baber/WOPTO huggingface dataset:
Patent GB-1120402-A (GB)
Title: Method for drying ion exchange resins
Inventor: CRABB CLARENCE ROBERT
IPC: B01J49/50
Filed: 1966-06-23
Abstract: An ion exchange resin is dried by adding to the water-laden resin sufficient of a halogenated hydrocarbon to form an azeotrope with the water and then distilling off at a temperature at or above the azeotrope boiling point the azeotrope into a heated atmosphere.  The ion exchange resin may be a sulphonated styrenedivinyl benzene copolymer which may be neutralized with an alkali metal hydroxide or carbonate.  The halogenated hydrocarbon may be trichloroethylene, perchloroethylene; 1,1,1-or 1,1,2-trichloroethane; 1,1,1,2- or 1,1,2,2-tetrachloroethane; carbon tetrachloride; ethylene or propylene dichloride; chloroform and/or 1,2,3-trichloropropane.
Patent GB-978718-A (GB)
Title: Improvements in and relating to a device for indicating the passage of a train
IPC: B61L29/28
Filed: 1962-07-23
Abstract: 978,718. Train passage indicators. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. (Philips Gloeilampenfabrieken N.V.). July 23, 1962, No. 28242/62. Heading B7N. The arrangement for producing an indication when a train passes a location in a particular direction comprises a pair of oscillators G 1 , G 2  positioned a short distance apart and adjacent a rail of track RC and constructed such that their respective outputs disappear when they are influenced by the presence of a train wheel, a train passage indicator ND normally energized from the output of oscillator G 1  and an amplifier and rectifier unit VD, a monostable circuit M and a normally de-energized auxiliary oscillator OS connected in series between oscillator G 2  and the indicator ND. When a train moves in direction D 1  its leading wheel first influences oscillator G 1  and on disappearance of its output a train passage signal is produced by indicator ND. When a train passes in the opposite direction the signal from oscillator G 2  disappears on passage of each wheel and for the duration of each disappearance a condenser in circuit M charges. On reappearance of the signal the condenser discharges and switches the monostable circuit to its second unstable state for the duration of the discharge during which time auxiliary oscillator OS is energized to supply a signal, superimposed on that provided by oscillator G 1 , to the indicator ND. During this period the wheel passes oscillator G 1  but the disappearance of its signal is not recorded because of the presence of the signal from the auxiliary oscillator. Since the duration of the charge time of the condenser-and hence its discharge time-is controlled by train speed, the arrangement is operable with fast or slow trains. Fig. 3 (not shown) indicates an arrangement with fail-safe characteristics.
Patent GB-1402348-A (GB)
Title: Reciprocating apparatus
IPC: B05B13/04
Filed: 1973-06-14
Abstract: 1402348 Coating apparatus SECMER SA 14 June 1973 28273/73 Heading B2L A carriage 3 carrying a paint gun 9 or other tool is propelled to and fro on a horizontal beam 1 by impulses imparted to the carriage at each end of the beam by pneumatic rams 33. A workpiece 10 is movable on a second carriage 11 transversely of the beam 1. In use, of the carriage at the end of a traverse (Fig 3) a resiliently mounted rod 29 contacts and actuates a distributor valve spool 41 to supply air to the corresponding ram 33 to displace the piston rod 37 outwards as it is contacted by a pin 19 of the carriage to reverse the carriage. A shock absorbing spring 26 is mounted between shoulders 20, 23 of the two co-axial slidable fins 19, 22 of the carriage, and the adjecent ends of the cylinders of the rams 33 are interconnected by a line 38 so that as one piston rod 37 is extended the other is retracted. To start the carriage 3 a blind bore parallel to the beam 1 in a boss 43 of the carriage is supplied with air to move the carriage by reaction to one end of the beam.
