baber/WOPTO huggingface dataset:
Patent GB-1123909-A (GB)
Title: Ion-exchange materials
Inventor: KRESSMAN THEODORE ROGER ERNEST
IPC: C08J5/22
Filed: 1965-12-30
Abstract: An ion-exchange material consists of a loose fibrous mass, e.g cotton-wool or asbestos fibres, having an ion-exchange resin supported on and in the fibres produced by absorbing on to and into the fibres the constituents of the resin and then polymerizing the constituents in situ or by absorbing on to and into the fibres the constituents of a resin, polymerizing these constituents in situ to form the resin and introducing ion-exchange groups into or forming them in the resin.  The fibrous material may be treated with a mixture of styrene and divinyl benzene which are polymerized in situ in the presence of H2O2 or benzoyl peroxide and water, the resin formed then being modified to introduce cation- or anion-exchange groups by sulphonation or chloromethylation or amination. Alternatively the fibrous material may be impregnated with acrylic or methacrylic acid and a crosslinking agent and polymerization effected or with acrylonitrile or an acrylic ester e.g. ethyl and a crosslinking agent e.g. divinylbenzene, hydrolysis to form carboxyl groups being effected after polymerization.  The ion-exchange materials may be used as precoats on filters used in processes for the removal of impurities present in liquid in very small quantities.ALSO:An ion-exchange material consists of a loose fibrous mass, e.g cotton-wool or asbestos fibres, having an ion-exchange resin supported on and in the fibres.  The material may be produced by absorbing onto and into the fibres the constituents of the resin and then condensing or polymerising the constituents in situ or by absorbing onto and into the fibres the constituents of a resin, polymerising these constituents in situ to form the resin and introducing ion-exchange groups into or forming them in the resin. The fibrous material may be treated with a mixture of styrene and vinyl benzene which are polymerised in situ the resin formed then being modified to introduce cation-or anion-exchange groups by sulphonation or chloromethylation or amination. Alternatively the fibrous material may be impregnated with acrylic or methacrylic acid and a crosslinking agent and polymerisation effected or with acrylonitrile or an acrylic ester and a crosslinking agent, hydrolysis to form carboxyl groups being effected after polymerisation.  The resin may also be a condensation product of phenolsulphonic acid and formaldehyde, of a salt of phenolsulphonic acid, a phenol and formaldehyde or of guanidine, acetone and formaldehyde, the fibrous material being treated first with a solution of the phenolsulphonic acid, salt of phenolsulphonic acid and phenol or guanidine and acetone and then with a solution of the formaldehyde or a resin precondensate first being formed and applied to the fibrous material and the condensation completed by heating. The ion-exchange materials may be used as precoats on filters used in processes for the removal of impurities present in liquid in very small quantities.
Patent GB-301844-A (GB)
Title: Improvements in or relating to telephone systems
IPC: H04Q3/00
Filed: 1928-03-23
Abstract: 301,844. Associated Telephone & Telegraph Co. Aug. 13, 1927, [Convention date]. Divided on 295,572. Drawings to Specification. Charging batteries.-A tone-current and battery charging outfit for use in small telephone exchanges is operated solely by relays and comprises busy and ringing current arrangements.. Alternating or direct current supply may be used for feeding the outfit, which comprises a polarized relay adapted to cause the generation of alternating current for ringing purposes, and to convert A.C. to D.C. for battery charging when no connection exists. Each movement of the relay armature automatically reverses the current through the operating windings. Battery charging is automatically initiated on the termination of a connection, and terminates on the initiation of a call or when the battery is fully charged. The outfit described is identical with that disclosed in part of Specification 295,572. Specification 301,843 also is referred to.
Patent GB-522406-A (GB)
Title: Improvements in and relating to curtain pleating tape
IPC: D03D1/06
Filed: 1938-12-13
Abstract: 522,406. Curtain heading tapes. BYSON APPLIANCE CO., Ltd., and HARRISON, E. Dec. 13, 1938, No. 36274. [Class 52 (v)] A curtain tape a is woven with spacedapart loops b for hooks, and has draw-cords c threading through the main tape entirely behind the hook loops If the main tape is hollow, the cords may pass inside the web. The loops may be of a different weave or colour than the main tape. The main tape may be open behind the hook-loops, between the points where the cords are threaded.
