baber/WOPTO huggingface dataset:
Patent GB-904384-A (GB)
Title: Improvements in or relating to saturable reactors
Inventor: FLETCHER CHARLES PHILIP
IPC: H01F29/14
Filed: 1959-11-23
Abstract: 904,384. Inductors. GENERAL ELECTRIC CO. Ltd. Nov. 1, 1960 [Nov. 23, 1959], No. 39685/59. Class 38 (2). The two groups 5-10, 11-16 (Fig. 1) of limbs of a saturable reactor which takes an almost sinusoidal current, e.g. from an alternator on test, each carry a set of (six) windings, the first set of (three) series pairs, 20 and 22, 24 and 25, 26 and 27 (Fig. 2) being star connected and the second set of (three) series pairs 28 and 29, 30 and 32, 33 and 34 being delta connected with both sets connected in parallel in an equiphase 3-phase supply 17-19 to give a 30 degrees phase displacement between fluxes induced in corresponding members of the groups of limbs. The fluxes produced in yokes 3 and 4 (Fig. 1) by the windings on the upper limbs connected to them are opposed to the flux produced therein by the windings in the lower limbs connected to them so that less material is needed in these yokes. D.C. windings 35, 36 (Fig. 2) in opposition are arranged to link respectively limbs 5, 6, 7, 11, 12, 13 and 8, 9, 10, 14, 15, 16, the A.C. windings being so arranged that, for example, core limbs 5-7 saturate during one half-cycle and limbs 8-10 saturate during the other half-cycle. The winding arrangements are said to suppress even harmonic currents together with the 3rd, 5th, 7th and tripler harmonics so that as the 11th and 13th harmonics are small the load current is substantially sinusoidal. An additional arrangement for suppressing harmonic fluxes which are odd multiples of three (triplen fluxes) consists of parallel connected coils 38, 39 (Fig. 3) embracing the limb groups 5-7 and 8-10 respectively and coils 38<SP>1</SP> and 39<SP>1</SP> similarly enclosing the lower groups of core limbs, the coils being interconnected as shown so that sixth harmonic fluxes are also suppressed.
Patent GB-1063481-A (GB)
Title: Improvements in or relating to oil burners
Inventor: BUNNAGAR ALAN
IPC: F23D11/08
Filed: 1963-10-11
Abstract: 1,063,481. Rotary oil burners. HENRY WILSON & CO. Ltd. Oct. 2, 1964 [Oct. 11, 1963], No. 40111/63. Heading F4T. In a burner of the rotary type an outer vertical wall (14) surrounding the rotor (22) is lined internally by an absorbent paper, felt or cloth made of asbestos or quartz fibres or a fibrous ceramic material. The burner also has an inner wall (15) of lesser height than the outer wall, and an electric resistance controlled by a thermostat (26) is disposed in the trough formed by the inner and outer walls.
Patent GB-1495306-A (GB)
Title: Supporting of curved girders for the trackway of an overhead railway system
IPC: E01B25/24
Filed: 1975-10-01
Abstract: 1495306 Supporting elevated railways DEMAG AG 1 Oct 1975 [1 Oct 1974] 40132/75 Heading B7L A girder 1 for the trackway of an overhead railway is supported by columns 4 located solely at the ends of the girder which is curved so that no one straight line through its centre of gravity passes through both columns, the columns 4 including members 4c which overlie parts 3a extending from the radially inner side of the girder to resist tilting of the girder. The parts 3a are the radially inner ends of brackets 3 extending through the girder ends, the other end 3b of each bracket being supported by members 4b of the columns, with the interposition of sliding bearings 6 and 6a at each end. The columns 4 support junctions of adjacent girders 1, which are box girders reinforced by bulkheads and aligned at the junctions by projections 7, 7a and bolts 9. Each girder carries alternative sets of rails for suspended or non-suspended vehicles.
