baber/WOPTO huggingface dataset:
Patent GB-1429266-A (GB)
Title: Coulometric titrators
IPC: G01N27/44
Filed: 1973-05-10
Abstract: 1429266 Electro-chemical analysis ITT INDUSTRIES Inc 10 May 1973 [17 May 1972] 22289/73 Heading G1N A coulometric titrator including sensor 22, reference 21 and generator 20 electrodes includes a control circuit, having a pair of opposite conducting type transistors 64, 71, inter-connecting the sensor and reference electrodes to the generator electrode. A rectified and smoothed voltage is applied to terminals 29, 47, and wiper 54 of potentiometer 52 is adjusted until transistors 64, 71 are operating just above cut-off. The gas being monitored is fed via a range expander to bubble into the electrolyte of the titrator cell past electrodes 20, 21, 22 in order. When sensor electrode 22 senses the gas, e.g. SO 2 , being monitored transistor 64 is turned further on and its pulsed output after smoothing by low pass filter 93 is applied to the base of transistor 71 so that the resulting increase of collector current is applied via indicator 82 to the generator electrode 20 which generates a reagent. When the reagent is detected by sensor electrode 22 the base potential of transistor 64 returns to its normal value with the transistor just operating above cut-off and the current supplied to the generator electrode is cut off again. Switches 56 and 86 may be gauged together to act as a range switch.
Patent GB-1202495-A (GB)
Title: Bactericidal and detergent compositions
Inventor: KEANE WILLIAM
IPC: C11D7/16
Filed: 1968-05-10
Abstract: 1,202,495. Bactericidal/detergent compositions. IMPERIAL CHEMICAL INDUSTRIES Ltd. 5 March, 1969 [10 May, 1968], No. 22327/ 68. Heading A5E. [Also in. Division C5] A bactericidal and detergent composition, in powder or granular form, comprises in admixture (a) a water-soluble polymeric diguanide or salt thereof in which the recurring unit is represented by the formula: wherein X and Y are bridging groups which together supply a total number of carbon atoms directly interposed between adjacent nitrogen atoms which number is greater than 9 and less than 7, and b) a water-soluble alkali metal polyphosphate. A preferred polymeric diguanide is polyhexamethylene diguanide which may be used as the hydrochloride salt. Examples of suitable water-soluble alkali metal polyphosphates are Na 4 P 2 O 7 , Na 6 P 6 O 18  and Na 5 P 3 O 10 . If the polymeric diguanide is used in the form of an aqueous solution it is necessary to incorporate a suitable absorbent filler into the composition, e.g. MgCO 3  optionally in combination with Na 2 CO 3 , NaHCO 3  or NaHCO 3 . Na 2 CO 3 . The composition may also contain non-ionic surface active agents, particularly those obtained 'by condensing alkyl phenols with propylene oxide and ethylene oxide and benzyl ethers of ethoxylated alkyl phenols. Optional ingredients specified are sodium metasilicate, sodium disilicate, carboxymethyl cellulose, optical brightening agents, sodium perborate and anti-foaming agents. The composition was effective at 1% by weight concentration in water.
Patent GB-1430294-A (GB)
Title: Electrolytic apparatus and methods
IPC: C25B9/19
Filed: 1973-05-10
Abstract: 1430294 Electrolytic cell MEAD CORP 10 May 1973 [11 May 1972] 22443/73 Heading C7B In an electrolytic cell, e.g. for production of chlorate, chlor-alkali, pure oxygen, or conversion of alkali metal ferrocyanide to ferricyanide, sodium sulphide to polysulphide and alkali, sodium thiosulphate to sulphate, gas produced at one of the electrodes is received in a static bed of (activated) carbon or platinized compound particles (as catalyst) wetproofed against the aqueous electrolyte e.g. with PTFE doped with Ag, and reacted by oxidation-reduction reaction with a second gas brought into contact with the catalyst to produce an electro-chemically non-interfering product. As shown, for oxidizing K 4 Fe(CN) 6  to K 3 Fe(CN) 6  to regenerate a photographic ferricyanide silver bleach containing NaBr, the cell comprises an anode chamber 21 with carbon anode 23 separated by cation exchange membrane 34 from a cathode chamber 30 filled with the catalyst 40 and containing tubular carbon cathode 35 with diffuser 36 in centre for introducing oxidizing gas e.g. air or oxygen; spent bleach forms the catholyte and used bleach solution is introduced via inlet 24 as anolyte, oxidized solution leaving via outlet 26. Hydrogen produced at the cathode e.g. of Ta reacts with the introduced oxygen to form water.
