baber/WOPTO huggingface dataset:
Patent GB-1307320-A (GB)
Title: Process for the separation of sulphides
IPC: B03D1/06
Filed: 1971-01-18
Abstract: 1307320 Froth flotation ANACONDA CO 18 Jan 1971 [20 Jan 1970] 2315/71 Heading B2H Molybdenum sulphide is separated and recovered from copper ore concentrates containing molybdenum sulphide and copper sulphide by conditioning an aqueous pulp of the copper ore concentrates with a collector for molybdenum sulphide and a Nokes-type depressant for copper sulphide, and subjecting the conditioned pulp to froth flotation in which a gas, which is non-reative with the Nokestype depressant, is employed as the frothproducing gas to effect recovery of a molybdenum concentrate in the flotation overflow and recovery of a copper concentrate in the flotation underflow while maintaining the e.m.f. of the aqueous pulp above a predetermined value to maintain the effectiveness of the depressant. A Nokes-type depressant is defined as a reaction product of two or more inorganic compounds, said reaction product containing bivalent sulphur, a caustic cation, and phosphorus, arsenic or antimony. The froth-producing gas may be nitrogen, Freon (Trade Mark), an inert gas such as helium or argon, or mixtures thereof. The aqueous pulp may contain a sufficient amount of the depressant for copper sulphide to maintain the e.m.f. of the pulp above-200 millivolts when measured with a platinum electrode with reference to a standard GP (calomel) glass electrode. Examples are given.
Patent GB-304477-A (GB)
Title: Improvements connected with water tube boilers
IPC: F22B37/22
Filed: 1928-01-25
Abstract: 304,477. Horsman, H. S. Jan. 25, 1928. Water-tube boilers having a divided steam and water drum or more than one steam and water drum have steam connectors or passages affording a resistance which causes a pressure loss of not less than 1/10 lb. per square inch when the evaporation of the boiler is 8 lb. per hour per square foot of external tube surface. Excessive differences of level in the drums are thus avoided. The resistance may be provided by a ferrule F or baffles H at the end or ends of the connector D or by an orifice plate or screw-down or flap valve interposed in the connector or passage.
Patent GB-763809-A (GB)
Title: Improvements in or relating to a method of manufacturing a non-metallic magnetic core having a substantially rectangular hysteresis loop
IPC: C04B35/26
Filed: 1955-01-27
Abstract: 763,809. Magnetic compositions. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Jan. 27, 1955 [Jan. 27, 1954], No. 2494/55. Drawings to Specification. Class 38 (2). A magnetic core is made of a material with a substantially rectangular hysteresis loop and low coercivity and having the formula where x lies in the range 0.1-0.8, y is in the range 0-0.5 and x+y # 0.2, which material is made by heating a mixture of nickel, manganese and iron compounds in an atmosphere containing at least 20 per cent by volume of oxygen at 1400-1475‹ C. Nickel and manganese carbonates and ferric oxide are ground in alcohol preheated in air at 900‹ C., cooled and reground in alcohol, moulded and sintered in air or oxygen at 1450‹ C. Figures to indicate the rectangularity of the hysteresis loops of several substances having different values of x and y are given.
Patent GB-575457-A (GB)
Title: Process for treating abomasum for manufacture of rennet
IPC: C12N9/64
Filed: 1944-02-10
Abstract: Rennet is manufactured from the abomasum of adult as well as suckling ruminants by separating the glandular mucous layer from the stomach wall, dividing it into small pieces and then dehydrating it for 6-10 hours at 37 DEG  C. in trays or rotary drums. Chymosin or rennin can be separated from this material by extraction with a suitable solvent.
Patent GB-706738-A (GB)
Title: Improvement in xenyl and phenyl orthosilicates
Inventor: FANO ETTORE DA
IPC: C07F7/04
Filed: 1952-01-30
Abstract: The invention comprises a mixture of tetraphenyl orthosilicate, tetra-xenyl orthosilicate and mixed tetraphenyl-xenyl orthosilicates selected in such proportions that there are present in the mixture from 0.4 to 3.6 xenyl radicals and from 3.6 to 0.4 phenyl radicals (the total proportion of the two radicals being 4) for each silicate radical.  The o-xenyl radical is the preferred xenyl radical.  The mixture may be prepared by any of the following methods:-(a) the reaction of a phenylphenol and phenol with silicon tetrachloride, the resulting mixture being heated to expel hydrogen chloride; (b) the reaction of phenylphenol with silicon tetrachloride followed by the reaction of phenol and any additional silicon tetrachloride with the reaction mixture; (c) heating tetra-phenyl orthosilicate and a phenylphenol or tetra-xenyl orthosilicate and phenol; (d) heating a mixture of tetra-phenyl and tetra-xenyl orthosilicates, if necessary in the presence of a compound having chlorine linked to silicon and which readily decomposes on contact with water, e.g. a monochlorosilicate of isopropyl or isobutyl alcohol or phenol, or an analogous di- or tri-chlorosilicate, or a silicon oxychloride such as hexachlorodisiloxane.  In the examples a number of mixtures of the above orthosilicates are prepared containing the phenyl and o-xenyl radicals.
