baber/WOPTO huggingface dataset:
Patent GB-1332315-A (GB)
Title: Alloyed copper
IPC: C22C9/00
Filed: 1970-11-11
Abstract: 1332315 Copper base alloy BERRY METAL CO 11 Nov 1970 [18 Nov 1969] 53726/70 Heading C7A A copper base alloy comprises, in weight percentages: - the balance, apart from impurities such as Cr and Fe, being deoxidized copper. The alloys are made by melting and casting in a non-reactive atmosphere.
Patent GB-1246068-A (GB)
Title: Dehydrohalogenation of halogenated organic compounds in dimethyl sulphoxide solvent
IPC: C07C17/25
Filed: 1969-11-03
Abstract: 1,246,068. Dehydrohalogenation process. VULCAN MATERIALS CO. 3 Nov., 1969 [17 Jan., 1969], No. 53892/69. Heading C2C. A process for the dehydrohalogenation of an organic compound containing at least one halogen other than fluorine attached to one carbon atom and at least one hydrogen atom on an adjacent carbon atom of the organic compound comprises contacting the organic compound as a gas at 18‹ to 150‹ C. with a liquid mixture containing sodium, potassium or a quaternary ammonium hydroxide in dimethyl sulphoxide solvent and recovering the unsaturated product therefrom.
Patent GB-1326760-A (GB)
Title: Mercury wetted switch contacts
IPC: H01H1/08
Filed: 1970-11-12
Abstract: 1326760 Contact members for switches FIFTH DIMENSION Inc 12 Nov 1970 [26 Nov 1969] 53967/70 Heading H1N A mercury wettable contact has a non- wettable part projecting further toward the cooperating contact than the wettable surface. The contact 11 shown has a non-wettable coating 13 cut away on the contact button to leave a dished surface thereon which retains the mercury globule.
Patent GB-1467522-A (GB)
Title: Dyeing of air textured yarn
IPC: D06B17/00
Filed: 1974-12-13
Abstract: 1467522 Preparing textured yarn packages for dyeing E I DU PONT DE NEMOURS & CO 13 Dec 1974 [14 Dec 1973] 53969/74 Headings DIC, D1F and D1J To prepare a yarn package suitable for dyeing, an uncrimped yarn is given crenodal loops by an air jet, is directly stretched to a degree such that the loops tighten without being eliminated, and is wound at a tension of less than 0.04 gram per denier to form a package having a Shore hardness of less than 40 degrees. The hardness is measured by measuring the penetration of a ball-point indentor of 2.5 mm diameter into the package. As shown, Fig. 1, a yarn 4 is fed by roll 6, treated by liquid in bath 9, formed with crenodal loops by air jet 10, drawn between driven rolls 24, 25 and traversed onto core 20 which may be collapsible both axially and radially. In jet 10, Fig. 2, the yarn is looped by an air jet and impinged against adjustable baffle plate 14. The cores 20 and their packages are placed on rods 29, Fig. 3, loaded into chamber 26, and die is pumped through the packages. Chamber 26 is heated by hot water or steam from pipe 36. Each rod 29, Fig. 4, may comprise cross-shaped member 38 and spring mounted rods 40, 41.
Patent GB-1369657-A (GB)
Title: Coating of articles electrophoretically
IPC: C25D13/04
Filed: 1971-11-22
Abstract: 1369657 Electro-phoretic coating MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 22 Nov 1971 54111/71 Heading C7B An electronic component, e.g. a sintered ZnO disc 10, having one or more lead wires 4, 5 attached thereto, is coated by immersing it in an insulating liquid 12 of C 2 F 3 Cl 3  having particles of (e.g. epoxy) resin dispersed therein so that part of the lead wire(s) extend(s) above the liquid surface, imposing D.C. potential e.g.3-6 KV across the wire(s) and a first electrode 14 whereby resin particles are deposited electro-phoretically on the component (and its wire in contact with the liquid), imposing on the liquid A.C. voltage e.g. 1-3 KV between ground and another electrode 15 beneath the first, stirring the liquid e.g. by stirrers 17 and ultrasonic vibrator 18, withdrawing the coated component, evaporating the remaining liquid and curing the resin particles. The electrode 14 may be in grid form coated with an insulating layer. The liquid may include a charge control reagent e.g. Co naphthenate.
