baber/WOPTO huggingface dataset:
Patent GB-1491137-A (GB)
Title: Copper complex algaecides and herbicides
IPC: A01N33/04
Filed: 1975-02-17
Abstract: 1491137 Pesticidal application of copper complexes SANDOZ Ltd 17 Feb 1975 [19 Feb 1974] 6567/75 Heading A5E An algaecide and aquatic herbicide comprises a complex of a copper (II) compound and either (a) an amine of the formula:  in which R<SP>1</SP>-R<SP>4</SP> are hydrogen or C 1 -C 3  alkyl, R<SP>5</SP> is a C 2 -C 6  saturated divalent hydrocarbon radical and n is 1-5 or (b) an amino-C 2 -C 5 - alkylene-C 2 -C 5 -alkanolamine provided that when (b) is used it is complexed with an acid copper (II) salt and used to combat aquatic weeds. The complex may be sprayed or strewed on the water or added in aqueous solution or emulsion e.g. through a hose at the bottom of the water to be treated, optionally with a further herbicide or algaecide, e.g. diquat or endothal K.
Patent GB-235315-A (GB)
Title: Improvements in and relating to grinding machines
IPC: B24B7/08
Filed: 1924-03-14
Abstract: 235,315. Meil, J. M. March 14, 1924. Disc apparatus.-A grinding-machine comprises a grinding-wheel 1 mounted on a shaft 2 running in bearings in a cylindrical member 10, which is mounted on a pedestal 4. The periphery of the wheel projects a short distance through a slot 8 in a table 7 mounted on a stem 9, which is adjustably carried by the member 10, so that it may be lowered as the wheel wears away, and for this purpose a screw 18 engaging the stem is provided ; the weight of the table may be counterbalanced by a weighted lever 14 or by a spring 16, and the stem is clamped in adjusted position by a pinching-screw or a split in the member 10 and a clamping-screw. A guard 24, or a hinged guard 25, is provided for the wheel. Packing 27 may be provided to prevent the entrance of dust to the bearings. The member 9 may slide outside the member 10 instead of inside. In a modification, the table carries two downwardly extending cylindrical members sliding within cylindrical sockets, and in a further modification, the table carries two downwardly extending members of rectangular cross-section, the base of the machine carrying upwardly extending members which contact with the downwardly extending members on all sides. The table or the base may be so shaped as to enclose, or partially enclose, the grinding-wheel.
Patent GB-595372-A (GB)
Title: Improvements in and relating to oscillation damping for high-speed spindles
IPC: F16F15/023
Filed: 1945-03-16
Abstract: 595,372. Bearings. SPINDEL-, MOTORENUND MASCHINENFABRIK AKT.-GES., and MORF, A. March 16, 1945, No. 6706. [A Specification was laid open to inspection under Sect. 91 of the Acts, March 16, 1945.] [Class 12 (i)] [Also in Group XXXII] The oscillations of a high-speed spindle 1 rotating in a bush 3 mounted in a housing 6 having oil contained therein up to a level N-N are damped by providing externally at the lower end of the bush 3 a series of nested short cylinders 12 ... 16 held axially together by a flat spiral spring 19 at each end of the nested cylinders with the springs fitting oppositely facing grooves 17, 18 in the innermost and outermost cylinders; alternatively the inner end of the spring 19 may be attached to an end stud 7 of the bush 3. The bush 3 is mounted at its upper end by a ball-joint bearing 5. The spindle has a footstep bearing 4 within the lower end of the bush.
Patent GB-249842-A (GB)
Title: Improvements in or relating to the treatment of cotton fibres, preparatory to dyeing
IPC: D06P5/22
Filed: 1926-03-11
Abstract: 249,842. Karrer, P. March 27, 1925, [Convention date]. Liquids, processes and materials for treating with.-Cotton textile materials previous to dyeing are treated in such manner as partly to esterify the cellulose with aryl sulphonic groups, particularly benzene-toluene-, or naphthalene-sulphonic groups, as for example, according to the process described in Specification 195,619, and are then heated with a solution of ammonia, or of an aliphatic or aromatic amine, or of hydrazine or a hydrazine derivative. In an example, cotton partly esterified with p-toluene-sulphonic groups, is heated in an autoclave with aqueous ammonia solution. The Specification as open to inspection under Sect. 91 (3) (a) refers to the treatment of cotton materials partly esterified with alkyl sulphonic groups. This subject-matter does not appear in the Specification as accepted.
