baber/WOPTO huggingface dataset:
Patent GB-635895-A (GB)
Title: Improvements in electric follow-up systems
IPC: G05D3/12
Filed: 1946-07-29
Abstract: 635,895. Frequency modulation. LATTMANN, M. July 29, 1946, No. 22582. [Class 40 (v)] [Also in Group XXXVIII] An alternating reference-signal and the error signal in a follow-up system (see Group XXXVIII), which differs only in magnitude and phase-sense from the reference signal, are applied over transformers 37, 36, respectively, to a ring modulator 38, the output from which after filtering at 39 appears across the load resistor 42 as a unidirectional potential varying in magnitude and sense with the error signal. This potential is applied together with a biassing potential (not shown) to the grid of an amplifier 43. The anode current flowing in coil 44 varies the magnetization of a transformer 45 in accordance with the error signal and by virtue of the coupling between coils 44, 50, 46-frequency modulates the tuned grid oscillator 48-the F.M. output being taken from transformer 49.
Patent GB-1509573-A (GB)
Title: High refractive index ophthalmic glasses
IPC: C03C3/12
Filed: 1975-05-23
Abstract: 1509573 Ophthalmic glass CORNING GLASS WORKS 23 May 1975 [3 June 1974] 22701/75 Heading C1M A ZnO-free glass having a refractive index of 1À58-1À71, softening point 630-675‹C., strain point 450-500‹C, and coefficient of thermal expansion 45-60Î 10<SP>-7</SP> degC-' (25-300‹C.)consists essentially of, in weight per cent, to an extent of at least 90% The balance of the glass may comprise 0-6% La 2 O 3 , 0-10% BaO, 0-3% Li 2 O and/or Na 2 O, and 0-3% TiO 2 . Up to 0À3% of Sb 2 O 3  and/or As 2 O 3  may be present as fining agent. The glass may be fused to a segment of photochromic glass in forming a multifocal lens.
Patent GB-1392064-A (GB)
Title: Oscillators using insulated-gate field-effect transistors
IPC: H03F3/26
Filed: 1972-05-16
Abstract: 1392064 Transistor oscillators RCA CORPORATION 16 May 1972 [20 May 1971] 22786/72 Heading H3T An oscillator comprises IGFETs 12, 14 of opposite conductivity type having their drain electrodes connected in common to an output node 18 and their gate electrodes connected in common to an input node 16, a 180 degrees phase-shift feed-back network connected between the nodes 16, 18, and direct current impedances R 1 , R 2  connected between the source electrodes and supply source terminals 20, 22 for causing the source electrodes to be increasingly reverse-biased with respect to their respective substrates, with increasing current conduction through the respective transistors. The above arrangement minimizes changes in the output impedances of the amplifying stage and hence changes in the frequency of oscillation caused by temperature, supply voltage variations. The D.C. operating level of the transistors may be set by a single impedance 30 as shown or by a resistive network (Fig. 2, not shown)..
Patent GB-828414-A (GB)
Title: Aqueous micro-crystalline insecticidal dispersions
IPC: A01N25/04
Filed: 1958-07-16
Abstract: An aqueous microcrystalline insecticidal dispersion comprises water having incorporated therein a composition obtained by mixing molten DDT or benzene hexachloride with a salt or mixture of salts of sulphated butyl oleate according to the parent Specification has also incorporated in it a non-ionic surface active agent, for example, a condensation product of an alkyl phenol or a long chain fatty alcohol with ethylene oxide.  The water is preferably present in amounts of from 30 to 200% by weight of the composition.  Zinc stearate and an electrolyte, e.g. sodium chloride may also be incorporated.
Patent GB-723222-A (GB)
Title: Improvements in or relating to flexible metallic hose
Inventor: NEILSON CHRISTOPHER BERNARD VE
IPC: F16L11/15
Filed: 1952-12-10
Abstract: 723,222.. Metallic hoses. ELECTRO-HYDRAULICS, Ltd. Dec. 10, 1952. [Jan. 1, 1952] No. 22852/51. Class 99 (2). A flexible metallic tube 1, e.g. of phosphor bronze, stainless steel, "Monel" or "KMonel" (Registered Trade Marks) has a continuous helical groove 2 in which is inserted a reinforcing wire 3. Disposed over the wire 3 is a helicallywound, thinner wire 4 of opposite pitch. There may be an overall covering of braid 6 formed of high-tensile metallic material. The crests and roots of the groove 2 may be semi-circular in cross-section. In a modification, there is a further thin wire wound in the same direction as the wire 3 and over the wire 4, and an overall covering of braid.
