baber/WOPTO huggingface dataset:
Patent GB-952821-A (GB)
Title: Process for the production of an expandable thermoplastic
IPC: C08J9/06
Filed: 1962-03-28
Abstract: A process for the production of expandable thermoplastics with the use of solid expanding agents comprises the steps of (a) vigorously mixing the expanding agent before and after addition of a solvent for the expanding agent until an intimate mixture of polymer and dissolved expanding agent is obtained, with the plastic material, (b) precipitating the expanding agent homogeneously and in finely grained form in the plastic/solvent mixture by the addition of liquids which do not, or only sparingly, dissolve the expanding agent but which are miscible with the solvent of the expanding agent and which simultaneously act as solvents for the plastic material, and (c) removing all solvents after the plastic material has been completely dissolved. Prior to step (c) the mixture may be further softened by after-treatment with liquids which scarcely dissolve or do not dissolve the expanding agent and which are not miscible with the solvent of the plasticising agent or are only miscible with any alcohol present in the solvent of the expanding agent. In a modification solutions of the expanding agent and of the plastic are mixed with each other, so that the expanding agent is precipitated in finely grained and homogeneous form and then the solvents are removed. Polystyrene, polyamides and cellulose derivatives are suitable thermoplastics.  Expanding agents referred to are ammonium carbonate, ammonium or sodium bicarbonate and azo compounds. These can be dissolved in water or alcohols. Liquids which effect precipitation are ketones, esters, ethers, chlorinated hydrocarbons and benzene.  Their distribution effect can be increased by adding a dispersing agent e.g. an alkyl phenol- or fatty alcohol polyglycol ether. In an example polystyrene particles, ammonium carbonate, water and nonylphenol polyglycol ether are intimately mixed. Incorporation of acetone precipitates the expanding agent in finely grained form. The friable composition is kneaded with methylene chloride and allowed to ripen and solvent is then removed at 35 DEG C.  The product can be expanded at 85 DEG  to 115 DEG C. to form films or plates.
Patent GB-1219731-A (GB)
Title: Apparatus for the continuous sampling of particulate materials
Inventor: DELLYES ROLAND
IPC: G01N1/20
Filed: 1969-03-06
Abstract: 1,219,731. Sampling particulate materials; shoots. CIMENTS LAFARGE. 6 March, 1969 [28 March, 1968], No. 11892/69. Headings B8N and B8S. In a sampling device, particulate material e.g. cement &c., passes through a funnel arrangement 2, 3, 4, 5 and a chamber 13 between a cone 11 and a frustum-shaped casing 7 leading to an annular chamber between walls 8, 12 from which it drops into a further chamber 9 and out through an opening 10, a continuous sample being taken by a shoot 14, rotating in the flow path, having an inlet 15 in the shape of an annular sector and an outlet 23. The sampling procedure may be repeated on this sample to produce a smaller sample by similar apparatus 7<SP>1</SP> ... 12<SP>1</SP>, 14<SP>1</SP>, 15<SP>1</SP>, the sample being delivered through a pipe 23<SP>1</SP>. The cones 11, 11<SP>1</SP> may rotate with the shoots 14 and the height of the funnel arrangement 2, 3, 4, 5 may be adjusted. The shoot inlets 15, 15<SP>1</SP> are wider than the annular chambers above them and are bordered by compensating open bottomed compartments (15 1 ), Fig. 2 (not shown), leading back into the main discharge to negate the effects of their side walls (20). For sticky substances a funnel arrangement (34<SP>1</SP>), Fig. 5 (not shown), may be provided leading to the annular chamber between walls 8, 12.
