baber/WOPTO huggingface dataset:
Patent GB-1021240-A (GB)
Title: Improvements in and relating to electrical pulse measurement
IPC: G01R13/34
Filed: 1965-01-22
Abstract: 1, 021, 240. Measuring short time intervals; testing semi-conductor diodes. INTERNATIONAL BUSINESS MACHINES CORPORATION. Jan. 22, 1965 [Jan. 23. 1964], No. 2851/65. Heading G1U. In an arrangement for obtaining a measure of when a cyclically recurring pulse reaches a predetermined amplitude the pulse is sampled and a servo system adjusts the sampling time so that it is stabilised at the instant at which the predetermined magnitude is obtained. The system is applied to measuring the reverse recovery time of a semi-conductor diode 11, fig. 1. Pulses applied from generator 14, produce a reverse current in the diode 11 and thus develop and output pulse across resistor 13. This output pulse is sampled by gate 17, and the resulting gate output modifies the charge on a capacitor in the level hold unit 18, producing an output which is fed via amplifier 19 to unit 45 which controls the time at which the sample is taken. Initially switch 21 is set to contact 22a, connecting a reference source 26<SP>1</SP>, and switches 29, 34 are set to connect amplifier 31 into circuit. The system then stabilizes to a point on the leading edge of the diode reverse current pulse C, Fig. 2 (not shown) at which the pulse amplitude is equal and opposite to the reference voltage e 26 <SP>1</SP>. The resulting output from level hold unit 18 is fed round the system to amplifier 48 to produce a reference output e 0  which is adjustable by means of source e' R , and which corresponds to a reference time. To measure the time interval between this reference time and the time at which the trailing edge of the diode reverse current falls to some desire value switches 21, 29, 34 are set to their other positions, and voltage e R  is adjusted to correspond to the desired value at which measurement is to be made. The system will now stabilize to a new point, giving a different output e 0 , the difference between this output and the original one being a measure of the pulse width at the desired value. By varying e R , a plot of the pulse width at different amplitudes may be obtained.
Patent GB-699998-A (GB)
Title: Improvements in or relating to radar and like apparatus
Inventor: RIX EARL HENRY
IPC: G01S7/22
Filed: 1952-02-04
Abstract: 699,998. Cathode-ray oscilloscopes; voltage measurement. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Feb. 4, 1952, No. 2881/52. Class 37. [Also in Group XL (c)] In a radar system comprising a computer producing a D.C. voltage whose amplitude is proportional to range, the range is displayed by applying the range voltage to control the spacing of recurrent pairs of pulses which intensity modulate the circular trace of a synchronized cathode-ray oscilloscope. Thus the scale factor of the display may be adjusted by applying the range voltage through a calibrated attenuator and when used with a pulse radar the display need not be synchronized with the radar recurrence frequency. As shown the circular trace is produced by applying sinusoidal push-pull outputs from a free-running stabilized Wien-bridge oscillator 10 (V28, V29) in phase quadrature to the X and Y plates of the cathode-ray tube 11 via push-pull amplifiers 12, 14 and 90 degrees phase shifter 13, another output from oscillator 10 being applied via phase shifter 15 and pulse generator 16 to trigger a blocking oscillator 17 whose output pulse is mixed in the cathode load of cathode follower 20 with the range voltage from computer 19 and applied to trigger a flip-flop 18 (V 111, V114), the duration of the output square wave being proportional to the range voltage. The flip -flep output is differentiated at 21 and the pulse derived from the trailing edge is selected to trigger a second blocking -oscillator 2.2, the outputs from the two blocking, oscillators 17, 22 being applied to the grid of the cathode-ray tube 11 to produce responses 27, 24, Fig. 3, whose separation as shown by the scale 26 indicates range. Valve circuits. In the Wien-bridge oscillator V28, V29 giving a push-pull output, the frequency is determined by R36, 38 and C37, 39, divider networks R34, 35 and R42, 43 being included in the grid circuits of V28 and V29 to give distortionless high-amplitude balanced outputs. The adjustable resistor R32 varies the feedback from the anode of V29 to the grid of V28 and lamp 40 controls the degenerative voltage to maintain constant frequency and output independent of changes in the load and supply voltages. The duration of the output pulse from the cathode-coupled flip-flop V111- V114 is proportional to the amplitude of the positive D.C. voltage applied together with a positive trigger pulse to the grid of V111 via cathode follower V107.
