baber/WOPTO huggingface dataset:
Patent GB-268317-A (GB)
Title: Improvements in or relating to walls
IPC: E04B1/82
Filed: 1927-03-08
Abstract: 268,317. Berliner, E. Ma.rch 24, 1926, [Convention date]. Non-conductive coverings. - A wall specially suitable for churches, concert halls, &c. is constructed with plurality of hollow cells adjacent its inner surface to impart the characteristics of diaphragms. In one construction, the cells are formed by securing troughs 2, Fig. 2, of cardboard, wire mesh, foraminous metal, &c. and of round or other section, to the base plaster 1 by nailing or otherwise, and applying a finishing layer 4 of ordinary plaster, cement, &c. but preferably the so-called acoustic plaster comprising a mixture of plaster, cement, &c. with a filler such as sawdust &c. This layer fills in the spaces between the cells. In another construction, cellular recesses 5, Fig. 6, are formed, in the base plaster over which a sheet 6 of paper, cardboard, gauze, &c. is secured and the finishing plaster layer 7 finally applied.
Patent GB-1218401-A (GB)
Title: Apparatus for removing dust or other particles from air extracted from enclosures
IPC: B05B14/46
Filed: 1968-02-09
Abstract: 1,218,401. Air washing apparatus. TUNZINI S.A. 9 Feb., 1968 [10 Feb., 1967], No. 6569/68. Heading B1R. Air extraction through a grating forming the floor of an enclosure such as a paint-spray booth is cleaned by passage through three consecutive curtains of water overflowing from troughs 24 and 25 as it follows a tortuous path between the arrangement of baffles shown to uptakes 50. The used-water collects in the central compartment 22 of a tank 16 and then flows via the outer compartments of tank 16 to a water-leaning arrangement where after cleaning it is re-circulated to the troughs 24 and 25 via pipes 70 and 71. In modifications the troughs 24 and 25 may be replaced by flat baffles and the baffles 37 and 38 may be replaced by a trough not having a control gap 43 through which water is discharged.
Patent GB-154500-A (GB)
Title: Improvements in seams for sewed articles
IPC: D05B93/00
Filed: 1920-03-05
Abstract: 154,500. Thompson, W. P., (Union Special Machine Co.). March 5, 1920. Stitches and seams.- In seams for sewed articles, particularly for uniting the edges of fabric sections to form. a pocket for a garment, the fabric sections 4 are united at their marginal portions by a line of double locked stitches 9 spaced from and parallel with a line of covering stitches 14 finishing the edges of the sections. The double locked stitches 9 serve to take the strain from the covering stitches. Figs. 5 and 6 are top and underside plans of the stitches, while Fig. 7 shows the formation of the double locked stitches. As shown in Fig. 3, at the pocket opening 2 the sections 4, instead of being united together, are each united to facing strips 3 and 8 of the garment material.
Patent GB-786212-A (GB)
Title: Improvements in and relating to the production of alkali-metal hyposulphites
Inventor: KRZESZ ZYGMUNT
IPC: C01B17/66
Filed: 1955-03-08
Abstract: Alkali metal hyposulphites are produced in anhydrous form by reacting sulphur dioxide with an alkali metal amalgam in non-aqueous medium consisting of a lower aliphatic monohydric alcohol of 1 to 4 C atoms, containing a small amount of an organic base.  The process is effected at a temperature not above 40 DEG  C., and preferably in the range - 10 DEG  to +5 DEG  C.  The organic base, which promotes the reaction and prevents decomposition of the precipitated hyposulphite, may be an aromatic or aliphatic amine; derivatives of carbamic acid or of cyanic acid; ammonia condensation products, e.g. hexamethylene tetramine; heterocyclic bases, e.g. pyridine, piperidine, quinoline and acridine.  A suitable apparatus (not illustrated) comprises a glass reaction vessel provided at its base with inlet and outlet tubes for the circulation of the amalgam, and a similar provision at the top for circulation of the liquid reaction medium.  Sodium amalgam having a sodium content of about 0.07 per cent is continuously introduced and removed from a pool maintained in the bottom of the vessel. Potassium amalgam may be used.  Methanol, ethanol or isopropanol containing 0.03 per cent of a base (numerous examples quoted) is introduced into the vessel in an atmosphere of nitrogen, and the temperature is maintained at -5 DEG  C. by a cooler in the circulatory circuit.  A stream of sulphur dioxide is introduced into the reaction medium while stirring gently, when the surface of the amalgam is also gently brushed.  Alternatively, a glass disperser may be used, injecting the sulphur dioxide below the surface of the amalgam.  After a short induction period the anhydrous hyposulphite crystals form a slurry in the alcohol, and this is circulated through a filter, and the filtrate returned to the vessel. The crystals are drained in a vacuum, and dried in a current of warm carbon dioxide.