Patent GB-925138-A (GB)
Title: Method of dry cleaning fibrous materials
IPC: C07C59/68
Filed: 1960-04-04
Abstract: Dry cleaning compositions comprise (a) a solvent such as benzine, carbon tetrachloride, methylene chloride, tri- and perchlorethylene, and methyl chloroform, and (b) an intensifier of general formula <FORM:0925138/III/1> wherein Z is 2 or 3, y is 0-8, Ra, Rb and Rc together contain at least 8 carbon atoms, at least one of these groups being a C1-30-alkyl group and those others which are not such alkyl groups being hydrogen, halogen, hydroxyl or a C1-3-alkoxy group, R1 is an aromatic group of not more than 10 carbon atoms, R11 is -CH2-, -CO-CH=CH,- or -CO-C6H4-, and Me is hydrogen or a solvent-soluble salt-forming cation, e.g. alkali or alkaline earth metal, aluminium or the cation of a C1-6-aliphatic amine, especially an ethanolamine; the use of the compounds defined in Specification 893,296 is however disclaimed. Intensifier (b), of which the preferred example is the compound of formula <FORM:0925138/III/2> is usually present in amounts of 0,5-50, preferably 3-30, g/b., and the dry-cleaning bath generally also contains such a quantity of water, added before or during the cleaning operations, that the textile material, when immersed, will absorb the same amount of water as it would in an atmosphere of 70-90% R.H.  The bath may also contain C1-18-saturated aliphatic alcohols and ethanolamides of C12-18-fatty acids.ALSO:As a prior step to rendering clothing waterrepellent, the clothing is dry-cleaned with a solvent containing an intensifier of general formula <FORM:0925138/IV(a)/1> wherein z is 2 or 3, y is 0-8, Ra, Rb and Rc together contain at least 8 carbon atoms at least one of these groups being a C1-30-alkyl group and those others which are not such alkyl groups being hydrogen, halogen, hydroxyl or a C1-3-alkoxy group, R1 is an aromatic group of not more than 10 carbon atoms, R11 is -CH2-, -CO-CH=CH-, or -CO-C6H4-, and Me is hydrogen or a solvent-soluble salt-forming cation, e.g. alkali or alkaline earth metal, aluminium, or the cation of a C1-6-aliphatic amine; the use of the compounds defined in Specification 893,296 is however disclaimed (see Group III).  The clothing may be of wool, cotton, regenerated cellulose, leather, polyamide, polyester, polyacrylonitrile, or cellulose acetate with aluminium, zirconium, titanium or siloxane compounds, and especially with a 2:1 mixture of aluminium diethylate monostearate and Indonesian paraffin wax in perchlorethylene.  The solvent may be benzine, carbon tetrachloride, methylene chloride, triand per-chlorethylene or methyl chloroform.
Patent GB-301268-A (GB)
Title: Improvements in dishwashers
IPC: A47L15/16
Filed: 1928-04-23
Abstract: 301,268. Voshardt, H. F. April 23, 1928. Plates, dishes, and the like, washing.-A receptacle 1, only partly shown, containing means for spraying liquid on dishes carried in a support, is provided with a fixed hood-like portion 3 and a pivotally-mounted closure member 4, adapted to telescope within the portion 3. The member 4 is provided at its inner edge with an annular channel 7 for engagement, when the member is in the closed position, with a flange 11 secured in spaced relation to the inner wall of the portion 3. This arrangement is for the purpose of preventing the escape of water from the receptacle 1, and any water which may have entered the channel 7 when the closure member 4 is in the open position is allowed to drain away on lowering the closure as the channel 7 is openended. The bottom part of the member 4 has a tapering portion 4a and an apron 15 adapted to fit within a trough 18 secured to the main body of the receptacle 1.
Patent GB-568583-A (GB)
Title: Improvements in or relating to variable resistances
IPC: H01C10/32
Filed: 1943-07-22
Abstract: 568,583. Variable-contact resistances. SMITH & SONS (ENGLAND), Ltd., S., (formerly SMITH & SONS (MOTOR ACCESSORIES), Ltd., S.), and WARDROPER, H. G. July 22, 1943, No. 11970. [Class 37] [Also in Group XXXVII] A resistance element 17 is mounted within a one-compartment cylindrical casing 10, through a slot 12 in the circumferential wall of which projects a control arm 27 arranged to move a sliding contact 24 over the resistance 17. The arm 27 and contact 24 extend radially from a hub 22 which is journalled in opposite end walls of the casing. The projecting end of the arm 27 is screw threaded to receive a manipulative knob 29 provided with an arcuate knurled outer face 30. The inner threaded end of the arm 27 screws into the hub and is arranged to clamp a lead wire 31 which may be threaded into a central core in the hub from outside the casing. The other lead 32 passed through a hole in the casing. An arcuate shutter 19 is clamped between the head 29 and a shoulder on the arm 27 and covers the slot 12 for all positions of the contact arm. The outer face of this shutter may be differently coloured or marked on opposite sides of the knob 29 to indicate the extent of the resistance in operation. Specification 555,909 [Group XXXI] is referred to.
Patent GB-1077093-A (GB)
Title: Process and apparatus for drying flat material
IPC: C14B1/26
Filed: 1965-03-22
Abstract: In apparatus for drying leather, the leather is laid and smoothed on a cold sheet metal plate 9 in a frame 6 having rollers 8 whilst on a worktable (1) Fig. 1 (not shown) and then conveyed into a vacuum drying chamber 3 by endless conveyer chains (not shown) wherein an upper hood 11, connected to a source of vacuum, is lowered by compressed air cylinders 12 to press the plate 9 on to a hot table 14.  Simultaneously, a second drying plate 9 in a frame (7), Fig. 1 (not shown) <PICT:1077093/C6-C7/1> is loaded with leather on the work-table which is a grating formed by bars which may be cooled from below by a fan (not shown).  The hood 11 has a felt pad 15 to contact the leather and drying plate, and a track for the rollers 8 in the chamber 3 is spring-loaded at 13 to allow the plate 9 to contact the hot table 14.