Patent GB-1055462-A (GB)
Title: Improvements in or relating to electrical filter networks
Inventor: HATFULL TERENCE JAMES
IPC: H03H9/54
Filed: 1962-06-14
Abstract: 1,055,462. Filters. PLESSEY CO. Ltd. Sept. 12, 1963 [June 14, 19621, No. 22897/62. Heading H3U. A filter includes a number of sections, each section having a first arm including an electromechanical resonator and a reactance, this arm exhibiting a first type of resonance in the stopband of the section and resonances of a second type in both the pass-band and the stop band, the second arm of the section exhibiting a resonance of the second type which coincides with the second type of resonance of the first arm in the stop band. In the example shown, a quartz resonator Q exhibits a series resonance which defines the lower cut-off of a high-pass filter. It also has a parallel resonance in the pass-band and a further series resonance in the stop-band. The effect of this is neutralized by L 1 C 1 . The invention may also be applied to low-pass filters by re-arranging the positions of the poles of attenuation. If a magnetostrictive resonator is used it is embodied in the current dual of the circuit shown. The same principles are applied, but the " first " type of resonance becomes parallel resonance and the " second " type, series resonance.
Patent GB-1458524-A (GB)
Title: Turbine rotor discs
IPC: F01D5/34
Filed: 1973-05-14
Abstract: 1458524 Turbine rotors BRITISH LEYLAND UK Ltd 18 April 1974 [14 May 1973] 22930/73 Heading F1T A gas turbine rotor having blades 2 integrally cast with the hub 1 includes stress-relieving radial open ended slots 3 between at least some of the blades. The slots 3 terminate in holes 4 filled with rivets 6 of material similar to that of the hub.
Patent GB-186238-A (GB)
Title: A contrivance for automatically braking motor and other road or rail vehicles
IPC: B60T7/12
Filed: 1921-08-30
Abstract: 186,238. Beilby, W. Aug. 30, 1921. Actuated or applied by weights.- Means for applying the brakes on vehicles when descending an incline, comprises a weight 9 secured to a, sleeve 8 which slides on an arm 7 projecting from a part 6 mounted upon a shaft 5 and abutting against a toothed sector 4 geared to the wheel 3 which actuates the brakes through the connection 15. The weighted arm is normally supported on members 11 by studs 13 which slide off these members when the vehicle is on an incline so that the arm falls and applies the brakes. The supports 11 are pivoted at 11<1> to permit the passage of the studs 13 when resetting the apparatus.
Patent GB-1210546-A (GB)
Title: Method and apparatus for purifying liquid
Inventor: ZALLES ROBERT IGNATIUS
IPC: C02F1/00
Filed: 1968-05-14
Abstract: 1,210,546. Purifying liquids by distillation; desalination of sea water. R. I. ZALLES. 14 May, 1968 [19 May, 1967], No. 22951/68. Heading B1B. Liquid, e.g. sea water or sewage, supplied through valve 38, is heated to about 30‹C above ambient temperature in, heater 33 and is then fed through conduit 35 to a thick, porous layer of fibrous material 11 wherein the liquid forms thin films on the fibres, and air or other gas, supplied by blower 34 to central chamber 30, is directed transversely through the porous layer so that it evaporates some of the liquid flowing over the fibres. The mixture of air and vapours flows to condenser 41; and the condensate, i.e. purified liquid, is withdrawn through conduit 42. In the apparatus shown, the porous layer has a ring-shaped crosssection; it may be made of cotton gauze, and the layer should preferably be at least 0.5 inches thick. The conduit 35, which supplies liquid to the upper part of the porous layer, has a serpentine shape and is perforated with orifices 36. The air may also be preheated in unit 33. Non-evaporated feed liquid is withdrawn from the apparatus through valve 23. In a modified arrangement, the vapours may be condensed on the inner surface of shell 15, around which cooling tubed are disposed. Also described is an apparatus for the desalination of sea water on a large scale, wherein a succession of pans, containing porous material wetted with sea water, moves on rollers through a chamber while air is blown through open-mesh screens in the bottom of the pans. The air may be heated in a series of opaque pipes exposed to the rays of 'the sun. The layer of fibrous material may be replaced by a layer of open-cell foamed or other cellular material.
Patent GB-876957-A (GB)
Title: Improvements in supercharged internal-combustion engines having exhaust-driven turbines
IPC: F02B37/00
Filed: 1960-06-30
Abstract: 876,957. Charge pumps. CESKOSLOVENSKI ZAVODY NAFTOVYCH MOTORU PRAHA, NARODNI PODNIK. June 30, 1960 [July 14, 1959], No. 23002/60. Class 7(2). In a diesel engine, nozzles 4 discharging individual cylinder exhaust gases via diffusers 6 and one-way valves 18 to a turbine 10 powering a charge air centrifugal blower (not shown) are surrounded by chambers 5 connected by pipes 12, 14 to each other and to the turbine outlet 16.
