baber/WOPTO huggingface dataset:
Patent GB-895097-A (GB)
Title: Improvements relating to liquid proof containers
IPC: B29C51/12
Filed: 1957-02-05
Abstract: One or more plastic rings, e.g. of polyvinyl chloride or polystyrene, are affixed at intervals round a vacuum forming mould and a thermoplastic container vacuum formed so as to adhere to the rings. The rings may adhere to the internal or external walls of the container according as to whether a male or female mould is used.  If desired, one of the rings may incorporate hand gripping means.
Patent GB-942956-A (GB)
Title: Vinylidene fluoride compositions
IPC: C09D127/16
Filed: 1961-02-02
Abstract: Films of vinylidene fluoride polymers are cast from liquid compositions either (i) containing the polymer, having a particle size of 0.05 to 20 microns, dispersed in a liquid medium containing at least one high temperature organic "solvent" which imparts to the polymer a "crystalline melting temperature" ("Tm") between 90 and 160 DEG C. and has a boiling point above "Tm" and between 100 and 300 DEG C.; or (ii) wherein the polymer is dissolved in at least one solvent imparting a "Tm" between 50 and 90 DEG C. and boiling between 160 and 210 DEG C.  "Tm" is defined in the Specification and is roughly the value to which the first order transition point of the polymer is lowered by the solvating effect of the particular solvent. Vinylidene polymers are defined as the homopolymer and copolymers containing more than 95% molar vinylidene fluoride.  Specified comonomers are symmetrical dichlorodifluoroethylene, trifluorochloroethylene, tetrafluoroethylene and vinyl fluoride or chloride. The dispersion (i) may be diluted with water or an organic diluent e.g. xylene, acetone, dioxane, MEK, MiK, tetrahydrofuran or methyl amyl ketone. These organic diluents may also be used to reduce the viscosity of the solutions (ii). Specified organic "solvents" with their "Tm" and boiling points are: (for dispersions) diethylformamide 92, 178( DEG C.); triethylphosphate 97, 216; propylene carbonate 100, 242; dimethylsuccinate 120, 195; diethyloxalate 130, 185; diethylsuccinate 130, 218; tetraethylurea 135, 212; dimethylphthalate 135, 282; diethyladipate 138, 245; diethylphthalate 145, 299; (and for solutions) dimethylacetamide 52, 165; tetramethylurea 65, 177; diethylacetamide 78, 205; and dimethylsulphoxide 80, 177.  In casting films from the compositions they are applied to a surface which is heated at a temperature between the Tm and boiling point of the "solvent" until about 90% of the liquid phase has evaporated and then at a higher temperature. When aqueous dispersions are used there is a preliminary stage at not more than 95 DEG C. until at least 90% of the water has evaporated. Aqueous dispersions may contain a surfactant, e.g. the reaction product of dodecyl or nonyl phenol or t-dodecyl mercaptans with ethylene oxide, and an azeotropic agent to expedite evaporation of the water e.g. butyl or amyl alcohol.  Copolymer preparation Examples 24 and 25 describe the preparation of copolymers of vinylidene fluoride with trifluorochloroethylene and symmetrical dichlorodifluoroethylene respectively.  In Example 24 polymerization is effected in aqueous medium containing ammonium persulphate, sodium metabisulphite and ferrous sulphate, Example 25 uses an aqueous medium containing potassium persulphate, disodium hydrogen phosphate and perfluorooctanoic acid.
Patent GB-726439-A (GB)
Title: Hydraulically or pneumatically operated disc brake, more especially for motor vehicles
IPC: F16D65/18
Filed: 1953-02-12
Abstract: 726,439. Pistons. STRAUS, M. Feb. 12, 1953 [Feb. 13, 1952], No. 4018/53. Classes 122 (1) and 122 (5). [Also in Group XXXIV] In an hydraulically or pneumatically operated disc brake, the brake discs 3, 4 are normally applied by fluid pressure means so that the fluid enters the pressure chamber formed between shoulders 12 and 14, formed in sleeve 9 and sleeve 10 respectively, and is forced through bores 17 and 18 into annular grooves 11 and 13 which carry packing rings 16. The rings are therefore urged by the pressure obtaining in the pressure chamber against the cylinder surface which is to be sealed and the brake discs 3 and 4 are expanded. Specification 700,970 is referred to.
