baber/WOPTO huggingface dataset:
Patent GB-943737-A (GB)
Title: Improvements in or relating to the production of carbon disulphide and hydrogen sulphide
Inventor: BANKS ARTHUR ASHTON
Filed: 1958-11-12
Abstract: Carbon disulphide and by-product hydrogen sulphide are produced by reacting a preheated, vaporized, hydrocarbon feed consisting predominantly of hydrocarbons having at least 5 carbon atoms/molecule and which is liquid at ambient temperature and is substantially completely vaporized at below 200 DEG  C., with sulphur vapour in the presence of a catalyst, without premixing of these reactants prior to entry into a reaction zone containing the catalyst and which is maintained at 700-1300 DEG  C. The hydrocarbon feed may be aliphatic, alicyclic or aromatic preferably consisting predominantly of hydrocarbons having at least 6 carbon atoms/molecule.  The reaction may be effected under atmospheric pressure and at 800-900 DEG  C. under isothermal or adiabatic conditions. To avoid cracking of the hydrocarbon feed by preheating at high temperature, the sulphur vapour may be superheated and the hydrocarbon feed preheated to a correspondingly lower temperature.  The reaction may also be effected in the presence of hydrogen, preferably introduced with the hydrocarbon feed, to produce exothermic reaction with the sulphur to avoid corrosion of the apparatus by sulphur vapour preheated to too high a temperature. Under adiabatic conditions in practice with a well lagged reactor the reactants are preheated to 700 DEG  C. to promote exothermic reaction.  Catalysts referred to are: molybdenum oxide/g -alumina, nickel/a -alumina or silica gel, chromium with molybdenum oxide/g -alumina or vanadium oxide/silica gel or corundum, and preferably potassium vanadate/silica gel or corundum. The catalyst may be employed as a static, moving, or fluidised bed. Gases leaving the reaction zone are cooled to condense sulphur which is recycled, further cooled, or washed with light oil to isolate carbon disulphide, and washed with aliphatic amine to isolate hydrogen sulphide.  Hydrogen sulphide after recovery from the amine may be converted to sulphur by the Claus process, such sulphur being recycled, or may be employed as such, for example, in the manufacture of sodium sulphide.  Dilution of the hydrocarbon feed with an inert gas, e.g. nitrogen, is also referred to.  Specifications 644,030 and 798,947 are referred to.
Patent GB-1272487-A (GB)
Title: Improvements in or relating to dairy equipment
Inventor: FINCH NIGEL
IPC: A01J5/017
Filed: 1969-07-18
Abstract: 1,272,487. Milking equipment. ALFALAVAL A.B. 17 July, 1970 [18 July, 1969], No. 36423/69. Heading A1M. Milking equipment includes a teat cup cluster, movable between a milking position to an inoperative position. The equipment is vertically adjustable, and comprises a teat cup cluster 10, Fig. 2, carried on a support structure 12, held firmly to support arm 14 by cylinder 14b for movement of equipment by cylinder 15 between the two extreme positions, but, in the milking position, allowing relative movement between the support arm and the teat cluster. A flow detector, Fig. 3, is used with the equipment to detect the end of milking. Cup 22 fills when the milking rate is higher than the drainage rate through aperture 23, and empties and thus rises, under the action of spring 26, when the milking rate reduces, operating microswitch 27, which actuates the pneumatic cylinders, via solenoid operated valves, and this moves the cluster away from the milking position. (For Figure see next column)
Patent GB-1106659-A (GB)
Title: Improvements in or relating to frequency modulators
IPC: H03C/
Filed: 1965-08-24
Abstract: 1,106,659. Frequency modulation; pulse modulation systems; transistor oscillators. SIEMENS A.G. 24 Aug., 1965 [26 Aug., 1964], No. 36424/65. Headings H3R, H3T and H4L. A frequency modulated oscillator comprises an astable multivibrator including two transistors Tr1 and Tr2, the bases of which are connected by an inductor having negligible hysteresis. In one arrangement, Fig. 1, the two emitters are earthed, the bases are connected to each end of an inductance L, and each collector is connected to the base of the other transistor, the two collectors being connected also through respective resistances R1 and R2 to opposite ends of the primary winding of a transformer U1 The centre tap of the primary winding is connected through a resistance R3 to a positive potential source Ub and through a low-pass filter TP to the modulating voltage Um. The output is taken from the secondary winding of transformer U1. In another arrangement, Fig. 2 (not shown), the power supply and the modulating voltage are connected to the centre tap of the primary winding of a transformer (U2), the ends of the winding being connected to the bases of the transistors. Each collector is connected to the base of the other transistor, the emitters are earthed, and the output is taken from the secondary winding of the transformer (U2). In a further arrangement, Fig. 3 (not shown), a negative potential and the modulating voltage are supplied to the two emitters, and the collectors are connected to opposite ends of the primary winding of a transformer (U3), a centre tap on the winding being connected to a positive potential source. The secondary winding of the transformer (U3) has an earthed centre tap and its two ends are connected to the two bases which are also connected by a pair of oppositely poled diodes D1 and D2 which limit the currents flowing through the transistors. The output can be taken from a third winding on the transformer (U3) or from a separate transformer connected between the two collectors.
