baber/WOPTO huggingface dataset:
Patent GB-263173-A (GB)
Title: Improvement in a process for the preservation of wood
IPC: B27K3/42
Filed: 1926-12-16
Abstract: 263,173. Malenkovic, B. R. V. Dec. 16, 1925, [Convention date]. Fungicides.-Compounds for the preservation of wood are formed by the action of primary aromatic amines on halogen di-nitro derivatives of benzol or its homologues. When molecular quantities of a-naphthylamine and chlorodinitrobenzol in saturated alcoholic solution are mixed, red crystals of an addition product represented by the empirical formula C10H7NH2 . C6H3(NO2)2Cl separate out. Fusion or intimate trituration of the two compounds is sufficient to produce the same compound. The a-naphthylamine may be replaced by #-naphthylamine, aniline, one of the toluidines, xylidines, or by one of the anthramines, or any primary aromatic amine. The chlorodinitrobenzol mav be replaced by corresponding bromine or iodine compounds. The compounds produced can be transformed into the corresponding secondary amines by the elimination of hydrochloric, hydrobromic, or hydriodic acid. The secondary amines are similar in appearance to the compounds first formed, but have higher melting points. The conversion to secondary amine is effected by prolonged boiling in the presence of an excess of the primary amine, or a neutralizing agent such as magnesia, zinc oxide, sodium acetate, &c. is used. Either the intermediate products or the corresponding secondary amine may be used as fungicides; compounds prepared from a-naphthylamine and chlorodinitrobenzol are the most effective. It is essential that only one of the two nuclei, namely that of the benzol toluol or xylol should be nitrated, and that it should contain two nitro groups. The products are very sparingly soluble in water, and if used in aqueous solution are mixed with solutions of other impregnating agents such as zinc chloride, alkali fluorides, or mixtures of alkali fluorides with dinitrophenol salts. Preferably oil is used as a solvent for the original materials, for the products of fusion or trituration, or for the corresponding secondary amines. Coal tar oils, water-gas tar oils, mineral oils, &c. are suitable. Wood may be treated with solutions in oil of the substances described, and then with water alone, with alkali fluorides, &c.
Patent GB-1276794-A (GB)
Title: Hydraulic press
IPC: B30B15/22
Filed: 1970-07-02
Abstract: 1276794 Hydraulic presses ROBERT BUERKLE & CO 2 July 1970 [9 July 1969] 32069/70 Heading B5F In an hydraulic press comprising a press table 4 having low and high pressure closing stages, and automatic feeding and removing means for workpieces, a feeler device actuates the high pressure closing stage only when the press table 4 has traversed a predetermined closing distance. The feeler device comprises a guide rod 8 with a scale 9 and a cam 11 adjustably mounted on the rod 8, and an operating member 14 of a switch 15 located in the path of movement of the cam. If the cam 11 fails to operate the switch member 14 a sequence circuit is operative to reverse the direction of movement of the press table 4.
Patent GB-1268714-A (GB)
Title: Magnetic lens
Inventor: WIDEROE ROLF
IPC: G21K1/093
Filed: 1969-06-25
Abstract: 1,268,714. Discharge apparatus. BROWN, BOVERI & CO. Ltd. 25 June, 1969 [27 June, 1968], No. 32112/69. Heading HID. A magnetic lens for an electron beam, e.g. in a linear accelerator, betatron or microtron, comprises a toroidal coil 1 surrounding a toroidal chamber coaxial with the lens axis, and which is formed of a number of turns for connection to a current source to produce in the chamber an axially symmetric, azimuthally orientated magnetic field to focus outer electrons of the beam passing through the chamber. Adjacent turns of the coil may be separated only by an electrically insulating compound and the coil may be a ribbon-like aluminium conductor supported in a housing 2. The frusto-conical walls 3 of the trapezoidal cross-section toroidal chamber through which the peripheral electrons 18 pass are made thinner than the remaining parts 4, 5 of the coil. Electrons within the toroidal chamber are deflected proportionally to the magnetic field strength and path length within the chamber; thus since the field strength is inversely proportional to the distance from lens axis the path length should decrease with a square law relationship to the decreasing distance from the lens axis, to obtain precise focusing. These conditions are approximated by the arrangement shown. When used in conjunction with accelerators which produce electron beams in pulses preferably the magnetic lens is energized only when electron beams are present, Fig. 3 (not shown). Two such individually adjustable magnetic lenses may be used in series in a linear accelerator delivering electron beams with small divergence angles, the first being employed as a dispersion lens while the second lens, disposed on the object to be irradiated, focuses the beam. The coil may be cooled by blowing air into an annular duct between the toroid coil and the housing wall and into which cooling fins extend.