Patent GB-1385443-A (GB)
Title: Method and apparatus for feeding an internal combustion engine
IPC: F02M3/08
Filed: 1973-01-26
Abstract: 1385443 Centrifugal separators A A MALHERBE 26 Jan 1973 [27 Jan 1972] 4036/73 Heading B2P [Also in Division Fl] In an I.C. engine (see Division Fl) fuel/air mixture passes via an inlet 25 into a chamber 30. Deformable blades 31 causes whirling of the mixture so that excess fuel droplets are thrown on to a skirt 32 which drains to trough 33 and base 34 from whence it is returned to the carburettor. The blades 31 tend to straighten as the mixture speed increases, thereby decreasing the whirling.
Patent GB-215819-A (GB)
Title: Improved means for transmitting motion from one rotating member to another arranged concentric therewith
IPC: F16C35/12
Filed: 1923-02-10
Abstract: 215,819. British Thomson-Houston Co., Ltd., Clough, F. H., and Osmond, C. B. Feb. 10, 1923. Ball bearing; yielding supports.-Motion is transmitted from one rotating member to another by means of a ball bearing, the races of which are secured to the driving members; one of the races is loaded in the axial direction and the ball bearing constitutes the sole. driving medium between the two members. As applied to the spindle and spool of a spinning machine the spool-carrying member 7 closely surrounds without touching the spindle 1 and is supported solely by the outer race 5 of a ball bearing 8, the inner race 4 being carried by a sleeve 2 splined to the spindle. A brake disk 9 is provided and longitudinal adjustment of the sleeve 2 is effected through any suitable thrust bearing such as the lower ball bearing shown, which permits movement in a plane at right agles to the axis of rotation to provide for flexure or eccentricity of the spindle at certain speeds, an elastic buffer being provided to damp out extreme oscillations as described in Specification 200,452. The bearing is arranged in an annular two part housing 13 carried by the usual bracket giving longitudinal motion to the spool, the inner race 10 being rigidly mounted on the lower end of the sleeve 2 whilst the outer race 11 is supported between the rigid casing top 12 and a plate 14 backed up by a spring 14<a>, the outer race being also surrounded by a. ring 15 of felt, rubber, &c. fitting either against the outside of the race or against the annular wall of the casing. The sleeve 2 instead of being a sliding fit on the spindle may be provided with enlarged ends and supported by collars with rubber or other resilient packing material interposed, one of the enlarged ends being detachable to facilitate assemblage, &c.
Patent GB-241078-A (GB)
Title: Improvements in firing mechanisms for automatic fire-arms
IPC: F41A19/33
Filed: 1925-02-13
Abstract: 241,078. Soc. Anon. des Anciens Etablissements Hotchkiss et Cie. Jan. 7. 1925, [Convention date]. Machine guns.-Trigger mechanism of the kind having a sear lever connecting the trigger and the sear and a controlling device which can be adjusted for single-shot firing, continuous firing, or safety, has a tripping lever adapted, when the controlling device is set for single-shot firing, to be actuated by some moving part of the breech mechanism and to act positively on the sear lever to disengage it from the sear. The invention is shown applied to a gas-operated gun. The tripping lever 25 has three arms, one formed with a projection 27 adapted to be engaged by a shoulder on the piston P, one 29 adapted to act on a projection 30 on the sear lever 9, and one engaged by an eccentric 33 on the adjusting device. When the eccentric is turned to the position shown in Fig. 5, for single-shot firing, the projection 27 is in position to be struck by a shoulder on the piston P. When the eccentric is turned to the position shown in Fig. 6, the lever is turned so that it is not operated by the piston and the sear lever remains in engagement with the sear so that firing is continuous. A further rotation of the eccentric to the safe position disengages the sear lever from the sear. Specification 219,013 is referred to.
Patent GB-936818-A (GB)
IPC: B23K35/22
Filed: 1961-02-03
Abstract: 936,818. Spark-erosion electrodes. CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE. Feb. 3, 1961 [Feb. 9, 1960; June 1, 1960 (2); Nov. 16, 1960], No. 4218/61. Class 83 (4). A spark erosion electrode comprises a mixture of a substance which is a good electrical con. ductor and can be readily machined with a non- metallic substance in the form of a fine dispersion and consisting of less than 10% by weight of the mixture. The conducting substance is preferably copper or a copper alloy containing a small percentage of silver, cadmium or chromium. The non-metallic substance is preferably less than 5% and may consist of hydrides, boron or borides, carbides, nitrides, oxides, silicon or silicides, or sulphides. In the manufacture of the electrode, powders of both substances are mixed together, compressed cold or hot in a mould of rubber, synthetic resin or metal, or alternatively rolled or extruded to a desired shape, and then sintered. After machining the electrode may be again compressed. Both the initial and final compression may be obtained by an explosion of chemical explosives or by an electrical discharge in a medium capable of transmitting a shock wave. Many specific examples are given of the substances and percentages used in the mixture with the appropriate machining speeds and electrode wear values.
