baber/WOPTO huggingface dataset:
Patent GB-1140748-A (GB)
Title: New carboxylic acid derivatives
Inventor: LEIGH THOMAS
IPC: C07C323/19
Filed: 1966-06-23
Abstract: 1,140,748. Carboxylic acid derivatives. IMPERIAL CHEMICAL INDUSTRIES Ltd. 30 May, 1967 [23 June, 1966 (2)], Nos. 28198/66 and 28200/66. Heading C2C. [Also in Division A5] Novel carboxylic acid derivatives of the general formula wherein X is an oxygen or sulphur atom or an imino or sulphonyl radical; Y is a direct linkage or an oxygen or sulphur atom or a sulphonyl or -CR<SP>1</SP>R<SP>2</SP>- radical; R<SP>1</SP> and R<SP>2</SP>, which may be the same or different, are hydrogen atoms or alkyl radicals; and the ring B is optionally substituted by one or more substituents selected from halogen atoms and alkyl radicals; and esters, amides and salts thereof are prepared by reaction of a metal derivative of the formula wherein X<SP>1</SP> is an oxygen or sulphur atom and M is a metal atom, with a carboxylic acid of the formula Z-CR<SP>1</SP>R<SP>2</SP>-COOH, wherein Z is a halogen atom, or an ester, amide or salt thereof, or by reaction of a halogen derivative of the formula with an ester, amide or salt of a carboxylic acid of the formula M-X<SP>2</SP>-CR<SP>1</SP>R<SP>2</SP>-COOH, wherein X<SP>2</SP> is an oxygen or sulphur atom or an imino radical; whereafter, if desired, the product of the first formula above wherein either or both of X and Y are sulphur atoms is oxidized to the corresponding compound wherein either or both of X and Y are sulphonyl radicals; whereafter, if desired, the resulting carboxylic acid or salt thereof is converted to an ester or amide thereof by conventional means, a resulting ester is converted to an amide thereof by conventional means, or a resulting ester or amide is hydrolysed to the corresponding carboxylic acid or salt thereof by conventional means. 4 - (p - Chlorophenyl) - benzyl alcohol is prepared by hydrolysis of 4-(p-chlorophenyl)- benzyl chloride. 4 - (p - Chlorophenoxy). benzyl chloride and 4-(p-chlorophenyl)-benzyl chloride are prepared by treating 4-chlorodiphenyl ether and 4-chlorobiphenyl, respectively, with ethoxymethyl chloride and stannic chloride 4-(p-Tolylthio)-benzyl alcohol is obtained by reacting p-thiocresol with ethyl p-aminobenzoate in the presence of sodium nitrite and hydrochloric acid and reducing the resulting 4 - (p - tolylthio) - benzoic acid with lithium aluminium hydride. 4-(p-Chlorobenzyl)-benzyl alcohol is prepared by treating 4-chloro-4<SP>1</SP>- methylbenzophenone with gaseous chlorine, converting the resulting 4-(p-chlorobenzoyl)- benzyl chloride to 4-(p-chlorobenzoyl)-benzyl acetate with acetic acid and reducing the said acetate.
Patent GB-376571-A (GB)
Title: Improvements in or relating to stuffing boxes
IPC: F16J15/16
Filed: 1931-10-10
Abstract: 376,571. Stuffing-boxes. MORTERUD, K., Torderod, near Moss, Norway. Oct. 10, 1931, No. 28205. Convention date, Oct. 13, 1930. [Class 122 (v).] In a stuffing-box for a rotating shaft, in which cooling liquid is supplied to the interior of the shaft through channels in the stuffing-box, the inlet and outlet channels are formed in loose rings 6, 8, which are placed in a recess in the gland, and are packed by packing 9 compressed by an auxiliary gland 10. The cooling liquid enters by a passage 15 and passes to the interior of the shaft by a perforation 4. The liquid is distributed by an inner tube 3 to a perforation leading to the ring 8 and escapes by a passage 14.
