baber/WOPTO huggingface dataset:
Patent GB-984512-A (GB)
Title: Ammonium nitrate-hydrocarbon or-fatty acid-urea inclusion compound explosives
IPC: C06B31/30
Filed: 1963-11-15
Abstract: A stabilized blasting explosive is prepared by incorporating with granular ammonium nitrate an inclusion compound of urea and an aliphatic hydrocarbon or a fatty acid.  The explosives do not segregate and retain their sensitivity on storage.  From 3 to 6 parts by weight of urea may be associated with 1 part of the hydrocarbon or acid and the inclusion compound may comprise 2 to 25% by weight of the explosive.  In one method of preparation, the hydrocarbon or acid is added with stirring at room temperature to an alcohol solution of urea; the inclusion compound crystallizes out, is separated by filtering and drying, and then mixed with ammonium nitrate.  In an alternative process, the inclusion compound is formed in situ by adding an alcohol solution of urea, or urea moistened with alcohol, to a mixture of ammonium nitrate and the hydrocarbon or acid, and the solid filtered off and dried if necessary.  In examples, the following are used in addition to urea: finely ground or agricultural grade ammonium nitrate, methanol or ethanol, C9 to C20 paraffinic hydrocarbons, dodecane, 1-decene, eicosane, kerosene, or oleic acid.ALSO:Inclusion compounds of urea and an aliphatic hydrocarbon or a fatty acid, useful as stabilizers for ammonium nitrate explosives (see Division Cl), are prepared by stirring a lower alcohol solution of urea with the hydrocarbon or acid, preferably at 55 DEG -60 DEG C.  From 3 to 6 parts by weight of urea may be associated with 1 part of hydrocarbon or acid.  Specified hydrocarbons are decane, undecane, dodecane, tridecane, tetradecane, pentadecane, hexadecane, heptadecane, octadecane, nonadecane, eicosane, 1-decene, kerosene, and a mixture of C9 to C20 paraffin hydrocarbons; specified acids are stearic, oleic, linoleic, and linolenic acids.  The inclusion compound may be formed in situ mixed with the ammonium nitrate.
Patent GB-1195516-A (GB)
Title: Toothed Belt Drive
IPC: F16G1/28
Filed: 1968-09-24
Abstract: 1,195,516. Toothed belt gearing. CONTINENTAL GUMMI-WERKE A.G. 24 Sept., 1968 [13 Oct., 1967], No. 45279/68. Heading F2Q. To ensure long service life and silent operation of a reinforced rubber or plastics toothed belt 1 engageable with toothed driving and driven gear-wheels 2, 3 respectively, the tooth pitch of the driving gear-wheel 2 is larger than that of the driven gear-wheel 3 but smaller than the tooth pitch of the belt 1, the difference in the tooth pitches corresponding to the elastic deformation of the belt teeth occurring due to the tensile load transmitted by the belt. To ensure correct synchronization of the toothed belt drive, the gaps between the teeth of the driving and driven gear-wheels 2, 3 in the circumferential direction are wider than the width of the belt teeth la in the circumferential direction of the toothed belt by at least the difference in the tooth pitches multiplied by the number of engaging belt teeth. The toothed belt 1 may be of polyurethane with reinforcing members (not shown) embedded therein in the form of helically coiled steel wires continuous in a longitudinal direction, the teeth 1a being moulded or machined of trapezoidal cross-section on the inner belt surface. The teeth 2a, 3a on the driving and driven gear-wheels 2, 3 are of similar cross-section and have involute-shape arcuate flank faces.
Patent GB-969058-A (GB)
Title: Improvements in soil stabilization
Inventor: THOMPSON CHARLES EDWARD
IPC: C09K17/32
Filed: 1961-12-20
Abstract: 969,058. Stabilizing soil. PRODUCTS DEVELOPMENT CO. Dec. 20, 1961, No. 45611/61. Heading E1F. A method for stabilizing soils comprises mixing with the soil prior to compaction 0À1-5À0% by weight of the dry soil of a waterinsoluble, alkali-soluble protein (e.g. caesin glutenin, zein, gliadin, hordein or bynin) or a water solubilized sclero protein (e.g. glue or gelatin) and 1-20% of an alkaline earth metal oxide or hydroxide, Portland cement or one or more of these, the ratio of alkaline material to protein being at least 1:1. 0À5 to 3À0% of ferric oxide may be added as an acceleration. The temperature for mixing should be at least 40‹F. and the soil should be screened to pass a No. 10 screen (U.S. Bureau of Standards). The soil treated according to the invention may be used in the preparation of bricks, foundations for roads and other structures, piling, dams and levels.