Patent GB-179622-A (GB)
Title: Improvements in and relating to the treatment of raw rubber
IPC: B29B15/02
Filed: 1921-02-05
Abstract: 179,622. Davidson, Sir S. C. Feb. 5, 1921. Roller apparatus. - Raw rubber is dehydrated by rolling it into an elongated cylinder, wrapping the mass while still under pressure in inextensible, absorbent textile material, and exposing it in a preferably dry atmosphere until the surface of the wrapper is dry. A mass of rubber c is elongated by rolling it between rollers d, d<1>, d<2>. A strip of tape b attached to a buckle a consisting of a piece of wire with ends bent round and turned up, is fed in at an angle, and the rolling is continued until the rubber is enveloped. The feeding-in angle nf the tape is then reversed and a second layer is rolled on. The pressure is released and the roll is hung up until the outer layer is dry.
Patent GB-999970-A (GB)
Title: Improved manufacture of laminated sheets of methyl polymethacrylate
IPC: B29C65/48
Filed: 1962-02-05
Abstract: 999,970. Laminates and laminating. SOC. INDUSTRIELLE TRIPLEX. Feb. 5, 1962 [Feb. 3, 1961], No. 4324/62. Heading B5N. Laminates, of sheet polymethylmethacrylate bonded with interposed films of polyvinyl butyrol or other heatsoftenable synthetic resins are made by applying to a vertically arranged assembly of the sheets and a film or. films a vacuum device to withdraw air from between the sheets, heating the assembly in an autoclave to the softening temperature of the film while maintaining the vacuum, and then increasing the gaseous pressure, preferably above atmospheric pressure, to secure bonding of the sheets. As shown, a laminate comprising a thick sheet 1 of polymethylmethacrylate having good mechanical strength, a film 3 of polyvinyl butyral, and a thinner sheet 2 of polymethylmethacrylate having a good surface hardness, is bound around its edges and over the peripheral parts of the sheets, with a moistened strip 4 of polyvinyl alcohol which carries a tubular projection 5. Frames 6a, 6b are applied to the faces of the laminate and are clamped thereto by spaced clips (not shown) which also hold sheets 7, 7a of material, such as a polyester, which is not softened at the temperature of treatment and which protects the sheets 1, 2 from dust and the effect of eddy currents. The whole assembly is suspended in an autoclave in vertical position in stirrups 9 connected by chains 11 to a ring 13, and is heated to softening point of the films 3 while air is withdrawn from between the sheets through the tube 5. Air pressure in the autoclave is then increased to above atmospheric, air gaining access to the surfaces of the laminates past the edges of the sheets 7, 7a between the clamping clips, or through apertures made in the sheets. To prevent oscillation of the assembly, which might cause buckling of the sheets 1,2  while hot, it is held between angle irons mounted in the autocalve. Wire netting may be incorporated in the bonding film 3.
