baber/WOPTO huggingface dataset:
Patent GB-792706-A (GB)
Title: Improvements in or relating to hydrocarbon conversion catalysts
IPC: B01J23/40
Filed: 1954-08-10
Abstract: A hydrocarbon conversion catalyst is prepared by forming an intermediate concentrate containing 1-35 per cent by weight of an active hydrogenation - dehydrogenation component, other than a nobile metal, supported on a solid adsorptive carrier, and then mixing the intermediate concentrate with at least its own weight of pre-dried diluent adsorptive material.  The diluent may be alumina with or without a minor amount of silica, chromia, magnesia, titania, zirconia, thoria, boria, zinc oxide, phosphoric anhydride, or halogen acid.  The carrier may have the same composition as the diluent or may be alumina associated with potassium oxide, calcium oxide, potassium carbonate, or sodium carbonate; alternatively the carrier may be composed entirely of one or more of zirconia, titania, magnesia, silica, thoria, and activated carbon.  Specified active catalyst components are molybdena, cobalt molybdate, chromia, vanadia, tungsten oxide, and nickel.  In an example, calcined alumina is dry-mixed with molybdena, calcined, dry-mixed with a further amount of alumina and then used in the hydroforming of naphtha.  The catalyst is suitable for fixed-bed or fluidized-bed use.
Patent GB-1344754-A (GB)
Title: Reciprocating pump systems
IPC: F04B43/04
Filed: 1972-05-18
Abstract: 1344754 Reciprocating pumps SIEMENS A G 18 May 1972 [15 July 1971 (2)] 23316/72 Heading F1A A pump for supplying small quantities of ink to an ink jet printer has a capillary orifice 14 acting as a delivery check valve, and a substantially unrestrained inlet check valve 9. Orifice 14 is the discharge orifice of the printing head 13, and valve 9 comprises a glass plate engageable with a flat seating surface, which is roughened or notched to permit slow pressure equalisation. The pumping member is a diaphragm 1 which is reciprocated by an electromagnet 5 acting against a spring 6, the plunger armature of the electromagnet and spring 6 acting on frusto-conical members 3 and 4, which compensate for variation in the electromagnet and spring forces during the discharge stroke. During the discharge stroke, a convex meniscus is formed at the discharge orifice 14 from which the ink is accelerated in droplets by an electric field. Upper and lower stops may be provided to limit the diaphragm stroke.
Patent GB-920001-A (GB)
Title: Semiconductor arrangement
IPC: H01L23/04
Filed: 1959-07-07
Abstract: 920,001. Semi-conductor devices. TEXAS INSTRUMENTS Inc. July 7, 1959 [July 10, 1958], No. 23321/59. Class 37. A semi-conductor device comprises a header member 22 to which is attached a spacer 38 of insulating material which serves to hold the device spaced from a supporting surface such as a printed circuit board 10 and thus reduces the possibility of solder 31 bridging conductive parts of the device. The header 22 comprises a dishshaped metal shell 24 filled with insulating material 36 and having holes 27, 28 through which pass leads 30, 32 to connect a semi-conductor unit 34, mounted on the metallic side of the header, to eyelets 12, 14 in the circuit board 10. The spacer 38, which is made of frangible material, e.g. glass, ceramic, is partially embedded in the insulating material 36 and is formed with a nick or score mark 40 close to its point of attachment therewith, so that the spacer may be detached if not required. The semi-conductor unit 24 is enclosed by a metal housing 18 attached to the header 22. Alternatively, the spacer may be formed integrally with insulating material 36; or the header may comprise a ring of metal bonded to a glass or ceramic disc.
