baber/WOPTO huggingface dataset:
Patent GB-636240-A (GB)
Title: Improvements in or relating to a method of regenerating a duplex ion exchanger
IPC: B01J49/00
Filed: 1945-11-05
Abstract: A method of regenerating a duplex ion-exchanger wherein the admixed sets of cation and anion exchange particles are in granules distinct in a physical magnitude such as specific gravity or size comprises physically separating the granules, regenerating each of the sets separately, and re-mixing prior to re-use.  In one example a cation exchange resin having a specific gravity greater than 1.26 is separated from a mixture with an anion-exchange resin of specific gravity less than 1.26 by a sugar solution of specific gravity 1.26 or a little higher warmed to 50 DEG  to 70 DEG  C. to lower its viscosity.  After stirring and settling and removing the lighter resin, in two stages, the sugar solution is drained off, and the heavier resin recovered.  The resins are washed and regenerated with alkali and acid respectively.  In another example, the cation-exchange resin is in granules ranging from 20 to 40 mesh and the anion-exchange resin ranges from 40 mesh to 60 mesh.  Separation may then be effected by a 40 mesh screen.
Patent GB-561310-A (GB)
Title: Self-locking nut and method of making same
IPC: B21K1/70
Filed: 1943-01-07
Abstract: 561,310. Self - locking nuts. COLE IMPROVED STANDARD SAFETY NUT & BOLT CORPORATION. Jan. 7, 1943, No. 332. Convention date, Sept. 2, 1942. [Class Self-locking nuts are produced from standard nut blanks by spreading the metal at the end 5 of the bore and the sides 7 ; tapping the blank, thereby producing shallow threads at the spread end ; and finally compressing the spread side portions 7 to restore the blank to its original form and produce a nut having threads with crests at the same distance from the axis throughout, but those at the end 9 have broader crests and shallower depth. The nuts may be produced in the machine described in Specification 561,309, [Group XXII]. U.S.A. Specifications 1,966,613 and 1,905,621 also are referred to.
Patent GB-620099-A (GB)
Title: An improvement in or relating to variable-speed gearing
IPC: F16D23/08
Filed: 1947-01-04
Abstract: 620,099. Claw clutches. BROWN & SONS (HUDDERSFIELD), Ltd., D., and TAYLOR, A. Jan. 4, 1947, No. 345. [Class 80 (ii)] A baulking ring c having a series of circumferential slots corresponding in number and substantially equal in length to the combined widths of the inter-engagable dogs a<1>, b<1> is provided between the axially movable and axially fixed clutch members a, b respectively in a change speed gear, the radial divisions c<2> between the slots extending towards the axially movable member a and being appropriately chamfered. In operation, when the speed of the member a exceeds that of the member b, the chamfered ends of the dogs a<1> frictionally engage the chamfered ends c<3> of the ring c to move it to the position shown in Fig. 2a. On reversal of relative speeds between the members a, b the ring c is moved to the opposite end of the slot in the member b and engagement' of the dogs a<1>, b<1> is permitted. The specification also describes the use of a double ended axially moving member with two baulking rings.
Patent GB-1186181-A (GB)
Title: Antiviral Factor Obtained from Plant Tissue.
Inventor: SELA ILAN
IPC: A61K35/76
Filed: 1966-01-04
Abstract: 1,186,181. Antiviral substance. YISSUM RESEARCH DEVELOPMENT CO. 3 April, 1967 [4 Jan., 1966], No. 345/66. Headings A5B and A5E. An antiviral material is obtained from virusinfected plants by treating an aqueous extract thereof to remove infective virus (e.g. by adsorption on hydrated calcium phosphate) and ballast materials (e.g. by adsorption on an anion exchange column) and elution with NaCl solution of increasing concentration (0.4 to 0.65 M). The eluate may be desalinated and chromatographed (e.g. on carboxymethyl cellulose) or re-adsorbed on an anion exchange column (e.g. of diethylamino ethyl cellulose) and re-eluted. The pure product is thought to be RNA, while the less pure product is thought to be RNA plus protein. It may be incorporated with conventional carriers into forms for administration to treat plant and animal virus infections.
