baber/WOPTO huggingface dataset:
Patent GB-597185-A (GB)
Title: Improvements in or relating to thermionic valve circuits
IPC: H03K5/00
Filed: 1945-08-10
Abstract: 597,185. Valve amplifiers. GIRLING, F. E. J. Aug. 10, 1945, No. 20644. [Class 40 (v)] A non-linear amplifier has an undecoupled cathode resistor, and control and auxiliary grids biassed so that positive or negative signals at the control grid always produce a positive output at the anode. The Figure shows operating characteristics of a pentode valve with the suppressor grids maintained at 4.5 volts positive, and with total space current represented by curve Ic. Anode and screen currents, Ia and Is respectively, rise with input voltage Vg1 until the cathode potential Vc exceeds 4.5 volts (level Vg3), when the screen current begins to rise abnormally at the expense of anode current. The control grid is biassed at the peak of the anode current characteristic so that the anode voltage rises for any input voltage regardless of its polarity.
Patent GB-955764-A (GB)
Title: New ethers and process for preparing same
IPC: C07C49/755
Filed: 1962-05-29
Abstract: A composition for treating polyploid plants comprises a compound of the formula <FORM:0955764/C1/1> and/or a compound of the formula <FORM:0955764/C1/2> in which R represents an alkyl group containing at least 2 carbon atoms in admixture or in conjunction with a suitable carrier.  The composition may be in the form of a solution, suspension or emulsion and applied to the plant as a spray, by brushing, as an ointment, or by dipping the plant in a solution thereof.ALSO:The invention comprises compounds having the formulae: <FORM:0955764/C2/1> in which 'R' represents an alkyl radical, pharmaceutical preparations thereof, animal feedstuffs containing said compounds, compositions containing them for treating polyploid plants (see Division C1), and a process for the manufacture thereof wherein D 6-dehydro-des-(acetylamino)-colchiceine is reacted with a diazoalkane and, if desired, any resulting mixture of isomeric ethers is separated.  Said preparations are administered enterally parenterally, or locally in tablets, dragees, ointments, creams or capsules or in liquid form solutions, suspensions or emulsions. In veterinary medicine said compounds may be incorporated in animal fodder.
Patent GB-1126219-A (GB)
Title: Photographic silver halide developers and diffusion transfer processes
Inventor: GREEN MILTON
IPC: G03C8/04
Filed: 1966-05-10
Abstract: 1,126,219. Organic compounds. INTERNATIONAL POLAROID CORP. 10 May, 1966, No. 20694/66. Heading C2C. [Also in Division G2] 2 : 3 : 6 - Trimethyl - 4 - aminophenol (T) (hydrochloride) is made by reducing with sodium hydrosulphite 2 : 3 : 5 - trimethyl - 4 - quinone - 1 - oxime obtained by the reaction of hydroxylamine hydrochloride with 2 : 3 : 5 : trimethyl- 4-quinone prepared by reacting 2:3 :5-trimethyl- 4-aminophenol with 5% HCl (+ SnCl 2 ) and steam-distilling the product from ferric sulphate solution. 2 : 3 : 5-Trimethyl-4-aminophenol is made by the reduction with sodium hydrosulphite of 4-sulphophenylazo-2:3:5-trimethylpbenol; T may also be prepared analagously.
Patent GB-444531-A (GB)
Title: Improvements in or relating to lock nuts
IPC: F16B39/12
Filed: 1935-07-20
Abstract: 444,531. Locking nuts. MANQUILLET, J. H. R., Rue de l'EspÚrance, Hautes - Rivieres, Ardenn e s, France. July 2 0, 1935, No. 20704. Convention date, Nov. 14, 1934. [Class 89 (i)] In means for locking nuts by means of a counternut the abutting surfaces b<1>, c<1> of the nut b and counter nut c are given a helical form with a pitch less than that of the thread of the bolt.
