti stripping additive.  Asphalts containing the additive, when mixed with limestone or siliceous aggregates give good adhesion. Specifications 607,604, 677,935 and U.S.A.  Specification 2,663,648 are referred to.
Patent GB-127512-A (GB)
Title: Improvements in or relating to Refrigerating Apparatus.
Inventor: KILBURN BERTRAM EDWARD DUNBAR
IPC: F25B9/00
Filed: 1918-12-19
Abstract: 127,512. Kilburn, B. E. D., (Sulzer FrÞres Soc. Anon.). Dec. 19, 1918. Refrigerating, compression machines and processes for.- An arrangement of refrigerating- apparatus for breweries and dairies comprises two compression machines, working in combination, but with independent working - fluid circuits, the cooling-water from the condenser a of the first machine being delivered in part to the evaporator e of the second machine to be cooled for re-use in the first condenser, and in part to the condenser c of the second machine, where it becomes heated, so as to be available as feed-water or for other purposes. The first machine may employ ammonia or carbonic acid, and the second, working at a higher pressure and temperature, sulphurous acid or ethyl chloride. The return pipe f<3> for the cooled water may be connected to the fresh-water supply pipe a<1>.
Patent GB-498150-A (GB)
Title: Improvements in dust cores for inductance coils
IPC: H01F1/26
Filed: 1937-07-30
Abstract: 498,150. Magnetic cores. SIEMENS & HALSKE AKT.-GES. July 30, 1937, No. 21220. Convention date, July 31, 1936. [Class 38 (ii)] Dust cores for inductance coils are prepared using as the binder a polymerized material, the molecule of which is substantially a onedimensional chain but which has attached to the chain strongly polar groups such as chlorine, nitrogen, hydroxyl or carboxylic ester groups. Suitable polymeric materials are polymerized acrylic acid esters or polymerized vinyl compounds containing chlorine or nitrogen. Specification 418,096, [Group IV], is referred to
Patent GB-226849-A (GB)
Title: Improvements in or relating to brackets for supporting the pillars of the rear screens of motor vehicles
IPC: B60J1/04
Filed: 1924-05-21
Abstract: 226,849. Pearce & Sons (Brassfounders), Ltd., G. W., and Jones, A. E. E. May 21, 1924. Windscreens.-A bracket for supporting the vertical pillar 14 of an arm 15 carrying a multipanel windscreen of a motor vehicle comprises a plate 1 adapted to be secured to the vehicle body, a tubular portion 3 formed in or attached to the plate 1, a liner 5 adapted to be inserted and fixed in the portion 3 and provided with one or more longitudinal slots 6 so as to render the liner contractible, a split collar 8 adapted to embrace the liner about its slotted portion, and means, such as bolt 12 passing through lugs on the collar 8, for contracting the liner 5 into frictional engagement with the pillar 14. The slots 6 are preferably closed at both ends, and the collar 8 may be cast integral with the tubular portion 3 or liner 5.
Patent GB-1469104-A (GB)
Title: Helium-cooled nuclear reactors
IPC: G21C1/12
Filed: 1973-05-04
Abstract: 1469104 Nuclear reactors UNITED KING- DOM ATOMIC ENERGY AUTHORITY 26 March 1974 [4 May 1973] 21279/73 Heading G6C  In a helium-cooled nuclear reactor, especially an HTR, corrosion of in-core carbon over which coolant flows is minimized by selecting pore diameter of exposed carbon such that the coolant flow has a velocity profile in which a sub-layer of laminar flow over the exposed carbon surface is maintained. Pore diameters of less than 25Á are preferred.
Patent GB-250094-A (GB)
Title: Improved construction of cigarette or cigar mouthpiece or holder
IPC: A24F7/00
Filed: 1925-08-26
Abstract: 250,094. Weintraud, A. Aug. 26, 1925. Cigar and cigarette holders.-A holder A in the form of a mouthpiece adapted to receive the end of a cigarette or cigar C comprises a tube provided with a single opening such as B in its side wall, or as shown, with two such openings. One end of the tube may be formed with an internal flange D to form an abutment for the cigarette or cigar. One or both of the terminal rings A', A<2> may be cut away on one side, or the outer ring A<2> may be dispensed with entirely, the openings B in this case being of the form shown or having curved edges. One or both of the ends of the holder may be formed with notches and the holes B may be of oval form. The holder may be formed with a conical extension adapted to be gripped by the teeth.
