baber/WOPTO huggingface dataset:
Patent GB-1193476-A (GB)
Title: Improvements in or relating to Differential Phase Modulated Pulse Code Modulation Systems
Inventor: MILLER STEWART EDWARD
IPC: H04L27/233
Filed: 1967-10-04
Abstract: 1,193,476. Automatic phase control systems. WESTERN ELECTRIC CO. Inc. 4 Oct., 1967 [5 Oct., 1966], No. 45196/67. Heading H3A. In a differential phase modulated data transmission system as described in Specification 1,193,475 the local oscillator at a receiver or relay station is phase locked to a mean frequency by comparing the sum and difference outputs of the demodulator. The intermediate frequency is fed to a hybrid junction (13, Fig. 1, not shown) providing two outputs fed directly and via a one bit delay respectively to two inputs of a further hybrid 14; this produces a sum output fed to detector 18 and a difference output fed to detector 19. These sum and difference outputs are sampled by means of directional couplers 22 and 23 feeding the phase sensor which produces an output voltage non- trolling the frequency of the local oscillator. The sum and difference outputs a and b are 90 degrees out of phase and are shifted to 180- degree phase difference by a delay network and fed to a hybrid junction 70; the output ports of the hybrid feed amplitude detectors 56 and 59 the outputs of which are subtracted in unit 57 to provide an output voltage. With the system so far described (illustrated in Fig. 5, not shown) the sign of the output voltage depends on the information signal; this can be prevented by attentuating one of the signals a or b, which is done in the arrangement shown by the 10 db. couplers 73 and 74, and by providing a second sensor (based on hybrid 71) the output of which is combined with that of the first in unit 72 to give the final output.
Patent GB-1198700-A (GB)
Title: Method of Producing a Casting Having a Surface Layer.
Inventor: UTO YOSHIMITSU
IPC: B22D19/08
Filed: 1967-10-05
Abstract: 1,198,700. Casting composite articles; mouldlining materials. MITSUBISHI JUKOGYO K.K. 5 Oct., 1967, No. 45516/67. Heading B3F. In a method of producing a casting having a surface layer of different composition than the remainder, e.g. a corrosion resistant, an abrasion resistant, or an oxidation resistant layer, or a bearing surface, a mixture containing the powder of a metal or alloy is mixed with a binder and solvent and introduced into a mould 2 as a layer 4 on the surface of the mould cavity 3, molten metal is then poured into the cavity 3 either to alloy with the metal powder or to embed the particles in the cast metal. The mixture may contain an exothermic material and the binder may be a synthetic resin, paraffin, starch, or other organic binder, and the solvent may be methyl alcohol, acetone, or water. The powdered metal may include one or more of the elements Cr, Al, Ni, Si, Mn, C, N, Mo, W, Co, V, Zr, Nb and Pb, and the casting metal may be steel, cast iron, copper or copper alloy. A number of specific examples are described. The method may be used in connection with centrifugal casting, pressure casting with bottom pressure pouring, and vacuum casting. The mixture forming the layer 4 may also include oxides, carbides, nitrides, e.g. Al 2 O 3 , ZrO, Cr 2 O 3,  TiC, AIN.
Patent GB-981103-A (GB)
Title: Improvements in or relating to direction-finding equipment
IPC: G01S13/44
Filed: 1962-11-30
Abstract: 981,103. Monopulse radar. ALBISWERK ZURICH A.G. Nov. 30, 1962 [Dec. 1, 1961], No. 45556/62. Heading H4D. In a monopulse radar system, comprising a pulse generator 1, a magnetron transmitter 2, a duplexer 3 connected to the sum channel 15 of a sum and difference comparator network 8, four symmetrically arranged radiators 9, 10, 11 and 12 directing their energy at a parabolic reflector 13 to produce four overlapping beams, and sum and difference channels 19/21, leading from the network 8 to processing means, a calibration antenna 34 is provided, fed from oscillator 32 with pulses having the same frequency as those from generator 1 but having a predetermined lag thereto. The said lag is used to provide range calibration, whilst direction calibration is carried out by moving the antenna 34 along the surface of the reflector 13. For zero distance range calibration the transmitter 2 energizes the antenna 34, its power being cut down by a dummy load 6. By feeding a signal of known power to the antenna 34 the sensitivity of the system may be checked. Phase shifters 22/24 which compensate for any phase errors caused by inequality of the lengths of the sum and difference channels, such that the sum signal is always in phase with or in antiphase with the difference signals, may also be calibrated, if it is ensured that the signals received by the four radiators 9, 10, 11 and 12, from the calibrating antenna 34, are all in phase. U.S.A. Specification 2,830,288 is referred to.