Patent GB-605765-A (GB)
Title: Improvements in or relating to aerofoil sections for low reynolds numbers
IPC: B64C3/14
Filed: 1946-01-04
Abstract: 605,765. Aerofoils. WALKER, N. K., and ANNENBERG, R. H. W. Jan. 4, 1946, No. 365. [Classes 4 and 114] [Also in Group XXVI] The upper surface of an aerofoil for use at low Reynold's Numbers is so shaped that the maximum ordinate is located between the midchord point and the trailing edge, and the profile does not substantially change in direction from the leading edge to the maximum ordinate and thus defines with respect to the chord-line a protuberance or hump in the rear section, merging gradually into the aerofoil section forward of, and merging sharply into the section aft of, the point of maximum depth, leaving the trailing edge sharp. Fig. 2 shows an R.A.F.32 aerofoil modified by the addition of a hump 7 in the rear portion between 60 and 90 per cent of the chord, giving maximum thickness and ordinate at about 50 and 60 per cent respectively of the chord. This form of section with a shallow cavity 13 towards the trailing edge is intended for the wings and control surfaces of light aircraft, sailplanes, gliders and rotating wing aircraft, but for fan and slow speed propeller blades the undersurface is made flat. The leading edge 15 preferably has a radius equal to 2 per cent of the chord, but in the case of very thin sections with a thickness/chord ratio of less than 6 per cent a radius of at least 4 per cent of the chord may be used to camber the portion immediately aft of the leading edge. Such sections may be used for the blades of axial flow compressors or turbines. In the case of hydrofoils and steering surfaces the section is symmetrical.
Patent GB-1008521-A (GB)
Title: Improvements in or relating to valve means
IPC: G06V10/40
Filed: 1964-01-03
Abstract: 1,008,521. Valves. O. S. GROP. Jan. 3, 1964 [Jan. 9, 1963], No. 395/64. Heading F2V. A valve, preferably for use with a vaporizable medium such as butane or propane, comprises a tube 13, Fig. 1, having an opening 17 in its wall, a plug 18 of elastic material protruding through the opening partially to block the channel, and means 19 to press on the plug and adjust the degree to which the channel is blocked. The plug 18 may be of rubber and the means 19 is threaded into a body 11 and provided with teeth, grooves or a hexagonally-shaped end to facilitate adjustment. In Fig. 2, a lever 29 is loaded by a spring 26 to deform a block of rubber 28 for complete obturation of a channel 22. Downwardly directed finger pressure on a part 29b permits the plug to resume its undeformed condition.
Patent GB-837924-A (GB)
Title: Improvements in and relating to fuel injection pumps
IPC: F02D1/10
Filed: 1958-01-06
Abstract: 837,924. Speed governors. SATZGER, E. Jan. 6, 1958 [Jan. 4, 1957], No. 493/58. Class 57. In a fuel injection pump 1 having pump pistons arranged in V-formation the fuel output is controlled by two regulating rods 4, 5 movable parallel to the pump shaft axis and oppositely to one another and connected one to each arm 12, 13, of a two-armed lever actuated by the sleeve 3 of the pump governor. The regulating- rods 4, 5 are arranged outside their associated row of pump elements and the arms 12, 13 and also a further arm 11 engaging the governor sleeve 3 are secured to a shaft 10 rotatably mounted in bearings 15, 16 on the pump or governor casing so that it centrally intersects the line 14 between the ends of the rods whereby rods 4, 5 are actuated by the sleeve 3 to move through equal distances but in opposite directions. In the embodiment shown in Fig. 4, the two-armed lever 12, 13 is rotatable in bearings 25, 26 and connected to an arm 27 engaging the governor sleeve 3 by means comprising cylinders 28 and 29 slidable in hollow shafts 32 and 33 connected to the lever 12, 13 and arm 27 respectively and having oppositely inclined grooves 30 and 31 engaged by inwardly-extending projections of the shafts 32 and 33. The cylinders 28 and 29 are axially movable by a speed-selecting lever 34 whereby the speed setting may be adjusted.
Patent GB-102164-A (GB)
Title: Improvements in Apparatus or Devices to Control Safe Nightlanding of Aeroplanes.