Patent GB-1032940-A (GB)
Title: An encoder with non-linear quantization
IPC: H04B14/04
Filed: 1963-09-16
Abstract: 1,032,940. Transistor wave generating circuits. NIPPON ELECTRIC CO. Ltd. Sept. 16, 1963 [Sept. 17, 1962], No. 36340/63. Heading H3T. Also in Division G4] In a p.c.m. coder of the type in which the signal sample is compared with a reference voltage which varies non-linearly with time to provide non-linear quantization (see Division G1), the trailing edge of a pulse S causes a previously charged capacitor in a function generator to commence to discharge and the exponentially falling voltage provides the reference voltage. The function generator may comprise a CR circuit charged through a switching transistor operated by pulse S, Fig. 3 (a) (not shown). Alternatively, Fig. 3 (b), two switching elements 31a, 31b, which are PNP and NPN transistors respectively are used one or other of which is switched on in accordance with the polarity of the signal sample to charge the capacitor C. The characteristics of the CR circuit may be arranged to compensate for variation of the signal sample during its storage period. A double integrating circuit to provide a reference voltage varying as a quadratic function is also described, Fig. 5 (not shown).
Patent GB-878374-A (GB)
Title: Controlling molecular weight brittleness of polypropylene
IPC: C08F110/06
Filed: 1959-10-27
Abstract: Propylene is polymerized using as catalyst a reduced titanium halide and an aluminium alkyl compound, the ratio of alkyl compound to reduced halide being from 0,2 : 1-4 : 1, in the presence of hydrogen in proportions of from 15-700 parts per million based on the propylene.  The usual hydrocarbon solvents may be used.  Titanium trichloride containing cocrystallized aluminium chloride, together with aluminium triethyl, are the preferred catalyst components, although aluminium sesquichloride and aluminium trisobutyl are also specified.  A C1-C8 alkanol, preferably in combination with a chelating agent, e.g. acetylacetone, may be used to deactivate the catalyst, and this deactivation may be followed by washing with water, alcohol or acid.  A polypropylene of intrinsic viscosity 0,75-4,0 in tetralin at 125 DEG C. may be obtained.  Specification 810,023, 847,661 and 878,373 are referred to.
Patent GB-1464115-A (GB)
Title: Apparatus for cleaning a movable electrostatographic imaging surface
IPC: G03G21/00
Filed: 1974-08-19
Abstract: 1464115 Cleaning xerographic surfaces XEROX CORP 19 Aug 1974 [24 Aug 1973] 36392/74 Heading G2H In a cleaning system, of the kind in which a cleaning blade 16 is cyclically oscillated laterally of the normal direction of motion of the surface 12 of a rotating xerographic drum 14 between two substantially spaced apart translation end dwell positions of the blade 16 on the surface 12, the drive means for cyclic lateral oscillation of the blade includes means for automatically multiple slightly shifting the positions on the surface 12 of the two end dwell positions without stopping the blade motion between the end dwell positions. The drive means comprises a rotating multi-lobe cam 24 with a cam follower 28 connected by a pull rod 32 to the blade 16, the cam 22 having lobes of varying dimensions irregularly spaced from one another.
Patent GB-1140246-A (GB)
Title: A method of bonding two workpieces together
Inventor: NORMAN EDWARD GEORGE
IPC: F16B11/00
Filed: 1966-08-15
Abstract: 1,140,246. Seaming non-metallic sheet material. PRESSED STEEL FISHER Ltd. 25 July, 1967 [15 Aug., 1966], No. 36452/66. Heading B5K. [Also in Division B3] A method of bonding two workpieces 11, 12 together, e.g. in making a motor vehicle, comprises holding the workpieces in overlapping relationship, providing an apertured cavity 16 between adjacent surfaces of the workpieces, injecting hot-melt adhesive through the aperture 13 to fill the cavity, and allowing the adhesive to cool. Metal or mouldable plastics may be bonded using polyethylene vinyl acetate copolymer resin, nylon-phenolic compositions or polyamides. The cavity 16 may be formed by deforming a portion of one of the workpieces, a protruding or retracted nipple 15 also being formed to facilitate injection of the adhesive by a nozzle 17. The nozzle is fed with molten adhesive at 200-300 C. from a lagged reservoir having a thermostatically controlled electrical heater and a powered stirrer, the reservoir being pressurized with nitrogen gas to feed the adhesive through a lagged pipe heated electrically. A piston 19 of the injector may be operated pneumatically, or the adhesive may be pumped mechanically and controlled by a timer. Alternatively, the adhesive may be dispensed from a hand-gun using cartridges of adhesive. In a modification, Fig. 2 (not shown), a hole (22) is formed in one of the workpieces to receive a metal stamping or a synthetic plastics moulding (23) providing the adhesive cavity, the edge (27) of the stamping or moulding overlapping the perforated workpiece. Adhesive cavities may be formed in thick workpieces by machining or moulding.
