baber/WOPTO huggingface dataset:
Patent GB-719144-A (GB)
Title: The preparation of methionine from ª‡-amino-ª†-methylthiobutyronitrile
Inventor: HOLLAND DAVID OLIVER
Filed: 1951-12-21
Abstract: In the manufacture of methionine by hydrolysis of crude methionine nitrile containing by-products which yield tarry matter on hydrolysis, a solution of the crude nitrile in an organic solvent or mixture of organic solvents is reacted with phosphoric acid or sulphuric acid so as to precipitate the corresponding phosphate or sulphate which is removed and hydrolysed, the solvent or solvents being such that the nitrile salt is substantially insoluble and the by-products substantially soluble therein. Preferred solvents are the low molecular weight aliphatic alcohols such as ethanol, iso-propanol and n-butanol; methanol alone may be used to treat the sulphate but not the phosphate-in the latter case, methanol in conjunction with a substantially equal volume of a solvent in which the phosphate is only sparingly soluble may be used.  Acetone and monoalkyl ethers of simple glycols, e.g. b -ethoxyethanol, are also suitable.  In examples: (1) concentrated sulphuric acid is added dropwise to a cooled solution of crude methionine nitrile in dry ethanol and the precipitated sulphate is filtered off and hydrolysed to methionine by refluxing with aqueous sulphuric acid; (2) phosphoric acid is added dropwise to an ethanolic solution of crude methionine nitrile and the precipitated dihydrogen phosphate is hydrolysed as in (1).  Use of dioxane, methylethylketone or ethyl acetate as solvent in place of ethanol in these examples results in a tarry product being produced; a similar result obtains using a 4 : 1-ether-methanol mixture in example 2.  The crude methionine nitrile may be prepared from b -methyl thiopropaldehyde by known procedures.
Patent GB-1221359-A (GB)
Title: Hydrostatic extrusion apparatus
Inventor: NILSSON JAN
IPC: B21B39/08
Filed: 1968-06-25
Abstract: 1,221,359. Hydrostatic extrusion die. ALLMANNA SVENSKA ELEKTRISKA A.B. 25 June, 1968 [30 June, 1967], No. 30259/68. Heading B3P. An hydrostatic extrusion apparatus, for making a tape or bar the cross-section of which has at least one part the length of which is greater than the width, comprises a pressure chamber and a die, Fig. 1, forming a part of the internal limiting surface thereof, the inlet of the die being directed towards the interior of the pressure chamber, said die comprising a calibrating channel 1 at its outlet end and a frustoconical channel 3 at its inlet end connected by a chisel-shaped section 2 one end corresponding to the calibrating channel the other to the downstream end of the frusto-conical channel. In Fig. 5 is a view of an end of a billet for use with the die turned through 90 degrees the parts 2<SP>1</SP>, 3<SP>1</SP> corresponding to 2 and 3. The apex angle of the chisel-shaped channel is preferably greater than that of the frusto-conical channel preferred values being 90 and 45 degrees. In another embodiment the die has a crusiform calibrating channel (Fig. 6, not shown).
Patent GB-173651-A (GB)
Title: Improvements in two speed gears
IPC: B62M9/04
Filed: 1920-10-26
Abstract: 173,651. Ducousso, J. M. Oct. 26, 1920. Variable-speed chain gearing.-Relates to twospeed chain gearing suitable for cycles, of the type in which there is a controlled clutch in the high-speed train and a free-wheel clutch in the low-speed train. A driving-shaft 1, Fig. 3, carries a fixed sprocket 2 and a sprocket 3 normally clutched thereto and driving a sprocket 9. A sprocket 4 geared to the sprocket 2 is then overrunning. When the sprocket 3 is declutched, the train 2, 4 transmits a low speed. The hub 10, Fig. 18, of the wheel 3 can turn loosely about a ratchet 11, Fig. 7, secured to the shaft 1. The clutch comprises a pawl 12, Figs. 11 and 12, upon a spindle 12' carried by the hub 10. A lever 15, Fig. 17, on the other end of the pawl spindle 12' is acted on by a spring 18 so as normally to keep the pawl in engagement. To disengage the pawl, a spring lever 16, Fig. 15, is pulled by a wire into the path of the lever 15 as it rotates so as to engage a cam-surface 15<1> and so depress the lever 15. In the event of breakage, the pawl clutch may be superseded by a clutch pin inserted by hand. The intermediate gears 6, 7, Fig. 3, may be omitted.
