baber/WOPTO huggingface dataset:
Patent GB-1040297-A (GB)
Title: Improvements in or relating to the production of organotin compounds
Inventor: COATES HAROLD
IPC: C07C17/16
Filed: 1962-08-15
Abstract: Organotin phosphorus-containing esters are prepared by the reaction of organotin compounds of formula RnSnX4- n where each R represents a hydrocarbon or substituted hydrocarbon group and each X is chlorine, bromine or iodine with a trialkyl phosphate or dialkyl phosphite, the halide value being recovered as an alkyl halide.  The organotin halide may be an alkyl tin iodide formed by the reaction of tin and an alkyl iodide, the alkyl iodide being regenerated in the reaction with the appropriate trialkyl phosphate or dialkyl phosphite for further reaction with tin.  The alkyl groups in the phosphate or phosphite esters may contain 1 to 20 carbon atoms and the esters may be formed in situ from the corresponding alcohol and acid. Reaction between the ester and organotin halide may take place under nitrogen at 100-300 DEG  C. in presence of, e.g., pyridine, Cu, Hg, Ti, Al, Ag, salts of these metals or non-oxidizing acids, optionally in an inert solvent, e.g. ethers or halogenated hydrocarbons.  The organotin ester may be separated by filtration, extraction or distillation, or hydrolysed in situ to the corresponding organotin oxide.  In Example 1, di-n-butyltin di-iodide and tri-n-butyl phosphate react to give a distillate of n-butyl iodide and a residue of di-n-butyltin phosphate.  Other alkyl halides obtained in examples are butyl chloride and bromide and 2-ethylhexyl bromide.
Patent GB-468890-A (GB)
Title: Esters of methacrylic acid, their manufacture and their applications
IPC: C07C69/54
Filed: 1935-11-14
Abstract: Methacrylic esters are manufactured by reacting an alicyclic alcohol with methacrylic acid or anhydride or methacrylyl chloride, or with a lower alkyl ester of methacrylic acid in the presence of an esterification catalyst.  Suitable alcohols are cyclohexanol, decahydro-a -and b -naphthol, ac.-tetrahydro-b -naphthol, 1-, 2- and 3-alkyl substituted cyclohexanols, naphthenyl alcohols, b -cyclohexylethyl alcohol, the alkyl or aryl substituted tetra- or decahydro-a - or b -naphthols, e.g. a -methyl or a -phenyltetrahydro - b  - naphthol, abietyl alcohol and homologous alcohols.  In examples: (1) cyclohexanol and methyl methacrylate are heated with benzene, hydroquinone and p-toluenesulphonic acid to produce cyclohexyl methacrylate; (2) decahydro-b -naphthol similarly yields decahydro-b -naphthyl methacrylate; (3) naphthenyl alcohols and methyl methacrylate are heated with benzene, hydroquinone and sulphuric acid, producing naphthenyl methacrylate.  Polymerization products are manufactured by polymerizing the esters described above by the methods described in Specification 465,789, if desired with the addition of the modifying agents ennumerated therein. Interpolymers may be made with other polymerizable esters or other compounds of methacrylic or acrylic acids or vinyl compounds.  The polymers, mixed polymers and interpolymers may be used for the purposes described in Specification 465,789.  They are also suitable for thermoplastic moulding.  The syrupy masses obtained by incomplete polymerization of the esters may be used as described in Specification 465,789, and may also be mixed with comminuted matter, e.g. ground cork, ground wood, fibrous substances or mineral fillers, the mixture being shaped and polymerization then completed.  In examples: (4) cyclohexyl methacrylate is heated in aqueous methanol with benzoyl peroxide; the product is moulded into a disc; (5) the polymerization is effected in toluene at a higher temperature; (6) decahydronaphthyl methacrylate is heated with benzoyl peroxide; the product is moulded into a disc; (7) naphthenyl methacrylate is similarly polymerized; (8) the product of (5) is dissolved with heating in light linseed stand oil, the mixture is diluted with turpentine and cobalt naphthenate is added, producing a varnish; (9) the product of (5) is dissolved in bodied tung oil and light linseed stand oil, the mixture is diluted with turpentine, and, if desired, cobalt naphthenate is added; (10) the varnish of (8) is ground with antimony oxide and titanium dioxide to produce an enamel. specification 15271/14, [Class 2 (iii), also is referred to.  A sample has been furnished under Sect. 2 (5), of polymerized methylcyclohexyl methacrylate.
