baber/WOPTO huggingface dataset:
Patent GB-1099931-A (GB)
Title: Means for controlling the flow of fluid
Inventor: FRENCH PETER RAYMOND JOSEPH
IPC: G21C15/02
Filed: 1964-05-22
Abstract: 1,099,931. Cooling reactors. NUCLEAR POWER PLANT CO. Ltd., and A.E.I.- JOHN THOMPSON NUCLEAR ENERGY CO. Ltd., [trading as NUCLEAR POWER GROUP]. Feb. 11, 1965 [May 22, 1964], No. 21194/64. Addition to 1,092,534. Heading G6C. [Also in Division G3] The thrust due to fluid pressure on the convergent portion 1 of the adjustable nozzle, disclosed in Specification 1,092,534, in a duct 2 of a fuel channel in a nuclear reactor, is reduced by the interconnection of the upstream and downstream sides of the member by a passage 3 of small cross-section relative to that of the duct. In Fig. 1 a weight 7 is suspended on the member 1 to balance the forces acting thereon. A further embodiment discloses a passage passing through the body of the nozzle.
Patent GB-1486461-A (GB)
Title: Ventilator incorporating centrifugal fan
IPC: F04D29/66
Filed: 1975-05-13
Abstract: 1486461 Silencing centrifugal fans GREENWOOD AIRVAC VENTILATION Ltd 13 May 1975 [14 May 1974] 21404/74 Headings FIB and F1C [Also in Division F4] A ventilator comprises a casing 1 having therein a block 12 of sound-insulating material, e.g. polyurethane foam, in which is formed a small chamber 13, a channel 15 and a second chamber 14 forming part of an air passage through which air is passed by the fan impeller, the motor fan unit 18 being mounted on a plate 17, the plate together with the motor fan unit being removable bodily from the casing without disturbing the block 12. The casing 1 is attached to a wall via flanges 3, 4, with an inlet duct 7 extending through the wall, and is sealed to the wall by a self-adhesive gasket strip 11. From the chamber 14, the air passes via an aperture 20 in the plate 17 to a discharge grill 22 in a removable front cover 10. The plate 17 is provided with sound-absorbing members 19 on its front face and 24, 28 on flanges 23, 27. A sound-absorbing member 26 is carried by the cover 10, and a soundabsorbing member 25 located under the flange 23 is retained in position by the cover. The fan motor is controlled by a manually operable rheostat 16 and, it may be, a thermostat.
Patent GB-666569-A (GB)
Title: Improvements in or relating to roll winding apparatus
IPC: B65H59/38
Filed: 1948-08-13
Abstract: 666,569. Control of D.C. motors. IGRANIC ELECTRIC CO., Ltd. Aug. 13, 1948. [Aug. 23, 1947] No. 21419/48. Class 38 (iii). [Also in Group XXXV] In a roll winding system, the power supplied to the winding motor is maintained constant as the roll diameter rises. As shown, the strip 1 is wound on reel 2 by series motor M which is supplied with power, measured by wattmeter 8, by the generator A<SP>1</SP> the excitation field F<SP>1</SP> of which is reduced upon operation of 8 at a predetermined maximum deflection. The resistor r in series with F<SP>1</SP> is adjusted by the motor PM having a field f<SP>1</SP> excited by the closure of relay 20 by the wattmeter through contacts 21. The system is started by push button 25 which closes both the main and holding contacts 5 and 32 respectively and energizes the relay. 27 after a delay period determined by condenser 33.
Patent GB-299549-A (GB)
Title: Improvements in or relating to carburetting devices for internal combustion engines
IPC: F02M17/14
Filed: 1927-08-15
Abstract: 299,549. Grafton, W. F. Aug. 15, 1927. Spray carburettors. - In carburettors having an annular air supply passage formed by a suctionactuated charge valve moving within a choke tube and carrying a fuel control valve, such as is described in Specification 205,962, the movements of the charge valve are controlled by a dashpot at the upper end of its stem and within the carburettor casing. The charge valve, which moves in an adjustable choke tube 6, consists of two conical discs 7, 7a forced together by nut 8<d> and shoulder 8<c> and hav. ing fuel outlet apertures 7b at their meeting faces. The fuel nozzle 9 is screwed into a bridge piece 2<b> and is controlled bv a fuel valve 10 the head 10<a> of which is mounted freely in the hollow stem 8<a> and is adapted to be lifted by an internal flange 8<f> thereon. The head is also accommodated within a recess in a spring-loaded plug 11. Air is admitted to the interior of the charge valve through passages between the nozzle 9 and the hollow stem 8. The upper end of the stem carries a dashpot piston 12 of smaller diameter than the charge valve and working within a cylinder 13<a> having a vent 13b to atmosphere. A throttle valve 5 actuated through an arm 5<b> controls the carburettor outlet. To prevent lag in the fuel feed, the lower disc 7<a> of the charge valve is slightly larger than the upper.
