baber/WOPTO huggingface dataset:
Patent GB-914451-A (GB)
Title: Chelate complexes of ª--hydroxy acids with magnesium and other metals
Inventor: GROSSMITH FREDERICK
IPC: C07C65/10
Filed: 1959-08-10
Abstract: The invention comprises complexes of the general formula: Mx[M12(OH)yAz] where M is magnesium, aluminium, iron, sodium, potassium or the ammonium radical, M1 is magnesium, aluminium or iron, A is an a -hydroxy acid ion in chelated form, x is an integer from 1 to 5, y is zero or an integer from 1 to 8 and z is an integer from 1 to 4 and the preparation thereof either by dissolving the stoichiometric amounts of chlorides or sulphates of the metal or metals represented by M and M1 and the a -hydroxy acid or a salt thereof in water and slowly adding thereto the stoichiometric amount of an alkali metal hydroxide, e.g. sodium hydroxide, or by precipitating the hydroxides or carbonates of the metal or metals represented by M and M1, washing the precipitate free from the soluble salts and dissolving the precipitate in the stoichiometric amount of the a -hydroxy acid.  Alternatively, in the latter process, one or more of the metal hydroxides or carbonates may be replaced by the corresponding oxide or a co-precipitate of the metal salts is formed with sodium hydroxide or sodium carbonate with the optional inclusion of ammonium hydroxide or ammonium chloride, and the co-precipitate dissolved in the a -hydroxy acid.  The metal carbonates may be dissolved in the a -hydroxy acid under pressure of the carbon dioxide generated in the reaction as in the case of the formation of magnesium or magnesium-iron chelates or in the case of ironII precipitates the reaction is carried out in an inert atmosphere to avoid oxidation.  Compounds of the invention wherein M is iron are also prepared by forming the alkali metal hydroxoferrate, adding thereto a solution of the salt of the cation metal to precipitate the required ferrate and thereafter dissolving the precipitate in the a -hydroxy acid.  a -Hydroxy acids which may be used include citric, tartaric, lactic, glycolic, gluconic and salicylic acids.  Specification 905,427 is referred to.
Patent GB-1062006-A (GB)
Title: Semiconductor device with flexible lead
IPC: H01L23/02
Filed: 1965-06-29
Abstract: 1,062,006. Connecting pieces. WESTING- HOUSE ELECTRIC CORPORATION. June 29, 1965 [July 23, 1964], No. 27519/65. Heading H2E. [Also in Division H1] In a semi-conductor device (see Division H1) the solid end-piece 38 of a flexible electrical lead 40 is inserted into an electrical contact structure 30, and a collar 100 of a material having a higher tensile strength and lower coefficient of thermal expansion than the material of the structure is crimped with the structure about the end-piece. The structure 30 may be of Mo, W, Ta, Cu, Al, Ag, or a base alloy thereof. A crimped collar may also be used for the flexible lead coming out of the casing of the semi-conductor device (Fig. 4, not shown). The collar may additionally be held in place by brazing, soldering or heat sweating. The collar may be made of low alloy steel, stainless steel, high carbon heat-treated steel, Mo, W or Ta.
Patent GB-1475417-A (GB)
Title: Circuit arrangement for indicating a dc voltage
IPC: G01R19/165
Filed: 1974-06-21
Abstract: 1475417 Displays ROBERT BOSCH GmbH 21 June 1974 [22 June 1973] 27579/74 Heading G4H [Also in Division H3] In analogue-to-digital conversion the input voltage U E  is connected to one set of like (i.e. inverting or non-inverting) inputs of differential amplifiers V 1  to V n  whose other inputs receive respective different reference potentials, the output of each amplifier being connected to a respective indicator (e.g. luminescent diodes L 1  to L n  or liquid crystals or incandescent lamps in series with respective diodes). The indicators are side by side and may be connected in series as shown to give a travelling spot, the intensity (H) of each indicator varying smoothly up and then down as its range is traversed by the input voltage U E , Fig. lb (not shown). Alternatively, the indicators may be connected in parallel, Fig. 2 (not shown) to give an illuminated ribbon whose length indicates U E . An additional indicator (L w ) may be provided to warn when U E  extends a given level, Fig. 4 (not shown) or is between two given levels, Fig. 5 (not shown). This additional indicator may be pulsed, Fig. 6 (not shown). In Fig. 3 there are twice as many indicators as amplifiers, the indicators being in antiparallel pairs and threshold detector K switching over switches S 1  to S 4  when U E  exceeds the level at which indicator L n  reaches its maximum intensity, lower levels of U E  being indicated by indicators L 1  to L n , higher levels by L n+1  to L 2n .