Patent GB-951576-A (GB)
Title: Polymerisation of styrene
Inventor: KETLEY ARTHUR DONALD
IPC: C08F12/08
Filed: 1962-10-24
Abstract: Crystalline polystyrene is produced by contacting a solution of styrene in an inert liquid solvent with a solid boron trifluoride ether complex (e.g. a diethyl ether complex) at a temperature below the freezing point of the complex and above the freezing point of the solution.  The specified solvents are propane, butane and methylene chloride and a suitable temperature is not greater than -60 DEG C. The catalyst may be quenched with methanol.
Patent GB-1109748-A (GB)
Title: Process for the production of moulded shaped structures having foamed cores
IPC: B29C44/04
Filed: 1966-09-09
Abstract: 1,109,748. Moulding foamed articles. ALLIED CHEMICAL CORPORATION. 9 Sept., 1966 [10 Sept., 1965], No. 40461/66. Heading B5A. A foam plastics article, having an exterior non- foamed skin, is made by injecting a mixture of the material plus a foaming agent into a mould which is preheated to within at least 44À5 C. of the melting point of the material, cooling the material in the mould to form a solidified skin in contact with the mould whilst maintaining sufficient pressure to prevent any foaming of the material, and finally releasing the pressure to enable the material to expand and form a foamed core within the skin. The material may be polystyrene or polyethylene and is injected into a preheated mould cavity formed by an article defining part 2 and a reservoir 1 in which a piston 5 slides. The mould is subsequently cooled and the injected material put under pressure by forwarding the piston 5, escape of the material being prevented by a cooled plug of material which forms in the injection channel 3. After a skin of the desired thickness has been formed, the piston is withdrawn to release the pressure thus enabling the material to expand. The article is finally taken from the mould and the unwanted portions formed by the reservoir and the injection channel are cut off.
Patent GB-1338464-A (GB)
Title: Measurement and control of ink density
IPC: G05D25/02
Filed: 1971-08-31
Abstract: 1338464 Measurement of ink density in printing HARRIS-INTERTYPE CORP 31 Aug 1971 [12 Oct 1970] 40557/71 Heading B6C [Also in Division G1] In an apparatus for measuring the ink density of a test patch of ink on sheet material with respect to a reference patch on said sheet a beam of light is directed on by the sheet so as to impinge on the two patches, and first and second light sensor means angularly spaced from the beam receive the reflected light and provide first and second signals which are processed to provide an output indication of the colour density of the test patch area. In a conventional sheet fed lithographic press, including an ink fountain 20 a plate cylinder 10, a blanket cylinder 12 an impression cylinder 14 and a delivery cylinder 16, a gauging apparatus G is adjustably positioned on a support bar 48 so as to monitor each sheet member 50 carried by the impression cylinder 14. Each sheet member 50 carries a test patch and a reference patch for each colour ink used and the gauging apparatus comprises an intermittently actuated Xenon lamp, which simultaneously illuminates the test and reference patches, and a pair of photodiodes TS-1, RS-1 for receiving the light refiected off the two patches. Each pair of output signals are fed to a separated gated densitometer control circuit GD-1, GD-2, GD-3, and GD-4 (if there are four colours), Fig. 5. As shown each gated densitometer control circuit output is fed to a signal recorder SR, an analogue deviation meter AM, a digital meter DM and a corresponding control meter MC1 or MC2 &c. which controls the ink flow from the ink fountain 20. The operation of the densitometer and the lamp L are synchronized with the movement of the sheet members 50 by means of a cam 52 activating a switch 56 and 58 which forms the synchronizer pick-up shown in Fig. 5, so that the lamp and the densitometer control circuit are simultaneously activated. A suitable circuit for the gated densitometer is disclosed (Fig. 6, not shown). In order to keep its lens surface and filter surface clean, the gauging apparatus C includes an air supply with tubing to direct air currents across the surfaces. A further embodiment, a conventional web fed lithographic press, Figs. 10 and 11 (not shown), is disclosed and it incorporates the gauging apparatus before monitoring test patches on the web emerging from the press. However, preceeding each set of test and reference patches is a mark which is sensed by an additional sensor (220, Fig. 11, not shown). The additional sensor replaces the cam 52 of the previous embodiment as a. means of synchronizing the lamp and the densitometer. A suitable electronic circuit for the additional densitometer is also disclosed.
