baber/WOPTO huggingface dataset:
Patent GB-1379793-A (GB)
Title: Purification of gaseous hydrogen chloride
IPC: C01B7/07
Filed: 1972-05-31
Abstract: 1379793 Removing HF from HCI/HF gas mixtures PENNWALT CORP 31 May 1972 [16 June 1971] 25520/72 Heading C1A HF is removed from an HCl/HF gas mixture by contacting the mixture with anhydrous, solid, particulate CaCl 2 , thereby converting the HF into HCl and the CaCl 2  into CaF 5 . The CaCl 2  may be in pellet form having a size in the range 0À025-0À375 inch or granular with a 4-20 U.S. mesh size. The contact may be at a temp. of 50-120‹ F., a pressure of up to 250 p.s.i.g. and for a period of 20-100 sees. The HCl/HF mixture may contain 0À1-5% by wt. HF and in addition up to 70% by wt. of one or more volatile fluorinated hydrocarbons, such a mixture being formed in the fluorination of chlorinated hydrocarbons with HF.
Patent GB-896986-A (GB)
Title: New cyclopentanophenanthrene compounds and process for their manufacture
IPC: C07J75/00
Filed: 1958-08-08
Abstract: The invention comprises steroids of the formula <FORM:0896986/IV (b)/1> (wherein X is =O or <FORM:0896986/IV (b)/2> Y is hydrogen, chlorine or fluorine, Z is a single or double bond between C-1 and C-2, and R is hydrogen or the acyl group of a hydrocarbon carboxylic acid of at most 12 carbon atoms) and their preparation by dehydrogenating the corresponding D 4-compounds by refluxing (1) with chloranil in xylene to give the D 4,6-compounds, which may then be refluxed with selenium dioxide or with chloranil and n-amyl alcohol to form the D 1,4,6-compounds; or (2) with chloranil and n-amyl alcohol to form the D 1,4,6-compounds; or (3) with selenium dioxide to form the D 1,4-compounds and then refluxing these with chloranil in xylene or n-amylalcohol to form the D 1,4,6-compounds.  Ester products may be saponified and re-esterified.  Examples are given. 6a  - Chloro - 9a  - hydrogen or halo - D 4 - pregnene - 16a ,17a ,21 - triol - 3,11,20 - triones or 16,21-diesters thereof are prepared by oxidizing 16,21-diesters of 9a -Y-D 4-pregnene-11b ,16a ,17a , 21-tetrol-3,20-diones to give the corresponding 11-ketones, converting these to the D 5-3-alkyleneketals, epoxidizing these in the 5a ,6a -position, and reacting the epoxides with hydrochloric acid.  Alternatively the first product of this reaction sequence may be saponified and converted to the 3,20-bis-alkylene-ketal of the D 5-9a -Y-pregnene-16a ,-17a ,21-triol-3,11,20-trione and this reduced to the 11-ol and re-acylated in the 16- and 21-positions, converted to the 5a ,6a -epoxide and reacted with HCl to give the 6a -chloro-9a -Y-D 4-pregnene - 11b ,16a ,17a ,21 - tetrol - 3,20 - diones or 16,21-diesters thereof.  Specification 834,372 is referred to.
Patent GB-884955-A (GB)
Title: Improvements in negative impedance repeaters
IPC: H04B3/18
Filed: 1960-07-22
Abstract: 884,955. Unattended repeaters. STANDARD TELEPHONES & CABLES Ltd. July 22, 1960 [July 24, 1959], No. 25624/60. Class 40 (4). [Also in Group XL (c)] A negative impedance repeater, Fig. 1, comprises a transistor Tr, a transformer T having a primary winding T connected in a line circuit and two secondary windings S1, S2, one of which is coupled to the emitter and the other to the collector of the transistor so as to provide voltage negative feedback, and means for providing positive current feedback to the base of the transistor from the transformer primary. Power supplies for the circuit are connected to the terminals + and -. In a modification, Fig. 2, the D.C. supply for the repeater is fed over the line L from a distant point as by a battery B. The voltage drop across a Zener diode provides the operating potential for the repeater, the primary winding of the transformer being split into two parts P1 and P2. The positive feedback to the base is provided from a resistor FR and a second transformer may be included to increase the magnitude of feedback. The transformer may be an auto-transformer, Fig. 3 (not shown), or may comprise two individual windings. If a transformer is used the resistor FR may be omitted or may be connected instead across the secondary winding of the transformer. In a further embodiment, Fig. 4 (not shown), the transformer has two primary windings and four secondary windings, two transistors being connected to the secondaries in a Class B push-pull arrangement to reduce the quiescent state power consumption.
