baber/WOPTO huggingface dataset:
Patent GB-1093624-A (GB)
Title: Improvements in or relating to grinding machines
Inventor: JONES KENNETH ROY
IPC: B24B47/18
Filed: 1965-02-11
Abstract: 1,093,624. Grinding. LUKE & SPENCER Ltd. Dec. 10, 1965 [Feb. 11, 1965], No. 5886/65. Heading B3D. A grinding machine includes a grinding wheel, means actuable to drive the grinding wheel at a variable speed of rotation and means including a sensing wave beam to sense the diameter of the grinding wheel and to control the grinding wheel driving means in such a way that the speed of the grinding wheel is inversely proportional to the diameter of the grinding wheel, so maintaining the peripheral speed constant. A grinding wheel 11 is driven by a motor 19 through pulley 20, belt 21 and divided pulley 13, 14. The axial spacing of the pulley parts 13, 14 is varied by a shaft 15 driven by a chain 23 and connected through gearing 16, 17 to a screw 18 for moving the motor 19 to maintain the belt 21 taut. A slide 30 is movable towards and away from the grinding wheel 11 by a screw 26 driven through a chain 27 by a motor 29. In the slide 30 are sensors mounted in sound insulating blocks 31 carrying sonic probes 32 comprising nylon tubes terminating in opposed nozzles. The probes act as sound guides for an ultrasonic sound beam generated between the sensors. The probes may be enclosed in steel tubes. The beam is normally interrupted by the grinding wheel. When the grinding wheel wears the beam is uninterrupted and the motor 29 is energized to advance the slide 30 until the beam is again interrupted; simultaneously with the advance, the pulley 13, 14 is opened so as to increase the rotational speed of the grinding wheel and the motor 19 is adjusted to maintain the driving belt taut. When the grinding wheel reaches its discarding diameter trip mechanism 35 operates a reversing switch 36 energizing the motor 29 to retract the slide to a position allowing for the mounting of a new grinding wheel. At this position the trip mechanism 35 makes ready the advance movement of the slide 30 but no movement ensues because the beam is interrupted by a baffle plate 37 mounted on the wheel guard. When the new wheel has been fitted, the baffle plate 37 is moved so that the beam is uninterrupted and the slide 30 advances until the probes register with the wheel. If, due to a fault in the control circuit, the slide 30 advances while the beam is interrupted by the grinding wheel, a wire 38 is cut by the grinding wheel and a switch 39 snaps open to break the circuit to the motor 29, so preventing further motion.
Patent GB-588808-A (GB)
Title: A handle for saucepans and the like
IPC: A47J45/06
Filed: 1945-03-09
Abstract: 588,808. Handles of saucepans &c. LOUGHTON, A. J. March 9, 1945, No. 5888. [Class 66] The handle of a saucepan &c. A is made of a round, half-round, square, or flat wire or wires encircling the vessel within a beaded rim C and extended as a twisted hand-grip portion B.
Patent GB-785232-A (GB)
Title: Recovery of waste textile fibres
IPC: D04H1/58
Filed: 1955-02-28
Abstract: A process for the recovery of waste cellulosic textile fibres, which have previously been impregnated with a copolymer of vinyl chloride and methyl acrylate in which the vinyl chloride content is at least 70 per cent, consists in removing the copolymer by heating the waste textile at a temperature of 225-275 DEG  F. for 3-5 hours with an aqueous solution containing at least 2 per cent of a dissolved aliphatic alcohol or ketone and at least 1.75 per cent of an alkali metal hydroxide, the ratio of the weights of treating solution to textile being at least 7 : 1.  Any of the alcohols up to and including the butyl alcohols may be used, as may also iso-amyl, n-hexyl, and iso-octyl alcohols; suitable ketones are methyl ethyl ketone and methyl iso-butyl ketone. Dihydroxy alcohols such as ethylene and propylene glycols are also suitable.  Preferably, the mixture is circulated in a closed kier at a temperature of 240-260 DEG  F., the solution containing not more than 3 per cent of n-butyl or isopropyl alcohol and about 3 per cent of sodium or potassium hydroxide.  Under these conditions, the polymer may be removed by the solution in 3 hours, and the comparatively low temperature prevents any appreciable degradation of the cellulose.ALSO:A process for the recovery of waste cellulosic textile fibres, which have previously been impregnated with a copolymer of vinyl chloride and methyl acrylate in which the vinyl chloride content is at least 70 per cent, comprises removing the copolymer by heating the waste textile at a temperature of 225-275 DEG  F. for 3-5 hours with an aqueous solution containing at least 2 per cent of a dissolved aliphatic alcohol or ketone and at least 1.75 per cent of an alkali metal hydroxide, the ratio of the weights of treating solution to textile being at least 7 : 1.  Any of the alcohols up to and including the butyl alcohols may be used, as may also isoamyl, n-hexyl, and iso-octyl alcohols; suitable ketones are methyl ethyl ketone and methyl iso-butyl ketone. Dihydroxy alcohols such as ethylene and propylene glycols are also suitable.  Preferably, the mixture is circulated in a closed kier at a temperature of 240-260 DEG  F., the solution containing not more than 3 per cent of n-butyl or iso-propyl alcohol and about 3 per cent of sodium or potassium hydroxide.  Under these conditions the polymer may be removed by dissolution in 3 hours, and the comparatively low temperature prevents any appreciable degradation of the cellulose.