Patent GB-367873-A (GB)
Title: Improvements in or relating to the weaving of non-flaccid fabric and to products produced thereby
IPC: B21F27/00
Filed: 1930-10-21
Abstract: 367,873. Weaving fabrics with diagonal strands of metal, cane, &c. RILEY, R. B., 2, Bradford Road, Newton Highlands, Massachusetts, U.S.A. Oct. 21, 1930, Nos. 31629 and 31630. [Class 142 (iv).] Woven open mesh grilles or non-flaccid fabrics are produced in a variety of designs by stopping the feed of different strands in certain or all of the sets of weft, warp or diagonal strands employed in the manufacture of a basic fabric such as that shown in Fig. 1. The improved fabric comprises three independent sets of strands A, B, C, Fig. 2, which are positioned in normal straight condition one above the other, the diagonals A, B and the vertical strands C being respectively raised and depressed, by the mechanism described in Specification 273,860, [Class 142 (iv), Woven fabrics &c.], to form a shed into which a locking strand D is inserted. In a modification the fabric comprises two separate sets of strands A, B, Fig. 6, which are raised or depressed at intervals to permit the insertion of the locking strands D. The strands, which may be of any desired section, are composed of non-flaccid materials such as metal, cane, reed, or spun paper, and the fabrics formed therefrom may be used for seats of chairs, baskets, grilles and panelling, fencing or as reinforcing material. They may also be used as panelling for fireside and portable screens, gramophone and wireless cabinets, or for book racks.
Patent GB-690169-A (GB)
Title: A method of improving the solubility of low methoxy pectin in liquids containing polyvalent metal ions, and pectin material suitable for making jellies with such liquids
IPC: A23L29/231
Filed: 1949-12-09
Abstract: The solubility of a low methoxyl pectin, i.e. a de-esterified pectin of acid equivalent weight 250-500, in a liquid containing polyvalent metal ions, e.g. calcium ions, is improved by means of soluble pyrophosphate.  The pyrophosphate may be a mixture of a neutral and an acid salt, and may be added to the liquid together with the pectin.  Examples are given of preparations of pectin of acid equivalent weight 288 with neutral sodium pyrophosphate (Na4P2O7,10H2O) and with both neutral sodium pyrophosphate and acid sodium pyrophosphate (Na2H2P2O7,6H2O), used for forming jellies with milk.  Starch and the colouring and flavouring materials commonly used in jelly making may be incorporated into such preparations.
Patent GB-387444-A (GB)
Title: Improvements in smokers' ash trays
IPC: A24F19/04
Filed: 1931-11-17
Abstract: 387,444. Ash-trays. BOWKER, J. U. and BOWKER, R., 3, Berkeley Avenue, Victoria Park, Manchester. Nov. 17, 1931, No. 31803. [Class 130.] An ash-receptacle 6 is fitted with an inverted frustum 2 having a central opening, a flat collar 14 mounted on the rim 18 of the receptacle, and a cone 1 centrally supported by a spring 3 in a floating manner so as to be set in vibration by a light touch and to shake off any tobacco ash &c. into the receptacle. The spring 3 is enclosed in a telescopic guide 11, 12 and the cone may be held in a fixed position, closing the entry to the container, by depressing a central rod 13 having a cross-bar 4 adapted to engage hooks 5 on the end 16 of the guide member 12. The end 16 is supported from the frustum 2 by arms 7. A spring 9 is interposed between the head 19 of the guide member 12 and a ball 15 on the rod 13.
