baber/WOPTO huggingface dataset:
Patent GB-476821-A (GB)
Title: Improvements in and relating to liquid-blast electric circuit breakers
IPC: H01H33/98
Filed: 1936-07-31
Abstract: 476,821. Liquid - blast switches. BRITISH THOMSON-HOUSTON CO., Ltd. July 31, 1936, No. 21301. Convention date, Aug. 1, 1935. [Class 38 (v)] A circuit-breaker comprising fixed, intermediate, and movable tubular contacts coaoting in an explosion pot and arranged to form two breaks in series, the arc at one of the breaks creating pressure within the pot for driving a blast of quenching-liquid through the arc at the other break, has the intermediate contact provided with a passage for transmitting pressure from the pot to the interior of the tubular contact, thereby to cause preliminary acceleration of liquid in the path of the blast created by the pressure-generating arc prior to separation of the tubular and intermediate contacts. The fixed and intermediate contacts 1, 2 are mounted and guided in insulating plates 10, 15, respectively, and urged by springs 13, 14, respectively, in the direction of the tubular, movable contact 3. In opening circuit, contacts 1, 2 separate first and draw an arc in the pressure chamber 16, which arc acts by means of apertures 15<1> to drive a radial blast of oil (or other insulating or arc-extinguishing liquid) into the main arc produced in chamber 17 by the subsequent separation of 3 from 2. The latter has a passage 18 in alignment with the bore of 3, which passage allows the pressure in 16 to accelerate the oil in 3 before the main arc is formed, thus lowering the pressure therein and enabling the radial blast to be instantly accelerated to the velocity requisite for breaking the main arc as soon as it forms. Moreover, the passage 18 serves to minimize gas-formation and to relieve excessive pressures due to interruption of short circuits. The passage may, however, be provided with a valve which remains on its seating and enables sufficient pressure for extinguishing light-current arcs to be generated, but yields to relieve excess pressures and accelerate the oil blast in the case of heavy currents, Fig. 2 (not shown).. In Fig. 5, two passages are provided at 26 in the lower enlarged part of intermediate contact 2<11>, and apertures 31 in the movable contact 3 serve to decrease the resistance to quick acceleration of the blast. Contact 2<11> may be mounted, as shown, on an insulating plate 27 secured by insulated rods 28, or, Fig. 3 (not shown), it may be mounted on a plate 15 similar to that shown in Fig. 1. In Fig. 5, the fixed contact 1 is of magnetic material and is adapted to be attracted to a magnetic core 45 by the energization of a series coil 44, thereby initiating formation of the pressure-generating arc by light overloads, before the movable contacts 3 and bridge-member 41 are tripped open by the usual inverse time-limit relay. By thus building up pressure before the relay operates, a strong blast is assured with light currents, whereas with heavy currents the relay operates instantaneously to trip the breaker so that excessive pressure is not set up in the pot.
Patent GB-702792-A (GB)
Title: Improvements in or relating to apparatus for developing photographic sensitised material
IPC: G03D7/00
Filed: 1951-09-11
Abstract: 702,792. Photographic developing apparatus. OZALID CO., Ltd., and BRIDGEWATER. W. R. Aug. 26, 1952 [Sept. 11, 1951], No. 21408/51. Class 98(2) Apparatus for developing photographic sensitized material (e.g. diazotype material) by exposure to moist alkaline vapours, in which an endless band of gas-permeable material which absorbs the vapour is traversed across an opening formed in the top of the development chamber 10 and development is effected by transporting the sensitized material in company with the band by means of a second endless band 24 surmounting the gaspermeable band and forming a nip between the bands through which the exposed material is passed, is characterized in that the gas-permeable band 12 is located within the development chamber 10 and has an upper lap passing under the opening 11 in the top of the chamber. Band 12 is guided by a dished guide 13 and a roller 16 mounted within chamber 10, and is centred by plates 18 carried by rods 17. Developing solution is fed from outside into a slotted tube 19 and vaporized by a heater 21. The transport band 24 is preferably of material not pervious to gas, e.g. rubber, and is mounted on rollers 25, 26, of which one is driven. Band 12 becomes impregnated with gas, and exposed material is fed between the bands with the sensitized surface facing band 12. Specifications 401,406, 495,392 and 598,921 are referred to.