Patent GB-712772-A (GB)
Title: Improvements in or relating to perambulators
IPC: B62B9/26
Filed: 1951-12-03
Abstract: 712,772. Luggage carriers. ATKIN, D. Sept: 24, 1952 [Dec. 3, 1951; Sept. 24, 1952], Nos. 28289/51 and 23979/52. Class 18 [Also in Group XXXII] A luggage carrier 1 for use with a perambulator (see Group XXXII) has wire mesh sides secured to a wire framework and is provided with side flanges 9 for engaging in slotted rails secured to the wheel axles of the perambulator. The Carrier has a hinged flap 6 which can be held in the closed position by a catch 24, but is opened by spring means 8 when released from the catch. In. a modification, the flanges 9 are replaced by two pairs of rollers or the like mounted on two transverse spindles secured to the base of the carrier.
Patent GB-1127576-A (GB)
Title: Improvements in or relating to apparatus for filtering liquids
Inventor: FREELAND WILLIAM
IPC: B01D29/00
Filed: 1966-06-24
Abstract: 1,127,576. Magnetic separators. M. E. L. EQUIPMENT CO. Ltd. 6 April, 1967 [24 June, 1966], No. 28297/66. Heading B2J. A filtering apparatus to trap ferrous particles in liquids comprises a casing 1 with a rotatable apertured partition 6, between an inlet 2 and outlet 4. Filter units are mounted over each aperture. A plate 28 is removed to give access to a filter unit which may be removed, by a handle 26, and cleaned. Hand or powered rotation of the partition 6, which is mounted on rollers 7, gives access to successive filter units. As described, magnetic filter units each comprise a cage of coaxial concentric soft-iron rings mounted in a non-magnetic sleeve 15, and surrounding one or more annular permanent magnets (not shown) and held between spider-shaped pole pieces 17, 18. Filter units 12, 13 are associated with an inner and an outer row of apertures in the partition 6.
Patent GB-765095-A (GB)
Title: Improvements in or relating to spectacle frames
IPC: G02C11/02
Filed: 1953-11-14
Abstract: 765,095. Spectacle frames. UNGER, S, Feb. 14, 1955 [Nov. 14, 1953], No. 28330/53, Class 97(1) The side arms 12, 13 are sinuously curved in a vertical plane from the front 11 to the ear so that any bending of the arms which may be necessary to adjust the frame about a horizontal axis will not be noticeable. One or both of the side arms may carry an ornamental device 14. U.S.A. Specification 2,041,283 is referred to. -
Patent GB-1249159-A (GB)
Title: Improvements in filters
Inventor: BROADBENT ARNOLD
IPC: F24F8/108
Filed: 1968-06-04
Abstract: 1,249,159. Rotary drum air filter. PARKSCRAMER (GREAT BRITAIN) Ltd. 20 May, 1969 [4 June, 1968; 14 June, 1968], Nos. 26542/68 and 28414/68. Heading BIT. Air loaded with dust and fibres is drawn by fan 52 from textile machinery and delivered tangentially into casing 15 enclosing an inward-flow filter drum 33 which is intermittently rotated anti-clockwise to'expose a clean section of drum in response to the pressure drop across the drum being increased by build up of fibres F -thereon. Rollers 70, 71 strip the fibres from the lower part of the drum, and a substantial proportion of the air flows inwards through the clean section to the right of sealing strip 103. The finer material tends to deposit on the mat of fibres F higher up the drum, which thus acts as a 'filter aid'. Roller 71 is spring-biassed towards the drum and towards roller 70 (Figs. 1, 9, not shown), and rollers 70, 71 are geared together and driven by the drive motor (60) of the drum. Pressure switch (110), whose diaphragm bridges a hole in casing 15, is connected to an integrating circuit (Fig. 11, not shown) which prevents spurious vibration of the diaphragm or brief pressure surges from switching on motor (60). A similar switch (110a) and circuit shuts off the motor of fan 52 if the pressure rises very high because the drum has failed to move, and the resulting pressure fall opens switch (110) to cut the current to motor (60). The drum 33 has a surface of wire mesh supported on expanded metal covering an array of spoked wheels. One end is closed and the other open to allow flow of filtered air, and Figs. 4, 5 (not shown) illustrate the sliding seals at the two ends. Fig. 1 illustrates the mat of fibres F being fed by rollers 70, 71 into truck 31. The end seals of the drum and sealing strips (100, 101), 103 engaging the rollers and drum (Fig. 6, not shown) are fire-resistant, P.T.F.E.- impregnated asbestos.