Patent GB-228889-A (GB)
Title: Improvements in process of refining vegetable oils
IPC: C11B3/00
Filed: 1925-02-02
Abstract: 228,889. Aktiebolaget Separator, (Assignees of Hapgood, C. H., and Mayno, G. F.). Feb. 9, 1924, [Convention date]. Fatty oils, purifying.-Vegetable oils, e.g. cot. ton oil, corn oil, peanut oil, and soya bean oil are purified by treatment with fuller's earth, silica gel, diatomaceous earth, " filtro," or similar body, followed by treatment of the separated oil with the minimum of a saponifying agent required to remove the free fatty acids. Using the apparatus shown, earth and oil from a tank c, and oil at 120-220‹ F. from a tank a are run continuously through a mixer b, a settler e, and a centrifuge j. The decolorized oil is cooled to 80-120‹ F. in the interchanger m and passed to a mixer o with the requisite caustic soda, solution from a tank n. The soap and oil are separated bv a centrifuge p. The apparatus is preferably closed to the atmosphere.
Patent GB-355169-A (GB)
Title: Improvements in or relating to wheels
IPC: B60B23/08
Filed: 1931-01-29
Abstract: 355,169. Vehicle wheels. BUDD WHEEL CO., 2500, Hunting Park Avenue, Philadelphia, U.S.A.-(Assignees of Tarbox, J. P. ; 2500, Hunting Park Avenue, Philadelphia, and Eksergian, C. L. ; 12141, Charlevoix Avenue, Detroit, Michigan, both in U.S.A.) Jan. 29, 1931, No. 2950. Convention date, Feb. 14, 1930. [Class 144 (i).] Hollow metal spokes 2 are secured to the wheel rim by resilient caps 3, Fig. 2, and 10, Fig. 4, which are expanded within the spoke-ends by means of set-screws 8,14, Figs. 2 and 4 respectively. The unflanged cap 10 may be reinforced by a washer 11, and the set-screws may be locked to the rim by tack-welds 13.
Patent GB-371485-A (GB)
Title: Improvements in or relating to lampshade galleries and the like
IPC: F21V1/02
Filed: 1931-01-29
Abstract: 371,485. Lampshade &c. holders. BRAMHALL. D., 36, Ennismore Gardens Mews, London. Jan. 29, 1931, No. 2954. [Class 75 (ii).] A lampshade or the like is secured to a gallery or holder by means of three or more plungers 1 which pass freely through holes 2 in the gallery 4 and are urged inwardly by means of a resilient band 3 surrounding t h e gallery. The band 3 is in the form of a closely coiled wire spring or a rubber or like elastic band. The holes 2 may be those usually provided for set screws and the outer end of each plunger may be. formed with an eye through which the resilient band freely passes. According to the Provisional Specification, one or more resiliently mounted plungers may be employed, one or. more plungers fixed to the gallery may co-operate with resiliently mounted plungers, each plunger may be operated separately as by means of a compression spring, the plungers may be fixed to the resilient band or formed integrally therewith, the resilient band may pass through tubular portions arranged substantially tangentially on the outer ends of the plungers, or the resilient band may be formed with hooks or the like upon which the desired number of plungers may be threaded.
