baber/WOPTO huggingface dataset:
Patent FR-3137987-A1 (FR)
Title: Système de reconnaissance d'expressions mathématiques dirigé par la syntaxe.
Inventor: ZHUANG JIANMING
IPC: G06F18/20
Filed: 2023-07-12
Abstract: AUn système de reconnaissance d'expressions mathématiques dirigé par la syntaxe combine des expressions mathématiques manuscrites en-ligne, des expressions mathématiques manuscrites et imprimées hors ligne et des expressions mathématiques structurées pour générer une grande quantité d'expressions mathématiques utilisables pour l'entraînement des réseaux neuronaux. Une méthode d'apprentissage de bout en bout est utilisée pour former le réseau neuronal afin d'augmenter l'effet d'apprentissage et la capacité de reconnaissance. Le problème du sur-entraînement dans les réseaux neuronaux multicouches est réduit de manière efficace afin d'augmenter la précision de l'ensemble des tests. Le mode de réseau neuronal est utilisable pour l'expression mathématique manuscrite en-ligne, l'expression mathématique manuscrite hors ligne et l'expression mathématique imprimée. Par conséquent, un seul système de reconnaissance est utilisé, aucun autre système n'est nécessaire.   Figure à publier avec l’abrégé : Fig. 1
Patent FR-2004888-A1 (FR)
Title: Grafted copolymers of caprolactam with ethylene and
IPC: C08L77/00
Filed: 1969-02-26
Abstract: The graft polymer comprises 0.1-1.0 wt.% of a copolymer of mol. wt. 1,000-5,000 which consists predominantly of recurring -CH2CH2- units, the other polymer having repeating units where R is H or Me, both of which are linked to a basic polyamide chain of formula:- (NH(CH2)5CO)NH(CH2)5COOH where x is a whole no. The -CH2ch2- units form part of the main polymer chain while the CO group forms side chains. The polymer does not yellow on heating, has a good surface polish and low frictional resistance to extrusion.
Patent FR-2087972-A1 (FR)
Title: Melt powder and fluid adding device
IPC: C21C7/00
Filed: 1970-05-04
Abstract: Installation for the introduction of powder or liquid additions into metal melts consists of a melt holding chamber into which the melt is poured. This is fitted with a slag separator and a vortex discharge pipe into a ladle. The discharge pipe comprises a vertical channel which is fitted with three symmetrically disposed openings pointing downwards at an angle alpha and branching into the main channel, which widens at the junctions permitting a radial branching in of the openings. A casting ladle is placed below the pipe to receive the melt with the mixed-in additions. The above plant ensures a greatly improved mixing-in action for the additions which are being made.
Patent FR-2043694-A1 (FR)
IPC: F16H48/06
Filed: 1970-05-26
Abstract: 1,239,728. Differential gearing; toothed gearing; securing pinions on shafts. CLARK EQUIPMENT CO. 27 April, 1970 [27 May, 1969], No. 20055/70. Headings F2D, F2Q and F2U. To facilitate assembly and removal of an electric motor 12 from a differential assembly 10 without disturbing the mesh of the driving pinion 32 with the differential ring gear 24, the pinion 32 is carried in bearings 32, 34 of a support member 30 bolted at 52 to the differential housing 14, a shim 54 being interposed between the support 30 and housing lugs 48 to ensure correct gear mesh, the pinion 32 being internally splined at 40 for ready engagement with the correspondingly splined end 62 of the electric motor shaft 58 which may be axially inserted therein when the electric motor 12 is spigoted at 64 in an opening 16 of the differential housing 14.
Patent FR-2126107-A1 (FR)
Title: Moulding steel work pieces - using thermosetting resin coated sand shrink head
IPC: B22C9/08
Filed: 1971-02-25
Abstract: Shrink head for moulding steel workpieces in stored or green sand comprises a thin e.g. 5-7 mm walled hollow body (I) with an open base (II) which is rested on a chosen area of the model. (I) is completely buried in the moulding sand during coating of the model (III) and during removal of (III), (II) is disengaged from (III). (I) is esp. sand agglomerated with a thermosetting resin, is cylindrical or tronconic with a vertical axis of revolution topped by a hemispheric cap whose internal wall forms n internal projection similar to a known atmospheric pencil.
Patent FR-2171864-A1 (FR)
Title: Developer compsn - contg sulphones
IPC: G03C5/305
Filed: 1972-02-11
Abstract: The half tone dot quality of photographic products for lithographic processes is improved by incorporating a sulphone into the developer. The sulphone is pref. trimethylene trisulphone or 2,5-dihydrothiophene 1,1,-dioxide. The developer is p-dihydroxquinone.
