baber/WOPTO huggingface dataset:
Patent GB-737307-A (GB)
Title: Improvements in and relating to apparatus for measuring direct current
IPC: G01R19/20
Filed: 1953-11-26
Abstract: 737,307. Transformers and inductors. GENERAL ELECTRIC CO. Nov. 26, 1953 [Nov. 28, 1952], No. 32880/53. Class 38 (2). [Also in Group XXXIX] Apparatus for deriving A.C. of substantially rectangular waveform proportional to D.C. comprises a reactor having a saturable core 9 encircling a busbar arrangement 7, 8 carrying the D.C., there being a secondary winding on the core 9 whose turns are distributed round the core in a non-uniform manner to correspond with the non-uniform spacing of the lines 11 of constant M.M.F. This latter non-uniformity follows from the design requirements of a reactor carrying heavy D.C., resulting in a non- circular bus-bar and core. The A.C. winding may comprise two parts connected in series and wound on separate wound strip cores 9, 9<SP>1</SP> in opposite directions relative to the M.M.F. produced by the D.C. The cores and coils are clamped in place between a number of pairs of spacer blocks 18 bolted between frame plates 13, 14 at points along the core. The frame plates are of non-magnetic material such as laminated plastic. Each part of the winding may comprise several parts in parallel.
Patent GB-857939-A (GB)
Title: Desulfurization of hydrocarbons
IPC: C07C7/148
Filed: 1959-09-28
Abstract: Crystallisable aromatic hydrocarbons having sulphur-containing impurities are purified by treating with a complex compound of BF3 in the presence of an inert solvent in which both the hydrocarbon and the complex are completely or considerably soluble, and separating the hydrocarbon, e.g. by crystallisation. The purifications of naphthalene and acenaphthene are mentioned using as solvent nitrobenzene or acetophenone.  The BF3 may be complexed with formic or acetic acid, methanol or other alcohol, ethers and phenols. Specifications 571,398 and 912,344 are referred to.
Patent GB-1015637-A (GB)
Title: Process for separating crystals of l-glutamic acid from fermentation broth
Inventor: YAMAMOTO SOTOO
IPC: C12P13/14
Filed: 1962-08-28
Abstract: L-Glutamic acid crystals are separated from a fermentation broth by adjusting the pH of said broth with hydrochloric acid to 3.2 in the presence of at least one kind of surfactant.  The broth is preferably pretreated with a polyoxyethylene alkylamine, a polyoxyethylene lauryl ether, active charcoal or tannic acid to remove impurities therein.  Alternatively, the broth may be pretreated with 10 to 50% by volume of a filtrate from which L-glutamic acid and impurities have already been removed. Specified surfactants are sodium lauryl sulphate and quaternary salts of the formula [R-N(CH3)3]+Cl-(where R represents C8-18 alkyl).
Patent GB-648221-A (GB)
Title: Improvements relating to push button electric switches
IPC: H01H3/50
Filed: 1948-12-22
Abstract: 648,221. Latching and unlatching switches. DOWTY EQUIPMENT, Ltd., and SNELL. M. S. Dec. 22, 1948, No. 33069. [Class 38(v)] In a push-button switch having means whereby the button can be locked against normal operation, said means may be overcome in an emergency by the application of a force in the same sense as, but considerably in excess of, that necessary for normal operation. A tube 12 forming part of a push-button is slidable on a stem 11 having an annular channel 13 engageable by a portion 16 of a locking member in the form of a wire loop 14 pivoted at 15 to the switch base. The loop is attached to the armature 17 of an electromagnet 19 which when energized, unlocks the pushbutton by withdrawing the loop from channel 13 against .the action of a spring 20. Emergency operation of the push-button may be effected by pressing hard thereon, and causing the tube 12 to deform portion 16 into engagement with a chamfered surface 22 in the channel 13 which deflects said portion outwards to a position in which it may be byepassed by the tube. In a modification, the locking member is rigid and the push-button comprises inner and outer end parts united by a bowed strut. Normally the two parts move together and when locked, the locking member engages the inner part. In an emergency, the application of sufficient pressure to the push-button causes the strut to bow still further and permits the outer part to move relatively to the inner part and in so moving actuate the switch.
