baber/WOPTO huggingface dataset:
Patent GB-1204184-A (GB)
Title: Manufacture of trimetallitic anhydride
IPC: C07C51/56
Filed: 1967-09-19
Abstract: 1,204,184. Trimellitic acid and anhydride. STANDARD OIL CO. 19 Sept., 1967 [19 Sept., 1966], No. 42674/67. Heading C2C. A process for the recovery of trimellitic acid and/or anhydride from an oxidation effluent obtained by the liquid phase air oxidation of pseudocumene in the presence of a heavy metal catalyst, said effluent being at a temperature of 325-450 F. and a pressure of 170-410 p.s.i.g. and containing trimellitic acid and a solvent consisting of 91-72% by wt. acetic acid and 9-28% by wt. water, there being 177-336 part by wt. solvent per 100 parts by wt. trimellitic acid, comprises the steps of (1) cooling and depressurizing the oxidation effluent in a first crystallization zone operated at superatmospheric pressure to crystallize 5-30% by wt. of the trimellitic acid and to form a suspension of crystals; (2) introducing the suspension from (1) to a second crystallization zone operated at a subatmospheric pressure and a temperature such that additional trimellitic acid is crystallized; (3) separating the effluent from (2) into a mother liquor and a crystalline product; (4) washing the crystalline product with 95- 98% wt. cone. acetic acid; (5) combining the mother liquor from (3) with the wash liquor from (4); (6) stripping acetic acid and water from the combined liquors from (5); (7) recycling trimellitic acid and/or anhydride present in the stripper bottoms from (6) to the first or second crystallization zone; and (8) recovering the washed crystals from (4) optionally followed by conversion of the trimellitic acid content thereof to the anhydride. In a preferred embodiment step (1) is operated at 320-285 F. and 24-45 p.s.i.g.; step (2) at 120-140 F. and 75-115 mm. Hg absolute and in step (6) the amount of acetic acid and water stripped off is equivalent to the amount of acetic acid and water used in step (4) and 65-95% by wt. of the acetic acid and water of the mother liquor from (3). The stripping step (6) may be effected at 448-500 F. and 0-10 p.s.i.g. to convert the trimellitic acid in the combind liquors to the anhydride and the stripper bottoms are flashed at 420- 600 F. and 5-20 mm. Hg absolute to remove 80-85% by wt. of the anhydride formed during stripping (6) as an overhead vapour which is condensed and recycled to the first or second crystallization zones. The washed product recovered at (4) is converted to the intramolecular anhydride by feeding the crystals to a pool of molten trimellitic anhydride at 400-500 F and 200 mm. Hg absolute atmospheric pressure. Crude anhydride is withdrawn from this pool and, optionally after filtering flashed at 425-575 F. and 10-55 mm. Hg absolute. The vaporized anhydride is condensed to give a product of high purity. Acetic acid and water obtained as overhead vapours from the crystallization zones and from step (6) may be reconcentrated and used as solvent for the oxidation process, washing liquor for step (4) or fed to the crystallization to maintain a flowable suspension. The process is illustrated by examples and schematic flow diagrams (not shown).
Patent GB-1413910-A (GB)
Title: Shift register
IPC: H01F10/00
Filed: 1973-09-13
Abstract: 1413910 Magnetic storage arrangements TECSI (TECHNIQUES ET SYSTEMES INFORMATIQUES) 13 Sept 1973 [13 Sept 1972] 43144/73 Addition to 1342694 Heading H3B In the magnetic domain propagation shift register described in Specification 1,342,694, in which the domain path of lower coercivity in a thin film of higher coercivity has a boundary in the form of oppositely facing and relatively off-set groups of saw-teeth each terminated in a parallel division S0, Fig. 1, the acute angled leading boundary edge A0, E0 in the direction of propagation along the hard magnetic axis f2 has a non-linear slope between its extremities. The various forms of leading edge disclosed are shown in Figs. 2, 3 and 4.