Patent GB-952073-A (GB)
Title: A drive for use in a counter of electrical impulses
IPC: H02K37/24
Filed: 1960-07-22
Abstract: 952,073. Electromagnetic brakes. RINGSDORFF-WERKE G.m.b.H. July 22, 1960 [July 23, 1959], No. 25696/60. Heading F2E. A drive for an electromagnetic counter of electrical impulses includes an electromagnet stator member 2 forming a frame, the side portions 2b of which being provided with bearings 6 which carry a rotor member 1 mounted on a shaft 10 and a braking means for braking the rotor. The bearings 6 are preferably of sintered material which is impregnated with low viscosity oil such that when the field windings 2c are energized the rotor element 1 is magnetically driven in the direction of the arrow (Fig. 2) so that a rotor pole face 3a moves into the tapered air gap 4 from a region of lesser magnetic flux intensity to a region of greater magnetic flux intensity. The radial pressure exerted on the bearings will cause a breakdown of the lubrication film so that a condition of semidry friction causes braking of the rotor element 1. A bending moment is applied to the shaft 1 by the magnetic flux intensity to cause a rotor pole face 3a to be brought into frictional contact with a stator pole face 2a. Another embodiment is disclosed wherein the air gaps 7 between the side faces of the rotor 1 and the side portions 2b are unequal thus resulting in a greater magnetic flux intensity being applied on one side of the rotor to move the rotor axially into frictional contact with the adjacent bearing 6.
Patent GB-680128-A (GB)
Title: Improvements in or relating to the manufacture of phenthiazine derivatives
Inventor: BERG SAMUEL SIDNEY
Filed: 1949-10-06
Abstract: A process for the manufacture of 10-dialkyl-aminoalkyl-phenthiazines comprises reacting a dialkylaminoalkyl halide with a complex formed by reacting phenthiazine or a substituted phenthiazine with a Grignard reagent and having the formula P.Mg.X, where P represents the phenthiazine nucleus and X represents a halogen atom.  Preferred compounds are those containing as substituent in the 10-position a straight or branched chain (CR1R2)n-N-(R3)2 where R1 and R2 are the same or different and represent hydrogen or methyl, R3 represents methyl or ethyl and n is 2 or 3, such that the grouping (CR1R2)n in which the successive groups may be alike or different contains not more than 3 carbon atoms) and in which the phenthiazine ring may be substituted by a methoxy group in the 3-position, i.e. meta to the sulphur atom.  The Grignard reagent may be alkyl, aryl or aralkyl, provided that it will give with the phenthiazine a complex of the type P.Mg.X, where P is the phenthiazine nucleus and X is a halogen atom.  Reference is made to Specification 608,208.
Patent GB-751928-A (GB)
Title: Separation of salts from the circulating working media of turbine power plants which operate at critical or supercritical pressure
IPC: F22D11/00
Filed: 1954-09-07
Abstract: 751,928. Turbines. SULZER FRERES SOC. ANON. Sept. 7, 1954 [Sept. 19, 1953], No. 25891/54. Class 110(3) To remove salts in the working medium of a power plant in which the working medium is vaporized at critical or supercritical pressure, the working medium at critical or supercritical pressure and at critical or supercritical temperature is expanded in a turbine or turbine stage to a sub-critical pressure, then cooled by transferring heat to another part of the working medium until it is in the wet state, and then passed through a separator to remove salts and liquid working medium after which it is passed through an intermediate superheater into the next turbine or turbine stage. Feed water is supplied to the forced circulation boiler 5 where it is converted into steam at supercritical pressure through preheaters 2, 3, and a contra-flow preheater 4. The steam is superheated in the superheater 6 and then expanded in the turbine T, to a sub-critical pressure. The exhaust of the turbine T, is then cooled in the contra-flow preheater 4 by the feed water and further cooled by injecting feed water tapped from an intermediate stage of the feed pump at the point E until the steam has a dryness fraction of approximately 0.95. The steam is then passed into a centrifugal separator 7 in which the water together with salts and other impurities are removed. The steam is then reheated in the intermediate superheater 9 and expanded in the turbine T2. The exhaust of the turbine T2 is reheated at 10 and then expanded in the turbine T3.
