baber/WOPTO huggingface dataset:
Patent GB-171693-A (GB)
Title: Improved process of tanning and manufacture of agents therefor
IPC: C14C3/02
Filed: 1921-11-15
Abstract: 171,693. Gerb-und Farbstoffwerke A. Renner & Co., Akt.-Ges. Nov. 15, 1920, [Convention date]. Mineral tanning; combination tanning processes.-Hides are tanned with an arsenic compound which if insoluble in water has been rendered soluble or colloidal. Soluble compounds of arsenious acid, arsenic acid, sulpharsenious acid, sulpharsenic acid, phenylarsenic acid, diphenylarsenic acid or arsenophenol may be used directly as tanning-agents, but insoluble, compounds are mixed with an alkali salt of the corresponding acid, a sulphonic acid of a hydrocarbon, or a tanning-agent prepared by the condensation and sulphonation of a phenol and a hydrocarbon. Specification 169,758 is referred to. The following examples of the preparation of tanning-agents are given : (1) Ansenious acid is dissolved in caustic-soda solution; (2) the solution prepared in example (1) is mixed with chrome alum and any precipitate is filtered off; (3) a mixture of arsenious acid and an artificial tanning-agent prepared by sulphonating and condensing phenol and formaldehyde is dissolved in caustic-soda solution; (4) a mixture of phenylarsenic acid and arsenious acid is dissolved in caustic-soda solution, the resultant liquid being stirred and filtered; (5) a mixture of potassium sulpharsenite and aluminium sulphate is dissolved in water and the solution filtered; (6) a mixture of naphthalene sulphonic acids and arsenious acid is dissolved in caustic soda; (7) arsenic acid is dissolved in caustic-soda solution; (8) potassium sulpharsenite is dissolved in water; (9) an artificial tanning- agent prepared from phenol, formaldehyde and sulphuric acid is dissolved in water and arsenic acid added in the cold, any undissolved residue being dissolved by the addition of soda lye; (10) a mixture of phenylarsenic acid and #-naphthalene sulphonic acid is dissolved in water and the solution neutralized with sodium carbonate; (11) arsenophenol is sulphonated. dissolved in water and the excess acid neutralized; (12) diphenylarsenic acid and #-naphthalene sulphonic acid are heated together and the free sulphonic acid neutralized with sodium carbonate.
Patent GB-299316-A (GB)
Title: Improvements in high frequency electric signalling systems
IPC: H04B3/20
Filed: 1928-10-22
Abstract: 299,316. British Thomson-Houston Co., Ltd., (Assignees of Bird. L. F.). Oct. 21, 1927, [Convention date]. Thermionic modulating systems ; combined transmitting and receiving arrangements.-The parent Specification describes a combined transmitting and receiving wireless telephone station in which the oscillations of the transmitter are inhibited, except when the operator is speaking, by a control valve which has a negatively biassed grid and is located in the anode circuit of the oscillator. According to the present invention the speech circuits are rectified before being used to neutralize the negative grid bias of the control valve. The control valve is thus prevented from momentarily acting as a modulator when speech begins; initial distortion of words is therefor avoided and smaller condensers can be used for smoothing the positive potential applied to the control grid. The oscillation generator 1 acts through a high frequency amplifier 4 and transformer 5 on a line or aerial system 7, and the outgoing oscillations are modulated through the modulator 19 by speech currents coming through the transformer 18 from the microphone 16. A receiving apparatus 28 is connected through the hybrid transformers 5, 17. Inhibition of the outgoing radiation is effected as follows :-The plate circuit of the oscillator 1 extends via the high tension battery 9 through the filament and plate F10 , P10 of the control valve 10 to the filament F1 of the oscillator via the conductor 11. The grid G10 of the control valve is negatively biassed by the battery 23, so as to block the above circuit except when the battery 23 is opposed by a potential drop, due to speech currents, in the resistance 24. Such currents pass from the microphone 16 through the transformer 18 to the amplifier 20, the output of which is rectified at 22 so as to produce the required potential drop in the resistance 24. Smoothing condensers 25, 26 are provided, and these may be of smaller capacity than those shown at 23 in the drawing accompanying the parent invention.
