baber/WOPTO huggingface dataset:
Patent GB-1047541-A (GB)
Title: Improvements in or relating to í¸ -a-homo-estratrien-4-ones
IPC: A61K31/565
Filed: 1964-01-22
Abstract: Novel compounds of the formulae <FORM:1047541/C2/1> (wherein R is hydrogen or hydrocarbon carboxylic acyl of less than 12 carbon atoms which is optionally substituted and R1 is hydrogen or C1- 8 alkyl, C2- 8 alkenyl or C2- 8 alkynyl) are prepared by treating a 2,3-dihalomethylene-3-C1- 8 alkoxy - D 5(10) - estren - 17 - one or a corresponding 17-b -ol (which may contain a 17a  - alkyl, - alkenyl or - alkynyl group) prepared therefrom by standard procedures with a silver salt soluble in water in an organic solvent miscible with water and conveniently in the presence of water and, if desired, acylating the product when a 17-b -ol. 2,3 - Dihalomethylene - 3 - C1- 8 alkoxy - D 5(10)-estren-17-ones prepared by converting estrone 3-alkyl ethers to their 17-cycloethylene ketals, treating these with lithium in liquid ammonia to produce 17 - cycloethylenedioxy - 3 - alkoxy-D 2,5(10) - estradienes, treating these with dihalocarbons obtained by thermal decomposition of the sodium salts of monochlorodifluoro acetic and trichloro acetic acids or of bromoform in the presence of potassium t-butoxide and hydrolysing the ketal group of the obtained 2,3 - dihalomethylene - 17 - cycloethylenedioxy-3 - alkoxy - D 5(10)- estrenes.
Patent GB-1500422-A (GB)
Title: Protection circuit for a television display device
IPC: H03K4/08
Filed: 1975-01-22
Abstract: 1500422 Line deflection circuits for TV receivers indicating circuit failure RCA CORPORATION 22 Jan 1975 [31 Jan 1974] 2803/75 Headings H3T and H4T [Also in Division H2] A combined line deflection circuit and high voltage generator, of the type described in Specification 1,260,375 for a TV receiver, is protected against excess voltage by utilizing as the trace diode 43 a single component, such as an integrated thyristor rectifier, having different breakdown voltages in opposite directions. The circuit thus has advantage over arrangements in which a separate over-voltage protection component is employed in that failure of the combined component (or its removal from the receiver) is readily noticed by incorrect operation of the circuit. As described, the integrated thyristor rectifier 42 has the characteristics of a fast recovery diode 43 in parallel opposition with a zero-gate-current SCR42. At the beginning of each trace interval, diode 43 is forward biased and passes a linearly decreasing current through the horizontal deflection windings 50 to charge capacitor 61. The trace SCR41 is triggered shortly before the zero crossing of the current in windings 50 and becomes conductive when diode 43 becomes reverse biased. Eight microseconds before the end of the trace, the commutating SCR11 is gated on so that capacitors 33 and 35 begin to discharge through it, turning off SCR41 and initiating the retrace interval. Capacitor 33, S-shaping capacitor 61, windings 50 and capacitor 71 now execute a half cycle of flyback. At the end of the retrace interval the negative voltage at point A causes conduction of the trace diode 43 and initiates a further sweep. If the voltage at A becomes excessive due to high line voltage or to a faulty component, SCR42 of the integrated thyristor rectifier 40 breaks down and prevents X- radiation. This action disrupts the deflection current so that the fault is made apparent to the viewer.
Patent GB-493589-A (GB)
Title: Improvements in or relating to needle beds of circular knitting machines
IPC: D04B15/14
Filed: 1938-01-28
Abstract: 493,589. Knitting-machines. HEMPHILL CO. Jan. 28, 1938, No. 2828. Convention date, Feb. 9. [Class 74 (ii)] Strip elements inserted in the cylinder shell of a circular knitting - machine guide both the needles and the sinkers. The sinker-guiding part 9 is offset at 21 from the needle - guiding part 8, and may be thicker than the part 8 ; it may be thickened by turning the edge over and rolling, by swaging, by attaching a separate part thereto or, as shown, by corrugating, the corrugations A being greatest at the outer edge and fading to nothing at the inner edge. Each strip is held in a slot 22 in the fabric-guiding ring, a slot B in a recess-18- engaging part 19 and a slot 7 in the shell. Nibs 12 accommodate needle-and-jack-retaining springs. On projections 13 is bolted the sinkersupporting ring 14. The stitch-forming edge 32 and the nib 33 of the sinker are thinner than the sinker body. Lint is pushed by the sinkers between the parts 9.