Patent GB-561455-A (GB)
Title: Improvements in or relating to minefields
IPC: F42B22/24
Filed: 1941-03-06
Abstract: 561,455. Signalling the proximity of submarines. COOPER, S. E., and PALMER, W. A. March 6, 1941, No. 3055. [Class 118 (ii)] A minefield for the defence of harbours and the like against underwater attack comprises a forward zone of detectors G1-7, Fig. 1, with a corresponding indicator for each detector at a control point D, an intermediate zone of mines A1-7 explodable as desired from the control point, and a rearward zone of detectors G8-14 with each detector also connected to the control point. The forward detectors serve to indicate the approximate position of a submarine as it crosses the zone, and the inner detectors indicate the further course of the submarine, thus enabling an operator to explode the mine or mines nearest the submarine. Each detector comprises an electrical soundsensitive device such as a microphone, and each detector in a row is connected to one of a number of contacts M, Fig. 2, arranged in a circle. A revolving arm L sweeps over the contacts and puts each detector in turn in circuit with an indicator, such as a sound reproducer O. The operator, by listening to or observing the indicator, can decide which detector is closest to the submarine. The mines may be controlled also by contact devices.
Patent GB-637893-A (GB)
Title: Improvements in or relating to cigarette and like cases
IPC: A24F15/12
Filed: 1948-02-03
Abstract: 637,893. Cigarette cases. COALPORT METALWARE, Ltd., and NEWBOLD, N. J. Feb. 3, 1948, No. 3071. [Class 18] The cigarette-retaining flap e in a cigarette case is mounted on the base f of a three-sided wire frame, the limbs g of which fit into the rim d of the case to maintain the base of the flap in contact with the normal case hinge c and keep it spring pressed against the contents. The flap e may have three eyes enclosing the frame,. the centre one being clamped to the frame and the others being free. Alternatively, the edge of the flap may be rolled over to enclose the base f and may be clamped in the centre, the limbs g being, in either case, at an angle to the flap e before insertion into the case. The frame may comprise two L-shaped portions, having flattened ends for clamping within the turned edge of the flap e.
Patent GB-815151-A (GB)
Title: Cyclodiene dimerizing process
IPC: C07C2/50
Filed: 1956-01-31
Abstract: Dimerisation of liquid cyclodienes, such as cyclopentadiene and methyl- and ethyl-cyclopentadienes, is carried out in at least two stages, the heat and time in the first stage being controlled to limit the amount of dimerisation to not more than 90 per cent and in each successive stage the time is decreased to limit the formation of higher polymers.  Preferred temperatures are 50-100 DEG  C. in the first stage and 100-140 DEG  C. in subsequent stages and time residence may be 3-5 hours in the first stage, and 1-3 hours in each subsequent stage.  Monomer vapour may be removed at any stage to lower the proportion of monomer passed to the following stage, the vapour being recycled to the first stage.  In an example using three stages, stage 1 at a temperature of 53 DEG  C. gives 60 per cent conversion to dimer in 4.6 hours, the second stage at 78 DEG  C. gives a further 24 per cent conversion in 1.6 hours, and the final stage at 121 DEG  C. gives a total conversion of 95 per cent after a further 1 hour, the amount of higher polymers being only 0.83 per cent.
Patent GB-396404-A (GB)
Title: Improvements in or relating to electric water-heating arrangements
IPC: F24H1/10
Filed: 1932-02-02
Abstract: 396,404. Regulating liquid levels. REYROLLE & CO., Ltd., A., Hebburn-on- Tyne, LINSTOW, F. N., Sunniside, Midhurst Road, Benton, and RITSON, T., 48, Laburnum Avenue, Wallsend, both in Northumberland. Feb. 2, 1932, No. 3124. [Class 123 (i).] The height of the water in an electric water heater is regulated by an outlet arrangement consisting of a casing M provided with a helical slot M<1> and an inner sleeve N provided with a straight slot N<1>, an outlet P being provided from the interior of the members. Rotation of the sleeve N by an electric motor J<1> or by a handwheel regulates the height at which liquid can pass through the ports M<1>, N<1> and reach the outlet P.