Patent GB-1484256-A (GB)
Title: Arrangements for sensing recorded information signals
IPC: G11B9/07
Filed: 1974-11-14
Abstract: 1484256 Capacitative record playback apparatus EMI Ltd 14 Nov 1974 [22 Nov 1973] 54210/73 Heading G5R An arrangement for playback of signals recorded as surface deformations 5a on amedium 5 has a probe electrode 1 and a co-operating electrode 4 on opposite sides of medium 5, and an alternating current bridge including a pair of closely coupled inductive ratio arms 10 and arranged to sense changes in capacitance 9 between the electrodes 1, 4. The A.C. bridge may be of the type disclosed in Specifications 587,878, 581,164 and 581,161. The bridge earth or neutral point is connected to a screen 2 of probe lead la, screen 2 forming part of an enclosure containing inductive ratio arms 10. The bridge output is derived from toppings across all or part of arms 10 through a double screened transformer 14. The wanted output may be taken directly from the output of a phase sensitive rectifier of an amplifier 15, in which case the bridge must be made to balance at a rate capable of following the highest recorded modulation frequency. Alternatively, the bridge may be made to balance at a rate accommodating relatively slow capacitance changes, e.g. due to scanning motion, the output of transformer 14 then additionally being taken to a further amplifying and rectifying device 16 which processes the information to give an output indicative solely of rapid changes in capacitance 9 and not of its magnitude. The bridge is automatically balanced by a T-network comprising capacitors 12, a second pair of inductive ratio arms 13 across A.C. source 11, and a varactor 17 the capacitance of which is controlled via a resistor 18 from the output of amplifier 15. A similar arrangement may be provided for balancing the quadrature or loss component of capacitance 9. The medium 5 may be a plastics disc having a spiral record track.
Patent GB-1218996-A (GB)
Title: Power-actuated fastener-driving tools
Inventor: BRUNELLE LAWRENCE JOHN
IPC: B25C1/14
Filed: 1968-11-15
Abstract: 1,218,996. Fastener driving tools. OLIN CORP. 15 Nov., 1968 [1 May, 1968], No. 54346/68. Heading B4C. A fastener driving tool comprising a housing 4, a slidably mounted barrel 52 and a driving piston 78 includes a piston return device which is such that the position of the piston relative to a cartridge chamber 56 may be varied. Variation of this position effects variation in the force initially applied to the piston. The device illustrated comprises a pawl member 96 spring urged into the barrel bore via slot 62 in the barrel. Shoulders 112 engage the outer surface of the barrel and surfaces 130 on the barrel engage tapered surfaces 114 or 116 or the pawl member when the barrel is moved to its firing position to move the pawl member out of the path of the piston. When the pawl member is fully withdrawn (Fig. 8, not shown) the barrel can be removed from the housing to permit reversal of the pawl member from the position of Fig. 1 to that of Fig. 6. When, after a fastener driving operation, the barrel is moved away from its firing position relative to the housing, the pawl member will first engage the piston and then engage the barrel. The relative positions of the barrel and piston will be as illustrated in Figs. 5 or 6 depending on the preset condition of the pawl member. Alternative forms of pawl member are described including a form in which the member may include an arcuate surface providing an infinitely variable adjustment.
