baber/WOPTO huggingface dataset:
Patent GB-1178016-A (GB)
Title: Production of Aqueous Vinyl Propionate Polymer Dispersions
IPC: C08F263/02
Filed: 1967-05-19
Abstract: 1,178,016. Aqueous dispersions of polymers of vinyl propionate. BADISCHE ANILIN- & SODA-FABRIK A.G. 19 May, 1967 [20 May, 1966], No. 23400/67. Heading C3P. Aqueous dispersions of polymers of vinyl propionate are prepared by polymerization of vinyl propionate and other monoethylenically unsaturated monomers with water-soluble polymerization initiators in aqueous phase in the presence of emulsifying substances, the vinyl propionate or a mixture of monoethylenically unsaturated monomers containing at least 60% by weight, based on the mixture, of vinyl propionate being polymerized and then 7 to 20% by weight of styrene and 0 to 30% by weight of at least one other monoethylenically unsaturated monomer (percentages of these additives being based on the total amount of monomers used) being added to the aqueous dispersion of vinyl propionate polymer and the polymerization continued in a conventional way until at least the major proportion (by weight) of the monomers has been polymerized. In the examples are used: vinyl propionate, tert-butyl acrylate, acrylic acid, acrylamide, styrene, ethyl acrylate and n -butyl acrylate; potassium persulphate, aqueous solution of a sulphonated reaction product of ethylene oxide and iso-octylphenol, aqueous solution of the sodium salt of a mixture of hydroxyoctadecane sulphonic acid and octadecene sulphonic acid, aqueous ammonia solution, turkey red oil, aqueous solution of a copolymer of acrylonitrile and methyl acrylate which has been hydrolysed with ammonia, aqueous solution of a copolymer of acrylamide, methacrylamide, acrylic acid and sodium vinyl sulphonate, solution of polyglycol derived from propylene oxide and ethylene oxide, a reaction product of ethylene oxide and a long chain fatty alcohol and butanol.
Patent GB-403767-A (GB)
Title: Device for trapping and killing rabbits and other vermin
IPC: A01M23/26
Filed: 1933-08-23
Abstract: 403,767. Animal traps. DUNCAN, J., Easter Wairds, By Denny, Stirlingshire. Aug. 22, 1933, No. 23558/32. [Class 5 (i).] A trap for rabbits and other vermin comprises a base member 1 of substantially boxform and a pivoted platform 16, 16<1>, each comprising sections presenting between them an elongated slot adapted to accommodate spring- influenced arms 6, 8, one of said arms, 8, being formed with a cam edge 10 tracking a roller 11 mounted in the base member, a latch device 19, 20 serving normally to retain the arms in the set position, and safety means for preventing accidental springing of the trap. The arms 6, 8 are pivoted together at 9 and are provided with laterally projecting bars 12, 13 for use in setting the trap. The detent 20 of the latch device engages a lug 22 on the arm 8 in the set position. The safety means comprise a link 23 engaging the arm 8 and a safety-catch 24 engaging the platform section 16.
Patent GB-245214-A (GB)
Title: Improvements in apparatus for heating water and other liquids
IPC: F24H1/20
Filed: 1924-10-06
Abstract: 245,214. Beldimano, A. Oct. 6, 1924. Gas stoves; casings; air supply, regulating; extinguishing combustion.-A liquid heater comprises a cistern a, which may be corrugated, a combustion chamber f projecting into the cistern, an oil burner x, a valve controlling the supply of air to the burner, a thermostatic governor closing the valve as the liquid reaches a predetermined temperature to extinguish the burner and a discharge tap e so disposed that the liquid cannot be discharged below a level sufficient to operate the thermal element m of the governor. The element m is in communication with expansible capsules o which operate a cross-rod s through link-work p, q. The cross-rod s bears a tumbler-weight which tends to open or shut the air-valve u definitely. The heater is lagged externally and this lagging mav be made in removable sections or in a plurality of layers so that if desired, for warming the room in which it is placed, portions or a layer of lagging may be removed. The burner may be extinguished by steam conveyed by a pipe from the boiler to the combustion chamber when the water boils, or by a thermostatically operated valve which closes the combustion products outlet.
