baber/WOPTO huggingface dataset:
Patent GB-850037-A (GB)
Title: Improvements in or relating to control mechanisms for variable-pitch propellers
Inventor: HAWORTH LIONEL
IPC: B64C11/30
Filed: 1958-06-05
Abstract: 850,037. Variable pitch propellers. ROLLSROYCE Ltd. May 22 1959 [June 5 1958], No. 18065/58. Class 114. In a control system for a V.P. propeller an hydraulic motor 13 14 is employed to adjust the blade pitch via eccentrically mounted links 12 under the control of a constant speed unit 17 18 24 which comprises a valve 17 controlling the flow of operating liquid to the motor 13 and 14 and a centrifugal governor device 24, driven at a speed proportional to the propeller speed, actuating the valve 17 loaded by the springs 25 and 60, to adjust it to maintain a selected speed. For control of selected reverse pitch angles the centrifugal device 24 is rendered inoperative by adjustment of the cam 68 and toggle arrangement 61, 64, 65, 66, 67 to load the spring 60 so that the governor device 24 tends to control the propeller speed at a value not reached in reverse pitch operation. The valve 17 is dispersed downwardly so that the extension 17c bears on the floating lever 39, The lever 30 is then rocked to rotate the cam 36 allowing the valve 17 to move downwards to reverse the pitch of the blades 11. The movement of the blades 11 is accompanied by rotation of the cams 42 which displace rearwardly the thrust plate 46 with consequent rocking of the lever 47 which rotates the cam 40 to return the valve 17 to its control position. The lever 30 is connected via linkage 33, 34, 37, 38 to the engine fuel control unit 31. The lever 47 is stabilized radially of the propeller axis by a link 54 which is pivoted to a point on the lever and to a universal connection 55 on the non-rotating structure at a point which is contained in a plane at right angles to the rotational axis of the propeller and spaced from the pivotal connection of the link and lever by a distance equal to the distance between said pivotal point between the link and lever and the centre of the universal connection of the lever. The fuel supply means may include a governor responsive to the speed of the propeller adapted to trim the fuel supply to prevent, in reverse pitch operation the speed exceeding the value of which the constant speed unit tends to become operative.
Patent GB-746574-A (GB)
Title: Photographic colour separation records for preparation of printing plates
IPC: G03F3/08
Filed: 1954-06-19
Abstract: 746,574. Photographic colour separation records. THORSLUND, O. E. G. June 19, 1954, No. 18076/54. Class 98 (2). Positive records for preparation of plates for the colour printing primarily of comic strips, drawings or simpler pictures, which are first provided in the form of positive drawings or outlines, or photographic black' and white, prints or half-tones, are made by placing a transparent material such as blank film on the origilial, colour painting this in tones of brilliance in inverse relation to the brilliance of the tones of a colour print to be produced and in colours partly coinciding with the colours of filters to be used in preparing the separation records, and photographing the painting in mirror-inverse manner against a non-reflecting background as of black cardboard through the filters to give separation records of positive character and suitable for photographic printing on to metal plates. Filters for two colour may be red and blue, for three colour red, green and blue. For white spaces the transparent material is left blank. In photographing, the reproduction camera is adjusted to take separations of correct size and a similar sized record for the black printer may be made by contact printing from a record prepared directly from the original. Instructions are provided for guidance of the artist in dealing with mixed shades. In some cases, the green separation record is used to make a yellow printing plate, with division into red, yellow and blue, but ordinarily two printing inks are used, greenish blue from the blue record and red-orange from the red record. Text to be printed is prepared in black against a white background and assembled with the blue record for eventual printing in greenish-blue or in this colour together with black when a black printer is used. Printing with more separations than the three colours and black is referred to.
