baber/WOPTO huggingface dataset:
Patent GB-444935-A (GB)
Title: Improvements in the manufacture of cellulose derivatives
IPC: C08B3/26
Filed: 1935-07-20
Abstract: Cellulose acetates are separated into fractions of different solubility characteristics by extracting them with aqueous solutions of acetone.  The cellulose acetates treated may be the acetone soluble cellulose acetates, or the acetates of higher acetyl value. The extraction may take place at normal or elevated temperatures, in a single stage or in several stages. Advantageously, when working with solutions of acetone in water in stages, the acetone concentration in the solution is progressively increased.  For general purposes, one extraction with aqueous acetone containing 20 per cent of water is sufficient.  In an example, acetone-soluble cellulose acetates of normal viscosity are mixed or ground with acetone/water mixtures containing from 35 to 60 per cent of water. In each case the material is filtered and the filtrate evaporated. The insoluble portion remaining after filtration may be spun by normal methods. In a second example, a high viscosity cellulose acetate is twice extracted with aqueous acetone containing 40 per cent of water. The residue is dissolved in acetone containing less than 10 per cent of water, and spun by the customary methods.  Yarns produced from the treated cellulose acetates are stronger than those from the original cellulose acetates, even when saponified completely or to a considerable extent.  The cellulose acetates dissolved out by the aqueous acetone solutions, are of lower acetyl content and/or viscosity, and after separation from solution, e.g. by evaporation, may be used in the preparation of lacquers.
Patent GB-1469955-A (GB)
Title: Method of applying a resinous solid coating composition to a  substrate
IPC: D06M23/00
Filed: 1974-05-10
Abstract: 1469955 Laminates LA LAINIERE DE PICARDIE 10 May 1974 [16 May 1973] 20698/74 Heading B5N [Also in Division B6] A method of applying a resinous solid coating, which is continuous or discontinuous, to a substrate, by dissolving a resinous cross-linkable mixture in a suitable solvent, the mixture including a vulcanizing agent and a plasticizer, the mixture being capable of retaining its fusability properties for a period in excess of one year, applying a coating of this solution to a temporary support at a temperature below that at which cross-linking takes place, allowing the coating to form a film, applying the exposed surface of the film to the substrate and effecting transfer and cross-linking by pressure at a temperature of 0-300‹ C. The cross-linking preferably takes place under neutral conditions of pH. The resinous solid is preferably a blend of 78-80% polyvinyl butyral, 19-21% polyvinyl alcohol and 1-3% polyvinyl acetate. The composition may also include polyurethane or chlorinated polyolefin. The substrate may be a cloth.
Patent GB-940772-A (GB)
Title: Solid crystalline sodium-ammonium salt of caro's acid and process for its production
IPC: C01B15/08
Filed: 1960-06-13
Abstract: The sodium-ammonium salt of Caro's acid (NaNH4)(HSO5)2, with or without admixed sodium and ammonium sulphates and/or persulphates, in solid crystalline form, may be prepared by reacting a mixture of Caro's acid with sodium and ammonium hydroxides, carbonates, or bicarbonates, and evaporating the solution thus obtained to dryness at low temperature, if necessary after separating out the precipitated sulphates and bisulphates.  Alternatively a mixture of oleum with hydrogen peroxide and ammonium persulphate or sodium persulphate may be employed in place of the Caro's acid. The reaction may be carried out at 20-70 DEG  C., and the evaporation below 55 DEG C. and at reduced pressure. The hydrogen peroxide, ammonium persulphate, sodium persulphate, and the alkaline ammonium and sodium compounds may be used in the form of aqueous, preferably concentrated, solutions.
Patent GB-1204418-A (GB)
Title: Compressed air actuated tool
Inventor: MONACELLI UMBERTO
IPC: B25C1/04
Filed: 1968-05-01
Abstract: 1,204,418. Stapling machines. U. MONACELLI. 1 May, 1968 [9 May, 1967], No. 20723/68. Heading B4C.  A hand held pneumatic stapling machine comprises a safety device to prevent operation of the machine when not contacting a workpiece. The machine is controlled by a trigger-actuated valve 17 which, as shown, allows communication between a reservoir of compressed air 21 and a chamber 20 of a piston drive distributing valve. A work cycle of the piston is commenced when the trigger is squeezed thus cutting off supply of air from the reservoir to the valve 20 and connecting the distributing valve with bores 9-13, and when valve member 6 is moved against action of spring 7 by movement of plunger 4 upon contacting a work surface to permit chamber 2 to communicate via bore 5 with the atmosphere. Staple guiding plate 1 is detachably connected to the body K of the machine.