Inventor: BROCKELBANK CLARENCE HARTREE
IPC: B64F1/20
Filed: 1916-01-13
Abstract: 102,164. Brockelbank, C. H. Jan. 13, 1916. Alighting-indicators.-To indicate to a pilot his height above the ground &c. when approaching an aerodrome at night, lamps are arranged upon horizontal surfaces or surfaces parallel to the ground, carried by a mast at definite heights and mounted so as to be visible at points in the same plane and above but not below, or in the same plane and below but not above. The lamps may be of various colours or arranged in different forms, or differences in both colour and conformation may be employed, and the surfaces may be turned about their supporting-mast so that the lamps indicate the direction of the ground wind. Other lamps mounted in funnels on the upper surface may indicate particulars of the flying- ground. Fig. 2 shows a mast carrying three planes B, C, D having lamps E. c of distinctive colour provided with horizoutal screens F so that those on the plane B are only visible from above, and those on the planes C, D are only visible from below.
Patent GB-121829-A (GB)
Title: Improvements in connection with Mattresses.
Inventor: HILTON JOHN
IPC: A61G7/05
Filed: 1918-01-10
Abstract: 121,829. Hilton, J. Jan. 10, 1918. Mattresses.-A mattress of the kind described in Specification 104,787, having a double layer of springs attached to a central layer of slats, is provided with an opening in the slats to receive a hot-water bottle a which is attached to the slats by a central flange b and has an inlet c and outlet d. A flanged electric heater may be employed instead of the hot-water bottle.
Patent GB-641380-A (GB)
Title: Improvements in or relating to electrical cables particularly adapted for high voltage transmission
IPC: H01B5/10
Filed: 1948-01-08
Abstract: 641,380. Cables. ALUMINUM CO. OF AMERICA. Jan. 8, 1948, Nos. 610 and 611. Convention dates, Jan. 11, 1947, and May 17, 1947. [Class 36] An electric cable suitable for high voltage transmission comprises a central reinforcing core 10, filler material 12 around the core encased within a spirally wound sheath 14 and one or more conductor strands 15 wound upon the sheath. The core 10 is made from stranded galvanized steel wires. The filler material may be applied in loose form in combination with a binder, or may be stranded, and consists of suitably impregnated fibrous material. The sheath 14 may be made from any suitable tough material but is preferably of the same metal as the conductor 15, when it serves as a weather resistant shield for the filler 12 and also reduces induced currents in the magnetic core 10. Additional conductor wires may be included in the filler material to give added strength and electrical contact between the core 10 and conductor 15.
Patent GB-213034-A (GB)
Title: Improvements in or relating to radio-frequency transmission systems
IPC: H03C1/34
Filed: 1923-01-08
Abstract: 213,034. Fleming, A. P. M., Nightingale, S. J., Buckley, J. W., Rankine, A. O., and Metropolitan-Vickers Electrical Co., Ltd. Jan. 8, 1923. Modulating systems.-In order to reduce distortion effects in a radio-frequency transmission system the carrier wave is modulated by audiofrequencies derived from a light-sensitive device. Sound waves are directed against a diaphragm, which controls the intensity of the light rays falling upon the sensitive cell, for example, in the manner described in Specification 124,805. As shown in the Figure, the light-sensitive cell 1 is inserted in series with a battery 2 across the grid and filament of a thermionic amplifier 7 fitted with a grid condenser 5 and high-resistance leak 6. The output from one or more amplifiers such as 7 is applied in known manner to modulators 8 and 9 which control the oscillation amplitudes of a triode generator 10 coupled to a radiating aerial 11 or to a wired wireless system. The inertia of the sound-actuated diaphragm is made as small as possible, and rings or frames of felt are applied to the gratings used in the optical transmission system between the source of light and the cell 1 in order to prevent resonance vibrations. Reference has been directed by the Comptroller to Specifications 157,437, 157,733, 157,744, and 186,305 (as open to inspection under Sect. 91 of the Act).
