baber/WOPTO huggingface dataset:
Patent GB-642949-A (GB)
Title: Improvements in or relating to process for preparing benzodioxane derivatives and the improved product resulting therefrom
IPC: C07D319/08
Filed: 1947-05-20
Abstract: 1 : 3-Benzodioxanes of the formula <FORM:0642949/IV (b)/1> are obtained by mixing vinyl acetate with ortho-hydroxy aromatic carboxylic acids such as those of the formula <FORM:0642949/IV (b)/2> in the presence of an acidic catalyst, where X is hydrogen, chlorine, bromine, nitro, methyl or methoxy, Y is hydrogen or methyl, or X and Y together are benzo.  The catalyst may be sulphuric, hydrochloric, nitric, phosphoric, acetic or benzene sulphonic acid, sodium bisulphate, boron trifluoride or zinc chloride.  Mercuric acetate may also be present.  Temperatures range from room temperature to the boiling point of the reaction mixture at normal or higher pressure. Polymerization of the vinyl acetate may be prevented by adding hydroquinone, para-tertiary butyl catechol or other inhibitor. Examples show the preparation of 2-methyl-4-keto-1 : 3-benzodioxane and the 8-methoxy-compound. Other 4-keto-1 : 3-benzodioxanes mentioned are the 2 : 8 dimethyl-, 2 - methyl - 6 - chloro-, 2 - methyl - 6 - bromo-, 2 : 8-dimethyl-6-chloro- and 2-methyl-6-nitro-compounds, as well as 2-methyl-4-ketonaphtho-[2,3]-1 : 3-dioxane, while the use of the following acids as starting materials is also mentioned: dimethylsalicylic acid, nitromethylsalicylic acid, methyl-methoxysalicylic acid and 2-hydroxy-1-naphthoic acid.  In the Specification as open to inspection under Sect. 91, it is stated that vinyl acetate may be reacted with thiosalicylic acid to give a similar product.  This subject-matter does not appear in the Specification as accepted.ALSO:2-methyl-4-keto-1:3-benzodioxane is used as an ingredient of perfumes and as an insecticide or insectifuge either alone or with other materials, e.g. solvents. diluents or dry powders.  It is a white powder having a melting point slightly below body temperature and a pronounced tendency to supercool, in this state being able to dissolve an appreciable amount of DDT.  Figures are given of its repellent action against mosquitoes by virtue of its vapour.
Patent GB-774624-A (GB)
Title: Improvements in or relating to devices for producing jets of sand or like granular or powder material
IPC: B24C5/04
Filed: 1955-05-10
Abstract: 774,624. Injectors. JOHNSON, J. A. and SEDGLEY, F. V. W. Jan. 2, 1956 [May 10, 1955], No. 13521/55. Class 71 [Also in Group XXIX] A stream of air or steam is directed axially into a cylindrical mixing chamber 10 through a nozzle 12, and meets a stream of sand or like material introduced through a passage 15, and the jet of sand &c. 22 ejected from the chamber is concentrated and maintained substantially concentric with the chamber axis by air drawn into the chamber, through circumferentially spaced passages 13 which converge towards the point where the chamber axis meets the axis of the passage 15.
Patent GB-608937-A (GB)
Title: Improvements in or relating to laminated springs
IPC: B60G11/107
Filed: 1944-07-15
Abstract: 608,937. Ball joints. WOODHEAD & SONS, Ltd., J., ONIONS, J. W., and BROOK, H. July 15, 1944, No. 13564. [Class 65 (ii)] [Also in Group XXXII] In a mounting for the end of a laminated spring of the kind in which the spring end is ball-mounted in a support, the ball is fixed to the spring end and is permitted to roll and/or slide in a slideway provided in a housing on the support. In the construction shownin Figs. 3 and 4, a ball member 4 has an annular recess 4a and cut-away lower sides 4b by which it is respectively located in slots in the back plate 2 and other plates 3. One end of the spring, Fig. 4, is free to move in a longitudinal direction by virtue of a bearing member 9 which has a spherical recess 9a for the member 4 and is slidable in a housing 5a. In a third construction, Fig. 10, a ball member 4<1> having a stem 11 bolted to the spring plates, bears in a cylindrical housing 5<1> closed by end plates 16 which may or may not carry locating bolts 15 having ends which are spherically faced to engage the ball. Alternatively, the ends may be provided with replaceable wear-plates which engage the ball. Both bolts may be adjusted to engage the ball or their ends may be spaced to permit longitudinal movement. All bearing surfaces may be hardened by nitriding &c.