Patent GB-866611-A (GB)
Title: Improvements in and relating to chains and marine apparatus moored or anchored by chains to the sea bed
IPC: B63B35/44
Filed: 1958-10-08
Abstract: 866,611. Boring earth: buildings and structures subaqueous. POPPER, O. Oct. 2, 1959 [Oct. 8, 1958], No. 32163/58. Classes 68(2) and 85. [Also in Group XXV] An oil or gas drill rig 17 is mounted on a platform 36 connected by octagonally spaced hollow stanchions 19 to an annular vessel 10. Chains 16, extending through the stanchion 19 connect the vessel 10 to an anchor 22. The latter has a cavity 22 into which air may be pumped via a connection 25. A hollow tube 27 rigid with the anchor 22 serves to locate the drill. Air may be pumped via the stanchions into the vessel 10 to adjust its buoyancy. In deep water (Fig. 2, not shown), the chains 16a, 16b, may be connected to separate anchors. The chains are formed from tubular material (see Group XXV) so that they are weightless in water and extend without sag. When oil is struck, the vessel 10 is removed from association with the anchor 22 by means of a removable segment forming a slot in the vessel 10 to permit disengagement of the tube 27. The chains 16 are detatched from the stanchions and secured to points 38, 39 on the tube 27. A helicopter platform is provided at 37. The platform 36 may support a radar or a weather station.
Patent GB-1262713-A (GB)
Title: Means for adjusting the speed of a grinding wheel
Inventor: INGVAST HAKAN
IPC: B24B47/18
Filed: 1969-06-26
Abstract: 1,262,713. Grinding. ALLMANNA SVENSKA ELEKTRISKA A.B. 26 June, 1969 [28 June, 1968], No. 32245/69. Heading B3D. Means for adjusting the speed of a grinding wheel as it wears down by monitoring the wheel diameter, includes at least one nozzle through which gas is blown substantially parallel to the wheel axis, and at least one sensing member to sense the pressure in or near the gas nozzle, which pressure is dependent on the position of the nozzle in relation to the wheel periphery, and provides an output signal for transmission to control means to adjust the wheel speed. In a first embodiment, Fig. 4, a set of spatially fixed nozzles 11-16 are provided in a pressure space 20, each having a central sensing tube 21-26 connected to a respective pressureoperated switch 33-38 for by-passing resistances R 1 -R 6  respectively in a resistor bridge circuit. As the grinding wheel 17 wears down, the gas streams sequentially cease to impinge on its axial face, and the pressure in the sensing tubes changes from slightly super-atmospheric to slightly sub-atmospheric. Diaphragms 41 in the switches 33-38 successively short out each resistance R 1 -R 6  to change the electric output signal across resistance Ru, variation in this parameter controlling the speed of a grinding wheel motor. Alternatively, Figs. 7, 8, a single monitoring means 81 is mounted on a pivotable arm 82 to follow the contour of the grinding wheel 80, a spring 86 biasing the arm upwardly and outwardly, while the pressure in the sensing tube 90 connected to a bellows 87 balances the spring force when the monitoring means is adjacent the wheel periphery. A potentiometer output signal dependent on the angle of the arm 82 governs the motor speed. In a similar embodiment, Figs. 5-6 (not shown), the sensing tube of a single monitoring means may control, through a pressure-operated switch (63) a motor (54) for raising or lowering the pivotable arm (52).
Patent GB-211253-A (GB)
Title: Improvements in or relating to balance ploughs
IPC: A01B3/68
Filed: 1922-11-25
Abstract: 211,253. Howard, Ltd., J. & F., Howard G., and Steinmetz, A. B. S. Nov. 25, 1922. Balance ploughs.- In order that a balance plough may be thrown out of balance for putting extra weight on the ploughs in work, the main frame is supported by trunnions resting on rocking plates mounted on the wheel frame. The main frame consists of two frames A, B connected together by two pairs of cheek plates C carrying four, six, or more trunnions C<1> .. C<4>. Fitting closely between the plates C are notched rocking plates D engaging over the lower stretcher bar E' of the wheel frame and provided with recesses to receive the trunnions. The draught bar E<2> is laterally adjustable on the wheel frame and is connected to the frames A, B, by chains A<2>, B<2>. Normally the inner trunnions C<2>, C<3> rest in the inner recesses D<2>, D<3> in the rocking plates D, which are inclined as shown. In this position the main frame can be rooked to raise and lower the ploughs. The first pull on the hauling-cable H moves the wheel frame forward and tilts the plates D until thev come into contact with stops C<5> and the main frame is supported only by the outer trunnions C<1> resting in the outer recesses D<1>. When the direction of haulage is reversed at the headland. the pull on the cable I first returns the wheel frame and plates D to their normal positions and afterwards moves them until the plates D engage stops C' and the main frame is supported only by the trunnions C<4> resting in the recesses D<4>. The arrangement is such that the centre of gravity is maintained nearly in the same straight line and horizontal plane.
