baber/WOPTO huggingface dataset:
Patent GB-1514433-A (GB)
Title: Balanced dual output mixer circuit
IPC: H03D1/24
Filed: 1976-09-16
Abstract: 1514433 Frequency changers; demodulators MOTOROLA Inc 16 Sept 1976 [6 Nov 1975] 38465/76 Headings H3F and H3Q A balanced circuit for mixing two input RF signals and producing either an AF or an RF at separate outputs, comprises first circuit means 11 for receiving a first RF signal at an input terminal 15, second circuit means 12 having coil windings 24, 27 and means 22 for producing an RF output proportional to the difference between signals in the two windings, capacitive coupling means 36, 37 between the windings and an input terminal 35, RF choke means, e.g. 40, 41, for coupling a winding to an audio output terminal, and third circuit means 13 coupling the first circuit means to the said windings and producing sum and difference frequencies, the second RF input being connected either at terminal 35 (as shown) or at a point of symmetry 19 of 11, 35 then being coupled to a reference potential, e.g. earth. The mixer circuit may be used in both the receiving and transmitting modes of a single sideband radio. In the receiving mode, 34 represents the modulated IF signal and 14 is a local oscillator having the intermediate frequency. The difference frequencies are available at the AF output terminals 38, 39. In the transmitting mode 34 again represents a modulated IF signal but 14 is a local oscillator frequency such that the difference LO-IF corresponds to the transmit frequency, the modulation being transferred thereto, and the output being available at terminals 23, 23.
Patent GB-303373-A (GB)
Title: Machine for accounting operations
IPC: B41L5/00
Filed: 1928-12-31
Abstract: 303,373. Etablissements J. B. Vico. Dec. 30, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Hand-stamps. - A handstamp is provided with a plunger 13, Fig. 4, which actuates a pawl and ratchet device for feeding an inkribbon 14 in front of the printing-rollers 9, and a pencil 16 pivoted at the bottom of the stamping-head automatically traces brackets or like signs.
Patent GB-369627-A (GB)
Title: A process for the production of seamless tubes on a pilger rolling mill and apparatus therefor
IPC: B21B21/02
Filed: 1930-12-22
Abstract: 369,627. Rolling tubes. MANNESMANNRÍHREN-WERKE, 1B, Berger Ufer, Dusseldorf, Germany. Dec. 22, 1930, No. 38604. Convention date, Aug. 19. [Class 83 (iv).] Pilger rolls are formed with three distinct zones, e.g. a gap zone a<1>, a working zone c<1>, and a compensating zone b<1>, the tube being rotated through 45‹ after each pass to give more even spreading of the metal. Fig. 4 shows a similar arrangement with four pilger rolls. The zones merge into a gripping portion as at K, Fig. 5.
Patent GB-926288-A (GB)
Title: Improved multi-range electrical measuring instruments
Inventor: NAMENYI-KATZ LASZLO
IPC: G01R15/12
Filed: 1960-12-10
Abstract: 926,288. Measuring instruments. VECTRON ELECTRO-PHYSICS Ltd. Dec. 8, 1961 [Dec. 10, 1960], No. 38702/60. Class 37. In an automatic range selector for an electrical measuring instrument, the input voltage (or other parameter) to be measured, is amplified or attenuated incrementally in a series of stages corresponding with the various measuring ranges, to a proportionate value within the full scale deflection range of a meter. Selection of the requisite stages is effected by a series of voltage comparators which control a range indicator, and one or more delay networks are used to enable the range selection to be effected before a signal is fed to the meter. In Fig. 1 the input voltage at 1P is compared with a fixed voltage in the known comparator CN of a first stage N, and, if above this predetermined value, a relay RL operates to pass the input signal direct to the meter M and to light a lamp L to indicate the operative range of the meter. If the input signal is below the predetermined value, it is passed via a delay network DN, a normally closed contact RL1 of relay RL, and amplifier A to the next stage N-1 which functions similarly to stage N to pass its input signal direct to the meter or on to the next stage N-2 according to the result of the voltage comparison in this stage. The input signal is thus amplified in successive stages until it reaches a suitable value, the relevant range being indicated by the stage lamps L which are lit. Second embodiment, Fig. 2, circuitry above a line A-B, selects one of two sets of ranges, and the circuitry below the line selects the appropriate range from the selected set. The input signal I. P. is fed directly to a high impedance HIU unless it exceeds one volt (which will give full scale deflection of meter M) in which case the comparator IPC operates the relay RLO to attenuate by 60 dB the input to HIU via contacts 0-2. The signal is then fed over normally short-circuited resistors R3, R4, R5, amplified 60dB at A1 and fed to the meter M, over a delay network DNI, after the appropriate ones of sequentially operating comparators C1, C2, C3 have effected any necessary attenuation by inserting the corresponding ones of resistors R3, R4, R5 successively in circuit. The operative relays RL1, RL2, RL3 of these comparators and RL0 also serve to indicate the operative range. A known safety network SN protects the meter against an excess input voltage. In both embodiments electronic switches may be used in lieu of electromagnetic relays.