Patent GB-840934-A (GB)
Title: Improvements in and relating to magnetic latches suitable for refrigerators
IPC: E05C19/16
Filed: 1956-10-04
Abstract: 840,934. Magnetic latches. GENERAL ELECTRIC CO. Oct. 4, 1956 [Oct. 4, 1955], No. 30297/56. Class 44. In a magnetic latch, operated by the attracting force between a magnet and an armature, the armature saturates magnetically before it accepts the maximum external flux which is offered to it by the magnet. As shown, the latch is used to hold closed a refrigerator door 4 and to compress a gasket 6 between the door and the refrigerator cabinet. The latch comprises a permanent magnet 12 and a pair of polepieces 13 mounted on the door and arranged to engage an armature 10 supported on the cabinet. The armature 10 is designed to be saturated magnetically by the magnet in the fully closed position of the door, whereby the force required to open the door is higher than that required to compress the gasket to the required degree but is lower than that which would obtain with a non-saturating armature. In the constructional example, the pull of the magnet is reduced from approximately 15 pounds to approximately 10¢ pounds, the gasket being such as to require 5 to 6 pounds to maintain requisite compression. The armature may comprise a homogeneous body made of a material which under the operating condition, saturates, or it may comprise a non-homogeneous body composed of layers, the inherent magnetic properties of which differ from layer to layer.
Patent GB-202942-A (GB)
IPC: H01T13/46
Filed: 1922-11-07
Abstract: 202,942. Bosch Akt.-Ges., R. Aug. 28, 1922, [Convention date]. Sparking-plugs. - In sparking-plugs of the kind in which the insulator d is held against an abutment f by a sleeve c screwed into the neck of the plug, the insulator d contacts only with the abutment f and with a packing-ring e upon a conical and resilient portion g of the sleeve c.
Patent GB-504636-A (GB)
Title: Improved device for measuring brake power on vehicle wheels and other rotary elements
IPC: G01L5/28
Filed: 1937-11-06
Abstract: 504,636. Testing brakes dynamometrically. NOEL, H. L. Nov. 6, 1937, No. 30448. [Class 106 (ii)] Relates to the type comprising a lever and a pair of jaws by which it can be secured to a vehicle wheel whereby leverage to rotate the wheel against the brake can be applied and yielding means opposing relative movement between the lever and securing means, and consists in providing that the jaws are adjustable to and from each other and are locked in adjusted position. To an H-shaped bracket 13 are pivoted at 7, 7 two claws 1, 2 adapted to embrace the tyre and wheel rim. Several holes 6 allow for adjustment. Arms 3, 4 in one with the claws are secured by pins and slots 8, 9 to the cross piece 12 of the bracket 13, holes 10 allowing for adjustment. Depending from the bracket is a stem 14 to which is pivoted at 15 one end of a long lever 16 provided with a handle 17 at the other end. This lever is also pivoted to the bifurcated end of a link 19 surrounded by a spring 20. In use, the claws are engaged loosely with the tyre and the wheel turned against the influence of the brake. After the initial resistance is overcome the spring 19 is compressed more and more until the wheel is turned. The compressions of the spring as indicated by a small lever 23 the end of which engages a lug 21 on the link 19. In a modification the claws are pivoted together and to the end of a T-bracket, the arms of the claws being connected by a notched link pivoted to one arm and engaging a pin on the other. In a further modification on the lines of that shown in Figs. 1 and 2, the lever is formed as a leaf spring.
