baber/WOPTO huggingface dataset:
Patent GB-848764-A (GB)
Title: Improved anion-exchange process for uranium recovery
Inventor: EVEREST DAVID ANTHONY
IPC: B01J47/12
Filed: 1958-03-13
Abstract: Anion exchange resins are obtained by replacing at least 1% of the combined chlorine in vinyl chloride polymers, for example polyvinyl chloride or a copolymer of vinyl chloride with vinyl acetate or vinylidene chloride, with basic nitrogen containing groups, for example by reacting with ammonia, primary, secondary, or tertiary aliphatic or alicyclic amines, for example monoethylamine, diethylamine, trimethylamine or cyclohexylamine, or with a primary or secondary aromatic amine, or with a polyamine, which last will result in a certain degree of cross-linking.  Suitable polyamines include ethylene diamine, propylene diamine, hexamethylene diamine, triethylene tetramine and tetraethylene pentamine.  The resin may contain both strongly and weakly basic groups, which may be introduced either by aminating with a mixture of a tertiary amine and a secondary or primary amine or ammonia or by first forming a material having only weakly basic groups and then quaternising a portion of these, for example with methyl or ethyl bromide, iodide, or sulphate.  To prevent blistering the amination may be carried out in aqueous or inert non-aqueous solvents, for example a -methyl tetrahydrofuran. Specification 836,155 is referred to.ALSO:In the recovery of uranium from aqueous solutions, for example uranium sulphate, an anion exchange material, derived from a vinyl chloride polymer by replacement of at least 1% of the chlorine atoms by basic nitrogen-containing groups, is employed in the form of sheets.  The process is applicable to the recovery of uranium from aqueous pulps. The vinyl chloride polymer may be polyvinyl chloride or a copolymer of vinyl chloride with vinyl acetate or vinylidene chloride.  The basic nitrogen-containing groups may be introduced by reaction with ammonia, primary, secondary, or tertiary aliphatic or alicyclic amines, for example monoethylamine, diethylamine, trimethylamine or cyclohexylamine, or with a primary or secondary aromatic amine or with a polyamine, which last will result in a certain degree of cross-linking. Suitable polyamines include ethylene diamine, propylene diamine, hexamethylene diamine, diethylene triamine, triethylene tetramine, and tetraethylene pentamine.  The resin may contain both strongly p  and weakly basic groups.  When recovering uranium from pulps, the resin sheets are desirably extended upwardly in the pulp and gas is forced upwardly through the pulp to keep the particles suspended.  Specification 836,155 is referred to.
Patent GB-195387-A (GB)
Title: Improvements in filing cases for documents
IPC: B42F13/30
Filed: 1923-03-21
Abstract: 195,387. Oliveau, H. F. A. Le Breton-. March 25, 1922, [Convention date]. Post files.-In a post file comprising interengaging pins and sockets secured on supporting plates, one of which is adapted to slide and turn relatively to the other, the fixed supporting plate is pivoted to the cover of the file so as to allow the sockets and pins to be brought to any desired angular position relatively to one another and to the cover. The sockets a are attached to an angle-shaped plate c, c<1>, which is pivoted to the cover d on hinges d<1>. A plate e is pivoted to the plate c<1> and is provided with side grooves e<1> which, with similar grooves c<2> on the plate c<1>, form guides for an angle-shaped sliding plate f , f<1> carrying the pins g. The Specification as open to inspection under Sect. 91 (3) (a) states that the plate e may be dispensed with, and the plate f made in two pieces pivoted together; also, the sockets and pins may be replaced by pins which perforate the papers; this subject-matter does not appear in the Specification as accepted.
