baber/WOPTO huggingface dataset:
Patent GB-1197783-A (GB)
Title: Paint Compositions.
IPC: C09D5/00
Filed: 1967-05-03
Abstract: 1,197,783. Synthetic resin based traffic paint. MINNESOTA MINING & MANUFACTURING CO. 3 May, 1967 [4 May, 1966; 12 April, 1967], No. 20657/67. Headings C3B, C3P, and C3R. [Also in Divisions B2 and E1] A quick-drying road paint comprises (A) a mixture of (1) a paint base which includes a solution of a non-volatile organic resinous binder in a volatile solvent and which (a) is liquid at 4‹ to 43‹ C. but (b) forms a non-tacky paint film when applied as a paint film under ambient conditions; and (2) a film-forming thermoplastic modifying material which (a) is solid at 4‹ to 43‹ C., (b) is substantially insoluble in the above resinous binder solution at 4‹ to 43‹ C. but (c) forms a substantially homogeneous (on visual inspection) finely subdivided liquid blend therewith when heated to a useful elevated temperature between 65‹ and 260‹ C., (d) forms, in combination with the binder solution, a firm self-supporting non-tacky film within 40 seconds of applying the combination at said useful elevated temperature to a substrate at least 17‹ C. colder, and (d) comprises at least 20 wt. per cent of the organic solids in the paint; and (B) 20 to 500% of pigments by weight of organic solids in the paint. Ingredient (2) may be melt blended with pigments, fillers and other additives, e.g. reflective elements, cooled and ground to below “-inch, preferably 20 to 325 U.S. mesh for mixture with ingredient (1). Ingredient (1) may be a conventional traffic paint and (2) may be a dimerized fat acid/alkylene diamine polyamide of M.W. 2000 to 3000, an ethylene/vinyl acetate copolymer or polyvinyl butyral. The following ingredients are included in the specific examples:-phenol modified pentaerythritol resin ester, linseed and tung oils, chlorinated rubber, lecithin solution in naphtha and xylene (pigment dispersant), dimethyldioctadecyl ammonium bentonite (thixotrope), 70 mesh glass beads, magnesium silicate, TiO 2 , CaSO 4 , oxime, epichlorohydrin, diglycidyl ether of bisphenol A, toluene, heptane, methanol, metal naphthenate in mineral spirits, "Versamid" (Registered Trade Mark) polyamide resin 725 and 950, chlorinated naphthalene, formaldehyde-cyclohexanone resin (M.W. 500, M.P. 73‹ C.), silicone oil, oil-modified polyurethane (glycerolized linseed oil/ditolyl diisocyanate reaction product), diatomaceous silica, mica, soya oil / phthalic anhydride alkyd, CaCO 3  and ethylene / vinyl acetate copolymer (82/18). General reference is made to an embodiment wherein the paint base comprises an epoxy resin and the hardening agent is encapsulated by the thermoplastic modifier until this is melted in use.
Patent GB-964953-A (GB)
Title: Circuit arrangement for the protection of semi-conductor rectifiers
IPC: H02H3/02
Filed: 1963-05-23
Abstract: 964,953. Converting; protective arrangements. LICENTIA PATENT-VERWALTUNGS G.m.b.H. May 23, 1963 [May 23, 1962; July 3, 1962], No. 20659/63. Headings H2F and H2K. A protective circuit for one or a group of semi-conductor rectifiers in which a fuse is connected in series with the rectifier(s) has a circuit arrangement connected in parallel with the fuse and rectifier(s) which becomes conductive upon the rupturing of the fuse. In both Figures an A.C. source 1 supplies a circuit including a load 4 and inductance 6 through a controlled or uncontrolled rectifier 3. In Fig. 1 the fuse 2 and rectifier 3 are shunted by the device 5 which may be a Zener diode and ordinary diode, or two Zener diodes in series opposition. In Fig. 2, the fuse assembly 50 has a fuse wire 52 bridging a spark gap between electrodes 51, 53 and an auxiliary electrode 54 so arranged that, when the fuse ruptures, the arc is transferred from electrode 53 to electrode 54 and the arc current does not pass through the rectifier. A bridge circuit may be protected by a single fuse on the A.C. side or, if the load is inductive, by fuses on both sides (Figs. 3 and 4, not shown). A three-phase arrangement is described (Fig. 5, not shown).