Patent GB-1272645-A (GB)
Title: Fans e.g. for cooling motor vehicles
Inventor: FOLKES HUGH LORIAN
IPC: F01P5/02
Filed: 1969-09-16
Abstract: 1,272,645. Axial-flow fans. FOLKES BELTING CO., Ltd. Sept. 16, 1970 [Sept. 16, 1969], No.45626/69. Heading F1C. A fan, e.g. for a motor vehicle, has blades 2, Fig. 14, arranged to alter their pitch abruptly with changing temperature. The blades can be flexible to be responsive to aerodynamic forces exerted by the air-flow (i.e. responsive to fan speed), the particular temperature at which the abrupt pitch change occurs then being dependent on the applied aerodynamic forces. The pitch of the flexible blades increases with increasing ambient temperature and reduces with increasing aerodynamic forces. The abrupt pitch change is brought about by forming bulges 17, crimps or part-cylindrical depressions in the blades, or by forming the blades of bi-metallic material or of a material, e.g. nickel steel, having a different coefficient of expansion from the material, e.g. aluminium, of the radial arms to which they are attached. The abrupt pitch-changing characteristic of bi-metallic blades may be enhanced by curving the blades and thereafter bending over their outer edges 52 as shown in Fig.25, to restrain the blades in a substantially flat form until they are heated. The abrupt pitch changes of the respective blades of a multi-blade fan may occur at different temperatures.
Patent GB-1424789-A (GB)
Title: Process for the preparation of benzylidene derivatives
IPC: C07D237/20
Filed: 1974-10-22
Abstract: 1424789 3 - Benzylidenehydrazino - 6 - (2- hydroxypropyl) - aminopyridazine derivatives ISF SpA 22 Oct 1974 [9 May 1974] 45631/74 Heading C2C Compounds of Formula I in which R is a C 1-3  alkyl radical optionally substituted by a hydroxyl group, are obtained by reacting a thiopyridazine of Formula II in which X is -Cl, -Br or -SCH 3 , with an aminoalcohol of Formula III R-NH-CH 2 -CH(OH)-CH 3  to give an aminopyridazine of Formula IV which is then reacted with hydrazine (e.g. the hydrate) and thereafter with benzaldehyde. All of the steps are preferably effected with heating (e.g. under reflux) and the reaction to produce IV is generally carried out in an inert organic solvent (e.g. toluene or a xylene). The reactions with hydrazine and benzaldehyde are preferably effected in an aprotic solvent (e.g. DMF) and the last step generally at pH 3 to 6.
Patent GB-1261124-A (GB)
Title: Laser and container therefor
IPC: H01S3/02
Filed: 1969-09-22
Abstract: 1,261,124. Lasers. COMPAGNIE GENERALE D'ELECTRICITE. 22 Sept., 1969 [30 Oct., 1968], No. 46675/69. Heading H1C. The laser active medium 8 and pumping source 9 are mounted via a cradle 6 on a removable cover plate 5 of an enclosure 3. The parallelopiped enclosure 3 is provided with apertures in which a semi-transparent mirror 1 consisting of a plurality of plane dioptric elements and a totally reflecting prism 2 are disposed so that when the cover plate 5 is fitted over aperture 4 of the enclosure 3 they are in line with the YAG laser rod 8. The rod 8 and lamp 9 are mounted in a pump cavity 7 supported by a rod cradle 6. Operation may be c.w. or Q-switched and the active medium 8 may be gaseous or liquid. A plurality of the lasers may be used in an amplifying chain in which case mirrors 1, 2 are replaced by one or two afocal optical lens systems, transparent plates, polarizers or Brewster angle plates.
