baber/WOPTO huggingface dataset:
Patent GB-1432765-A (GB)
Title: Dynamic range modifying circuits
IPC: H03G9/02
Filed: 1972-05-02
Abstract: 1432765 Compressors and expanders DOLBY LABORATORIES Inc 30 April 1973 [2 May 1972] 26610/75 Divided out of 1432763 Heading H4R In compressors and expanders having a linear main path and a non-linear further path exhibiting limiting or conveying Specification 1,432,763 characteristics, these characteristics are respectively provided by a conveyer or a limiter in negative feedback or negative feedforward configurations relative to a parallel path. Fig. 12 shows a type 1 compressor having a linear main path 10 and a positive feedforward further path 12 with a limiter composed of a direct and a negative feedforward conveying path "CON", the filter 50 defining an operative passband. The gains of the two circuit paths in the further path 12 are the same at high signal level to produce cancellation, i.e. limiting, as opposed to reduction in type 3 compressors (Fig. 5a, not shown). Similarly the low level gains are the same in a conveyer formed of a negative feedforward limiter (Fig. 10, not shown). The loop gains are high in the remaining two configurations to effect cancellation as opposed to tucking in types 1 and 2 expanders.
Patent GB-1153325-A (GB)
Title: Improvements in or relating to Voltage Division in Mass Spectrometry
Inventor: GRAHAM REGINALD
IPC: H01J49/02
Filed: 1966-06-15
Abstract: 1,153,325. Variable resistance networks. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. 6 June, 1967 [15 June, 1966], No.26715/66. Heading H3U. A decade of a precision resistance box used with a mass spectrometer comprises, Fig. 2, a number of fixed resistors RF1 ... RF9 of different values which may be selectively connected between terminals T1, T2 by a switch S. Variable resistors RV1 . . RV9 serve as trimmers and enable the resistance box to be calibrated. In another embodiment (fig. 4, not shown) the fixed and variable resistors of each step of the decade are connected in parallel with each other. A number of such decades may be connected in series. In another embodiment, Fig. 6, four fixed resistors RF1 ... RF4 and four variable trimmer resistors RV1 ... RV4 are controlled by four ganged switches S1 . . . S4 having their contacts 0 . . . 9 connected as shown to produce the desired resistance. The resistance box of Fig. 6 may be calibrated, when connected in the energizing circuit of a mass spectrometer electrostatic analyser, in the following manner, it being assumed that only the two highest resistance value decades are as shown in Fig. 6 and the steps of resistance value correspond to 0À1 and 0À01. A known reference compound is fed into the mass spectrometer which is then set up for measurement of mass ratio by peak matching in known manner between two peaks with a known ratio of between 1À01 and 1À02. The decade box switches are set to their positions corresponding to the known mass ratio between two peaks from the reference compound corresponding to ion masses having a known ratio of between 1À01 and 1À02. The two peaks are matched by adjusting RV1 of the second decade. By using another two peaks of mass ratio between 1À02 and 1À04 RV2 of the second decade is adjusted. The adjustment of the second decade is completed by adjusting RV3 and RV4 while observing ratios of 1À04 1À08 and 1À08 1À10 respectively. The first decade can then be adjusted in a similar manner by using ratios of 1À10 1À20, 1À20 1À40, 1À40 1À80, 1À80 2À00 while adjusting RV1, RV2, RV3 and RV6 respectively.
Patent GB-207319-A (GB)
Title: Improvements in or relating to adjustable pivots for windscreens and the like
IPC: B60J1/04
Filed: 1922-10-04
Abstract: 207,319. Wilson, W. J. Oct. 4, 1922. Pivoting adjustments. -A sleeve 5 mounted on the pivot 1 of a windscreen joint has a groove formed on its inner surface to house a collar 9 rotatably mounted and movable transversely to lock the pivot members by a nut 12 screwed on to an extension 9 of the collar. The collar is housed between liners 14, 7 and the member 12 is formed with a pin 15 projecting through the sleeve 5 into engagement with the liner 7. The pin 1 may be serrated on its surface, but preferably only on the part remote from the clamping means. In a modification the liner 14 is dispensed with by employing a stepped pivot against the shoulder of which the collar 9 abuts.
