baber/WOPTO huggingface dataset:
Patent GB-634658-A (GB)
Title: Improvements relating to the sealing of joints
IPC: F16L23/22
Filed: 1947-02-14
Abstract: 634,658. Covers for resisting fluid pressure. ENGLISH ELECTRIC CO., Ltd., and HASSLER, E. H. H. Feb. 14, 1947, No. 4270. [Class 123(i)] [Also in Groups XXVI and XXVIII] In a fluid pressure resisting cover joint between two rigid members 10, 11 one of the members 11 has an external conical surface 11b and the other member has an internal conical surface 10a, the total apical angles of the conical surfaces do not exceed 25 degrees and are equal to each other or do not differ by more than 5 degrees, a ring of elastic material 14 is placed in circumferential tension upon the external conical surface 11b and stretched thereby to increase its mean diameter by not more than 25 per cent. and not less than 10 per cent. over its unstretched diameter, the ring has in its unstretched condition a durometer hardness not less than 20 and not more than 50, and the members 10, 11 are clamped together by mechanical means in precisely predetermined axial spatial relationship so as to compress the ring of elastic material 14 to a mean thickness not more than 80 per cent. and not less than 40 per cent. of its mean unstretched thickness and to stress it in shear. The conical surfaces 10a and 11b may be generated by slightly curved lines. Precise axial location between the two rigid members 10, 11 is provided by engagement of a machined radial surface 11c on one member 11 with the end surface of the other member 10, contact being checked through spy holes 11e. The two members 10, 11 may also be positioned in precise radial relationship by means of a circumferential flange 11d. Specification 514,971 is referred to.
Patent GB-1382275-A (GB)
Title: Anti-theft device in combination with a fuel injection pump of an internal combustion engine
IPC: B60R25/042
Filed: 1972-01-31
Abstract: 1382275 Anti-theft locks F CAMMI 31 Jan 1972 [4 Feb 1971] 4364/72 Heading E2A [Also in Division Fl] To lock the control rod 3 of a fuel injection pump 1 in a no-delivery position a rod-like member 23 engages one end of the control rod. The member 23 and a key-operated locking member 15 are arranged in a housing 7 fixed to the pump 1. In the embodiment shown rods 22 on the member 23 engage in bores 21 in the member 15 which is rotatable when the key is inserted, from the position illustrated to a position, Fig. 4 (not shown), in which a notch 28 in the head 25 aligns with a projection 27 in the housing bore 8 and the spring 26 moves the member 23 out of engagement with the rod 3. The member 15 may be guided for axial movement in the bore 8 and include a spring-biased pin which engages a hole in the bore to lock the member 23 in the rodengaging position when the member 15 is pressed into the bore. The axis of the cylindrical housing 7 may be disposed transversely of the rod 3, the rod then engaging the lateral surface of the member 23.
Patent GB-331893-A (GB)
Title: Improvements in or relating to the construction of roadways and the like
IPC: E01C5/22
Filed: 1929-02-09
Abstract: 331,893. Berry, A. F. Feb. 9, 1929. Block paving.-Artificial stone blocks 1, Fig. 2. are provided on the sides and ends with a thin adherent coating 4 of shock-absorbing material such as bitumen, the coated blocks being arranged on a layer 2 of shock-absorbing material supported by a concrete or other hard foundation 3. The layer 2 may be formed of bitumen or of fabric coated therewith. The upper edges of the blocks are shaped to form between the blocks transverse and longitudinal drainage channels, and the upper surfaces of the blocks are flat or slightly domed. Fig. 2 shows the upper edges of the blocks stepped as at 1<e>, and rounded as at 1<g>, but the flats 1<e> may be merged into the convex top 1<d>, as shown in Fig. 8. In a further modification, Fig. 12, the rounded edges 1<i> merge directly into the convex top. The blocks may be of the kind described in Specification 829,291, [Class 87 (i), Bricks &c.].