Patent GB-494981-A (GB)
Title: Improvements in or relating to gas-operated firearms
IPC: F41A5/26
Filed: 1937-06-29
Abstract: 494,981. Automatic guns. GEBAUER, F., and DANUVIA IPARI ES KERESKEDELMI R. T. June 29, 1937, No. 18098. [Class 92 (ii)] Relates to gas-operated guns in which the passage 3 for the tapped gases extends in the form of a nozzle into a cavity in the front wall of the gas piston 4. According to the invention, a recessed annular dead space 8 is formed in the base of the cavity for the deposit of sediment. In the form shown, the space 8 is formed at the foot of a surface of rotation 10 extending to a point 7. The enlarged front end of the gas cylinder is closed by a plug 2 and a further dead space 13 is thus provided.
Patent GB-639727-A (GB)
Title: Improvements in or relating to heating devices
IPC: F42B3/00
Filed: 1947-07-09
Abstract: 639,727. Heating by chemical action. CATALYST RESEARCH CORPORATION. July 9, 1947, No. 18131. Convention date, Feb. 20, 1946. '[Class 64(ii)] A ventless cartridge for rapidly heating small quantities of water, foodstuffs or for like purposes comprises a cylindrical metal tube 2 with integral base closure 1 and sealed at the top by a closure member 3 having a central percussion cap 4 to ignite a combustible charge burning without the production of gaseous products. The charge comprises at least one reducing agent and one oxidizing agent, the reducing agent preferably being in excess of the stoichiometric equivalent of the oxidizing agent to prevent the release of free oxygen. The closure member 3 rests on a shoulder 5 and the top of the tube is forced over the closure member. A sealing gasket 7 may be interposed between the shoulder 5 and the closure member. In an example a tube 3 in. long, was filled with a composition containing: 26 per cent suplimed zinc, 28 per cent 200- mesh manganese dioxide, 10 per cent 150- mesh electrolytic iron and 36 per cent barium chromate (percentages being by weight), compressed under a pressure of 6,000 lbs. per sq. in. to occupy 2¢ ins. of the chamber length leaving an air-gap of “ in. This charge is said to liberate 8 kilocalories of heat. Fig. 5 shows a block of metal such as aluminium suitable for use as a heating pad and having a bore 9 to accommodate a heating cartridge. A spring-impelled trigger member 10 pivoted at 11 carries a firing pin 12 to actuate the percussion cap 4. Another device for heating water or food comprises a metal block with a bore for the reception of a cartridge and a second bore to receive a vessel holding liquid to be heated. An alternative composition given is zinc dust 33.8 per cent, barium chromate 43.4 per cent and manganese dioxide 22.8 per cent (all parts being by weight). To 35 grams of this composition is added 1 part aluminium powder. On top of this charge is placed 1 gram of a starter charge comprising electrolytic iron and manganese dioxide. Specification 572,573 is referred to.
Patent GB-1081094-A (GB)
Title: Method of obtaining pectolytic enzymes
Inventor: FEDOSEEV VALENTIN FEDOSEEVICH
Filed: 1964-05-01
Abstract: Pectolytic enzymes are obtained by precipitation with a water-miscible alcohol (e.g. ethanol or propanol) from a solution of molasses which has been fermented to give citric acid, e.g. with Aspergillus niger.  Any iron present may be removed by precipitation with potassium ferrocyanide.
Patent GB-497853-A (GB)
Title: Improvements in or relating to the manufacture of aluminium sulphate
IPC: C01F7/748
Filed: 1937-06-30
Abstract: A raw aluminium sulphate solution obtained from clay, bauxite, alunite, &c. has its pH value raised to a value of 0,1 to 0,8 units above the pH value of a chemically pure solution of the same concentration, impurities such as iron and titanium compounds are separated by hydrolysis under heat and removed together with silica, and the pH value then reduced by at least 1 unit, whereafter a crystallized compound containing aluminium sulphate is obtained and separated from the solution.  The mother liquor being free from iron and titanium compounds may be returned to the process and used together with sulphuric acid for attacking more of the mineral.  The pH value of the solution may be increased by adding oxides, hydroxides, silicates, aluminates, basic sulphates, or carbonates of aluminium, calcium, magnesium, sodium, or potassium, and decrease of its pH value be effected by saturating the solution with N2O3, N3O4, SO2, SO3, or HCl, whereby unstable addition compounds of aluminium sulphate with the added gases are obtained.  The addition compounds may be decomposed by water or by heating to give pure aluminium sulphate.  Specification 497,405, as open to inspection under Sect. 91, is referred to.