Patent GB-749159-A (GB)
Title: Improvements in or relating to draw bending machines
IPC: B21D7/025
Filed: 1954-05-11
Abstract: 749,159. Angular bending. WESTERN ELECTRIC CO., Inc. May 11, 1954 [May 14, 1953], No. 13716/54. Class 83 (4). A tube bending machine includes a rotated bending head to which the tube is clamped and means adapted to push the rear end of the tube while it is being bent in synchronism with the rotation of the bending head. Rectangularsectioned wave-guide tubing 10, supported on a mandrel reciprocable by a piston-rod 17, is clamped by a member 13 to a rotatable former 12 on a shaft 20 and is guided at its free end by a longitudinally movable pressure member 14 co-operating with a support member 15. As the former is rotated, by an endless chain 26 driven by a motor 25, to bend the tube the rear end of the tube is pushed in the direction of the bending head by projections 44 on a head 40 moved along a guide rod 39 by a pivoted lever 45 rocked by the chain 26. The lever 45 is slidably pivoted intermediate its ends on a plate 54, adjustable transversely of the machine by a screw 56, and is pivoted at one end to the head 40 and at the other end to a block 30, guided on a track 38 and secured on one side directly and on the other side through a fluid pressure cylinder 27 to the chain 26. Tne arm 45 is comprised by an upper part 46 slidable on a lower part 47.
Patent GB-441105-A (GB)
Title: A process for separating lubricating hydrocarbon oils into their components
IPC: C10G21/04
Filed: 1934-07-12
Abstract: Hydrocarbon oils consisting of or containing lubricating oils are separated into their components by treating with two solvents led in countercurrent one of which consists of one or more saturated hydrocarbons containing at least 3 and not more than 11 carbon atoms, and the other consists of a selective solvent chosen from the group:--liquid sulphur dioxide, phenols, furfurol or its derivatives, chlorex (dichlor ethylether), aromatic or aliphatic nitro compounds, nitriles or aldehydes, organic rhodanides or amines, esters of mono- or poly-valent alcohols, ketones, alcohols, nitro aniline, or nitro anisole, the treatment being controlled so that the selective solvent removes substantially only aromatic compounds or components which are easily sulphonizable, poor in hydrogen, and of high refractive index and viscosity.  This separation treatment is effected by controlling the temperature, by addition of diluents such as benzol, toluol, ether or naphthalene, or by increasing the flow of one of the solvents.  The boiling range of the saturated hydrocarbon lies outside that of the lubricating oil being treated.  Saturated hydrocarbons specified are:--propane, pentane, butane, hexane, nonane, gasoline, petroleum ether, tetra hydronaphthalene or deca hydronaphthalene.  Selective solvents specified are: furfuryl alcohol, nitrobenzene, nitromethane, nitronaphthalene, acetonitrile, monochlor-acetonitrile, maleic nitrile, succinic nitrile, naphthonitrile, benzonitrile, methyl rhodanide, aniline, naphthylamine, methyl formate or acetate, glycol formate, benzyl, methyl or ethyl alcohol, glycol, thiophene aldehyde, propion aldehyde, acetaldehyde, benzaldehyde, acetone, methyl ethyl ketone or naphthyl phenyl ketone.  The pairs of solvents selected are preferably of different molecular weight to raise the critical solution temperature of the mixture.  A lubricating oil distillate which may be obtained by destructive or non-destructive distillation of a crude oil is introduced into the middle of an extraction column through which liquid sulphur dioxide and spindle oil flow in countercurrent.  The sulphur dioxide removes aromatic and asphaltic ingredients together with any sulphur coloured compounds, and is drawn off.  If saturated compounds are present in the extract the flow of the paraffinic solvent is increased. The extraction may be effected in a series of mixing and settling vessels or by introducing the oil and hydrocarbon solvent separately or mixed together at one end of the extraction column and the selective solvent at the other end.  The selective solvent may travel over a part of the column and a temperature gradient over that part may be applied.  The refined lubricating oil obtained from the saturated hydrocarbon extract may be submitted to a final treatment with sulphuric acid or with a bleaching earth.  The oils are dewaxed if necessary before the extraction treatment.  The process may also be applied to regenerating waste lubricating oils.