Patent FR-2140215-A1 (FR)
Title: Non alcoholic drinks - as emulsions stabilised by skimmed milk
IPC: A23L35/00
Filed: 1972-06-02
Abstract: Turbid drinks in the form of a very stable aqueous emulsion are stabilised with condensed or powdered skimmed milk. Emulsion may be of an essential oil, and/or a natural of reconstituted triglyceride oil, flavourings, thickeners, preservatives, polyhydroylated cpds. and fruit juice may be added.
Patent FR-2191849-A1 (FR)
Title: Continuous prepn of frozen food prods - in individual portions
IPC: A23P20/15
Filed: 1972-07-10
Abstract: Frozen foodstuffs are obtd. using a conveyor belt made from links of stainless steel. The small slabs of the foodstuff are placed on the belt opposite corridors delimited by guide bars. The slabs pass under a rotating brush with a peripheral speed greater than that of the belt to accelerate the slabs and forms them into continuous strips. The strips pass under a roller and are brought under a feed hopper for application of a sauce. The sauce-covered strips are carried by the belt into a cooling tunnel in which air approx. -30 degrees C is circulated through the belt; the sauce is frozen in about 15 mins. Three rollers break the frozen layer of sauce and return the strips to slabs with the original dimensions. These portions are taken by another conveyor to the packing station. Suitable for fish fillets, game, poultry, fruit and vegetable materials. The taste and aroma of the fresh foodstuff is preserved.
Patent FR-2146314-A1 (FR)
Title: Pile fabrics - mfrg by pulling fibre producing melt from permeable supports with air blast assistance
IPC: D04H11/08
Filed: 1972-07-17
Abstract: Pile fabrics are produced by passing a jute fabric and a polypropylene granulate through a pair of rollers both of which are heated to melt the granulate on the jute support as the support is in contact with the rollers, the fibres being formed at the separation pt. of the jute with one of the rollers at which pt. there is provided an air blast nozzle directing a jet of air in the direction of fibre formation.
Patent FR-2211443-A1 (FR)
Title: Dimerisation of acrylic acid derivs - using palladium (II) complexes and quinones as catalyst
IPC: C07C69/593
Filed: 1972-12-21
Abstract: Linear derivs. of mono unsatd. dicarboxylic acids of formula: ROC-CH2-CH2-CH=CH-COR (where R is lower alkoxy, aryloxy, acyloxy or aminated opt. substd. gp) and corresp. DELTA3 deriv. are prepd. by dimerisation of unsatd. carboxylic and derivs. of formula CH2=CH-COr using sol. Pd (II) complex catalyst and a quinone CO-catalyst, the reaction being effected at 0 degrees C to b.pt. f the reaction medium and under normal pressure catalyst system has high activity and selectivity and gives high yield.
Patent FR-2215350-A1 (FR)
Title: Cooling empty marine tanker liquefied gas storage tanks - by vaporising reserve liquefied gas
IPC: B63J2/14
Filed: 1973-01-26
Abstract: Maintenance of the cooling of the tanks in a marine tanker for the transport of gas liquefied at low temp. e.g. natural gas, for at least a part of the return voyage with empty tanks is by the known technique of vaporising in each tank liquefied gas held back as a residual fraction of the cargo after unloading at the destination, by retaining on the vessel for such vaporising at least a central reserve of liquefied gas independent of and outside the transport tanks and ships holds, from which the refrigerant liquefied gas to be vaporised is distributed to and introduced into at least certain of the tanks. Each reserve of liquefied gas is stored under pressure which serves for displacing it to the tanks to be cooled.
Patent FR-2229131-A1 (FR)
Title: High-voltage circuit breaker - with integral autopneumatic arc extinction
IPC: H01H33/12
Filed: 1973-05-11
Abstract: When a circuit-breaker has the arc extinguishing system built into the mobile contacts, such as a piston operating inside a cylinder, it can be an important factor in the inertia of the mobile contact and lead to the reducing of the efficiency of the control. This circuit-breaker, whose insulating parts would be designed to properly isolate the high-voltage units, has a rotary contact arm. This pivots between two fixed contact arrangements. At one end is a moving system for the rotary arm, mounted between insulating walls. Suitably pivoted in that arrangement is the auto-pneumatic arc extinguishing bellows system. The movement of the mobile contact when interrupting a circuit initiates the air blast.