Patent GB-500540-A (GB)
Title: Cylinder lock to be operated from both sides with an asymmetrical key
IPC: E05B27/00
Filed: 1938-09-22
Abstract: 500,540. Revolving - barrel locks. ELZETT EISENWARENFABRIK AKT.- GES. Sept. 22, 1938, No. 27612. Convention date, Feb. 18. [Class 44] In a revolving-barrel lock operated from either side by an asymmetrical key so that at least. two tumbler pins co-operate with different key depressions when the key is reversed, some of the pins consist of more than two parts so as to be released by depressions of different depths. Where the bolt tongue lies between the tumblers, as, shown, there need be only one pin such as the second or third with more than two parts. With a three-part pin 1a .. 1c in engagement with a depression 9, part 1b rotates with the cylinder 5, but when it engages a depression 10 on reversing the key 4, part 1b is held stationary.
Patent GB-788252-A (GB)
Title: Improvements in or relating to the introduction of helical inserts into tapped bores
Inventor: STEPHENS RONALD BERTRAM
IPC: B25B27/14
Filed: 1955-09-29
Abstract: 788,252. Screwing. ARMSTRONG PATENTS CO., Ltd. May 8, 1956 [Sept. 29, 1955], No. 27699/55. Class 83 (3). A guide for inserting a helical wire-thread insert I, Fig. 6, into a tapped hole of smaller diameter in a workpiece W, comprises a tubular body 12, Fig. 4, with an enlarged knurled portion 13 to facilitate handling, a screwed bore 11 of the same size as the tapped hole, and a helical end face 15 with an undercut 18 at the start of the helix to facilitate entry of the insert. The face of the undercut is oblique with respect to a radius. The insert is turned by a mandrel M having a slot 32 engaging a diametral end 31 on the insert.
Patent GB-653788-A (GB)
Title: Improvements in automatic control systems for television receivers
IPC: H04N5/18
Filed: 1948-10-25
Abstract: 653,788. Automatic gain control. HAZELTINE CORPORATION. Oct. 25, 1948, No. 27712. Convention date, Dec. 13, 1947. [Class 40 (v)] [Also in Group XL (b)] In a television receiver a peak rectifier is utilized to derive a voltage proportional to the mean black level, for which purpose a control voltage is applied to its anode causing it to be disabled for the duration of each synchronizing impulse. The voltage so derived may be used for automatic black-level stabilization (see Group XL (b)), or gain control ; in the latter case a peak rectifier comprising a diode 56 is connected across the output of a videofrequency amplifier 51 which is direct-coupled to the signal detector 50. The anode of the amplifier 51 is brought to a suitable potential by returning the cathode to a negative point, and its output includes the video and synchronizing signals poled so that the synchroning impulses are negative-going. The diode 56 is disabled for the duration of each synchronizing impulse by means of an overriding negative pulse which is applied to its anode from the synchronizing-signal separator (not shown) over lead 60. The potential to which the condenser 59 is charged, and which constitutes the automatic contrast-control voltage then corresponds to the most negative part of the remaining signal, i.e. the black level. Specification 534,718, [Group XL (b)], is referred to.
Patent GB-839302-A (GB)
Title: Improvements in and relating to acetylene generation
IPC: C10H15/02
Filed: 1958-08-29
Abstract: <PICT:0839302/IV (b)/1> A continuous process for producing acetylene comprises feeding together a continuous supply of calcium carbide and a first supply of water into a first reaction zone, regulating the rate of carbide feed in automatic response to a selected condition which is dependent on the rate of acetylene generation to provide a controlled rate of generation of acetylene, continuouly adding a second supply of water to the charge in a quantity in automatic response to changes in the temperature of the product gas to produce a residual hydrated lime of substantially uniform moisture content and continuously removing the gas and hydrated lime.  In a preferred embodiment based on the apparatus shown in Specification 610,546 carbide is fed from a hopper I by means of a screw 2 to a zone A of three drum generator chambers 3, 4, 5, and then over partition walls 9, 10 and 11 through zones B, C and D. A water supply line 12 provides the first supply of water, and supply line 13 the second water supply.  The gaseous products are removed through a line 7 and the hydrated lime is withdrawn through a channel 8.  A manually adjustable valve 21 regulates the flow in the first water supply line 12.  A measuring and transmitting means 25 in line 7 responds to temperature changes in the gas discharged from the generator and operates a controller 26 which in turn controls valve 27 in the second supply line 13.  A direct acting relay 31 responsive to the measuring means 22 completely closes valve 28 whenever the gas production has fallen below a pre-selected value.  Specification 559,198 also is referred to.