Patent GB-805673-A (GB)
Title: A process for accelerating the sedimentation of coarse and colloidal dispersed solids from coal washing waters
IPC: B03D3/00
Filed: 1956-07-04
Abstract: A process for accelerating the sedimentation of coarse and colloidal dispersed solids from coal-washing waters comprises adding a polymer or copolymer, soluble or swellable in water, which contains carboxylic groups or carboxylic acid anide groups or both, the carboxylic groups (where present) being present as such, or wholly or in part as salts.  Preferred reagents are: polyacrylic acid, polymethacrylic acid and copolymers of maleic acid with vinyl ethers or vinyl esters, or their derivatives.  The polymers should have a viscosity, in 10 per cent. aqueous solution at normal temperature, of at least 10 centipoises, preferably 100 centipoises.  From 0,1 gram to 10 grams of polymer per cubic metre of the dispersion should be added.  In an example there is used the sodium salt of the copolymer of vinyl methyl ether and maleic anhydride.  The acid and alkyl radicals in the vinyl esters or ethers should have a low molecular weight; accordingly, the esters, vinyl formate, acetate, propionate and isopropionate; and vinyl methyl, ethyl, propyl and isopropyl ethers, are preferred. Where the reagent is to contain a salt a suitable base is derived e.g. from the alkali metals, ammonia, and amines which contain only a few carbon atoms in the molecule. Specification 773,716 is referred to.
Patent GB-955303-A (GB)
Title: New sulphonamides and process for preparing same
IPC: C07D231/42
Filed: 1962-05-29
Abstract: C2C The invention comprises sulpha-pyrazole compounds of the formula: <FORM:0955303/C2/1> wherein R is an isopropyl, n-butyl, secondary butyl or pentyl-(3) group and salts, such as alkali-metal, alkaline earth metal or earth metal salts, thereof, together with the corresponding intermediate 2-substituted-3-p-acetylaminobenzenesulphonamide-pyrazoles. The sulpha-pyrazoles are made by reacting a p-acetylaminobenzenesulphonyl chloride with a 2-R-3-aminopyrazole and hydrolysing the resulting acetylsulphanilyl-pyrazole. 2-R-3-Amino-pyrazoles wherein R is isopropyl, n-butyl, or pentyl-(31) are made by hydrolyzing and decarboxylating the corresponding 4-carbethoxy compound. 2-Secondary-butyl-3-amino pyrazole is made by heating the 4-cyano compound with concentrated hydrochloric acid. Pharmaceutical and veterinary preparations for the treatment of bacterial infections comprise the above sulpha-pyrazole compounds in admixture or conjunction with an organic or inorganic, solid or liquid carrier suitable for enteral, parenteral or local administration.  The preparations may suitably take the form of tablets, dragees, ointments, creams, solutions, suspensions or emulsions, or, for veterinary use, an animal feedstuff or feedstuff additive.
