baber/WOPTO huggingface dataset:
Patent GB-748124-A (GB)
Title: Improvements in the treatment of alkaline liquors which have been used in the purification of cellulose
Inventor: JOHNSTON DAVID ROBERT
IPC: C08B1/08
Filed: 1952-07-22
Abstract: Aqueous alkaline liquor which has been used in the purification of cellulose of alpha-cellulose content already above 85 per cent, particularly cotton, has its content of dissolved organic matter reduced by heating it under substantially constant volume conditions (such that, at all temperatures below the critical temperature, the greater part remains in the liquid phase as a result of the vapour pressure developed) to a temperature above 300 DEG  C.  The liquor may be heated up to the critical temperature, or even above it, but generally temperatures between about 350 DEG  C. and 375 DEG  C. are preferred.  The process is particularly applicable to liquors containing below about 5 per cent of caustic soda, but may be used in connection with solutions of other alkalies and with solutions of higher alkali concentration, e.g. 25 to 30 per cent or higher.  In the example a 3 per cent caustic soda solution in which cotton linters have been boiled is heated in an autoclave up to 350 DEG  C. during 2.5 hours, held at this temperature for a further 10 minutes, cooled and the resinous solids which have precipitated are allowed to settle.  The liquor is decanted off, fortified with soda ash and recausticized with lime, after which it is used for the purification of further cellulose.ALSO:Aqueous alkaline liquor which has been used in the purification of cellulose of alpha-cellulose content already above 85 per cent, particularly cotton, has its content of dissolved organic matter reduced by heating it under substantially constant volume conditions (such that, at all temperatures below the critical temperature, the greater part remins in the liquid phase as a result of the vapour pressure developed) to a temperature above 300 DEG C. The liquor may be heated up to the critical temperature, or even above it, but generally temperatures between about 350 DEG C. and 370 DEG  to 375C DEG . are preferred.  The process is particularly applicable to liquors containing below about 5 per cent of caustic soda, but may be used in connection with solutions of other alkalies and with solutions of higher alkali concentration, e.g. 25 to 30 per cent or higher.  In the example a 3 per cent caustic soda solution in which cotton linters have been boiled is heated in an autoclave up to 350 DEG C. during 2 hours 30 minutes, held at this temperature for a further 10 minutes, cooled and the resinous solids which have precipitated allowed to settle.  The liquor is decanted off, fortified with soda ask and recausticized with lime.
Patent GB-907949-A (GB)
Title: Improvements in and relating to casting moulds
IPC: B22C9/20
Filed: 1960-05-26
Abstract: 907,949. Moulds. FREDRIKSEN, W. O. May 26, 1960, No. 18684/60. Class 83 (1). In a mould for the simultaneous casting of a number of similar objects such as grinding bodies for ore mills, each layer of the mould is of the same height and the cavities 6 so disposed that each constitutes a mould for one object and also a filling channel or conduit for one or more cavities below.
Patent GB-779801-A (GB)
Title: Improvements in electro-mechanical transducer systems
IPC: G01D5/20
Filed: 1955-06-28
Abstract: 779,801. Electric measuring apparatus. GENERAL ELECTRIC CO. June 28, 1955 [June 28, 1954], No. 18698/55. Class 40 (1). Apparatus for measuring pressure comprises bellows 15 (Fig. 1) attached by a rod 23 to two single-turn coils 37, 38 (Fig. 3) in the gap of a core 35 having an A.C. flux therein produced by a winding 31, the coils 37, 38 being connected in series opposition to give no output under normal conditions, and a signal voltage output when a change in the pressure difference between the inside and outside causes the bellows and rod to displace them relative to the core. The bellows 15 is contained in an airtight cap 9 with the base 17 clamped between the cap and a plate 13, and the outer surface is subjected via a fitting 21 to the test pressure, while the inside of the bellows is open to atmospheric pressure or is evacuated. Movement of the rod 23 and the coils 37, 38 is aided by a cantilever spring 25.