Patent GB-815140-A (GB)
Title: Improvements in or relating to esters of metaboric acid
IPC: C07F5/04
Filed: 1957-07-16
Abstract: The invention comprises esters of metaboric acid of the formula <FORM:0815140/IV (b)/1> in which R is an alkyl radical containing 2 or more carbon atoms, preferably 2 to 12 carbon atoms.  The novel compounds may be prepared from a dialkyl chloroboronate by heating, preferably at from 150 DEG  to 250 DEG  C. for 2 to 10 hours and at superatmospheric pressure if required, or by addition of a Lewis acid catalyst, such as ferric chloride or aluminium chloride, preferably in an amount of 0.1 to 10 per cent by weight based on the dialkyl chloroboronate.  The esters of metaboric acid may also be prepared by heating an alkyl orthoborate with boron trioxide, preferably in the molar ratio 1 : 1 or with a slight excess of boron trioxide.  The heating is suitably effected at a temperature greater than 100 DEG C., preferably in the range 150 DEG  to 250 DEG  C., and the reaction may be effected at superatmospheric pressure.  In examples: (1) ethyl orthoborate and boron trioxide are heated at 250 DEG  C. for 10 hours in a sealed glass tube to give ethyl metaborate; (2) diethyl chloroboronate is heated at 250 DEG  C. for 10 hours in a sealed tube to give ethyl metaborate; (3) isopropyl orthoborate and boron trioxide are heated for 3 hours under reflux to give iso-propyl metaborate; (4) iso-propyl metaborate is obtained by heating di-iso-propyl chloroboronate at 200 DEG  C. for 5 hours; (5) n-propyl metaborate is obtained from n-propyl orthoborate and boron trioxide as in (3); (6) n-propyl metaborate is obtained from di-n-propyl chloroboronate by the procedure of (2); (7) n-butyl orthoborate and boron trioxide are heated at 240 DEG  C. for 8 hours to give n-butyl metaborate; (8) n-butyl metaborate is obtained from di-n-butyl chloroboronate by the procedure of (2); (9) di-n-butyl chloroboronate is treated with anhydrous ferric chloride to give n-butyl metaborate; (10) iso-butyl metaborate is obtained from isobutyl orthoborate and boron trioxide by the procedure of (7); (11) isobutyl metaborate is obtained from di-isobutyl chloroboronate by the procedure of (2); (12) sec-butyl metaborate is obtained from sec-butyl orthoborate and boron trioxide as in (7); (13) sec-butyl metaborate is obtained from di-sec-butyl chloroboronate and aluminium chloride by the procedure of (9).
Patent GB-402544-A (GB)
Title: Improvements in retting process of textile materials
IPC: D01C1/04
Filed: 1933-03-07
Abstract: 402,544. Retting. PERCIVAL, S., 40, Chancery Lane, London.-(Fibres Textiles Soc. Anon. ; 2, Rue Docteur Elie Lambotte, Schaerbeek, Brussels.) March 7, 1933, No. 22497/32. [A Specification was laid open to inspection under Sect. 91 of the Acts, Aug. 22, 1932.] [Class 120 (i).] Plants are retted by immersing them in water, the temperature of which is never allowed to exceed 35‹ C., and to which there is added a soluble agent comprising saponified oils or fatty acids, soluble carbonates or chlorides, and hyposulphites or hypochlorites or oxides of the Na2O type. The oil or fatty acid used are preferably those derived from the seeds of the plant to be treated, e.g. in the case of flax, linseed oil is used. The total amount of reagents added preferably do not exceed 2 per cent of the weight of the fibres being retted. In an example, medium quality flax is immersed in water at 28‹ C., the aforesaid soluble agent being added on the third day and the flax removed on the fourth day.