Patent GB-572276-A (GB)
Title: Improvements in and relating to centre heads for centre squares and the like tools or instruments
IPC: G01B3/56
Filed: 1943-12-21
Abstract: 572,276. Centre squares. MOORE & WRIGHT (SHEFFIELD), Ltd., and MORRISON, A. E. Dec. 21, 1943, No. 21433. [Class 97 (iii)] In measuring instruments comprising a centre head adjustable along a rule in which the centre head is provided with a slot-to take over the rule in such a manner that the angle formed by the arms of the centre is accurately bisected by the edge of the rule inaccuracies due to wear are offset by means of eccentric rollers 13a mounted in the centre head and adjustable about their axes to bring the bisector of the angle and the edge of the rule into coincidence. The eccentric rollers 13a are locked in adjusted position by means of a screw 12, 14 drawing the roller face against a shoulder 16 on the bearing. The usual clamping means is provided comprising a olamp bolt 8 passing through the centre head and engaging a groove 17 in the rule and having a knurled nut 9. A release spring 10, together with a screw 11, are provided to enable the clamp bolt to be moved to hold the centre head in reverse position.
Patent GB-671901-A (GB)
Title: Improvements in and relating to load compensating networks
IPC: H03J3/08
Filed: 1950-08-31
Abstract: 671,901. Impedance networks. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 31, 1950 [Sept. 17, 1949], No. 21549/50. Drawings to Specification. Class 40 (viii). [Also in Group XL (c)] The effect of variations in the impedance of a load connected across a parallel tuned circuit is minimised by coupling over a capacitor, Fig. 2 (not shown), having a reactance at the resonant frequency equal to the geometric mean of the extreme values which the impedance can take. The tuned circuit may be fed from the last I.F. amplifier of a receiver (see Group XL (c) and the load may be a crystal rectifier. The apparent impedance of the tuned circuit may be increased by connecting the capacitor to a tap on the inductor, Fig. 5 (not shown), or decreased by tapping the feed point down the inductor, Fig. 6 (not shown). The effect of the stray capacity may be reduced by shunting the load with an inductor, Fig. 7 (not shown).
Patent GB-475597-A (GB)
Title: Improvements in or relating to collecting apparatus for cigarette or the like making machines
IPC: A24C5/32
Filed: 1936-08-05
Abstract: 475,597. Cigarette-making or like machines. QUESTER. C., and QUESTER, K., (trading as KOLNER WERKZEUGMASCHINENFABRIK VON W. QUESTER). Aug. 5, 1936, No. 21592. [A Specification was laid open to inspection under Sect. 91 of the Acts, Feb. 11, 1937.] [Class 130] Cigarettes or the like carried by a high-speed conveyer are braked by a stop which moves into the path of the cigarettes leaving the band, while travelling in the same direction and at the same speed as the cigarettes ; thereafter the speed of the stop in this direction is gradually reduced to zero. In the construction shown, the cigarettes are separated into lines having their mouthpieces in the same direction and are carried by belts 19, 20 towards a collecting band 25. The cigarettes are braked by stops 15, 15<1> mounted on a link 9 connecting a pair of parallel crank devices 6, 8, 6<1>, 8<1> of adjustable crank-radius. To permit operation with cigarettes of different sizes the stops are adjustable, relatively to one another, in directions parallel to and at right-angles to the belts, the distance between which can' be adjusted. To prevent the cigarettes slipping on the belts, rotating rollers or brushes may be provided above the belts, or the cigarettes may be gripped between the belts 19, 20 and additional belts above them.