Patent GB-503871-A (GB)
Title: Improvements relating to machines for sorting small articles according to size
IPC: B07C5/06
Filed: 1937-10-16
Abstract: 503,871. Delivering like articles in succession. LUCAS, Ltd., J., and CRAIG, W. A. Oct. 16, 1937, No. 28230. [Class 78 (i)] [Also in Group XIX] Small articles such as headed pins are fed singly to a reciprocating slide b by which they are carried to gauging devices. The pins q are fed down an inclined channel 8 to the point reached by the forward end of the slide b in its retracted position. At one side of the channel is located a pivoted lever u with a sharp edge adapted to enter between the end pin and the next one. At the other side of the channel is pivoted a lever t which is normally pressed by a spring to close the end of the channel. Two stops, formed by a spring 4 and a screw 3 respectively are located on the slide and engage the levers u, t to separate the end pin and allow it to drop into a gauging slot.
Patent GB-731246-A (GB)
Title: Improvements in or relating to band saws or like machines
Inventor: LESTER ARTHUR WILLIAM
IPC: B23D55/06
Filed: 1950-11-18
Abstract: 731,246. Pulleys. MIDLAND SAW & TOOL CO., Ltd. Feb. 18, 1952 [Nov. 18, 1950], No. 28251/50. Class 80 (1). [Also in Groups VIII and XXIII] A pulley for a band-saw or similar endless belt tool having a rubber or like resilient tyre seated in a circumferential groove in its periphery, is characterized in that in addition to the provision of means imposing restraint against radial lift at the sides of the tyre, the base of the groove is provided at a position spaced axially inward of the side walls of the groove with a formation of undercut cross-sectional shape with which the tyre is engaged so that radial lift of the central zone of the tyre when rotated is positively resisted. The pulley has a rim 11 with a groove incorporating a resilient tyre 10, the groove comprising a base 14 and an undercut 17 at each side to restrain the sides of the tyre against outward movement, and a central undercut 19 restraining movement of the middle zone of the tyre. The side restraint may be obtained by bonding the tyre to the side walls by first sand blasting the groove, applying liquid varnish and then winding on strips of rubber to make. up the tyre, after which the tyre is vulcanized. Two or more grooves may be provided to receive the medial portion of the tyre instead of one groove 19.
Patent GB-671446-A (GB)
Title: Improvements in the granular polymerisation of vinyl chloride
IPC: C08F14/06
Filed: 1949-11-04
Abstract: Granular vinyl chloride polymers are prepared by heating liquid vinyl chloride at 30 DEG  to 60 DEG  C. in an agitated medium containing, in percentages based on the weight of vinyl chloride, 0.1 to 3.0 per cent of one or more peroxide polymerization catalysts soluble in vinyl chloride, 0.02 to 0.4 per cent of a p  methyl ether of a polysaccharide soluble in water at 20 DEG  C., and 200 to 500 per cent of water containing in solution 35 to 65 per cent by volume of a saturated monohydric alcohol of up to 2 carbon atoms; also present may be other copolymerizable monomers such as vinyl bromide, vinylidene chloride, vinyl acetate, styrene, methyl methacrylate, and acrylonitrile.  Peroxides specified are acetyl, lauroyl, benzoyl, dicaprylyl, stearoyl, acetyl benzoyl, and 2,4-dichlorobenzoyl peroxides.  Methyl ethers of polysaccharides specified are the methyl ethers of cellulose, starch, inulin, glycogen, and dextrin.  Details are given of comparative experiments employing other colloidal dispersing agents and other alcohols.  U.S.A. Specification 2,194,354 is referred to.
Patent GB-895265-A (GB)
Title: Transistor control circuits for multi-cathode discharge tubes
Inventor: BURNETT LIONEL CLIFFORD
IPC: H03K23/00
Filed: 1960-08-16
Abstract: 895,265. Transistor switching circuits. ERICSSON TELEPHONES Ltd. June 30, 1961 [Aug. 16, 1960], No. 28290/60. Class 40(6). A control circuit for a multi-cathode discharge tube VI having first and second guide electrodes Gl, G2 between each cathode, comprises a transistor T with a direct connection between its collector and the first guide electrodes Gl, and a second connection including a delay circuit between the collector and the second guide electrodes G2. As described, the delay circuit comprises resistor R4 and capacitor C2, and includes also a diode D. The transistor is biased to be normally non- conductive, and application of a positive pulse to the input X switches it on, the potential at G1 becoming -Ve so that the discharge in the tube steps to a G1 guide electrode. Capacitor C2 charges to -Ve and at the termination of the input pulse guides G1 revert to +Vc and the discharge transfers to guides G2, charging C2 towards +HT. The potential at G2 thus rises until the discharge transfers to the next cathode. Specification 712,215 is referred to.