Patent GB-708687-A (GB)
Title: Improvements in or relating to electric current control devices
Inventor: BECK ARNOLD HUGH WILLIAM
IPC: H03K17/88
Filed: 1952-03-17
Abstract: 708,687. Electron beam apparatus. STANDARD TELEPHONES & CABLES, Ltd. March 17, 1952 No. 6854/52. Class 39(1) [Also in Group XL(c)] An electron discharge tube for indicating the coincidence of two or more voltage pulses comprises a central cathode 24, a squirrel cage formation of grid wires 25 for forming a plurality of radial electron paths to a common anode 26, and an independent control electrode 27 between each electron path. A focusing grid 35 and a helical screen grid 29 may be provided. The control electrodes 27 are in the form of radial vanes and are provided at their rear ends with flanges 28 projecting to either side. Voltages are applied to the control electrode so that each pair of adjacent control electrodes functions as a gate to the intermediate electron stream; at a given low potential on all the control electrodes the gates are closed. while at a given higher potential all the gates are fully open. Voltage pulses are applied to each control electrode, or to each pair of diametrically opposite control electrodes connected together, and if the voltage pulses are all coincident all the gates are fully opened, and maximum output is derived from the anode. If however this condition is not fulfilled, an adjacent. pair of control electrodes are at different potentials, and the intermediate electron stream is at least partially collected on the control electrode of higher potential. The current flow to this electrode is then utilized through the external circuit connections to partially close the other electron gates. Thus a lower output is derived from the anode, indicating non-coincidence. Data is given as to particular dimensions of the electrodes and spacings, and as to suitable values for the external circuit components. Values of interelectrode capacities are also given. Examples are given of results obtained. The invention comprises also a circuit arrangement including four separate cathode-ray tubes, each tube providing a current path corresponding to an electron path in a single discharge tube such as described above (see Group XL(c)).
Patent GB-348260-A (GB)
Title: Improvements in or relating to picture telegraph and like systems
IPC: H04N3/04
Filed: 1930-03-01
Abstract: 348,260. Television; copying telegraphy. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. March 1, 1930, No. 6868. Convention date, March 13, 1929. [Class 40 (iii).] Rotating scanning members adapted to scan along a chord of their circular path are so shaped that the scanning speed along the chord remains constant. In electrochemical recording, the scanning members 3 .. 8, Fig. 1, pass over a bar 9, the paper 10 passing between. The members 3 .. 8 are so shaped that the scanning speed along the bar 9 remains constant. In television, a rotating mirror 16 throws an image of an illuminated slit 12 on the screen 17. The slit is traversed by apertures 15 in a disc 13, the apertures being so shaped that the scanning speed along the line remains constant. According to a modification, the scanning members 3 .. 8, Fig. 1, are adapted to move radially to the disc 2 under the action of a cam. A graphical method of obtaining the shape of the scanning members is described.
Patent GB-629121-A (GB)
Title: Improvements in and relating to cement compositions suitable for flooring, tiles andthe like
IPC: C04B28/04
Filed: 1947-03-12
Abstract: A composition for use in making floors, slabs, tiles, mouldings, and the like is prepared by mixing damp sawdust with a bituminous emulsion and adding sufficient Portland or like cement to consolidate the mass, and then rendering it fit for trowelling or moulding by the addition of a 2-20 per cent solution of calcium chloride.  The sawdust is preferably dry and is moistened with about 1 gallon of water per cubic foot, and 2-6 parts by volume of the damp sawdust are mixed with 1 part of a bitumen emulsion, 3-6 parts of the resulting mixture being mixed with 2 parts of cement and then with a 2.6 per cent solution of calcium chloride. Specification 471,650 is referred to.  The Provisional Specification states that a solution of an alkaline earth chloride can be employed.
Patent GB-124930-A (GB)
Title: Improvements in or relating to Grinding Mills.
IPC: B02C17/06
Filed: 1918-04-25
Abstract: 124,930. Newell & Co., E., and Woodhouse, G. L. April 25, 1918. Ball and like mills. -Relates to compound tube-mills of the type in which the coarse - grinding chamber 1 is surrounded by a screen 8 and a casing 9, having ribs 11 for conveying the material to a diaphragm 12 which is provided with scoops 15 for delivering the material to the fine-grinding chamber 14. According to the invention, a known type of ball mill of the following construction is employed for the coarse-grinding chamber. The liners 4 of the chamber 1 are stepped in the manner shown in Fig. 2, the leading edges of the liners being farther from the axis than the following edges. The liners are formed with tapered apertures 7 which are countersunk at the inner ends. Scoops 10 are arranged between the liners and the screen 8.