Patent FR-2237905-A1 (FR)
Title: Lacto serum conversion to galactose - using a prototrophic microorganism contg beta-galactosidase
IPC: C12N1/20
Filed: 1973-07-20
Abstract: A soln. contg. galactose for drinks is prepd. by fermenting a soln. contg. lactose (lactoserum by-prod. of cheese prodn. with a mutant non-pathogenic, prototrophic microorganism (I) contg. beta-galactosidase and having gal - character, followed by sepn. of the microorganisms. (I) is a mutant haploid (diploidised) derived from a culture of Kluyveromyces fragilis or Escherichia coli, or Enterobacteriaceae lactobacteriaceae. This provides a commercial use for lactoserum which can pollute streams and gives dietetic milk wholly assimilable by the elderly.
Patent FR-2252048-A1 (FR)
Title: Tuber and root-crop lifter - includes supporting beam with detachably fixed to-and-from moving arm with digger on end
IPC: A01D25/04
Filed: 1973-11-22
Abstract: The lifter has a frame with cross-bars between which the diggers are positioned. the digger may consist of a pair of shares or discs, or one share and one disc. The tubers lifted by the diggers are pulled up by an elevator wheel. Each share or disc is fixed to a support-ar, which in turn is fixed to a supporting-beam. The front end of the supporting beam is hinged to a pivot lever which has an eye pivot-mounted on an eccentric sleeve which in turn is mounted on a drive shaft positioned crosswise to the digger's direction of travel. The pivot lever can be moved axially on the eccentric sleeve. The drive shaft is driven by means of sprocket wheels, and a drive rod from the power take-off. The supporting beam has two slanting bars between which the support arm holding the digger is fixed.
Patent FR-2259489-A1 (FR)
Title: A.C. relay circuit closed at low voltage - has switch independent of control circuit when voltage exceeds set value
IPC: H03K17/13
Filed: 1974-01-28
Abstract: The relay circuit includes a rectifier bridge network (22) having input terminals (28, 30) and positive and negative output terminals (10, 12). A circuit is designed to apply a controlled alternating voltage to the input terminals of the rectifier bridge network (22) and a control switch (14) is connected to the output terminals of the rectifier bridge. A first control circuit reacts to the control signal whilst closing the control switch (14) and a second control circuit makes the control switch (14) independent of the first control circuit when the amplitude of the alternating controlled voltage exceeds a predetermined value.
Patent FR-2264682-A1 (FR)
Title: Flexible and retractable railway wagon roof - has free edge fixed to tube on pivotal arms attached to chain drive
IPC: B60J7/08
Filed: 1974-03-19
Abstract: There is a wagon chassis and wheels supporting a hopper for loose material. There are vertical hopper end walls. The top of the hopper is rounded and has a rectangular opening with transverse side edges formed by the tops of the vertical end walls. The movable roof is made of a light, flexible covering, generally rectangular, slightly larger than the opening. One long edge is fixed on one long side of the opening and the other side is fixed to a rigid tube whose ends are supported on arms turning on a shaft turned by a chain transmission and a hand wheel with a lock.
Patent FR-2270901-A1 (FR)
Title: Automatic safety belt rewinder restrictor - has stop lug on pinion for coupling to rewinding pinion
IPC: B60R22/44
Filed: 1974-05-17
Abstract: The restrictor incorporates a mechanism for engagement with a pinion (100) coupled to the belt winding and unwinding device. This mechanism has a lug (105) bearing in the rest position against a fixed stop (106). When the mechanism is engaged with the pinion and the belt is unwound, the lug lifts clear of the stop, and on rewinding it comes up against the stop again when the length wound in is equal to theat unwound in the first place. The mechanism can comprise a pinion (101) mounted on a support plate movable by remote control, the pinion carrying the lug. Thus the user can set the belt to fit against his body, while avoiding the constant pressure which would otherwise be exerted on him by the rewinding spring.
Patent FR-2271917-A1 (FR)
Title: Extrusion die adaptor for admitting a hot fluid lubricant - to reduce haul off stresses or increase extrusion rates
IPC: B29C48/94
Filed: 1974-05-24
Abstract: An extrusion die head fitting, esp. for filament and tape mfr., allows a jet of fluid to be introduced between the surface of an extrudate and the die land faces which define the shape and dimensions of the extruded profile. The fitting can accept a preheated fluid and can be adjusted during extrusion to vary the amount of fluid introduced alongside the extrudate entering the die. Higher melt surface temp. reduces the melt drag and hence the tension necessary to draw the melt through the die. The velocity of the air jet can be throttled so that it does not sever the melt as the latter is heated.