Patent GB-340164-A (GB)
Title: Process for working up materials containing lignin and cellulose
IPC: D21C11/00
Filed: 1930-02-10
Abstract: Wood and other vegetable materials containing both cellulose and lignin are treated, after chlorination in a moist condition, with a mixture of an organic solvent which is soluble in water, such as alcohol, and a mineral acid, the treatment being preferably conducted at raised temperature.  By this treatment chlorolignin is removed from the cellulose without weakening the fibre and a solution is obtained from which chlorolignin and other substances having a tanning action can be recovered.  Boiling alcohol which is preferably used on the counter-current principle extracts the chlorolignin and the cellulose can be purified by subsequent treatment with fresh alcohol.  If the material treated contains bark, the impurities arising therefrom are separated by an after-treatment of the cellulose with dilute alkali at a raised temperature, and, if desired, under pressure.  This alcohol extract contains 0,5-5 per cent of hydrochloric acid produced by the chlorination process, and also the chlorolignin which latter may be obtained therefrom by evaporation or may be precipitated by mixing with water or with 40 per cent caustic soda and filtering.  The filtrate freed from chlorolignin may be extracted with ethyl acetate to obtain other constituents having a tanning action.  These may also be obtained by precipitation from the filtrate with barium or calcium hydroxide. Instead of alcohol, other solvents such as methyl alcohol, acetone, glacial acetic acid, propyl alcohol, phenol and the like may be used. As mineral acid, hydrochloric acid is preferred, but sulphuric acid may be used.
Patent GB-1457861-A (GB)
Title: Process for the hydrodearomatization of petroleum fractions  containing sulphur nitrogen and aromatics
IPC: C10G45/48
Filed: 1974-01-31
Abstract: 1457861 Hydrorefining distillates BASF AG 31 Jan 1974 [2 Feb 1973] 04473/74 Heading C5E A process for removing aromatics and sulphur compounds from a petroleum fraction boiling within the range 25‹ to 250‹ C. comprises the steps: (a) catalytically hydrogenating the feed in a first reaction zone using a sulphur-resistant catalyst to reduce the sulphur content to below 3 ppm; (b) removing hydrogen sulphide from the product from the first reaction zone; (c) reacting the sulphur-free product from (b) with hydrogen at a hydrogen pressure of up to 105 atmospheres and a temperature of up to 370‹ C. in the presence of a catalyst comprising an active component which has been produced from the precursor Me<SP>2+</SP> 6  Me<SP>3+</SP> 2  (OH) 16  CO 3 .4H 2 O ; wherein Me<SP>2+</SP> is Fe, Co, Ni or Mg and Me<SP>3+</SP> is Al or Cr; and (d) cooling the product from (c) and separating it into a gas phase containing hydrogen, which can be recycled to the first hydrogenation (a), and a liquid product. The first hydrogenation can be carried out at 100-400‹ C. using a sulphided catalyst of either cobalt and molybdenum or nickel and molybdenum on alumina. The hydrogen sulphide is suitably removed by absorption on zinc oxide. The catalyst used in the second hydrogenation suitably comprises 5-64 wt. per cent nickel supported on alumina and/or silica.
Patent GB-1177456-A (GB)
Title: Methods and Apparatus for the Regulation of the Angular Velocity of the Shaft of a Direct Current Electric Motor
IPC: H02P7/282
Filed: 1968-01-30
Abstract: 1,177,456. Automatic speed control. SIMONSEN & MUSTAD A.S. Jan.30, 1968 [Jan. 31, 1967], No.4758/68. Heading G3R. An electric motor 1 has its speed regulated by means of a tachometer generator 2 whose output is rectified by rectifier 3 which is connected to a pre-amplifier 5 through a reference element 4 of the Zener type. The amplifier 5 effects a substantial amplification of the D.C. component of the input signal, whilst the A.C. component is subjected to no amplification or very small amplification. The output of the pre-amplifier 5 is applied to amplifier 6 which, in the case of field control, produces an output current only when the input voltage exceeds a threshold value. When the system is used for armature control, the amplifier 6 provides an output only when the input voltage is below the threshold level. The section 4 comprises a Zener diode in series with three ordinary diodes which compensate for temperature drift. The preamplifier 5 comprises transistors Q1, Q2, associated with a wave-shaping capacitor C1, and a capacitor C2 providing a negative feedback path for the A.C. components of the input voltage. The amplifier 6 has transistors Q3, Q4, Q5 in cascade, the output of the transistor Q5 being supplied to the control winding of the motor.
