baber/WOPTO huggingface dataset:
Patent GB-595559-A (GB)
Title: Improvements in or relating to charge forming devices for internal combustion engines
IPC: F02D9/02
Filed: 1944-12-08
Abstract: 595,559. Electric correspondence control. SCHIPPER, P. W. Dec. 8, 1944, No. 24630. Convention date, Nov. 17, 1943. [Class 40 (i)] [Also in Groups XXVII and XXXV] In an internal-corn bustion engine, the fuel, air ratio is kept constant or varies with engine output as desired under the control of an electrid system which operates in accordance with the rate of flow of fuel and air and takes account of temperature. As shown, the fuel valve 30 is controlled in accordance with (1) the rate of fuel flow as determined by the pressure difference in chambers 28, 36 ; (2) the rate of air flow, as determined by the pressure difference between the inlet and the throat of a venturi 10; (3) the absolute pressure at the venturi throat (or elsewhere in the air supply system) ; (4) the temperature of the inflowing air. The measurements of these quantities are expressed as inductance values by devices P1 ... P3 and CT respectively connected as shown in a bridge circuit supplied with pulsating current through a half wave rectifier CT and having amplifiers feeding the open and shut coils 120, 122 of the fuel valve connected in series with oppositely directed rectifiers across the other diagonal. A manual adjustment is provided in the form of a variable shunt to the element P2. In a modification, the measuring devices vary resistance instead of inductance and the bridge is fed with steady current. In both cases, the law connecting inductance or resistance and movement of the pressure-responsive elements is non-linear and may be such as to provide a richer mixture at high outputs and to introduce other corrections.
Patent GB-1135093-A (GB)
Title: Nitroazoline compounds and their preparation
IPC: C07D233/20
Filed: 1966-06-02
Abstract: 1,135,093. Nitro-azolines. COMMERCIAL SOLVENTS CORP. 2 June, 1966 [20 Sept., 1965], No. 24642/66. Heading C2C. [Also in Division C3] The invention comprises oxazolines and imidazolines of the formula wherein X is -O- or Y-N-, where Y is hydrogen or a C 1-5  alkyl, C 1-3  hydroxyalkyl or a phenyl or benzyl radical; R 1  is hydrogen or an alkyl, alkenyl, aryl or aralkyl group containing 1-20 carbon atoms; R 2  and R 3  are the same or different and represent hydrogen or a C 1-3  alkyl or hydroxy methyl group or an acyloxymethyl -CH 2 O.CO.CH 2 R 1  with the proviso that when X is Y-N-, R 2  and R 3  are hydrogen or C 1-3  alkyl groups. The compounds can be prepared by reacting a 2-ethenyl-azoline of the formula with an approximately molar equivalent of 2- nitropropane. in the presence of 0À5-5À0% by wt. of azoline of a condensation catalyst by heating the mixture at reflux until the pot temperature is 150 C. The compounds are also made by heating 1 mol. of an azoline of the Formula (III) with 1 mol. of formaldehyde, or a compound yielding formaldehyde under the reaction conditions, to form the 2-ethenyl-azoline of the above formula, and subsequently adding 1 mol. of 2-nitropropane and 0À5-5À0% by wt. of azoline, of a condensation catalyst and a water entraining agent, and heating the resulting mixture to 150 C.; if desired, the nitroalkane can be added with the formaldehyde. A third method of preparation comprises heating a mixture of 1 mol. of an azoline of the above 1 mol. of 2-nitro-2-methyl- 1 -propanol and 0À5- 5À0% by wt. of azoline of a condensation catalyst to 100-200 C. while removing the water of reaction with a water-entraining agent. Preferred condensation catalysts are iodine, p-xylenesulphonic acid, zinc chloride and sodium hydrogen sulphate. Examples relate to the preparation of oxazolines and imidazolines. The novel compounds are used as plasticizers for nitrocellulose (see Division C3).
