baber/WOPTO huggingface dataset:
Patent GB-457910-A (GB)
Title: Improvements in apparatus for the quantitative determination of small proportions of carbon gases in gaseous mixtures
IPC: G01N21/78
Filed: 1936-03-05
Abstract: <PICT:0457910/III/1> Apparatus for the determination of carbon-containing gases comprises a measuring-chamber 1 from which a sample of gas is passed through an absorber 6 for removing carbon dioxide originally present, a combustion tube 7 for oxidizing the carbon components and a bubbling tube 9 preferably of helical profile containing a definite amount of an indicator solution sensitive to carbon dioxide.  The indicator solution after use is passed into a trough 13 with parallel sides, situated between a source of light 23 and a photo-electric cell 25.  The latter is connected in opposition to a second cell 27 with a microammeter 28 in bridge. The indicator is supplied from a measuring-vessel 19 fed by a constant level reservoir 17.  A reservoir 22 contains a solvent for washing out the apparatus, and a bulb 21 is used to start the siphon 14 discharging the contents of the observation chamber 13. In a modification, the measuring of the gas sample is effected automatically by a mechanical pump, to which the various cocks controlling the apparatus may be connected.
Patent GB-687233-A (GB)
Title: Improvements in the manufacture of ketone-diarylamine condensation products
Filed: 1951-03-21
Abstract: Condensation products having a viscosity of 1-100 poises at 30 DEG C. are prepared by heating at 275-310 DEG  C. in an autoclave (1) diphenylamine with (2) molar excess of acetone in presence of (3) a catalyst which is iodine or bromine or which contains iodine or bromine, e.g. hydriodic acid, hydrobromic acid or the iodides or bromides of the non-lead heavy metals (see U.S.A. Specification 1,975,167).  The products contain free diphenylamine and may be used as antioxidants for natural or synthetic rubber (e.g. a butadiene/styrene copolymer).  In an example diphenylamine and acetone are heated in an iron autoclave at 280-290 DEG  C. for 5-6 hours in presence of FeI2.4H2O, the contents of the autoclave discharged, volatile material removed under vacuum and p  the product washed with alkali and water.  U.S.A. Specification 2,002,642 also is referred to.
Patent GB-1453376-A (GB)
Title: Naphthalene carboxylic acids and derivatives thereof
IPC: C08G63/54
Filed: 1974-02-14
Abstract: 1453376 Naphthalene tetracarboxylic acid TEIJIN Ltd 14 Feb 1974 [14 Feb 1973 15 Feb 1973 3 March 1973 (2) 19 March 1973 (2) 29 March 1973] 6740/74 Heading C2C The invention comprises 1,3,5,7-naphthalene tetracarboxylic acid, and salts and esters thereof. The tetra alkali metal salts of 1,3,5,7- naphthalene tetracarboxylic acid may be prepared by heating another naphthalene compound containing 1-4 alkali metal carboxylate groups to at least 350‹ C. in an atmosphere of an inert gas. The free acid and also the 3,7 dialkali metal salt of the free acid are obtained by treating the tetra alkali metal salt with an acid. The free acid may be esterified.
Patent GB-893783-A (GB)
Title: Process for the production of atomic energy by a catalytic method
IPC: G21B1/00
Filed: 1960-02-26
Abstract: 893,783. Thermonuclear apparatus. WEISS, J. Feb. 26, 1960 [April 28, 1959], No. 6782/60. Class 39(4) In a process for producing energy from nuclear fusion, carbon, preferably in the form of methane, is provided as a catalyst. X-rays or gamma rays may also be used to speed up the reaction.
Patent GB-1163656-A (GB)
Title: Composition and Articles Made Therefrom.
