baber/WOPTO huggingface dataset:
Patent GB-1044809-A (GB)
Title: Improvements in rotary switches
Inventor: CARTWRIGHT JOHN ANTHONY
IPC: H01H9/16
Filed: 1964-03-19
Abstract: 1,044,809. Mechanical switches, without quick action. PAINTON & CO. Ltd. March 16, 1965 [March 19, 1964], No. 11731/64. Heading H2B. A thumbwheel switch includes a rotary switching member 20 with a light-transmitting rim 21 (Figs. 5, 6, not shown) bearing markings signifying different switch positions, such markings being illuminated from behind by a light source mounted outside of and shining through the rim 21, the markings being visible through a window 8 of the front plate 5 of the switch casing 1, 4 (Fig. 1, not shown). The rim 21 is transparent or translucent, and its interior surface is toothed at 19 (Fig. 7, not shown). Rim 21 is stepped to provide a notched portion 23 of smaller radius which is engaged by a pair of spring detents 43 to locate member 20 in each switch position. Two bulbs in holders 50 provide illumination. Member 20 carries two spring-pressed bridging contacts 34 (Fig. 3, not shown) with three feet 39 movable over a printed circuit board 38. A screw 36 adjusts the pressure of each spring 32 on its contact 34. The spindle 28 of member 20 has press-fitted thereon the thumbwheel 61 (Figs. 2, 3, not shown), the casing part 3 having a recess 60 to accommodate thumbwheel 61. Casing 1 is in two metal parts 2, 3, screwed together through threaded tubular posts 4, 4<SP>1</SP> (Fig. 3, not shown) and providing a front plate 5, with window 8, and a rear plate carrying a plug connector 15. Lugs 6 receive mounting screws 7 (Figs. 1, 2, not shown), for mounting switch casing 1 in a panel.
Patent GB-562332-A (GB)
Title: Improvements in and relating to resinous condensation products
IPC: C08G12/30
Filed: 1942-08-21
Abstract: Resinous condensation products are prepared by heating together an aldehyde and 2-semicarbazido - 4,6 - diamino 1,3,5 - triazine under alkaline conditions.  The triazine is prepared as described in Specification 558,051.  The aldehydes, the substances which may be used to modify the product, the compositions formed therefrom and the uses to which they may be put are all as described in Specification 562,373.  Specifications 542,932, 554,195; and 9244/41, 10917/41 and 1458/42 (all as open to inspection under Sect. 91) are referred to.
Patent GB-1041853-A (GB)
Title: Improvements in or relating to polyesters
IPC: C08G63/80
Filed: 1963-03-26
Abstract: <PICT:1041853/C3/1> The molecular weight of a linear polyester prepolymer powder is increased by (a) passing a hot inert gas through the prepolymer in a polymerization zone at a rate sufficient to maintain a fluidized condition, (b) purifying inert gas removed from the zone by separating particles of powder from it and condensing the vapours present and thereafter passing the gas through a molecular sieve and (3) reheating the purified gas and recirculating it to the fluidized polymer. The inert gas is preferably supplied to the polymerization zone at a rate of from 2 to 8 times the minimum fluidization rate and the temperature in the zone is preferably maintained at 15 DEG  to 75 DEG  C. below the melting-point of the prepolymer. The molecular sieve is preferably a zeolite capable of removing particles with a diameter of 3 to 20 Angstroms.  The polyester may be poly-(ethylene terephthalate), poly(1,4 - cyclohexylenedimethylene terephthalate), poly(1,4-tetramethylene 2,6-naphthalene dicarboxylate), poly-(1,5-pentamethylene sulphonyl - 4,41 - dibenzoate), copoly(ethylene terephthalate/isophthalate) and copoly(1,4-cyclohexylenedimethylene terephthalate/adipate).  The drawing shows a flow diagram for the preparation of poly(ethylene terephthalate).  The polymerization zone may be provided with agitators, wall scraping devices, screens or baffles, and the gas may be introduced through a single distributer near the bottom of the zone or through a plurality of vertically spaced distributers. The zone may be a single zone which may be divided into a plurality of vertically spaced sub-zones or it may comprise a plurality of separate polymerization vessels through which the powder passes downwardly in countercurrent to the inert gas, the latter having substantially all particles of powder removed from it prior to passage from one vessel to the next.  The separator is preferably a cyclone separator.
