baber/WOPTO huggingface dataset:
Patent GB-988649-A (GB)
IPC: C08F2/22
Filed: 1963-05-03
Abstract: Stable aqueous dispersions of vinyl acetate polymers may be prepared by effecting polymerization of vinyl acetate in water in the presence of 0.3 to 5% by weight of the monomers of a protective colloid comprising a water-soluble copolymer of acrylamide and an N-alkyl acrylamide or N,N-di-alkyl acrylamide, said alkyl acrylamides having 2 to 6 carbon atoms in the alkyl group or groups.  The vinyl acetate may be copolymerized, e.g. with crotonic acid, acrylic acid, methacrylic acid or maleic or fumaric acids or the esters or half esters thereof. Polymerization may be effected in the presence of conventional catalysts and emulsifiers, e.g. ethylene oxide condensates, fatty alcohol sulphates and particularly reaction products of ethylene oxide-fatty alcohol adducts with phosphorus pentoxide.  The dispersions may be thickened by adding small amounts or dissolved by adding large amounts of bases such as ammonia and amines.  The dispersions may be used in paints and adhesive and may be added to concrete.  Examples describe the polymerization of (2) vinyl acetate and the copolymerization of vinyl acetate with (3) crotonic acid and (4) dibutyl maleate and crotonic acid in the presence of copolymers of acrylamide and N-tertiary butyl acrylamide, the phosphated reaction product of ethylene oxide and coconut fatty alcohols, sodium lauryl sulphate, potassium persulphate, sodium sulphite and sodium bicarbonate, the monomer and potassium persulphate being added incrementally.
Patent GB-1261396-A (GB)
Title: Improvements in or relating to safety seats of vehicles
IPC: B60N2/68
Filed: 1969-04-03
Abstract: 1,261,396. Energy-absorbing devices. REGIE NATIONALE DES USINES RENAULT, and AUTOMOBILES PEUGEOT. 3 April, 1969 [4 April, 1968], No. 17550/69. Heading F2E. [Also in Division A4] On impact during a collision the uprights 2 (one shown) of a backrest frame of a vehicle seat collapse longitudinally to absorb kinetic energy by forced sliding of the two parts of the upright on a tubular member 5.
Patent GB-1101526-A (GB)
Title: Method and apparatus for cutting-off lengths of wire and bending them into chain links
IPC: B21L15/00
Filed: 1966-04-21
Abstract: 1,101,526. Bending chain links. P. ESSER, [trading as MEYER, ROTH & PASTOR]. 21 April, 1966 [23 April, 1965], No. 17582/66. Headings B3A and B3E. In a method of making chain links, wire is fed through a bush 11 until it firmly abuts a stop 21 whereby it is held against rotation about its own axis while a cutting edge 23 of a knife 12 cuts the wire to the required length and the knife 12 and a pusher drive the wire downwardly on to a mandrel 16. A clamping member 17 holds the wire on the mandrel while bending tools 14 form it into a U-shape, Fig. 4 (not shown), and the final forming to C-shape is made by horizontally actuated side tools 28. The ends of the wire are trimmed on abrading surfaces 29, 31, which may comprise grinding wheels or the like, and may be arranged to trim the ends of the wire at an acute angle to each other so that they end up parallel in the finished link. Successive links may be cut to length and bent to shape simultaneously.
Patent GB-885892-A (GB)
Title: Improvements in and relating to cooling or freezing cabinets and the like
IPC: F25D11/02
Filed: 1959-05-22
Abstract: 885,892. Refrigerators. SOC. FRIMATIC, CAMPS & CIE. May 22, 1959 [Dec. 9, 1958], No. 17596/59. Class 29 In order to engender even diffusion of low temperature over substantially the whole of the interior volume of a refrigerator cabinet 1, it is provided on one of its upstanding walls with a plate-form cooling element 26 covered by a perforated or grid-like wall 30. The cooling element 26 may be in the form of a worm mounted on a carrier panel 27 provided in a recess 21 on the rear inside wall of the cabinet 1 and connected to the evaporator 25 associated with the upper freezing compartment 5. The wall 30 may be formed from a U-shaped sheet of expanded metal the two sides of which are hooked to pins 30<SP>1</SP> on the side walls of the recess 21.
Patent GB-362895-A (GB)
Title: Improvements in or relating to two-stroke cycle internal combustion engines
IPC: F02B33/00
Filed: 1930-06-06
Abstract: 362,895. Pumps. NAAMLOOZE VENNOOTSCHAP SMIT & CO.'S MACHINEFABRIEK, Kinderdijk, Holland. June 6, 1930, No. 17609. Convention date, June 8, 1929. Void [Published under Sect. 91 of the Acts]. [Class 7 (ii).] Automatic valves 4 are placed on the delivery side of a vane pump 1 which supplies the scavenging air to a two-stroke cycle engine. The vane is driven off the connecting-rod.