Patent GB-261112-A (GB)
Title: Method of and apparatus for centrifugally casting hollow metal bodies
IPC: B22D13/02
Filed: 1925-08-18
Abstract: 261,112. Croad, A. K., (Sand Spun Patents Corporation). Aug. 18, 1925. Casting - machines; metal - pouring. - A centrifugal casting- machine is moved from an inclined to a horizontal position during pouring. The mould 11 is supported by rollers 9 engaging flat and grooved rings 10 and rotated by a variable-speed electric motor 25 axially movable to bring a spring- mounted cross-key 27, carried by its driving shaft, into engagement therewith. The motor and rollers 9 are carried by a frame 1 pivoted at 2 and normally tilted into the position shown by an hydraulic piston 6 controlled by a three-way cock 76 connected to a supply 73 and exhaust. A pivoted hood 12 carries adjustable spring- pressed rollers 14, to hold the mould on to the rollers 9, and a funnel 45. This is pivoted so that it can be swung aside for removal of the mould and carries a tilting ladle 48. A link 57 connects an arm 56 of the ladle to a lever 53 which is moved by engagement with the falling frame 1 to cause the ladle to discharge the molten metal into the funnel. For pipes under 4 in. diameter the link 57 may engage a cam slot 64 in the lever 53 and be moved along this slot by a link 60 in order to vary the speed of tilting and give a more constant rate of pouring. The time which the mould takes to fall should be about 20 to 35 seconds and is controlled by a throttle valve 84 and indicated at 82 by the pressure in a reservoir 81 which has a restricted outlet. In order to dry the mould as described in Specification 261,113, it is rotated slowly, for instance at 50 r.p.m., during the pour, by operating a controlling switch 66. When the horizontal position is attained or, for viscous metal, just prior to this as indicated by a lamp 86 automatically lighted by the closing of a switch 90, the speed is increased, for instance to 1250 r.p.m., to spread the metal. After about 2 minutes the speed may be reduced to 900 r.p.m. for 3 minutes. The moulds are introduced into and removed from the machine by a track 35 pivoted to a support 36, Fig. 3, and raised, when in use, by hydraulic pistons 40 controlled by a three-way cock 77, Fig. 1. A roller 38, Fig. 3, on the curved end 37 of the track engages the inside of the hood 12 and raises it out of the way. A pawl 39 prevents the mould from running out of the machine until the operator desires. In a modification, the motor does not move axially but is connected to the mould 11 by pivoted dogs 113, Fig. 11, pressed by springs 116 into recesses 114. The dogs are withdrawn by a ring 115, Fig. 5, engaging the tails and operated by a cylinder 127. In this modification, also the rollers 9, 14 all have flat rims and the latter have springs 103 adjusted by a screwed sleeve 107 and are adjusted in position by screwed spindles 101.
Patent GB-398322-A (GB)
Title: Improvements in electric tumbler switches
IPC: H01H23/16
Filed: 1933-03-11
Abstract: 398,322. Tumbler switches. BAIN, R., 25, Beaudesert Road, Handsworth, Birmingham, and ALLDAY, N., The Nest, Streetly Lane, Four Oaks, both in Warwickshire. March 11, 1933, No. 20762. [Class 38 (v).] A tumbler switch has a movable contact bridge 15 of the form shown in Fig. 4, pivoted on a pin 29 and movable in a plane parallel to the plane of the base. The contact bridge 15 is operated by a tumbler 16 through the medium of a telescopic link having a deadcentre compression spring 42.. Sparking between the fixed contacts 13 and the operating mechanism is reduced by the provision of an upstanding wall 43 which encloses the operating mechanism. A metal clip 31 carried by the contact bridge affords extra pivotal support. The switch may be flush mounted in a shallow recess or provided with a shallow cover for surface mounting. In a modification, the operating lever carries a depending forked projection engaging with lost motion on either side of the movable contact member to give positive actuation.
Patent GB-932827-A (GB)
Title: Improvements in or relating to the manufacture of dimethylformamide
Inventor: CAMPBELL GEORGE REID
IPC: C07C233/00
Filed: 1961-06-08
Abstract: Dimethylformamide is produced by mixing calcium formate with an aqueous solution of dimethylamine sulphate, removing the calcium sulphate formed, and heating to distil off the water and cause amide formation.  The reactants are preferably mixed in stoichiometrically equivalent quantities, the dimethylamine sulphate being obtained by absorbing dimethylamine in dilute sulphuric acid.  The product is recovered mainly from the distillation residue, but also from the aqueous distillate.  The amount of water in the system may be from 200 to 300 grams per gram molecule of calcium formate used.
