baber/WOPTO huggingface dataset:
Patent GB-851750-A (GB)
Title: Improvements in or relating to recuperators for pre-heating the blast of shaft furnaces
IPC: F28D7/10
Filed: 1957-10-28
Abstract: 851,750. Heat recuperators. FISCHER A.G., G. Oct. 28, 1957 [Oct. 27, 1956], No. 33633/57. Class 64(1) A recuperator for heating the blast of a shaft furnace as a cupola, comprises three concentric tubes radially spaced from each other and from the inner surface of a hollow chamber 2 surrounding and coaxial with the tubes, the annular gap between the innermost and outermost tubes 14, 16 being closed at one end and the end of the intermediate tube stopping short of the said end closure. In the form shown the tubes extend vertically, the intermediate tube comprising heat insulating material 38 and a cylindrical member 35 serving as a heat radiator being arranged within the innermost tube 14. Air to be heated enters a chamber 11 tangentially and hence flows with a helical motion through the annular gap 44 between the intermediate and innermost tubes and then in the opposite direction through the annular gap 45 between the outermost and intermediate tubes to a chamber 17 having a heated air outlet (not shown), arranged tangentially. Furnace exhaust gas enters an annular chamber 29 tangentially and is there mixed with air and burned. The combustion products from the chamber 29 flow with a helical motion downwardly through the annular gap 40 between the outermost tube 16 and the surrounding chamber 2 at the lower end of which there is a hopper 3 to receive dust &c. separated from the gases as they are deflected upwardly through the annulus 42 between the innermost tube 14 and the member 35 'before being withdrawn by a fan 36 through an outlet 46 at the upper end of the recuperator.
Patent GB-817931-A (GB)
Title: Improvements in the control of gas turbine plants
IPC: F23R3/26
Filed: 1955-11-24
Abstract: 817,931. Gas turbine plant. BROWN. BOVERI & CO. A.G. Nov. 24, 1955 [Dec. 18, 1.954], No. 33711/55. Class 110 (3). [Also in Group XII] An automatic control system for the combustion chamber of a gas turbine plant comprising a first, a second and a third valve which control the flow of air to the combustion zone, cooling zone and mixing zone respectively has each of the valves actuated by a regulating impulse which also controls the fuel supply to the combustion. chamber. A gas turbine combustion chamber 1 has a flame tube 2 which encloses a combustion space 2<SP>1</SP> and a mixing space 2<SP>11</SP>. Air enters the combustion chamber at 3 and 4 is the gas outlet. Fuel is supplied to the chamber by a nozzle 5 regulated by a power piston 6 which actuates a fuel valve 6<SP>1</SP>. A thr6ttle 7 which regulates the primary air supply and a valve 8 which controls the amount of cooling air passed to the mixing space 2<SP>11</SP>, are regulated by a power piston 9. A valve 10 controls the secondary air supply to the mixing space 2<SP>11</SP> and is controlled by a power piston 11. A retarding or accelerating control is formed by the accumulator 12, throttle 12<SP>1</SP> and compensating power piston 12<SP>11</SP>. When the power demand increases the pressure in the pipe 13 rises and this causes the fuel nozzle 5 and valves 7 and 8 to move in the opening direction and the valve 10 to be moved in the closing direction. The valves 7 and 8 are opened to a greater extent than is desirable for stable running condition. This assists the acceleration of the engine. After a period of time under steady running determined by the setting of the throttle 12<SP>1</SP> the pressure acting on the piston 12<SP>11</SP> becomes equal to that in the pipe 13 and then the valves 7 and 8 are closed a little.