Patent GB-1126902-A (GB)
Title: Improvements relating to hydraulic control systems
Inventor: FUELL FREDERICK JAMES
IPC: E21D23/26
Filed: 1964-10-22
Abstract: 1,126,902. Valves. FAIREY ENG. Ltd. 19 Oct., 1965 [22 Oct., 1964], No. 43190/64. Heading F2V. [Also in Divisions B3 and F1] A plurality of poppet valves 25A, 26A, 27A each has an associated rocker 32 pivotable to open the valve against the action of a return spring 37 when rollers 30 mounted on the end of piston rod 24 are moved into engagement therewith by pressurization of the full area side of its piston. The rollers 30 are mounted on a link 28 pivoted to the end of the piston rod 24 so that when the piston is returned by pressure fluid continuously supplied to the annular side of the piston the link pivots in a clock-wise direction and does not operate the valves. The rockers 32 are secured to shafts 33, Fig. 6 (not shown) having heads (40) accessible by opening a door (41) to allow a key to be inserted in recesses therein for manually operating the valves. To prevent actuation of the valves by the piston rod 24 during manual operation, a valve in the supply line to the piston may be closed by the opening movement of the door (41).
Patent GB-1274720-A (GB)
Title: Improvements relating to article handling equipment
Inventor: MAUDE STANLEY MORGAN
IPC: A21B3/18
Filed: 1969-08-30
Abstract: 1,274,720. Adjustable endless conveyers; guiding articles on conveyers. SPOONER FOOD MACHINERY ENG. CO. Ltd. 14 Aug., 1970 [30 Aug., 1969], No. 43261/69. Heading B8A. [Also in Division A2]  Pans (not shown) containing loaves of bread are transported by an endless conveyer 70 under a height-sensing feeler 102 which governs automatic adjustment of the height of a suction pick-up conveyer 74 by which the loaves are removed from the pans and transferred to a discharge conveyer 140. Before reaching the pickup conveyer the pans are centralized on the conveyer 70 by a pair of spring-biased guide arms (not shown) which are interconnected by linkage, a crossed belt drive, or a gear train so that they move together in opposite directions in a horizontal plane. Air blast nozzles (not shown) may be provided above a grid 142 to loosen the loaves in the pans, lifting of the loaves out of the pans being prevented by the grid. The pick-up conveyer, which is driven by a motor 88, comprises an endless perforated belt enclosing a suction chamber 76 and provided with a multiplicity of soft rubber suction cups in the form of bellows (not shown) for engagement with the loaves. Suction is generated by a fan 79 connected by a flexible conduit (not shown) with the suction chamber 76 and discharging through a silencer 82. A reversible electric motor 100 adjusts the height of the pick-up conveyer through reduction gearing 101, a screw jack 98 and vertically movable members 94 connected to the frame 89 of the conveyer. Upward or downward movement of the feeler 102 about a pivot 103 operates potentiometers in a pair of bridge circuits which, through comparators, amplifiers and relays, causes operation of the motor 100, a feedback chain 107 causing vertical adjustment of the mounting bracket for the feeler 102 so that balance in the bridge circuits is restored when the conveyer has been adjusted the requisite amount. The motor control circuit is is such that downward adjustment of the conveyer is performed more slowly than upward adjustment. In modifications, the motor 100 is controlled by a single comparator, amplifier and relay, the motor is of three-phase type and the different speeds for upward and downward adjustment are obtained by gear trains brought into operation by clutches, photo-electric cells are used for height detection, and an hydraulic or pneumatic jack is used instead of the motor 100 and screw jack.