Patent GB-873063-A (GB)
Title: Improvements in or relating to fish-hook disgorgers
IPC: A01K97/18
Filed: 1959-09-08
Abstract: 873,063. Fishing disgorgers. SMITH, S., and DALTON, H. B. May 10, 1960 [Sept. 8, 1959], No. 30560/59. Class 48. A fish-hook disgorger comprises a plunger 4, longer than and slidable in a stem 1, and having a knob 5 on its outer end and a head 6, provided with a slot 7 and eye 8, at its inner end. A spring 9 draws the head 6 against a bellmouth 2 of stem 1. The plunger action is facilitated by using the finger rings 3. In action, knob 5 is first depressed to enable a fishing line (attached to a hook in a fish) to be passed into eye 8 through the exposed slot 7 and then released. Stem 1 is pushed down the throat of the fish and eye 8, guided by the line through it and aided by the inclination of head 6, is passed over the hook shank. The hook is then loosened and removed together with the disgorger.
Patent GB-288924-A (GB)
Title: A new or improved belt-fastener
IPC: F16G3/06
Filed: 1927-11-15
Abstract: 288,924. Billau, J. E. Nov. 15, 1927. Belt fastenings.-A bar a preferably tapered in cross section, is inserted between the turned-up belt-ends and projecting screws b, which may be integral with the bar or passed through a tapped hole therein, are passed through holes pierced in the belt ends and secured in place by nuts c preferably bar-shaped as shown. Where several fastenings are employed across the belt width, washers each extending on each side of the belt under two or more of the nuts may be used.
Patent GB-248866-A (GB)
Title: A new process for the preparation of amino dianthrimides
IPC: C09B1/48
Filed: 1924-12-19
Abstract: 248,866. British Dyestuffs Corporation, Ltd., Bunbury, H. M., and nobinson, 3EL. Dec. 19, 1924. Aminodianthrimides are obtained 'by condensing mono-oxamic acids of diaminoanthraquinone or their salts with halogen-anthraquinones and hydrolyzing the oxalyl or formyl derivatives obtained; the latter result from loss of carbon dioxide by the oxalyl derivatives. According to examples 4 : 5<1>- and 5 : 51-diamino-1 : 1<1>-dianthrimides are obtained by condensing 4- or 5- benzoylamino-1-chloranthraquinone with 1: 5-diaminoanthraquinone mono-oxamic acid or its barium salt in nitrobenzene in presence of sodium acetate and copper powder and hydrolizing the products with sulphuric acid of 70 per cent strength. The mono-oxamic acids are obtained from the diaminoanthraquinone and oxalic acid.
Patent GB-778710-A (GB)
Title: Improvements in eddy current braking devices
IPC: H02K49/04
Filed: 1954-10-13
Abstract: 778,710. Eddy-current brakes. COMPAGNIE TELMA. Oct. 13, 1954, No. 30678/56. Divided nut of 778,707. Class 35. An eddy-current brake comprising a stator disposed between two magnetic rotary rings, at least the parts of the rings facing the stator pole pieces having holes for the passage of cooling, as shown, air is drawn through the holes 25, which may be oblique as shown for the right-hand ring E, by fan blades 21.
Patent GB-339409-A (GB)
Title: Improvements in air charging pumps for internal combustion engines
IPC: F02B33/00
Filed: 1929-10-10
Abstract: 339,409. Seeley, F. G. Oct. 10, 1929. Driving pumps, blowers, and exhausters; fixedabutment type.-An air pump for supplying the charge to an internal-combustion engine consists of a vane 2 linked to the crosshead or piston. Two charges are supplied for each rotation of the crank shaft.
Patent GB-855278-A (GB)
Title: Cathode-ray storage tube
IPC: H01J31/60
Filed: 1959-09-09
Abstract: 855,278. Cathode-ray storage tubes. HUGHES AIRCRAFT CO. Sept. 9, 1959 [Oct. 1, 1958], No. 30850/59. Class 39(1). A storage tube of the kind in which a beam of flood electrons 50 renders a charge pattern stored on a storage electrode 26 visible on a viewing screen 28, is provided with an electron impervious shield member 52 to surround the flood beam and to intercept electrons in the peripheral portions of the beam. The member 52 may be welded to the collector electrode support ring 42 as shown or to the target support ring 38 or may serve as the shroud ring for either the collector or target mesh. Alternatively the member 52 may be formed as an integral peripheral portion of either the collector or storage mesh. In another embodiment the shield member 52 is welded to the collimating electrode 22.