Patent GB-705274-A (GB)
Title: Nylon crepe fabric and yarn
IPC: D06Q1/02
Filed: 1951-02-05
Abstract: A creped nylon yarn or fabric is obtained by subjecting a yarn comprising nylon combined with silk, or a fabric made of such yarn, to treatment with boiling water to shrink the silk and thereby impart a crimp to the nylon, then, if necessary, heat setting the nylon in its crimped position by treatment with, for example, wet steam at a temperature above 212 DEG F, then dissolving the silk by treatment with hot caustic alkali solution and finally neutralizing with an acid bath.
Patent GB-825706-A (GB)
Title: Improvements relating to means for cleaning conveyor belts
Inventor: LEACH ALBERT
IPC: B65G45/12
Filed: 1956-01-28
Abstract: 825,706. Conveyer belt cleaning devices. SIMON-CARVES Ltd. Feb. 22, 1957 [Jan. 28, 1956], No. 2838/56. Class 78 (1). A conveyer belt 1 is cleaned by a device consisting of a pair of side plates 3 between hooks 15 on which are stretched a number of piano wires 14, the plates 3 being pivoted at 4 on the ends of levers 5 secured to a shaft 7 which is acted on by a spring 8 through a lever 6 to press the wires 14 against the belt. Reference has been directed by the Comptroller to Specification 770,203.
Patent GB-1390866-A (GB)
Title: Cycloalkanoyl-substituted pyrroles and pharmaceutical compo sitions containing them
IPC: C07D207/337
Filed: 1973-01-19
Abstract: 1390866 Cycloalkanoyl-substituted pyrroles McNEIL LABORATORIES Inc 19 Jan 1973 [21 Jan 1972 (2)] 2854/73 Heading C2C The invention comprises a 5-cycloalkanoylpyrrole of formula wherein R 4  is benzyl or n being an integer of 1 or 2; R is a hydrogen atom or a C 1-5  alkyl group; R 1  and R 2  are each a hydrogen atom or a methyl group; and R 3  is -COOH or a -COO (C 1-5  alkyl), provided that when said R 2  is a methyl group, the said R is a C 1-5  alkyl group. This compound may be prepared by (a) reacting a compound of formula R 4 COCI with a compound of formula wherein R<SP>1</SP> is a -COO (C 1-5  alkyl) group, in the presence of of a Lewis acid and a suitable solvent to obtain a compound of Formula IV or (b) subjecting a compound of Formula V, prepared according to method (a) to C-methylation according to standard techniques to yield a compound of formula or (c) (i) subjecting a compound of formula to conventional N-alkylation to prepare a compound of formula and optionally (ii) subjecting the compound prepared according to step (i) to conventional C-methylation to prepare a compound of formula and (iii) subjecting any of the aforementioned resultant compounds from steps (i) and (ii) to conventional hydrolysis to prepare a compound of formula or (d) esterifying a compound of formula with a lower alkanol by standard techniques to prepare a compound of formula in all the formulae referred to in steps (a) to (d), R, R 1 , R 2 , R 3  and R 4  are as defined above. The following intermediates are prepared in the examples: 5 - cylohexyl carbonyl - 1 -methylpyrrole - 2 - acetonitrile by the reaction of cyclohexylcarbonyl chloride with 1-methylpyrrole- 2-acetonitrile, Expl. (IA); 5-cyclopentylcarbonyl- 1 - methylpyrrole - 2 - acetonitrile Expl. (IB); 5 - cyclohexylcarbonyl - 1,α - dimethylpyrrole- 2-acetonitrile by the reaction of 5-cyclohexylcarbonyl - 1 - methylpyrrole - 2 - acetonitrile with CH 3 I, Expl. VI A: 5-cyclohexylcarbonyl- 1 - methylpyrrole - 2 - acetamide prepared by hydrolysing 5 - cyclohexylcarbonyl - 1 - methylpyrrole - 2 - acetonitrile, Expl. (VII); cyclohexanoyl-pyrrole-2-acetonitrile by the reaction of cyclohexanoyl chloride with pyrrole-2- acetonitrile, Expl. (IX); 5-cyclohexanoyl- 1 - ethylpyrrole - 2 - acetonitrile, Expl. (X); 1- methyl - 5 phenylacetylpyrrole - 2 - acetonitrile by the reaction of phenyl acetyl chloride with N- methylpyrrole - 2 -acetonitrile. The invention also comprises a pharmaceutical composition which contains as an active ingredient a compound according to the invention together with an inert diluent or carrier.