Patent GB-1422813-A (GB)
Title: Electric battery charger
IPC: H02H9/02
Filed: 1973-10-01
Abstract: 1422813 Battery charging systems STAPLES DEVELOPMENTS Ltd 28 Aug 1974 [1 Oct 1973] 45677/73 Heading H2H A system whereby a battery connected to a pair of positive and negative terminals may be charged from an A.C. supply by way of a transformer T and full wave rectifiers D, D includes a changeover switch C1, in position B of which the negative terminal is connected directly to the D.C. supply and in position C to the D.C. supply by way of a resistor R. The switch C1 has a bimetal strip A with a wide current differential and a normal position B such that if a 12 volt battery is connected to the positive and negative terminals the switch C1 will remain in position B to charge the battery. If the connected battery is a 6 volt battery the high current causes the strip A to deflect to position B so that the resistor R produces a drop in voltage in order that the 6 volt battery is normally charged. The system is also provided with an overload device C3 and a self-resetting overload circuit breaker C2 which protects the system against a reversely connected battery or a short circuit across the positive and negative terminals. The circuit breaker C2 is a bimetal type and has a higher current setting than the switch C1.
Patent GB-1357610-A (GB)
Title: Oil recovery from subterrane
IPC: E21B43/17
Filed: 1971-10-01
Abstract: 1357610 Wells &c TEXACO DEVELOPMENT CORP 1 Oct 1971 45712/71 Heading E1F Hydrocarbons are recovered from a calcareous formation by injecting through at least one injection well a dilute hydrochloric acid having a concentration of hydrogen chloride of 0.05 per cent to 5.00 per cent by weight and by producing hydrocarbons from one production well. The hydrocarbons may be driven by more of the acid or by water. In a modification slugs of dilute hydrochloric acid having a size of “ to 1¢ pore volumes of the formation alternate with slugs of water.
Patent GB-1501800-A (GB)
Title: Optical conductor cable
IPC: G02B6/44
Filed: 1976-11-04
Abstract: 1501800 Sheathed optic fibres F FORT 4 Nov 1976 [14 Nov 1975] 45842/76 Heading G2J The or each fibre is surrounded by a sheath of acetate copolymer and the, or the bundle of fibre(s) is enclosed in a sheath of polypropylene carrying a layer of polyurethane. The initial sheath may have a clearance of 0À1-0À2 mm on the fibre it encloses.
Patent GB-1402932-A (GB)
Title: Articulated vehicles
IPC: B61G5/10
Filed: 1972-10-06
Abstract: 1402932 Pivoted connections INTERNATIONAL HARVESTER CO 6 Oct 1972 [12 Oct 1971] 46245/72 Heading E2F [Also in Division B7] In a pivoted connection suitable for extending electrical wires 10 between the units of an articulated vehicle two box enclosures 12 and 24 mounted on the rear and front frame sections respectively of the articulated vehicle are pivoted together by a coupling means 20, the wires passing through an aperture in a sleeve 30. The wires are confined by securing means 54 and 56 to the upper and lower box enclosures 12 and 24 respectively and enter conduits 14. 26 provided on the box enclosures 12 and 24 respectively. The sleeve 30 is welded at its upper end to the bottom 32 of the upper box enclosure 12 and an outer collar 34, which surrounds the sleeve 30, is welded to the top 36 of the lower box enclosure 24. Synthetic washers are provided between the outer collar 34 and the sleeve 30.
Patent GB-1165080-A (GB)
Title: Improvements in or relating to the Dispersion of Calcium Compounds in Liquid Lubricating Oils
IPC: C10M159/24
Filed: 1967-10-10
Abstract: 1,165,080. Overbased sulphonates. WITCO CHEMICAL CO. Inc. 10 Oct., 1967 [12 Oct., 1966], No. 46291/67. Heading C5F. A colloidal dispersion of an overbased calcium compound in a mixture of mineral lubricating oil and an oil-soluble dispersing agent, e.g. a sulphonic acid or a calcium sulphonate e.g. derived from an aromatic petroleum hydrocarbon having a molecular weight of 300- 500, is made by carbonating a suspension of calcium methoxide in isobutanol.