Patent GB-395602-A (GB)
Title: Purifying zinc metal
IPC: C22B19/32
Filed: 1932-12-23
Abstract: 395,602. Distilling zinc. NEW JERSEY ZINC CO., 160, Front Street, New York, U.S.A.-(Assignees of Ginder, P. M., Peirce, W. M., and Waring, R. K. ; Palmerton, Pennsylvania, U.S.A.) Dec. 23, 1932, No. 36503. Convention date, July 2. [Class 82 (i).] Zinc contaminated with more volatile impurities such as cadmium is purified by passing the vapour upwards through a rectifying column in countercurrent with descending molten metal, the purified metal being removed from the bottom and the cadmium &c. at the top. In the form shown in Fig. 1, zinc contaminated with cadmium &c. is vaporized in a retort 10, and the metal vapour passes into a heat-insulated rectifying column 14 which comprises baffle plates 15 on which molten metal is retained in shallow pools. The cadmium-rich distillate escapes through an outlet 18, while the purified zinc passes back to the retort from which it may be tapped at 12. In the plant shown in Fig. 3, impure molten zinc is charged through a tube 21 to the base of a rectifying column 14 which has an externally heated downward extension 14<1>. Cadmiumrich zinc vapour escapes from an outlet 32, and refined zinc is tapped at 27. In other forms, the column may comprise a series of shallow saucers each having an edge cut away and arranged in staggered form, and the purified zinc may be removed at an annular sump above the lower section of the column. The cadmiumrich vapour may be completely condensed by means of a closed condenser surmounting the top of the column and provided with an annular sump furnished with a tap-hole. Specification 392,361 is referred to.
Patent GB-441234-A (GB)
Title: Improvements in and relating to pile drivers
IPC: E02D7/12
Filed: 1934-12-22
Abstract: 441,234. Pile drivers. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(Menck & Hambrock Ges. ; 78, Grosse Brunnenstrasse, Altona, Hamburg, Germany. Dec. 22, 1934, No. 36858. [Class 68 (ii)] An internal-combustion piledriver comprises a cylinder and piston which separate after each explosion. The cylinder-ram 1 moves on guides 2 attached to a base 3 placed on a pile to be driven, and comprises a bore 6 fitting over a piston-like projection 5. An explosion in the bore 6 throws the ram 1 upwards, the rise being checked by a dash-pot piston 8 in the bore 7, until the cylinder 1 rises above the piston 5. The explosion gases then exhaust, and the air in the bore 7 lifts the valve 13 and passes in to the bore 6, displacing the exhaust gases. As the cylinder 1 descends, air enters the bore 7 through the valves 12, 15, and at the bottom of its fall fuel is injected to ignite spontaneously and begin the next cycle. In a modification, the guides 2 are replaced by a central guide tube fitted in the end of the piston 5 and passing through the cylinder ram 1 ; perforations in this tube function in the place of the valve 13.
Patent GB-760209-A (GB)
Title: New nitrile compounds and process for their production
Filed: 1954-12-21
Abstract: The invention comprises nitriles of the general formula RR1R2C.CH2.CH2CN, wherein R, R1 and R2 are alkyl groups, and their preparation by reacting at an elevated temperature, and preferably in the presence of a solvent for the cyanide, a halide RR1R2C.CH2CH2Hal with an alkali metal cyanide.  The solvent advantageously contains hydroxyl groups, glycols and polymers thereof being particularly suitable.  Examples describe the preparation of neohexyl cyanide, g ,g -dimethyl-n-amyl cyanide and g -methyl-g -ethyl-n-amyl cyanide.