Patent GB-1346252-A (GB)
Title: Heat-processable radiation sensitive material
IPC: G03C1/498
Filed: 1971-05-27
Abstract: 1346252 Photographic light sensitive heatdevelopable materials EASTMAN KODAK CO 27 May 1971 [3 June 1970] 17631/71 Heading G2C Photographic light-sensitive, heat-developable materials contain a light-sensitive compound such as a silver halide, a reducible heavy metal salt such as silver behenate or a mercury or gold organic acid salt, a reducing agent for the heavy metal salt such as a bis-naphthol reducing agent optionally together with a silver halide developing agent and, to stabilize the image and reduce background stain, a compound of one of the formulae:- where Z completes a five-membered nitrogencontaining ring e.g. thiazole, thiadiazole, or tetrazole, R 1  is alkyl or substituted alkyl of up to 10C, -(CH 2 ) n COR 3  or aryl or substituted aryl of 6 to 12C, R 2  is -(CH 2 n COR 3 , n is 0 or 2 and R 3  alkyl or substituted alkyl of up to 5C, aryl or substituted aryl of 6 to 12C or furyl. On exposure to light, the material can be developed to form a stable image by heating. Other constituents present in the material include activatortoners e.g. phthalimide and its K, Ag and Hg salts, succinimide and N-hydroxy-succinimide and solvents such as tetrahydrothiophene-1:1- dioxide, 4-hydroxy-butanoic acid lactone and methylsulphinylmethane.
Patent GB-145576-A (GB)
Title: Improvements in or relating to carburettors for internal combustion engines
IPC: F02M7/06
Filed: 1920-06-29
Abstract: 145,576. Stromberg Motor Devices Co., (Assignees of Mock, F. C.). Aug. 30, 1917, [Convention date]. Spray carburettors.-In a carburettor having an annular starting and accelerating well 29, 33, a spool-shaped member 24 is inserted in the well and the annular space between the member 24 and a central tube 27 affords a fuel passage between the well and a passage 43 leading to spraying orifices 46 in an inner Venturi tube 45. The lower part 33 of the well is supplied from the base of the float chamber 19 through an aperture controlled by a hand-adjusted needle valve. The upper part 29 is open to the atmosphere through a restricted opening and to the fuel supply passage through apertures 38, so that when suction in. creases, the fuel level in the space 29 sinks and air is drawn through the apertures 38 with the fuel. A plug 25 at the base of the well carries the central tube 27, which has a fuel inlet 42 and supplies a starting and idling nozzle 48 near the throttle valve. This nozzle is supplied with air through the Venturi tube 13 and a passage 49<1> controlled by a needle valve 50. The air inlet and mixture outlet are controlled by butterfly valves 14, 16. Specification 118,626 is referred to.
Patent GB-682279-A (GB)
Title: A train for laying or removing pre-assembled railway track units
IPC: E01B29/02
Filed: 1950-07-14
Abstract: 682,279. Railway track-laying vehicles. ODOT, C. A. M. E. July 14, 1950 [Aug. 1, 1949], No. 17702/50. Class 103 (iv). [Also in Group XXX] A train for laying and removing railway tracks in pre-assembled sections comprises cars adapted to carry complete sections of track, a continuous horizontal runway disposed at the upper portions of the cars, the car coupled at the train end opposed to the locomotive comprising an extension of the runway the length of which is greater than that of the complete track sections to be laid or removed, a carriage adapted to roll along the runway and the extension thereof, and hoisting means on the carriage for lifting and lowering complete track sections. The cars comprising the train are each formed with a floor 5 and a structural framework comprising transverse frames 2 braced by diagonal members 29; the upper portions of the frames having brackets 6 to support the rails 3 of a runway of which the individual sections are interconnected bv members 12. The car at the track-laying end of the train has an over-hanging jib formed as an extension of the frame 2, 29 to support an extension of the runway which carries powerpropelled carriages 4. Each carriage has a pair of winches 14, manually operated by a handle 16, so that track sections, normally stacked on the rail cars as shown in Fig. 2, can be raised and transported to the end of the train and deposited on the track-bed. To enable the jib to be of light construction, retractable jacks may be positioned between the jib and the track-bed while track sections are being raised or lowered.