Patent GB-695892-A (GB)
Title: Improvements in or relating to undercarriages for aircraft
Inventor: CONWAY HUGH GRAHAM
IPC: B64C25/08
Filed: 1950-11-21
Abstract: 695,892. Aircraft undercarriages. BRITISH MESSIER, Ltd. Sept. 5, 1951. [Nov. 21, 1950] No. 28469/50. Class 4. [Also in Group XXXIV] An aircraft undercarriage having a normal ground engaging wheel or the like is provided with an auxiliary ground wheel with a low pressure pneumatic tyre, means to fit it to the undercarriage alongside the normal ground engaging member so that it projects below said normal ground engaging member sufficiently to enable it to bear its due proportion of the load when on the ground, and means to release the auxiliary wheel and allow it to fall off the aircraft when in flight. The undercarriage leg 10 has a stub axle 11 which carries a permanent landing wheel 12 having a high pressure tyre 13. The wheel 12 has an annular flange 20 attached thereto which forms a spigot mounting for a further annular flange 21 secured to the hub 15 of an auxiliary low pressure wheel 16. A ring 23 is secured within the flange 20 and is formed with a plurality of spring fingers 24 formed at their free ends with enlarged bevelled heads 25, which, by virtue of the resilience of the fingers 24 may be sprung into and out of engagement with an inwardly projecting rim forming the outer wall of an annular recess 26 in the flange 21. The heads 25 are held in engagement with the co-operating rim by a locking bolt comprising a diaphragm 29 formed with a rim 32 having a flange 28. The rim 32 is capable of axial sliding movement within the flange 21 and is acted upon by springs 31 so that the flange 28 engages the inner faces of the fingers 24 to prevent inward movement thereof. The diaphragm 29 carries a central projection which is in contact with the end of the piston rod 35 of a piston 34 which slides within a cylinder formed in the axle 11 and is urged against the action of a spring 36 by pressure fluid admitted at 38. Initial movement of the piston and the locking bolt frees the fingers 24 and further movement brings the end 33 of the rim 32 into contact with a face 40 of the hub 15 thus separating the spigot connection 20, 21 and releasing the auxiliary wheel from the aircraft. Alternative embodiments are described in which the auxiliary wheel is mounted on the side of the leg opposite to the main wheel, Fig. 1 (not shown), or divided bogies may be releasibly secured on either side of the main landing wheel, Fig. 4, 5 (not shown).
Patent GB-721260-A (GB)
Title: Improvements in or relating to a process for hydrogenating reducible sugars
Inventor: KASEHAGEN LEO
IPC: C07C31/26
Filed: 1952-11-12
Abstract: In a process for continuously hydrogenating a reducible sugar to a polyhydric alcohol by continuously feeding into the lower end of a vertical reactor a suspension of finely-divided hydrogenation catalyst in a solution of the sugar, maintaining the reactor at hydrogenating temperature, continuously feeding hydrogen under pressure into the lower end of the reactor, maintaining a selected pressure in the reactor, and continuously removing the reaction mixture from the upper end of the reactor, the rate of hydrogen feed is at least equal to the critical hydrogen rate, expressed in terms of linear feet of hydrogen flow per hour in the reactor at reactor temperature and pressure, required by the equation critical hydrogen rate = 76.5 + 0.13H where H is the rate of hydrogen usage in cubic feet per hour per square foot of reactor cross-sectional area, hydrogen volume being expressed in terms of one atmosphere pressure and 0 DEG  C. Hydrogenation may be effected in a series of reactors and conditions are so arranged that hydrogenation to the maximum extent possible is achieved in the first reactor.  The "critical hydrogen rate" is the lowest rate of hydrogen feed which will give the greatest extent of hydrogenation possible under the existing conditions.  The rate adopted should be somewhat higher than the critical rate to ensure maximum hydrogenation.  In examples: (1) and (2) sorbitol is obtained from glucose; (3) sorbitol and mannitol from inverted sucrose; and (4) lactositol from lactose by hydrogenation in the presence of a supported reduced nickel catalyst at temperatures of about 150-165 DEG  C. and pressures of 1000-2000 p.s.i.g., an equation being given for the calculation of the rate of hydrogen usage.
