baber/WOPTO huggingface dataset:
Patent GB-800744-A (GB)
Title: Improvements in or relating to the production of thermoplastic compositions
Inventor: EDGERLEY PETER GEORGE
IPC: C08L7/00
Filed: 1956-02-22
Abstract: Butadiene with lesser amount but not less than 10 per cent of its weight of a copolymerizable monoethylenically unsaturated compound is polymerized in aqueous dispersion in a stirred closed vessel until 60-90 per cent by weight of the monomeric mixture has been converted to copolymer, additional monomeric monoethylenically unsaturated material copolymerizable with the residual monomers is then added in such amount that there is present a greater proportion by weight of monomeric monoethylenically unsaturated material than polyolefinic monomer and polymerization is continued to completion.  Suitable vinylidene monomers are styrene, a -methyl styrene, vinyl carbazole, vinyl acetate, vinyl pyridine, acrylonitrile, methacrylonitrile, methyl acrylate, methyl methacrylate, methacrylamide, methacrylic acid, and methyl a -chloroacrylate. The products are similar to a mixture of a rubbery copolymer of butadiene and for example styrene with a resinous copolymer of styrene and butadiene, and are useful for reinforcing natural rubber, compositions with rubber preferably contain 30-40 parts by weight per 100 parts of natural rubber.  In Example (1) details are given of a specific vulcanization recipe for such a composition containing natural rubber.  The amounts of monomers added in the first and second stages are preferably chosen so that the final product contains 40 to 95 per cent by weight of resinous copolymer chains and correspondingly 60 to 5 per cent by weight of rubbery copolymer chains.  0.05 to 1 per cent based on the monomer weight of a polymerization modifier is preferably added either wholly in the first stage or part in the second stage, examples being di (sec. butyl) disulphide, di (2-methyl butyl) disulphide, dialkyl xanthogen disulphides, diortho dinitrophenyl disulphide and dodecyl mercaptan.  One or more emulsifying agents are also added either wholly in the first stage or part in the second stage, examples being sodium lauryl, oleyl and cetyl sulphates, sodium salts of sulphonated castor oil or sulphonated or sulphated methyl oleate, sodium oleate, palmitate or stearate and the hydrogenated or dehydrogenated rosin acid soaps.  Catalysts include hydrogen peroxide, potassium persulphate, cumene hydroperoxide and benzoyl peroxide, with the latter two a heavy metal salt and sorbose or fructose may be added.  Water-soluble peroxide catalysts can be used at 30-60 DEG  C. and redox catalysts at lower temperatures down to 5 DEG  C.  At temperatures below 0 DEG  C. a compound such as methanol must be added to prevent freezing.
Patent GB-525372-A (GB)
Title: Cover or bottom provided with packing material for preserve tins or like containers
IPC: B65D8/20
Filed: 1939-02-20
Abstract: 525,372. Coating surfaces. THOMASSEN, T. Feb. 20, 1939, No. 5589. Convention date, Aug. 27, 1938. [Class 95] [Also in Group XXII] Prior to a can end 1 being secured to a can body by rolling the edge of the can end about the edge of the body, the marginal flange or rim 2 is coated with enamel or varnish which is then heat treated so as to harden it superficially, the enamel below the surface remaining soft and viscous so that an hermetic seal is obtained. The enamel collects in the corners 6 and 7 in relatively thick layers as shown in Fig. 3. When the outer edge of the can end is given a preliminary inward bend 5, Fig. 5, the enamel may be applied over the entire surface of the can end which is then rapidly rotated to distribute the varnish as a thin protective coating over the major portion of the cover and as a relatively thick layer in the marginal rim where it is trapped by the portion 5. The subsequent heat treatment dries and hardens the thin protective coating but only superficially hardens the thick coating in the rim.
Patent GB-454761-A (GB)
Title: Improvements in or relating to valve mechanisms for internal combustion engines
IPC: F02F1/24
Filed: 1936-02-25
Abstract: 454,761. Valve gear; regulating. MAINA, J., 35, Maybury Mansions, Marylebone Street, London. Feb. 25, 1936, No. 5615. [Class 7 (vi)] A pair of inlet valves 1, or exhaust valves, are actuated by a cam 21 through a follower 17 engaging both valves and having a central extension 18 sliding in a sleeve 19 and prevented from rotation therein by a key 20 or other means, the follower contacting with tappet heads 3 adjustably screwed into the valve stems and locked in position by coned washers 5 engaging coned flanges 4 on the tappet heads. Projections 9 on the tappet heads engage slots in the valve stems. For adjusting the tappet heads, a forked spanner 16 is engaged with holes 13 formed in downwardly-extending ears 12 on the washer 5, which is then prised away from the tappet head by pressing the spanner 16 downwards. The tappet head is then free to be adjusted by means of a C-spanner 15 which is engaged in holes 14 around the tappet head. The follower 17 may be shaped to actuate more than two valves.