Patent GB-1055444-A (GB)
Title: Resinous polyesters
IPC: C09D167/02
Filed: 1963-08-26
Abstract: A resinous polyester comprises the heat reaction product of (a) a dicarboxylic acid component consisting wholly or mainly of ethylenically unsaturated dicarboxylic acid comprising at least a major proportion of fumaric acid and no, or at most 25 mol. per cent based on total acids, saturated dicarboxylic acid, (b) a glycol component, and (c) a diene component comprising a major molar proportion of dicyclopentadiene in an amount providing from 0.6 to 0.9 mol. of dicyclopentadiene per mol. of ethylenically unsaturated dicarboxylic acid.  The glycol may be: ethylene glycol, propylene glycol, butylene glycol, 1:5-pentanediol, dimethylol propane, neopentyl glycol or a polyoxyalkylene glycol of M.W. up to 1200 and bisphenol based diols.  Up to 20 mol. per cent of polyhydric alcohols, e.g. glycerine and pentaerythritol or polyepoxides may be present.  Up to 50 mol. per cent of the diene component may be cyclopentadiene, 1:4-butadiene, tricyclopentadiene and tetracyclopentadiene.  The polyester resin may be dissolved in an organic solvent, e.g. benzene, toluene, xylene, butanol diethylene glycol or methyl ethyl ketone.  Up to 35% by weight of an amino plast resin may be incorporated into the polyester, e.g. reaction products of HCHO with urea and substituted molamines and benzoguanamine, which may be partially etherified with a C3-C8 alcohol.  In Example (1) an epoxy resin of M.W. 1000 consisting of the diglycidyl ether of 221 bis-(p-hydroxyphenyl propane), diethylene glycol, azelaic acid and xylol were heated to 400 DEG F., cooled, dicyclopentadiene added and reheated to 400 DEG F.  In Example (4) diethylene glycol, neopentyl glycol, fumaric acid and xylol were heated to 400 DEG F., cooled, dicyclopentadiene added and reheated. The polyester thus produced was mixed in Example (5) with a resinous chlorinated polyphenyl and xylol and applied as an enamel to tin cans.  Reference has been directed by the Comptroller to Specification 937,980.ALSO:A coating composition comprising an organic solvent having dissolved therein an unsaturated polyester (derived from a reaction mixture containing fumaric acid, dicyclopentadiene and a glycol) and optionally a heat hardenable aminoplast resin is used to coat metal articles e.g. coils, cans or sheets.  The metal may be aluminium.  In example (3) an unsaturated polyester solution was mixed with finely divided silica, toluene, aluminium pigment and petrolatum solution and sprayed onto a metallic base to give a coating of 2.8 mils which was cured at 385 DEG F.  In example (4) an unsaturated polyester was mixed with a resinous chlorinated polyphenyl and xylol and used as an enamel for the post solder side seam of tin cans.  Reference has been directed by the Comptroller to Specification 937,980.
Patent GB-1087848-A (GB)
Title: Improvements in or relating to broadeast receivers
Inventor: GABRIEL RALPH PARTON
IPC: H04N7/16
Filed: 1964-08-18
Abstract: 1,087,848. Pay-reception sets; aerial tests. R. &R. RESEARCH Ltd. Aug. 12, 1965 [Aug. 18, 1964], No. 33766/64. Headings H4A and H4R. Pay-reception equipment powered from A.C. mains comprises a battery-operated debitregistering means to which the fee-demand signals are applied, so that switching off of the receiver will not disable the debit-registering means, and means for detecting interference with the feeder conducting the signals to the receiver. In Fig. 1 signals from an aerial pass through a signal separator 5 and unscrambling unit 7 (e.g. as in Specification 1,028,025 or 1,068,881) to the receiver 8, while fee-demand signals are passed to a debit register 6. The latter may record the debt and disable the unscrambling unit if the debt exceeds a certain amount, or may require the insertion of a coin for the unscrambling unit to operate. Both debit register and unscrambling unit are powered from a battery B1 via a switch S2 closed when the listener wishes to view a programme; the battery is charged from the A.C. mains via D1. For use with a wire distribution system the unscrambling unit may be replaced by a relay After the transmission of the fee-demand signals, a latch-release signal is transmitted to operate a solenoid in unit 6 which opens S2 again(cf. Specification 1,011,410). It may be arranged that the receiver is rendered inoperative if a fee-demand signal is not received within a predetermined time after actuation of S2. The fee-demand signals maybe as in Specification 986,019. To guard against disablement of the aerial to prevent reception of the fee-demand signals, a resistor R1 between the halves of a dipole is included in a bridge with resistors R2-R4. Normally, this bridge is balanced, but if the aerial is disconnected or the feeder short-circuited, the bridge becomes unbalanced and relay RL1 is energized to open S1 and disable the unscrambling unit. The bridge is powered from the battery B1 so that it will operate even if the A.C. mains are switched off. Relay RL1 is in a sealed box so that a service engineer will be required to re-close S1 before the receiver will operate again. In an alternative form (Fig. 2, not shown), the bridge comprises three capacitors together with the self-capacitance of the aerial, and is energized by an oscillator supplied by the battery B1. The bridge relay will then respond if the aerial capacitance changes, e.g. by applying screening. In another modification, the power supply to the unscrambling unit is taken via a fuse which would blow if the aerial or feeder were short-circuited. The resistor R1 can also be used with a wire-distribution system. The received programmes may be television or sound only.