Patent GB-975307-A (GB)
Title: Process for improving the fastness properties of dyeings
IPC: D06P1/62
Filed: 1963-08-21
Abstract: Aqueous solutions of alkali metal or ammonium salts of condensation products of formaldehyde or acetaldehyde and a sulphonic acid of a dihydroxydiphenylsulphone are used to aftertreat dyeings on synthetic polyamides. In the examples (1) 4,41-dihydroxydiphenylsulphone was reacted with H2SO4.H2O in acetic anhydride, the acetic anhydride was then removed by distillation and the reaction mixture reacted with 30% formaldehyde and latex neutralized with NaOH, (2) the same procedure was followed using a mixture of 85% 4,41-dihydroxydiphenylsulphone and 15% 2,41-dihydroxydiphenylsulphone as starting materials.ALSO:Dyeings produced with acid dyes on synthetic polyamide articles are after-treated with an aqueous solution of an alkali metal or ammonium salt of a condensation product of a lower aliphatic aldehyde, e.g. formaldehyde or acetaldehyde, and a sulphonic acid of a dihydroxydiphenylsulphone. The condensation product may be produced by reacting 1-1.5 mol sulphuric acid monohydrate with 1 mol dihydroxydiphenylsulphone followed by reaction with 0.5-1 mol aldehyde.  Two examples are given using 4, 41-dihydroxydiphenylsulphone and a mixture thereof with 2, 41-dihydroxydiphenylsulphone.
Patent GB-1104525-A (GB)
Title: Free-rotor gyro
IPC: G01C19/00
Filed: 1966-07-22
Abstract: 1,104,525. Variable resistors. GENERAL PRECISION SYSTEMS. 22 July, 1966 [5 Oct., 1965], No. 33119/66. Heading H1S. [Also in Division G1] A variable resistor comprises a sheet of photoconductive material 175 having disposed thereon and parallel to each other a resistance coil 164, preferably in the form of a high resistance strip and a conductor bar 168. The resistor is described as being used for determining the angular precession of a gyroscope rotor about a desired axis. Light from a lamp 154 is focused in the form of a narrow slit beam on the polished underside of the rotor and is then reflected on to the sheet 175. The beam of light electrically connects the coil 164 and bar 168 and since the portion of the reflected light beam depends on the tilt of the rotor about the desired axis, the resistor will give an output dependent on the tilt.
Patent GB-1483548-A (GB)
Title: Modulatable friction plate clutch controlled by a pivoted valve element
IPC: F16D43/284
Filed: 1975-08-08
Abstract: 1483548 Friction clutches TWIN DISC Inc 8 Aug 1975 [22 Aug 1974] 33126/75 Heading F2C In an hydraulically operated continuously slipping friction clutch wherein clutch plates 6, 11 splined to a driving drum 2 and a driven hub 10 are clamped together by pressure liquid in a servo chamber 16, a valve element 40 responsive to speed, acceleration and control pressure is pivoted on the driving or, as shown, driven member 15 and controls an exhaust duct 52 from the servo chamber 16 to vary the pressure therein and thus the clutch slip. The clutch engaging servo pressure is supplied from a pump 24 through an orifice 50 to the chamber 16 and is exhausted therefrom through the duct 52. The servo pressure additionally acts on a ball. 58 to make the operation of the valve element 40 independent of servo pressure. Control pressure is supplied from a pump 32 through a control valve 34 to a ball 70 acting on the element 40 and through an orifice 76 to an opening 72 which directs the pressure liquid on to the element 40. The element 40 carries a weight 44 subject to centrifugal and acceleration forces. For a predetermined control pressure the clutch output speed is maintained constant by the valve element 40 throttling the servo chamber exhaust 52 and thus varying the pressure in the clutch engaging servo chamber 16 in response to centrifugal and acceleration forces. The utilization of both centrifugal and acceleration forces on the element 40 produces rapid response to deviations from the desired output speed. The valve 34 permits variation of the control pressure and thus variation of the clutch output speed. The clutch may drive a load through a torque converter TC.
Patent GB-629853-A (GB)
Title: Improvements in or relating to garnitures for cigarette-making machines
IPC: A24C5/18
Filed: 1947-12-16
Abstract: 629,853. Artificial stone. MOLINS, D. W., RUAU, F. F., BRUCE, C. G., and MOLINS MACHINE CO., Ltd. Dec. 16, 1947, No. 33144. [Class 22] [Also in Group VI] The rubbing surface of a garniture base for a continuous rod cigarettemaking machine is formed on an inset 1 made of a ceramic material containing at least 75 per cent of aluminium oxide or silicon carbide, the inset being mounted in a support 2 made of a reinforcing material, e.g. steel. As described, the complete inset is divided longitudinally into 4 parts formed to make a continuous groove 9 diverging at one end, and two grooves 10 are formed on the underside to reduce the thickness to that under the groove 9 to reduce shrinkage when the material is fired. The insets are bonded to the support by a plastic material, e.g. one comprising a phenol formaldehyde compound with polyvinyl, and they may have separate guides 11 of ceramic material bonded to steel bases 12, and ceramic-faced folders. The inserts are formed by firing a moulded mixture of preferably 90 per cent aluminium oxide with zirconium oxide and grinding with silicon carbide wheels. If silicon carbide is used for the insets, diamond wheels are used for the grinding.