Patent GB-825767-A (GB)
Title: Improvements in or relating to polymeric organic compounds containing phosphorus
Inventor: KENNEDY JOHN
IPC: C08F30/02
Filed: 1954-07-05
Abstract: Di-allyl allyl phosphonate is prepared by refluxing tri-allyl phosphite and allyl bromide in a nitrogen atmosphere, treating the product with aqueous caustic soda, extracting with ether, washing the ether phase with water, removing ether by distillation under reduced pressure, and collecting the fraction distilling at 80 DEG  C. under 2 mm. pressure.  The product may be polymerized (see Group IV(a)). The Provisional Specification comprises the di-allyl alkyl or alkenyl phosphonates generally, made, for example, by heating tri-allyl phosphite with an alkyl or allyl halide, preferably bromide or iodide.  The alkyl halide is preferably used in excess.ALSO:Di-allyl allyl phosphonate is polymerized by heating at 100 DEG  C in the presence of a free radical generating agent, e.g. a peroxide or persulphate, preferably benzoyl peroxide.  A suitable heating time is 3-6 hours and a nitrogen atmosphere is preferred.  The phosphonate containing 1.5% benzoyl peroxide may be heated and the product crushed, washed in the acetone and dried, or a suspension of the phosphonate and peroxide in water may be agitated with heating to give a product in bead form.  The polymer may be hydrolysed with boiling caustic alkali solution to provide ion exchange groups.  In the Provisional Specification reference is made to the use of diallyl alkyl phosphonates and diallyl alkenyl phosphonates generally.
Patent GB-954203-A (GB)
Title: Selective hydrogenation and catalyst therefor
Inventor: ARNOLD MELVIN R
IPC: C07C5/09
Filed: 1960-06-14
Abstract: Highly unsaturated hydrocarbons in a gas containing predominantly olefinic hydrocarbons are selectively hydrogenated by contacting the gas, admixed with sufficient hydrogen to reduce the acetylenes and diolefins to olefins, with a catalyst comprising 0.01-0.09% Pd and 0.01-0.09% Cr. deposited predominantly in the surface of an alumina carrier the surface pores of which have a volume of 0.0-0.4 c.c/g. and a threshold diameter not exceeding 800 <\>rA. The examples describe the selective hydrogenation of methylacetylene and propadiene in a predominantly propylene gas stream.ALSO:Selective hydrogenation catalysts comprise 0,01-0,09 wt per cent Pd and 0,01-0,09 wt. per cent Cr deposited predominantly in the surface of an alumina carrier having a pore volume of surface pores 0,0-0,4 c.c./g., and a threshold diameter of surface pores not exceeding 800 .
Patent GB-152002-A (GB)
Title: Improvements in the manufacture of multi-colour screens for natural colour photography
IPC: G03C7/06
Filed: 1920-07-12
Abstract: 152,002. Faulstich, P. July 12, 1920. Colour photography, screens for.-Multi-colour grain screens are produced by atomizing or spraying a gelatine or colloid base with a dyed solution of celluloid or cellulose which dries rapidly and by immersing the film in an aqueous dyestuff bath to colour the remaining portion of the base. The spraying and immersion may be carried out successively and alternately, or two or more colours may be first sprayed on and the last colour produced by immersion. Long lengths of film band can be treated in this way mechanically. Two detailed processes are described- In the Specification as open to inspection under Sect. 91 (3) (a) other processes are described in which a grain resist is sprayed on to partly protect the film which is coloured by immersion and the colour mordanted. The resist is removed and a second resist sprayed on to partly cover the non. coloured parts, and the process repeated, the last colour being formed by immersion. Alternatively after the first colouring by immersion and mordanting the remainder of the surface may be coloured and a third colour sprayed on which is capable of combining with the colours already formed, giving a four-colour screen. This subjectmatter does not appear in the Specification as accepted. Reference has been directed by the Comptroller to Specification 5377/10.