Patent GB-1246219-A (GB)
Title: High pressure filter assembly having an easily detachable bowl cover
IPC: B01D35/30
Filed: 1969-04-11
Abstract: 1,246,219. High pressure filter. PALL CORP. 11 April, 1969 [29 April, 1968], No. 18735/69. Heading BID. A filter for fluid at high pressure (2000 p.s.i.) comprises a pleated, annular filter element 10 enclosed in a housing comprising bowl 2, with inlet and outlet connections 5, 6, closed by a cover 3 which is secured to the bowl by a nut 60, which is rotatable in recess 67 of the cover, wherein it is retained by ring 70, and screws on to threaded end 54 of a pipe assembly 8, integral with the bowl. Thus the cover 3 is fitted and removed from the bowl without relative rotation of cover and bowl, which minimises wear on sealing rings 37, 40, 75. Pipe assembly 8 has filtrate holes 22 and carries a body 32, which is shown as a separate member secured by screw (31) but could be an integral extension of the pipe 7. Body 32 encloses a differential pressure indicator 57, whose state is visible through window 73, and a pressure operated by-pass valve comprising sleeve 33 and seat 52. Filter element 10 is typically stainless steel mesh, but a comprehensive list of alternative materials is given. The housing may be metal or plastics. When the cover is withdrawn, lower spring 20 lifts the filter element from the housing to facilitate subsequent removal.
Patent GB-880558-A (GB)
Title: Improvements in or relating to compound containers and the mixing of the contents thereof
Inventor: HOWARD FREDERICK GORDON
IPC: B65D35/02
Filed: 1958-06-12
Abstract: 880,558. Portable containers; packages. SEALANCO Ltd. Aug. 4, 1959 [June 12, 1958], No. 18749/58. Classes 66 and 94(1). A container 10 for a viscous material 7, e.g. a polysulphide polymer, to be mixed with an activating material 6 before use, has a deformable tube 14 housed therein, the lower end of the tube being opened to discharge the material 6 in the tube into the container 10 when a loop 18 of the tube is pulled. The lower end of the tube is nipped between a flange 16 of the piston-like base 17 of the container and the lower end of the container wall, but may be pulled out therefrom, Fig. 3 (not shown). The upper end of the tube, which projects through a slit 13 in a cap 12, may have a ring attached for pulling instead of being doubled over as shown, or the tube may be closed under the cap 12 and have a tab projecting through the slit 13. The container 10 may be a cartridge of cardboard lined with foil, and the tube 14 of nylon or other plastics material. After withdrawal of the tube 14 the cap 12 may be replaced by a metal cap 24, Fig. 4, which has a guideway for the rod 20 of a mixing device 32. During mixing the container 10 is placed in a metal stand 24, 26. A third cap having an integral nozzle 36, Fig. 5 (not shown), may be applied thereafter, the container being then ready for fitting as a refill cartridge in an extrusion gun by which pressure may be exerted on the base 17 to force the contents out through the nozzle 36.
Patent GB-156820-A (GB)
Title: Improvements in or relating to the manufacture of bricks, clinker, road metal, sand or the like
IPC: F27B17/00
Filed: 1918-11-16
Abstract: 156,820. Atkins, H., and Colquhoun, J. A. Nov. 16, 1918. Making bricks.-Consists in a plant for the manufacture of bricks comprising a furnace or kiln for smelting non- refractory soil such as that found in Mesopotamia, the furnace embodying burners which are supplied with high and low pressure air for atomizing and burning oil fuel. The plant may be carried by rail or road vehicles or by a boat. Fig. 4 shows in plan a railroad vehicle plant for use in conjunction with a stationary brick kiln FK. The bricks, roughly moulded to shape from soil taken from a pit BP are placed in a series of chambers separated by perforated partitions V. A separate chamber S is first fired by burners OB which are constructed as described in Specification 147,240, [Class 75 (i), Burners &c.], so as to receive oil from a vehicle OT, and high and low pressure air from compressors mounted on vehicles HP and LP respectively. After the gases passing through the partition V to the stack C have dried the bricks, the burners are inserted in succession in orifices OB<1>, OB<2>, OB<3>. The bricks are afterwards crushed to form road metal by a mechanical crusher MC. The engines for driving the compressors and crushing plant are provided with fuel and cooling water from the vehicles OT, and WT respectively. Vehicles carrying main and auxiliary furnaces F, SF, may be embodied in the railroad plant as shown in Fig. 1, together with vehicles SQ<1>, SQ<2> serving as quarters for the staff. In this case, the refractory lining of the furnace is raised to a white heat and then charged with the soil in the form of dust, balls, or blocks. The molten soil is run into conduits and allowed to solidify, after which it is crushed to form' road metal, clinker, or sand.