IPC: C08L9/00
Filed: 1967-02-13
Abstract: 1,163,656. Moulding compositions based on trans-1,4-polyisoprene. POLYMER CORP. Ltd. 13 Feb., 1967 [16 Feb., 1966], No. 6789/67. Heading C3P. A composition comprises a major proportion by weight of trans-1,4-polyisoprene together with a minor proportion by weight of a compatible polymer together with 30-150 parts by weight per 100 parts by weight total polymer of a filler having an average particle size less than 45 Á. Suitable compatible polymers are butyl rubber, oil-extended SBR and a mixture of SBR and styrene-butadiene resin. Suitable fillers are kaolin, calcium carbonate, carbon black and silica. The composition may be moulded to form a cutting block.
Patent GB-565877-A (GB)
Title: Improvements in or relating to electric switchgear
IPC: H02B1/00
Filed: 1943-04-29
Abstract: 565,877. Switchgear structures. REYROLLE & CO., Ltd., A., CHRISTIE, J., and ALLAN, A. April 29, 1943, No. 6795. [Class 38 (v)] A switchgear structure employing an airblast or " low-oil " switch as the main circuitbreaker, has the latter screened against accidental contact and mounted over the housing of the metal-clad associated parts to which at least one of its poles is connected by a conductor passing into the housing. The latter comprises, in Figs. 1 and 3, a compartmented metal housing A, the feeder B entering compartment A<1> and being connectible to one breaker-terminal E<1> by cable isolator B<2>. Current and voltage transformers C, D and an isolator D<1> for the latter are also housed in A<1>. The duplicate bus-bars F, F<1> in compartments A<2>, A<3> are connectible by switches F<2>, F<3> of the type set out in Specification 472,656, alterna- . tively to earthing contact F<8> or to contacts G<1>, G<2> on a post insulator G serving as one pole of an air-break isolator G<3>. The low-oil type breakers E have insulating containers E<2> and metal housing E<3> for a fixed contact and explosion pot E<4>, such as set out in Specification 435,250, 435,308, 452,146 or 460,219. The movable contact E<8> is slidable within a hollow insulator E<6> on the housing A and connects the fixed contact to spring contacts E' in the housing E 5. The breaker and isolator are sequentially operated by means such as described in Specification 637,302 and the breaker may be short-circuited by the arm G3 in the open position, as in that Specification ; both are surrounded by an earthed screen H of expanded metal. The invention is applicable also to ring bus-bar systems, such as described in Specification 505,638, Figs. 5-7 (not shown), to a single bus-bar system not provided with bus-bar sectionalizing switches, Figs. 8, 9 (not shown), and to systems in which one pole of the breaker is connected to an overhead line. In Fig. 10, an air-blast switch P and isolator T, T<1> are mounted on a carriage P<2> which is vertically movable by a pneumatic motor W <2> supplied from a reservoir W, as shown in the left-hand unit of Fig. 10, and carries phaseseparating screens W<1>. The terminals P<1>, R<2> extend, in the operative position, through the floor V into contact with feeder and bus-bar terminals N<1>, R<1> in compartments N, M of housing A<7>. The latter also includes a voltage transformer S<1> and isolating switch S<2> adapted to earth it at S<4>. A current transformer T<2> is supported by the floor V. The metal compartments may be filled with compound, liquid, or gas, for example, air at two atmospheres, and may be separated from the breakers by a framework supporting both.
Patent GB-198769-A (GB)
Title: Improvements in or relating to electrically propelled vehicles
IPC: B60L15/38
Filed: 1922-03-08
Abstract: 198,769. Hewitt, L. B., and Metropolitan Electric Tramways, Ltd. March 8, 1922. Electric braking.-In multiple-control systems for breaking a train of electrically propelled vehicles by converting the motors into generators, each motor-vehicle, in addition to switches controlled in common from a master controller on one of the vehicles, has a change-over switch tending to move from a power position to a brake position but normally prevented from doing so by an electromagnet energized by the line current. When the current fails all the change-over switches move automatically so as to connect the motors of all. the vehicles in a circuit arranged as in the Figure, comprising motor-armatures 32, 33, field-windings 34, 35, braking resistances 31, and magnetic brakes 53.
