baber/WOPTO huggingface dataset:
Patent GB-174413-A (GB)
Title: Improvements in or relating to machines for drawing threads from fabrics
IPC: D05B81/00
Filed: 1920-10-19
Abstract: 174,413. Welch, C., and Thompson, J. Oct. 19, 1920. Open-work effects, producing. - Relates to thread-drawing machines of the type wherein a serrated V-shaped drawing-tool q, Figs. 1 and 2, passes through the fabric and pushes threads to the underside thereof, these threads being then cut. The fabric under operation is stretched laterally by means of a fine toothed bar a movable in a slot in the usual throat or work-plate, and about a vertical pivot d<1> and located below one of the usual presser-feet b. An ordinary feeding-piate may be used under the other presserfoot, or a second stretching-bar a. The vertical pivots d' are carried by a slide k, which is operated by parts m, n so as to feed forward the fabric, the rear ends of the bars a being caused to move laterally to stretch the fabric by means of springs p acting on arms e co-operating with stops f on adjustable arms i. The threads are cut by a flexible steel knife r sharpened at its front edge and adjustably screwed to a plate t secured to a plate u, which is reciprocated in guides v beneath the throat plate &c. The knife is adjusted to coact with the rear edge of the usual slot provided in the throat plate &c. or in a removable plate screwed thereto, which slot thus acts as a stationary cutter. For drawing a large number of threads, one or two fork-shaped drawing-tools each provided with a slot 4, Fig. 5, or two or four drawing-tools of the type shown in Fig. 2, may be used in conjunction with a plate having one or two pairs of slots y, Fig. 4, separated by divisions 5, which serve to support the fabric and the central part of the threadcutting knife. One of the arms of the double drawing-tool may be arranged in advance of the other. The plate 2 may be arranged above the throat plate &c., instead of being flush therewith.
Patent GB-1195728-A (GB)
Title: Hydrocarbon Purification
Inventor: WOERNER RUDOLPH CARL
IPC: C07C7/11
Filed: 1967-06-27
Abstract: 1,195,728. Purifying unsaturated hydrocarbons. JETRO-TEX CHEMICAL CORP. 27 June, 1967 [27 June, 1966], No. 29671/67. Heading BlL. Unsaturated hydrocarbons contained in gaseous feed 1 from an oxidative dehydrogenation reactor and comprising 3.5-80 mol % of the feed, inert non-condensable gases amounting to 20-96% mol .thereof (of which oxygen amounts to 0.001-3 mol %), are passed to an absorber maintained at 55-150F. and 100-200 psig in counterflow with an organic solvent boiling at 170-3.20F. which enters by line 2. The effluent .solution passes by line 5, cooler 6 (wherein it is preferably cooled to below 100F), and line 7 to a separator maintained at 55-190F. and -5 to 70 psig, where acetylenes and non-condensable gases are removed. The effluent solution leaves by line 10 and passes to a stripper, recovered solvent being returned to the absorber by line 12 and purified unsaturated product hydrocarbon being withdrawn through line 11. The process is of particular application to the purification of butadiene using a solvent consisting predominantly of 4- vinyl-1-cyclohexene with ,minor amounts of benzene and toluene. Other suitable solvents comprise hydrocarbons of formula CxHy where x is 6-9 and y is 6-18 which may be cyclic or branched chain; ahphatic amines; chlorinated hydrocarbons; nitro compounds; and heterocyclic compounds. Many suitable solvents are specified.
Patent GB-762333-A (GB)
Title: Improvements in or relating to bolts, screws or studs
IPC: F16B35/04
Filed: 1954-10-14
Abstract: 762,333. Bolts. PLACE, C. E. S. Oct. 14, 1954 [Oct. 29, 1953], No. 29679/54. Class 89 (1). A bolt, stud, &c. shank 7 has a diameter at least as large as the major diameter of the threads 9, and a number, e.g. six, equallyspaced shallow grooves 11 extending along substantially the entire length of the shank. The grooves may be axial or helical and the resultant cross-sectional area of the shank approximately equals the mean equivalent area of the threads, which is obtained from the formula where P is the pitch diameter and R the root diameter. In another embodiment, sixteen helical grooves are provided. The grooves and threads may be rolled in a single operation.