Patent GB-857190-A (GB)
Title: An arrangement for the impulse testing of an auto-transformer
IPC: H01F29/02
Filed: 1958-09-03
Abstract: 857,190. Impulse testing of transformers. LICENTIA PATENT-VERWALTUNGSG.m.b.H. Sept. 3, 1958 [Sept. 12, 1957], No. 28294/58. Class 37 The invention relates to the impulse testing of autotransformers, in which the series winding 2 of the transformer is shunted with a protective surge diverter, the current through the transformer being observed by means of a cathode ray oscilloscope connected across a resistor 6 in series with the transformer. When testing from the free end of the series winding to earth, the voltages across the whole transformer, the common winding 4 and the series winding 2 are observed by means of potentiometers 15, 17 and 12, 14, a cathode ray oscilloscope being connected across resistors 17, 14 or 17 and 14 for the respective measurements. According to the invention, a proper distribution of voltages across the transformer windings is obtained by connecting impedances, e.g. resistors, 8, 9 across the transformer windings, their values being adjusted to give the desired voltage distribution. Impedance 11 permits the connection of an observing oscilloscope. The impedances may comprise the discharge resistors or load capacitors of the impulse generator (Fig. 2, not shown). A similar system of loading impedances across the windings is also used when testing the common winding (Fig. 3, not shown).
Patent GB-259057-A (GB)
Title: Improvements in horse rakes or the like
IPC: A01D76/00
Filed: 1925-11-11
Abstract: 259,057. Bamford, S. B. Nov. 11, 1925. Rakes, horse and traction.-A rake, of the type in which the tines are mounted upon a swinging flame and a.re adapted to be raised when pawls upon this frame are put into engagement with ratchet wheels actuated by the travelling wheels of the machine, has levers that move the pawls into engagement with the ratchet wheels definitely pivoted to the pawls. The ratchet-wheels 14, secured to the wheels 15 or the axle 16, are adapted to be engaged by pawls 2 that are pivoted on the swinging frame 10 carrying the tines 18 and are provided with holes or slots 13. A transverse shaft 9 has L-shaped arms at each end and the end piece 12 of each L enters the hole in the corresponding pawl. The transverse shaft is in two pieces with a loose connection to permit the pawls to operate even though the ratchet wheels are not in register. The shaft 9 is actuated through an arm 8 and link 7 from a treadle lever 1. Cams disengage the pawls after the tines have been raised to the desired height. A spring 5 or equivalent returns the lever 1 to non.operative position. The tines may be held in raised position by a hook 26 adapted to engage a stop 35 on the frame and mounted on a shaft 23. The hub of the hook 26 is provided with a projection that extends into a recess 24 in the hub of a small foot lever 20, 21 arranged to rock on the shaft 23 and fitted with a spring catch to hold it in one or other of two positions. In the one position the hook 26 and stop 35 can engage, in the other they are held free of each other. Specification 135,887 is referred to.
Patent GB-267187-A (GB)
Title: Improvements in or relating to the manufacture of hollow artificial textile fibres
IPC: D01F2/30
Filed: 1925-11-11
Abstract: 267,187. Tennant, W. J., (Rousset, J.). Nov. 11, 1925. Cellulose acetate, cellulose nitrate, and other cellulose derivatives, processes for making filaments from. - Hollow artificial filaments are made by dry spinning a normal solution of a cellulose ester &c. by extruding the solution into air or other gaseous medium at a temperature which is substantially higher than the boiling point of the solvent employed in the solution, the filaments at the moment of extrusion being subjected to an active superficial evaporation by maintaining a comparatively high rate of flow of the gaseous medium. With cellulose acetateacetone solutions, a suitable temperature range is 90-155 C., although the best results are obtained between 100-120 C.; in the case of nitrocellulose solutions in alcohol-ether, satisfactory results are obtained at 90-100 C. Specifications 189,973 and 248,696 are referred to.