Patent GB-369179-A (GB)
Title: Improvements in insulation for high potential electrical machines
IPC: H02K3/32
Filed: 1930-09-08
Abstract: 369,179. Dynamo-electric machines. SIEMENS-SCHUCKERTWERKE AKT.- GES., Siemensstadt, Berlin. Sept. 8, 1930, No. 26772. Convention date, Sept. 9, 1929. Void [Published under Sect. 91 of the Acts]. [Class 35.] Insulation.-In order that the potential between the conductors and the core of a high-voltage machine may be taken principally by the layers of insulation of greater radius of curvature, these layers are of material of low dielectric strength such as paper, and the layers having the smallest radius of curvature, where the electrostatic field is strongest, are of material of higher dielectric strength such as mica. Where a number of separately insulated conductors form a coil, the conductors are provided with insulation of high dielectric strength and the common enclosing sleeve is of material of lower dielectric strength such as paper.
Patent GB-816108-A (GB)
Title: Hydrocinnolones and process for their manufacture
IPC: A61K31/00
Filed: 1955-09-19
Abstract: The invention comprises 2 - R - 4 - cyano - 5 : 6 : 7 : 8 - tetrahydrocinnolones - (3), wherein R is an aliphatic hydrocarbon radical, particularly an alkyl radical containing at most 4 carbon atoms, and their preparation by reacting 4 - cyano - 5 : 6 : 7 : 8 - tetrahydrocinnolone - (3) with a reactive ester of an unsubstituted aliphatic alcohol such as an alkyl halide or a dialkyl sulphate.  In an example 2-methyl-4-cyano - 5 : 6 : 7 : 8 - tetrahydrocinnolone - (3) is prepared.ALSO:Pharmaceutical preparations comprise a 2 - R - 4 - cyano - 5 : 6 : 7 : 8 - tetrahydrocinnolone-(3), wherein R is an aliphatic hydrocarbon radical, in admixture with a solid or liquid diluent. Suitable excipients include water, gelatine, lactose, starches, magnesium stearate, talc, vegetable oils, benzyl alcohols, gums, polyalkylene glycols, petroleum jelly and cholesterol.  The preparations may be made up, for example, as tablets, dragees, salves, creams, solutions, suspensions or emulsions and they may contain auxiliary substances such as preserving, stabilizing, wetting or emulsifying agents, salts for regulating the osmotic pressure and buffers, and they may also contain other therapeutically valuable substances.  A tablet containing 2-methyl-4-cyano-5 : 6 : 7 : 8-tetrahydrocinnolone-(3), lactose, gelatine, starch, magnesium stearate and talc is described.
Patent GB-709656-A (GB)
Title: Improvements in electrodynamic sound receiving and transmitting apparatus
IPC: H04R9/10
Filed: 1951-11-15
Abstract: 709,656. Telephone instruments. LITTMANN, R. Nov. 15, 1951 [Nov. 24, 1950], No. 26798/51. Class 40 (4) A telephone receiver, microphone or small loudspeaker has a one-piece or multi-piece magnet 6 formed as an open ring. The magnet is secured with a pole disc 5 and a combined centre-pole 14 and bottom plate 14a in a casing 1 of thermo-plastic material. The ring magnet 6 is located by abutments 9, 10, Fig. 4, on the casing 1. One of the magnet pieces 7 may be replaced by a substitute arcuate, piece 13 of smaller radial width. The centre pole is cut away below the gap to provide extra clearance if the moving-coil diaphragm 3 should tilt. The leads from the coil are taken through the gap 11 and soldered respectively to the bottom plate 14a and to an annular contact disc 19, which are separated by an insulating disc 16.
Patent GB-1038183-A (GB)
Title: Polyethers
Inventor: STEPHENSON ROBERT JAMES
IPC: C08G65/34
Filed: 1963-07-08
Abstract: Polyethers prepared by condensing an alkylene glycol with a xylylene glycol, the glycols optionally containing inert substituents (e.g. alkyl, alkoxy or halogen) may be used as functional fluids, e.g. as viscosity index improvers.ALSO:Polyethers are prepared by condensing a xylylene glycol with an alkylene glycol in the presence of an acid catalyst.  The alkylene and xylene glycols may contain inert substituents (e.g. alkyl, alkoxy or halogen).  The terminal groups may be hydroxyl, alkyl or alkoxy. Specified catalysts are Lewis and sulphonic acids and acidic ion exchange resins.ALSO:Polyethers are prepared by condensing a xylylene glycol with an alkylene glycol in the presence of an acid catalyst.  The alkylene and xylylene glycols may contain inert substituents (e.g. alkyl, alkoxy or halogen).  The terminal groups are preferably hydroxy but may be alkyl or alkoxy. Specified catalyst are Lewis and sulphonic acids and acidic ion exchange resins.
