baber/WOPTO huggingface dataset:
Patent GB-1146358-A (GB)
Title: Rendering aqueous formaldehyde solutions less corrosive to metals
IPC: C23F11/08
Filed: 1966-08-19
Abstract: 1,146,358. Preventing corrosion; phosphate solutions. CELANESE CORP. Aug.19, 1966 [Aug.25, 1965], No.37181/66. Headings C7E and C7U. Corrosion of metal equipment, e.g. stainless steel or aluminium tubing in distillation towers and evaporators, in contact with aqueous formaldehyde solution is reduced by maintaining in the solution phosphate ions in a concentration of 10 to 1000 p.p.m. (calculated as H 3  PO 4 ). H 3  PO 4 , alkali metal phosphates e. g. Na 3 PO 4  or Na 2 HPO 4 , amine phosphates including quaternary methyl amine salts or other organic phosphates may be used to yield phosphate ions. Up to 5000 p. p. m. of halogen as halogen-containing contaminants, e.g. methylene or ethylene chloride or bromide or alkali metal halides, may be present in the solution. Formic acid may also be present with the formaldehyde.
Patent GB-511747-A (GB)
Title: Method of and means for the control of combined mechanical and hydraulic gearing
IPC: F16H47/06
Filed: 1938-12-21
Abstract: 511,747. Hydraulic transmission of power. VOITH, W., VOITH, H., and VOITH, H., (trading as VOITH, J. M., [Firm of]). Dec. 21, 1938, No. 37218. Convention date, Dec. 27, 1937. [Class 69 (ii)] [Also in Group XXIV] In an automatic variable-speed gearing in which a hydraulic torque converter W is combined with a mechanical gearing G, the reaction member L of the torque converter operates the selector mechanism of the gearing G, either hydraulically as shown, or by direct mechanical linkage or electrically. A spring-loaded disc S is rotated by the member L, until a port B admits pressure fluid from a tube Z to either of two tubes L', L<2> to change the gear to a lower or higher gear-ratio, a mechanical clutch being also operated. The loading of the springs acting on the disc S may be adjusted, while the engine M driving the converter W is running, either independently or conjointly with the engine throttle valve, or by a speed governor. A mechanical clutch may be disengaged by the first movement of the disc S and afterwards re-engaged. The return movement of the disc S being damped by a dash-pot and excessive overrun prevented by a stop.
Patent GB-1496468-A (GB)
Title: Method for control of subsurface coal gasification
IPC: E21B43/243
Filed: 1976-09-09
Abstract: 1496468 Underground coal gasification UNITED STATES ENERGY RESEARCH & DEVELOPMENT ADMINISTRATION 9 Sept 1976 [23 Oct 1975] 37321/76 Heading C5E A method for the in situ gasification of a subterranean coal bed 10 comprises the steps of penetrating the coal bed with a first plurality of bore holes 24 along a plane perpendicular to the plane of maximum permeability in the coal bed, penetrating the coal bed with a second plurality of bore holes 26 arranged parallel to the first bore holes 24, initiating combustion in the coal beds at a location underlying the first bore holes 24 and introducing combustion-supporting gas into these bore holes at a rate sufficient to support and maintain a combustion zone 28, withdrawing gaseous combustion products from the second bore holes 26 and controlling the flow rate of combustion products through the second bore holes to vary the pressure drop between the combustion zone and second bore holes to provide uniform propagation of the combustion zone towards the second bore holes.
Patent GB-631812-A (GB)
Title: Improvements relating to rotary-shuttle box loose reed looms
IPC: D03D49/68
Filed: 1946-12-19
Abstract: 631,812. Preventing automatic shuttle changing In looms. POLLARD (1923), Ltd., W., and WILLIAMS, H. Dec. 19, 1946, No. 37376. [Classes 142 (i) and 142 (iii)] In a loom having a weft feeler which enters a shuttle box through a slot G' and, if the weft is depleted, initiates turning of a rotary shuttle box to bring a fresh shuttle into action, operation of a loose reed motion by a shuttle trapped in the shed lifts a dagger F, thus releasing a spring- loaded lever B so that a mask A comes in front of the slot G<SP>1</SP> ; on the beat up stroke of the slay, the dagger F disengages the starting handle to stop the loom, and the weft feeler encounters the mask A to prevent absence of the shuttle from causing shuttle changing. Specification 622,264 is referred to.