Patent GB-226554-A (GB)
Title: Improvements in wire twisting and cutting means in package banding machines
IPC: B65B13/28
Filed: 1923-12-17
Abstract: 226,554. Cary Manufacturing Co., (Assignees of Weeks, C. S.). Sept. 13, 1923, [Convention date]. Wire strainers.- In apparatus for tensioning and securing wires around bales or other packages, the means for cutting off the spare ends of the wire comprise a stud or pin r carried by the gear-wheel () that actuates the slotted twister pinion C, and extending therefrom on both sidesso as to coact with pivoted cutter blades Q, R. The gear-wheel is loose on a shaft B and is actuated by a lever P integral therewith, the studs being positioned thereon so that they do not contact with the cutters until after the completion of the twisting operation. One of the cutters is notched so that the pair of cutters sever the appropriate strands of the wire, which has been tensioned previously by the operation of a lever L and which is held in position by pivoted serrated members G arranged at the opposite sides of the apparatus. The cutters are returned to normal position by the action of springs, not shown.
Patent GB-512296-A (GB)
Title: Improvements in vertical water tube boilers
IPC: F22B13/02
Filed: 1938-10-22
Abstract: 512,296. Furnace walls. GROLL, C. Oct. 22, 1938, Nos. 30603 and 30604. Convention dates, Oct. 23, 1937, and Sept. 17, 1938. [Class 51 (i)] [Also in Group XIII] Combustion gases from a vertical water-tube boiler having the tubes 1 arranged adjacent one another round the combustion chamber with openings 16 between their upper parts are distributed over the water-tubes on their way through an annular space 18 to an outlet 23 under the boiler and on its vertical axis. The tubes extend between an annular lower header 2 surrounding the grate and an upper circular box 3 having a central hot water or steam outlet 26. A lining 15 closes the gaps between the reduced lower ends of the tubes, interstices between their wider portions being filled as by curved steel blades. The boiler casing panels 7 may be hung from a lug 32 set radially and circularly displaced on a jib 27 pivoted about the outlet 26 to provide access to the outer surface or the water-tubes. Tubes of uniform cross-section some of which are curved at their ends or tubes curved at one end only and arranged head to tail may replace the tubes 1. Straight tubes more widely spaced may be utilized, the gaps being filled by angle irons 45 pressed against the tubes by means of stay bolts and bolts 47 and washers 48, 49, keeping their plane wings in alignment. The boiler framework may comprise a lower hoop 51, pillars 52 and a flat ring 53 on which a hoop 54,T iron pillars 55 and a hoop 56 are supported. Hingeddoors filling the spaces between pillars 55 comprise frames carrying narrow vertical refractory bricks with outer metal sheaths and their inner faces forming a continuous surface swept by the combustion gases.
Patent GB-777972-A (GB)
Title: Improvements in link mats
Inventor: HILLSON NOEL
IPC: A47L23/24
Filed: 1954-10-25
Abstract: 777,972. Link mats. TYRE PRODUCTS, Ltd. Oct. 6, 1955 [Oct. 25, 1954], No. 30644/54. Class 142 (4). A link mat of rubber or rubber canvas waste has each relatively rigid link b flanked by two relatively flexible links a. The flexible links stand proud of the rigid links.
Patent GB-1467909-A (GB)
Title: Methods and apparatus for treating siderite ore
IPC: C22B1/00
Filed: 1975-09-03
Abstract: 1467909 Treating siderite ore CLARKE CHAPMAN Ltd 3 Sept 1975 [10 July 1974] 30653/74 Heading C1A [Also in Division F4] A method of producing iron oxides from siderite ore (mainly FeCO 3 ) comprises feeding the ore into a reaction vessel having a pre-heating zone, a reaction zone and a cooling zone, passing cooling air into the cooling zone, allowing a controlled amount of air to pass from the cooling zone through the reaction zone to cause carbon monoxide liberated from the ore to be converted into carbon dioxide, the heat liberated by this reaction being at least the major source of heat for the reactions involved in converting FeCO 3  in the ore into iron oxides, passing the gases in the reaction zone to the pre-heating zone, passing the remaining air from the cooling zone to the pre-heating zone by by-passing at least a major part of the reaction zone, exhausting all gases from the pre-heating zone, and removing the reacted ore from the cooling zone.