Patent GB-1371312-A (GB)
Title: Titration device
IPC: G01N31/16
Filed: 1973-01-18
Abstract: 1371312 Burette MERCK PATENT GmbH 18 Jan 1973 [2 Feb 1972] 2590/73 Heading B1X A titration device comprises a calibrated piston syringe 1 connected via a sealing member 2 with a dropping tube 5 which is fixed in a closure cap 3 for a container 4, said dropping tube having a take-up volume which is approximately equal to or greater than the take-up volume of said syringe. The container may contain a wiper 8 to remove liquid from the outside of the dropping tube as this is withdrawn from the container.
Patent GB-100659-A (GB)
Title: Improvements in Valve Operating Mechanism for Internal Combustion Engines.
Inventor: REEVES ARTHUR WILLIAM
IPC: F01L5/06
Filed: 1916-02-24
Abstract: 100,659. Reeves, A. W. Feb. 24, 1916. Valves; valves-gear.-Cylindrical beat valves of the type described in Specification 101,240 are actuated respectively bv a pair of rocking-levers c', d' having bifurcated ends c, d which engage the undersides of lugs joined on extensions of the valves. The ends c<1>, d<1> are depressed in any convenient manner by cams to raise the valves into their open positions. Springs e. f return the valves to their seats.
Patent GB-139859-A (GB)
Title: Improvements in or relating to pumps
IPC: F04B9/12
Filed: 1919-02-05
Abstract: 139,859. Clarke, H. Feb. 5, 1919. Regulating delivery. - A timing- device for pumps em ployed in sprinkler installations or the like comprises a cylinder e adapted to receive water from the delivery side of the pump and containing a piston e<1> which, when forced up to the position shown in Fig. 2, closes a valve b in a by-pass pipe a which can deliver enough steam to keep the pump working slowly. An adjustable dripcock h<1> can be set to empty the cylinder in any given time, say four hours, at the end of which period the valve b is fully open and the pump is operated again.
Patent GB-472149-A (GB)
Title: Improvements in and relating to washing machines
IPC: D06F23/04
Filed: 1937-01-30
Abstract: 472,149. Washing and drying machines. BRITISH THOMSON-HOUSTON CO., Ltd. Jan. 30, 1937, No. 2783. Convention date, Jan. 31, 1936. [Class 138 (ii)] [Also in Groups II and XXIV] In a washing and centrifugal drying machine the washing is effected by the oscillation of an agitator 46 within a receptacle 33 which is rotatably mounted about the shaft 10 of the agitator but which remains stationary, due to its inertia, during the oscillation of the shaft. When, however, the shaft is rotated unidirectionally and at a sufficiently high speed for centrifuging, a centrifugal clutch comes into operation to rotate the receptacle in unison with the shaft. The clutch comprises two shoes 52 held by means of split rings 54, during washing, against a squared portion 53 of a thrust collar 42 keyed to the shaft. On highspeed rotation the shoes swing outwardly and are cammed by the squared portion 53 against the inside of the sleeve 34 secured to the base of the receptacle. The shaft rotates in a spherical or other bearing 17 carried by the top of a sleeve 11. The means for mounting the lower end of the shaft 10 are those described in Specification 452,402.
Patent GB-1040372-A (GB)
Title: Improvements in and relating to the manufacture of welding electrodes
IPC: F26B3/34
Filed: 1964-01-22
Abstract: 1,040,372. Endless conveyers. A. N. BELYAEV and I. S. SHILOV. Jan. 22, 1964, No. 2827/64. Heiding B8A. [Also in Division G3 and H5] The coating on arc welding electrodes is dried and hardened by inductively heating the electrodes in a chamber 1 and then cooling them at 2 in a single apparatus. The inductors comprise zig-zag bars. The electrodes are conveyed by duplex chains 3 and are attached by fixed clamps 11 at one side and spring-loaded ones 12 at the other, Figs. 2, 3 (not shown). They are loaded and unloaded at drums 5, 6 having slots for the electrodes, and cam-operated levers compress the clamp springs at appropriate points to grip or release the electrodes. It is stated that the electrodes can alternatively be positioned vertically.