Patent GB-766852-A (GB)
Title: Binary trigger and counter circuits employing magnetic memory devices
IPC: H03K23/76
Filed: 1954-12-24
Abstract: 766,852. Electronic counting-apparatus. INTERNATIONAL BUSINESS MACHINES CORPORATION. Dec. 24, 1954 [Dec. 31, 1953], No. 37379/54. Class 106 (1). [Also in Groups XXXIX and XL (c)] In a circuit triggered and reset by pulses of one polarity, the pulses are applied to transistors 10, 11 in parallel, Fig. 1, each feeding a saturable core memory device 1 so that each is effective in turn to magnetize the core in one sense or the other. Four of these circuits may be interconnected to form a decimal counter. A positive pulse applied to the transistors 10, 11 causes one, for example 10, to conduct - and pass collector current through a driving winding 3, feedback being effective over winding 5 to cause the core 2 to pass into the saturated region. The next input pulse is ineffective on transistor 10 since any conduction would tend to drive the core further into the saturated region. The pulse is, however, operative to cause transistor 11 to conduct since the windings 4, 6 are such as to magnetize the core in the opposite sense, the process continuing until saturation is reached in that direction. Alternative output pulses are suppressed by diode 24 so that pulses of one polarity appear at terminals 22, 23. In a modification, Fig. 2 (not shown), the emitters are earthed and the input applied in the common lead of windings 5, 6. Point contact transistors 33, 34 may be used, Fig. 3, with a limiting resistor 37 capable of passing only sufficient current to maintain one in a conducting state, a diode 43 tying the emitters to earth. A negative input pulse applied over transformer 41 causes conduction to pass from one transistor to the other thereby changing the state of saturation of the core 26. Decimal counter. Three circuits 52, 53, 54 may be arranged in cascade, Fig. 4, to give a count of eight, the output pulse being fed to the base circuit of transistor 34 in stage 55, Fig. 5 (not shown) to reverse the state of core 26. The ninth pulse is only effective to restore stage 52 but the tenth pulse in triggering stage 52 is also fed out over the auxiliary winding 56 to the base circuit of transistor 33 to restore stage 55, an output pulse being fed out over diode 59. An auxiliary winding 60 is arranged to feed back a paralysing pulse over diode 62 to prevent the change-over of stage 53.
Patent GB-1267366-A (GB)
Title: Improvements in or relating to tape playback machines
Inventor: MAYO DANIEL CHARLES
IPC: G09B5/04
Filed: 1968-08-07
Abstract: 1,267,366. Tape cassette apparatus. PLESSEY CO. Ltd. 11 June, 1969 [7 Aug., 1968]. No. 37595/68. Heading G5R. A clamp mechanism 4 for holding a magnetic tape cassette 1 in a receptacle 3 is coupled with the head 9 to move it into the operative position when the cassette is clamped 4a. The cassette is of the audio-visual type as in Specification 1,131,222 and operation of the clamps may bring a projection lens 10 into co-operation with the cassette as well as releasing spool brakes. Alternatively the lens 10 may be fixed in the cassette or machine.
