baber/WOPTO huggingface dataset:
Patent GB-583209-A (GB)
Title: Process for the preparation of hydroxylated derivaties of ª†,ª€-diphenyl-n-hexane
IPC: C07C43/205
Filed: 1939-03-16
Abstract: Hydroxylated derivatives of g ,d -diphenyl-hexane suitable for use as substitutes for the follicular hormone are prepared by condensing two molecules of esters, ethers or mixed alkoxy-alkyl ethers of a -halogenated-n-propyl hydroxybenzene in the presence of a metal having a dehalogenating action, and saponifying the condensation products to the free hydroxyl bodies.  The reaction may be represented as <FORM:0583209/IV/1> where R and R1 are hydroxybenzene radicals, the OH radicals of which are protected by ester, ether or alkoxyalkyl groups, X is a halogen and M a metal such as sodium, potassium or the liquid alloy of the two.  Thus, two molecules of anethol hydrobromide yield 4,41-dimethoxy-g ,d -diphenyl-n-hexane from which the corresponding hydroxy body may be obtained. Condensation of iso-sapol hydrobromide and anathole hydrobromide produces in addition to the two symmetrical substances 4-methoxy-31,41-methylene dihydroxy-g -d -diphenylhexane.  The methyl ether of iso-eugenol hydrochloride (or propenyl-3-4-veratrol hydrochloride) yields 3,4,31,41-tetramethoxy-g -d -diphenylhexane. In example 1, anethol is stirred with aqueous saturated hydrobromic acid at 0 DEG  C. and the methol hydrobromide diluted with benzene, decanted, washed with water and then with sodium bicarbonate and dried with sodium sulphate, followed by calcium chloride.  The benzene solution is mixed with metallic sodium chips in a flask fitted with a reflux condenser, and allowed to stand for 24 hours at a temperature not above 48 DEG  C.  More sodium is then added and the mixture refluxed.  The benzene is then evaporated, the residue dissolved in ether, washed with water, the ether evaporated and the residue vacuum distilled.  The product distils at 190-240 DEG  C. at 7 mms.  Dissolved in petroleum ether this product may then be crystallised (M.P. 144 DEG  C.).  Demethylation with hydrobromic acid preferably containing acetic anhydride yields 4,41 - dihydroxy - diphenyl-n-hexane (M.P. 182 DEG  C.).  In example 2 a benzene solution of propenyl-3,4-veratrol hydrochloride is introduced into a flask containing benzene and liquid potassium-sodium alloy.  The mixture is agitated and the temperature kept below 60 DEG  C.  After cooling, the benzene solution is decanted and purified to yield 3,4,31,41-tetramethoxy - g  - d  - diphenyl - n-hexane which after demethylation yields the corresponding hydroxy body.
Patent GB-798296-A (GB)
Title: Improvements in and relating to method and apparatus for the heat treatment of annular articles
IPC: B29D30/54
Filed: 1955-03-23
Abstract: 798,296. Drying annular articles. COCKERILL, E. E., and MORLEY, L. W. R. March 23, 1956 [March 23, 1955], No. 8429/55. Class 34(2) After remoulding, rubber tyres are dried by infra-red heaters 10, 5, Figs. 1, 2, whilst being rotated on a drum 8 of squirrel cage construction. The apparatus shown comprises two such drums driven and controlled by machinery housed in a stand having a leg 2 telescopically fixed thereto which carries arms 3, 4, supporting respective heaters 5, 6, and associated reflectors 11. Each drum comprises bars 14 secured at one end to an annular plate 15 and at the other to a plate 20. Heaters 10 are located within the drum and a plate 13 is provided for attachment to the plate 20 to retain the tyres on the drum. The heaters 10 may be dispensed with and the heaters 5, 6 may be mounted laterally of or underneath the drums. The stand and leg 2 may support more than two drums with associated heaters e.g. four. The apparatus may comprise a single drum mounted between the uprights of a gantry the transom of which carries the heaters. In another embodiment the tyres may be stacked on a horizontal turntable adjacent which is/are positioned one or more vertically extending heaters, further heaters being located within the periphery of the stack if required. Alternatively, the stacked tyres may be stationary and the heaters mounted so as to move either externally or internally of the periphery, or both. A blower may be provided to blow hot or cold air into the space surrounded by the peripheries of the tyres to displace any moisture laden air therefrom. Enamelled rings or rims may also be dried by the above apparatus. The rotary movement given to a tyre may be accompanied by a simultaneous translational movement normal to its axis.