Patent GB-1202621-A (GB)
Title: A device for measuring the crimping diameter and depth of the closure cap of an aerosol container
IPC: G01B5/08
Filed: 1968-01-04
Abstract: 1,202,621. Clock gauges. SOLFRENE MACCHINE S.p.A. Jan. 4, 1968 [June 24, 1967], No.656/68. Heading G1M. A device for measuring the diameter and depth of the closure cap of an aerosol container includes sensing means such as arms 5, 6 for measuring the diameter and a piston 7 with positioning members 9 and 10 Fig. 1 (not shown) for measuring the depth, both means being coupled to a single clock gauge 1 containing scales for both diameter and depth.
Patent GB-932680-A (GB)
Title: Benzotriazinone and quinazolone carbonate derivatives
IPC: C07C271/08
Filed: 1962-01-08
Abstract: The invention comprises benzotriazinone and quinazolone carbamate derivatives of general formula:- <FORM:0932680/IV(a)/1> wherein R is a hydroxyalkyl radical containing at least two carbon atoms and one or two hydroxy groups (not on the carbon atom adjacent to the carbamate group), X is a halogen atom or a nitro or alkyl group, n is 0 to 2, Z is nitrogen or -CR1- in which R1 is hydrogen or an alkyl group; the acid addition salts of these compounds; and processes for preparing the compounds in which a hydrazine-monocarboxylic acid hydroxy alkyl ester H2N-NH- <FORM:0932680/IV(a)/2> -O-R is reacted (1) with a compound of formula:- <FORM:0932680/IV(a)/3> and the intermediate with a cleaved anhydride ring so obtained then reacted with a carboxylic acid R1COOH or with nitrous acid or (2) with a compound of formula:- <FORM:0932680/IV(a)/4> and the intermediate with a cleaved ring so obtained then closed by prolonged heating.  In the examples: (1) 3-aminobenzo triazinone-N-carboxylic acid hydroxyethyl ester is prepared by the reaction of hydrazinemonocarboxylic acid hydroxyethyl ester with isatoic acid anhydride followed by treatment of the intermediate of formula:- <FORM:0932680/IV(a)/5> with nitrous acid; (2) 3-aminoquinazolone-(4)-N-carboxylic acid acid hydroxyethyl ester is prepared following the procedure of Example (1) but reacting the intermediate with formic acid (the hydroxy group is also esterified but can be freed by hydrolysis); (3) 2-methyl-3-aminoquinazolone- (4)-N-carboxylic acid hydroxyethyl ester is prepared from hydrazine-monocarboxylic acid hydroxyethyl ester and 1,2-dihydro-1-keto-2-oxa-3-methyl-4-azanaphthalene, the intermediate not being isolated; (4) as in (3) but starting with 1,2-dihydro-1-keto-2-oxa-3-methyl-4-aza-7-chloronaphthalene to yield 6-chloro-2-methyl-3-aminoquinazolone- (4)-N-carboxylic acid hydroxyethyl ester; and (5) as in (3) but starting with 1,2-dihydro-1-keto-2-oxa-3-methyl-4-aza-7-nitronaphthalene to yield 6-nitro-2-methyl-3-aminoquinazolone- (4)-N-carboxylic acid hydroxyethyl ester.