Patent GB-799137-A (GB)
Title: Improvements in contact keyboards for controlling typewriters and calculating, accounting and like machines
IPC: B41J3/51
Filed: 1956-10-01
Abstract: 799,137. Typewriters &c. SIEMAG FEINMECHANISCHE WERKE, GES. Oct. 1, 1956 [Oct. 3, 1955], No. 29826/56. Class 100(4) A contact keyboard for controlling typewriters, calculating, accounting and like machines, in which striking a key makes a contact completing a circuit to a power drive which effects the desired operations, has a locking device which locks the struck key and contact in the operating position during the course of the function, positively unlocks both key and contact when the operation is carried out, and serves as a lock against the closing of a contact by a key which has not yet been returned to rest. Depressing key lever 66 causes frame 82 to be pushed anti-clockwise by contact operating lever 72 pressing on securing strip 86. Lever 72 pulled by spring 76 closes contacts 79 by pressing stud 96 when its recess is opposite locking bar 75. The mechanism is now locked as shown, ball locking strip 62 preventing the movement of further keys. Making contact 79 causes the desired function to be carried out, on completion of which electro-magnet 99 is energized and frame 73 is rocked anticlockwise. Frame 82 is spring-urged clockwise when lever 72 is pushed out of engagement with strip 86 by locking bar 75 on frame 73. The tip of lever 72 is now to the left of strip 86 and cannot remake contacts 79 if still held down by key lever 66. Frame 73 returns to its rest position when magnet 99 is de-energized, thus lifting bar 75 from its recess in lever 72 and freeing lever 72 for return when key lever 66 is released. In a modification bar 75 can be stationary and frame 73 shorter to bear on the tip of lever 72. Also, frame 82 and strip 86 may be replaced by pawls. Full stroke locking can be obtained by stepping the recess in lever 72. Noise-damping stops 64, 93, 77, 88, 89 are provided.
Patent GB-504758-A (GB)
Title: Double hung window
IPC: E05D13/00
Filed: 1937-11-01
Abstract: 504,758. Sliding windows. DEHN, F. B. (Curtis Cos., Inc.) Nov. 1, 1937, No. 29859. [Class 20 (iii)] A window comprising vertically-slidable sashes balanced by springs and weather strips inserted between the sides of the sashes and the window frame, the weather strips being of the kind which serve as combined guide and friction elements, has the stiles of the sashes formed with extensions 36, 38, in order that the lengths of the strips may exceed the heights of the sashes, to increase the friction area of the strips. The weather strips 26 are mounted in grooves, in the sash stiles and are provided with flexible limbs which engage channel-shaped strips 29 let into the fixed frame. A four-fold contact between the sashes and the fixed frame may be obtained by forming the weather strips from two members, each comprising two flexible limbs, one of the members being mounted between the limbs of the other member. The balancing springs 11, 12 are mounted in grooves in the stiles of the sashes and fixed frame. As shown in Fig. 5, the bottom rail of the sash is grooved for the reception of a sealing member provided with diverging limbs 34 which contact with the sill when the window is closed.
Patent GB-1151095-A (GB)
Title: 1,3-Dioxan-2-yl-Alkanoic Acids and derivatives thereof
IPC: C07D319/06
Filed: 1966-07-04
Abstract: 1,151,095. 1,3 - Dioxan - 2 - yl - alkanoic acids and derivatives thereof. DR. KARL THOMAE G.m.b.H. 4 July, 1966 [7 July, 1965], No. 30018/66. Heading C2C. Compounds of the formula where R 1  is hydrogen or alkyl, R 2  is alkyl, aryl or aralkyl, R 3  and R 4 , which may be the same or different, are hydrogen or alkyl, R 5  is alkyl, aryl or aralkyl, said alkyl groups containing 1 to 6 carbon atoms, and n is 1 or 2, may be obtained by saponifying an ester (claimed per se) of the formula where R 6  is a lower (C 1-6 ) alkyl group, with a saponifying agent followed by treatment with an acid. The free acids may be converted to their salts by treatment with organic or inorganic bases, preferably employing alkali metal hydroxides, carbonates or alkoxides. The ester derivatives, from which the acids are prepared, may be obtained by reacting a diol of the formula with a keto acid ester of the formula R 5 -CO-(CH 2 ) n COOR 6  or a ketal thereof, preferably in an inert solvent and suitably in the presence of an acidic condensation catalyst. When the radicals R 2  and R 3  do not have the same meaning in the above formula for the acid, the stereoisomers may be separated by conventional methods, e.g. chromatography. Pharmaceutical compositions comprise at least one compound of Formula (I) in association with a pharmaceutical carrier or excipient. The compositions may be administered orally or parenterally and they may be solid or liquid and may take the form of capsules, .tablets, dragees, granules, syrups, suspensions or drop solutions. The compositions may contain 10-300 mg. of active ingredient per dosage unit.