Patent GB-717577-A (GB)
Title: Improved rotary valve means for engines
IPC: F01L7/06
Filed: 1951-04-11
Abstract: 717,577. Engine distributing valves; valve gear. POWELL, D. E. June 12, 1952 [April 11, 1951], No. 8352/51. Class 122(2) [Also in Group XXVII] A rotary engine distributing valve 4 mounted on, and spaced from, the engine cylinder wall and held against a stationary head 2, has a passage 6 therein which extends obliquely to the axis of the valve from a central opening in the valve surface adjacent the cylinder wall and alternately co-operates with inlet and exhaust ducts in the head 2, means being provided to prevent the escape of gas between the valve and the cylinder wall and between the valve and the stationary head. The valve is coaxial with the cylinder 1 and is rotated by a driven gear-wheel 10 splined on the valve spindle 5 and axially movable thereon against a thrust bearing 12 mounted on the head 2, by a compression spring 11 whose upper end abuts a nut 13 fixed to the spindle 5. The spring 11 thus causes a continuous ridge 23, which projects from the upper surface of the valve 4 and surrounds the passage 6, to bear against the head 2. Escape of gas between the valve and the cylinder is prevented by sealing rings 24 which, preferably, engage in grooves formed in the lower surface of the valve and in the top of the cylinder 1. Cooling lubricant supplied through a pipe 16 circulates through the valve spindle and the valve, flowing from passages 19 in the wall of the latter to the engine sump. Lubricant flows from the valve interior to the bearing ridge 23 and the sealing rings 24 through bores 20 and 21, respectively.
Patent GB-783303-A (GB)
Title: Improvements in or relating to mounting arrangements
Inventor: LANGSTONE WILLIAM HENRY
IPC: H05K7/14
Filed: 1955-03-23
Abstract: 783,303. Clamps. AUTOMATIC TELEPHONE & ELECRIC CO., Ltd. Dec. 15, 1955 [March 23, 1955], No. 8417/55. Class 44 [Also in Group XXXIX] A unit of electrical equipment 1 is detachably secured to spaced rails 19 of a rack by nuts 17 and clamping pieces 10 which comprise substantially U-shaped collars punched and folded from sheet metal, the clamping force being applied in a direction at right-angles to the plane of the U. The top of folded limbs 13 is made flush with edge 12 and the bottoms of legs 14 are aligned. The hooking action of the hook-shaped portion 18 of the rails and legs 14 of the clamping piece is shown in Fig. 2.
Patent GB-1095008-A (GB)
Title: Process for the catalytic oxidation of propylene
Inventor: KATO TSUNEYUKI
IPC: C07C45/35
Filed: 1966-02-25
Abstract: Acrolein and/or acrylic acid are obtained by contacting propylene at an elevated temperature and in the gas phase with oxygen or an oxygen-containing mixture of gases in the presence of a catalyst of the empirical formula BiaFebPcBdMoeOf wherein a, b, c, d, e and f are the atomic ratio of respective elements constituting the catalyst and a is 0.1 to 12, b is 0.1 to 12, c is 0.1 to 2, d is 0.1 to 4, e is 12 and f is 35 to 83.  The oxidation may be carried out in a fixed bed or a fluidized bed reactor with optional recycling of the products. The catalyst may be used in granular form optionally supported on silica, alumina or diatomaceous earth and may comprise a mixture of oxides of bismuth, iron, molybdenum, boron and phosphorus.  The reaction mixture may contain 0.2 to 4.2 mole of oxygen, e.g. as air, and 0 to 10 moles of water, which may be in the vapour phase, per mole of propylene.  The water may be replaced by or supplemented with nitrogen, argon, carbon dioxide or propane or mixtures thereof. The preferred temperature range is 250 DEG  to 550 DEG  C.ALSO:A catalyst of the empirical formula:  <FORM:1095008/B1-B2/1> wherein a, b, c, d, e and f are the atomic ratio of the elements constituting the catalyst and a is 0.1 to 12, b is 0.1 to 12, c is 0.1 to 2, d is 0.1 to 4, e is 12 and f is 35 to 83 is optionally associated with a carrier and may be prepared by mixing a heated aqueous solution of molybdenum oxide (or ammonium paramolybdate or molybdic acid), phosphoric acid and boric acid acidified with nitric acid with an aqueous solution of a bismuth salt (e.g. bismuth nitrate) and an iron salt (e.g. ferric nitrate), adding the aqueous mixture to a carrier substance, evaporating volatile material, drying the residue and calcining the granulated residue. Alternatively the aqueous mixture may be applied to the carrier by a spray-drying process.  Specified carriers are alumina, diatomaceous earth and preferably silica gel.