Patent GB-1503334-A (GB)
Title: Tuning apparatus using a voltage-dependent reactance element
IPC: H03J5/02
Filed: 1975-02-18
Abstract: 1503334 Tuning arrangements MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 18 Feb 1975 [25 Feb 1974 (2) 4 March 1974] 6854/75 Heading H3Q In a tuning apparatus a circuit 24, Fig. 2, converts a tuning voltage from a voltage sweep circuit 23, which supplies a voltage dependent reactance element of a tuning circuit, to a voltage which varies linearly with tuning frequency and a voltage comparator 29 compares the output voltage of the circuit 24 with a predetermined voltage such as selected by 25-28 and controls the sweep of the voltage sweep circuit to produce the desired tuning voltage. In Fig. 2 the voltage sweep circuit 23 (Fig. 4, not shown) supplies a tuning voltage to a varactor diode of a local oscillator 22 (Fig. 3, not shown) and to an input VR at I, Fig. 1, of the circuit 24. An output from the comparator 29 stops the sweep of the circuit 23 at the selected frequency. In a second embodiment Fig. 7, when a tuning voltage VR is selected by a switching circuit 33 it is added to the tuning voltage #VR supplied by the voltage sweeper 23 and the combined voltage is supplied to the varactor diode of the local oscillator 22 and via a circuit 24 (Fig. 1) to the input V1 of an operational amplifier 38 which functions as a subtraction circuit. The amplifier 38 compares the linearly varying output of 24 corresponding to VR+#VR with a linearly adjusted output of a circuit 50 which is the same as 24 (Fig. 1) corresponding to the selected tuning voltage VR. When the output V3 of the amplifier 38 reaches a standard voltage of generator 46 the comparator 29 resets the voltage sweep circuit 23 which restarts and is stopped by a circuit 49 when the selected frequency is received. The circuits 24, 29, 38, 46 and 50 function to ensure voltage sweeps by 23 of constant widths such as MHz for TV broadcasts and the sweep will be restarted from the preset frequency if a temporary detuning occurs due to interruption of the broadcast so that automatic retuning to the received frequency is assured.
Patent GB-628017-A (GB)
Title: Improvements in or relating to vapour generators
IPC: F22B37/22
Filed: 1947-03-12
Abstract: 628,017. Water-tube steam boilers; headers. BABCOCK & WILCOX, Ltd. March 12, 1947, No. 6904. Convention date, March 12, 1946. [Class 123(ii)] [Also in Group XXVIII] In a steam &c. generator in which the walls of the furnace are each lined with closely pitched tubes 15A, 15B extending between upper and lower headers 16, 17 or between a lower header 23, 25 and the upper steam-and-water drum 12 of the generator, the said headers are of cylindrical form and are provided with two lines of staggered tube holes 27, 49 to receive the associated tube ends, the planes respectively containing the two lines of holes being non-radial and relatively inclined at an acute angle A within which is located the longitudinal axis of the header. Alternate tubes 15A are straight and are jointed to the tube holes 49 of one row, and the other tubes 15B, reversely bent at their ends, are jointed to the holes 27 of the other row, and, preferably, the axis of the header is outwardly offset from the plane of the centre of the tubes 15A. The inner ends of the holes 27, 49 are counterbored at 29 to permit belling of the tube ends upon rolling, and the header is provided with a row of cleaning holes 28 the centre lines of which lie in a plane defined by the axis of the header and the line of intersection of the tube planes. The Specification, as open to inspection under Sect. 91, describes also a construction of soot hopper 32 which extends longitudinally of and is attached to the lower water drum 13 of the generator. As shown in Fig. 4 (Cancelled), the hopper comprises plates 34, 36, 37, welded together, with the plate 34 bolted to a longitudinal bar 35 welded to the drum 13 and the plate 37 connected to the casing plate 38 of the side setting wall 39 by a bolted flange joint 40; moreover the plate 36 is extended horizontally to a position below the drum 13 and is attached to the drum support 30, and both the plates 36, 37 are reinforced by spaced struts 61, 62. The setting wall 39 is supported from the wall tubes 44 by saddles 46 welded thereto. This subjectmatter does not appear in the Specification as accepted.