Patent GB-164075-A (GB)
Title: Means for setting eyelets
IPC: A43D100/02
Filed: 1920-01-30
Abstract: 164,075. Fairweather, W., (Singer Manufacturing Co.). Jan. 30, 1920. Setting eyelets. - The setting-device of a machine having a punch and an anvil is arranged concentrically, and works telescopically, on the anvil. A duplex arrangement is shown in which each cutting edge of a stationary punch, Fig. 3, with bevel 2 and clenching surface 1 co-operates with an anvil 3, Fig. 5, adjustably secured by a lock-nut 9 to a slide 3<1>, and a setting-device 6 with clenching surface 7 is telescopically arranged around the anvil and adjustably secured by locknut 10 to a slide 8. Spring fingers 4, Fig. 1, strip the work from the punches after punching, and the eyelets taken from raceways by the anvils are forced by the anvils over the bevel surfaces 1 of the punches and then clenched. Clamps 5 hold the work during operation.
Patent GB-711645-A (GB)
Title: Improvements in and relating to furnaces for pulverised fuel
IPC: F23C99/00
Filed: 1952-02-05
Abstract: 711,645. Pulverulent-fuel furnaces. WALTHER & CIE AKT.-GES. Feb. 5, 1952 [Feb. 5, 1951], No. 3022/52. Class 51 (1) A pulverulent-fuel furnace is characterized by the provision of one or more ignition chambers arranged alongside of, and substantially parallel to, the combustion chamber. As shown in Figs. 1 and 2 the combustion chamber 10 has in its four corners ignition chambers 14 provided with burners 16. Air is supplied through nozzles 17, 21 and 22. The flow of fuel and air through the ignition chambers is in the opposite direction to the flow through the chamber 10. Slag deposited on surfaces 18 drips down to an outlet funnel 20. In modifications the ignition chambers extend along two or more walls of the chamber 10.
Patent GB-918336-A (GB)
Title: Electronic commutator apparatus
IPC: H03K23/00
Filed: 1960-01-28
Abstract: 918,336. Transistor multi-stable circuits. INTERNATIONAL BUSINESS MACHINES CORPORATION. Jan. 28, 1960 [Jan. 28, 1959], No. 3060/60. Class 40 (6). [Also in Group XIX] An electronic commutator comprises three bi-stable devices arranged to assume in response to successive input pulses the respective conditions 1,1,0; 1,0,1; 0, 1, 1 and three " and " gates connected each to two of the bi-stable devices, the " and " gates being opened sequentially to supply outputs on output lines connected thereto. As described, a commutator comprises five bistable transistor stages A-E, Figs. 1 and 2, outputs from the stages being connected in pairs to " and " gates connected to outputs 0-9, Fig. 2. Each number 0-9 is represented by two of the stages A-E being "on," the switching sequence being as shown in Fig. 1. The bi-stable stages A-E each comprise two pairs T1, T2, and T3, T4 of transistors, a stage in the " off " state having the transistor T1 conducting, T2 cut off and T3 in a less conductive condition than T4, the states of T1, T2 and T3, T4 being reversed for the "or " state. Assuming the commutator to represent 0, i.e. the stages A and E to be " on " the next input pulse applied at terminal 25 to all the stages A-E, has no effect on the stages C-E, but causes the stage A to be turned " off," terminals 1a, 6a of a gate G2 associated with the stage A being maintained at earth potential by connection to terminals 13d, 13b of stages D, B, respectively, thereby allowing the input pulse to turn off the transistor T2 of the stage A. In stage A, the turning off of the transistor T2 causes a negative potential shift at the base of the transistor T4 which is thereby rendered more conductive, the resulting negative potential shift at the emitter of the transistor T4 being applied via an R.C. network to turn on the transistor T1, the transistor T3 thereby becoming less conductive to complete the stage switching. The potential change at the terminal 13a of a gate G1 associated with the stage A results in a pulse applied to the terminal 3b of a gate G1 of the stage B, which pulse turns off the transistor T1 of the stage B to initiate switching of the stage B. With the stage A now " off, " zero potential is applied to the terminal 6e of the gate G2 of the stage E so that the next input pulse switches the stage E " off," thereby causing the stage A to be switched " on " again.