Patent GB-227936-A (GB)
Title: Improvements relating to fire extinguishers
IPC: A62D1/06
Filed: 1923-10-26
Abstract: 227,936. Minimax, Ltd., and Gregory, G. A. Oct. 26, 1923. Chemicals and substances. - In fire-extingiushers of the acid-alkali type carbon tetrachloride is used with acetic acid in the inner container and a foam-producing substance, as quilla, liquorice extract, gum, or glue may be added to the alkali in the outer container. The extinguisher described in Specificaticn 207,861 may be employed.
Patent GB-154774-A (GB)
Title: Improvements in and connected with haulage and winding rollers or pulleys
IPC: B66D1/30
Filed: 1919-11-01
Abstract: 154,774. Davidson, A. Nov. 1, 1919. Guide rollers.-Circumferentially grooved haulage rollers have a barrel A fitting into recesses in end plates C, the end plates being, secured to the spindle D by split pins E. The recesses have Bats to ensure the barrel rotating with the spindle.
Patent GB-922719-A (GB)
Title: Apparatus for the generation of control signals
IPC: G05B19/14
Filed: 1959-08-06
Abstract: 922,719. Electric programme control systems. MASCHINENFABRIK A.G. MENZIKEN. Aug. 6, 1959 [Aug. 6, 1958], No. 26951/59. Class 38 (6). A copying lathe is controlled both by a template and by a loop of tape which determines at what points selected functions, such as speed changing, shall occur. The lead-screw 7 drives a saddle, Fig. 4 (not shown), which carries both the tool and the hydraulically actuated template follower. It also rotates a perforated disc 6 which interrupts light from a lamp 9 falling on a photo-cell 10 so as to generate a train of electrical pulses, the number of pulses being proportional to the lead-screw rotation. These pulses are counted by uniselectors 28, 39 and 50 which count units, tens and hundreds respectively and which each have 10 contact fingers engaging the punched tape 5. The uni-selectors count in either direction according to the direction of rotation of the lead-screw, this being detected by a change-over switch 15 frictionally coupled to the lead-screw 7 so as to control reversing relays energizing the appropriate stepping magnet on each uni-selector. When the marked contact on each uni-selector corresponds with the holes spaced across part of the width of the tape 5 forming a particular line of the tape, relays 55, 56 and 57 are energized to complete the supply circuit to a contact plate 58 which lies beneath the remaining part of the width of the tape. This part of the tape is punched to selectively energize relays R 1  . . . R 14  which control such functions as starting the chuck spindle, energizing a rapid feed motor, changing the speed of the chuck &c. Relay 14 is used to shunt the counter-operated contacts 55 1 , 56 1 , 57 1  and so enable the tape loop to be successively stepped forward to the starting position. The solenoid 60, which is also energized from the plate 58, controls the tape advance through a ratchetwheel 63. An auxiliary relay 80 is also provided to step the programme tape in response to a device 77 which is selected by R13 and which may be a timer or a screw-cutting device.
Patent GB-674003-A (GB)
Title: Improvements in or relating to methine dyestuffs and photographic emulsions containing the same
Inventor: KENDALL JOHN DAVID
IPC: C09B23/01
Filed: 1949-10-20