Patent GB-965108-A (GB)
Title: Method and equipment for the manufacture of pressed boards in one operation in a heat press and provided with a coating on at least one face
IPC: B27N3/08
Filed: 1961-12-05
Abstract: <PICT:0965108/C3/1> A method for manufacturing pressed boards having a coating on at least one side, in a single operation in a heat press, comprises scattering, on separate coating sheets, wood particles which have been coated with thermosetting binder, conveying these preformed blanks to an open press using the coating sheets as supports for the transfer of the blanks and for the loading of the press, and unifying in the press to form compact boards.  Suitable coating sheets are paper, veneer, synthetic resin sheets or sheets impregnated with unhardened synthetic resin, stratified plastics, textiles and other fabrics. They are preferably sprayed with a binder solution before the formation of the blanks, e.g. aqueous urea-formaldehyde solution, preferably containing high quantities of water.  In the apparatus described, paper from roll 12 is gripped by one of a number of pincers 17 and cut by the device 13 into a sheet 9 as soon as the pincer has been moved a predetermined amount by chain 14. When the pincer with sheet 9 is at a specified point in front of the press, the chain conveyer is stopped and the distributer 11 is moved to and fro to spread the particles 10 on the sheet. The coated sheet is then drawn into the open press 5 and 6 while simultaneously another sheet is brought under the distributer 11. The coated sheet 9 and 10 is hot pressed by heated plates 8 and 9. Before inserting into the press, another coating sheet may be placed on the upper face of the blank. Modifications include a multi-tier press; the spreading of the particles on to the paper before cutting; air cushions between the support and the loaded sheet; raised patterns on the board by disposing apertures on the lower press table; and an intervening layer of fine material such as wood-dust between the coating sheet and the blank.
Patent GB-1205566-A (GB)
Title: Light sensitive compositions
Inventor: PRZEZDZIECKI WOJCIECH MARIA
IPC: G03F7/033
Filed: 1966-09-29
Abstract: 1,205,566. Photographic materials. KODAK Ltd. Sept.29, 1967 [Sept.29, 1966], No.43580/66. Heading G2C. A photographic material contains an azide which does not have acid groups, a polymer with amide groups and an acid which is an aromatic or unsaturated aliphatic or alicyclic carboxylic or  sulphonic acid e.g. phthalic acid, 5 -norbonene 2, 3-dicarboxylic acid and hexachloro-5 [2: 2: 1]- bicycloheptene 2-3-di carboxylic acid. In the examples, a solution of methoxymethyl nylon, an azide, an acid such as ethyl-N-acryloyl glycine or cis-4-cyclohexane-1, 2-dicarboxylic acid and optionally a thiapyrylium sensitizer is coated on a support and imagewise exposed. If the material is developed with alkali, the exposed areas are removed to produce a positive plate whereas development with an organic solvent for the nylon produces a negative plate. A copolymer of methyl acrylate and N-acrylryl-N'-butyl-glycinamide may be used instead of methoxymethyl nylon. If a positive image is produced, the remaining photo-sensitive areas may be imagewise exposed and developed with ethanol to produce a second negative image.
Patent GB-1164389-A (GB)
Title: Improvements in or relating to Method of, and Apparatus for Dyeing Fabrics
IPC: D06B3/20
Filed: 1967-09-25
Abstract: 1,164,389. Dyeing apparatus. TAKENI SENKA K.K. and NIHON SENSHOKU KIKAI K.K. 25 Sept., 1967 [26 Sept., 1966], No. 43594/67. Heading D1L. Apparatus for dyeing a fabric C in rope or extended form comprises, disposed in a dye vessel, a chamber 10 having an inlet 12 and an outlet 13, both constricted so as to conform substantially with the cross sectional configuration of the fabric to be dyed, and cross sectional variations 14, 15, 16 between ,the inlet and outlet whereby the flow of a dye liquor passing through the chamber is rendered turbulent, the apparatus further comprising a mechanical driving mechanism for propelling the fabric through the chamber and a liquid dye supply means for passing dye through the chamber. The portions 14, 15 may be surrounded by dye reservoirs connected to a recirculating pump, the dye passing through slits or perforations in the periphery of the portions 14, 15. More than one constricted portion 16 may be present.