Patent GB-484786-A (GB)
Title: Switching apparatus for electrically counting rapid reciprocating movements
IPC: F41A19/01
Filed: 1937-11-19
Abstract: 484,786. Switches held set and freed mechanically. RHEINMETALL-BORSIG AKT.-GES. Nov. 19, 1937, No. 31875. Convention date, Dec. 7, 1936. [Class 38 (v)] [Also in Group XXI] A switch for counting the shots fired in a machine gun comprises a housing a which is screwed to the gun casing and has pivoted to it a lever b bearing against a push rod b<3> biassed to the left by a spring b<5> and engaging in a bore in a rod c having an insulating member c<5> for operating contacts d<1>, d2 in the circuit of a counter g. The other end of the rod c is engaged by a rod e biassed to the right bv a spring e<4> and engageable by a lever b<1> pivoted on the housing a. In operation, on recoil a part V connected to the breech block engages lever b<1> to move levers e and c to the left to close contacts d<1>, d<2> and a second pair of contacts f<1>, f<2> in the circuit of an indicator lamp g<1>. As soon as the part V moves to the left. contacts f<1> f<2> are opened by spring e4 but contacts d<1>, d<2> are latched closed by a spring pawl c<4> until part V engages lever b to move rod c back to the original position. Thus the counter circuit remains closed for the time taken for the breech block to move from its rear to its forward position. The lamp g<1> serves to indicate if the breech block has been arrested in its rear position,
Patent GB-839109-A (GB)
Title: Improvements in aircraft propellers
IPC: B64C11/20
Filed: 1958-10-07
Abstract: 839,109. Screw propellers. GENERAL MOTORS CORPORATION. Oct. 7, 1958 [Oct. 7, 1957], No. 31945/58. Class 114. An aircraft propeller blade 20 including a shank 18 which tapers inwardly toward the blade root has a cuff 26 secured to the shank. The cuff comprises a fibre-glass shell 30, a core 36 of polyurethane foam adhesively bonded to the shell 30 and shank 18 by synthetic rubber asphalt cement layers 32, 34 and an outer covering.28 of a polychloroprene impregnated linear polyamide fabric, the leading edge of the shell 30 having a recess 38 into which is cemented an electric de-icing element 40 composed of rubber having heater wires or ribbons extending therethrough.
Patent GB-928176-A (GB)
Title: Improvements in or relating to silica refractories
IPC: C04B35/14
Filed: 1960-09-16
Abstract: Refractories having a basis of silica are prepared by mixing a silica rock which has a substantially constant coefficient of thermal expansion between 900-1300 DEG C. e.g. silcrete or quartzite, with burnt magnesia and/or millscale (Fe3O4), phosphoric acid of specific gravity not less than 1,60 and water, 2,8% of magnesia and/or millscale based on the weight of silica and 2-15% of phosphoric acid is used based on the combined weight of silica, and magnesium and/or millscale the total liquid added being from 2-20%.  The proportion of acid to magnesia and/or millscale is such that there is no substantial excess of acid over that required to form monobasic phosphates.  The silica, magnesia and/or millscale is preferably graded, the magnesia having a particle size of 5-150m  and the millscale a particle size of 2-150m .  Up to 30% of the total silica content may be calcined silica which is added to give a very small firing expansion.  When the composition is to be used in contact with metals e.g. iron or steel, the acid-metal reaction is reduced by the incorporation of inhibitors e.g. sulphonated coal tar products or mixtures of tertiary amines derived from coal tar bases.  The composition may be used as a ramming mix i.e. the silica and magnesia and/or millscale are mixed and gauged on site with the aqueous phosphoric acid and rammed into place, or it may be used as a castable composition when the damp mixture is cast into moulds and naturally or artificially air dried.
