baber/WOPTO huggingface dataset:
Patent GB-571858-A (GB)
Title: Improvements in or relating to variable inductances
IPC: H01F21/06
Filed: 1943-10-25
Abstract: 571,858. Wireless receiving apparatus. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Oct. 25, 1943, Nos. 17504 and 17505. Convention dates, Oct. 24, 1942 and Nov. 21, 1942. [Class 40 (v)] [Also in Group XXXV] A variable inductance in a resonant circuit comprises an inductance coil and a main magnetic core adjustable relatively to the coil for providing coarse tuning of the circuit, and an auxiliary core adjustable relatively to the coil to provide fine tuning of the circuit. Fig. 2 shows one form of multiple core inductance suitable for use in band-spread tuning of a wireless receiver. Two insulating formers 11, 12 are mounted close together in a shield can 13. A coil L1 is mounted on the former 11 and has its inductance variable by means of a main core K1 of dust iron. An auxiliary core K2 slidable in former 12 serves to provide a small change of inductance for the complete range of movement of the auxiliary core. The shield can 13 enhances the effect by constraining the flux about the coil L1. For band-spread tuning, the main core K1 is adjustable in steps to positions corresponding to the centre frequencies of the several short-wave bands, and band-spreading throughout the selected waveband is effected by movement of the auxiliary core K2. In a modified construction, Fig. 5, the former 12 may also have a few turns L2 in series with coil L1 and in aiding phase. In this case the interaction of the two coils and cores gives a more satisfactory band-spread characteristic, which can also be improved by tilting the formers relativeto one another, by the provision of dust iron washers on the end of the coils, or by the provision of a dust iron shell between the shield can and the coils. Fig. 4 shows a number of units of the form shown in Fig. 2, used for bandspread tuning in a superheterodyne receiver comprising an aerial A, high-frequency stage 6, and detector-oscillator 8. The RF circuits 1<1> and the oscillator circuit 7 are all tuned by inductances each having a main core K 1 and an auxiliary core K2. The wavebands are selected by moving cores K1 in unison to positions corresponding to the centres of the bands, and band-spread tuning is effected by moving auxiliary cores K2 in unison. In a modified circuit, Fig. 7 (not shown), band-spreading is effected solely by tuning the oscillator circuit by a unit as shown in Fig. 5. In this case, the radio-frequency circuits have band pass characteristics, and are tuned for wave-band selection by the step-by-step movement of a single core. Specifications 571.787 and 571,836 are referred to.
Patent GB-722321-A (GB)
Title: A process for improving the properties of wet fastness of dyeings or prints and compositions suitable therefor
IPC: D06P5/06
Filed: 1951-07-26
Abstract: The wet-fastness of dyeings or prints produced with water-soluble direct-dyeing dyestuffs containing sulphonic or carboxylic acid groups is improved by after-treating them with an aqueous solution containing a condensation product of an aldehyde with a biguanide-like compound which has been obtained by heating at a temperature of above 160 DEG  C. dicyandiamide with a salt of an aliphatic or cycloaliphatic amine containing at least two primary or secondary amino groups.  A suitable condensation product may be prepared in the presence of an alkaline substance from 2-6 mols. of formaldehyde and 1 mol. of a compound obtainable by heating dicyandiamide with a salt of an aliphatic amine containing two primary amino groups.  The after-treatment may be combined with a treatment with a water-soluble copper compound, e.g. a cupric tetrammine acetate.  A crease-resisting finish may be simultaneously applied.  In examples, (1) and (2) dyed cotton fabric is aftertreated with a composition prepared by condensing formaldehyde with the product obtained by condensing ethylenediamine dihydrochloride with dicyandiamide; (3) the first example is repeated using the product obtained by condensing formaldehyde with the condensation product from diethylenetriamine trihydrochloride and dicyandiamide; (4) dyed regenerated cellulose staple fibres are impregnated with dimethylol urea, ammonium chloride, the condensation product of (1) and copper acetate, dried and heated; (5) the previous example is repeated using the condensation product of (3); (6) and (7) the dyed fabric of (1) is impregnated with a condensation product obtained from formaldehyde and the product obtained by condensing ethylenediamine dihydrochloride with dicyandiamide; (8) and (9) dyed cotton fabric is impregnated in a bath containing the condensation product described in (1) and copper acetate.