Patent GB-168483-A (GB)
Title: Improvements in casement windows
IPC: E05D7/08
Filed: 1920-07-12
Abstract: 168,483. Batty, J. July 12, 1920. Pivoting-adjustments for a reversible window mounted on central pivots comprise two holes c in the pivot plate on the sash, a series of holes d in the pivot plate on the sill, and a split pin i adapted to engage the holes. A casement fastener is provided on each side of window.
Patent GB-614579-A (GB)
Title: Improvements in and relating to tools for injecting protective materials into wood
IPC: B27K3/10
Filed: 1946-07-13
Abstract: 614,579. Treating wood with liquids. PETER, M. July 13, 1946, No. 21057. Convention date, Nov. 14, 1942. [Class 140] [Also in Groups I and XXVIII] A tool for injecting liquid into wood consists of a needle 5, which is forcibly driven into the wood to about half its length when contact is made with a piston 10. The latter by further pressure is pushed into a chamber 9 whereby an aperture 2 is closed and liquid from the chamber 9 injected through ducts 7 and 8. The liquid, for example antiseptics, fireproofing, or colouring, is supplied from container 1. The piston 10 is restored to the position shown by the spring 11.
Patent GB-216748-A (GB)
Title: An improved supporting device for coat and the like hangers
IPC: A47G25/06
Filed: 1923-08-20
Abstract: 216,748. Compactom, Ltd., and Pinto, E. H. Aug. 20, 1923. Garment racks and stands. - A support for coat hangers &c. of the kind having an arm B pivoted at one end B<2> to allow horizontal movement guided by an arcuate rail A has an antifriction roller C engaging the rail. The arm B is shown pivoted to the side E, and the rail A secured to the top D, of a wardrobe &c. The outer end of the arm carries a transverse rod B<3>, on which the hangers are placed, provided with a handle B<4> by which the device can be swung out.
Patent GB-649853-A (GB)
Title: High frequency welding apparatus
IPC: B29C65/00
Filed: 1948-08-11
Abstract: 649,853. Seaming non-metallic sheet material. POUND, J. P., PYE, Ltd., and TANKS & LININGS, Ltd. Aug. 11, 1948, No. 21198. [Class 42 (i)] [Also in Groups XI and XXII] High frequency induction welding apparatus comprises a pair of linear electrodes with means for clamping them together about the work, wherein a multiplicity of electrode spacing adjustment means is provided along the length of at least one electrode. For straight welds, e.g. up to 36 inches long, a lower electrode 10 mounted on angle irons 11, 12 of a braced frame 13, 14 is vertically adjustable by lock nuts 52, 53 on screws 50 secured at about 3-inch intervals along its underside. The electrode 10 is locked after adjustment by further nuts 55 on screws 54 engaging slots 56. An upper electrode 23 mounted in insulating blocks 24, 25 has a support 20 braced by tension strips 26 and is counterweighed and pivoted to the frame 14. In use the electrodes 10, 23 are brought together to clamp the work and are secured by a pivoted link 30 with a cam 34 hand-operated to engage a sprung plate 40 pivoted about a fulcrum 41 on the support 20. In a modification for circular welds, e.g. 70 inches long an annular upper electrode (Fig. 3, not shown), is mounted on a hinged support with radial arms, each carrying a sprung plate an approximate gap gauging stop and a fulcrum and is clamped against the fixed electrode by similar links and cams, a locating device (Fig. 6, not shown), comprising a notched arm and a frame-supported triangular projection being provided.
Patent GB-164702-A (GB)
Title: Improvements in resilient tyres for vehicle wheels
IPC: B60C7/16
Filed: 1920-07-14
Abstract: 164,702. Noel, C. June 9, 1920, [Convention date]. Addition to 145,692. Air tubes and chambers; metallic-spring bodies and cores.-In tyres of the type described in the parent Specification, bundles c of animal, vegetable, or other fibres are carried between rings p of wood &c. and rings q of moulded material. The outer ring q bears against a cover a and is embraced by springs s, the ends of which are held to spindles t carrying rollers free to move in guides v formed in a member y. The inner ring q bears against a pneumatic chamber g containing springs h.
