baber/WOPTO huggingface dataset:
Patent GB-539816-A (GB)
Title: Improvements in the manufacture of continuous sheets of thermoplastic material by extrusion
IPC: B29D7/01
Filed: 1940-02-16
Abstract: 539,816. Films; cellulose-derivative compositions. MONSANTO CHEMICAL CO. Feb. 16, 1940, No. 3015. Convention date, Feb. 16, 1939. [Class 2 (ii)] [Also in Group V] In processes for moulding sheets of cellulose esters or ethers of the kind in which a plastic colloidal gel of the material in a volatile solvent is extruded to form a sheet which is capable of sustaining itself and from which part of the solvent is subsequently removed, the amount of solvent used is slightly more than sufficient to maintain complete dispersion of the material in the form of a colloidal solution and to prevent mechanical fractures of the sheet and separation of the basic material and solvent during or after extrusion, but is insufficient to prevent formation of a self-sustaining sheet. The sheets may be moulded by the apparatus described in Specification 539,663. Examples of mixes are (1) cellulose acetate 100, methyl phthalyl ethyl glycollate 12, di-ethyl phthalate 12, acetone 15, denatured alcohol (5 to 6 per cent water) 24 and ethyl acetate 24 parts ; (2) cellulose acetate 100, triphenyl phosphate 17.5, diethyl phthalate 15, dimethyl phthalate 5, acetone 15, ethyl alcohol 24 and ethyl acetate 24 parts ; (3) ethyl cellulose 100, dibutyl phthalate 15, toluene 30, ethyl alcohol 10 and lactol spirits 5 parts ; (4) cellulose acetobutyrate 100, diamyl phthalate 25, ethyl alcohol 24, acetone 15 and ethyl acetate 24 parts. Specification 354,339 is referred to.
Patent GB-368928-A (GB)
Title: Process of obtaining hormones
Filed: 1931-01-30
Abstract: Sex hormones, together with the hormone of the anterior lobe of the pituitary gland if present, are obtained from body fluids or aqueous extracts of organs by saturating the liquids with one or more water-soluble salts of an alkali, an alkaline earth, magnesium or ammonium, filtering off the separated product containing the hormones and, if desired, drying it.  When sex hormone only is present it may be extracted from the separated product by means of an anhydrous organic solvent such as benzene, ether, chloroform, acetone, or absolute alcohol and the extract evaporated to remove the solvent, or a fatty oil may be used as the solvent so as to obtain a preparation to be used directly for therapeutic purposes.  When the pituitary hormone also is present it may be obtained separately by extraction with aqueous organic solvent after separation of the sex hormone by non-aqueous solvents, or the two hormones may be obtained in admixture by extraction with an aqueous solvent and the sex hormone then separated by extraction with an anhydrous solvent.
Patent GB-691631-A (GB)
Title: Improved poppet valve mechanism for internal combustion engines
IPC: F01L1/16
Filed: 1951-02-09
Abstract: 691,631. Valves. GENERAL MOTORS CORPORATION. Feb. 9. 1951 [Feb. 23. 1950], No. 3163/51. Classes 7 (ii) and 7 (vi) [Also in Group XXIX] A coil spring 13 for a poppet valve 5, which rotates whilst open in response to the twist of the spring, is seated at one end on a Belleville or like washer 25 which on compression of the spring 13 is flattened against a surface 26, a film of oil - momentarily trapped thereunder allowing it to rotate, which momentarily halts rotation of the valve 5. As shown the washer 25 is centred on an annular surface 36 and the surface 26 is flat and formed on the cylinder head. The upper end of the spring 13 engages an abutment 12 fixed to the valve stem by split cotters 10. The stamped metal valve rocker 11 has a recess 15 pivoting on the part spherical head 18 of a nut 17 having a lubricating oil passage 30 therethrough leading to the bearing surface 18, the excess oil flowing through aperture 16 on to the surface 26. The valve 5 is rotated by the spring twist during the first part of its opening stroke until the washer 25 is flattened and floats on its film of oil, whereby the washer 25 rotates and the valve rotation is halted momentarily until the oil film is squeezed from underneath the washer 25. The valve 5 then rotates during the remaining part of its opening stroke and during its entire closing stroke. The washer 25 may be interposed between the upper end of spring 13 and the abutment 12.