Patent GB-863657-A (GB)
Title: Improvements in or relating to transistor oscillators
Inventor: ALLVEY COLIN HENRY WILLIAM
IPC: H03L5/00
Filed: 1958-11-17
Abstract: 863,657. Transistor oscillating circuits. GENERAL ELECTRIC CO. Ltd. Nov. 11, 1959 [Nov. 17, 1958], No. 36972/58. Class 40(6) [Also in Group XXXV] An oscillator, comprising a transistor amplifier with positive feedback applied through a phase shifting network connected between its output and input, has a direct current, which is dependent on the amplitude of the output oscillations, applied to a transistor of the amplifier so as to control the magnitude of the direct voltage between its base and emitter, thereby to stabilize the amplitude of oscillations. A two-stage transistor amplifier, Fig. 2, has its output connected back to its input through a phase shift network comprising resistors 23, 25 and capacitors 24, 26, to form an oscillator. The output oscillations are rectified by the diode 9, and the resulting direct current is applied through resistors 14, 15 to the base of transistor 1 to vary the base-emitter potential. Direct current sources 20, 21 are also connected to the base, so that the total control potential is determined by the algebraic sum of the currents in resistors 15, and the oscillatory output is stabilized at a level determined by the two D.C. sources 20, 21. In the embodiment of Fig. 1 (not shown), the phase shift network is connected to the primary side of the output transformers and comprises an RC ladder network. Only one D.C. source is provided the resulting direct current fed to the base being the difference between that from the source and that from the diode 9. In an alternative form, Fig. 3, the output stage is in emitterfollower configuration and the feedback network is an RC ladder connected from the primary of the output transformer. One of the D.C. control sources 45, and the rectified output are connected to the first transistor as before, and a second D.C. source 46 is connected to the base of the second transistor 35. A D.C. converter, Fig. 4, comprises a three-stage amplifier 50, 51, 52 with a RC feedback network 62, to which a low-voltage is applied between terminals 58, 59. The output from the oscillator is fed via transformer 69 to an amplifier comprising transistors 53-56 connected in a push-pull parallel circuit, the output of which is rectified by a voltage doubler comprising diodes 71, 72 and capacitors 74, 76 and applied to the output terminals 60, 61. The level of oscillation and hence the D.C. output is controlled by connecting the anodes of two corona stabilizer valves 77, 78 to the output line, and their cathodes to two resistors 79, 80 the other sides of which are connected to the bases of transistors 50, 51 respectively. The oscillator circuits may be modified for control potentials of the opposite polarity by connecting a further transistor in a long-tailed pair circuit with the one to be controlled, and applying the control current to this further transistor.
Patent GB-1430594-A (GB)
Title: Disc record
IPC: G11B9/00
Filed: 1972-04-19
Abstract: 1430594 Capacitive playback disc record RCA CORPORATION 13 April 1973 37058/75 Divided out of 1430593 Heading G5R The description is the same as that of Specification 1,430,593 but the claims are directed to the record construction,
Patent GB-1114435-A (GB)
Title: Improvements relating to brushless direct-current motors
IPC: H02K29/14
Filed: 1965-08-31
Abstract: 1,114,435. Electric motors. HITACHI SEISAKUSHO KABUSHIKI KAISHA. 31 Aug., 1965 [1 Sept., 1964], No. 37134/65. Heading H2A. A brushless D.C. motor has the current flow in the armature windings varied in accordance with rotor position and the current limited to a constant value during run up by providing a first part winding which carries a current which is high on starting and decreases with rotor speed, and a second part winding which carries a current which increases with speed. The rotor position is detected by a Hall device 5 whose constant amplified output I 1  is supplied to one winding 8 such that the current in this winding will decrease with increasing speed due to the rise in back e.m.f. The second winding 8a is supplied from a speed-detecting coil 7 whose amplified output current I 2  will rise with increasing speed. In further embodiments, using only Hall generators, the second winding current is varied in the required manner by passing the Hall generator output through a filter network and saturable amplifier, Fig. 6 (not shown), or alternatively a speed-detecting coil is used to control the supply voltage to an amplifier, Figs. 7 and 8 (not shown).
