baber/WOPTO huggingface dataset:
Patent GB-776145-A (GB)
Title: Improvements in or relating to the working up of crude benzene
Inventor: EISENBERG ALBRECHT
IPC: C07C7/00
Filed: 1953-05-07
Abstract: Purified fractions are produced from crude benzene containing pyridine bases and unsaturated compounds by pressure refining, comprising fractionally distilling the crude benzene to give a number of fractions in such a way that the said bases and the said unsaturated compounds are concentrated in some of these fractions, removing the said bases by treatment with dilute acid and removing, or recovering, the unsaturated compounds from these last-mentioned fractions by known means and then subjecting at least some of the fractions to pressure hydrogenation either severally or in admixture. In an example, crude benzene is fractionally distilled into the following fractions: (1) pre-runnings containing cyclopentadiene, (2) benzene containing 0.3 per cent cyclopentadiene, (3) benzene-toluene mixture, (4) toluene, (5) xylene containing styrene, (6) "solvent naphtha" containing coumarone and indene, and (7) materials boiling above 180 DEG  C.  Fraction 1 is heated in a pressurized vessel at 100 to convert cyclopentadiene to dicyclopentadiene, and the lower-boiling material is separated therefrom by distillation and added to fraction 3.  Fractions 2, 3, 4 and 5 are washed with dilute sulphuric acid to remove pyridine bases in the form of sulphates which may be decomposed with sodium hydroxide and the free bases thus obtained may be separated by distillation. Fractions 2, 3 and 4 and then separately pressure hydrogenated by preheating and passing with hydrogen over a hydrogenation catalyst at 30-100 atmospheres gauge and at 300-450 DEG  C. giving respectively pure benzene, benzine and pure toluene.  Fraction 5 is freed from m- and p-xylene and the styrene is converted to polystyrene by boiling under reflux.  The remaining o-xylene is separated therefrom by distillation and pressure hydrogenated with the m- and p-xylenes to give pure xylenes. Fraction 6 is freed of phenols, treated with dilute acid to remove bases, and then with concentrated sulphuric acid to polymerize coumarone and indene. The resulting coumarone-indene resin is separated from the remaining heavy benzene by vacuum distillation. From fraction 7, naphthalene is obtained by fractional distillation and worked up to tetrahydronaphthalene or hexahydrophenol, and the higher boiling wash oil is returned to the benzene recovery plant.
Patent GB-1508373-A (GB)
Title: Joining a knitted edge to a piece of material
IPC: D04B7/10
Filed: 1975-03-26
Abstract: 1508373 Knitting machines; linking UNIVERSAL MASCHINENFABRIK DR RUDOLF SCHIEBER KG 26 March 1975 [27 March 1974] 12778/75 Headings D1C and DIG A knitted edge 10 produced on a doublebed flat knitting machine for subsequent linking to a piece of material 12 is transferred, with the piece 12, to a linking machine by a method including the steps of a) transferring the two rows of stitches of the edge 10 which are to be linked to piece 12 from the needles 21, 22 to stitch-holding elements 6, 7 and 6, 8 in auxiliary beds 2, 3 b) displacing the beds 2, 3 out of the operating region of the needle beds, e.g. by movement with the carriage, and preferably inverting the former beds so that the longer piece 12 is suspended, c) transferring the piece 12 from a point bar to the elements 6, 8, d) transferring the row of stitches held on elements 6, 7 to elements 6, 8, e) transferring the two rows of stitches with the interposed piece 12 to a linking points bar 18 for presentation to a linking head on the machine. Instead of the simple edge shown an edge with a folded over portion may be knitted in which case the relevant course may be placed on the elements 6, 8 by a drawing- off comb of the machine.