Patent GB-1284143-A (GB)
Title: Apparatus for transferring sheet material from one support to another
IPC: B65G49/06
Filed: 1970-01-22
Abstract: 1284143 Feeding and delivering sheets COMPAGNIE DE SAINT-GOBAIN 22 Jan 1970 [22 Jan 1969] 3199/70 Heading B8R [Also in Division C1] In an apparatus to transfer sheets 18, e.g. of glass, in either direction from one support to another, e.g. from a conveyer 3 to a "desk" support 8, a carriage 1 has means releasably securable to the sheet, e.g. suction cups 5, and is reciprocable along a guideway, e.g. defined by rails on which pulleys 14 run and by chains 15 engaging the other end 16 of carriage 1, between one support and a movable support, e.g. the desk 8, means being provided to move this support relative to the guideway by a distance substantially equal to the thickness of one sheet on each carriage reciprocation. A sheet transported by bands (25), Fig. 8 (not shown), on the conveyer 3 operates a contact (28) which actuates a jack (29), Fig. 7 (not shown), to lift rollers (27) into sheet contact, retarding the sheet. As the sheets abut stops (32) rollers (27) are rotated slightly to register each sheet against rollers (33) from which they are raised to the suction cups 5 by the rollers (27). The desk 8 moves down inclined tracks 20 intermittently, being actuated by a sensor activated by the trailing edge of each sheet. The carriage 1, which is counter balanced by weights 11, controls its own speed along the guideway by a cam system and end-of-stroke sensors which also control deposition of each sheet. The apparatus may operate in reverse fashion delivering sheets to conveyer 3 from a pile on desk 8.
Patent GB-849122-A (GB)
Title: Improvements relating to ion-exchange resins and their manufacture
Inventor: MILLAR JOHN ROBERT
IPC: C08J9/28
Filed: 1958-02-03
Abstract: A porous, granular ion-exchange resin is prepared by introducing ion-exchange groups into a granular, hydrophobic polymer prepared by polymerisation of a mixture of monomers comprising a compound having one double bond and a compound having two or more double bonds, the polymerisation being effected with the monomers in solution in an organic liquid that is a solvent for the monomers but is precipitant for the polymer.  Preferably the solution of monomers is dispersed in an inert suspension medium, e.g. water containing polyvinyl alcohol. The solvent is subsequently removed from the polymer beads, e.g. by heating, and a product which is macroporous (similar to a sponge) is obtained. Monomers specified are styrene, ethyl and methyl styrenes, vinyl naphthalene and anthracene; ethylene dimethacrylate, vinyl acrylate, vinyl methacrylate, divinyl oxalate, divinyl benzene, divinyl ketone, styryl vinyl ketone, and trivinyl benzene.  The solvent may be hexane, heptane, isopropanol, butanol, octanol, nitromethane, dioctyl sebacate, petroleum ether or petroleum naphtha. Polymerisation may be caused by heating or by the use of catalysts such as azobisisobutyronitrile or benzoyl peroxide. Ion-exchange groups specified are sulphonic acid, amino and quaternary ammonium groups.ALSO:A porous, granular ion-exchange resin is prepared by introducing ion-exchange groups into a granular, hydrophobic polymer prepared by polymerization of a mixture of monomers comprising a compound having one double bond and a compound having two or more double bonds.  The polymerization being effected with the monomers in solution in an organic liquid that is a solvent for the monomers but is a precipitant for the polymer.  Preferably the solution of monomers is dispersed in an inert suspension medium, e.g. water containing polyvinyl alcohol.  The solvent is subsequently removed from the polymer beads, e.g. by heating, and a product which is macroporous (similar to a sponge) is obtained. Monomers specified are styrene, ethyl and methyl styrenes, vinyl naphthalene and anthracene; ethylene dimethacrylate, vinyl methacrylate, divinyl oxalate, divinyl benzene, divinyl ketone, styryl vinyl ketone, and trivinyl benzene. The solvent may be hexane, heptane, isopropanol, butanol, octanol, nitromethane, dioctyl sebacate, petroleum ether or petroleum naphtha. Polymerization may be caused by heating or by the use of catalysts such as azobisisobutyronitrile or benzoyl peroxide. Ion-exchange groups specified are sulphonic acid, amino and quaternary ammonium groups.