Patent GB-750695-A (GB)
Title: Improvements in and relating to electrical protective relay devices
Inventor: RUSSELL ALBERT
IPC: H02H3/40
Filed: 1953-08-25
Abstract: 750,695. Protection cut-out systems. ENGLISH ELECTRIC CO., Ltd. Aug. 19, 1954 [Aug, 25, 1953], No. 23419/53. Class 38(5) A protection system responsive to two signals for example positive values of the quantities [IZ||IZ-2V[ and |IX-V|-V[ derived from the protected circuit, derive their signals from a current transformer 19 supplying transactors 20, 21 and a voltage transformer 18 supplying further transformers 23, 24 and 48 all of which have two secondaries of one-to-one ratio each. The e.m.f. of the secondary of 21 is proportional to IX where X is a constant value of reactance, and that of 20 is IZ where Z is a constant value of impedence. The outputs of the transformers are connected as shown over fullwave rectifiers to resistances 29, 30 and 34, 35 so as to yield the quantities and their directions as shown. The quantity |IZ|-|IX-2V| is fed to one grid and the quantity |IX-V|-|V| to the other grid, of a pentode valve 33 such that, when both are positive, the resulting anode current is transformed at 38 and fed to the control grid of a gas-discharge valve 41 having the trip coil or relay 42 in its anode circuit in series with a disconnect contact 43 which re-sets the system after operation of the relay 42 or circuit-breaker. The Specification refers also to the relay 42 being in the anode circuit of the pentode, to the use of transistors instead of valves, and to Specification 750,696 in connection with the memory action imparted by the resistance 46 and-condenser 47 in case the voltage V falls unduly.
Patent GB-910309-A (GB)
Title: Rubber compositions
Inventor: WATSON JOHN WILLIAM
IPC: C08K3/04
Filed: 1958-07-22
Abstract: Natural and synthetic rubber compositions are reinforced with carbon black which has hydrocarbon groups, e.g. alkyl, alkenyl, aralkyl, or aryl, chemically attached to the surface of its particles.  The carbon blacks, which may be fully or partially, e.g. 10 to 80%, alkylated or arylated are described in Specification 910,310 and may be incorporated in the rubber, e.g. by milling, in the proportion of 10 to 100 parts per 100 parts of rubber, by weight, and the mixture cured in the presence of sulphur and/or a free radical curing agent of the formula R1R2R3COOCR4R5R6 where R1 and R6 are aryl groups and R2, R3, R4, and R5 are hydrogen or alkyl groups with less than four carbon atoms.  Dicumyl peroxide is the preferred such agent, 1 to 5 parts per 100 parts, by weight, of the rubber being incorporated, the mixture being then cured between, preferably 110 DEG C. and 170 DEG C.  Suitable synthetic rubbers which may be reinforced include polyisoprenes, polychloroprenes, polyolefins, polybutadiene, copolymers of butadiene with styrene, acrylonitrile and methyl isopropylketone, copolymers of isobutylene with diolefines, such as butyl rubber and polyurethanes.
Patent GB-1470214-A (GB)
Title: Charge transfer device
IPC: H01L29/423
Filed: 1974-05-28
Abstract: 1470214 Charge coupled semi-conductor devices HEWLETT-PACKARD CO 28 May 1974 18 June 1973] 23534/74 Heading H1K In a charge coupled device comprising an insulating layer 6 on a semi-conductor substrate 5, each electrode in an array 11-14 has two regions 15a, 17a &c. of materials with different conductivities. As shown, a two-phase voltage supply is connected to the electrode array to transfer the charge through the substrate 5. The electrode regions 17a-17d have have a high conductivity, e.g. 1-5 Á ohms<SP>-1</SP> cm.<SP>-1</SP> and the regions 15a-15d have a high resistivity, e.g. 0À1-100 M ohms.cm.<SP>-2</SP>. The RC time constant across each electrode thus varies so that as the voltage phases on adjacent electrodes are exchanged the potential change is more rapid under the regions 17a-17d. A shoulder in the potential well is thus formed which ensures transfer of charge in one direction only (Fig. 2B, not shown). The substrate 5 may be of Si, GaAs or GaP and the insulating layer 6 is of dielectric material such as SiO 2 , Si 3 N 4  or Al 2 O 3 . The electrode materials are selected from Al, MoAu or PtTi for the high conductivity regions 17a-17d and polysilicon or a thin metal layer for the high resistivity regions 15a-15d.