Patent GB-1099302-A (GB)
Title: High temperature electrical insulating material
Inventor: EARL JOHN ALFRED
IPC: H01B3/02
Filed: 1966-08-15
Abstract: An insulating ceramic material comprises 20 -30% CaO and/or BaO, 20-32% TiO2 and/or CeO2, 20-32% SiO2 and 3-7% Al2O3 and/or La2O3, by weight. Optional ingredients are MgO in amount 5-7% by weight, B2O3 in amount 7-14% and cobalt oxide in amount 0.5-5%.  The constituent oxides, or salts which will decompose thereto with heat, are mixed, smelted at about 1260 DEG  C., quenched to form particles which are mixed with a binder such as a polyvinyl resin or stearic acid, pressed into beads, and heated to about 800 DEG  C. to drive off the binder.
Patent GB-449181-A (GB)
Title: Improvements in and relating to the manufacture and production of artificial filaments, threads and the like
IPC: D01D5/20
Filed: 1934-12-21
Abstract: <PICT:0449181/IV/1> Filaments, threads, and the like of varying denier are made by moving the spinning nozzle in the line of the direction of the motion of the thread during spinning, towards and away from the means for drawing the thread.  Apparatus for working the process comprises spinning nozzles 3, mounted on a movable bar 17 carried by rollers 18.  By means of the extension 20 and 21, the roller 26, and the rotating toothed wheel 27, the bar 17 and nozzles 3 are moved away from the guides 7.  When the roller 26 rides over a tooth on the wheel 27 (as shown at 26<1>), the spring 25 causes the bar 17 and consequently the nozzles 3 to return either to their original position (with the roller at 26<11>) or to an intermediate position (as shown) depending on the disposition of the teeth on the wheel 27.
Patent GB-524142-A (GB)
Title: Improvements in and relating to a process for the manufacture of silica gel
IPC: C01B33/154
Filed: 1938-12-17
Abstract: 524,142. Silica gel. ANGLO-IRANIAN OIL CO., Ltd., DARE, H. F., and MILLIEN, A. Dec. 17, 1938, No. 36779. [Class 1 (ii)] In the manufacture of silica gel by interaction of a soluble silicate and an acid, the gel after setting is partly dried for the removal of between 40 and 60 per cent. of its moisture content, and is then washed, after which the drying is completed. Specification 315,675, [Class 1 (ii)], is referred to.
Patent GB-927019-A (GB)
Title: Vat dyestuffs of the dibenzanthrone series and process for their manufacture
IPC: C09B3/30
Filed: 1961-10-13
Abstract: The invention comprises dibenzanthrone and isodibenzanthrone vat dyestuffs which are free from acid groups imparting solubility in water and contain at least one sulphonamide group directly attached to the dibenzanthrone or isodibenzanthrone nucleus via the -SO2- group and which is derived from a secondary amine. The dyes are made by condensing a dibenzanthrone or isodibenzanthrone sulphonic acid halide with a secondary amine. Amines specified are dimethylamine, monomethylaminoethanol, diethanolamine, di-b -hydroxypropylamine, N-methyl-aniline, N-ethylaniline and amines of the formula <FORM:0927019/IV(a)/1> where X is a direct bond or an oxygen or sulphur atom or is -SO2-, -N(CH3)-, -CH2- or -CH2(CH3)-.  The dyes dye and print cellulose fibres in blue to violet shades.
