baber/WOPTO huggingface dataset:
Patent GB-1007884-A (GB)
IPC: C08F259/04
Filed: 1964-06-22
Abstract: Graft copolymers are made by irradiating with high energy ionizing radiation solid polyvinyl chloride swollen with a mixture of styrene and acrylonitrile containing 50 to 99% by volume of acrylonitrile. The polyvinyl chloride may be in the form of a thread, strip, tube, sheet, moulded article or powder. The ionizing radiation may be derived from a cobalt-60 source. Specification 801,528 is referred to.
Patent GB-535693-A (GB)
Title: Improved means for locating and destroying enemy submarines
IPC: B63G9/04
Filed: 1939-09-13
Abstract: 535,693. Destroying submarine vessels. STEPHENSON, G., GORDON, R., and CAREY, L. G. Sept. 13, 1939, No. 25749. [Class 9 (ii)] A sectional submarine net is supported by buoys which contain, in the upper part, a flare, and in the lower part a tube from which a projectile may be discharged downwardly. When a submarine drags upon the net, a cord is pulled which causes ignition of the flare and discharge of the projectile. The buoy comprises a hollow conical body 1 surrounding a central tube 2 for the projectile 40, a cylindrical compartment 3 containing a check-reel 17 and a dome 4 containing a housing 5 for a flare 31. The projectile is held in the barrel 2 by means of double-armed levers 41, the longer arms of which engage grooves 46 in the upper part of the projectile casing while the shorter arms project under a flange 44 of a firing pin 38 and are normally held up by a spring 48. The lower end of the tube 2 is sealed against entry of water by a pivoted flap 11 which is normally retained in the closed position by a projection on an eye 14 attached at the outer end of a steel wire 15 extending through a guide-tube 16 to the compartment 3 where it is wound on a check reel 17. The eye is connected to a section of the netting. The reel 17 is frictionally held by an adjustable cone 25 so that it rotates only with a certain minimum pull on the wire. When a submarine engages the net, the resulting pull releases the flap 11, and rotates the reel so that a cam 28 on the upper part operates a pin 30 which causes the fracture of a glass closure 33 thus allowing sea water to enter and ignite the flare. At the same time, a cam 29 on the lower part of the reel depresses the firing pin 38 to release the levers 41 from the projectile and to fire a propellant cartridge 49. A lifting shackle 50 carries an eccentric pin 53 engaging within a slot at the end of a spring-controlled slidable rod 55, which is connected through a lever 57 with a pin 59. When the buoy is being lifted by the shackle, the pin 59 is depressed and enters a. hole 62 in the reel 17 and locks it against rotation, thus rendering the buoy inactive.
Patent GB-738740-A (GB)
Title: Improvements in and relating to reservoir writing instruments of the ball tip type
Inventor: FEHLING HANS REINHARD
IPC: B43K7/00
Filed: 1951-11-03
Abstract: 738,740. Reservoir pens. BIRO SWAN, Ltd., [formerly BIRO PENS, Ltd.]. Feb. 2, 1953 [Nov. 3, 1951], No. 25762/51. Class 146(3). In order to obviate surplus ink accumulating on the lip of the ball housing in a ball-point pen, the writing unit is mounted for rotation in and relatively to the holder. Automatic rotation may be caused by forces set up in the act of writing, i.e. by the couple produced on the ball, or by some motive power connected to the writing unit. As shown in Fig. 1, the writing unit 1, comprising a capillary tube reservoir 1a and a housing 3 for a writing ball 2, is grooved at 7 to receive three balls 6 located in holes in a holder casing 4. The balls 6 are retained by a split ring 8, or an outer sleeve, and the arrangement thus comprises an antifriction journal bearing upon the writing unit which will rotate within the casing 4 during the act of writing. In Fig. 5, a flange 12 on the unit 1 bears on balls 13 retained by a shoulder in the casing 4 ; in a modification, a ball race is interposed between the shoulder and flange. To prevent the unit 1 from being pushed into the casing in the act of writing, a further antifriction bearing may be disposed towards the rear end of the unit, or, as shown in Figs. 7 and 9, a thrust bearing may be used. In Fig. 7 there is a single ball 15, located within a tripod member 16, engaging a hardened bearing 17 within the writing unit. The ball 15 could be located in a metal thrust plate backed by a rubber block so that the unit 1 can yield resiliently during writing. Fig. 9 shows another resilient mounting comprising a cone 18 on a thrust plate 19 which is urged forward by a compression spring 20, the point of the cone entering an indent in a bearing 17 in the reservoir 1a. In another form of thrust bearing for the unit 1, the holder casing 4 is open-ended to receive a cap having an axial bore within which is a spring-urged ball. In Fig. 12, the writing unit 1 is located within the casing 4 by two ball bearings 21, 22 as described above, and an end plug 23 has an axial bore through which a flexible cable 24 extends. The cable is attached at one end to the unit 1, and the other end is attached to some means for imparting rotation thereto. In another form, the writing unit extends beyond the rear end of the casing and has attached thereto a pulley adapted to be rotated by an endless cord driven .in some known manner. For drawing straight lines along a straight-edge, the writing unit is extended beyond the front of the casing so that it bears against the straight-edge, and is thus rotated within the casing. Specifications 573,747 and 706,317 are referred to.