Patent GB-179563-A (GB)
Title: Improvements in and relating to a method for the pupinising of high frequency telephone lines
IPC: H01B11/16
Filed: 1922-05-08
Abstract: 179,563. Felten & Guilleaume Carlswerk Akt.-Ges. May 7, 1921, [Convention date]. Inductances.-Telephone lines for use in highfrequency telephony are loaded with inductance coils wound in known manner upon an annular core of non-magnetizable and non-conducting material, in order to eliminate the usual losses due to hysteresis and eddy currents in the iron core, which losses in the case of high frequency currents would be very large. The Specification as open to inspection under Sect. 91 (3) (a) also states that in order to avoid the skin effect, the winding wire may be subdivided in the manner of a braid. This subjectmatter does not appear in the Specification as accepted.
Patent GB-110736-A (GB)
Title: Improved Binders or Covers for Books and the like.
Inventor: HUNT WILLIAM
IPC: B42F13/00
Filed: 1917-09-11
Abstract: 110,736. Hunt, W. Sept. 11, 1917. Covers.-The stiff cover of a temporary binder in which the sheets are held by laces, as in Specification 9674/12, or by posts, rings, &c. is jointed so as to enable the binder to be folded. The cover C which folds inwards has one or more joints A near the centre, while the other cover D has two or more joints B<1>, B<2>, B<3>, B<4>. The joints are made by strips of rigid material joined by cloth &c., and the strips are placed near together, as shown in Fig. 4, so that the joint can yield in one direction only.
Patent GB-131815-A (GB)
IPC: A61B17/06
Abstract: 131,815. Slater, C. Jan. 3, 1919. Sewing-needles. - The eye of the needle is formed by bending the reduced end portion e into the shape shown leaving a tapering passage d by which the thread' can be passed into the eye.
Patent GB-457762-A (GB)
Title: Process of obtaining new thio-barbituric acid compounds
Filed: 1935-05-03
Abstract: Thiobarbituric acids substituted in the C : C-position by (1) a saturated or unsaturated alkyl group, and (2) a saturated or unsaturated alkyl or halogen-alkyl group containing 4--6 carbon atoms, are prepared by condensing the corresponding disubstituted malonic acid esters with thiourea.  The products possess therapeutic properties.  The salts with alkali and alkaline earth metal hydroxides and with organic bases, particularly mono- and di-alkylamines, are described.  Examples are given of the preparation of ethyl-(1-methyl-butyl)-, allyl-(2-methyl-allyl)-, ethyl-sec-butyl-, allyl-sec-butyl-, ethyl-(3-chloro-2-butenyl)- and ethyl-(2-ethyl-butyl)-thiobarbituric acids from thiourea and the corresponding malonic acid diethyl esters, and reference is also made to ethyl-(2-methyl-allyl)-, methyl - (2 - methyl - allyl)-, methyl-(1-methyl-butyl)-, ethyl-n-butyl- and ethyl-isoamyl-thiobarbituric acids.  Malonic esters.--Allyl - (2 - methyl - allyl)-malonic acid diethyl ester is obtained by reacting sodium malonic acid diethyl ester first with 2-methyl-allyl bromide and then with allyl bromide. Ethyl - (3 - chloro - 2 - butenyl)-malonic acid diethyl ester and ethyl-(2-ethyl-butyl)-malonic acid diethyl ester are formed when ethyl-malonic acid diethyl ester is condensed with 1 : 3-dichloro-butene-2 and 2-ethyl-butyl bromide respectively.