Patent GB-1481560-A (GB)
Title: Drinking device for cattle
IPC: A01K9/00
Filed: 1974-12-18
Abstract: 1481560 Cattle drinking appliances R S ANDERSSON 18 Dec 1974 54599/74 Heading AIM A drinking device for cattle comprises a valve 1 and a mouthpiece 14 made of elastic material, such as rubber, enclosing a space 15 and having in its wall a pinhole duct 17. Animal pressure on mouthpiece 14 opens valve 1 by moving transversely and/or axially the member 10, which is normally closed with an 'O'-ring 11 held in sealing engagement with valve seat 9 by water pressure within chamber 4 supplied through an inlet 8. Pressure of water within space 15, and by the animal's mouth, opens duct 17, releasing water. The mouthpiece's inherent elasticity, which may be enhanced by elastic inserts (not shown), allows duct 17 to be opened and then to close again when drinking ceases, thus trapping water remaining in space 15 after valve 1 has closed, rendering the device drip-free. The mouthpiece need not be elongated and may have a thicker wall outlined by 18 on the inside and by the original contour on the outside, to define a smaller space 19 and having a proportionally longer pinhole duct. The mouthpiece could comprise an outer, comparatively stiff wall with an inner wall or a separate inner core member of resilient material (not shown).
Patent GB-1133148-A (GB)
Title: Steam turbine power system and method of operating the same
IPC: F01K3/22
Filed: 1966-12-08
Abstract: 1,133,148. Raising steam. COMBUSTION ENG. Inc. 8 Dec., 1966 [21 Dec., 1965], No. 55100/66. Heading F4A. [Also in Division F1] A steam turbine power plant comprises a superheated steam generator 12 supplying steam at a first pressure to a controllable throttle valve 17 for delivery at a lower pressure to a turbine 14, means for determining the steam temperature required at the turbine and for controlling the first pressure level in response to the required temperature such that this temperature is obtained when the steam is throttled from the first to the lower pressure. The aim of the invention is to reduce thermal stresses in the high-pressure turbine 14 at starting resulting from temperature mismatching between the turbine and the steam supplied thereto. At starting the flow of steam through the convectively heated superheaters 39, 40 is low relative to the flow of steam generator combustion gases, such that the steam temperature leaving superheater 40 is substantially constant regardless of the steam flow. The temperature of the turbine casing is sensed by a thermocouple 62 which sends a corresponding signal to a point 64 where a signal representing 25‹ F. is added to give a signal representing the required turbine steam temperature. The latter signal is sent to a function generator 67 which transmits an enthalpy signal corresponding to the required steam temperature to a computer 72 which also receives a signal from transmitter 69 indicative of the actual steam temperature in line 13. The computer is formed by an amplifier capable of handling a linearized function of the pressuretemperature-enthalpy relationship of the steam tables and transmits to a controller 87 a signal representing the steam pressure required upstream of the throttle valve 17 which will give the required temperature downstream of the valve 17 after throttling in the valve at constant enthalpy. The actual steam pressure signal is sent by a transmitter 84 to the controller 87 for comparison with the required value and the resulting error signal is sent through line 88 to adjust spill valve 53 until the required pressure is reached. The steam passing valve 53 flows to the plant condenser 22 by way of a desuperheater 54. Throttle valves 37, 38 between the evaporator 32 and superheaters 39, 40 enable the evaporator pressure to be maintained regardless of fluctuation in the superheater pressure caused by adjustment of valve 53. A flash tank 45 is associated with the steam generator. In a modification, Fig. 1 (not shown), the pressure error signal acts on the spill valve 58 rather than on valve 53. The invention is also applicable where at starting steam is supplied only to reheat turbine 19.