Patent GB-1276765-A (GB)
Title: Photographic material
Inventor: SMITH MALCOLM
IPC: G03C1/42
Filed: 1970-03-12
Abstract: 1276765 Silver halide materials EASTMAN KODAK CO 12 March 1970 11841/70 Addition to 1181508 Heading G2C Photographic materials contain (1) a silver halide emulsion layer, (2) a developing agent, and (3) an interpolymer of (a) an alkyl acrylate or methacrylate, (b) a monomer of formula: CH 2  = C(R 4 )-CO-O-R 3 -SO 2 OM (in which R 4  is H or alkyl; R 3  has valencies on different C atoms and is hydrocarbon or aliphatic hydrocarbon interrupted by O and/or S; M is cation) and (c) a monomer of formula: CH 2  =C(R 1 )-COR 2  (in which R 1  is H or alkyl and R 2  is -alkylene-O-CO-CH 2  X; or R 1  is -alkylene-O-CO-CH 2  X and R 2  alkyl, cycloalkyl or aryl; X is CN or aliphatic acyl) as defined in claim 3 of Specification 1181508 or claim 3 of Specification 1215610, in which at least some of the groups M are hydrogen. The material comprises in order either (A) a support, a layer of the interpolymer, and a layer of silver halide emulsion containing the developing agent, (B) a support, a layer of the interpolymer containing the developing agent, and the emulsion layer, or (C) a support, a layer of the interpolymer, a layer containing the developing agent, and the emulsion layer. The polymer is preferably mixed with gelatin and Na formaldehyde bisulphite. The developing agent is preferably hydroquinone optionally together with a 3-pyrazolidone. The exposed material may be activated with aqueous alkali and the image formed stabilized (e.g. with an aqueous solution containing NH 4  CNS, acetic acid and 3-mercapto-1, 2, 4-triazole.
Patent GB-1192484-A (GB)
Title: Improved Magnetic Focusing Systems for Discharge Tubes
IPC: H01J23/087
Filed: 1968-03-11
Abstract: 1,192,484. Travelling wave tubes. THOMSON-CSF. 11 March, 1968 [14 March, 1967], No. 11851/68. Heading H1D. In a periodic permanent magnet focusing system-eg. for a travelling wave tube-having axially magnetized ferrite members 5 and polepieces 6, the reduction of focusing field with temperature increase due to the temperature dependence of the ferrite material is compensated by the use of an inner sleeve 4, within which the travelling wave tube envelope may be received, the sleeve shunting the surrounding focusing system, and being of a material the induction of which decreases with increase of temperature in such a manner as to maintain the focusing field at the axis substantially constant. The material of sleeve 4 may be 25% to 35% nickel and 75% to 65% iron.