Patent GB-243687-A (GB)
Title: A new or improved device for attaching handles to articles
IPC: B25G3/30
Filed: 1925-10-17
Abstract: 243,687. Trannoy, M. E. M., (Assignee of Etablissements S. Martinache). Nov. 26, 1924, [Convention date]. Fixing by screwed sockets. - Handles are secured to brooms &c. by a socket 1 of truncated conical shape, threaded inside at 2 and outside at 3, and having openings 4 of any shape passing entirely through the socket walls, the edges of these openings forming cutting teeth assisting the socket threads to bite into the handle and stock. The threads are separated by flat spaces 5.
Patent GB-204212-A (GB)
Title: Improvements relating to stair carpet retaining devices
IPC: A47G27/06
Filed: 1922-09-27
Abstract: 204,212. Johnson, F. A. L. Sept. 27, 1922. Stair rods and stair-rod fastenings.-Fastenings adapted for use with long or short stair rods, consist of a short rod 10 with one end forming a wood screw 10<b> while, the other end is slotted and carries a pivoted slotted link 11. Stair rods for use with these fastenings are provided with a hole 8<a> through which the link can pass when turned to lie in the axis of the screwed rod; the link may then be turned to secure the stair rod, and is kept from sliding in its horizontal position by the engagement of a notch 11<a> in its slot with the securing pin 12.
Patent GB-695214-A (GB)
Title: Improvements in, and relating to, a process for washing out ammonia and hydrogen sulphide from gases containing carbon dioxide, especially coal-distillation gases
IPC: C10K1/10
Filed: 1950-10-26
Abstract: 695,214. Washing gases. COLLIN AKT.-GES., F. J. Oct. 26, 1950 [April 12, 1949], No. 26143/50. Class 55(ii) Ammonia and hydrogen sulphide are washed from gases also containing carbon dioxide by passing the gas at high velocity through a first zone into which water or weakly ammoniacal gas condensate is atomized, the greater part of the ammonia and about 50 to 60 per cent of the hydrogen sulphide, but owing to the short gas-liquid contact time, very little of the carbon dioxide, being absorbed and then passing the gas through a second zone wherein a turbulent washing, for example, in a bubbling device, occurs, the residual ammonia combining with the carbonic acid formed by absorption of carbon dioxide in this zone. The apparatus consists of a washer 1 divided into four sections a, b, c and d. The lower sections a, b and c each have an atomizing nozzle 2 through which liquor from the section above is atomized into the gas which enters at 3 and passes up through sections a, band c at a velocity of about 3 metres per second. After absorption of most of the ammonia and hydrogen sulphide, the gas passes into section d through a bubbling hood, the turbulent contact with the liquid in this section causing absorption of residual ammonia and the carbon dioxide.