Abstract: Dyes of the general formula <FORM:0674003/IV (c)/1> wherein R1 is alkyl, R2 and R3 are alkyl o aralkyl, n is 0 or 1, and D is the residue of a 5- or 6-membered heterocyclic ring system of the type used in cyanine dyes, are prepared by reacting a compound of the general formula <FORM:0674003/IV (c)/2> with a compound of the general formula <FORM:0674003/IV (c)/3> wherein X is an acid radicle and Q is an alkyl thioether, amino, or substituted amino group.  The condensation may be effected in the presence of a basic condensing agent.  The methyl derivative corresponding to the compound of the last-mentioned general formula may be reacted with triethyl trithio-orthoformate and the condensation with the compound of the second general formula effected without isolating the reaction product.  Ethyl 6 - (3 - methyl - 2 : 3 - dihydrobenzthiazolylidene - 2) - 3 - ethoxy - 2 - cyano - 2 : 4 - hexadienoate is prepared by fusing 2-methylbenzthiazole with methyl p-toluenesulphonate, adding triethyl trithio-orthoformate and acetic anhydride and refluxing, distilling off the acetic anhydride in vacuo, washing the residual oil with ether and dissolving in ethyl alcohol, adding ethyl 2-cyano-3-ethoxy-2-butenoate and refluxing.  Ethyl and methyl 6-(3-methyl-2 : 3-dihydrobenzthiazolylidene - 2) - 3 - methoxy - 2 - cyano - 2 : 4 - hexadienoate, methyl 6 - (3 - methyl-2 : 3 - dihydrobenzthiazolelidene - 2) - 3 - ethoxy - 2-cyano-2 : 4-hexadienoate, ethyl 6-(1 : 3 : 3-trimethyl - 1 : 2 - dihydroindolylidene - 2) - 3 - ethoxy-2 - cyano - 2 : 4 - hexadienoate, ethyl 6 - (1 : 3 : 3 - trimethyl - 1 : 2 - dihydroindolylidene - 2) - 3 - methoxy - cyano - 2 : 4 - hexadienoate, ethyl 6 - (3-ethyl - 2 : 3 - dihydrobenzthiazolylidene - 2) - 3 - ethoxy - 2 - cyano - 2 : 4 - hexadienoate, ethyl 6 - (3 - ethyl - 2 : 3 - dihydrobenzthiazolylidene - 2) - 3-methoxy - 2 - cyano - 2 : 4 - hexadienoate, ethyl 6 - (3 - methyl - 2 : 3 - dihydrobenzoxazolylidene - 2) - 3 - ethoxy - 2 - cyano - 2 : 4 - hexadienoate, methyl 6 - (3 - methyl - 2 : 3 - dihydrobenzoxazolylidene - 2) - 3 - methoxy - 2 - cyano - 2 : 4 - hexadienoate, ethyl 6 - (I - methyl - 1 : 4 - dihydroquinolylidene - 4) - 3 - ethoxy - 2 - cyano - 2 : 4 - hexadienoate, methyl - 6 - (1 - methyl - 1 : 4 - dihydroquinolylidene - 4) - 3 - methoxy - 2 - cyano - 2 : 4 - hexadienoate, ethyl 6-(3-ethyl-2 : 3-dihydro-4 : 5-benzbenzthiazolylidene - 2) - 3 - ethoxy - 2 - cyano - 2 : 4 - hexadienoate, and methyl 6-(3-ethyl-2 : 3-dihydro - 4 : 5 - benzbenzthiazolylidene - 2) - 3 - methoxy - 2 - cyano - 2 : 4 - hexadienoate are similarly prepared.  According to the Provisional Specification, the methyl group in the first reactant may be replaced by a group -CH2R4, wherein R4 is an alkyl, aralkyl, or aryl group, giving rise to dyes in which the central methine group of the pentamethine chain is substituted by the group R4, and the group R3 may be an aryl group.
Patent GB-1073719-A (GB)
Title: Resist printing method for hydrophobic fibres
IPC: D06P3/54
Filed: 1964-06-30
Abstract: Materials composed of hydrophobic fibres e.g. acetate, nylon, polyester, polyacrylonitrile, polyvinyl chloride, polyolefin or mixtures thereof are resist printed by a process which comprises applying to the material (1) a disperse dye which contains in each molecule at least two radicals with unshared pairs of electrons and which are capable of forming a metal complex and (2) a metal compound capable of forming a chelate compound with the disperse dye, the disperse dye being applied to the whole surface of the material and the metal compound either being applied to the material in areas where dyeing is not desired or being applied over the whole surface of the material from acid medium which inactivates the chelate forming properties of the metal compound and an alkaline resist being printed in the material in areas where dyeing by the disperse dyestuff is not required and the material is then heated so as to form the complex where dyeing is not required and to fix the dyeing in the other areas.  The disperse dye is applied by any standard method, the heat treatment may be by dry heat or steaming.  Coloured resist prints are obtainable by incorporating a dyestuff in the resist print paste e.g. vat, disperse, direct and azoic dyes.  The alkaline resist print may be applied first followed by treatment with the disperse dye-acid-metal salt liquid.  Complex formation in alkali is at pH value of 5 or above.