Patent GB-1061474-A (GB)
Title: Synthetic zeolites
IPC: C01B39/02
Filed: 1964-02-28
Abstract: Zeolite embedded in a silica gel or a silica-metal oxide cogel matrix is prepared by crystallizing the zeolite from an aqueous reaction mixture containing Na2O, SiO2 and Al2O2 to form a product slurry of zeolite and mother liquor.  This slurry is then mixed with either an aqueous silica slurry or with an aqueous cogel slurry of silica and at least one other hydrano oxide of a metal of Group IIa, IIIb or IVa of the Mendel<\>aeef Periodic Table (e.g. Al2O3) to form a fluid admixture.  The latter is then subjected to a rapid drying operation (e.g. spray drying) to yield a composite material comprising the zeolite embedded in the silica gel or cogel matrix. The zeolite may have the following molar ratio of constituents: 0.9\sB0.2 Na2O: Al2O3: XSiO2 where x has a value > 3 and in which the molar ratios of the constituents are in the following ranges: .Na2O:SiO2.0.25 to 0.60 .SiO2:Al2O3.4 to less than 8 .H2O:Na2O.20 to 40 .Na2O:Al2O3.1.6 to 3.5 The initial reaction may be carried out at 180-250 DEG  F. and the reaction mixture maintained at this temperature for a time sufficient to crystallize the zeolite.  The dried zeolite may be subjected to base exchange with an aqueous soln. of an ion capable of reducing the Na2O content to less than 10 wt. per cent based on the weight of zeolite.  Examples of such ions are hydrogen-containing cations, cations of metals of Groups II, III, IV, V, VIb, VIIb and VIII of the Periodic Table, and cations of the rare earth metals.ALSO:Cracking catalysts consist of zeolite embedded in a matrix of silica gel or in a silica-metal oxide cogel matrix. Specified oxides are those of metals of groups IIA, IIIB or IVA of the periodic table (Mendeleef) (e.g. Al2O3) to form a fluid mixture which is then subjected to a rapid drying operation (e.g. spray drying) to form a composite material comprising zeolite embedded in either a silica or silica-metal oxide cogel matrix.  The Zeolite may have the following molar ration of constituents: The dried zeolite matrix may be subjected ot a base exchange with cations of metals of Groups II, III, IV, V, VI B, VIIB and VIII of the Periodic Table and cations of the rare earth metals.
Patent GB-308589-A (GB)
Title: Sparkless commutator chiefly for phonograph motors
IPC: H01R39/04
Filed: 1929-03-15
Abstract: 308,589. Etablissements Igra. March 24, 1928, [Convention date]. Commutators: improving commutation, auxiliary means for. - Sparking in small motors is prevented by connecting all the commutator segments together by means of a semi-conducting material applied in an annular groove 2 and covered with a protective coating. The material may take the form of a paste made, for instance, from graphite, coal, metallic oxides or other semi-connectors mixed with water and an adhesive. The material should be such as to give between segments at the ends of a diameter a resistance of approximately 90 to 92 per cent of the original armature resistance. In an alternative form, the short-circuiting of the segments may be carried on an auxiliary commutator arranged without brushes at the free end of the armature. The device is particularly applicable to the motors of phonographs having electrical amplifying devices or used near wireless apparatus where sparking at a commutator may cause interference.
Patent GB-887900-A (GB)
Title: Improvements in the production of highly polymeric quaternary ammonium compounds
Inventor: WILHELM HANS
IPC: D21H17/37
Filed: 1960-03-11
Abstract: 887,900. Paper containing synthetic polymers &c. BADISCHE ANILIN- & SODAFABRIK A.G. March 11, 1960 [March 14, 1959; March 17, 1959 (2)], No. 8619/60. Class 96. [Also in Groups IV (a) and IV (b)] The properties of paper, e.g. wet and dry strengths, stiffness, greaseproofness and dispersion of the filler, are improved by adding to the paper pulp a. water-soluble quaternary ammonium copolymer made by copolymerizing one or more ethylenically-unsaturated monomers with the quaternized condensation product of acrylamide or methacrylamide with formaldehyde and a secondary amine (see Group IV (a)). The addition of such copolymers to paper pulps is described in Examples 23 to 27.
