baber/WOPTO huggingface dataset:
Patent GB-1397451-A (GB)
Title: Descaling formulations
IPC: C02F5/14
Filed: 1972-10-09
Abstract: 1397451 Descaling metal surfaces MONSANTO Ltd 11 Sept 1973 [9 Oct 1972]  46402/72 Heading C7E Iron and Cu oxides are removed, e.g. from boiler pipes, using an aq. solution of pH # 7À0 containing an aliphatic phosphonate and an inorganic NH 4  salt. The phosphonate may contain a group  where Y and Y' are each H or C 1-4  alkyl, R and R' are  each H, an esterifying group or a cation (e.g. alkali metal, NH 4 , Zn or an amine cation) such that the compound is water soluble to pH # 7À0, and the C atom is attached to the N of ammonia or an aliphatic mono- or diamine e.g. ethylene or hexamethylene diamine. Specified phosphonates are ammonium 1-hydroxyethylidene-1,1- disphosphonate and ammonium aminotri (methylene phosphonate). The NH4 salt may be the chloride, bromide, nitrate, sulphate, carbonate, persulphate, sulphamate, nitrite, or a phosphate. Other additives include H 2 O 2 , persulphates, sulphites and hydrazine.
Patent GB-1090707-A (GB)
Title: Mitomycin c derivatives
Inventor: MATSUI MASANAO
IPC: C07F9/6561
Filed: 1965-11-05
Abstract: A phosphorus-containing derivative of mitomycin C is prepared by reacting mitomycin C with the reaction product of phosphorus oxychloride and monoethanolamine produced in the presence of an organic base.  The final product contains compounds designated M21 and M22 which might well be reaction products of cyclophosphamide ester chloride and mitomycin C, and which are separated by chromatography on silica gel using methanol-ethyl acetate mixture as eluant.  A therapeutic composition having antiseptic properties comprises a phosphorus-containing derivative of mitomycin C as above, and a carrier for internal or external use.ALSO:The putrifaction of raw fish is inhibited by treatment with a phosphorus-containing derivative of the antibiotic mitomycin C in powder form.  The derivative is produced by reacting mitomycin C with the reaction product of phosphorus oxychloride and monoethanolamine in the presence of an organic base.
Patent GB-1450564-A (GB)
Title: Electrical cut-out device
IPC: H01H9/10
Filed: 1973-10-09
Abstract: 1450564 Automatic circuit-breakers UNELEC 9 Oct 1973 [10 Oct 1972] 47160/73 Heading H1N An electronic cut-out device comprises a circuit-breaker 1 including an actuating member 4 for manual operation of the breaker; a repeating member 20, or 26, which is connected to member 4 so that movement of 4 causes corresponding movement of 20 (Fig. 1) or 26 (Fig. 5) and so that 4 can reclose the breaker only when permitted by movement of number 20, or 26; a holder for a striker-pin type fuse 3 in series with the breaker 1; and a latch bolt 13, or 38, which is acted on by the striker pin 5 to be moved so as to obstruct the repeating member 20, or 26, and inhibit movement thereof in at least one direction such that reclosing of the breaker 1 is prevented until an intact fuse has been fitted in the holder. In the first embodiment the end 16 of latch bolt 13 projects to the right when pin 5 lifts notch 14 off fuse cap 7 (or if there is no fuse present), and shoulders on the bar 13 overlie a loop 19 of repeater 20 when member 4 (and hence 20) are lowered to the reset position (Figs. 3a and 3b, not shown). Thus the bar 13 prevents upward movement of 20 and 4 to reclose the breaker until an intact fuse is fitted to retain bar 13 as shown in Fig. 1b. The projecting end 16 acts as an indicator of a blown fuse, especially useful in a multi-pole assembly (Fig. 4, not shown). In the second embodiment (Fig. 5) the fuse 3 is arranged above the breaker 1 and the latch bolt is a lever 38 pivoted on a shaft 39 loaded by spring 45 to float in a recess 47. Actuation of striker pin 5 pivots lever 38 about one end against a shoulder 48 in the housing such that a foot 48 overlies end 50 of repeater 26 and prevents upward movement of actuator 4 from the open position shown. If the fuse is removed the foot 49 still overlies end 50 since spring 45 then rotates lever 38 counter-clockwise about shaft 39. A stud 40 projects to indicate that a new fuse is required, a light spring 42 allowing it to be manually pushed back without causing lever 38 to unlatch the breaker 1.