Patent GB-426117-A (GB)
Title: Key lever mounting for type lever writing machines
IPC: B41J5/14
Filed: 1934-08-28
Abstract: 426,117. Typewriters. AKT.-GES. VORM. SEIDEL & NAUMANN, 19, Hamburger Strasse, Dresden, Germany. Aug. 28, 1934, No. 24725. Convention date, Aug. 29, 1933. [Class 100 (iv)] Type - lever machines.-In machines having an inclined segment 7, Figs. 1 and 2, for the type-levers 10, individual pivot-posts 3 for the key-levers 6 are arranged in rows a.. d which receive the pivots of the front.. rear banks of key-levers respectively, the pivotposts increasing in height from the front to the rear row, and the pivot-posts in each row increasing in height from the middle to the ends of the row. The key-levers are preferably geared to the type-levers, and have pivots 5 engaging tapered slots 4 in the pivot-posts. The pivot-posts and a base 2 therefor may be formed integrally by diecasting, or from pressed material. Accidental detachment of the key-levers is prevented by means of upper and lower combs 13, 14, the teeth of each comb being opposite the spaces in the other comb.
Patent GB-727722-A (GB)
Title: Improvements in and relating to electric flashing devices
IPC: H05B41/18
Filed: 1951-10-23
Abstract: 727,722. Supply systems for space discharge apparatus. LONDEX, Ltd., and BESSON, A. P. Oct. 21, 1952 [Oct. 23, 1951], No. 24738/51. Class 38 (4). [Also in Groups XXXVII and XL (a)] A flashing signal device comprises an electric discharge lamp 2 having two electrodes 5, 6 of which one 5 when acting as cathode strikes a discharge at a voltage substantially lower than the voltage required to strike a discharge when the other electrode 6 acts as cathode, and a step-up transformer 10 having a primary winding 9 connected to a D.C. low-volt battery source 8 through two contacts 13, 16 of which one, 16, is mounted on a fly-wheel 17 arranged to be rotated against a spring bias 18 to break contact after the other 13 has been attracted through the armature 14 by the core 15 of the transformer at the closure of the contacts caused by the spring bias, the secondary winding 11 of the transformer being so connected to the electrodes 5 and 6 that the surge voltage due to breaking of the contacts 13, 16 is applied when the electrode 15 acts as cathode, and the surge voltage at contact-make is applied when the second electrode 6 requiring a striking voltage higher than this surge voltage acts as cathode. The surge voltage at contact-make is about 1000 for about 1/ 10  second and at contactbreak is about 10,000 for about <SP>1</SP>/ 100  second. A safety spark gap 12 is arranged in parallel with the lamp. The electrode 5 has a larger area than the electrode 6 and is sensitized by a coating of magnesium, aluminium and barium to reduce the striking voltage. The envelope of the lamp 2 includes a coiled tube portion 3, the diameter of the turns being greatest near the middle of the portion and decreasing towards the ends. The lamp can be filled with neon or argon-mercury and coated with a fluorescent powder.
Patent GB-792600-A (GB)
Title: Improvements in locks or latches
IPC: E05B65/44
Filed: 1955-08-30
Abstract: 792,600. Lock and latch fastenings. ASH, J., ROGERS, A., and ROGERS, A. L. Aug. 30, 1955, No. 24800/55. Class 44 A lock or latch having a separate plate or member 3 arranged in its case 4 has a headed key pin, pivot pin or stump 1 mounted by engaging the pin or stump through a hole in the plate or member into a position with the head 1a bearing on the plate or member and welded to the plate or member. The plate or member 3 is held in position in the case by means of lugs 5 bent up and co-acting with a cover plate 6. Alternatively the lugs may be bent inwardly from the cover plate. Indentations may be formed in the plate or member 3 by which it is distanced from the bottom of the case. The head is positioned between the plate or member 3 and the bottom of the case and in an alternative construction the head may be formed by flattening an extension of the pin or stump and bending it over. In this construction the end of the head may be upturned and engage a slot in the plate or member 3. Specification 744,680 is referred to.