Patent GB-1427618-A (GB)
Title: Multipoint product filling machine
IPC: A23G3/20
Filed: 1973-06-01
Abstract: 1427618 Apparatus for filling articles with flowable material D C A INDUSTRIES Ltd 15 March 1974 [1 June 1973] 26210/73 Heading A2A An apparatus for filling products, for example, doughnuts with jam, custard, cream or other flowable material, comprises a wheeled frame 1 which supports a conveyor on which previously cooked, but unfilled, doughnuts can be advanced to a filling position. The conveyor includes a pair of spaced endless chains between which are arranged a plurality of article conveying members 4 in the form of slats. Each slat 4 has a plurality of recesses 5 in which ring doughnuts are supported. The conveyor is advanced intermittently by reciprocation of a piston in the cylinder of an air motor. A filling head straddles the conveyor at the filling station. The filling head includes a carriage 11 which is connected with piston rods 12 of two air pressure motors so that movement of the piston rods 12 raises and lowers the carriage 11. The carriage 11 also supports a plurality of rings of injector needles or nozzles 14. A row of filling plungers 15 each one of which is operable to supply jam to one injector means in the form of a ring of injector needles or nozzles 14 is also present, each plunger being operated by its own individual air motor 16. Each plunger is provided with a sensor which includes a ring 34 which surrounds the injector nozzles or needles 14. Each sensor ring is carried by an operating lever 35 which is loaded by a spring 36 to maintain the sensor rings in their lowermost positions. If a doughnut is present in a recess 5 of a slat 4 which has been advanced to the filling station, the lever 35 will be pivoted upwards as the carriage 11 is lowered. If no doughnut is present the lever will not be pivoted. The air motors 16 to drive the plungers 15 will not be energised unless a switch 37 is actuated by pivotal movement of the sensor ring 34.
Patent GB-1385460-A (GB)
Title: Room temperature vulcanisable silicone elastomer
IPC: C09K3/10
Filed: 1973-06-01
Abstract: 1385460 RTV silicone rubber compositions DOW CORNING CORP 1 June 1973 [29 Sept 1972] 26227/73 Headings C3S and C3T An RTV silicone elastomer-forming composition comprises (A) 100 p.b.w. hydroxy-terminated polydiorganosiloxane of viscosity 70- 50,000 cs./25‹ C. in which the organic groups are no more than 50% phenyl or trifluoropropyl and no more than 10% vinyl, the remainder being methyl or ethyl, (B) 0-150 p.b.w. non- acidic non-reinforcing filler, (C) 2-20 p.b.w. amidosilane R(CH 3 )Si(NR<SP>1</SP>-CO-CH 3 ) 2  in which R is CH 3 , CH 2  = CH or C 6 H 5  and R<SP>1</SP> is CH 3 , C 2 H 5  or C 6 H 5 , and (D) 0À25-7 p.b.w. of aminoxysilicon compound having 1-100 Si atoms and 3-10 aminoxy groups per molecule bound to Si, all remaining Si valences being satisfied by siloxane linkages and hydrocarbon or halohydrocarbon radicals, in numbers of at least one per Si atom on average, the compound (D) not exceeding the weight of (C) and not exceeding 3 p.b.w. when (A) is of viscosity 8000 cs/25‹ C. or less. For one-pack compositions there are preferably used 5-20 p.b.w. (C) providing at least one mole of silane per silanol group in (A); for two-part packs 2-5 p.b.w. of (C) are used, added to either the pack containing (A) or that containing (B). For use in the examples compounds (C) are prepared from Me 2 SiCl 2  or MeViSiCl 2  and Na(Me)N.CO.CH 3  and compounds (D) from Et 2 NOH and [MeHSiO] 3 [C 8 H 17 (Me)SiO], Me 3 SiO[MeHSiO] 5 [Me 2 SiO] 3 SiMe 3 , Me 2 HSiO[MeHSiO] 3 [Me 2 SiO] 5 SiHMe 2  or MeSiCl 3 . In the Examples compositions are prepared from 100 p.b.w. polydimethylsiloxane diol of viscosity 2200-12,500 cS./25‹ C. and 40-125 p.b.w. of CaCO 3 , optionally dried, and 5-8 p.b.w. of a compound (C) and 0À6-6 p.b.w. of a compound (D); when a polysiloxane of 80 cS./ 25‹ C. is used, 12-14 p.b.w. of (C) are used; in some cases they are prepared via intermediate compositions of the polysiloxane (A) and CaCO 3  (B), compounds (C) being added to this or to (D) before final mixing. Uses.-Sealants.