Patent GB-690635-A (GB)
Title: Control of vacuum in the inlet pipe of an internal combustion engine
IPC: F02M23/09
Filed: 1950-08-30
Abstract: 690,635. Auxiliary air admission; silencing gaseous currents. STROUD, F. H. Aug. 30. 1950, No. 21427/50. Class 7 (ii). An extra-air admission device comprises an adjustably spring-loaded, suction-actuated piston 20 having a projection 21 normally closing an air inlet 13 and air-flow ports 22 in its front face, an adjustable tube 26 limiting the piston travel, and an adjustable rod 27 controlling ports 41 in the tube 26 through which the air flows to an outlet port 14 connected to the intake manifold. A screen 16 and an inlet silencer 17 containing steel wool are fitted over the air inlet aperture, and the piston 20 opens the inlet 13 at a predetermined intake manifold suction above idling suction to allow air to flow through the ports 22 and ports 40, 41, to the outlet 14. The loading of the piston 20 is adjusted by a screwed abutment 30 in which the tube 26 is screwed, the lock-nuts 33. 34, 35 for the adjustable members 30. 26. 27 being anodized different colours. The valve 20 is of brass and the remaining parts preferably of aluminium. The device is held in position on a nipple 42, screwed into the intake manifold and having a coned part 43 which is a friction fit in the outlet port 14, by a bracket comprising straps 45, 46 hooked together at 47 and tightened by a bolt 53, the part 45 fitting over the casing 10 and the part 46 being flattened at 49 to engage under the head of the nipple 42.
Patent GB-676345-A (GB)
Title: Method of making metal articles by powder metallurgy
Inventor: RICE RICHARD EDMUND
IPC: B22F3/02
Filed: 1950-08-31
Abstract: 676,345. Powder metallurgy. ISTHMIAN METALS, Inc. Aug. 31, 1950, No. 21512/50. Class 83 (iv). [Also in Group V] A method of making a metal article, having edges free from burrs, from powdered metal by double pressing comprises moulding the metal powder into a form in which the junction of the surfaces intersect to form an edge or into a form whereby a narrow intersurface adjoins the said surfaces, compressing the moulding to chamfer the said edge, sintering and then pressing to final dimensions, the chamfer being diminished to form a sharp edge free from burrs. The upper and lower punches 2 and 3 of a press have edges 2<SP>1</SP> and 31 of triangular crosssection so that metal powder 4 in a die 1 when compressed forms a compact having bevelled edges c, Fig. 5, and small burrs 21. The compact is sintered and then pressed to final dimensions by punches 6 and 7, Fig. 6, having square edges whereupon the burrs 21 are compressed into the sides of the compact as shown in Fig. 14. Approximately one seventh of the chamfered portion lies in the side surface of the article and approximately one half in the end surface thereof. Alternatively, after sintering the compact may be pressed into an article having chamfered edges by using punches 10 and 11, Fig. 9, having lips 10<SP>1</SP> of smaller dimension than the chamfers already on the compact. When using electrolytic iron powder a pressure of between 15 and 40 tons per square inch is used for the first pressing and between 45 and 100 tons per square inch for the second pressing. The iron powder is mixed with 1 per cent of stearic acid and the sintering is carried out in an atmosphere of dry hydrogen or cracked ammonia (75 per cent H 2  and 25 per cent N 2 ) at 2000‹ F. for a period of one hour and subsequently cooled in the sintering atmosphere so that the sintered piece is bright and free from oxide. The piece may be lubricated with stearic acid or other lubricant before entering the die for the final pressing. Both pressings are carried out cold.
Patent GB-582765-A (GB)
Title: Improvements in apparatus for the dry spinning of artificial filaments from alkaline casein solutions
IPC: D01F4/00
Filed: 1943-12-23
Abstract: <PICT:0582765/IV/1> <PICT:0582765/IV/2> In the dry spinning of a plurality of artificial filaments from an alkaline casein solution, lateral movement of air in the spinning shaft 1, Fig. 1, and consequential disturbances in the spinning operation are substantially prevented by providing the shaft at its upper end with a plurality of apertures 5 through which the air can escape uniformly in all directions, the amount of air which is allowed to escape being controlled by a perforated shutter 6.  The lower end of the shaft 1 is provided with a heating device 12 and air is admitted into the shaft from chamber 13.  In a modification (Fig. 2) air escaping from apertures 19 is led through a drying tower 24 to which a drying agent, e.g. sulphuric acid, is supplied through nozzle 25.  The dried air is then returned to the base of the spinning shaft which it enters through a ring of holes 29.