Patent GB-1019445-A (GB)
Title: Packaging tray
IPC: B65D85/34
Filed: 1964-11-20
Abstract: 1,019,445. Moulded pulp trays. KEYES FIBRE CO. Nov. 20, 1964 [Jan. 2, 1964], No. 47310/64. Heading B8P. A moulded pulp tray has a plurality of finger portions 18 arranged in scallop-like array around the bottom portion, depressions 20 are associated with each finger portion and merge with the tray but are of dissimilar curvature thereto. The depressions may extend inwardly or outwardly. If the tray is of elongated form (Fig. 8, not shown) the fingers at each end of the tray are extended transversely to form an end wall. A bead around the top of the tray provides an upper surface 28 and a shoulder 26 that facilitates nesting of empty trays. The base may have a ridge moulded therein to separate two rows of articles in the tray. The filled tray may be overwrapped with film which may be transparent or opaque and can be stuck to the underside of the tray base or may be in the form of a sleeve. The overwrap may have ventilation holes therein and may be a heatshrinkable film.
Patent GB-1042959-A (GB)
Title: Improvements in or relating to fluid flow control valves
IPC: G05D23/12
Filed: 1963-12-04
Abstract: 1,042,959. Valves. DANFOSS A.S. Dec. 4, 1963 [Dec. 5, 1962], No. 47978/63. Heading F2V. A pressure balanced valve comprises a valve closure member 12 mounted on a valve stem 6 and co-operating with a valve seat 4 surrounding the valve inlet. A diaphragm 13 is mounted between the closure and housing to form a chamber 11 which is connected to the opposite side of the closure by a passage 9 in the valve stem. The diaphragm is mounted under tension and is such that fluid pressure acting on the diaphragm deforms it rather than applying a force on the closure. The valve closure is pressure balanced by fluid in the chamber 11 acting on the back of the member. In a modification, the diaphragm is a rolling diaphragm which also acts as the closure member, a cupshaped member being provided on the stem as a backing for the diaphragm and a pressure balancing surface. In a further modification, the diaphragm is replaced by a bellows. As shown, the valve is actuated by a thermostatic device 8.
Patent GB-1151368-A (GB)
Title: Two-Component Diazotype Copying Material
IPC: G03C1/60
Filed: 1966-10-26
Abstract: 1,151,368. Photo-sensitive diazotype materials. KALLE A.G. Oct. 26, 1966 [Oct. 27, 1965], No.48111/66. Heading G2C. A two-component diazotype material giving a black copy contains a light-sensitive layer containing a diazotized p -phenylene diamine, a first coupler which couples to give a blue dye, a second coupler which couples to give a yellow dye and an ultraviolet absorber in a range which overlaps the range of ultraviolet light absorption of the diazonium compound and which is a pyrazoline derivative of formula where R 1  and R 2  are hydrogen or an alkyl radical with up to 6 carbon atoms. The second coupler is preferably of formula: where R 3  is a -COCH 3 , -CONH 2 , -CSNH 2  or a -CNHNH 2  group and the first coupler is preferably 2-hydroxy -3-naphthoic acid amide. The lightsensitive layer is preferably coated on transparent support such as cellulose acetate, polyester or polycarbonate films or transparentized paper. The maximum absorption of the ultraviolet absorber should be of a shorter wavelength than the diazonium compound to give a greater gradation.
