baber/WOPTO huggingface dataset:
Patent GB-514608-A (GB)
Title: Improvements in and relating to electric wave filters
IPC: H03H7/01
Filed: 1938-02-04
Abstract: 514,608. Impedance networks ; multiplex wireless signalling. BRITISH THOMSONHOUSTON CO., Ltd. Feb. 4, 1938, Nos. 3586, 3587. Void. Convention dates, Feb. 6, 1937 and Feb. 23, 1937. [Classes 40 (iii) and 40 (v)] A multiband filter or separator is derived from a simple low-pass or high-pass prototype by means of formulae which ensure that the limits of attenuation shall be the same in the multiband as in the prototype filter. The attenuation and image-impedance functions of the multiband filter are obtained by transforming the corresponding functions of the prototype filter in accordance with either equation (1) or equation (2), where w is the pulsatance applied to the multiband filter, # is a corresponding function applied to the prototype filter, and W1, w2, are the arbitrarily chosen cut-off pulsatances of the multiband filter. In an example, a Caner attenuation function of a simple low-pass filter having Tchebyscheff parameters is transformed by means of equation (1) into the corresponding function for a filter having two pass bands and two attenuation bands and the same maxima and minima of attenuation as the prototype, and inductance arm and a capacity arm of the prototype being replaced respectively by arms of the form shown in Fig. 2b. Equation (2) enables realizable filters to be derived in some instances from non-realizable prototypes. Equation (1) gives a derived filter having real poles if the poles of the prototype are real, and equation (2) often does so. When the poles are real, one may be contributed by each of a series of lattice networks, and these may be combined with a network provided with mutual inductance and yielding imaginary poles. A separator having constant input resistace may comprise a bridge, Fig. 3, in which the networks X, X<1> have the same pass-bands and attenuation bands ; or the arrangement shown in Fig. 4, where the networks X, X<1> have converse passbands and attenuation bands and the reactance Z is negative, but may be absorbed by omission of an equal part of the input impedances of the networks X, X<1>, Fig. 5 (not shown). Multiple wireless telegraphy. A number of adjacent frequency bands may be sharply separated by first dividing them into two groups, comprising alternate bands, by means of the separator described above, which gives sharp cut-offs. The bands composing each group can then be easily separated from one another. The Specification does not admit of satisfactory abridgment.
Patent GB-958548-A (GB)
Title: Means for retarding the rate of fall of a crash-landing aircraft
IPC: B64D45/00
Filed: 1962-01-31
Abstract: 958,548. Direct lift aircraft. G. A. MERRICKS. April 24, 1963 [Jan. 31, 1962], No. 3592/62. Headings B7G and B7W. An aircraft has an auxiliary power plant to be operated during crash landing, and means responsive to the altitude of the aircraft controls the direction of thrust of the plant so as to maintain the aircraft substantially level. In the Figure, a rocket motor 10 is mounted in the fuselage by a gimbal 13 below the centre of gravity 12, so as to be tiltable fore-and-aft or laterally by hydraulic devices controlled by valve mechanism 21 responsive to a gyro device 22, so that in an emergency the motor 9 can be started to provide lift, and attitude correction torques. The motor may be a ducted fan or a gas turbine engine. The discharge aperture in the fuselage may be normally closed by a door which is opened or blown away on starting the engine.
Patent GB-1463953-A (GB)
Title: Compositions containing prostaglandins
IPC: A61K31/405
Filed: 1975-01-28
Abstract: 1463953 Compositions containing prostaglandins UPJOHN CO 28 Jan 1975 [28 Jan 1974] 3614/75 Heading A5B A pharmaceutical composition comprises an anti-inflammatory prostaglandin synthetase inhibitor and a prostaglandin of the PGFalpha-type. The inhibitor may be for example indomethacin, aspirin, phenylbutazone, mefenamic acid, flufenamic acid, naproxen, 2-phenoxy phenyl propionic acid, (+)-3-ch!oro-4-cyclohexyl-alphamethyl phenyl acetic acid or ibuprofen. The compositions may be administered orally, rectally or vaginally.