Patent GB-774816-A (GB)
Title: Improvements in strain gauges
IPC: G01L1/22
Filed: 1954-11-08
Abstract: 774,816. Resistance strain gauges. RUSSELL, J. D. Nov. 8, 1954 [Nov. 9, 1953], No. 32313/54. Class 40 (1). A strain gauge comprises a resistance wire element, with lead wires by which it can be connected to a measuring circuit, surrounded by compacted insulating material in a casing so that both tensile and compressile strains in the casing are communicated through the material to the wire. In Fig. 1 the tubular casing 16, e.g. of thin sheet steel is filled with compressed insulation 19 such as powdered mica, aluminium or thorium oxide, or polytetrafluoroethylene between insulating washers 20, the housing being drawn after assembly to compress the insulation. The gauge wire 15 may be welded to leads 17, 18 as shown, or may be formed by drawing out the centre part of a wire, the ends of which serve as leads, and may be of zig-zag form. Temperature effects are eliminated by choice of a housing material with a similar expansion coefficient to the test specimen, and by connecting a similar dummy gauge, fixed to the specimen at one point only adjacent the active gauge, in a compensating circuit. To facilitate welding the housing to the specimen the tube may (a) be drawn to the form shown in Fig. 4; (b) be formed of two semi-circular sections with flanges, welded together along the flanges, in which case the flanges may be bent down to allow of spotwelding to the specimen; or (c) be welded to a flat strip which is welded to the specimen. In all cases the welding surfaces may be slotted or perforated. The tubular housing is made weak so as not to alter the strength of the specimen materially by forming it with transverse corrugations or grooves. A form particularly suited to welding is shown in Fig. 14, and is formed by placing the half tube 51 in an inverted position in a welding jig and assembling the gauge wire and washers therein with compacted insulation overflowing the hollow. Flat plate 52 is welded to the flanges 53 first at the edges and then by applying pressure to the welding electrodes adjacent the insulation so as to compress it. A housing of similar form or with only a single flange may be formed similarly by bending from a single metal sheet. In Fig. 8 the housing consists of a body 30, with a groove 31 in which the wire 35 is assembled with its lead wires 33, 34 clamped between mica plates 36-39. The powdered insulating material 43 and plates are compressed through overlying blocks 40, 41, 44 held in place by deformation of the upper edges of the groove.
Patent GB-1335752-A (GB)
Title: Laser apparatus
IPC: H01S3/042
Filed: 1971-07-12
Abstract: 1335752 Lasers HUGHES AIRCRAFT CO 12 July 1971 [13 July 1970] 32530/71 Heading H1C Leakage of a gaseous coolant from a metallic laser housing 12 is prevented by resilient 0-ring seals 38, 48, e.g. of butyl rubber, provided between chromium bonded end portions 56 of a laser active medium rod 16 and tubular rod supports 34, 42, the rings being located in internal grooves 38, 48 of the supports and the chromium bands protecting the rings from laser radiation. Support 34 is an extension of the housing, while support 42 is a threaded cylinder adjustably screwed into a fixed housing extension 40 and secured by a locking nut 54. A further resilient 0-ring 46 located in a groove 50 provides a seal between the extension 40 and support 42. The active medium rod may be Nd : YAG or a ruby, and is located with a flash lamp 16 within a cylindrical reflector 18. The gas coolant may be pressurized nitrogen, helium or argon, and is force circulated by an impeller 26, heat transfer to the exterior of the housing being effected by internal and external fins 28, 30. A blower 32 cools the external fins. The laser may be an amplifier or an oscillator.