Patent GB-939334-A (GB)
Title: Magnetic force resistance welder
IPC: B23K11/31
Filed: 1962-05-08
Abstract: 939,334. Welding by pressure. ATOMIC ENERGY OF CANADA Ltd. May 8, 1962 [May 9, 1961], No. 17725/62. Class 83 (4). In a resistance welder comprising fixed and movable electrodes, means to apply an initial pressure to the movable electrode and conductors positioned parallel to one another and connected in series to supply weld current to the movable electrode so that weld current flowing through the conductors tends to move them apart to apply pressure on the movable electrode, a magnetic core encircles the conductors. The movable electrode 35, Fig. 1, is carried on the piston-rod of a pneumatic or hydraulic cylinder 20 and welding current from a source 12 is supplied to the electrode by parallel conductors 44, 46 and bus-bar 45 while current is supplied to the fixed lower electrode 16 by conductors 18, 19. The conductor 46 is flexible to allow movement apart of the conductors 44, 46 which are surrounded by a magnetic core 40 to concentrate the flux. Both conductors or only the connecting portion may be flexible and a control winding or windings may be provided on the core. In operation the electrode 35 is pressed on the work by the cylinder 20 and when welding current flows the conductors 44, 46 are urged apart to increase the pressure on the work. In a modification, the upper busbar is bifurcated to accommodate the piston-rod and two U-shaped flexible conductors are provided, one on each side of the piston-rod, to extend from the bus-bar to a connector carried on the piston-rod. Each U-shaped conductor is surrounded by a magnetic core. Instead of a U-shaped conductor, a rigid upper conductor connected to a lower flexible conductor may be used. A single control winding on the magnetic core may saturate the core to decrease the intensifying effect thereof but two windings may be used to increase the intensifying effect. In another embodiment the piston-rod 23c, Fig. 4, slidably receives a rod 67 on the electrode holder 33a with a rubber washer 75 between the rod and holder. Upper conductors 71 secured to the rod are connected by flexible conductors 72 to lower conductors 73 carried on the holder 33a. Cores 40d surround both conductors 71, 73. In operation the rod 23c is moved to apply pressure to the work and when welding current flows the conductors 71, 73 repel to increase the pressure. The washer 75 may be omitted using the air above the rod 67 as a cushion.
Patent GB-1282992-A (GB)
Title: Process for concentrating polymer solutions by evaporation
Inventor: VERNALEKEN HUGO
IPC: B01D3/06
Filed: 1970-04-15
Abstract: 1282992 Separation of solvent from polymer solutions FARBENFABRIKEN BAYER AG 15 April 1970 [25 April 1969] 17949/70 Heading B1B Solvent is separated from a solution of a polymer by heating it under pressure and expanding the hot solution through a nozzle into a tube 2 which is externally heated so that there is a temperature gradient in the direction of flow, whereby gradual vaporization of solvent and increase in vapour-velocity take place as the solution flows through the tube. The temperature is raised in such a way that there is no boiling with the formation of bubbles from any excessive temperature difference between the polymer solution and the tube wall. The vapour-velocity may reach the velocity of sound at the tube-outlet. The tube shown has two heating zones 3a and 3b. The vapour is separated from the molten polymer in cyclone 6; and the vapour then flows to condenser 10. The last traces of solvent are removed from the molten polymer as it is discharged from the apparatus by worm 5. The evaporation tube 2 may increase in cross-section in the direction of flow. An example relates to the separation of methylene chloride and chlorobenzene from a polycarbonate.
Patent GB-640271-A (GB)
Title: Improvements in boiler feed water heaters
IPC: F22D1/02
Filed: 1947-07-08
Abstract: 640,271. Feedwater heaters. VERGOTTIS, P. P. July 8, 1947, No. 17967. Convention date, April 3, 1946. [Class 64(i)] A boiler feedwater heater comprising a bank of water tubes 32 connected at their opposite ends to headers 22, 24 and heated by combustion gases is pivotally mounted at 65 so that it can turn under stresses due to heat expansion and contraction. In the form shown, two such heaters 10, 12 are connected together and to the walls of the boiler flue or smoke box by pivotal links 74, 80. In each heater, the headers are connected together by rods 26, and are subdivided by partitions 34, 36 which cause the feedwater to take a sinuous course through the tubes from the inlet 30 to the outlet 35. Drainage plugs 90 are provided. The supply pipe 18 is connected to the inlet 30 of one heater and to an air vessel 40 with a safety valve 48 and air and water outlet pipes 58.