Patent GB-533585-A (GB)
Title: Improvements relating to the double-bladed discs of radial flow turbines, more particularly such turbines operating with steam or gas
IPC: F01D5/04
Filed: 1939-08-15
Abstract: 533,585. Elastic fluid turbines. PATENTVERWERTUNGS GES. HERMES. Aug. 15, 1939, No. 23570. Convention date, Aug. 15, 1938. Drawings to Specification. [Class 110 (iii)] A turbine disc with blade rings on both sides arranged in staggered relationship, has a crosssection which tapers towards the periphery.
Patent GB-1513594-A (GB)
Title: Rolling vacuum feed table
IPC: B65H1/06
Filed: 1976-06-08
Abstract: 1513594 Feeding sheets E V HENC 8 June 1976 23580/76 Heading B8R A pile of sheets B, Fig. 2, is supported on a plurality of freely rotatable rollers 20, Figs. 1 and 2, arranged in a plurality of rows or extending across the width of the sheets, the lowermost sheet LB is separated from the bottom of the pile by separators 42 engaging its trailing edge, mounted on a reciprocating bar 14 and raised into operative position by an air piston 30 controlled by a solenoid actuated selectively to produce regular feed or feed/skip operation, and the sheet is held down against the rollers by reduced air pressure between the rollers, due to one or more suction chambers 10 below the rollers. Alternate rollers 20 may be slightly staggered vertically to produce a sinuous path. The frontmost roller may have a larger diameter or be arranged slightly higher than the others. An adjustable back stop, Fig. 9 (not shown) may be provided to accommodate sheets of different lengths. Means are provided to seal off from atmosphere parts of the vacuum chambers which are not in use.
Patent GB-315598-A (GB)
Title: Improvements in or relating to photo-electric cell systems
IPC: H01J40/14
Filed: 1928-08-16
Abstract: 315,598. General Electric Co., Ltd., and Campbell, N. R. Aug. 16, 1928. Light, control of apparatus by; thermionic valve circuits. - A circuit comprises a gas-filled photoelectric cell in series with a current limiter, which may be a thermionic valve, and operating partly on its unstable characteristic, as described in Specification 288,783, and one or more thermionic valves used as rectifiers or amplifiers, and the high and low-tension currents are supplied from the mains and are subject to the variations characteristic of such supplies. The electrodes of the photoelectric cell are approximately in the form of parallel planes. The current passed bv the current limiter is adjusted until the critical illumination, which causes the cell to pass from its unstable to its stable characteristic, is a maximum, so that if the current varies this illumination will always be sufficient to cause the characteristic to change. A transformer is connected in the output of the cell and the secondary is connected to the thermionic amplifiers and detector, so that, when the cell is producing oscillation on its unstable characteristic, there is a current in the output of the cell, which ceases when the cell passes to its stable characteristic, and this current is used to operate a mechanical relay.
Patent GB-422070-A (GB)
Title: Improvements relating to painters' blow-lamps and to paint-removing tool scrapers
IPC: B44D3/16
Filed: 1933-08-25
Abstract: 422,070. Scrapers. TURNER, B. T., 32, Rutland Road, Edgbaston, Birmingham. Aug. 25, 1933, No. 23620. [Class 61 (ii)] [See also Group XI] A plate 13 having a scraping edge 15 is mounted on the body or reservoir of a blow lamp with the scraping edge disposed substantially horizontally at a distance from the handle to facilitate the removal of paint from knives or other paint-removing tools. The plate 13 may be formed either with lugs 14 detachably engaging clips 12 on the reservoir or with ears which are bent around a resilient metal band clamped to the reservoir.