Patent GB-1201672-A (GB)
Title: Process for producing 2,6 dimethylphenol
IPC: C07C39/07
Filed: 1968-02-12
Abstract: 1,201,672. 2,6-Dimethylphenol. SUMITOMO CHEMICAL CO. Ltd. 12 Feb., 1968 [15 Feb., 1967], No. 6880/68. Heading C2C. A process for producing 2,6-dimethyl phenol includes reacting 4-tert.-butyl-2,6-dimethylphenol with phenol in the presence of an acidic catalyst selected from the group consisting of inorganic acids, metal halides and aromatic sulphonic acids in an amount of 0À5 to 10% by weight of the 4-tert.-butyl-2,6-dimethylphenol at a temperature of 120 to 180 C. for 0À5 to 6 hours to yield 2,6-dimethylphenol and 4- tert.-butylphenol and separating by distillation 2,6-dimethylphenol from a mixture of 4-tert.- butylphenol, unreacted phenol, unreacted 4- tert.-butyl-2,6-dimethylphenol, 2-methylphenol and the catalyst. 4-Tert.-butylphenol may be subjected to hydroxymethylation to obtain 4- tert.-butyl - 2,6 - dihydroxymethylphenol and the latter reduced to obtain 4-tert.-butyl-2,6- dimethylphenol which is subjected to detertiary butylation as above and unreacted phenol, 2-methyl phenol and unreacted 4-tert. butyl-2,6-dimethylphenol recycled to the detertiary butylation and 4-tart.-butylphenol to the hydroxymethylation step. The process may be operated batchwise or continuously. Examples are furnished.
Patent GB-1464449-A (GB)
Title: Apparatus for cleaning floors
IPC: A47L11/00
Filed: 1974-02-15
Abstract: 1464449 Blasting TOKYO KOSEI KAKEN CO Ltd 15 Feb 1974 [30 March 1973] 6888/74 Heading B3D Apparatus for cleaning floors comprises mechanism for driving the apparatus over the floor, a centrifugal projector for projecting shot against the floor, and means for recovering the shot. The apparatus consists of a chassis 7 having a pair of front wheels 2, driven by an engine or hydraulically, and a single rear wheel 3 steerable by a hand wheel 5. A turntable 10 is rotatably supported by rollers 8, 9 on the chassis and carries a casing 13 of the centrifugal projector which comprises an impeller 14 belt driven from a motor 12. The impeller projects shot supplied from a hopper 15 and duct 16 through a rectangular slot in the turntable and guide 17 on to the floor to be treated. The turntable 10 has teeth on its periphery engaged by a pinion (42, Fig. 4, not shown) which is rotatable manually or mechanically to position the projection slot between positions parallel or transverse to the direction of travel of the apparatus to vary the effective width of the projected abrasive so as to be suitable for erasing a white line on a road or a wider area. A rubber seal 19 around the guide 17 assists the air suction of a scavenging pump, any remaining abrasive being directed into a casing 21 by a rotatable brush 20. A screw conveyer 23 carries the collected abrasive and debris to a vertically disposed bucket conveyer leading to the hopper 15. A duct 31 having an opening between the bucket conveyer and hopper is connected to a hose 29 leading to a filter 28 and suction device 27 driven by a motor 38 to separate the debris from the abrasive. Coarse rubbish drops through a metal net into a hopper 35. A further duet 30 connects a port 22 in casing 21 to the duct 29.