Patent GB-180476-A (GB)
Abstract: 180,476. Dick, Ltd., R. & J., and Todd, D. March 21, 1922. Universal joints, discs for.-A disc having a central bore and made of laminated fibrous material impregnated with an adhesive agent, is covered with a radial wrapping of knitted or woven fabric in the form of a tube. In the construction shown, the disc A has a central bore E and bolt holes F, and is suitable for the disc of a flexible coupling. A radial covering B, of knitted cotton, flax, or other yarn in the form of a tube of regular diameter is applied by first passing the tube through the hole E so that one end of the tube does not quite protrude from the disc, and the other end of it is turned inside-out and stretched over the rim, after which it is again passed through the central bore thus completing the first ply; the process is continued until the required number of plies have been added. The wrapping is impregnated with an adhesive agent, and the completed disc may be heated and pressed. The wrapping covering the bolt-holes is then pressed in from each side so as to overlap and cover the edges of the holes.
Patent GB-569150-A (GB)
Title: Improvements in or relating to methods of sealing metal to glass
IPC: H01J5/26
Filed: 1943-11-02
Abstract: 569,150. Uniting metal to glass. STANDARD TELEPHONES & CABLES, Ltd., and WINGENT, T. W. Nov. 2, 1943, No. 18108. [Class 36] Metal is sealed to glass by processing the metal and bringing it and the molten glass into contact, separating them so that some of the glass adheres to the metal, and then allowing the glass to solidify. The metal may first be processed as by borating, oxidizing or electro-depositing, and the sealing may be carried out in nitrogen. The cooling of the metal after dipping may be accelerated by water or air blast. As shown in Fig. 6, a metal tube 1 has gathered a blob 4 of molten glass 3 from the vessel 2 and this blob may then be blown out into a bulbous or other shape. Instead of dipping the metal into the molten glass, a plunger 10, Fig. 11, may be brought down within the tube 1 and into the molten glass to force the glass up to the tube, the plunger then being withdrawn. Flat plates, rods, or wires may be similarly sealed to glass.
Patent GB-915232-A (GB)
Title: Improvements in or relating to rubber-base adhesives
IPC: C09J115/00
Filed: 1961-05-18
Abstract: A synthetic rubber adhesive is made by reacting a synthetic rubber with a halide of a polyvalent metal, forming a solution of the product and distributing a modifying resin therein.  The modifying resin may be present in amount from 5 to 200 parts per 100 rubber. Specified rubbers are butadiene acrylonitriles, butyl rubber and polychloroprene.  Specified halides are those of aluminium, antimony, boron, cadmium, chromium, cobalt, copper, iron, lead, magnesium, manganese, nickel, tin and zinc with zinc chloride preferred. Specified modifying resins are phenolaldehydes, resorcinolaldehydes, a cresol-formaldehyde tung oil complex, phenol-furfural resin, wood rosin, polymerized cashew nut shell liquids, coumaroneindene resins and a vinyl chloride-vinyl acetatemaleic acid terpolymer.  Specified solvents are toluene, methyl ethyl ketone, acetone and aliphatic hydrocarbons.  The rubber and halide may be reacted in a rubber mill or in a solution of the rubber.  Other usual additives such as pigments and fillers (titanium dioxide, silica) and antioxidants (hydroquinone monobenzylether) may also be present.
Patent GB-1516002-A (GB)
Title: Monolithically integrated threshold switch
IPC: H03K5/08
Filed: 1976-05-04
Abstract: 1516002 Transistor switching circuits ITT INDUSTRIES Inc 4 May 1976 [12 May 1975] 18150/76 Heading H3T In a hysteresis switch comprising a pair of multicollector transistors T1, T2, a first collector of T1 is coupled to the base and one collector of T2 and to a current source S2, another collector of T2 is coupled to the base of T1 and to an input resistor R and further current sources S 1 , S 1 <SP>1</SP>, S 1 <SP>11</SP>...are coupled to further collectors which provide outputs, the currents I, from these further current sources being less than that I 2  from the source S 2 . The value of the resistor is determined by the expression where U o  is the upper switching threshold and U BE  is the base-emitter threshold of the transistors. Assume initially T 1 is off then the current from input E flows into one of the collectors of T2 and the current I 2  flows into the base of T2. As the input voltage increases a point is reached at which T2 can draw no more current, and some input current flows to the base of T1 to turn it on, the positive feedbacks resulting in T2 turning off. If the input voltage is now reduced, T I will remain conductive until the input voltage falls below the base-emitter threshold of T1 whereupon base current can no longer flow, and the circuit switches back to its initial state.