Patent GB-1181619-A (GB)
Title: Improvements in or relating to Internally Cooled Pistons.
IPC: F02F3/18
Filed: 1968-10-04
Abstract: 1,181,619. Welding by pressure; making pistons. CATERPILLAR TRACTOR CO. 4 Oct., 1968 [9 Oct., 1967], No. 47242/68. Headings B3A and B3R. [Also in Division F2] An internally cooled piston has a coolant sealed in a cavity in the piston head by means including a friction weld. A piston assembly 35, comprising a crown portion 39 furnace brazed to an annular skirt 37 and to a rod strut 41 having a hollow bowl portion 43 forming with the crown portion a cavity 45, is clamped in a non-rotatable chuck on the tailstock of a friction welding machine, a stainless steel rod 51 machined with a taper 53 is clamped in the rotatable chuck of the welding machine and a sodium-mercury cooling mixture 49 is inserted into the cavity 45 through a filler hole 47 in the rod strut 41 which filler hole has a taper identical to that on the rod 51. The spindle on which the rotatable chuck is mounted carries flywheel weights and is driven by an electric motor through an hydraulic pump and motor until a predetermined velocity is obtained, the motor is disconnected or shut down and the tailstock is moved towards the rotating chuck by a ram so that the rod 51 becomes friction welded in the filler hole 47. The excess rod material is machined away leaving the piston sealed. In a modification the filler hole is provided in the crown portion of a similar piston and is similarly sealed by friction welding a rod therein. A heatresistant deposit is welded over the machined plug. In yet another modification not employing a filler hole the strut member is clamped vertically in the non-rotating chuck, the cooling agent is placed in the bowl of the strut and the crown portion having the skirt already frictionwelded thereto is clamped in the rotating chuck of the friction welding machine and frictionwelded to the strut member to seal the coolant in the piston.
Patent GB-1168652-A (GB)
Title: Improvements in and relating to Retainers for Bearings of the Roller Type.
IPC: F16C33/49
Filed: 1966-10-24
Abstract: 1,168,652. Bearings. TORRINGTON CO. 24 Oct., 1966 [24 Oct., 1965], No. 47558/66. Heading F2A. A roller cage comprises axial circumferentially spaced elements 13 of generally U-shaped crosssection, the limbs 15 of the U having end faces 16 for retainer rollers. In Fig. 3, elements 13 are connected by tabs 12 to an annular rim 11. The cage is formed from a disc of sheet metal by forming a ring of I-shaped openings (18, Fig. 2, not shown), removing the centre of the disc by piercing, and using a forming member to orientate elements 13. The cage is positioned in an outer race (21, Fig. 4, not shown) of U- shaped cross-section, the rollers being inserted into the race with the cage before the second limb of the race is bent over, or the rollers are snapped into the assembled cage. The limbs 15 of the elements 13 extend radially with respect to the axis of the abutting roller. The cage may be used in the bearings of an overrunning clutch.
Patent GB-1041272-A (GB)
Title: Quarternary ammonium nitrites
Inventor: BAIRD WILLIAM
IPC: D06M13/46
Filed: 1962-09-21
Abstract: Quaternary ammonium nitrites of the formula <FORM:1041272/C2/1> wherein R5 represents a C8- 22 alkyl or alkenyl group, R6 and R7 independently represent a C1- 4 alkyl or hydroxyalkyl group, and R8 represents a hydroxyethyl or hydroxypropyl group, are prepared by reacting ethylene or propylene oxide with a nitrous acid salt of a tertiary amine of the formula <FORM:1041272/C2/2> The nitrous acid salt of the tertiary amine is preferably prepared by treating a solution of a strong mineral acid salt of the tertiary amine in a non-aqueous water-miscible solvent with a concentrated aqueous solution of sodium nitrite.