Patent GB-499361-A (GB)
Title: An improved supporting foot for furniture
IPC: A47B91/16
Filed: 1938-07-13
Abstract: 499,361. Ferrules. HEATH & SONS, Ltd., S., and HEATH, D. W. July 13, 1938, No. 20728. [Class 134] A supporting foot for furniture, e.g. a mantle rail, comprises a shoe 11 which is bent longitudinally, and is fitted with a bracket 15, carrying an upwardly projecting pivot 20, upon which an attachment member 25 is rotatably mounted. The shoe is closed at its ends by caps 13, and is adapted to contact with the ground at a point which is not located in the axis of the pivot 20. Ball bearings 27 are provided, and the foot 30 of the article of furniture rests on a flange 34 of the member 25, and is provided with a set screw 33 which engages a groove in the member 25.
Patent GB-320421-A (GB)
Title: Improvements in the conversion of hydrocarbons of high boiling point range into others of low boiling point range
IPC: C10G1/06
Filed: 1928-07-07
Abstract: 320,421. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). July 7, 1928. Divided on 315,991. Hydrogenation, destructive; hydrocarbons, cracking.-Oils, tars &c. are converted into products of low boiling point by heating them in the presence of organic amides or amines with or without aldehydes or ketones containing more than four atoms of carbon in the molecule. The process may be carried out in the presence of hydrogen or other gases and under atmospheric or higher pressures, the temperature being maintained between 400 and 600‹ C. Metals, their oxides or their salts may be employed in conjunction with the amines, the salts preferably being capable of combining with the aldehydes or ketones, e.g. sodium hydrosulphite which reacts with formaldehyde to give sodium formaldehyde sulphoxylate. 100 parts of tar are heated with 2 parts formamide to 600‹ C. in a quartz column filled with pumice giving a product 31 parts of which boil below 200‹ C. In other examples the reagents used include acetamide and hexamethylenetetramine, aniline and copper-cobalt-oxide zeolite, quinoline and calcium bromide.
Patent GB-719894-A (GB)
Title: Process for producing aralkyl hydroperoxides and the resulting aralkyl hydroperoxides
IPC: C07C409/12
Filed: 1952-08-21
Abstract: In the preparation of aralkyl hydroperoxides by oxidizing aralkyl compounds of the formula <FORM:0719894/IV (b)/1> in which Ar is an aryl or alkaryl group, R1 a hydrogen atom or alkyl group and R2 an alkyl group, the aralkyl compound is first treated with an aqueous solution of a mercuric salt to render it more easily oxidizable and is then oxidized in the liquid phase with molecular oxygen.  Suitably a solution in which the concentration of the mercuric salt is between 3 per cent by weight and saturation, preferably about 5 per cent, is used, and the aralkyl compound is repeatedly agitated with quantities of this solution which are between 3 and 20 per cent by volume of the aralkyl compound.  One or more washings with a basic aqueous liquid such as aqueous sodium hydroxide may be interposed between the washes with the mercuric salt followed by a final washing with water.  A suitable procedure comprises agitating the aralkyl compound for 8 periods of 10 minutes with quantities of 10 per cent by volume of fresh 5 per cent mercuric acetate solution, for two periods of 5 minutes with 20 per cent by volume of 2N sodium hydroxide and for two periods of 5 minutes with 20 per cent by volume of water.  The aralkyl compound may, if desired, be pretreated with an alkylation catalyst such as sulphuric acid.  In examples: (1) cumene is washed successively with 96 per cent sulphuric acid, water, caustic soda solution, mercuric acetate solution, caustic soda solution and water and is then oxidized by air to cumene hydroperoxide; (2) p-cymene is treated as in (1) and oxidized with oxygen to give p-cymene hydroperoxide; and (3) di-isopropyl benzene (mixed isomers) is treated as in (2) to give the hydroperoxide.  Specifications 626,095, 630,286, 649,286, 663,445, [Group IV (a)], 705,640 and 719,895 are referred to.