Patent GB-1341716-A (GB)
Title: Method of moulding tubular heating elements by isostatic  compression
Inventor: BROCKLEHURST W C
IPC: B30B11/00
Filed: 1971-08-31
Abstract: 1341716 Isostatic pressing ELPAG AG CHUR 31 Aug 1971 [3 Sept 1970 15 Jan 1971] 40602/71 Heading B5A A tubular heating element which is to be isostatically compressed is embedded in a freeflowing granular pressure transfer medium, e.g. steel and glass balls, zircon shot, aluminous abrasive, rubber and plastics particles, and placed in a press in which it is subjected to a pressure above 14,200 1b. f/in<SP>2</SP>. but below that at which the granular medium breaks down, the pressure being transmitted to the article solely by the granular medium which retains its free flowing nature after application of the pressure. Heating elements comprising wire spirals in a insulator, e.g. MgO in U-shaped steel tubes are placed in a two-part flexible container 5 held on rigid end plates 1 and an intermediate ring 6 by straps 2. In other embodiments the container is a sack with a rigid or flexible closure. The granular medium is vibrated into the container which is then closed and placed in a holder which lets through a primary pressure transfer liquid to act on the container and its contents.
Patent GB-1275944-A (GB)
Title: DETERMINATION OF THE alpha-AMYLASE ACTIVITY OF A MATERIAL
IPC: C12Q1/34
Filed: 1969-08-14
Abstract: 1275944 Determination of amylase F HOFFMANN-LA ROCHE & CO AG 14 Aug 1969 [19 Aug 1968] 40606/69 Heading B1X [Also in Division C3] A reagent test kit for determining amylase activity comprises separate containers of (a) buffered (pH 6.9 to 7.1) solution of a waterinsoluble complex, composed of a water-soluble reactive dye, as defined, and an amylase containing material, and sodium chloride, (b) a crystalline phosphate having a pH of 4.2 when dissolved in water, and (c) as a standard, a solution of a water-soluble reactive dye, as defined. In determining the α-amylase activity of a test material, the complex is subjected to the enzymatic action of the test material in a aqueous phosphate buffer, at a pH of 6.9- 7.1 and a temperature of 37‹-40‹C, and containing at least 0.01 mol/l of an alkali metal chloride catalyst, the reaction is quenched and the colour of the supernatant compared with a standard.
Patent GB-957143-A (GB)
Title: Improvements in or relating to apparatus for blending materials
IPC: B29C48/03
Filed: 1962-10-29
Abstract: 957,143. Blending granular materails. WILSON PRODUCTS Inc. Oct. 29, 1962 [Aug. 8, 1962], No. 40883/62. Heading B1C. [Also in Division B8] Apparatus for blending dry free-flowing materials comprises a hopper 176 discharging on to a rotary table 74, and a two-compartment hopper 168 having discharge outlets 172, 214 discharging on to another, lower, rotary table 44 ; the flow of material from the hopper is controlled by slides 170, 178. The lower table 44 is continuously rotated in a clockwise direction by the motor 88 ; the upper table 74 is intermittently advanced counter-clockwise by the continuously-rotated three-lobed cam 144 acting through the pivoted arm 114 and friction pawls 132, 151. The amount of advance and consequently of material supplied can be adjusted by the pivoted stop cam 156, the position of which is indicated by index and scale 160, 162. Materials are swept off the upper table on to the lower by the fixed scraper blade 184 and from the lower table into the shoot 249 by the fixed scraper blade 196. Materials from the hopper outlet 214 travelling round on table 44 have to pass through the passage 228 formed between fixed guides 220, 222, while materials from the hopper outlet 172 are discharged on to the table through an aperture 212 in the hopper base 215. A slide 230 carrying a baffle 234 simultaneously varies inversely the size of the aperture 212 and passage 228. The guide 222 is vibrated by an eccentric pin 246 to prevent material bridging and blocking the passage 228. The shoot 249 leads to the hopper 248, see Fig. 6 (not shown), of an extrusion machine, the level in which controls the motor 88 by means of a micro-switch 266 actuated by the pressure of material on a diaphragm 254, see Fig. 9 (not shown). In a modification, Fig. 13 (not shown), the size of the aperture 212 is fixed and the slide and baffle vary the size of the passage 228 only.