Patent GB-154738-A (GB)
Title: Improved means for reversing internal combustion engines
IPC: F01L13/00
Filed: 1919-09-18
Abstract: 154,738. Petters, Ltd., and Fetter, G. B. Sept. 18, 1919. Reversing.-In an engine in which fuel is injected into the combustion chamber at or near the end of the compression stroke, reversal is effected by means of two distance-pieces of different thickness, which are inserted between the fuel-pump plunger and the actuating-mechanism. The distance-piece for normal working is withdrawn to reduce the engine speed, and a thicker one is then inserted to give an earlier and longer stroke to effect reversal. In the form shown, the pump plunger 1 is actuated by means of a bell-crank lever connected to an eccentric-rod 27. The distance-pieces 2, 3 are carried by a spindle 4, the normal distance-piece 2 being hung on a vertical pivot 6 to allow it to move with the plunger, and' the piece 3 being hung on a pin 7 and connected to the piece 2 by a spring 8 and provided with an adjustable weight 9. The spindle 4 is turned by means of a handle 13 on a finger-piece slidable on the spindle and provided with arms 11 on either side of an extension 22 on the eccentric rod 27. When reversal is to be effected, the handle 13 is turned to withdraw the distance-piece 2 and to move the arms 11 to the middle position. The spindle 4 is then rocked by the action on one arm 11 of beaks 23, 24 on the extension 22 of the eccentric-rod 27, which has an elliptical movement, the beak 24 being cushioned by a spring to allow it to yield on the downward movement. The arm 11 is depressed and released at each revolution, and when the engine slows down, the movement of the arm 11 lifts the distance-piece 3, through the piece 2 and spring 8, sufficiently to bring it over the pump plunger 1 and to cause a reversing-stroke to be given. The lower beak 24 then returns the arm 11 and the distance-pieces to the normal position shown. The movement of the piece 3 may be limited by a stop 28 on the piece 2 and by a fixed stop 29. The spindle 4 is retained in position for starting and for slowing down by an arm on the end of the spindle engaging recesses in a spring-controlled cam member. When another reversal is to be effected, the handle 13 is moved along the spindle 4 to bring the other arm 11 into position for engagement by the beaks on the opposite side of the extension 22.
Patent GB-597384-A (GB)
Title: Improvements in or relating to filters for fluids
IPC: B01D35/147
Filed: 1945-09-06
Abstract: 597,384. Filters. BRIGGS, S. W. Sept. 6. 1945, No. 23025. Convention date, Sept. 11, 1944. [Class 46] [Also in Group XXVIII] A cylindrical filter cartridge is made up of an arrangement of three kinds of discs, exemplified in Fig. 3, each filtering disc 27 being placed between a fluid-distributing disc 28 and a drainage disc 29. The disc 28 is formed with slots 36 and inlet channels 37 to facilitate passage of fluid to the filter disc 27, and the disc 29 is formed with fluid-discharge channels 42 each partly radial and partly disposed at an angle to the radius. The discs are assembled between plates 16, 17, Fig. 1, carried by a tube 15 which surrounds a perforated tube 4. The tube 4 is connected to a casing 1 and the plates 17, 18 are mounted between a plate 7 and a spring-pressed plate 8. A floating plate 19 underneath the plate 17 is connected by springs 23 to the tube 15 so that it remains in contact with the uppermost disc during contraction of the filter mass, as described in Specification 597,376. The filtering discs 27 may be of felted paper as described in Specification 580,834, and the discs 28, 29 are preferably also of pervious material, though the discs 28 may be of impervious, for example plastic, material. In a modification, the drainage discs are formed with slits instead of slots. When the flow of fluid is from the inside outwards, the slots or slits in each drainage disc are formed to terminate on the outer periphery and the inlet channels on each fluid-distributing disc are formed on the inner annulus of the disc.
Patent GB-1579771-A (GB)
Title: 1-thiazolyl imidazolidin-ones their preparation and use
IPC: C07D277/54
Filed: 1977-06-01
Abstract: A herbicidal composition contains, as active ingredient, at least one novel compound of the formula <IMAGE> in which the substituents are as described in Claim 1. Processes for the preparation of the novel compounds are described. The herbicide is suitable, in particular, for controlling weeds since it is not toxic to useful plants.