Patent GB-415045-A (GB)
Title: Improvements relating to machines for cutting potatoes applicable to analogous purposes
IPC: B26D3/18
Filed: 1933-02-04
Abstract: 415,045. Cutting potatoes &c. LOVE, H., 3 Park View, Blackwood, Monmouthshire. Feb. 4, 1933, Nos. 3504, 7488, and 27465. [Class 5 (i).] In a machine for cutting potatoes or other vegetables or fruit into chips a slice is first cut from the potato or other substance and the slice is then cut into chips by means of a series of knives disposed one above the other, these knives moving relatively to and through a receptacle into which the slice passes. The potatoes pass from a downwardly extending part 3 of a hopper 2 into a vertical passage 5 formed in a slide 4 and of sufficient size to take the largest potato ; the rear wall of this passage is stepped or inclined to prevent the potato rising. The potato rests on a plate 14 that may be adjusted to vary the thickness of slice and is moved forward against a horizontal blade 11 that may have a corrugated edge. The slice thus cut is directed downwards into a vertically disposed space 12 below the knife formed by curved walls 12<a>, 12<b> that may be provided with ribs to prevent the slice adhering thereto. This space is traversed by a vertical series of knives 18 arranged parallel to and preferably stepped relatively to each other : their cutting edges may be serrated and may be set obliquely. The knives 18 are carried by rods secured in end frames that are reciprocated, preferably by being connected to the slide 4. The knives 18 may be provided with cutting edges at each side. The cutting into slices and the cutting into chips may be accomplished by rotary or oscillatory movement instead of reciprocation.
Patent GB-783450-A (GB)
Title: Synthetic resin ion-exchanging membranes
IPC: C08J5/22
Filed: 1955-02-07
Abstract: Synthetic resin ion exchange membranes comprise an insoluble condensation product of formaldehyde and an ether of an aromatic hydroxy compound, said resin containing as an ion exchanging group a sulphonic acid group and/or a carboxylic acid group, or, a basic nitrogen group, and having an etherified aromatic hydroxy group but no free phenolic groups.  The condensation products may be cast while still liquid on to a support and gelled to form a membrane. Specified basic nitrogen groups are amino groups, e.g. alkylated amino groups.  In the examples membranes are made from (1) sulphonated anisole and formaldehyde; (2) phenoxy-acetic acid, sulphuric acid, the sodium salt of 2,4-benzaldehyde di-sulphonic acid formalin and paraformaldehyde; (3) phenoxy-ethyl trimethyl ammonium chloride, paraformaldehyde, diphenyl ether and sulphuric acid; (4) phenoxy ethyl chloride, a mixture of polyethylene-polyamine bases of B.P. in the range 150 DEG  to 200 DEG  C., ethylene chloride, sulphuric acid, formalin, paraformaldehyde and diphenyl ether; (5) phenoxy acetic acid, p-toluene sulphonic acid, diphenyl ether, formalin and paraformaldehyde.  The gelling may be carried out by uniform heating, e.g. between two glass plates, or, on a mercury surface in a covered container.  A support of an inactive material such as a coarse mesh fabric of a plastic resistant to elevated temperatures and acids, e.g. polyvinyl chloride or polyvinylidene chloride may be incorporated in the membrane which should be washed free of acid before use. Specifications 700,867, 726,782 and 740,840 are referred to.