Patent GB-972646-A (GB)
Title: Improvements in or relating to axial flow jet propulsion engines
Inventor: BENSON-BALL WILLIAM
IPC: F02K5/00
Filed: 1961-10-20
Abstract: 972,646. Jet propulsion plant. W. BENSONBALL. Jan. 16, 1963 [Oct. 20, 1961], No. 37646/61. Heading F1J. A jet propulsion engine comprises a prime mover driving a fan which is mounted in a circular duct with the leading edge of the first stage blades of the fan in alignment with the plane containing the change from a converging inlet opening to the circular duct, between three and ten planar airflow straighteners extending from immediately adjacent the fan towards the end of the duct parallel to the axis of the duct. A model glow-plug engine 8 drives a fan 6 at the throat of a converging inlet 5 attached to a circular duct 1. Airflow straighteners 14 having bend ends 4 are mounted within the duct 1 around a tubular member 2 having hemispherical and conical ends 21, 3. In a modification, Fig. 2, a second air inlet 16 augments the thrust from the duct 1. Two or more fan stages may be provided and fuel may be injected into duct 1 and ignited by a glowplug. The relative dimensions of the components and the fan blade and straightener inlet angles are given. The duct 1 and member 2 may be conical converging towards the duct exit.
Patent GB-1000392-A (GB)
Title: Improvements in or relating to hosiery
IPC: D04B9/54
Filed: 1962-10-05
Abstract: 1,000,392. Knitting. SDRUZENI PODNIKU TEXTILNIHO STROJIRENSTVI. Oct. 5, 1962 [Oct. 9, 1961], No. 37696/62. Heading D1K. A turned welt knitted on a circular knitting machine comprises an initial course a in which uniformly spaced selected needles receive yarn, a second course b in which all needles receive yarn a third course c in which some needles of those selected initially hold their loops and receive a tuck loop, a succession of courses in which all the needles except those selected in the third course knit and finally a course z in which all the needles knit to complete the turned welt. Just before the welt is completed further tuck loops may be received on the selected needles. A reinforcing thread 4 may be inserted in the first four courses and in the last course before completing the welt. As shown the welt is out-turned.
Patent GB-991180-A (GB)
Title: Methods of and apparatus for friction welding
IPC: B23K20/12
Filed: 1962-01-09
Abstract: 991,180. Welding by pressure. AMERICAN MACHINE & FOUNDRY CO. Jan. 9, 1962 [Jan. 10, 1961], No. 37801/64. Divided out of 991,179. Drawings to Specification. Heading B3R. The subject-matter of this Specification is the same as that in Specification 991,179 but the claims are directed to a method and apparatus for friction welding metal workpieces wherein the relative rubbing movement therebetween is stopped after a predetermined period of time.
Patent GB-927184-A (GB)
Title: Improvements in pole piece construction
IPC: H01H9/44
Filed: 1961-10-23
Abstract: 927,184. Arc-rupturing in switches. GENERAL ELECTRIC CO. Oct. 23, 1961 [Nov. 7, 1960], No. 37839/61. Class 38 (5). [Also in Group XXXV] A polepiece WS of a magnetic blow-out coil is formed from a spiral of magnetic ribbon wound on a support SS, the ribbon being of arcuate cross-section so that successive turns of the spiral are nested together to prevent lateral slipping. Flat ribbon stock may be arcuately deformed by forming rollers or a forming tool. The ribbon may be enamelled or coated with iron oxide to prevent eddy currents.