Patent GB-1090551-A (GB)
Title: Detecting volatile organic contaminants in re-usable containers
IPC: G01N1/22
Filed: 1965-06-30
Abstract: 1,090,551. Gas analysis. P. A. SMITH (National Distillers and Chemical Corporation). June 30, 1965, No.27782/65. Headings G1B and G1N. Organic contaminating vapours e.g. gasoline are detected in open ended containers such as milk bottles by drawing a sample of the atmosphere inside a bottle (not shown) through a tube 11 to a detector cell 10 of the hydrogen flame ionization type. The bottles pass along a conveyer and a pneumatic control system is provided to stop the bottles in succession, to insert and withdraw the tube 11 from each bottle and then to release the bottles to pass further along the conveyer. The tube 11 opens into the cell 10 and air is continually drawn through the cell by a pump (not shown). The cell is provided with an electrically conductive tube 55 having an orifice 57 at which a small hydrogen flame continually burns. An igniter coil 63 and thermocouple 65 are provided to ignite the flame and sense its presence respectively. An electrically conductive ring 58 is provided in the cell 10 above the hydrogen flame, and a polarizing potential is maintained between the ring 58 and pipe 55. If organic vapours from a contaminated bottle enter the cell. The carbon atoms from organic substances give rise to ions which migrate between the electrodes formed by the pipe 55 and ring 58 giving rise to small electrical current which is fed to an amplifier and which may subsequently be used to control relays in a bottle rejection mechanism.
Patent GB-1304339-A (GB)
Inventor: REICHMAN S H
IPC: C22C1/04
Filed: 1971-06-14
Abstract: 1304339 Sintered-carburised Ni base superalloys FEDERAL-MOGUL CORP 14 June 1971 [10 July 1970] 27847/71 Headings C7D and C7U] Sintered Ni based superalloys are made by compacting the alloy powder which contains less than 200 ppm O 2  and less than 700 ppm C, annealing the compact to effect grain growth, and then carburising the compact to form carbide at the grain boundaries which prevents further grain growth. The powdered alloy particle size 1-250 microns is preferably made by atomising a melt in an inert atmosphere such as A or He. Compaction may be by extrusion, vacuum die pressing, hot upsetting isostatic pressing or explosive pressing and the powder may be pre-heated to 1900-2500F. Preferably the powder is sheathed in steel or stainless steel, evacuated and hot extruded in an inert gas. Alternatively the powder may be pre-compacted and vacuum sintered. The compact may be further shaped prior to annealing at 2200-2400F. Carburisation is preferably effected at a temperature less than half the  absolute melting temperature of the alloy e.g. at 1400F in a gas mixture of 10% natural gas and 90% H 2  to increase the C content to 500-2000 ppm. A final solution heat treatment may be effected at 2000-2300C.
Patent GB-185981-A (GB)
Title: Improvements in sliding windows for use on motor vehicles
IPC: E05F11/38
Filed: 1921-10-20
Abstract: 185,981. Armstrong Siddeley Motors, Ltd., Menzies, J. L., and Caswell, B. Oct. 20, 1921. Holders for sliding windows.-A jaw F fixed to the window engages a twisted rod G which rotates during the movepressed detent J engaging a ratchetment of the window, and the latter may be held against movement in one direction by a spring- wheel H on the rod.