Patent GB-1473097-A (GB)
IPC: G05D23/24
Filed: 1973-05-04
Abstract: 1473097 Axial-flow fans SIMMS GROUP RESEARCH & DEVELOPMENT Ltd 4 April 1974 [4 May 1973] 21448/73 Heading F1C [Also in Divisions G3 and H2] In a drive system for a I.C. engine cooling fan 11, comprising an electric motor 10 and a generator drivable by the engine to generate electrical power for the motor, means 15 are provided for controlling the excitation of a field winding 14 of the generator and thus the speed of the fan. The generator comprises a three-phase alternator 13 connected to the motor 10 via rectifier unit 12. The means 15 is responsive to engine coolant temperature and includes a thermally-actuated switch 36 in a potentiometer line connected across an accumulator 18. The switch is closed when the engine is cold so that a Zener diode 30 conducts and renders transistor 26 conductive to switch off transistor 22 and thus transistor 19 in series with the field winding 14. When the engine temperature reaches a certain value the switch 36 opens, whereby diode 30 and transistor 26 become non- conductive and thus allow the transistors 22, 19 to conduct to provide a field current through the winding 14 and operate the motor 10. As the alternator output increases a voltage is reached at which the diode 30 once more becomes conductive thereby switching off the transistors 22, 19 and current flow to the winding 14. The process is then repeated. The fan speed is settable by resistor 35. Fall in engine temperature closes the switch 36 and thus prevents fan operation until the engine temperature increases again. The resistor 34 may be replaced by a thermistor  responsive to engine temperature so that when the switch 36 is open the fan speed is increased with increases in engine temperature. When a thermistor is used, the switch 36 may be omitted and an isolating switch provided between line 16 and accumulator 18.
Patent GB-203148-A (GB)
Title: Improvements relating to variable speed gear of the expandingpulley type
IPC: F16H9/14
Filed: 1922-08-05
Abstract: 203,148. Coates, D. A. Aug. 5, 1922. Expanding pulley gearing comprises a double intermediate expanding pulley c turning loosely upon a spindle d carried by arms e turning about a fixed or adjustable pivot f. This pulley comprises a pair of inner flanges upon a sleeve g which slides and turns relatively to an inner sleeve to which the outer flanges are secured.
Patent GB-962075-A (GB)
Title: Improvements in seats
IPC: B60N2/04
Filed: 1962-06-04
Abstract: 962,075. Adjustable seats. HUMBER Ltd., R. N. NEWMAN, and N. HENDERSON. June 4, 1963 [June 4, 1962], No. 21523/62. Heading A4J. In an adjustable vehicle seat having a rigid seat frame 10 with a seat back 11 directly or indirectly fixed thereto, a seat platform 12 attached to the frame 10 for pivotal movement about a transverse horizontal axis 15 positioned at or near the front or rear of the platform 12, and means for holding the platform 12 in various positions of angular adjustment around the pivot axis 15; the holding means comprises a lever 19 fulcrumed at 17 to the frame 10 and engaging the underside of the platform 12 remote from the fulcrum, and means such as a screwed rod 18 operating on the lever at another position, remote from the fulcrum 17, to retain the lever 19 in various positions of rotation about the fulcrum. The lever 19 supports the platform through a resilient buffer 26, which may be secured to the platform 12 or the lever 19. The lever is adjusted by rotating a screw-threaded rod 18, which is attached to the lever 19 and passes through a threaded sleeve 20 in a bracket 23. The platform may comprise a resilient diaphragm supported within a sub-frame with the rear arm of the lever 19 branched to form two arms, each supporting the subframe through buffers 26. The seat may be attached to the back 11 by a spring 28 to assist upward movement of the seat. The seat may be provided with means to raise and lower the pivot axis 15 and/or the fulcrum 17. Also the frame 10 may be secured on runners for longitudinal adjustment.