Patent GB-767326-A (GB)
Title: Improvements relating to high frequency heating equipment
Inventor: TIBBS CHRISTOPHER EVAN MUNDELL
IPC: H05B6/46
Filed: 1954-07-16
Abstract: 767,326. R.F. couplings. RADIO HEATERS, Ltd. July 12, 1955 [July 16, 1954; Dec. 1, 1954[, Nos. 20821/54 and 34847/54. Class 40(7) Coupling in the output circuit of highfrequency dielectric heating equipment is effected by means of a single turn metal strip coil mounted on supports at its four corners and connected as part of the generator " tank " circuit and a secondary coil consisting of a single turn of metal strip surrounding the first coil and threaded through the gap between the pairs of supports. In one embodiment the tank circuit includes a capacitor comprising interleaved plates 1 and 2. Plates 1 are supported on insulators 3 and plate 2 supported on further insulators attached to the casing 10 and not visible in the Figure. Connected to the plates 1 is a bracket 5 of considerable width on which are mounted a pair of conductive pillars 6 supporting the corners of one end of strip metal coil 7. The other end of coil 7 is supported by a similar pair of pillars 8 on bracket 9 attached to plate 2. The secondary coil 14 extends from output terminal 13, mounted on insulating panel 12, round coil 7 and between the pairs of pillars 6 and 8 and is then attached to earthed work table 11. In a modification (Figs. 3 to 5, not shown) the high potential end of the secondary coil is attached toa metal rod carrying the movable plates of a variable condenser. Interleaved fixed plates are connected together and to the output. The condenser is adjusted by means of a worm drive and insulating strips connecting link. If the length of the tank circuit is considerable intermediate supports may be provided necessitating the use of two or more secondary coils which may be in parallel or coupled to independent outputs.
Patent GB-144147-A (GB)
Title: Improvements in holders for cigars, cigarettes and the like
IPC: A24F13/08
Filed: 1919-08-25
Abstract: 144,147. Duncan, C. Ang. 25, 1919. No Patent granted (Sealing fee not paid). Tobacco pipes and cigar and cigarette holders. -To facilitate the discharge of the fag-end or charge, the mouth of the holder is made of scoop shape and is closed by a hinged segmental section B with overlapping clipping sides, or by a sliding sleeve E, Fig. 4.
Patent GB-720517-A (GB)
Title: Improved process for the production of titanium
Inventor: QUIN JAMES PATERSON
IPC: C22B34/12
Filed: 1952-08-20
Abstract: A process for the production of titanium comprises reducing titanium tetrachloride with metallic sodium and maintaining the titanium product at a temperature above 800 DEG  C., e.g. 850-900 DEG  C., for at least 15 minutes, the entire process being effected in an atmosphere inert to the titanium.  The high temperature treatment may take place in the presence of the sodium chloride formed in the reaction and which thus supplies at least a part of the heat required for maintaining the temperature.  The resulting titanium sponge is less susceptible to attack by air or water during subsequent operations.
Patent GB-1179992-A (GB)
Title: Aerodynamic Shield Device for VTOL Jet Aircraft Engine Exhaust.
Inventor: FEDER AARON
IPC: B64C29/00
Filed: 1968-05-02
Abstract: 1,179,992. Vertical lift jet engine - air intake. NORTHROP CORP. May 2, 1968, No.20952/68. Heading F1G. The invention relates to an aircraft having a vertical lift jet engine in which means are provided for creating an aerodynamic shield which serves to prevent engine exhaust gases from passing into the air intake of the engine, there being a plenum chamber located between the engine exhaust and the engine air intake, means for supplying air under pressure to the plenum chamber, the air discharging therefrom through narrow slots to create the aerodynamic shield. The aircraft shown has three vertical lift engines 12a, 12b, 12c also two forward thrust engines 13a, 13b and a plenum chamber in the form of a tubular member 15 is located around the air inlet openings of the three engines, a series of elongated slots 16 being formed around the outer periphery of the tubular member. In use air under pressure is tapped from an engine compressor 20 and passes through line 17 to the chamber 15, the air discharging therefrom through the slits 16 to form an aerodynamic shield as indicated at 22, the shield forming a barrier between the engine exhaust gases 30 reflected from the ground and the air passing into the intakes as indicated by arrows 35.