Patent GB-1018324-A (GB)
Title: Transverse wave beam coupling apparatus
IPC: H01J25/49
Filed: 1962-07-19
Abstract: 1,018,324. Electron beam parametric amplifiers. S-F-D LABORATORIES Inc. July 19, 1962 [Aug. 2, 1961], No. 27861/62. Heading H1D. A beam coupler for transferring signal wave energy between a beam and a circuit in a parametric amplifier has a pair of mutually opposed conductive portions disposed on opposite sides of the beam path, the conductive portions having an extent in the direction of the beam which is less than 20% of the cyclotron wavelength. The conductive portions may be pins which extend into a resonant cavity which is coupled by an iris to an input waveguide. Several such pairs of pins may be provided, Fig. 11 (not shown), arranged in a twisted array, the rate of twist being such as to compensate for the twisting ribbon-shaped beam. Alternatively, Fig. 12 (not shown), a pair of meanderline circuits are disposed straddling the electron beam axis, the innermost edge portions being disposed in transverse registry.
Patent GB-798234-A (GB)
Title: Improvements in or relating to catalyst manufacture
IPC: B01J21/04
Filed: 1955-09-30
Abstract: Catalytic pellets are moulded from a mixture comprising: (a) a finely divided inorganic oxide at least potentially active but in non-gelatinous form selected from alumina, beryllia, zirconia, thoria, silica and combinations thereof; (b) colloidal silica; and (c) a water-soluble metal salt decomposable by heat into the metal oxide of the above group, the decomposition of said salt being carried out after moulding said pellets.  The colloidal silica is preferably employed so that the pellets contain 2 to 8 per cent. of silica by weight, and the silica has an average size in the range of 10 to 150 millimicrons.  The pellets are made preferably from a finely divided inorganic oxide which has a specific surface of at least 60,000 cm.2/cm.3.  Among the elements which may be deposited upon this catalytic bases are platinum, palladium, ruthenium, nickel, copper, cobalt, chronium and silver.  U.S.A. Specifications 2,574,902 and 2,577,485 are referred to.
Patent GB-894840-A (GB)
Title: Portable stapler with pneumatic drive and return
IPC: B25C1/04
Filed: 1959-08-17
Abstract: 894,840. Stapling machines. SENCO PRODUCTS Inc. Aug. 17, 1959 [April 27, 1959], No. 28089/59. Class 89(3) A fluid-pressure actuated device, e.g. a stapling machine, comprises a piston 36, Fig. 1, slidable in a cylinder 27 and held in a retracted position by means independent of the pressure-fluid, e.g. a permanent magnet 35 or a spring-pressed detent. A pilot valve 52 is moved by a trigger 46 to supply pressure-fluid, e.g. compressed air, from a source via pipe 26 and chamber 25 to raise a piston 56 thus closing exhaust port 64 and opening main valve 58 to apply air above piston 36. When the pressure overcomes the magnet &c., the piston is driven to abut a buffer 31, moving the air beneath the piston into a reservoir 42. Ports 44 controlled by non-return valves 45 are now above the piston and open to apply sourcepressure to reservoir 42. On release of the trigger, the space above the piston is exhausted via port 64 and passage 63 and the pressure-fluid in the reservoir raises the piston until it is engaged by the magnet &c. The driving blade 37 of the machine controls an exhaust port for the space below piston 36, closing same as soon as the piston commences to drive and opening same when the piston is restored against the magnet. Staples are supplied from a magazine 24. In a modification, the piston is held in the restricted position by a spring-arm 76, Fig. 12. In other arrangements the reservoir comprises an external pipe 42c, Fig. 8, or a tube 42a, Fig. 7, parallel to the reservoir.
Patent GB-195113-A (GB)
Title: A process to facilitate classification of mineral particles and to reduce losses in ore dressing, by the aid of chemical substances
IPC: B03D3/00
Filed: 1922-09-14
Abstract: 195,113. Smythe, R. H. Sept. 14, 1922. No Patent granted (Sealing fee not paid). Treating ores to facilitate concentration.-In the classification of ores, slimes, and mineral particles according to weight prior to concentration by flotation or by means of buddles, vanners, or other separating plant, the materials mixed with water are caused to flow through launders into which a mineral salt such as aluminium or magnesium sulphate and hydrate of calcium or ammonium are introduced. The insoluble gelatinous aluminium or magnesium hydrate so formed binds together the finer particles and the stream is then caused to enter the first of a series of settling tanks. The heaviest particles sink in the first tank and the overflow passes successively into the remaining tanks in which the particles sink according to weight. A dilute acid such as sulphuric, hydrochloric, nitric, or acetic acid is then added to each of the tanks. This dissolves out the excess hydrates and liberates the particles in such a condition that they can be easily concentrated, the contents of each tank being treated separately.