Patent GB-355902-A (GB)
Title: Improvements in and relating to the manufacture of concrete
IPC: C04B28/02
Filed: 1930-07-16
Abstract: To increase the resistance of cement to water, a proportion exceeding 3 per cent of cement clinker of ,25 to 2 mm. in diameter is mixed with the finely ground cement.  The clinker may be of the same or of a different kind of cement from that comprising the finely ground constituent and the final product may be obtained either by mixing the finely and roughly ground constituents or by grinding so as to obtain a suitable product. The cement, the clinker, or both may be treated with solutions of compounds of alkalies and alkaline-earth metals, for example, sodium or ammonium phosphate, compounds or solutions of fluorine compounds or solutions of oxalic acid or its salts or are subjected to the action of the vapours of the fluorine-containing acids and then dried, more than one of the above substances being used if desired.  Fillers such as sand, sandy gravel, ground building sand, powdered stone, pumice stone, tuff, slag, burnt or unburnt marl, bauxite, loam, gravel, stone, trass or kieselguhr, brick and chamotte may be added and these may be treated with one or more of the substances mentioned above if desired, the treatment taking the place of the treatment of the rough-grained clinker.  Rapid or too rapid setting is prevented by precipitating, on the clinker or other ingredients, organic or inorganic material which may be capable of swelling, such as colloidal silicic acid (silica gel), colloidal alumina, colloidal silicic acid compounds, for example, calcium silicate, gelatine, glue, albumen, decomposition products of proteins (protalbin), casein, seaweed-glue, tragacanth, agar-agar, &c.  On the other hand the setting may be accelerated by treating with solutions of metallic chlorides, alkali, and alkaline-earth lyes, silicic acid and/or aluminium compounds or permanganate.  Instead of treating the ingredients with solutions of the substances mentioned above, some of them may be mixed in the dry state before, during or after burning.
Patent GB-534852-A (GB)
Title: Improvements in rendering iron and steel of improved resistance to corrosion
IPC: C23C22/73
Filed: 1939-07-25
Abstract: 534,852. Coating iron and steel. PYRENE CO., Ltd. (Parker-Rust Proof Co.). July 25, 1939, Nos. 21643/39 and 12070/40. [Class 82 (ii)] To improve the resistance of iron and steel to corrosion by the formation of a chromate coating thereon, a bonding film forming part, but only a minute part, of the final coating is first formed on the iron and then a main coating solution, including radicals containing hexavalent chromium is applied over the bonding film and a film of this solution dried, e.g. by heating, on the surface. The main coating solution may also contain orthophosphate radicals. The bonding film may be formed by the chemical surface reaction of a solution with the iron, e.g. by a solution containing arsenic, bismuth, antimony, molybdenum, lead, tin, mercury, cobalt, nickel, cadmium, silver, copper, titanium, thallium, tungsten, vanadium, manganese, strontium, barium or calcium and the solution containing them is prepared by dissolving a nitrate of the metal in water or dissolving an oxide of the metal in acid such as phosphoric, hydrochloric or sulphuric acid, so that some of the acid is left in the free state. An oxidizing agent such as nitric acid or perchlorates, permanganates, sulphates, persulphates, iodates, periodates, bromates, peroxides, quinone and ceric salts or a mixture of such agents may be added. The second solution may consist of any solution containing hexavalent chromium, e.g. that described in Specification 447,704 and may contain a wetting agent such as sodium lauryl sulphate and sulphonated higher alcohols. In an example the surface of the metal is cleaned and then treated for 30 seconds with a heated solution containing 2,000 c.c. of water, 5 grams of arsenic pentoxide, 50 grams of 75 per cent. orthophosphoric acid and 5 grams sodium chlorate to form the bonding film. After treating with the main coating solution the coated article is then baked at 500‹F. The bonding film may be produced by etching with acids or by applying a very thin film of metal electrolytically. Specifications 362,956 and 530,006 also are referred to.
Patent GB-588670-A (GB)
Title: Electromagnetic clutch
IPC: F16D27/12
Filed: 1944-11-06
Abstract: 588,670. Electromagnetic friction-clutches. ELECTRICAL ENGINEERING & MANUFACTURING CORPORATION. Nov. 6, 1944, No. 21699. Convention date, Nov. 6, 1943. [Class 80 (ii)] [Also in Group XXXVII] To keep the path of the clutch-engaging flux produced by a stationary magnet-winding 40 away from the friction-faces 56, the flux is concentrated in closely adjacent rotating bosses 30, 34 carrying the driving and driven discs 32, 36, the bosses being made of substantial thickness whilst the discs themselves are as thin as possible. The flux path is through the bosses, which are separated by an air-gap, a stationary magnet-core 44 surrounding the boss 30, an external fixed cylindrical shell 20, and a fixed brake-disc 50 surrounding the boss 34. The magnet-core 44 and shell 50 are tapered or stepped down in thickness radially outwards to maintain substantially constant flux density. The non-magnetic friction-facings 56 are attached or deposited as described in Specification 588,669. A spring 58 normally presses the driven disc 36 into braking-contact with the fixed disc 50. Openings 26 in the shell 20 permit passage of wiring and cooling air to a driving electric motor. The Specification as open to inspection under Sect. 91 describes also a clutch-energizing circuit, Fig. 2, (Cancelled), interconnected with the motor circuit so as to energize the clutch simultaneously with or independently of the motor 70. Both the motor-field and clutch have series and shunt windings 74, 76 and 78, 80 respectively, so that the clutch-energizing force varies with motor-torque. Either the series or shunt clutchwinding may be omitted; the series winding may be relatively weak to allow slip on overload; or relatively strong for high starting torque, This subject-matter does not appear in the Specification as accepted.