Patent GB-416058-A (GB)
Title: Improvements in and connected with supports for dishes and other articles for use in dish washing machines
IPC: A47L15/50
Filed: 1933-03-07
Abstract: 416,058. Dish - washing machines. CROSS, W. C., Stanley Road, and PILCHER, W. C., 135, Camden Road, both in Tunbridge Wells, Kent. March 7, 1933, No. 6915. [Class 138 (i).] A machine for washing dishes and like articles comprises a cage mounted for rotation in a receptacle into which washing liquid is to be delivered and into which cage are adapted to be placed independent individually-removable segments each shaped to support articles to be washed, the cage comprising a base secured to a cage-like wall structure and provided with means whereby certain of the segments can be fixed thereto. In the construction shown in Figs. 1 and 2, a rotary base comprises a flanged hub 2, radiating arms 1, a ring 3, and upstanding bolts 4. The outer bolts 4 are connected by rings 6 forming a cage in which may be fitted segments such as 8. These segments, which consist of concentric arcuate bars 13 and radial bars 14 are adapted to hold inverted cups, basins, and like articles, and are supported by the ring 3 and flanges 7 on the arms 1. The bolts 4 are provided with sleeves 5 which form ledges at the top of the bolts to receive upper segments 9, each consisting of arcuate portions 15, 16, connected by radial bars 18. These bars together with supplementary bars 19 form spaces adapted to receive plates placed on edge. The segments 9 may be replaced by segments 9 shown in Figs. 4 and 5, each comprising arcuate portions 16, 24, provided with fingers 22, 23, respectively, which are adapted to receive the rims of saucers or small plates. The portion 24 is adjustable towards or from the portion 16. Each such segment is preferably coupled to a segment 9<a> for receiving inverted cups &c., both segments being connected by vertical bolts 29 provided with sleeves 30. The bolts extend through holes in the corners of the segments and are adapted to receive the ends of U-shaped handles 32, by means of which the segment may be removed from the machine. Specification 415,812 is referred to.
Patent GB-892678-A (GB)
Title: Electrode assembly for electrostatic precipitators
IPC: B03C3/12
Filed: 1960-02-29
Abstract: 892,678. Electrostatic precipitation. AMERICAN AIR FILTER CO. Inc. Feb. 29, 1960 [March 9, 1959], No. 6990/60. Class 39(1) An electrostatic precipitator comprises a plurality of spaced collector plates 8, 9 forming an ionizing zone and a collecting zone and a plurality of ionizing electrodes in the ionizing zone alternating with the collecting plates 9<SP>1</SP> the collector plates 9<SP>1</SP> in the ionizing zone each comprising a portion of some of the collector plates 9 and support means 34 for the ionizing electrodes which is insulated from and extends transverse to the spaced plates: charge plates 8 are interleaved with grounded plates 9 and 8, 9 are spaced and supported from plates 2 by conductive spacer bars 11, and nonconductive spacer bars 12 respectively which pass through clearance holes in plates 8, 9 respectively. Each end of each spacer bar 11 is threaded and is fastened by a nut to one arm of a spider busbar 16 the bus-bars have holes for pegs 17 extending from opposite sides of insulators 18 the other end of pegs 17 engaging in holes in panel 6. Flexible copper terminal strips 19 have a slot 21 at one end to permit limited movement thereof. The spacer bars 12 are threaded at each end and fastened at their ends by nuts to panel 6. The plates 2 have borders 7 and panels 6 integral therewith, the borders 7 acting as shields. Parts 9<SP>1</SP> of grounded plates 9 extend into the ionizing section 4. Extensions 9<SP>1</SP> or similar extensions of electrode plates 8 are collector plates for the ionizer zone, the ionizing electrodes being wires alternating with 9<SP>1</SP> bear drop apertures 32 permit passage of support means for the ionizer wires, comprising U channels extending transversely of the plates through apertures 32. The U channels have rows of slots in each side of the channel and each slot pair receives a resilient U-shaped end portion of a springy ionizing electrode support pin. A pair of channel bus-bars are insulatedly fastened to plates 2 by pegs and insulators, similar to 17, 18, the pegs going to panel 6. The ends of channels 34 have bifurcated tabs engaging with saddles on bus-bar 41. In assembly plates 8, 9 are assembled by a jig and the ionizing wires then assembled by threading channels 34 through apertures 32 and locking them into bus-bars 41. The electrode assembly may be mounted in parallel with other similar electrode assemblies.