Patent GB-971551-A (GB)
Title: Treatment of poisoned silica catalysts
IPC: B01J21/20
Filed: 1960-10-27
Abstract: Silica or clay, containing Ni or V as poisoning metal and possibly also Fe, is treated to remove the contaminants by contact at up to 1000 DEG  F. with an anhydrous chlorinating agent and subsequently contacting with a liquid aqueous medium. Preferably, when V is present, the silica or clay is first contacted with O2-containing gas to remove carbonaceous deposits and to convert the V to higher valency states.  Prior to chlorination, the poisoning metal may be sulphides by contact with e.g. H2S.  The chlorinating agent may be (a) Cl2, (b) a vaporizable chlorine compound of carbon or sulphur, or (c) a mixture of (a) and/or HCl with (b); when (b) is a carbon compound it may be made in situ from Cl2 and a hydrocarbon. Component (b) may be, e.g., CCl4, S2Cl2 or SCl2. Example XIII describes treatment of a proprietary acid-activated montmorilloxide with (i) air at 1000 DEG  F., (ii) H2S at 1050 DEG  F., (iii) Cl2/CCl4 at 600 DEG  F. and thereafter washing, to reduce its content of Ni, V and Fe.ALSO:Silica catalysts containing Ni or V as poisoning metal and possibly Fe, are treated to remove the contaminants by contact at up to 1000  DEG F. with an anhydrous chlorinating agent and subsequently contacting with a liquid aqueous medium.  Preferably, when V is present, the catalyst is first regenerated with O2-containing gas at at least 1000  DEG F. to remove carbonaceous deposits and to convert the V to higher valency states.  Prior to chlorination, the poisoning metal may be sulphided by contact with, e.g., H2S.  The chlorinating agent may be (a) Cl2, (b) a vaporizable chlorine compound of carbon or sulphur or (c) a mixture of (a) and/or HCl with (b); when (b) is a carbon compound it may be made in situ from Cl2 and a hydrocarbon. Component (b) may be, e.g., CCl4, S2Cl2 or SCl2.  Specified catalysts are silica-alumina optionally containing also a kaolinite, halloysite or an activated clay; silica-zirconia; silica-alumina-zirconia; acid-activated montmorillonite.  U.S.A. Specifications 2,481,253, 2,488,718, 2,488,744, 2,668,798 and 2,693,455 are referred to.
Patent GB-1094363-A (GB)
Title: Improvements in or relating to seats
Inventor: SEWARD WILLIAM HENRY
IPC: B60N2/70
Filed: 1963-09-19
Abstract: 1,094,363. Seats. IRVING AIR CHUTE OF GREAT BRITAIN Ltd. Sept. 16, 1964 [Sept. 19, 1963], No. 36940/63. Headings A4J and A4M. A vehicle seat includes a bottom and/or back comprising transverse, U-shaped cradle which supports a cushion and which is supported from the sides of a frame member, resilient stiffening means forming the bottom of or positioned within the cradle and serving to maintain the U-shape such that under load the resilient means bows to draw the sides of the cradle inwardly whereby the cushion and occupant are gripped. In one embodiment (Fig. 1), a seat bottom comprises nylon straps 4 forming the cradle and suspended from a U-frame 2 pivoted about a forward horizontal axis 3, the straps 4 supporting a resilient panel 8, e.g. of polyethylene, metal or wood, on which is seated a foamed or sponge cushion 7, e.g. of polyurethane. The supporting straps 4 are independently adjustable in length by screws 6, or alternatively are simultaneously adjustable by means of a windlass (not shown). A pin mounted on L-section side frames 1 of the seat engages a rear hole 9 in the seat bottom frame 2 to locate the seat bottom in its selected, pivoted position. The seat back 10 is of similar construction to the bottom and pivotably adjustable about a horizontal axis 11 at its lower edge. In another embodiment (Fig. 4), the seat bottom 32 has a cushion 41 with a recessed centre portion seated on a resilient panel 4 supported by nylon straps 39 suspended from a rectangular frame 35, 36, 37. The sides of the frame 35, 36, 37 carry lugs 43 engaged in slots 44 (Fig. 6) in the inner walls of doubled walled L-shaped seat frames 20 at both the front and rear and bosses 45 are carried by the ends of the studs 43 for manually positioning the lugs 43 along the slots 44 to adjust the seat position. The lugs 43 are retained in selected position by either seating on the bottom of the slots 44 or by engagement in notches 52 in a spring loaded 50, pivoted 48, catch plate 47 having a knob 49 for manual manipulation. Thus the seat base 32 may be pivoted about any of three horizontal axes at both front and rear to provide any one of nine seat positions.' Safety straps 25, 27 are fitted. The cushion 7 or 41 may be formed of a succession of foam or sponge layers of varying stiffness with the bottom, stiffest layer forming the resilient, stiffening means. The stiffening means may have an increased stiffness in its central region which may be bicycle saddle shaped. The seat is adjustably mounted along rails 31.