Patent GB-1398905-A (GB)
Title: Erection of gyroscopes
IPC: G01C19/48
Filed: 1972-07-07
Abstract: 1398905 Gyroscopes SOC DE FABRICATION D'INSTRUMENTS DE MESURE 7 July 1972 [8 July 1971] 32021/72 Heading G1C Apparatus for erecting a gyrovertical on an aircraft so as to compensate for the effects of gravity comprises an accelerometer 3 which provides a signal indicative of both the acceleration of the aircraft and the effect of gravity in a vertical longitudinal plane of the aircraft, a speed detector 4 providing a signal corresponding to the speed of the aircraft in the longitudinal plane, and a differential amplifier 9 which provides a signal proportional to the difference of the signals supplied on the one hand by the accelerometer 3 and on the other hand by a circuit 6 which differentiates the speed signal from the detector 4 to provide an acceleration signal, the output from the amplifier 9 being arranged to actuate a torque motor 2 in driving connection with the gyroscope but preferably only when the accelerometer signal is below a predetermined value. This predetermined value is set by a threshold circuit 12 which opens a switch 11 in the circuit between the amplifier 9 and torque motor 2 when the predetermined value is exceeded. The accelerometer 3 may be of the electrolytic type, the speed detector 4 may be an altitude compensated anemometer, the input signals to the amplifier 9 may be controlled by low pass filters 7,8 and the output signal from the amplifier 9 may be supplied to the torque motor 2 through a clipping circuit 10 which controls the maximum torque which can be applied. A demodulator 5 for converting sinusoidal signals from the speed detector 4 to direct current signals may be arranged at the input to the differentiating circuit 6.
Patent GB-1176265-A (GB)
Title: Improvements in or relating to a Process for the Production of Bicomponent Filaments or Fibres
IPC: D01F8/14
Filed: 1968-07-04
Abstract: 1,176,265. Bicomponent filaments. CHEMIEFASER LENZING A.G. 4 July, 1968 [6 July, 1967], No. 32025/68. Heading B5B. Bicomponent filaments or fibres having a high mechanical crimping stability are produced by jointly spinning two different thermoplasticfibre-forming synthetic materials through the same spinning nozzles and subsequently drawing and, if desired, setting the filaments, wherein one component consists of a homopolyester of terephthalic acid or of a copolyester with at least 80 mole per cent of ethylene glycol terephthalate units as well as a second diol or a second dicarboxylic acid, and the other component consists of a copolyamide containing as acid component at least 20 mole per cent of terephthalate units. As homopolyester of terephthalic acid polyethylene terephthalate or polyp - (bis - oxy - methyl)-cyclohexyl terephthalate may be used; as copolyesterof terephthalic acid a copolyester consisting of terephthalic acid, isophthalic acid and ethylene glycol or of terephthalic acid, ethylene glycol and another glycol of the general formula HO(CH 2 ) n OH, wherein n= 1- 10 may be used. As copolyamide, a polycondensate of terephthalic acid, adipic acid and hexamethylene diamine; or of terephthalic acid, #-caprolactam and hexamethylene diamine, or of terephthalic acid, isophthalic acid and hexamethylene diamine may be used. The bicomponent filaments crimp spontane. ously after drawing as soon as they are removed from the drawing bobbin.
Patent GB-1177984-A (GB)
Title: Measurement of Selective Properties of Materials
IPC: G01N27/22
Filed: 1967-01-23
Abstract: 1,177,984. Electro-physical measurementmoisture. KINGSBURY TECHNOLOGY Inc. Jan.23, 1969 [Sept.14, 1966], No.32063/69. Divided out of 1,177,981. Heading G1N. The description is substantially identical with the parent Specification but the claims relate to the feature that the electrodes form part of the bale-press-platens and an alternative method of setting the datum of the trimming capacitor is described whereby the capacitor drive motor is stopped by the photo-electric unit (125, Fig.2 not shown) as a bale is inserted in the press i.e. the datum is set with the cell empty.