Patent GB-335302-A (GB)
Title: Improvements in or relating to gearing for power transmission
IPC: F16H15/56
Filed: 1929-07-11
Abstract: 335,302. Elverson, A. J. H. July 11, 1929. Variable-peed epicyclic gearing. - Epicyclic variable-speed ball or roller friction gearing comprises two or more sets of inner and outer races 6, 6<a> and 5, 5<a>, of which the outer race, for example, is stationary. In the three-speed gear shown, the races 5<a>, 6<a> turn with the driving- shaft 7, while the cage 3, turning with the driven shaft 4, is movable axially to engage either set of balls 1, 2 with its appropriate races. A claw clutch 16 is engaged for direct drive when the epicyclic gearing is in neutral position. In a modificaton, balls &c. of different dameters may be used, the races 5, 6 being of the same diameter, and change of gear may be effected by relative axial movement of the inner and outer races. Two gears such as shown may be used in series, the direct drive on the second gear being however omitted ; a six-speed drive is thus obtained. Springs may be incorporated to ensure resilient contact.
Patent GB-1472828-A (GB)
Title: Paper or cardboard web-making machine comprising apparatus for the smoothness and gloss of the product surface
IPC: D21G1/00
Filed: 1975-05-20
Abstract: 1472828 Smoothing paper VALMET OY 20 May 1975 [23 May 1974] 21397/75 Heading D2A To improve the surface smoothness and gloss of a paper or cardboard web 20, the calender (Fig. 1), drier (Fig. 3-not shown) or press section (Fig. 4-not shown) of a papermaking machine is provided with a smoothing member 32 or 33 mounted on a beam 30 and urged against a roll around which the web passes, the member having a hard microporous surface e.g. of metal or ceramic, such as silicon carbide or aluminium oxide, and extending across the whole width of the web, the linear speed (if any) of the member 32 or 33 being less than that of the web. The member may be a stationary shoe 32 or a rotatable roller 33. In the case of a roller, it is rotated at a lower peripheral speed than the web, the roller being either driven by a D.C. motor 51 and chains 52, 53 as in Fig. 2 or being frictionally driven by the web and retarded by a brake. The beam 30 is pivotally mounted on the machine frame and a fluid piston/cylinder 19 and lever 24 provided to urge the smoothing member against the roll. The member 32 or 33 can be oscillated by hydraulic means 23 (Fig. 2) about the pivot axis 31 and/or reciprocated by hydraulic means 27 (Fig. 5) in an axial direction. Smoothing members 32, 33 can be located to smooth both sides of the web 20, the member treating the topside having a finer microstructure than that treating the wire side.
Patent GB-1280153-A (GB)
Title: Improvements in pillar loops
Inventor: HEMENS JAMES FREDERICK
IPC: B60R22/24
Filed: 1968-05-07
Abstract: 1280153 Pillar loops for safety harnesses TELEFLEX Ltd 14 July 1969 [7 May 1968] 21481/68 Heading A3V A pillar loop for securing the strap of a safety harness to a vehicle pillar comprises a metal integral triangular bracket portion 11 and bail portion 13, the portions defining a slot 15 parallel to a side of portion 11 and having ends 16 which curve in the direction of the apex of portion 11. The loop is adapted to be bolted to the vehicle pillar through a hole 12 in portion 11 and the loop is cranked at 17. The portion 13 is embedded in plastics material 18, and a plastics cover 21 clamps over portion 11.