Patent GB-783627-A (GB)
Title: Improvements in or relating to methods of preparing chemical compounds containing the pyrrocoline nucleus and new chemical compounds produced thereby
Inventor: BARRETT PAUL ANTHONY
IPC: C07D471/04
Filed: 1955-01-10
Abstract: The invention comprises pyrrocoline derivatives of the general formula <FORM:0783627/IV (a)/1> (wherein R1 and R2 may be the same or different and each represent hydrogen or an alkyl group of 1-6 carbon atoms or jointly form part of a 5, 6 or 7-membered ring fused to the pyrrocoline nucleus, and R3 and R4 represent alkyl groups), and the preparation of pyrrocoline derivatives by reacting acetic anhydride with 3-(2-pyridyl)-1 : 5 - di - tertiary - aminopentan-3-ols. Examples describe the preparation of: (1) 6-acetyl - 10 - dimethylaminomethylcyclohexa(a)-pyrrocoline from 2 : 6 - bis - (dimethylaminomethyl) - 1 - (2 - pyridyl) - cyclohexan - 1 - ol; (2) 6 - acetyl - 11 - dimethylaminomethylcyclohepta (a) pyrrocoline (isolated as its acid oxolate) from 2 : 7 - bis - (dimethylaminomethyl) - 1 - (2-pyridyl)-cycloheptan-1-ol; (3) 3-acetyl-1-(b -dimethylaminoisopropyl) - 2 - methylpyrrocoline from 2 : 4 - bis - (dimethylaminomethyl) - 3 - (2-pyridyl) - pentan - 3 - ol; (4) 1 - (b  - dimethylaminoethyl) - 3 - acetylpyrrocoline (the oxalate of which is described) from 1 : 5-bis-(dimethylamino) - 3 - (2 - pyridyl) - pentan - 3 - ol; (5) 1-(b -dimethylaminoethyl) - 2 - methyl - 3 - acetylpyrrocoline or 1 - (b  - dimethylaminoisopropyl-3-acetylpyrrocoline, or a mixture thereof, from 1 : 5 - bis - (dimethylamino) - 2 - methyl - 3 - (2 - pyridyl) - pentan - 3 - ol.  Reference is also made to the preparation (in inferior yields) of the corresponding propionyl compounds by replacing acetic anhydride by propionic anhydride.  Starting materials.  3 - (2 - Pyridyl) - 1 : 5 - di - tertiary - aminopentan - 3 - ols of the general formula <FORM:0783627/IV (a)/2> are prepared by the action of pyridyl lithium on ditertiary-amino ketones of the general formula <FORM:0783627/IV (a)/3> by a process analogous to that of Specification 689,234.  2 : 6 - Bis - (dimethylaminomethyl)-cyclohexan - 1 - one, 2 : 7 - bis - dimethylaminomethyl)-cycloheptan-1-one and 2 : 4-bis-(dimethylaminomethyl)-pentan-3-one (from which the starting materials of Examples (1) to (3) are prepared) are obtained (initially as dihydrochlorides) by the action of dimethylamine hydrochloride and aqueous formaldehyde at steam-bath temperature on cyclohexanone, cycloheptanone and diethyl ketone respectively.
Patent GB-566851-A (GB)
Title: Servo operation of aircraft control surfaces
IPC: B64C13/00
Filed: 1943-01-14
Abstract: 566,851. Controlling aircraft. ARMSTRONG - WHITWORTH AIRCRAFT, Ltd., SIR W. G., and LLOYD, J. Jan. 14, 1943, No. 702. [Class 4] An aircraft control surface is provided with a servo-tab which can be operated by the pilot at all speeds of the aircraft to initiate the servo-operation of the control surface, further operation of the latter, when required, being effected by fluid pressure or electric power controlled by the pilot's operation of the servo-tab. As shown, a servo-tab 12 at the rear edge of a control surface 11 is moved by a link 14 connected to one end of a lever 15 pivoted about the pivotal axis of the control surface, the other end of the lever being connected by a rod 18 to the pilot's control. A double-acting return spring device 17, of known form, is connected between one end of the lever 15 and a bracket on the control surface, the movements of a spindle passing through the device being transmitted through a flexible push-pull connection 20 to the valve 21 of a fluid-pressure jack 22, the ram 23 of which is connected to a bracket 24 at the front of the control surface. In the normal position of the control surface, the jack is in a dead-centre position, but is brought into action as the control surface is displaced. In a modified device, the arm 15 co-operates with switches for energizing a solenoid which is connected by a link to a crank arm on a shaft coupled by chain gear to the axle of the control surface, the crank arm being normally in the dead-centre position. Alternatively, the solenoid may be replaced by an electro-motor geared to the shaft of the control surface.