Patent GB-798182-A (GB)
Title: Improvements in stamping or other hammers
IPC: B30B15/16
Filed: 1954-10-20
Abstract: 798,182. Forging hammers. MASSEY, Ltd., B. & S., PICKWORTH, P. C. N., and BAINBRIDGE, F. Oct. 20, 1955 [Oct. 20, 1954], No. 30151/54. Class 83 (4). A drop stamp or hammer has its tup 18 raised by pressure oil admitted below its working piston 15, and the down-stroke of the tup is assisted by substantially constant fluid-pressure acting on the upper surface of the piston. The oil is contained in a reservoir 23 from which it is drawn by a pump 19, driven by an electric motor 20 and discharged into an accumulator 21 from which it passes through an inlet valve 13 to the underside of the piston 15. The upper end of the working cylinder 10 communicates through a pipe 24 with a source of compressed-air at a substantially constant pressure of about 80 lb. per square inch. For effecting the downstroke of the tup, a discharge valve 14 is opened. A groove 25 in the piston permits any leakage air to be discharged to atmosphere through a duct 25<SP>1</SP>. In another embodiment, Fig. 2 (not shown), the accumulator 21 is formed as a jacket surrounding the working cylinder 10. In another embodiment, Fig. 3, the working cylinder 10b is surrounded by a sleeve 28 disposed within the oil reservoir 21b. The working piston 15b has an upper extension 26 passing through a gland 27 in the reservoir 21b and the upper annular portion of the piston is subjected continuously to the accumulator pressure through the column of oil in the sleeve 28 and upper part of the cylinder 10b. The piston 15b is raised, upon opening of inlet valve 13b, by differential action of the oil pressure on its upper and lower surfaces. In all embodiments the tup may bo suspended at any point by the closing of both inlet and exhaust valves. Means are provided for by-passing the pump delivery when the accumulator pressure reaches a predetermined maximum and for renewing the delivery at a predetermined minimum pressure.
Patent GB-733093-A (GB)
Title: Polymerisation process
Inventor: MORGAN LESLIE BUDWORTH
IPC: C08F291/00
Filed: 1952-11-28
Abstract: Grafted acrylonitrile polymers are obtained by polymerizing acrylonitrile in aqueous medium alone or in the presence of not greater than 15 per cent of other copolymerizable materials, together with a water-soluble high molecular weight organic substance containing the C-H bond, having a molecular weight greater than 1000, so that the amount of high molecular weight substance in the grafted acrylonitrile polymer formed is between 5 and 40 per cent, then separating the polymer from the aqueous phase, the aqueous phase so separated, with, if desired, any aqueous washings of the polymer, being used again in polymerization.  Water-soluble high molecular weight substances specified are polyvinyl alcohol, polyvinyl sulphonate, polyacrylic and polymethacrylic acids, polymethacrylamide, polyethylene oxide, starch, cellulose methyl ether, and gelatin. Copolymerizable monomers specified are vinyl acetate, vinyl chloride, esters of acrylic and methacrylic acids, e.g. methyl methacrylate, styrene, isobutylene, and 2-vinyl pyridine. Polymerization may be carried out in the presence of catalysts such as azo-di-isobutyronitrile, benzoyl peroxide, hydrogen peroxide, and persulphates, or a reduction activation pair such as ammonium persulphate and sodium metabisulphite.  The aqueous medium may also contain sodium sulphate in order to obtain an p  easily filterable product, ethyl alcohol, and dilute sulphuric acid.  The process may be carried out batchwise or continuously, and yields polymers from which fibres may be formed. Specification 715,194 is referred to.