Patent GB-677392-A (GB)
Title: Improvements in or relating to preparation of boron
IPC: C25C3/34
Filed: 1950-09-27
Abstract: 677,392. Electro-deposition of boron. WEIL, W. M. Sept. 27, 1950 [Oct. 8, 1949; June 21, 1950], No. 23667/50. Class 41. A process of preparing boron by electrolysis comprises electrolysing a fused bath of a chloride or fluoride of potassium, potassium fluoborate, and boron oxide. The process may be carried out in a heated crucible of graphite or similar conduction refractory material, protected by a shell of high heat-resistant metal. The crucible may be heated externally or by electric induction or electric resistance heating in the bath itself. For small scale operation molybdenum or nickel alloy plates are suitable for the cathode, but for large scale operation a suitable cathode is low-carbon iron, from which boron is easily stripped if the cathode is coated with salt after removal from the bath and allowed to cool. The boron is purified by washing with water and acid. Impurities containing carbon are skimmed periodically from the bath to reduce the carbon content of the boron deposited. The amount of the potassium salt is sufficient to dissolve the potassium fluoborate and maintain the bath in a fluid state. When potassium chloride is used the temperature is maintained within the range of about 650‹ to about 1000‹ C., and when potassium is used the temperature is maintained within the range of about 800‹ to about 1000‹ C.
Patent GB-1204111-A (GB)
Title: Improvements in or relating to consumers electric supply meters
IPC: G07F7/00
Filed: 1966-05-26
Abstract: 1,204,111. Coin-freed meter; counting apparatus. LONDON ELECTRICITY BOARD and A. J. BAGGOTT. 23 Aug., 1967 [26 May, 1966], No. 23692/66. Headings G4D and G4V [Also in Division G1] An electricity metering installation includes a plug-in meter which provides an electric output in the form of signals which may operate a remote indicator and/or a coin or token operated prepayment unit. Associated with the meter is an electrically operable contactor unit, e.g. a solenoid-operated or thermally operated or solid state switch. This switch can be operated to interrupt the electricity supply either by control signals, e.g. from the prepayment unit or an off-peak tariff control timer, or automatically on disconnection of one of the elements of the installation, e.g. the prepayment unit. Fig. 2 shows such an installation in which the plug-in meter 13 controls the operation of an impulse generating switch 17 which is connected to a repeat register 22 operated by the impulses and also to a prepayment unit 19 which is similarly operated. In the prepayment unit coins or tokens-which may be paper tokensestablish a credit of electric units, a switch 20 being operated when the credit is used up. This switch controls the operation of the switch 21 of the meter's associated contactor unit 14 to interrupt the supply. In a modification (Fig- 5, not shown) the prepayment unit has an over. ride control which when operated establishes an unpaid-for credit, e.g. to the value of one coin or token. When this credit has been used, no further electricity can be obtained until a further token is inserted, but insertion of such further token is arranged to reset the override control. The unit 23 in Fig. 2 is a device to cut off the supply in accordance with tariff requirements-e.g. it may be a timer controlling an off-peak tariff, or a load-sensitive device, or a device operated by control signals from the supply authority. If prepayment is not required unit 19 can be removed, and this automatically opens switch 14. A short circuiting link replacing it, i.e. restoring the connection between meter 13 and contactor unit 14, will then convert the installation from prepayment to credit metering without the necessity to replace the meter. Fig. 4 (not shown) depicts an installation in which the supply energizes the primary winding of a transformer and the plug-in meter is connected to the secondary winding. This makes it possible to remove the meter without interupting the supply, but the arrangement can be such that unauthorized removal would break a signal circuit and, in response, open the contactor to disconnect the supply.