Patent GB-705604-A (GB)
Title: Improvements relating to voltage control means, especially for electroprecipitators
IPC: B03C3/68
Filed: 1951-04-13
Abstract: 705,604. Automatic control systems for electrostatic precipitators. HEINRICH, D. O. March 18, 1952 [April 13, 1951], No. 8623/51. Class 38 (4) The electrode voltage of an electrostatic precipitator is automatically maintained just below the flash-over voltage by varying the input voltage in response to variations in electrode current. The precipitator 3 is supplied from a variable voltage high tension transformer 1, the output voltage of which is controlled by a reversible servomotor 10 controlled by a relay 7. A resistor 4 is connected in series with the electrodes and is shunted by a neon lamp 5, the voltage drop across the resistor being such that when normal full load current is flowing (or when a flashover occurs) the lamp 5 strikes and discharges a condenser 6 to energize the relay 7, which according to the time constant of the circuit either opens the motor circuit or closes the other contact to reverse the motor and reduce the voltage. Normally the relay energizes the motor in a sense to raise the voltage. In a modification, Fig. 2 (not shown), the relay coil is connected in the circuit in place of the resistor and is normally energized, the neon lamp being in parallel with the relay coil so that when it strikes the relay is de-energized.
Patent GB-168086-A (GB)
Title: Improvements in or relating to air guns and the like
IPC: F41B11/51
Filed: 1920-03-24
Abstract: 168,086. Edenborough, H. March 24, 1920. Pneumatic.-Relates to air-guns of the magazine type, and consists in means whereby the member that transfers the pellet from the magazine to the discharge position is moved transversely into the receiving position at each operation of the cocking-lever. The invention is shown applied to an air-gun of the kind having a fixed barrel and a separate cocking-lever. The pellets 5 are contained in a tubular magazine 4 and are fed to the barrel by a slide 10 having an aperture 14 to receive a pellet. The slide is held in the raised position by a block 15 fixed to a sliding rod 17 mounted in the cocking-lever with its end 26 projecting from the front, so that it is pushed back when the catch 21, which locks the cocking lever, is released. The slide is depressed by springs 11, Fig. 4. When the cocking lever is returned, the block 15 is in its forward position and engages under the loading slide 10 and raises it. The magazine tube 4 is slotted at 28 so that an indicator 29 may be seen when the magazine is nearly empty. A safety-catch, such as a pin 30, may be provided to hold the slide 10 in the raised position. Means are also provided to prevent the entrance of the end of the magazine spring 6 into the slide when the magazine is empty.
Patent GB-372723-A (GB)
Title: Fuse for rotating projectiles
IPC: F42C15/22
Filed: 1931-05-08
Abstract: 372,723. Projectile fuzes. BRANDT, E. W., 101, Boulevard Murat, Paris. May 8, 1931, No. 8691/32. Convention date, June 4, 1930. Divided on 378,087. [Class 9 (i).] A sensitive combined direct-action and momentum-action fuze comprising a striker 1 and a percussion cap 3 is normally held inwards in a safe position, Fig. 1, against a seat 7 by a spring 6, but is forced forward to the armed position, Fig. 2, by centrifugal force acting on balls 8 or other members after the discharge of the projectile and is held in that armed position until the centrifugal force falls below a certain 'value when the fuze is returned to the safe position by the spring 6. This makes the fuze alive against aircraft, but safe again on striking ground after missing aircraft. The percussion cap 3 is carried by a tubular member 2 which is made in one with the striker as in Fig. 1 or is attached to the striker by a pin 4, Fig. 2. On impact of the fuze in the armed position, the member 2 is crushed or the pin 4 sheared, and the striker drives against the percussion cap. Specification 378,087 is referred to.
Patent GB-185441-A (GB)
Title: A sparking plug testing device
IPC: H01T13/58
Filed: 1921-03-21
Abstract: 185,441. Denton, F. M. March 21, 1921. Current detectors.-For testing the ignition of internal-combustion engines, a vacuum tube containing neon &c., is mounted within a cavity in an insulating holder B. A spring S or the like is provided between the tube VT and the screw cap C, and the holder B has an axial bore by way of which the glow in the tube may be seen.