Patent GB-996141-A (GB)
Title: Improvements in or relating to a filter assembly for a smoking tobacco product and method of making the same and smoking tobacco product including the filter assembly
Inventor: ESTENLE JOHN GILBERT
IPC: A24D3/14
Filed: 1964-06-01
Abstract: 996,141. Tobacco smoke filters. BRITISH-AMERICAN TOBACCO CO. Ltd. June 1, 1964, No. 22547/64. Heading A2C. A cigarette filter tip 30 is made by applying to absorbent material 9 a layer 11 of a water soluble polysaccharide material having a flavouring additive absorbed therein. The flavouring material may be menthal, eugenol anisaldehyde, piperonal, and the polysaccharide material may be gum arabic, locust bean gum, guar gum, gum karaya, galactomannan gum, lactose, maltose, agar or the water soluble salts of carboxymethyl cellulose, carboxyethyl cellulose and carboxymethylhydroxy cellulose. The combination of the water soluble polysaccharide and the flavouring additive is prepared by first dissolving in a solvent, e.g. ethyl alcohol or triacetin , up to 5% by weight of the flavouring additive and then adding the polysaccharide material in a proportion up to 20% by weight of the total mixture. Quantitative examples are given.
Patent GB-1222548-A (GB)
Title: Method for preparing aqueous dispersions of ethylene copolymers
Inventor: HARMON THOMAS OTTO
IPC: C08J3/07
Filed: 1968-05-13
Abstract: 1,222,548. Dispersing ethylene copolymers in aqueous media. DOW CHEMICAL CO. 13 May, 1968, No. 22591/68. Headings C3G and C3P. A dispersion containing 10 to 30 weight per cent of an ethylene copolymer is prepared by dissolving a copolymer of monomers comprising at least 65% by weight of ethylene, an alpha, beta-ethylenically unsaturated carboxylic acid having from 3 to 8 carbon atoms, the acid being present in amount of at least 8% by weight when only ethylene and acid are present in the copolymer and when any other monomer polymerized therein is a non-polar monomer, the acid being present in amount of at least 5% by weight when another polar monomer is polymerized in the copolymer, at a concentration of 2 to 20% in a substantially water-miscible organic solvent which has a boiling point below 100 C. or forms an azeotropic mixture with water having a boiling point below 100 C., maintaining the solution at 2 to 5 C. below its boiling point and dispersing the solution in an aqueous liquid system heated to 5 to 10 C. above the boiling point of the solvent and containing an amount of an alkaline compound sufficient to neutralize at least 10% of the carboxylic acid units present in the copolymer, at such a rate that the volume of solvent distilled from the system is substantially equal to the volume of solvent being added to the system, thereby forming a dispersion of the polymer in the aqueous liquid system. Specified third monomers which may be present in the copolymer are propylene, styrene, ethyl acrylate and vinyl acetate. The alkaline compound may be a hydroxide or an amine. Suitable organic solvents include C 1  to C 4 -alkanols, ethers and ketones and heterocyclic amines e.g. pyridine. The copolymer may comprise polyethylene grafted with an unsaturated carboxylic acid. In the examples, an ethylene acrylic acid copolymer or ethylene-acrylic acid-ethyl acrylate terpolymer is dissolved in tetrahydrofuran or pyridine and dispersed in an aqueous medium containing KOH.
Patent GB-234690-A (GB)
Title: Note block holder
IPC: B42D5/00
Filed: 1924-09-25
Abstract: 234,690. Kull, A. Sept. 25, 1924. Clamping-devices.-A note-block holder for a number of interchangeable blocks arranged side by side comprises a transversely partitioned plate with its longer sides bent inwardly to form flanges 4, 6, within which the note blocks 5 are inserted, one flange being bent downwardly to act as a retaining spring bearing upon the upper faces of the blocks at 7. The plate may be made of either sheet metal or wood, and is shaped at its upper end to form a foot 2 which raises that end of the plate.