Patent GB-1435874-A (GB)
Title: Generator for controlling a transducer
IPC: H03K3/03
Filed: 1974-06-11
Abstract: 1435874 Amplitude modulators COMMISSARIAT A L'ENERGIE ATOMIQUE 11 June 1974 [13 June 1973] 25785/74 Heading H3R A generator for controlling a transducer by bursts of sinusoidal oscillations comprises a generator as shown in Fig. 2 for producing wave trains formed by a whole number of half cycles of periodic signals and a low pass filter (not shown) which passes the fundamental frequency of the periodic signals. The generator includes two monostable circuits connected in closed loop to form an astable circuit which is on-off keyed by a pulse 25 to form two displaced pulse trains S 1 , S 2  synchronized in phase which are added in a circuit including inverters 26, 27, transistor 28 and resistors R 1  to derive a composite pulse train at 0 having twice the amplitude. This composite signal is applied to a low-pass filter (Figs. 4, 6, not shown) to derive a sine wave signal suitable for driving a transducer. The free running frequency of the astable circuit can be varied by adjusting the time constant of at least one of the multivibrators determining its unstable period.
Patent GB-1524277-A (GB)
Title: Process for the production of polyhydroxyl compounds whichare soluble or dispersible in water
IPC: C08G18/08
Filed: 1976-06-22
Abstract: 1524277 Polyhydroxyl compounds; polyurethanes BAYER AG 22 June 1976 [16 Dec 1975 25 June 1975] 25792/76 Heading C3R Water-dispersible or water-soluble polyhydroxyl compounds are prepared by reacting from 0À08 to 50% of the hydroxyl groups in an organic polyhydroxyl compound of M.W. 400 to 10,000 which is neither dispersible or soluble in water, e.g. a polyether or polyester, with a compound which contains at least one non- ionic hydrophilic group and at least one group which reacts with OH groups in an addition reaction, the quantitative ratios and functionality of the reactants being such that the product contains a statistical average of at least two free OH groups. A suitable compound containing at least one non-ionic hydrophilic group and a group which reacts with OH groups is the reaction product of a monohydroxy polyalkylene oxide containing at least 40% of ethylene oxide units with excess of an organic polyisocyanate. Polyurethanes may be prepared from the water-dispersible or watersoluble polyhydroxyl compounds by reaction with a polyisocyanate.
Patent GB-1430510-A (GB)
Title: Process for preparing triorganotin compounds
IPC: C07F7/22
Filed: 1974-06-11
Abstract: 1430510 Preparing trinesphyltin halides M & T INTERNATIONAL BV 11 June 1974 [11 June 1973] 52831/74 Heading C2J A trinesphyltin halide of formula where X is Cl or Br is prepared by adding a solution of SnX 4  in a hydrocarbon to a solution in an ether of about 3 moles of a neophyl magnesium halide per mole of SnX 4  at 55- 65‹ C. and maintaining this temperature until reaction is complete and until the addition of water and HX to hydrolyse the reaction mixture to form an aqueous and an organic phase, separating the organic phase and isolating the desired product therefrom. Specified hydrocarbon solvents are hexane, cyclohexane, eicosane, benzene, toluene and xylene and the ether solvent is particularly a cyclic ether such as THF, tetrahydropyran (THP), 2-methyl THF, 2-ethoxy THP, tetrahydrofurfuryl ethyl ether, dihydropyran or N-methylmorphilone,
Patent GB-319133-A (GB)
Title: Improvements in or relating to poles, masts and the like for supporting overhead electric wires and for similar purposes
IPC: E04H12/12
Filed: 1928-09-08
Abstract: 319,133. Seabrook, A. H., and Avis, A. Sept. 8, 1928. Concrete posts; tubular posts.-A mast, adapted to carry a structure to support overhead electric cables, comprises a core built up from H-section girders secured end to end and an outer shell built up from annular concrete sections 13. The lowest girder 15 of the core is secured to a base plate 11 by cutting away a portion of the. web and passing the flange portions 16 through slots in the plate 11, the portions 16 being bent flat against the plate 11 to which they are bolted. The uppermost girder 17 carries a bolted cyilndrical top member 18 formed with a screw thread 19, and carries a washer 20 and a nut 14 which is screwed down to place the inner core in tension and the concrete wall in compression. To ensure firm seating, the wall of each section is' formed concave at the bottom and convex at the top. The sections are tapered upwardly and the flanges of the H-girder may hear against the wall sections 13. A spiked guard 22 is inserted between two wall sections as shown in Fig. 1. The space between the outer shell and the core may be grouted with slow setting cement, gravel, bitumen or pitch.
