baber/WOPTO huggingface dataset:
Patent GB-1439034-A (GB)
Title: Fluid flow control valves
IPC: F24F11/76
Filed: 1973-08-10
Abstract: 1439034 Valves GENERAL ELECTRIC CO 10 Aug 1973 [5 Sept 1972] 37972/73 Heading F2V [Also in Division G3] A fluid flow control valve comprises a housing 12 having an inlet 14, outlet 16 and a piston 28 slidably mounted within cylinder 18 to vary the flow area of orifice 24 under the control of a temperature responsive servo 48 which determines the pressure P x  in chamber 40 on one side of piston wall 32, there being feedback means 96 connected between piston 28 and servo 48. The latter comprises a hollow rod 52<SP>1</SP> of low thermal expansion characteristics supported between radial struts 20, 62<SP>1</SP> and slidably containing a hollow high expansion rod 51 with an internal passage 54 opening at one end in a nozzle 56. The other end of passage 54 can be supplied with upstream fluid pressure P 1  via passages 110, 112 when a solenoid valve 108 is opened, the pressure being communicated via nozzle 56 to chamber 40 to urge piston 28 leftwards against spring 114 in the opening direction of orifice 24. The pressure in chamber 40 leaks to atmosphere via restriction 154 in piston 28 and passage 43. Since high expansion rod 51 is clamped at its left end by means 72, 74 any change in upstream fluid temperature causes axial movement of nozzle 56 relative to obturating surface 106, thus altering the pressure in chamber 40 to cause adjustment of piston 28 and orifice 24. The surface 106 forms part of feedback means 96 comprising a lever 98 pivoted to rod 52<SP>1</SP> at 100 and bearing at its other end 102 against piston 28. Surface 106 is profiled such that movement of piston 28 causes variation in the gap (h, Fig. 2, not shown) between nozzle 56 and the surface with consequential variation in the pressure of chamber 40. The rightwards end of the latter is defined by a fixed plate 36<SP>1</SP> which also defines a chamber 122 with a second movable piston 120. Chamber 122 is subjected via passage 128 to downstream pressure such that a sudden rise in the latter during transient conditions causes piston 120 to move rightwards against spring 124 to reduce orifice 24 until the slower acting piston 28 can readjust to the new conditions. An additional pressure relief valve 134 may be provided which opens in the event of excess downstream pressure to vent chamber 40 to atmosphere via passages 130, 132, 152 and 140 thus causing piston 28 to close orifice 24. The position of piston 28 is sensitive to both upstream temperature and pressure, however in modifications (e.g. Fig. 4, not shown) the diameter of seal 44 and the face areas of piston 28 are altered so as to render the latter insensitive to changes in upstream pressure, or to cause piston 28 to move in the closing direction of orifice 24 with increases in that pressure. In a further modification (Fig. 1, not shown) piston 120 is not provided.
Patent GB-1079985-A (GB)
Title: Tool carrier for a mixer for the preparation of dough
IPC: B01F7/00
Filed: 1965-09-06
Abstract: 1,079,985. Mixing apparatus. A. STEPHAN U. SOHNE. Sept. 6, 1965 [Sept. 8, 1964], No. 38003/65. Heading B1C. A dough mixer has a vertical rotatable column 5 carrying mixing tools 4 which may be curved and pivoted. and axial vanes as at 8 extending the whole or the major part of the length of the column above the mixing tools; the head 7 of the column may be formed to act as an abutment for a retaining nut and/ or as a slinger plate.
Patent GB-1190757-A (GB)
Title: Improvements in or relating to Flow Meters
Inventor: HODGES GORDON FRANCIS
IPC: G01F1/10
Filed: 1966-08-25
Abstract: 1,190,757. Bearings. PLESSEY CO. Ltd. 16 Aug., 1967 [25 Aug., 1966], No. 38173/66. Heading F2A. [Also in Division G1] In a fluid flow responsive device a rotor 5, arranged to be rotated by fluid flow, is mounted by means of a steel spindle 6 running in a nylon bush 10 seated on nylon bearings 8 and held together by a rubber or synthetic rubber, such as neoprene, sleeve or collet 11 which allows radial movement of the bearing 10 with respect to the axis of rotation of the rotor 5. A split nylon bush 12 engages a recess 13 in side wall 21 to hold the sleeve or collet 11 in position and has an enlarged hole 12 to limit radial movement of the spindle 6.