Patent GB-826156-A (GB)
Title: Gloss meters
Inventor: HOPKINS LEONARD FRANK
IPC: G01N21/57
Filed: 1956-06-13
Abstract: 826,156. Photo-electric gloss meters. BOWATER RESEARCH & DEVELOPMENT CO. Ltd. June 11, 1957 [June 13, 1956], No. 18322/56. Addition to 746,513. Class 40 (3). In a gloss measuring apparatus comprising polarizing and analysing means as claimed in the parent Specification, the alternating output of the photo-cell 6, which changes phase as the analyser 5 is rotated through the balance position, is compared with a reference voltage of the same frequency in a demodulator 9 the output of which consists of a D.C. signal of magnitude and polarity determined by the amplitude and phase of the output of the photo-cell 6, the demodulator output being fed to a modulator 13 whereby it controls the amplitude and phase of a 50 c.p.s. A.C. supply which is applied to the control winding of a reversible A.C. servomotor 10 whose reference winding is fed with a 50 c.p.s. mains supply. The servomotor rotates the analyser 5 in such a manner that it alters the analyser setting until the fluctuation of the beam falling on the photo-cell is substantially eliminated. The output of a tachogenerator 14 coupled to the servomotor 10 is fed back antiphase into the input of the servomotor to inhibit oscillation of the analyser about a balance position.
Patent GB-758222-A (GB)
Title: Improvements in or relating to suspension devices for vehicles
IPC: F16F9/06
Filed: 1954-06-22
Abstract: 758,222. Hydro-pneumatic shock-absorbers. REGIE NATIONALE DES USINES RENAULT. June 22, 1954 [Aug. 24, 1953], No. 18335/54. Class 108 (3). An hydro-pneumatic shock - absorber comprises a piston 10a having an extension 12 provided with a calibrated orifice 15 and channels 14 controlled by a valve 25, for controlling liquid flow between the cylinder proper 1 and the interior of the piston-rod 10, and pneumatic fluid separated from liquid in the rod 10 by a floating piston 18. The valve 25 is in the form of a resilient diaphragm retained by crimping over the member forming the orifice 15. In operation, on compression, the valve 25 remains closed, and restricted flow takes place through the orifice 15. Bottoming is prevented by the action of metering slots 26 on the piston entering a recess 3a in the lower cylinder head. Bottoming on extension is similarly prevented by the action of metering slots 27 in conjunction with a recess 10b in the piston. On extension, the valve 25 opens. Pressure liquid is fed to a gland 17 by passages 16a, 16b, 16c, and 16d. The tube 10 can be inflated through valves 23, 31. Alternatively, the interior of the tube 10 may be connected to an external reservoir of compressed air. The floating piston 18 may be of rubber, neoprene, synthetic resin or wood. The working liquid may be silicone oil. Specification 736,383 is referred to.
Patent GB-767982-A (GB)
Title: Improvements in multiple valve units
IPC: F15B13/08
Filed: 1954-06-23
Abstract: 767,982. Valves. YOUNG, W. June 22, 1955 [June 23, 1954], No. 18364/54. Class 135. In a valve unit made up of a number of manually-operable valves B, Fig. 1, each controlling its own single or double-acting power cylinder, in which the facing ports a in adjacent casings are connected together by a looselymounted tube D, Fig. 3, the ports a are recessed to receive, when the casings are clamped together, a rubber ring E carried on the tube to prevent damage to the casings on assembly. A ring of holes d through each tube in the position of the ring E allows the pressure of the hydraulic fluid to act on the ring to form a seal. Specification 717,677 is referred to.