Patent GB-653686-A (GB)
Title: Apparatus for initiating explosive charges in expandible rivets, staybolts and the like
IPC: F16B19/12
Filed: 1948-05-14
Abstract: 653,686. Rivet-expanding gun. CANADIAN INDUSTRIES, Ltd. May 14, 1948, No. 13268. [Classes 92 (ii) and 119] A gun for igniting explosive charges contained in expandable rivets, rods and the like for the purpose of expanding them, has its muzzle surrounded by means for dissipating noise, arresting flame, reducing recoil, and retaining any debris produced on firing. The device shown consists of concentrically arranged cylinders 2, 5, 10, 11, of which cylinder 2 receives the gun barrel, and cylinders 5, 10, are perforated at 6 to fit over the member to be expanded. Projecting from the front surface of the device is the front end of a spring-controlled rod 17 which, when the device is pressed against the object to which the rivet is applied is pushed to the rear and, by cam surfaces, rotates a lever 21 on a spindle 24. This rotation moves a detent 25 from the path of the trigger 26 to permit firing. The gases of explosion or a projectile act on the rivet which is adjacent the perforation 6, and the gases of explosion pass through holes in the cylinder 5 and are deflected by the other cylinders to escape eventually in a forward direction. The device has a handle 13 fitted with a flash guard 14. U.S.A. Specifications 2,412,886 and 2,412,887 are referred to.
Patent GB-349743-A (GB)
Title: A method of moulding ferro-concrete articles and means therefor
IPC: B28B23/02
Filed: 1930-04-30
Abstract: 349,743. Moulding posts &c. SOC. LAP, 38, Quai Henri IV, and SOC. DES APPLICATIONS MECANIQUES DU CIMENT ARM•, 18, Rue de Tilsitt, both in Paris. April 30, 1930, No. 13315. Convention date, April 30, 1929. [Class 87 (ii).] Comprises means for positioning reinforcing members in a mould for making ferro - con - crete articles in which mixtures are used which are subjected to rapid vibration and then removed from the mould before setting, for example as described in Specification 307,638, [Class 87 (ii), Moulding plastic &c. substances]. Various means of securing the reinforcing members are described. Fig. 1 shows reinforcing bars c spaced at intervals by wire stirrups d which are supported by triangular side strips f and a bottom strip e. Fig. 4 shows a similar reinforcement supported on angled members i arranged at intervals along the length of the mould. Members of channel-section contacting with three sides of the reinforcement also are used. Fig. 10 shows spring clips p connected to the lid or cross-bar m, which are pulled out and release the bars c when the concrete has set sufficiently to prevent the bars moving. In another form the spring clips engage the lower edges of the rectangular stirrup frames and are removed when the inverted mould is pulled off the moulded block. Fig. 12 shows the rod c positioned by three members q, r.
Patent GB-210684-A (GB)
Title: Improvements in writing and drawing devices
IPC: B43L1/12
Filed: 1923-05-18
Abstract: 210,684. Deutsch, H. Feb. 8, 1923, [Convention date]. Writing tablets.-In writing and drawing devices of the kind comprising a base coated with beeswax, paraffin wax, or the like and covered by a sheet of translucent paper, fabric, or the like, with or without a transparent protective sheet of celluloid or cellulose acetate, the writing is obliterated by a strip-like device arranged between the adhesive base and the paper sheet and adapted to be displaced relatively thereto to separate the adhering portions of the adjacent surfaces. The wax-coated base plate c, translucent sheet e, and celluloid or like film d are secured together at their upper and lower edges f, g which are preferably provided with sheetmetal borders. This writing plate may be slidably mounted within a receiving slide a of cardboard or the like having metal borders b and a window-like opening h in its front surface and provided near its open edge i with a string, wire, or like strip k tensioned between the longitudinal edges of the slide and disposed above the base plate c. The interior face l of the rear portion of the slide may be used as a writing tablet for permanent notes, or advertisements may be printed thereon which are visible when the writing plate is pulled out. The slide may be provided with window-like openings in both its front and rear faces, the base plate being also provided with a wax coating &c. on both sides with a raising or separating strip for each such writing-surface. When the plate is pulled out the writing on both sides is obliterated simultaneously. In another modification, two writing plates are arranged back to back in a double slide provided with a separating partition, each plate being slidable independently of the other. In another modification, the writing plate is fixedly secured within the receiving slide and the obliterating strip protrudes from the sides of the slide and is movable longitudinally within guide slots. The obliterating strip may also be divided in the middle for selectively raising either side of the writing-surface from the adhesive base. Specification 201,431 is referred to.