Patent GB-908589-A (GB)
Title: Viscous materials conveying apparatus
IPC: B65G53/08
Filed: 1960-12-01
Abstract: 908,589. Pneumatic conveyers. PONNDORF, W., [trading as PONNDORF MASCHINENFABRIK KOMM.-GES.]. Dec. 1, 1960 [Jan. 13, 1960], No. 41345/60. Class 78 (1). Viscous, porous material is fed by a screw conveyer 2 into a rotary valve 4 and is then conveyed along a pipeline 8 by the action of compressed air acting through ports 7.
Patent GB-1349920-A (GB)
Title: Cooling devices for electronic components
IPC: H05K7/20
Filed: 1972-09-07
Abstract: 1349920 Cooling slabs; hollow-plate heat exchange elements SIEMENS AG 7 Sept 1972 [9 Sept 1971] 41449/72 Headings F4H and F4S [Also in Division H1] Electronic components such as thyristors 17 are cooled by a flow of liquid through a channel between two plates 1, 8. The plate 8, which carries coolant pipe connections 11 and is attached, e.g. via metal block 16, to the thyristors 17, is made of high thermal conductivity metal and the plate 1, which may be made of sheet metal or heat-resistant plastics material, has a central flat-bottomed recess occupying most of its area, which recess defines the coolant channel. The recess may be shaped to define a U-shaped or meandering channel. Various methods of attaching the plates 1, 8 to each other and to the block 16 are disclosed. Other semi-conductor components which may be cooled in the manner described are heavy duty transistors and rectifier diodes, and transformers and impedance coils are also mentioned.
Patent GB-1262350-A (GB)
Title: Cooling particulate solid materials
IPC: F28D7/08
Filed: 1969-08-20
Abstract: 1,262,350. Cooling granular materials. FULLER CO. 20 Aug., 1969 [30 Aug., 1968], No. 41452/69. Heading F4U. Apparatus for cooling granular materials in particular for the in-circuit cooling of mill ground cement, comprises a cylindrical chamber 4 with material inlet 20 and outlet 22 divided by a baffle 24 into compartments 26, 28, each having eight sets of cooling tubes 30 disposed above a fluidizing air distributer plate 40 associated with plenum chambers 64. Tubes 30 are welded to a top plate 32 supported by baffle 24 and by brackets 34, tubes near the inlet 20 being provided with wear plates 70. Plate 40, which slopes downwardly towards a material trap 42, is formed with side sections 58 sloping inwardly to a centre section 56 forming a channel. In a modification (Figs. 7 and 8), the plate section below compartment 28 is flat, the section below compartment 26 being formed similarly to that shown above. The trap 42 collects oversize or tramp material and is formed with a gate valve 46 operated by motor 48 and with alternately-operated discharge valves 50, 52. Regions of tubes 30 near the bottom of baffle 24 where there is material cross-flow may be coated with a synthetic resin to prevent adhesion of charge particles.