Patent GB-787608-A (GB)
Title: Improvements in crystallization procedure and apparatus
IPC: C07C7/14
Filed: 1955-12-29
Abstract: In a process for fractional crystallization wherein a crystal mass is introduced into a purification zone and moved to a heated portion of the zone so that a first portion of resulting melt is caused to be displaced counter-currently through at least a portion of the crystal mass, a mother liquor stream being removed from the system and a second portion of the melt being removed from the system as product, the temperature differential existing between the crystals introduced to the purification zone and the mother liquor removed from the purification zone is determined, and the rate of product removal is increased when the temperature <PICT:0787608/III/1> differential reaches a predetermined maximum value and decreased when the temperature differential reaches a predetermined minimum value.  A mixture of material is cooled to crystallize at least a portion of the constituent to be separated, and the slurry is filtered to remove some of the mother liquor.  The crystal mass containing some mother liquor is fed by a conveyer 12 (Fig. 1) to a purification column 11, where a piston 14 compacts the crystal mass and forces the compacted mass towards a heater 15, mother liquor being removed by a filter 16 and a line 17.  The heater 15 melts the crystals, a portion of the melt being displaced counter-currently through the crystal mass to displace occluded impurities from the mass approaching the heater 15, and substantially pure molten product is removed by a line 18.  The temperature of the feed to the column 11 is determined by an element 21, such as a thermocouple, and the temperature of the mother liquor leaving the column by line 17 is determined by another element 22. Elements 21 and 22 are connected to a temperature controller 24 which controls a valve 23 in line 18. Controller 24 is adjusted to maintain the temperature of the mother liquor in line 17 within a predetermined range higher than the temperature of the feed, by opening valve 23 when the temperature in line 17 rises above the predetermined range so that product is removed at a higher rate and so reduces the temperature in line 17, and by closing valve 23 when the temperature in line 17 falls below the predetermined range so reducing the rate of product removal and thus reducing the removal of heat from the column.  By controlling the temperature differential between the mother liquor in line 17 and the feed, the effectiveness of the washing action of the counter-currently-flowing melt is controlled.  When the temperature of the feed is constant element 21 may be omitted.  In an example, para-xylene is separated from a mixture containing ortho-, meta- and para-xylenes, ethylbenzene and toluene.  A list of compounds which may be separated from mixtures containing them, is given.
Patent GB-1369993-A (GB)
Title: Piston pump
IPC: F04B53/10
Filed: 1971-11-09
Abstract: 1369993 Reciprocating pumps G J GREENE JNR 9 Nov 1971 [7 Dec 1970] 37241/71 Heading F1A In a piston pump, the suction and discharge check valves 44, 46 are in a cartridge 26 removably mounted in a transverse bore 28 in the pump cylinder 12 between the suction and discharge connections 32, 34 and the pumping chamber 24. The cartridge is located by a flange 36 and secured by a nut 40. Communication between connections 32, 34 and chamber 24 is via annular grooves 64, 66, 68 and passages in the cartridge, sealing rings 70 to 76 being provided.
Patent GB-1125765-A (GB)
Title: Mass spectrometer
Inventor: BOYD ROBERT LEWIS FULLARTON
IPC: H01J49/34
Filed: 1964-09-11
Abstract: 1,125,765. Mass spectrometers. NATIONAL RESEARCH DEVELOPMENT CORP. 13 Dec., 1965 [11 Sept., 1964], No. 37274/64. Heading H1D. A mass spectrometer in which there is an accelerating D.C. field between grids 1 and 2, a drift space between grids 2 and 3 and a retarding field between grid 3 and a collector electrode 4 has an R.F. field of variable frequency applied between grids 2 and 3 and operates on the principle that ions of a particular species are indicated by the frequency of an R.F. field applied over a predetermined distance in which they gain zero energy at all phases of entry of the ions into the field. Under this condition the rise of collector current with change of frequency in either direction from the frequency at which there is zero energy gain is sharp and the detection of ions of a particular species is predicated upon the minimizing of collector current for particular values of the R.F. field. The grids 1 to 3, intervening insulating washers 12 to 14 and the collector electrode 4 are disposed within a circular recess formed in an insulating plug 10. The insulating plug fits within a circular recess formed in a frusto-conical metal member 11 forming part of a casing 5 which is completed by a cover-plate 15.