Patent GB-1384082-A (GB)
Title: Cellulose propionate solution
IPC: C08B3/22
Filed: 1972-04-20
Abstract: 1384082 Cellulose propionate solutions EASTMAN KODAK CO 20 April 1972 [21 April 1971] 18366/72 Addition to 1282480 Heading C3F Cellulose propionate having an acetyl content of from 0 to 4À5% by weight, a hydroxyl content of from 4À4% to 12% by weight, a viscosity of from 0À02 to 20 seconds (as herein defined) and being soluble in ethanol containing from 5 to 10% by weight of water at 77‹ F. is dissolved in an aqueous organic solvent. The organic solvent may be either an alkanol containing from 1 to 4 carbon atoms, ethyl or methyl acetate or a ketone containing from 3 to 6 carbon atoms, providing that it dissolves the propionate in the presence of water.
Patent GB-1325417-A (GB)
Title: Fluid power braking and steering system
IPC: F15B11/16
Filed: 1972-04-20
Abstract: 1325417 Brake &c. hydraulic systems DBA SA 20 April 1972 [7 May 1971] 18412/72 Heading F2F An hydraulic system comprises a pressure fluid source e.g. a pump 2 and a reservoir 6, supplying a pressurized fluid accumulator 28 and an open-centre receiver device 18, such as a servo steering valve, the supply line 14 of the device 18 being provided with a throttle 30 and a control valve 32 in by-pass relationship with the throttle. The valve 32 comprises a valve member 66, which may co-operate with a ball seat 68, actuated by a piston 46 responsive to the fluid pressure in the accumulator and the fluid pressure downstream of the throttle, both pressures acting against resilient means, e.g. a spring 70, to thereby open the valve 32 when the sum of the corresponding pressure forces reaches a predetermined value. As shown, the valve 32 has a stepped bore 44 in which slides a stepped piston defining a chamber 48 connected to the accumulator and a chamber 50 connected downstream of the throttle 30. An inlet 55 of the valve is connected to a point upstream of the throttle and communicates via a passage 58 with the chamber 50. A second throttle 40 of larger effective cross-section than that of the throttle 30 is provided between the chamber 50 and a point downstream of the throttle 30. The accumulator also supplies pressure fluid to a closed-centre device 16 i.e. a brake-assisting servo motor. Upon charging and when the pressure in the accumulator 28 reaches a predetermined level the pressures in the chambers 48, 50 urge the piston 46 to the left as seen in the figure to permit flow through passage 58 to duct 36 and through the throttle 40 which produces a rise in pressure in the chamber 50 whereby the piston is moved further to fully open the passage and the entire delivery of the pump supplies the device 18. When the accumulator is fully charged and the device 18 has still not been actuated operation of the device 16 causes a drop in pressure in the accumulator and therefore in chamber 48 so that the piston moves to the right to close passage 58, the pressure upstream of the throttle 30 increasing so that the accumulator charging cycle is repeated. When the by-pass is operating both devices 16, 18 may be used simultaneously.
Patent GB-225486-A (GB)
Title: Improvements in welded socket joints
IPC: F16L13/04
Filed: 1924-08-01
Abstract: 225,486. Phoenix Akt.-Ges. f³r Bergbau und H³ttenbetrieb Abteilung Hoerder Verein, and Kl÷pper, J. Aug. 1, 1924. Joints formed by welding. - In a welded spigot-andsocket pipe joint, the and of the pipe a, which fits into the socket c of the adjacent pipe, is provided with an outwardly extending flange b adapted, when in position, to be enveloped by the free edge m of the socket, which is turned down over it. The parts are then united externally, or externally and internally by welded seams d, d'. In a modification, Fig. 6, the free edge of the socket f is provided with an inwardly projecting flange f<1>, which is engaged by an outwardly extending flange g<2> on an enlargement g<1> of the adjacent pipe g, the parts being welded internally, as shown.