Patent GB-1494432-A (GB)
Title: Electroless copper-plating solution
IPC: G03C5/56
Filed: 1975-02-19
Abstract: 1494432 Electroless Cu plating PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 19 Feb 1975 [22 Feb 1974] 6991/75 Heading C7F [Also in Division G2] An aqueous Cu-plating solution comprises cupric ions and the oxidation-reduction pair Fe<SP>2+</SP>/Fe<SP>3+</SP> and an organic phosphonic acid derivative so that the difference between the Cu potential and the oxidation-reduction potential #E is at least 50 mV. The Cu potential is measured between a Cu electrode and a standard calomel electrode, and the redox potentialbetween a Pt electrode and a calomel electrode. The phosphonic acid may be H 2 O 3 PCR 5 R 6 -NR 1 -R 7 -NR 2 -CR 3 R 4 PO 3 H 2  where R 1  ,R 2  are H, alkyl, hydroxyalkyl, methylphosphonic acid or alkylcarboxyl, R 3  to R 6  are H, alkyl of not more than 4C, aryl, aralkyl, or substituted aryl or aralkyl and R 7 =(CH 2 ) n  where 2 # n # 6, or R 8  CR 5  R 6 -NR 2 -CR 3 R 4  R 9  where R 8 , R 9  are -PO 3 H 2  or -COOH, at least one being -PO 3 H 2 , or R-C(OH)(PO 3 H 2 ) 2  where R is alkyl, aryl, or aralkyl. The solution has pH 2-7 and may contain a surfactant, e.g. a quaternany alkylbenzyl or alkyl tolyl ammonium compound in combination with an alkylaryl polyoxyethylene compound, and may contain EDTA, NTA, triethanolamine or pyrocatechol; it may also contain a Cu<SP>+</SP> complexant, e.g. 2-butyne-1,4- diol, acetonitrile, SO 3 <SP>=</SP>, or pyridinium-3-sulphonic acid. In Examples, either (a) a photo-sensitized plastics film (which may be on a glass base) is imagewise exposed and treated with a solution of mercurous nitrate, AgNO 3  and HNO 3  to produce silver amalgam nuclei images, and rinsed in Pb acetate/acetic acid to eliminate fogging, (b) glass plates are treated with SnCl 2  and PdCl 2 , or (c) glass or plastics plates having Ti or Bi oxide coatings are treated with PdCl 2  and imagewise exposed to produce Pd nuclei, then the treated base (a), (b) or (c) is immersed in a solution as defined above to produce an intensified image of Cu.