Patent GB-575603-A (GB)
Title: Improved process for the production of isobutane
IPC: C07C5/27
Filed: 1942-08-24
Abstract: Isobutane is produced by isomerization of liquified normal butane at about 150 DEG  F. with aluminium chloride, equal to 35-40 per cent by weight thereof, in contact at any one time and maintained as a slurry, a chlorine-containing promoter being present in an amount of 3-9% by weight of the butane, the average time of contact being 1-4 hrs.  Free hydrogen equivalent to a partial pressure of 100-400 p.s.i. may be present.  The aluminium chloride may be powdered or granulated or deposited on such carriers as pumice, silica, alumina, and active carbon preferably of 10-25 mesh size.  The promoter may be hydrogen chloride, chlorine, carbon tetrachloride, chloroform or a lower alkyl chloride.  Pressure is generally about 400 but may be up to 1000 p.s.i.  Agitation is effected by circulating pumps, jets or mixers.  Any paraffinic C4 mixture relatively free of olefins may be used.  Pretreatment to remove water, and sulphur compounds may be effected as with alkali, sulphuric acid or aluminium chloride.  The reaction product may be shock chilled, precipitated aluminium chloride being filtered off, stripped of promoter, and fractionated to separate isobutane from normal butane which is recycled.  One or more series of reactors may be used, employing partially spent catalyst from a previous batch operation in a later.  In an example, liquefied butane with 37 per cent by weight of aluminium chloride powder, and 9 per cent of hydrogen chloride is reacted in a turbo mixer at about 150 DEG  F. and 300 p.s.i. for 2 hrs.  After settling, two-thirds of the product is withdrawn, and fresh butane and hydrogen chloride added to maintain the original butane to catalyst ratios. The procedure is repeated to a total of 72 runs, the average time of reaction being about 3 hrs.  The Specification as open to inspection under Sect. 91 comprises the use of a reaction temperature of 150-175 DEG  F. and vapour phase operation, and also includes a fixed catalyst bed operation wherein the butane feed flows through a bed of aluminium chloride, alone or with a carrier or an inert material such as sand.  The proportion of promoter in this case is 13-25 per cent, and reaction time about 1 hr.  Elongated tubular reactors of about 1/2 -8" diameter and from a few up to 14 feet may be used, with at least semi-continuous addition of fresh catalyst at the top and removal of used catalyst at the bottom.  In a further Example, liquid butane is continuously charged to an elongated reactor of 1.5" diameter at a rate of 0.5 vols. per vol. of catalyst per hr. giving a contact time of 1 hr.  This subject-matter does not appear in the Specification as accepted.
Patent GB-289804-A (GB)
Title: Improvements in or relating to magnet systems for converting electrical into acoustic oscillations and vice versa
IPC: H04R11/00
Filed: 1928-04-23
Abstract: 289,804. Naamlooze Vennootschap philips' Gloeilampenfabrieken. May 2, 1927, [Convention date]. Magnetic instruments.-A balanced ferromagnetic system for converting electrical into acoustic oscillations or vice versa has an air gap or paramagnetic material, as distinct from ferromagnetic material, provided in the path of the permanent flux to cause a high reluctance therefor. With such an arrangement weak springs are sufficient to return the armature to its normal position. Fig. 1 shows a balanced armature system in which the armature 14 is located between pole pieces 12, 13 separated from a permanent magnet 11 by air gaps 17. The armature is pivoted at 15 and surrounded by immovably arranged speech windings 18. In this arrangement the total amount of the magnetic fluxes produced in the poles of like nature is substantially constant, whilst the alternating flux produced by the current in the coil meets with a normal reluctance. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a construction, Fig. 1, (Cancelled) in which a permanent magnet 1 carrying the speech windings 8 is provided with pole pieces 2, 3 between which is an armature 4 carried by a weak spring 5 clamped at 6. Small air gaps 7 are provided between each pole piece and the magnet. A wide air gap is preferably provided between the armature and pole pieces. This subject-matter does not appear in the Specification as accepted.