Patent GB-1576646-A (GB)
Title: Derivatives of amidoximes
IPC: A01N43/08
Filed: 1978-05-23
Abstract: The derivatives of the formula <IMAGE>  in which:   R represents a hydrogen atom or an alkyl radical containing from 1 to 4 carbon atoms,   A represents a cyano group or a radical of formula <IMAGE> in which R1 and R2, which are identical or different, each represent a hydrogen atom, an alkyl radical containing from 1 to 4 carbon atoms, an optionally substituted phenyl radical or an amino radical which is itself optionally substituted, can be used in agriculture as phytohormones and herbicides.
Patent GB-296194-A (GB)
Title: Improvements relating to bobbins
IPC: B65H75/14
Filed: 1927-08-18
Abstract: 296,194. Wilson, W. B., and Wilson & Co. (Barnsley), Ltd. Aug. 18, 1927. Bobbins. - The plate, by which the bottom flange of a bobbin is reinforced, is so constructed that it can be securely fixed in a. recess therefor by a simple pressing operation. The plate A may be dome-shaped, corrugated, dished, or otherwise bent as shown, for example, in Figs. 3 and 4, and may be provided with barbs, teeth, or the like a, Fig. 7, so that by pressure it is flattened and the edges or barbs forced into an undercut recess as shown in Fig. 11. The plates may be formed with an internal Range a<1>, Fig. 10, with or without barbs or the like thereon, adapted to be pressed into the barrel or end portion.
Patent GB-916259-A (GB)
Title: Deviation counter
IPC: G06F7/62
Filed: 1961-06-16
Abstract: 916,259. Electric selective signalling systems. BECKMAN INSTRUMENTS Inc. June 16, 1961 [Sept. 2, 1960], No. 21774/61. Class 40 (1). [Also in Group XIX] Apparatus for measuring deviation from normal of a frequency or time-duration between events comprises a counter which can be set to a predetermined number and is then operated in reverse, the attainment of zero changing the counter to forward operation. To measure frequencydeviation switches 12 are set to upper position and the normal frequency N 1  is set up over selectors 31 on counter 30. The test frequency is applied through input 10 to signal gate 17 which is opened through gate control circuit 18 and digital divider 19 by clock pulses from 16 for a predetermined time. During this time the test frequency runs counter 30 in reverse. If a number remains in the counter at the end of the operation it indicates by how much the frequency falls short of the norm. On the other hand if the counter 30 reaches zero a control circuit 32 operates to cause the counter to operate forwardly. The final registration then indicates excess. The sign of the final registration is indicated by the condition of control circuit 32. To measure deviation from a standard time for a number of input pulses, the standard time in terms of clock pulses is set up at 31 and the switches 12 are reversed. Selectors 31 are in the form of a 4-back switch for each denomination, Fig. 4, whereby a combination of leads 131-138 is marked to set up a binary-decimal cascade counter, Fig. 5. According to whether control circuit marks lead 34 or 35 so one or the other side of each stage is connected to the input of the next to provide forward or reverse counting. Transfer and resetting is of known type.
Patent GB-1347838-A (GB)
Title: Preparation of 2,4,6-2,4,6-hexanitro-diphenylamine
IPC: C06B/
Filed: 1972-05-10
Abstract: 1347838 Hexanitrodiphenylamine FRANCE ARMED FORCES MINISTER OF 10 May 1972 [18 May 1971] 21807/72 Heading C2C A process for the preparation of 2,4,6,2<SP>1</SP>,4<SP>1</SP>,6<SP>1</SP>-hexanitrodiphenylamine comprises a first nitration stage in which 2,4,6-trinitrodiphenylamine is nitrated to pentanitro-diphenylamine with nitric acid having a concentration of from 45 to 65% by weight using a nitric acid: trinitro-diphenylamine weight ratio of 4 to 10 at a temperature of from 70‹ to 90‹ C., nitration being terminated after 1 to 3 hours and a second nitration stage in which the pentanitro-diphenylamine obtained is nitrated to 2,4,6,2<SP>1</SP>,4<SP>1</SP>,6<SP>1</SP>-hexanitro-diphenylamine with nitric acid having a concentration of from 90 to 100% by weight using a nitric: pentanitrodiphenylamine weight-ratio of from 4 to 10 at a temperature of from 50 to 70‹ C., nitration being terminated after ¢ to 3 hours.