Patent GB-262409-A (GB)
Title: Pulverised fuel burning furnace
IPC: F23M5/08
Filed: 1926-11-11
Abstract: 262,409. International Combustion Engineering Corporation, (Assignees of Wood, W. H.). Dec. 3, 1925, [Convention date]. Pulverulent-fuel furnaces; baffles. - In a water-tube boiler furnace heated by pulverized fuel and in which the fuel is admitted and the gases escape at the upper part of the combustion chamber, a depending water. cooled metallic wall is arranged between the burners 8 and waste gas outlet 9 and comprises a vertical row of substantially horizontal water tubes 11 having fins 14. The tubes are connected to headers communicating with the upper and lower ends of the boiler 7 by pipes 16, 15 respectively.
Patent GB-298198-A (GB)
Title: Improvements in or relating to means for indicating the position of a pointer
IPC: G01D7/06
Filed: 1928-10-04
Abstract: 298,198. Siemens & Halske Akt.- Ges. Oct. 5, 1927, [Convention date]. Indicating, optical devices for.-The position of the indicating pointer of a measuring instrument is made visible by means of a beam of light projected on to a screen part of which is adapted to be shaded by means of a vane carried by the pointer spindle. As shown in Fig. 1, the image of a slit 1<1> is thrown, by a source of light 2<1> and a system of lens 1, 2, on to a translucent dial 5. In front of the slit is placed the measuring instrument 4 the pointer spindle of which carries a vane 3 so arranged that a greater or lesser area of the slit is covered as the position of the pointer varies. The dial may be provided with graduations or the scale may be arranged at the slit and be projected on to the dial. A single scale may be used for several instruments, an arrangement for two pointers 16, 17 being shown in Fig. 4. Light filters may be placed in the paths of the light rays to enable the different pointers to be readily distinguished. The vane may have a slot so that the pointer is a line of light instead of a shadow.
Patent GB-1478672-A (GB)
Title: Arrangement and device for the extraction of part of the recoil energy of a cannon or like weapon
IPC: F41A25/20
Filed: 1974-06-27
Abstract: 1478672 Extraction of recoil energy of a weapon RHEINMETALL GmbH 27 June 1974 [13 July 1973] 28561/74 Heading F3C A device for extracting part of the recoil energy of a cannon, for example, from the hydropneumatic barrel braking and counter recoil comprises an auxiliary storage unit having a cylinder 42, Figs. 2 and 3, and a piston 40 which, in the storage operation, is subjected to a pressure difference which displaces it, the cylinder 42 being divided by the piston 40 into portions 36, 38, each of which is connected to a hydraulic cylinder 10 having a piston 14 therein, the latter being connected to a barrel of the cannon by a piston-rod 20. The portions 36, 38 of the cylinder 42 are connected to a chamber 24, via apertures 32<SP>1</SP>, 18 and a conduit 34 respectively, the latter having a non-return valve 68 therein. The apertures 18 are formed in a disc-valve 16<SP>1</SP> which is urged by a spring 19. The chamber 24 contains a control sleeve 64 which is urged by a spring 66 and has a diaphragm gap 60 for a pin 62 carried by the cylinder 42. The cylinder 42 has also a chamber 70 which is connected to the portion 36 by a conduit 74 having a non-return valve 72 therein. A valve 52 has a stem 92 engageable by the piston 40, a stem 82 engageable with a control head 80 carried by the barrel, connects to the portion 38 via a conduit 84, connects to the chamber 70 via a conduit 94 having a one-way valve therein, and connects to an operating cylinder 86 of, for example, the drive of a ramming device (not shown). The cylinder 86 contains a piston 88 urged by a spring 90. A packing 96 and a replenishment tank are provided. In operation the recoil of the barrel (not shown) moves the piston 14, the disc valve 16<SP>1</SP> closes under the action of the spring 19, fluid passes through the apertures 18 and between the diaphragm gap 60, the control sleeve 64 is displaced to the right by the spring 66 to cause an increased throttling action and, consequently, more intensive braking and the piston 26 being urged by compressed gas in a chamber 30, Fig. 1, abuts the sleeve 64, Fig. 2, to displace it to the right and close the gap 60. Inertia causes the barrel and the piston 14 to continue their movement and fluid is taken from the portion 36 of the cylinder 42. The portion 38 fills via conduit 34 and the valve 68. The chamber 68 discharges via the valve 72 conduit 74 due to the piston 40 moving towards the left as shown in Fig. 3. The head 80 abuts the stem 82 of the valve 52 and the portion 38 is connected, via the conduit 84, with the cylinder 86 to drive the ramming device (not shown). When the piston 40 abuts the stem 92 of the valve 52 the cylinder 86 connects to the chamber 70, via the conduit 94. The piston 88 is returned by the combined effort of the negative pressure in the chamber 70 and of the spring 90. The packing 96 ensures that the suction chamber 70, conduits 84, 94 and the cylinder 86 are pressureless when the piston 88 is in its rest position.