Patent GB-533801-A (GB)
Title: An improved regulating nozzle for fire-extinguishing and other purposes
IPC: B05B1/16
Filed: 1939-11-27
Abstract: 533,801. Nozzles. WERTHEIMER, H. Nov. 27, 1939, No. 30871. [Classes 69 (iii) and 135] A regulating nozzle for fire-extinguishing &c. in which either a solid jet or an annular spray can be produced is provided with a movable valve member comprising a double cone 7, 8 united by a cylindrical part 9 engaging a nozzle member comprising two hollow cones 4, 5, the inner having a greater slope than the outer. The valve member is attached by wings 6 to a supply pipe 1 by screws 11 the heads of which engage a screw surface in a rotatable sleeve 13 attached to a collar 19. The spray diffuser is formed by a flange 16 on the mouthpiece 3 engaging a rotatable collar 17 screwed on the sleeve 13. This sleeve is provided with a rubber seating 16 for engaging the flange 16 and supply of liquid is regulated by turning the ring 17 liquid being admitted to the spray annulus through staggered elongated openings.
Patent GB-1432967-A (GB)
IPC: C07D227/00
Filed: 1973-06-28
Abstract: 1432967 1,8-Naphthyridine derivatives CHINOIN GYOGYSZER ES VEGYESZETI TERMEKEK GYARA RT 28 June 1973 [29 June 1972] 30899/73 Heading C2C Novel 1,8-naphthyridine derivatives of the formula or a tautomer or acid addition salt thereof, wherein R 1  and R 2  are hydrogen, halogen, alkyl, aryl, substituted alkyl or aryl, aralkyl, alkoxy, aryloxy, aralkoxy, amino, acylamino, alkylamino, dialkylamino, a nitrogen containing monocyclic heterocyclic group which is attached to the diazanaphthalene group through its nitrogen atom, acyl, alkoxy-carbonylalkyl, alkoxycarbonyl or a derivative of a carboxylic acid; R 3  is alkyl aryl, aralkyl, hydroxyl, alkoxy, amino, acylamino or halogen; R 4  is hydrogen, alkyl, aryl, aralkyl, halogen, nitro, alkoxy, hydroxy, amino, acylamino or a carboxylic acid derivative provided that (a) when R 1  is alkoxycarbonyl, then R 2  is not hydrogen or alkyl, and (b) when R 1  R 2  and R 4  are not all hydrogen when R 3  is alkyl, are prepared by isomerizing a compound of the formula The isomerization reaction is preferably performed under thermal conditions at a temperature of from 150‹ to 400‹ C. in the presence of an inert solvent, e.g. diphyl oil, paraffin oil or a mineral oil fraction.
Patent GB-291293-A (GB)
Title: Improvements in screw propellers
IPC: B64C11/00
Filed: 1927-11-17
Abstract: 291,293. Loftheim, T. B. Nov. 17, 1927. Screw propellers. - A two-bladed screw propeller is of S-form with the leading edges discontinuous and relatively thick as indicated at x x, and y y. Dihedral or pyramidal ribs 3 are provided on the channelled surface. The boss is prolonged on the rear side of the propeller and has backwardlly projecting wings 2.
Patent GB-505623-A (GB)
Title: Improved method and means for trapping and destroying submarines
IPC: F42B22/24
Filed: 1937-11-11
Abstract: 505,623. Trapping and destroying submarines. CRAVEN, T. A. Nov. 11, 1937, No. 30926. [Class 9 (ii)] Apparatus for trapping and destroying submarines comprises buoys K between which is secured a sectional buoyant bar H supporting, by means of spring clips J, a detachable net A. The net is connected by a cable F to a projectile or depth charge B normally housed in a carrier (' located midway between the sections of the bar H, the arrangement being such that, when the apparatus is fouled by underwater craft, the net becomes detached from the bar and its moorings, whereupon the drag of the engaged net releases the projectile or depth charge from its carrier, and the net and projectile become a single independent unit. The projectile carrier comprises a main body C of reinforced cork and a pair of inflated rubber cushions D which hold the projectile in position until they are deflated by a pull on the cables X connecting the net with the release valves E. The buoys K may be anchored as shown or, alternatively, the device may be towed astern of a vessel, in which case the rearmost buoy is fitted with a reverse propeller which comes into operation on the net being fouled thereby acting as an anchorage for the loose end of the apparatus until the net has been detached and the projectile discharged. This propeller is driven by an electric motor energized by a battery L, Fig. 7, in the buoy, a plug and jack M in the electrical circuit being connected by a cable N with the net so that a pull on this cable withdraws the plug and completes the motor circuit. Each buoy is connected to the bar H by an axle-shaft 0 fitted into a watertight bearing P and carrying a spring loaded stop Q capable of a limited movement between fixed abutments.