Patent GB-1202647-A (GB)
Title: Improvements in or relating to method, devices and papers for electrophotographic copying
IPC: G03G15/18
Filed: 1968-05-17
Abstract: 1,202,647. Electro-photographic processes. ANICET ANSTALT. May 17, 1968 [May 24, 1967], No.23717/68. Heading G2H. In a method of electro-photographic copying, an electrostatic latent image formed upon a photoconductive surface 2b carried upon a conducting base 2a is transferred to a uniformly charged insulating surface 1b of a paper sheet 1 by bringing the two surfaces into contact or in the immediate vicinity of each other and applying an electric field between the two surfaces having a high frequency component and a continuous component. The distance between the surfaces is from 0 to 120 micromillimetres, the h.f. component has a frequency from 1À2 kilohertz to 3000 megahertz and the continuous component is of the order of a few tens of volts. As shown, the surfaces pass over conductive drums 3, 4 and form a region 14 within which ionisation of the air gap takes place under the action of the electric field. The latent image pattern on surface 26 is not destroyed during the interaction, and further copies can be made. The photo-conductive material may be on an endless band, either passing over drums Fig. 7 (not shown) or over a flat conductive grid to which it is applied by air suction, the copy material passing over a similar closely adjacent grid, Fig. 8 (not shown). In a further embodiment, Fig.4 (not shown) the continuous component of the electric field is produced by gradually covering with a previously charged electret as assembly consisting of two metal plates (42<SP>1</SP>), (43<SP>1</SP>) between which are maintained in contact a photo-conductive paper sheet 2<SP>1</SP> and a paper sheet having a insulating layer. The paper sheet consists of a dispersion of calcium stearate in a binder of methyl polymethacrylate. The photo-conductive material may be zinc oxide, cadmium sulphide, anthracene, triazoles, oxaziles thiazoles or triazines, and may contain a sensitizing agent selected from orange acridine, fluorescein, eosine, Bengal pink or methylene blue. The supporting structure may be a natural or synthetic rubber or a synthetic plastic e.g. butadiene-vinyl chloride, butadiene styrene or acrylonitrile-vinylidene chloride copolymers, polyvinyl-butyral polyesters, or pliolites 3 to 6. A corona discharge unit for the initial charging of the photo-conductive and insulating surfaces is of the scorotron type having a inner tungsten wire of 80 micromillimetres diameter surrounded by an incomplete cylinder of 20 cm. diameter, a meshed element of insulating material closing the cylinder.
Patent GB-939367-A (GB)
Title: Polytrithiane of high molecular weight and process for its preparation
IPC: C08G75/06
Filed: 1961-06-30
Abstract: Trithiane is polymerized in the melt by mass polymerization in the presence of a cationically active catalyst in the absence of solvents at 220 DEG  to 250 DEG C.  Lewis acids, e.g. boron, aluminium, iron, and antimony trichlorides, antimony pentachloride, zinc chloride, tin and titanium tetrachlorides, boron trifluoride, and complex compounds of Lewis acids, e.g. aryldiazonium fluoroborates are specified.  The process may be carried out in the absence of oxygen.
Patent GB-1249204-A (GB)
Title: Apparatus for the production of printing stereos
Inventor: HOLLOWAY ALEXANDER EDWARD
IPC: G03C9/08
Filed: 1969-05-09
Abstract: 1,249,204. Printing on curved surfaces. BOWATER PACKAGING Ltd. April 27, 1970 [May 9, 1969], No.23768/69. Heading G2A. In apparatus for producing a curved printing stereo for subsequent attachment to the cylinder of a rotary printing machine, the stereo S and negative N are placed in contact on the concave side of a transparent curved former 5, held there by a removable pressure device, and illuminated by a light source on the convex side of the former. As shown, the semi-cylindrical former 5 is fixed in an aperture 3 in a table 1. The radius of the cylinder is that of the printing cylinder on which the stereo is to be mounted. The negative N is placed inside the former, the stereo S laid on the negative with its photo-sensitive side downwards, and a celluloid protective sheet laid on the stereo. The exposure is effected by a series of discharge lamps 9 disposed round the undersurface of the former 5. A pressure plate 23 of arcuate section, corresponding in shape to that of the former, is mounted so that it can be moved into the former to engage the stereo. At each side of the table is mounted a plate 11 having an L-shapedguide track 13 formed on its inner face. The pressure plate 23 is carried by two sector-shaped plates 21 depending from a support rod 19 whose ends slide in the tracks 13. As rod 19 slides along the tracks, first the pressure plate is moved into position above the former, and then lowered into it until it rests against the sheets. It is now firmly clamped in this position by a clamping arrangement 39. The upper edges of the pressure plate are extended by two hinged leaves 25, 27 which are inter-connected by an over-centre toggle linkage 29, 31 having a handle 37. When the linkage is raised (full line position), the leaves are pivoted inwards. When the linkage is pushed down (broken line position), the leaves are forced outwards so that they form an extension of the pressure plate surface.
Patent GB-1247409-A (GB)
Title: Ignition device for discharge tubes
IPC: H05B41/04
Filed: 1969-05-09
Abstract: 1,247,409. Control systems for gas discharge lamps. NOKIA A.B., OY. 9 May, 1969 [10 May, 1968], No. 23826/69. Heading H2H. A system for starting a discharge lamp 10 comprises a resistor-capacitor circuit 8, 9 connected across an A.C. supply so that when the capacitor 9 is charged to a predetermined voltage a diac 7 breaks down to trigger a triac 6 thereby energizing the primary winding of a transformer 5, the resulting high voltage of the secondary winding being used to start the lamp 10. The energization of the primary winding occurs in every half-cycle of the A.C. supply and the capacitor 9 fails to reach the breakdown voltage of the diac when the tube 10 is illuminated. In a second embodiment the choke 2 forms the secondary winding of the transformer.