Patent GB-479793-A (GB)
IPC: C10B13/00
Abstract: 479,793. Carbonizing-apparatus. VOGT, A. E. Jan. 27, 1937, Nos. 2411, 2412, and 2413. Convention dates, March 13, 1936, April 23, 1936, and Oct. 3, 1936. [Class 55 (i)] In apparatus for carbonizing fuel in which a number of retorts d of elongated rectangular cross-section are placed stationarily side by side with their long sides adjacent within a heating chamber and spaced apart to form heating gas passages s therebetween, the fuel is inserted into the retorts in containers a through their open tops, the retorts being provided with removable covers g for the latter purpose. Gas outlets f are provided with valves e which are opened or closed, when the covers are in the closed or open positions respectively, by means of interconnecting levers v<11>, v<1> and v. The retorts are externally heated by burners h arranged along the bottom of one longitudinal side of the heating chamber, the gases being withdrawn through similarly arranged flues k on the opposite side of the chamber. Slides i enable the heating to bo regulated, and fins on the retorts increase the heating surface thereof. The fuel containers a may comprise superimposed iron or steel shallow open-topped cases. In a modification, the single case is constituted by a number of small boxes p, Fig. 6, welded together, apertures r being provided in their bases to facilitate removal of the coke. The boxes p may be made from drawn metal or from strip bent and welded at the joint in which latter instance the bases of the boxes are open. In another modification, the fuel containers each comprise a single subdivided box built up from prismatic tubes l, Fig. 8, welded together at their narrow sides and preferably comprising a double row of such tubes. These containers are closed by common upper and lower plates 2, 5. The distilling temperature is preferably below 530‹ C.
Patent GB-1216354-A (GB)
Title: Ball valves
Inventor: PRIESE WERNER KLAUS
IPC: F16K5/06
Filed: 1968-10-10
Abstract: 1,216,354. Valves. HILLS-McCANNA CO. 10 Oct., 1968, No. 48087/68. Heading F2V. The housing 12 of a rotary ball valve 10, which is adapted for use in a corrosive environment, has formed therein a ball-accommodating chamber 14 and a laterally extending aperture 32, which aperture communicates with the chamber, is so dimensioned as to facilitate the withdrawal therethrough of the ball 20, and is closable by a cap 40. The cap is composed of a bonnet 36 which carries a soft metal sealing element 72, and an annular ring 42 which is sealed with respect to both the aperture and the bonnet, the bonnet and ring defining therebetween a lubricant-containing chamber 90 and being urged towards each other by a series of threaded studs 44 and associated nuts 48, such mutually directed displacement of the bonnet and cap serving to increase the force with which sealing ring 72 is urged against a layer 82 of stellite and hence to increase the degree of sealing between the bonnet and aperture 32. The lower co-acting threads 94, 96 of the bonnet and of each of the studs respectively, are made relatively fine and tight fitting, the upper co-acting threads 102, 118 of each of the studs and associated nuts respectively, are formed relatively coarse and loose fitting and each stud-receiving aperture in the ring 42 is made of greater diameter than the corresponding stud such that lubricant may enter by capillary action between the threaded portions of each nut and stud and between the bonnet and each stud and so prevent the components from freezing together as due to corrosion. In a modification (Fig. 5, not shown) the studs and nuts can be replaced by cap screws (130). In either of the embodiments, the ball shaft 58 is made integral with the ball 20, and is sealed with respect to the bonnet 36 by two glands 62, 64 whose degree of compression is adjustable. The ball is sealed with respect to the chamber 14 by two seats 24, 26 which are retained between the ball and associated seatsupports 28 and 30, respectively.