Patent GB-797395-A (GB)
Title: Improvements in or relating to potential measuring apparatus for ensuring low contact resistance between movable contact surfaces
Inventor: AUGHTIE FRANK
IPC: G01K7/02
Filed: 1955-04-25
Abstract: 797,395. Voltage measurement. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. April 25, 1956 [April 25, 1955], No. 11896/55. Class 37. [Also in Group XXXVIII] In measuring successive low potentials selected by moving contact switches, errors due to indeterminate contact resistance are removed before each measurement by passing through the appropriate switch contacts a current pulse from a charged capacitance or an impulsed induction coil to reduce the contact resistance to a stable minimum value. Plural thermocouples 10 are successively connected by uniselector 12 to a potentiometric voltage recorder 15 through an inductance capacitance low-pass filter 16, 17 while capacitance 18 is alternately charged from high voltage supply 19 and discharged in parallel with the uniselector contact and its series thermocouple by relay contacts R1, R2, the discharge pulse stabilizing the contact resistance at a low value and being excluded from the recorder by the filter. Rotary cams 23, 24 are phased to continuously and successively close and open contacts 21, 22, whereby the uniselector magnet USM is first impulsed to select a measurement thermocouple and relay R is then operated to discharge the impulse capacitance over contacts R1, R2 and to reconnect the recorder. If the latter is robust the low-pass filter may be eliminated.
Patent GB-1089578-A (GB)
Title: Improvements in or relating to fuel cells
IPC: H01M4/90
Filed: 1966-03-18
Abstract: 1,089,578. Fuel cell catalysts. ALLISCHALMERS MANUFACTURING CO. March 18, 1966 [March 31, 1965], No. 12052/66. Heading H1B. The compound Ni 3 M is used as a fuel cell catalyst. M is one or more of Ti, V, Ta, Nb, Zr. The catalyst may be carried by, or intermixed with, a thermoplastic material.
Patent GB-581173-A (GB)
Title: Improvements in band pass filters for ultra-high frequencies
IPC: H01P1/20
Filed: 1942-08-27
Abstract: 581,173. Resonator circuits. STANDARD TELEPHONES & CABLES, Ltd., and WILLOUGHBY, E. O. Aug. 27, 1942, No. 12109. [Classes 39 (i), 40 (iii), and 40 (v)] Two coil-less resonators resonant at the same frequency are coupled together inductively at current anti-nodal points and are designed so that the equivalent series impedances at the coupling point have the same ratio of reactance to resistance so as to give a band-pass effect. In one of the applications described, Fig. 2, one of the resonators 1, 2 forms part of a velocity modulation tube of the kind described in Specification 537,490 for generating oscillations having wave lengths less than 20 cms. and the other 8, 9 terminates in a conical autenna, each being of constant characteristic impedance and a quarter wave-length long, the coupling being by means of radial portions 23, 34 as shown in Fig. 3. With this arrangement, which presents a constant impedance over the pass-band to the energy-extracting gap of the tube, the generated frequency can be varied simply by varying the accelerating voltage without modifying the dimensions of the resonator and the device can thus be used in an altimeter system of the reflection type operating on the known frequency-sweep principle. The invention may also be employed on the receiving circuit of such a system. In one such arrangement, Fig. 5 (not shown), a conical aerial is coupled to a length of coaxial line having a piezo-electric crystal connected at a current antinode. Where a straight aerial is used, the line coupled to it is stepped as shown in Fig. 6 and dimensioned in accordance with Z Z1 the relation -=- where these terms are the Z<1> Z1<SP>1> characteristic impedances of the portions indicated on the drawing.
