baber/WOPTO huggingface dataset:
Patent GB-1511421-A (GB)
Title: Process for the preparation of fatty acidmodified polyesters of low viscosity
IPC: C08G63/42
Filed: 1976-02-25
Abstract: 1511421 Preparation of low viscosity fatty acid modified polyesters DEUTSCHE TEXACO AG 25 Feb 1976 [25 Feb 1975] 07471/76 Heading C2C [Also in Division C3] The invention comprises a process for the preparation of a fattyacid modified polyester which comprises, at elevated temperature, (1) producing a polyhydric ester alcohol by adding a glycidyl ester of a monocarboxylic acid to a polycarboxylic acid or an ester polycarboxylic acid, (2) adding a polycarboxylic acid anhydride to the product of (1) to give an ester polycarboxylic acid, (3) adding an alkylene oxide or epoxyalkanol to the product of (2) or adding the product of (2) to an excess of a polyhydric alcohol to monoesterify said polyhydric alcohol and, optionally, (4) adding a polycarboxylic acid anhydride to the product of (3). The preparation of intermediates in steps (1)-(3) is described.
Patent GB-213105-A (GB)
Title: Improvements in bolt heading machines
IPC: B21K1/44
Filed: 1923-03-15
Abstract: 213,105. Etchells & Son, Ltd., D., and Etchells, D. H. March 15, 1923. Forging bolts.-A press for forging bolt heads in two stages is provided with ejectors c, c<1> for both the dies a, a'. The ejector c<1> is operated as usual by a spring pressed slide e<1> having an inclined end f<1> directly engaged by the crank-operated sliding block B which reciprocates the die-head A. The ejector c is operated by a block e, of the shape shown, rod j, and lever g having an inclined end g' engaged by the block B. The provision of the ejector c allows the cavity of the die a to be made with a quick taper.
Patent GB-651830-A (GB)
Title: Improvements in or relating to blading for turbine and like machines
IPC: F28D11/00
Filed: 1947-10-28
Abstract: 651,830. Turbine blades. POWER JETS (RESEARCH & DEVELOPMENT), Ltd., and SMITH, A. G. Oct. 28, 1947, No. 7506/50. Divided out of 651,787. [Class 110 (iii)] A turbine blade has several longitudinal cavities through which a cooling fluid is circulated and some or all of cavities contain a metal insert. The insert may be a rod 28 provided with a helical fin 29 or radial fins 30 as shown in Figs. 2 and 3 respectively. Specification 651,787 is referred to.
Patent GB-810898-A (GB)
Title: Improvements in or relating to rectifying circuit arrangements
IPC: H05B39/08
Filed: 1957-03-07
Abstract: 810,898. Rectifying. PHILIPS ELECTRICAL INDUSTRIES Ltd. March 7, 1957 [March 10, 1956], No. 7587/57. Class 38 (2). For supplying a D.C. load such as theatre lighting with current of different intensities, the change from one value to the other being made gradually, two grid-controlled high-vacuum valves 2, 3 are connected in bi-phase to a transformer 1 and have connected to their grids two circuits in parallel. These comprise respectively rectifier valves 10, 11 connected in antiparallel, in series with variable resistors 12, 13 and connected together at their other ends to a selector switch 18 which makes contact with any one of two or more tappings 15, 16 on a resistor 17 connected across the output terminals. With switch 18 connected to contact 15, capacitor 8 is charged to a comparatively low value, the grids of valves 2, 3 receive a low negative voltage and the rectifier output is high. When switch 18 is moved to contact 16, capacitor 8 is slowly charged to a higher value through valve 11, the grid voltage goes to a greater negative value, and the rectifier output slowly decreases. When the switch is reconnected to contact 15, condenser 8 discharges through valve 10, the rectifier output slowly returning to its original value. The rate of change of load current is varied by altering the value of resistors 12, 13. Abrupt change of load may be obtained by reducing one or both resistances 12, 13 to zero or short-circuiting the parallel circuits. Load intensity may be controlled'by a variable tapping on' resistor 17 (Fig. 2, not shown).