Patent GB-671236-A (GB)
Title: Vehicle steering mechanism
IPC: B62D7/16
Filed: 1950-01-11
Abstract: 671,236. Vehicle steering. WEBER, J. L. W. Jan. 11, 1950 [Jan. 13, 1949], No. 749/50. Class 79(v) A vehicle steering mechanism comprises a split track rod, the two inner ends thereof being pivoted to an intermediate member which is movably connected to a steering member, the intermediate member being guided in a fixed path relatively to the chassis so that the paths followed by the inner ends of the track rods are non- circular. The latter paths are curves whose dimension measured transversely of the vehicle is greater than that measured longitudinally. As shown in Figs. 7 and 7a, the rearwardly directed diverging steering arms 5, 6 are connected by track rod portions 17, 18 to a T-shaped intermediate member 31. Member 31 is pivoted at 30 to a steering member 21 rotatable for steering about a fixed point 22, and is guided by roller 32 in guides 33 extending longitudinally of the vehicle. With such a mounting the operative end of the T-shaped member describes a non-circular arc and enables a greater steering lock to be obtained. Figs. 8 and 8a show the arrangement applied to forwardly directed converging steering arms 15, 16 with crossed track rod portions 24, 25. The intermediate member 31 is pivoted as before to a steering member 21 and is guided by roller 32 in a longitudinal guide 33. In a further modification, Fig. 11, the crossed track rod portions 24, 25 are connected to an intermediate member 35 which is slidable on the pivoted steering member 21, and which is constrained by a link 49 pivoted thereto and to a fixed point 50, whereby the member 35 describes a non-circular arcuate path. Alternatively, the member 35 may be slidably mouted on the pivoted steering member 21 and may be guided along the desired non-circular arcuate path by a pair of suitably curved guide rails which engage a projection roller on the member 35.
Patent GB-672239-A (GB)
Title: A new or improved electrical connector
IPC: H01R13/719
Filed: 1949-01-12
Abstract: 672,239. Two-part couplings. MOULTON, E. W., and SHARDLOW ELECTRIC WIRES, Ltd. Feb. 13, 1950 [Jan. 12, 1949], No. 875/49. Class 38 (i). A device for suppressing electricalinterference comprises a box-like housing 10 closed at one end and receiving a platform 11 from the lower face of which project live-pins 13 and an earth pin 14. Said pins pass through apertures in the closed end of the housing and are adapted to co-operate with a wall socket. Two sockets 20 are riveted on the upper face of the platform coaxial with the live-pins but insulated therefrom and surrounded by partcircular walls 19. Also carried by the platform are two condensers C, one connected between a socket and the earth pin, and two chokes I one connected between a live-pin and a socket. The earth pin projects through the platform and has a split sleeve 15 therearound held by a circlip 15a and forming an earth socket. A cover 27 having apertures for the pins of a plug connected to apparatus and adapted to co-operate with the sockets 15, 20, closes.the housing and is secured by a screw 31 passing through a sleeve 10a upstanding from the closed end of the housing, the platform and entering a tapped hole in a boss 29 on the cover.
Patent GB-995300-A (GB)
Title: A cupboard with a shelf rack or racks or the like which can be pulled out
IPC: A47B88/04
Filed: 1963-01-08
Abstract: 995,300. Cabinets, shelves. E. FAHRENBERGER, and R. FAHRENBERGER. Jan. 8, 1963 [Jan. 8, 1962], No. 883/63. Heading A4B. A pull-out shelf rack 2 is supported and guided during withdrawal from storage cabinet 1 by rollers 9, 13 and linkages 3-7 which supports the weight of the rack in the cantilevered withdrawn position. The end positions of roller 9 are determined by stop 10 and depression 11. A further roller is mounted on the front edge of the base of the cabinet 1 to support the front of the rack 2 in the retracted position.
Patent GB-167507-A (GB)
Title: Improved means for heating rooms and the like electrically
IPC: F24H3/04
Filed: 1920-11-09
Abstract: 167,507. Beavan, A. M. E. Nov. 9, 1920. Heating by electricity.-An air heater comprises outer and inner casing b, b<1>, electric heating-units a, and baffles c for causing air to travel in a zigzag path, some of the baffles being arranged adjacent to the heating-units, so as to absorb heat and provide a large heating-surface. The inner casing b', consisting of asbestos lined with sheet iron, is spaced from the outer casing. The heating-units may be of the silica tube type. A fan i draws air downwards. One or more plain or coloured electric lamps may be mounted behind panels in the casings.