Patent GB-1156815-A (GB)
Title: Light-Sensitive Reproduction Material and method of processing it
IPC: C09B11/26
Filed: 1966-08-26
Abstract: 1,156,815. Bis indolyl methanes. KALLE A.G. 26 Aug., 1966 [1 Sept., 1965], No. 38342/66. Heading C2C. [Also in Division G2] Bis indolylmethanes of formula wherein R is aryl, substituted aryl or aralkenyl, and R 1  to R 4  is hydrogen, alkyl or aryl are prepared by reacting one or more indoles with the appropriate aromatic aldehyde. Specified compounds are those wherein R is phenyl, p-(nitro-, dimethylamino- or chloro-) phenyl, 3,4-(dichloro- or dimethoxy-) phenyl, styryl or pformyl phenyl.
Patent GB-1014757-A (GB)
Title: Improvements in and relating to the control of parallel connected semi-conductor devices
Inventor: DEHNERT HORST
IPC: H02M1/088
Filed: 1962-10-10
Abstract: 1,014,757. Converting. LICENTIA PATENT VERWALTUNGS G.m.b.H. Oct. 10, 1962, No. 38387/62. Heading H2F. [Also in Division H3] Two parallel connected thyristors 1, 2 have a resistor 11, connected between a common point B of their cathode circuits and a common point A of their anode circuits, across which a firing voltage for the thyristors is developed and applied through diodes 7a, 7b to the control electrodes. Fuses 10a, 10b are included in the anode circuits.
Patent GB-1529212-A (GB)
Title: Exposure control device in a camera using an electro-optic light control element
IPC: G03B7/08
Filed: 1975-09-18
Abstract: 1529212 Camera exposure control; controlling light NIPPON KOGAKU KK 18 Sept 1975 [18 Sept 1974] 38398/75 Headings G2A and G2F A camera shutter arrangement comprises a mechanical shutter (7 or 12) Figs. 1 and 2 (not shown) and an electro-optic shutter 60 the former being used to ensure that light is completely blocked at the completion of exposure. The electrooptic shutter 60 may be combined with an electrooptic diaphragm or, as shown, may itself constitute a shutter-diaphragm, various constructions being shown in Figs. 5 to 10 (not shown). It may for instance be a liquid crystal or an electro-chromic device. In Fig. 1 (not shown) the mechanical shutter is constituted by the reflex mirror (7) of an SLR camera and in Fig. 2 (not shown) by plates (12). The arrangement of Fig. 11 is operable in three modes: (1) Shutter time pre-selected by a dial 69; diaphragm automatically determined by setting a switch 71 to EE. Upon operation of a shutter release the mechanical shutter opens and in doing so closes a switch 66 to start a timer 68 set by dial 69, and sets a flip-flop 67 which sends signals through switch 71 to first inputs of AND gates I to V. A calculator 78 receives inputs corresponding to object brightness, film speed and pre-set shutter time and calculates a diaphragm signal Av which is fed through a gate 100 to an A/D converter 86. The converter sends signals to second inputs of selected ones of the AND gates I to V to energize corresponding electrodes 61 to 65 of the electro-optic shutter-diaphragm 60 thereby causing a corresponding area of the shutter-diaphragm to become transparent. When timer 68 times out it (a) resets flip-flop 67 to turn off the AND gates I to V to "close" the electro-optic shutter 60 (b) initiates closure of the mechanical shutter. (2) Diaphragm pre-selected by switch 71; shutter time automatically determined by setting dial 69 to A. On shutter release the mechanical shutter opens as in (1), flip-flop 67 passes signals to the first inputs of those AND gates I-V selected by switch 71, calculator 78 and A/D converter 86 send signals to the second inputs of all the AND gates I-V, and the gates receiving two signals energize corresponding electrodes 61 to 65 of shutterdiaphragm 60. Calculator 78 calculates shutter time according to pre-set aperture, object brightness and film speed and sends the result to timer 68 to control shutter closure. (3) Diaphragm and shutter time both preselected by switch 71 and dial 69 respectively. Shutter time is controlled as in (1) and aperture as in (2).
Patent GB-1165627-A (GB)
Title: Electric Arc Steelmaking.