Patent GB-800765-A (GB)
Title: New indole derivatives and process for their preparation
Filed: 1957-03-01
Abstract: The invention comprises compounds of the formula: <FORM:0800765/IV (b)/1> (wherein A is a single bond or an -NH- group and R1 and R2 are hydrogen atoms or methyl groups) and their preparation by the action of ammonia or the appropriate amine or hydrazine on the acid chloride, the azide or an ester of 3-ethylindole - 2 - carboxylic acid.  In examples: (1) ethyl 3-ethylindole-2-carboxylate (prepared from benzenediazonium chloride and ethyl alpha-acetylvalerate in alcoholic potash) is refluxed with hydrazine hydrate to give the hydrazide; (2) an etheral solution of 3-ethyl-indole-2-carboxylic acid azide (prepared by the addition of hydrochloric acid to a solution of the hydrazide product of (1) and sodium nitrite in dioxan with dissolution of the solid appearing on dilution with water in ether) is reacted with dimethylamine at 0 DEG  C. to give the dimethylamide; (3) the monomethylamide is prepared as in (2); (4) 3-ethylindole-2-carboxylic acid and thionyl chloride give 3-ethylindole-2-carboxylic acid chloride and this with dimethylamine at 5 DEG  C. gives the product of (2); (5) 3-ethylindole-2-carboxylic acid amide is prepared as in (2).
Patent GB-486988-A (GB)
Title: Improvements relating to lubricating devices for internal combustion engines
IPC: F01M5/00
Filed: 1937-03-10
Abstract: 486,988. Lubricating internal - combustion engines. COKAYNE, R. M. March 10, 1937, No. 7038. [Class 12 (iii)] For supplying lubricant to the cylinder walls of an internal-combustion engine at starting lubricant passes to the engine through an auxiliary carburetter which delivers a mixture of fuel and air to the induction system between the throttle valve and the engine. As shown a lubricant reservoir e is connected to the auxiliary carburetter b by pipes j, m, and a constant float chamber i. The pipe m has a constriction or adjustable valve n therein. Air vents o, p are provided in the reservoir e and chamber i. The auxiliary carburetter b and the main carburetter a have a common float chamber d. In operation, the suction effect in the carburetter b draws lubricant along the pipe m and the resulting mixture presses to the engine through the pipe c. The lubricant flow ceases when the carburetter b is put out of action. If the oil reservoir e is situated at a lower level than the carburetter b the float chamber i may be omitted. Specification 461,776, [Group XXVII], is referred to.
Patent GB-395087-A (GB)
Title: Improvements in valve gears for engines, pumps or compressors
IPC: F01L1/04
Filed: 1932-03-10
Abstract: 395,087. Valve gear. WILLIAMS, D., 3A, All Souls' Place, Langham Place, London. March 10, 1932, No. 7163. [Class 7 (vi).] A valve 1 is positively closed by a pair of cams 8 engaging a spring 5 secured to the stem, and is opened by rollers 9 mounted on the sides of the cams and engaging inclined surfaces 7 on a bridge piece 6, also secured to the stem.
Patent GB-1113600-A (GB)
Title: Tris-(hydroxymethyl)-aminomethane salts
IPC: C07D339/04
Filed: 1967-02-15
Abstract: Tris - (hydroxymethyl) - aminomethane derivatives, having antiacidotic action, are produced by reaction of monocarboxylic aminated organic acids or inorganic salts thereof with tris - (hydroxymethyl) - aminomethane or acid addition salts thereof. Specified novel derivatives are the theophylline-7-N-acetate, 6,8-thioctate, orotate and pangamate of tris-(hydroxymethyl)-aminomethane.
Patent GB-1113434-A (GB)
Title: Improvements in writing instruments
Inventor: BERNSTEIN THEODORE
IPC: B43K24/12
Filed: 1964-02-20
Abstract: 1,113,434. Multiple retractable ball-point pens. EVERFLOW PEN CO. Ltd. 19 May, 1965 [20 Feb., 1964], No. 7237/64. Heading B6P. In a multiple retractable ball-point pen, crayon or pencil, the front and rear barrel portions 1 and 2 respectively, Fig. 1, are joined by an interconnecting member 3 provided with axially extending bores for guiding the refills and acting as seats for the retracting springs 9. Hook-shaped actuating members 10 are each connected to the end of a refill, and each extends through a longitudinal slot in the rear barrel portion. The actuating members may be coloured to indicate the nature of the ink in the refill.