Patent GB-1162271-A (GB)
Title: Improvements in and relating to the Manufacture of Diamond Cutting Tools
Inventor: CULVER DONALD EDGAR
IPC: B24B9/16
Filed: 1967-02-14
Abstract: 1,162,271. Grinding. CULVER DIAMONDS Ltd. 15 May, 1968 [14 Feb., 1967], No. 6890/67. Heading B3D. A method of forming a diamond cutting tool comprises positioning a rough diamond in a die, forming a casting from a surface of which the diamond projects by introducing metal into the die, and grinding at least two inclined surfaces of the diamond whilst holding the casting in a recess of non-circular section during the grinding operations, means being provided to limit the degree of grinding permitted. The grinding is effected in apparatus having a holder 18 formed with a non-circular recess for the shank which is cast with the diamond 22 projecting from one end. The holder is carried by a cover 17 mounted on a tool post 14 secured by a screw 13 to a carrier 9 slidable vertically on uprights 52 mounted on a base 6. An anvil 7 on the base co-operates with an adjustable stop 16 on the carrier to limit the downward movement of the diamond relative to a rotating grinding wheel 23. The base is slidable along a guideway to permit movement of the diamond radially of the wheel 23. A number of holders may be arranged around one or a number of grinding wheels. A polishing operation may follow the grinding operation. The shank may then be formed by turning and thread forming so as to be mountable in a cutting apparatus.
Patent GB-124316-A (GB)
Title: Improvements in Grabs.
IPC: B66C3/06
Filed: 1918-04-24
Abstract: 124,316. Hone, G. J., and Westwood & Co., J. April 24, 1918. Grab-buckets. - Relates to a single-chain grab, adaptable also as a double-chain grab, for handling ore, coal, grain, &c. The buckets e are connected by links g to a cross-pin h, and by links q to a stirrup r slidably mounted on a vertical bar, which also, in conjunction with a second similar bar, guides the cross-head i. The chain &c. l passes through an aperture in the grabhead d, around a pulley k in the cross-head, to a pulley k<1> in the grabhead, and then passes around a second pulley k and up to a securing- device in the grabhead. The cross-head carries a hook n adapted to engage with the cross-pin h and having a tail-piece o adapted to engage a weight p slid able in vertical guides p<1>. With the buckets open as shown, hauling-in the chain closes the buckets and picks up the load, the tail-piece lifting the weight in its guides without the hook becoming disengaged by reason of the greater weight of the load. The grab is then swung to the required position and lowered on to the dump. Further paying-out of the chain lowers the cross-head so that the weight p acting on the tail-piece disengages the hook. The chain is then hauled in, the cross-head first rising to the top of its guides, and the buckets then opening to discharge the load. By providing a separate crane chain, the grab may be used as a doublechain grab.
Patent GB-117280-A (GB)
Title: Improvements in and relating to Milling Machines.
Inventor: WIRTZ LUIS
IPC: B23Q35/10
Filed: 1917-05-16
Abstract: 117,280. Wirtz, L. May 16, 1917. Lathes.-In a lathe for turning wood or metal to form a propeller blade or other article of non- circular cross section, a rotary cutter is traversed axially by a frame which is .oscillated by an axially moving former. The work e is rotated without axial movement by chucks d carried by spindles c which are mounted in bearings b. Rigid on the spindles c are sleeves g each having a slot g<1> engaged by a pin carried by a former f. The left-hand former f, and hence the work e, is rotated by a rope r and a chain connecting non-circular wheels n, o, Fig. 6, so that the surface speed of the non-circular work is more constant. The wheels o, q are carried by a slide l<2> having a fork k engaging a collar on the former and moved axially by a screw m which is rotated by open and crossed belts 16, 17. The direction of rotation is reversed by arms 19 engaging stops 20, 21 on the belt shifter 18. The screw m drives through gears 23, 24 the leadscrew v which has a quicker pitch so that the pattern must be shorter than the work. The sliderest u carries a lever t, Fig. 3, having roughing and finishing cutters s, either of which can be brought into operative position. The lever t slides on bars w of a frame which is rocked about pivots y, Fig. 4, by the formers f which engage either of the bowls z, Fig. 4, according to the pull on the rope 2. The formers rotate with the work but, if desired, the slots g' may be curved to give a small relative rotation thus producing a twist in the shape produced. The headstocks are connected by gearing 4, 6 and this also drives a toothed ring 7 on the centre of the work which is supported by idlers. The formers are larger in cross section than the form produced and are centred by screw pins 10. They may be in halves adjusted by eccentric bushes and united by cement, &c. To utilize the same former for both ends of a double propeller blade, after shaping one end, the cutter is moved to the opposite end of the work and the direction of rotation of the screw v is reversed by putting the wheel 25 in gear instead of the wheel 24 and the pin engaging the slot g' is replaced by one engaging an oppositely curved slot.