Patent GB-1082789-A (GB)
Title: Liquefaction and revaporization of gases
IPC: F17C9/02
Filed: 1966-05-27
Abstract: 1,082,789. Liquefaction and revaporization of gases. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. May 27, 1966 [May 31, 1965; Sept. 21, 1965; Nov. 5, 1965], No. 23828/66. Heading F4P. In liquefying natural hydrocarbon gases, e.g. methane, propane, butane, by indirect heat exchange with a cooled cold-carrier fluid or in revaporizing liquefied gas by indirect heat exchange with cold-carrier fluid which is thus cooled, the carrier fluid comprises a liquid which does not solidify during the heat exchange process, has a boiling point just below, equal to or above ambient temperature and contains particles of a substance which during the heat exchange undergoes a phase change. A suitable cold-carrier fluid comprises isopen. tane diluted with 12% normal pentane or with 15% isohexane serving as freezing point depressants and the particles may comprise water or water mixed with freezing point depressants such as ammonia, glycol, alcohol. The particles may also be absorbed by silica gel, carbon dioxide or ammonia and may serve as the phase-changing particles and resulting vapour may be discharged into the atmosphere or bound by bi-carbonates and water from which the carbon dioxide and ammonia respectively are recovered. Corrosive particles may be contained in small capsules suspended in the carrier liquid. Liquid methane having been transported by tanker is revaporized in heat exchange with carrier fluid. The so-cooled fluid is transported back to the production part and used to liquefy methane prior to transport.
Patent GB-620599-A (GB)
Title: Improvements in supports for infants' feeding bottles
IPC: A61J9/06
Filed: 1946-08-12
Abstract: 620,599. Brackets. JONES, C. G. Aug. 12, 1946, No. 23849. [Class 52 (v)] [Also in Group XVII] A bracket for supporting an infant's feeding bottle from the side of a cot comprises an adjustable plate A clamped to the side or rear rails L of the cot, to which is adjustably pivoted a rigid arm C carrying a cradle F for the feeding bottle K by a ball and socket joint G, the socket being fixed to the arm by a clamping screw H. The cradle F embraces the bottle and is fitted with a clip J.
Patent GB-446395-A (GB)
Title: Improvements in a shaker conveyor drive mechanism
IPC: B65G27/00
Filed: 1935-08-26
Abstract: 446,395. Toothed gearing ; converting rotary into reciprocating motion. BURCESS, A. F., 10, New Court, Lincoln's Inn, London.-(Goodman Manufacturing Co. ; 4834, South Halsted Street, Chicago, U.S.A.) Aug. 26, 1935, No. 23860. [Class 80 (i)] [See also Group XXX] A shaker-conveyer drive mechanism includes a planetary gear for rotating a member, which is connected to and reciprocates the conveyer, means being provided for moving the reaction member of the planetary gear in opposite directions during each revolution of the rotatable member thereby to impart a variable acceleration to the conveyer. An electric motor 19 rotates a shaft 26, Figs. 4 and 5, through a planetary reduction gear 28 comprising a sun-wheel 21 keyed to the motor shaft, pairs of planet pinions 22, 32 mounted in a planetary cage 24, which is keyed to the shaft 26, the pinions 22 meshing with the wheel 21 and the pinions 32 with an internally toothed ring 33 constituting the reaction member. The ring 33 is bolted to support members 35, 37 rotatable by means of hubs 36, 38. The outer end of the shaft 26 has a crank 41 connected by a pitman 43 to the conveyer to reciprocate the latter. The rate of acceleration of the crank 41 is changed by rocking the ring 33 in opposite directions. This is effected by a second crank 47 on the shaft 26 at right angles to the crank 41 and having journalled thereon a connecting member 50 pivoted at 53, Fig. 5, to a rocking lever 52, which is, at its free end, connected by a link 63 to a lug 64 on the ring support 37. The other end of the lever 52 has a number of apertures 54, 55, 56 corresponding with apertures 57, 58, 59 in a fixed casing 16 so as to provide three fulcrums for the lever 52, when a pin 60 is inserted into one or other of the corresponding apertures. This gives three degrees of acceleration to the crank 41 according to the pair of apertures receiving the pin 60. In a modified construction, Fig. 12, the crank 47 reciprocates a block 65 slidable in a frame 77 rocking about a pivot 78. An annular lateral extension of the frame forms a hub for a rocking member 69 having a pair of oppositely disposed lugs 70, 71, the lug 70 being connected by a link 72 to a worm gear ring 67, and the lug 71 1 by a link 71a to the ring support 37. The oscillation of the frame 77 is thus transmitted to the reaction member 33 through the rocking member 69 which has one end anchored to the ring 67 by the link 72. To adjust the amount of oscillation of the member 33, the ring 67 is moved by a worm 73 on a shaft 74 provided with a hand wheel 76.