Patent GB-802197-A (GB)
Title: Improvements in or relating to control systems for electric circuit breakers
IPC: H03K19/16
Filed: 1956-12-05
Abstract: 802,197. Protective cut-out arrangements. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Dec. 5, 1956 [Dec. 13, 1955], No. 37151/56. Class 38 (5). [Also in Group XXXIX] A control system for a circuit-breaker 52 having a closing coil 52cc, comprises a first " Flip-flop " element C (see Group XXXIX), controlling energization of the coil, an " And " element B (see Group XXXIX) and a circuit including normally open auxiliary circuitbreaker contacts aa1 controlling the element C, a second " Flip-flop " element A controlling the element B and a control switch CS controlling the elements A, B. When the circuitbreaker is open and the control switch CS is open, in the automatic-reclosing arrangement of Fig. 2, the on circuit of the element A is energized over the control switch contacts CSO and auxiliary contacts b of the circuit-breaker. The element A applies an output voltage to the element B which requires a second applied voltage before it produces an output voltage. This second voltage is applied over an element G and contacts CSC when the control switch is moved to the on position. The element B now applies an output voltage to the element C, which through an amplifier D energizes the closing coil 52cc. On the closing of the circuitbreaker, auxiliary contacts aa, aa1 close to energize the off circuits of the " Flip-flop " elements A, C which cease to produce any output even though the control switch may be held closed. If the circuit-breaker remains closed for a sufficient time for a delay element F to produce an output voltage, a third " Flipnop element E is rendered conductive. If then the circuit-breaker is tripped open by the energizing of the trip coil 52TC on the closure of fault-responsive contacts 51, the on circuits of the " Flip-flop " elements A, C are restored by the closing of contacts aa, aal and the element E applies the second control voltage over auxiliary contacts b1 and element G to the element B so that the circuit-breaker is reclosed. If on the other hand, the circuitbreaker should be tripped open before the delay element F produces an output voltage no automatic-reclosure occurs, as a voltage is applied to the off terminal of the element E via an element H when the element C produces an output voltage to close the circuit-breaker. Similarly, tripping of the circuit-breaker by operation of the control switch CS is not followed by automatic reclosure as contacts CST of the switch CS apply a voltage through element H to the off terminal of the element E.
Patent GB-1009446-A (GB)
Title: Halogenated esters of thiophosphoric acid containing sulphone groups and their use in pesticidal compositions
Inventor: FANCHER LLEWELLYN W
IPC: C07F9/165
Filed: 1961-10-18
Abstract: The invention comprises compounds of the general formula <FORM:1009446/C2/1> wherein R1 and R2, which are the same, are either methyl or ethyl groups and #U is an oxygen or sulphur atom.  In examples, the compounds of formulae <FORM:1009446/C2/2> <FORM:1009446/C2/3> <FORM:1009446/C2/4> and <FORM:1009446/C2/5> are prepared respectively by oxidizing p-chlorophenylthiomethyl o,o-diethylphosphorodithioate with potassium permanganate, p-chlorophenylthiomethyl o,o-diethylphosphorothiolate with potassium permanganate, m-chlorophenylmercaptomethyl o,o - dimethylphosphorothiolate with hydrogen peroxide, and o-chlorophenylmercaptomethyl o,o - diethylphosphorodithioate with potassium permanganate.ALSO:Pesticidal compositions comprise an inert pesticidal adjurant and a compound of the general formula <FORM:1009446/A5-A6/1> wherein R1 and R2, which are the same, are either methyl or ethyl groups and Y is an oxygen or sulphur atom (see Division C2).  The compositions may be solutions in solvents such as acetone or may be powders which latter may be in the form of dusts or wettable powders.
Patent GB-1338294-A (GB)
Title: 2-3-2-tetrahydrofuryl-propionyl-1,3-cyclopentanedione and  production of this physiologically active compound
IPC: C07D307/46
Filed: 1971-08-10
Abstract: 1338294 Tetrahydrofuryl - propionyl cyclopentanedione ZAIDAN HOJIN BISEIBUTSU KAGAKU KENKYU KAI 10 Aug 1971 [21 Aug 1970 1 Sept 1970] 37416/71 Heading C2C The novel compound of Formula (I) may be obtained by hydrogenation of 2[3-(2- furyl) - acryloyl] - 1,3 - cyclopentanedione in the presence of a base and of a hydrogenation catalyst comprising Pt, Pd or Rh, and optionally liberating the free form from its salt by treatment with dilute acid. The starting material may be obtained by aldol condensation of 2-acetyl-1,3-cyclopentanedione with furfural. In an example, 2-(4,5- dihydro - 5 - propyl - 2(3H) - furylidene) - 1,3- cyclopentanedione is obtained as a by-product. Pharmaceutical compositions having hypotensive activity comprise the compound of Formula (I) together with a pharmaceutical carrier in forms suitable for oral or parenteral administration.