Patent GB-1096343-A (GB)
Title: Photographic elements
IPC: G03C8/52
Filed: 1965-03-23
Abstract: 1,096,343. Photographic elements for the dye developer transfer process. EASTMAN KODAK CO. March 23, 1965 [March 23, 1964], No. 12167/65. Heading G2C. Two dye image forming units comprising a light-sensitive silver halide emulsion layer and a dye developer of a colour photographic material for the dye developer transfer process are separated by a stratum permeable to aqueous alkaline solution and composed of a water-insoluble polyvalent metal salt of a polymer which is filmforming, water-soluble and permeable to alkaline aqueous solution and which contains carboxylic groups in free acid or water-soluble salt form, the stratum being less permeable to a dye developer in alkaline aqueous solution than a layer of the polymer itself. Specified polymers are gelatine, casein, alginic acid, pectic acid, tragacanthic acid, sodium carboxymethyl cellulose; succinoylated polyvinyl alcohol, polyacrylic acid, maleic acid/styrene polymers, alkyl acrylate/acrylic acid, formaldehyde/salicylic acid polymers, acidic polyesters and acidic polyamides. Specified polyvalent metals are, Ca, Ba, Sr, Zn, Th, Mg, Mn, Pb, Sn, Co, Ni, Cd, Fe, and Cr. The colour material may contain an auxiliary developer e.g. a hydroquinone derivative. An integral reception layer may be coated beneath the dye image forming units being separated therefrom by a stripping layer. Where the binder for one of the layers of the dye-image forming units consists of a carboxylic acid group containing polymer the stratum may be formed by coating said layer with an aqueous solution of polyvalent metal salt.
Patent GB-966739-A (GB)
Title: Improvements in or relating to a filler assembly for use in expansion joints of concrete structures
Inventor: HURST JOHN
IPC: E01C23/02
Filed: 1962-03-29
Abstract: 966,739. Expansion joints for concrete slab structures. TRETOL-SERVICISED Ltd. March 29, 1963 [March 29, 1962], No. 12173/62. Heading E1V. A preformed joint filler assembly for an expansion joint in concrete slabs comprises a compressible plank 1 and an apexed fillet 2 of rigid material such as wood supported on its top edge, the two parts being held together by sheet material 3 such as bitumenised felt which caps the fillet and is secured to each side of the plank 1. In use the assembly is located in poured concrete with the apex just below the surface. After setting, localised cracks in the concrete over the apex of the fillet indicate its exact position so that the covering concrete and sheet material 3 may be cut by a saw to permit-removal of the covering concrete and the fillet 2. Sealing composition is then introduced into the space formed.
Patent GB-572104-A (GB)
Title: Improvements in or relating to liquid pressure remote control systems
IPC: F15B3/00
Filed: 1943-07-28
Abstract: 572,104. Hydraulic operating systems. BENDIX AVIATION CORPORATION. July 28, 1943, No. 12295. Convention date, April 13, 1942. [Class 103 (i)] [Also in Group XXXIII] In a hydraulic operating system, particularly for operating aircraft wheel brakes, in which a debooster comprising two connected pistons of unequal areas is interposed between an accumulator from which the pressure liquid is supplied and the operating cylinder, the debooster includes a reservoir for making up liquid losses' and a valve device is arranged to cut off the connection of the reservoir to atmosphere except when the system is in operation. Leakage in the event of the reservoir being inverted is thus prevented. The system shown is that described in Specification 555,586 and comprises a pump 12 supplying liquid from a reservoir 11 to an accumulator 13 under the control of a byepass valve device 14. Motors connected to pipes 24 through valves 22 operate various controls. Between the control valve 15 and the brake cylinder 20 controlled thereby is interposed the debooster. 18 comprising a high-pressure piston 29, 30 slidable in a cylinder 28 secured within a casing which forms a reservoir 27 and the cylinder 26 for the larger diameter low-pressure piston 32. The cylinders 26, 28 are connected at 41, 40 respectively to the brake cylinder 20 and the valve 15. A valve 34 on a rod 33 secured to the piston 29 and which has a pin-and-slot connection 38 with an extension of the piston 32 is normally held open by a spring 51 to connect cylinder 26 to the reservoir 27. Initial downward movement of the piston 29 when pressure liquid is supplied to the upper face thereof by operation of the valve 15, closes the valve 34 which then transmits the pressure from the one piston to the other. A second spring 50 may be provided to assist the return of piston 32. To prevent spilling of the liquid from the reservoir 27, communication thereof with the atmosphere through holes 43 in a cap 42a is normally closed by a valve 44 acted upon by the piston 32 through a rod 49 and a spring 48. When the piston moves downwards, the rod 49 is moved by a spring 45 to open the valve. The Specification as open to inspection under Sect. 91 describes a modification of the booster in which the pistons are rigidly connected together and compensation for liquid losses is effected by a ball-balve which is normally spring seated in an aperture in the larger piston and which is opened at the completion of the operative stroke by a rod extending upwards from the lower end of the casing, thus connecting the two cylinders. An aperture may be provided near the top of the larger cylinder to permit expansion of the liquid. This subjectmatter does not appear in the Specification as accepted.
