baber/WOPTO huggingface dataset:
Patent GB-784130-A (GB)
Title: Improvements in or relating to endless-track tractors with interchangeable work-devices or implements
IPC: B62D49/02
Filed: 1953-10-05
Abstract: 784,130. Shovelling machines; earth-working apparatus. ALUMINIUM CASTINGS CO., Ltd. Oct. 5, 1953 [Oct. 7, 1952], No. 27203/53. Class 68(1) [Also in Groups XXX and XXXI] An endless track tractor with interchangeable work devices or implements has a frame 12 mounted on the top part of the tractor within the lateral and fore-and-aft limits bounded by the tracks, the frame being rotatable about a vertical axis and adapted to mount a detachable jib 21, the pivots for the frame being on opposite sides of its axis of rotation and each located in the plane of the jib-lifting movement, a counter-weight 17 extending outwardly from the frame in the said plane. As shown the tractor is provided with the engine 2, the operator's seat 3 surrounded by a protective frame 6, and a breast wall 4 incorporating a rope winch at the front end. A platform 5 is provided at the rear of the tractor and carries a frame 12 rotatable about an axis 11. The frame 12 carries a counterweight 17 and a curved scoop-arm 14 is pivoted thereon at 13. The arm 14 is raised and lowered by an oil piston and cylinder 16 pivoted at 13a on the frame 12, the arm 14 carrying a scoop 15 with a releasable floor 15a. The scoop 15 co-operates in the full-line. position in Fig. 1 with a fender 7 pivoted at 8 to the tractor chassis 1 and raised or lowered by an oil piston and cylinder 10, the co-operating members comprising an angle iron 18 and a transverse girder 19. When the scoop 15 is used for adamant loads the pistons and cylinders 10, 16 can be used together to raise the scoop. The tractor can be modified for use as a levelling machine, Fig. 2 (not shown), by removing the arm 14 and the piston and cylinder 16 and fitting a levelling blade on the fender 7. The tractor can be further modified for use as a crane by removing the fender 7 and mounting on the frame 12 a framework 24, Fig. 3, carrying a jib 21 employed in conjunction with a rope winch 22. A pair of steerable wheels 25 are fitted on the front of the tractor.
Patent GB-1465148-A (GB)
Title: Purification of sorbic acid
IPC: B01D9/02
Filed: 1974-06-20
Abstract: 1465148 Sorbic acid HOECHST AG 20 June 1974 [22 June 1973] 27390/74 Heading C2C Sorbic acid is purified by recrystallizing the crude from an aqueous solution containing at least 15% of an ammonium or alkali metal salt of a monocarboxylic acid (only C, H and O atoms present), or of phosphoric acid. Sodium or potassium salts are preferred and a list of acetates, propionates, capronates, sorbates, benzoiates, salicylates, hydroxybenzoates and hydrogen phosphates are given. Active carbon may optionally be present.
Patent GB-444961-A (GB)
Title: Improvements in or relating to fire extinguishing apparatus
IPC: A62C13/00
Filed: 1934-09-24
Abstract: 444,961. Fire-extinguishers; nozzles. WARREN, S. F., 27, Lowick Road, Harrow, and BAKER, J. C. Y., 45, Dagmar Avenue, Wembley, both in Middlesex. Sept. 24, 1934, No. 27430. [Class 47 (ii)] [See also Group XXIX] A fire - extinguisher which is covered with a layer of electrically insulating material, such as rubber, has the layer thickened or reinforced at those parts which are handled or are particularly liable to wear. As shown, the base rim, the handle 4, and the rim of the wheel cap 6 are fitted with rubber tubing 3, 5 and 7. The entire extinguisher is then coated with a rubber layer 2 by dipping or spraying. Alternatively, protection may be afforded by embedded layers of mica or the like. The nozzle 8 may be formed of insulating material or coated therewith, and may be fitted with a drip-preventing disc 10. Where the extinguisher is started by a plunger 12 or other moving parts, these may be shrouded by telescoping sleeves 13, 14 or by a flexible bag, or may be formed of insulating material. The insulating material, such as rubber, may be fire-proofed. Specification 20497 /08, [Class 47], is referred to.