Patent GB-1359038-A (GB)
Title: Copolymers
Inventor: CAMPBELL JOHN B
IPC: C08F36/00
Filed: 1971-06-17
Abstract: 1359038 Sulphur-curable elastomeric tetrapolymers; rubber compositions E I DU PONT DE NEMOURS & CO 17 June 1971 28567/71 Addition to 1195625 Headings C3P and C3Q [Also in Division C5] A sulphur-curable elastomer comprises an amorphous polymer comprising (a) 25-75% by wt. of ethylene units; (b) units derived from a C 23 -C 110  hydrocarbon monomer containing two polymerizable double bonds (i.e. terminal double bonds or double bonds in a strained alicyclic ring system), the amount of this monomer used in the preparation of the polymer being 0À01-0À5 moles per kg. of polymer and the units thus introduced not exceeding 15% by wt. of the polymer; (c) sufficient units derived from a nonconjugated diolefin containing only one readily polymerizable double bond to provide 0À1-4À0 moles of units per kg. of polymer; and (d) propylene units. The polymers have a saturated chain with pendant double bonds in the units (c) and branching points produced by the units (b). They are prepared by means of an organic solvent-soluble co-ordination catalyst. An example describes the continuous copolymerization of ethylene, propylene, 1,4-hexadiene and a polybutadiene having two terminal allyl groups using a VOCl 3 /Et 3 Al/Et 2 AlCl/C 6 H 5 CCl 3  catalyst. The polymers may be compounded with chain-unsaturated elastomers, e.g. natural rubber and/or neoprene, and cured by conventional means.
Patent GB-297992-A (GB)
Title: Improvements in cards and the like for classificatory systems
IPC: G06K19/063
Filed: 1927-10-27
Abstract: 297,992. Perkins, A. Oct. 27, 1927. Sorting cards, manually. -A card for classification purposes has a row of holes b near to the edge and other holes c farther in and staggered with respect thereto. The holes are grouped by printed lines a and there are four holes in each field such as Band C, each hole having its value printed against it so that by slotting out one or more of the four holes, singly or collectively, the digits 1 - - 9 are represented.
Patent GB-637411-A (GB)
Title: Tear tape
IPC: B65D75/68
Filed: 1947-10-28
Abstract: 637,411. Package tear-tapes. WING- FOOT CORPORATION. Oct. 28, 1947, No. 28733. Convention date, March 28. [Class 94(i)] A tear tape is composed of an elongated ply of a plastic of a class of plastics suited for use as film wrapping materials, united to a ply of a plastic, of a greater tensile strength than the plastic. As applied to packaging a box of cigarettes (Fig. 6), the tear tape 6 (shown in cross section in Fig. 1), comprises a ply a of regenerated cellulose united by a suitable adhesive (not shown), to a ply b of rubber hydrochloride. The tape 6 is heat-sealed to the inner face of a rubber hydrochloride wrapper 1, so that when the box is wrapped, the outer surface of the regenerated cellulose ply a lies against the surface of the box. In order that the ply a (which is non-heat sealable), may be secured to the inner edge 4 of the wrapper seam 4, 5, either the ply a or the wrapper is provided with a spot of wax 7, preferably before the wrapping operation. The outer edge 5 may be nicked at 9, 9, to initiate a tear. An exposed end of the tape may form a tear tab 8 which may be united by wax to the wrapper but is preferably left free. In a second form of tape (Fig. 2, not shown) the outer edges of the tape of Fig. 1 are turned inwards and secured by adhesive to 'the outer face of the ply a leaving a central exposed surface of regenerated cellulose. Instead of adhesive the surfaces may be coated with nitro-cellulose and then heat-sealed. In a third form (Fig. 3, not shown) each half of the tape of Fig. 1 is folded about a central longitudinal axis so that the outer surfaces of the ply a are brought together and secured as before. In a fourth form (Fig. 4, not shown) the tape has a single ply of regenerated cellulose sandwiched between outer plies of rubber hydrochloride. The ply a may alternatively be of paper, cloth, scrim, thread &c., while the ply b may alternatively be of polyethylene or copolymer of vinylchloride and vinylidene chloride, but is of the same plastic material as that of the wrapper. The thickness of the wrapper, which is preferably unplasticized, may vary between .0007 in. and .0025 in. The thickness of the ply a when of regenerated cellulose may vary between .001 in. to .002 in. and in a preferred form is .0015 in., the ply b of rubber hydrochloride then being .001 in. Regenerated cellulose, when used, may be coated on one or both sides with a moisture-proof lacquer. Rubber hydrochloride when used may be of different composition and gauge for the wrapper and tape and the proportions of stabilizer, and plasticizer and the quantities of pigment may be different.