Patent GB-309481-A (GB)
Title: Temperature-responsive circuit controlling device
IPC: G08B17/06
Filed: 1929-02-04
Abstract: 309,481. America Fire Prevention Bureau, (Assignees of Derby, J. H.). April 11,1928, [Convention date]. Alarms operated by fusible devices. -In a circuit-closing device of the kind comprising two discs 1, 5 serving as terminals in the circuit, a fusible conducting disc 15 between the terminals and in contact with one, and a perforated insulating disc 16 between the conducting disc and the other terminal, the perforatione 17 in the Insulator 16 are filled with a fusible insulating substance, such as a wax designed to melt before the conducting disc 15. This prevents false alarms due to moisture between the terminals. The latter are formed respectively with terminal posts 2, 6, and the terminal 5 has a flange which is bent over. flexing the terminal discs so that their dished central portions compress the conducting disc 15 and insulator 16. The insulating disc 16 may be impregnated with low-melting wax, and a coating 21 of insulating material may be applied to the exterior of the component parts. Specification 123,058. [Class 38 (v), Electric switches &c.], is referred to.
Patent GB-607466-A (GB)
Title: Improvements in or relating to chimneys
IPC: F24B1/18
Filed: 1946-02-05
Abstract: 607,466. Chimneys. COOK, W. G. Feb. 5, 1946, No. 3623. [Class 25] As shown in Fig. 4 a chimney for two fireplaces arranged back to back comprises pre-fabricated corner and intermediate posts 4, 5, between which are slabs 8, 9, forming the front, and rear faces of the chimney, slabs 2 forming the side walls and slabs 3 forming a partition wall extending across the chimney between the two fireplaces. Where the chimney extends through the floor is arranged a cover slab 16 filled in situ with weak concrete 22 Fig. 1, a fireclay hopper 19 leads from each fireplace to. its flue 6, 7, the flues being lined with fireclay. The chimney stack above the floor 10 is encased in concrete stock units 11a, 12a, the space between the flues and the stack units being filled with weak concrete 23 Fig. 5.
Patent GB-627332-A (GB)
Title: Improvements in or relating to containers for tennis balls
IPC: B65D81/20
Filed: 1947-02-07
Abstract: 627,332. Canisters. METAL BOX CO., and JACKSON, R. J. Feb. 7, 1947, No. 3726. [Classes 66 and 125(iii)] A canister 10 for tennis balls 14 comprises a tubular body of tin-plate with a flushlapped or a lock seam and a bottom 12 crimped and soldered thereto, or the body may be a deep-drawn cylinder of aluminium, the top of the body being reduced at 17 to receive as a flush fit a neckring 15 of inverted U- section to provide a seating for a domed-disc top 20 which is held in place by internal air pressure, a rubber ring 21 or a sealing composition making the canister air-tight. The disc 20 is inserted, or removed after release of pressure, by distorting it or the mouth of the canister by pressing at diametrically opposite points so that the disc can pass edgewise through the mouth. The rim of the disc may be turned over at 22, and it may be perforated in the middle and sealed by an air-tight patch which is pulled off to release the pressure. A push-on lid 23 protects the top 20 &c. and serves as a closure after removing the top 20.
Patent GB-290351-A (GB)
Title: Improvements in and relating to thermionic amplifying devices
IPC: H03F1/16
Filed: 1927-02-10
Abstract: 290,351. Smith, W. S., and Mc- Lachlan, N. W. Feb. 10, 1927. Thermionic amplifiers.-To compensate for the effects of interelectrode capacity in a thermionic amplifier one or more compensating-valves 15, 15<1> are provided to the input of which potential variations at the output of the amplifier are applied and the output of which is coupled to the input of the amplifier. The Figure shows amplifying-valves 4, 4<1> coupled by an impedance 3 and condenser 19. The anode circuits of the compensating-valves 15, 15<1> contain non-inductive resistances 14, 14', and their anodes 16, 16<1> are coupled through condensers 21 to the grids of amplifying valves 1, 1<1>. The grids 18, 18' may be coupled through biassing batteries to the anodes 4, 4', or as shown through resistance 13, 13', the necessary bias being obtained from a battery 7A through resistances 12, 12<1>. The Provisional Specification describes the use of compensating-valves in an amplifier which is resistance-coupled at least in alternate stages.