Patent GB-1181831-A (GB)
Title: Process for the Production of Mouldings of Low Specific Gravity
IPC: B29C44/00
Filed: 1967-02-22
Abstract: 1,181,831. Moulding expanded materials. COLLO RHEINCOLLODIUM KOLN G.m.b.H. WERK HERSEL. 22 Feb., 1967 [26 Feb., 1966], No. 8523/67. Heading B5A. [Also in Division C3] Mouldings of cross-linked foam plastics of density 0À05 to 0À9 gm./cm.<SP>3</SP> are produced from a reactive composition, e.g. polyurethane, which is introduced into a mould, formed by a male and a femal portion, at a temperature of 10‹ C. or more above that of the mould whereby the composition is cooled whilst expanding and is finally shaped by compression to a reduced volume and under the action of the heat of reaction generated in the cross-linking action. The optimum temperature difference between the mould and introduced mixture reaches a peak of 25‹ C. at a temperature of the composition introduced of 40-60‹ C. The resultant mouldings are produced with non-homogeneously compacted foam throughout the section thereof facilitating the adhesion of in-situ bonded surfaces of wire gauze, sieve mesh, paper, cardboard, perforated or unperforated metal foil, textile fabrics, wood veneers, marble, ceramic, and glass, the adhesion whereof may be facilitated by an intermediate layer of non-woven fabric. An embossed surface may also be produced, e.g. with wood veneers, textile materials, metal, paper, P.V.C., and polyethylene foils by the use of removable mould inserts. Embedded metal, wood or plastics reinforcements, or hinges and fastening eyes, may be incorporated. The laminated structures produced may be utilized for floor coverings, furniture parts, building partitions, tiles, window sills, roof tiles, with or without reinforcement.
Patent GB-695741-A (GB)
Title: Optically active -a-phenyl-serine compounds and process for the manufacture thereof
Filed: 1951-04-13
Abstract: The invention comprises L-threo-b -phenylserine and its N-acyl derivatives, and salts thereof, including salts of the N-acyl compounds with optically active bases, and the manufacture of these compounds and of aliphatic alcohol esters of L-threo-b -phenylserine by acylating DL-threo-b -phenylserine or an alkyl ester thereof at the amino group, hydrolysing the ester group if present, reacting the resulting DL-threo-N-acyl-b -phenylserine or an alkali metal salt thereof with an optically active base or a salt thereof respectively, separating from the mixture of diastereoisomeric salts the L-threo-N-acyl-b -phenylserine salt, if desired decomposing the latter, further, if desired, hydrolysing off the N-acyl group, and finally, if desired, esterifying the L-threo-b -phenylserine with an aliphatic alcohol.  Preferably acylation is effected with acetic anhydride, quinine is used as the optically active base, p  and the separation of the diastereoisomers is effected by fractional crystallization from water, from which the desired isomer separates first.  An advantageous procedure consists in reacting the sodium salt of DL-threo-N-acetyl-b -phenylserine with only half a molecular proportion of quinine hydrochloride in warm aqueous solution, whereby, on cooling, the quinine salt of the L-form crystallizes out and the sodium salt of the D-form remains in solution.  In examples: (1) DL-threo-b -phenylserine is esterified by suspending it in ethanol and passing in hydrogen chloride, the ester is liberated from the resulting hydrochloride by the action of ammonia and acetylated with acetic anhydride in glacial acetic acid, the N-acetyl ester is hydrolyzed with dilute caustic soda followed by treatment with hydrochloric acid, the DL-threo-N-acetyl-b -phenylserine is reacted with quinine in hot water and the quinine salt of the L-threo acid is crystallized, decomposed with aqueous alcoholic caustic soda and hydrolysed with hydrochloric acid; (2) DL-threo-b -phenylserine is acetylated with acetic anhydride in aqueous caustic soda, the sodium salt of the N-acetyl compound is reacted with half a molecular proportion of quinine hydrochloride, and the quinine salt of the L-threo acid is crystallized, decomposed with aqueous caustic soda in the presence of chloroform and hydrolysed with hydrochloric acid; (3) L-threo-b -phenylserine is esterified by treatment with ethanolic hydrochloric acid, the ester being liberated from its hydrochloride by the action of ammonia.