Patent GB-1217309-A (GB)
Title: Chemical plating process
IPC: C23C18/36
Filed: 1969-08-05
Abstract: 1,217,309. Electroless plating. STAUFFER CHEMICAL CO. Aug. 5, 1969 [Aug. 26, 1968], No. 39069/69. Heading C7F. An electroless nickel plating bath (pH 3À3 to 6À8) comprises a nickel salt, e.g. sulphate or chloride, an alkali metal hypophosphite, a buffer, and an alkali metal lignosulphonate. The Ni: hypophosphite ion ratio is 0À25 to 1À60. The buffer may be a salt of an aliphatic mono- or dicarboxylic acid, e.g. acetic, butyric, propionic, malonic, succinic or glutaric acids or nitrilotriacetic or ethylene diamine tetracetic acids. The bath temperature may be 120 to 210 F. The substrate may be metal, plastics wood, rubber or ceramics.
Patent GB-1149774-A (GB)
Title: Compositions containing indene-coumarone resin
Inventor: YARUSHEVICHJUS IONO KESTUTIS
IPC: C08F277/00
Filed: 1966-09-01
Abstract: 1,149,774. Cross-linked indene-coumarone resins. VILNJUSSKY GOSUDARSTVENNY NAUCHNO - ISSLEDOVATELSKY INSTITUT STROITELNYKH MATERIALOV. 30 Nov., 1967 [1 Sept., 1966], No. 39092/66. Heading C3P. An indene-coumarone resin is cross-linked by dissolving the resin in one or more esters of unsaturated aliphatic carboxylic acids and polyhydric alcohols in the presence of a polymerization initiator, e.g. isopropyl benzene hydroperoxide, and accelerator, e.g. cobalt naphthenate. The ester may be the monophthalate of, or, triethylene glycol dimethacrylate together with optionally styrene and methyl methacrylate.