Patent GB-1435675-A (GB)
Title: Process for recovering fatty acids
IPC: C07C69/26
Filed: 1974-05-23
Abstract: 1435675 Fatty acid recovery AJINOMOTO CO Inc 23 May 1974 [31 May 1973] 23203/74 Heading C2C Fatty acids are recovered as their methyl esters from the product mixture of fatty acids and unreacted paraffins obtained by catalytic oxidation of paraffins with gaseous oxygen, by reacting the mixture with methanol and fractionally distilling the higher boiling methyl esters. The oxidation may be of paraffins of 10 to 35 carbon atoms in the presence of a manganese catalyst to give a product containing 20-50% fatty acids and unsaponifiable unreacted paraffin 80-50%. The reaction with methanol may be at 70-150‹ C. in the presence of an acid or cation exchange resin, and the methyl esters recovered may be converted to free acids and the higher boiling fraction may be separated to paraffins and esters by conventional saponification. Examples describe the treatment of products cf the oxidation of n-tetradecane, n-docosane, C 14 -C 21 , and C 13 -C 16  paraffinic straight chain mixtures and the recovery of methyl esters therefrom.
Patent GB-240166-A (GB)
Title: Improvements in and relating to electron discharge devices
IPC: H01J35/06
Filed: 1925-09-17
Abstract: 240,166. British Thomson-Houston Co., Ltd., (Assignees of Coolidge, W. D.). Sept. 17, 1924, [Convention date]. R÷ntgen-ray tubes; vacuum tubes. - In a tube having a tungsten cathode and a member such as an anode consisting of a metal, for instance uranium or thorium, having a higher electron emissivity than tungsten, an electrostatic device is so arranged about the cathode that an increase of space current due to an increased emission from volatilizable metal deposited on the cathode is suppressed. As shown, a spiral cathode 13 is mounted in a cylindrical focusing shield 14 of molybdenum, and the ends of the cathode areconnected to the shield and to a central rod 15 at points removed from the mouth of the shield. The main part of the cathode is located near themouth of the shield and is heated to a temperature of 2500‹ F. which is sufficiently high to prevent deposition of uranium. The cooler partsof the cathode on which a deposit of uranium may take place are subjected to a strong electrostatic field and the consequent increased emission is thereby controlled so as to have no effect on the space current. The rod 15 projects beyond the spiral so as to broaden the focus. A flange 18 on the shield protects the parts behind the cathode from ionic bombardment during exhaustion. Uranium and thorium may act as a gas absorbent. In a modification the ends of the cathode are connected to parts nearer to themouth of the shield than as shown, and theelectrostatic field at those parts is increased by forming the shield with an inturned flange and the rod with a disc-shaped flange. In a furtherarrangement the whole of the cathode is mounted at a distance from the mouth of the shield. The anticathode may consist of a target of uranium. brazed to a copper backing by an alloy consisting of 28 parts of copper and 72 parts of silver, a cooling tube being brazed behind the backing. Specification 109,358 is referred to.
Patent GB-234411-A (GB)
Abstract: 234,411. Haddan, R., (Postage Meters & Machines Co.). Feb. 26, 1924. Franking-machines. - A franking- die 308, of the kind provided with a number of printing-surfaces 1, 2 and 4 corresponding to stamps of different values, any one of which can be brought into operative position by turning the die on its axis 310, is locked in adjusted position by means of one or more sliding bolts 314 adapted to engage openings 308<n> in the die. The shaft 310 is mounted in bearings in a meter drum 300 and is turned by inserting a screwdriver in its end. The bolts 314 are fixed to a carrier 313 slidably mounted on the shaft 310. A plate 311 attached to the carrier bears against the inside of the drum, a clamping-bolt 311<a> being arranged to pass through a slot 312a in the casing. When withdrawn, the bolts engage holes 105<a> in a fixed hood 105 to lock the drum against rotation while the die is being adjusted. Holders for loose types.-Each printing-surface is provided with a slot to receive a date and hour slug 318, which is locked in position by turning a flat-sided rod 316 mounted in the die, the slug being recessed at the part opposite to the rod, and a ball catch being provided for holding the rod in position.