Patent GB-878751-A (GB)
Title: Improved method of detecting flaws in articles
Inventor: LOCKWOOD WILLIAM CLAUD
IPC: G01N21/91
Filed: 1959-02-18
Abstract: 878,751. Detecting surface flaws. ROLLSROYCE Ltd. Feb. 10, 1960 [Feb. 18, 1959; July 8, 1959], Nos. 5647/59 and 23545/59. Class 106 (2). A method of detecting flaws, for example, cracks in a liquid impermeable surface of a body comprises applying a liquid penetrant, for example, a fluorescent liquid penetrant to the surface so that it penetrates into the flaws, employing a finely divided particulate material to remove the penetrant from the unflawed parts of the surface while leaving the penetrant in the flaws and while leaving the surface substantially unimpaired in quality and dimensions, and rendering visible the penetrant which has been left in the flaws. The particulate material may comprise powdered plum stones or powdered walnut shells which may be blown on to the surface to remove the penetrant, or alternatively the penetrant may be removed by barrelling the body in a water-saturated aggregate comprising a mixture of the particulate material and granite or aloxite barrelling chips. The particulate material is then removed by blowing air on to the body or by a cold water wash after which the body is dipped in hot water and dried. The body is then submerged for a period in a powder, for example, silica or talc, which is adapted to absorb or adsorb the liquid penetrant in the flaw. The surplus powder having been removed the powder clearly indicates the flaw or flaws when viewed in a dark room under ultra-violet light.
Patent GB-1270621-A (GB)
Title: Semi-permeable membranes and method of production
IPC: B01D67/00
Filed: 1970-02-05
Abstract: 1,270,621. Semi-permeable coatings; semipermeable membrane. SYBRON CORP. 5 Feb., 1970 [25 Feb., 1969], No. 5648/70. Headings B1X and B2E. [Also in Division B5] An open-structured semi-permeable membrane is obtained by dissolving a neutral, non- cross-linked polymeric binder and an inorganic salt in a common solvent, forming a thin film from the solution, heat and pressure curing the film and lixiviating with a solvent in which only the inorganic salt is soluble so as to remove at least a portion of the salt and impart a desired degree of semi-permeability to the membrane. The inorganic salt may be potassium iodide, sodium iodide, potassium bromide, sodium bromide, potassium thiocyanate, sodium thiocyanate, ammonium bromide, ammonium nitrate, lithium chloride, zinc chloride or anhydrous ferric chloride. It may constitute up to 80% by weight of the binder. The membrane may be removed from the substrate on which the film is formed if so desired. Suitable substrates are woven or non- woven fabrics of wool, polyesters, nylon, cotton, regenerated cellulose, acrylics, polypropylene, isotactic polyethylene, and polyfluorinated hydrocarbons. Numerous suitable solvents are specified. An ion exchange resin such as melamine-guanidine formaldehyde, urea-guanidine formaldehyde, aminated chloroalkylated copolymers of monovinyl and divinyl aromatic hydrocarbons, phenol sulphonic acid-formaldehyde resins, polystyrene treated with mineral acid or carboxylic acid may be present. Suitable binders are polyvinylidene fluoride, vinyl chloride-vinyl acetate copolymers and polyvinylidene chloride. More than one such layer may be formed and the two films may contain different ion-exchange materials or none at all. The coatings may be applied by dipping, spraying or casting.
Patent GB-1429104-A (GB)
Title: Armoured flexible pipe
IPC: F16L11/18
Filed: 1974-02-07
Abstract: 1429104 Armoured flexible pipe INSTITUT FRANCAIS DU PETROLE 7 Feb 1974 [15 Feb 1973] 05696/74 Heading F2P An armoured flexible pipe includes a flexible tubular structure comprising, a succession of rings 2 each having two annular grooves 3, 4 provided in its internal wall near the ends of the ring and separate annular elements interconnecting adjacent rings, the annular elements 5 having a flattened U-shaped cross-section whose arms are respectively engaged with some clearance d in the two annular grooves of adjacent rings. The annular elements may be resiliently deformable by radial compression, e.g. split to facilitate their insertion into the annular grooves. Resilient spacing means, e.g. elastomeric washers may be placed between adjacent rings to maintain a substantially uniform distance between the rings. In a modification, Fig. 5, a shoulder 2a which may overlap a washer 14, limits radial displacement of the ring 2 relative to the axis of the tubular structure so as to prevent the disengagement of adjacent rings. The embodiment shown in Fig. 6 comprises a flexible tubular core 1; the tubular structure covering the core; a traction resistant armouring formed by two helical windings 7 and 8 covering the tubular structure, and external tightening sheaths 9, 10 which do not adhere to one another. The pressure resisting armouring layer may be separated from the traction resisting armouring layer by a layer of material 15 which facilitates the sliding of the armourings on each other.