Patent GB-765643-A (GB)
Title: Improvements in or relating to electric contact convertors
IPC: H02M1/26
Filed: 1955-03-25
Abstract: 765,643. Converting; synchronous motors. SIEMENS-SCHUCKERTWERKE AKT.-GES. March 25, 1955 [March 27, 1954], No. 8845/55. Classes 35 and 38 (2). In an electric contact converter whose contacts are actuated by a synchronous motor the instant of opening of the contacts is regulated, e.g. kept at the centre of the spring step, by applying a signal derived from a winding on a switching choke, Fig. 1 (not shown) to an amplifier 16 the D.C. output iz from which is circulated in two exciting windings 12, 13 of the synchronous motor. This weakens and strengthens respectively the current i in windings 12, 13 which is derived from D.C. source 14 and passes also through exciting winding 11. Thus the effective magnetic axis and thereby the phase position of the rotor of the synchronous motor are changed so that the contact opening instant is varied by the signal. The angular range of operation is increased by the effect of resistor 18 in diverting current i through winding 12 with zero signal. Resistor 17 blocks amplified current from passing through source 14. When the exciter windings are on the stator the controlling and main circuits may be separated by connecting windings 11 and 13 in series respectively with separate subdivisions of winding 12, Fig. 4 (not shown). Control by varying the division of current between windings 12, 13 by means of a rheostat operated by a signal sensitive oil pressure regulator, Fig. 2 (not shown), is stated to be known.
Patent GB-550540-A (GB)
Title: Improvements in or relating to gyratory crushers
IPC: B02C2/00
Filed: 1941-07-14
Abstract: 550,540. Gyratory crushers. NORBERG MANUFACTURING CO. July 14, 1941, No. 8879. Convention date, July 15, 1940. [Class 59] In gyratory crushers, for relieving the thrust of the mantle caused by the flow or pouring of the metal under crushing impacts the mantle 28 with inner and outer generally conic surfaces is provided at its upper edge or end with a flange 35 extending from one of such surfaces and overhanging the adjacent portion of the mantle, the flange being separated from such adjacent portion by a channel 34 extending a substantial distance through the mantle from the surface thereof opposite to that from which the flange extends. A locking nut or ring 37 bears upon the flange preferably between its ends and well within the junction of the flange and the mantle. The flange may extend from the inner surface of the mantle instead of from the outer surface as shown, and the channel 34 may be V-shaped.
Patent GB-614161-A (GB)
Title: Elements for erecting portable wooden buildings
IPC: E04B1/18
Filed: 1945-04-10
Abstract: 614,161. Composite blocks. BERGVALL, K. L., and DAHLBERG, E. E. April 10, 1945, Nos. 8886 and 8887. Convention dates, April 6, 1944, and Sept. 1, 1944. [Class 145 (ii)] [Also in Group X] Wall and' floor elements for portable wooden buildings are all of the same width, i.e. equal to or twice their thickness and that of the partition walls, and are formed as trunks of rectangular cross-section and made up of opposite side walls shown as three plies 1, 2, 3, glued together, and cross-bracings 4. Tongues 6 and grooves 7 along the longitudinal edges of the walls for engagement with adjacent elements may be formed by displacement of the middle ply. The internal space is occupied by insulating material 9 and the space between adjacent elements by cushions 8 leaving side air channels 10 which may accommodate electric wires &c. Extensions 12 of the tongues 6 at spaced points or loose dowels 12a may act as connectors. In erecting a wall, the elements are successively dowelled to a supporting beam and then to a beam laid at the top so that they are secured at one top and one bottom point.
Patent GB-417432-A (GB)
Title: Improvements in installations for applying caps to bottles, jars and like vessels
IPC: B67B3/02
Filed: 1934-03-21
Abstract: 417,432. Applying caps to bottles &c. TENNANT, W. J., 111, Hatton Garden, London.-(Crown Cork & Seal Co., Inc.; Highlandtown, Baltimore, U.S.A.) March 21, 1934, No. 8916. [Class 125 (ii).] Apparatus for capping bottles, jars, and like vessels comprises a capping machine driven from a source of power through a clutch, reciprocatory feed mechanism for advancing bottles into position for capping, and a device movable with the feed mechanism for engaging the clutch when bottles attain the capping position in advance strokes, the clutch being disengaged during reverse strokes. As shown in Figs. 1 and 2, a capping machine 10 is provided with a continuously running motor 11 and clutch mechanism 12. When the clutch is thrown in, reciprocating capper elements 14 place caps on the bottles beneath them. The lever mechanism for operating the clutch consists of a rod 15, pivoted lever 16, rod 17, and bell-crank lever 18 with an arm 23 which projects into the path of the bottle feeding mechanism and adjacent a shelf on the capping machine. The bottles are moved along a table 26 with a guide 27 by fingers 30 attached to a reciprocating rod 28. The bottles are moved from the table 26 to a shelf 34 on the capping machine and to another table 33. The rod 28 carries a lug 35 with adjustable bolt 36 which engages the arm 23 of the bell-crank lever 18 and thereby operates the clutch of the capping machine.