Patent GB-249598-A (GB)
Title: Improvements in or relating to mechanically operated signalling apparatus
IPC: G08B7/02
Filed: 1924-12-24
Abstract: 249,598. Cave, J. Dec. 24, 1924. Visible non-luminous signals. - A combined audible and visible signalling device particularly for use in bathrooms comprises a rotary shaft 9, Fig. 5, which is given apart turning movement bv a pull on a cable &c., and is restored by a spring, the movement of the shaft serving to rotate through gearing 8, 7, 6 the hammers of bells 2 and at the same time to release a visible signal 21. The signal 21 is normally held in the position shown by a catch 23 on the shaft 9 engaging a pin 22 on the signal shaft 19, the catch 23 having a small spring-controlled pin-and-slot connection with the shaft 9 so that when the signal is restored by hand the pin 22 rides up a cam surface on the catch 23 against the action of the spring which then serves to effect the normal relation between the pin and catch. Two sets of apparatus may be combined in one casing, the ratchet wheels 8 on the shafts 9 both gearing with the common pinion 7 to sound the bells 2, the parts of the wheels 8 normally adjacent to the pinion 7 being cut away so that the rotation of one wheel 8 will not be transmitted to the other. The cable-operating means, Fig. 8, comprises a tubular rod 32 mounted on spring-controlled pivoted arms 29 co-operating with fixed stops 30, the arm shown being mounted in a bracket which is formed as a hollow casing 28<a> containing a quadrant 34 to which the cable 11 is secured and a guide pulley 36. The cable 11 passes to the signal mechanism through guide tubes having junction boxes fitted with guide pulleys.
Patent GB-1465275-A (GB)
Title: Apparatus for controlling the air/fuel ratio for a combustion  engine
IPC: F02M69/22
Filed: 1974-05-15
Abstract: 1465275 Apparatus for controlling air-fuel ratio LUCAS INDUSTRIES Ltd 15 May 1974 [29 June 1973] 31084/73 Heading F1B The air fuel ratio for a combustion engine 10, especially an I.C. engine is controlled by a body 12 having a passage 13 for supplying air to the engine, the passage 13 defining a valve seat 15 from which a plate valve 16 is movable by air-pressure upstream thereof and towards which the plate valve is urged by a temperature sensitive element 18, a fuel supply passage 24 communicating with air passage 13 downstream of plate valve 16 and through which flow is allowed to increase by a valve 21 in response to movement of the plate valve 16 away from seat 15 and a fuel spill valve 28, 29 upstream of the control valve 21 and responsive to a pressure decrease downstream of the plate valve 16 to increase the fuel spill rate. Passage 13 is by-passed by a passage 26 into which fuel passage 24 and an exhaust gas recirculation passage 32 with a constriction 33 open, the exhaust gas helping to atomize and vaporize the fuel. The air-pressure downstream of plate valve 16 acts on a bellows unit 31 to bias the diaphragm 29 to close the spill valve.
Patent GB-1310215-A (GB)
Title: Herbicidal composition
IPC: A01N47/34
Filed: 1971-07-02
Abstract: 1310215 Herbicidal compositions KUMIAI CHEMICAL INDUSTRY CO Ltd 2 July 1971 [16 July 1970] 31162/71 Heading A5E A herbicidal composition comprises a mixture of an S-(chlorobenzyl)-N,N-dialkylthiocarbamate of general formula I and 3 - (3,4 - dichlorophenyl) - 1 - methoxy - 1 - methylurea of formula II in which formulae R is a C 1 -C 4  alkyl group. Mixtures of the two compounds show a synergistic effect as compared with the compounds used separately. The compositions may be applied in the form of granules, powders, wettable powders and emulsions and are useful in, e.g. paddy fields, soyabean fields, cotton or wheat fields. Typical thiocarbamates are S - (4 - chlorobenzyl) - N,N - diethylthiocarbamate, S - (4 - chlorobenzyl) - N,N - dimethylthiocarbamate, S - (4 - chlorobenzyl) - N,N - diisopropylthiocarbamate, S - (2-chlorobenzyl)- N, N - diethylthiocarbamate and S - (2 - chlorobenzyl ) - N,N - diisopropylthiocarbamate.