Patent GB-1305239-A (GB)
IPC: D05B3/14
Filed: 1970-06-24
Abstract: 1305239 Button delivering apparatus CLUETT PEABODY & CO Inc 24 June 1970 [27 June 1969] 30669/70 Heading A3H A button delivering apparatus has a frame 10, a clamp 13 mounted on the frame, a button feed carriage assembly 17 mounted for reciprocation along the frame, button engaging means 18 located on said assembly, an air piston rod 27 operatively attached to said assembly for moving engaging means 18 towards clamp 13, and means adapted to deliver buttons one at a time to said button engaging means. The apparatus may be used in combination with a sewing machine and is controlled automatically by means of a control circuit of micro-switches, relays and time delay capacitors (Fig. 4 not shown). Buttons are fed one at a time from a vibratory hopper 12 down supply chute 11 wherefrom button feed carriage assembly 17, driven by air cylinder 26, 27 transports one button to clamp 13 located below the sewing head (not shown). The holes in the button are properly oriented by the carriage by means of pinion 21 carrying pins 20. Fig. 3 before delivery to clamp 13. A second air cylinder 34 disengages assembly 17 from the button by tilting the assembly and the assembly returns to a neutral position at the bottom of chute 11 by means of springs. It can then pick up another button to begin the cycle again. Removal of the sewn button from the clamp reenergizes the control circuit and the cycle begins.
Patent GB-1058537-A (GB)
Title: Improvements in or relating to electrical resistors
Inventor: HAY BERNARD FRANCIS
IPC: H01C17/02
Filed: 1965-07-20
Abstract: 1,058,537. Resistors. DALE ELECTRONICS Inc. July 20, 1965, No. 30723/65. Heading H1S. A resistor 10 having terminals 15, 16 is encapsulated in dense plastics material inside a metallic tube 17. The tube 17 may be an aluminium tube provided with cooling ribs 23 and a flat base portion. The plastics material may be phenolic, epoxy or silicone powder or pellets liquefied under heat and pressure and injected into the tube 17 under pressure. Mineral fillers may be used. The resistor unit may be a wire coil in tube 10.
Patent GB-1325603-A (GB)
Title: Gripper shuttle for a loom
IPC: D03J5/00
Filed: 1970-06-24
Abstract: 1325603 Gripper shuttles UNITAKA Ltd 24 June 1970 [24 June 1969 31 March 1970 (2)] 30743/70 Heading DIE A gripper shuttle has a converging slot 3 leading to a pair of relatively pivotable weft gripping arms 4, 5 biassed together by a spring 6 and which are opened to release the yarn by external pressure applied to the other side of the pivot from that on which the spring pressure acts. One arm 4 may be pivoted and one fixed. The arms may be opened by the interaction of portions of the arms with a fixed projection or pusher. Both arms 54, 54', Fig. 5, may be pivotable, and be opened by projections 54b, 54b' of the arms, which are pressed inwards as the shuttle passes through a narrow portion 73 of a tube 71, Fig. 6. Weft 76 is held across the front of tube 72 by a gripper 78 which releases the yarn when a switch 75 detects the passage of the shuttle. A similar tube and switch on the other side of the loom acts to close the gripper 78 and actuate a yarn cutter on the picking side, when it detects the arrival of the shuttle. The arms 4, 5 are positioned between flat plates 1, 2, and one of the arms may be integral with one of the plates. The yarn gripping portions of arms 4, 5 may be roughened or have a material of high coefficient of friction coated thereon.