Patent GB-866713-A (GB)
Title: Fuel injector mechanism for internal combustion engines
IPC: F02D9/00
Filed: 1957-08-30
Abstract: 866,713. Regulating. BORG-WARNER CORPORATION. Aug. 30, 1957 [Sept. 7, 1956]. No. 27435/57. Class 7(6). [Also in Group XXVIII] A fuel injection pump control member is controlled by suction in a conduit 162 set up by an orifice 152 in the edge of the throttle valve and an orifice 153 in its downstream face, which suction increases with increasing air flow and throttle opening and decreases the fuel supply. The pump control member 68 is controlled by a cam 100 which is moved axially by a diaphragm 128 responsive to engine load and transversely by a diaphragm 123 responsive to engine speed as measured by the suction produced in the chamber 148 in the throttle valve. For small throttle openings the pressure in chamber 148, which is conducted through a passage 149 in the throttle spindle 146 to a chamber 163 con nected by a pipe 162 to diaphragm 123, is intermediate the pressures upstream and downstream of the throttle valve and varies with engine speed and throttle opening. The cam 100 has pins 102, 101 sliding in grooves 106, 109, in guide plates 103, 107 which are pivoted at 105, 108. As the suction in chamber 148 diminishes with increasing throttle opening, diaphragm 123 swings plate 103 to the right to move cam 100 and control member 68 to the right to increase the fuel supply. The lower guide plate 107 is controlled by a capsule 177 responsive to ambient pressure and temperature. On increase of load the pressure at point 157 increases, causing diaphragm 128 to move the cam 100 upwards whereby its inclined face 115 moves member 68 in the increased fuel direction. On rapid acceleration a loose piston and cylinder connection 133, 132, between the rod 129 of diaphragm 128 and the guide plate 103 causes temporary rapid movement of plate 103 to the right to increase the fuel supply, an extension bracket 110 contacting the lower guide plate 107 to force it to the right to further increase the supply. The plates 103, 107 resume their normal positions after acceleration under the force of a spring-loaded lever 116 which holds member 68 against the cam face 115, the air leaking slowly past the loose piston 133. The suction in chamber 163 is modified during cold running to increase the fuel supply by opening of a valve 170, controlled by a capsule 171 responsive to engine temperature, to connect a passage 167 leading to pressure tapping points 158, 159 to the chamber 163. Enrichment at idling is also obtained by opening of a valve 172 by a cam 173 on the throttle shaft to connect passages 160, 161, to the chamber 163 and modify the suction therein. The fuel injection pump and its control means connected to member 68 is identical with that in Specification 866,712.
Patent GB-813084-A (GB)
Title: Manufacture of high early-strength cements from granulated blast furnace slags
IPC: C04B7/21
Filed: 1957-09-02
Abstract: Cements of high early strength increasing progressively with time comprise a high proportion of finely ground granulated blast furnace slag mixed with a small proportion of anhydrous sodium sulphate (about 4 per cent. by weight) and a small proportion of either hydrated lime (about 2 per cent. by weight) or Portland cement clinker (about 5 per cent. by weight).
Patent GB-449287-A (GB)
Title: Improvements in or relating to valves for motor car and cycle tyres
IPC: F16K15/20
Filed: 1935-10-05
Abstract: 449,287. Valves for tyres. BOTHE, O., 4, Bornestrasse, D³sseldorf, Germany. Oct. 5, 1935, No. 27572. [Class 135] The body, such as 5, Fig. 3, is made of light metal and with an annular knife-edge seat 6 and is itself in air-tight contact with the inner tube of the tyre, a flexible closure member 7 having an annular unsupported part outside the seat. The closure member 65 in the form of valve shown in Fig. 16 is supported at its edge by a flange on the body part 64, and has holes round the edge as shown ; the tube wall 67 is clamped between the body 64 and a sleeve 68 which is pressed down by a screwed collar 72. The body may be formed with a central support 30, Fig. 8, for the closure disc 29. The edge of the disc is clamped in another modified form. The valve is preferably placed so that centrifugal force tends to close it. More than one annular seat may be provided. In Fig. 17 a non- removable cap 77 is formed with a bead 78 adapted to bear against a stop ring 79 when unscrewed. The valve may be opened by screwing up the cap which thereupon presses down a part 80 and thus a rod 81.
Patent GB-807829-A (GB)
Title: Improvements in piston apparatus for pressurising liquid
IPC: F15B7/08
Filed: 1956-09-10
Abstract: 807,829. Syringes. MASCHINENFABRIK HILMA G.m.b.H. Sept. 10, 1956 [Sept. 9, 1955], No. 27654/56. Class 102(2). A high pressure plunger 5 is screwed into a spindle 3 which is screwed into a cylinder 1 and carries a low pressure plunger 2. The spindle 3 is connected to the high pressure plunger 5 by a spring loaded slippable coupling 9, 11 so that when a certain pressure is built up in the cylinder by the combined plungers the coupling disconnects the plunger and a high pressure is built up by the plunger 5. The plunger 2 may be connected to the spindle 3 by balls 4, or be loaded by a return spring. The cylinder 1 communicates with a cylinder 17 having a spring loaded piston 19 in a screwed cap 18 removable for filling the system connected to the cylinder 1 and by which an initial pressure in the system may be pre-set. The end of the piston 19 is provided with a pressure scale 21.
