baber/WOPTO huggingface dataset:
Patent GB-1045607-A (GB)
Title: Process for upgrading rock phosphate
Inventor: HERMAN ELKAN RONALD
IPC: C05B11/02
Filed: 1964-06-08
Abstract: Calcitic rock phosphate is upgraded by first calcining to remove at least 80% of the CO2 present, slaking and treating the slaked calcine with a dilute aqueous solution of an ammonium salt of a concentration not > 80 g.l. or slurry of CaCO3 in such a solution to dissolve all or the major part of the residual free CaO or Ca(OH)2. The resultant slurry is carbonated (before or after removal of the upgraded phosphate) to precipitate dissolved Ca++ ions as CaCO3 and recycled. The concentration of ammonium salt in the solution and the reaction conditions are so selected that all or most of the ammonia liberated during dissolution remains in solution. The ammonium salt may be chloride or sulphate. After the slaking step, the calcine may be mechanically separated from the slaked lime prior to treatment with the ammonium salt or alternatively may be added to the calcine without prior separation.  The carbonation step may be achieved by countercurrent contacting of the liquor with CO2 containing gas. In an example low grade calcine (32.4% P2O5) was upgraded to 37.2% P2O5 with a 95% recovery.
Patent GB-263223-A (GB)
Title: Improvements in or relating to steam superheaters
IPC: F22G7/06
Filed: 1925-09-22
Abstract: 263,223. Superheater Co., Ltd., and Robinson, E. A. Sept. 22, 1925. Fire and smoke tube superheaters.-A header comprises a series of alternate saturated and superheated steam compartments 7, 8, arranged below or at one side of and extending transversely of two longitudinal channels 1, 2, for saturated and superheated steam and connected with the respective compartments. Air spaces 14 extend between adjacent compartments, in which are located the superheater element securing bolts 19, their heads being situated between the channels and the compartments. The channels are separated throughout their length by an air space 5 except for connecting webs 6, and an air space 13 separates them from the compartment. Neckings 9, 10 provide a passage from compartments 7, 8 to channels 1, 2 respectively and are of less width than the compartments so as to form seatings for the bolt heads. Specifications 17990/11 and 11418/14 are referred to.
Patent GB-252657-A (GB)
Title: Improvements in or relating to sound recording and sound reproducing instruments
IPC: G10K11/02
Filed: 1925-09-22
Abstract: 252,657. Western Electric Co., Ltd., (Assignees of Harrison, H. C.). May 29, 1925, [Convention date]. Diaphragms.-The specification describes gramaphone sound-boxes having specially constructed diaphragms. That shown at 12 in Fig. 7 is preferably made of light, thin material, such as an aluminium alloy, and is stiffened, for example by providing deep concentric corrugations of different altitudes. The back 14 of the sound-box casing is provided with corrugations similar to, but shallower than, those of the diaphragm. Fig. 8 shows a diaphragm of similar material, which is concentrically corrugated at its central part 56, the portion 57 between the flat clamping edge and the central part being formed with tapered tangential corrugations. Specifications 213,528, [Class 13, Bells &c.]; 230,876*, and 231,410 are referred to.