Patent GB-1359041-A (GB)
Title: Signal processing system
IPC: H04N9/455
Filed: 1971-07-19
Abstract: 1359041 Automatic frequency and phase control MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 19 July 1971 [20 July 1970 9 Dec 1970] 33836/71 Heading H3A In an arrangement in which an oscillator 45 is controlled in phase and frequency in dependence on a first reference signal f 1 , the oscillator output is converted to a higher frequency in a converter 47 by mixing it with a second reference frequency, e.g. from a crystal oscillator 46, before applying to the phase comparator 43. The first reference signal, which is a colour burst signal, may also be up-converted in a second converter 42. In a modification, Fig. 7 (not shown), the up-converted oscillator signal is mixed with the burst signal in a further converter (51) and the phase comparator compares the difference output signal from this converter with the crystal oscillator signal. The arrangement may also be employed in a video recording system, Fig. 8 (not shown).
Patent GB-800270-A (GB)
Title: Improvements in or relating to material spreaders
IPC: A01C15/00
Filed: 1953-12-07
Abstract: 800,270. Manure distributers. RICHARDSON & CO. (YORK), Ltd., H., and PROCTER, J. T. Dec. 7, 1954 [Dec. 7, 1953], No. 33961/53. Class 6(1). A distributer for dry powdered fertiliser comprises a storage hopper 6 for the material, conveying means 7, 9 for feeding the material uniformly to the distributer 10 which divides it into equal fractions which are fed by separate channels 11 to separate outlets 12 spaced transversely of the distributing vehicle 5. The conveying means comprises an endless belt 7 which discharges into a shoot 8 at the foot of a vertical elevator 9. The material is then fed, through a shoot 16, into a cylindrical container 10 having a vaned plate 13 rotating horizontally and throwing the material uniformly against the inner peripheral wall of the container 10, which may be fluted. The upper ends of conduits 11 are spaced peripherally around the base of the container 10. In a modification, the spinner 13 runs at such a speed as to create an air pressure within the easing 10 which assists the ejection of the powder.
Patent GB-1438561-A (GB)
Title: Rotary soil-engaging members
IPC: A01B29/04
Filed: 1973-07-17
Abstract: 1438561 Rollers C VAN DER LELY NV 17 July 1973 [18 July 1972] 34085/73 Heading A1B [Also in Division F2] The subject matter is the same as that of Specification 1365498 except the elongate roller elements 20 are positionable in different longitudinal positions to lengthen their working life. The roller elements 20 are retained by pins 22 in various holes in the elements 20. Bearing surfaces 19 are provided in the supports 17 which may be substantially vertical or inclined as shown. The elongate elements may also be turned end to end.
Patent GB-1122407-A (GB)
Title: Self-adhering sheet product
IPC: C09J7/10
Filed: 1965-08-10
Abstract: Elastic stretchable self-adhering tapes are formed from compositions that include polymers based on isobutylene, butadiene and styrene. In Example 1 such tapes are prepared from a composition containing an isobutylene/isoprene copolymer (32 parts), an iso-butylene polymer (18 parts), butadiene/styrene copolymer comprising 23.5 mol per cent of styrene (10 parts), butadiene/styrene copolymer, containing 85 mol per cent of styrene (14 parts), chlorinated biphenyl (12 parts), diatomaceous earth silicate filler (28 parts) and 10 parts of tackifiers, stiffeners and other additives.ALSO:An elastic stretchable self-adhering sheet product rollable on itself for storage without a removable liner comprises an elastic self-adherent web stretchable by at least 50% of its original length without breaking having on at least one surface a thin substantially non-tacky frangible layer firmly adherent thereto and subject to shattering when stretched by substantially less than 50% of its original length, said layer or layers in the elongated condition of the sheet being fragmented and separated to permit adhesion between superposed portions of the sheet product.  The frangible layer may comprise closely spaced dots of coating material and may be of a methyl, ethyl or isobutyl methacelate polymer, a chlorinated polypropylene, polystyrene, a styrene maleic anhydride co-polymer, or a bis-phenol A epichlorhydrin copolymer or of an insulating enamel or water dispersed latex paint.  The web may be formed from compositions that include polymers based on isobutylene, butadiene and styrene. The coatings may be translucent or transparent and, for use as electrical insulating tapes, should have a high resistivity.