Inventor: LONGLEY HARRY FITZPATRICK
IPC: C21C5/52
Filed: 1967-08-22
Abstract: 1,165,627. Charging electric arc melting furnaces. METALLGESELLSCHAFT A.G., STEEL CO. OF CANADA Ltd., and PICKANDS MATHER & CO. 22 Aug., 1967 [27 Aug., 1966], No. 38591/67. Heading F4B. In operating an electric arc melting furnace particulate sponge iron is charged peripherally of the furnace to a height lower than the ultimate slag level, followed by scrap, centrally into the bowl so formed, whereupon said scrap is melted. Further scrap is then charged into the centre and sprinkled with more sponge iron which enters the scrap interstices. By this system up to 90% sponge iron can be used in the charge without the formation of accretions on the furnace wall.
Patent GB-1395230-A (GB)
Title: Method and apparatus for recording audio frequency signals  on a magnetic tape
IPC: G11B5/00
Filed: 1972-08-21
Abstract: 1395230 Magnetic tape recording; head circuits K SCHIRMER 21 Aug 1972 [24 Aug 1971] 38862/72 Heading G5R  A method of recording audio-frequency signals on magnetic tape comprises: (i) applying the audio signal and a high-frequency bias signal to a recording head having a gap of between 15 and 50 microns with no metallic inserts therein; and (ii) moving the tape past the head at a spacing therefrom of about onequarter the gap width. The latter step provides a field at the tape which is substantially uniform across the gap and falls off rapidly at the gap edges, Fig. 1(b) (not shown). The spacing may be achieved by a layer of dielectric material, e.g. TiO 2  on the pole face. In the preferred head circuit, Fig. 6, emphasis is applied to audio signal NF by a network V 1  including two parallel, opposed, high-resistivity, point-contact germanium diodes D G . The diodes Do are maintained at a temperature of about 45‹ C. by heaters H and thermistors R p  and then have a characteristic, Fig. 4 (not shown), which is the inverse of the distortion curve, Fig. 5 (not shown). A second such emphasis network V 2  is provided in parallel to compensate for short-term magnetic losses after recording. The audio signal is fed to an amplifier T 1 , T 2  and a current amplifier T 3 -T 6 . A bias signal HF is superimposed at T 3  and is preferably a square wave of frequency 30-50 kHz. This may, as shown, be derived from a sinusoidal erase signal by means of a voltage limiter T 7 , T 8 . If the bias signal is sinusoidal, however, the frequency will depend on the tape velocity and may be 30 kHz for 9À5 cm./sec, or 160 kHz for 38 cm./sec. to achieve complete modulation. The amplitude of the bias signal is selected to give just below maximum sensitivity with a specified DIN standard tape, Fig. 3, (not shown), and for a square wave bias signal this amplitude must be 2À5 to 3À0 dB lighter than for a sinusoidal bias signal.
Patent GB-334810-A (GB)
Title: Cover-arrangements more particularly intended for tank wagons
IPC: B62D25/06
Filed: 1929-12-19
Abstract: 334,810. Krupp Akt.-Ges., F. Jan. 25, 1929, [Convention date]. Doors, cart.-In wagons &c. in which the covers comprise a series of flaps over each longitudinal half of the body the flaps engage at their lateral edges like tiles so that from one end of the wagon the flaps may be opened in unison while from the other end they are opened separately and successively. The flaps D, E are hinged at d<1>, e<1> and when shut are locked by means of a lever F having an integral cam f<1> coacting with bracket G. The lateral edges of the flaps are swaged to fit over one another like tiles as shown at d<3>, d<4> and e<3>, e<4>. The flaps engage slotted links H to limit the degree of opening.
Patent GB-936704-A (GB)
Title: Process for the direct reduction of oxidic ore
IPC: F02B3/06
Filed: 1961-11-01
Abstract: <PICT:0936704/III/1> Oxidic ore is reduced by passing a hydrocarbon fuel and steam over the ore to produce a reducing atmosphere by hydrolysis without combustion.  Fig. 1 shows an apparatus for carrying out this process and consisting of an inner shell 13 fixed within an outer shell 12 rotatably mounted on rollers 61.  Pelleted oxidic ore is fed, via a dryer 86 and shoot 89, to the end 16a of the inner tube which is preheated to 1400 DEG F.  Hydrocarbon fuel (e.g. methane, butane, ethane, butylene, ethylene acetylene, diesel fuel, kerosene &c.) and steam are fed in through pipes 31, 34 respectively to form the reducing atmosphere within the tube 16 with the hot oxidic ore acting as catalyst.  The fuel-steam mixture preferably contains 1-6 molar equivalents of steam.  The product metal is removed by a conveyer 55 via a cooler 54, and reducing gases pass back into the space 15 between the inner and outer tubes where they are burnt with air admitted through adjustable manifolds 71 to heat the inner tube.  Hot combustion products pass out at 95 and are used to preheat the fuel, steam and ore pellets.  The process is particularly suitable for Fe, W, Ni, Zn and certain Cu ores. Specification 933,120 is referred to.