Patent GB-435648-A (GB)
Title: Method of dewaxing mineral oils
IPC: C10G73/06
Filed: 1934-09-27
Abstract: In the separation of wax from mineral oil by diluting with a solvent heavier than any of the wax, chilling, and centrifuging, there is fed into the bowl simultaneously with the oil a liquid which is insoluble in the oil or solvent and is lighter than the solution of oil, so that it leaves the bowl together with the wax. Suitable solvents are trichlorethylene and dichlorethane. Insoluble liquids specified are aqueous solutions of alcohol, glycerine, or inorganic salts, e.g. calcium or magnesium chloride. Preferably the liquid is chilled before admission to the centrifuge; it may be admitted through a separate inlet or already mixed with the solution of oil; an anti-emulsifying agent may be present; and the liquid is recovered from the wax and oil and used again.  In examples: (1) calcium chloride brine of 22 per cent strength and S.G. 1,2 is centrifuged at -20 DEG  C. with a solution of S.G. 1,27 obtained by diluting 35 litres of mineral oil with 65 litres of trichlorethylene; (2) 19 per cent magnesium chloride brine S.G. 1,17 is centrifuged at -27 DEG  C. with a solution of 45 litres of oil in 55 litres of trichlorethylene. Specification 166,031, [Class 91], is referred to.
Patent GB-253787-A (GB)
Title: Improvements in or relating to shock absorbers for vehicles
IPC: F16F9/04
Filed: 1925-11-04
Abstract: 253,787. Lege, L. Nov. 4, 1925. Pneumatic springs.-In apparatus of the kind comprising an inflated casing formed from two cup-shaped elastic members a having pistons bearing upon its upper and lower sides, the bearing surfaces of the pistons k, p are smaller in area than the free surfaces of the elastic members. The edges of the elastic members a are separated by a grooved ring c and are clamped between the edges of upper and lower covers e which also form guides for the pistons k, p connected respectively to the frame i and axle o. Solid elastic blocks u, v contact with one another in the event of deflation. The ends of the pistons may be covered by lubricating material s. Wooden piston guides n, filling pieces q, and rubber insertions t may be provided.
Patent GB-655164-A (GB)
Title: Improvements in or relating to electronic discharge tubes applicable to ultra-short waves
IPC: H01J23/27
Filed: 1947-10-17
Abstract: 655,164. Travelling - wave tubes. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. Oct. 17, 1947, No. 27819. Convention date, Jan. 6. [Class 39 (i)] In a travelling-wave amplifier in which an electron beam reacts with and gives up energy to an electromagnetic wave travelling along a helix h, a D.C. voltage is applied between members e, s at the ends of the helix such that in the absence of the wave it would accelerate the electrons. This is stated to improve the efficiency and gain of the device. The electron velocity through the helix is slightly greater than the wave velocity. The wire of the helix is of small diameter or of great specific resistance to reduce the power dissipation due to direct current flowing through it, and the attenuation may be reduced by covering the wire with a layer of metal of good electrical conductivity. The usual accelerating and focusing electrodes 1, 2, 3 are provided.
Patent GB-1522661-A (GB)
Title: System for the conversion of sea wave energy
IPC: F03B13/16
Filed: 1975-07-02
Abstract: 1522661 Utilizing wave energy K BUDAL and J FALNES 2 July 1975 [4 July 1974] 27837/75 Heading F1S Apparatus for the conversion of sea wave energy comprises a movable member, termed an interacting member, which is made of solid or elastic material and which is an integral part of a damped oscillating system which comprises an energy absorbing mechanism which is adapted to produce usable energy and/or dissipate energy and the interacting member interacts with the waves and thereby is subjected to oscillating forces from the waves so as to make the oscillating system oscillate. A flywheel is so coupled to the interacting member as to add to the effective mass of the oscillating system to the effect that the natural frequency of the system is made essentially equal to the characteristic frequency of the sea waves. In a modification the flywheel is replaced by drive means adapted to impart an oscillating movement to the interacting member. As shown a tank 1 is kept in position by a wire, chain or the like 2 which is passed over rollers 3 and 4 and secured to a buoyant member 6. The roller 3 is associated with a flywheel 7 which again is associated with an electrical generator in any convenient manner. Fig. 5 (not shown) relates to an embodiment comprising a pair of gas filled tanks. One tank is provided with a movable or flexible wall portion which is the interacting member and is positioned below the sea surface. A conduit joining the tanks is provided with a turbine associated with a generator.
