baber/WOPTO huggingface dataset:
Patent GB-1260120-A (GB)
Title: Process for the preparation of transition metal complexes
Inventor: THOMPSON DAVID THOMAS
IPC: C08G79/14
Filed: 1968-03-18
Abstract: 1,260,120. Transition metal complexes. IMPERIAL CHEMICAL INDUSTRIES Ltd. 6 March, 1969 [18 March, 1968], No. 13010/68. Addition to 1,129,554. Heading C2P. Dinuclear or polynuclear complexes of transi - tion metals in which at least one of the metals is different from the other or others are obtained by reacting (1) a transition metal complex having one or more ligands which contain or consist of a halogen atom or atoms with (2) a transition metal complex having one or more ligands which contain or consist of a hydrogen atom or atoms so as to form the dinuclear or polynuclear complex with the elimination of a hydrogen halide, the metals being selected so that at least one metal atom in the product is different from the other or others. The transition metals are defined as being metals of atomic numbers 23 to 28, 41 to 46 and 73 to 78. Halogen ligands specified are chloride, bromide, and iodide and dihydrocarbyl halo-phosphines, -arsines or -stibines and hydrogen ligands may be hydrido ligands or dihydrocarbyl-phosphine, -arsine or -stibine ligands. The complexes may be reacted together in a solvent, e.g. an ether or an aromatic solvent, e.g. tetrahydrofuran or benzene, and the reaction should be conducted in the absence of air, e.g. by using an atmosphere of nitrogen. Examples are given for the production of complexes by reaction of (1) to (4) dimeric chlororhodium dicarbonyl with diphenylphosphine iron tetracarbonyl, diphenylphosphine chromium pentacarbonyl, diphenyl-phosphine molybdenum pentacarbonyl, and diphenyl phosphine tungsten pentacarbonyl respectively, (5) IrCOCl(PPh 3 ) 3  and diphenyl phosphine iron tetracarbonyl, (6) IrHBr 2 CO(PPhEt 2 ) 2  and diphenyl phosphine iron tetracarbonyl and (7) bis(diphenylphosphine dicobalt hexacarbonyl and manganese pentacarbonyl bromide. The complexes are useful as catalysts, e.g. for hydrogenation and polymerization.
Patent GB-623530-A (GB)
Title: Push block assembly for earth scrapers
IPC: E02F9/00
Filed: 1947-05-14
Abstract: 623,530. Earth scrapers. LETOURNEAU, Inc., R. G. May 14, 1947, No. 13028. Convention date, May 15, 1946. [Class 68 (i)] Additional assistance is given in the loading of a bowl-type earth scraper 1 by a bulldozer 8 pushing from the rear. The bulldozer blade 9 contacts two push blocks 6, 7 mounted on a heavy-duty cross-beam 5, which is supported by side beams so forming a rigid framework 2 that is secured to the scraper and projects beyond the rear wheels 4. The blocks are disposed on either side of the centre line of the scraper in alignment with the side beams.
Patent GB-549261-A (GB)
Title: Improvements in and relating to machanical brake mechanism
IPC: F16D65/28
Filed: 1941-10-10
Abstract: 549,261. Spring and weight applied brakes. BRITISH THOMSON-HOUSTON CO., Ltd., and PETCH, T. H. Oct. 10, 1941. No. 13067. [Class 103 (i)] Braking mechanism, wherein the braking effect is produced by the combined action of a spring and a weight, is so arranged that when the spring is exerting its greatest effect the weight is exerting its least effect. The brake lever 1 is moved to apply the brakes by a spring 9, which is pre-compressed and the weight 17 is carried on a nearly vertical arm of a bellcrank lever having the other arm connected by a pic-and-slot mechanism to a lever 11 pivoted on the brake-lever 1. Normally a brake-engine 4 holds off the spring 9, or a thruster or solenoid may be used. When the brake is applied the spring 9 has expanded and the weight-carrying arm is nearly horizontal.