Patent GB-1331349-A (GB)
Title: Long-life sudsing agent and pad incorporating same
Inventor: ABLER R L
IPC: C11D10/04
Filed: 1971-04-19
Abstract: 1331349 Cleaning compositions MINNESOTA MINING & MFG CO 19 April 1971 [11 March 1970] 23650/71 Heading C5D A cleaning composition comprises (a) a surface active detergent, (b) a non-ionic foamstabilizer, (c) a soap and (d) at least 10% based on the weight of (a) of a hydrophilic proteinaceous colloidal agglutinant. The proteinaceous agglutinant may be tanned gelatine, a solution of casein in ammonia or animal glue tanned by contact with formaldehyde. The composition may also include propylene glycol. It may be dispersed throughout or injected into the centre of a porous pad, e.g. a steel wool pad.
Patent GB-702590-A (GB)
Title: Improvements relating to polishing and like machines
Inventor: COLLINS JOHN HENRY
IPC: B24B5/04
Filed: 1950-07-11
Abstract: 702,590. Grinding or polishing. DAMIEN (LONDON), Ltd., M. July 11, 1951 [July 11, 1950], No. 23736/52. Divided out of 692,870. Class 60 A grinding or polishing machine comprises a fixedly-mounted frame 1, Fig. 1, supporting a rotatable polishing disc 8, and a pivotallymounted frame 2 adapted to be oscillated towards and away from the frame 1, the frame 2 including shaft 22, Fig. 3, for holding a workpiece 25, such as an aluminium saucepan, and means for rotating the shaft about its axis and effecting axial reciprocations thereof simultaneously. A mandrel 24 on the end of the shaft 22 holds the workpiece in contact with the disc 8 which is rotated by an electric motor (not shown) housed in the casing 1 and may have its position adjusted for various sizes of workpiece by means of slides on the casing. A handlever 28 mounted on a tubular housing 17 for the shaft 22, is rocked to expand the mandrel into gripping engagement with the workpiece. The frame 2 is then rocked on its axles 4, 7, Fig. 1, into engagement with a stop rod 13 by a handlever 46 to engage the workpiece 25 and disc 8 against the action of a spring 14 on the rod, a spring-urged detent 15 engaging a member 16 retains the frame in this position.. As the frame 2 is rocked into the operative position, the clutch 37, Fig. 2, of an electric motor 31 housed in the frame 2 and driving through change-pulley 32, 34, a belt 33 and a reduction gearing 35 is engaged to effect rotation and axial reciprocation of the shaft 22. The clutch is operated by a bell-crank lever that engages a cam fixed to the base 3 of the machine. A spindle 38 supporting part of the clutch 37 rotates the shaft 22 through bevel gears 39, 40, 42, 23 and a flexible shaft 41. The shaft 22, Fig. 3, is reciprocated with its housing 17 in bearings 18, 19 by a pin 62 mounted eccentrically on a disc 53 and traversing a slot in a collar 51 fixed to the housing 17, bevel gears 61. 55 and a chain gear 58, 60 coupling the disc 53 to the spindle 38. The workpiece 25 is rocked away from the polishing disc, disengaging the clutch, when one of the abutments on a disc 69 rotated by bevel gears, 54, 56 releases the detent 15 from engagement with the member 16.
Patent GB-1045797-A (GB)
Title: Tower crane mounted on a vehicle
IPC: B66C23/34
Filed: 1963-06-14
Abstract: 1,045,797. Collapsible tower cranes. K. E. LINDEN. June 14, 1963 [June 25, 1962], No. 23739/63. Heading B8B. A mobile tower crane has its telescopic tower 26, 28 pivoted about a pair of pins 30 spaced from its lower end so that when in the transport position (Fig. 1) the tower overhangs both ends of its mounting vehicle 10. In the erect position (Fig. 2), a pair of pins 51 are latched into beddings 52. Heavy objects may be lifted by removing a jib 38 and pivoting the tower 26, 28 about the pins 51 in beddings 52 by releasing the pins 30 from their beddings 32 (Fig. 5).