Patent GB-433779-A (GB)
Title: Improvements in knotting machines, more especially adapted for knotting warp threads
IPC: D03J1/16
Filed: 1934-02-13
Abstract: 433,779. Knot - tying apparatus. GIRALT, J., 25, Rue Domingo Fruitos, Sentmenat, Barcelona, Spain. Feb. 13, 1934, No. 4812. [Class 112] In a machine for knotting warp threads on the loom, arcs for the passage of pairs of threads before knotting, and sliding supports for the knotting elements in each of the arcs are provided. The warp threads 1 are unrolled from bobbins on a support 3 and pass through holes 4 to a thread guide 5. The threads then pass beneath a rod 6, between the teeth of a comb 7 and finally to a roller 8. The plate 9, over which the warp threads pass, may have a rotary movement. The thread guide 5 has lenticular orifices 13 and carry a longitudinal cord 14 confining the warp threads beneath it. The thread guide 5 is elastic and when curved between the walls 15, 16, leaves the threads free. When withdrawn from between the walls, it flattens out and grips the threads. The comb 7 is secured in a prism 18 and is rotated by a hand wheel 17. When the complete length of warp threads has been rolled on the cylinder 8, the prism 18 is rotated a quarter of a turn so that the teeth of the comb 7 move out from between the warp threads and assume a horizontal position. One flat face of the prism 18 then assumes the higher position and on this face is carried the thread guide 5. The prism 18 is then moved into its original position by the hand wheel 17, the thread guide 5 sliding down towards the cylinder 8. All the warp threads are then cut between the thread guide 5 and the comb 7 and all are knotted together to form a sharp strip. The new warp threads are then knotted to those on the loom by the following apparatus. A plurality of parallel arcs 19 are connected at one end to a rule 20 in such a manner that they are separated from each other to allow a warp thread to pass freely between. Each arc covers a support 21 carrying two members 22, 23 secured respectively on shafts 24, 25 so that the members 22, 23 can be lifted by turning the shafts 24, 25 by the hand wheels 26, 27. The supports 21 are secured on a spindle 28 which can be displaced axially by a screwthread 29 and nut 30. The ends of the loom warps and strip warps are placed between the arcs 19 and the knotting effected by sliding the supports 21 and turning the members 22, 23 by the shafts. Abutments 21, 32 inside the arcs facilitate knotting.
Patent GB-694088-A (GB)
Title: Improvements in mixing machines
IPC: B01F7/00
Filed: 1952-02-25
Abstract: 694,088. Mixing appliances. BEDNER, J. W. Feb. 25, 1952, No..4902/52. Class 86 A rotatable drum concrete &c. mixer has a stirring member driven with planetary motion about the drum axis by a gearing unit driven by. the rotation of the drum, the ' direction of orbital motion being opposed to the direction of rotation of the drum. The drum 1 is rotatable on. a fixed shaft 3 extending from a tiltable yoke 4 and is driven through gears 6 and 7. The stirring member 8 is rotatably mounted in a planet wheel carrier 10 which is freely rotatable about the central sleeve 2 of the drum. A gear wheel 14 and a reaction gear 15 are secured respectively to the sleeve 2 and shaft 3 so as to engage the parts of a composite gear wheel 11. A gear wheel 13 on the shaft 9 of the stirring member 8 engages a gear 12 which meshes with the gear 11.
Patent GB-585585-A (GB)
Title: Improvements in or relating to cathode ray tube screens
IPC: H01J29/18
Filed: 1944-03-16
Abstract: 585,585. Cathode - ray tubes. MERTON, SIR T. R. March 16, 1944, No. 4970. Drawings to Specification. [Class 39 (i)] A cathode-ray tube is provided with a screen formed of two or more materials, one of which exhibits short duration luminescence upon electron bombardment and another of which is excited to long duration luminescence by the first luminescence. The first material may be calcium tungstate and the second zinc sulphide. The latter may. be embedded in a layer of sodium silicate varnish and the calcium tungstate. is then dusted on the surface or the two substances may be applied to opposite sides of a mica sheet. Alternatively, the two may be mixed together before being formed into a screen.
Patent GB-804144-A (GB)
Title: Improvements in and relating to spindle mountings
IPC: F16C27/06
Filed: 1956-02-17
Abstract: 804,144. Centrifuges. WESTFALIA SEPATOR A. G. Feb. 17, 1956 [Feb. 19, 1955], No. 5037/56. Class 23 [Also in Group XXXIV] A vertical spindle 1 of a centrifuge is mounted in bearings 2, 3, 4 in a sleeve 6 which is resiliently supported in a machine frame. The upper end of the sleeve is resiliently mounted by a plurality of angularly spaced springs 6<SP>1</SP>. The lower end of the sleeve 6 rests on a resilient support 8 and is located by a rocking ring 13 arranged on a pin 9 of a closure member 10 In a modification, the lower end of the sleeve is located within a rocking ring secured to the machine frame.