Patent GB-650970-A (GB)
Title: Improvements in apparatus for sizing yarns
IPC: D06B23/28
Filed: 1948-02-13
Abstract: 650,970. Automatic viscosity control systems. DOMINION, TEXTILE CO., Ltd. Feb. 13, 1948, No. 4328. Convention date, Sept. 27, 1947. [Class 38 (iv)] [Also in Group VIII] A yarn sizing apparatus comprises a slasher size box 26, a feeding vessel 16, a second vessel 10 from which size of a desired consistency is fed to the feeding vessel and a third vessel 38 in which size of a heavier consistency is prepared and fed to the feeding vessel 10 through a passage 52 controlled by a valve 60 operated in response to a change in the consistency of the size being fed to the slasher size box. A return pipe to the vessel 38 under the influence of a back pressure valve 61 is provided. Size is circulated through the size box by a pump 24 through a circuit comprising feed pipe 22 and return pipe 30, a valve 36 actuated by a level control 34 being provided to maintain a constant level in the box. A. return to .the vessel 16 from the feeding circuit is provided under the influence of a back-pressure valve 35. Size is pumped from the vessel 10 by a pump 15 through a passage 14 to the feeding vessel 16 under the control of a valve 17, a return to vessel 10 under the influence of a back pressure valve 19 being provided. The size in each of the vessels 38, 10 and 16 is heated by live steam entering from pipes 12, which tends to diminish its consistency. Mechanical agitators 20 are provided in each vessel. A bleed line 40 from the supply passage 22 terminates in a horizontal nozzle 44, flow of size through the bleed line being controlled by valves 41 and 43. Size returning to the vessel 16 through the nozzle 44 follows an arcuate path which, when the consistency falls below a predetermined limit, straightens to impinge against a pivoted paddle 46, Fig. 2, which swings and closes a mercury switch 50 to operate a solenoid 56 to open valve 60 and allow heavier size to be pumped into the vessel 16 compensating for the diminiahed consistency. In a modification, Fig. 5, size issuing from the nozzle 44 enters an open top vessel 62 and slowly drains into the vessel 16 through a discharge 68. The vessel when full is counterpoised on a swinging lever 64. When the consistency of the size is diminished the jet issues against a shield 70 to return to the vessel, and as the vessel 62 empties the lever 64 tilts and operates the switch 50 and valve 60 as in the previous modification. The rod 66 may be mechanically adapted to operate the valve 60. In a further modification the bleed pipe 40 is provided with a T-fitting 72, Fig. 6, in which a diaphragm 76 is kept raised by the back pressure created by the passage of size of the normal viscosity through the bleed pipe. When the viscosity diminishes the diaphragm straightens and lowers a rod 78 which operates the mercury switch as before.
Patent GB-114336-A (GB)
Title: Improvements in or relating to Electric Incandescent Lamps and Reflectors used therewith.
Inventor: BERRY ARTHUR FRANCIS
IPC: F21V7/04
Filed: 1917-03-26
Abstract: 114,336. Berry, A. F. March 26, 1917. Reflectors.-A reflector for an elongated electric lamp of thin clear glass with an axial metal filament has re-entrant portions extending towards the lamp, so that reflected rays wholly or mainly miss the lamp, while those striking the glass are mostly at such an angle as to be reflected therefrom. Fracture of the bulb and damage to the filament by overheating are thus avoided. Figs. 2 and 4 show in cross section two arrangements of elongated reflectors c, d, e relatively to lamps a. Several lamps with their reflectors may be placed in line or side by side in a frame with variously-arranged switches.
Patent GB-348189-A (GB)
Title: Improvements in and apparatus for preheating materials containing coal and oil
IPC: C10G1/06
Filed: 1930-02-10
Abstract: <PICT:0348189/III/1> Carbonaceous materials to be destructively hydrogenated are indirectly preheated by burning dispersed combustibles such as producer gas, or powdered fuel in stages at several points.  A mixture of carbonaceous material and hydrogen, preheated to 200 DEG  C., enters at x a preheating coil b in a combustion chamber a. Combustible gas and an insufficiency of air are mixed in a chamber c and burn partially around the portion b<1> of the coil.  The combustion is completed by extra air supplied at points d, e, f, whereby a fall in temperature of the heating gases in the lower part of the chamber is avoided.  The heated material leaves at y at 460 DEG  C.  Instead of an excess of combustible, excess of air may be used, further supplies of combustible being added at suitable points.
Patent GB-360299-A (GB)
Title: Improvements in the production of formic acid
IPC: C07C51/02
Filed: 1931-02-13
Abstract: Formic acid; borocitric, borotartaric, and borosalicylic acids.--Formic acid is liberated by reacting upon a boroformate with an oxyacid in presence of moisture.  If citric or tartaric acids are used, which contain much water of crystallization the formic acid is liberated, immediately on mixing, with the formation of complex acids, but with an anhydrous oxyacid such as salicylic acid, the mixture only liberates formic acid on moistening, the moisture of the skin or atmospheric moisture being sufficient.  The mixture may be used for disinfecting, preservative, caustic, feebly stimulating or chemically reducing purposes, and may be scattered as desired, after which moisture is allowed to act upon it.ALSO:Formic acid is liberated by reacting upon a boroformate with an oxyacid in presence of moisture.  If citric or tartaric acids are used, which contain much water of crystallization the formic acid is liberated immediately on mixing, with the formation of complex acids, but with an anhydrous oxyacid such as salicylic acid, the mixture only liberates formic acid on moistening, the moisture of the skin or atmospheric moisture being sufficient.  The mixture may be used for disinfecting, preservative, caustic, feebly stimulating or reducing purposes, and may be scattered as desired, after which moisture is allowed to act upon it.