Patent GB-1502775-A (GB)
Title: Removal of arsenic from aqueous effluents
IPC: C02F1/52
Filed: 1975-06-30
Abstract: 1502775 Precipitation of arsenic from acidic effluents BORAX CONSOLIDATED Ltd (BRITISH CO) 30 June 1975 [28 June 1974] 28770/74 Heading C1C A process for the removal of arsenic from acidic aqueous solutions comprises (a) treating with an arsenic precipitant and removing the arsenic precipitated, and (b) treating the aqueous liquor obtained with a ferric iron salt in solution or with a ferrous iron salt and an oxidizing agent, to complete the precipitation of the arsenic. The acidic effluents may be those produced in the gaswashing circuits of sulphuric acid plants which are associated with copper smelters. The precipitant may be lime, and the iron salts may be ferric chloride or ferrous sulphate, and the oxidizing agent may be chlorine, hypochlorite, permanganate or peroxide. Waste liquors containing less than 0À25 p.p.m. of soluble arsenic are obtained.
Patent GB-202881-A (GB)
Title: Improvements in or relating to electric switches
IPC: H01H13/60
Filed: 1922-10-24
Abstract: 202,881. Hoover Suction Sweeper Co., Ltd., (Hoover Suction Sweeper Co.). Oct. 24, 1922. Switches, quick-action; covers. - A quick-action switch comprises actuating mechanism such as a plunger or push button connected to a self-centring mechanism which cooperates with the snapaction. The. shap-action and actuating mechanism are so mounted on the base as to be detachable therefrom as a unit. The snap-action mechanism is supported in a frame 15 having two shafts 24, 31 about which a cam 25 and the movable contact member. 32, which insulatingly carries the contact proper 36, are respectively pivoted. A guide member 41, pivotally mounted on the cam at 39 and having a sliding connection with the free end of the contact 32, carries a compression spring 42 through which the movement of the cam is transmitted to the contact. The selfcentring mechanism shown in Figs. 2 and 3 comprises an extension 54 of the contact spring 50 of the plunger 49, the extension engaging shoulders 29 on the cam. That shown in Fig. 4 comprises a pivoted bar 73 having a slot through which pass leaf springs 77. Screws 17 secure to the base the support 15, plunger guide 45 and abutment 43 of the spring 50. An insulating lining 12 is provided for the cover.
Patent GB-1131673-A (GB)
Title: Improvements relating to electric batteries
IPC: H01M6/34
Filed: 1967-06-22
Abstract: 1,131,673. Moulding battery separators. ESB Inc. 22 June, 1967 [26 July, 1966], No. 28934/67. Heading B5A. [Also in Division H1] An electrode separator assembly is made by placing an electrode 11 with perforations 14 in a mould having cavities aligned with and of greater diameter than perforations 14, covering the electrode with a plastic sheet e.g. of polyethylene, closing the mould and heating it to 400 F. to soften but not melt the polyethylene, applying a pressure of 500 p.s.i., water-cooling the mould and removing the assembly. Additional parts e.g. integral frame, electrolyte guides and hinge between two assemblies (Fig. 4, not shown) may also be moulded from the polyethylene at the same time.