Patent GB-248559-A (GB)
Title: Improvements in and relating to fine adjustment devices for electrical instruments
IPC: H03J1/14
Filed: 1925-03-04
Abstract: 248,559. Taylor, A. R. March 4, 1925. Wireless tuning-apparatus, adjustment devices for. - An extension handle E for facilitating fine adjustment of the knob A, of a variable condenser, variometer, coilholder, &c., is pivoted at F to a U-shape member D, which is rotatably mounted upon the knob A. Coarse adjustment is effected by turning the knob in the usual manner, while fine adjustment is obtained by pressing on the handle E, against the action of a spring S, so that a part H frictionally engages the knob A, whereupon the knob is constrained to rotate with the handle E. In a modification, the handle is provided with a bifurcated end which embraces and is pivoted to a disc rotatably mounted on the knob A.
Patent GB-124305-A (GB)
Title: An Improved Instrument Resembling a Clock for Measuring Short Specific Intervals of Time.
Inventor: STEVEN ALEXANDER MACFARLANE
IPC: G04F3/02
Filed: 1918-04-09
Abstract: 124,305. Steven, A. M. April 9, 1918. Alarms; short-time movements.-Consists of a movement to run, say, five minutes and then sound a bell. Fig. 3 is a view of the mechanism from the rear. The centre-arbor carrying the hand is friction-tight in the centre-wheels v, and a toothed quadrant o gears with a pinion fast thereon. By means of a pusher 10, the quadrant is turned against the force of a coiled spring p till the hand has been reversed round the dial and a pin 13 on the quadrant has passed behind the hammer-lever j. On releasing the pusher, the quadrant drives the movement, and when the quadrant reaches its initial position, the hammerlever escapes from the pin 13 and the hammer k strikes the gong.
Patent GB-1049272-A (GB)
Title: Improvements in or relating to swimming or bathing pools
Inventor: TROWER RICHARD HECTOR FRANK
IPC: E04H4/00
Filed: 1965-02-11
Abstract: 1,049,272. Bathing pools. DRIX PRODUCTS Ltd. Feb. 11, 1965, No. 6008/65. Heading A4N. A collapsible bathing pool includes a length of wire mesh 12, a strip 14 of semirigid sheet material and a polythene or polyvinyl chloride liner 10. The wire mesh is formed into a circular enclosure and secured to the ground by pegs 22, while the overlapping ends 24, 26 are wired together. The liner 10 and strip 14, which protects the liner from abrasion, are nested within the enclosure to form the bath which is completed by placing a split tubular hand rail around the upper rim. A layer of green polythene may be interposed between strip 14 and mesh 12. The liner 10 may be in the form of a single sheet having pleats 11 or a circular disc may be provided with a circumferentially welded up-standing wall portion.
Patent GB-1403792-A (GB)
Title: Metal extraction process
IPC: C22B3/32
Filed: 1972-02-09
Abstract: 1403792 Metals extraction IMPERIAL CHEMICAL INDUSTRIES Ltd 24 Jan 1973 [9 Feb 1972] 6049/72 Heading C1A Metals, values particularly Cu, Co, Fe or Ni are extracted from aqueous solution by treating with a solution, in an organic solvent of a ligand which is a 2-hydroxyphenylketoxime or salicylaldoxime or substituted derivative thereof, and which forms a complex with the metal and extracting the complex in the organic solvent, wherein the concentration of ligand and solvent are such that the ligand is completely soluble in the organic solvent whereas the complex is not completely soluble but any undissolved complex remains associated with the solvent in the form of a suspension. The solvent is preferably a hydrocarbon or halogenated hydrocarbon. Long chain alcohols or surface active agents may also be present. The extracted metal may be recovered from the organic extractant by means of sulphuric acid.