Patent GB-842392-A (GB)
Title: Improvements in or relating to endless belt conveyors
Inventor: ORWIN OLAF JOHN BARCLAY
IPC: B65G21/06
Filed: 1956-12-24
Abstract: 842,392. Endless belt conveyer framework. FISHER & LUDLOW Ltd. Dec. 23, 1957 [Dec. 24, 1956], No. 39180/56. Class 78 (1). In an endless belt conveyer of the kind including spaced stands carrying idler rollers 12, 13 for the belt runs, and one or more series of longitudinal bars 31, 32 interconnecting the stands, each two bars 31, 32 meeting at a stand are connected to a leg 15 of the stand by a transverse pin 30 carried by a bracket 23 on the leg 15, the bracket 23 being so constructed and arranged relative to the pin 30 and the bars 31, 32 that one bar is secured against movement relative to the stand around the pin 30, while the other bar is free to pivot within limits around the pin 30 to allow for unevenness in the floor on which the stands rest. The bars may be connected to the legs 15 either as shown in Fig. 2, i.e. with one end of each secured against movement relative to one stand and the other end pivotable on the pin 30 of an adjacent stand or, as in Fig. 6 (not shown), alternate bars 31 may have both ends secured against movement relative to each of two adjacent stands while the intermediate bars 32 are pivotable on the pins 30 of the associated stands. For this purpose the bars 31, 32 are of angle section, Fig. 4, and each end of each of the bars 31, 32 meeting at a stand is provided with a pair of holes 33, 34 in its vertical web, either of which may be disposed on the pin 30. The bracket 23 is of L-shape having vertical and horizontal flanges 24, 28, respectively, joined by a connecting portion 29 shaped to allow the end of one bar 31 to be nested in the bracket with its flanges in contact with the bracket flanges. The pin 30 is mounted on the vertical flange 24 of the bracket 23 in a position to engage the lower hole 34 of this bar 31. The end of the other bar 32 is then positioned with its lower end 32d engaged in a channel 27 formed by an upturned portion 26 of the bracket flange 24, and is mounted on the pin 30 by its upper hole 33 so that it can pivot about the pin 30. The assembly is locked in position by a locking pin 35 passed through aligned holes in a cross member 16 of the stand and the bracket flange 28 so that its lower end 36 engages the edge 32c of the horizontal flange of bar 32. A chain is connected between the locking pin and the stand to prevent the former from being completely removed from the stand. The legs 15 have telescopic feet 19, 20 which are adjustable in height so that local unevenness in the ground between two stands or between one leg 15 and the other of a stand can be compensated. The idler rollers 12, 13 may be constructed as described in Specification 806,605 and mounted as described in Specification 827,002.
Patent GB-361680-A (GB)
Title: Improvements in acid proof sedimentation apparatus
IPC: B01D21/18
Filed: 1930-12-30
Abstract: 361,680. Gravity-separation apparatus. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(Dorr Co.; 247, Park Avenue, New York, U.S.A.) Dec. 30, 1930, No. 39203. [Class 46.] A rotary rake device for a settling-tank has the rake-supporting arms 33, Fig. 2, tie-rods 35, 36, and the spiders 41, 55 by which the arms 33 and the ties 35 respectively are connected to the vertical shaft 18 so constructed and connected that, if not of acid-resisting material, a coating of lead or the like can be readily applied, and that matter liable to cause corrosion will not collect thereon or the acid-proof coating be readily detached. The arms 33 are preferably tubular and of,oval cross section with the shorter axis vertical. Their inner ends are seated on longitudinal ribs in recesses 48, Fig 5, in the arms of the spider 41, the recesses being closed by covers 50 which are also formed with longitudinal ribs and are bolted in position. The ties 35, 36 are tubular and the connections of these with the arms are preferably made by welding and at a wide angle. The inner ends of the ties 35 are held in bores 58, Fig. 3, of the spider 55 by externally-screwed sleeves 62 which engage collars 60 screwed to the ends of the ties. One form of clamp for fixing the scraper blades 34 to the arms 33 is shown in Fig. 8. It comprises a part 65 fixed to the blade and embracing the lower side of the arm and provided with upwardly projecting lugs 67. A part 71 embracing the upper side of the arm has two corresponding pairs of lugs which come into position on either side of the lugs 67, so that the parts can be held together by means of tapered keys 74. A longitudinal extension on the part 65 serves to space the clamp from the clamp of the adjacent blade 34. An alternative form of clamp is shown in Fig. 9. The blade 34 has a flange 76 to which are bolted two brackets 77 spaced apart and on either side of the arm 33. Corresponding to each bracket is a bent rod 80 which embraces the arm and has its ends drawn through the bracket by means of nuts 81.