Patent GB-769529-A (GB)
Title: Improvements in and relating to the manufacture of pistons
IPC: B22D19/00
Filed: 1952-04-25
Abstract: 769,529. Making pistons; casting composite articles. DAUB, R. April 25, 1952 [May 10, 1951], No. 2848/56. Divided out of 769,528, [Group XXVI]. Classes 83 (1) and 83 (2). A method of making a composite piston comprises providing a metal ring 41, Figs. 1, 3, formed on its upper and lower edges with integral circumferentially-spaced lugs 40 which project inwardly, casting light metal on to the ring to form the body of the piston with the lugs 40 embedded therein but leaving the ring 41 exposed externally of the piston, and thereafter machining said piston to remove said exposed metal ring, Fig. 4, and form a pistonring-groove having upper and lower walls 46, 47 formed by the lugs and intervening areas of light metal. The ring 41 is formed by stamping, rolling and bending from metal strip. In one embodiment, Fig. 5, the ring 49 with inwardly projecting lugs 40<SP>1</SP>, has three oft he lugs formed with extensions 51 which rest on the bottom of the mould. The piston body is then cast in the mould with the crown at the bottom. This crown may be subsequently drilled to a slight depth at each extension 51 and plugged and smoothed. In another embodiment, Fig. 7 (not shown), the ring is formed in halves. In another embodiment, Fig. 8 (not shown), a number of superposed rings are provided and connected together by integral lugs. The embedded lugs are of harder metal than the piston body.
Patent GB-802560-A (GB)
Title: A process for recovering glutamic acid values from a fermentation residue
IPC: C12F3/10
Filed: 1957-01-28
Abstract: Glutamic acid is produced from fermentation residues such as vinasse and schlempe by hydrolysing the glutamic acid precursors with sufficient alkaline earth oxide or hydroxide and alkali metal salt of an inorganic acid, whose alkaline earth salt is less soluble than the oxide or hydroxide, so that the pH of the reaction mixture is not less than 12.5, preferably not less than 13, separating solids and recovering glutamic acid from the liquor.  The alkali metal salt is added preferably in amount equal to 1 to about 1.2 equivalents of the alkaline earth oxide or hydroxide; suitable salts are, e.g., sodium, potassium and lithium carbonates, sulphites, bicarbonates and bisulphites.  A preferred mixture is calcium hydroxide and sodium carbonate.  The hydrolysis is carried out at a temperature above 60 DEG  C., preferably between 60 DEG  and 100 DEG  C., for a period of at least 2 hours and preferably about 6 hours.  After filtration, glutamic acid is recovered from the filtrate by conventional procedures.  In a preferred embodiment, the pH of the filtrate is adjusted to a value of 5-7, and a 5-15 per cent aqueous tannin solution added, in amount of at least 10, preferably at least 25, pounds per ton of solids in the starting material.  The mixture is agitated for at least 15 minutes, filtered and the filtrate treated by conventional procedures to recover glutamic acid.  All precipitates are washed with water, the washings being recycled with fresh starting material.  In place of tannin, other suitable reagents include alkali lignin, crude tannins, pure or impure tannic acid, phlobotannins, gallotannic acid, digallic acid, and mono- and poly-galloylglucose.