Patent GB-1159362-A (GB)
Title: Handling devices incorporating Gripping Members
Inventor: DUTHION LOUIS
IPC: B66C1/46
Filed: 1966-05-04
Abstract: 1,159,362. Inflatable grippers for handling loads. SOC. BERTIN & CIE. 4 May, 1966 [6 May, 1965; 17 Jan., 1966], No. 3628/69. Divided out of 1,159,361. Heading B8H. [Also in Division F2] Apparatus for pulling or sliding a plurality of hollow articles 40 through a pipe or passage 39 comprises a plurality of inflatable tubular chambers 3 attached at one end to a common support plate 1 and each being connected at the other end to a further inflatable chamber to form a train of such chambers. The chambers are inserted into the articles 40 and then inflated to grip said articles. The first chambers 3 may be rigidly connected to the support plate or they may be mounted in slots (11), Fig. 4 (not shown), to vary their radial spacing in order to accommodate different sized articles. Adjacent chambers in end-to-end relation are mechanically linked by springs 59 and the interior of the chambers linked by a flexible duct 54. Air is supplied to and withdrawn from the chambers by way of a flexible hose 46 and passageways 43, 44 in the support plate 1. In alternative embodiments (not shown) the inflatable chambers may have shoes to engage the load and adjacent chambers may be connected by bellows.
Patent GB-988780-A (GB)
Title: Improvements in or relating to devices for maintaining between two predetermined values the pressure in hydraulic circuits
IPC: G05D16/10
Filed: 1962-01-31
Abstract: 988, 780. Fluid-pressure servomotor systems. ANDRE CITROEN S.A. Jan. 31, 1962 [Feb. 28, 1961], No. 3719/62. Heading G3P. A device for maintaining pressure in an accumulator Ac between two predetermined limits, the accumulator being supplied with fluid from a supply A past a non-return valve S and having an outlet Y to a circuit comprises two slide valves T<SP>1</SP>, T<SP>2</SP> subjected at one end to accumulator pressure and loaded to the position shown by springs R<SP>1</SP>, R<SP>2</SP> in separate chambers E<SP>1</SP>, E<SP>2</SP>. The spring R1 is calibrated to balance a force due to the lower limit pressure acting on valve T<SP>1</SP> and spring R<SP>2</SP> is calibrated to balance the upper limit pressure. The chamber E<SP>1</SP> is connected to the supply A by a restricted passage F and to drain B by a passage H under control of the valve T<SP>2</SP>. The chamber E<SP>2</SP> is connected to the drain B by a passage K and the valve T<SP>1</SP> controls connection of the supply A to the drain B. In operation fluid is fed to the accumulator until its pressure reaches the upper limit when valve T<SP>2</SP> moves downwards to open chamber E<SP>1</SP> to drain. The fall in pressure in chamber E<SP>1</SP> allows the valve T<SP>1</SP> to move downwards and connect the supply A to drain B. When the pressure in the accumulator drops below the upper limit the valve T<SP>2</SP> moves upwards but due to the restricted passage F, the valve T<SP>1</SP> remains open until the pressure in the accumulator reaches the lower limit when the valve T<SP>1</SP> again closes. If the fall in the accumulator is slow the valve T<SP>1</SP> closes before the lower limit is reached.
Patent GB-208943-A (GB)
Title: Improvements in collapsible boxes, packing cases and the like
IPC: B65D6/16
Filed: 1923-02-08
Abstract: 208,943. Hubberstone, H. Feb. 8, 1923. Knock-down boxes; corner strengthening-pieces. -In a packing case of the type in which the walls are hinged to the bottom and are adapted to fold inwardly on one another, two opposite walls 4 are connected to shallow base pieces 5 by double joints of the hinge-butt type. The links 9 forming the joints are hinged about angle-iron cornerpieces 8, 10 secured to the walls and base pieces. The walls may be held in the erect position by pivoted catches 12 or by bolts &c. passed through holes in one pair of opposite walls and engaging tapped holes in the other two walls.