Patent GB-1516986-A (GB)
Title: Fuel control system for a gas turbine engine
IPC: F02C9/32
Filed: 1974-10-26
Abstract: 1516986 Automatic control of flow LUCAS INDUSTRIES Ltd 7 Oct 1975 [26 Oct 1974 4 Jan 1975 5 Feb 1975] 46403/74 341/75 and 4829/75 Heading G3R [Also in Divisions Fl and G1] The flow of fuel to a gas turbine 10 is controlled by a system in which the flow is measured by passing it through a known fluidic oscillator 13 also Fig. 2, (not shown) whose frequency depends upon the flow rate and which produces a corresponding electrical signal for comparison with a desired flow signal, any difference causing adjustment of a fuel metering device. The desired flow is derived at 24 from measurements of turbine speed and compressor delivery pressure, and a manually set value for speed or power. As shown, the metering device comprises a valve 14 positioned by an electrohydraulic servo unit 18; this is operated by filtered fuel bled from 13 and returned to the fuel reservoir 12. The oscillator measures the total flow, from which the servo flow is subtracted at 16 to give the required turbine flow on line 22. A slowacting mass flow meter 29 also provides a fuel flow signal and a valve position signal is produced at 27. All the signals are combined at 23 to control the servo. 28 is a read-out device and 11 is an engine driven fuel pump, alternative arrangements for which are described Figs. 3 and 4, (not shown).
Patent GB-1486354-A (GB)
Title: Flow responsive pressure relief valve
IPC: F16K31/385
Filed: 1975-11-12
Abstract: 1486354 Fluid-pressure servomotor systems CATERPILLAR TRACTOR CO 12 Nov 1975 [17 March 1975] 46751/75 Heading G3P [Also in Division F2]  The head portion 76 of a spring-loaded spool 74 of a flow responsive pressure relief valve 12 is provided, downstream of a frusto-conical nose portion 90, with a stepped and shaped portion 92, 94, 96 constructed so as to prevent oscillation of the valve by providing a proportionally greater "lift" of the spool the greater the fluid-pressure in an inlet passage 32 of the valve above a predetermined pressure at which the valve opens. As the valve first opens, Fig. 2, a thin stream of fluid impinges mainly on the frusto-conical surface 94 causing a reaction on the spool, a small proportion of which is in the axial direction, whereas when the valve is wider open, a thicker stream of fluid impinges mainly on the annular step 98 causing a reaction on the spool, a large proportion of which is in the axial direction. An annular valve seat 40 is provided between the inlet passage 32 and an outlet chamber 38. As shown, the valve is opened by a pilot valve 68 and is used to control the pressure of fluid operating a double acting hydraulic jack 22.
Patent GB-968573-A (GB)
Title: Improvements in or relating to apparatus for dispensing liquids by gaseous pressure
IPC: B65D83/14
Filed: 1962-12-11
Abstract: 968,573. Delivering measured quantities of liquid. PRECISION VALVE CORPORATION. Dec. 11, 1962 [Dec. 20, 1961], No. 46803/62. Heading B8N. [Also in Division F1] In an aerosol dispenser having a metering ball 5, Fig. 1, which is forced up the dip tube 4 to deliver the liquid above it, the valve member 8 has a hollow extension 16 which projects into the dip tube when the valve is opened so that when the ball reaches the top of the dip tube, it engages and closes extension 16 until the valve is released to withdraw extension 16 into the valve housing, communication then being established between the upper and lower surfaces of the ball, by a groove 34 or pins on the end of the valve housing, to permit the ball to fall back to a stop 20. In the open position of the valve, the clearance between extension 16 and passage 15 in the valve housing is closed by engagement of frusto-conical surfaces 35 and 18, Fig. 3, on valve member 8 and housing 7, the inclination of surface 35 being less than that of surface 18 to provide a narrow contact surface. In the embodiment of Fig. 5, valve housing 7 has internal grooves 46 through which liquid passes to an aperture 45 in the discharge nozzle 6.
Patent GB-1033086-A (GB)
Title: Weaving looms
IPC: D03D49/24
Filed: 1962-12-12
Abstract: In a vertical loom having a plurality of shuttles containing weft for one pick crossing the loom simultaneously in sheds of travelling-wave form, each warp thread is shed by an individual pneumatic cylinder, the shuttles are propelled by a travelling magnetic field, and the weft is beaten up by pneumatic cylinders operating a small groups of reed blades.  At the input side of the shed a spool previously wound with sufficient weft for one pick is automatically inserted into a shuttle, which is then projected by the piston rod of a pneumatic cylinder into range of the travelling magnetic field.  A cap, which is a friction fit on the end of the weft spool, has a projection engaging a notch in the shuttle, it is prevented from rotating and so tensions the weft.