Patent GB-1390294-A (GB)
Title: Process for the purification of lactams in particular epsilon- caprolactam
IPC: B01D11/04
Filed: 1973-01-25
Abstract: 1390294 Purification of lactams BAYER AG 25 Jan 1973 [28 Jan 1972] 3815/73 Heading C2C A process for the purification of a lactam comprises treating the solid, finely-divided lactam with an organic solvent which is a (C 1 -C 5 ) alcohol, an ester of a carboxylic acid having 1 or 2 carbon atoms in the acid component and 1 to 4 carbon atoms in the monohydric alcohol component, a ketone of less than 9 carbon atoms, benzene, a (C 7 -C 12 ) alkyl aromatic compound, a cyclic ether, a methyl- or ethyl-substituted carboxylic acid amide, or an (C 1 -C 6 ) aliphatic chlorinated hydrocarbon, for a period of up to 60 hours at a temperature of from 0‹ to 50‹ C. Suitable solvents include DMF, ethyl formate and acetate, dioxane, methanol, acetone, isopropanol, isobutanol, carbon tetrachloride, methylene chloride, MIK, toluene, ethylbenzene, xylene, cumene or benzene. Examples describe the purification of #- caprolactam.
Patent GB-577438-A (GB)
Title: Improvements in power transmission mechanism
IPC: B63H23/00
Filed: 1944-03-01
Abstract: 577,438. Reversing gearing. HINDMARCH, T. March 1, 1944, No. 3858. [Class 80 (ii)] [Also in Group XXXIII] An arrangement of reversing gearing for two or more prime movers driving a common output shaft, for example, the propeller shaft of a ship, comprises separate forward and reverse drive gear units for each prime mover. In the Fig., four such units are shown with input shafts c', c', c<3>, c<4>, and output shafts d<1>, d', d<3>, d<4>, driving through gearing l, m, a main output shaft b. Each gear unit comprises fixed gears g, h on the input shaft, the first meshing directly with a loose gear f on the driven shaft and the second meshing with a loose gear e through a reverse idler (not shown). Pressure oil-operated friction clutches i, k of the type described in Specifications 382,865 or 438,563 are utilised for clutching either of the loose gears e, f to their shafts for reverse and forward driving respectively. Any one or more of the power units may be selected for driving, the others remaining in neutral gear with both clutches inoperative. Means are preferably provided to ensure that the clutches of the selected driving units are all engaged for the correct direction of rotation The separate gear units are preferably mounted upon, or contained within, the main output shaft housing as shown but may be separate and connected to the main output shaft by external shafts and flexible couplings. Pairs of the gear unit output shafts d<1>, d<2>, and d<3>, d<4> may be coupled together for a common drive on to the main output shaft and the main gearing m, l may also include an additional forward and reverse gear unit. Each gear unit may comprise more than one forward and reverse speed.
Patent GB-211498-A (GB)
Title: Improvements in joint connections for receptacles for lubricating purposes
IPC: F16N21/04
Filed: 1924-02-14
Abstract: 211,498. Trinquart, L. G. Feb. 15, 1923, [Convention date]. Surface contact - joints without positive connecting means; with valves. - Relates to means for enabling thick oil, grease, &c., to be poured from one vessel to another. Connected to the vessel from which the pouring is to take place is a spherical member a formed with a duct c and adapted to engage with a socket or circular edge i on the second vessel, the parts forming a fluid-tight joint when brought together. In the construction shown, the spherical part a is formed on a member 1 slidable within a constricted neckportion 2 suitably attached to the vessel, the ends of the part l being enlarged to form valve portions a, b, adapted to seat on parts e, f, of the neck-portion, the lower part of the member having a tubular passage way c with lateral ports or openings d. The reception vessel is provided with a part having a circular edge or seating i adapted to form a tight joint with the lower valve portion a, and when sufficient pressure is exerted on this seat the upper valve b of member l is lifted from the seating f and the contents of the pouring vessel can flow through the ports d and passage way into the second vessel. A spring may be provided to assist the closing of valve b and dust covers or closures may be provided for the member l and also for the opening of the reception vessel.