Patent GB-1214146-A (GB)
Title: Improvements in or relating to frequency doubler and coupler for electronic music generation systems
Inventor: CAMPBELL DONALD JAMES
IPC: G10H5/07
Filed: 1967-12-04
Abstract: 1,214,146. Electronic music generator. CHICAGO MUSICAL INSTRUMENT CO. 4 Dec., 1967, No. 55124/67. Heading G5J. [Also in Division H3] In an electronic music generation system, a square wave of frequency f from a source 11, is inverted at 12, and combined in an adder 13, with a sawtooth wave of equal frequency from a synchronized source 10, to give a sawtooth output wave of frequency 2f. In a frequency doubler embodiment (Fig. 3, not shown) equal frequency square waves (11<SP>1</SP>) and sawtooth waves (10<SP>1</SP>) drive tone colour filters (24, 26, respectively) and in addition the square wave is inverted in a unity gain transistorized inverter (12), its peak amplitude halved in an adder (13) and combined with the sawtooth wave (10<SP>1</SP>) to give a sawtooth output wave of frequency 2f, driving a tone colour filter (25). In an octave coupler embodiment (Fig. 4, not shown), the adder (13) includes a switch (43) to open circuit the inverter, and resistors (28, 30) selected to give a mixture of sawtooth waveforms (13<SP>1</SP>, frequency 2f, 10<SP>1</SP>, frequency f). The gain of the inverter circuit (12a, Fig. 5, not shown) may be controlled by a complex signal at an input (51) and the variable gain inverter connected to the square wave source (Fig. 6, not shown) or a variable control comprising a variable voltage controlled amplifier (74, Fig. 7, not shown) may be coupled to the sawtooth generator.
Patent GB-1404706-A (GB)
Title: Gas blast circuit breaker
IPC: H01H33/915
Filed: 1973-11-28
Abstract: 1404706 Gas-blast circuit-breaker SPRECHER & SOHUH AG 28 Nov 1973 [12 Jan 1973 2 Feb 1973 (2)] 55225/73 Heading H1N In a gas-blast circuit-breaker 1 having fixed and movable sets of contacts 6 and 5 each comprising coaxial contact members, and arranged so that the outer contacts disengage before the inner during the rupturing operation, and having a blast nozzle 10 for insulating material arranged to move with the movable contact and connected with a source of quenching gas (e.g. SF6), the nozzle is disposed between the inner and outer movable contacts with its narrowest portion 24 downstream of the inner moving contact 11 (relative to the direction of quenching gas-blast) and contains, upstream of this narrowest portion, two coaxial annular longitudinal ducts the inner of which encircles the inner movable contact so that quenching gas from it will impinge directly on to the contact. The fixed contact assembly comprises a cylinder 6 carrying outer contact fingers 7 and an inner contact tube 12. The moving contact assembly comprises a cylinder 5 which carries outer contact fingers 7 and within which is disposed a pumping cylinder 9 carrying the inner pin contact 11 on a plate 23. This plate also carries the blast nozzle 10 and has an apron 30 projecting from its underside into the pumping cylinder chamber 28 to divide this into two regions 34, 34<SP>1</SP> when the inner contacts have separated. The upstream portion of the nozzle is divided into inner and outer annular ducts 25, 26 by a member 27, the outer duct communicating directly with the pumping- cylinder chamber 28 via ports 29<SP>1</SP> whilst the ports of the inner duct are provided with a non-return valve 29. The pumping cylinder 9 is actuated by a drive 8, e.g. an hydraulic or force accumulator drive, via push rods 19; a non-return lock 20 is provided to prevent excess exhaust gas pressure driving the cylinder in the contact-closing direction during the rupturing operation, thus enabling a smaller drive unit to be used. When the inner contacts are approaching the fully open position shown in Fig. 2, the hot ionized gases are driven into the outer region 34 of the pumping chamber 34<SP>1</SP>. As the arc-current approaches zero and pressure in the nozzle drops, the gases are forced back into it, but simultaneously fresh gas from the inner region 34 of the chamber is forced through the valve ports 29 and a fine-bore orifice 35 to the contact pin and centre of the arc. In a simplified version (Figs. 4 and 5, not shown) the non-return valve 29 and the apron 30 are dispensed with, the inner annular duct 25 being blind at the upstream end and communicating with the outer duct via transverse ports (129) connecting the upstream ends of the ducts.