Patent FR-2232685-A1 (FR)
Title: Fluid drive system for rockets - with pre-combustion chamber to raise oxydator-rich gas mixture, and based on main drive electrical system
IPC: F02C1/04
Filed: 1974-06-05
Abstract: Two separate fuel transport systems are used for main drive rockets and auxiliary (steering) rockets superfluous resulting in considerable weight-advantage. Turbo-pump combination can supply both main drive and auxiliary-drive with fuel and oxidiser. Pre-combustion chamber of main drive is also gas generator of the auxiliary. If auxiliary is used, the fuel and oxidiser are evaporated in heat exchanger with gas from a gas generator which was supplied by same turbo-pump combination. Heat-exchanger is not in use when main drive is on full power.
Patent FR-2239742-A1 (FR)
Title: Optical fibre cable with high strength wire sheath - is used as aerial link and high tension cable
IPC: G02B6/44
Filed: 1974-06-13
Abstract: Aerial cable has a channel for conduction of data enclosed in th interior of a sheath and the mechanical load bearing wires of the cable surround the sheath. Data is transmitted optically and the conductor arrangement is made from at least one optical fibre (1) which is surrounded on the outside by the spiral wound wires which bear the mechanical load. The optical conductors are embedded in the sheath which is made of an opaque synthetic material sheath (2). The outer armouring support (3) may be used as a high voltage cable. Data transmission through the cabel is completely unaffected by parasitic magnetic fields.
Patent FR-2275985-A1 (FR)
Title: Bean harvester with curved picking plate - has transverse rotatable drum with inclined picking fingers
IPC: A01D45/22
Filed: 1974-06-25
Abstract: The rotating drum is supported in a drum frame which includes a pair of side plates (6) and a rear beam (7). This drum frame (6, 7) is tiltable as a whole around the horizontal axis (8) in the machine frames (9, 10). The tilting or pivoting axis (8) may be constituted by pins and suitable bearings. The front vertical posts (10) of the machine frame are provided at the lower ends with wheels (11), which are vertically adjustable. In front of each wheel (11) a curved cover (12) is affixed to the vertical post (10). The rear and horizontal beam (7) of the drum frame (6, 7) supports a swiveling axis (13), which in turn supports a short axle (14) which is provided at its ends with rear wheels (15). Also the rear wheels (15) are vertically adjustable; when adjusting the height the drum with the drum frame will pivot about the pivoting axis (8) with respect to the machine frame.
Patent FR-2276589-A1 (FR)
Title: Apparatus for analysis of gases - uses continuous process operating in real time involving introduction of tracer into gas
Inventor: LOPEZ MARIE-CLAUDE
IPC: G01N30/02
Filed: 1974-06-26
Abstract: The continuous process for analysing a gas containing a tracer involves successively introducing a number of calibrated samples of gas with a different number of chromatographic columns and the temporal separation between the introduction of any two samples is made equal to or greater than the temporal width of a chromatographic peak for the tracer. The tracer may consist of sulphur hexafluoride, and its concentration may be measured by an electon-capture detector. When the last chromatographic column of the series is reached, the series of introductions of gas samples is repeated, starting with the first of the columns, so that continuous monitoring is achieved. There may be several "waves" of the tracer going up each column.
Patent FR-2287190-A1 (FR)
Title: Sliding slat door for furniture - is longer than closure opening so as to extend partly at furniture sides when closed
IPC: E06B9/11
Filed: 1974-10-08
Abstract: Each slat is moulded from plastic and comprises a body with, at one end, a circular bearing surface parallel to the body and attached to it. This bearing engages a similar recess in the end of the body of the adjoining slat to form a pivoting joint. Each slat is supported top and bottom on runners and has a side support for guidance. The number of slats necessary to close the door opening is assembled with extra slats added (L) to give stability to the end of the door when subjected to a pull not in alignment with its axis.
Patent FR-2288427-A1 (FR)
Title: Underwater communication system - uses ultrasonic pulses with signal delays as required
IPC: H04B11/00
Filed: 1974-10-16
Abstract: An ultrasonic transmission reception unit is enclosed in a sealed box (B) and comprises a receiver (R) and transmitter (5) circuits manufactured from integrated circuit components and coupled by a timing circuit (T). These circuits are powered from a rechargeable battery (A) and employ pulse techniques. Ultrasonic transducers (TR, TS) are used for reception and transmission of the ultrasonic waves and are connected through the receiver or transmitter circuit to a loudspeaker (L) or microphone (M), to permit voice communication. An external signal programmer (P) may be connected through decoding (D) and encoding (E) circuits.