Patent GB-897403-A (GB)
Title: Method of potting a selected portion of an article of manufacture
IPC: B29C33/00
Filed: 1961-03-02
Abstract: 897,403. Potting electrical components. NATIONAL CASH REGISTER CO. March 2, 1961 [March 2, 1960], No. 7592/61. Class 87(2). A method of potting a selected portion of an article comprising a plurality of elements e.g. a contact spring set, includes the steps of clamping the elements in a removable locating jig 11, 12, forming a temporary jig 40, 41, Fig. 8, of fusible material e.g. wax about the exposed portions of the clamped elements, removing the locating jig and filling the space located thereby with an uncured resin e.g. an acrylic or epoxy resin, curing the resin, and melting away the temporary jig. In operation the elements are placed in position in notches 13 . . .16 formed between laminations held in the jig portion 12, Fig. 4 (not shown), so that by turning screws 28, 29 the elements may be clamped in position. The top jig portion 11 which has a similar clamping device is then placed in position, and the cavities 18 are filled with molten wax which is allowed to set. The jig 11, 12 is removed and the mould formed by the wax blocks 40, 41, Fig. 8, and support blocks 26, 27 is placed on a flat surface and filled with a resin which is then cured. Alternatively the bottom of the mould space may be closed by a self adhesive tape. Tubular supports 30, 31, Fig. 8 for the elements are held in position on rods 34, 35 the jigs portions 11, 12 having semicircular notches at their juncture to accommodate these supports.
Patent GB-791288-A (GB)
Title: Improvements relating to the regulation of combustion gas turbines
IPC: G05D23/22
Filed: 1955-03-15
Abstract: 791,288. Automatic temperature control systems for gas turbines. DAIMLER-BENZ AKT.- GES. March 15, 1955 [March 15, 1954], No. 7606/55. Class 38 (4). In an automatic temperature control system for a gas turbine, a thermo-electric element responsive to turbine blade temperature effects control through magnetic and hydraulic amplifiers. In one arrangement in which magnetic amplifiers control an hydraulic servo-system to operate the fuel valve, the output of thermocouples T, Fig. 6, situated at points at which they will respond, directly or indirectly, to the temperature of the turbine blades, is applied to input windings S 1  of a magnetic amplifier I output windings S<SP>1</SP> 2  of which are connected to the input windings S 1  of two separate magnetic amplifiers II, the output windings S<SP>1</SP> 2  of which energize moving coils S 5,  S<SP>1</SP> 5  acting differentially on the hydraulic servo-system, Fig. 3 (not shown). Each magnetic, amplifier is selfexcited by rectifiers associated with its output windings and has local feedback applied to windings S<SP>11</SP> 2  or S<SP>11</SP> 2 . Overall negative feedback to windings S 4  of magnetic amplifier I is obtained from a potentiometer R 4  operated by a piston (not shown) giving a transient response to pressure change in the hydraulic servosystem. Potentiometer R 4  is arranged in a bridge circuit B associated with a D.C. source W 0 . The amount of feedback is modified automatically by a resistor R<SP>1</SP> 0  adjusted with the fuel valve over part of the travel of the latter to give the system a more linear response. The operating temperature is set by adjusting a resistor Rt in circuit with D.C. biasing windings S 3  of magnetic amplifier I. These windings together with biasing windings S 3  of magnetic amplifiers II are supplied through a rectifier G 3 . A non-linear bridge circuit B<SP>1</SP> renders the biasing independent of variation in the supply voltage. Too rapid a response of the system to changes in temperature resulting from adjustment of resistor Rt is prevented by the delay resulting from the primary inductance of a transformer Tr and by the transient signal that transformer applies to input windings S 1 . Transformer Tr may be rendered ineffective by closing contacts K. A relay system for fully automatic starting and running up of the turbine is described. This system, operation of which is initiated by a push-button, also includes a tachometer generator responsive to turbine speed, indicator lamps and safety devices to prevent incorrect operation.
Patent GB-348658-A (GB)
Title: Improvements in or relating to web severing mechanism for use in the web roll renewing mechanism of printing machines
IPC: B65H19/18
Filed: 1930-02-12
Abstract: 348,658. Feeding webs. HOE & CO., Ltd., R., 109, Borough Road, London.- (Hoe & Co., Inc., R. ; 138th Street, New York, U.S.A.) Feb. 12, 1930, No. 7674. Divided on 348,648. Drawings to Specification. [Class 100 (i).] Web-roll changing devices.-A web-renewing mechanism for a printing-machine is provided with means, operable by the movement of a web roll to effect renewal, for loading or cocking a web severing device so that, when released, the severing device acts with a quick movement to sever the expiring web. The construction described is the same as that described with reference to Figs. 9-14 of Specification 348,648.