Patent GB-665725-A (GB)
Title: Process for the activation of cellulose and for the production of cellulose esters
IPC: C08B1/02
Filed: 1949-10-31
Abstract: Cellulose is activated for esterification by thoroughly impregnating it with a lower aliphatic acid (i.e. one containing 2-4 carbon atoms in the molecule) of concentration 80-100 per cent by weight free from or containing not more than 2 per cent (on the weight of the cellulose) of an acidic esterification catalyst, and treating the impregnated cellulose with a further amount of a lower aliphatic acid and at least 5 per cent of acidic esterification catalyst (including any already present) for a period of not more than 15 minutes.  The lower aliphatic acid is preferably the acid into an ester of which the cellulose is to be converted or, when a mixed ester is to be made, is the more reactive of the esterifying acids.  For the subsequent esterification, the pretreated cellulose may be subjected to the action of the anhydride or anhydrides of the desired esterifying acid or acids.  The cellulose may be cotton linters, purified wood pulp, or cellulose derived from bamboo, reeds, jute, esparto, grasses, straws, hulls, or bark.  It may be in the form of loose fibres, or in sheet, strip, or board form.  Cellulose acetate, propionate, butyrate, benzoate, or a mixed ester such as cellulose aceto-stearate, may be produced.  Sulphuric acid, phosphoric acid, or zinc chloride may be used as acidic catalyst.  Both stages of the pretreatment may be effected at room temperature.  To ensure thorough impregnation, the cellulose fibres may be treated in a container which is provided with paddles, or they may be treated in a pulp-beater or refiner of a kind used in paper making.  The fibres may be fibrillated.  Sheets or boards may be treated by spraying, dipping, or roller-coating, sufficient time between the first and second stages being allowed to permit the liquid to diffuse throughout the material.  The state of impregnation may be observed by adding a dye to the impregnating liquid.  In an example, cotton linters are stirred with glacial acetic acid for 5 minutes.  A further quantity of acetic acid is then added together with sulphuric acid, and stirring is continued for 2 minutes.  The mixture is then introduced into acetic anhydride which has been precooled to 0 DEG C.  The temperature is allowed to rise to 65 DEG  C. in 3 minutes, by which time a clear solution of the cellulose acetate is obtained.  In another example, a strip of cotton sheet is passed continuously through a spray chamber containing two sets of spray nozzles arranged so that liquid is sprayed uniformly and equally on both sides of the sheet.  Glacial acetic acid is sprayed from the first set of nozzles, and after the sheet has travelled for 5 minutes it reaches the second set of nozzles and is sprayed with a mixture of glacial acetic acid and sulphuric acid.  The sheet is then disintegrated by a rotating metal brush and the fibres are esterified with acetic anhydride. Specification 664,465 is referred to.
Patent GB-492426-A (GB)
Title: Improvements in elastic pulleys, wheels and rollers
IPC: F16D3/50
Filed: 1937-10-13
Abstract: 492,426. Vehicle wheels. JULIEN, M. F. A. Oct. 13, 1937, No. 27894. Convention date, Oct. 20, 1936. [Class 144 (i)] [Also in Group XXIV] In an elastic railway-vehicle wheel, having resilient means 5, such as rubber, arranged between a web 8 on its rim 1 (or hub) and flanges 2, 3 on its hub 2 (or rim), the rubber is adhesively connected to plates 6, 7 and is provided with clearance holes for the passage of bolts 4, 9 which rigidly connect respectively the outer plates 6 to the hub-flanges 2, 3 and the inner plates 7 to the rim-web 8. The bolts 4 carry distance-sleeves 14 to limit the initial compression, if any, of the rubber 5, as the axially-guided flange 3 is drawn towards the hub - flange 2. The distance - sleeves 14 adhesively carry rubber sleeves 14<1> which yieldingly limit relative circumferential movement between the hub and rim as the rubber 5 yields in shear. Relative radial movement, also with the rubber 5 in shear, is yieldingly limited by a rubber sleeve 13 adhering to a central ring 12. Relative axial movement between rim and hub places one half of the rubber 5 in compression, and the other in tension. Specification 493,119, [Group XXXII], is referred to.