Patent GB-1138359-A (GB)
Title: Gas or vacuum-operated couplings
Inventor: CRANAGE BIDWELL CHAPMAN
IPC: F16L37/22
Filed: 1966-09-16
Abstract: 1,138,359. Pipe joints. STILE-CRAFT MFRS. Inc. 16 Sept., 1966, No. 41524/66. Heading F2G. A pipe coupling comprises a hollow nipple 10, a tubular body 14 having a bore 15 receiving the nipple, a pair of latching segments 32 received in diametrically opposed openings in the body and movable radially inwards into engagement with external threads 11 on the nipple, a tubular plug 21 in the body having a sealing ring 26 for sealing engagement with the nipple, a sleeve 35 slidably mounted on the body for urging the latching segments into locking engagement with the nipple, and a chamber 41 defined between the body and a pressure surface 43 of sleeve which is communicatable with the flow passage through the made coupling whereby the influence of the fluid pres - sure in the flow passage acts in the chamber to maintain the sleeve in its locked position, Fig. 3. In operation, as the nipple is inserted, the segments ride over the external nipple threads and the 0-ring 26 seals against the conical nipple sealing surface 13 whilst a poppet valve 49 within the nipple is opened by the plug. Fluid flows through nipple and plug and acts in a chamber 27 behind the plug to urge the latter into tighter engagement with the nipple. Fluid pressure is transmitted from this chamber via a duct 44 into chamber 41 so that the sleeve 35 is moved forwardly, the camming surface 40 on the sleeve engaging a corresponding surface 34 on the segments to urge the latter into locking engagement with the nipple. To constrain the sleeve to reciprocative movement a pin 51 on the sleeve is guided in a longitudinal slot 50 in exterior of the tubular body. In a modification, Fig. 5 (not shown), the plug 21 is slidably mounted on a tubular stem 52 of the body part 16, said stem actuating the poppet valve in the nipple instead of the plug. In a similar embodiment, Figs. 6 and 7 (not shown), intended for coupling vacuum lines, the vacuum acting in the coupled nipple and plug bores also acts in a chamber between the sleeve 14 and tubular body 82 to urge the sleeve into the locking position, and maintain it there. The final embodiment, Figs. 8 and 9 (not shown), is intended for nitrous oxide installations and a stepped nipple and a correspondingly bored spigot is provided. The nipples of the various embodiments are different in shape and size so that, for example, a nipple connected to oxygen line cannot be connected to a vacuum coupling.
Patent GB-1274106-A (GB)
Title: Analyzer for analyzing an analog signal
Inventor: DEWEY RAYMOND D
IPC: G06M11/04
Filed: 1969-08-20
Abstract: 1,274,106. Monostable circuits; television. REYNOLDS METALS CO. 20 Aug., 1969 [15 Oct., 1968], No. 41634/69. Headings H3T and H4F. [Also in Divisions G1 and G4-G6] A specimen, e.g. metal article, blood sample, polluted air, having features or particles within a particular area which it is desired to count is investigated by a video camera whose output is passed through a threshold device and a width discriminator before being displayed on a monitor or counted by a counter. As shown, a conventional T.V. camera scans a specimen 1 through a microscope or lens 1. The camera is arranged to produce an analogue output signal which is maximum when scanning light features and minimum for black. This signal is applied to an amplifier 13 which includes a differential comparator, Fig. 2 (not shown), and produces an output only when the input signal is above a set level, i.e. darker than a particular grey level. A potentiometer in the amplifier 3 is adjustable by an operator. The remaining signal is applied to the input of circuit 33 which includes a delay circuit and a trigger circuit. If the input signal pulse is longer than the delay period, which is adjustable, an output signal passes to NAND gate 53 and switch S. Parallel connected inverter 47 is used to provide a signal at the instant the input pulse stops so that the signal to the gate is abruptly terminated. Circuit 33 has a fast response time and can resolve features spaced by  per sec. The output of gate 53 is applied directly to NAND gate 67 and also through switch S and delay 73 to gate 67. Delay line 73 delays the signal by one line scan and the arrangement is such that gate 67 only provides an output when there is a delayed signal present at its input without a real signal present which ensures that each feature is only counted once. The particular area of investigation is selected by altering the operational instant of multivibrators 127, 129; 111, 113, (for details see Fig. 3, not shown), the former pair being operated by vertical synchronizing pulses and the latter pair by horizontal synchronizing pulses. By means of these devices, each of which includes an adjustable delay the edges of the field of measurement can be defined and altered at will. The counter 6 is enabled by operating push-button 133 and works only for a single scan of the field after which bi-stable circuit 135 resets. By operation of various switches the actual picture being scanned can be displayed on monitor 7 with the counted pulses superimposed; alternatively the pulses can be shown alone. By the use of oscillator 99 the counter may be calibrated so that its reading represents the total area of features present in the scanned area. By reversing switch 19 the apparatus may be set to accept only features lighter than the grey level.