Patent GB-923271-A (GB)
Title: Improvements in vehicles
Inventor: BILLS HENRY
IPC: B60P3/22
Filed: 1958-09-10
Abstract: 923,271. Tipping vehicles. BONALLACK & SONS Ltd. Dec. 8, 1959 [Sept. 10, 1958], No. 29016/58. Class 108(1). The body 8 of a motor vehicle is removably mounted on a tipping sub-frame 6 hinged at 7 to the vehicle chassis 5. The feet 15 on the body 8 enter corresponding recesses in the sub-frame 6 and are retained therein by pins 16. The feet are preferably of truncated conical form but with the generatrix facing the rear of the vehicle vertical.
Patent GB-171981-A (GB)
Title: Improved process for dyeing animal or mixed fibres
IPC: D06M15/055
Filed: 1921-11-01
Abstract: In dyeing wool, half-wool, silk or other animal fibre with dyestuffs which tend to settle from an acid solution, waste sulphite cellulose liquor, or the active substances contained therein (such as sodium lignine sulphonate, cell pitch, sugars) is added to the dye-bath to prevent such settling.  The addition further permits the use in the same bath of dyestuffs of different character, for example, substantive and acid dyestuffs.  Examples are given of dyebaths for wool containing Alkali Blue 4B, sodium sulphate, waste sulphite cellulose liquor and sulphuric acid; Zambesi Black D, sodium sulphate, waste sulphite cellulose liquor, and acetic acid; Metachrome Brown B, potassium chromate, ammonium sulphate, waste sulphite cellulose liquor, and acetic acid.
Patent GB-678423-A (GB)
Title: Solder for aluminium and its alloys
IPC: B23K35/26
Filed: 1948-04-07
Abstract: An alloy solder, for use with aluminium and its alloys, has the following composition: Sn 3-20 per cent, Sb 0.25-5 per cent, Ca not exceeding 0.5 per cent, Pb the balance.
Patent GB-474699-A (GB)
Title: Improvements in and relating to lubricating systems
IPC: F16N7/40
Filed: 1936-10-26
Abstract: 474,699. Electric motors. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 26, 1936, No. 29055. Convention date, Oct. 24, 1935. [Class 35] [Also in Groups XXVI and XIII] Casings ; cooling; lubrication.-In a refrigerator plant an electric motor 16 drives a reciprocating compressor 27 for the refrigerant, and a rotary pump 35 for supplying cooling and lubricating oil from a sump 43. A portion of the oil passes up helical passages 68, 73, to the shaft bearings. Oil delivered by the pump, after being cooled in an external chamber, is discharged through nozzles 66, 67, over the surfaces of the compressor and the motor, and passes through the motor windings to a reservoir 89. Plates 85, 86 shield the air gap from the oil.
Patent GB-374747-A (GB)
Title: Water trap for compressed air and steam
IPC: F22B37/26
Filed: 1931-10-20
Abstract: 374,747. Steam traps. GRAESER, P., 31, Schimmelstrasse, Kaufmann, Brackel, Dortmund, Germany. Oct. 20, 1931, No. 29107. [Class 64 (ii).] A steam trap comprises a U bend 1, a water trap 18, and an adjustable screwed valve cone 7 in a sleeve 4 with perforations 9 through which water enters a glass or metal cylinder 10 in which its level can be observed. An outlet 5 is provided in a cap 6 of the sleeve 4. Compressed air and steam enter a T or doubly curved tube 20, air passing on at 21, and condensation entering the water trap 18 with a tube 15 perforated near the top at 16. When pressure is exerted from the pipe 5 or falls internally, water passes through a valve 13 in the bottom of the U bend 1, which may contain balls or pebbles 22. An air hole 12 in the top part of the cylinder 4 allows air to enter the cylinder 10 when pressure falls. A ball valve may replace the conical valve 7. Water may be drawn off at 17.