Patent GB-875565-A (GB)
Title: Process for producing an aldehyde by the addition of carbon monoxide and hydrogen toolefinic compounds
IPC: C07C45/50
Filed: 1957-12-05
Abstract: Aldehydes are produced by passing a mixture of carbon monoxide and hydrogen upwardly through an aqueous solution of a cobalt salt to produce a cobalt hydrocarbonyl and thereafter passing the gas containing hydrocarbonyl, carbon monoxide and hydrogen under the conditions of the Oxo synthesis reaction through a liquid organic phase containing an olefinic compound and floating as a layer on the aqueous solution.  The latter preferably has an acid reaction and contains iron, as described in Specifications 711,696 and 741,598. Thus the solution may contain cobalt and iron sulphates with or without magnesium sulphate.  The olefin may be introduced below or directly into the aqueous layer or into the organic layer, optionally together with inert hydrocarbons. Relative volumes of the two phases may be between 1:4 and 4:1. Product may be withdrawn from the top of the organic phase and the aqueous layer renewed or regenerated as by removal of iron. Temperature may be, e.g. 165-170 DEG C. throughout or 110-150 in the aqueous phase and 160-180 in the organic.  Several stages may be used.  In Examples: (1) a vertical pressure vessel contains a lower aqueous cobalt solution and above it a layer of crude aldehyde product, C8-C9 olefins and water gas being introduced at the base and aldehyde withdrawn at the top; (2) di-isobutylene is introduced about midway along the reactor and water gas at the base; (3) the reactor has separate internal heating coils for the two phases the organic phase being the dialdehyde produced from dicyclopentadiene and the aqueous phase cobalt sulphate containing iron powder in suspension.  Water gas and a mixture of dicyclopentadiene and toluene are introduced at the base.
Patent GB-1162450-A (GB)
Title: Aluminum Plating Process.
Inventor: GROVES KENNETH ORA
IPC: B01J37/00
Filed: 1968-08-08
Abstract: 1,162,450. Coating with aluminium. DOW CHEMICAL CO. Aug. 8, 1968 [Sept. 14, 1967] , No.37883/68. Addition to 1, 122, 359. Heading C7F. In a method of depositing aluminium by catalytically decomposing a hydride as described in Specification 1,122,359, the aluminium is deposited on whiskers of e.g. boron, glass, titanium phosphate, TiO 2 , SiC, Al 2 O 3 , AlN, carbon, and metal nitrides and fluorides. In an example SiC whiskers are slurried in a solution of TiCl 4  in hexane, filtered, and dried, and then, while hot, added to a diethyl ether solution of aluminium hydride, and finally heated to 220‹ C.
Patent GB-1315913-A (GB)
Title: Magnetic recording apparatus
IPC: G11B15/61
Filed: 1971-08-12
Abstract: 1315913 Magnetic recording CONTROL DATA CORP 12 Aug 1971 [29 Oct 1970] 37958/71 Heading G5R A stationary magnetic recording sheet (12), Figs. 2 to 4 (not shown), is wrapped about and spaced from a rotating cylindrical surface 10 containing at least one magnetic recording head 22, and suction is applied to the recording sheet so that its spacing from the cylindrical surface is locally reduced at the recording head. As shown, suction is applied through a slot 21 across the width of the recording sheet, and through orifices 20 to produce a local depression in the recording sheet at each head 22. Pressure is applied through a slot 40 to return the recording sheet to its normal flying height behind the heads 22.
Patent GB-935137-A (GB)
Title: Water-insoluble disazo-dyestuffs and process for their manufacture
IPC: C09B31/02
Filed: 1961-10-23
Abstract: The invention comprises disazo dyes free from sulphonic acid and sulphonamide groups of formula <FORM:0935137/IV(a)/1> wherein A, B and D are benzene residues.  They are prepared by diazotizing an aminoazo dye of formula <FORM:0935137/IV(a)/2> and coupling with a hydroxybenzene.  The intermediate aminoazo dyes are prepared by coupling a diazotized aminobenzene with a 1-aminophenyl-5-pyrazolone. The dyes give yellow shades on textile materials of cellulose ethers and esters, polyamides, polyurethanes, polyvinyl chloride and polyesters.  In an example the monoazo dye 2-nitroaniline --> 1-(41-aminophenyl)-3-methyl-5-pyrazolone is further diazotized and coupled with phenol.  Further examples are given.