Patent GB-716572-A (GB)
Title: Improved means for detecting and indicating the approach of failure of a structure or stuctural element subjected to varying loads
Inventor: NORTH JOHN DUDLEY
IPC: G01N3/02
Filed: 1953-02-23
Abstract: 716,572. Testing physical qualities of materials. BOULTON PAUL AIRCRAFT, Ltd. Feb. 23, 1953 [Feb. 21, 1952], No. 4599/52. Class 106 (2). [Also in Group XXXIII] A means for detecting and indicating the approach of failure of a structure subjected to varying loads comprises one or more indicator elements arranged so as to be subjected to the same varying loads as the structure, the indicator elements having a lower fatigue limit so that the prior failure of the indicator element indicates the approaching possible failure of the main structure. In the example described, clamping blocks 7 are fastened to the main wing structure of an aircraft. Horizontally mounted cantilever bars 3 are clamped by the clamping blocks 7, and are loaded by weights 5. The cross section of the bars 3 is reduced by means of notches 4 of different depths to provide different degrees of stress concentration. Thus the notches 4 of the lowermost bar 3 are deeper than those of the uppermost bar thus providing a greater degree of stress concentration. The mass 5 and a suitable damping unit such as an air damper 6 form a tuned damper combination at the end of each cantilever bar 3. The device is mounted on the end wing rib so that the cantilever bars experience the same disturbing forces as the wing spar, and due to their higher stress concentration, the indicator elements fail before the wing spar fails.
Patent GB-829702-A (GB)
Title: Improvements in or relating to respirator masks
IPC: A62B18/02
Filed: 1957-02-11
Abstract: 829,702. Respirator masks. DRAGER, O. H., [trading as DRAGERWERK, H. & B. DRAGER.]. Feb. 11, 1957 [March 21, 1956], No. 4618/57. Class 81 (2). A respirator mask has an inwardly projecting wall 7, which bears against the face at the sides of the nose and mouth and below the mouth, and adjoining perforated walls which extend to the mask periphery and are positioned either between or below the eye-pieces. On inhalation, air enters the mask 1 through a pipe 2 but is prevented from reaching the nose and mouth directly by the wall 7 and is formed by bending the mask inwardly to form a ridge on the inside and a furrow on the outside. Inwardly projecting perforated walls 8, Fig. 1, extend below the eye-pieces 3 and adjoin the first wall 7 so that inhalation air passes through the perforations 9 and over the eye-pieces 3 on its way to the nose and mouth. Opposite the nose and mouth is an exhalation valve 12. In an alternative construction, perforated walls 14, Fig. 2, extending from the first wall 7 upwardly between the eye-pieces, replace the walls 8.
Patent GB-814495-A (GB)
Title: Non-corrosive compositions comprising polymerized olefines prepared with certain catalytic metal compounds
IPC: C08K5/1515
Filed: 1957-02-11
Abstract: Polymers of olefinically unsaturated monomers, e.g polyethylene, prepared by polymerizing the monomers with a halogen-containing catalyst formed by admixing an aluminium trimethyl, triethyl, tripropyl or tri-isobutyl compound or dialkyl aluminium halide, or a dialkyl aluminium hydride, or a dialkyl aluminium alkoxide with a compound of Group IVa, Va, or VIa of the Mendeleeff Periodic System are stabilized against the corrosive action of catalyst residues by incorporating in the polymer a compound having the general formula <FORM:0814495/IV (a)/1> where X is an alkyl, cycloalkyl, aryl, arylalkyl, alkylaryl or an alkylalkoxy radical, Y is hydrogen or the same radicals for X except alkylalkoxy, and Z is as Y or both Z's and the beta carbon atom may together form a carbocyclic radical. Specified compounds of the above formula are methyl 6-cyclohexyl-1-oxaspiro-(2,5)-octane-2-carboxylate, ethyl alpha-ethylbeta - 4 - methoxyphenylglycidate, ethyl alphamethyl - beta - (3,4 - dimethoxyphenyl) - glycidate, ethyl alpha-methyl-beta-(3,4-dimethoxyphenyl) - glycidate, methyl alpha - methyl - beta - 2,4 - dichlorophenyl) - glycidate, 2-ethylhexyl 1 - oxaspiro - (2,5) - octane - 2 - carboxylate, methyl alpha - n - decyl - beta - (p - methoxyphenyl) - glycidate.  The compounds may be incorporated in the polymers by dry blending, mixing on compounding rolls, or as a liquid dispersion from which the liquid is subsequently removed.