Patent GB-474646-A (GB)
Title: Improvements in or relating to racquet presses
IPC: A63B60/44
Filed: 1936-07-29
Abstract: 474,646. Racket presses. DUNLOP RUBBER CO., Ltd., and VAUGHAN, G. July 29, 1936, No. 20982. [Class 132 (ii)] In a racket-press, means are provided for varying the location of the pivoted end of a lever component of the pressure applying means to adapt the press to rackets of various thicknesses. Brackets 3 are attached to the lower frame 2 of the press and are slidably connected to the upper frame 1 by brackets 9 which also retain the ends of bowed spring strips 7, slidably engaged in longitudinal grooves 8. A pressure applying lever 5 is provided with cranked or cam portions 6 which force the frames 1 and 2 together when the lever 5 is actuated. A preferably U- shaped slot 4 in each bracket member 3 allows of varying the initial distance between the frames according to the location of the ferrules 10 of the lever 5 in the slots. Specification 298,810, [Class 132 (ii)], is referred to.
Patent GB-720343-A (GB)
Title: Improvements in or relating to means for lubricating machinery
IPC: F01B31/10
Filed: 1952-08-21
Abstract: 720,343. Engine stop-gear. HARRIS, J. Aug. 19, 1953 [Aug. 21, 1952], No. 20987/52. Class 122 (4). [Also in Group XXXIV] In a lubrication system for an engine or other machine an oil pump driven by a moving part of the machine delivers oil in excess of requirements into one end of a pressure cylinder from which the oil is fed to sight drip feed or other lubricators and a spring-loaded piston in the cylinder is adapted to be displaced by the oil to uncover one or more overflow ports so long as the oil supply pressure is maintained by the pump at a pressure determined by the loading on the piston, failure of the oil supply from the pump allowing the spring to move the piston to close the overflow ports and operate a warning device and/or stop the machine. A cylinder 10, Fig. 1, is provided with a non-return valve 11 through which oil is delivered by a pump 12 drawing oil from a reservoir surrounding the cylinder. Some of the oil is discharged through a pipe 14 to drip feed lubricators, and excess oil forces upwardly a spring-pressed piston 15 until overflow ports 19 are uncovered. The piston has a piston-rod 17 which is adapted to control the operation of a warning device and/or means fer stopping the engine. The rod projects through a gland nut 37, Fig. 2, on the cover of the reservoir 20 for engagement with a lever 34 pivotally mounted at 35 on the cover. The outlet from the pressure cylinder in the reservoir 20 is provided with a cock 26 which may be turned downwards to connect the cylinder with a channel 28 feeding drip lubricators 29, or turned upwards to connect the cylinder with a hand pump so that the cylinder can be filled with oil before the machine is started. As the piston rises in the cylinder the piston-rod raises one end of the lever against the action of a spring 42 and lowers the other end so that a tappet 45 opens a valve 46 controlling fuel supply to the engine. At the same time a lever 48 is raised, whereby the cranked end 25 thereof is drawn away from the path of a pivoted striker 24 mounted on a pulley 22 which serves to drive the pump in the reservoir 20. If the pressure in the cylinder is reduced the piston-rod is lowered allowing the end 25 to obstruct the striker, causing it to strike a warning bell 23. Further downward movement of the piston-rod allows the tappet 45 to be disengaged from the valve 46, so that the valve closes and the machine is stopped.