Patent GB-143299-A (GB)
Title: Improvements in or relating to aeroplanes
IPC: B64C3/42
Filed: 1919-02-17
Abstract: 143,299. Stout, W. B. Feb. 17, 1919. Steering and balancing. - An aeroplane in which the dihedral angle is variable is provided with means by which the position of the centre of gravity is altered to an extent greater than that due to the movement of the wings alone. In the preferred form, the cockpit and the power plant 4 form a unit 8 movable as a whole relatively to the central panel 1 to which the wing portions 2 are pivoted at 9, so that the dihedral angle may vary. This variation is controlled partly by springs 10 and partly by the weight of the cockpit unit, which is connected to the wings, so as to rise with them, by an arrangement of cables and drums 11, 14, 15. 16 as shown, or by toothed sector and rack-and-pinion gearing, or by pin-andslot mechanism. In the normal position, the cockpit unit is substantially enclosed within the camber of the wing, which is built up on a framing 20, the tapering tip being reinforced by a strip of veneer,
Patent GB-122949-A (GB)
Title: Improvements in or relating to Clinometers.
Inventor: MELDAL EDWARD
IPC: G01C9/16
Filed: 1918-03-06
Abstract: 122,949. Meldal, E. March 6, 1918. Clinometers.-Two similar closed circular chambers, filled with liquid and each containing a pivoted pendulum, are hinged together and provided with means by which one can be set in a plane at right-angles to that of the other. In use on aircraft, in this working position, one pendulum indicates fore-and-aft inclination and the other sideway inclination. Each chamber is shallow in comparison with its diameter and has one face transparent. The pendulum is pivoted at the centre of each chamber and carries an arm extending diametrically through the pivotal point. The chamber indicating fore-and-aft inclination is mounted in its plate E so as to be rotatable in its centre C in order to compensate for deflection of the pendulum from the vertical due to the speed of the aeroplane. The rotation may be made by an arm A<2> provided with a pointer A<5> moving over an arc E<2>, graduated to indicate the speed in miles per hour.
Patent GB-588413-A (GB)
Title: Improvements in a tape sealer
IPC: B65H35/00
Filed: 1945-02-16
Abstract: 588,413. Tape affixers. OFTEDAHL, J., and OFTEDAHL, E. J. Feb. 16, 1945, No. 3971. [Class 73] Within the housing 1 of a tape dispenser, there is provided a roll of adhesive tape 16 and a moistening device 15. The tape 17 is pulled ,from the roll 16 under a guide roller 27, over a moistening roller 26 and finally under the roller 18 which presses the tape on the article to be sealed. The moistening device 15 consists of a storage chamber 23 with a shallow forward portion 24 the top of which acts as a well 25. This upper portion of the storage chamber 25 is provided with a small opening 35 through which the moistening liquid may be forced by means of a spring 37 in the bottom of the housing 1 co-acting with the bottom of the storage chamber and with the article being taped. The moistening liquid is picked up by the removable roller 26 and transferred to the adhesive tape. The roller 18 is mounted in a hood 19 which is acted upon by the spring 21 tending to hold the hood in a predetermined position. 48 is a tearing edge on the hood. The roller 26 may be formed of sections of sponge rubber with intermediate rigid discs.
Patent GB-1486903-A (GB)
Title: Vehicle lamp assembly
IPC: B60Q1/06
Filed: 1974-01-29
Abstract: 1486903 Adjusting vehicle lamps LUCAS ELECTRICAL Ltd 11 Dec 1974 [29 Jan 1974] 03977/74 Heading F4R A vehicle headlamp 10 is pivotally attached to the vehicle body 23 by means of a mounting bracket 11 comprising first and second elongated portions 18, 20 having respective upstanding ends 24, 25 pivotally connected together by a pair of coaxial pivots 26. Movement of the lamp about the pivots 26 is controlled by a screw adjusting device 13 connected between the upper side of the lamp and a vehicle body portion 39. The first bracket portion 18 is pivoted to the lower side of the lamp by a pivot 19 perpendicular to the axis of the pivots 26, movement of the lamp about the pivot 19 being controlled by a screw adjusting device 12 comprising a screw 28, which is rotatable but axially captive in a plate 29 fixed to the bracket portion 18, and an internally threaded bush 30 which receives the screw 28 and is carried by a plate 31 secured to the lamp.