Patent GB-775914-A (GB)
Title: Woven materials for the production of cleaning cloths or the like, such as mops, polishing cloths, scouring cloths, dish cloths and the like
IPC: D03D1/00
Filed: 1955-02-02
Abstract: 775,914. Cleaning cloths. WALRAF, A., and WALRAF, L. [trading as WALRAF SOHNE, A.]. Feb. 2, 1955 [March 30, 1954], No. 3134/55. Class 142 (4). A fabric for mops, dishcloths and other cleaning cloths is woven from blended cotton and nylon, the warp containing 50 per cent. of nylon fibre and the weft 8 to 30 per cent.
Patent GB-706193-A (GB)
Title: Improvements in or relating to bonding vinyl resin sheet material
IPC: C09J7/22
Filed: 1951-02-09
Abstract: An adhesive comprises a butadiene-acrylonitrile copolymer and a resinous toughening agent such as vinyl chloride-acetate copolymer or chlorinated rubber or both.  The adhesive may consist of (a) butadiene-acrylonitrile copolymer, vinyl chloride-acetate copolymer, toluene, and methyl-isobutyl ketone, or (b) butadiene-acrylonitrile copolymer, chlorinated rubber, vinyl chloride-acetate copolymer, clay, silica gel, mineral oil, and cyclohexanone.ALSO:An adhesive comprises a butadiene-acrylonitrile copolymer, chlorinated rubber, and, if desired, vinyl chloride-acetate copolymer.  Fillers such as clay and silica gel, and a solvent such as a mixture of mineral oil and cyclohexanone may be added.
Patent GB-265008-A (GB)
Title: An improved portable footway for use on swampy or broken ground, and crossing water
IPC: E01D15/14
Filed: 1926-02-04
Abstract: 265,008. Ferry, J. H. Feb 4, 1926. Roads and ways, arrangements of.-A portable footway for use on broken ground or in crossing water is constructed with sections comprising cross-bars attached to shoes or floats and supporting bearers for a platform, the sections carrying side members for connecting them together in alignment. Fig. 1 shows cross-bars a supporting bearers f with scarfed ends for connection to adjacent sections. The ends of the cross-bars are fitted with irons d, d<1>, Fig. 4, and are connected by bolts b to shoes c or to cork floats. Longitudinal T-irons e, extending along the sections, rest on the irons d<1> and are secured by pins d<2> projecting from the iron d. A hand-rail may be provided by securing uprights on the extending screwed ends of the pins d<2> and passing a rope through eyes at the upper ends thereof. When floats are employed, these are kept in alignment with the section by staples embracing the T-iron and driven into the float, or by inserting fitting blocks between two floats. A run of sections may be stiffened by extending the bolts b below and passing a doubled rope through eyes at the ends thereof, so that bracing may be effected by twisting the doubled rope.
Patent GB-142565-A (GB)
Title: A combined bag and crate
IPC: B65D37/00
Filed: 1919-02-10
Abstract: 142,565. Behr, A. Feb. 10, 1919. Bags.-A collapsible receptacle with a reinforced bottom consists of a square canvas or like bag 1, Figs. 1 and 2, provided with strengthening- battens 3, 5, 6, which are connected with one another only by the material of the bag. The battens may be arranged in loops of the fabric, or may be riveted to the outside of the bag. The bottom 12 is reinforced by a hinged frame comprising rods 9 connected by a rod 10. The receptacle has four closing-flaps 13 strengthened by battens 14 and provided with eyes 15 enabling the opposite pairs of flaps to be laced together. In a modification, the bottom 12, Figs. 7 and 8, is strengthened by diagonally-disposed rods 24, and the receptacle is closed by flaps 13, 27 and by a lid 28 reinforced by cross battens 29 and edge battens 31, 32.
Patent GB-1522359-A (GB)
Title: Purifying kallidinogenase
IPC: C12N9/64
Filed: 1975-12-05
Abstract: 1522359 Purifying Kallidinogenase (Kallikrein) SEIKAGAKU KOGYO CO Ltd 5 Dec 1975 3264/78 Divided out of 1522358 Heading C3H Kallidinogenase (Kallikrein) is purified by bringing an aqueous phase extract from the pancreas of a mammal into contact with a geltype weakly basic anion-exchange resin thereby causing the Kallidinogenase fraction to be adsorbed on the resin, and eluting the enzyme with an aqueous solution of an ammonium salt of a weak acid. Specified ammonium salts are the carbonate, bicarbonate, borate, mono- and di-hydrogen phosphate, phosphite, hypophosphite, formate, acetate, malate, citrate, lactate, oxalate, succinate, tartrate and valerate. Preferably adsorption on to the resin is effected between pH 4 and 8. The salt can be removed from the eluate by means of dialysis or ultrafiltration.