Patent GB-141531-A (GB)
Title: Machine for washing potatoes and the like
IPC: A23N12/02
Filed: 1919-05-16
Abstract: 141,531. Harris, A. E. May 16, 1919. Washing vegetables.-A machine for washing potatoes &c. comprises a stationary tank a with a branched water-supply pipe p and a rotary shaft b carrying stirrer arms l arranged spirally. The tank has a perforated false bottom m and is divided into compartments by partitions e, g. The potatoes are lifted from one compartment to the next and finally to a sloping grating by paddles k. Stones remain at the inlet end of the apparatus.
Patent GB-583925-A (GB)
Title: Improvements in vehicle lighting systems
IPC: B60R16/03
Filed: 1944-06-29
Abstract: 583,925. Self - contained supply systems. FLETCHER, G. H., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. June 29, 1944, No. 12407..[Class 38 (iv)] Variable-speed, generators, with. A vehicle lighting system includes a machine or two coupled machines for producing A.C. for fluorescent lamps and D.C. for battery charging when driven above a predetermined speed but when the speed drops the machine or set runs off the battery as a converter to continue the A.C. supply to the lamps. In the form shown, as the vehicle speed rises the voltage of an auxiliary generator 13 on the axle rises and energises coil 12 of a coupling 5 whereof the machine 1 is driven for charging the battery 11 and supplying lamps 9. On reaching a predetermined charging current relay 18, 19 operates contasts 16, 20 to deenergize the field of inductor alternator 13 and transfer the energization of coil 12 to the battery and the machine continues to run as a double current generator until the battery voltage drops following a reduction of speed whereupon relay 18, 19 de-energises coil 12 and the D.C. side operates as a motor from the battery. The A.C. voltage is regulated by a reactor 24 having a saturating winding 25 energized from the battery under the control of a regulator 26 energised from rectifier 28 and a saturable reactor 10 may be in series with each lamp. An alternative type of coupling, e.g. centrifugal may'be employed.
Patent GB-400110-A (GB)
Title: Apparatus for handling glass sheets in sheet drawing apparatus
IPC: C03B33/02
Filed: 1933-04-29
Abstract: 400,110. Glass manufacture. FEENY, C. J., 73A, Queen Victoria Street, London.- (Naamlooze Vennootschap Maatschappij Voor de Vervaardiging Van Glas ; 104, Weteringschans, Amsterdam.) April 29, 1933, No. 12504. [Class 56.] An apparatus for handling sheet glass as it emerges from a vertical drawing-apparatus comprises a conveyer which is movable vertically above the leer and carries a device for supporting the glass sheet, and means for applying a lifting force to the supporting device before the top section is cut off from the continuous glass sheet. The apparatus comprises a number of suction cups 24 secured to the ends of tubes 23, 22 carried by vertical rods 25 which telescope into tubular members 19. The tubes 19 and a rod 20 form a frame depending from a plate 16, and the plate has a vertical shaft 18 which rotates in a bearing 17 on a carriage 15 that runs on overhead rails 12. The device is mounted above a vertical leer 1 provided with rollers 2 by means of which a sheet 3 of glass is drawn upwards continuously from a bath of molten glass. In use, the cups 24 are caused to engage the glass sheet 3, air being withdrawn from the cups through a flexible hose 26 fitted with a control valve 29. A lifting force is then applied to the framework 23, 25 by a motor 35, mounted on the frame 19, 20, through cables 30. The force applied, which is indicated by a spring balance 31, is in excess of the weight of the sheet section to be cut off, so that it assists in preventing the drawing rolls 2 from slipping. Also, as soon as the sheet section is severed, it is removed rapidly from the end of the rising sheet by the excess lifting force. The carriage 15 can be used to carry the sheet section to a cutting-table or to a rack 41 suspended from a carriage 42 on overhead rails. The frame carrying the cups 24 can be tilted about the horizontal tube 22, and the whole device can be rotated about the axis of the vertical shaft 18, to facilitate the placing of the glass on a cutting- table.