Patent GB-1346155-A (GB)
Title: Confection and method of manufacture
IPC: A23G3/40
Filed: 1972-02-09
Abstract: 1346155 Confections FOREMOST-MCKESSON Inc 9 Feb 1972 [23 Feb 1971] 6135/72 Heading A2B A confection comprising sugar, fat, partially delactosed and partially demineralised whey solids, water, and a water-soluble caseinate, the whey solids having an ash content of 0.9-6.5 wt. %, the amount of whey solids comprising at least 25 wt. % of the sugar content, and the amount of soluble caseinate comprising at least 15 wt. % of the sugar content, may be prepared by cooking a mix of the ingredients on a gradually increasing temperature gradient corresponding with the increasing boiling point of the mix as it becomes more concentrated, cooling the mix from the boil out temperature, forming into masses of the desired size and form, and cooling to solidify.
Patent GB-871904-A (GB)
Title: Improvements in or relating to pipe or hose couplings
IPC: F16L37/34
Filed: 1959-02-23
Abstract: 871,904. Pipe couplings. AEROQUIP A.G. Feb. 23, 1959 [April 28, 1958], No. 6208/59. Class 99(1). In a self-sealing pipe or hose coupling comprising engageable coupling members 10, 12 within which are located sealing valves 30, 48 respectively, a further valve 58, 60 mounted in the member 12 and adopted to close the latter to fluid flow, is positioned so as to be intermediate the valves 30, 48 when the members 10, 12 are coupled together. All the valves are spring biased so as to be urged to their closed positions and the arrangement is such that, on coupling engagement of the members 10, 12 the valve 58, 60 is operationally engaged with the valves 30, 48 and opening of the valve 48 occurs, followed by opening of the valves 10 and 58, 60. As shown, the member 10 has mounted therein a spider 26 in which the valve 30 is axially supported and is provided at one end with an annular inner flange 14 and at the other end with a hose adapter 28 screwed therein. The member 12 is similarly provided with a flange 38 and with an adapter 44 within which is affixed a spider 46 for supporting the valve 48. The intermediate valve is mounted within a sleeve 54 screwed into the member 12 and consists of a spring loaded disc-like, ported valve plate 58 and a check valve 60 slidable relative to each other and to the sleeve 54, the shank 66 of the valve 60 extending through an axial hole in the plate 58, and being screwed into a spring-loaded cap 68 which rests within a recess formed in the valve 48. The sleeve 54 is formed with an inner flange 56 provided with a resilient ring which sealingly contacts the member 10 when the members are coupled. The members 10, 12 are coupled by a nut 72 rotatably journalled on and axially fixed to the member 10 and adapted to screw on the sleeve 54, the nut 72 being manually rotatable by a spring biased knurled ring 76 rotatively secured thereto and axially slidable thereon. After screwing on the sleeve 54 the nut is locked in position by a peripheral hexagonal key abutment 80 on the sleeve 54 engaging a complementary recess 82 in the ring 76. Operation. When the members 10, 12 are uncoupled the valves 30, 48 sealingly engage the flanges 14, 38 respectively and the valve 60 and the plate 58 abut each other and seal the cavity between the valve 48 and the flange 56. As the members 10, 12 are moved towards each other upon coupling, the flange 14 engages the valve plate 58 and the valve 30 abuts the head 64 of the valve 60. Further relative axial movement causes the cap 68 to unseat the valve 48 and move the latter into engagement with the spider 46 whereupon movement of the valves 48, 60 will cease and at the end of the coupling operation the valve plate 58 will have been moved further to the right and the valve 30 unseated from the flange 14 whence fluid communication between the members 10, 12 is established. Specification 832,705 is referred to.