Patent GB-528492-A (GB)
Title: Improvements in or relating to the wrapping or packing of cigarettes or other rod-like articles
IPC: B65B19/10
Filed: 1939-05-08
Abstract: 528,492. Packing cigarettes. HARVEY, V. P., MAPSTONE, H. C., and MOLINS MACHINE CO., Ltd. May 8, 1939, No. 13765. [Class 94 (i)] Relates to a method of wrapping-up a batch containing an odd number of rod-shaped articles, particularly nine cigarettes. According to the invention, a package comprises two side - by - side groups 7, Fig. 13, each consisting of two continuous rows, and a single cigarette disposed between the groups and engaged by the inner cigarettes of each group. The cigarettes fall from a hopper into the spaces between vertical partitions 6, Fig. 3, whence they are fed in two superposed rows by a pusher 2 along a bedplate between vertical guides which squeeze the cigarettes slightly into a batch. For the purpose of the invention, one row contains five cigarettes and the 'other contains four, and this arrangement may be obtained by movable plates 9, 10 which project into one of the spaces in the feeder and are withdrawn alternately to release a single cigarette. Another means consists of a stop fixed in one of the spaces to prevent a cigarette from falling into the bottom row. The batch so fed is carried to a wrapping device; but before a wrapper is applied, the middle cigarette of the row containing five is moved to its final position. This may be done by a member which is moved through a slot in the bed to move the middle cigarette. Alternatively, the batch is moved 'over a wedge-shaped piece which extends lengthwise in the direction of movement of the batch. The middle cigarette also may be positioned in the feeder by making the middle two partitions 6, Fig. 14, shorter than the others, and curving their lower ends 60 inwards to support the cigarette. Also, a projection may be provided on the floor of the feeder to support the middle cigarette.
Patent GB-1468783-A (GB)
Title: Memory systems
IPC: G11C15/04
Filed: 1975-04-04
Abstract: 1468783 Digital data storage systems INTERNATIONAL BUSINESS MACHINES CORP 4 April 1975 [27 June 1974] 13815/75 Heading G4A A memory system in which the number and sizes of memory hardware modules 12 are variable includes means for applying at least part of a word address 10 to each module present, and writable control means 14 responsive to some of the bits of the address to apply to the modules access-enabling signals generated as a function of said bits and of the current contents of the control means whereby module addressing can be adjusted by rewriting the writable control means. As disclosed, ten bits of the address go to the writable control means, and to each module goes a subset of these bits together with the remaining bits of the address and a select output from the writable control means. The writable control means has a notional matrix of stored bits, having 64 columns and 32 rows. Five bits of the address are decoded to select 1 of 32 columns, and five more address bits are decoded to select 1 of the other 32 columns. This reads out 2 bits for each row, these two bits being ORed together to form a row signal which, if O, selects a corresponding one of the memory modules mentioned. Some row signals may not be in use (depending on the number of modules), and two row signals may be ANDed together. The 32 x 64 bit notional matrix may be formed of 4 chips, each storing 16 x 32 bits and having its own decoder. The correspondence between addresses received and locations in the set of memory modules depends on the bit values stored in the writable control means 32 x 64 bit notional matrix. Selection of a given module may be prevented completely by loading all 1 bits into one half of the corresponding row. If part of a row is defective, its use in selection can be prevented by loading all 1 bits into the good half of the row. For added reliability, the same information may be stored in two rows and both used to select the corresponding module. To change the information stored in the 32 x 64 bit notional matrix, a 6-bit address is used to select a column and a 5-bit address is used to select a row. One bit from each of these addresses are combined to select one of the 4 chips, and the other 5 bits of the column address select a column within the chip, this column being read-out, and then re-written after a new bit value has been supplied to a bit position in the column selected by the other 4 bits of the row address. Thus the information is changed a bit at a time, selection being row by row. The stored information can also be read-out similarly without rewriting.