Patent GB-425557-A (GB)
Title: Improvements in and connected with devices for guiding cloth and other webs transversely into machines
IPC: B65H23/02
Filed: 1933-10-12
Abstract: 425,557. Feeding webs. BROWN, A. S., 9, Carlaverock Road, and DALGLISH, J., Avenue Iron Works, Pollokshaws, both in Glasgow. Oct. 12, 1933, No. 28151. [Class 100 (i)] A device for guiding cloth and other webs transversely into machines without tension in the weft or the warp has a nozzle A and an aligned pipe D arranged at each selvedge, the pipe being coupled to a diaphragm chamber G so that a stream of air passing from the nozzle into the pipe acts on the diaphragm H, the interruption of this stream by either selvedge causing a correcting movement to be applied to grinding rollers 1, 2 connected to the diaphragm. The rollers may grip the cloth U continuously and be turned against the action of a spring or they may be at a fixed angle to the cloth but only in contact when held together by the air pressure on the diaphragm. In Fig. 2, a roller-carrying bracket Q is swivelled about a vertical axis against a torsion spring by a rod N pivoted to a lever M connected by a rod L to the rubber diaphragm H. The fulcrum O of the lever is adjusted by a screw W. Spring-pressed bearings hold the lower roller against the upper one. The pipe D and nozzle A are both mounted in a bracket B connected to a main body F in which the bracket Q is pivoted and to which the chamber G is attached. The diaphragm is clamped by a cover J an inlet T in which is connected by a flexible pipe to the pipe D. The chamber G has a vent hole V.
Patent GB-956333-A (GB)
Title: Improvements in information signal storage device
IPC: G11C19/08
Filed: 1962-07-23
Abstract: 956,333. Magnetic storage devices. AMPEX CORPORATION. July 23, 1962 [Aug. 4, 1961], No. 28311/62. Heading H1T. [Also in Division H3] An information storage device comprises a thin magnetic film 12 having successive storage areas 16a, 16b, 16c which correspond to a repetitive pattern of coercive force variation so that an applied field can produce a clearly defined domain wall at the edge of a storage area where there is a sudden change in coercive force. In the embodiment of Fig. 1 this variation in coercive force is produced by a sawtooth variation in thickness but a stepped or isosceles triangular cross-section may be used (Figs. 2 and 3, not shown). In another embodiment (Fig. 4, not shown) two materials are used to form the film, one having a high coercivity and the other a low one. In operation a switching field is applied which increases in intensity across the film as shown in Fig. 5B so that only the first storage area is switched, the variation in coercive force producing a straight domain wall which is then passed down the film by gradually increasing the field. A wedge shaped conductor 20 may be used to produce the switching field and readout is obtained by means of induced voltages in a conductor 22. Alternatively the magnetic state may be read by means of polarised light. The film may be formed by depositing a vapour and the shape produced by masking or selective etching.
Patent GB-948561-A (GB)
Title: Benches for the manufacture of large building panels
IPC: B28B7/42
Filed: 1962-07-24
Abstract: 948,561. Moulds for manufacture of large building panels. R. F. E. CAMUS. July 24, 1962 [Aug. 9, 1961], No. 28363/62. Heading B5A. Large concrete buiding panels &c. are manufactured in a mould supported horizontally in such a way that relative horizontal movement between the mould and the supports may occur only when the mould expands or contacts upon heating or cooling. The mould bottom T, adapted to be heated by pipes C, is urged into contact with the upper flange 20 of the I-shaped support by the draw bars 27, 28 which are affixed to the underside of the mould bottom either by nuts 21, 22 as shown in Fig. 2, or by brackets 38, which are welded to the underside of the mould bottom and in which there is a slot 44 which co-operates with the enlarged head of the draw bar. The bottom end of the draw bars engage the plate 31 (Fig. 3, not shown) which bears against the lower flange 33 of the support, by means of nuts 29, 30 and Belleville washers 35, 36 or the like. The mould bottom is thus drawn down on to the supports by the draw bars with a force which may be adjusted so that relative movement between said members only occurs upon expansion or contraction of the mould bottom. Lateral movement of the mould bottom upon successive expansions and contractions is limited by stops 51, 51<SP>1</SP> co-operating with outer support members 48, 48<SP>1</SP> as in Fig. 6 (not shown).