Patent GB-343478-A (GB)
Title: Improvements in or relating to laces
IPC: A43C9/06
Filed: 1929-10-10
Abstract: 343,478. Laces. SCHWARZE, P., 32, W÷rnbrunnerstrasse, Isarh÷he, Munich', Germany. Oct. 10, 1929, No. 30797. Convention date, Oct. 11, 1928. [Class 43.] To prevent it from slipping through the eyelets when the lace is untied, the end of a lace is releasably secured in a button by being doubled over, as shown, and wedged in the interior. The button may have a plain conical aperture 31, Fig. 4, to accommodate both the tag 5 and the flexible portion 4 of the lace, or the lace may be threaded through two apertures 3, Fig. 2, in the wider end of the button.
Patent GB-908606-A (GB)
Title: Furnace for the treatment of materials
IPC: F27B9/24
Filed: 1960-09-08
Abstract: 908,606. Endless conveyers. HOUILLERES DU BASSIN DU NORD ET DU PAS-DE-CALAIS. Sept. 8, 1960 [Sept. 10, 1959; June 18, 1960], No. 30972/60. Class 78 (1). [Also in Group XII] An endless conveyer in a furnace for the treatment of material, particularly coal briquettes, with hot gases (see Group XII) comprises chains 28a with a lattice 27 formed from wire wound round pins 30 passing through the chain links. Side members 28 overlap in the opposite direction to the travel of the conveyer and are held in place by the pins 30, the ends of which are bent and wound round the preceding pins. The conveyer, which is supported by end roller 3, 3<SP>1</SP>, Fig. 1, and longitudinal members within the furnace, is driven by a series of identical hydraulic jacks 36, Fig. 6, co-operating with thrust bars 29 welded to the underside of the chains 28a. The jacks 36 are mounted on a carriage 33, reciprocated by a main hydraulic jack 35. A jack 38 near the opposite end of the lower run takes up the slack produced by the guide 36. The jack 35 has a cross-section equal to the sum of the cross-sections of the jacks 36, and they are fed with hydraulic fluid from the same source, so that the stress on the conveyer is divided between a number of thrust bars 29, and variations in spacing of the bars 29 is compensated.
Patent GB-844607-A (GB)
Title: Improvements in or relating to drilling machines
IPC: E21B19/08
Filed: 1955-10-31
Abstract: 844,607. Percussive tools. MARSHALL, G. W. Oct. 31, 1956 [Oct. 31, 1955; May 31, 1956], Nos. 31015/55 and 16809/56. Class 124. A drilling machine comprises a boom, a carriage movable along the boom, and connected to a drill unit, a drive motor feeding the carriage along the boom, a fluid-pressure actuated mechanism controlling the thrust exerted on the work by the drill, and means co-operating with the fluid-pressure actuated mechanism to operate the drive mechanism. As shown, a boom 1 carries a screw and nut device 2, 5; the nut being attached to a cylinder 6 having a piston 7 to which is connected a drill unit 9: The cylinder 6 has a valve cylinder 13 containing a valve 14 urged on to its seat by a spring 15 and having a rod 18 extending outside the casing. A finger 19 attached to the piston 16 co-operates with the rod 18 to open the valve 14 and allow pressure fluid to pass to a motor 3, driving the screw 2 to advance the nut and so move the drill unit in the direction of drilling. The drive mechanism may be a rack and pinion or a chain and sprocket and the drill unit may be attached to the cylinder in which case the piston is connected to the drive mechanism. If additional drilling pressure is required, pressure fluid may be supplied to the piston 7 to move it in the direction of drilling. Specification 844,608 is referred to.