Patent GB-1063350-A (GB)
Title: Improvements in or relating to gear drive assemblies
Inventor: DOWNS THOMAS ARTHUR
IPC: B23B45/00
Filed: 1964-11-18
Abstract: 1,063,350. Toothed gearing. BLACK & DECKER Ltd., and T. A. DOWNS. Nov. 17, 1965 [Nov. 18, 1964], No. 46982/64. Heading F2Q. A gear drive assembly for a power tool comprises a motor shaft 2, an intermediate shaft 6 and an output shaft 3 mounted in a two-part housing 9, 10 by self-aligning spherical bearings 17, 18, 16 located in co-operating hemispherical recesses formed in the housing parts 9, 10 and a self-aligning intermediate member 15. The casing parts are held together by bolts 11. In a modification, the bearings are formed of cylindrical sleeves having external spherical surfaces.
Patent GB-1005013-A (GB)
Title: Improvements in or relating to twisting machines
IPC: D01H1/36
Filed: 1962-05-09
Abstract: 1,005,013. Toothed gearing. MAREMONT CORPORATION. May 9, 1962 [May 9, 1961], No. 46993/64. Divided out of 1, 005, 012. Heading D1D. [Also in Division F2]. In a textile spinning-frame, in which a shaft 44 carrying tapes supporting traversed elements such as ring-rails, balloon restrictors, and thread guides, is reciprocated and advanced stepwise as described in Specification 1, 005, 012, the shaft is loaded just to offset the weight of the elements by means which comprises a torsion-bar 72. The torsion bar extends the length of the frame and is connected to the shaft by an arm of a length which varies during the build constituted by a cam 66 pivoted in forked arms 70 of a bracket 68 secured to the bar. To enable one cam to serve under different conditions e.g. those brought about by the installation of a new torque rod, the angular position of the cam can be changed by a bolt 80.
Patent GB-1199097-A (GB)
Title: Hydrocarbon Separation Process
Inventor: WATKINS CHARLES HENRY
IPC: B01D3/14
Filed: 1968-10-08
Abstract: 1,199,097. Separating hydrocarbons. UNIVERSAL OIL PRODUCTS CO. 8 Oct., 1968 [13 Oct., 1967], No. 47552/68. Heading C5E. In a process for separating in a zone 13 a hydro-cracked effluent 11 comprising butanes and normally liquid hydrocarbons to provide an intermediate fraction 18 having a predetermined end boiling point, a light fraction 15 comprising principally butanes, pentanes, and hexanes is withdrawn from a point above the point at which the fraction 18 is withdrawn and part at least of the fraction 15 is returned to the zone 13 at 24 to a point below the point of withdrawal of fraction 18. A feedstock having a B.R. of about 38 to 566 C. is catalytically hydrogenated at (5) with recycled H 2  from a separator (9) and fed at 11, 12 to the zone 13. An example is described in which the production of a jet fuel fraction having a B.R. of about 154 to 274 C. is maximized from a blend of vacuum tar reduced crude, gas oil and light and heavy cycle oils.
Patent GB-1461761-A (GB)
Title: Mixing apparatus
IPC: B01F25/90
Filed: 1972-10-16
Abstract: 1461761 Delivering metered quantities of granular material FOSCOLOR Ltd 16 Oct 1973 [16 Oct 1972] 47664/72 Heading B1C Apparatus for delivering a metered quantity of mixed materials to a receiver for subsequent use in an injection moulding machine, the apparatus comprising a hopper 1 for each material which is connected to a respective rotary metering device 2 each having a chamber 5, one of which is preferably adjustable by way of a screw member 6 and which defines the quantity of material to be supplied to a mixer 7. The mixer has a rotary mixing blade 12 located within a hollow cylindrical member 9 which is itself rotatable in a stationary housing with an outlet 8 which directs discharge from the mixer into a receiver hopper 13 connected to the injection moulding machine 15. In operation drive means (not shown) is actuated to simultaneously and synchron ously operate the metering devices 2 to discharge appropriate quantities of material through an opening in the wall of the rotary sleeve 9 of the mixer, the materials being mixed by the rotary blade as the cylinder 9 rotates, the mixture being discharged through outlet 11, when the opening in the cylinder wall coincides therewith, into the receiving hopper 13. The movements of the various devices are operated in sequence so as to discharge regular mixed and metered quantities of material into the receiver 13. The receiving hopper is pivotably mounted such that when an appropriate amount of material has been deposited therein the hopper tilts to one side of a vertical plane, and actuates a switch 17 to stop the apparatus. Likewise when the material in the hopper has been used the hopper tilts back in the other direction facilitating the starting of the metering and mixing devices. The flow of material between the metering devices and the mixer and the receiving hopper is effected under gravity.