Patent GB-593036-A (GB)
Title: Modified olefinic polymers
IPC: C08F8/34
Filed: 1945-02-06
Abstract: An olefin or mixture of olefins having 2-10 C atoms per molecule is polymerized to a product of a molecular weight of 1000 or more and the polymer treated in solution in a chlorine-resisting solvent with a mixture of sulphur dioxide and chlorine in a molar proportion of at least 2 : 1, and the resulting sulphonyl chloride is reacted with an organic compound having an -OH, -SH, -NH2, -CONH2 group or a quinonoid compound.  Olefins specified are isobutylene, ethylene, propylene, butadiene alone or with styrene or acrylonitrile; and as solvents carbon tetrachloride, chloroform, ethylene dichloride, carbon disulphide, carbon oxychloride and analogous selenium and tellurium compounds are specified.  The sulphochlorination may be carried out under pressure and aided by actinic light or the presence of iodine or lead tetraethyl.  The reactive organic compounds specified are ethylene glycol, phenol, aryl or alkyl saturated or unsaturated alcohols, aryl or alkyl mercaptans, dimercaptans and diethylene triamine.  In example III, the sulphonyl chloride of a "C4 cut" polymer is reacted with phenol and then treated with formaldehyde and aluminium chloride.  Reaction of a sulphonyl chloride with an unsaturated alcohol may be followed by treatment with quinone dioxide, a nitroso compound or a dithiocarbamate.  The modified polymers may be used as softeners with natural and synthetic rubbers or compounded with dyes, pigments, copal, beeswax, carnauba, ozokerite, candelilla, japan, montan or paraffin waxes, polyindene, polycoumarone, polyvinyl chloride, polyvinyl acetylene, polyacrylates, cellulose ethers and esters, polystyrene, polyethylene, factice, ester gums, phenol-aldehyde resins and chlorinated rubber.  Specification 542,414 is referred to.ALSO:Natural and synthetic rubbers may be softened by compounding therewith a modified olefin polymer obtained by treating a solution of a polymer or copolymer of an olefin having 2-10C. atoms per molecule with sulphur dioxide and chlorine simultaneously in molar ratio of at least 2:1 and reacting the sulphonyl chloride with an organic compound containing an -OH, -SH, -NH2, -CONH2 group, or a quinonoid compound (see Group IV).  Synthetic rubbers specified are polychloroprene, isobutylene-butadiene copolymer, and copolymers of butadiene with styrene or acrylonitrile.  Chlorinated rubber may also be compounded with the modified polymer.
Patent GB-1386301-A (GB)
Title: Formamidines pesticidal herbicidal and plant growth regulating compositions and methods of using them
IPC: C07C275/56
Filed: 1972-01-21
Abstract: 1386301 Plant growth regulation using formamidines CIBA-GEIGY AG 21 Jan 1972 [22 Jan 1971 16 Dec 1971] 3045/72 Heading C1B [Also in Division C2] Plant growth regulant compositions comprise as active ingredient the compounds of a general formula wherein R 1  to R 5 , independently of each other, represent a hydrogen, fluorine, chlorine, bromine or iodine atom; an alkyl or alkoxy group each having not more than 4 carbon atoms; or a trifluoromethyl or nitro group, R 6  represents a hydrogen atom, an alkyl group having not more than 4 carbon atoms, or an alkenyl or alkinyl group each having 3 or 4 carbon atoms, R 7  represents a hydrogen atom, an alkyl group having not more than 12 carbon atoms, an alkenyl group having 3 or 4 carbon atoms, a naphthyl group, an amino group, an alkylamino group having not more than 14 carbon atoms, an alkenylamino group having 3 or 4 carbon atoms, a di-alkyl-amino group having not more than 4 carbon atoms per alkyl moiety, an alkoxy group having not more than 4 carbon atoms; or phenoxy or 4-chloro-2-methyl-phenoxy group or a group of the Formula Ia or Ib R 8  to R 12 , independently of one another, have the meanings given above for R 1  to R 5  and R 13  represents a hydrogen atom or an alkyl group having not more than 4 carbon atoms and X represents an oxygen or sulphur atom.
Patent GB-142564-A (GB)
Title: Improvements in ocean-going vessels
IPC: B63B39/06
Filed: 1919-02-07
Abstract: 142,564. McRae, F. A. Feb. 7, 1919. Protecting; sinking, preventing.-The hull of a vessel of relatively broad beam converges downwards from the water line to present a sharp and deep keel. The state rooms &c. are all above the water line, and a hold for the engines &c. is provided beneath the main deck. The hull beneath the water between the external plates and the hold 17 is filled with a cementitious substance to protect against torpedo attack. The bulkheads are of hollow tubes, the spaces between being filled with material consisting of 85 per cent cork dust and 15 per cent cement, mixed with tar pitch or oil.