Patent GB-722370-A (GB)
Title: Improvements in the production of condensation products having tanning action
IPC: C14C3/20
Filed: 1952-08-21
Abstract: Condensation products having a tanning action are produced by reacting a dihydroxy-diarylsulphone, a sulphurous acid salt and formaldehyde in the molecular proportions 1 : 0.8-1.2 : 1-2, the salt and formaldehyde or a mixture thereof being added to the sulphone in portions while heating to bring about reaction during and/or after each addition.  In modifications the salt and formaldehyde may be added continuously over a period of more than one hour, or the formaldehyde added continuously to a mixture of the salt and sulphone.  In examples: (1) a mixture of 4,41-dihydroxy-diphenylsulphone, sodium sulphite and formaldehyde were heated for four hours at 145-155 DEG  C. in a pressure vessel. After cooling to 100 DEG  C. more sulphite, formaldehyde and water were added and the whole heated to the same temperature as before for five hours.  The mix was again cooled and a further addition made followed by heating for six hours. Unconsumed sulphite was then removed by heating with sulphuric and formic acids.  (2) Similar to (1) but with the addition of caustic soda and heating for eight hours to 150-155 DEG  C. at each stage. (3) Formaldehyde was added continuously over a period of 10 hours to a mixture of 4,41-dihydroxy-diphenyl-sulphone and sodium sulphite heated to 140-145 DEG  C.  After the addition heating was continued for two hours.  Specification 426,006 is referred to.
Patent GB-729114-A (GB)
Title: Improvements in or relating to apparatus for spreading and controlling trawl nets and the like
IPC: A01K73/045
Filed: 1950-08-24
Abstract: 729,114. Trawl boards. CHANT, J. Feb. 1, 1951 [Aug. 24, 1950], No. 21001/50. Class 48: A trawl board consists of a plurality of sealed air tubes 9 assembled within a frame to form a corrugated surface, on each side of the board, at least some of the tubes being removably supported in the frame. The frame is rectangular and is formed by a sealed head tube 2 and an open-ended keel tube 1, both tubes being bent at their forward portions and butt welded at 3. Transverse plates are welded to the head and keel tubes, two 7, 8 at the front, one 6 at the middle and two 4, 5 at the rear of the board. The sealed air tubes forming the surfaces of the board are disposed with their ends located between the front and rear transverse plates and are held in position by an end plate 10 pivoted to the rear transverse plates and held in closed position by a bolt 14. The rear transverse plates 4, 5 and the end plate 10 may be replaced by a plate of U-section pivoted to the keel tube. Two sealed air tubes 9a disposed on opposite sides of the longitudinal centre line of the board are welded to the head and keel tubes and to the transverse plates 4, 5, 6 and each is provided with three cleat plates 15, 16, 17 extending through the tube and apertured on both sides of the board for the reception of pins 18 for connecting V-shaped frames 19, 20 to the board. The two tubes 9a may be at equal or unequal distances from the longitudinal centre line of the board and the legs of the V-frames may be unequal or equal. Two sealed air tubes 9b adjacent the keel tube may be divided by partitions 25 into forward and rear compartments which may be flooded at will. The keel tube, the head tube and the two sealed air tubes 9a carrying the cleat plates are made of heavier gauge than the other tubes. The keel tube may be replaced by a solid bar. Specification 625,083 is referred to.
Patent GB-721848-A (GB)
Title: Improvements in power mechanism
IPC: B23Q5/26
Filed: 1952-08-21
Abstract: 721,848. Fluid actuation of switches. ROCKWELL MANUFACTURING CO. Aug. 21,1952 [Aug. 22, 1951]. No. 21002/52. Class 38 (5). [Also in Group XXII]. A switch assembly for controlling a power mechanism, e.g. the drill of Specification 710,335, [Group XXII], comprises a pressure responsive switch having an actuating plunger connected to a movable wall of an expansible chamber and associated with means for limiting the movement of the plunger and the wall in both directions. The switch is contained in a housing 60 secured to the drill cylinder 20 and connected by a conduit 130 to the cylinder space 26, so that the pressure in the space is applied to the interior of a chamber 122 containing a bellows 118 to which the plunger 124 is secured. The plunger co-operates with the operating knob 86 of a switch 59 which may be connected to be" normally-closed " or " normallyopen." A spring 114, which is adjustable by a screw 108, acts on an enlargement 112 of the plunger, the part 112 being movable between the end surface of a counter-bore 100 and the opposed surface of a block 102, the movement being limited to a few thousandths of an inch. The housing 60 also contains a switch 64 having an operating knob 62 projecting through the wall of cylinder 20 into the path of a part 22 of a piston 24 in the cylinder 20. The switches are arranged to control a valve which controls the drill.