Patent GB-704632-A (GB)
Title: An improved dividing chain saw for stone-working
IPC: B28D1/08
Filed: 1951-08-10
Abstract: 704,632. Sawing stone. BURKHARDT, O. W. Aug. 10, 1951 [Aug. 10, 1950; Nov. 22, 1950], No. 18906/51. Class 124 In a stone-saw comprising single or multiple endless-chain saws of which the tension is adjustable, the non-cutting side of each chain in the region of the cut slides along the bottom of a guide plate which is parallel to the line joining the centres of running pulleys and which can be tensioned by means independent of said pulleys. As shown in Fig. 1, a saw comprises a number of chains each passing over four pulleys 2 which can be moved vertically by spindle drives 6, and tensioned by pulleys 11 and 12 loaded by weights 13. The chains each run along the bottom of a guide plate 17 which is tensioned by means of a wedge 23 inserted between a support 21 abutting on to a transverse beam 10, and the end of a buckle 19 attached to the guide plate. When only two running pulleys are used, as shown in Fig. 6, two guide plates are employed, the upper of which may be forced upwards by wedges 33 to increase the tension of the chains, as shown ; alternatively the two plates may be in contact with each other over an inclined plane and made to slide relatively to each other to tighten the chain ; such a saw may also be used as a bow saw.
Patent GB-259692-A (GB)
Title: Means for utilizing the waste or surplus threads or yarns of textile machines
IPC: D02G3/00
Filed: 1925-07-27
Abstract: 259,692. Thorpe, E. July 27, 1925. Winding or reeling machines; thread guides.- Waste or surplus yarns or threads from lace machines, knitting-machines, looms, or other textile machines are twisted or entwined to form a multi-stranded cord adapted to be interlaced with net or other open fabric, to form an adornment as shown in Fig. 1, or, when cut into suitable lengths, to form a fringe 3 for curtains or other articles. A number of cords may be plaited before being interlaced with the fabric, or a single cord may be interlaced several times in the width of a single mesh of the fabric. The cord is formed by winding the yarns by means of the apparatus shown in Fig. 2, wherein yarns from lace machine bobbins 4 are passed over a felt, rubber, or like friction strip 7, and are given a twist or lay by means of a looped or twisted guide 9 and are wound on a reel 11. The guide is moved by a handle 12 or mechanically to wind the coils side by side,and the reel is collapsable to facilitate the removal of the material. The bundled yarn may be twisted prior to its insertion in the guide.
Patent GB-731169-A (GB)
Title: Semiconductor device for rectifying, amplifying or controlling electric currents
IPC: H01L21/00
Filed: 1952-07-28
Abstract: The semi-conductor material in a transistor or crystal rectifier comprises a composition of Cd and Sb in substantially stoichiometric proportions with or without small amounts of Pb or Ni, which act as impurities producing P-type and N-type conductivity respectively. The proportion of impurity added may be 0.5 or 0.01 per cent.  The material may be prepared by adding Sb to melted Cd in a hydrogen atmosphere, as the temperature is raised.  The melt is then solidified, analyzed and the missing Cd or Sb and desired impurity added.  The whole is then heated in hydrogen, rapidly by high-frequency heating to avoid vaporization, and transferred to a chill mould.
Patent GB-476479-A (GB)
Title: Improvements in tooth brushes
IPC: A46B9/04
Filed: 1936-05-08
Abstract: 476,479. Toothbrushes; hand - tool handles. CHIAVARO, A. May 8, 1936, No. 19144/37. Divided out of and addition to 471,387 under which a Specification was laid open to inspection under Sect. 91 of the Acts, Dec. 1, 1936. [Classes 19 and 61 (i)] A toothbrush of the type described in Specification 471,387 with bristles 23, Fig. 1a, graded off in length towards the end of the handle 1<11> and other bristles 2, Fig. 1b of equal length are now mounted on separate handles 1<11>, 1<1> instead of the same handle as in the prior Specification. The handles are of such resilient material as to prevent any pressure exceeding 50 grammes in weight being exerted upon the crown of the teeth regardless of any force exerted by the user. The handles 1<11>, 1<1> are curved to facilitate cleaning of the teeth.
Patent GB-958624-A (GB)
Title: Improvements in or relating to pressure exchangers
Inventor: BARNES JOHN ANTHONY
IPC: F04F13/00
Filed: 1962-05-17
Abstract: 958,624. Pressure exchangers. POWER JETS (RESEARCH & DEVELOPMENT) Ltd. May 8, 1963 [May 17, 1962], No. 19152/62. Heading FIN. The high pressure outlet port 22 Fig. 1 in an end plate 11 of a pressure exchanger 8 having a self driving cell ring 9 is connected by ducting 24, the hot pass 41 of a heat exchanger 42 traversed by cold fluid in a pass 43 and ducts 46, 23 to the high pressure inlet port 21 of an end plate 12 to which compressed air is fed from lines 1, 2 and an injector nozzle 3 and during starting a portion of high pressure gas is vented from duct 24 through a poppet valve 25 upstream of exchanger 42 thereby attaining a steady intermediate cell speed. As shown the vented high pressure gas is fed through a retractable injector nozzle 19 projecting into the low pressure inlet duct 15 in which is located a plurality of fixed curved guide vanes 17 at the entrance to the inlet port 13 and which serve to impart to the entering air a suitably directed component for driving the cells 10 in the direction of arrow 60; a useful output of cool air issues from a port 14 and a duct 16 within a ventilating duct 35 Fig. 6. The high pressure inlet port 21 is provided with a pivoted blade 47 connected by gearing to a pneumatic piston supplied by air from a bleed pipe 48. The latter also supplies air to a diaphragm 49 which at a predetermined pressure rise in duct 24 serves to close a valve 53 thereby cutting off air supply to a retractable auxiliary nozzle 5 in duct 23. The pressure exchanger 8 is secured to the heat exchanger 42 by clamps 92 and the exchanger 42 is clamped by brackets 93 to the ventilating duct 35.