Patent GB-380822-A (GB)
Title: Manufacture of cellulose esters
IPC: C08B3/00
Filed: 1931-06-23
Abstract: Natural cellulose, preferably in swollen condition, is impregnated with a sodium salt of a weak acid, dried, and esterified to a high degree by means of an aliphatic acid anhydride.  More energetic reaction conditions are necessary than are required when a potassium salt is used (see Specification 353,978).  In an example, cotton is treated with mercerizing caustic soda lye, centrifuged, immersed in an aqueous solution of sodium acetate, dried, and esterified by means of acetic anhydride at the boiling temperature.  The product retains its original fibrous structure.  In a further example, wood pulp is soaked in mercerizing caustic soda lye neutralized with acetic acid, dried, and esterified as in the previous example.  The use of a tertiary base as catalyst in the esterification process is mentioned. Specification 343,889 also is referred to.
Patent GB-596076-A (GB)
Title: Refrigerated display case
IPC: A47F3/04
Filed: 1945-07-17
Abstract: 596,076. Refrigerators. TRIGGS, W. W. (Hussmann-Ligonier Co.). July 17, 1945, No. 18330. [Class 29] An open-topped refrigerated display case has a rear wall 3 extending higher than the front wall 4, 8, a top wall 5 terminating short of the front wall, and a baffle or curtain wall 22 depending from the top wall in front of a refrigerating coil 19 to a point above the level of the top of the front wall so as to cause spillage of cold air over the top of the front wall and consequent infiltration of outside air into the case, as shown by the arrows. The baffle 22 is adjustable to a lower position in which an upper hook 30 on the baffle engages a fixed projection 31 and its lower edge is below the top edge of the front wall so that a still layer of stratified air is formed above the display space 18 and the circulation of air takes place only within the case. A glass wall 8 forms the upper part of the front wall and baffles 25, 28 direct the air flow over the coils 19. Drains 24, 27 collect moisture condensed on the baffles. The goods are displayed on an adjustable rack 11 and stored in a space 15 accessible through a door 16. A lamp 9 and reflector 10 are provided. With the baffle 22 in the position shown the temperature and humidity are relatively high, e.g., for vegetables ; lowering the baffle decreases both temperature and humidity, e.g., for meats and dairy produce. A drain is provided at the bottom of the case and a mirror 23 is mounted on the front face of the baffle 22. Specification 596,075 is referred to.
Patent GB-572163-A (GB)
Title: Improvements in or relating to remote control or indicating systems
IPC: G08C19/02
Filed: 1943-11-05
Abstract: 572,163. Resultant-field apparatus. STANDARD TELEPHONES & CABLES, Ltd., and TOWNER, S. H. Nov. 5, 1943, No. 18379. [Class 40 (i)] [Also in Group XXXVI] An instrument for indicating angular position comprises a permanent magnet C pivoted at the centre of a continuous ring E of magnetisable material in which poles are induced by means of upper and lower coils A, B, Fig. 1, mounted on cores G having extending polepieces attached to or in close association with the ring E at four equally-spaced points. The coils are connected to the ends and the slider of a potentiometer D in the manner shown. In a modification, Figs. 3, 4, four coils 1 ... 4 are mounted on a cruciform core G, the pairs of coils on opposite limbs being in series and connected to four equallyspaced points of a circular potentiometer D, Fig. 5, having a pair of diametrically-arranged sliders. A three-limbed core may also be used. In order to damp the movement of the magnet a copper ring may be inserted within the ring E. The conditions for maximum sensitivity are discussed.
Patent GB-1169957-A (GB)
Title: Process for the production of printing formes
Inventor: SEIBERT HEINRICH
IPC: B41M5/035
Filed: 1967-04-21
Abstract: 1,169,957. Printing formes. AGFA-GEVAERT A.G. 21 April, 1967 [4 May, 1966], No. 18385/67. Heading B6C. [Also in Division G2] Printing formes are prepared by exposing to infra-red radiation, an original whose image parts absorb infra-red light, a receptor layer, and a supported layer containing a sublimable dye and, as binding agent, a polycarbonate obtained from a diphenylolalkane; the three layers are in contact during exposure and are then separated so that dye corresponding to the image parts is transferred to the receptor layer which can serve as a printing forme for use in thermographic copying. The dyes preferably sublime at 140-180‹ C. and correspond to those used in Specification 951,987; the dyed layer, of thickness 10 to 20Á. preferable also contains a plasticizer to loosen the cohesion of the layer, and a further synthetic plastic, e.g. P.V.A. to improve adhesion of transferred dye to the receptor sheer. The dyer layer is also preferably preheated to 120‹ C. before exposure. The exemplified polycarbonate is obtained from 2,2-bis-(hydroxyphenyl) propane.