Patent GB-1511764-A (GB)
Title: Method and apparatus for monitoring spun thread for defects in open-end rotor spinning machines
IPC: D01H13/26
Filed: 1976-05-21
Abstract: 1511764 Monitoring thread thickness SCHUBERT & SALZER MASCHINENFABRIK AG 21 May 1976 [25 June 1975] 21041/76 Heading G1N The instantaneous thickness of thread F, Fig. 3, obtained from an open-end rotor spinning machine 10 determines the tension in the thread which is measured by passing the thread over a pin 32 at the free end of a cantilever beam 31, Fig. 1, the resulting displacement of the beam being measured by the differential change in inductance of two coils 40, 41 mounted one on each side of the beam. The coils 40, 41 are connected in a bridge network 4, Fig. 2, normally balanced with an initial tension in the thread and the bridge output signal is amplified at 5 and averaged over a running short period at 6. A proportion of the instantaneous thickness signal from amplifier 5, as determined by potentiometer 7, is compared at 70 with the average value to produce an alarm and stop signal from unit 9 when an oversize slub is sensed: a proportion of the average thickness signal, as determined by potentiometer 8, is compared at 80 with the instantaneous thickness signal from amplifier 5 to produce the alarm and stop signal from unit 9 when an excessively thin part or a break in the thread is sensed.
Patent GB-787285-A (GB)
Title: Improvements in or relating to spinners for textile machines
Inventor: FINDLOW ERIC
IPC: D02G1/06
Filed: 1955-07-21
Abstract: 787,285. False-twist tubes. SCRAGG & SONS, Ltd., E. June 15, 1956 [July 21, 1955], No. 21076/55. Class 120(2) [Also in Group XXXIV] A twist-tube assembly comprises a hollow bolster 11 mounted on the base of an oil reservoir 10, spinner 17 rotatably mounted on the bolster and provided with passageways 23 and with a reduced diameter portion 18 separated by a space 19 from the bolster, rotation of the spinner causing oil to pass up the space 19 through the bearings 16, 15 and through the passageways 23 back to the reservoir 10. The spinner is provided with a sleeve 22 having oil passageways 24. A cup-like sleeve 20 with a peripheral flange 21 is mounted in the reservoir to surround the lower part of the bolster and the sleeve has a restricted passage 25 for entry of oil. When the assembly is in use yarn passes up through the bolster, through a tube 14, and around rollers 26 to a package winding device. The spinner 17 is rotated by means of an endless belt or tape.
Patent GB-134107-A (GB)
Title: Improvements in Rotary Internal Combustion Engines, Pumps, Compressors and the like.
IPC: F02B53/00
Filed: 1918-12-17
Abstract: 134,107. Turner, I. Dec. 17, 1918. Fixed-abutment type; back-pressure, reducing; packing vanes.-Relates to rotary engines of the type in which the rotor rotates in an oval casing and carries four vanes at right-angles to each other connected by four links hinged together to form a parallelogram. According to the invention, the blades c are carried by pistons d moving in cylinders e in the rotor, the pistons having the links f hinged to them at g. The cylinders e are connected by passages h to prevent back-pressure. The packing j may be of the kind described in Specification 132,138.
Patent GB-154336-A (GB)
Title: Improvements in and relating to card index systems
IPC: G06K21/02
Filed: 1919-08-27
Abstract: 154,336. Brown, G. L., Hubbard, W. S., and Wheeler, A. D. Aug. 27, 1919. Statistical apparatus; sorting cards. - Relates to card-index systems of the kind in which notches in the edges of the cards are placed to co-operate with selective means for locating them, and consists in means for locating a single card of a large number. A cover is provided which may be applied to any one of a number of card boxes, and is fitted with four selector bars 6, Fig. 1, each attached to a pair of racks 4 gearing with a pinion 11 so as to be set according to a scale 15. A series of ten spaces is allotted to each bar 6 as indicated on the templet 18, Fig. 6, which facilitates notching the cards. Thus, for card 7963 say, the selector bars so set, when the cover is applied to the card tray and the whole inverted, will allow only that card to fall and so to be located. For an extensive svstem the card trays may have permanent bars 17, Fig. 4, arranged so that only cards of a particular classification can be placed therein.