Patent GB-919461-A (GB)
Title: Improvements in printed circuits
Inventor: HICKS ALBERT RONALD
IPC: H05K3/34
Filed: 1958-10-08
Abstract: 919,461. Printed circuits; direct connections between conductors. TELEPHONE MANUFACTURING CO. Ltd. Oct. 1, 1959 [Oct. 8, 1958 (2)], Nos. 32089/58 and 32090/58. Classes 37 and 38 (1). In order to facilitate the making of an electrical connection to a printed circuit board, the board is pierced from the side carrying the conductive pattern to form a hole in such a manner that the conductive pattern extends inwardly of said side along the side walls of the hole. Terminal tags of dissimilar shape to the holes are inserted in the holes and dip-soldered to the conductive pattern. If the holes are circular the terminal tags may be of U- or V- shape section.
Patent GB-461833-A (GB)
Title: A new and improved binder for loose leaves
IPC: B42F13/00
Filed: 1935-11-21
Abstract: 461,833. Loose leaf binders. SHAW & SONS, Ltd., and FOX, F. E. T. Nov. 21, 1935, Nos. 32282 and 35597. [Class 146 (i)] In a loose-leaf binder of the kind comprising clamping members d, e, one of which carries filing posts which pass through holes in the other member and are releasably-gripped thereto, a rigid back g is provided which is hinged at f to the clamping-member e and adapted to be closed against and fastened to the member d. Each of the clamping-members d, e is formed of two channel members riveted together. In the lower member e is fixed blocks e<3> carrying the posts to which the upper member d is adapted to be adjustably clamped by means of split rubber rings l mounted in the member d and pressed together to grip the posts by fingers m<1> on sliding blocks m actuated by rods n. Each rod n is rotatable in its block m so that the finger-piece n<1> at its end can be turned so as to lie flush with the end of the member d. Strips l<1> of tough flexible material around the rings l prevent wear thereof and tongues o<1>, o<2>, o<3> on metal strips o riveted to the member d prevent displacement of the rings, Latch-bars p are attached to the blocks m and are provided with projecting parts p<2> adapted to engage catches p<3> on the back g to secure it against the member d. In addition, a key-operated lock k may be mounted in the member d to co-operate with catches k<2> on the back g. Posts j<1> may be mounted on the member d, their lengths being such that they project into openings l<4> in the member e when the binder is closed. Specification 398,285 is referred to.
Patent GB-866277-A (GB)
Title: Improvements in or relating to boxes or like containers
IPC: B65D5/44
Filed: 1958-10-09
Abstract: 866,277. Boxes. ROSS, H. A., and ROSS BROS. (LONDON) Ltd. Oct. 9, 1959 [Oct. 9, 1958; Nov, 28, 1958], Nos. 32312/58 and 38556/58. Class 18. [Also in Group XXV] A box is produced from a blank as shown in Fig. 1 having aligned side panels 10, 11, 12, 13 to the aligned edges of which is secured a metal strip 14 comprising a flange 15 attached in the plane of the side panels by pressed-out tongues 17 and a flange 16 at right-angles thereto except along the edges of side panel 11 where the flanges 15 and 16 lie in the same plane, the flange 16 being welded to metal plates 21 provided on two end panels 18. The end panels 18 are bent down at right-angles to the side panels 11 and the remaining side panels then bent down at right angles to each other after which the remaining flanges 16 are welded to the remainder of the metal plates 21. In a modification, the metal strip does not extend around the edges of the whole box, since the lid is made up of two side-panels instead of one along the edges of which the strip extends partially. A further embodiment consists of an open box, formed with only three side-panels.
Patent GB-1008439-A (GB)
Title: Display stand for cards and the like
IPC: A47F7/14
Filed: 1964-08-07
Abstract: 1,008,439. Display stands; table cardholder. H. B. POINTER. Aug. 7, 1964, No. 32339/64. Headings A4A and A4T. A display stand for greetings cards comprises substantially rigid plane card holders 1, 13 radiating from a central axis and provided in their outer edges with a plurality of slits 11 for retaining cards and support 17 interlocking with the holders at 12, 18. A ring 19 with cross-slots engages notches at the top of the holders which interlock by slotting at the axis and are shaped to simulate a tree.