Patent GB-1246723-A (GB)
Title: Addition reaction involving esters of diperoxyfumaric acid to form compounds having diperoxysuccinyl groups
IPC: C07D307/24
Filed: 1969-01-23
Abstract: 1,246,723. Polymerization; polyethylene glycol esters. WALLACE & TIERNAN Inc. 23 Jan., 1969 [8 March, 1968], No. 4017/69. Headings C3G, C3P and C3R. [Also in Division C2] Polymers of the formula are obtained by stirring and irradiating with a sun lamp either a slurry of a copolymer of methyl vinyl ether and maleic acid and di-t-butyl diperoxyfumarate in benzene or an acetone solution of the reactants. Polymers of the Formula XVI above, in which x and y are from 10 to 500, are obtained by a similar process using an acetone solution of polyvinyl acetate and di-t-butyl diperoxyfumarate. In Example 7, polymers of the formula in which m+n is 10 to 16 are obtained by slowly adding a pentane solution of di-t-butyl diperoxyfumarate to a polyethylene glycol at a temperature of 24 C. with stirring and irradiation with a sun lamp. The polymer adduct thus obtained may be used to initiate styrene polymerization at 100 C. to give a mixture of polystyrene homopolymer and a polyethylene glycol-polystyrene graft copolymer with the probable structure wherein m+n is 10 to 16 and x and y are from 10 to 500. The polystyrene homopolymer may be removed from the mixture by extraction with benzene. Polystyrene is obtained by polymerizing. styrene in the presence of the following peroxide initiators: di-t-butyl alpha-(2-tetrahydrofuryl)- diperoxysuccinate, di - t - butyl alpha - butyryldiperoxysuccinate, and t-butyl 3-(t-butylperoxycarbonyl) - 4 - methyl - 4 - isopropoxyvalerate.
Patent GB-850896-A (GB)
Title: Improvements in or relating to method of removal of resin
IPC: B01D29/01
Filed: 1959-02-05
Abstract: <PICT:0850896/IV(a)/1> Resin is removed from a resiniferous aqueous suspension of wood pulp by passing the suspension through at least one whirling-chamber spray nozzle to form a conically diverging spray of small droplets of the suspension and directing the spray against a flat strainer surface spaced from the spray nozzle with the central axis of the spray directed perpendicular to the strainer surface.  As shown, a resiniferous wood pulp suspension containing 0,91% dry spruce sulphate pulp is supplied from a gravity tank at a pressure of 5 metres water column through a hose 9 and pipe 8 at a rate of 400 litres per minute to a whirling-chamber spray nozzle 7 in a chamber 2 to form a conically diverging spray 10 which impinges on a flat 0,2 mm. mesh wire screen dividing the chamber 2 from a second chamber 4. After slacking off the grub screw 12 the distance between the nozzle and the screen may be adjusted, and in the example the optimum is found to be 20 to 22 cm., within which range 50% of the resin in the pulp is removed by passing through the screen with about 1,5% of the total fibres, the deresinified pulp not passing through the screen and being discharged from the chamber 2 through the pipe 3.
Patent GB-266339-A (GB)
Title: Improvements in regulating devices for fluid pressure
IPC: G05D16/06
Filed: 1927-02-14
Abstract: 266,339. S÷ffge, H. Feb. 16, 1926, [Convention date]. Fluid-actuated valves.-A pressure regulator of the kind in which the loading spring acts through a spiral pulley so that as the spring is extended the leverage is reduced to keep the load on the diaphragm constant, is provided with means for varying the position of the spring relative to the scroll when the tension of the spring is adjusted. In the form shown in the Figure, the valve 5 is actuated by a diaphragm 2 connected by a spindle 3 and cord 11 to a pulley 9 mounted on a fixed axle 10. The loading spring 8 is attached at one end to a hook 18 carried by a member adjustably mounted on an inclined screw 21, and at the other end is connected to an eye 17 on a member adjustably mounted on a lever 13 pivoted at 14 and connected by a cord to a scroll 9<1> on the axle 10. The pulley 9 and scroll 9<1> may be supported by cords instead of being mounted on a fixed axle. A modification is described in which a second diaphragm subject to a second pressure is fitted to the lower end of the valve spindle. The diaphragm may be protected by a baffle and an ejector may be fitted about the valve spindle to reduce leakage. The Specification, as open to inspection under Sect. 91 (3) (a) comprises also a modification in which a lever mechanism replaces the spiral pulley. This subject-matter does not appear in the Specification as accepted.