Patent GB-1377707-A (GB)
Title: Sectional pressure boilers
IPC: F24H1/32
Filed: 1972-08-24
Abstract: 1377707 Sectional boiler; fluent fuel fired boilers PARCA-NORRAHAMMAR AB 24 Aug 1972 [26 Aug 1971] 39452/72 Headings F4A and F4B In a sectional boiler having a flame chamber 9 and a convection heat exchange portion, arcuately-shaped flue gas passages 22 partially encircle the flame chamber 9 and the passages 22 are in communication with the flame chamber through ports 23 in the flame chamber wall which extend tangentially to the arcuate crosssectional wall of the gas passages 22. Each of the passages 22 discharge into a flue gas collecting passage 25 through an outlet port 24 at the end of each passage 22. The flue gas passages 22 are provided with inspection and de-sooting opening 26 covered during operation of the boiler. A de-sooting opening 30 for passage 25 is provided. Water is conducted through the boiler through inlet passages 19, ring passages 17 and outlet passages 18.
Patent GB-1271414-A (GB)
Title: Web cleaner
IPC: G03D15/00
Filed: 1969-08-06
Abstract: 1,271,414. Handling thin material. MINNESOTA MINING & MFG. CO. 6 Aug., 1969 [7 Aug., 1968], No. 39467/69. Heading B8R. [Also in Division G2] A device for cleaning a web, e.g. a microfilm recording, comprises blocks 5, 6 defining a chamber having an entrance slot 11 and an exit slot 12 through which the web passes, the chamber containing opposed brushes 7, 8 which are vibrated by the flow of air through passages 16, 17 to sweep the web. Dust and lint from the web are carried away from the brushes and are drawn into grooves 18 adjacent the entrance slot 11, the grooves being connected to a source of negative pressure.
Patent GB-834612-A (GB)
Title: Partially acetalated polyvinyl alcohol fibres
Inventor: KOBAYASHI HIDENARI SUYAMA EIJI
IPC: D01F6/14
Filed: 1957-12-20
Abstract: Partially acetalated polyvinyl alcohol fibres are made by heat-treating polyvinyl alcohol (containing not more than 0.5 mol. per cent of unsaponified acetyl groups) in solid form until it is insoluble in cold water but soluble in hot water, partially acetalating the heat-treated polyvinyl alcohol in a heterogeneous system with an aldehyde, or an acetal thereof, to such a degree that the product is still hot-water soluble, preparing a spinning solution from the partially acetalated polyvinyl alcohol, extruding fibres by wet or dry spinning the solution and subjecting the extruded fibres to stretching, heat treatment and further acetalation.  Preferably, the first acetalation step is effected with an aldehyde containing a basic group, e.g. amino-, dimethylamino-, ethylamino-, diethylamino-, dipropylamino-, benzylamino-, dibenzylamino-, dibutylamino-, pyrrolidino-, phthalimido-, or piperidino-acetaldehyde, dimethylamino-, diethylamino-, dipropylamino-, dibenzylamino- or piperidino-propionaldehyde, dimethylamino-, diethylamino-, dipropylamino-, dibutylamino-, dibenzylamino-, or piperidino-butyl aldehyde, dimethylamino hydroxy-butylaldehyde or dimethylaminobenzaldehyde or the acetals thereof.  The further acetalation is preferably effected with formaldehyde, but an aldehyde having a large lattice may be used, e.g. benzaldehyde. Addition of reducing agents, e.g. urea, formamide, formic acid, ammonium formate, formaldehyde or a derivative thereof, or dicyandiamide, to the spinning solution or to a treatment bath through which the partially acetalated polyvinyl alcohol fibres are passed prevents discoloration of the fibres during heat treatment.  Alternatively, discoloration of the fibres may be obviated by neutralization of the spinning solution with a base, e.g. sodium hydroxide, carbonate or bicarbonate, or by immersion of the fibres in an alkaline solution.  Discoloration of the fibres does not occur when the heat treatment is at a low temperature or is a wet heat treatment or is conducted in the absence of air, e.g. in an inert atmosphere.  In an example, polyvinyl alcohol obtained by almost completely hydrolysing polyvinyl acetate with sodium hydroxide in the presence of aqueous methanol is partially formalated in the presence of sulphuric acid and the product is dissolved in water.  A polyethylene glycol ether of stearyl alcohol is added to this solution, which is dry-spun into filaments which are stretched between rollers, heated at 210 DEG  C. for 1 minute and further formalated in the presence of aqueous sodium sulphate and sulphuric acid.  In another example, a mixture of partially dimethylaminoacetalated polyvinyl alcohol and polyvinyl alcohol itself is spun into filaments which are subsequently drawn, heat treated and formalated.