Patent GB-876502-A (GB)
Title: Toothed clutch member
IPC: B23Q16/08
Filed: 1959-04-20
Abstract: 876,502. Protractors. ZEISS-STIFTUNG, CARL, [trading as ZEISS, C. [Firm of]] April 20, 1959 [April 22, 1958], No. 13367/59. Class 97(3) [Also in Group XXIV] A device for measuring the angle of, for example, a glass prism 50 comprises a rotatable disc member 14 with radial clutch-like teeth co-operating with similar but elastic teeth (see Group XXIV) on a fixed disc 12 mounted in a recessed base member 10. The disc 14 is adapted to be raised out of engagement with the disc 12, by means of a lever arm 20 operating a tubular threaded shaft 17 acting on the disc 14, and then rotated through an angle indicated by a scale 29 on the disc and a pointer 28 on the base 10. An abutment 21 with a vertical radial face 21a is provided on the top of the disc 14 and the prism 50 to be measured is placed against this face. The disc 14 is then rotated until the other face of the prism is nearly engaging a vertical radial face 22a of a pointer 22 and it is then lowered into engagement with the disc again. This pointer 22 is carried on an arm 23 inside the base 10 which is secured by a spring leaf 23a at the axis of the discs 14, 12 and is adjustable angularly by a micrometer screw device 25 having a scale 27 cooperating with a pointer 26. The pointer 22 can thus be adjusted finely until its face 22a touches the other face of the prisms. The combination of the two readings of the scales 28 and 27 gives the angle of prism 50.
Patent GB-753171-A (GB)
Title: Carbamido-sulphonamides
IPC: C07C311/47
Filed: 1954-05-07
Abstract: The invention comprises carbamido-sulphonamides of the formula <FORM:0753171/IV(a)/1> in which R represents a divalent aromatic radical and R1, R2, R3 and R4 represent monovalent radicals of which at least one is a monovalent radical other than hydrogen, and also compounds of the formula <FORM:0753171/IV(a)/2> in which R3 and R4, which may be the same or different, represent hydrogen atoms or monovalent radicals. Carbamido-sulphonamides are obtained by reacting an aromatic isocyanatosulphonic acid chloride with an amino compound which is either ammonia or a substitution product thereof, other than 2-amino-benzoic acid methyl ester, containing at least one free hydrogen atom attached to the nitrogen atom.  Compounds of the second general formula are obtained by reacting an aromatic isocyanatosulphonic acid chloride with 2-amino-benzoic acid methyl ester and reacting the sulphochloride so obtained with an amino compound of the general formula NHR3R4.  The isocyanatosulphonic acid chlorides are described in Specification 748,166.  Suitable substitution products of ammonia are hydrazine and primary and secondary amines of the aliphatic, aromatic, cycloaliphatic and heterocyclic series.  The acid chloride can be reacted with two mols. of the amine, or in two stages, in the first of which the acid chloride is reacted with one mol. of an amine HN.R1R2 and the intermediate is then reacted with a further one mol. of an amine HN.R3R4, the isocyanato group being the more reactive.  In the first step amines substituted by halogen, ether, keto or tertiary amino groups can be used.  In the second stage, such amines and also those containing hydroxy groups are suitable for reaction with the carbamido derivative.  When the amino compounds contain sulphonic acid or carboxylic groups the second stage is preferably effected in aqueous medium, liberated hydrogen chloride being bound by inorganic alkali.  In example (1) di-n-butylamine and isocyanotobenzene-p-sulphonic acid chloride are reacted and the carbamidosulphonic acid chloride is then reacted with aniline to give the carbamido-sulphonamide of the formula <FORM:0753171/IV(a)/3> In similar examples the same acid chloride is reacted with (2) a -amino-pyridine and ammonia; (3) two mols. of ammonia; (6) 3,4-dichloroaniline and ammonia; (7) two mols. of 3,4-dichloroaniline; (8) p-sulphanilic acid and ammonia; (9) 4-amino-benzoic acid and di-n-butylamine.  The product in the last example, N - (p - carboxyphenyl) - N1 - (p - dibutyl-sulphonamido-phenyl)-urea is converted to its methyl ester by reaction with diazomethane.  In Example (4) the acid chloride is reacted with 2-aminobenzoic acid methyl ester. Treatment of the sulphochloride product with ammonia produces a sulphonamide group and closure of a ring to form a quinazoline derivative of the formula <FORM:0753171/IV(a)/4> In Example (5) the analogous N-dibutyl compound is formed.