Patent GB-1517455-A (GB)
Title: Electronic watch construction
IPC: G04G21/00
Filed: 1976-02-24
Abstract: 1517455 Electronic watches HUGHES AIRCRAFT CO 24 Feb 1976 [31 March 1975] 07282/76 Heading G3T Ceramic circuit substrate 14 is sandwiched between front and rear spacers 16, 18 in an electronic watch module, the three parts having cooperating portions to ensure correct relative location. As shown pins 90, 92 on the front spacer project through peripheral notches (26, 28) Fig. 7 (not shown) in the substrate 14 and into notches 94, 96 in the rear spacer. The sandwich is held together by three springs such as spring 100 and the ends of the pins 90, 92 may also be thermoplastically deformed after assembly. The watch shown has a liquid crystal display 124 using polarizers and connected to terminals on the upper surface of substrate 14 by a resilient connector 146. A lamp 170 illuminates the display, on demand, via light pipe 168. Electric cells 31, 32 are held in the rear spacer and connected in series through the case back. The watch case is thus at an intermediate potential which is applied to point(s) on the substrate 14 through a spring 72 and which can be applied to further points by depressing push-buttons to touch J-shaped springs (52, 54, 56) mounted on the edge of the substrate.
Patent GB-815732-A (GB)
Title: Improvements relating to electrical-pressure transducers
Inventor: FIELDEN JOHN ERNEST
IPC: G05D16/20
Filed: 1955-03-14
Abstract: 815,732. Pneumatic transmission of power. FIELDEN ELECTRONICS Ltd. June 7, 1956 [March 14, 1955], No. 7347/55. Class 8(2). [Also in Group XXXVIII] In apparatus for obtaining a fluid pressure proportional to an electric current, in which said current varies the value of reactance in a circuit containing a device which controls the pressure of a fluid, negative feedback is provided by the fluid-pressure which operates means to readjust the reactance towards its original value. As shown, the current is fed to a moving coil movement which determines the position of a vane 9 of a variable capacitor connected to the grid of a triode V1 in an oscillating circuit, to vary the amplitude of oscillation and thereby the mean anode current which energizes the windings L2 of a magnet 16 which attracts an armature 17 against a spring 19, thus varying the fluid flow from a nozzle 20 and hence the pressure in the fluid circuit. The pressure in turn determines the disposition of a bellows 22 which operates, via a taut cord 24 and a pulley 15, to cause the other vane 13 of the variable capacitor to follow the vane 9, and, via a pulley 25, to move an indicator pointer 27, a recording pen, or a controlling device.
Patent GB-1110232-A (GB)
Title: Fluoro-organic compounds
Inventor: MCLOUGHLIN VICTOR CONRAD RICHA
IPC: C07C37/02
Filed: 1964-02-21
Abstract: The invention comprises p-linked polymers containing repeating units of the formula -Ar-C(F)(R)-O-, in which Ar is a p-phenylene group, which may be substituted by one or more perfluoroalkyl groups of 1-3 carbon atoms and/or by one or more nuclear fluorine atoms, and R is fluorine or a perfluoroalkyl group of 1-3 carbon atoms.  The polymers are prepared by polymerizing alkali or alkaline-earth metal salts of phenols substituted in the nucleus with one or more perfluoroalkyl groups of 1-3 carbon atoms and optionally substituted in addition by one or more nuclear fluorine atoms (see Division C2), polymerization being effected by heating the salts with water. Examples are given in which the potassium salts of heptafluoro-p-cresol, nonafluoro-p-ethyl-phenol, nonafluoro - 2,4 - dimethylphenol are polymerized by heating in water to 70-100 DEG  C. Some of the products yield elastomers when heated in vacuo to 180-250 DEG  C. with an alkali or alkaline-earth metal salt.ALSO:The invention comprises alkali and alkaline-earth metal salts of phenols substituted in the nucleus with one or more perfluoroalkyl groups of 1-3 carbon atoms and optionally substituted in addition by one or more nuclear fluorine atoms. The salts may be prepared by the action of an alkali or alkaline-earth metal hydroxide, in the presence of a solvent, on a benzene hydrocarbon substituted with at least one nuclear fluorine atom and at least one perfluoroalkyl group of 1-3 carbon atoms.  Examples are given of the manufacture of the potassium salts of heptafluoro-p-cresol, nonafluoro-p-ethyl-phenol nonafluoro - 3,4 - (or 2,5) - dimethylphenol and nonafluoro-2,4-dimethylphenol by the action of potassium hydroxide on octafluorotoluene, decafluoro-p-ethylbenzene, decafluoro-o-(or p-)xylene and decafluoro-m-xylene, respectively. The free phenols can be recovered by acidifying the salts.  The salts are polymerizable (see Division C3).