Patent GB-502747-A (GB)
Title: Improvements in or relating to the synchronising of internal combustion engines
IPC: F02D25/02
Filed: 1937-09-28
Abstract: 502,747. Plant; ignition systems. WOODMAN, C. K. Sept. 28,1937, No. 26244. Convention date, Sept. 28, 1936. [Classes 7 (ii) and 7 (iv)] Synchronism of two engines-is maintained by interchanging the make-and-break devices of the ignition systems. A four-pole switch 47 permits eitherof the breakers 23, 43 to be in circuit with the primary windings of either of the coils 16, 36.
Patent GB-186619-A (GB)
Title: Apparatus for directly measuring self inductions and values derived therefrom as well as capacities
IPC: G01R27/26
Filed: 1922-09-28
Abstract: 186,619. Compagnie pour la Fabrication des Compteurs et MatÚriel d'Usines Ó Gaz, (Assignees of Compagnie GÚnÚrale de Mesures). Oct. 1, 1921, [Convention date]. Commutator switching-arrangements.-In apparatus for measuring capacities, inductances &c., the potential difference across an element of a circuit including a rotary alternating-current generator and capacities, inductances and resistances. or the current in the circuit, is measured by a direct-current instrument after rectification by a synchronous commutator keyed to the shaft of the generator and comprising brushes 7, 8 connected to the circuit directly or through an inductance 17, the brushes contacting with conducting parts 4, 5 separated by insulation 6.
Patent GB-151272-A (GB)
Title: Improvements in carburettors
IPC: F02M17/14
Filed: 1920-09-13
Abstract: 151,272. Fromont, G. Sept. 17, 1919, [Convention date]. Spray carburettors.-Fuel and air are admitted in layers to a floatless spray carburettor by suction-actuated needle and tilting disk valves the opening of which can be manually regulated, and the mixture is heated by exhaust gases passing through tubing in the mixing-chamber or outlet passage. Air enters the base of the mixing- chamber a<1> through ports e<1> in a disk c secured by a nut b and forming a seat for the air valve c which actuates through a shoulder f<1> the conical fuel valve f<3>, the spindle f of which passes through a guide h and is loaded by a spring f<5>. The air valve is pressed to its seat and caused to lift obliquely by a spring d<1> surrounding a bolt d<2> near the periphery of the valve. The lift of the valves, which is small so as to produce laminated streams of air and fuel, is regulated by a disk k<1> carried by a pin k which passes through helical slots a<5> in the wall a<2>, and is rigidly secured to a sleeve k<3>, rotation of which causes the disk to rise or fall. The mixture is heated bv exhaust gases passing through a pipe m extending across the mixing chamber. In a modification, the valve c is provided with an upstanding flange which further facilitates mixing and permits of a reduction in the size of the mixing chamber. The Specification as open to inspection under Sect. 91 (3) (a) describes a helical heating-coil in the upper part of the mixing-chamber, and states' that the fuel, when heavy, mav be heated electrically at starting. This subject-matter does not appear in the Specification as accepted.
Patent GB-243150-A (GB)
Title: Improvements in liquid level gauges
IPC: G01F23/16
Filed: 1924-11-05
Abstract: 243,150. Higginson, J. Nov. 5, 1924. Indicators actuated by pressure of head of liquid.-A liquid-level indicator for petrol tanks wherefrom the fuel is withdrawn by a vacuum feed, comprises a small chamber disposed at the base of the pipe supplying fuel to the vacuum system, with a restricted fuel inlet from the tank and an air supply connection extending to a point between the top and bottom and above the inlet to the fuel outlet tube so as to have an air space above it. The head of fuel in the tank b causes a corresponding air pressure in a gauge pipe i. When a high degree of suction withdraws fuel from the chamber more quickly than it enters by the restricted inlet c air enters by a pipe h open to the atmosphere, to maintain the air charge. To minimize any inflow of air into the fuel pipe e the orifice c is preferably positioned immediately beneath the fuel pipe. The three pipes may be connected to a common cap k secured to the fuel tank.