Patent GB-412349-A (GB)
Title: Improvements in or relating to the manufacture of organic sulphides and plastic compositions therefrom
IPC: C08G75/16
Filed: 1933-03-08
Abstract: Di- or poly-halogenized saturated or unsaturated hydrocarbons containing more than one halogen atom attached to the same or adjacent carbon atoms are reacted with metallic thiosulphates, and the products are then treated by oxidation, reduction, or hydrolysis to produce the sulphides.  Suitable halogen compounds are ethylene dichloride and dibromide, methylene dichloride and dibromide, trimethylene dibromide, isoprene tetrabromide, isoprene dibromide and similar halogen derivatives of butadiene; and suitable thiosulphates are sodium, calcium, potassium and ammonium thiosulphates.  Oxidation may be effected by oxygen, hydrogen peroxide, iodine, or electrolysis; reduction by sodium hydrosulphite or electrolysis; and hydrolysis by dilute sodium hydroxide, ammonia, sodium carbonate, or acids.  In the examples (1) alcoholic ethylene dichloride is boiled under reflux with aqueous sodium thiosulphate and the product is acidified with acetic acid and heated with hydrogen peroxide, yielding a rubber-like product; (2) the thiosulphate product is oxidized with chlorine; the product is substituted for the glue in a rubber mix containing sulphur, zinc oxide, mercapto benzthiazole, stearic acid and carbon black, thereby reducing the swelling of the rubber in benzol; (3) methylene chloride is reacted with sodium thiosulphate and oxidized as in example 2, yielding a similar product; (4) isoprene dibromide in benzene is reacted with aqueous sodium thiosulphate, and the product is acidified and oxidized with hydrogen peroxide; (5) isoprene tetrabromide is substituted for the dibromide in example 4; (6) the ethylene thiosulphate product of example 1 is acidified with hydrochloric acid and oxidized with air or hydrogen peroxide; (7) ethylene dichloride, alcohol, and sodium thiosulphate are heated in an autoclave at 160--180 DEG  C.  The percentage swelling in benzol of rubber compounded with the plastic product is given for each of examples 1--6.ALSO:Organic sulphides of rubber-like consistency are made by reacting di- or poly-halogenized saturated or unsaturated hydrocarbons with metallic thiosulphates, and then treating the products by oxidation, reduction, or hydrolysis.  The products may be substituted for the glue in a rubber mix comprising sulphur, zinc oxide, mercaptobenzthiazole, stearic acid, and carbon black, thereby reducing the swelling of the rubber in benzol.  A number of examples are given, in each case with the percentage swelling in benzol of the rubber when compounded with the product.
Patent GB-708120-A (GB)
Title: Preparation of spinning mixtures
IPC: C08F20/44
Filed: 1951-03-27
Abstract: Acrylonitrile is polymerized alone or together with a minor proportion of one or more ethylenically unsaturated monomers, in the presence of a material which is a plasticizer for the polymer to be formed, such as ethylene carbonate, tetramethylene cyclic sulphone, N-acetyl morpholine, dimethyl formamide, lactones, or lactams, the mixture being emulsified in an inert liquid medium which is a non-solvent for the polymer and which is immiscible or difficulty miscible with the plasticizer, such as the isomeric hexanes, heptanes, and octanes, cyclopentane, cyclohexane, methyl cyclohexane, mono- and di-fluoro pentanes, hexanes, and heptanes, perfluorohexane, perfluorocyclohexane, and perfluorododecane. Ethylenically unsaturated monomers which may also be present are 2-vinylpyridine, 5-ethyl-2-vinylpyridine, 5-vinyl-2-methylpyridine, esters of acrylic and methacrylic acids, styrene, methyl vinyl ketone, and vinyl or vinylidene halides.  Polymerization may be carried out with the aid of catalysts such as benzoyl peroxide, lauryl peroxide, diethyl peroxide, alpha, alpha1-azobis (alpha, gammadimethylvaleronitrile), azobis-dimethylvaleronitrile, and alpha, alpha1-azobis (alpha, gammadimethyl-gamma-methoxyvaleronitrile); the polymerization mixture may also contain starch or "Alkanol" WXN.  The polymerization product is an intimate mixture of polymer and plasticizer in the form of granules which preferably have a solids content of 35-60 per cent., and which may be melt spun into yarns and films.
Patent GB-100495-A (GB)
Title: Improvements in System of Radiotelegraphy for Multiple Simultaneous Transmission.
Inventor: FRANCESCO ROSSO
IPC: H04J1/00
Filed: 1916-05-18
Abstract: 100,495. Rosso, F. May 18, 1915, [Convention date]. Drawings to Specification. Multiplex wireless signalling.-In a multiplex transmission system employing waves of different frequencies and a single antenna, the successive connexions of the various transmitting-keys in the primary circuit, the amount of inductance in the oscillating circuit, and the amount of inductance in the antenna circuit are controlled by commutator switches. The alternator and commutator controlling the primary circuit may be replaced by an alternator having as many phases as there are keys; while, when some of the keys are not used for transmitting, the commutator segments of these keys may be connected to receivers.