Patent GB-1172545-A (GB)
Title: Fluorinated Unsaturated Organic Compounds
IPC: C07C25/28
Filed: 1967-02-02
Abstract: 1,172,545. Fluoro- or chloro-fluorovinyl derivatives; decafluorodiphenyl. MONTECATINI EDISON S.p.A. 2 Feb., 1967 [3 Feb., 1966], No. 5050/67. Heading C2C. [Also in Division C5] Fluoro- or chlorofluoro-vinyl derivatives of the formula wherein each of X and X<SP>1</SP> is a chlorine or fluorine atom and R<SP>11</SP> is an aryl group, an aromatic fluorohydrocarbon group, a saturated aliphatic fluoro-hydrocarbon group or an unsaturated aliphatic fluorohydrocarbon group other than perfluorovinyl, are prepared by heating, in the presence of copper at from 100 to 200‹ C, compounds of the formula either alone or together with compounds of the formula R<SP>11</SP>-I. The invention also comprises as novel compounds #-chloro-heptafluorostyrene and 1-chloronona-fluoro-pent-1-ene, which may be obtained by the above process. Decafluorodiphenyl is obtained as a byproduct of one of the above processes.
Patent GB-828096-A (GB)
Title: A process for stabilising and bleaching cellulose ester fabrics
IPC: D06L3/02
Filed: 1957-02-14
Abstract: Knitted fabrics of cellulose ester fibres of low hydroxyl content are bleached in an aqueous liquid and, before completion of the bleaching, are dimensionally stabilized by treatment with an aqueous liquid at a temperature of at least 250 DEG  F.  The stabilization may be effected by the bleaching solution itself, which may be at a temperature above 250 DEG  F. and under super-atmospheric pressure, or the fabric may be treated before bleaching, e.g. by a scouring liquid, at this raised temperature and pressure, or part of each of the scouring and bleaching processes may be at the raised temperature and pressure.  The fibres may be of cellulose acetate, butyrate, propionate, acetate-propionate, acetate-butyrate or acetate-formate. The bleaching solution may contain hydrogen peroxide, peracetic acid, oxalic acid, sodium hypochlorite or sodium chlorite or mixtures thereof, with or without sodium metasilicate, sodium hexametaphosphate and a dispersing agent, and may be at a pH value of 6.5 to 9.5.  The scouring liquid may contain soap or the sodium salt of oleyl taurine, or combinations of sulphonated oils and non-ionic detergents, and sodium hexametaphosphate.  In examples: (1) cellulose triacetate knitted fabric is scoured in a solution containing sodium hexametaphosphate and soap at a temperature of 250 DEG  F. and pressure of 15 lb/inch2 (gauge) and, after rinsing, is bleached with a solution containing peracetic acid, caustic soda and sodium hexametaphosphate at 260 DEG  F. and 20 lb/inch2 (gauge) and pH 6.5, the fabric being held throughout at constant dimensions; (2) a similar fabric is scoured at 270 DEG  F. and 27 lb/inch2 (gauge) with a sulphonated oil, an alkyl aryl polyoxyethylene ether alcohol and soda ash in aqueous solution at pH 8.5 and, after rinsing, is bleached at 230 DEG  F. and 6 lb/inch2 (gauge) with peracetic acid, soda ash, sodium hexametaphosphate and the sodium salt of sodium oleyl taurine in aqueous solution at pH 6.5; (3) a similar fabric is scoured and rinsed as in (2) and thereafter water at 120 DEG  F. is circulated through the fabric, oxalic acid is added, the temperature is raised to 160 DEG  F. and hydrogen peroxide, sodium chlorite and a corrosion inhibitor are added.  The solution has a pH of 3 to 4 and the temperature is further raised to 230 DEG  F. (6 lb/inch2 gauge), and the fabric is subsequently rinsed at 160 DEG  F. in a solution containing a wetting agent and tetrasodium pyrophosphate.
Patent GB-102101-A (GB)
Title: Improvements in and relating to the Driving Mechanism of Cyles and all like Pedal Crank Driven Machines.
Inventor: DONE JOHN SUTTON
IPC: B62M1/00
Filed: 1916-04-07
Abstract: 102,101. Done, J. S. April 7, 1916. Cranks arranged to serve as foot-rests on freewheeling.-A crank f is threaded on one end of the spindle a. In the driving position, a projection j engages with a projection e on a disk fixed on the spindle in such a position that the cranks are then in line. On free-wheeling, the crank is turned back through 180 degrees, whereupon the other faces of the projections engage. The crank may be disconnectibly held in the driving position by balls held in sockets by springs. A spring m may be provided to return the crank to driving position.