Patent GB-916567-A (GB)
Title: Improvements in or relating to the treatment of cellulosic material
IPC: B01J19/08
Filed: 1961-02-20
Abstract: Cellulosic material, preferably with moisture content at least 20%, is treated with ionising radiation in the substantial absence of oxygen, e.g. on an inert gas or in a vacuum, thereby inducing cross-linking without the need for the heating step required in Specification 895,479.  Cellulosic material includes yarns, fibres, threads and fabrics derived wholly or partly from natural cellulose, e.g. cotton; regenerated cellulose, e.g. viscose rayon, cellulose derivatives, e.g. cellulose acetate, regenerated cellulose film and paper.  Preferred forms of radiation are g - b - and X-rays or dosages of 5 X 104 to 3 X 106 rads.  Prior to irradiation, the material may be topochemically modified by treatment with compounds such as acrylic, methacrylic, crotonic and cinnamic acids, allyl derivatives, acrylonitrile, ethylene imine compounds, or p-isopropylbenzoyl chloride, which promote formation of active groups.  The cellulosic material may also be protected against undue degradation during irradiation by treatment with e.g. phenols, cystine, cysteine and methanesulphonyl chloride.  Examples describe the irradiation of cotton poplin fabric with g -rays.  The tensile strength and resistance to abrasion and creasing is improved.
Patent GB-746035-A (GB)
Title: Improvements in and relating to travelling conveyor ovens
Inventor: WARRINGTON JAMES IRVINE DUDLEY
IPC: A21B1/08
Filed: 1953-03-06
Abstract: 746,035. Bakers' ovens. BAKER PERKINS, Ltd. March 5, 1954 [March 6, 1953], No. 6241/53. Class 51(2). In a baking oven of the travelling conveyer type, steam escaping from the entrance to the baking chamber is returned to the baking, chamber at a suitable point or points through a recirculation system. The invention is shown applied to a baking oven with a conveyer 4 Fig. 1, in which a hood 2 extending over the width of the entrance 1 collects steam escaping from the oven chamber 3. A fan 9 draws the steam through a duct 7 and returns it to the oven chamber 3 through damper controlled nozzles 13 in a recirculation duct 12. In a modification Fig. 3, part of the steam may be diverted to a waste pipe 17 under control of a damper 18. This embodiment may have a by-pass duct 20 controlled by a valve 21 whereby oven atmosphere may be extracted through the duct 12, this latter provision not forming part of the invention.
Patent GB-628255-A (GB)
Title: Process for the production of melamine
Filed: 1946-02-28
Abstract: Melamine is produced by heating to 275-550 DEG  C., preferably 385-450 DEG  C. in the absence of added ammonia, and at a pressure of 200-1000 atmos., urea, ammeline, ammelide, cyanuric acid or the melamine-cyanuric reaction product present in the by-product of heating urea under pressure, or urea-forming substances, e.g. ammonium cyanate or carbamate.  Diluent gases such as carbon dioxide, nitrogen or nitrogen-hydrogen may be present.  Molten urea may be conducted through a tube preferably at about 500 atmos. and 400 DEG C.  Contact times may range from 3 1/2 minutes or less to 40 minutes or more.  The results of experiments at various temperatures, pressures, and contact times in the absence of added ammonia, and with addition of ammonia or carbon dioxide are given.  Melamine may be isolated by injecting into the hot reaction product, water or mother liquid under high pressure, as described in Specification 628,250, and crystallizing. Reactors of the internally braced cartridge type comprising, for example, a silver cartridge where pressure is balanced by injecting a liquid between it and an exterior steel shell, may be used.  The preheated urea may be passed through the reactor, the product treated with recycled mother liquor, filtered, the filtrate passed to a flash evaporator to separate ammonia, carbon dioxide, and some water which is treated first with ammonium nitrate solution, then with water to remove ammonia which is recovered, as is carbon dioxide.  The liquid from the evaporator is crystallized.  Stabilizers such as caffeine may be used in heating the urea as described in U.S.A. Specification 2,346,425. Pressure and temperature may be varied along the reactor. Specifications 583,504 and 598,175 also are referred to.  Reference has been directed by the Comptroller to Specification 598,175.