Patent GB-604691-A (GB)
Title: Sliding clasp fasteners
IPC: A44B19/04
Filed: 1945-10-16
Abstract: 604,691. Sliding-clasp fasteners. PLASCO, Ltd. (Crown Fastener Corporation). Oct. 16, 1945, No. 27109. [Class 44] In a sliding-clasp fastener, the coupling parts of each element present, in the plane normal to its longitudinal axis a valley or recess to provide a socket on one surface of the element, and a ridge or salient on the opposite surface, adapted to seat in the socket of an adjoining element, to prevent transverse separation, and the opposed surfaces of the elements converge from the centre towards the side surfaces to provide clearances allowing flexure of the fastening. Fig. 3 shows a perspective view of one element, on the upper face of which the inclined surfaces form a valley or recess 30, while the surfaces of the lower face form a ridge or salient 31, so that the cross-section of each element is of wide V-shape, while each half or wing tapers from the centre to the outer edge, as shown in Fig. 5. The clearances thus formed allow longitudinal flexing of the fastener when closed. In addition, valleys and ridges extend across the elements to prevent separation by a pull in the plane of the stringers. In the form shown in Fig. 7, one portion 43 of the element extends at right angles to the plane of the stringers, while the portion 42 extends at an angle thereto. Fig. 8 is a cross-section of a form in which the surfaces are curved. In the form shown in Figs. 10 and 11, the upper and lower surfaces are continuously curved across the element, and flexing can take place as shown in Fig. 10 by sliding of the surfaces on each other. Further engagement against transverse separation may be provided by off-setting the side portions 26 and 27, Fig. 12, forming steps 29 on the mid-line of the elements. Figs. 14 and 16 show an assembly and a single element respectively of a further modification, in which the elements are set in herring-bone fashion on the tapes, and their upper and lower surfaces are curved in the plane of the tapes. Specifications 563,843 and 567,466 are referred to.
Patent GB-422463-A (GB)
Title: Process for the decomposition of siliceous aluminiferous minerals
IPC: C01F7/28
Filed: 1934-09-20
Abstract: The extraction of clays, kaolins, and other siliceous aluminiferous minerals with aqueous sulphurous acid at temperatures of 40--90 DEG C. is effected by treating the stagnant initial material with a flowing stream of acid, the rate of flow being such that no basic aluminium sulphite is deposited.  In operating the process, the acid may be passed on the counterflow principle through a series of decomposing vessels the temperature of which gradually decreases, and an intermediate saturation of the decomposing liquor with sulphur dioxide may be effected during its travel through the apparatus. Examples are given.
Patent GB-640907-A (GB)
Title: An improved method of producing normally gaseous fuels from carbon-containing materials
IPC: C07C1/04
Filed: 1946-09-10
Abstract: Hydrocarbon fuel gas is produced by passing a gas mixture containing carbon monoxide and hydrogen at conversion conditions conducive to the predominant formation of gaseous hydrocarbons, particularly methane, through a turbulent, dense, fluidized hydrogenation catalyst, said gas mixture being preheated to substantially the conversion temperature prior to its entry into the catalytic zone from which heat is withdrawn to maintain the desired temperature level, and normally gaseous hydrocarbons being recovered.  The feed gas may be obtained by gasification of solid carbonaceous material such as coal, coke, shale and the like, especially the residue from a carbonization process operated according to the fluidized solids technique.  Hydrogen may be added to increase the ratio to carbon monoxide to from 1.3 to 3 : 1.  The heat of solids removed from the gasification zone may be used to preheat the said feed gas.  This preferably enters the base of the converter, although part may be fed at a higher level, and products are withdrawn overhead, an enlarged separating space and mechanical or other separators for catalyst being provided. Suitable catalysts are iron group metals, and oxides or sulphides of Groups 5 and 6, alone or on carriers, especially nickel on kieselguhr.  Particles are preferably of less than 150, e.g. 5-100 microns, with not more than 60 per cent of 0-20 microns. Superficial gas velocities of 0.1-2 ft./sec. and pressures up to 2000 p.s.i. are suitable.  Temperature varies from 500-700 DEG  F. Cooling medium may flow within the converter or fluidized catalyst may be withdrawn by standpipes, passed through a heat exchanger or directly contacted with cooling gas, and returned.  At higher reaction temperatures, carbon must be burnt off from the catalyst as by passing it, suspended in air, to an oxidation chamber of similar construction to the converter, if desired reducing with hydrogen in a further chamber, and returning it to the converter. Two or more converters may be used in succession with intermediate removal of water or part of the product gas may be recycled after water removal. Carbon dioxide may also be removed from the product.  The carbonization of coal, fluidized in air or other gas, at 700-1200 DEG F., removal of fluidized coke and gasification with oxidizing gas and steam in fluid state is described.  The heat of the catalyst or of the conversion product is used to preheat the feed gas.  This may be supplemented by a coal gas obtained in the carbonization process.  In an example, finely ground coal is fluidized in coal gas and coked at 1100 DEG  F. by injecting a stream of ash at 1800 DEG  F. from a separate combustion chamber.  The coke is in part suspended in steam and passed to a water gas chamber and in part suspended in air and fed to the said combustion chamber from which hot ash is recycled to the coking chamber and to the water gas chamber.  Purified gases from the coking and water gas chambers are combined and used as feed for the catalytic converter.