Patent GB-461969-A (GB)
Title: Improved method of and means for dressing grinding wheels used for form-grinding
IPC: B24B53/08
Filed: 1935-08-24
Abstract: 461,969. Trueing grinding - wheels. COVENTRY GAUGE & TOOL CO., Ltd., HARLEY, H. H., YORSTON, J., and WAINWRIGHT, J. E. Aug. 24, 1935, No. 23740. [Class 60] A grinding-wheel used for formgrinding, for example, an annular ribbed wheel for treating screwthreads, is trued by means of a diamond &c. moved under control of a stylus moving relatively to a former shaped as an enlarged, and in some cases modified, replica of the form to be produced, and the stylus being moved by a combination of rectilinear and polar, or angular, motions. In one construction, the former 2 is fixed and a stylus 3 is moved along the shaped edge by a lever 5 pivoted at 6 to a saddle 7 movable rectilinearly along a fixed frame 8. The lever has a short arm 9 engaging, by a pivot pin 17, a block 10 slidable in a groove 11 in a drum 12 mounted to rotate in ball bearings 13 on a spindle 14, which may rotate in ball bearings 15 in the frame 8. At the lower side of the saddle 7 is a projection 18 engaging a helical groove 19 in the spindle 14, and the drum 12 is provided at its underside with a slot for engagement with the projection 18 and with a groove 20 to receive a block 21, which is carried pivotally by one arm 22 of a bell-crank lever journalled in the frame 8. The other arm 23 of the lever carries a pin 24 engaging a slot 25 in one member 26 of a compound slide carrying the dressing-tool 4, and the other member 27 of the slide is moved at right-angles to the movement of the slide 26 by a rack 30 operated by a gear sector 29 on the spindle 14. In operation, the rectilinear movement of the stylus 3 with the saddle 7 causes the spindle 14 to rotate partially, thus moving the slide 27, and the polar motion of the lever 5 causes the drum 12 to rotate partially, thus moving the slide 26 ; the ratios of the movements of the tool 4 to those of the stylus depend upon the ratios of the arms of the levers and the pitch of the groove 19, and may be equal for both movements of the tool or different, for example, less for the polar movement than for the rectilinear movement, in which case the shape of the former is altered correspondingly. In a modification, the dressing tool is carried by a pivoted arm so as to reproduce on a reduced scale the polar movements of the stylus, and the rectilinear movements of the tool may be produced by a screw instead of the rack gearing. The stylus may be moved by power by means of a lead screw ; the former may be moved relatively to the stylus. In a further modification, the stylus and the tool are carried by the two arms of a single lever, and the former and the pivot of the lever are moved, for example, by a differential screw, distances corresponding to the ratio of the arms of the lever. Specifications 216,507 and 239,859, [both in Class 60], are referred to.
Patent GB-857618-A (GB)
Title: A self-supporting directly heated cathode
IPC: H01J1/16
Filed: 1958-07-24
Abstract: 857,618. Thermionic cathode constructions. TESLA NARODNI PODNIK. July 24, 1958 [July 24, 1957], No. 23863/58. Class 39(1). In a self-supporting directly heated cathode of the cage type consisting of pure or thoriated tungsten wires which are arranged at equal distances along a cylindrical surface, the ends of the wires 1 remote from the current supply are connected together by at least one connecting ring 3 which consists of the same material as the cathode wires, and the said ends of the wires are threaded through loops formed on the outside or on the inside of the said connecting ring. The diameter of the connecting ring is preferably from 0À5 to 0À85 of the diameter of the cathode cage. The construction enables a structural member such as a getter to be placed inside the cathode cage after the latter has been built up. The Specification describes two known constructions, Figs. 1 and 2, (not shown), in which the ends of the cathode-wires are welded or soldered together at a point on the axis of the cathode cage.
Patent GB-1126155-A (GB)
Title: New 2h-isoquinoline-1-thione derivatives and process for preparing same
IPC: C07D217/22
Filed: 1967-05-23
Abstract: 1,126,155. 2H - Isoquinoline - 1 - thione derivatives. O. P. GAUDIN. 23 May, 1967 [1 June, 1966], No. 23888/67. Heading C2C. Novel 2H - isoquinoline - 1 - thione derivatives of the formula wherein R and R<SP>1</SP> which may be the same or different, are hydrogen, an aryl radical or an aryl radical substituted by halogen, or by an alkoxy or alkyl radical, and R<SP>11</SP> is a C 1-5  alkyl, an aralkyl, cycloalkyl or (CH 2 )n-Y radical wherein Y is a hydroxy, amino, alkylamino or heterocyclic radical, and n is an integer from 1 to 3, and R and R<SP>1</SP> not both being hydrogen when R<SP>11</SP> is an alkyl or hydroxyalkyl radical, are prepared by reacting the corresponding 1-thioisocoumarin derivative with a primary amine of the formula R<SP>11</SP>NH 2  and effecting ring closure of the thus obtained thiobenzamide of the general formula by means of a dehydrating agent.