Patent GB-757203-A (GB)
Title: Improvements in copolymers of unsaturated nitriles with unsaturated nitrogenous bases
Inventor: KOWOLIK ERNEST JAN
IPC: C08F220/42
Filed: 1953-02-24
Abstract: Copolymers are made from an ethylenically unsaturated nitrile, e.g. acrylonitrile, methacrylonitrile, itaconic dinitrile or methylenemalonodinitrile, and a salt of the formula NHR1R2R3X wherein R1 is a group of the formula CHR4=CR5-CHR6 or CH3-CR5=CR6 R2 and R3 are hydrogen atoms, alkyl groups, cyclohexyl groups, benzyl groups or groups of the same formula as R1; R4, R5 and R6 are hydrogen atoms or methyl groups; and X is the radical of a monobasic acid, e.g. the hydrochlorides, hydrobromides, formates and acetates of allylamine, N-methyl allylamine, N-ethyl allylamine, N,N-dimethyl allylamine, 2-methallylamine, N,N - diethylmethallylamine, crotylamine, 1 - amino - 1 - methyl - propene - 1, 1 - amino - 2 - methyl - propene - 1, diallylamine, N-methyl diallylamine and triallylamine. Polymerization may be carried out in bulk, solution or aqueous dispersion or emulsion; in aqueous media dispersing agents such as sodium sec.-octadecyl sulphate may be present.  Polymerization initiators specified are potassium and ammonium persulphates, hydrogen peroxide, benzoyl peroxide, lauryl peroxide, tert.-butyl hydroperoxide and azo-di-isobutyronitrile; the initiator may be activated by the presence of metallic ions, e.g. those of copper or silver, or by reducing agents, e.g. sulphur dioxide.  Also present during polymerization may be chain transfer agents such as higher alkyl mercaptans.  The saline copolymers may be converted to basic copolymers by treatment with strongly basic reagents such as sodium and potassium hydroxides and barium peroxide, the basic copolymers thus produced having good affinity for acid and direct cotton dyestuffs.  The treatment with the basic reagent may be carried out when the saline polymer is in powder or filamentary form; alternatively a solution of the copolymer may be spun into a basic coagulating medium, e.g. hot aqueous caustic alkali, which removes the acid so that filaments of the basic copolymer are obtained directly.  The Provisional Specification describes also the use in copolymerization of the salts of unsaturated cyclic amines such as vinyl pyridines, piperidines, benzylamines, and cyclohexylamines, and the use of copolymerizable monomers other than nitriles, such as vinyl and vinylidene chlorides, vinyl acetate and benzoate, isopropenyl acetate, styrene, acrylic, methacylic, itaconic, maleic and fumaric acids and their anhydrides, amides and esters, butadiene, divinyl benzene and diallyl phthalate.
Patent GB-413788-A (GB)
Title: Manufacture of chromiferous dyestuffs
IPC: C09B45/01
Filed: 1933-02-20
Abstract: Chromium compounds of the azo dyestuffs o-oxyaminonaphthalene sulphonic acid --> a naphthol are made by treating the o-oxyazo dyestuff in the usual manner, in neutral or acid medium, with an agent yielding chromium then rendering the reaction mixture alkaline and completing the chroming in the alkaline reaction mixture.  They give fast even blue to black shades on materials of all kinds, including regenerated celluloses, cellulose esters and ethers and lacquers.  In examples: (1) the dyestuff 1 - amino - 2 - naphthol - 4 - sulphonic acid --> b -naphthol is boiled with chromium fluoride and sodium formate for 5 hours and for another 2 hours after addition of sugar and caustic potash; (2) basic chromium sulphate is used as in (1); (3) the dyestuff in (1) is boiled with chromium acetate and then with sugar and caustic potash; (4) the same dyestuff is boiled with chromium formate and sodium acetate and then with sugar and caustic soda; or (5) with chromium formate and then with sugar and caustic potash.  Examples of the dyeing process are also given. Specifications 364,148 and 408,497 are referred to.  The Specification as open to inspection under Sect. 91 comprises also the following examples: (6) the dyestuff of (1) is dissolved with caustic soda and sugar, boiled with Cr2O3, formic acid and oxalic acid and finally with caustic soda; (7) the same dyestuff is dissolved in caustic soda, boiled with a solution of Cr2O3 in chloracetic acid and afterwards with caustic soda and sugar; (8) the same dyestuff is refluxed with caustic soda and chromium formate and finally with caustic soda and sugar; (9) a solution of Cr2O3 in oxalic and formic acids is used as in (8); (10) the dyestuff 1-amino-2-naphthol-4-sulphonic acid --> a -naphthol is dissolved in caustic soda, refluxed with chromium formate and then with caustic soda; (11) the dyestuff in (1) is boiled with chromium formate and then with caustic soda; (12) the dyestuff from nitrated 1-diazo-2-naphthol-4-sulphonic acid and b -naphthol is suspended in water and caustic soda, boiled with sodium formate and chromium formate and then with caustic soda; (13)--(14) the dyestuff of (12) is boiled with aqueous chromium fluoride with or without glass powder and then with caustic soda.  This subject-matter does not appear in the Specification as accepted.