Patent GB-1223775-A (GB)
Title: Method of strengthening glass of thin dimension
IPC: C03C21/00
Filed: 1969-03-12
Abstract: 1,223,775. Strengthening thin glass. NIPPON SHEET GLASS CO. Ltd. 12 March, 1969 [16 March, 1968], No. 13129/69. Heading C1M. An alkali-metal-containing glass of thickness not exceeding 1.3 mm. is strengthened by treating in a first stage with a molten alkalimetal salt whose alkali-metal ions are larger than those of the glass, and in a second stage contacting one surface only of the glass with a molten alkali metal salt whose ions are larger than those originally in the glass and simultaneously applying a D.C. voltage between the salt (which acts as the anode) and the other surface of the glass. Both stages are carried out below the deformation temperature of the glass. Preferably in the first stage a sodium glass is immersed in molten KNO 3  at 380-180‹ C. for at least 15 minutes, and in the second stage is contacted with a bath of molten KNO 3  at 350-480‹ C. for 2-030 minutes at a D.C. voltage of 10-200V. For improved electrical contact a molten metal or salt may contact the other surface of the glass. The glass body being treated may be reversed so as to treat both sides. In the second stage of the described embodiment a watch glass 1 contacts KNO 3  4 in a stainless steel vessel 2, while KNO 3  6 in a porous graphite pot 5 acts as the cathode.
Patent GB-682321-A (GB)
Title: Improvements in or relating to single and multi-ring check valves
IPC: F16K15/12
Filed: 1949-05-17
Abstract: 682,321. Springs. DIENES, L., (trading as DIENES, K. R., and KOHLER, R.). May 17, 1949, No. 13169/49. Class 108 (iii). [Also in Group XXIX] A loading spring arrangement for a ring check valve comprises annular, coned, springs 52 and alternate flat springs 53. The lowermost coned spring 52a is of smaller outer diameter than the others to engage the valve ring 56 between the inner and outer diameters of its seat 58. The valve ring 56 and the springs are guided by members 54. Fig. 4 illustrates a spring for a valve of the kind having two concentric annular or part-annular ports, the outer and inner parts 59, 61 of the spring corresponding with the ports and the intermediate arcuate slots corresponding with ports in the valve ring. Radial slots 62 are formed to reduce the rate of the spring in the initial stages of its deflection. Instead of inwardly extending radial slots, slots extending outwardly from the arcuate slots may be provided. A hole 65 is engaged by a fixed pin to locate the spring. Fig. 6 shows a spring slotted to suit a valve with three concentric annular or part-annular ports, whilst a further form is described adapted for use with a valve having four annular or partannular ports.
Patent GB-259499-A (GB)
Title: Improved apparatus for a simultaneous punching and cutting of pocket-knife springs
IPC: B21D53/88
Filed: 1926-05-25
Abstract: 259,499. Roeger, A., Roeger, F., and Longerich, W. May 25, 1926. Springs.-A device for simultaneously punching and cutting the ends of a pocket-knife spring g comprises a lower part a having cutters c, a guide d for the punch, and a work-positioning abutment e, and an upper part b carrying the punch f and counter cutters h. The device is used in a press. An abutment may be provided in place of one pair of cutters c, h when one end only of the spring is to be cut, and two or more punches may be used where more than one hole is to be made or the spring is to be notched.
Patent GB-290286-A (GB)
Title: Electron discharge device structure and method
IPC: H04B1/16
Filed: 1928-05-04
Abstract: 290,286. Miessner, B. F. May 13, 1927 [Convention date]. Void [Published under Sect. 91 of the Acts]. Vacuum tubes.-In order to prevent hum due to unsteady heating current the filament of a valve for use as a detector or amplifier is made of high thermal capacity and adapted to give sufficient emission of electrons at a dull red or difficulty-visible red heat. The filament is preferably straight and of large diameter, for example 0.75-1.25 inch in Length and 4.5-9 mils. in diameter, the heating current being 1.25 ampere at a voltage of 0.9. It may consist of a platinum-nickel wire coated with oxides of strontium and barium. As shown in Fig. 2, the filament 10 is surrounded by a grid 11 in the form of a fiat coil, and by an anode 21 consisting of two plates secured to supports. Curves are given showing how the anode current is affected by (a) the diversion of electrons from one part of the filament to another, and (b) changes in filament temperature and consequent fluctuations in electron emission. The two effects balance one another as explained in Specification 272,887. Two or more filaments may be mounted in parallel. The arrangement shown in Fig. 7 consists of two high-frequency stages 50, 51, a detector valve 52 and two stages 53, 54 of low frequency. The filaments of the valves 50 - - 53 are supplied from a secondary 100 of a transformer 90, and the filament of the valve 54 from another secondary 101. The high tension supply is provided by a third secondary 104 through a rectifier 106 and a filter 112, 111, the anode of the valve 54 being connected through a choke 83 with the end of a resistance 115 across the supply and the anodes of the other valves with an intermediate point of the resistance. Adjustable grid bias is provided by resistances 136, 137 between the grids and potentiometers 133, 130. In order to prevent coupling between the valves a condenser 140 of high capacity is shunted across the resistance 136, condensers 160 are connected between the grid and filaments of the valves 50, 52, and high resistances or choke coils are connected between the tuning circuits of the valves 50, 51 and the negative lead 141. Specification 256,994 also is referred to.