Patent GB-1263207-A (GB)
Title: A filter insert
IPC: B01D29/00
Filed: 1970-05-05
Abstract: 1,263,207. Filter element. FILTERWERK MANN & HUMMEL G.m.b.H. 5 May, 1970 [6 May, 1969], No. 21563/70. Heading B1D. A pleated paper filter element for filtering oil in the lubrication circuit of an I.C. engine may be of annular or flat form (Figs. 1, 2, not shown) and comprises an upstream coarse paper 6, of porosity 12 to 18 microns, and a fine downstream paper 5, whose basic porosity is 1 to 8 microns but which has a number of perforations 11, whose total area is between 0.005 and 0.05% of that of the paper 5. Except at the fold lines the papers 5, 6 are spaced apart by dimples 7 in the coarse paper, and the folds of each paper are also spaced by corrugations 8, 9 therein. The perforations 11 bypass paper 5 when it becomes clogged so that the life of the element is increased. The perforations are from 0.5 to 2mm in diameter, and Fig. 4 shows two perforations 11 between each pair of fold lines 10, 10a.
Patent GB-479450-A (GB)
Title: Process for the manufacture of fluoro-sulphonic acid
IPC: C01B17/46
Filed: 1936-08-05
Abstract: Fluoro-sulphonic acid is obtained by the reaction of sulphur trioxide with hydrofluoric acid, one of the said reactants being kept by cooling in the liquid state while the other reactant is introduced in the gaseous state below the level of the liquid. According to an example, gaseous hydrogen fluoride is introduced through a chromium steel tube below the level of liquid sulphur trioxide kept in an aluminium vessel at 30--35 DEG  C.
Patent GB-676511-A (GB)
Title: Improvement in and relating to electrolytic devices
IPC: H01M4/00
Filed: 1947-08-07
Abstract: An electrolytic device comprises an electrode consisting of a base having an electrically-conductive, spray-deposited, metal layer thereon which is porous and permeable throughout, the base having been artificially cooled during the spraying process to prevent the formation of a continuous and impervious layer. Cooling may be effected by a current of gas or water directed on to the side of the base not being coated or by a current of gas discharged in a direction parallel to the spray; the spray may also be cooled.  The base may be a metallic sheet, e.g. an aluminium sheet, wire, rod or casting, an open-mesh gauze or an insulating material such as porcelain or glass; the coating metal may be aluminium, in which case the base may be maintained at 500-800 DEG F.  Specifications 413,900, 433,481, 503,370, 515,880, [all in Group XXXVI], and 534,972 are referred to. The Specification as open to inspection under Sect. 91, refers also to the cooling of the spray alone.  This subject-matter does not appear in the Specification as accepted.
Patent GB-239233-A (GB)
Title: Electrical soldering iron with interchangeable copper bit
IPC: B23K3/02
Filed: 1925-08-28
Abstract: 239,233. Percival, S., (Zeva Elektricitõts Akt.-Ges.). Aug. 28, 1925. Soldering-irons.-To prevent the interchangeable bits of electric soldering irons from binding in their heating sleeves due to oxidation, the sleeve or the bit is provided with sharp grooves or recesses so as to receive the oxide when relative movement between the parts is effected and so avoid frequent clearing of the bit. Fig. 1 shows a bit 4 and a heating sleeve 1 grooved at 3, and Fig. 4 shows a grooved bit enclosed in a sleeve.
Patent GB-1220869-A (GB)
Title: Improvements in or relating to two phase systems, for example heating and cooling systems
Inventor: MOLLER WERNER
IPC: H01B3/00
Filed: 1968-05-08
Abstract: 1,220,869. Heat-transmittin. media. MASCHINENFABRIK OERLIKON. 8 May, 1968 [12 May, 1967], No. 21661/68. Heading F4U. [Also in Division H1] Pulverulent aluminium oxide trihydrate fluidized by, or entrained in, a current of carrier gas is used as a heat or cold-transmitting medium. Its grain size is between 5 and 100 microns, preferably 10 microns, and the carrier gas may be air or sulphur hexafluoride. The carrier gas or the entrained material may circulate in a closed circuit which includes a fluidized bed of the material and be used for insulating and cooling electrical transformers The entrained material may be used for quenching arcing in switching devices.