Patent GB-1010127-A (GB)
Title: Pinch valve
IPC: B65B1/42
Filed: 1964-03-03
Abstract: 1,010,127. Pneumatic conveyers. BLACK PRODUCTS CO. 'March 3, 1964 [July 16, 1963], No. 8971/64. Heading B8A. A pinch valve suitable for regulating the flow of granular, flaky or powdered material comprises a pair of bell-cranks 16 pivotably mounted at 17 to brackets 15 which in turn are connected to a support 10, each bell-crank consisting of a short upper arm formed by spaced triangular plates 18 and a lower arm or pinch rod 19. Mounted between each pair of plates 18 on pins 20 is a roller 22 which contacts a cross-head 23 which in turn contacts the piston 13 of an air or other fluid cylinder 12, springs 21 being provided between the pins 20 to bias the valve to the open position. In operation, when fluid is admitted to the cylinder the consequent displacement of the cross-head causes the bell-cranks to pivot about the pins 17 and the pinch-rods compress the pinch-tube 11 to an extent governed by the size of the feet 24 located at the end of each pinch-rod, which feet are of a size such that spacing between the pinch-rods when parallel is not greater than twice the wall thickness of the tube. In a modification, which allows pinchtubes of varying diameter to be used, the holes through which the pins 17 pass are slotted and the underside of the cross-head 23 is provided with a sloping cam surface. Specification 881,776 is referred to.
Patent GB-1495859-A (GB)
Title: Method of making a multialkali electron-emissive layer
IPC: H01J40/02
Filed: 1975-03-04
Abstract: 1495859 Cathode materials RCA CORPORATION 4 March 1975 [4 March 1974] 8978/75 Heading H1D A cathode is formed by exposing a Sb layer sequentially to K, Na and Cs vapour the layer being maintained above 200‹ C. during exposure to the Cs. The method allows multialkali photocathodes to be formed when space or geometry prevents a uniform layer of Sb being vapour deposited in a discharge tube. The layer on a support is mounted in a photomultiplier tube and is maintained at 240‹C. as the vapours are successively released from sources within the tube. In each case exposure continues until the photosensitivity reaches a given or peak value. The cathode may be secondary electron emissive.
Patent GB-1198787-A (GB)
Title: Tire Stud
Inventor: CARLSTEDT RAGNAR L
IPC: B60C11/16
Filed: 1969-02-19
Abstract: 1,198,787. Tyre studs. KENNAMETAL Inc. 19 Feb., 1969, No. 8988/69. Heading B7C. [Also in Division C7] In a tyre stud 12 comprising a hard wearresistant pin 14 protruding from a tubular body having a shank 16 and head 18, the body is formed of sintered stainless steel powder which has a lower heat conductivity than the solid metal. The stainless steel powder contains 13% Cr and 12% Ni by weight. In a modification the body is formed of hardenable stainless steel containing 12% Cr, 1% Mn and 1% C by weight and hardened by quenching at 900‹ F. in a liquid medium such as castor oil or silicone oil. The pin 14 and the body bore 22 taper inwardly from the end opposite the head, the pin 14 being driven into the bore to such an extent that it has an interference fit with bore 22. Reference has been directed by the Comptroller to Specification 1,063,936.
Patent GB-1381530-A (GB)
Title: Expansion joint
IPC: E01D19/06
Filed: 1972-02-28
Abstract: 1381530 Expansion joints D S BROWN CO 28 Feb 1972 [8 March 1971] 9074/72 Heading EIB An expansion joint between two bridge deck sections 11 comprises elongated edge members 12 attached to the concrete, intermediate longitudinal rails 42, 43 slidably supported by transverse bars 60 passing through aligned rows of elastomerically lined apertures therein, springs 46 holding the rails and edge members in spaced relationship and an elastomeric cover (not shown) covering the whole joint and being held in position by engaging undercut grooves in the top of the rails and the edge members. Each longitudinal rail comprises a plurality of shorter sections 42a and 42b interconnected by splice plates 49. The elastomeric cover may be one piece or multiple. The edge rails 43 are connected to the edge members 12 by longitudinally spaced pairs of T-bars 30 and 31.