Patent GB-937112-A (GB)
Title: Door furniture
IPC: E05B3/06
Filed: 1961-04-13
Abstract: 937,112. Door handles. E. HOLDEN & CO. (B'HAM) Ltd., and E. J. HOLDEN. April 13, 1961, No. 13249/61. Class 44. A self-centring arrangement for a handle 10 includes a flat spirally wound spring 16 disposed within a recess formed in a star lock washer 15 which has abutments 151a, 151b to limit the movement of the handle. The cylindrical boss 101 of the handle is mounted in a nylon bush 12 and projections 153 pressed out from the washer 15 hold the spring in place.
Patent GB-551134-A (GB)
Title: Improvements in and relating to means for registering or counting vehicles such as railway wagons passing a fixed point
IPC: B61L1/16
Filed: 1941-10-16
Abstract: 551,134. Counting-apparatus. HALL, J. F. Oct. 16, 1941, No. 13343. [Class 106 (i)] A device for counting vehicles such as railway wagons passing a fixed point comprises a base a on which is mounted a counting mechanism c and a lever mechanism for actuating the counter under control of the leading axle of the passing vehicles. The counter operating lever d is connected by a link e to a lever g normally held in the vertical position. The lever g is connected by a link h to a lever i arranged a distance ahead of the lever g rather greater than the wheel base of the vehicles. On the passage of a vehicle the lever g is rocked to the position shown to operate the counter and the lever i is raised into the path of the leading axle and when this position is reached the lever i is rocked to return the lever g to vertical or active position for the next vehicle. Cams s on either side of the lever i co-operate with a pair of spring controlled levers m to maintain the lever i in one or other of its adjusted positions. A ratchet device may be interposed in the drive to the counter so that vehicles passing in one direction only will be counted. Alternatively the upper parts of the levers g and i may be formed with one way or stop hinge joints for this purpose.
Patent GB-133863-A (GB)
IPC: B60B25/00
Abstract: 133,863. Haanel, B. F. C. Jan. 14, 1919. Tyre attachments to rims.-The two parts A, B of a divisible rim are held together by a pivoted latch 15 with a partially circular projection 14 on one part B engaging a semi-circular notch 13 on a projecting tongue 10 on the other part A. A stop piece 11 for engagement with the tongue 10 is secured to the part B. Detachable-rim attachments to wheels.-The rim is secured between a stop flange 30 on a bonding ring D and a detachable ring E having wedge surfaces 31 at intervals adapted to be forced between the rim and the ring D. The detachable ring E is secured by dogs 32 which allow the removal over them, when turned inwards, of the ring. Coacting wedge surfaces on the ring and dogs are provided.
Patent GB-290832-A (GB)
Title: Improvements in or relating to safety devices for explosive blasting cartridges
IPC: F42D5/06
Filed: 1927-05-19
Abstract: 290,832. Karollus, E. May 19, 1927. Blasting.-A tool for with-drawing plugs from bore-holes is made with a main spiral part h as usual, but a shoulder k, Fig. 7, is formed near the end thereof, or a small spiral extension l, Fig. 6, is added separated by a gap m from the main spiral part h, the object of these constructions being to limit the insertion of the tool into the plug, the tool being arrested when the shoulder k or the gap m reaches transverse pieces in a recess in the top of the plug.
Patent GB-272835-A (GB)
Title: Manufacture and production of valuable liquid and other hydrocarbons and derivativesthereof from natural oils, bitumens and the like
IPC: C10C1/20
Filed: 1926-04-14
Abstract: 272,835. I. G. Farbenindustrie Akt.- Ges. April 14, 1926. Addition. to 247,582. Hydrogenation, destructive. - The process of hydrogenizing carbonaceous materials in presence of added combined nitrogen as described in the parent Specification and in Specification 250,948 is applied to the treatment of conversion or hydrogenation products of mineral oils and bitumens, e.g. acid sludge, cracked products, or hydrogenated derivatives thereof.