Patent GB-555915-A (GB)
Title: Improvements in or relating to hydraulic systems
IPC: B64C11/42
Filed: 1942-03-09
Abstract: 555,915. Hydraulic control systems ; valves; variable pitch propellers. BOAST, J. E., and DALES, C. R. March 9, 1942, No. 3095. [Classes 69 (ii) and t351 [Also in Group XXXIII] To ensure the actuation of hydraulic devices, such as a hydraulically operated variable-pitch propeller used on aircraft, at temperatures which change the viscosity of the working liquid to an undesirable extent, a thermally-controlled byepass valve is arranged to open on a change of temperature to permit flow of the liquid through the region subject to temperature change. The valve employed is preferably constructed as a screwed plug 14 with an axial bore leading to a radial bore 16 closed at normal temperatures by an extension 19 of a valve member controlled by a bimetallic strip 20 wound in helical form and anchored at the end remote from the extension 19 to a collar 23 which is adjustably secured to the threaded end 26 of the valve spindle by means of a nut 25. As shown in Fig. 5, the valve is arranged to permit flow of liquid between the two faces of a fixed piston 33 fixed to the shaft 33 of a propeller and with which co-operates a movable cylinder 34 coupled by rods and links 35 to each of the blades to adjust their pitch under control of a valve 42 operated by a governor 43 driven from the engine. The valve is arranged in the part of the chamber 37 most subject to low temperature and is accessible for adjustment. When the valve opens cold oil passes from the chamber 37 and the consequent change in pitch of the blades causes the governor-controlled valve to open and replace the cold oil by warm oil. The invention may be applied to other forms of hydraulic mechanisms, and other forms of valve may be used such as a rotary valve controlled by an axially twisted bimetallic strip which varies the valve angle.
Patent GB-588279-A (GB)
Title: An improved machinery guard
IPC: F16P1/02
Filed: 1945-02-07
Abstract: 588,279. Machinery guards. BRITISH INSULATED CABLES, Ltd., and ANTWIS, J. F. Feb. 7, 1945, No. 3125. [Class 80 (iv)] A guard for a drilling &c. machine comprises a helical spring 2 with one end carried by adjustable supporting members 9, 11, attached to a clamping ring 5 on a part 3 of the machine which reciprocates but does not rotate. Also attached to the supporting members by lugs 21 engaging over studs 23 is a frame 19 having a wire mesh 20 acting as a guard for the chuck 4. In a modification, the lower end of the spring is tapered.
Patent GB-358836-A (GB)
Title: Improvements relating to looms for weaving pile fabrics
IPC: D03D27/06
Filed: 1931-01-31
Abstract: 358,836. Pile-fabric looms. MANUFACTURES DE VELOURS ET PELUCHES 55, Chemin de Baraban, Lyons, France. Jan. 31, 1931, No. 3138. Convention date, Dec. 16, 1930. [Class 142 (ii).] In looms for weaving velvets and plushes the pile warp n is looped over " pile " wefts inserted by a shuttle m which is picked on a shuttle race l under stationary blades a mounted on a bar b and extending through the healds and reed. Ground wefts, which may differ from one another, are inserted above the blades by one or more shuttles k travelling on the warps above these blades. The pile warps are moved to three different positions x, y, z, Figs. 6 and 7, so as to form loops over the " pile " wefts, which are spaced from the ground of the fabric by the blades a. The fabric is woven face downwards and is guided by bars g, h and wound up on a roller i. The " pile " weft may remain in or be removed from the fabric. The velvet may be patterned or have a patterned ground. The various shuttles are inserted from charge boxes, and an upper and lower shuttle may be picked simultaneously.
Patent GB-431037-A (GB)
Title: An improved method of and means for purifying steam
IPC: F22B37/26
Filed: 1935-01-31
Abstract: 431,037. Heating feedwater. LEWERS, W. H., 47, Victoria Street, London.-(Superheater Co. ; 60, East 42nd Street, New York, U.S.A.) Jan. 31, 1935, No. 3200. [Class 64 (i)] [See also Group XII] To deconcentrate or purify boiler steam by passing it through comparatively clean feedwater in a drum 18, as described in Specifications 408,912, 410,036, and 410,037, the steam is led through a pipe 16a into a longitudinal pipe 25 formed with slots 25<a> and arranged beneath inclined submerged perforated plates 24. The feedwater flows into the space beneath the perforated plates from pipes 40 leading from the inlet trough 39, and after passing through the plates it flows over a plate 28 into the outlet pipe 42. A grating 46 may be arranged in the water space above the inclined perforated plates. The steam is withdrawn through pipes 50.