Patent GB-1169043-A (GB)
Title: Brighteners for Cyanide Zinc Electroplating Baths
Inventor: HARROVER ROBERT EDWARD
IPC: C25D3/24
Filed: 1966-09-19
Abstract: 1,169,043. Zinc electro-plating baths. COWLES CHEMICAL CO. Sept.19, 1966, No.41790/66. Heading C7B. An aqueous alkaline zinc cyanide plating solution contains zinc ions and at least one brightener having the formula where R is a monovalent or divalent substituted or unsubstituted hydrocarbon radical having 1-4 carbon atoms, substituents being selected from the group -NH 2 , -OH, and -COOR 1 , where R 1  is H, NH 4  or an alkali metal radical; M is NH 4 , CH 3 NH 3 , (CH 3 ) 2  NH 2 , Na, K, Ca, Zn, Mg, Cd, Ni, Fe, Co, Mo, Mn and n is equal to the valance of M. Examples are given of thiuram disulphides and thiocarbamates having the above formula. The electrolyte may also contain polyvinyl alcohol and/or a reaction product formed by reacting substantially equimolar quantities of at least one compound having the nucleus with a compound having the formula where R is a radical selected from hydrogen, monovalent and divalent saturated substituted and unsubstituted radicals having 1 to 4 carbon atoms in which the substituents may be -NH 2 , or -OH radicals, phenyl radicals, or monovalent or divalent substituted or unsubstituted alicyclic radicals containing 5 or 6 carbon atoms i the ring and in which the substituents may be -CH 3 , -NH 2 , or -OH radicals or amino phenyl radicals. Examples of substances (a) include 2-thiohydantoin and its 1- acetyl, 1- methyl, 5- furfural, 5- benzal, or 5-(2<SP>1</SP> hydroxylbenzal) derivatives; 2- thiobarbituric acid and its 1- acetyl, 1- benzoyl or 1, 5- diacetyl derivatives; 2- thiopyrrolidone -4; 3- thio -1, 2, 4- oxadiazolidinone-5 and the corresponding thiadiazolidinone and triazolidinone compounds; 2- thio -1, 3- diazolidinone -4; 2- thioperhydroazin -6- one and the corresponding 1, 4- diazinone compound Examples of substances (b) include ammonia, isopropylamine, ethanolamine, piperazine, aniline, p-aminophenyl -4- methylcyclohexylamine, phenylcyclohexanolamine and p-aminophenyl-3 -aminocyclopentylamine. E.g. the reaction product may be produced by the reaction of 2-thiohydantoin with ethanolamine.
Patent GB-849278-A (GB)
Title: Improvements in nuclear reactors
Inventor: WOOTTON WILLIAM ROBERT
IPC: G21C19/06
Filed: 1957-01-31
Abstract: 849,278. Nuclear reactors ; handling materials in radioactive environment. BABCOCK & WILCOX Ltd. Jan. 30, 1958 [Jan. 31, 1957], No. 41796/59. Divided out of 849,277. Drawings to Specification. Class 39(4). The description is included in Specification 849,277 but the claims differ.