Patent GB-1255197-A (GB)
Title: Packing debris in mines
Inventor: COOK HUMPHREY GEORGE
IPC: E21F15/06
Filed: 1969-03-14
Abstract: 1,255,197. Reciprocating conveyers. COAL INDUSTRY (PATENTS) Ltd. 3 March, 1970 [14 March, 1969], No. 13475/69. Heading B8A. [Also in Divisions E1-E2] An apparatus for packing debris in mines comprises a series of paddle devices such as 24 pivotally mounted on respective advanceable mine roof supports and angularly displaceable by hydraulic means as at 29 to move debris along a pack 20. Each device 24 has adjustable paddles 34 which are held vertical during the packing stroke and are pivoted to a non- operating position during the return stroke. The means 29 is a ram or a rack and pinion mechanism. The devices 24 may be powered from a common hydraulic source with a pressuresensitive changeover valve for actuating each return stroke. A retaining wall 40 prevents spillage of the pack, which is fed with debris over a retaining plate 22 by a conveyer.
Patent GB-253509-A (GB)
Title: Screw threading dies and holders therefor
IPC: B23G5/04
Filed: 1926-05-28
Abstract: 253,509. Bruno, R. June 13, 1925, [Convention date]. Void [Published under Sect. 91 of the Acts]. Screwing dies and dieheads; stocks and dies.- A divided screwing-die is used in a hinged stock and may be adapted for either hand or machine use. A circular die is divided into two or four segments 5, Fig. 7, which are retained in pockets of the hinged arms 77, 78 by screws 57. Spigots may be provided in the pockets to co-operato with axially aligned holes in the dies, or projections may be provided on the inner circular surfaces of the pockets. A spring located in recesses 80 of the arms tends to open the dies and a lug 85 on one arm passes through the forked end of the other to serve as guiding means. When used in a machine the pivot 79 of the hinge slides in a stationary bearing 88 and the free ends of the arms are guided between blocks 93, 94 which may be fixed or adjustable by a screw 95. After a predetermined length of thread has been cut the arms spring open against stops 96, 97, and for taper threading the blocks are given a diverging contour. As applied to a die-stock, the part 103, Fig. 11, carries handles 104 and has hinged thereto the part 105 adjusted by a nut 106 and a spring 107. In a modified form of holder which is suitable for hand or machine use the dies are mounted in a spring ring 100, Fig. 9, adjusted by a screw 102 and provided with external ribs or indentations. Each die may be composed of external discs, or several hinged stocks may be coupled together, the first discs having roughing teeth while the remainder finish and gauge the thread. Alternatively, each disc may cut its own thread.
Patent GB-1022861-A (GB)
Title: Substituted 3-pyrazolidinones
Inventor: NICHOLAUS BRUNO JOHN ROBERT
IPC: C07C57/58
Filed: 1961-04-14
Abstract: The invention comprises compounds of formula <FORM:1022861/C2/1> where R is alkyl, aryl or aralkyl, R1 is alkyl of at least 2 carbon atoms, aryl or aralkyl, and R2 and R3 are alkyl, monocyclic aryl or aralkyl or both are hydrogen; and their preparation by heating an a ,a -R,R1-b -propiolactone with a solution of a hydrogen halide in an inert organic solvent to obtain an a ,a -R,R1-b -halopropionic acid converting this to the acid halide or ester, which is then refluxed with a hydrazine R2NH.NHR3 optionally in the presence of a proton acceptor in an anhydrous organic solvent; the products may be N-alkylated.