Patent GB-682459-A (GB)
Title: Safety devices relating to gill boxes
IPC: D01H5/04
Filed: 1950-02-08
Abstract: 682,459. Gill-boxes. ACKROYD, S. May 8, 1951 [Feb. 8, 1950], No. 3212/50. Class 120(i) [Also in Group XXIV] On a gill-box, guards 15, 17 pivoted at 14 are arranged to cover the fallers 5, 6, back rollers 1, 2, and loose rollers 13, and control switches 19, 20 are interconnected with the machine starting switch so that on either or both guards being raised the machine is stopped and cannot be started until the guards are both closed. Loose guard rollers 10, 11 are also arranged in front of the back rollers 1, 2 to prevent the hands of the operator feeding the sliver being caught in the back rollers. The guards 15, 17 may alternatively be interconnected with clutch or belt-shifting mechanism for controlling the operation of the machine.
Patent GB-1025031-A (GB)
Title: An apparatus for mounting glass shades of light fittings
IPC: F21V17/06
Filed: 1964-01-27
Abstract: 1,025,031. Supporting lamp shades. H. GANTENBRINK, and B. GANTENBRINK, [trading as GANTENBRINK LEUCHTEN o.H.G.]. Jan. 27, 1964 [Feb. 11, 1963], No. 3327/64. Heading F4R. A lamp shade 7 having an opening at its upper end is supported on a light fitting 1 provided with a tubular member 2 by means of a mounting device comprising a dished member 9 secured to the tubular member so that its open end projects beyond the end of the tubular member and a pair of limbs 5b which are also secured to the tubular member and are urged resiliently outwardly, the limbs being formed with shoulders 5c and extending at their ends through radial slots 10 in the dished member so that when the shade is moved upwardly to abut a collar 9d of the dished member the limbs engage resiliently against the inner surface of the shade to hold it firmly in position. The position of the dished member along the tubular member may be adjusted by means of a nut 11. The limbs 5b are made of resilient material.
Patent GB-862580-A (GB)
Title: Methods of fabricating materials suitable for display or packaging purposes
IPC: C08J9/36
Filed: 1958-01-31
Abstract: 862,580. Laminates. LEMOINE, H. G.  March 31, 1959 [Jan. 31, 1958], No. 3353/58. Class 140. Material for use for display or packaging purposes comprises a layer 1 of foam material sandwiched between layers 2 of tape, each having a coating of pressure-sensitive adhesive on both sides, the tape layers extending beyond the foam layer and having, at least on one side, edges 3 which are pressed into sealing contact. The outer surfaces of the tapes may be protected by removable cover layers 4 of thermoplastic synthetic resin. As shown, the tapes 2 are sealed along both edges and the edges of the layers 4 extend beyond these. Alternatively the edges on one side may all coincide the edges 3 on the other side being sealed together and turned over and the edges 5 on that side left open. In further constructions a single tape is wrapped around the layer 1 and the edges sealed on one side only, and upper and lower tape layers are edge-sealed on all four edges. The foam material may be foamed natural or synthetic rubber, or foamed polyethylene. Specification 838,659 is referred to.
Patent GB-1474364-A (GB)
Title: Amidine compounds
IPC: C07D413/14
Filed: 1976-01-28
Abstract: 1474364 Bis-pyrolidinyl tricyclic compounds BRISTOL-MYERS CO 28 Jan 1976 03360/76 Heading C2C Novel compounds of Formula I wherein X is a sulphur or oxygen atom, or a divalent methylene radical of the formula -C(Z 1 Z 2 )- wherein Z 1  and Z 2  are each independently a hydrogen atom or a straight chain lower alkyl group containing from 1 to 4 carbon atoms inclusive; Y is a hydrogen or halogen atom, a trifluoromethyl group, a lower alkyl group containing from 1 to 4 carbon atoms or a lower alkoxy group containing from 1 to 4 carbon atoms and R is a hydrogen atom or a straight chain lower alkyl group containing from 1 to 4 carbon atoms inclusive; or a pharmaceutically acceptable acid addition salt thereof are prepared by reacting a compound of Formula II with a compound of Formula III and POCl 3  or with 2-chlorro-1-(1-pyrolin-2-yl)- 2-pyrroline hydrochloride and optionally converting the product to a salt. Pharmaceutical compositions in conventional forms for oral and parenteral administration and having smooth relaxant, platelet aggregation inhibiting and diuretic activity comprise an above novel compound and a carrier or diluent.