Patent GB-247903-A (GB)
Title: Improvements in silencers for internal combustion engines
IPC: F01N1/12
Filed: 1925-05-27
Abstract: 247,903. Bie, O. S. Feb. 23, 1925, [Convention date]. Void [Published under Sect. 91 of the Acts]. Exhaust-silencers.-In an exhaust-silencer, the inlet and outlet communicate through a number of channels of gradually increasing length, so that the gases leave in an even flow. In the form shown in Fig. 2, the gases enter the central chamber 1 of a spiral passage 3 provided with slots 2 opening into a chamber 5, and pass through an opening 7 into an expansion chamber 6 leading to an annular passage 8 provided with an outlet 9. In a modification, the gases pass through slots 3, Fig. 4, and a chamber 10 to annular chambers 12, 13 connected by a passage 14, baffles 16, 17 extending respectively across the chambers 13, 12 on either side of the passage 14. The gases which enter the chamber 12 pass direct to an outlet 15, but those entering the chamber 13 are caused by the baffles to pass around the chamber 12 before reaching the outlet. In a further modification, the gases pass through a helical slot 20, Fig. 6, to a V-shaped channel opening into an annular chamber surrounding the outlet pipe 22. As shown is Fig. 7, the gases enter a tube 26, escape through a slot 24 to an outer chamber 25, and pass through slots 34 to a U-shaped pipe 35, one limb of which is provided with an outlet. In a further construction, inlet and outlet parts 36, 38 are provided with circular, oval. or like baffles 39, 40 adjacent to corresponding baffles 41. 42 formed on a central part 37. slots 44, 45 being left between the baffles. Alternatively, the device may comprise a casing containing perforated discs so arranged that the gases can pass through shorter or longer paths to the outlet. The silencer may be water-cooled or provided with cooling ribs.
Patent GB-601004-A (GB)
Title: Improvements relating to magnetically-operated sealed-container switches
IPC: H01H29/18
Filed: 1942-10-02
Abstract: 601,004. Magnetic switches. CIANCHI, A. L. Oct. 2, 1942, No. 13877. [Class 38 (v)] A switch E is held in one position by a stationary magnet F and moves to its other position when a movable controlling magnet C, carried by a float B approaches and neutralizes its influence. The switch E is of a kind. described in Specification 559,453. Other forms of switch may be used such as the mercury switches described in Specifications 485,259 and 493,355. There may also be two stationary magnets.
Patent GB-1499403-A (GB)
Title: Pad unit for facilitating the orderly application of characters to a sheet or strip
IPC: B41B13/00
Filed: 1975-04-04
Abstract: 1499403 Applying characters to a sheet C A NORDENSTAM 4 April 1975 [9 April 1974] 13953/75 Heading B6C A device which facilitates the application of individual characters to a sheet in their desired positions, comprises a support 1 having raised 'rims 11, 12 with parallel inner edges 13, 14 defining an area 2 for the reception of a sheet or strip of paper, or, preferably, for a tablet 5 slidable between the edges 13, 14, and supporting a sheet 6. The device also incorporates a transparent cover 3 hinged to rim 11 and provided with a transverse slot 9. The lower edge 9b of slot 9 is provided with a ruled scale 10, while the tablet 5 may be provided with at longitudinal scale 7 co-operating with index means 8 on rim 12. In use, the scales assist line- and letter-spacing of characters, which .are preferably individually applied from a transfer sheet -on to sheet 6. In alternative embodiments the tablet 5 can be dispensed with, and  a strip of paper fed between reels at opposite ends of support 1.
Patent GB-238332-A (GB)
Title: Improvements relating to walls and to blocks therefor
IPC: E04B2/56
Filed: 1924-06-10
Abstract: 238,332. McLean, D. June 10, 1924. Slabs.-A reinforced concrete slab 5 is provided around its periphery with a rabbet 8 adapted to receive a wooden frame 3 fixedly attached to the slab. A sheet 4 of expanded metal &c. for reinforcing the slab is stapled to the edge of the wooden frame during moulding. Specification 153,758 is referred to.