Patent GB-1078463-A (GB)
Title: Resinous coating compositions
IPC: C09D163/00
Filed: 1964-09-28
Abstract: A composition comprises (1) a copolymer of an unsaturated carboxylic acid amide and at least one other copolymerizable ethylenically unsaturated monomer, the amide groups in the polymer having a hydrogen atom replaced by -CHROR1 where R is hydrogen or alkyl and R1 is hydrogen or an organic radical, and (2) from 3 to 50% by weight of a polyester containing unreacted epoxy groups in the polyester molecules, said polyester being the reaction product of a polyepoxide having an epoxy equivalence greater than 1 with a preformed seterification product of a polyhydric alcohol and a polycarboxylic acid, said esterification product having unreacted carboxyl groups, at least 1 mole of the polyepoxide being used per unreacted carboxyl equivalent in the preformed seterification product.  Interpolymers were prepared from a mixture of acrylamide styrene methacrylic acid and ethyl acrylate; acrylamide methacrylic acid and styrene; acrylamide methacrylic acid styrene and methyl methacrylate optionally with hydroxyethyl methacrylate and 2-ethylhexyl acrylate by conventional solution polymerization techniques, and were then reacted with formaldehyde.  An interpolymer was also prepared from N-butoxymethyl acrylamide, styrene, ethyl acrylate, and methacrylic acid.  Amides of dicarboxylic acids such as fumaramide and inoleinuric acid may also be used.  Examples are given of the preparation of the epoxide group-containing polyesters.  The compositions contain conventional pigments and are heat-hardenable.ALSO:An aluminium sheet was coated with an enamel comprising a pigment and a hardenable composition comprising (1) an interpolymer of an unsaturated carboxylic amide and at least one other comonomer, said interpolymer having amide groups having a hydrogen atom replaced by -CHROR, where R is H or an alkyl radical and R1 is H or an organic radical, and (2) from 3 to 50% by weight of a polyester containing unreacted epoxy groups, said polyester being the reaction product of a polyepoxide with a preformed esterification product of a polyhydric alcohol and a polycarboxylic acid, said esterification product having unreacted carboxyl groups at least 1 mole of polyepoxide being used per unreacted carboxyl equivalent in the esterification product (see Division C3).  The composition is heat hardenable.
Patent GB-867450-A (GB)
Title: Process for treating aqueous solutions containing oleaginous materials
IPC: C02F1/52
Filed: 1958-12-09
Abstract: A process for treating a used aqueous viscose-treating solution containing no more than about 3% of oleaginous viscose spinning additives comprises adding an aqueous dispersion of no more than about 6% by weight of bentonite to the used aqueous solution in a proportion of at least about 3 parts by weight of bentonite for every 1 part by weight of oleaginous additives, thoroughly mixing the dispersion and the used aqueous solution in the presence of no more than about 1 part by weight of a cation active quaternary ammonium compound for every 5 parts by weight of bentonite, and separating the resultant agglomerated bentonite-oleaginous additives complex from the used aqueous solution, thereby leaving the solution substantially free of oleaginous additives and readily treatable by standard recovery processes.  After separation of the agglomerated bentonite-oleaginous additives complex, the used solution may be contacted with a cation exchange resin to adsorb the zinc ions from it, after which the contacting of the used solution and the resin is discontinued, the resin is contacted with a 20% sulfuric acid-aqueous solution to regenerate the resin and recover the zinc in the form of zinc sulfate, and the zinc sulfate is added to an unused aqueous viscose treating solution.ALSO:A process for treating an aqueous solution containing oleaginous material comprises the addition of an aqueous dispersion of hydrated colloidal clay (e.g. kaolinite, beidellite, or a montmorillonite clay such as bertonite) to said aqueous solution, thoroughly mixing said dispersion and said aqueous solution in the presence of cation active material, and separating out the resultant agglomerated clay-oleaginous material complex from said aqueous solution thereby leaving said aqueous solution substantially free of said oleaginous material and readily treatable by standard recovery processes such as an ion-exchange process.