Patent GB-144819-A (GB)
Title: Method of and apparatus for producing lead salts
IPC: C01G21/00
Filed: 1919-03-21
Abstract: 144,819. Jackson, W. J. Mellersh-, (Sperry, E. A.). March 21, 1919. Lead salts; obtaining; electrolytes, circulating. - In the manufacture of insoluble lead compounds, such as the chromate or sulphate or white lead, the precipitant is transferred within the divided cell from the catholyte to the auolyte. A leaden anode is used. The anolyte may contain 2-3 per cent of sodium acetate and a little sodium carbonate or lead acetate. The catholyte initially contains sodium acetate and carbonate, bicarbonate, hydrate. or a mixture. During the process, its alkalinity should be much greater, say 50 times that of the anolyte, and the anolyte should contain from about 0.1 to 0.5 per cent of sodium carbonate and hydrate, so that precipitation takes place between the diaphragm and anode. The alkalinity is adjusted by regulating the absorption of carbonic acid, say from flue gases, by the catholyte. The gases may be purified in a scrubber 20 containing limestone and then meet the catholyte in a tower 16 containing coke or the like. The catholyte is circulated by a pump 15 and pipes 12, 13. Valves 14, 17 in the pipe 12 and in a by-pass 18 to the tower 16 facilitate regulation of the circulation. By thus regulating the carbonation of the catholyte, the proportions of lead hydrate and carbonate are varied. The best product contains both large particles rich in carbonate and small particles poor in carbonate. The anolyte is circulated through a settling tank 8 from which the product is withdrawn. The cathode 3, of iron, copper, or the like, may be contained in a frame 4 on each side of which is a diaphragm of parchment paper, vegetable parchment, or the like,
Patent GB-258626-A (GB)
Title: Improvements in and relating to the preparation of dyes
IPC: C09B9/00
Filed: 1925-03-17
Abstract: 258,626. Scottish Dyes, Ltd., Thomas, J., Harris, J. E. G., and Wylam, B. March 17, 1925. Leuco compounds of vat dyes, esters of.-Leuco compounds of vat-dyes, which may contain some unreduced vat-dye, are converted into water-soluble derivatives by treating them with one of the following reagents in presence of a metal and an organic base :-chlorsulphonic acid and its salts, oleum and its salts, alkylsulphuric halides, sulphuric anhydride, phosphorus oxychloride, alkyl phosphoric halides. The addition of the metal renders unnecessary the use of a closed vessel or an inert atmosphere. Examples are given of the production of stable derivatives from the leuco compounds of the following dyestuffs :-indigo, thioindigo, indanthrone, flavanthrone, and dimethoxydibenzanthrone, the preparation of the various leuco compounds is also described. As reagents are specified chlorsulphonic acid and methylsulphuric acid chloride, and as metals zinc, tin, magnesium, and copper bronze or a mixture of the latter with zinc. The products may be used for dyeing and printing without the use of vats. Specifications 23396/99, 186,057, 202,630. 202,632, 231,889, 245,587, 247,787, 248,802, and 251,491 are referred to.
Patent GB-496912-A (GB)
Title: Improvements in adjustable inductance
Inventor: CASE NELSON P
IPC: H01F21/00
Filed: 1938-03-08
Abstract: 496,912. Transformers. HAZELTINE CORPORATION. March 8, 1938, No. 7297. Convention date, March 31, 1937. [Class 38 (ii)] An adjustable inductance comprises two coaxial windings having the same mean dimensions and producing fields of the same shape but of opposite polarity, means being provided for relatively axially moving the windings, the fields being substantially coincident so as to neutralize each other in a limiting position. In the form shown in Fig. 2, one of the windings comprises two fixed cylindrical sections 10, 11 of such diameter that a third section 12 forming the second winding can just slide between them. The windings are arranged so that the resultant field produced by the sections 10 and 11 just cancels that produced by the winding 12 when it is in the position between the sections 10 and 11. Various windings connections parallel, series parallel and series are described. With the parallel connection the windings can be arranged so that in the position of zero inductance, the selfcapacity is very low. Fig. 7 shows a construction in which the movable coil 12 is mounted on a former 15 slidable on a guide rod 23 and operated by a screw 24 of variable pitch to give a straight line frequency change when the inductance is used in a resonant circuit.