Patent GB-1112878-A (GB)
Title: Carriage for erecting wall elements of a building or the like
IPC: B66F9/02
Filed: 1966-10-25
Abstract: 1,112,878. Load handling machines. SKOVDE GASBETONG AKTIEBOLAG. 25 Oct., 1966 [19 Nov., 1965], No. 47768/66. Heading B8H. A trolley for handling concrete building elements comprises a guide frame 11 which is pivoted at 46 to a wheeled chassis 10 and on which sliders 30, 31 are movable under the action of a winch and cable 19. The lower slider 30 is connected by a cable 47 to the slider 31 which is provided with a clamp device for securing a building element between friction surfaces 41, 42. Releasable latches are provided for holding the frame 11 either substantially horizontal or substantially vertical. In operation, the trolley is located on the joist frame of the building and the frame 11 is turned and locked in the horizontal position. A crane transfers a building element from a lorry to the frame 11 on which it is secured by the clamp device 41, 42. The frame 11 is then released and rotates towards the vertical position during which rotation the winch cable raises the sliders 30, 31 along the frame 11. The trolley is then moved to its destination and the building element is lowered on to the joist frame by operation of the winch.
Patent GB-1372353-A (GB)
Title: Acceleration control system for gas turbine engines
IPC: F02C9/00
Filed: 1970-10-08
Abstract: 1372353 Automatic speed control. DEFENCE SECRETARY OF STATE FOR 6 Oct 1971 [8 Oct 1970] 47834/70 Heading G3R The speed of a gas turbine engine is controlled in accordance with a demand signal having a predetermined rate of increase. The rate is reduced in circumstances when the actual speed tends not to conform with the demand signal. The system shown includes a pilot lever 27 producing a speed demand signal 26 for an engine 10 in an aircraft. The signal 26 is compared with a throttle position signal 16 and with an engine speed signal 28 to form two error signals, of which the more positive is selected by a circuit 19 producing a signal 30 for energizing a motor 14 which drives a throttle valve 12. Gain adjustments are made so that the speed loop 25 dominates the position loop 22 except during idling. The speed signal 28 is also compared with a demand signal 41 to form an error signal 43 which is used to control the motor 14 if it is less positive than the signal 30. The demand signal 41 is formed by an integrating function generator (44A), Fig. 2 (not shown), energised when the signal 30 is positive, and increases at a predetermined rate during controlled acceleration. The signal 43 will thus assume control if the demand 26 is increased at an excessive rate. If the engine fails to respond to an acceleration demand, e.g. due to flame-out, the circuit 44 is energized, but the signal 41 is caused to decrease in order to prevent increasing error leading to instability. The decrease is brought about by feeding back the signal 43 in inverted form to the input of the function generator (44A). The rate of change of the demand signal 41 is compensated for altitude by a network (60), Fig. 3 (not shown), since engine speed increases with altitude for a given fuel flow. Altitude is computed in terms of air intake temperature as detected by a sensor 62, and used to calculate an independent value of fuel fow. The altitude is computed only during steady state conditions, i.e. when the error in the speed loop 25 and a throttle velocity signal 18 are both zero, and provision is made to allow for deceleration accompanied by a fall in altitude.
Patent GB-1017989-A (GB)
Title: Benzene-sulphonyl-ureas
IPC: C07D335/02
Filed: 1964-11-25
Abstract: The invention comprises benzenesulphonyl ureas of the formula <FORM:1017989/C2/1> and salts thereof, wherein R1 and R2 represent hydrogen or halogen atoms or alkyl, alkoxy, acyl, amino or acyl amino radicals, and their preparation by (a) reacting a corresponding benzenesulphonamide with a tetrahydrothiopyran - 4 - isocyanate or reacting a benzenesulphonyl isocyanate with 4-amino-tetrahydrothiopyran or an acyl derivative thereof or, if desired, using in place of the isocyanate, a compound which is converted to an isocyanate under the reaction conditions; (b) hydrolysing a corresponding benzenesulphonyl thiourea, preferably oxidatively with nitrous acid, a benzenesulphonyl guanidine preferably by alkaline hydrolysis or a benzenesulphonyl-isourea alkyl ether preferably by alkaline hydrolysis, or (c) reacting a benzenesulphonyl halide with a tetrahydrothiopyranyl - (4) - urea. Compounds wherein R1 and/or R2 are amino groups are made by hydrolysis of the corresponding acyl-amino compounds.