Patent GB-248082-A (GB)
Abstract: 248,082. Clause, F. H. Nov. 28, 1924. Washing - apparatus with screens. - Larger grains are separated from smaller grains of powders by passing the powder through a sieve immersed in a comparatively large tank filled with liquid, and rotating the liquid within the sieve. The apparatus may comprise a cylindrical sieve 2 mounted within a tank 1, and paddles 4 for rotating the contents of the sieve 2. The paddles and the walls of the sieve 2 are preferably close together and the distance between the walls of the tank 1 and the walls of the sieve 2 should be greater than half the diameter of the sieve. Specification 15514/13, [Class 117, Sifting &c.], is referred. to.
Patent GB-426598-A (GB)
Title: Improved spring mechanism for electric switches
IPC: H01H23/20
Filed: 1934-08-28
Abstract: 426,598. Tumbler switches. COOK, F. L., 42, Mollison Street, Abbotsford, Victoria, Australia. Aug. 28, 1934, No. 24815. Addition to 425,799 and 426,597. [Class 38 (v)] A tumbler switch having a spring mechanism of the kind described in the parent Specifications, comprises a dolly 1 pivoted by means of trunnions 4 on its depending legs 2 on which are fulcrumed the legs of a U-shaped contact bridger 9. A U-shaped spring 6 with divergent limbs is fastened by a ring 7 to the rocker 9 and its limbs pass through an aperture in the bridge 5. When the dolly is moved over, the bridger 9 is forced downwards and the spring 6 has its arms flexed towards one another by reaction with the aperture in the bridge, so that when the fulcrum of the bridger crosses the line of the spring the bridger is snapped over. In a modification, Fig. 6, the contact bridger 9 and the dolly 1 have a common pivot 12, and the arms of the spring 6 are flexed by an aperture 8 in an inner part 11 of the dolly.
Patent GB-296353-A (GB)
Title: Improvements in or relating to refrigerating machines for domestic and like refrigerators
IPC: F25D23/00
Filed: 1928-08-29
Abstract: 296,353. Conrady, P. Aug. 29, 1927, [Convention date]. No Patent granted (Sealing fee not paid). Refrigerating, compression machines for; refrigerators, domestic and like.-The condenser coils of a machine fitted to a domestic refrigerator are metallically connected with outer metal walls spaced from the walls of the cabinet, so that the cooling is effected by natural flow of cooling-air over the coil and by radiation from the outer walls. The evaporator coils are embedded in the wall insulation and metallically connected with the inside lining. The gas is delivered from the compression unit f, Figs. 1, 4, through a pipe g and manifolds h to inverted U-shaped condenser pipes i, Fig. 6, attached to the outer metal plates. Condensate collects in manifolds k and is fed to distributor pipes d connected with the evaporator pipes a. Apertures m, n are provided in the outer metal plates to enable cooling-air to flow upwards inside them, and the plates are preferably painted on the outside with a thick layer of white enamel. 'The evaporator pipes a lead into a receiver b at the top, from which liquid refrigerant flows back to the pipes d while the gas is led through a pipe e to the compressor suction. In the case of low pressure refrigerants such as methylene chloride and ethyl chloride the condenser may be formed of sheet metal channels as shown in section in Fig. 8.