Patent GB-618535-A (GB)
Title: Improvements in frequency modulation reactance valve control circuits
IPC: H03C3/14
Filed: 1946-07-30
Abstract: 618,535. Frequency modulation. HASS, Z. K., and COOP, E. July 30, 1946, No. 22666. [Class 40 (v)] In a thermionic reactance frequency modulator, an auxiliary radio-frequency oscillator feeds the reactance valve, and an output at the auxiliary frequency, amplitude modulated in accordance with the mutual conductance of the valve, is rectified to provide a feedback voltage for the reactance valve to ensure substantially linear variation of frequency with modulating signal. The Figure shows a valve 1 connected as a reactance valve across the tuned circuit 2 of a radio-frequency oscillator and arranged to give a linear reactance/grid voltage characteristic. The modulating signal is applied to the grid of valve 1 through potentiometer 3 and R.F. choke 4, and through R.F. choke 8 to the grid of a linearising valve 5, which is matched to valve 1. An auxiliary oscillator 7 supplies a low amplitude, high-frequency voltage to the grid of valve 5, to give an output amplitude modulated in accordance with the variations in mutual conductance of the valve 5. This output, amplified at 9, is fed to a rectifier 10, and the control voltage obtained is passed through a low-pass filter 11, amplifier 12 and phase-shift network 13 to the grids of the valves 1, 5. In a further modification, Fig. 3 (not shown), an auxiliary oscillator feeds the grid of the reactor valve through a transformer, a similar transformer in the anode circuit serving to feed amplitude modulated oscillations at the frequency of the auxiliary oscillator to the feedback loop.
Patent GB-677437-A (GB)
Title: A new or improved appliance for salvaging damaged motor road vehicles
Inventor: WALTERS FREDERICK
IPC: B60P3/12
Filed: 1949-09-01
Abstract: 677,437. Road vehicles. HARVEY FROST & CO., Ltd. Aug. 28, 1950 [Sept. 1, 1949; March 2, 1950], Nos. 22727/49 and 5352/50. Class 108(i) A motor vehicle salvaging appliance particularly for use with vehicles having independent wheel suspension, comprises a wheeled carriage 1, Figs. 1, 5, adapted to be positioned below the raised vehicle and between a pair (e.g. the front pair) of vehicle wheels, the carriage having a wheel cradling unit 8 projecting beyond each end of the carriage for receiving two vehicle wheels and supporting them above the road surface so that the vehicle may be towed by a length adjustable draw bar 4. Upon the base frame 2 is provided a superstructure 6 of channel section girders having a turntable type of connection 7 with the frame. The cradle unit 8 is mounted upon the superstructure 6 and comprises beams 9, 10, extending at right angles across the superstructure and secured adjustably along it by clamping plates 11, 12. Cradle beams 14, 15, of channel section are fixed to the beams 9, 10, with their channels facing upwardly, and have portions 18, 19, which guide carrier bars 21-24 welded to U-shaped wheel bearers 26. The bearers are strapped together in pairs by bars 27, 28, and are adjustable in the guides 18. 19, to different wheel track widths. To retain the wheels in the bearers, chains 29, Fig. 5, are provided to engage over the wheels and fasten to S-shaped levers 35 and slots 30 in lugs 31. When the vehicle tyres are absent or deflated, one or more arcuate packing blocks 36 of aluminium, having locating lugs 37 are provided for introduction between the bars 28 and the respective wheel rims. A modification described in the first Provisional Specification has the superstructure 6 carrying four brackets upwardly and outwardly directed, forming the four corners of an inverted truncated pyramid, the upper ends of each bracket being provided with an axially bored boss, these bosses being arranged in pairs, horizontally to support circular cross section bars. The bars support the vehicle wheels between parallel spaced locating plates adjustable along the bars. and a pair of auxiliary adjustable cradles anchored by spring links to the main cradle are provided to engage the upper parts of the wheels. The brackets may be adjustable upon the carriage parallel to the axis of the wheels of the carriage, and the fore and aft spacing of the bars may also be adjusted. A modification described in the second Provisional Specification where U-shaped bearers are not provided, has the vehicle wheels resting directly on the parallel bars. The bars need not be longitudinally adjustable but means would preferably be provided for holding the wheels against movement along the bars.