Patent GB-976109-A (GB)
Title: Production of containers comprising a thermoplastic resin
Inventor: FELDMAN PETER BLANDFORD
IPC: B29C51/16
Filed: 1962-05-09
Abstract: 976,109. Thermoplastic resin containers. MONSANTO CHEMICALS Ltd. March 25, 1963 [May 9, 1962], No. 17792/62. Heading B8D. An open-topped container is formed on a ring, e.g. of cardboard or paper, over which a heated sheet of thermoplastic resin, e.g. foamed polyestrene, is applied by fluid pressure, the ring becoming an integral reinforcement in the container wall. In a modification, the ring is seated on a shallow spigot which thereby raises the level of the container base and may itself be retained as a reinforcement, Fig. 3 and 4 (not shown). The container may have an internal partition wall. The ring may be formed of aluminium, brass or steel, or of synthetic plastics. The sheet may be transparent and the wall of the ring decorated. Other examples of plastics materials suitable for the sheet are given. The container may be of rectangular horizontal cross-section.
Patent GB-111891-A (GB)
Title: Telephone Memo Filing Receptacle.
Inventor: BRYDGES SAMUEL MARKHAM
IPC: B42F17/00
Filed: 1916-12-11
Abstract: 111,891. Brydges, S. M. Dec. 11, 1916. Cabinets.-An open-sided paperfiling drawer 4 is placed in the recess 3 of a base 2, upon which a telephone is mounted. The front end 6 of the drawer is hinged to its base, and the inside is provided with a surface from which writing in lead pencil can be removed. Indicating partition-leaves 8 and a memorandum tablet 13 are secured to the rear end 5 of the drawer by a pin 7. A pin 10 sliding in a groove 11 limits the movements of the drawer.
Patent GB-248996-A (GB)
Title: Heat-treated alloy steels containing zirconium
IPC: C22C38/14
Filed: 1925-07-14
Abstract: 248,996. Potts, H. E., (Electro Metallurgical Co.). July 14, 1925. Hardening; tempering.-Steel alloys containing zirconium are hardened by being quenched from a high temperature, which may be 843‹ C., and are drawn by heating at a lower temperature, which may be 200-600‹ C.; or the drawing operation may in some cases be omitted. Specification 210,388 is referred to.
Patent GB-1400970-A (GB)
Title: Production of alpha-olefins by displacement from aluminium trialkyl growth products
IPC: C07C11/02
Filed: 1973-04-13
Abstract: 1400970 Alpha-olefins CONTINENTAL OIL CO 13 April 1973 [15 May 1972] 17949/73 Heading C5E α-Olefins are prepared by catalytic displacement from an aluminium trialkyl growth product with a lower α-olefin, carbon monoxide being introduced into the reaction mixture to inhibit reverse displacement and/or isomerization before separation of the products. The aluminium trialkyl may contain C 3 -C 40  alkyl groups and the lower α-olefin may have 2 to 6 carbon atoms, e.g. ethylene. The displacement reaction may be carried out at 100-700 F., 5-5000 p.s.i.g. in the presence of a Ni, Co, Pd or Fe displacement catalyst and optionally a high boiling diluent. The CO may be introduced in amount 10-5000 p.p.m. based on the reaction mixture prior to depressurizing the mixture. Preferred displacement catalysts are Rancy Ni, Ni-acetoacetonate or Ni-naphthenate in amount 0À001-0À1 wt. per cent of the growth product. The aluminium alkyl product may be deactivated by treatment with water or a mineral acid before separation from the α- olefin product which -may be maintained under an atmosphere of CO.
Patent GB-709800-A (GB)
Title: Method and means for making coil springs, filaments for incandescent bulbs and the like helically wound parts
IPC: B21F3/04
Filed: 1952-07-16
Abstract: 709,800. Coiling. NAGEL, J. July 16, 1952 [July 30, 1951], No. 17978/52. Class 83 (4) In a wire coiling machine wire 27 is fed through a guide 7 to a pitch blade 9 and is coiled on a rotating mandrel 11 by an inclined rotary member 6 with conical recesses 6a, 6b with generatrices parallel to the mandrel. The mandrel is rotated by an electromotor and is geared to the member 6 which is rotated in a holder mounted on trunnions and urged towards the mandrel by a spring. The pitch blade is adjustable around the mandrel.