Patent GB-608940-A (GB)
Title: Improvements in or relating to resin products and preparations thereof
IPC: C08G8/24
Filed: 1944-12-13
Abstract: A water-soluble resin is made by reacting one mol. of phenol with 1.3-2.5 mols. of formaldehyde at a pH of 7.5-8.5 in presence of a nonvolatile alkali catalyst until the reaction product contains less than 2 per cent free formaldehyde and tolerates the addition of from 0.1 to 5 volumes of water without causing the resulting solution to become cloudy at 70 DEG  F., and reacting the resulting product of said first reaction with 10-150 parts by weight of an unsubstituted mononuclear dihydric phenol for each 100 parts phenol until the condensation product has a viscosity in aqueous media of A to G on the Gardner scale.  The product may be vacuum distilled until it has a viscosity of 120-135 revolutions per minute at 70 DEG  F. in a Stormer viscometer using a 500-gram weight.  Further alkali (which may be volatile) may be added with the dihydric phenol according to the pH required in the final product.  A part of the dihydric phenol, up to 10 per cent by weight of the phenol, may be added to the phenol-formaldehyde mixture before the preliminary condensation. The percentage of free formaldehyde at the end of the preliminary condensation is preferably less than 0.75 per cent, and the preferred proportion of formaldehyde used is 1.5-2.0 mols. per mol. of phenol. Cresols or xylenols may replace up to 10 per cent of the phenol. Alkaline catalysts specified are caustic soda and potash, sodium carbonate and trisodium phosphate.  The amount of resorcinol added is preferably 75-150 parts per 100 parts phenol. The products may be used as glues or casting resins.  Examples described the mixing and refluxing of phenol, 37 per cent formaldehyde solution, and caustic soda solution, followed by the addition of resorcinol and more caustic soda solution and heating to 80-90 DEG  C., and vacuum distillation.  Examples also describe the use of the products as casting resins, using hypophosphorous acid as catalyst, and acids specified as suitable for casting are formic, acetic, lactic, monochloracetic and monochlorpropionic.
Patent GB-1478194-A (GB)
Title: Fluidzed bed coating apparatus and process
IPC: B65G47/90
Filed: 1974-06-05
Abstract: 1478194 Conveying workpieces through fluidized bed DART INDUSTRIES Inc 5 June 1974 [28 June 1973] 25021/74 Heading B2L  A clamping mechanism for immersing a heated object, e.g. a bottle 128, into a fluidized bed 138, and adapted to grasp such object in response to a predetermined signal comprises an enclosure (not shown) having a bottom wall with an opening therein, actuator means and a movable linkage both mounted inside said enclosure, said actuator being rigidly fixed thereto, and split clamp jaw members 118, 120, connected to said linkage for movement toward and away from one another, the lower portion of said members extending through said opening, said members defining a recess 126 for engagement with one end of said object and having a means 132 for conveying a fluid medium to said recess whereby said recess can be positively pressurised during immersion of said object. Horizontally extending shields 138 may cover said opening in said bottom wall when the jaw halves are together; the fluid, e.g. air, passing through tubes 132 serves to prevent solid from the fluidized bed from entering the bottle 128 or fouling the clamping means. Fig. 1 (not shown) illustrates a plant wherein bottles are uncased, preheated sprayed with primer, preheated for coating, carried by a conveyor to a location where they are aligned, grasped by clamps as above described, immersed in a fluid bed of polymer to give them a shatter-resistant coating, retrieved from the bed and released by said clamps, on to a conveyor which carries them to a curing oven, cooling region, waxer, sensitizer, and inspection and packing station. Reference is made to Specification 1429061, which describes a similar coating plant.
Patent GB-1440062-A (GB)
Title: Loading devices for fork lift trucks
IPC: B66F9/12
Filed: 1972-05-26
Abstract: 1440062 Low lift truck WELDALL ENG Ltd 28 Aug 1973 [26 May 1972] 25044/72 Heading B8H A loading device, for use in association with a fork lift truck in the loading and unloading of a freight container or vehicle, comprises a pair of platforms 14, 15 connected together adjacent one end by a cross beam 16 and adapted to receive the forks 12 of a lift truck. Each platform has a pair of angle members 23, 24 fixed underneath with a frame 25 connected to the members 23, 24 by pivoted links 32. Rollers 26 are mounted on the frame 25 and are driven by chains 31 and sprockets 30 from a hydraulic motor 34. A ram 33 mounted on the crossbeam 16 is connected to the frame 25 to raise or lower the rollers 26 relative to the platforms. In operation the lift truck positions the device with a load thereon at the open end of a container, the rollers are then lowered and then driven to advance the device to the other end of the container. The rollers are then retracted to lower the platform free of the pallet and the device then reversed back to the lift truck. A similar procedure may be used to unload a container. Hydraulic power for the motor 34 and the ram 33 is supplied through hoses connected to the lift truck.