Patent GB-763184-A (GB)
Title: Apparatus for inductive prospecting
IPC: G01V3/165
Filed: 1954-08-17
Abstract: 763,184. Geophysical exploration. CANADIAN AIRBORNE GEOPHYSICS, Ltd. Aug. 17, 1954 [Aug. 31, 1953], No. 23909/54. Class 37. In inductive geophysical exploration wherein a transmitting coil energized with low frequency A.C. is trailed by a moving vehicle, and the phase of the signal picked up by a receiving coil is noted to determine the type of local earth strata, the effect of eddy currents produced in the locally associated metal bodies of the vehicles is compensated by one or more auxiliary coils fed with a current which is 90 degrees out-of-phase with that in the main transmitting coil, or by auxiliary metal sheets producing compensating eddy currents. For use with aircraft, the receiving coil is trailed as near to the earth's surface as practical, the tow-line containing the connecting wires, or consisting of a single, thin, steel wire, and the pick-up voltage being transmitted by radio to the aircraft as L.F. modulation of an R.F. voltage. Specification 763,185 is referred to.
Patent GB-1006571-A (GB)
Title: A device for the separation of steam from a liquid
IPC: B01D45/08
Filed: 1962-06-21
Abstract: 1,006,571. Centrifugal separators. LICENTIA PATENT-VERWALTUNGS G.m.b.H. June 21, 1962 [June 22, 1961], No. 23959/62. Heading B2P. In a separator having a cylindrical casing 2, Fig. 1, into which a steam-liquid mixture to be separated is introduced tangentially at the top as at 1 the wall of the casing is provided with liquid discharge openings 4 the cross-sectional area of which increases towards the bottom of the casing. In Fig. 1 the discharge through the holes 4 is radial whereas in Fig. 2 the discharge is tangential. The bottom of the casing may be closed by a plate 5 or a streamlined core having a radius smaller than that of the casing is arranged at the lower end of the casing, part of the liquid discharging through the annular space between the core and the casing. The dimensions of the openings in the casing wall may be widened as at 12, Fig. 2, in the manner of diffusers. A discharge space 7 may be provided around the separator at the height of the openings by means of an annular plate 6, the top of the space being closed: Alternatively, the top of the space is open and the bottom plate 5 is extended radially outwards to form an annular projection whereby any steam or gas bubbles still present in the separated liquid will be separated upon change of direction at the bottom of the space. A baffle plate may be incorporated at the discharge opening of the gas or steam at the top of the separator to provide separation of entrained liquid particles. A number of separators may be arranged in an inclined or vertical position within a pressure container of a nuclear steam generator in a circle above a chimney.
Patent GB-814207-A (GB)
Title: Vacuum insulated vessels
IPC: C25F3/24
Filed: 1956-08-03
Abstract: 814,207. Storing liquefied gases. SPENCER, P. L. (Aro Equipment Corporation). July 31, 1957 [Aug. 3, 1956], No. 24056/56. Class 8(2). [Also in Group XXXVI] A vacuum-insulated vessel for storing liquefied gases at sub-atmospheric temperatures and having metal walls is made by first electrolytically polishing at least part of the walls defining the evacuated space, electroplating with gold, silver, rhodium, indium, or copper, and then further electrolytically polishing the plated metal. Typically a low carbon stainless steel containing 18 per cent. chromium and 8 per cent. nickel is electropolished, flash electroplated with nickel, electroplated with cyanide copper, and then electropolished, followed by washing, finally with warm demineralized water. The bright surfaces so produced are disposed as the inner surfaces defining the vacuum chamber.
Patent GB-407880-A (GB)
Title: Process for the production of sour milk
IPC: A23C9/137
Filed: 1933-08-30
Abstract: A sour milk preparation which will remain homogeneous after standing is obtained by adding an aqueous solution of gelatine and sugar to full cream or skimmed milk, preferably pasteurized, before the milk is inoculated with a sour milk culture.  After incubation, the mass forms a jelly-like coagulum which on stirring passes into a viscous liquid state.  A process in which gelatine and sugar are added to milk after souring, is also referred to.