Patent GB-1269279-A (GB)
Title: Azetidinones and their preparation
Inventor: CLAYTON JOHN PETER
IPC: C07D205/095
Filed: 1969-07-29
Abstract: 1,269,279. Azetidinones. BEECHAM GROUP Ltd. 20 July, 1970 [29 July, 1969], No. 37977/69. Heading C2C. Novel compounds I (including acid addition salts thereof and stereoisomers) where R is optionally substituted alkyl, aralkyl O alkenyl, R<SP>1</SP> is H, or optionally substituted alkyl, aralkyl or aryl or a salt forming ion, R<SP>2</SP> is H or optionally substituted aralkyl or acyl and R<SP>3</SP> is H or optionally substituted aralkyl, are made by reacting penicillanic acid derivatives (II), in anhydrous liquid medium, with a strong base which does not cleave the #-lactam ring, and with an alkylating, aralkylating or alkenylating agent to introduce R; II are such that the products I are those where R<SP>2</SP> is aralkyl (removal of aralkyl, e.g. trityl is conveniently removed utilizing p-toluene-sulphonic acid, affords I where R<SP>2</SP> is H; subsequent acylation affords I, where R<SP>2</SP> is acyl) and R<SP>1</SP> is alkyl, aralkyl or aryl (catalytic hydrogenation or hydrolysis accordingly affords the free acids I). The starting materials (II), e.g. benzyl and pmethoxybenzyl 6 - # - (triphenylmethylamino) penicillanates, are prepared, e.g. by the tritylation of the appropriate 6-aminopenicillanic acid esters.
Patent GB-326275-A (GB)
Title: Improvements in and relating to interlocking sheet piling
IPC: E02D5/08
Filed: 1928-12-24
Abstract: 326,275. Annison, R. H., and Bull, J. Dec. 24, 1928. Piles. - In interlocking trough-shaped sheet piles, the interlocking edges are formed by rolling a V-shaped extension on each edge; the inner arm 6, which is connected to the web 5, is longer than the outer arm 8, which tapers slightly and is rolled inwards to form hook-section parts. The junction 11 between the parts. 6, 8 is thickened, and when rammed, its surface is flat, and is level with the outer surface of the trough of the adjacent pile.
Patent GB-622693-A (GB)
Title: Improvements in or relating to snap-action electric switches
IPC: H01H36/00
Filed: 1946-12-31
Abstract: 622,693. Partly-magnetic switches. SLADE. H. G. Dec. 31, 1946, No. 38107. [Class 38(v)] A switch is given a quick-action by the cooperation of one or more armatures mounted on a manuallyoperated slider with one or more magnets, one at least of the armatures serving also to bridge two fixed contacts. In the form shown in Figs. 1 and 4, a slider 21, which is operated by a knob 28 carries two armatures 22, 23 as well as a magnet 30 which slides between and magnetizes two pole pieces 12, 13. Insulated by strips of mica 17, 18 from the pole pieces are two contacts 15, 16 of magnetic material. The armatures 22, 23 co-operate respectively with the contacts 15, 16 and the lower ends of the pole pieces 12, 13. In modifications. contacts are provided at both ends and the slider is operated by a pair of push rods projecting through the cover. The magnet is also fixed to the base. In another modification, Figs. 9, 10, (not shown), the slider carries a single armature which cooperates with two fixed horse-shoe magnets.
Patent GB-970193-A (GB)
Title: Stencil assembly
IPC: B41M1/12
Filed: 1961-10-25
Abstract: 970,193. Stencils; hand stamps. STEN-CLABL Inc. Oct. 25, 1961 [Nov. 14, 1960], No. 38261/61. Headings B6C and B6D. A stencilling device comprises an ink applicator pad 12 to which is adhered a stencil assembly comprising a stencil sheet 13 and a backing sheet 14 of porous paper, which backing sheet is disposed between the pad and the stencil sheet and provides for the transfer of ink to the stencil sheet. The stencil sheet may be of Yoshino tissue whilst the sheet 14 may be a kozatint paper carbon paper-prepared from Yoshino tissue-which has already been used as a carbon paper for copying purposes during the cutting of the stencil sheet. If required additional rigidity may be imparted to the stencil assembly by placing two sheets such as 14 between the pad and the stencil sheet. Adhesion between the pad and the sheets of the assembly derives from the nature of the ink and the sheets. Specification 800,166 is referred to.