Patent GB-523057-A (GB)
Title: Improvements in telephone and like electric signalling systems
IPC: H04M9/00
Filed: 1938-11-24
Abstract: 523,057. Multi-station public address systems; direct-call telephone systems. DEHN, F. B. (Guided Radio Corporation). Nov. 24, 1938, No. 34246. [Class 40 (iv) ] In a telephone or public address system the transmitting station is connected to one or more receiving stations over two earth-return circuits simultaneously by a pair of transformers at each end and the line windings of these transformers are shunted by resistances or are arranged to be short-circuited on the occurrence of a break in the associated transmission wire. Two way systems; supervisory arrangements. In one arrangement, Fig. 1, in which the transformer line windings are bridged by resistances 11 ... 14, the instrument at one end is connectible at will to the input or output side of an amplifier, the other side being connected to the instrument windings of the transformers. Preferably corresponding points on the lines are at the same potential. In a modification, Fig. 2, means are provided for signalling the occurrence of ground faults and disconnections and for shunting the line windings of the transformers associated with a broken line to reduce the impedance of the instrument windings. The system is set in action by the manual operation of relay contacts 16, 17 which are then held by the energization of relays 11, 12 in series with relays 13, 14 at the other end of the line. If either line wire develops a ground fault the potential of the point to which relay 18 is connected is changed and the relay lights lamp 20. If either line is broken, relays 11 to 14 fall back and relay 25 or 26 pulls up over the other line in series with 13 or 14. Lamp 37 is thus lit and the line windings corresponding to the broken line are short-circuited. Similar arrangements may be provided in one-way systems. One-way systems. As shown in Fig. 3, the transformers are wound so that the transmission wires are at the same potential. All the loud-speakers are coupled to the line between two shunts provided by pairs of resistances 46, 47 and 48, 49. In a modification Fig. 4 (not shown) in which a single transmitter with the aid of two or more transformers in series feeds two or more systems of the kind shown in the other Figure, means are provided for grounding both wires of a, pair to disable groups of loudspeaker stations at will.
Patent GB-1267590-A (GB)
Title: Automatic extraction and exhaust pressure type turbine control system
IPC: G05D13/00
Filed: 1969-07-08
Abstract: 1,267,590. Automatic control of steam turbines. TOKYO SHIBAURA DENKI K.K. July 8, 1969 [July 8, 1968], No.34296/69. Heading G3R. In a multi-stage turbine with steam extraction between stages, constant speed or pressure conditions are maintained by automatically controlling electro-hydraulic steam inlet valves to each stage in dependence on a combination selected by a switch from electrical signals corresponding to extraction steam pressure, exhaust steam pressure and turbine speed. As shown, electrohydraulically operated valves 47, 48 respectively control the flow of steam to and between high- and low-pressure stages 11, 12 of a turbine driving an electrical generator 14. Exhaust steam and steam from between the stages is led off through conduits 20, 17 to supply energy for other purposes. Electrical signals dependent on turbine speed, interstage steam pressure and exhaust steam pressure are produced at 22, 24, 23 and compared with desired values set at 26, 27, 25 to produce error signals at 32, 33, 31. With a selector switch 51 in the position shown, the speed error signal 32 controls both steam valves 47, 48 in the same sense to correct the speed without affecting the interstage output of steam and the interstage steam pressure error signal 33 controls the steam valves in opposite senses, by virtue of inverter 45, to correct interstage pressure without affecting turbine output. With switch 51 in its other position, the interstage steam pressure error signal 33 controls main steam inlet valve 47 only to correct interstage pressure without affecting exhaust steam pressure which is automatically controlled by the exhaust steam pressure error signal 31 controlling both steam valves 47, 48 in the same sense. The control signals are suitably weighted in dependence on the thermal drops in the turbine stages by potential dividers 40, 41, 42. If the speed error signal exceeds a value set at 49, a device 50 operates to close both steam valves 47, 48.