Patent GB-1346472-A (GB)
Title: Polyimide precursor composition
IPC: C08G73/10
Filed: 1971-07-09
Abstract: 1346472 Polyimide coatings EI DU PONT DE NEMOURS & CO 9 July 1971 [10 July 1970] 32359/71 Heading B2E [Also in Division C3] Wire or aromatic polyamide is coated with a polyimide precursor composition which consists essentially of: (1) a polyamic acid which is the reaction product of bis (3, 4-dicarboxyphenyl) sulphone dianhydride and m-phenylenediamine, in mole ratio 1.0/(0.5 to 1.0), and optionally #0.5 mole of methylenedianiline and/or oxydianiline; and (2) 50-95% wt. of the composition of a solvent being γ-butyrolactone and/or sulpholane. Up to 10% wt. of the anhydride may be replaced by pyromellitic or benzophenonetetracarboxylic anhydride. The composition may also comprise # 3.5% mole bis (3, 4-dicarboxyphenyl) sulphone based on the latter and its anhydride, to control the viscosity to 20-40 poise. The composition may be cured, e.g. by heating to 200‹C.
Patent GB-359724-A (GB)
Title: Device for preventing damage to commutators or slip rings of dynamo-electric machines due to excessive wear of the brushes
IPC: H01R39/58
Filed: 1930-10-28
Abstract: 359,724. Brushes and brush-holders for dynamo - electric machines. MELLWIG, J. W., 82, Sonneggstrasse, and RIESE, H., 78, Bahnhofstrasse, both in Zurich, Switzerland. Oct. 28, 1930, No. 32404. Convention date, Oct. 28, 1929. [Class 35.] To interrupt rapidly the circuit when a brush has worn beyond a predetermined limit, the upper surface of the brush or the lower part of the inner surface of the brushholder is insulated and a fusible metal strip is arranged in such a manner that normally it carries only a fraction of the current, but when the brush passes beyond a certain level in the brush-holder it has to carry the whole of the current and is thereby fused. In the form shown, the fusible metal 6 is inserted in the insulated portion 3<1> of the brush and is in contact with the conductive part 3 of the brush. When the dividing line g between these parts of the brush falls below the edge of the brush-box 1, the only path for the current is through the metal 6 which fuses only when a predetermined part of its area is in contact with the brush box. In an alternative arrangement, the lower part of the brush-box is insulated and the fusible metal is inserted in the insulation, and the brush surface is uninsulated.
Patent GB-323594-A (GB)
Title: Improvements in or relating to spindle driving apparatus for machines for spinning fibrous materials
IPC: D01H1/241
Filed: 1928-11-07
Abstract: 323,594. Scragg, S., and Scragg &. Sons, Ltd., E. Nov. 7, 1928. Spindle-driving apparatus.-In combined doubling and spinning machines, as used for doubling yarns such as silk, artificial silk, and silk and cotton or other yarns, wherein the spindles are driven by an endless belt running longitudinally of the machine, the shaft 9 carrying the belt pulley 10 is provided with a bevel wheel 11 which is engaged by one or the other of two bevel wheels 13, 14 on a sleeve 12 slidable on the driving-shaft 7, whereby the direction of rotation of the spindles may be readily reversed. Friction gears may be used instead of bevel gears. The sleeve 12 is provided with a U-shaped slot 15 engaged by a stud 16 on the shaft 7, and is moved by means of a milled head 18 or by a lever movable in a slot or over an indicating arc and, if desired, connected by trip-mechanism with the starting and stopping device of the machine. The shaft 7 may be provided with a hand-wheel so that it turned slightly to facilitate the change-operation. The gear wheels are encased. The Provisional Specification also comprises a handle or handle wheel provided with a pointer for moving the pinions.