Patent GB-919145-A (GB)
Title: Three-way slide valve with adjustable overlap
IPC: F16K11/078
Filed: 1960-12-20
Abstract: 919,145. Valves. CITROEN S.A., ANDRE. Dec. 20, 1960 [Dec. 22, 1959], No. 43704/60. Class 135. A three-way axially-movable slide valve 2 with adjustable overlap comprises a valve body 1 having a bore into which three ports 3, 4, 5 open, the port 5 being a working port, the ports 3, 4 being pressure and exhaust ports respectively, a slide-valve 2 mounted in the bore and axially movable and angularly adjustable therein, the valve having a passage means 6 with boundaries defining relative distances from said pressure and exhaust ports that vary with the angular adjustment of the valve in the body, the passageway means being in constant communication with the working port and slidable axially to communicate with one of the other two ports. As shown in Fig. 3, the passageway means 6 is formed by a groove having inclined edges so that upon rotation of the valve 2, the overlap is varied. In the modification shown in Fig. 6, a diametral hole 6 is formed in the valve and is arranged to cooperate with inclined ports 3, 4. In a further modification the bore 6 in the valve is connected by an annular groove which co-operates with bores as in Fig. 3, the overlap then being equal to a function of the angle of rotation of the slide valve. The slide valve is locked in the desired angular setting by suitable means,
Patent GB-1483768-A (GB)
Title: Dc to dc converter
IPC: H02M3/338
Filed: 1974-10-10
Abstract: 1483768 D.C.-D.C. converters TELEFONAKTIEBOLAGET L M ERICSSON 10 Oct 1974 [17 Oct 1973] 44030/74 Heading H2F [Also in Division H3] A D.C.-D.C. converter comprises an oscillator T1, T2, Tr having two supply input terminals U1, U2 and arranged so that its output comprises half cycles of one polarity proportional to U1 and half cycles of the other polarity proportional to U2. Separate rectifiers (not shown) are provided for the respective half cycles so that the resulting D.C. outputs can be controlled independently of one another. As described each half cycle is terminated by core saturation. In Fig. 6 (not shown) a positively directed diode and a negative directed diode are connected to U3 giving a pair of D.C. outputs respectively proportional to U1 and U2. Fig. 7 and 8 (not shown) relate to a pair of diodes respectively connected to the two ends of a centre-tapped secondary winding. In Fig. 9 (not shown) a diode connected to U3 provides a positive D.C. output and a diode pump connected to U3 provides a positive output of greater voltage. Automatic voltage control.-Fig. 5 (not shown) depicts a block diagram of a pair of voltage regulators arranged to control the respective D.C. output voltages by variation of the supply voltages U1 or U2.
Patent GB-1284292-A (GB)
Title: Polypropylene film
Inventor: KOWALSKI RONALD CHARLES
IPC: C08K5/13
Filed: 1969-09-05
Abstract: 1284292 Polypropylene film ESSO RESEARCH & ENG CO 5 Sept 1969 [7 Oct 1968] 44088/69 Heading C3P Films having improved impact strength are made from compositions comprising a propylene polymer, 0À05 to 0À30 weight per cent of a phenolic antioxidant, 0À08 to 0À20 weight per cent of a slip agent and 0À05 to 0À15 weight of an antiblock agent, the polymer having a defined shear stress and swell. The polymer may be a homopolymer or copolymer of propylene with another α-olefin. The phenolic antioxidant may be phenol, cresol, 2,6-di-t-butyl cresol, 2,2<SP>1</SP>- methylene bis-(4-methyl-6-t-butylphenol), 4,4<SP>1</SP>- thio bis-(3-methyl-6-t-butylphenol), 4,41-methylene bis-(2,6-di-t-butylphenol) or α-2<SP>1</SP>,α-6<SP>1</SP>-bis- (3-t-butyl-5-methyl-2-hydroxyphenyl) mesitol. The slip agent may be stearamide, oleamide or erucamide. The antiblock may be diatomaceous earth.