Patent GB-437951-A (GB)
Title: Improvements in the manufacture and production of azo dyestuffs
IPC: C09B29/02
Filed: 1934-05-04
Abstract: Azo dyes are made by coupling the diazo compound of a nitrated o-aminophenol having one or more nitro groups of which one is in p-position to the amino group and containing, if desired, any further substituents but no SO3H or COOH with a N-hydroxyalkylated derivative of m-toluidine which contains a further alkyl or hydroxyalkyl group attached to the nitrogen atom. They dye cellulose esters and ethers in bluish red shades fast to light and washing and may be used for colouring resin and nitrocellulose lacquers.  The following dyes are described: 5-nitro-2-aminophenol --> N-hydroxyethyl-N-methyl- or ethyl or N-n-butyl - m - toluidine, N - dihydroxyethyl - m-toluidine. Other components specified are 5-nitro-4-chloro-2-aminophenol and 3-amino-6-nitro-4-cresol; N-dihydroxypropyl-N-ethyl-m-toluidine. British Specifications 251,155, 274,823, 292,180, [all in Class 15 (ii)], and U.S.A. Specification 1,948,208 are referred to.
Patent GB-549276-A (GB)
Title: Improvements in and relating to protective systems for electric circuits
IPC: H02H7/16
Filed: 1941-10-23
Abstract: 549,276. Protective arrangements. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 23, 1941, No. 13620. Convention date, Oct. 26, 1940. [Class 38 (iv)] A circuit element, such as a series condenser 4, is protected against high voltages by a shunt connected device inherently responsive to voltages in excess of the safe operating voltage of the element and this device, e.g. an arc gap 5, is caused to operate by serially connected inductance 8 and, capacitance 7 connected across the element and resonant at its operating frequency. The voltage of at least one of these reactances which, on account of resonance, is greatly in excess of the normal voltage across the circuit element, is applied directly or indirectly to the protective device. Fig. 1 shows the voltage applied to an auxiliary electrode 6 of the gap; a relay 10 may short circuit the gap when it operates. In modifications the voltage is stepped up further, as by a secondary winding on the inductance 8 or by an oscillatory circuit containing an auxiliary gap and comprising the capacitance. The secondary winding may be connected across auxiliary gaps below the main gap, with or without a blow out coil to assist the ionization of the main gap by the rising auxiliary discharge. A rheostat 9 may be included in the resonant circuit and may adjust the voltage derived from the reactances 7, 8.
Patent GB-810422-A (GB)
Title: Improvements relating to the casting of metal with the use of exothermic materials
IPC: B22D7/10
Filed: 1955-05-11
Abstract: 810,422. Ingot moulds. DOITTAU PRODUITS METALLURGIE. May 11, 1955 [Oct. 21, 1954], No. 13623/55. Class 83 (1). In a method of casting ingots, the upper part of the mould 1 is lined with exothermic material 8 which is separated from the molten metal by a layer of inert material 7. The exothermic material is separated from the feed-head frame 6 by an air-gap 9. The materials 7, 8 are formed in slabs. The exothermic material may increase in thickness from top to bottom, and may be contained in recesses in a sand slab 7 or wholly within the slab, the combustion gases escaping through vents 16, Fig. 3. In the latter cases, the exothermic material extends only between the limits 10, 11 of the molten and the solidified ingot. Specification 808,839 is referred to.
Patent GB-171422-A (GB)
Title: Improvements in or relating to a process and apparatus for drying fish, fruit and the like
IPC: F26B15/04
Filed: 1920-05-18
Abstract: 171,422. Noseworthy, J. May 18, 1920. Rotary supports; air, controlling temperature, humidity, and direction of flow of.-Relates to a process and apparatus for drying fish, fruit, &c. of the kind in which the material is supported upon a rotary device within an enclosure and dried by currents of hot air, and consists in passing the material intermittently into the direct line of a drying or cooling air steam flowing horizontally and diametrically across the enclosure. As shown, the material is placed in perforated trays mounted upon carriages which are run from the position 7 on to a rotary platform in an enclosure 13. The enclosure is formed with diametrically opposite air inlet and outlet openings 18, 19 respectively. The air is drawn through the heating or cooling chamber 17 and forced across the enclosure by the fan 15.