Patent GB-697647-A (GB)
Title: Improvements in pirn winding and like machines
IPC: B65H54/14
Filed: 1950-02-08
Abstract: 697,647. Winding yarn. CROWTHER, Ltd., KIMBER, R. A., and COLEMAN. P. E R. Feb. 8, 1951 [Feb. 8, 1950], No. 25869/49.. Class 120(ii) A pirn winding machine is provided with a screw mechanism for effecting the traverse of the yarn guide, a power drive for such mechanism, a feeler biased towards the package and engaging the surface thereof but displaceable away from the axis of the package as it grows in size, and means, controlled by the feeler, for connecting and disconnecting the power drive as the feeler, due to its engagement with the package, moves away from it towards the axis of the package. Mounted to travel on the reciprocating lead screw 2 is a carriage 3 connected releasably to the screw by a driving pin 5 on a spring- biased lever 6. A driven rock-shaft 15, having thereon a freely-mounted spring- urged quadrant 20 and a fixed arm 23, with an adjustable stop 22 therebetween, forms the driving means for the screw 2, the drive being under the control of a feeler 8 carried by a lever 32 freely pivoting about the screw 2. Carried by an arm 27, also, movable about the screw 2, is a locking pawl 26 which may engage with teeth 24 on the quadrant 20 to prevent feeding of the carriage 3, but, when the feeler 8 moves under contact with the growing package, a ramp on the lever 32 lifts a bar 33 to rock the arm 27 and tip the pawl 26 to permit the arm 23 to drive the arm 20 and hence rotate a pinion 28 to move a pawl 30 to drive a ratchet wheel 31 and thus rotate the lead screw 2 to advance the carriage 3. An adjustable ramp 34 may be positioned on the bar 33 so that the packages may be shaped as desired. The thread guide is also given an oscillatory motion in a plane parallel to the axis of the pirn by pins 17 one of which contacts the rod 18 rocked by the shaft 15. When the pirn has been fully wound the pin 5 is automatically disengaged from the screw 2. Specifications 692,090 and 697,646 are referred to.
Patent GB-962303-A (GB)
Title: Self-closing spray valve for pressure vessels containing gas/liquid solutions
IPC: B65D83/14
Filed: 1962-07-05
Abstract: 962,303. Aerosol containers. C. G. SIEBEL. July 5, 1962 [July 5, 1961; Aug. 16, 1961], No. 25873/62. Heading F1R. [Also in Division F2] A self-closing spray valve for aerosol containers, comprises a valve stem 9 axially movable in a valve housing 1 in the opening sense against a spring 4, there being formed in the stem an axial outlet duct 8 communicating with the container by way of a radial duct 7 which opens into an annular groove 5 in the stem, the radial duct being normally closed by a resilient sealing washer 3 of constant internal diameter in its unstressed state, the inner periphery of which is engaged, under radial compression, in the annular groove and the outer periphery of which is held by the housing, wherein the diameter of that annular portion of the valve stem which lies between the radial duct and the lower edge 5c of the annular groove increases from the radial duct toward the lower edge of the annular groove. As shownthe washer is normally urged against an over, turned flange of the dispenser cover 15. That portion 3a of the groove which increases from the duct 7 toward the lower edge of the groove, is formed as a radius. In a modification, the groove 5 is of circular arcuate cross section, whereby both the peripheral edges of the sealing washer are deformed against the stem, so, however, as to leave a small annular space between the washer and the base of the groove in a region between the deformed edges of the hole in the washer. In another modification, the valve stem has a shoulder locating on a joggled portion of the container cover 15 so that it is positively located in the closed position and the washer assumes a planar position. The stem has an extension 22 working in guides 23 in the housing 1. An enlarged portion 25 of the stem may have radial projections 18 which bear against the sealing washer.