Patent GB-1319383-A (GB)
Title: Liquid dispensing apparatus
IPC: B01L99/00
Filed: 1971-03-24
Abstract: 1319383 Dispensing liquids BECTON DICKINSON & CO 21 April 1971 [29 April 1970] 7711/72 Divided out of 1319381 Heading F1R In a liquid dispensing apparatus which comprises a cartridge 48, Fig.1, having a movable piston 154, Fig.4, which is advanced by a plunger 47, Fig. 2, means are provided whereby the advance of the plunger 47 is stopped when it engages the rear face of the piston 154, and thereafter the plunger is advanced a predetermined distance to dispense a predetermined quantity of liquid. The plunger 47 is driven by a reversible motor 51 through gears 177, 176 and an internally threaded sleeve 175 which engages an external thread on the leading portion of the plunger. The advance of the plunger 47 is halted when it contacts the piston 154, by a motor stop switch 199 actuated by a push rod 198 which is movable within the plunger 47. Subsequent control of the plunger is by a cam 180 which is mounted for rotation on the sleeve 175 and has four equally spaced bumps to actuate a switch 183 to stop the motor 51 each time the gear 176 and sleeve 175 have been rotated a quarter turn. A switch 200 stops the motor 51 when the plunger 47 is retracted. Cam surfaces 192, 193 on the rear of the plunger operate respective switches 194, 195 to respectively indicate when the cartridge 48 is low on liquid, a serum as described, and when the cartridge is empty. The piston 154 has a 'QUAD" ring 155 which tends to come off the piston if the latter is retracted, to prevent reuse of the cartridge 48.
Patent GB-817302-A (GB)
Title: Infusion bag
Inventor: VERGOBBI ROBERT WILLIAM
IPC: B65D81/00
Filed: 1957-03-08
Abstract: 817,302. Tea and like infusion bags. PNEUMATIC SCALE CORPORATION Ltd. March 8, 1957, No. 7755/57. Class 94(1). An infusion bag, the seams of which are formed by heat-sealing, has the doubled end of a handle strip 16 heat sealed into the mouth seam, the strip being wound round the bag and its end 20 lightly sealed to the bag for convenience in handling prior to use. A tag 18 is heat-sealed to the handle.
Patent GB-718539-A (GB)
Title: Improvements relating to measuring devices
Inventor: SAMUELSON CHARLES FREDERICK
IPC: G01B5/14
Filed: 1952-03-26
Abstract: 718,539. Linear-dimension gauges. BRITISH THOMSON-HOUSTON CO., Ltd. March 26, 1953 [March 26, 1952], No. 7764/52. Class 106 (2) A linear-dimension gauge, Fig. 3, comprises screw means 17, 18 for moving an anvil member 8 relatively to a body member 4, a rotatable torque transmitting flexible cable 1, Fig. 1, for remotely operating the screw means 17, 18, and a micrometer head 3 connected or arranged to be connected to the end of the rotatable cable remote from the screw means 17, 18 for indicating the position or change in position of the anvil member 8 which results from rotation of the cable. As shown, the screw means comprises a worm 17 rotated by the flexible driving cable 1, and engaging a worm wheel 18 having an internal thread engaging a complementary thread on the anvil member 8 which can slide but not rotate in the body 4. For checking the alignment of cooperating surfaces, such as the rotary and stationary parts of the turbine, the gauge has at its opposite ends a pair of manipulating cables 19 and 20 for moving the gauge into the positions between the casing and shaft where measurements are to be taken. The gauge has a lower porjection 10 for sliding in a packing ring groove or a blade groove 11, Fig. 2, and surfaces 5 and 6 for engaging the surface in which the groove is formed. A packing piece 12 is secured to the projection 10 and may be changed for a packing piece of different thickness to suit the projection 10 for a groove 11 of different width. In checking the alignment of fixed and rotary parts in a multi-stage steam turbine having interstage and main packings, the check with the measuring device is carried out with the shaft 9, Fig. 1, supported in the lower half of the casing 7. After removing the packing rings and associated springs from those diaphragms and/or gland casings that are to be checked for concentricity, the cable 1 is disconnected by means 27 from the micrometer head 3. One of the manipulating cables 20 is then fed underneath the shaft 9 until it emerges on the remote side of the machine. The gauge unit is then positioned with its lower projection 10 fitting into a selected packing ring groove 11 at a point just below the horizontal division of the casing. The cable 1 is then turned until the anvil 14 off the member 8 engages the shaft 9 with the surfaces 5 and 6 of the gauge pressing against the casing. The micrometer head 3 is next set to zero and the coupling 27 is used to connect the cable 1 to the micrometer head. After turning the knob 22 to retract the anvil 14 the gauge is pulled by the cable 20 firstly to a position vertically below the shaft 9 and then to a position just below the horizontal division at the other side of the casing, At each position the knob 22 is turned until the anvil 14 engages the shaft 9 and the reading on the scale 24 is noted. Any departure from zero in either reading indicates a departure from concentricity of the turbine.