Patent GB-717450-A (GB)
Title: Improvements in change-speed mechanism
IPC: F16H3/08
Filed: 1952-08-29
Abstract: 717,450. Change-speed gear. DIETRICH & CIE. Aug. 29, 1952 [Sept. 1, 1951], No. 21756/52. Class 80 (2) Change-speed gearing comprising three groups of toothed wheels a, b; c, d; e, f, either in constant mesh as shown, or coupled by chains, the groups being interconnected by two pairs of clutches A, B and Rl, D to obtain four speeds, is characterized in that one of the clutches, which operates in first and third speeds, is a freewheel clutch R1 while the other clutch D of the same pair, which operates on second and fourth speeds is non-positive (i.e. friction or magnetic), the clutches B, A of the other pair, which operate in first and second speeds and third and fourth speeds, respectively, being bidirectional and either positive or non-positive. In modifications, (Figs. 3, 9, not shown), trains of gears, shafts and clutches similar to those shown in Fig. 2a are preceded and/or followed by additional groups of gears clutches, &c. to give extra speeds, and the gearing is supplemented by reverse mechanism; many of these arrangements have the controlling clutches mounted externally of the gear box. The clutches A, B, C can be operated directly, by servo motors, by electromagnetic means, or by a fluid such as compressed air.
Patent GB-188773-A (GB)
Title: Improvements relating to float operated valves for boiler feed apparatus
IPC: F22D5/10
Filed: 1921-08-16
Abstract: 188,773. Cowlishaw, Walker, & Co. (1920), Ltd., Lovett, W. H., and Dobbs, A. E. Aug. 16, 1921. Feed-water, supplying and controlling.- The float-operated reciprocating valve a controlling the movement of a balance piston which in turn controls the boiler check valve is mounted within a carrying plug b having inlet and outlet ports registering with the inlet and outlet ports e, f of a containing housing c attached to the float chamber d and from which housing the plug b is adapted to be removed. By unscrewing the cap q from the top of the container, the plug b may be withdrawn. The reciprocation of the valve a, communicated from the float by a rocking lever h and a pivoted link g, controls communication of fluid between the inlet and outlet ports e, f by the position of a portion of it reduced in diameter at a', or alternatively by one or more ports through the valve member. Longitudinal balance of the valve is obtained by a passage j leading from the underside of the plug to the space at the top of the valve a. Specifications 16097/02 and 185,453 are referred to.
Patent GB-762149-A (GB)
Title: Anthraquinone vat dyestuffs and process for making them
IPC: C09B1/43
Filed: 1954-07-26
Abstract: The invention comprises vat dyes containing an acyl residue derived from a dicarboxylic acid containing at least one oxdiazole residue, and in which the -CO - groups of the acyl residue are attached to the nitrogen atoms of aminoanthraquinone residues.  They are made by condensing two mols of an aminoanthraquinone or one mol each of two different aminoanthraquinones with one mol of a reactive derivative of a dicarboxylic acid as above.  Any free amino groups in the products may be acylated with monocarboxylic acids.  The products may be used as such or as leuco-ester salts for dyeing or printing wool, silk, cotton, linen, artificial silk, regenerated cellulose, and nylon.  Examples describe the condensation of 1 - aminoanthraquinone, 1 - amino-4 - or 5 - benzoylaminoanthraquinone - 1 - amino - 4 - methoxy-anthraquinone, and 1 - amino - 5 - (21 - fluorobenzoylamino) - anthraquinone with the dichlorides of acids of the following formula:- <FORM:0762149/IV(b)/1> <FORM:0762149/IV(b)/2> <FORM:0762149/IV(b)/3> <FORM:0762149/IV(b)/4> which substances are prepared according to Specification 746,047 [Group IV(b)]