Patent GB-834246-A (GB)
Title: Improvements in or relating to alumina hydrate compositions and alumina-supported catalysts prepared therefrom
IPC: C10G35/06
Filed: 1956-06-11
Abstract: Alumina hydrate, predominantly in the trihydrate form, is prepared by hydrolysis, at a temperature between 25 DEG  and 85 DEG  C., of an aluminium alcoholate, which has been prepared from aluminium and a lower aliphatic alcohol and purified by distillation, and then converting a major proportion of the resulting hydrous alumina into trihydrate, e.g. by seeding, ageing, or the addition of ammonia.  To form the alcoholate, aluminium is reacted with an alcohol, e.g. isopropyl alcohol, in the presence of mercuric chloride and/or carbon tetrachloride.  Distillation of the alcoholate may be carried out under vacuum, the first fraction and the residue being discarded. For the hydrolysis, the alcoholate is added to high-purity water, which may contain ammonia, with cooling and vigorous agitation. After hydrolysis, alcohol may be removed by filtering and washing with water.  Ageing may take place at 50-85 DEG  C. at a pH of 10-11. When conversion is carried out by seeding, the seed may be added to the hydrolysate or to the water used for hydrolysis.  The alumina hydrate is suitable for use in the preparation of supported hydroforming catalysts containing 0.1 to 1% platinum, rhodium, palladium, or iridium.  To incorporate platinum, chloroplatinic acid may be added to a slurry of the alumina trihydrate, followed by hydrogen sulphide to precipitate the platinum; the slurry preferably has a low electrolyte content and its pH may be reduced below 9 by filtering and reslurrying or by heating to remove ammonia. Alternatively platinum may be added to the support after drying, low-temperature calcination, and re-slurrying.  The support preferably contains 5-35% of amorphous hydrated alumina or boehmite. Fluorides or other acidic promoters may be included, and the final catalyst dried, formed into tablets or pills, and calcined.  Examples I-III describe the preparation of aluminium isopropoxide and Examples IV-VIII the hydrolysis of this alcoholate and conversion of the product to trihydrates. Examples IX and X relate to the preparation of a platinum catalyst and in Example X the hydrolysis of the alcoholate is carried out by feeding deionized water and the alcoholate simultaneously to a colloid mill, with rapid mixing and rapid chilling of the product. In Example XI, the platinum catalysts are used for reforming a straight-run naphtha.  Specification 735,390 is referred to.ALSO:An aluminium alcoholate, for use in the production of alumina catalyst carrier (see Group III), is prepared from aluminium and a lower aliphatic alcohol containing at least two carbon atoms and is distilled to obtain a purified fraction.  The reaction may take place under reflux in the presence of carbon tetrachloride or mercuric chloride as catalyst; excess alcohol is removed by distillation and the alcoholate is then distilled under vacuum, a first fraction and a residue being discarded.  Examples describe the preparation and purification of aluminium isopropoxide.
Patent GB-1134663-A (GB)
Title: Flanging of thermoplastic lined pipe
IPC: B29C43/00
Filed: 1966-04-25
Abstract: 1,134,663. Moulding flanges on thermoplastic liners for pipes. DOW CHEMICAL CO. 25 April, 1966 [26 April, 1965], No. 18057/66. Heading B5A. [Also in Division F2] A flange is moulded on a polypropylene lining of a steel pipe by a method comprising cutting away a portion of the pipe leaving an extending annular portion of the lining, putting a metal flange on the pipe, heating the lining to soften it and then moulding the lining to lie radially of the pipe along the metal flange, the moulding apparatus being withdrawn when the temperature has fallen below the softening temperature. A frame 46 connects the pipe 47 coaxially with the moulding apparatus, which comprises a ram 12 on the end 14 of which is slidingly and resiliently mounted a frusto-conical plug 20. As the ram pushes the plug inside the lining 49, thereby supporting and bending it outwardly, the plug slides against the action of spring 39 into a cavity 33 in an annular mould member 28 which is rigidly attached to the end 14 of the ram. As the ram extends further, a hollow cylindrical body 41 slidingly surrounding the member 28 abuts the flange 50, and then mould ends 29 of the member 28 engage the lining and push it against the flange, thereby forming a radially extending plastic flange. The temperature is then allowed to fall and the moulding apparatus with the frame 46, is removed. The operation is hydraulic, electrical or manual.
Patent GB-109901-A (GB)
Title: Improvements in or relating to Bracelets for Wrist Watches and the like.
Inventor: BLACKLOCK ROBERT
IPC: A44C5/22
Filed: 1916-12-18
Abstract: 109,901. Blacklock, R. Dec. 18, 1916. Watch bracelets.-A wrist strap adapted to be passed through loops B, B<1> on a watch is provided at one end with a hook D to engage a watch loop on a loose ring E, and at the other end has a clip F to engage over the adjacent part of the strap In a modification, the clip F is provided with a hinged jaw.