Patent GB-1389943-A (GB)
Title: Device for cutting a continuous web into sheets
IPC: B65B61/06
Filed: 1972-06-02
Abstract: 1389943 Cutting web material HAUNIWERKE KÍRBER & CO KG 2 June 1972 [2 June 1971] 25916/72 Heading B4B A device for cutting web material comprises an intermittently-driven drum 7 for feeding and holding the web materials, a cutter blade 11  mounted within the drum and arranged to be projected outwardly through an opening 8 in the periphery of the drum for co-operation with a counter cutter 16 so as to sever the web during a stationary period of the drum. The web 3 is drawn from a supply reel 4 by rollers 1, 2, then around the drum 7 and a take-off drum 17; the drums 7, 17 are provided with suction ports in their peripheries so as to hold the portions of web after they have been severed. The cutting blade 11 is moved into cutting engagement with the blade 16 by means of a rotatable cam 13, the cutting edges of the blades being inclined to one another in order to provide a shear cut; alternatively the cam 13 may be replaced by a solenoid (124), Fig. 2 (not shown). The counter cutter blade 16 is mounted for adjustment by means of screws 22. In the construction shown in Figs 3 and 4, the drum 207 is supported at one one end only and the cutting blade 211 only passing into the open end of the drum. The blade is mounted on a support bracket 226, 228 pivotally connected to an arm 229 via a bearing 231; the blades are maintained in contact during cutting by means of a spring 233. The cutting movement is effected by a spring 237 under the control of a cam 213.
Patent GB-601845-A (GB)
Title: Improvements in or relating to electromagnetic control apparatus, particularly contactors
IPC: H01H47/22
Filed: 1945-10-05
Abstract: 601,845. Electromagnetic relays. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Oct. 5, 1945, No. 25973. Convention date, Oct. 12, 1944. [Class 38 (v)] The armature 2 of an electromagnetic relay is held attracted to the field structure 1 bv remanent magnetism and is released after a predetermined time interval by subjecting the relay to the action of A.C. of limited but adjustable strength, which serves slowly to demagnetize it. Either the armature or the field magnet or both may be made of retentive steel or there may be alternate laminations of retentive and non-retentive material. Each alternation of the A.C. causes the magnetic circuit to pass through a hysteris cycle which ends at a lower state of magnetisation than it began and a number of alternations are necessary to reduce the magnetisation sufficiently to effect release. Fig. 1 shows one arrangement. Closure of an "on" button causes rectified A.C. to energize a coil W, whereupon the armature is attracted and held by remanent magnetism and the contacts 11, 12 are bridged. Release is effected by pressing the "off" button whereupon A.C. flows through an adjustable resistance A<1> to a second coil W2. Fig. 5 shows a modification in which the armature in addition to closing the main contacts, opens, after a time interval, contacts 16 in the energizing circuit. On attraction of the armature 2, a spring 24 tends to open the contacts but is resisted by a cold flowing thermoplastic or resinous material 21. A spring 20 returns the material 21 on release of the armature. In other modifications, a single coil only is used on the relay and a resonant circuit is used. The arrangement may also be such that both D.C. and A.C. are used to operate the relay.
Patent GB-612113-A (GB)
Title: Improvements in centrifugal valves for hydraulically controlled clutches
IPC: F16D43/284
Filed: 1945-10-05
Abstract: 612,113. Fluid-pressure servomotor-control systems; centrifugally-actuated valves. SOC. DES BREVETS KEGRESSE S.E.K. Oct. 5, 1945, No. 26020. Convention date, May 8, 1943. [Class 135] [Also in Group XXIV] A centrifugal valve for a hydraulically - controlled automobile &c. clutch in which the clutch is engaged gradually and released instantaneously at a speed of rotation lower than that for engagement, comprises a closure member 2 in a chamber in a clutch plate 1, the chamber having lateral ad. mission and discharge ports 9, 12, and an axial draining port 13. As the speed of the driving element increases, the member 2 moves outwards, against the spring 4 and pressure fluid acting on the end of the member 2 in chamber 8, to cover first the port 12 and then the port 9 so that pressure fluid from the duct 14 acts on the piston 15 to produce a gradual engagement of the clutch at a predetermined speed. When the port 12 is closed, the port 13 is opened to drain fluid from the chamber 8 so that the member 2 abuts the end wall 7 of the chamber. When the speed falls to a predetermined value below that at which the clutch is engaged, the port 13 is closed so that fluid pressure acting on the end of the member 2 sharply opens the port 12 to relieve the pressure behind the piston 15 and quickly disengage the clutch. Specifications 489,317, [Group XXIV], and 496,466 are referred to.