Patent GB-299062-A (GB)
Title: Improvements in or relating to electrical measuring protective or control systems
IPC: G01R15/14
Filed: 1928-10-19
Abstract: 299,062. Associated Electrical Industries, Ltd., (formerly Metropolitan-Vickers Electrical Co., Ltd.). (Assignees of Peters, J. F.). Oct. 20, 1927, [Convention date]. Voltage-modifying arrangements,. supplying consuming devices.-In measuring, protective and control systems, a capacitively reduced voltage proportional to and in phase with the main voltage is obtained for application to a voltmeter, synchroscope, relay or other load by connecting across the main circuit two condensers in series and by connecting an inductance and the load in series across one of the condensers directly or through a transformer. The inductance is so adjusted that, with the load and the main circuit both short-circuited, the circuit is resonant to the frequency of the main circuit, a voltage independent of the magnitude of the load within limits being obtained. If the condenser across which the inductance and load are connected is large in comparison with the other condenser, the inductance may be tuned with only the load shortcircuited. The condensers may be provided by one or more condenser-type insulators 8 leading conductive rods from the line L through the insulation-filled, earthed casing 1 of a highvoltage circuit-breaker or of a transformer or other apparatus. The insulators 8 comprise concentric alternate layers of tin foil and varnished paper with a binding of fine wire over the outer paper layer. The outer condenser element of the insulator 8 is augmented by a condenser 17 parallelled to it through a voltage transformer 12 and has connected across it the inductance 18 and the load B. The transformer 12 is protected by a spark-gap 16. In a modification, the casing 1 contains only the resonant circuit connected to a single insulator 8 about a rod leading through the casing from the line.
Patent GB-775592-A (GB)
Title: Improvements in electric rotary switches
IPC: H01H19/60
Filed: 1954-10-22
Abstract: 775,592. Switches held set and freed mechanically. WELWYN ELECTRICAL LABORATORIES, Ltd., and WHITFIELD, E. H. Oct. 22, 1954, No. 30502/54. Class 38(5) In a quick-make, quick-break rotary switch, a cam 28 has a recess 29 into which a ball 26 falls when the switch is in the open position; on rotating the cam the ball 26 is forced upwards along an inclined plane 25 tilting a plate 31 which moves spring blade contacts 19 and 20 to engage fixed contacts 13 and 14, the resilience of the blades being such as to oppose the motion of the ball. The cam is driven by a pin (not shown) which fits loosely into a slot 30 so that backlash,is available enabling the ball to locate the recess 29 rapidly when the switch is moved to the open position. In closing the switch the shoulders of the recess-29 and of the recess 35 clip the ball and rapidly urge it up the inclined plane thus providing a quick make of contact.
Patent GB-185350-A (GB)
Title: Appliances for use in repairing pneumatic tyres and the like
IPC: B29C73/00
Filed: 1921-11-16
Abstract: 185,350. Dale, J. Nov. 16, 1921. Puncture-closing and other repair devices.-A puncture-repairing device consists of hinged plates 1, 2, the plate 1 having a projection 4 which enters a slot 5 in the plate 2 and a spring catch 6 to hold the plates together, the projection 4 being covered by a flap 7 hinged to the plate 2. The plates are normally pressed together by a coiled spring 11, and are fitted with hand-pieces 15, 16. The tube 17 to be repaired is placed between the plates with the punctured portion on the projection 4 and the plates 1, 2 are secured by the catch 6. The punctured portion is thus stretched for cleaning and the application of the repair patch, which is held down by the flaps 7.
Patent GB-1521217-A (GB)
Title: Rotary reciprocating piston engine
IPC: F02B75/22
Filed: 1976-07-22
Abstract: 1521217 Radial cylinder IC engine A R SUTHERLAND and I J C SUTHERLAND 22 July 1976 [25 July 1975] 30618/76 Heading F1B A radial cylinder I.C. engine has a stationary cylinder block 4 connected fast to a casing, a central output shaft 17 rotably mounted in the cylinder block 4 and an orbital member 9 upon which pistons 8 in the cylinders 7 act to convert their reciprocating motion into orbital motion of the member 9 about the axis of shaft 17. The orbital member 9 encompasses the cylinder block and has grooves 12 upon which piston-mounted rollers 10 act. The orbital movement of member 9 is converted to rotation by a gear such as shown in Fig. 6, wherein a toothed ring 41 on the orbital member 9 is engaged by a spur wheel 40 on the shaft 17 whereas a ball-bearing 46 on a flywheel 44 runs on a track 45 on the orbital member 9 to retain the spur wheel 40 on the toothed ring 41. An alternative gear is shown in Fig. 7 wherein three pins 47 extending from a flywheel 44 carry roller bearings 51 which engage in the lobes 50, 49 of a cam surface 48 in the orbital member 9. Admission and exhaust to the cylinders is controlled by valves 28 and 29 actuated, via rockers (not shown), by cams 22 on the shaft 17. The engine preferably works on a four-stroke cycle with spark-ignition according to the sequence of cylinders A, C, E, B, D, A, etc. (see Fig. 5) although a 2-stroke cycle or compression ignition may be employed.