Patent GB-790824-A (GB)
Title: Improvements in the compound di-(2,2,2-trifluoroethyl) acetal of acetaldehyde, process for producing the compound, and process for producing 2,2,2-trifluoroethyl vinyl ether
IPC: C03B5/04
Filed: 1956-07-23
Abstract: The invention comprises di-(2:2:2-trifluoroethyl) acetaldehyde acetal of the formula: <FORM:0790824/IV (b)/1> and a process of producing this by the reaction between acetylene or vinyl acetate with 2:2:2-trifluoroethanol in the presence of a mercury catalyst and an acid substance, also the process of dealcoholysis of the acetal by heating it with a dehydration catalyst, advantageously fluidized, according to the equation: <FORM:0790824/IV (b)/2> In examples are described the preparation of di-(2:2:2-trifluorethyl) acetaldehyde acetal by reaction between 2:2:3-trifluoroethanol and acetylene in presence of mercuric oxide and BF3/ether complex; and with vinyl acetate similarly; the decomposition of the acetal product to give 2:2:2-trifluorovinyl ether, by heating at 270 DEG  C. and over, passing upwardly through a fluidized bed of acid-activated clay catalyst of specified size, stationary pumice in a cracking tube at 340 DEG  C. and over, pumice coated with silver at 300 DEG  C. and over, Fe2O3 on pumice, at 320 DEG  C. and over, and platinized asbestos at 390 DEG  C.; many other catalysts are specified, generally of the "dehydration" type, acidic ones preferred, and carbonized catalysts may be used.
Patent GB-1049233-A (GB)
Title: Industrial trucks
Inventor: LANGFORD ALBERT
IPC: B66F9/12
Filed: 1964-06-02
Abstract: 1,049,233. Lift truck attachments. CONVEYANCER. FORK TRUCKS Ltd. June 2, 1965 [June 2, 1964], No. 22771/64. Heading B8H. A fork lift truck is provided with a structure which is secured either detachably or permanently, to the fork tines 13 and which comprises an operator's compartment 4 provided with a floor 6, an inwardly opening gate 8 and gates 2, 3 leading to the load compartment 5, surrounded by sides 14, 15 and a vertically sliding gate 18 and having a floor constituted by a pallet on the fork tines 13. The gate 18 is connected by ropes 19, 20, Fig. 2 (Provisional) (not shown), to a guide tube 30 secured to the lifting carriage, and a plunger 33, slidably mounted in the tube 30, is provided with pulleys 25, 29 engaging the ropes 19, 20 whereby when, on lowering of the lifting carriage, the plunger 33 engages a fixed abutment 34, further lowering of the lifting carriage causes the gate 18 to be raised. The gate 18 may be locked in the raised position to allow the fork arms 13 to pick up or deposit a pallet on a surface above ground level. In a modification (not shown), the tube 30 and plunger 33 form, or are associated with, an hydraulic jack whereby the gate 18 can be opened at an elevated position of the lifting carriage. Where the structure is detachably mounted on the lifting carriage, a latch mechanism, Figs. 3-6 (not shown), is provided for locking the structure to the lifting carriage when the gate 18 is closed.
Patent GB-280862-A (GB)
Title: Improvements in or relating to conductors of high negative temperature coefficient
IPC: H01B1/10
Filed: 1927-08-30
Abstract: 280,862. Andre, H. G. Nov. 17, 1926. [Convention date]. Resistance materials.-A resistance material of high negative co-efficient is made by melting silver with a metalloid, especially sulphur or phosphorus. The resistance may be protected by a layer or layers of cast sulphur. The terminals are of silver.