Patent GB-1438079-A (GB)
IPC: C07F9/40
Filed: 1974-05-16
Abstract: 1438079 Organophosphorus sequestrants MONSANTO CO 16 May 1974 [17 May 1973] 21710/74 Heading C1C [Also in Divisions C2 and D1] Metal ions in aqueous systems are sequestered by adding thereto a compound of formula I where R 1 , R 2  and R 5  are selected from H, metal ions, ammonium ions and substituted ammonium ions having up to 18 C atoms selected from alkylammonium, hydroxyalkylammonium and alkylenebis(ammonium) ions; Z is optionally substituted alkyl or alkenyl; and Q is a divalent, optionally substituted hydrocarbon radical having at least 3 C atoms. Specified metal ions are calcium, iron, copper and cobalt and the aqueous system may comprise cooling tower water.
Patent GB-1081341-A (GB)
Title: Apparatus for longitudinal stabilization of rotor craft
IPC: B64C27/30
Filed: 1965-05-21
Abstract: 1,081,341. Controlling helicopter rotors. BOLKOW G.m.b.H. May 21, 1965 [May 22, 1964], No. 21713/65. Headings B7G and B7W. A helicopter rotor head 1 is mounted for universal pivoting on the rotor shaft 2, and is connected to the swashplate 11 in such a way that tilting of the rotor head in one direction causes the swashplate to tilt in the ooposite direction, thus varying the blade pitch to reduce the tilting. The connection between the rotor head and swashplate comprises a ring 5, in which the head rotates, connected by rods 6, 10 and a centre-pivoted lever 8 to the swashplate. A resilient link 12 in the rod 6, and an hydraulic damper 17 connected to the rod 6 prevent rapid variations in rotor head inclination being transmitted to the swashplate. The centre pivot of the lever 8 is movable manually, being connected to a cyclic pitch control stick 23.
Patent GB-995834-A (GB)
Title: Machine for wrapping and packaging articles
IPC: B65B35/44
Filed: 1964-05-26
Abstract: 995,834. Packaging machines; endless conveyers. E. FABBRI. May 26, 1964 [Jan. 9, 1964], No. 21766/64. Headings B8A and B8C. Apparatus for packaging articles such as fruit between two thermoplastic webs heat sealed and heat shrunk about them, comprises a conveyer having trough-like pockets, the depth of which is decreased progressively towards the exit end of the machine. Fruit F is advanced by a conveyer A to fall on to a web S1 covering the pockets and depress the web into them. A covering web S2 is sealed to the lower web and the packages severed, in one embodiment, by a reciprocating frame L, L<SP>1</SP>, the packages then passing through a heat shrinking tunnel T. A conveyer P receives the final product. In other arrangements, crank operated or rotary sealers may join the webs (Figs. 8, 9, not shown). The decrease of pocket depth may be achieved by forming their sides of interdigitating bars extending from rods joining conveyer chains. Extensions of the rods are cranked and carry rollers running on fixed tracks which cause the rods to rotate so as progressively to swing the bars towards the horizontal as in Fig. 1. In another arrangement the angle of the bars to the direction of travel of the pockets remains constant but the rods are caused to approach each other, so raising the point of intersection and reducing the pocket depth (Figs. 6, 7, not shown). In a further form, Fig. 4, the pockets are in the form of grooves extending in the direction of conveyer travel and conveyer chains carrying interdigitating bars 4, 5 approach each other towards the discharge end to raise the point of intersection. Cutters slit the webs longitudinally to produce packages as in Fig. 11.
Patent GB-687599-A (GB)
Title: A process for the production of phosphate layers on metallic surfaces
IPC: C23C22/08
Filed: 1950-09-04
Abstract: A paste comprising an aqueous phosphating solution in admixture with powdered mica as a carrier, is used for phosphating metal surfaces. The phosphating solution is preferably a solution of phosphoric acid but may also contain hydrochloric or sulphuric acids to assist in rust removal.