Patent GB-406960-A (GB)
Title: Improvements relating to electromagnetically-operated warning horns
IPC: G10K9/15
Filed: 1933-11-21
Abstract: 406,960. Electromagnetic interrupters. KLAXON, Ltd., 36, Blandford Street, London, and COOK, E. T., Dartmeet, Hedgerley Lane, Gerrards Cross, Buckinghamshire. Nov. 21, 1933, No. 32539. [Class 38 (v).] The contact-breaker of an electric horn which is operated by an insulating member 17 clamped to a vibrating plate 8 comprises contacts 10 the movable one of which is carried by a springy horse-shoe member 13 and both of which are carried on a flexible member 12 anchored at one end and whose other end is adjusted against a helical spring by an internally-threaded sleeve 15 engaging a threaded stem on the member 12. The sleeve 15 has a head adjustable from outside the casing 1, the coacting surfaces therebetween being serrated to ensure the parts remaining in their adjusted position.
Patent GB-1221431-A (GB)
Title: Interior rear view mirrors for road vehicles
Inventor: TAYLOR WILLIAM
IPC: B60R1/04
Filed: 1967-07-14
Abstract: 1,221,431. Rear view mirrors. JOSEPH LUCAS (INDUSTRIES) Ltd. 9 July, 1968 [14 July, 1967], No. 32554/67. Heading B7J. An interior rear view mirror comprises a mounting plate 22, adapted to be secured to a body part of a vehicle, having a circular rib 25 and a concentric partially closed cylindrical recess 23 retaining a spring 28 that detachably engages the enlarged head 17 of a spigot 16 on the other, disc-shaped, end 13 of a mirror bearing arm by means of four substantially S-shaped arms 29, an annular surface on the periphery of the disc 13 bearing against the top of the rib 25 and having a V-shaped projection 21 engaging in a V-shaped groove 26 in the plate 22 and rib 25 to provide cam means aiding disengagement of the arm and the plate when the arm is rotated relative to the plate. Two further modifications disclose the use of a spring circlip instead of the spring clip 28 and the provision of two diameterically opposed pairs of V-shaped projections and grooves, respectively.
Patent GB-335421-A (GB)
Title: Process for the manufacture of urea
IPC: C07C273/04
Filed: 1929-10-28
Abstract: 335,421. Naamlooze Vennootschap de Bataafsche Petroleum Maatschappij, (formerly De Bataafsche Petroleum Maatschappij). Nov. 13, 1928, [Convention date]. Manures.-In obtaining urea a suitable ammonia-carbon dioxide compound is mixed with an indifferent high-boiling viscous liquid such as transformer oil and brought under pressure at an elevated temperature with or without the presence of a catalyst. According to an example, carbon dioxide and ammonia are conducted into the viscous oil until a paste is formed containing ammonium carbamate and 50 per cent of oil. The paste is forced into a chamber where a temperature of 150-200‹ C. and a pressure of 100 atmospheres is maintained. The resulting mass of urea, water, unconverted ammonium carbamate and oil is transferred to a distilling apparatus provided with a reflux condenser wherein the unconverted ammonium carbamate is removed as ammonia and carbon dioxide, the heat remaining in the indifferent high-boiling liquid after conversion being utilized. The aqueous solution of urea is then separated from the layer of viscous oil. Alternatively ammonium carbonate or carbamate may be mixed in a paste with the viscous oil and treated as above. Fertilizers can be made by adding additional substances at different stages in the course of the process, for example during the preparation of the paste.
Patent GB-1378551-A (GB)
Title: Spectrally sensitized direct positive emulsion
IPC: G03C1/485
Filed: 1972-07-13
Abstract: 1378551 Spectrally sensitized photographic direct positive silver halide emulsion AGFAGEVAERTAG 13 July 1972 [14 July 1971]  32729/72 Heading G2C A photographic material contains at least one direct positive silver halide emulsion layer which is spectrally sensitized with a polymethine sensitizer which contains an isoindolinone ring. The sensitizer preferably has the formula:- wherein R<SP>1</SP> is a saturated or unsaturated aliphatic group which may be substituted or an optionally substituted aryl group; R<SP>2</SP> is H or halogen; R<SP>3</SP> is a saturated or unsaturated aliphatic group which may be substituted, a cycloalkyl group or an optionally substituted aryl group; n is 0 or 1; X<SP>#</SP> is an anion; and Q completes a 5- or 6-membered heterocyclic ring which may bear a condensed benzene, dioxolobenzene or naphthalene ring and may be substituted. Many sensitizers are listed. These sensitizers have a sufficiently intense sensitizing effect and have no deleterious effect on the gradation.