Patent GB-772488-A (GB)
Title: Means for dispensing liquids on a surface to be cleaned
IPC: A47L21/00
Filed: 1954-03-04
Abstract: 772,488. Reservoir pads. DEEMING, A. G. Feb. 21, 1955 [March 4, 1954], No. 6307/54. Class 19 A liquid applicator comprises a pad of porous material fixed in a holder mounted on a container, the holder comprising a ring which engages the outside of the neck of the container and through which the pad passes into the neck of the. container, the ring or an extension thereof being provided with an inturned flange which engages a groove in the pad. In Fig. 1 the ring screws on to the neck of the container and the face of the pad extends beyond the edge of the ring, while in Figs. 2 and 3 the ring carries a channel shaped extension 7 and the pad extends through the open side of the channel and beyond the end. The pad may be formed of porous rubber or plastic sponge or materials such as nylon fabric or fine glass fabric containing a porous filler such as felt or absorbent cotton wool.
Patent GB-544301-A (GB)
Title: Apparatus and method for the dressing of welding electrodes
IPC: B23K11/30
Filed: 1941-05-16
Abstract: 544,301. Trimming welding electrodes. BUDD MANUFACTURING CO., E. G. May 16, 1941, No. 6322. Convention date, June 25, 1940. [Classes 83 (ii) and 83 (iii)] The ends of welding-electrodes 10, 12 are trimmed to part-spherical form by means of a reciprocating abrading-element such as a file 38 of concave section guided in a jig 21 which is further provided with pairs of guide holes 26, 28, 30 adapted to receive electrodes of different sizes. The direction of file reciprocation is gradually turned in a plane perpendicular to the electrodes to produce spherical surfaces on the work which preferably have a radius of from 1 to 2¢ inches. The jig may consist of hardened grooved plates connected by rivets 44 or the edges of the file may be dulled so that they do not wear away the jig. In some cases, particularly where they are of different sizes, the electrodes may be trimmed separately.
Patent GB-176376-A (GB)
Title: Process and means for the maximum utilisation of a variable or intermittent source of motive power
IPC: F01D17/00
Filed: 1922-03-03
Abstract: 176,376. Soc. Rateau. March 4, 1921, [Convention date]. Systems depending on the use of two or more machines. - An electric supply system comprises an asynchronous generator the motive power of which is variable or intermittent and which is arranged to run as a motor when the motive power falls below a predetermined value. The energy may be supplied by any kind of furnace, oy gas-engine exhaust, hot-water circulation systems, &c. A boiler a supplies a turbine c driving an asynchronous generator d, and the supply pipe f contains a valve e adapted to close when the steam pressure falls below a predetermined value. A speed-regulating device g shuts off the supply of steam when the speed attains a given value. The boiler a may be replaced by an accumulator of low-pressure steam or by a collector feeding hot-gas engines.
Patent GB-772110-A (GB)
Title: Unsaturated polyfluorinated organic compounds
IPC: C07C17/363
Filed: 1952-09-03
Abstract: The invention comprises carboxylic acids of the formula RFCH=CHCOOH where RF is a polyhalogenohydrocarbon group having at least two fluorine atoms on the carbon atom nearest the olefinic bond.  RF may be perfluoroalkyl, preferably C1-C20 perfluoroalkyl, perfluorocycloalkyl, preferably having not more than six carbon atoms in the ring, or perfluoro - aromatic, preferably a perfluorophenyl group.  The acids may be prepared by hydrolysing a nitrile of formula RFCH = CHCN (described in Specification 772,109) in the presence of a base.  The acids may also be prepared by adding a compound of formula RFI to acrylonitrile to obtain a compound of formula RFCH2CHICN, which is then dehydroiodinated and hydrolysed, e.g. with alcoholic potassium hydroxide, to obtain the acid.  Metal salts of the acids, such as sodium salts, may be decarboxylated, e.g. by heating with ethylene glycol and boric acid, in a solvent from which hydrogen can be abstracted, such as water or a solvent having a C-H, O-H or N-H bond, to obtain olefins of formula RFCH = CH2.  The silver salts of the acids may be simultaneously decarboxylated and iodinated to obtain compounds of formula RFCH = CHI.  In examples: (1) g ,g ,g -trifluoroacrylonitrile is hydrolysed to form g ,g ,g -trifluorocrotonic acid; (2) acrylonitrile is reacted with trifluoroiodomethane to obtain g ,g ,g -trifluoro-a -iodobutyronitrile, which is dehydroiodinated and hydrolysed to obtain g ,g ,g -trifluorocrotonic acid; (3) the sodium salt of trifluorocrotonic acid is decarboxylated to obtain 3,3,3-trifluoropropene; (4) the silver salt of trifluorocrotonic acid is iodinated and decarboxylated to obtain 3,3,3-trifluoro-1-iodopropene.