Patent GB-346908-A (GB)
Title: Improvements in or relating to the manufacture of yeast
IPC: C12N1/18
Filed: 1930-02-20
Abstract: Yeast is improved in leavening power by subjecting it to a subsequent fermentation in nutritive solutions, which preferably contain their sugar in the form of saccharose, dextrose, or laevulose, particularly in molasses solution, which after pre-treatment in known manner are treated with the requisite nutritive substances and filtered.  The yeast which may be of any origin is added in amount from 3-10 times the amount of sugar employed to the nutritive solution diluted to 12-15 DEG  Bg. and neutralized with dilute alkaline solutions until it acquires a hydrogen ion concentration corresponding to a pH value of from 5,8-6,2 and the mixture subjected at temperatures below 27 DEG  C. to a rapid fermentation without aeration, in the course of which all the sugar is fermented in from 1-2 hours and the yeast does not sprout or increase but only becomes enriched in enzymes, the hydrogen ion concentration being so regulated by the addition of alkaline solutions that the pH value during the fermentation does not fall below 5 and after completion of the fermentation is adjusted to from 5,8-6,2.  In an example molasses is diluted to 20 DEG  Bg., warmed to 80 DEG  C., treated with phosphoric acid and acidified with sulphuric acid.  Extracts of hydrolysed nitrogenous feeding stuffs or extracts of malt sprouts as well as urea, ammonium salts, &c. are added and the nutritive solution diluted and the yeast added as above described.
Patent GB-1020601-A (GB)
Title: Improvements in fuel injection devices adapted for feeding the combustion chambers of gas turbine power units
IPC: F23D11/28
Filed: 1964-02-11
Abstract: 1,020,601. Liquid fuel atomizers. DAIMLERBENZ A.G. Feb. 11, 1964 [Feb. 14, 1963], No. 5749/64. Heading F4T. A spill type fuel injector comprises a cylindrical swirl chamber 12 fed by tangential passages 13 and having an annular return passage 15 formed between a disc-shaped throttle 18 and the cylindrical wall of the swirl chamber. The throttle 18 is supported on a stem on a larger disc 19 having return bores 16 touching an imaginary circle with diameter equal to that of the vortex chamber.
Patent GB-1440672-A (GB)
Title: Transport vehicles and transport systems utilising such vehicles
IPC: G05D1/02
Filed: 1973-02-06
Abstract: 1440672 Steering vehicles DIGITRON AG 6 Feb 1974 [6 Feb 1973] 5812/73 Heading B7H [Also in Divisions G3 and H4] A vehicle for an automatic transport system has at least two wheels used for driving and steering in response to externally generated signals and has the steering axes of these wheels arranged in an imaginary plane parallel to the central longitudinal axis of the vehicle. As shown in Fig. 1 the vehicle has steering/driving wheels 2, 3 rotatable about axes 2a, 3a by steering motors 9, (18) and are driven by motors 5, 6. The non-driven wheels 4 are castor mounted as shown. Inductive pick-off coils 10a, 10b and 11a, 11b are associated with the wheels 2, 3 respectively and are mounted on the steered part for co-operation with a leader cable 16. The arrangement for controlling the steering and driving motors is responsive both to the unbalance of induced voltage in a pair of pick-off coils for course following and to the frequency of the radiated signal for providing a particular response configuration. Radiation of a first frequency f 1  causes both wheels 2, 3 to be driven and the steering to be anti-parallel (response a) so that the leader cable will be tracked by both wheels and the vehicle will move generally parallel to its longitudinal axis. Radiation of a second frequency f 2  causes one wheel only to track the cable (response c) and the vehicle will move perpendicular to its longitudinal axis. Simultaneous detection of both frequencies f 1  and f 2  causes the non-tracking wheel to turn and lie parallel with the tracking wheel (response b) so that the vehicle can change from longitudinal to transverse movement. Further frequencies can be used to stop the vehicle. In the track arrangement shown in Fig. 7 a vehicle can be diverted into the loop by applying a frequency f 2  to the loop 16a<SP>1</SP> and supplementing this with a frequency f 1  at the bends 16a, 16c and stopped at working position A by the application of a further frequency f 3 . When no diversion is required the switches 20, 21, 22 remain open and the vehicle follows track 16 in the a response mode.