Patent GB-640924-A (GB)
Title: Improvements in or relating to surface active agents and process of making same
Filed: 1947-05-21
Abstract: Surface active agents are prepared by reacting unsaturated aliphatic nitriles having at least ten carbon atoms with a sulphonating agent such as sulphuric acid, fuming sulphuric acid, sulphur trioxide and chlorosulphonic acid.  The nitriles may be sulphonated (or sulphated) alone or in mixtures with other materials capable of sulphonation such as free oleic acid, oleic acid esters or castor oil. Sulphonation may be effected in the presence of alcohols such as ethyl or butyl alcohol, ethers such as ethyl ether or dioxane and low molecular weight aliphatic acids such as acetic acid.  Preferably, a nitrile of an unsaturated fatty acid or a mixture of such fatty acids, consisting desirably of oleic or elaidic acid, generally having 10 to 36 carbon atoms and only one unsaturated bond, is treated with at least 75 per cent sulphuric acid at a temperature not exceeding 40 DEG  C. for a 1/2 to several hours, the product then being neutralized with caustic soda solution and heated, whereupon a concentrated solution of the sodium salt of the sulphonated nitrile separates. An example illustrates this method applied to oleonitrile. Other alkali metal salts, ammonium salts and water-soluble aliphatic amine salts such as those of mono-, di- and tri-ethanolamines, morpholine and diethylene triamine may be prepared likewise.  The Specification as open to inspection under Sect. 91 refers to the sulphation or sulphonation of aliphatic nitriles generally and in particular those having from 10 to 24 carbon atoms and to phosphated and borated aliphatic nitriles.  This subject-matter does not appear in the Specification as accepted.ALSO:Materials useful as detergent, finishing, softening, wetting and re-wetting agents comprise the sulphated or sulphonated nitriles obtained by reacting unsaturated aliphatic nitriles having at least 10 carbon atoms with a sulphonating agent, or the alkali metal, ammonium, the mono-, di-, and tri-ethanolamine, morpholine, diethyline triamine or other water-soluble aliphatic amine salts of these sulphonated nitriles (see Group IV (b)).  The sulphonation may be effected in the presence of alcohols, ethers and low molecular weight aliphatic acids such as ethanol, butanol, ethyl ether, dioxane and acetic acid and in the presence of materials capable of being sulphonated such as oleic acid and its esters and castor oil.  The preferred nitriles are derived from fatty acids having 10 to 36 carbon atoms or mixtures thereof, mention being made of oleic and elaidic acid.  The active materials are effective under acid and alkaline conditions and are stated to be more resistant to hydrolysis and more effective as wetting agents at pH values above 7 than the corresponding sulphonated or sulphated esters.  The Specification as open to inspection under Sect. 91 refers to surface active materials comprising sulphonated or sulphated, phosphated and borated nitriles prepared from aliphatic nitriles in general.  This subject-matter does not appear in the Specification as accepted.
Patent GB-583023-A (GB)
Title: Improvements relating to the projection of inflammable material
IPC: F41H9/02
Filed: 1940-09-30
Abstract: 583,023. Burners for flame throwers. FRASER, R. P. Sept. 30, 1940, No. 13654. [Classes 75 (i) and 75 (iii)] [Also in Group XXI] A flame thrower comprises a double hollow nozzle through which the liquids to burn are ejected from a pressure container, so that a core of readily inflammable liquid such as petrol is ejected with a sheath of less inflammable or non- inflammable heavy oil, thus preventing the flame from back firing towards the operator. The petrol is ejected through the central tube 3 of the nozzle which is centrally disposed within a tubular surround 1, the heavy oil being discharged from the space between the tubes and timed to commence just after the primary discharge of petrol, so that a sheath is formed surrounding the petrol. The petrol may be ignited at the target by means of a lighter comprising a textile head 6 soaked in petrol and a stem which is discharged from the nozzle after being ignited just prior to the discharge of the liquid. Alternatively the lighter may be disposed on the shield of the flame thrower just at the end of the nozzle and the head 6 is normally covered by a sleeve 9 retracted just prior to operation. The pressure container 14 comprises a cylindrical vessel having three interconnected cells, two of which 16, 17 contain petrol and heavy oil respectively while the third 15 contains bicarbonate solution and a vessel 19 containing sodium bisulphate solution which can be released for interaction with the bicarbonate solution so as to develop the necessary pressure to expel the liquids for burning from the cells 16, 17, through the supply pipes 27<1> and 28<1> respectively.
Patent GB-810468-A (GB)
Title: Improvements in piston type displacement pumps for controlled lubricating systems
IPC: F16N13/10
Filed: 1956-05-03
Abstract: 810,468. Reciprocating pumps. TRAVIS, R. W. April 26, 1957 [May 3, 1956], No. 13673/56. Class 102(1). The piston rod 27 of a lubricating pump is actuated in one direction by a member 161 which is connected by pawls 29 to a sleeve 16 moved in that direction by a lever 12 engaging a cam 7 which has a slot 8 in which a pin 10 on the final wheel of a reduction gear engages. The rod 27 is returned on the pressure stroke by a spring 24. The member 161 carries a hand priming knob 17. When the piston is held in its lower position the member 161 may be released from the sleeve 16 by depressing the knob 17 to release the pawls 29.