Patent GB-241206-A (GB)
Title: Improvements in apparatus for the manufacture of sheet glass
IPC: C03B13/04
Filed: 1925-10-08
Abstract: 241,206. Soc. Anon. des Manufactures des Glaces et Produits Chimiques de St.-Gobain, Chauny, et Cirey. Oct. 9, 1924, [Convention date]. Rolling.-Relates to a process for making sheet glass in which molten glass flows through a horizontal slot a in the front wall of a tank or forehearth and passes between rollers c, d arranged in contact with the outer face of the wall. According to the invention, the pass between the rollers is above the horizontal plane passing through the slot a so that that glass comes into immediate contact only with the lower roller, and touches the upper roller only in the zone g where flattening is effected. The glass is subjected to minimum of cooling, and the upper surface of the sheet formed by the rollers is sufficiently plastic to permit of the impression of a pattern.
Patent GB-430462-A (GB)
Title: Improvements in or relating to the steam superheating installations of steam generators
IPC: F22G5/20
Filed: 1934-08-31
Abstract: 430,462. Steam superheaters. SUPERHEATER CO., Ltd., and GEER, H. E., Bush House, Aldwych, London. Aug. 31, 1934, No. 25159. [Class 123 (iii)] In a superheater installed in a boiler and comprising primary and secondary sections and a controlled desuperheater between the sections, the headers 1, 2 and 3, 4 of the sections extend across the boiler and the U-tube elements 6 of the secondary section are equally distributed between or among the elements 5 of the primary section. The outlet 8 from the primary section and the inlet 9 to the secondary section are disposed on the same side of the boiler to facilitate connection to the desuperheater 11. A valve 16 in the steam admission pipe 12 of the desuperheater and a valve 15 in a byepass 14 are controlled by a thermostat 17 in the steam delivery main 18.
Patent GB-1216875-A (GB)
Title: Torque and/or thrust operator
IPC: F16D21/02
Filed: 1968-05-27
Abstract: 1,216,875. Clutches. KING OF PRUSSIA RESEARCH & DEVELOPMENT CORP. 27 May, 1968 [31 May, 1967], No. 25178/68. Heading F2L. An operator mechanism selectively couples either a first drive, e.g. a power drive, or a second drive, e.g. a manual drive, to an output member, e.g. a load shaft. Operation.-An output shaft 50 is driven from a motor-driven worm 14, or a hand wheel 60. When worm 14 rotates worm gear 11, lugs (22), Fig. 2 (not shown), engage the depending lugs (23) of a motor clutch drive ring 10 to rotate the latter. A pair of springs 31 centre lugs (30), Fig. 4 (not shown), of a hand wheel clutch drive sleeve 7 in a position where a land portion (46), Fig. 5 (not shown), of its depending skirt (44) is aligned with slots (42) of a clutch drive transfer ring 9, thereby projecting one roller of each pair of rollers 43 into the slots (41) of the motor clutch drive ring 10. The latter is rotated to drive an output nut 64 through a key 47 and a main output drive sleeve 20. The hand wheel clutch drive sleeve 7 is rotated by the frictional engagement of the rollers 43 against its skirt (44) so that the skirt land portions (46) remain in substantial alignment with slots (42). During motor drive the hand wheel 60 remains stationary but if it is rotated the motor drive is de-coupled as long as the hand wheel rotation continues because the frictional drag of O-ring 34 causes a roller guide 5 to lag relative to a drive ring 4. This causes the innermost roller of each of the groups of rollers (53) to enter a depression (33) in the hand wheel clutch drive sleeve 7, thereby preventing the latter from rotating faster than the hand wheel 60. The relative movement between clutch ring 8 and sleeve 7 compresses springs 31 and slots 42 of transfer ring 9 move out of alignment with land 46 and into alignment with slots 45. The motordriven rotation of the ring 10 forces rollers 43 radially inwardly and ring 10 rotates freely without driving the transfer ring 9 until the hand wheel is no longer rotated. Manual drive.