Patent GB-232840-A (GB)
Title: Improvements in levers operating against constant resistance
IPC: G05G5/16
Filed: 1924-08-14
Abstract: 232,840. Hunt, W. Aug. 14, 1924. Locking levers.-In order to operate and lock in position a pivoted lever B for brakes, lifting- jacks &c., a supplementary lever C is mounted on the same shaft or on a parallel shaft and a cord or cable H attached to the end of the lever B passes through the lever C, or a sleeve attached thereto, so as to be bent through two rightangles and is anchored at E. Movement of the lever C is accompanied by movement of the lever B and the' frictional grip of the taut cable II retains the levers in the adjustable position. More than one lever C may be employed acting on one or separate cables.
Patent GB-143282-A (GB)
Title: Improvements in or relating to gun mountings
IPC: F41A27/08
Filed: 1918-11-23
Abstract: 143,282. Dawson, Sir A. T., and Buckham, Sir G. T. Nov. 23, 1918. Armour-clad vehicle mountings; embrasure joints.-Relates to mountings for machine and other guns on armoured vehicles such as "tanks." According to the invention, the gun A is universally jointed by two non-spherical members in the embrasure in the part-cylindric revolving shield E. The universal joint comprises a ring B in which the gun is secured, as by a bayonet-joint, and the vertical sides of which are cylindrically curved as shown in plan in Fig. 2. The ring B is rotatable about vertical pivots C' carried by an outer ring C, the top and bottom edges of which are curved cylindrically, as shown in Fig. 1. The ring C is mounted on trunnions D' in a support D on the shield E. Slots b, b<1> in the ring B provide respectively for sighting and for the ejection of spent cartridge cases.
Patent GB-461535-A (GB)
Title: An improved process for making stable phosphorus-containing codliver oil emulsions
IPC: A61K47/02
Filed: 1936-07-13
Abstract: Cod-liver oil for use as cattle fodder is emulsified in water by means of alkali metaphosphate, alone or in conjunction with alkali pyrophosphate.  Other emulsifying agents may be added. According to an example an emulsion contains cod-liver oil, tragacanth, gum arabic, sodium metaphosphate, glycerine and water.ALSO:Cod-liver oil emulsions for use as cattle fodder are prepared with the use of alkali metaphosphates, alone or in conjunction with pyrophosphates, as emulsifying agents.  Other emulsifying agents may be added. According to an example, the emulsion contains cod-liver oil, tragacanth, gum arabic, sodium metaphosphates, glycerine and water.
Patent GB-500697-A (GB)
Title: Improvements in or relating to illumination systems for microscopes
IPC: G02B21/06
Filed: 1938-06-30
Abstract: 500,697. Microscopes. ZEISS, C. June 30, 1938, No. 19368. Conventton date, July 13, 1937. [Class 97 (i)] In a microscope for use in Vickers' or Brinell's hardness tests, the illumination system comprises a tube d rl attached coaxially to the objective c and extending approximately to the substance k under test, the tube having two slits f at 90‹ to one another through which light from a source i passes. The source is supported in an inclined housing h on a sleeve g rotatable on the tube d and the axis of the source l bisects the angle between the slits so that each slit is illuminated by light reflected from the walls of the housing h. The inside of the tube d reflects the light on to the object k. Alternatively the axis of the source may pass through one of the slits, or a separate source may be employed for each slit. The slits are covered with translucent glass plates.