Patent GB-503925-A (GB)
Title: Improvements in or relating to the reduction of iron ores in blast furnaces
IPC: C21B5/02
Filed: 1937-10-14
Abstract: 503,925. Iron manufacture. GES. FUR LINDE'S EISMASCHINEN AKT.-GES. Oct. 14, 1937, No. 27980. Convention date, Oct. 14, 1936. Drawings to Specification. [Class 72] Acid low-grade iron ores are, after drying and if necessary roasting, reduced in a blast furnace with a slag having a ratio of lime to silica content of less than 0À8 per cent, the temperature in the furnace being maintained above that at which the slag flows freely by enriching the blast with oxygen. Substantially the same degree of desulphurization of the iron is obtained as when slags having a higher ratio of lime to silica are employed. In an example, the slag contains 64 per cent of silica and 13À5 per cent of lime, the blast being heated to 700‹ C. and enriched to contain 26 per cent of oxygen.
Patent GB-628803-A (GB)
Title: Improvements in or relating to chain-tensioning devices
IPC: F16H7/08
Filed: 1947-10-21
Abstract: 628,803. Chain gearing. DAIMLER CO., Ltd., and TAIT, J. N. H. Oct. 21, 1947, No. 28073. [Class 80 (i)] A chain tensioning slipper is of a non-metallic resilient material so as to reduce noise. As shown the slipper 5 is, of tubular form and of rubber, - preferably oil resisting, reinforced by canvas plies 6. A spring 9 may also be provided, the whole being secured by a bolt 8 to the casing 4. In a modified form the slipper comprises a solid block of rubber with transverse holes bonded to a metal securing plate.
Patent GB-535398-A (GB)
Title: An improved manufacture of branched-chain paraffin hydrocarbons
IPC: C07C5/27
Filed: 1939-10-17
Abstract: 535,398. Hydrocarbons. STANDARD OIL CO. Oct. 17, 1939, No. 28082. Convention date, Dec. 14, 1938. Drawings to Specification. [Class 2 (iii)] Normally liquid straight-chain paraffin hydrocarbons are converted to branched-chain paraffin hydrocarbons by subjecting them to the action of a catalyst of the aluminium chloride type and an activator for said catalyst at a temperature between 300‹ and 550‹ F., under a pressure of 500 to 6,000 lb. per square inch and in the presence of free hydrogen and a light paraffinic gas containing a substantial amount of propane. The preferred catalysts are aluminium chloride and bromide, and the activator is a hydrogen halide or a compound which yields a hydrogen halide under the reaction conditions, e.g., carbon tetrachloride, or methyl or ethyl chloride or bromide. The light paraffinic gas usually consists of propane and at least one of the butanes. The feed stock may consist of a relatively pure hydrocarbon such as n-heptane, but predominantly paraffinic straight-run naphthas are usually employed. The feed stock should be almost free from aromatic hydrocarbons, and should not contain more than relatively small quantities of olefines or naphthenes. Not more than 65 to 70 per cent. of the feed should undergo reaction per pass through the reaction zone, and the products are separated into a catalyst-containing portion, a hydrocarbon fraction containing at least 5 carbon atoms per molecule, and a gaseous fraction containing hydrogen and hydrocarbons with less than 5 carbon atoms to the molecule. The catalyst-containing and gaseous fractions are returned, at least in part, to the reaction zone, while the heavy hydrocarbons may be further fractionated into light and heavy portions, of which the latter may be returned to the reaction zone. The gaseous fraction may also be separated into a portion consisting principally of isobutane, and a further portion containing propane and lighter gases, which is returned to the reaction zone. Two layouts of plant are figured and described. In one arrangement, the conversion is effected in two separate reaction zones, one being maintained at a temperature between 100-300‹ F., and the other between 300-550‹ F., at least a part of the catalyst-containing and hydrocarbon fractions from the first zone being introduced into the second zone.
Patent GB-443769-A (GB)
Title: Improvements in exhaust gas purifiers for internal combustion engines
IPC: F01N3/30
Filed: 1935-10-11
Abstract: 443,769. Purifying exhaust. BLUM, R., Hotel Waldorf-Astoria, Park Avenue, New York, U.S.A. Oct. 11, 1935, No. 28139. [Class 7 (ii)] Air is admitted to the exhaust gases by passages H leading into a cup or funnel D into which also enters a nozzle C conveying a part of the exhaust gases. A Venturi G is inserted in the exhaust pipe B, and a second Venturi J may be arranged as shown. The air inlets may be controlled by shutters or flaps actuated by the accelerator. Specification 424,731 is referred to.