Patent GB-1508371-A (GB)
Title: Coke ovens
IPC: C10B21/06
Filed: 1975-03-24
Abstract: 1508371 Compound coke oven SIMONCARVES Ltd 24 March 1975 [4 April 1974] 12110/75 Heading F4B A coke oven battery which can be heated by either lean gas or rich gas has twin heating flues 11, 12 located in rows between oven chambers 10. Each pair of flues is divided from the next pair by a continuous wall 14 and the flues of each pair has a non-continuous cross wall 15. The gaseous combustion media are burned in one flue of each pair for a first heating period and after this combustion media is supplied to the second of each pair of flues so that the direction of gas flow reverses. Below the flues and oven chambers and extending parallel therewith are regenerators 23 alternating with regenerators 24. Regenerators 23 are used to preheat combustion air and regenerators 24 used to preheat lean gas when this is being used or to preheat combustion air when rich gas is being used. Rich gas is supplied from a duct 19 to jets 22 in the base of the heating flues. Lean gas is supplied from a duct 25 and passes through valves to sole flues 26 and into the regenerators 24. Combustion air enters regenerators 23 through further sole flues 26 and flaps 39 are operated to control the supply of combustion air to the particular sole flues in use which will depend on the type of heating gas being used and which heating cycle is in operation. Waste heat valves 27 control flow of gases to the waste heat duct 28. The flue walls 14, 15 contain header flues 32 and heated combustion air from regulators 23 is fed to the heating flues through discharge ports at different levels 33, 34, 35. Every second header flue along a row is connected to the same regenerator 23 while the remaining header flues of that row are connected by other ducts 31 (Fig. 4) to the next adjacent regenerator 23. During one half cycle, half the header flues and regenerators 23 supply the preheated combustion air while the remaining header flues receive part of the exhaust gases which are fed through ducts 31 for reheating the remaining regenerators 23. The function of the header flues and regenerators is reversed during the other half cycle. Ports 29 in the base of heating flues 11, 12 are connected by ducts 30 to regenerators 24 (Fig. 4). The port of one flue of a pair is connected to one regenerator 24 while that of the second flue of the pair is connected to the next adjacent regenerator 24, so that while one regenerator 24 is preheating gas or combustion air the next regenerator is absorbing heat from the exhaust gases. The arrangement is such that the gas flow in two adjacent rows of flues on either side of an oven chamber is in the opposite direction (Fig. 4).
Patent GB-671834-A (GB)
Title: Improvements in potato-harvesters
IPC: A01D15/04
Filed: 1949-06-06
Abstract: 671,834. Potato harvesters. RANSOMES, SIMS & JEFFERIES, Ltd., and HENDERSON, W. M. Sept. 6,1950 [June 6, 1949], No. 12144/49. Class 6(iii) A potato harvester comprises a front scoop 22 arranged to work along the base to a rear scoop 25, the scoops being oscillated to a rear scoop 25, the scoop being oscillated in an out of phase relation to remove the earth and being provided with spring tines 22a, 25a respectively. The scoops 22, 25 are secured to shafts 10, 17 by means of arms 21, 24 and brackets 20, 23 respectively, the shafts 10, 17, being pivotally mounted on pins 12, 19 by brackets 11, 18 respectively. A lever 9 fixed to the shaft 10 is oscillated by a lever 6 connected to a crank 5 driven from a tractor power shaft through a coupling 1 and causes oscillation of the front scoop 22. The rear scoop is oscillated by a lever 16 mounted on the shaft 17 and connected by a link 13 to the lever 9. The arrangement is such that the scoops move towards and away from each other.
Patent GB-394464-A (GB)
Title: Improvements in and relating to packets or containers for articles of food, or other goods
IPC: B65D75/54
Filed: 1932-04-27
Abstract: 394,464. Packets and similar containers for articles of food &c. O'CONNOR, E. J. and FOWLER BROS., Ltd., 65, Jamaica Road, Bermondsey, London. April 27, 1932, No. 12150. [Classes 18 and 94 (i).] A packet or container of the kind comprising a tubular body a formed of flexible transparent material, for example that sold under the registered Trade Mark " Cellophane," the ends being closed and secured to retain the goods, has at each end an internal disc b of cardboard or other rigid material together with an outer seal or label d at one or each end. The body is formed upon a former, its overlapping edges x being secured by suitable adhesive. A number of single packets may be contained in an outer or larger packet of flexible transparent air and moisture proof material, as shown in Fig. 5.