Patent GB-1035528-A (GB)
Title: Improvements in and relating to forage harvesters
IPC: A01F29/01
Filed: 1963-05-16
Abstract: 1,035,528. Screw conveyers for harvesters. MASCHINENFABRIK FAHR A.G. May 16, 1963 [May 18, 1962], No. 19482/63. Heading B8A. In a harvester for picking up fallen crops the crops are collected by rotor 50 and delivered on to guide 6 whence they are fed by screw 5 which delivers them centrewards to the harvester. Screw 5 is carried by two brackets 3 pivoted at 2 so that when required the screw 5 may be raised by operation of handle 11 and spring 9 into a position clear of guide 6 for inspection or other purpose. Spring 9 is secured at 8 to frame 1 so that it locks the screw in either of its over-centre positions.
Patent GB-417408-A (GB)
Title: Improvements in gasfilled triode circuits
IPC: H01J17/04
Filed: 1933-07-10
Abstract: 417,408. Amplifying circuits using gas-discharge tubes. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and FARREN, L. I., c/o General Electric Co., Wembley, Middlesex. July 10, 1933, No. 19490. [Class 40 (v).] A gas - discharge tube for receiving impulse signals is provided with a resistance condenser combination C, R<2> and the bias of the grid is below that at which the discharge starts. The receipt of a signal initiates the discharge which is extinguished by the increase in grid bias produced by the anode current in resistance R2. The timelag between the signal and the operation of the load circuit R1 is discussed mathematically in the Specification and appropriate values of components are given to give complete grid control with small signal values. Specifications 373,189, 378,868, and 408,961 are referred to.
Patent GB-760690-A (GB)
Title: Improvements in or relating to sweetening process for petroleum fractions
IPC: C10G19/04
Filed: 1953-07-14
Abstract: Sour petroleum fractions are sweetened by contacting with an aqueous caustic alkali solution of concentration 30 - 60 per cent by weight, containing 10 - 50 per cent of aromatic mercaptans, and solubility enhancing agents which are aliphatic acids having 3 - 7 carbon atoms and alkyl - substituted phenols excluding methyl - substituted phenols.  Agents specified are propionic, normal and iso - butyric, alpha-methyl and alpha - ethyl butyric, caproic, valeric and naphthenic acids, which acids may be substituted with a hydroxy group or halogen atom.  The alkali solution containing aromatic mercaptans may be obtained by treating a catalytically cracked petroleum oil, preferably boiling at 100-430 DEG F., with caustic alkali of for example 3-30 per cent concentration, and concentrating the spent alkali solution which contains mercaptans and phenols.  The petroleum fractions may be prewashed with caustic soda.  The treatment of sour virgin naphtha is described.
Patent GB-588257-A (GB)
Title: Massage table
IPC: A61H1/00
Filed: 1944-10-10
Abstract: 588,257. Massage apparatus. STAUFFER, B. H. Oct. 10, 1944, No. 19501. [Class 81 (ii)] In a massage table provided with an applicator 80 means are provided for adjusting the applicator whereby the oscillations may be imparted thereto in various angular relations with respect to the longitudinal axis of the table. The table consists of a padded top 11 carried by a framework 26, 26a, 28, 30, 32. Detachable side covers 34 are carried by blocks 36 bolted to the side members 30. The top is hinged at 12, the hinged portion 16 being fixable in any desired position by pins 26' passing through a hinged post 18 immediately above and below a pivoted arm 22. Drive is effected by a motor 90' coupled to a pulley 46 carrying a cam 50 on its bearing shaft 44. The cam co-operates with a cam follower consisting of two hardwood blocks 54, 56 held to the cam surface by bolts passing through the blocks. The cam follower is connected to the applicator by an arm 82 formed with ears 86 pivotally mounted on studs 84 carried by a member 70. The latter is formed with a stub shaft 68 journalled in a split bearing 60, and is provided with an 'arm 72 whereby it may be rotated through an arc determined by the abutment of the arm of stops 74, 76. Bearing 60 is carried by a transverse angle iron 62 carried on spacers 64 and braced by straps 66, Fig. 3, and is formed with ears threadedly engaged by the end of a crank 90 whereby the stub shaft 60 may be clamped after adjustment. A time-limit switch 94 is included in the electrical circuit.
Patent GB-147651-A (GB)
Title: Improvements in or relating to securing devices for the pins of brooches, hat-pins, tie-pins and the like
IPC: A44B9/10
Filed: 1920-07-08
Abstract: 147,651. Renault, G. A. June 20, 1919, [Convention date]. Point-protectors and retaining- devices for pins.-Hat, tie, brooch &c. pins are provided with grooves 2, 3 designed to be engaged by a single or double clip 4, mounted on a spring 9 in a case 7 and having notches 13, 14 loosely engaged by projections 11, 12. When a pull comes on the pin, the clip is moved lengthwise and caused to grip the pin more tightly, by means of the action between the surfaces 15, 16 of the clip and the tapered end of the case.