Patent GB-688460-A (GB)
Title: Laminated floor and wall covering material and process of making the same
IPC: D06N3/06
Filed: 1948-11-10
Abstract: 688,460. Compound sheet materials. CONGOLEUM-NAIRN, Inc. Nov. 10, 1948. No. 7392/52. Divided out of 688,373. Drawings to Specification. Class 140. A flexible, laminated floor or wall covering is made by adherently attaching to a flexible fibrous supporting sheet a flexible patterned sheet consisting of differently coloured pieces of plasticised vinyl resin with a high filler content welded together at their edges. The resins, plasticisers, fillers, and the proportions in which they are employed may be as described in Specification 688,373. The patterned sheet is secured to the supporting sheet, which may be flooring felt, burlap, or cotton duck, and may be saturated with bitumen, by means of a bituminous adhesive, or by heat and pressure which may partly or entirely embed a woven fabric support in the patterned sheet. The difference in colour of adjacent pieces of vinyl resin may result from differences of a striated or grained effect.
Patent GB-691600-A (GB)
Title: Improvements relating to filters
IPC: B01D25/00
Filed: 1950-03-24
Abstract: 691,600. Filters. VAUDIN, A. H. June 18, 1951 [March 24, 1950], No. 7416/50. Class 46 A filter of the type comprising one or more stacks of plates between the faces of which the liquid to be filtered is passed is characterized by the fact that the plates are each formed of two substantially identical halves with their filtering edges actually greater in peripheral length than their overall linear dimension, whereby the' actual filtering surface area of each stack is greater than its overall area. In a filter press provided' with plate-members each consisting of a stack 2, Fig. 1, of long narrow plates having aligned apertures 3 and compressed by-screws 5, acting through a bar 6 in a rectangular framework 4, each plate may comprise two castellated halves 12 abutting at their ends as shown in Fig. 3. More economically, the half-plates 13 may be cut from a sheet Fig. 5 and assembled in pairs as shown in Fig. 4. Where they abut additional holes 17 or recesses 18 may be provided. The .ends 16 of 'plates of the type shown in Figs. 3 or 4 are fitted into grooves in the vertical limbs 15 of the frame 4 in known manner when forming the stack. The plates may be formed with ribs or indentations of exact dimensions for spacing their surfaces apart. Also they may be corrugated to increase their length in comparison with the width of a complete plate member.
Patent GB-925140-A (GB)
Title: Improvements in or relating to pneumatic actuators
IPC: F15B15/10
Filed: 1962-02-26
Abstract: 925,140. Stud-and-socket fastenings. MINNEAPOLIS-HONEYWELL REGULATOR CO. Feb. 26, 1962 [March 1, 1961], No. 7440/62. Class 44. [Also in Groups XXVI and XXIX]  A releasable connection between an end plate 21 and a cylinder 10 of a fluid-operated actuator (see. Group XXIX) comprises projections 32 which extend from the end plate and engage bayonet slots 11, 12 in the cylinder. A spring 50 or flexible plate may be secured by screws or nuts 30 to the end plate and engages the end of the cylinder to urge the projections into engagement with parts 12 of the slots.
Patent GB-1129544-A (GB)
Title: Preparation of salts of dicarboxylic acids
Inventor: RAY NEIL HUNTER
IPC: C01D7/00
Filed: 1966-02-21
Abstract: 1,129,544. Preparation of salts of dicarboxylic acids. IMPERIAL CHEMICAL INDUSTRIES Ltd. 24 Jan., 1967 [21 Feb., 1966], No. 7494/66. Heading C2C. Alkali metal salts of aliphatic dicarboxylic acids are obtained by heating a mixture of sodium or potassium hydroxide, a dihydroxy primary aliphatic alcohol and water under superatmospheric pressure, the composition of said mixture being such that per mole of alcohol there are present at least two moles of alkali metal hydroxide and at least one mole of water and the pressure being sufficient to maintain the reaction system in the liquid phase. The reaction is suitably effected at 250-400‹ C. and under a pressure of 50-500 atmospheres and the resulting salts may be acidified to yield the corresponding acids. In specific examples the sodium salts of oxalic, glutaric and succinic acids are prepared by the above process and the latter two are converted into the free acids by acidification.