Patent GB-301190-A (GB)
Title: Improvements relating to automatic and semi-automatic telephone systems
IPC: H04Q3/00
Filed: 1927-11-15
Abstract: 301,190. Siemens Bros. & Co., Ltd., and Peters, C. L. Nov. 15, 1927. Automatic exchange systems. - A secondary line switch of the no-normal type which on seizure takes one or more steps in search of. an idle link is marked busy when all the outgoing links are in use by the extension of the busy potential from the test wiper to the incoming test wire. As shown, the line switches PS give access to outgoing repeaters OR, in which relay C is energized while a connection is being set up, and relay E is energized over the called line during conversation. When all the repeaters of the row are in use, relay GJ energizes over a chain circuit, and connects up relays G of the various panels of line switches. The incoming test wire of each idle line switch (relay T being de-energized) is thus connected to the test wiper, which is connected to ground in the busy repeater which the switch is then engaging. Statistical meters are operated when all the repeaters of a row are busy, and when all the repeaters of the group are busy.
Patent GB-196318-A (GB)
Title: Improvements in and relating to fire preventing and extinguishing devices for use with aeroplanes and the like
IPC: A62C3/07
Filed: 1921-11-17
Abstract: 196,318. Robertson, T. E., (Ross, Inc., W. A.). Nov. 17, 1921. Fire extinguishing and preventing in aircraft; sprinkling apparatus and systems, non- automatic.-A fire-extinguishing apparatus particularly applicable to aeroplanes &c. is adapted to envelope the engine with non- combustion supporting fluid in the event of fire and comprises a series of pipes 1, 3, 5, 5a surrounding the engine at different levels, and a pipe 11 surrounding the carburettor, these pipes being supplied under pressure from a tank 14 by pipes 16, 17, hand valve 13, and pipes 12 with non-combustion supporting agent to produce sprays through openings 2. Pipes 28, hand-valve 26 and pipe 25 supply non-cbmbustion supporting agent by sprays into the hydrocarbon contained in the fuel tank to render it non- combustible if necessary. A space between an inner tank 20 and an outer tank 21, spaced apart by corrugated bands 22, as described in Specification 165,278, is supplied with non-combustion supporting agent by tank 27 and pipe 28a.
Patent GB-718859-A (GB)
Title: Apparatus for cooling electronic tubes
IPC: H01J19/36
Filed: 1952-12-04
Abstract: 718,859. Cooling thermionic valves. COMPAGNIE FRANCAISE THOMSON-HOUSTON. Dec. 4, 1952 [Dec. 4, 1951], No. 30774/52. Addition to 706,209. Class 39(1) In an evaporative cooler according to the parent Specification, the deposit of scale from raw water on the cooling protuberances 32, Fig. 1, is minimized by causing the incoming water to follow an extended path, as by helical baffle 34, over a conical sleeve 31 which heats the water, by the time it reaches the bottom of the sleeve, to a temperature at which scale is deposited. The water, freed from scale, passes up over the anode, passing first if desired through a filter 37. The conical sleeve is mounted so as to enable it to be easily lifted out for cleaning. Water is introduced at 2 and the steam passes up through pipe 3 after being freed from suspended water by a baffle. The sludge can be inspected through glass section 36<SP>1</SP> and removed through valve 36 or a tap. In the complete supply arangement, raw water from tank 20<SP>1</SP>, Fig. 2, is supplied through insulating coil 43 and float-chamber 12, and merely makes up the deficiency of distilled water which circulates through cooler 5, tank 41, alarm chamber 46 and pipe 47. Equalizers 16<SP>1</SP>, 1611 are provided as shown.