Patent GB-241315-A (GB)
Title: Improvements in or relating to indicating means for weighing or computing scales
IPC: G01G23/22
Filed: 1924-07-29
Abstract: 241,315. White, A. E., (Dayton Scale Co.). July 29, 1924. Computing-apparatus.-A weighing scale having a movable chart marked with a plurality of differently coloured sets of numerals which are arranged in concurrently ascending arithmetical progressions with their zero points offset by a particular amount, is provided with a pair of reading lines, which are fixedly arranged on the same side of the scale and co-operate with means for viewing different portions of the chart with light of different colours, whereby a double reading of correlated amounts may be taken. As shown, the invention comprises a cylindrical chart 17 provided with two sets of superimposed numerals, one set coloured red and the other green. Each set of numerals comprises a column of weights and a plurality of columns of value indications, the columns of value indications of one set relating to prices per unit-weight different from those of the other set. The zeros of the two sets of numerals are offset by the distance apart of two fixed reading lines 24<g>, 24<r>, which co-operate with a. green, reading lens 21<g> and a red, reading lens 21r respectively. Price scales 23<g>, 23r corresponding to the red and green columns of values are provided. The chart may be illuminated directly by a lamp 26 within the housing 25, or either directly or by reflection from lamps situated either within or without the housing. The chart may, instead of indicating values, indicate the load according to different systems of weights. Specification 156,615 is referred to.
Patent GB-278465-A (GB)
Title: Improvements in friction surfaces and the like
IPC: F16D69/02
Filed: 1926-07-21
Abstract: 278,465. British Dyestuffs Corporation, Ltd., Cronshaw, C. J. T., Baddiley, J., and Chapman, E. July 21, 1926. Clutches, friction.-In order to counteract the effect of moisture on the operative surfaces of friction clutches the surface is treated with water soluble protective colloids or wetting-out agents of the sulphonic acid class, which may either be added to the asbestos or other material forming the friction surface during the process of manufacture or may be applied to the surface subsequently. Substances which may be used, preferably in the form of their sodium salts, include the sulphonic acids of aliphatic hydrocarbons, the sulphonic acids of aromatic hydrocarbons containing an aliphatic, alicyclic, or aromatic-aliphatic side chain such as isopropyl naphthalene sulphonic acid, the sulphonic acids of hydrogenated aromatic hydrocarbons, such as tetrahydronaphthalene sulphonic acids, the sulphonic acids of condensed hydrocarbons, e.g. the condensation products of aromatic sulphonic acids and aldehydes, or lignone sulphonic acids. The products obtained by sulphonating certain petroleum fractions and condensing with isopropyl alcohol, as described in Specification 274,611, [Class 15 (ii), Dyeing, Processes &c. for], are also suitable, an example given being the sulphonating of 84 parts of the liquid sulphor-dioxide extract of Borneo petroleum with 92 parts of sulphuric acid monohydrate and condensing with 76 parts of isopropyl alcohol and 53 parts of sulphuric acid.
Patent GB-1111133-A (GB)
Title: Improvements relating to electromechanical transducers
IPC: G01P15/12
Filed: 1965-04-30
Abstract: 1,111,133. Electric solid-state devices. ENDEVCO CORPORATION. 30 April, 1965 [4 May, 1964], No. 18324/65. Heading H1K. [Also in Division H1]  A block of single conductivity type piezo resistive semi-conductor material is shaped to form two pads 12 bridged by a thinner neck 10. The shape of the neck is such that it will crush before buckling under compressive stress, so that it can be used as a strain gauge in both tension and compression, and also in bending. Several transducer applications are described (see Division G1). The material may be silicon, germanium, silicon carbide or gallium arsenide doped, e.g. with boron, to achieve a resistivity of about 3 ohm-cm. The shape of the neck is such that in longitudinal section it is bounded by two semi-circular arcs and it is bi-concave in all transverse, sections. The neck length is not more than four times the thickness of the thinnest portion, and the cross-sectional area of the pads is at least ten times the cross-sectional area of the thinnest portion of the neck.