Patent GB-1426338-A (GB)
Title: Advanceable bracing or support assemblies for use in mine workings
IPC: E21C35/12
Filed: 1973-07-10
Abstract: 1426338 Staker props GEWERKSCHAFT EISENHUTTE WESTFALIA 10 July 1973 [13 July 1972] 32745/73 Heading E1P An advancable staker support prop 12 for a conveyor comprises a hollow floor member 10 having a beam 23 which is telescopically mounted therein and pivotally connected at 25 to guide means 24 for the conveyor, means such as a double-acting piston-and-cylinder unit 33, 35, 26, 28 being provided for effecting relative movement between the floor member and the beam and for adjusting the inclination of the guide means. The cylinders 26, 33 are pivoted to a fixed lug 27 by a pin 34 and their respective pistons 28, 35 are connected to a fixed cross-piece 30 and the wall 37 of the guide means 34 by ball joints 29, 36. For numerous minor modifications Fig. 2, (not shown), and the Specification should be referred to.
Patent GB-428627-A (GB)
Title: Process for the production of highly plastic colloidal tungsten compounds
IPC: C22B34/36
Filed: 1933-11-23
Abstract: Highly plastic organic tungsten compounds are obtained by reacting ammonium tungstate with gallic acid in such proportions by weight that the ratio of gallic acid to ammonium tungstate is between 1 : 2 and 4 : 1.  The reaction is effected in the presence of a mineral acid, and the ammonium tungstate may be replaced by alkali metal tungstate.  By mixing the reaction product with finely divided refractory metals such as tungsten, molybdenum, tantalum, or thorium, or with oxides of zirconium or thorium, extruding the mixture in the form of filaments, rods, or tubes, and sintering in known manner, incandescent lamp filaments or thermionic electrodes may be obtained. "Hard metals" may be produced by mixing the reaction product with a finely divided refractory metal such as tungsten together with carbon, or with tungsten carbide, and with a metal of lower melting point such as cobalt, and sintering the mixture in known manner.  The Specification as open to inspection under Sect. 91 is not restricted to an upper limit for the amount of gallic acid to be used.  This subject-matter does not appear in the Specification as accepted.ALSO:Highly plastic organic tungsten compounds are obtained by reacting ammonium tungstate with gallic acid in such proportions by weight that the ratio of gallic acid to ammonium tungstate is between 1 : 2 and 4 : 1.  The reaction is effected in the presence of a mineral acid, and the ammonium tungstate may be replaced by alkali metal tungstate.  By mixing the reaction product with finely divided refractory metals such as tungsten, molybdenum, tantalum, or thorium, or with oxides of zirconium or thorium, p  extruding the mixture in the form of filaments, rods, or tubes, and sintering in known manner, incandescent lamp filaments or thermionic electrodes may be obtained. "Hard metals" may be produced by mixing the reaction product with a finely divided refractory metal such as tungsten together with carbon, or with tungsten carbide, and with a metal of lower melting point such as cobalt, and sintering the mixture in known manner.  The Specification as open to inspection under Sect. 91 is not restricted to an upper limit for the amount of gallic acid to be used.ALSO:Highly plastic organic tungsten compounds are obtained by reacting ammonium tungstate with gallic acid in such proportions by weight that the ratio of gallic acid to ammonium tungstate is between 1 : 2 and 4 : 1.  The reaction is effected in the presence of a mineral acid, and the ammonium tungstate may be replaced by alkali metal tungstate.  "Hard metals" may be produced by mixing the reaction product with a finely divided refractory metal such as tungsten together with carbon, or with tungsten carbide, and with a metal of lower melting point such as cobalt, and sintering the mixture in known manner.  The Specification as open to inspection under Sect. 91 is not restricted to an upper limit for the amount of gallic acid to be used.  This subject-matter does not appear in the Specification as accepted.
Patent GB-756827-A (GB)
Title: Apparatus for detecting holes in material
Inventor: LINDERMAN GARRETT B
IPC: G01N21/894
Filed: 1954-11-12
Abstract: 756,827. Photo-electric pin-hole detector. LINDERMAN ENGINEERING CO., Inc. Nov. 12, 1954, No. 32824/54. Class 40 (3). In a photo-electric pin-hole detector for strips 26 fed by a roll 28, a mercury lamp 22 serving as source of ultra violet is supplied with alternating current at mains frequency modulated also at between 400 and 3000 cycles per second. An ultra-violet filter 40 situated below the strips prevents visible light reaching a bank 42 of parallel-connected photo-cells. The output of the cells is fed to amplifier 50 sharply tuned to the modulation frequency and used to control a thyratron 56 operating a relay 68 to mark or separate defective material. Specification 688,578 is referred to.