Patent GB-634991-A (GB)
Title: Improvements in mower attachment for tractors
IPC: A01D34/24
Filed: 1946-10-21
Abstract: 634,991. Tractor-drawn mowing-machines. FERGUSON, Inc., H. Oct. 21, 1946, No. 31175. Convention . date, Oct. 19, 1945. [Class 6(iii)] A mower attachment for a tractor having pivotal draft link means at its rear end is connected to the power lift device of the tractor and comprises the combination of a frame structure, a mower bar projecting laterally from said frame structure and pivoted thereto for vertical swinging of said bar, and actuating means automatically operable in response to the lifting of said frame structure by the draft link means for swinging said bar upward relative to said frame structure. The draft  links 15 pivoted at 16, are suspended by a pair of pivoted drop links 17 which are raised by a rock shaft 19 and crank arms 18. At the rear of the links 15 a first frame 21 is attached which includes a transverse bar 22 having mounted thereon a pair of uprights 25 between which a top link 26 is pivotally mounted, said top link having associated therewith a check chain 26a to limit the downward movement of the frame. A casting 35 connects the first frame with a second frame to allow the latter to swing horizontally or vertically to the first frame. On the second frame a supporting arm 43 is rigidly mounted having on its outer end a yoke 44 with means thereon to adjust the pitch. A pulley 59 driven from the power shaft 57 of the tractor actuates the mower bar 45 through a belt 60 pulley 61 and pitman 63. The knife is raised by a chain 68 attached to a clip 55 eccentrically placed with reference to the front connection of the lifting links 15 so that when the latter are raised, thereby raising the two frames, the chain passes round a guide sheave 80 and pivots the knife about the point 48, through a depending lever 73 abutting against a stop 74.. When it abuts against a stop 75 on the yoke 44 the knife will not be tilted further, and the second frame will then be lifted about its pivotal connection 35-compare Figs. 4 and 5 (not shown) with reference to the arm 43. The mower 45 is swung into the fully raised position of Fig. 5 by manual means. A slipping drive shaft 58 includes a square shaft 90 and a complementary socket 91 in a shaft 92. Universal joints 93, 94 connect them to the shaft 57 and pulley 59. The drive is interrupted when the shaft 58 is elongated-by break out or lifting- as the shaft 90 is short with respect to the socket 91. Ready re-engagement is provided by two telescoping sleeve portions. Break out on meeting an obstruction is provided for by a latch 84 on a pair of links 85, 86 (for construction see Fig. 7 not shown). Specification 470,069 is referred to.
Patent GB-299708-A (GB)
Title: Improvements in or relating to means for atomizing liquid fuel or for disintegratingand conveying powdered fuel to burners
IPC: F23D11/04
Filed: 1928-10-27
Abstract: 299,708. Ges. f³r Rationelle Verbrennung. Oct. 29, 1927, [Convention date]. Pneumatic conveyers. - Apparatus for atomizing liquid fuel or for conveying pulverulent fuel comprises a casing 1 provided with a 'partition 2 having circularly disposed inclined apertures 3, in front of which is mounted a freely rotating disc 6 provided with similar apertures 7. Solid or liquid fuel is led through a pipe 8 to the space between the discs. Air passing through the apertures 3 rotates the disc and fuel is carried to the edge by centrifugal force and is thence carried through the passages 6. If granular fuel is employed additional disintegration takes place between the discs 6 and 2. The fuel may be mixed with both air and gas in which case a number of the apertures 3 may be connected with gas supply pipes 11.
Patent GB-604007-A (GB)
Title: Treatment of well-drilling fuids
IPC: C09K8/20
Filed: 1945-11-20
Abstract: 604,007. Well drilling fluid. DEHN, S. G. (National Lead Co.). Nov. 20, 1945, No. 31229. [Class 85] In a well drilling fluid, a thin boiling starch, prepared by the treatment of starch with oxydizing agents or acids, is added to the fluid in sufficient quantities so that a water seal of low water loss is formed. The starch may form part of a dry powder mixture, including a water dispersible solid such as clay or bentonite.