Patent GB-1302714-A (GB)
IPC: C08F22/02
Filed: 1970-05-04
Abstract: 1302714 Electrolytically preparing a dicarboxy-terminated polymer UNIROYAL Inc 4 May 1970 [9 May 1969] 21251/70 Heading C7B [Also in Division C3] High molecular weight dicarboxy terminated polymers are prepared by subjecting a dicarboxylic acid to electrolysis in an organic solvent having a dielectric constant not lower than 20 at 20C. and continuing the electrolysis in an ionizable environment. The solvent may be methanol, ethanol, dimethyl formamide, dimethyl acetamide or N-methyl pyrrolidone. Ionization may be promoted by the addition of a small amount of a base, e.g. triethylamine, sodium methoxide, benzyl trimethyl, ammonium hydroxide or choline. The anode may be of platinum and the cathode of platinum or mercury. The dicarboxylic acid may be of formula (R)(COOH) 2  where R is an alkylene, alkenylene, alkadienylene, alkylidene, alkynylene, alkadiynylene, arylene, aralkylene or alkarylene radical containing 1 to 18 carbon atoms and optionally substituted with hydroxy, ester, ether, nitrile or sulphide groups or halogen atoms. Many suitable radicals are specified and examples describe the preparation of carboxy-terminated polyethylene from (1) azelaic acid and (2) sebacic acid; carboxy-terminated isobutylene/methylene alternating copolymer from (3) dimethyl glutaric acid; and carboxy-terminated trans-polybutadiene from (4) trans-#-hydromuconic acid.
Patent GB-381980-A (GB)
Title: Vehicle seats
IPC: B60N2/20
Filed: 1931-07-25
Abstract: 381,980. Vehicle seating arrangements. NEW AVON BODY CO., Ltd. and TILT, A., Avon Body Works, Wharf Street, Warwick. July 25, 1931, No. 21289. [Class 103 (ii).] In a saloon or other closed motor vehicle, a part of the back support of the front seat is adapted to be swung forwardly about a substantially vertical axis over its associated seat cushion into a more or less out-of-the-way position, in order to facilitate access to the rear seat. Such an arrangement is illustrated in plan in Fig. 4. The hinges may be such that the part 4 is detachable from the part 2.
Patent GB-1210031-A (GB)
Title: Packages and a method of packaging
Inventor: PRATT ROBERT HUMPHREY
IPC: B65B9/06
Filed: 1969-04-26
Abstract: 1,210,031. Packaging flat articles. PRATT MFG. CORP. 26 April, 1969, No. 21393/69. Heading B8C. A method of packaging comprises continuously advancing web portions which are to form the opposite panels of a package 43, continuously folding the advancing web portions to form a "W" formation with the two webs of the inverted "V" at the base of the "W" sealed together and dropping merchandise in longitudinally spaced relationship on to the panel portions with the merchandise, e.g. surgical sponges (31), Fig. 8 (not shown), received in each lower edge fold of the "W" in conjunction with the webs of the inverted "V". Sealing is then effected along the upper longitudinal edges of the outer web portions of the "W", and along longitudinally-spaced transverse paths located between merchandise, the packages being cut off intermediate the width of said transversely sealed paths. As shown, a thin strip, e.g. of non- transparent white sulphate paper, or polyethylene, is drawn, from a roller 20, over the "V"- shaped forming end of a forming plate 22, the upfolded material being sealed together, e.g. by providing the underside of the upfold with a heat-sealable material 25 or, with adhesive from a gun 26, and passing the fold between rollers 27 which are heated when the strip 25 is used. The upper edge of the "V" fold is preferably trimmed off by slitter wheels 29, the sides of the strip 20 being held down on to the forming plate 22 before being folded up to complete the "W" as shown in Fig. 6, and the sponges, or other flat articles, are dropped in position as shown at 31. The upper edges of the "W"-formed strip are subjected to sealing pressure preferably between wheels 35 which are heated if heat sealing is required. If the strip is formed of white sulphite the upper edges of the strip emerging from the roll have pre-applied, longitudinal strips of latex. The sealed upper edge is preferably trimmed, at 36, by slitter wheels 37, the crossseals, between the sponges 33, being accomplished by pressure-bars 38 which are driven by wheels 39 and which are heated, as required, and the completed packages 43 being cut off at 40 by knives 41 driven by wheels 42. In a modification, Figs. 9, 10 (not shown), the method is substantially the same except that the web portions comprise two separate rolls (120) of strip which are arranged side-by-side, and can be made of different kinds of materials. Instead of two separate rolls (120) a single roll can be slit into two strips before entering the apparatus. In a further modification, Figs. 13, 14 (not shown), two separate rolls of strip are mounted on vertical axes, the upper edges of the two vertically disposed strips being glued together by pressure rolls (327) and trimmed at (340) by slitters (341) before being folded into "W"- formation. The method is then the same as that described with respect to Fig. 1.