Patent GB-1400527-A (GB)
Title: Voltage multiplying circuit
IPC: H02M11/00
Filed: 1972-11-30
Abstract: 1400527 Photo-electric ignition control PLESSEY CO Ltd 21 Nov 1973 [30 Nov 1972] 55301/72 Heading G1A [Also in Divisions F1, H1 and H2] A voltage multiplying circuit comprises capacitors C1 . . . CN connectible in parallel via a first set 1 of photo-electric switches and discharged in series via a second set 2 of photo-electric switches, additional switches of the first set 1 being included between the capacitors and the input terminals 3, 4. The Specification describes an ignition system for an internal combustion engine in which 100V is provided by rectifying the output of an inverter supplied from a battery. 200 capacitors C1 . . . C N  are employed giving 20kV across a sparking plug connected to terminals 5, 6. In a four cylinder engine, four sets of switches 1 and 2 are provided with a single set of capacitors. In Fig.7 (not shown) the pairs of switches 1 connected in series with each capacitor, are replaced by series of switches 1 connected in the horizontal lines shown, each capacitor being connected between respective points in said series of switches. Photo-electric switch construction. Each photoelectric switch 1, 2 is formed on an insulating substrate carrying a conductive layer on which is deposited CdS, a conductive mesh being formed on the surface so as to form a second electrode. All the switches of one set may be formed on a single substrate together with the capacitors C. The set of switches 1 may be located in a row at 21 on a hollow cylinder 23 and the set of switches 2 located at 22. The switches are actuated by a 15W lamp 25 the light of which is interrupted by a shade 24 having a V-shaped slot 26 and rotated by the half speed shaft of the engine. The charging period may be 19ms and discharge period 1ms. Alternatively the rows of switches 21, 22 may be deposited on a flexible substrate which is wrapped into a hollow open-ended cylinder with the two rows along the length of the cylinder in diametrically opposite positions.
Patent GB-1419467-A (GB)
Title: Shovelling machine
IPC: E02F7/04
Filed: 1973-11-29
Abstract: 1419467 Shovelling machines MITSUI SHIPBUILDING & ENG CO Ltd 29 Nov 1973 [1 Dec 1972] 55454/73 Heading E1F A shovelling machine of the type wherein a bucket is transported from the front to the rear of the machine comprises a self propelled carriage 20, 21, shovel-supporting arms 23 pivotally supported on the front of the carriage by shafts 22 that are horizontal when the machine is supported on a horizontal surface, a link mechanism 29, 30, 33 including a first hydraulically actuated piston cylinder unit 33 for rocking the arms vertically, and a second hydraulically actuated piston cylinder unit 34 which is pivotally connected between the bucket and the carriage and which is maintained at a contracted fixed length during vertical swinging of the bucket by unit 33 to position the bucket so that its inclination to the surface on which the machine is supported is maintained within an angular range that will prevent the contents of the bucket from falling out as it is swung vertically with respect to the surface. Preferably the unit 34 is completely contracted during vertical swinging of the bucketsupporting arms 23.
Patent GB-1489880-A (GB)
Title: Cooling of internal combustion engines
IPC: F01P5/06
Filed: 1974-12-23
Abstract: 1489880 Axial flow fans INTERNATIONAL HARVESTER CO 23 Dec 1974 [26 Dec 1973]  55567/74 Heading F1C A fan which blows air through a radiator of an I.C. engine is surrounded by a cowl 38 which is connected to the radiator by a shroud 30, the cowl comprising a cylindrical portion 40 of axial length CF, a flared portion 42 of radius of curvature about a centre 46 given by R, and a radial flat portion 44 of radial width RF, the following relationships holding: RF = AW/3, CF = AW/3 and R = 2AW/3, AW being the projected width of the fan blades which extend axially between a plane passing through the connection of shroud 30 and portion 40 or displaced no more than 12% of AW therefrom, and a plane which is coincident with the radial flat portion 44 or displaced axially from portion 44 by no more than 12% of AW; these relationships resulting in a reduction of fan noise.