Patent GB-386256-A (GB)
Title: Improvements in and relating to joints for artificial limbs
IPC: A61F2/60
Filed: 1932-07-26
Abstract: 386,256. Joints for artificial limbs. DESOUTTER BROS., Ltd., 73, Baker Street, London, and WEBB, G. H., 123, Whitchurch Gardens, Edgware, Middlesex. July 26, 1932, No. 21066. [Class 81 (ii).] In a pivotal joint of, or for the attaching in position of, an artificial limb, one of two faces of the joint movable relatively in parallel planes is provided with a removable wearing facet of hard material adapted to bear either on the other face or on another such facet carried thereby, said facet or facets being movable with the appertaining face or faces of the joint. A bearer 17, attached to the bucket portion of an artificial leg, is made for example of steel or aluminium alloy and is formed into two limbs 18, 19 having bores for a bearing pivot which carries a depending arm or the like 20 such as usually carried by a belt on the wearer. The inner surfaces of the limbs 18, 19 carry facets formed by discs 21 of phosphor bronze, steel or other hard metal, provided with central bores 22, and pins 23 which enter bores 24 in said limbs. In a modification, Fig. 9, the facets are stamped with a flange 27 which engages a stepped part on the inner face of the limb. A blank may be shaped to form a double facet, being bent at its centre and carrying a pin 28, Fig. 11, which enters the base of the fork. In place of the pin, lugs may be provided which are bent down to engage the exterior of the fork. The facets may be provided on both pivoted members and the invention is applicable to lever or link members having male ends.
Patent GB-460298-A (GB)
Title: Improvements in or relating to electric capacity controlled devices applicable for indicating the approach of a body
IPC: G08B13/26
Filed: 1935-07-25
Abstract: 460,298. Indicating proximity of bodies. ALEXANDRA, A. C. July 25, 1935, No. 21105. [Class 40 (v)] A capacity-controlled system for switching, indicating, controlling, signalling, alarm, lighting, and other installations adapted to be actuated by capacity variation caused by the approach of a body or person comprises two valves a, b with the plate of each coupled to the grid of the other through condensers C3, C4, so that continuous oscillations are maintained at a frequency determined by a tuned circuit formed by an inductance L and condenser C1. A capacity responsive device is connected across one of the condensers C3, C4, or one of the resistances, or across the whole or part of the tuned circuit L, C1. Change of capacity due to the approach of a body or person, modifies the current in part of the circuit, thereby actuating a relay. The invention is applicable for giving warning of the approach of a person to a strong-room, safe, &c., for causing the illumination of a shop window on the approach of a customer, or for automatically opening doors when anyone approaches. The capacity-responsive element may be a wire or other conductor supported above the track for automatic signalling in response to the passage of a railway train or other vehicle.
Patent GB-149843-A (GB)
Title: Improvements in or relating to propellers
IPC: B64C11/04
Filed: 1919-08-28
Abstract: 149,843. Schwartz, J. Aug. 28, 1919. Screw propellers. - In a three-bladed air propeller, the blades are fixed in three tangential pockets in a metal boss, and are formed of laminated wood, the grain of adjacent ply elements running in different directions. The boss a, Figs. 2 and 4, is provided with tangential pockets a<1> which are enlarged towards the bottom, and one wall e of the pocket is made detachable. To ensure the correct position of the plate e, it is provided with tongues e<1> engaging in corresponding grooves in the face walls, d. Removable screw bolts g are provided passing through the side walls e, f and the end of the blade. The blade is preferably built up of seven thin laminµ, Fig. 6; the course 1 has its grain running radially, course 2 has the grain running diagonally, course 3 radially, course 4 transversely, course 5 radially, course 6 diagonally, but opposite to course 2, and course 7 radially. The blade is made with a rhomboidal section, Fig. 8, and the necessary curvature is given by bending instead of by cutting.