Patent GB-356873-A (GB)
Title: Improvements in mill casings
IPC: B02C13/282
Filed: 1930-07-16
Abstract: 356,873. Casings for impact pulverizing mills. HARTSTOFF-METALL AKT.-GES., 39, Kaiser Wilhelm Strasse, C÷penick, and KRAMER, E., 26, Bayreuther Strasse, both in Berlin. July 16, 1930, No. 21571. [Class 59.] In a mill casing for centrifugal disintegrating or cyclone mills the lining, formed from manganese steel or chilled castings, is fixed to an outer frame or casing in such manner as to provide for the direct access of a cooling or heating medium to the outer surface of the lining, packing being provided between the frame and lining. The casing is built up of frames 1, 2, 3 secured by flanges 24, 25 and each frame is provided with a number of wearresisting plates 18, 19 &c. which may be spaced from the casing and are secured thereto by bolts 21 engaging nuts 20 or by eye-bolts 10 engaging flanges 9. Each plate beds in to a packing strip 16 so that the space between the plate and frame may be filled with a heating or cooling medium. The frame may be perforated so that plates are exposed to the atmosphere.
Patent GB-188412-A (GB)
Title: A combined door lock and hand-chain lock for lifts operated by means of hand-chains or hand-ropes
IPC: B66B13/18
Filed: 1921-08-17
Abstract: 188,412. Jordan, H. Aug. 17, 1921. Chain stops and holders; rope grips.-A chain or rope a is gripped between a fixed member u and a tongue v pivoted there to at v<1>.
Patent GB-422634-A (GB)
Title: Improvements in or relating to detachable buttons, or studs and the like
IPC: A44B1/32
Filed: 1933-08-04
Abstract: 422,634. Detachable buttons &c. CHARLESWORTH, S. E., 43, Asline Road, Sheffield. Aug. 4, 1933, No. 21900. [Class 44] A button, stud, or like fastening having two separable portions comprises a button portion 3 having a stem 4 with a locking head 10 adapted to be inserted through a slot 9 in a hollow base 2 enclosing a flat spring 6. The head has a pointed tip 12 adapted to engage an indentation or hole at the centre of the spring 6, and after insertion through the slot 9, it is rotated so that its shoulders 11 engage recesses 8 in the base. The base may be attached to a fabric &c., 14 by passing the neck 7 through the fabric, placing a loose washer 15 round the neck, and swaging the top of the neck over the washer. The button part is attached to a fabric 14<a> by two plates 3<a>, 3b, mounted on the stem 4<a>.
Patent GB-154363-A (GB)
Title: Improved means for regulating the gas supply to atmospheric gas burners
IPC: F16K5/12
Filed: 1919-09-06
Abstract: 154,363. Yates, H. J., Howlett & Co., M., and Dolphin, J. Sept. 6, 1919. Gas supply; burners, regulating.-In the gasregulating means for burners described in Specification 131,631, the sliding piston valve A is provided with tapered longitudinal slits 8 which widen towards the outlet end of the valve. The gas nipple 2x may be that described in Specification 3868/15.
Patent GB-850756-A (GB)
Title: Improvements in and relating to gland or sealing arrangements for sliding rods, especially piston rods
Inventor: LORD WILFRED
IPC: F16J1/12
Filed: 1958-07-09
Abstract: 850,756. Stuffiing-box substitutes. PETERS & CO. Ltd., G. D. July 8, 1959 [July 9, 1958], No. 22038/58. Class 122 (5). A sealing arrangement for a piston rod 3a comprises a rigidly supported bearing 9 for the rod having a bush 14 of plastics material split longitudinally to compensate for dimensional changes, a sealing bush 12 formed from or including polytetrafluorethylene and a resilient mounting sleeve 10 for the sealing bush. As shown applied to sealing the piston rod 3a of a vacuum brake cylinder, the sealing bush 12, which may be of P.T.F.E. only or include an inner bearing surface of sintered bronze or other material impregnated with P.T.F.E. and be bonded to a steel or other metal ring, is provided with flanges 13 for locating it in the mounting sleeve 10, which may be of rubber.