Patent GB-570387-A (GB)
Title: Improvements relating to water level indicators for pressure valves
IPC: F22B37/78
Filed: 1943-12-31
Abstract: 570,387. Gauge glasses. HOPKINSONS, Ltd., BROWN, R. L., SEWELL, G., and FLETCHER, F. Dec. 31,1943,No. 21911. [Class 123 (i)] A water-level gauge comprises flat glass strips a set in cement b, which may be composed of mica, silica, and a phenol formaldehyde resin, in recesses in the cover-plates c so that the glass surface is flush with the cover-plate. This prevents any pressure-flow of the gaskets e into the cover-plate around the glass.
Patent GB-251929-A (GB)
Title: Improvements in the manufacture of alloys containing tungsten carbide
IPC: C22C1/05
Filed: 1925-09-02
Abstract: 251,929. General Electric Co., Ltd., (Assignees of Patent Treuhand Ges. f³r Elektrische Gl³hlampen). May 7, 1925, [Convention date]. Addition to 213,524. Metals, powdered, obtaining coherent masses from; alloys.- A sintered hard alloy for tools consists of tungsten carbide containing preferably about 6.12 per cent of carbon, and 10-20 per cent of a metal of lower melting point such as iron, nickel or cobalt, the carbonization, which is preferably effected by means of a carboncontaining gas, being carried out at such a temperature that the particles adhere loosely. The alloy may be made by heating tungsten powder at 1050‹ C. in a stream of coal gas, or of hydrogen which has been passed through benzol, so as to form tungsten carbide, which is subsequently mixed with, for example, cobalt powder, pressed, and sintered.
Patent GB-219881-A (GB)
Abstract: 219,881. Morgan, H. R. Jan. 22, 1924. Line - indicators.- Devices to facilitate reading, of the kind comprising a thin sheet a of cardboard, metal, or other material provided with a narrow slot b to expose only one line at a time, are provided with means for holding the device by the hand so that it can be readily moved as the reading progresses. The holding means may comprise a flange c at the bottom of the sheet a, and may be hinged to the sheet a at d and folded flat against the sheet when out of use. The sheet may be coloured restfully for the eyes, and the edges of the slot b may be bevelled.
Patent GB-644703-A (GB)
Title: Improvements in or relating to electric control system
IPC: G05D3/12
Filed: 1947-08-08
Abstract: 644,703. Electric control systems. ASKANIA REGULATOR CO. Aug. 8, 1947, No. 21997. Convention date; Feb. 17, 1943. [Class 40 (i)] [Also in Group XIX] An automatically balanced Wheatstone bridge has the electrical condition of one arm varied by one control member, a second control member simultaneously varies the electrical condition of two arms in separate paths of the bridge and the balancing means adjusts a bridge arm on the 'opposite side of the bridge diagonal from the first mentioned arm. The bridge arms may comprise variable impedances or include variable E.M.F. sources therein such as thermocouples, tachometer generators or photo-cells. The bridge may be used to indicate or regulate the value of a physical variable, e.g. displacement. speed, temperature, liquid-conductivity, light intensity or for the evaluation of functions such as a.b, ab/c, #ab. As shown in Fig. 1, series, resistors A, B and C, D, E, F, form two paths, connected across the D.C. or A.C. supply 1, 2 and bridged at Ea, Ba by the usual control apparatus R for operating the balancing motor M which adjusts the resistor F. One control member 6 varies the resistor C and a further control member 7 simultaneously varies resistors A, B, D, E in such a manner that the total resistance AB, DE in the respective paths is not altered. For one fixed position of the control member 7 movement of the control member 6 will cause equal movement of the motor-driven controlled member 3 as indicated at 3a. Adjustment of the control member 7 then serves to vary the ratio of the corresponding movements of the members 3, 6, this ratio being indicated at 8. The resistances AB and DE may be combined, Fig. 2 (not shown), and the members 3, 6 may rotate over their respective resistances F, C. Separate control members may be provided for varying the respective resistor pairs DA and EB, Fig. 3 (not shown), for evaluating the expression a.b/c. This arrangement may be modified, Fig. 4 (not shown), by coupling the c control member 6 to vary the resistors EB, for evaluating the expression a2/b, or, the controlled member 3, Fig. 5 (not shown), may be coupled to vary the resistors DA, for evaluating #a.b. Fig. 6 shows a bridge where the resistor C, Fig. 1, may be replaced by a variable E.M.F. derived from a tachometer generator PG, a thermo-couple T or a cell L for measuring liquid conductivity. The controlled member 3 may also be moved in accordance with the sum or difference of two or more factors by controlling a corresponding number of variable resistance elements in one arm of the bridge. Specification 265,917, [Class 40 (i)], is referred to.