Patent GB-1474312-A (GB)
Title: Apparatus for parking vehicles
IPC: E04H6/06
Filed: 1975-01-29
Abstract: 1474312 Multiple platform vehicle elevators MPB METALL-UND PARKSYSTEM-BAU GmbH 29 Jan 1975 [1 Feb 1974] 3868/75 Heading B8L Apparatus for parking vehicles on at least two superimposed platforms 19, 20 comprises a pit and a drive-in surface 11, a common drive being provided for moving the platforms between positions in which either the upper platform 19 or the lower platform 20 is aligned with the drive in surface 11, the two platforms being pivotally mounted at 18 to slides 17 vertically slideable along rails 16 at the sides of the platforms. The two platforms which are maintained substantially parallel to each other by interconnecting links 24, pivot from the full to the inclined broken line positions shown, upon elevation by hydraulic rams 21 extending between the pit bottom and pivots on the platform 19, the pivoting being restricted by stops 25 on the platform 19 engaging the slides 17. The two rams 21 are interconnected by a chain and sprocket arrangement to ensure synchronous operation thereof. The lower platform 20 is bent about a central transverse line to reduce the entry angle for a vehicle moving on to the platform 20 from the surface 11. In the embodiment of Fig. 2 (not shown) the platform interconnecting links are close to the front ends of the platforms and diagonal links between the platforms control the tilting thereof during elevation. A hook is provided on the upper platform for locking engagement with locking projections on the guide rails. In the embodiment of Fig. 4 (not shown) three superimposed platforms are disclosed, all of which are straight and parallel.
Patent GB-1407232-A (GB)
Title: Heating of billets
IPC: B23D31/00
Filed: 1972-01-27
Abstract: 1407232 Shearing; forging; rolling INDUCTOTHERM EUROPE Ltd 17 April 1973 [27 Jan 1972] 3901/72 Headings B2W B3H and B3M [Also in Division H5] A metal billet is heated prior to cropping, forging, rolling &c. by means of a pair of electrodes (22) (Fig. 2, not shown) gripping the billet at one end and mounted on columns 10, and a pair of electrodes (32) (Fig. 3, not shown) mounted on a carriage 38 movable along a top beam 14 to enable the electrodes (32) to grip the other end of the billet. Associated with the fixed electrodes (22) is a fixed pair of bus-bar assembles 50. A second pair of bus-bar assemblies, 52, is connected to respective electrodes (32) and each assembly includes a knuckle joint 58, 60 to accommodate movement of the carriage 38. A further carriage or carriages such as carriage 62 may support sections 54, 56 of the assemblies 52. An electrically-conductive joint between the sections of the bus-bar assemblies comprises a headed pin passing through aligned apertures in adjacent sections and Bellville washers located one on each side of the sections and stressed by a nut engaging a threaded portion of one pin. In operation, a billet is moved to the left, Fig. 1 up to a ganging stop by V-section rollers 16a of a conveyer 16 and raised to electrode level by fluid-operated jacks (18) Fig. 2. The electrodes (32) are moved, if the length of the billet requires it, by a manually-controlled fluidactuated ram 44. Electrodes (22) and (32) are then advanced to grip the billet by fluidactuated piston and cylinder units and are supplied with electrical power. The period of heating may be controlled by a pre-set timer or a thermally-responsive switch. The preferred billet temperature for cropping is 500‹-600‹ C. For subsequent forging of the cropped blanks, further similar heating means may be provided or the billet may be raised to 1250‹ C. in the pre-cropping heater.