Patent GB-150309-A (GB)
Title: Improvement in trouser supporters
IPC: A41F3/02
Filed: 1920-08-13
Abstract: 150,309. League, E. W. Aug. 20, 1919, [Convention date]. Braces.-The tab ends of braces are replaced by a fitting 1 made of sheet metal, celluloid, or other material. One fitting is placed at each side, and is supported by looped shoulder-straps 4. It has a slot 11 for gripping the shirt, and slots 8 for engaging buttons placed inside the trousers. The shoulder-straps and the part 2 of the fitting remain underneath the shirt.
Patent GB-518221-A (GB)
Title: Improvements in or relating to cathode ray tubes
IPC: H01J29/84
Filed: 1938-08-12
Abstract: 518,221. Cathode-ray tubes. FERRANTI, Ltd., MILLER, J. L., and WOOD, H. Aug. 12, 1938, No. 23786. [Class 39 (i)] In order to prevent injury to the screen by ions in a tube having the neck and bulb portions coaxial the beam from the cathode 4 is so focussed by electrodes 5, 6 that the ions are intercepted by a stop 9, while the electrons are by means of coils 14, 15, 16 diverted round the edge of the stop and refocussed on the screen 8, without any alteration of divergence other than is involved in the refocussing. Scanning coils are provided and the coil 16 may act as one of the scanning coils. The refocussing of the beam may be effected electrostatically. Specification 480,948 is referred to.
Patent GB-620705-A (GB)
Title: Electro-deposition of metal on the peripheral surfaces of rings or discs
IPC: C25D5/02
Filed: 1946-08-13
Abstract: 620,705. Electrodeposition of metals. BRITISH PISTON RING CO., Ltd., TWIGGER, T. R., MONOCHROME, Ltd., and HALL, H. C. Aug. 13, 1946, No. 23936. [Class 41] Metal such as chromium is electrodeposited on the peripheral surfaces of rings or discs, e.g. piston rings, by stacking the rings or discs one upon the other, interposing therebetween spacing washers which are of such size and shape as to leave peripheral spaces between the rings, filling these spaces with a removable material such as wax which is non-receptive to the deposition of the metal, electroplating the stack and subsequently removing the wax. The stack of piston rings 7 with spacing washers 9 therebetween may be formed between end plates 1, 11 within a hollow shell 5 and clamped together by means of tie-rods 3 connecting the end plates. The stack is removed from the shell 5 and dipped in molten wax which after solidification is removed as by a machining operation from the peripheral surfaces, leaving the wax in the spaces 15. After electrodeposition, the remaining wax is removed as by heating. The spacing washers 9 may each be provided with, e.g. six, notches 17 which extend inwardly to a depth slightly greater than that of the piston rings so that wax will also be deposited in the spaces 19 behind the rings and have a keying effect to retain the wax within recesses 15. The rings or discs may be subsequently heated to remove occluded gas from the deposited layer of metal.
Patent GB-1342511-A (GB)
Title: Interpolymers
IPC: C08F8/00
Filed: 1971-04-19
Abstract: 1342511 Aftertreated maleic anhydride/vinyl ether copolymers GAF CORP 19 April 1971 [20 March 1970] 24213/71 Heading C3P An interpolymer comprises the structural units | wherein X represents -N- or -O-; Y represents -OH, -OR<SP>11</SP> 1 , | wherein X<SP>1</SP> represents -N- or -O-; or Y and R 2  are taken together to represent a single bond and X represents -N-, thereby forming an imide ring; R 1 , R<SP>1</SP> 1 , R<SP>11</SP> 1 , R 2  and R<SP>1</SP> 2  represent hydrogen or the same or different hydrocarbon radicals having from 1-50 carbon atoms selected from normal chain alkyl, branched chain alkyl, cycloalkyl and alkylaryl radicals (and where X=-O-, R 2  does not exist or where X<SP>1</SP>=-O-, R<SP>1</SP> 2  does not exist) wherein where two groups (R 1  and R 2  or R<SP>1</SP> 1  and R<SP>1</SP> 2  respectively) are present containing a total of C 6 -C 50  and where X = -O- or