Patent GB-677565-A (GB)
Title: Improvements in settees, armchairs and the like
IPC: A47C1/02
Filed: 1950-03-08
Abstract: 677,565. Seats. TOWLE, R. A., (trading as GOODWOOD UPHOLSTERY & FURNITURE). March 8, 1951. [March 8, 1950] No. 5821/50. Class 52 (ii). A settee, armchair &c. particularly for television viewing has one or both of its arm rests 4, 5 fore-shortened or stepped down to provide one or two seats 11, 12 additional to the main seat 2. Cushions 8, 15, 16 may be provided and the plan of the settee may be of curved or horse shoe shape.
Patent GB-661690-A (GB)
Title: Improvements in or relating to piezo-electric elements
IPC: H03H9/205
Filed: 1949-03-03
Abstract: 661,690. Piezo-electric crystals. GENERAL ELECTRIC CO., Ltd., and EDWARDS, H. W. March 1, 1950 [March 3, 1949], No. 5876/49. Class 40 (viii). A method of bonding two or more piezoelectric elements such as quartz or barium titanate, comprises the steps of coating at least one of each pair of surfaces to be united with a paste or powder comprising a fusible vitreous enamel, clamping the elements together so that the surfaces to be united are superposed, and heating the elements to temperature sufficient to fuse the vitreous enamel without adversely affecting the piezo-electric material; and after cooling, removing the clamps. The enamel may comprise lead borate or lead boro-silicate. If the bonding layer is required to be conducting, finely divided silver, nickel, 'or platinum is added. When using lead borate the plates are fired in air at 550‹ C. Then, two spots of the conducting coating paste are placed on the centre lines of the free faces at 0.224 of the length from each end and fired at 550‹ C. Wires for electrical connection and mechanical support are then soldered to the spots. Connection may similarly be made to the edge of the bonding layer. More than two plates may be bonded, and they may be bonded to non-piezo-electric materials such as glass and ceramics.
Patent GB-687994-A (GB)
Title: Improvements relating to heat transference
IPC: F22B3/02
Filed: 1951-03-13
Abstract: 687,994. Heating by circulation of fluids; heattransmitting media; steam generators and superheaters. BERGH, S. V., and BERGH, S. S. March 13,1951 [March 29, 1950], No. 6028/51. Classes 64 (ii), 123 (ii) and 123 (iii) An alkali metal, e.g. potassium or sodium, or a mixture of alkali metals is circulated in a closed system as a heat-transfer medium, and is vaporized in one part of the system and condensed in another. One or more of the elements in groups 5b, 6b, and 7b of the periodic system, or a small amount of a substance which lowers the surface tension of the medium, may be added to the latter. In the heating system shown, the alkali metal is vaporized in a vapour generator 1 with, a vapour separator 2 and headers 5, 6, and its vapour is circulated through an oven 3 and a heat-exchanger 4. The latter is a steam generator, the steam separator 7 of which is connected to a steam superheater 9 and a feedwater heater 10. Alternatively, the heat-exchanger 4 may heat mercury which transmits heat to a steam generator. The system in which the metal circulates may be evacuated or contain a regulable amount of gas. The alkali metals or mixtures thereof may be used for cooling, for transferring heat from one part of a burning mass of fuel to another, for equalizing the temperatures in furnaces with double walls between which the metal vapour circulates, for superheating steam, or for heating the working gas of gas turbines.
Patent GB-362780-A (GB)
Title: Improvements in or relating to mechanically propelled toys
IPC: C14C3/24
Filed: 1931-02-26
Abstract: 362,780. Mechanically propelled toys. MœLLER, H., 30, Furtherstrasse, Nuremberg, Germany. Feb. 26, 1931, No. 6064. Convention date, June 10, 1930. [Class 132 (iii).] A clockwork-driven toy which is also a selfrighting tumbler figure has a locking device which automatically stops the clockwork drive when the toy is not supported on its wheels. The toy mouse shown in the drawings has a baseplate 1 having a bulge 10 provided with a weighty filling 10<1>. The baseplate 1 carries the frame 5 which carries the clockwork driving mechanism, with winding spindle 8<1> and helical spring 22, for driving the wheels 4 extending through slots 11 in the plate 1. The baseplate 1 also carries the supporting wheel 12 projecting through a slot 13. The frame 5 has attached to it the lever 25 which is controlled by the spring 23 and which has its end 26 in contact with the ground when the toy is normally running on its wheels. When the toy is not on its running wheels the spring 23 forces the lever 25 downwards to press an arm 27 thereon against the driving mechanism or as shown in the drawings against the periphery of one of the driving wheels 4 to stop the clockwork. The baseplate 1 is covered by the hollow body 2 of the figure which also encloses the driving mechanism and has an opening at the side through which the winding key can be placed on the spindle 8<1>. In the Specification as open to inspection under Sect. 91 (3) (a) it is stated that the bulge 10 is curved on both sides to form a rolling track transversely to the longitudinal axis of the toy and that the brake arm 27 is provided with rubber or other suitable lining unless the running wheels have rubber tyres.