Patent GB-1071615-A (GB)
Title: Improvements relating to the development of electrostatic images
IPC: G03G9/097
Filed: 1964-08-04
Abstract: 1,071,615. Electrostatic image developers. DENNISON MANUFACTURING CO. Ltd. Aug. 4, 1964 [July 31, 1963], No. 31155/64. Heading G2H. A method of developing an electrostatic image on a surface consisting of photo-conductive particles suspended in a thermoplastic binder, comprises contacting the image with a toner composition made up of finely divided particles of dye dispersed in a water insoluble crystalline organic material which has a melting range of within 1C. and which lies above 140F., the material when melted being a solvent for the dye and for said binder, the melted material having a viscosity which declines with temperature and which does not exceed 40 centipoises, the material also having a molecular weight not exceeding 350, and fixing the image by heating. The toner particles may be used dry as a dusting powder, with or without triboelectric charge producing particles such as iron filings or glass beads, or the toner may be suspended in a dielectric liquid which is a non-solvent for the toner. On melting, the crystalline material carries the dye into the support, such as paper, for the binder, and the ratio of dye to said material should be at least 1 to 9. In modifications, the dye may be (i) an inherently coloured crystalline polyvalent metal salt of an organic acid which serves as both dye and crystalline solvent material, (ii) a leuco dye base giving a colour when contacted by an electron-donating co-reactant in the photoconductive coating. Crystal violet lactone is such a leuco dye base. Examples of the crystalline material are mterphenyl, diphenyl pthalate and stearic acid which are used with dyes such as Brilliant oil Blue, oil red dye, or ortho and para-toluene sulphonamides. The image-carrying surface may comprise zinc oxide in a high styrene butadiene. For liquid development the toner is made into a concentrate with a tripolymer dispersant such as octadecenyl methacrylate, diethyl aminoethyl methacrylate, and styrene, aluminium tristearate, and paraffin hydrocarbon spirit. This is diluted with further spirit. Examples of dye (i) above are; iron, zinc, or nickel dibutyl dithiocarbamate to which dyes may or may not be dissolved. Examples of a coreactant for use with dye (ii) above are: pthalic anhydride, chlorosulphonated polyethylene. The photo-sensitive surface may be sensitized by a corona discharge and exposed to light through a transparent negative.
Patent GB-772801-A (GB)
Title: Non-dusting powders and the manufacture thereof
Inventor: TODD WILLIAM
IPC: C09B67/00
Filed: 1953-11-11
Abstract: The dust-forming tendency of a finelydivided water - soluble or water - dispersible powder such as oleyl sodium sulphate is reduced by mixing it with an aralkyl alcohol which is soluble in water at 100 DEG  C. to the extent of at least 0.2 per cent, the quantity of aralkyl alcohol being insufficient to prevent the powder flowing freely.  Aralkyl alcohols which may be used are benzyl alcohol, a -phenylethanol, b -phenyl-ethanol, and a -phenyl-isopropanol.  In an example, oleyl sodium sulphate is treated with b -phenylethanol to form a non-dusting powder.ALSO:A dyestuff composition having a reduced dust-forming tendency is prepared by mixing a finely divided water-soluble or water-dispersible dyestuff with an aralkyl alcohol which is at least 0.2 per cent soluble in water at 100 DEG C., insufficient alcohol being added to prevent the powder running freely.  The aralkyl alcohol may be benzyl alcohol, a-phenylethanol, b -phenylethanol or a-phenyl-iso-propanol and may be added in a quantity of 1-5 per cent of the weight of the powder, to which it is applied by spraying, by mixing in a blender, or by addition in a volatile solvent with subsequent evaporation of the solvent. In examples, (1), benzyl alcohol is sprayed on to a powder obtained by drying a mixture of an aqueous paste of the monoazo compound obtained by coupling diazotized p-aminoacetanilide with p-cresol and disodium dinaphthyl methane disulphonate in a powder blender; (2), powder obtained by drying a mixture of an aqueous paste containing 1 : 4 - diaminoanthraquinone and disodium dinaphthylmethane disulphonate with an aqueous solution of the condensation product of m-cresol with formaldehyde and sodium sulphanilate is charged into a powder blender, mixed with common salt and sprayed with benzyl alcohol.ALSO:Water-soluble or water-dispersible powders are rendered non-dusting by treatment with an aralkyl alcohol which is soluble in water at 100 DEG C. to the extent of at least 0.2 per cent by weight, the quantity of alcohol being insufficient to prevent the powder running freely.  In an example, (4), a powder consisting of 99 per cent common salt and 1 per cent dextrin is mixed with benzyl alcohol.