Patent GB-202526-A (GB)
Title: Improvements in steering wheel lock for automobiles
IPC: B60R25/022
Filed: 1922-09-04
Abstract: 202,526. Rogers, F. H., (Coulter Manufacturing Co., Inc.). Sept. 4, 1922. Guarding against unauthorized use. - The steering hand-wheel may be locked to its shaft or set free therefrom by a key-controlled bolt, so as to prevent unauthorized use of the car. The boss 35 of the steering-wheel carries a sliding bolt 39 which can enter a notch 57 in a bush 51 keyed on the end of the steering-shaft (not shown). The bolt is operated by a key-controlled lock 45, and when it is retracted, to free the steering- wheel from the shaft, a pin 60 is pushed up by means of an incline 50 on the bolt and locks a cap 59 which is screwed on the boss 35. Thus the cap can only be removed when the bolt has been shot by the driver.
Patent GB-1053234-A (GB)
Title: Formation of foamed resin
Inventor: PARKER EARL ELMER
IPC: C08J9/14
Filed: 1963-06-17
Abstract: <PICT:1053234/C3/1> A foamed resin is produced by passing a liquid resin precursor through two distinct mixing zones, adding fluid blowing agent in the first zone, adding hardening catalyst or curing agent in the second zone and ejecting the mixture from the second zone to allow it to foam and harden.  The method may be used (a) to copolymerize a polyester of a polyol and an unsaturated dicarboxylic acid with an olefinically unsaturated monomer, (b) to prepare a framed polyurethane and (c) to prepare an epoxy-resin.  The unsaturated polyester may be prepared from a glycol, an unsaturated dicarboxylic acid or its anhydride.  0.5-4 moles of a saturated dicarboxylic acid may also be present, 0-20% excess of polyol may be used. The polyester may have an acid number of 0-60.  The polyester may be mixed with the monomer, a surface-active agent, a film toughening agent, e.g. another resin, a drier, or a flame retardant. Mixtures of polyesters may be used.  The curing catalyst may be a peroxide suspended in an inert liquid.  In examples polyesters are prepared from isophthalic acid, triethylene glycol, maleic anhydride, dipropylene glycol and propylene glycol; olefinic monomers are styrene and vinyl toluene and other additives are hydroquinone, diisobutylphenoxyethoxyethyl dimethyl benzyl ammonium chloride, copper naphthenate, cellulose acetate butyrate, chlorinated paraffin, Sb2O3, and cobalt octoate.  In polyurethane preparation the liquid resin precursor may be a polyol to which polyisocyanate is added as curing agent.  The polyol may be a polyester of a dicarboxylic acid and excess glycol or higher polyol having an OH value of 40-100 or a sorbitol/olefin oxide adduct.  The polyisocyanate may be replaced by an isocyanate terminated prepolymer.  The reaction mixture may contain 0.1-3% surface-active agent. 0.1-5% catalyst may be used. The blowing agent may be CO2 or a halocarbon, e.g. CCl2F2 or CCl3F. 0.5-40% may be used.  In a specific embodiment, Fig. 1, the polymerizable mixture is fed from 10 into zone 11 via pump 17.  The feed to 11 may be under pressure and should have a viscosity of at least 6000 centipoise. The temperatures of 10 and 11 are controlled by heat exchangers 18 and 19.  Blowing agent is added via 21 and 22 and the mixture is agitated by stirrer 27 and/or by recycling through 31, 17 and 16b.  36 is an assembly for removing entrained gases and 84 is a sampling device.  The mixture is fed from 11 to ejector 12, via pump 46, cooler 53a and inlet 52.  A sampling device may be provided between 11 and 12. Catalyst, optionally containing a diluent and 5-10% of the total blowing agent may be supplied to 12 via 69 and 70.  The mixture is stirred by stirrer 58 and discharged through orifice 77, the flow being controlled by clamp 76.  In another embodiment 11 may be replaced by a mixer similar in design to 12. The products may be moulded or used to coat walls.