Patent GB-1208293-A (GB)
Title: The forming of spiralled or twisted synthetic plastic fibres
IPC: D01D10/04
Filed: 1967-10-24
Abstract: 1,208,293. Bristle elements. FILAMENT EXTRUDERS PTY. Ltd. 24 Oct., 1967 [27 Oct., 1966; 4 April, 1967], No. 48298/67. Heading A4K. [Also in Division D1] Twisted fibres to be mounted in the sweeper head of a road sweeping machine or to be tufted into a broom or brush head are made by twisting a filament, heatsetting the twist in the filament, and cutting the filament into fibres. The filament may be twisted by unwinding it from a reel mounted in a rotating cage and heated by passage through an oven. The cage may hold two reels so that two filaments are twisted together and heat set. A pair of separate plastics fibres having a spiral or twist may be obtained by separating the filaments before or after cutting. A further cage with two pairs of pulleys may be connected to the main cage to prevent the plying twist running back into the main cage. Alternatively a filament may be twisted and wound on a still frame which is then heated by hot air. The filament may be of a polyolefin, polystyrene, polyester, or nylon, and may have a round, oval, or flat cross-section.
Patent GB-1531036-A (GB)
Title: Connection mechanism for connecting a trailer to a tracto
IPC: B62D53/08
Filed: 1976-11-19
Abstract: 1531036 Trailer coupling assemblies CLARK EQUIPMENT CO 19 Nov 1976 [19 Nov 1975] 48379/76 Heading B7T A coupling assembly for coupling a trailer to a tractor comprises a plate 51 mountable on the trailer and having an opening 52 rotatably receiving a post 45 carried by a table 37 pivotally connected through a shaft 34 and a beam 28 to brackets 12 mountable on the tractor. The plate 51 is retained on the post 45 by a sleeve 54. Pneumatic piston-and-cylinder assemblies 61 are operative to move locking blocks 64 to positions between the underside of table 37 and beam 28 to substantially eliminate pivoting of the table 37 about the axis of shaft 34.
Patent GB-1332822-A (GB)
Title: Variable speed transmissions
IPC: F16H61/02
Filed: 1970-10-12
Abstract: 1332822 Variable speed gears KLOCKNERHUMBOLDT-DEUTZ AG 12 Oct 1970 [11 Oct 1969] 48384/70 Addition to 1332821 Heading F2D A variable speed gear as in Specification 1,332,821 is arranged so that when changing up from a ratio of the main gear 8, the ratio of the auxiliary gear 2 is first changed from low to high and then (e.g. by further movement of the main gear control lever 28) the main gear is changed ratio upwards as the auxiliary gear is changed back to low (direct drive). As shown the solenoid valve 33 controlling the auxiliary gear is controlled by a contact 46 movable with the lever 28 sliding over contacts 41a ... 42b on a plate 43 pivoted at 44 to follow the lever 28 in lost motion fashion. (For Figure see next column.)
Patent GB-1427097-A (GB)
Title: Optically-active morpholine derivatives
IPC: B01J23/00
Filed: 1973-10-18
Abstract: 1427097 Optically active morpholine derivatives IMPERIAL CHEMICAL INDUSTRIES Ltd 22 Aug 1974 [18 Oct 1973] 48490/73 Addition to 1138405 Heading C2C The invention comprises optically-active morpholine derivatives of the general Formula I wherein R<SP>1</SP> stands for hydrogen or a methyl, isopropyl or allyl radical, wherein R<SP>2</SP>, R<SP>3</SP> and R<SP>4</SP> which may be the same or different, stand for hydrogen or a methyl radical, and wherein X stands for a phenyl radical which may be unsubstituted or substituted by one substituent selected from methyl, n-propyl, allyl, propenyl, methoxy, ethoxy, n-propoxy, isopropoxy, nheptyloxy, alkyloxy, phenoxy, phenyl, methylthio and acetyl radicals and a chlorine atom or substituted by two methyl radicals; and the acid addition salts thereof, the optically-active derivative being that enantiomer having the (S) absolute configuration, as hereinafter defined, about the carbon atom of the morpholine ring bearing the side-chain. By a morpholine derivative having the (S) absolute configuration is meant one which, as a solution of its hydrochloride salt in methanol, exhibits a plain negative optical rotatory dispension curve between 16,000 and 43,000 cm.<SP>-1</SP> (6250 and 2330 Š units). The compounds of Formula I may be prepared by (a) resolution of the corresponding racemic morpholine derivative by conventional means, (b) reducing of an opticallyactive compound of the formula with a complex metal halide, (c) for those compounds in which R<SP>1</SP> is hydrogen, removal of the removable α-aryl alkyl or alkyl radical from an optically-active compound of the formula wherein R<SP>5</SP> stands for a removable α-aryl alkyl radical of up to 11 carbon atoms or a removable alkyl radical of 1 to 6 carbon atoms. (d) cyclization of an optically-active compound of the formula wherein Y stands for a displaceable radical, with a base or (e) reacting an optically-active compound of formula wherein Z stands for a displaceable radical, with a phenol of the formula The compounds of Formula I are used as pharmaceuticals.