Patent FR-2251618-A1 (FR)
Title: Insulating oils based on hydrofined lubricating oil - contg alkylated naphthalenes
IPC: H01B3/22
Filed: 1974-11-15
Abstract: Insulating oils comprise a mixt. of (A) a mineral oil obtd. by hydrofining a petroleum lubricating oil fraction and (b) an (R)n-substd. naphthalene (where R is 1-4C alkyl; n=1-4; the total no. of C atoms in the alkyl gps. is >=3; and R can be the same or different when n >=2). The oils have good oxidn. resistance and excellent gas absorption properties (i.e. they absorb H2 in an electric field). The mixt. pref. contains 5-45 vol.% alkylnaphthalene, opt. in the form of an isomer mixt. or a mixt. of different alkylnaphthalenes. The prefd. alkylnaphthalenes are those with 1-4 propyl gps.
Patent FR-2296601-A1 (FR)
Title: Fibre reinforced fire-resistant building board - contg. organic fibres and free of asbestos
Inventor: BARRABLE VICTOR ERNEST
IPC: C04B20/00
Filed: 1975-01-06
Abstract: Compsn. for making shaped prods. comprises (1) an inorganic hydraulic binder comprising >=1 of calcium silicate, Portland cement, aluminous cement and blast furnace cement, and (ii) a fibrous reinforcement free of asbestos and contg. organic fibres which do not melt below 140 degrees C Used esp. for fire resistant construction plates, the term being used in its widest sense, including those for ship-building.
Patent FR-2308906-A1 (FR)
Title: Hollow explosive charge fuse - has air chamber between priming charge and apex of hollow charge sheathing
Inventor: MARTINON HENRI
IPC: F42B1/024
Filed: 1975-04-23
Abstract: The hollow explosive charge fuse has, between the priming explosive charge (6) and the sheathing (2) of the hollow charge (1) a chamber (9) filled with air or any suitable gas. This chamber extends to both sides of the sheathing, to slow down propagation of the axial priming wave. Thus the priming waves act simultaneously all along the sheathing. The chamber can be formed in the priming charge or the main one, and the priming block (7) can be shaped to fit round it, being annular, conical, or flat in shape. The surface of the main charge can be tangential to the apex of the sheathing.
Patent FR-2279741-A1 (FR)
Title: Propylene oxide prepn. from propylene - by direct oxidn. in soln. with oxygen diluted with inert gas
IPC: C07D301/06
Filed: 1975-07-18
Abstract: Propylene oxide, (I), prepn. by spontaneous direct oxidn. of propylene with O2 in a solvent takes place by diluting the O2 with subordinate quantities of a gas which neither takes part in reaction nor reacts with reaction prods. (I) is an inter. for prepn of polols, glycols, auxiliaries for plastics and textiles, vehicle propellants, etc. Selectivity to (I) and yields are improved, e.g. from 40- to 45 mol% w.r.t. propylene converted. Oxidn., e.g. in benzene, takes place at 150-200 degrees C under 50-60 bar. O2 dilution may be such that its vol. concn. is 50-90%.
Patent FR-2279830-A1 (FR)
Title: Adhesive mixture for wall papers - contg conventional water soluble or dispersable wallpaper adhesive, and waxy hydrophilic material
IPC: C09J193/00
Filed: 1975-07-23
Abstract: Powdered or granular adhesive mixt., esp. for wallpapers, contains a conventional, water soluble or dispersible, wallpaper adhesive (I), and a waxing hydrophilic material (II). II interrupts the homogeneity of the adhesive film formed by I on drying. This enables the paper to be m ore easily stripped from the wall in large pieces, even when dry. I is prep. methyl-, carboxymethyl-, hydroxyethyl-, or hydroxypropyl-cellulose, starch, a starch ether, dextrin, PVA, and/or PVAc. II is pref. a polyethylene glycol, polypropylene glycol or polybutylene glycol.
Patent FR-2332410-A1 (FR)
Title: Automatic locking device for rolling blinds - has twin sprung lugs locating blind handle when in down position preventing movement from exterior
IPC: E06B9/80
Filed: 1975-11-20
Abstract: The automatic locking system is for rolling shutters which pull down in front of house windows. The lock operates from the inside when the shutter is in its down position and obviates the need to lock the blind by opening the window. It comprises a rectangular shaped steel handle manufactured from rod which is attached to the base of the shutter. The blind is pulled down and the handle clipped into a receiver attached to the wall. The receiver has two spring lugs which clip over the handle preventing its movement from the outside. The lugs are released when the blind is to be rolled.