Patent GB-441244-A (GB)
Title: Improvements in women's caps
IPC: A42B1/06
Filed: 1935-04-26
Abstract: 441,244. Women's caps. ROLLINS, G. DE W., Hidden House, Griffin Avenue, New Rochelle, and DOBBS, E. H., Mulberry Road, Larchmont, both in New York, U.S.A. April 26, 1935, No. 12538. Convention date, Jan. 16. [Class 63] A women's cap, particularly for beach and sports wear, comprises a hood portion 10 of triangular shape which is cut from any suitable material and provided with any suitable design, to which is attached a visor 14 consisting of a piece of stiff material, e.g. cardboard or buckram, covered on both sides with the same material as used for the hood portion or any other suitable material. The hood portion 10 is, preferably, in the form of a right-angled isosceles triangle to the middle of the long side of which the inner curve of the visor 14 is attached, so that the material of the hood portion is puckered between the ends of the visor. The corner 18 of the hood portion is adapted to drape down the back of the head, and the cap is secured in position by tying the corners 11, 12, together.
Patent GB-234279-A (GB)
Title: Improvements in driving mechanism for warp beaming machines
IPC: D02H3/00
Filed: 1924-05-22
Abstract: 234,279. Sellers, F., and Richardson, Tuer, &. Co., Ltd. May 22, 1924. Drawings to Specification. Yarns, beaming.-The beam is driven through a friction clutch, allowing a large range of slip, and positive multiple-speed glaring. Specification 124,544 is referred to.
Patent GB-260210-A (GB)
Title: Improvements in and relating to insulating compositions
IPC: H01B3/06
Filed: 1926-05-17
Abstract: 260,210. British Thomson-Houston Co., Ltd., (Assignees of Weldon, J. J.). Oct. 23, 1925, [Convention date]. Void [Published under Sect. 91 of the Acts]. Compound paper; paper, treating with special materials.- Laminated material, particularly for electric insulation, is made by first impregnating sheets of absorbent fibrous material such as paper with a substance of high insulating properties such as wood pitch, asphaltum, copal, or a suitable gum, and then uniting the sheets with a binder such as shellac or a synthetic resin. The material to be impregnated, for example kraft paper, is unwound from a roll 1, passes over a heated plate 2, and is wound on a second roll 3. Powdered or molten impregnating material is supplied from a hopper 4, which may be provided with feed mechanism 6. Pressure rollers 7, 8, 9 bear against the roll 3, the rollers 7, 8 being preferably heated. The impregnating material forms a pool 10 where the roller 7 presses against the roll 3. Means such as air jets may be used to confine the pool within the limits of the paper. The roll of impregnated paper may be rolled to form tubes in the same machine, or bv the combined coating and rolling machine described in Specification 190,838, [Class 140, Waterproof &c. fabrics], a binder of shellac. synthetic resin, or the like being interposed between the layers.
Patent GB-736008-A (GB)
Title: Improvements in or relating to quick release nuts and to the manufacture of such nuts
IPC: F16B37/08
Filed: 1952-05-19
Abstract: 736,008. Nuts. BESWICK, R. E. May 15, 1953 [May 19, 1952], No. 12651/52. Class 89(1). [Also in Group XXII] A quick-release nut comprises a housing 2 Fig. 3, and a number e.g., three, segments 7 which are internally screw-threaded and slidable in the housing to cause the segments to move towards or away from each other. The housing has polygonal, e.g. hexagonal, external and internal cross-sections, the internal hexagon at 3 being smaller than that at 4, parts 3 and 4 being connected by an inclined part 5. The segments are of similar form and are expanded by a spring-ring 8 in a groove 8a. The ring engages pins 6 which prevent the segments leaving the housing, The nut is pushed on to its associated screw to the desired position and the housing is then moved over the segments to move them into engagement with the screw threads. The nut may then be tightened with a spanner. The end faces 9b, Fig. 2, of the segments may project beyond the end of the housing whereby the segments will clamp the screw-threads when the nut is tightened against a work-face. The housing is made from an annular metal blank 9, Fig. 6, by fitting the blank on a mandrel 10, Fig. 5, of hexagonal cross section and forcing it through a die 11, the inlet angle being about 12¢ degrees. Strippers 21 remove the finished housing as the mandrel is drawn back. Specification 595,473 is referred to.