Patent GB-1367503-A (GB)
Title: Filters
IPC: B01D25/176
Filed: 1971-09-22
Abstract: 1367503 Filter presses SEITZ-ASBESTWERKE THEO & GEO SEITZ 22 Sept 1971 [23 Sept 1970] 44113/71 Heading BID As shown filter layers 14 which alternate with frames 13 are releasably supported by means of, e.g. end beads 21 which slide within co-operating channels 20 of frame fixtures 22. Two fixtures may be provided on alternate frames. The fixtures may alternatively be suspended from one or more overhead carriers. The layers may be alternatively supported by hooks, studs engageable in loops or holes. The frames 14 have eyes 17 connected by seals 16 so that liquid can be fed to the frames from pipe 11. The beads 21 have two flanges 24, (only one indicated), which are fastened by clips, rivets, glueing, sewing or stitching to the layers 14.
Patent GB-1269201-A (GB)
Title: Dock for sorting containers unloaded from a ship
Inventor: WALDA FEDDE
IPC: B65G63/00
Filed: 1969-03-30
Abstract: 1,269,201. Container traffic. F. WALDA. 30 March, 1969, No. 44542/67. Heading B8Q. A dock container handling installation has a quay 20 for unloading large ships 10 by bridges 9 and loading stations for transport means for forwarding the containers to their final destinations with interposed storage and sorting installations. The loading stations comprise platforms, 21, 22 for road transport, 23a, 23b for local sea transport and 23c for main line rail transport provided on a ring 24. The handling of the containers which have foldable wheels is controlled by a centre 17. Containers unloaded from a ship 10 initially pass on main rails 12 to a buffer storage area 11 and then on further main rails 14 to a first sorting area 13 where they pass under the control of the centre 17 to vertical sections 18 according to the country of destination as indicated by a plate on the containers. From the sections 18 the containers pass on secondary transverse rails 15 to storage sheds 19 according to the destination, country and transport to be used for forwarding and finally on tertiary transverse rails to the loading stations 23a-23c or on to stations 21, 22 provided with endless belt loading devices to move the containers on to road vehicles.
Patent GB-1493347-A (GB)
Title: Aggregate
IPC: C04B20/04
Filed: 1974-12-23
Abstract: 1493347 Synthetic aggregate formed from clay SHERWEN ENG CO Ltd 23 Dec 1974 [26 Sept 1973] 45095/73 Headings ClA and ClH A synthetic aggregate is formed by sintering shaped particles of finely divided clay (term defined), the aggregate having a density of not less than 60 lbs/cu.ft. dry loose weight and in which the aggregate particles have (i) a polished stone value of not less than 50, (ii) an aggregate impact value of not more than 35, (iii) an aggregate abrasion value of not more than 20, and (iv) a mean water absorption value of not more than 5. The clay, defined as a clay material suitable for brickmaking and may contain sand, iron oxide, CaCO, and other impurities, may include clay shales (e.g. Accrington shale) Gault, Weald or London clay. The shaped particles may be in the size range 3/32 in to 3/4 inch, produced by extrusion and/or briquetting, preferably having the surfaces roughened, e.g. by sand facing or by indentations formed during briquetting prior to firing. Alternatively, the aggregate may be provided with a smooth surface by vitrifying the surface during heat treatment in a kiln (e.g. a Wright kiln). Typically, a smooth Weald clay dense aggregate may be made by heating from ambient to 500‹ C. over 14 mins, and then from 500‹ to 950‹ C. during a further 14 mins., followed by a 10 min. dwell at 1150‹ C. The aggregate may then be rapidly cooled. The colour of the aggregate may be varied by inclusion of suitable additives (e.g. metal oxides) in the starting materials, or by using appropriate temperature condition in an oxidizing or reducing atmosphere. Other clay additives, i.e. carbonaceous material to produce a fuel, SiO 2  or Al 2 O 3 , are also described. The aggregate, preferably of differing shapes and/or sizes, may be used in the manufacture of prefabricated concrete beams, slabs, columns or blocks.