Patent GB-1488853-A (GB)
Title: Carpet sweepers
IPC: A47L11/33
Filed: 1975-01-07
Abstract: 1488853 Carpet sweepers PRESTIGE GROUP Ltd 7 Jan 1975 [30 May 1974] 24089/74 Heading A4F A carpet sweeper comprises a divided brush 23, 23 extending transversely across and within the sweeper casing 1, 2, and which is rotated to sweep dust into a dust pan by movement of the sweeper over a supporting surface, the brush having two portions 23, the axes of rotation of which are inclined to each other and to the plane of a flat supporting surface when the latter is supporting the sweeper. The casing of the illustrated embodiment is supported by a pair of front wheels (10), Fig. 2 (not shown) and a central wheel 9, having projecting drive hubs 19 engaging drive bosses 21 on the inclined spindles 22 carrying the stocks 27 of the brush portions 23. The stocks 27 carry bristles 28, 30, 31, the latter projecting beyond the casing side walls 7 to facilitate sweeping in corners. The casing part 2 is of inverted U-section and acts as a fender. Dust pans (5, 6), Fig. 2 (not shown) are provided to the front and rear of the brush 23, 23, and a further rotary brush (33) extends across the front of the sweeper casing, and is constructed, arranged, and driven as described in Specification No. 1488852.
Patent GB-1148596-A (GB)
Title: A method of producing sintered diamond compacts bonded with titanium and zirconium
IPC: B01J3/06
Filed: 1966-05-31
Abstract: 1,148,596. Abrasive articles. INDUSTRIAL DISTRIBUTORS (SALES) Ltd. 31 May, 1966 [25 Dec., 1965], No. 24096/66. Heading C4V. [Also in Division C7] Sintered metal bonded diamond compacts are formed by compacting and heating to about 600‹ C. in a vacuum a powder mixture of diamond and titanium hydride or zirconium hydride and finally hot pressing the mixture e.g. at 1400‹ C. or a pressure of at least 2 tons/sq. cm. The diamond-hydride powders may be mixed with anhydrous acetone and the examples specify compositions containing 97% volume diamond and 3% Ti or Zr; 70% diamond and 30% Ti or Zr.
Patent GB-265257-A (GB)
Title: An improved process for the coating or covering of articles with cellulose acetate
IPC: B29C63/02
Filed: 1925-09-28
Abstract: 265,257. Ridley, F. T. Sept. 28, 1925. Ornamenting.-For the coating or covering of articles with cellulose acetate, the latter is employed as a sheet, tube, or other solid colloided form, and after softening the material by treatment with aqueous acetone in aqueous alcohol, the softened sheet or tube is stretched over the article, and finally allowed to dry, when the coating returns to its original condition while retaining its lustre. To the aqueous alcohol solution there may be added a proportion of ether and to either solution may be added soap for the purpose of removing grease &c. The solutions after repeated use, may be revivified by heating to temperatures up to the boiling point of the liquid.
Patent GB-738357-A (GB)
Title: Improvements in or relating to processes for the production of thin flexible glass coatings on wires, foils and similar supports
IPC: C23D5/00
Filed: 1953-09-01
Abstract: In making thin glass coatings on wires, foils or the like, at least one of the component materials of the glass is applied to the metal by evaporation in a high vacuum.  The coating, which may be, or include, silicon, boron or phosphorus, is then converted into glass by heating in an oxidizing atmosphere.  The glass, therefore, may consist of vitreous silicic or boric acids, and, if part of the metal, e.g. copper, of the wire &c. enters into chemical combination with the applied material during the heating, a coating of, e.g., copper silicate, borate or phosphate is formed.