Patent GB-731517-A (GB)
Title: Improvements in and relating to the operation of hydraulically actuated reversible variable pitch propellers
IPC: B64C11/42
Filed: 1953-12-09
Abstract: 731,517. Variable pitch propellers. BLACKBURN & GENERAL AIRCRAFT, Ltd., TETLEY, R. C., and BATEMAN, J. E. Dec. 9, 1953, No. 34332/53. Class 114. In a system for operating hydraulically actuated reversible variable pitch propellers including a brake /unbrake selector valve 4 and "brake" and "unbrake" solenoid-operated valves 37 and 43 respectively, the "brake" valve 37 is designed so that after actuation it remains displaced by hydraulic pressure received through the "unbrake" valve 43 which is designed on actuation to place the "brake" valve 37 in further communication with the drain or hydraulic exhaust line. Normally the member 15 of the valve 4 is held in the position shown by its centering spring 29, hydraulic liquid flowing between the constant speed unit and the pitch changing mechanism through lines 11, 12, 13, 14. To move the propeller blades into reverse pitch the valve 37 is actuated so that its coil draws its member 38 to the right against the spring 39. Pressure liquid from line 1 and booster pump 6 then flows through lines 7 and 27, valve 43, line 46, valve 37 and line 16 to raise the member 15 against the action of its spring displaced liquid flowing through the line 26, valve 43 and lines 48 and 28 to the drain 22. Pressure liquid then flows from line 7 through valve 4 into line 14 to move the propeller blades towards fine pitch and through zero to reverse pitch, liquid from the "coarse pitch" side of the pitch varying mechanism flowing from line 13 through the core 3 of the valve 4 to line 2. So long as the valve 43 remains unenergized the member 38 remains displaced in spite of an electrical failure since hydraulic pressure from line 46 flows through bore 38<SP>2</SP> to act on one end of the member 38 to counteract the spring 37 on the other. To return the blades to positive pitch the coil of valve 43 is energized to move the member 44 to the right. Pressure liquid from line 27 then flows through valve 43 into line 26 to move the valve member 15 downwards, liquid flowing out at the other end through line 16. Liquid then flows to the pitch changing mechanism from line 7 and through valve 4 into line 13 to move the blades towards coarse pitch, and flows from the mechanism from line 14 through valve core 3 to line 2.
Patent GB-884137-A (GB)
Title: Improvements relating to electron discharge devices
Inventor: HALL DONALD LESLIE
IPC: H01J1/20
Filed: 1959-10-09
Abstract: 884,137. Discharge tubes. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Oct. 3, 1960 [Oct. 9, 1959], No. 34352/59. Class 39(1) A cathode has projections 11, 12 extending from its ends and each having a width less than that of the associated end of the cathode, which engage in apertures in two insulating discs 1, 2 which are spaced apart, e.g. by rods 5, 6 or an anode. The cathode is secured relative to the first disc 1 and the projection 11 is formed with a shoulder 15 which abuts against one surface of disc 1. As shown, a cathode tab 21 is secured to rod 6 to support the cathode and provide an electrical connection thereto, or alternatively a bracket secured to disc 1 may be welded to the cathode. The projections 11, 12 are each formed from two parallel flat tongues which extend from the tubular cathode of rectangular cross-section. Transverse slits 23-26 are formed in the discs 1, 2 to increase the leakage path between the cathode 7 and grid 17.
Patent GB-837614-A (GB)
Title: Improvements in or relating to windows of stained glass or like material
IPC: C03C17/00
Filed: 1956-11-12
Abstract: 837,614. Windows. THOMPSON, M. D., and DRURY, C. E. Oct. 21, 1957 [Nov. 12, 1956], No. 34510/56. Drawings to Specification. Class 20(3) A single length of plastic material is preformed so as to accommodate and surround a window preferably comprising decorative panels constructed as described in Specifications 837,612 and 837,613 are referred to.
Patent GB-850248-A (GB)
Title: Apparatus for cold bending of tubular bodies and the like
IPC: B21D7/06
Filed: 1958-10-28
Abstract: 850,248. Angular bending. LANG, L. Oct. 28, 1958 [Oct. 30, 1957], No. 34512/58. Class 83 (4). A tube bender in which a tube is bent between, and by relative movement of, a bending shoe and counter-pressure members carried by a frame is characterized in that a member carrying the shoe is loose on an hydraulic cylinder so o as to be retractible therealong when the bender is not in use, the piston of the cylinder moving the frame carrying the counter-pressure members to cause them to bend a tube about the shoe. An hydraulic cylinder 1 is formed on its outer surface at its outer end 12 with a shoulder 32 and conical surface 33 engaged by a ring 13 secured to the ends of members 14a, 14b which carry at their other ends a bending-shoe 21. Thus when not in use the ring 13 together with the members 14d, 14b can be moved back along the cylinder 1 to make the bender more compact. A piston-rod 34, on a piston 35, in the cylinder 1, is secured to a frame 29, 22 carrying counterpressure rollers 25a, 25b and slidable along the members 14a, 14b. In operation a lever 4 is depressed by hand and then raised by a spring 10 so that during the upward stroke a pump piston 9 sucks hydraulic fluid 46 from a tank 45 past a valve 55 and into chambers 57, 59. On the next downward stroke the pump piston 9 forces the hydraulic fluid from the chamber 59, past a valve 51 and through a port 65 to a space 66 behind the piston 35 to push it forward so that the counter-pressure members 25a, 25b move to bend the pipe around the shoe 21. A valve 52 is then opened by hand so that a spring 40 may return the piston 35 and fluid may pass through a passage 48 to the tank 45.