Patent GB-286201-A (GB)
Title: Manufacture of hydrogenated aromatic carboxylic acid esters and carboxylic acids
IPC: C07C51/14
Filed: 1929-01-07
Abstract: 286,201. Groves, W. W., (I. G. Farbenindustrie Akt.-Ges.). Jan. 7, 1929. [A Specification was laid open to inspection under Sect. 91 of the Acts, Feb. 27, 1928]. Hydrogenated aromatic carboxylic acids and esters.-Esters of aromatic carboxylic acids are hydrogenated in the nucleus by treatment with hydrogen at pressures not exceeding 40 atmospheres and temperatures of 120-150‹ C. in the presence of a catalyst, comprising nickel alone or mixed with another metal of the iron group, prepared as described in Specification 255.884. The treatment of esters of acylaminonaphthalenecarboxylic acids is excluded (Specification 300,285). A solvent may be employed. In the case of acids derived from naphthalene, the addition of hydrogen takes place only in the unsubstituted part of the nucleus. The resulting esters may be saponified to produce the acids. Examples are given of the hydrogenation of the following compounds, using pressures of 25-40 atmospheres, a catalyst consisting of nickel or a mixture of nickel and cobalt, and in some cases in the presence of decahydronaphthalene as a solvent :-benzoic acid ethyl ester to produce hexahydrobenzoic acid ethyl ester, phenylacetic acid ethyl ester to hexahydrophenylacetic acid ethyl ester, salicylic acid methyl ester to hexahydrosalicylic acid methyl ester, phthalic acid diethyl ester to hexahydrophthalic acid diethyl ester, terephthalic acid dimethyl ester to hexahydroterephthalic acid dimethyl ester, alpha-naphthoic acid ethyl ester to 5 : 6 : 7 : 8-tetrahydro-1-naphthoic acid ethyl ester, 2 : 3-hydroxynaphthoic acid ethyl ester to 5 : 6 : 7 : 8-tetrahydro-2 : 3-hydroxynaphthoic acid ethyl ester (from which the corresponding acid is obtained by saponification), and 2 3-aminonaphthoic acid ethyl ester to 5 : 6 : 7 8-tetrahydro- 2 : 3 aminonaphthoic acid ethyl ester (from which the acid is prepared by saponification).
Patent GB-165504-A (GB)
Title: Improvements in means for launching ships' boats
IPC: B63B23/18
Filed: 1920-02-28
Abstract: 165,504. Swale, W. H. Feb. 28, 1920. Boat raising and lowering gear; davits; transporting boats across ship's deck.-Relates to overhead runways for launching and transporting ships' boats and consists in mounting each section as a cantilever on a separate davit, which can be rotated and luffed, and in constructing the cantilevers with a fixed central portion and hinged end portions. A davit 5, Figs. 2 and 3, has a braced cantilever 6, the outer portions 6<x> being hinged at 6<xx> to the centre part. The davits are positioned so that continuous runways can be provided fore and aft, and also when the outer davits are swung transversely on pedestals 19 can form with central davits complete transverse runways. The bottom frame 7 comprises uprights 14 in the upper part of which the davit arms 5 are pivoted, the lower portion 15 of the arms being fitted with nut and screw gear for luffing. A trolly 10, Fig. 6, has rollers which run on the lower angles of the cantilever, and carries a pulley block 11 from which a boat can be suspended. The outer ends 6<x> of the cantilever can be raised by cables 28 which pass to the drum 30. The arms 5 are spread apart at the top and each one divides again in its own plane, coupling-pieces 20, 22, 21 being used to complete the head as a box structure. From the upper portion of the head, bracing-wires 25 pass to the cantilever, the centre 24 of which is freely hung from the coupling-rod 21. The outer ends of the hinged parts 6<x> are provided with a hinged cross-bar and locking-arm 35 which prevents the trolly from running off, and with a pivoted U catch 37 which can engage the trolly and prevent it from running toward the centre of the cantilever. When transporting boats from one section to another, these stops are swung out of action.