Patent GB-638408-A (GB)
Title: Improvements in or relating to soap holders
IPC: A47K5/02
Filed: 1948-09-15
Abstract: 638,408. Soap holders. FERGUSON, J. D. Sept. 15, 1948, No. 24221. [Class 131] A soap holder comprises four glazed tiles 1 assembled to form a box and held in position by an enclosed bed of cement 2 which forms the base of the holder and on which a fifth tile is secured in a sloping position. If the edges of the tile are unglazed the exposed edges are painted with enamel paint. The Provisional Specification states that the assembling of the tiles is done in a mould.
Patent GB-722812-A (GB)
Title: Improvements relating to shock absorbers
Inventor: CLOUDSLEY JOHN LESLIE
IPC: F16F9/516
Filed: 1951-10-17
Abstract: 722,812. Piston packing. TANCHESTER PROPERTIES, Ltd. Jan. 16, 1953 [Oct. 17, 1951], No. 24226/51. Class 122 (1). [Also in Group XXXII] A piston in an hydraulic shock-absorber comprises two axially-spaced disc-like portions 7, 8, having a gap between in which a ring 11 fits with friction against the wall of a cylindrical casing 1, one of the piston portions (8) having a smaller diameter than that of the casing 1, and having a resiliently yieldable disc valve 12 operating against its outer face. The ring 11 comprises a band of rigid material embedded in rubber. The ring 11 may also be constructed as shown in Figs. 2 and 3. It may also comprise a rubber annulus in which is embedded a sinuouslyshaped resilient strip, Figs. 4, 5 (not shown). The ring 11 may, however, be of non-composite construction. A spring may be disposed between the piston portion 7 and the ring 11. In operation, on compression, the ring 11 rises against the piston portion 11, and permits flow round the periphery of the piston portion 8. On rebound, the ring 11 cuts off return flow around the piston portion 11, and the resilient disc valve 12 is lifted. According to the Provisional Specification, the invention is applicable to the pistons of pumps (e.g. tyre pumps).
Patent GB-188840-A (GB)
Title: Improvements relating to external ice cream freezing machines
IPC: A23G9/18
Filed: 1921-09-13
Abstract: 188,840. Hargreaves, W., Gott, T. W., and Swanston, E. Sept. 13, 1921. Solidifying and then removing films. - In freezing-apparatus of the type wherein cream or other substance is spread in a film on a rotary internally cooled drum and removed by a scraper when frozen, the feed roller or rollers 1 are adapted to be brought into and out of contact with the surface of the cooled drum 2 by manual or mechanical means, so as to obtain periods of feeding alternating with periods of cessation of feed whilst the drum remains in motion. The rollers 1 may be rotatably mounted in the cream receptacle 3, which may be raised and lowered by arms 7 mounted on a shaft 8 provided with a handle 12 or other operating means, such as the automatic mechanism described in Specification 188,841. The trough 3 may have lugs 6 guided over a frame projection 4. The rollers may be rotated by contact with the driven drum, or may be positively driven. Intermediate rollers may be employed to transfer the cream from the receptacle to the feed rollers, and the amount of feed may be regulated by doctors in connection with the feed rollers. The material may be supplied to the receptacle 3 by a shoot 11, and the frozen material removed by a scraper 22.