Patent GB-305220-A (GB)
Title: Improvements in or relating to transformable tables
IPC: A47B5/04
Filed: 1929-01-31
Abstract: 305,220. Klotz, L. H., and Klotz, G., (trading as Klotz, H. & G.). Feb. 3, 1928, [Convention date]. Invalids' tables and desks.-An invalid's table is fitted, in addition to the usual folding four legs, with other legs which enable it to be converted into a desk. Fig. 1 shows an underside view of a table comprising a top 1, four pivoted table legs 2, and two telescopic pivoted legs 3 on the rear side of the top. The top 1 has a recessed front edge leaving projections 5, which serve as elbow rests when the device is used as a table, and as feet when it is used as a desk, and is supported in an inclined position by them and by the legs 3. The legs 2 fold down at the sides of blocks 12, and the legs 3 fold down into recesses 11 in these blocks, and are there secured by spring catches. Similar catches are fitted to facilitate the adjustment of the length of the legs 3. The legs 2 are held in their extended position by slotted bars 15, each slot having a spring catch engaging with a stud in a bracket 19. The table is preferably completed by an angle-bar ledge 23, Fig. 9, secured by spring strips 24 on a rod 26, the ends of which slide in slots 27 in strengthening strips 29 under the table. By means of a step 31 the ledge may be set so that its effective height is reduced, and the table may be used as a writing-desk. Tappets 33, 34 may be swung over so as to keep the ledge in any of its positions. Straps 35 are fitted to retain books on the slope.
Patent GB-1436812-A (GB)
Title: Process for the production of a block copolymers
IPC: C08F297/00
Filed: 1974-01-24
Abstract: 1436812 3-Stage block copolymerization SUMITOMO CHEMICAL CO Ltd 24 Jan 1974 [24 Jan 1973] 03376/74 Heading C3P  Block copolymers comprising a central copolymer block of a conjugated diene (B) and an alkenylaromatic compound (A) and terminal blocks of the monomer (A) are obtained by (1) polymerizing monomer A in a hydrocarbon solvent and in the presence of an organo-monolithium compound, (2) adding further monomer A and monomer B and polymerizing in the presence of 0À02 to 2% of a polar organic compound and (3) adding further A and polymerizing therewith. Preferably the overall feed ratio of A : B is 95 : 5 to 60 : 4. The terminal blocks are non-elastomeric, the central block elastomeric. Examples refer to the preparation of styrene-b stryene-co-butadiene-bstyrene or styrene-b-styrene-co-isoprene-b-styrene block copolymers in benzene or cyclohexane using n-butyllithium, with addition of minor amounts of tetrahydrofuran in stage (2).
Patent GB-1026427-A (GB)
Title: Improvements in or relating to ironing boards
IPC: D06F81/10
Filed: 1964-01-27
Abstract: A method a manufacturing a reinforced plate member comprises the steps of plunging holes in said plate member so that the plunged out metal remains around the circumference of the holes, forming holes in two or more cross-plates placing the plate member and cross-plates in juxta-position so that the plunged out metal extends through the holes in the cross-plates and riveting the plate member and the cross-plates together by stamping the plunged out material against the side of the cross-plates remote from the plate member.