Patent GB-1299096-A (GB)
Title: Marine seismic prospecting
Inventor: JOHNSON CURTIS HERMAN
IPC: G01V1/38
Filed: 1970-08-07
Abstract: 1299096 Seismic prospecting WESTERN GEOPHYSICAL CO OF AMERICA 7 Aug 1970 [11 Sept 1969] 38292/70 Heading H4D In a marine seismic prospecting system wherein an initial seismic pulse is generated by an underwater explosion, the effects which secondary pulses produced by oscillations of the generated gas bubble have on the resulting seismic reflection signals are suppressed by processing these signals with an operator derived from signals representing the unreflected wave train of the initial and secondary pulses. In the Fig. 1 system percussion-initiable cartridges 12 each including a delay fuze are fed by water pressure down tube 16 so that they impact member 20 and are swept away before they explode. Transducer 40 detects the unreflected pulse wave train, which is recorded in addition to the reflection signal output of a conventional detector streamer cable 24. Alternatively the first-arrival signals from detector groups in streamer 24 may be used instead of transducer 40 to derive the unreflected wave train, by correcting their recorded traces for movement and summing the corrected traces (to cancel random noise). Signals, representing the reflection signals which would have been detected by streamer 24 if the secondary pulses had been absent or coincident with the initial pulse are derived by (a) cross-correlating the reflection signals with the unreflected pulse wave train or with an operator consisting of single respective amplitude values representing the initial and secondary pulse amplitudes and spaced in time according to the intervals between the initial and secondary pulses, or (b) convolving the reflection signals with a Wiener operator derived by forming the inverse Fourier transform of the quotient of the complex spectra of the unreflected pulse wave train and a desired waveform, the desired waveform being an impulse, a Ricker wavelet or a minimum phase wavelet. The resulting processed signals, denoted P, may be enhanced by the steps of subtracting them from the original reflection signals to obtain a trace, A, containing only reflection signals from the secondary pulses; regarding the first secondary pulse as a theoretical initial pulse and processing trace A as in (a) or (b) to obtain a trace, B, containing only reflected signals from the first secondary pulse; time-shifting trace B by the initial-first secondary pulse interval to align reflection signals from the first secondary pulse with those from the initial pulse in the processed signals P; adding the time-shifted trace to the signals P to enhance the reflected signals from the initial pulse; and repeating the above steps for each subsequent secondary pulse.
Patent GB-1477557-A (GB)
Title: Process compositions and uses of silicate products
IPC: B01F25/60
Filed: 1975-09-18
Abstract: 1477557 Alkali metalmetal-silicates ANGLIAN WATER AUTHORITY 18 Sept 1975 38339/75 Addition to 1399598 Heading C1A Aqueous compositions containing complex alkali metalmetal silicate material, particularly sodium aluminium silicate, are prepared by continuously bringing together and substantially immediately mixing in a vessel under high shear with a rotor having a blade or blades that rotate at a speed of at least 1000 rpm, concentrated aqueous solution of alkali metal silicate and of a salt of a metal other than an alkali or an alkaline earth metal, and by continuously forcing the product out of the vessel, the proportions of alkali metal silicate metal salt and water being such that in the aqueous composition, the weight of silicate measured as SiO 2  is at least 10% and the pH of the composition is from 2 to 7À5. A suitable vessel is shown in Fig. 1 comprising a cylindrical mixing chamber 1, and pipes 14 and 15 through which the alkali metal silicate and metal salt may be separately introduced; the chamber contains a multiblade rotor 10, having blades set at 10 to 20 degrees to the horizontal; the rotor is driven by motor 7. The fixed multiblade stator 12 has blades set at 10 to 20 degrees to the vertical. An outlet duct 13 is clamped to the top of the chamber at 4 through which the product is continuously forced by the rotor action.