Patent GB-1071532-A (GB)
Title: An improvement in or relating to transport containers for coke and similar bulk materials
Inventor: BATTYE TERENCE
IPC: B65D88/12
Filed: 1965-03-23
Abstract: 1,071,532. Skips. COKE CONTAINERS Ltd. March 21, 1966 [March 23, 1965], No. 12220/65. Heading B8H. A transport container 10 for bulk materials has two bottom doors 18 which are held closed by lifting chains or cables which are attached to laterally projecting lugs 22 on the doors. The container is set down over an emptying space and supported brackets 20, further lowering of the lifting means allows the doors to open. The chains or cables are normally attached to a lifting beam which may be housed in a recess 32. Corner plates (26), Fig. 4 (not shown), prevent material from lodging on the edges of the doors when they are open.
Patent GB-263018-A (GB)
Title: Improvements in the manufacture of dinitrotoluene
IPC: C06B25/04
Filed: 1926-05-12
Abstract: 263,018. British Dyestuffs Corporation, Rodd, E., H., and Everatt, R. W. May 12, 1926. Dinitrotoluene setting at temperatures below 20‹ C. is obtained by nitrating in known manner a mixture of mononitrotoluenes containing less than 45 per cent of m-nitrotoluene, crystallizing the product at a suitable temperature, and separating the liquid fraction from the solid. The crystallization temperature depends to some extent on the proportion of m-nitrotoluene in the initial material, but according to examples the nitrated product from a mixture of mononitrotoluenes containing 33 per cent of m-nitrotoluene is crystallized at 18-20‹ C. or at 25‹ C. Specification 17128/13 is referred to.
Patent GB-841927-A (GB)
Title: Improvements in or relating to a process for the production of disperse dyestuffs ofthe anthraquinone series
IPC: C09B1/51
Filed: 1958-04-17
Abstract: Cellulose esters, cellulose ethers, polyvinyl ethers and polyacrylonitriles may be dyed in the mass with dyestuffs of the formula:-  <FORM:0841927/IV(a)/1> wherein A is an anthraquinone radical which may be further substituted by non-water-solubilizing groups, one B is hydrogen or alkyl and the other B is hydrogen, X is an alkyl group which may be substituted, cycloalkyl or aralkyl, n is one of the integers 1, 2, 3 or 4 and wherein the amino groups of the anthraquinone radical carrying the carboxyalkyl radicals are in the a - positions.  In an Example (8), acetyl cellulose in acetone-methanol is dyed in the mass with 1-(21-carboxyethylamino)-2-bromo-4-phenylamino anthraquinone to give a bright blue mass which is spun.ALSO:Disperse dyestuffs of the anthraquinone series of the formula:  <FORM:0841927/IV (c)/1> where A is an anthraquinone radical which may be substituted by groups other than water-solubilising groups, one B is hydrogen, methyl or ethyl and the other B is hydrogen, X is alkyl which may be substituted, cycloalkyl or aralkyl, n is 1, 2, 3 or 4, and where the amino groups carrying the carboxyalkyl radical are in the alpha positions of the anthraquinone radical, are made by reacting in sulphuric acid solution anthraquinone compounds having one or more primary amino groups in the alpha positions with alkylene-carboxylic acids with not more than 5 carbon atoms carrying in the alpha position a double bond capable of addition, or functional derivatives thereof such as amides, esters or nitriles, these reactants being in the proportions of at least one mol of acrylic compound per amino group to be reacted and at a reaction temperature of between 20 DEG  and 130 DEG C., so that at least one primary amino group in the alpha position is reacted, and in esterifying the carboxylic acid group or groups of the resultant carboxy-alkylamino anthraquinone.  When the anthraquinone compound contains exchangeable groups these may be exchanged for non-water-solubilizing groups after the reaction with the alkylene-carboxylic acid, in the case of exchangeable sulphonic acid groups before the esterification but with exchangeable non-water solubilizing groups before or after the esterification provided no saponification occurs.  The dyestuffs dye or print fibres of cellulose esters, cellulose ethers, linear aromatic polyesters, polyamides, polyurethanes and polyvinyl esters orange, red, green, blue and violet shades and colour shaped articles of cellulose esters, cellulose ethers, polyvinyl esters and polyacrylonitrile in the mass.  Many examples are given.