Patent GB-1432059-A (GB)
Title: Hydraulic booster brake mechanism
IPC: F16D65/28
Filed: 1973-12-04
Abstract: 1432059 Fluid-pressure brake boosters MIDLAND-ROSS CORP 4 Dec 1973 [6 Dec 1972] 56090/73 Heading F2F An hydraulic brake booster mechanism 10 comprises a housing with an inlet 15 an outlet 16 and a supply chamber 50 in communication with the inlet, a power piston 42 movable in a bore and partly defining a power chamber 112, a control valve 44 for admitting fluid from supply chamber 50 to power chamber 112 to move piston 42, a demand valve 160 movable, in response to pressure in the supply chamber and against pressure of that portion of fluid between inlet and outlet, from a first position, in which substantially all fluid flowing into the inlet is directed to the outlet, to a second position in which fluid flow between the inlet and outlet is restricted, the said restriction increasing as the valve moves from first to second position. The demand valve has a differential piston 164 with one end slidable in a bore 168 against a spring 172 and the other end formed with a stem portion 180 slidable in a bore 182. When increased pressure is needed for braking piston 164 is moved to the left to obstruct flow from a cavity 184 to an enlarged chamber 186, causing a back pressure which requires a steering pump 12 to increase the pressure delivered to inlet 15 so that increased pressure is available for utilization by valve 44 for controlling the operation of the booster brake mechanism.
Patent GB-1169897-A (GB)
Title: Anticariogenic Food Product and process for producing same
Inventor: MUHLER JOSEPH CHARLES
IPC: A23L29/00
Filed: 1966-12-16
Abstract: 1,169,897. Anti-cariogenic comestibles. INDIANA UNIVERSITY FOUNDATION. 16 Dec., 1966, No. 56529/66. Heading A2B. Sugar-containing comestibles are rendered anti-cariogenic by incorporating therein at least 0.2 wt. per cent. NaH 2  PO 4  no acid being added to the comestible. Where the comestible is sugar-coated at least a part of the NaH 2  PO 4  is incorporated in the coating, or it may itself be in the form of a coating. Comestibles referred to include bakery products, candies, chewing gum, beverages, fruit preparations, and, in particular, ready to eat breakfast cereals. Reference has been directed by the Comptroller to Specification 1,053,122.
Patent GB-1243106-A (GB)
Title: Ether-acrylates
IPC: D06M15/277
Filed: 1969-11-21
Abstract: 1,243,106. Rendering textiles oil and water repellent. FMC CORP. 21 Nov., 1969 [25 Nov., 1968], No. 56979/69. Heading D1P. [Also in Divisions B2, C2 and C3] A substrate is rendered oil and water repellent by treating with a homopolymer of a compound of the formula: where Rf is a perfluoroalkyl group of 4-16 carbon atoms, R is H or CH 3 , m is 2 or 3, n is 1-12 and p is 1-4, a copolymer of such a compound with another or with non- fluorinated monomers containing a vinyl group, or a mixture of the ether-acrylate polymer and a non-fluorinated vinyl polymer. The substrate may be a textile.
Patent GB-1293680-A (GB)
Title: Improvements in or relating to measuring instruments
Inventor: STRADELLA GIUSEPPE
Filed: 1970-12-03
Abstract: 1293680 Pressure gauges G STRADELLA U STRADELLA G DANIELE and F GATTI 3 Dec 1970 [6 Dec 1969] 57529/70 Heading G1L In a Bourdon tube pressure gauge the end of the tube 19 is connected by an inextensible member, such as a chain or wire 17, passing over a sector of an adjustably expandable diameter pulley 1 to a toothed sector 15 wheel actuates and  indicator printer. The rim of pulley 1 is slotted at 3 and a conical member 2 is adjustable by a nut 9 along a spindle to effect an increase or decrease in the pulley diameter.