Patent GB-1174153-A (GB)
Title: Method of Making a Salt-rejecting Membrane
IPC: B01D69/14
Filed: 1967-03-28
Abstract: 1,174,153. Reverse osmosis; dynamic permeable membranes. UNITED STATES ATOMIC ENERGY COMMISSION. 28 March, 1967 [9 May, 1966], No. 14035/67. Headings BIX, B2E and B2K. A dynamic permeable membrane capable of rejecting solutes is prepared by passing an aqueous phase containing a dispersable material through a permeable substrate, the dispersable material comprising colloidal particles i.e. particles having diameters from 0.005 to 0.2 micron, formed from a water-soluble salt of a polyvalent metal capable of forming a hydrous metal oxide. The polyvalent metal may be tri and tetra-valent metals e.g. iron, zirconium, tin (IV) and thorium or penta or hexa-valent metals e.g. Nb(V), Ta(V) or U(VI) and the water soluble salt may be selected from the chlorides and oxychlorides. The aqueous phase being passed through the substrate may contain colloidal particles in a concentration of more than ten parts by weight of hydrous metal oxide per million parts of aqueous phase. An acid e.g. hydrochloric acid, may be separated from a metal salt e.g. a metal chloride, by passing a solution containing the acid and the metal salt through a dynamic membrane formed on a permeable substrate as described above. The substrate may have pores of diameter 30 A to 20 microns and may be of metal e.g. silver frit, porcelain, sintered glass, porous carbon, or organic materials such as porous paper.
Patent GB-994237-A (GB)
Title: Improvements in or relating to guide roller carriages for gasholders and like containers
Inventor: TORDOFF ALBERT
IPC: F17B1/00
Filed: 1963-04-09
Abstract: 994,237. Guide roller carriages for gasholders. OXLEY ENGINEERING CO. Ltd. April 7, 1964 [April 7, 1963], No. 14087/63. Heading F4X. A guide roller carriage for a gasholder or like container has rollers 24 adapted to engage on opposite sides of a guide rail (not shown), each roller being fixed on a rotatable spindle 15 mounted to have also a limited axial movement and having a fixed protective annular shrouding 27 extending over a part 23 of the spindle and sealing means to prevent the ingress of moisture and/or dirt to the bearings 16 and to resist the egress of lubricant. The carriage is substantially the same as that described in Specification 888,078 except in the details of the bearings and rollers. The spindle 15 is mounted in two bearings 16 between which is a chamber 29 for lubricant introduced through the nipple 31. Axial movement of the spindle is limited by a removable plate 19 at one end and by the larger diameter of the spindle head 23 at the other. Plate 19 is protected by a housing 20 having a removable cover plate 21 with an air hole 22. In the form shown the annular shrouding 27 is fitted with an oil seal 28. In a modification (Fig. 4, not shown) the shrouding 27 comprises an annular channel member on to which are clamped removable felt washers, the inner peripheries of which bear on the spindle head 23.
Patent GB-925450-A (GB)
Title: Improvements in high voltage supply apparatus
Inventor: BALDWIN JOHN LEWIS EDWIN
IPC: H02M3/04
Filed: 1960-04-22
Abstract: 925,450. Converting. BUSH & RANK CINTEL Ltd. April 24, 1961 [April 22, 1960], No. 14191/60. Class 38 (2). Variations in the filament or heater current of the thermionic rectifier 5 due to changes in the pulse repetition rate of the timebase output valve 1 are reduced by an impedance 8 which either by itself or in conjunction with the filament resistance or in conjunction with a further impedance has a time constant which is large compared with the pulse duration. As shown, the impedance is an inductor. In other embodiments a capacitor (Fig. 3, not shown) or a capacitor and diode (Fig. 4, not shown) are utilized. In this latter embodiment the filament is preferably shunted by a Zener diode. The inductance 8 may be the leakage inductance of the transformer (Fig. 2, not shown).
Patent GB-915053-A (GB)
Title: Cushioning device
Inventor: SAXTON STUART AUDLEY
IPC: F16F13/00
Filed: 1958-05-03
Abstract: 915,053. Pneumatic shock absorbers. RIDLEY INDUSTRIAL Ltd. July 28, 1959 [May 3, 1958], No. 14209/58. Class 108(3). A cushioning device comprises an elastic sleeve 10, which may be peripherally corrugated, extending between plates 12, 13 at each end which clamp the sleeve, a non- return inlet valve 16, a calibrated restrictor orifice in the plates at one end and springs 17 which distend the sleeve 10 as they are compressed. A circular device is shown having six pairs of generally U-shaped springs provided around the inside of the sleeve. In an alternative device of rectangular plan form springs are provided at the ends and the top is formed integrally with the sides. The non-return inlet valve may also act as a pressure relief valve. The Provisional Specification describes a construction with a pair of nesting cylinders from which air escapes when the device is compressed through the working clearance or through one or more holes in the wall of one of the cylinders.