Patent GB-1004285-A (GB)
Title: Procedures and compositions for treatment of farinaceous materials
IPC: A21D2/08
Filed: 1962-07-10
Abstract: 1,004,285. Maturing and bleaching flours, doughs and baking powders. WALLACE & TIERMAN Inc. July 10, 1962 [July 10, 1961], No. 26476/62. Headings A2B and A2Q. In maturing and bleaching farinaceous material, such as cereal flour, flourcontaining baking powder, aqueous dough, batter or sponge mixture used for making bread or like baked products, the farinaceous material is mixed with a composition comprising a normally water-insoluble organic peroxide and a solubilizing agent, which imparts water-solubility to the peroxide. Specified organic peroxides are: cyclohexanone peroxide, benzoyl peroxide and polymeric methyl ethyl ketone peroxide. The solubilizing agent may be a water-miscible, polar organic liquid, e.g. containing only carbon, hydrogen and oxygen atoms and having a vapour pressure not exceeding that of water, at a temperature between 50 and 120F. Specified solubilizing agents are: mesityl oxide, triacetin, dibutyl phthalate and dimethyl phthalate. The composition may comprise one or more than one dry, finely powdered solid carrier, such as flour, maize starch, potash alum, calcium carbonate, calcium phosphate and yeast food salts including sodium chloride, calcium sulphate and ammonium sulphate. Between 1g. and 20g. of the organic peroxide may be mixed with each 1001b. of farinaceous material.
Patent GB-382998-A (GB)
Title: Improvements relating to portable lifting jacks
IPC: B66F5/02
Filed: 1931-09-23
Abstract: 382,998. Lifting-jacks. PARNALL, G. G. and CLARKE, H. V., Coliseum Works, Park Row, Bristol. Sept. 23, 1931, No. 26509. [Class 78 (iii).] Means are provided on a portable lifting jack for adjusting the road wheels, which support the jack during transport, so as to move them out of contact with the ground, the load on the jack then being supported by shoes. As shown, the road wheels 15 are mounted on the cranked ends 14a of an axle 14 which is supported by legs 11 on a frame 3 and provided with a crank 14c carrying a pivotally mounted nut 14d engaging the screwed end of a rod 16. When the jack has been placed in position, a handle 18 is operated so as to rotate the rod 16 and thereby partially rotate the axle 14 and lift the wheels 15. The jack is then supported by the shoes 12 provided with tracks for rollers 13 on the legs 11. The lifting arm 7, carrying the pivoted crutch 8, is raised by a roller 9a on a threaded ram 9 engaging its lower end, the ram being moved by fluid pressure supplied from a reciprocating oil pump 22 operated by a handle 27. The pump piston 22a is connected to a duplex lever 23 which is pivoted to a member 24, rotatable about the piston, and to links 25 pivoted to a nut 26 engaging a thread on the handle 27. The mechanical advantage of the handle 27 may be varied by rotating it about its axis so as to move the nut 26. A nut 10 on the ram 9 abuts the frame 3 so as to support the load and minimize any tendency for leakage of oil past the ram. Castor wheels 19 are carried by a yoke 20, pivotally mounted on a pin 21 projecting from the frame 3.
Patent GB-347563-A (GB)
Title: Improvements in or relating to valves for controlling the flow of fluids
IPC: F16K15/06
Filed: 1930-09-05
Abstract: 347,563. Fluid - actuated valves. JENKINS BROS., Ltd., 617, St. Remi Street, Montreal, Canada.-(Assignees of Yardley, F. ; Llewellyn Park, West Orange, New Jersey, U.S.A.) Sept. 5, 1930, No. 26560. Convention date, Oct. 5, 1929. [Class 135.] Check lift valves.-A check lift valve, particularly a foot valve for a pump, is provided with guide vanes 8 below and a guiding stem 9 above, the latter guided in a floating guide plate 12 held in frictional engagement with the upper part 6 of the casing by a spring 11, as shown, surrounding the stem so as to allow lateral movement in the casing. The closure member may comprise a conical washer 10 and the lower part of the casing may be fitted with a strainer, as shown.