Patent GB-931035-A (GB)
Title: A process for crimping yarns composed of continuous separate filaments
IPC: D02G1/04
Filed: 1961-10-19
Abstract: 931,035. Crimping yarns. VEREINIGTE GLANZSTOFF-FABRIKEN A.G. Oct. 19, 1961 [Oct. 19, 1960], No. 37522/61. Drawings to Specification. Class 120 (3). Yarns composed of continuous individual filaments are continuously crimped by temporarily compressing i.e. forcibly accumulating or concentrating, and setting the initial twist already on the yarn as the yarn is pulled through a linear path. Thus, yarn having a slight initial S- or Z-twist may be allowed to travel in sequence through a twist-arrester, a (heat) setting device, and through or over a thread brake, comprising a pair of small, smooth plates urged towards one another, or a rounded edge constituting a twist-compression device (or a series of such devices having a cumulative twist concentrating effect) and, optionally, through a second twist-arrester.
Patent GB-1404147-A (GB)
Title: Control of fibrous sheet making machines
IPC: G05D22/02
Filed: 1971-08-10
Abstract: 1404147 Automatic control INDUSTRIAL NUCLEONICS CORP 10 Aug 1972 [10 Aug 1971] 37558/71 Heading G3R In a fibrous sheet making machine, where the sheet basis weight is normally controlled by the material flow and the sheet moisture content by the machine dryer system, the speed of the machine is increased by a ramp signal until the dryer reaches an operating limit, when the sheet basis weight is controlled by the material flow and machine speed, and the moisture content by the machine speed. As shown, material is fed through a flow control valve 18 to a papermaking machine having a Fourdinier machine 10, a first dryer 12, a rewet or coating operation 16, a second dryer 14 and calendering and reeling apparatus 16. Under normal conditions, P1 controllers 82, 84 control the steam to dryer 12, and the opening of valve 18, according to the sheet moisture content and basis weight as measured by sensors 86, 88 at the output of dryer 12. Similarly dryer 14, which is optional is controlled by the moisture content and basis weight as measured by sensors 112, 110. provided certain machine parameters e.g. beater chest level are within set limits, a signal from controller 98 ramps up at set time intervals to increase the reference signal to speed control 26, which regulates the speed of the machine drive 22 using a motor speed feedback from tachogenerator 24. The speed increases until dryer logic 108 detects that one of the steam control valves 28 or 64, 66 to dryers 12 or 14 is fully opened for a preset time, determined by a counter counting the ramp-up time intervals. Under these conditions controllers 94, 96 take over to open steam valves 28, 64, 66 fully, and regulate the moisture content and basis weight by control of the machine speed and material flow. The machine speed correction may be limited to a predetermined value. Controllers 82, 84 resume control upon selection of a ramp down push-button 114. Flow charts for the dryer logic 108 are also disclosed.
Patent GB-1372350-A (GB)
Title: Method of manufacturing rolled products from powdery materials and  shaped rolls for carrying said method into effect
IPC: B22F3/18
Filed: 1971-11-04
Abstract: 1372350 Rolling powdered material INSTITUT PROBLEM MATERIALOVEDENIA AKADEMII NAUK UKRAINSKOI SSR 4 Nov 1971 [4 Aug 1970] 37655/70 Heading B5A A pair of rolls 7 for compacting powdered material 6 includes co-operating collars 10 at the roll ends defining a gap or nip 17 which is from 0À1 to 0À9 times the average thickness H of the product being produced, the length F of the gap being from 0À2 to 3 times the said thickness. The nip 17 leads to a wider nip 31, the width of which may be substantially equal to said thickness. A shown, the product is a pipe of rectangular cross-section shaped about a mandrel 9; a modification is described for the production of circular section pipes. Alternatively, a mandrel is not used, and one roll has a groove and the other a co-operating projection whereby products of semicircular or V-shaped cross-sections may be produced.