Patent GB-646731-A (GB)
Title: Improvements in cycle and like bells
IPC: G10K1/072
Filed: 1947-12-17
Abstract: 646,731. Cycle bells. SPURRELL, R. W. Dec. 17, 1947, No. 33238. [Class 13] In a cycle or like bell, a slot 10 in the base plate 2 engages a pin 9 to oscillate a striker lever 5 during the movement of a finger lever 1 to which the striker lever 5 is pivoted at 6. The slot 10 is so shaped as to give a double oscillation of the striker lever 5 during a single oscillation of the finger lever 1.
Patent GB-868796-A (GB)
Title: Improvements in and relating to the voltage control of electric generators
Inventor: KWASNICA ADAM WAWRZYNIEC ANTON
IPC: H02P7/34
Filed: 1956-10-31
Abstract: 868,796. Automatic generator control systems. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Sept. 30, 1957 [Oct. 31, 1956], No. 33243/56. Class 38 (4). In a system for maintaining a desired relationship between the output voltages of two generators G1, G2, Fig. 1, wherein both generators have field windings F1, F2, supplied from similar amplifiers A 1 , A 2 , having control windings AF1, AF2, the control windings are either connected, in series to the amplifier output terminals of similar polarity or to similar terminals of two tacho-generators driven respectively by two motors supplied from the two generators or separately to a voltage which varies as the voltage of the other generator. Feedback windings FB1, FB2, Fig. 4, entergized from the respective generators are opposed to equalizing windings AF1, AF2 which are energized respectively by the difference between the other generator voltage and a reference voltage VC. In a modification described with reference to Fig. 5 (not shown), the reference voltage and the other generator output voltage are supplied to separate field windings.
Patent GB-502506-A (GB)
Title: Improvements in or relating to circuits for operating high-pressure mercury vapour lamps
IPC: H05B41/231
Filed: 1937-12-01
Abstract: 502,506. Supply systems for discharge lamps. GENERAL ELECTRIC CO., Ltd., and FRANCIS, V. J. Dec. 1, 1937, No. 33246. Addition to 486,586. Drawings to Specification. [Class 38 (iv)] The arrangement described in the parent Specification is modified by its connection to A.C. mains through a close wound transformer or by the replacement of such a transformer and the choke L of the parent Specification by any equivalent circuit elements or connections. The choke L may be arranged on the primary or secondary side or both of the transformer or it may be partly or wholly incorporated in it, if it is of the stray-field type. A combination of these alternatives may also be used. Specifi. a tion 491,071 is referred to.
Patent GB-1240379-A (GB)
Title: Neutron counters
Inventor: GOODINGS ANTHONY
IPC: H01J47/12
Filed: 1969-07-01
Abstract: 1,240,379. Detecting neutrons. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. 30 June, 1970 [1 July, 1969], No. 33290/69. Heading G6P. A neutron counter, employing the reaction consists of the tungsten anode wire, 10, supported in a boron trifluoride atmosphere within the aluminium tube 1. The wire 10 passes through the seal 6a and 6b in end plug 2. The extension 7 of the ceramic sleeve 6b provides an extended path for migrating joint braze material and for boron from the tube atmosphere so as to delay deterioration of the seal insulation. The wire 10 is tensioned by the spring 13a supported on the silicon disc 14.
Patent GB-484505-A (GB)
Title: Improvements in jointing sleeves or ferrules for electric cables
IPC: H02G15/18
Filed: 1936-12-04
Abstract: 484,505. Sleeve couplings ; casting joints. BEAVER, C. J., DAVEY, E. L., and GLOVER & CO., Ltd., W. T. Dec. 4, 1936, No. 33309. [Class 38 (i)] [Also in Group XXII] A split sleeve 1 for joining cables is furnished with reduced ends 4 and is completed by a pair of end caps 5 recessed at 7 to fit over the portions 4 and form tapering surfaces to give smooth transition between the diameter of the cable core and that of the sleeve 1. The caps also hold the sleeve in place and close the ends of the slot 2 to prevent escape of the solder when the sleeve is being filled. A groove 3 formed in the sleeve 1 opposite to the slot 2 facilitates opening of the sleeve to pass it over the abutting cable ends.