Patent GB-800055-A (GB)
Title: Thermostatic steam trap
IPC: F16T1/08
Filed: 1956-06-14
Abstract: 800,055. Steam traps. VELAN ENGINEERING CO., Ltd. June 14, 1956 [June 4. 1956], No. 18488/56. Class 64(2) [Also in Group XXIX] A thermostatically controlled steam trap comprises a chamber 16, Fig. 2, with inlets 20, 22 and outlets 36, 38 and a valve assembly comprising a pivoted member 50, a float 70 secured to the member 50 at a point remote from the pivot 53 and a thermally responsive element 80 secured at spaced points to the member 50 and to a valve 90 adapted to engage a seat 34, whereby the element 80 under varying temperature conditions causes movement of the valve 90 towards and away from the seat while the float 70 under accumulation of condensate moves the valve away from the seat regardless of. temperature conditions. The element 80 is connected to the valve 90 in the manner described in Specification 737,936 and has its valve closing movement restricted by an extension 56, Fig. 4, on the member 50 which is also provided with a stop 59 to limit its movement in one direction. When steam enters the chamber 16 through a filter 24 the element 80 closes the valve 90 as shown in Fig. 2. The entry of cool condensate causes the element 80 to open the valve while an accumulation of condensate at steam temperature lifts the float 70 and hence causes the valve to open despite the action of the element 80. The latter may be a single or multisegment type. In a modified construction, it is replaced by a bellows 180, Fig. 7, interposed between one end of the pivoted member 150 and a rectangular frame 184 secured to the valve 193.
Patent GB-1131662-A (GB)
Title: A method and installation for the thermal treatment of steel rails
IPC: C21D9/04
Filed: 1966-04-27
Abstract: 1,131,662. Heat-treating steel rails. LORRAINE-ESCAUT S.A. April 27, 1966 [April 28, 1965; March 11, 1966], No. 18501/66. Headings C7A and C7N. Steel rails leaving the hot rolling mill are immersed in a cooling medium maintained at constant temperature, part of the surface of the rail flange being screened from the action of the coolant so that the cooling rate is equalized over the cross-section and the temperature being such that isothermal transformation to bainite or pearlite occurs. The cooling medium may be a fluidized bed into which the rails are immersed flange uppermost with the flat face of the flange horizontal so that there forms thereon a coating of stagnant bed particles acting as a thermal insulator. Transformation may occur completely in the bed, or may be initiated therein and completed in supplementary apparatus such as a furnace. As illustrated in Fig. 1 rail A on leaving the mill is raised, inverted, and lowered into a fluidized bed in vessel 2; after holding for an appropriate period it is then removed and deposited at H. The bed may be heated, as by resistance elements 6 or other suitable means, or cooled by the passage of coolant through pipes 7, in accordance with the indication of pyrometer 8. In the embodiment of Fig. 3 (not shown) a plurality of rails are traversed through the bed for such a time that transformation is complete, while in a further modification Fig. 4 (not shown) the rail is cooled to transformation temperature in afluidized bed and is then transferred to a furnace for completion of the transformation. Fig. 5 shows a variant in which the fluidized bed is supplied by two separate wind-boxes, the first zone of the bed being cooled and fluidized with cold air while the following zone is fluidized by air heated by burner 18 under the control of pyrometer 19. The rails may contain in percentage by weight C 0À4 - 1 Mn 0À5 - 2À5 Si 0À02 - 1À8 Cr 0 - 1-5 Mo 0 - 0À5 V 0 - 0À4 Nb 0 - 0À25 Fe balance. and may be transformed at 560 -620 C. for 200- 800 secs. to achieve a pearlitic structure or at 380 -460 C. for 300-900 secs. To achieve a bainitic structure.