Patent GB-339148-A (GB)
Title: Method of regulating the temperature of flowing reaction mixtures
IPC: B01J19/24
Filed: 1929-12-31
Abstract: 339,148. Holzverkohlungs-Industrie A.kt.-Ges. Nov. 2, 1929, [Convention date]. Addition to 339,144. Acetone.-The process for obtaining acetone catalytically from acetylene and. water vapour described in the parent Specification is carried out under increased pressure.
Patent GB-1084466-A (GB)
Title: Improvements in or relating to gas fires
IPC: F24C13/00
Filed: 1964-10-01
Abstract: 1,084,466. Incandescent gas fires. A. TOMKINSON, and R. CREE. Nov. 9, 1965 [Oct. 1, 1964; Nov. 11, 1964], Nos. 39924/64 and 45863/64. Heading F4W. An incandescent gas fire has a boiler 15 arranged behind and adjacent to the radiants 14. A burner bar 21 is arranged to be tilted so that the burners heat the radiants 14 or the boiler 17, and a deflector 30 pivoted to a nose at the top of the boiler is movable between a position in which it obstructs the flow of hot gases between the radiants 14 and the boiler 15 and the position shown in which the boiler is heated. The front of the boiler is flanged and the back of the radiants have projections which reduce the contact between the radiants and the boiler so that radiants are not unduly cooled by the unheated boiler. The radiants 14 may be moved between a room heating position and a boiler heating position.
Patent GB-1004870-A (GB)
Title: Ultrasonic testing
IPC: G01N29/07
Filed: 1961-11-08
Abstract: 1,004,870. Ultrasonic testing. J. KRAUTKRAMER, and H. KRAUTKRAMER. Nov. 8, 1961 [Nov. 9, 1960], No. 40014/61. Heading H4D. Longitudinal faults 10 (Fig. 3), transverse faults 11 and faults such as pores in a weld seam 12 are separately distinguished by an arrangement employing two ultrasonic transmitting transducers 1, 2 and two receiving transducers 3, 4 the operation being that a longitudinal fault 10 causes transducers 3 and 4 to respond to reflected energy emitted by heads 1 and 2, respectively, whilst a transverse fault 11 causes the heads 4 and 3 respectively to respond to heads 1 and 2. When the fault is a pore the relatively omnidirectional nature of the reflection produces an indication of both longitudinal and transverse faults. The four transducers are mounted at the corners of a rectangle such that the seam 12 bisects two opposite sides and as the assembly is moved along the seam the echo signals as viewed on a luminescent monitor screen (which may also be a recording monitor) trace a path as shown in Fig. 4a in the case of longitudinal faults or, as shown in Fig. 4b, in the case of transverse faults. The invention is applicable to testing seams in plates and longitudinal and helical seams in tubes. In the latter case in order to test the seam at the end of the tube each transducer is switched for operation as a common transmitter/receiver and the transducers are rotated to beam energy perpendicular to the seam, the seam being then tested in a known manner as described with reference to Figs. 1 and 2 (not shown).