Patent GB-1104936-A (GB)
Title: Substituted benzimidazole-(1)-carboxylates
Inventor: BURTON DENNIS ERNEST
IPC: C07D235/10
Filed: 1964-05-27
Abstract: Novel compounds of the general formula <FORM:1104936/C2/1> (wherein X represents CF3 or C2F5, R1, R2, R3 and R4 are the same or different and represent H, halogen, alkyl, substituted alkyl, OH, alkoxy, NO2, CN, thiocyano, isothiocyano, azido, COOH, carboxylic ester or amide, N-mono- or di-substituted carboxylic amide, NH2, mono- or di-substituted amino, SH, alkylthio or oxygenated derivatives thereof, sulphonic acid, ester, amide or substituted amide, or a heterocyclic ring attached through a nitrogen atom thereof, and R5 represents alkyl, substituted alkyl, aryl or substituted aryl) are prepared by reacting a chloroformate R5OCOCl with the corresponding 1-unsubstituted compounds in the presence of a base or with a preformed alkali metal derivative of the 1-unsubstituted compound.ALSO:Biocidal compositions contain, in association with a carrier, compounds of the general formula <FORM:1104936/A5-A6/1> (wherein X represents CF3 or C2F5, R1, R2,R3 and R4 are the same or different and represent H, halogen, alkyl, substituted alkyl, OH, alkoxy, NO2, CN, thiocyano, isothiocyano, azido, COOH, carboxylic ester or amide, N-mono- or di-substituted carboxylic amide, NH2, mono- or di-substituted amino, SH, alkylthio or oxygenated derivatives thereof, sulphonic acid, ester, amide or substituted amide, or a heterocyclic ring attached through a nitrogen atom thereof, and R5 represents alkyl, substituted alkyl, aryl or substituted aryl) with or without other active ingredients such as herbicides (e.g. 2 - methyl - 4 - chlorophenoxyacetic acid, 2,4 - dichlorophenoxyacetic acid or a triazine), insecticides (e.g. DDT or the material sold under the registered Trade Mark "Sevin") or fungicides (e.g. a dithiocarbamate).
Patent GB-849575-A (GB)
Title: Improvements relating to dry shavers
IPC: B26B19/10
Filed: 1958-07-08
Abstract: 849,575. Dry shavers. HEYEK, G. July 8, 1958 [July 12, 1957], No. 21871/58. Class 131 In a dry shaver head having a "closed" shavertype cutter formed by an arched perforated shear plate and a reciprocated inner blade, and an "open" clipper-type cutter formed by a row of teeth on an edge of the inner blade co-acting with cutting teeth on the shear plate, the shear plate is of resilient flexible foil and a bar is provided at one or each side of the head beneath which an edge of the shear plate passes, the projecting edge of the plate carrying the row of cutting teeth which are pressed resiliently against the coacting teeth of the inner blade 11. As shown, in Fig. 1, bars 3 mounted on end walls 2 of the casing have projections 4 engaging apertures 5 in the shear plate 6 to hold the plate arched for cutting co-operation with cutting edges of blades 15 pressed up from an arched plate 12 secured to a flat plate 13. The margins 7 of the shear plate are slotted at 8 and bent along the line 9 to provide teeth 10 co-operating with teeth 16 formed on the plate 13. The shear plate may press against the blades 15 only under shaving pressure, when pressure between the teeth 10 and 16 may be reduced to eliminate friction. As shown in Fig. 3 the plate 13 is apertured at 17 to receive the drive shaft 26 and is spring-urged against the sheer plate which is carried by a removable cap 22, hooks 29 being provided to retain the inner blade when the shear is removed. In modifications the teeth 16 are formed in the edges of the arched plate 12 and the springs urging engagement of the cutting parts are supported on lugs projecting from the removable cap.