-When hand wheel 60 is rotated the clutch drive ring 4 rotates whilst the rollers guide 5 tends to lag, thus causing the innermost rollers (53) to be forced inwardly until they engage depressions (33) of sleeve 7 which is then rotated with ring 4. Clutch ring 8 is prevented from rotating by ring 10 and the manual rotation of sleeve 7 causes the springs 31 to be compressed until the lugs 30 of sleeve 7 engage lugs 26 of ring 8 in which position the land portions (46) have moved out of alignment with slots (42) and the latter are aligned with slots (45), Fig. 9 (not shown). Rotation of the ring 9 relative to ring 10 causes the inner rollers of rollers (43) to enter slots (45) and the outer roller to leave the slots (41) is ring 10, thereby causing the sleeve 7 to be de-coupled from the motor drive. In modification, spherical rollers or spherical balls may be used.
Patent GB-518506-A (GB)
Title: Improvements in fluid-pressure brake devices for trailers
IPC: B60T11/10
Filed: 1938-08-27
Abstract: 518,506. Fluid-pressure brakes. BOSCH GES., R. (formerly BOSCH AKT.-GES., R.). Aug. 27, 1938, No. 25193. Convention date, Aug. 28, 1937. [Class 103 (i),] A brake for trailers controlled by a valve on the tractor and in which braking is greater on the trailer to keep the train of vehicles extended, comprises a valve 26 in the brake pipe connecting tractor and trailer which is opened by an extension 15<1> on the drawbar 15 when the pull of the tractor relaxes, e.g., when the driver removes his foot from the' accelerator pedal, by the action of a spring 22 on the draw-bar 15 and is closed when the pull between the tractor and trailer exceeds a predetermined amount. Thus if the braking on the trailer is excessive the valve closes and stops further braking of the trailer. The modification according to Fig. 2 comprises a trailer brake released by compressed air. A by-pass and check valve 31 allow changing of the trailer brake. In a modification the bar 15 is in two parts 15, 15<111>, Fig. 4, between which is arranged one arm of a lever 34 which is connected to the hand' brake lever on the tractor so that the valve may be opened to completely apply the brake when the vehicles are stopped on a hill. The valve device may also be modified as shown in Fig. 4 by the arrangement, of a piston 20<111> on the bar 15<111> The space behind that piston is connected to a reservoir of compressed air by a pipe 38. On excessive braking on the trailer and excessive pull on the bar 15 the valve 26 is seated and the hollow piston rod 15<111> is raised from this valve and admits compressed air to the brakes in order partially to release them to the required braking value.
Patent GB-798978-A (GB)
Title: Improvements in or relating to tools for assembling spring retaining rings
IPC: B25B27/20
Filed: 1956-08-17
Abstract: 798,978. Holding tools for spring rings. WALDES KOH-I NOOR, Inc. Aug. 17, 1956 [Sept. 14, 1955], No. 25230/56. Class 61. A tool for holding a'split spring ring of the vertically bowed open type and applying it to a shaft, pin or the like comprises a blade 10 whose working end 12 terminates in a transverse edge 14 notched at 15 and having on its underside an arcuate shoulder 18 and a leaf spring 20 riveted to the blade at 22 which secures a ring in position against the shoulder 18 with the inner edge of the ring overhanging the notch 15. The working end of the blade 10 is off-set at an angle and a handle is provided. Specification 752,758 [Group XXV] is referred to.