Patent GB-501766-A (GB)
Title: Improvements in or relating to the production of phenol-aldehyde synthetic resins
IPC: C08G8/28
Filed: 1937-09-06
Abstract: 501,766. Phenol-aldehyde condensation products. BAKELITE, Ltd. Sept. 6, 1937, No. 24331. Convention date, Dec. 12, 1936. Addition to 467,112. Samples furnished. [Class 2 (iii)] Oil-soluble phenol-aldehyde resins are prepared by subjecting a fusible phenol-aldehyde resin, prepared from a substantially pure alkyl-, aryl-, or aralkylsubstituted phenol, to a temperature of at least 175‹ C. for a time sufficient to increase its melting point and its oil-solubility whilst still retaining its fusible condition. The heating may be effected in vacuo or in an inert atmosphere such as ateam. Suitable phenols include phenyl-, amyl- and benzyl-phenols and suitable aldehydes include formaldehyde, paraformaldehyde, acetaldehyde and furfurol. The initial condensation may be catalyzed by alkalies or acids (such as oxalic, citric, succinic, formic, hydrochloric or boric acids) or effected in the absence of a catalyst. In examples a condensation product of m-xylenol or tert-butyl phenol and formaldehyde, prepared in the presence of oxalic acid, or a mixture of condensation products of tert-butyl phenol and p-phenyl phenol with formaldehyde, both prepared in presence of oxalic acid, is heated in the presence of steam. Samples have been furnished under Sect. 2 (5) of products obtained by heating in air, in vacuo or in steam a condensation product of m-xylenol and formaldehyde prepared in the presence of oxalic acid, and by heating in steam a condensation product of benzylphenol and formalin prepared in the presence of oxalio acid.
Patent GB-962922-A (GB)
Title: Production of nitriles and pyridine derivatives
Inventor: HARGRAVE KENNETH RAYMOND
IPC: C07D213/84
Filed: 1961-07-06
Abstract: A process for the production of organic nitriles and of pyridine bases or pyridine base carboxylic acids comprises reacting pyridine high-boilers in the vapour phase at an elevated temperature with ammonia and molecular oxygen over a catalyst useful in the production of cyanopyridines from methylpyridines, and heating the product in the liquid phase with a carboxylic acid. The expression "pyridine high-boilers" is defined and denotes a mixture of alkyl-pyridines with other compounds. The catalyst is preferably vanadium pentoxide supported on alumina and the reaction is preferably conducted at a temperature of from 350 DEG  to 380 DEG C. The product of the first stage of the reaction may be condensed to form two phases, the aqueous phase extracted with, for example, benzene and the extract combined with the oil phase after being dehydrated and freed from solvent. The second stage of the reaction may be conducted in the absence of a catalyst or in the presence of a mineral acid or catalyst. Temperatures in the range of 220 DEG -250 DEG C. are preferred for the production of pyridine base carboxylic acids, higher temperatures favouring the decarboxylation of the acids to yield the pyridine bases, particularly in the presence of a catalyst. An example is given. Specifications 777,746 and 962,921 are referred to.
Patent GB-919830-A (GB)
Title: Esters of cortical steroid hormones
Inventor: DICZFALUSY EGON RICHARD
IPC: C07J5/00
Filed: 1959-07-16
Abstract: The invention comprises esters of 17a -hydroxy- and 17a ,21-dihydroxy-3,20-diketo-4-pregnenes and the corresponding 1,4-pregnadienes with b -(p-alkoxyphenyl)-propionic acids of the general formula <FORM:0919830/IV (b)/1> wherein R represents an alkyl group containing 1 to 12 carbon atoms, and the preparation thereof by reacting the required steroid with the anhydride or the acid chloride of an acid of the above formula in a solvent such as pyridine, benzene, toluene, ether or chloroform at a temperature between 0 DEG C. and the boiling point of the reaction mixture, for a period between half an hour and 72 hours.  When an acid anhydride is used as the esterifying agent, the reaction may be carried out in the presence of an acid catalyst such as p-toluenesulphonic acid.  Thus the product may be a 17-ester of 17a -hydroxyprogesterone or a 21-ester of 11-desoxycorticosterone, cortisone, hydrocortisone, prednisone or prednisolone.  Therapeutic compositions having hormonal activity suitable for injection contain as the active ingredient the esters defined above, e.g. dissolved in sesame or peanut oil.