Patent GB-1145403-A (GB)
Title: Method of gear shaving
IPC: B23F19/06
Filed: 1966-05-17
Abstract: 1,145,403. Gear-finishing. LEAR SIEGLER Inc. 17 May, 1966 [1 June, 1965], No. 21888/66. Heading B3K. A method of shaving gears comprises using a cutter having teeth with grooves extending generally in the plane of rotation of the cutter, the sides of the grooves intersecting the tooth flanks to form cutting edges having substantially equal included angles of at least 90 degrees, driving the gear or cutter in a single direction and effecting relative movement to shave both sides of all teeth of the gear substantially uniformly. The cutter may be shaped to crown the gear. The grooves may lie on helical lines or be otherwise displaced from one another. The cutter may be rotated and axially or diagonally traversed to produce a " climb " cut or a " conventional " cut on the tooth flanks. Plunge-cutting may also be effected. The gear or cutter may be fed at each end of a traverse. No reversal of rotation is necessary during an operation but reversal should be effected at intervals during the cutter's life to. ensure even wear. The cutter teeth are formed with a longitudinal cavity. Reference has been directed by the Comptroller to Specifiications 978,528 and 1,030,270.
Patent GB-875602-A (GB)
Title: New iminodibenzyl derivatives
IPC: A61K31/00
Filed: 1959-06-25
Abstract: The invention comprises compounds of the formula <FORM:0875602/IV (b)/1> (wherein A represents a straignt or branched chain saturated C2-C4 alkylene group in which at least two carbon atoms separate the nitrogen atoms to which A is attached, R represents a hydrogen atom or an acyl or a carbomoyl group of the formula -CO-NR1R2 where R1 and R2 are the same or different and represent hydrogen atoms or alkyl groups or, together with the adjacent nitrogen atom, represent a mononuclear heterocyclic ring, and n is 0, 1 or 2) and acid addition and quaternary ammonium salts thereof, and the preparation thereof by reacting a piperidine of the formula <FORM:0875602/IV (b)/2> with a compound of the formula <FORM:0875602/IV (b)/3> (wherein X represents a reactive ester residue) or, where R represents an acyl or carbomoyl group, by acylating or carbomoylating the appropriate hydroxy compound and, if desired, converting the products of any of these processes into their acid addition or quaternary ammonium salts.  The invention includes pharmaceutical compositions containing the products (see Group VI).  The compounds may also be prepared by reacting a compound of the formula <FORM:0875602/IV (b)/4> with iminodibenzyl.  The products are psychotonics, anti-histaminics and anti-emetics.ALSO:Pharmaceutical compositions containing compounds of the formula <FORM:0875602/VI/1> p  (wherein A represents a straight or branched chain saturated C2-4 alkylene group in which at least two carbon atoms separate the nitrogen atoms to which A is attached, R represents a hydrogen atom or an acyl or a carbamoyl group of the formula -CO-NR1R2, where R1 and R2 are the same or different and represent hydrogen atoms or alkyl groups or, together with the adjacent nitrogen atom, represent a mononuclear heterocyclic ring, and n is 0, 1 or 2) or acid addition or quaternary ammonium salts thereof, with a diluent, may be in forms suitable for oral and parenteral administration e.g. tablets, pills, dispersible powders, granules, capsules, solutions, emulsions, suspensions, syrups and elixirs.  Acid addition salts specified include hydrohalides, phosphates, nitrates, sulphates, maleates, fumarates, citrates, tartrates, methanesulphonates and ethanedisulphonates.  Quaternary ammonium salts include those with methyl or ethyl iodide, chloride or bromide or allyl or benzyl chloride or bromide or toluene-p-sulphonate.
Patent GB-283436-A (GB)
Title: Improvements in means for air-cooling the cylinders of internal combustion engines
IPC: F01P7/02
Filed: 1927-08-23
Abstract: 283,436. Bowen, J. Aug. 23, 1927. Drawings to Specification. Thermostats.-A Bourdon tube subject to temperature variations and employed to actuate a valve, contains methyl alcohol.