Patent GB-733352-A (GB)
Title: Improvements in or relating to electro luminescent materials
IPC: H05B33/14
Filed: 1952-03-26
Abstract: 733,352. Electroluminescent materials. GENERAL ELECTRIC CO., Ltd., HUNT, B. E., and McKEAG, A. H. March 25, 1953 [March 26, 1952], No. 7774/52. Class 39 (1). Electroluminescent zinc sulphide is activated by 0.05-5 per cent copper and 0.1-10 per cent manganese by weight of material. Precipitated zinc sulphide is mixed with about a third of its weight of zinc oxide, along with manganese sulphide, copper sulphate and zinc chloride and the whole fired for 15 hours at 850‹ C., cooled and washed with 10 per cent acetic acid to remove zinc oxide. The copper and manganese may however be introduced in two separate stages of firing with intermediate regrinding. Zinc oxide may be produced by controlled oxidation of the zinc sulphide during heating. Iron, cobalt and nickel should not be present in concentrations greater than 1 in a million. The colour of electroluminescence tends to shift towards the blue end of the spectrum with increasing frequency of exciting potential. Specification, 717,169 is referred to.
Patent GB-1494024-A (GB)
Title: Microwave device
IPC: H01P5/107
Filed: 1975-02-25
Abstract: 1494024 Coupling waveguides to microstrips PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 25 Feb 1975 [28 Feb 1974] 7799/75 Heading H1W A transition between a waveguide and a microstrip comprises a substrate 6 extending in the median plane of a waveguide parallel to the electric field, bearing an ordinary microstrip structure coupled to the waveguide by a balanced microstrip line and a balance-tounbalance transformer (balun). The substrate 6 is supported in grooves in the broad sides of a rectangular waveguide, the internal boundaries of which are indicated at 19, 20. The direction of propagation is indicated by the arrow 30. The strip line consists of a line conductor 22 and a ground conductor 21 on opposite sides of the substrate. This is coupled to a symmetrical strip line 23, 24 by a balun consisting of quarter-wave slots 25, 26 arranged in the ground conductor 21 on either side of the line conductor 22. The conductors 23, 24 of the balanced line are connected to the broad walls of the waveguide by the divergent conductive members 27, 28. The members 27, 28 and the ground plane 21 do not make conductive contact with the waveguide walls but are terminated in respective arrays 29 of quarter-wave choke slots which extend into but are insulated from the grooves supporting the substrate. The chokes ensure the necessary R.F. continuity.
Patent GB-778323-A (GB)
Title: Improvements in or relating to thread packages wound on bobbins from continuous filaments of a synthetic linear polymer
Inventor: GODDARD SIDNEY
IPC: B65H55/04
Filed: 1955-03-17
Abstract: 778,323. Spinning yarns ; bobbins. BRITISH NYLON SPINNERS, Ltd. Feb. 28, 1956 [March 17, 1955], No. 7826/55. Drawings to Specification. Classes 120 (2) and 120 (3). Yarn consisting of one or more filaments of a synthetic linear high polymeric substance showing visco-elastic properties e.g. a polyamide or polyester, immediately after a stretching operation has been performed thereon, is wound upon a cylindrical bobbin to form a package comprising superposed layers each of which extends slightly beyond the preceding layer at one or both ends of the package to produce a tapered end, the taper angle i.e. the angle between a plane tangential to, or lying along, the surface of the end portion through any point thereon and a plane parallel to the axis of the bobbin and normal to that plane which includes both the axis and the point, not exceeding 30 degrees (preferably 15-30 degrees). The bobbin may comprise a sleeve of wood, rubber, or cardboard, or an outer sleeve of hard rubber concentric with a sleeve of more compressible rubber: according to the Provisional Specification the bobbin may be elliptical in cross-section. It is stated that with the arrangement of layers according to the invention the effects of the delayed retraction of the yarn are uniformly distributed in the package. The form of the package is produced during winding by provision of a gradually increasing traverse stroke from a minimum at the start of the winding to a maximum at the completion thereof: the speed of traverse may be constant, or varied during the winding operation or each stroke and/or in proportion to the length of stroke, and the increases in the stroke may be irregular. In examples in which winding is effected by a reciprocating ring-rail carrying a traveller and coacting with a spindle mounting a single-flanged bobbin, the reciprocation varies from 5 inches to 7¢ or 8 inches, or 5“ inches to 7¥ inches over constant time cycles of from 24 to 10 seconds, to produce taper angles the maxima of which vary from 15 to 23 degrees.