Patent GB-1236083-A (GB)
Title: Improved roof structure
Inventor: NAISH KENNETH JOHN ANDRE
IPC: E04D13/04
Filed: 1968-04-19
Abstract: 1,236,083. Roof structure. FREDERICK BRABY & CO. Ltd. 18 April, 1969 [19 April, 1968], No. 18526/68. Headings E1A and E1W. The roof, e.g. of a petrol station shelter, comprises corrugated sheeting (e.g. of the type in Specification 1,090,597) which corrugations run normal to the sheet support beams and which sheet -is provided with drain holes at or adjacent the beams. As shown aluminium sheet 13 is fixed to beam 3 by the combination of a nut and bolt and a bridge member 17 seating across the lowermost part of the valley of corrugation and is spaced from the beam by rubber saddles 11, the sheet and saddle being provided with a slot through which the bolt passes and which serves as the drainage hole. The beams and main column 2 are tubular steel, the beam being connected by spigot joint to the column and the water drains through beam 3 and column 2 to drain 27.
Patent GB-1057031-A (GB)
Title: Cutting horizontally moving material
Inventor: OXLEY THOMAS GRAEME
IPC: B22D11/126
Filed: 1963-05-10
Abstract: 1,057,031. Cutting by fusion. DAVY & UNITED ENGINEERING CO. May 11, 1964 [May 10, 1963], No. 18533/63. Heading B3V. Continuously moving material is severed into lengths by cutting means 31 mounted for transverse movement on a carriage 11 movable at the same speed as the material. The latter is preferably an ingot issuing from a continuous casting plant through levelling rolls 39. The carriage is in two interconnected parts 11, 15 moving on rails 14 and driven by a hydraulic ram 35, 37. Rollers 17, 24 on the carriage are driven by individual motors 19, Fig. 2 (not shown), through freewheel devices 20. An auxiliary carriage 25 running on rails 26 and connected to the main carriage 11 by structure 27, nas two transverse slides 28 carrying crank arms 30 connected to burner arms 29A, 29B. The latter carry burners 31 and guards 32A which can be raised or lowered by rotation of the crank arms 30. During cutting the carriage is clamped to the moving ingot by a watercooled jaw 23 in frame 22 which jaw may be controlled manually or automatically by operation of a limit switch. The two burners 31 are then moved transversely in opposite directions to sever the ingot. Rollers 17 are then driven to move the cut off piece 41A, Fig. 7 (not shown), on to a roller table 40. When the carriage moves away from the levelling rolls 39, additional support is provided for the ingot by a roller 42 on an arm 43 mounted on a stationary pivot axis 44. A box 33 is used to catch any waste products and may be emptied by separating the two parts 11, 15 of the carriage.
Patent GB-354007-A (GB)
Title: Improvements relating to the distant control of apparatus driven by electric motors
IPC: H02P5/46
Filed: 1930-06-18
Abstract: 354,007. Variable resistances. RHEINISCHE METALLWAAREN - UND MASCHINENFABRIK, 195, Ulmenstrasse, Derendorf, and SUNDHAUSSEN, H., 9, Rehstrasse, Rath, both in Dusseldorf, Germany. June 18, 1930, No. 18627. Drawings to Specification. [Class 37.] In a distant controlling apparatus for guns &c. connected on the Wheatstone bridge system, the bridge resistances consist of several continuous wire resistances connected in parallel.
Patent GB-251813-A (GB)
Title: Improvements in or relating to gin rollers
IPC: D01B1/06
Filed: 1925-01-05
Abstract: 251,813. Russell, C. W. Jan. 5, 1925. Gins.-Ginning-rollers for a Macarthy gin are formed by winding spirally on a wooden roller strips of material formed by embedding a woven band of cotton in a mixture of coir fibre and paper pulp. The woven band is covered with the mixture and passed through calender rollers.