Patent GB-1368203-A (GB)
Title: Alpha-hydroxy-beta aminocarboxylic acids and their production  and use
IPC: B60P1/38
Filed: 1972-01-25
Abstract: 1368203 Alpha - hydroxy - beta - amino carboxylic acids BADISCHE ANILIN- & SODA-FABRIK AG 25 Jan 1972 [26 Jan 1971] 3417/72 Heading C2C The invention comprises alpha-hydroxybeta-amino carboxylic acids of the general formula in which R<SP>1</SP> and R<SP>2</SP> are identical or different and each denotes an unsubstituted or substituted aliphatic, cycloaliphatic hydrocarbon radical; provided that R<SP>1</SP> and/or R<SP>2</SP> are not methyl; and that R<SP>1</SP> is different from R<SP>2</SP> when R<SP>2</SP> denotes alkyl of 2 to 4 carbon atoms; R<SP>1</SP> may alternatively denote hydroxyl, hydrogen, or the radical  and may be prepared by hydrolysis of betacarbamyl-beta-hydroxy-ethyl amines or their quaternary ammonium salts thereof having the following formulµ Preferably final products and starting materials are those in whose formulµ R<SP>1</SP>, R<SP>2</SP> and R<SP>3</SP> may be identical or different and each denotes alkyl of two to twenty, particularly one to four, carbon atoms (R<SP>1</SP> and/or R<SP>2</SP> do not denote methyl and R<SP>1</SP> is not the same as R<SP>2</SP> when R<SP>2</SP> denotes alkyl or two to four carbon atoms), alkenyl having two to twenty, particularly two to four, carbon atoms, cycloalkyl or cycloalkenyl of five to six carbon atoms, aralkyl or aralkenyl of 7 to 12 and 8 to 12 carbon atoms respectively, R<SP>4</SP> denotes hydrogen, methylol or alkoxymethyl of two to six carbon atoms and X<SP>(-)</SP> is the part corresponding to a negative charge of the anion of an inorganic or organic acid, R<SP>3</SP> may also be hydrogen, and R<SP>1</SP> may also denote a hydroxyl group, a hydrogen atom, an alkylol group of one to four carbon atoms of the radical and/or R<SP>2</SP> may also each denote the radical or the radical R<SP>1</SP> may also denote the radical for R<SP>2</SP> or denotes alkylol or alkoxymethyl of up to six carbon atoms, R<SP>6</SP> denotes alkylene of two to twelve carbon atoms and n denotes zero or an integer, preferably zero or 1. The said radicals may also contain, as substituents, groups which are inert under the reaction conditions, for example hydroxy, alkoxy of one to four carbon atoms, or carboxyl.
Patent GB-289968-A (GB)
Title: Process for the manufacture of non-thickening paints and lacquers
IPC: C09D191/00
Filed: 1927-02-07
Abstract: 289,968. Carpmael, W., (I. G. Farbenindrustrie Akt.-Ges.). Feb. 7, 1927. Addition to 289,153. Preventing thickening in paints.-The invention of the parent Specification of adding a free fatty acid to lithopone and linseed oil is extended to cover adding a fatty acid to a pigment containing any zinc compound. The fatty acid may be linoleic, stearic, palmitic, oleic, or resinic acid or the like. The fatty acid may be already added to the pigment in the course of manufacture or to the binding agent or to the ground paste. The amount of free fatty acid added to the linseed oil may be 2-6 per cent. Other pigments instead of zinc white may be zinc yellow, cadmium yellow, containing zinc (cadmium lithopone), Rinmans green, cobalt violet, metal white (zinc sulphide), &c.
Patent GB-218944-A (GB)
Title: Method for the manufacturing of buttons
IPC: A44B1/02
Filed: 1924-02-11
Abstract: 218,944. Anft, P. Feb. 11. 1924. Buttons; materials for buttons. - Portland cement, calcite, and a colouring substance are mixed together in the dry state and moistened with an aqueous solution of sodium chloride or soap. The buttons are moulded from the plastic mass produced, and after removal from the mould are allowed to harden and then drilled and polished. The attachment holes may, alternatively, be stamped out when the buttons are moulded. Powder produced by grinding a hardened mass formed by the setting of a mixture of Portland cement, infusorial earth, and milk of lime, may he added to the dry mixture before moistening.