Patent GB-1372101-A (GB)
Title: Magnetic video recording and reproducing apparatus
IPC: G11B15/66
Filed: 1971-10-18
Abstract: 1372101 Automatic threading video recorder MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 18 Oct 1971 [19 Oct 1970 27 Oct 1970 18 Dec 1970 29 Dec 1970] 48334/71 Heading G5R In a magnetic tape video recorder of the type in which the tape has to pass, in one turn of a helix, completely around a cylinder 1, Fig. 1, housing a single rotating head 2, a guide ACB having a cross-section as shown in Fig. 3, is provided to effect automatic threading of the tape. In operation the tape leader, which is constructed from moderately rigid material, is manually inserted into the end A of the guide. The leader is then driven forwards by rotation of the magazine reel 8 until eventually it emerges from the other end B of the guide to be gripped by a capstan 11 and pinch roller 10 and fed to a take-up reel (not shown). The width of the leader 4, Fig. 4, is such that it just fits into the tape guide 3, Fig. 3. However, the width of the tape 5 is sufficiently narrow for the tape to fall through the slot 6 in the guide on to the central cylinder 1 in the desired position. Ideally the axis of the tape guide is slightly inclined to the axis of the cylinder 1 so that there is no gap between the adjacent portions of tape on the cylinder, and preferably the tape guide is shaped (Fig. 5, not shown) so that the tape and leader may easily be rewound.
Patent GB-1400628-A (GB)
Title: Electrical switches
IPC: H01H1/24
Filed: 1972-10-23
Abstract: 1400628 Retractive switches ADDMASTER CORP 23 Oct 1972 [22 Oct 1971] 48798/72 Heading H1N In a push-button key switch, the moving contact comprises an expandable conducting toroidal spring 27, Fig. 1, surrounding a conical actuator portion 25 of the key 21 and resting on an insulator disc 16 whereby on depression of the key 21 the spring 27 is expanded over the edge 28 of the disc 16 to bridge two or more contacts 13, 14. In the particular embodiment the contacts 13 14, are part of a printed circuit board 12 having an enlarged aperture 15 for a hub 16 of the disc 17 which acts as a guide for a reduced end portion 19 of the key 21. The conical portion 25 may be convex (as shown) or have straight or concave sides depending upon the feel characteristics required on the button 21. Additional guide supports on the button is provided by a rectangular section hole 23 in a base member 24 co-operating with a rectangular guide portion 20 of the button. The arrangement is stated to avoid contact bounce and unnecessary wear on the contacts 13, 14, 27 which are flash coated with gold, platinum or other precious metal to a thickness of 0À00050 inches.
Patent GB-1433750-A (GB)
Title: Gas turbine engines building elements
IPC: F02C3/10
Filed: 1972-10-24
Abstract: 1433750 Gas turbine engines; turbines LUCAS INDUSTRIES 22 Oct 1973 [24 Oct 1972] 48845/72 Headings FIG and FIT The invention relates to a gas turbine engine of the kind comprising a separate power turbine which has associated therewith variable inlet nozzle guide vanes, the position of the guide vanes being controlled by means including an operating shaft which passes coaxially through the power turbine drive-shaft. The engine shown comprises a compressor 2, combustion equipment 3 and a compressor-drive turbine 5, also a separate power turbine 8 mounted on a drive-shaft 14 and having variable inlet guide vanes 9. Each guide vane is mounted on a shaft 10 which carries a gear pinion 11 which engages with a gear-wheel 12 which is carried on an operating shaft 13 which extends through the drive-shaft 14, a control linkage 15  being connected at the forward end of the operating shaft.