Patent GB-339320-A (GB)
Title: Improvements in the manufacture of vessels and other structures that are proof against chemical and atmospheric influences
IPC: B65D85/84
Filed: 1929-07-04
Abstract: 339,320. pick, P. July 23, 1928 [Convention date]. Divided on 316,134, [Class 66, Hollow-ware]. Funnels.-In making funnels from sheet-metal plates on both sides with layers of plastic material capable of resisting corrosion and of being vulcanized or otherwise hardened. all or part of the edges of the plates to be joined are freed from the plastic material and then united together by welding, folding, &c., and these united edges are then coated on both sides with strips of unhardened plastic material which are united with the main coatings by a pressing or vulcanizing process preferably in a vacuum. The drum body shown in Figs. 2 and 3 is formed from a single sheet of metal, the abutting edges 2 being freed from the covering material 3 and welded together; the edges 27 of the covering material are pressed to concave form and strips 28, 29 of coating material with complementaryshaped edges are placed in the gaps between the edges 27 and consolidated with the layers 3 by an eccentric press in a vacuum.
Patent GB-679201-A (GB)
Title: Improvements relating to cathode ray tubes
Inventor: PEARCE RALPH REGINALD
IPC: H01J29/92
Filed: 1949-10-13
Abstract: 679,201. Cathode-ray tubes. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Sept. 26, 1950 [Oct. 13, 1949]. Class 39 (i). A cathode-ray tube for a Schmidt television projection system has an electrical conductor 5 connected to the final anode passing between the envelope 1 and a separate end wall 2, and the envelope is extended to form an annular shield 3 of insulating material shielding scanning coils 6 near the end wall 2 from the said conductor. The shield may be an integral or separately sealed extension of the conical part of the envelope, of the same angle or flared with respect to it, or may extend rearwardly of the end wall 2 (Fig. 4). The conductor 5 may be an annular coating of Liquid Bright Platinum paint extending outwardly from a graphite final anode 4, or curving round the rearwardly extending shield (Fig. 4) so that a metal band or spring clips may engage it, the paint being burned in before or during the sealing on of the end wall 2. The anode 4 may be an extension of an aluminium reflecting backing of the fluorescent screen, and formed at the same time as the backing by the evaporation of aluminium within the envelope.
Patent GB-1148747-A (GB)
Title: Gas generators
IPC: F42B3/04
Filed: 1966-06-13
Abstract: 1,148,747. Propellant charges. OLIN MATHIESON CHEMICAL CORP. 13 June, 1966 [11 June, 1965], No. 26298/66. Heading F3A. [Also in Divisions C3 and F1] A gas generator comprises a case 1, a solid gas-generating propellant 6 within the case, ignition means 2, 3, 5 adapted to ignite said propellant, a weather seal 11 positioned between said propellant -and said case, and a zeolite barrier 10 positioned between said weather-seal and said solid-propellant. The weather seal is preferably a laminate of aluminium and polyethylene terephthalate and the zeolite layer may be granulated zeolite with or without a layer of rubber composition containing zeolite. The generator may also comprise a sustainer 9, a flame shield 8, restrictors 12 and 13, and a zeolites packet 16, having a cover 17 with openings 18. The invention is based on the fact that zeolite absorbs the water liberated by ammoniumnitrate propellant when - subjected to wide fluctuations in temperature.
Patent GB-798782-A (GB)
Title: Anhydrous sterile preparations of alkali barbiturates and alkali thiobarbiturates
IPC: A61K31/16
Filed: 1956-08-28
Abstract: Alkali barbiturates and alkali thiobarbiturates are produced in sterile anhydrous form by admixing an aqueous alkaline solution of the barbituric or thiobarbituric acid with about 2 to 10 per cent by weight, with respect to the barbiturate, of a buffer salt such as sodium carbonate or sodium phosphate at a temperature below 10 DEG C., and filtering at this temperature then freeze drying the filtered solution preferably in the ampoules in which the material is ultimately sealed.  The starting solution should have a pH of 8 to 12, it may vary, but should be such that solution occurs without hydrolysis of the barbiturates.  The concentration of the barbiturate in the starting solution is between 10 to 40 per cent by weight. Other suitable buffer substances that may be used are the citrates of alkali metals and glycine.