Patent GB-783485-A (GB)
Title: Writing instruments provided with retractable writing points
IPC: B43K24/03
Filed: 1955-11-21
Abstract: 783,485. Reservoir pens. REGNAULT, E. G. Nov. 21, 1955 [Nov. 30, 1954; July 23, 1955], No. 33315/55. Class 146(3) A reservoir pen comprises a barrel 1 provided with an axial opening 2 which permits a cartridge 5 including an ink container and writing member 8 to be projected for writing purposes, a weight 9 associated with the cartridge to move inside the barrel and guide the cartridge, and means for retaining the cartridge in position in writing position. As shown when the pen is held with the point downwards, a collar 6 on the cartridge 5 supports a slidable metal sleeve which forms the weight 9 and causes the cartridge to move sideways so that its end 10 engages the rim of a screwed plug 3 to retain the cartridge in writing position. A shoulder 7 on the cartridge engages the opening 2 to limit the outward movement of the cartridge When it is desired to retract the writing point 8 which may be a ball-point, the pen is held with the point vertically upwards to permit the cartridge 5 to retract under its own weight, the weight 9 guiding the rear end 10 of the cartridge into a bore 4 of the plug 3. In a modification, the weight is fitted on a separate stem with an enlarged head which engages the rear end of the cartridge, the rear end of the stem being received in a screwed plug when the cartridge is retracted and engaging the rim of the plug when the cartridge is in writing position.
Patent GB-201097-A (GB)
Title: Improvements in and relating to means for burning oil fuel for furnaces and like purposes
IPC: F23D11/10
Filed: 1922-12-06
Abstract: 201,097. Altshyller, I., Osterman, R., H., and Krance, D. V. Dec. 6, 1922. Spray burners.-Oil fuel fed from a pipe h on to a plate f is blown by a steam jet from a pipe b into the interior of the furnace. The oil and steam pipes h, b and the plate f may be mounted on pivots d, c so that they can be swivelled vertically and horizontally.
Patent GB-1294500-A (GB)
Title: Hot bleaching of human keratinic fibres
Inventor: GHILARDI GIULIANA
IPC: A61K8/49
Filed: 1970-07-09
Abstract: 1294500 Bleaching and dyeing hair L'OREAL 9 July 1970 [9 July 1969 25 Feb 1970] 33471/70 Headings D1B and D1P Human keratinic fibres are bleached by applying thereto a composition comprising an oxidising agent conventionally used for bleaching human keratinic fibres and at least one active ingredient having the formula: in which each of R 1  and R 2 , which may be the same or different, represents a hydrogen atom, a C 1-5  alkyl radical, a hydroxymethyl radical or an alkoxymethyl radical, the alkoxy group of which has 1-5 C atoms; or R 1  and R 2  together represent a -CH 2 -CH 2 - radical thus forming with the adjacent N atoms and intermediate C atom a 5-membered ring, which radical may be substituted by hydroxyl or alkyl groups; R 3  represents a -O-R 5  or group, in which R 5  represents a hydrogen atom or a C 1-5 , alkyl radical and each of r and r<SP>1</SP>, which may be the same or different, represents a C 1-5  alkyl radical, or r and r<SP>1</SP> together with the N atom to which they are attached form a ring optionally containing an additional hetero-atom; and R 4  represents a hydrogen atom, a C 1-5  alkyl radical or a -CH 2 -R 3  group. Specified active ingredients are mono- and di-methylolthiourea, methoxymethylthiourea, mono- and di-methylolethylenethiourea, mono- and di-morpholinomethylthiourea, and dimorpholinomethylethylenethiourea. The oxidising agent may be hydrogen peroxide optionally in admixture with a peroxide, e.g. urea peroxide, or a per-salt, e.g. sodium or potassium percarbonate or persulphate. The composition may also contain a dyestuff such as a disperse, complexed or soluble azo dyestuff or a nitro dyestuff. It may be prepared in the form of a two-component pack, one component being the active ingredient (plus dyestuff if required) and the other component being the oxidising agent. Where compositions are used which have an alkaline pH at the end of treatment, the hair is subsequently rinsed with an acidic solution, e.g. of lactic, acetic or formic acid. On application, the compositions undergo a spontaneous rise in temperature which accelerates the bleaching effect. They also strengthen the hair, and, in cases in which nascent sulphur is liberated, they have an anti-seborrhoeic effect.