Patent GB-1360720-A (GB)
Title: Tubular thermal insulation
IPC: F16L59/16
Filed: 1972-10-25
Abstract: 1360720 Insulating tube LINDE AG 25 Oct 1972 [27 Oct 1971] 49305/72 Headings H1A and A4D A method of producing tubular thermal insulation particularly for low temperature cables, including at least two coaxial tubes, the space or spaces between said tubes being evacuated and the or at least one space containing heat-insulating material, comprises removably fixing a plurality of pegs 7 to an inner tube 1 so that they extend in a substantially radial direction, covering said inner tube with insulating material, e.g. by winding strips 4, 5, 6, between the pegs 7, approximately to the height of the ends of the pegs 7, removing the pegs 7 and replacing them by fixing elements (not shown), of high tensile strength fixed at one end to the inner tube, fixing the outer ends of said fixing elements to a holder (not shown), provided outside the insulating material, and arranging an outer tube (not shown), to surround said holder. The pegs 7 are preferably applied to the inner tube by being attached to a strip, e.g. of metal which is wound helically on the tube, the pegs 7 being spaced to provide 3 per turn of the helix. The pegs 7 may be of tubular form and pointed at their end remote from the inner tube 1 so that the strips of insulating material are guided therebetween. The fixing elements are preferably of fibres, wires or strips of material having a low ratio of heat conductivity to tensile strength. The holder may also be in the form of a helical strip with means for engaging the fixing elements.
Patent GB-1205269-A (GB)
Title: Apparatus for the manufacture of heat-exchangers
IPC: B21D53/02
Filed: 1967-10-31
Abstract: 1,205,269. Tubular heat-exchangers. E. I. DU PONT DE NEMOURS & CO. 31 Oct., 1967 [7 Nov., 1966], No. 49465/67. Heading F4S. [Also in Division F2] In a heat-exchanger the tubes T are heatsealed in the tube plates 12, both the tubes and plates being of plastics materials such as a copolymer of tetrafluoroethylene and hexafluoropropylene, or polymers of amides, acetate, esters, olefins, vinyl halides or styrenes.
Patent GB-1367824-A (GB)
Title: Process for the preparation of aqueous solutions of hydrazoic acid
IPC: C01B21/08
Filed: 1972-10-27
Abstract: 1367824 Hydrazoic acid; hydrazinium azide SOC EUROPEENNE DE PROPULSION 27 Out 1972 [29 Oct 1971] 49701/72 Heading C1A Aqueous solutions of hydrazoic acid are made by contacting an aqueous solution of a metal azide with a cation exchange resin in the acid form. The preferred metal azide is sodium azide. Hydrazinium azide is prepared by reacting the hydrazoic acid prepared as above with hydrazine. An inert gas (e.g. nitrogen, hydrogen, helium or a saturated gaseous hydrocarbon) may be bubbled into the solution of hydrazoic acid to carry it into the hydrazine solution.
Patent GB-1083934-A (GB)
Title: Improvements in extrusion presses
IPC: B29B9/06
Filed: 1965-11-29
Abstract: 1,083,934. Roller-and-ring machines. GEBRUDER BUHLER. Nov. 29, 1965 [Dec. 1, 1964; April 9, 1965; Oct. 25, 1965], No. 50521/65. Addition to 1,037,145. Heading B5A. A roller-and-ring machine particularly intended for the pelletization of animal foodstuffs or plastics waste, is similar to that described in Specification 1,037,145, but the annular feed device on to which a layer of material is formed by centrifugal force is no longer attached to the feed screw and is preferably not rotated. In the embodiment shown, the feed device is an extension 66 of a casing 60 surrounding a feeding member 55 which comprises adjustable paddles 151 attached to a conical core. Furthermore, ring 26 is held in position by an annulus 70 which is forced against the ring by the introduction of hydraulic fluid from a manual pump 80 into a gap between an annular groove in annulus 70 and an annular piston 62 associated with casing 60. Casing 60 is pivoted to main casing 10 and may be swung away therefrom to facilitate cleaning the various components and changing of ring 26. In a second embodiment, Fig. 1 (not shown), the feed device is an annulus (160) and in a third embodiment, Fig. 2 (not shown), the device is a drum (42) attached to a cover (11). Both the drum, cover and screw housing (60) are swingable away from ring (26) by release of bolt (19), and ring (26) may be adjusted axially by screws (28).