Patent GB-1005556-A (GB)
Title: Improvements in and relating to lighting fittings
IPC: F21V17/00
Filed: 1964-06-08
Abstract: 1,005,556. Electric lighting fittings. PHILIPS ELECTRONIC AND ASSOCIATED INDUSTRIES Ltd. June 8, 1964 [June 11, 1963], No. 23584/64. Heading F4R. A lighting fitting comprises a housing 10 having an opening 11 closed by a detachable cover comprising a frame 13 and a window 15 held in the frame by a packing 14, a gutter 23 projecting from the housing around at least part of the opening 11 the open side of the gutter facing a portion 27 of the frame which bears on the housing. The cover is secured in place by separable hinges 30 and clamps 31. The window 15 is held in a rubber packing 14 of U- shaped cross-section which is retained in the frame 13 by an inner frame 34 held in place by springs 35 which extend between an angle in the inner frame and an angle formed by a flange 28 on the portion 27 of the main frame. A lip 36 on the packing 14 rests against the front wall 26 of the gutter. The housing accommodates two low pressure metal vapour discharge lamps 16 supported by the end walls and the necessary operating glow 19. A reflector 22 to give the desired light distribution is provided.
Patent GB-1306413-A (GB)
Title: Rf energy primed tr switch
IPC: G01S7/03
Filed: 1970-05-15
Abstract: 1306413 T-R switches WESTINGHOUSE ELECTRIC CORP 15 May 1970 [15 May 1969] 23596/70 Heading H1D An electrodeless gas discharge tube 22 traversing a discharge gap 16 formed by portions 12 or 14 of opposite conductive walls of a wave transmitting means 10 to form a T-R switch is provided with capacitively coupled means 34, 38 for exciting an A.C. priming discharge in the gas. The tube 22 and reservoir 24 are filled with an electronegative gas 30. At least one of the halogen gases, chlorine in particular, is preferred. A discharge stabilizing ingredient such as oxygen, may be added. The gas pressure may be from 2 to 50 torr. A priming discharge is formed between a plate 34, connected to A.C. source 32, and a portion 38 of the waveguide 10. The plate 34, which may be embedded in the tube envelope, is mounted in a depression 36 to reduce the distance covered by primer electrons in diffusing to the region of the discharge gap 16. For the same reason cone 12 is shorter than cone 14 and may be completely eliminated.
Patent GB-1149366-A (GB)
Title: ª-substituted-ketones and processes for their preparation
IPC: C07D317/44
Filed: 1966-05-26
Abstract: 1,149,366. Ketones. BOEHRINGER INGELHEIM G.m.b.H. 26 May, 1966 [28 May, 1965], No. 23716/66. Heading C2C. Novel ketones of the general formula wherein R 1  represents a hydrogen atom or an alkyl group containing 1 to 4 carbon atoms, R 2  represents a hydrogen atom or a straight chain or branched alkyl group containing 1 to 6 carbon atoms and amine represents an unsubstituted or alkyl-substituted pyrrolidino or morpholino group, and non-toxic acid addition salts thereof, are prepared: (a) by the reaction of a halogenoketone of the general formula wherein Hal represents a halogen atom, with unsubstituted or an alkyl-substituted pyrrolidine or morpholine; (b) by the reaction of a nitrile of the general formula with methylenedioxybenzene, preferably in the presence of a Friedel-Crafts catalyst, followed by hydrolysis of the resulting ketimine; (c) by the reaction of an acid amide or nitrile of the general formula wherein Z represents a free or substituted carboxamido group or a nitrile group, with an organo-magnesium compound of the general formula followed by decomposition of the resulting organometallic complex by hydrolysis; (d) by the reaction of an α-aminoalkanol of the general formula with an oxidizing agent, preferably chromic acid or an alkali metal dichromate, serving to oxidize the secondary alcohol group to a carbonyl group; and (e) by the reaction of an epoxy ether of the general formula wherein Alkyl represents an alkyl group with 1 to 4 carbon atoms, obtained by reaction of the halogenoketones of the second general formula with alkali metal alkoxides, with unsubstituted or an alkyl-substituted pyrrolidine or morpholine; followed in any of the above methods by optional conversion to a non-toxic acid addition salt of the product. Specification 927,475 is referred to. Pharmaceutical preparations comprising at least one ketone of the first general formula above as active ingredient in association with a pharmaceutical carrier, have a strong stimulating effect on the central nervous system, coupled with low toxicity, and may be administered orally or parenterally.
Patent GB-222310-A (GB)
Title: Improvements in landing and housing arrangements for airships
IPC: B64F1/14
Filed: 1923-09-24
Abstract: 222,310. Uhlendahl, P. Sept. 24, 1923. Shelters for housing aircraft.-An airship landing place and shelter comprises a chamber b, capable of receiving the airship, mounted on a stage a capable of being lowered into a pit and having rail sections d which, when the stage is raised, join with rails e on the adjacent ground to form a circular track on which the chamber b may be rotated to set it in a suitable direction for the wind. The side walls g of the chamber are adapted to fold down, and the roof comprises hinged flaps which open and close automatically when the chamber is raised or lowered.