Patent GB-880525-A (GB)
Title: Improvements relating to pulse generators
Inventor: DODDS JOHN MATHIESON
IPC: H03K3/53
Filed: 1957-12-20
Abstract: 880,525. Pulse generator circuits. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Feb. 5, 1959 [Dec. 20, 1957], No. 39668/57. Class 40(6). [Also in Group XL(b)] In a pulse generator of the type described in Specification 589,127 in which the load across which a pulse is to be generated is connected between a pair of normally charged delay circuits and in which the pulse is initiated by shorting the far end of one line where one of the conductors of each of the lines are connected together this conductor of the other line is given a high impedance between its ends by linking a magnetic core with the line. Fig. 4 shows a pulse generator in which two delay lines DLI, 2, are charged from a source (not shown) and are connected to a load, for example a magnetron oscillator, so that when a switch S, for example a gas discharge tube is closed, the end of the line DL1 is shorted, a negative pulse thus travels along this line to the load, passes back along lines DL1, 2 being reflected with inverted polarity from line DL1 and with the same polarity from the end of line DL2. Thus the reflected pulses cancel out at the load and a pulse of duration 2T, where T is the one-way transit time of each line, is generated a period T after the closure of switch S as shown in Fig. 2. In order to prevent the load from being short circuited at high frequencies along the outer conductor of line DL2, a magnetic core H1 is linked with the line thus isolating the points BD for the duration of the pulse by forming a high impedance between its two ends. In the modification shown in Fig. 5 the output of the two circuits of the kind described in Fig. 4 are connected in series so that the pulses which are initiated by simultaneously closing switches S, S1 will be additive across the load. Since the outer conductors of lines DL1<SP>1</SP> and DL2 are interconnected electrically throughout their length a large magnetic core H3 links with both of the lines and at the same time the two ends of the outer conductor of line DL2<SP>1</SP> are separated by the high impedance of core H2. In a further modification, Fig. 3 (not shown), the core H2 is replaced by two cores separated along the conductor and a point between them is coupled to the outer conductor of lines DL1<SP>1</SP>. Fig. 7 shows a modification in which the left part of line DL2<SP>1</SP> is threaded through a large core H6. Various types of D.C. charging circuits are described with reference to Fig. 8, Fig. 9 (not shown), in which an H.T. supply via combinations of chokes and rectifiers are used. Fig. 10 shows an arrangement in which lumped characteristics may be employed in place of the concentric cable, two sections of lines AL1, 2 are linked at the centre by a few turns which are themselves linked with the magnetic core H. Specification 839,854 also is referred to.
Patent GB-1399689-A (GB)
Title: Cationic dyestuffs
IPC: C07D273/06
Filed: 1973-08-23
Abstract: 1399689 Cationic dibenzo-oxadiazepine dyestuffs BAYER AG 23 Aug 1973 [24 Aug 1972] 39939/73 Heading C4P A cationic dyestuff has the Formula (I) in which A and B independently denote an aromatic-carbocyclic or aromatic-heterocyclic radical to which a further ring is optionally fused, D denotes a group -OR 2 , -SR 2 , or -NR 1 R 2 , R 1  denotes a hydrogen atom or an alkyl, cycloalkyl, aralkyl, alkenyl or aryl radical, R 2  denotes a hydrogen atom or an alkyl, cycloalkyl aralkyl, aryl or a heterocyclic radical or an -NH 2  group or a group of formula the radicals R 1  and R 2  are optionally cyclized with each other or with B, E denotes a direct bond or bridge member, D 1  denotes the groups -O-, -S-, or -N(R 1 )-, R denotes H, or an alkyl, aralkyl, alkenyl, alkoxy or aryl radical, X denotes a bridge member and An<SP>(-)</SP> denotes an anion; and in which the rings A and B and the foregoing cyclic and acyclic radicals are optionally substituted by one or more further non- ionic substituents, or a mixture of a cationic dyestuff of Formula (I) in which the group R is attached to the azo nitrogen atom adjacent to ring A, and a dyestuff in which group R is attached to the azo nitrogen atom adjacent to ring B. The examples reveal a series of dibenzooxadiazepines which may be quaternized with a compound R-An. The dyestuffs produce red or violet hues on dyed or printed textile and non-textile materials such as leather, tannintreated cotton, cellulose, polyamides and polyurethanes, and lignin-containing fibres such as coir, jute and sisal. They may be used in writing fluids, rubber stamp inks and ball point pen pastes, and in flexographic printing. Polymers or copolymers of acrylonitrile, or asymmetrical dicyanoethylene, and acid-modified polyesters or polyamides may also be treated. The dyestuffs may be added to spinning solutions for producing fibres containing polyacrylonitrile.