Patent GB-962034-A (GB)
Title: Improvements in or relating to transfer devices for sheet dough or the like material
Inventor: OULTON KENNETH
IPC: A21C3/02
Filed: 1962-05-12
Abstract: 962,034. Endless conveyers. T & T. VICARS Ltd. April 16, 1963 [May 12, 1962], No. 18356/62. Heading B8A. A sheet of dough 30 is transferred from one endless belt conveyer 10 to a second endless belt conveyer 12 at an angle to the first by a roller 14 comprising a number of slots 18, each being independently displaceable parallel to the axis of the roller and urged into contact with a stationary cam 24 (either by springs or a co-operating cam 28). The cam 24 is so profiled that no stress is induced in the sheet of dough 30 as it passes around the roller 14.
Patent GB-146393-A (GB)
Title: A device for attachment to spades, forks, or other agricultural hand implements to facilitate the use thereof
IPC: A01B1/02
Filed: 1920-07-02
Abstract: 146,393. Favre, H. B. Jan. 16, 1915, [Convention date]. Spades; forks.-A spade, fork or like hand agricultural implement is provided with a support a formed as a triangular metal frame to which is pivoted a collar h for enclosing the shaft of the tool. This collar may co-operate with a shaped groove on the main part of the support so that the shaft is held against rotation except in positions nearing the-horizontal, when it is freed to enable the load on the implement to be thrown off. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the form shown on Fig. 1 (Cancelled) in which the support a is made of steel wire and secured to the handle by being wound spirally thereon at c and by screwing at e. Cross-bar b, b<1> form a base to the support. A loop f may be formed in the support to make it resilient. This subject-matter does not appear in the Specification as accepted.
Patent GB-978181-A (GB)
Title: Process for the dehydrogenation of hydrocarbons
IPC: C07C5/44
Filed: 1963-05-09
Abstract: <PICT:0978181/C4-C5/1> <PICT:0978181/C4-C5/2> Hydrocarbons are dehydrogenated by reaction with iodine or bromine by passing the reactants through an elongated chamber having a length to diameter ratio of at least 10 together with a solid acceptor capable of binding hydrogen halide as inorganic halide.  The acceptor used is preferably one which can be regenerated after use back into acceptor and halogen by reaction with oxygen as described in Specification 895,500, and may be supported on a carrier.  In one embodiment the regeneration and reaction are effected simultaneously and continuously in two elongated tubes joined end to end or one outside the other coaxially or in a single tube. Reactants and solid may flow upwards or downwards.  In Fig. 1 a fluidized bed of solid 4 is entrained by an oxygen-containing gas and flows upwardly through regeneration tube 1. Hydrocarbons are introduced by line 3 and react with regenerated halogen in the outer reactor tube and products recovered by line 7.  In order to avoid loss of halogen a nitrogenous base, preferably ammonia, is added to the reaction effluent and then the effluent is cooled to 85-150 DEG  C.  The base is preferably added as an aqueous solution together with an organic solvent to prevent formation of tar. The halogen is recovered by decomposing the product by contact with the solid acceptor in the regenerator or a separate chamber.  In Fig. 2, acceptor is regenerated in the lower half of tube 1 with oxygen from inlet 2 and hydrocarbon is added at 3.  Nitrogenous base is added by line 8 in separator 5 together with recovered base from chamber 17. After further cyclone separator 7 the effluent is cooled and the condensate passed from separator 12 by line 16 to contact acceptor material in chamber 17 where the halogen is bound by the acceptor.
Patent GB-794903-A (GB)
Title: Improvements in or relating to the production of foundry moulds, cores and gates
IPC: B22C23/00
Filed: 1953-08-15
Abstract: 794,903. Moulding-machines; moulding- processes. FOUNDRY EQUIPMENT, Ltd., and BEECH, A. S. Nov. 2, 1954 [Aug. 15, 1953 ; March 8, 1954], Nos. 18397/53 and 6718/54. Class 83 (1). A shell-moulding process comprises blowing a powdered sand-resin mix into a narrow space between heated box-sections so that the core, gate or mould-part is moulded on all faces, the sections of the box being thereafter separated to permit removal of the mould-part &c. In a machine, Fig. 1, shown moulding a gate, a twopart electrically-heated box 11, 12 is opened or closed by rams 15, 16, and a mix-box 22 is movable into register with the charging-opening 23 by an air cylinder 26, so that sand-resin mix may be blown into the box by air from a pipe 25. Opposite the charging-opening, a second opening is sealed by a hollow ram 37, within which works a ram 39 carrying an electrically heated plunger 40 which shapes the interior of the gate. In a modification, mouldhalves are made by injecting the mix into the narrow gap between a heated pattern. and a heated back-plate.