Patent GB-1208873-A (GB)
Title: Apparatus for grinding an external surface of revolution
IPC: B24B53/00
Filed: 1969-01-20
Abstract: 1,208,873. Grinding. BRYANT GRINDER CORP. 20 Jan., 1969 [24 Jan., 1968], No. 3084/69. Heading B3D.  A machine for finish grinding a revolving workpiece to a precise dimension comprises a rotatable work-holding means 30 for receiving a rough workpiece 24, a rotatable dressing tool 32 of size and shape similar to a finished workpiece, a grinding wheel assembly 14 slidably mounted for feed along a line 15 passing between the axes of rotation of the work-holding means and dressing tool the grinding wheel 18 being so disposed that during its feed it first contacts the rough workpiece and reduces its size to the desired dimension until the wheel also contacts the dressing tool, all further feed serving to reduce the grinding wheel diameter without further reduction in size of the finished workpiece. Rough workpieces 24 are fed by a shoot 22 to a station 26 from which they are conveyed by a pivoted arm 28 to the work-holding means 30 comprising a magnetic chuck, the workpiece being slidably supported on self-aligning shoes 56, 57; finished workpieces are carried by the arm 28 to a discharge shoot 34 and collector 38. The grinding-wheel is advanced and retracted along a line 16 and the workpiece is disposed during grinding a distance 51 above the feed line equal to the distance 52 that the rotatable dressing tool, which is coated with diamond grit, is disposed below the feed line. As the grinding- wheel is fed along line 16 it contacts the workpiece which initially has a size 24, Fig. 6a, and reduces it to the finished size 25 at which time it engages the dressing tool so that the grinding wheel is dressed without further reduction in size of the workpiece which is subject to sparkout. The dressing tool is mounted in a member 40 and rotatably driven by a motor 41. The member can be adjusted about a pivot 44 by movement of a tapered rack 48 by a handle 50. The grinding wheel 18 is driven by a belt 71, Fig. 11, from a motor 72 and its shaft 69 is carried by a member 74 movable along a guideway 75. A lead-screw 76 is connected to member 74 and engaged by a threaded gear 78 rotatable by a rack 80 driven by a piston-and-cylinder unit 81, 82 to a position determined by an adjustable screw 91 engaging a limit switch 88 which is mounted on a block 94 adjustable by a mechanism 90. The lead-screw 76 can be adjusted by a compensator including a hand wheel 85, spray clutch and cylinder mechanism 87 and gear 86, the compensation being in one direction only to take up for dressing. The axes 52, 53 Fig. 4, of the workpiece 24 and dressing tool 32 may be parallel when grinding profiled workpieces or inclined at equal angles, Fig. 9, when grinding part-spherical workpieces, such as ball cages for constant velocity joints.
Patent GB-158557-A (GB)
Title: Improvements in automatic photographic apparatus
IPC: G03B17/53
Filed: 1921-01-25
Abstract: 158,557. Zema, D. Jan. 26, 1920, [Convention date]. Coin-freed apparatus.-Relates to a coin-freed automatic machine having several slots into any one of which a coin can be inserted for obtaining a photograph of a desired type, as selected from specimens exhibited adjacent to each slot, and in which the insertion of the coin causes the displacement into position for the exposure of one of several objectives of different focal lengths. According to the invention, the coin, during its passage through the slot, completes an electric .circuit containing three relays, which effect (1) the displacement of the selected objective into operative position, (2) the obstruction of the coinslots, and (3) the closure of a circuit containing a motor, which operates gearing to restore the objective to its initial position, and to close circuits of relays which break the motor circuit and remove the obstruction from the coin-slots. In the form shown, the machine has eight slots 1 to 8, Fig. 1. The insertion of a coin 37 into slot 2, for example, closes for a short period a circuit containing relays h, 42 and 40. The relay h withdraws a pawl 27, Fig. 2, engaging a notch in a rod 18 supporting a frame 15 carrying the objective 52 corresponding to slot 2, and allows the objective frame to fall into position in front of the shutter 59. The relay 42 releases the pivoted armature of an inactive relay 49; this armature falls and causes a slotted plate 50 suspended at its end to obstruct all the coin slots. The relay 40 closes at 35, 36 the circuit of a motor 14 which, through belt and toothed-wheel gearing 61, 25, 23 drives a toothed sector 19 engaging teeth on the rod 18, so that the objective frame 15 is raised - again until the pawl 27 re-engages its notch. At the end of the rotation of the wheel 25 a, projection 51 mounted thereon closes a switch 9 completing the circuit of relays 46, 49, which cause the motor circuit to be broken, and the plate 50 to be raised to free the coin-slots. The various objectives are arranged one behind another in a casing 16, and the pawl 27 holding each is wired to the corresponding relay g to p. The Specification as open to inspection under Sect. 91 (3) (a) comprises also, in the same machine, means whereby (1) after a coin is inserted, a ticket is delivered which the client inserts in another slot to start mechanism for developing the film and for printing, mounting, and delivering the photographs, (2) the negative is delivered on inserting a coin into a special slot, (3) backgrounds are unrolled when certain slots are selected, (4) the diaphragm of the shutter is controlled in accordance with the strength of the external light, (5) lamps are illuminated when exposure in artificial light is desirable, (6) gramophones are actuated to issue instructions and information to the client, and (7) a jet of water is discharged to ensure that the client is at the required distance from the apparatus. This subjectmatter does not appear in the Specification as accepted.