Patent GB-774314-A (GB)
Title: Improvements in or relating to devices for producing electro-luminescence
IPC: H05B44/00
Filed: 1954-10-04
Abstract: 774,314. Electroluminescence. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Oct. 4, 1954 [Oct. 7, 1953], No. 28567/54. Class 39(1). An electroluminesncent element is combined with a supply source giving steep-flanked pulses d of voltage which are followed by relatively long periods e of lower or zero voltage, as shown in Fig. 2a, where e = 4d. Such a supply voltage may be derived from a sinusoidal wave by means of a mechanical vibrating or rotary interruptor which switches on the voltage at its maxima and minima. Voltage depdndent resistors or current dependent inductances using saturable ferromagnetic material and with or without capacitors may be used, as may combinations of discharge tubes and R/c members. If the luminescent material is not dispersed in dielectric material and is in contact with the electrodes, successive pulses have the same polarity, if mixed with dielectric material the pulses are alternating.
Patent GB-941109-A (GB)
Title: Cyanoethylation process
IPC: C07C255/24
Filed: 1962-07-25
Abstract: In a process for the cyanoethylation of primary and secondary aromatic amines by reacting them with acrylonitrile, the reaction is performed in an aqueous medium and in the presence of salts of these aromatic amines with strong acids as catalysts.  Preferably the primary and secondary aromatic amines have a basicity which is at least of the same order of magnitude as that of aniline. Specified aromatic amines which may be used are aniline, o-, m- or p-methylaniline, o-, m- or p-ethylaniline, o-, m- or p-hydroxyaniline, p-propylaniline, p-isopropylaniline, p-n-, p-sec.-, or p-tert.-butylaniline, m-p-dimethylaniline, m-p-diethylaniline, p-cyclohexylaniline, p-benzylaniline, p-phenylaniline, o-, m- or p-methoxyaniline, o-, m-, or p-ethoxyaniline, p-propoxyaniline, p-isopropoxyaniline, p-butoxyaniline, m, p-dimethoxyaniline, m. p-diethoxyaniline, p-cyclohexyloxyaniline, p-benzyloxyaniline, p-phenoxyaniline, p-phenylenediamine, p-acetyl-amidoaniline, p-formylamidoaniline, m-propionylamidoaniline, p-methylaminoaniline, p-ethylaminoaniline, p-propylaminoaniline, p-butylaminoaniline, p-dimethylaminoaniline, p-diethylaminoaniline, p-cyclohexylaminoaniline, p-benzylaminoaniline, p-phenylaminoaniline, benzidine, dianisidine, 4,41-diaminodiphenylamine, 4,41-diaminodiphenylether, 4,41-diaminodiphenyl sulphide, 2-amino-5, 6, 7, 8-tetrahydronaphthalene, 1 - aminonaphthalene - 4 - methyl-1-aminonaphthalene, 4-methoxy-1-aminonaphthalene, 5-hydroxy-1-aminonaphthalene, 5-amino acenaphthene, N-methyl-, N-ethyl-, N-propyl- or N-butylaniline, N-methyl- or N-ethyl-p-methylaniline, N-methyl- or N-ethyl p-methoxyaniline, N-2-hydroxyethylaniline, N-2-hydroxyethyl-pmethylaniline or N-2-hydroxyethyl-p-methoxyaniline. Specified acids whose salts may be used as catalysts are hydrochloric, hydrobromic or hydriodic acid or sulphuric acid or phosphoric acid, organic acids such as aryl sulphonic acids, e.g. benzene or p-toluene sulphonic acid or trifluoroacetic acid.  