Patent GB-1410137-A (GB)
Title: Gas turbine engines
IPC: F23R3/00
Filed: 1973-11-02
Abstract: 1410137 Gas turbine engine combustion equipment AVCO CORP 2 Nov 1973 50996/73 Heading F1L The invention relates to a gas turbine engine and to means for cooling the wall of a duct thereof through which hot gases from the combustion section flow. The engine shown comprises a reverse flow type combustion chamber the gases discharging through an annular outlet of U-shape defined between an outer wall 30 and an inner wall 28. The outer wall is formed by an outer skin 38 and an inner skin 39 which are spaced apart to define a chamber 42 through which cooling air is arranged to flow. The skins 38, 39 are connected at their outer ends to a ring member 40, and are connected together at their inner ends. The skins are spaced apart by means of dimples 56 formed on the outer skin 38, cooling air flowing into the chamber 42 between the skins through openings 54 in the outer skin, and discharging into the gas flow through openings 55 in the inner skin. In Fig.3 the cooling air chamber is again formed by inner and outer skins 64, 62 but an intermediate skin 66 is disposed therebetween, the dimples 76 being formed in this embodiment on the intermediate skin.
Patent GB-1413475-A (GB)
Title: Production of cyclic esters lactones
IPC: C07D309/30
Filed: 1971-11-05
Abstract: 1413475 Cyclic esters (lactones) BURMAH OIL TRADING Ltd 31 Oct 1972 [5 Nov 1971] 51563/71 Heading C2C Cyclic esters (lactones) are prepared by reacting a cyclic ketone containing 5 or 6 carbon atoms and a hydroperoxide having the general formula R-OOH, wherein R is a substituted or unsubstituted alkyl, alkenyl or aralkyl group provided that the carbon atom attached to the -OOH group does not form part of an acyl radical, in the presence of a catalytic amount of metaboric acid, the anhydride thereof or an ester thereof in an inert diluent and under substantially anhydrous conditions. Suitable metaborate esters are those of formula (R<SP>1</SP>-O-B=O) n  where R<SP>1</SP> is an optionally substituted alkyl, aryl, alkaryl or aralkyl group and n is 1 or 3 depending on the stereochemistry of the alkyl, aryl, alkaryl or aralkyl group. Metaboric acid may also be prepared in situ by the azeotropic distilation of orthoboric acid. Suitable diluents are cyclohexane toluene, ethyl benzene or benzene. Exemplified are the preparation of t-caprolactone and #-volerolactone from cyclohexanone and cyclopentanone respectively.
Patent GB-1478720-A (GB)
Title: Punchball
IPC: A63B69/20
Filed: 1974-11-29
Abstract: 1478720 Punch ball D DEKKER LTD 27 Feb 1976 [29 Nov 1974] 51807/74 Heading A6M A punch ball comprises an inflatable bladder 1, a cover 2 a first cupped support 4 positioned adjacent the bladder within the cover and a second cupped support 6 connected to the first support but positioned outside the cover. Preferably the support 4 has a protuberance 5 which carries the support 6 and has a blind bore adapted to receive the end of a supporting stem 10, a locking ring 7 retaining the support 6 in position. Alternatively the stem 10 may be formed integrally with the spigot 5 and support 4.
Patent GB-1190970-A (GB)
Title: A method for preparing Siloxane Polyoxyalkylene Copolymers
IPC: C08G77/46
Filed: 1967-11-14
Abstract: 1,190,970. Siloxane - polyoxyalkylene copolymers. SHIN-ETSU CHEMICAL CO. 14 Nov., 1967 [6 March. 1967], No. 51813/67. Heading C3T. A copolymer is made by reacting (a) an organopolysiloxane containing Si-bonded Cl, obtained by chlorinating a siloxane containing Si-bonded H, with (b) a hydroxypolyoxyalkylene compound in the presence of at least one amine selected from pyridine and quinoline and derivatives thereof and aromatic amines, and subsequently removing the amine hydrochloride produced and neutralizing the reaction product, in the presence of an aliphatic alcohol, with a basic compound of an alkali or alkaline earth metal. Examples are given.