Patent GB-1508697-A (GB)
Title: Process for producing water soluble resins
IPC: C09D167/08
Filed: 1976-06-02
Abstract: 1508697 Water soluble resins R H RUSSELL 2 June 1976 [6 June 1975] 22788/76 Heading C3R A process for preparing a water soluble resin comprises (a) reacting a glyceride oil with maleic acid, maleic anhydride or fumaric acid and (b) polyesterifying the product of (a) with a polyol and phthalic anhydride or isophthalic acid until the product is clear and has an acid value of 55 to 80. Water-thinnable paints can be made incorporating the above resins, an amine base and conventional paint additives.
Patent GB-239880-A (GB)
Title: Improvements in or relating to wall coverings and method of producing the same
IPC: D21H21/52
Filed: 1925-09-12
Abstract: 239,880. Dodman, A. C. Sept. 13,1924, [Convention date]. Pulp, adding special substances to.-Wallpaper is decorated with aluminium flakes or finelydivided granular aluminium which is sprinkled on paper pulp while it is on the wire of a pa.permaking machine, so that the metal becomes embedded in the surface and in the mass. The flakes may have a thickness of one-fiftieth of an inch and a mean diameter of less than oneeighth of an inch.
Patent GB-1334022-A (GB)
Title: Process for continuously annealing steels
IPC: C21D9/56
Filed: 1971-04-19
Abstract: 1334022 Continuously annealing steel NIPPON KOKAN K K 19 April 1971 [17 Feb 1970] 22862/71 Heading C7A Steel containing #0À06% carbon, which has been slabbed, hot rolled and cold reduced is continuously annealed by a process comprising soaking at a temperature between the crystallization temperature and 800‹ C, cooling at a rate of >50‹C/sec to a temperature of not more than 500‹C and shelf treating at 300-500‹ C for at least 10 sec. The hot rolling step may involve coiling at a temperature above 630‹. The process is to improve ductility and such steel so treated is stated to have lower yield point and retarded aging; data are given. The process may be applied to any steel having #0À06% carbon, but examples are given containing small amounts of Mn, P, S, N and O.
Patent GB-334672-A (GB)
Title: Improvements relating to collapsible baby carriages
IPC: B62B7/10
Filed: 1929-07-25
Abstract: 334,672. Mertz, M. July 25, 1929. Folding vehicles.-In baby carriages of the kind in which the folding of the handle causes the arm rests and back to fold longitudinally and the wheels to fold transversely the back and arm supports are pivotally mounted on one end of the carriage while the handle is pivotally mounted at the other end. The wheel supports are secured to bars 15 rotatable about their longitudinal axes 14 and the bars 15 are provided at one point with a screw thread 17 of steep pitch which co-operates with a non-rotatable nut 18 when the handle is folded. The handle 4 is connected by rods 10 with the links 6 supporting the arm rests 5 and the back 3. The front links 6 are connected by links 8 with a transverse bar 19 formed at its ends into a nut 18 the longitudinal movement of which over that part 17 of the bar 15 which is twisted to form a screw thread causes the bar 15 to rotate about its axis 14 to fold the wheels transversely. The parts 17, 17<1> on the bars 15 are displaced to cause the wheels to fold one after the other. The back 3 is adjustable and the handle 4 is provided with a locking latch.
Patent GB-1224876-A (GB)
Title: Improvements in or relating to distillation and like towers
IPC: B01D3/32
Filed: 1967-05-17
Abstract: 1,224,876. Distillation and like columns. BRITISH HYDROCARBON CHEMICALS Ltd. and R. G. GROOM. 10 May, 1968 [17 May, 1967], No. 22913/67. Heading B1R. A deck of a distillation or like column comprises one or more sections such as 20 releasably clamped to an adjacent section or as shown to an annular supporting member 25 by means of a number of clamping devices, each comprising a bolt with a head 33 at one end and a latch 34 at the other rotatably mounted in a guide 32 secured to the underside of the section 20 and a spring 35 between the head 33 and the upper surface of the section 20, the latch 34 being rotatable into and out of securing engagement with the ring 25 by use of a tool acting on the head 33. A resilient gasket 37 may be interposed between ring 25 and the section 20 as shown.