Patent GB-656514-A (GB)
Title: A new or improved portable head rest
IPC: A47C9/10
Filed: 1947-04-01
Abstract: 656,514. Head rests. MITCHELL, M. April 1, 1947, No. 8849. [Class 52 (ii) ] A portable head rest comprises a base member 1 supported on pivoted feet 7 and to which are pivoted supporting arms 3 which abut the face 5 of shoulder stops 2 in their upright position or the face 6 in their folded position. A hammock 14 is provided with rings 10 which swivel in clips 11 and hook over the upper ends of the arms 3.
Patent GB-558205-A (GB)
Title: Improvements in and relating to thermal switches
IPC: H05B41/08
Filed: 1942-06-29
Abstract: 558,205. Thermal switches. BRITISH THOMSON-HOUSTON CO., Ltd. June 29, 1942, No. 8943. Convention date, July 1, 1941. [Class 38 (v)] In glow-discharge thermal switches the break-down voltage is a function of the spacing of the electrodes. In the case of a bimetallic electrode this spacing varies with ambient temperature. To render it constant over a given range, a fixed gap is made which is smaller than the maximum separation of the electrodes. In the example, the substantially fixed gap between the bimetallic electrode 18 and an extended electrode 17 is less than that between the contact-making end 19. In a modification the electrode 17 has a right-angled extension over the top of the U- shaped electrode 18, and in another the support of electrode 18 has an extension which lies near to the fixed electrode. Specifications 538,072, 541,925 and 556,428 are referred to.
Patent GB-182522-A (GB)
Title: Improved construction of gas-making apparatus
IPC: C10J1/18
Filed: 1921-03-23
Abstract: 182,522. Hildick, H. March 23, 1921. Carburetting.-In carburetting-apparatus comprising a blower which supplies air through a bell or governor to a carburettor, the carburettor is formed of a narrow casing 1 in which rotates a thin disc 12 mounted upon a spindle 4 carried by bearings 3 in the casing 1. The bottom of the casing is supplied with vaporizing-spirit, and air is admitted to the wetted surface of the disc through a series of holes 11 provided in the casing and positioned vertically above the bearings covered by shields 5, 6 closed at the ends near the bearings but having an inlet 8. A similar arrangement positioned at right-angles to the air inlet but having an outlet 9 is provided for the carburetted air. In modifications, several discs 12 may be mounted upon the same spindle within the casing and any member of these units may be employed side by side. In a particular form of the latter type two carburettors may be used, the casings being supplied with commercial benzole and petrol respectively.
Patent GB-939236-A (GB)
Title: Improvements in or relating to electrical resistors and methods of producing electrical resistors
IPC: H01C7/00
Filed: 1960-03-14
Abstract: 939,236. Resistors. SIEMENS & HALSKE A.G. March 14, 1960 [March 13, 1959; May 22, 1959], No. 8989/60. Class 37. Resistors are constructed by depositing on to a slab of insulating material 1, Fig. 1, strips of resistive material 3 intersecting strips of conductive material 2, and dividing up the slab to form resistors of the general shape shown in Fig. 3 or Fig. 12. The trapezoidal-shaped conductive legs 5, Fig. 3, may be inserted into slots in a slab of insulating material 6, Figs. 3 and 4, provided with conductive strips 7 to which legs 5 can be joined by dip soldering. The cut edges of the resistors may coincide with the edges of the individual resistive strips, Fig. 1, or may divide the resistive strip into two parts, Fig. 2, which if unequal give rise to resistors of unequal value but with similar legs. Change of width of the conductive strips yield resistors of different value, but the same overall size and shape, Fig. 5, and a variation of width of a resistive strip along its length yields resistors of a series of different values. The resistors may be stamped out of the slab, or the latter may be broken along pre-formed grooves running between pairs of conductive strips, Fig. 6. The conductive strips may be interrupted to enable the resistive strips to be completely covered by a protective layer 9, Fig. 7, and the conductive strips may be improved by silver or gold plating. The conductive and resistive strips, and the protective coating, may all be applied by printed circuit techniques. After stamping or breaking off, a resistance value may be adjusted by reducing the area of the resistive strip. Other arrangements are described (Figs. 8 to 11, 13, and 15 to 19, not shown) including a potential divider, Fig. 14, and a potentiometer, Figs. 20 and 21, in which a slider connects a resistive strip 10 and a conductive strip 12 on opposite sides of an insulating slab. Specification 939,237 is referred to.