Patent GB-994510-A (GB)
Title: Coffee making machine
Inventor: MARTIN JOHN CONANT
IPC: A47J31/057
Filed: 1963-12-10
Abstract: 994,510. Dispensing liquids. BUNN CAPITOL CO. Dec. 10, 1963, No. 48676/63. Heading A4T. In a coffee infusion apparatus in which an insulated hot water tank 17 has an electric heating element 19 controlled by a thermostat 22, hot water is displaced from the top of the tank by cold water flowing from funnel 47. Coffee grounds 32 are placed on filter paper 33, resting on wire-mesh in a removable funnel 35, and, on pouring a volume of cold water into funnel 47 equal to the required volume of coffee, the hot water is sprayed from distributing head 27. Beaker 40 stands on hot plate 41 controlled by switch 62. As the delivery is completed, the syphon action of pipe 24 is broken by vent pipe 53 to return the water level in tank 17 to its original position 28. The vent pipe 53 may be omitted (Figs. 4 and 5, not shown). Alternatively, a valve may be included in pipe 24 and end 25 made flush with the inner surface of the tank (Fig. 6, not shown). The casing, which is of stainless steel, is kept free from condensation by heater 60 in parallel with heating element 19.
Patent GB-1532850-A (GB)
Title: Axial-flow reversible turbine
IPC: F01D17/12
Filed: 1976-11-23
Abstract: 1532850 Reversible gas turbines VI ROMANOV FI KIRZNER and YK SOROKA 23 Nov 1976 48813/76 Heading FIT A reversible axial-flow gas turbine comprises an inner flow duct containing a multi-stage rotor for forward operation, the last stage blades 19 of which carry tip blades 20 projecting into a coaxial outer flow duct for reverse operation. When the latter is required, pneumatic cylinder 44 is actuated to move, via linkage 38, a circumferential band 13 radially outwards to permit working gas entering intake 10 to flow outwards through ports 11 into the outer flow duct. Simultaneously mechanism 50, 51 moves pivotal guide vanes 5 into a position to block flow to the inner duct. The tip blades 20 have a generally S-shaped profile, Fig. 3.
Patent GB-1386799-A (GB)
Title: Self-adhesive disposable operating towel
IPC: B32B27/00
Filed: 1971-10-21
Abstract: 1386799 Laminates JOHNSON & JOHNSON 14 Sept 1972 [21 Oct 1971] 48942/71 Heading B5N [Also in Divisions B2 and A5] A disposable operating towel comprises a layer of absorbent material having on one surface thereof a backing layer of liquid- and bacteria-impervious material, an edge portion of the backing layer, on the major surface thereof which is not in contact with the layer of absorbent material, being provided with a layer of pressure-sensitive adhesive by which the towel may be adhered to a substrate. The backing layer may be a water-impervious fabric or a metal, polypropylene, polyethylene or polyvinyl chloride film and the absorbent material, which may contain antispetics, may be of woven or non-woven fabric, paper, hydrophilic foam, e.g. viscose rayon foam, other foams, e.g. polyurethane, polyether or styrene/butadiene rubber foam, which have been rendered hydrophilic, or suction bonded wood pulp. The pressure sensitive adhesive which may contain antiseptics, may be a polyacrylate or polymethacrylate, e.g. a copolymer of 2-ethyl hexyl acrylate and vinyl acetate. The layer of absorbent material and the backing layer may be coextensive or the backing layer may extend beyond an edge or edges of the absorbent layer. The towel, which may be rectangular, L-shaped or curved, may be sterilized by means of steam and may be hermetically sealed in a package. The pressure sensitive adhesive may be covered with paper coated with a release agent, e.g. a silicone.