Patent GB-242511-A (GB)
Title: Improvements in apparatus for draining coal
IPC: B01D35/28
Filed: 1925-03-19
Abstract: 242,511. Steckchius, F. W. March 19, 1925. Strainers having sheet straining-materials.-In a coal-washing plant, coal and water are delivered from a trough I on to an inclined sieve D, at the foot of which is a, horizontal sieve d<1>. Bakes c are operated from a crank-shaft A, and are formed of wedge section, so as to sink into the coal on the sieve d<1> on the forward stroke and ride over it on the backward stroke. Clean water is sprayed on to the coal from a pipe H, and troughs E collect the used water.
Patent GB-515249-A (GB)
Title: Improvements in and relating to automatic firearms
IPC: F41A3/40
Filed: 1938-03-09
Abstract: 515,249. Automatic guns. BJRKIGT, M. March 9, 1938, No. 7406. Convention date, Feb. 17. [Class 92 (ii)] An automatic firearm particularly for aircraft, having a breech-block 6 and a firing-pin carrier 7 to which the breech-block is coupled by a pivoted catch 9 when the breech is open, the catch engaging a recess 12 in the breech casing when the breech is closed, has the co-operating faces of the catch and recess 12 inclined, so that the reaction induced on discharge tends to disengage the catch, this disengagement being permitted when the firing-pin carrier moves rearwardly sufficiently to provide a recess for the reception of a head 20 on the catch, this head having an inclined forward face which, at the moment of disengagement, is closely adjacent to an inclined face 19 on the firing-pin carrier, whereby rebound of the catch is prevented. The firing pin 8 is coupled to the slides 7 constituting the fir,ing pin carrier by a bar 7' passing through slots 6<1> in the breech-block, and springs r bearing at one end against stops on the breech-block are fitted to tend to maintain the firing pin in its forward position. The firing-pin carrier may be actuated by a gas-piston 13. The breech-mechanism may be cocked non-automatically, e.g., after a misfire by a pneumatic piston 17 which engages a stop 18 on the firing- pin carrier.
Patent GB-717412-A (GB)
Title: Resinous condensation products
Inventor: HOLLIS CHARLES EDWARD
IPC: C08G12/02
Filed: 1951-03-30
Abstract: Condensation products ranging from viscous liquids to solid resins are prepared by condensing cyclo-aliphatic dialdehydes or aliphatic dialdehydes in which the aldehyde groups are separated by at least 3 carbon atoms with ammonia.  The condensation may be effected at room or elevated temperature, with aqueous or gaseous ammonia, in the presence or absence of a solvent, without a condensation catalyst or in the presence of a weak organic acid. Equimolar proportions are preferred but other proportions ranging from 3:1 to 1:3 dialdehyde to ammonia may be employed.  After reaction the product is obtained by evaporating off unreacted ammonia, water and acid, if initially present.  Specified aldehydes are cyclohexane dialdehydes, glutardialdehyde, 2-methoxy - methyl - 2:4 dimethylpentane - 1:5 dial and 2-ethoxymethyl-2:4-dimethylpentane-1:5 dial.  In examples: (1) ethanol and aqueous ammonia (880) are added slowly to 2-methoxymethyl-2:4-dimethylpentane-1:5-dial and the mixture allowed to stand overnight.  A clear viscous balsam which skins over in air and is soluble in organic solvents is obtained by distilling off volatiles; (2) Gaseous ammonia is passed through 2-methoxymethyl-2:4-dimethylpentane -1:5-dial dissolved in ethanol, the reaction mixture being heated to 60-65 DEG C. and allowed to stand overnight when no more ammonia is absorbed.  A product similar to that in (1) is obtained on removing volatiles.  (3) A mixture of ethanol and aqueous ammonia are added to a mixture of 1.3 and 1.4 cyclohexane dialdehyde dissolved in ethanol.  The product is a red viscous balsam.  (4) As in (1) but using (a) glutardialdehyde and (b) 2-ethoxymethyl-2:4-dimethylpentane-1:5-dial.  (5) As in (2) but using (a) glutardialdehyde, 1.3 cyclohexane dialdehyde, 1-4 cyclohexane dialdehyde and 2-ethoxymethyl-2.4-dimethylpentane-1, 5-dial.  (6) Concentrated ammonia is neutralized with acetic acid and the mixture added to 2-methoxymethyl-2:4-dimethylpentane-1.5-dial.  The product is a viscous grease.  (7) As in (6) but with the dialdehyde dissolved in ethanol.