Patent GB-809468-A (GB)
Title: Improvements in or relating to the feeding of articles in wrapping or packaging machines
Inventor: ROSE ALFRED GERMAN
IPC: B65B35/46
Filed: 1956-05-03
Abstract: 809,468. Rotary conveyers. ROSE BROS. (GAINSBOROUGH) Ltd. April 18, 1957 [May 3, 1956], No. 13639/56. Class 78 (1). [Also in Group XVII] The device described in Specification 729,223 is improved by the provision of a series of radial grooves 15, one for each pocket, in the surface of the feed wheel 11. The grooves are preferably of arcuate cross-section and deepen progressively from points adjacent the centre of the wheel until they merge into the pockets 12. The device shown is otherwise similar to that shown in Figs. 1 and 2 of Specification 729,223. The grooves improve the conveying action of the wheel and guide the articles into the pockets.
Patent GB-218446-A (GB)
Title: Plug cocks
IPC: F16K5/22
Filed: 1923-05-23
Abstract: 218,446. Martin, J. C. May 23,1923. Plug cocks.-A plug cock is pressed to its seating by spring or like mechanical resilient means, and is provided with packing on the smaller end, and with lubricating-passages having a non-return valve at the inlet. The casing 10 is closed at the lower end by the cap 14 which encloses the spring &c. 13 to press the plug 12 against its seating. Fibrous packing rings 20 are provided, and are pressed against the smaller end of the conical surface by a gland ring 28. The upper end of the plug is provided with shoulders 34 coacting with a stop on the gland ring, to limit the rotation. The plug is lubricated by means of channels 37, 38, connected with a central chamber 42. A hollow member 48 screws into the upper end of the plug and carries a nipple 50 provided with a non-return valve 47. The device is filled with lubricant, which is forced into the passages 37, 38 by screwing down the member 48. Alternatively, the non-return valve may be provided in the member 48, the upper end of which is then screw-threaded externallv to receive a grease gun. In a modification, the packing 20 may surround the cylindrical stem of the valve.
Patent GB-437892-A (GB)
Title: Improved apparatus for the extraction of liquid from material such as sludge or slurry
IPC: B30B9/24
Filed: 1934-05-07
Abstract: 437,892. Filters. THOMSON, W. R., 99A, Bloor Street West, Toronto, Canada. May 7, 1934, No. 13765. [Class 46] An endless mat 25, Fig. 1, passing round rollers 26 and supporting the upper run of an endless straining-band 18 has, on its outer surface, grooves 60, Fig. 7, with restricted mouth portions and the ends of which open downwards and communicate successively with chambers 75, Fig. 3, in hollow framework 38. Rib-like zigzag projections 61a may be formed on the mat between the grooves. Each chamber 75 is connected by a valved pipe 41 to suction and to a source of gas under pressure and by a pipe 70 to a drain. Sealing grooves, kept full of liquid, are formed in the framework 38 around the openings to the chambers 75. The material under treatment is supplied to the straining-band through a hopper 11 with an adjustable gate-valve 12, and is dried by suction and an upward blast of heated gas as it passes horizontally. The cake is discharged on to a conveyer 44 and the band is cleaned by means of a beater 57 and spray from a pipe 58. Deckle straps 19 retain the material on the band and squeeze rollers with or without a compression band 46 may also be provided. The upper run of the mat may be supported by rollers 54. In a modified form of apparatus, the grooves 33 communicate also with chambers in intermediate frames which are also connected to the pipes 41.