Patent GB-1048058-A (GB)
Title: A communication transmission system with ribbon cable for the multiple wiring of switches
IPC: H01B7/08
Filed: 1964-12-02
Abstract: 1,048,058. Transmission systems; ribbon cables. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. Dec. 2, 1964 [Dec. 5, 1963], No. 48977/64. Headings H1A and H1L. [Also in Division H4] In a communication transmission system, having switching devices arranged in banks A, B, one above the other, ribbon cables connect the switches so that between two wires connected as speech wires a 1 , a 2 -a 10  there is provided a wire s 1 , s 2 -s 9  which is connected to an electrically neutral point (e.g. earth) of the system so as to serve as a shielding wire. Three ribbon cables are required, one containing only the a speech wires, another only the b speech wires and the third only c or private wires. The switches may be cross-bar arrangements using latching relays. Connections are made to the ribbon cable by bringing out the speech wires V and the screening wires S to form soldering loops (Fig. 4, not shown).
Patent GB-1136062-A (GB)
Title: A lathe having a hollow spindle and apparatus for advancing tubular workpieces to a cutting position
IPC: B23B31/40
Filed: 1966-11-04
Abstract: 1,136,062. Bar stock feed. WERKZEUGMASCHINEN-FABRIK GILDEMEISTER & CO. A.G. 4 Nov., 1966 [27 Nov., 1965], No. 49581/66. Heading B3B. Apparatus for feeding tubes in lathes comprises a rotary rod 7 which is inserted in the tube 4, the rod having a head 33 including three equally spaced radially movable studs 34 for gripping the tube. In a lathe 1, Fig. 1, rod 7 extends between slides 5, 6 suspended from a guide rail 8, the slides being moved so as to feed the tube 4 through a hollow chuck 3, by a chain drive 9-12. Slide 5, Fig. 3, comprises a frusto-conical sleeve 14 for centering the tube 4 and the slides are releasably connected by a bar 15. When only a remnant of tube remains, a new workpiece (22), Fig. 4 (not shown), is rolled into troughs (24) by separators (23), the troughs being carried by lever (25) pivotally mounted on supports (21), and suspended by cables (28). Studs 34 are actuated independent of each other by fluid pressure means including a piston 35, Fig. 5, or by a nut and screw 52, 53, which move a bevel member 48, Fig. 6. A ring 45 and an additional stud 46, Fig. 6, may be provided for gripping tubes having large internal diameters.
Patent GB-1272337-A (GB)
Title: New basic carbamates and preparation thereof
IPC: C07D295/08
Filed: 1970-10-20
Abstract: 1,272,337. Basic carbamates. KNOLL A.G. CHEMISCHE FABRIKEN. 20 Oct., 1970 [26 Nov., 1969], No. 49667/70. Heading C2C. Novel carbamates of the general Formula I: wherein R 1  is wherein X is methylene or ethylene and Y and Z are the same or different C 1-4  alkyl or aralkyl groups or together form an alkylene residue and R 2  is hydrogen or methyl or R 1  and R 2  together with the carbon atom attached thereto is a cyclic residue having one or two tertiary nitrogen atoms and salts thereof may be prepared by reacting 2.phenylbicyclo[2.2.1]heptane-2-carbonic acid chloride with sodium azide to form the azide, decomposing the azide to the isocyanate and reacting the isocyanate with an amino-alcohol II:  Pharmaceutical compositions of the compounds I with the usual excipients show high spasmolytic, anticholinergic, broncholitic and nicotinolytic properties when administered orally or parenterally.