Patent GB-1005210-A (GB)
Title: Improvements in and relating to purification of sodium carbonate-containing compounds
Inventor: FRINT WILLIAM RAMON
IPC: C01D7/22
Filed: 1961-12-19
Abstract: Organic-free dense soda ash is produced from a sodium carbonate-containing compound obtained from solutions of crude trona by calcining said sodium carbonate-containing compound in a non-reactive atmosphere at a temperature from 400 DEG  to 800 DEG  C. for a time sufficient to volatilize a major proportion of the organic impurities therefrom and to convert the majority of the remaining organic impurities to coke.  The sodium carbonate-containing compound may be sodium sesquicarbonate, sodium bicarbonate, sodium carbonate monohydrate or light soda ash.  The temperature of calcining is preferably 450 DEG  to 550 DEG  C. and the time taken is preferably at least 10 minutes, say 10 to 60 minutes.  Fig. 1 illustrates an embodiment of the invention in which crude trona is dissolved at 10 in a recycling mother liquor containing substantially more carbonate than bicarbonate, the solution is clarified in 12 and fed through tank 15, where a crystallization modifier may be added, to a series of crystallizers, 16a, 16b and 16c, where crystallization of sodium sesquicarbonate is effected by cooling and/or evaporation.  This sesquicarbonate, containing organic impurities, is either calcined at a high temperature in calcizer 39 to yield organic-free dense ash or alternatively first calcined at 200 DEG  to 300 DEG  C. in calciner 36 to yield an impure light ash, prior to calcination at 450 DEG  to 800 DEG  C. in calciner 39.  The latter calciner may be of conventional type, e.g. a rotating drum kiln or a stationary or fluidized bed.  Results obtained at (a) various temperatures and (b) various calciner atmospheres (air, N2, steam and flue gas) with various sodium carbonate-containing compounds are given. <PICT:1005210/C1/1>
Patent GB-1455926-A (GB)
Title: Inflator adaptor
IPC: F16K15/20
Filed: 1974-10-22
Abstract: 1455926 Cleaning by blowing BLACK & DECKER Mfg CO 22 Oct 1974 [23 Oct 1973]  45619/74 Heading A4F [Also in Divisions A6 B7 and F2]  A device for connection to a pressurized source of air for cleaning purposes has fluid-flow communication between inlet 14 and outlet 18 openings and is characterized in that the inlet opening is further communicated with a bleed opening 16 and that inuse, fluid-flow between input and output may be regulated by the manual throttling of the bleed opening via a resilient flap 37. The body 12 of the device which is preferably formed of a one piece plastics moulding provides the required flow communication via first 22 and second 19, 20 passages tapered as shown. A threaded boss 15 at the inlet 14 provides coupling means for a pressurized air source, and the outlet 18 is adapted via a screw threaded socket 25 to engage one of a number of nozzles (not shown).
Patent GB-1204069-A (GB)
Title: Improvements in or relating to the supply of pulverised fuel to boilers
Inventor: MARSLAND NOEL ROY
IPC: F16K3/02
Filed: 1968-05-16
Abstract: 1,204,069. Pulverulent fuel fin furnaces. C.B.P. ENG. & CONSTRUCTION Ltd. 1 April, 1969 [16 May, 1968; 26 Sept., 1968], Nos. 23462/68 and 45757/68. Heading F4B. Pulverulent fuel is fed to a boiler furnace through a number of apertures in the boiler shell, each of which has an isolating valve so that the pipe line supplying air and fuel may be repaired without danger of blow back. The valves may be two-part sliding valves operated by bevel gearing or pneumatically or hydraulically.