Patent GB-1018568-A (GB)
Title: Starter-bar head with make-and-break joint
IPC: B22D11/08
Filed: 1964-11-30
Abstract: 1,018,568. Continuous casting-machines. UNITED STATES STEEL CORPORATION. Feb. 25, 1964 [March 6, 1963], No. 7872/64. Heading B3F. A starter bar for a continuous casting machine comprises a head 11 having a lower member 13 detachably connected to the bar 10 and to an upper member 12, said upper member 12 having means 15 which key to the casting and are detachably secured to the member 12 by keys 15a. The tongue- and-slot connection 12a, 13a between the upper and lower members 12, 13 is temporarily held together by a pin 14 for insertion of the bar into the mould, and the connection is broken by the deflector roll 22 which deflects the leading end of the casting on to a curved roller table 24, Fig. 5 (not shown).
Patent GB-416495-A (GB)
Title: Improvements in or relating to electrolytic cells
IPC: C25B7/00
Filed: 1933-03-15
Abstract: 416,495. Electrolytic cells. 1. G. FARBENINDUSTRIE AKT.-GES., Frankforton-Main, Germany. March 15, 1933, No. 7878. Convention date, March 16, 1932. [Class 41.] A cell comprises two or more coherent electrodes 3 enclosed in separate diaphragm chambers 4, the whole being enclosed withi n a single cell 1 containing finely divided soluble electrode material to which connection is made by leads 2.
Patent GB-817285-A (GB)
Title: Improvements in or relating to ceramic permanent magnets
IPC: C04B35/26
Filed: 1956-03-14
Abstract: 817,285. Magnetic compositions. GOULD, J. E., and WRIGHT, W. March 12, 1957 [March 14, 1956], No. 7900/56. Class 38 (2). An anisotropic permanent magnet is made by wetting a ferromagnetic ceramic powder with a solution or suspension in an organic liquid of a synthetic wax-like substance, evaporating off the liquid, compressing the coated powder in a magnetic field and sintering. Suitable wax-like substances are polymerized ethylene and poly-chloro-trifluoroethylene. To obtain a suitable ceramic powder, ferric oxide and barium carbonate in proportions by weight of 82 to 18 per cent, were milled in water, filtered, dried and sieved, fired at 1000‹ C. for one hour, compacted, refired to between 1270‹ and 1350‹ C. and again milled, filtered, dried and sieved. The resulting powder was added to carbon tetrachloride containing 0.5 per cent of wax sold under the Registered Trade Mark " Winnothene." The slurry was dried on a water bath. optionally in a magnetic field, sieved, fed into a die and compressed in a magnetic field. The compact was then sintered by heating at about 300‹ C. per hour to 1300‹ C., and cooled at the same rate. The proportion of barium to iron may vary over a wide range. Specifications 708,127, 726,462, and 747,724 are referred to.
Patent GB-1410293-A (GB)
Title: Process and apparatus utilizing waste material consisting substantially of phosphorus acid
IPC: C01B25/06
Filed: 1974-02-21
Abstract: 1410293 Utilizing waste phosphorous acid HOECHST AG 21 Feb 1974 [22 March 1973] 7941/74 Heading C1A Phosphorous acid contaminated with organic compounds is utilized by (a) introducing with agitation, the phosphorous acid into a liquid phase, being selected from phosphoric acids of the general formula X n+2 P n O 3n+2 , where n is between 1 and 5 such that the ratio of liquid phase: phosphorous acid is between 1 : 1 and 10 : 1, and maintained at a temperature between 250 and 400C, (b) removing resulting gases incl. PH 3  and (c) removing newly formed liquid phase at the same rate as it is being formed when a continuous process is operating. Thus, a proportion of the liquid phase is removed as H 3 PO 4  product, while the rest is recycled.
Patent GB-485701-A (GB)
Title: A chart for checking the results of football pools
IPC: A63F3/06
Filed: 1937-03-18
Abstract: 485,701. Checking competition coupons. HARPER, S. C. March 18, 1937, No. 7957. [Class 16] A device for checking the result of football pool competitions comprises a sheet of celluloid or other suitable washable material provided with a slot b of the same dimensions as one column on a pool coupon, and printed with a vertical column and horizontal divisions c and with numbers corresponding to the numbers of the matches on a coupon. The chart is preferably fitted in a folding case with a pocket for a duplicate coupon, and the chart and case may carry the name of the pool organizers and other advertising matter.