Patent GB-1481232-A (GB)
Title: Process for the manufacture of epoxide resin foams
IPC: B32B5/18
Filed: 1974-09-13
Abstract: 1481232 Substituted cyclohexanones CIBA-GEIGY AG 13 Sept 1974 [14 Sept 1973] 40080/74 Heading C2C [Also in Divisions C3 and B5] Cyclohexanone - 2,2,6,6 - tetrapropionic acid tetraglycidyl ester and 4-methyl-cyclohexanone- 2,2,6,6-tetrapropionic acid tetraglycidyl ester of formula where R is H or CH 3  respectively, are made by reacting cyclohexanone- or 4-methyl-cyclohexanone - 2,2,6,6 - tetrapropionic acid respectively with epichlorohydrin in the presence of aq. tetramethylammonium chloride followed by addition of aq. sodium hydroxide. 4 - Methylcyclohexanone - 2,2,6,6 - tetrapropionitrile of formula is made by reacting 4-methyl-cyclohexanone with acrylonitrile in the presence of aq. potassium hydroxide and t-butanol and 4-methylcyclohexanone - 2,2,6,6 - tetrapropionic acid of formula is made therefrom by treatment with aq. potassium hydroxide and then hydrochloric acid.
Patent GB-1361063-A (GB)
Title: Turbojet aero engines having means for engine component cooling and compressor control
IPC: F01D5/14
Filed: 1971-08-26
Abstract: 1361063 Axial-flow compressors, gas turbine engines MOTOREN - UND TURBINEN - UNION MUNCHEN GmbH 26 Aug 1971 [27 Aug 1970] 40200/71 Headings F1C and F1G In a multishaft turbojet aero-engine, means are provided for using high pressure air tapped from the downstream end of a H.P. compressor 2, Fig. 1, for imparting whirl to the main flow entering the H. P. compressor and thereby prevent stall therein during engine starting and run-up conditions. The tapped air passes through valve-controlled by-pass 20, hollow outlet vane 21, hollow shaft 6 and slots 12 in hollow stator vanes 8, into the inlet region of the compressor 2 in such a direction as to impart the desired whirl to the main flow. The tapped air also provides sealing and cooling functions in the L. P. turbine 5. During normal engine operation, when stall is not imminent, the by-pass valve 23 closes and low pressure air is then tapped through the slots 12 and passes in the direction of arrows N, K to the turbine 5 to continue the sealing and cooling functions therein. The slots 12 may be replaced by slots (26), Fig. 3 (not shown), provided adjacent the internal periphery of the compressor casing.
Patent GB-920613-A (GB)
Title: Pumping apparatus
IPC: B01L99/00
Filed: 1959-11-30
Abstract: 920,613. Mixing liquids in flow in proportions. TECHNICON INSTRUMENTS CORPORATION. Nov. 30, 1959 [Dec. 31, 1958], No. 40546/59. Class 86. [Also in Groups XXVI and XXVIII] Pumping apparatus for pumping liquids in proportional quantities, such as to a processing system 42 of the type described in Specification 774,711, comprises a rotary pump 10, Fig. 1, of the type described in Specification 817,070, in which rollers 24 compress flexible tubes 18, 20, 22 of different diameters whereby liquids are delivered in desired proportions. The liquid in tube 18 is delivered to a second pumping means 12 where it displaces an equal quantity of further liquid through a pipe 58 which mixes with the deliveries from pipes 20, 22 and flows into the processing system 42, the further liquid being one which would attack the tube 18 if pumped through it. Non-return valves 54, 60 are provided in the joins of the pipes. The pumping apparatus 12, Fig. 2, comprises a container 14 for the further liquid and a flexible non-stretchable bag 76 which receives the liquid pumped through tube 18. The connection is made by a hyperdermic needle 88 through a sealed closure 74 of the bag.
Patent GB-1515410-A (GB)
Title: Method and composition for sizing paper
IPC: C08L67/08
Filed: 1975-10-03
Abstract: 1515410 Paper sizing compositions containing starch and a polyester STANDARD OIL CO 3 Oct 1975 [4 Oct 1974] 40623/75 Heading C3U A composition suitable for sizing paper comprises a starch, modified starch or starch derivative and a polyester of a polyhydric alcohol and trimellitic acid or an ester-forming derivative, the polyester having an average MW of less than 4000 and an acid number of at least 35.