Patent GB-1125686-A (GB)
Title: Improvements relating to disengageable friction coupling for vehicles
IPC: F16D23/14
Filed: 1967-05-12
Abstract: 1,125,686. Controlling clutches. DAIMLER-BENZ A.G. 12 May, 1967 [14 May, 1966], No. 22197/67. Heading F2L. A motor-vehicle diaphragm spring clutch release ball-bearing 14 is carried by a non-rotary member 15 supported in a clutch housing 10 by tangentially arranged flexible straps 20 of rubber or, as shown, spring steel, the straps 20 being secured at their outer and inner ends respectively to the casing 10 and radial arms 18 of an intermediate ring 17 soldered on the member 15. The arms 18 are rounded off at their ends (Fig. 4, not shown) and similarly rounded edge washers 23 at the strap outer ends prevent indentation of the straps during service. The member 15 is axially stepped in diameter for engagement by the usual throw-out fork 16.
Patent GB-224641-A (GB)
Title: Improvements in or connected with two wheel trailers
IPC: B60P1/10
Filed: 1923-09-04
Abstract: 224,641. Eagle Engineering Co., Ltd., and Palmer, R. G. Sept. 4, 1923. Compound or articulated road vehicles; couplings for road vehicles.- The coupling or draw-bar 14 of a two-wheel trailer is connected by a ball- and-socket or other universal joint 16 to the tractor and is pivoted at 12 to the trailer frame 6, movement about the pivot being opposed by oppositely-acting springs 23, 24. The trailer has a tipping body and the tipping gear is utilized to assist in the coupling and uncoupling operations. When the trailer is to be uncoupled the body is tipped and supporting legs are lowered to the ground and secured. The ball joint 16 is then released by withdrawing a securing pin 18 and the trailer frame 6 is raised together with the draw-bar 14 by means of the tipping screw 30. The reverse procedure is followed in coupling the vehicles.
Patent GB-1017275-A (GB)
Title: New disazo pigments
Inventor: LENOIR MAURICE AUGUSTE JACQUES
IPC: C09B35/08
Filed: 1962-06-08
Abstract: The invention comprise disazo pigments of the formula <FORM:1017275/C4-C5/1> in which each X represents a hydrogen or chlorine atom or a methyl or methoxy group and may be the same or different and each Z represents a chlorine atom or methyl or methoxy group and may be the same or different.  The pigments are prepared by coupling an appropriate tetrazo compound with an appropriate acetoacetarylide.  Examples are furnished.ALSO:The N-acetylacetylated derivatives of 2-chloro-, 2-methyl and 2-methoxy-4-nitro-1-aminobenzenes are prepared by acetyl-acetylating the corresponding amines by means of an ester of acetylacetic acid or diketene preferably with the amine in solution in acetone and in the presence of pyridine.
Patent GB-984445-A (GB)
Title: A method of surface-treating galvanized iron sheets
IPC: C23C22/33
Filed: 1961-06-20
Abstract: Metallic products such as sheets of galvanized iron or aluminium-, nickel-, or tin-plated sheets are surface-treated by painting with an aqueous treating solution and drying to form an anticorrosive coating film, the solution containing a water-soluble partially hydrolysed polyvinyl acetate of hydrolysis degree 40-95% or its derivative, an orthophosphate ion, such as from H3PO4, (NH4)3PO4 or NaH2PO4, and a chromium compound which yields either hexavalent ions, such as in chromates, e.g. K2CrO4, or dichromates, e.g. ZnCr2O7, CaCr2O7, (NH4)2Cr2O7, or trivalent chromic ions, e.g. Cr2O3, Cr2(SO4)3 or Cr(NO3)3.  Preferably the polyvinyl acetate or derivative has a polymerization degree of 200-3000, and has a concentration of 1-40% by weight in the solution.  A nonionic surface active agent of the polyether type may be added to the solution.