Patent GB-1132757-A (GB)
Title: Improvements in or relating to apparatus for use in pictorial reproduction
IPC: G01B5/02
Filed: 1966-07-26
Abstract: 1,132,757. Gauging dimensions. J. D. LAWSON. July 26, 1967 [July 26, 1966], No.33603/66. Heading G1M. In apparatus for visually indicating the dimensions of enlarged or reduced projections of a selected area of a photograph or picture, the photograph or picture is placed between a base 11 and a transparent sheet 12 bearing a graduated grid, a cursor 13 being pivotally mounted to a corner of the base 11. In use, the cursor is moved to intersect various points on the selected area, and simultaneously the width and depth for various magnifications or reductions of the selected area can be read from the sheet 12. The sheet 12 may be of a magnifying plastic.
Patent GB-1114596-A (GB)
Title: Methods of and apparatus for separating mixtures by contacting materials in different phases
IPC: G01N30/58
Filed: 1965-08-05
Abstract: 1,114,596. Separating mixtures by contacting materials in different phases. UNIVERSAL FISHER ENGINEERING Ltd. and P. F.. BARKER. 29 July, 1966 [5 Aug., 1965; 14 Oct., 1965], Nos. 33630/65 and 43629/65. Headings B1F and B1L. Separating mixtures e.g. using chromatography techniques, by contacting materials in different phases by circulating solid phase material in a closed loop column into which fluid phase material is introduced, in which all the fluid phase is caused to flow countercurrent to the solid phase material circulated around the column so that all the fluid flow is available for mixture separating. An endless column of solid phase material is packed in segments of an annular duct 13 formed by the rim of a rotatably journalled wheel 12 which has port members 37A-37D spaced round the wheel for the -extraction and introduction of fluid phase materials. Each segment contains a heat exchange coil 15 and communicates with the next adjacent segment through a by-pass valve 17 connected by conduits 18 to ports 19 on opposite sides of a partition 14. The part members each have a pair of ports which register with two circles of valved parts 40 in the wheel rim. When operating in batch mode to separate mixtures by chromatography, carrier gas under pressure enters the column through part member 37A and is withdrawn by a pump at member 37D. The sample is injected into this gas stream just prior to its entry at point A and the speed of rotation of the wheel is such that the sample is maintained at the same angular position relative to the wheel hub for as long as is necessary for adequate separation. Separation detectors may be mounted through valves 17. When operating in continuous mode the carrier gas is introduced at point A and exhausted at point D while the sample is introduced at point C and the individual fractions collected at points D and B.
Patent GB-446111-A (GB)
Title: Improvements relating to the building up of surfaces of track rails of tramways, railways and the like
IPC: E01B31/18
Filed: 1934-11-24
Abstract: 446,111. Repairing track rails. DEGLON, C. R., Lomati, Stokesay Road, Ashtonon-Mersey, and ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Crown House, Aldwych, London. Nov. 24, 1934, No. 33849. [Class 83 (iv)] [See also Groups XI and XXIII] Uniting by fusion.-The surfaces of worn track rails for railways, tramways, &c. are built up in situ by preheating the rail by electric induction heating and then welding additional metal thereto. Rapid cooling is thus avoided to produce a joint of the desired composition and structure. The preheating may be of the order of 250 to 550‹ C. and a similar treatment may be effected after welding. The preheating may be continued during welding or may be effected on a successive section of the rail during welding of the preheated section. Surface cracks and fissures and the work-hardened surface may be removed by grinding before welding and preferably before preheating, and grinding may also be effected after welding. Welding may be effected by the direct current arc or by an alternating current arc supplied from an alternator with a frequency of 300 cycles per second and the grinder may be operated by a motor driven by the alternator or by direct current supplied from the exciter of the alternator. The preheater may be controlled automatically or the conditions indicated by visible or audible signals by a device responsive to the temperature of the rail head. In Fig. 1, a prime mover 1, such as an internalcombustion engine which may also traverse the devices as a portable unit along the rails, rotates a shaft carrying an alternator 2 for supplying the preheater 5, 6 and for operating the grinding motor 9, and a direct current generator 3 for the arc welder 8 and a separate exciter 4. In a modification, an alternator may be provided with a commutator and also slip rings for supplying direct current for welding and alternating current for preheating and grinding. In Fig. 2, the internal combustion engine 11 drives an alternator 12 and exciter 13, for supplying alternating-current to the welder 17, preheater 14, 15 and grinding motor 19. The welding circuit may contain a stabilizing choke 18 or the coil 14 of the preheater may be connected in the welding circuit to serve also as a choke either alone or together with a smaller choke coil. The core of the preheater is of U-shape to sit astride the rail and detachable polepieces may be used to suit the shape of the rail heads, e.g. on curves, at points, cross-overs, &c. The core limbs may extend from 1 to 3 feet along the rail. According to the Provisional Specification direct or alternating current may be used directly to preheat the rails.