Examples are given of the production of N-(2-cyanoethyl)-aniline from aniline and acrylonitrile; N-(2-cyanoethyl)-paminophenol from p-hydroxyaniline and acrylonitrile; bis-N,N1-(2-cyanoethyl)-p-phenylene-diamine from p-phenylenediamine and acrylonitrile; N,N1-bis-2-cyanoethylbenzidine from benzidine and acrylonitrile; 41(21-cyano-ethyl amino)-diphenylamine from p-phenylamino aniline and acrylonitrile; N-(2-cyanoethyl)-N-methylaniline from N-methyl aniline and acrylonitrile; similarly N-(2-hydroxyethyl)-aniline and N-butyl aniline may be cyanoethylated in the same way; N-(2-cyanoethyl)-o-methoxy-aniline from o-methoxy aniline and acrylonitrile. o-methylaniline, p-tert. butylaniline, p-dimethylaminoaniline, p-acetylaminoaniline, p-cyclohexylaniline, p-ethoxyaniline, o-hydroxyaniline, 1-naphthylamine, 5-aminoacenaphthene can be cyanoethylated in the same way.  By using double the amount of acrylonitrile and instead of methoxyaniline equivalent amounts of o-dianisidine, p,p1-diamino - diphenylmethane or p,p1-diamino-diphenylamine the corresponding N,N1-dicyano-ethylamino compounds are obtained.
Patent GB-905002-A (GB)
Title: Improvements in or relating to cooling systems for internal combustion engines
Inventor: LAMBURN ALAN SALISBURY
IPC: F01P7/08
Filed: 1959-08-21
Abstract: 905,002. Cooling cylinders. SMITH & SONS (ENGLAND) Ltd., S. Nov. 9, 1960 [Aug. 21, 1959], No. 28708/59. Class 7(2) [Also in Group XXVI] An engine air-cooling system comprises two impellors, one impellor 11 driven continuously by the engine and the other (not shown) being intermittently driven. Impellor 11 is fixed to an engine-driven pulley 16 which drives a shaft 10 having secured thereto a housing 45 arranged to surround an armature 44 which drives the second impellor through a shaft 21 and a hub 23. Magnetic particles in the chamber 37 are energized by an electro-magnetic coil in a surrounding chamber 32, under manual control or engine temperature-responsive control, to solidify the particles and thereby transmit the drive between the housing 45 and the housing 44. Alternatively, the second impellor may be driven by an electric motor which is switch-controlled in response to engine temperature changes.
Patent GB-159021-A (GB)
Title: Improvements in and relating to machines for gathering and loading coal and other materials
IPC: B65G65/00
Filed: 1919-11-19
Abstract: 159,021. Moody, W. E. Nov. 19, 1919. Conveying from working face in mines and the like.-Relates to conveyer apparatus particularly designed for gathering coal from the working face in mines and loading it into wagons. A portable frame 1, Fig. 4, on wheels or runners carries a gathering conveyer 6 having a depressed forward end 5 adapted to gather the coal, which is discharged from the raised rear end 7 on to a second conveyer 8 arranged parallel to the line of travel of the portable frame, the second conveyer discharging the coal into a wagon 53. The portable frame is fitted with a motor 16, Fig. 7, which drives the sprocket 12 of the endless-chain conveyer through gearing 24 and a clutch 26, and which also drives clutchable drums 32 over which pass anchored ropes 33 for hauling the conveyer along the working face.