Patent GB-350082-A (GB)
Title: Improvements in or relating to artificial limbs
IPC: A61F2/58
Filed: 1930-03-20
Abstract: 350,082. Wrists for artificial arms. BLATCHFORD, C. D. W. and BLATCHFORD, W. A. D., 90, Clapham Road, Stockwell, London. March 20, 1930, No. 8995. [Class 81 (ii).] A detachable wrist joint or hand member for an artificial limb comprises a sleeve s on the one member which slides over an extension piece b on the other member and is secured against axial movement by a spring detent q which passes through an aperture in the sheath to engage a groove p in the extension b. The detent may be released by a button n. The sleeve s is provided with teeth u engaging teeth d on a spring-pressed sleeve c mounted on the extension b. Rotation of the sleeve c is prevented by a bolt i; axial movement of the sleeve is normally permitted by a slot o and a hole m<1 >in the sleeve thus permitting rotation of the sleeve s for adjustment while retaining it against accidental displacement. On pushing in the bolt i the hole m<1> is closed by a button k on the shaft locking the joint. The sleeve c may be housed within a cover-sleeve h which may be secured to the extension b by a grub-screw y, a slot z being provided in the sleeve c to allow movement thereof.
Patent GB-673248-A (GB)
Title: Rotary duplicating machines for obtaining prints from printing surfaces
IPC: B41L11/00
Filed: 1950-04-12
Abstract: 673,248. Rotary duplicators. RITZERFELD, W., and RITZERFELD, G. April 12, 1950 [Oct. 1, 1948], No. 8999/50. Class 100 (ii). A rotary duplicating machine comprises a rotatable printing drum 6, Fig. 1, and is operable as an addressing machine by passing a plurality of printing members 1 therethrough, a separate receptacle 10 being arranged behind the printing line 3 for collecting the printing members 1, guide members 7, 9 being provided for separating the printed copy sheets 4 from the printing members 1 and for guiding the sheets 4 into a tray 8 beneath the collecting receptacle 10. The members 1 are narrower and stiffer than the sheets 4 which are deflected by laterally-spaced members 7 into the tray 8. In the construction shown in Fig. 2, a liquid container 11 embodies a guide lla for a fixed printing member 12 which is fed to the printing drum 14 and clamped thereto at 13. Further printing members 17 are fed via the guide 11a, and further similar printing members 18 may be fed simultaneously over a guide 19 disposed on a moistening device 20. A mark or step may be provided on the container 11 in order to ensure that the printing member 17, is correctly displaced laterally relative to the member 18. Thus the same matter is printed on all the copy sheets from the printing member 12, while different texts, respective to each sheet, are printed by the members 17, 18. The printing members 1, Fig. 1, and 17, 18, Fig. 2, are pre-inked mirror-script originals.
Patent GB-673438-A (GB)
Title: Oxide cathode and process for the production thereof
IPC: H01J9/04
Filed: 1950-04-13
Abstract: 673,438. Cathode materials and processing. EGYESULT IZZOLAMPA ES VILLAMOSSAGI R. T. April 13, 1950 [May 11, 1949], No. 9129/50. Class 39 (i). An oxide cathode for electric discharge tubes comprises an emissive coating provided on a metal core, in which the composition of the coating is 2 barium oxide : 1 strontium oxide : 2 calcium oxide, by their molecular weights. The coating may be produced by grinding together barium carbonate, strontium carbonate, and calcium carbonate and applying the powder together with a suitable binding agent, e.g. a nitrocellulose solution, to the surface of the metal core by painting, spraying, or cataphoresis and converting the carbonates into oxides, preferably by heating the cathode. Alternatively it may be produced by dissolving the soluble salts of barium carbonate, strontium carbonate, and calcium carbonate in water and precipitating the alkaline-earth carbonates therefrom with the aid of ammonium carbonate or sodium carbonate in the form of mixed crystals, which are mixed with a binding medium and applied in known manner. The mixed crystals may be first prepared with a grain size larger than is suitable for application to the metal core, and reduced by grinding either by supersonic vibration or treatment in a colloid mill, or sodium hydroxide may be added to the dissolved nitrates for carrying out the precipitation with a suitable grain size and the sodium carbonate solution necessary for the precipitation thereafter added.