X<SP>1</SP> = -O- one group (R 1  or R<SP>1</SP> 1  respectively) is present of C 6 -C 50 ; R 3  represents the same or different hydrocarbon radicals selected from methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl and (CH 2 CH 2 O) q  (CH 2 ) m CH 3  radicals, wherein q represents 1, 2 or 3 and m represents 0, 1, 2 or 3, wherein Unit I is present in an amount of from 75 to 99À5 mole per cent and Unit II is present in an amount of from 25 to 0À5 mole per cent of the interpolymer. In the examples, a methyl vinyl ether-maleic anhydride copolymer is treated with hydrogenated tallow fatty amine (a mixture of hexadecyl, octadecyl and octadecenyl amines) to produce the amide and then heated in methylated naphthalene to produce the imide; the same copolymer is also treated with cetyl alcohol to produce the ester. An isobutyl  vinyl ether-maleic anhydride copolymer is treated with hydrogenated tallow fatty amine. The treated polymers are thickening agents for aqueous systems particularly ones of high ionic strength and compositions are made up containing the untreated and treated polymers, water, diammonium phosphate, ammonia, tetrapotassium phosphate, sodium bromate, sodium hydroxide, sodium chloride, sodium sulphate, sodium metasilicate, sodium carbonate, sodium acetate, sodium phosphate, magnesium chloride and calcium chloride.
Patent GB-917712-A (GB)
Title: Improvements relating to vapour generating and superheating apparatus and to a method of generating superheated vapour
Inventor: WORLEY NORMAN GEORGE
IPC: F22G1/16
Filed: 1960-07-12
Abstract: 917,712. Cooling reactors. BABCOCK & WILCOX Ltd. July 10, 1961 [July 12, 1960], No. 24269/60. Class 39 (4). In the reactor 1, the graphite core is formed in two sections 1a and 1b in which the coolants are respectively boiling water and pressurized carbon dioxide or helium. The water and steam circulate through 1a and drum 2, the steam being led from 2 by conduit 4 through the superheater 5 into the turbine 6. Gas, circulated by pump 8, through 1b is used to heat 5, the temperature being controlled by the spray 9. The latter may be automatically regulated in accordance with the final superheat temperature or the coolant - temperature.
Patent GB-599292-A (GB)
Title: Improvements in or relating to hollow-ware
IPC: A47J45/10
Filed: 1945-09-19
Abstract: 599,292. Handles of hollow-ware. LEE, W. VAN. Sept. 19, 1945, No. 24282. [Class 66] A saucepan &c. 1 has a detachable wire handle 2 with projections 6 engaging recesses 12 in a socket 7 on the pan. Arms 3 of the handle are relatively movable to engage or. disengage the projections 6, a wedge 13 sliding along the handle to lock it in place.
Patent GB-830741-A (GB)
Title: Improvements in or relating to power-production apparatus including a pressure exchanger
IPC: F02C3/02
Filed: 1955-08-24
Abstract: 830,741. Gas turbine plant. SPALDING, D. B. Aug. 13, 1956 [Aug. 24, 1955], No. 24352/55. Drawings to Specification. Class 110 (3). [Also in Group XXVIII] Power production apparatus includes a gas turbine and a pressure exchanger having a scavenge stage and a heat extraction stage, the latter having means positioned to cool gas therein and an inlet duct arranged to introduce to the cells gas received from the turbine at a pressure below atmospheric pressure, the turbine receiving gas at substantially atmospheric pressure; the gas may come from the final stage of a turbine in which gas is expanded from atmospheric pressure. Cooling may be by a heat exchanger or by water spray, in the latter ease no outlet duet need be provided from the pressure exchanger at the heat extraction stage; heat exchange may be arranged between the expanded gas and the scavenge gas; transfer passages may be used and may include cooling means. The gas supply to the turbine may be heated. Scavenge may be controlled by a valve in a by-pass pipe between inlet and outlet. The pressure exchanger may be driven by the turbine or a separate motor.