Patent GB-1294230-A (GB)
Title: Improvements in or relating to tool holding assemblies for lathes
Inventor: DAHL GUSTAF ADOLF
IPC: B23B29/04
Filed: 1970-01-27
Abstract: 1294230 Tool holding assemblies G A DAHL 27 Jan 1970 [28 Jan 1969] 3902/70 Heading B3T A tool holding assembly comprises a cylindrical block 1 which is clampable to the slide of a lathe and a tool-holder 2 which is secured to the block by a bolt 10 which is radially orientated with respect to the cylindrical block, the head 11 of the bolt engaging in a T-slot 12 in the holder. The holder has a part-cylindrical surface 9 which engages the surface 8 of the block, the holder being locatable on the block in two alternative positions. The surface 9 of the holder has a slightly less radius of curvature than that of the surface 8 of the block thus ensuring positive engagement between the holder and the block when the bolt is tightened. The bolt is tightened by way of a screw eccentric 14, 16 and screw means 7 is provided on the holder and which engages the block to effect adjustment of the tool holder axially of the block.
Patent GB-1245068-A (GB)
Title: Apparatus for continuously making a hose
IPC: B29C53/82
Filed: 1970-01-27
Abstract: 1,245,068. Helically wound pipe. TIGERS RUBBER CO. Ltd. 27 Jan., 1970 [4 Feb., 1969; 27 May, 1969], No. 3970/70. Heading F2P. An apparatus for the manufacture of hose from a tacky synthetic tape T, e.g. of PVC, comprises a plurality of cantilevered shaping rolls 3 in a circular array driven for rotation about their own axes at the same speed and a pressing roller 4 adapted to rotate opposite to the rollers 3 at a known speed. At least one of the rollers has an enlarged portion at the cantilevered end providing an annular guiding surface for the tape T to be fed into the space 9 so as to form an integral continuous hose H. As shown, the shaping rolls have enlarged heads 10 each providing an annular radial guiding surface; the axial lengths of the heads may be so dimensioned that they increase over the array in the direction of the tape movement by an increment corresponding to the width of the tape divided by the number of shaping rollers. A second embodiment (Fig. 1, not shown) has an enlarged portion formed at the cantilevered end of the pressing roller 4, to guide the tape T to follow a helical course. The space 9 is adjustable by movement of roll 4 by handwheel 8.
Patent GB-1096076-A (GB)
Title: Improved stable emulsion
IPC: A23L27/60
Filed: 1965-01-29
Abstract: Temperature-stable emulsions of soya oil (mayonnaise), cod-liver oil, petroleum or spindle oil in water have as emulsifying agent an esterification product of a partial higher fatty acid ester of glycerine and/or polyglycerine with a fruit acid which may itself be otherwise esterified (see Division B1). The emulsions may have pH of from 4 to 11.ALSO:Temperature-stable emulsions of soya oil (mayonnaise) in water have as emulsifying agent an esterification product of a partial higher fatty acid ester of glycerine and/or polyglycerine with a fruit acid which may itself be otherwise esterified (see Division B1).  The emulsions may have pH of from 4 to 11.ALSO:A temperature-stable oil-in-water emulsion comprises as emulsifying agent an esterification product of a partial higher (C12 to C22) fatty acid ester of glycerine and/or polyglycerine with a fruit acid, i.e. citric, tartaric or malic acid, the emulsion having a pH of from 4 to 11.  The fruit acid may have one of its carboxylic acid groups esterified with hydroxyl group-containing compounds other than the partial fatty acid esters, for example with hydroxy acids, and/or one or more of its hydroxyl groups esterified with a C2 to C4 monobasic acid.  Examples refer to emulsification of soya oil or cod-liver oil using an ester of citric acid and a stearic/palmitic acid esterified with glycerine; emulsification of petroleum or spindle oil using an ester of tartaric acid and a stearic/palmitic acid estified with glycerine.  There is reference to addition of carboxymethyl cellulose, carragheenates, alginates, albuminous substances, and unspecified preservatives.