baber/WOPTO huggingface dataset:
Patent FR-2348444-A1 (FR)
Title: Open fireplace for room heating - has combustion air drawn through heated passage at back of chimney and into room before reaching fire, to prevent, cold draughts
IPC: F24B1/188
Filed: 1976-04-15
Abstract: An open fireplace has a hood leading to a chimney. The back of the fireplace is of sheet steel and is clear of the wall of the room leaving a passage between them. This passage is open at the bottom to the atmosphere and has a discharge at the top round the sides of the hood into the room. The backplate of the fireplace has fins projecting into the passage to increase the heat transfer area. Natural convection draws outside air through the passage in which it is heated from the fire. The combustion air which the fire necessarily draws into he room is provided in this way and is preheated to increase efficiency and prevent cold draughts.
Patent FR-2308538-A1 (FR)
Title: Steering assembly for agricultural tracked vehicle and implement - has implement coupled to tractor frame by variable length rod and angle lever
IPC: B60D1/44
Filed: 1976-04-21
Abstract: The tractor vehicle with an endless track has a frame with a coupling system or a pull rod for a mounted implement. The coupling system is connected to the frame by at least two parts which engage at two different opposed horizontally displaced points whereby at least one of the parts has a construction which can be varied by operating a power system. The mounted apparatus is coupled to the tractor vehicle by a coupling rod (14) and an angle lever (16). If the tractor tends to deviate from its direction of travel a cylinder (20) connected to the angle lever is operated whereby its piston rod moves in or out and pivots the lever so that the actual point of attachment of the pull rod to the tractor is displaced.
Patent FR-2349534-A1 (FR)
Title: Lifting gear for tower crane - uses vehicle type differential to operate two cables on separately braked drums giving range of speeds
IPC: B66D1/26
Filed: 1976-04-28
Abstract: The lifting gear is used on a tower crane to give a choice of speeds. It has a vehicle type differential (6) mounted at the fixed end (1), of the boom (2, 3) driven by a motor (8, 9). A drum (11, 12) is fitted to each half shaft, each having a cable (16, 23). One Cable (16) passes over a pulley (17) on the carriage (4) around the lifting sheaves (18, 19) over a pulley (21) on the carriage opposite corner and is fixed (22) to the boom. The other cable (23) passes over the remaining carriage pulleys (24, 28), over a block (16, 25) between, and is similarly fixed (29). By selectively braking the drums, lifting and carriage speeds can be varied.
Patent FR-2349612-A1 (FR)
Title: Liq. hydroxy-telechelic aliphatic polycarbonate - used to make hydrolysis-resistant polyurethane
Inventor: SENET JEAN-PAUL
IPC: C08G64/30
Filed: 1976-04-29
Abstract: A liq. hydroxytelechelic (cyclo)aliphatic polycarbonate, contg. hydrophobic segments, of molar wt. =3,000 is obtd. by transesterification, with the aid of an alkyl or aryl carbonate, from a mixt. of two possibly alkyl substd. (cyclo)aliphatic diols A and B, each contg. a 4-6C chain or ring which carries the OH gps., and in A possibly also carries (thio)ether bridges. The molar ratio between A and B is such that the hydroxytelechelic polycarbonate obtd. is equivalent to a mixt. of a% and b% of polycarbonates derived respectively from A and B, where 30 =a =70, and a+b is 100. Hydrolysis-resistant poly(carbonates-urethanes), readily prepd. from the liq. hydroxytelechelic polycarbonates, are used in coatings, partic. for imitation leather and in composite materials.
Patent FR-2354119-A1 (FR)
Title: Exchangeable filter grids - resting under own weight in filter basin, are leakage-free substitutes for grids fixed by bolts
IPC: B01D35/28
Filed: 1976-06-08
Abstract: In a filter grid, a filter basis is provided as a one-piece polyester moulding, on whose sides the filter grids can rest under their own weight. The grids are pref. fitted with handles, to lift them in and out. Prior art fixed grids (using bolts) left gaps and had too large tolerances. These spoil filtering action. This is now avoided.
Patent FR-2356240-A1 (FR)
Title: Digital memory for video images - with transcoding circuit coupled between memory output and input
Inventor: LEVERD HENRI
IPC: G01S7/10
Filed: 1976-06-21
Abstract: The digital memory is used to store a video image, defined by a series of binary words, obtained from the video signal provided by a transmitter via a quantifying and coding circuit with a first time base. The stored video image can be reproduced on a display screen which is scanned according to a second time base. A transcoding circuit is coupled between the output and input of the digital memory, with a circuit for generating alternate write and read-out sequences in accordance with one time base. Each of the latter sequences includes a read-out and a write sub-sequence for re-entering a transcoded word at the same memory address from which it was read out.
Patent FR-2368050-A1 (FR)
Title: Optical fibre consisting of a solid core and liquid in a sheath - the liquid having lower refractive index than the core
IPC: G02B6/032
Filed: 1976-10-12
Abstract: Optical fibre is formed from a core surrounded by a sheath of lower refractive index, the sheath being sepd. from the core by a liquid of lower refractive index than the core. The core is pref. pure SiO2 and the liquid is a silicone. Several such cores may be contained in a common sheath filled with the liquid. There are no stresses set up between core and sheath to produce variations in the refractive index.
Patent FR-2372196-A1 (FR)
Title: Composition a mouler a base de polyolefine et de charge minerale, ayant une bonne resistance aux chocs
IPC: H01M50/14
Filed: 1976-11-29
Abstract: L'invention concerne les compositions thermoplastiques à mouler. Elle se rapporte à une composition thermoplastique à mouler destinée à la formation d'objets ayant une bonne stabilité thermique et une bonne résistance aux chocs à basse température, et elle contient essentiellement un mélange d'un polymère élastomère et d'une polyoléfine, contenant un aluminosilicate feldspathique anhydre finement divisé. Application à la formation d'objets ayant de bonnes propriétés de résistance à température élevée et une bonne résistance aux chocs à basse température.
Patent FR-2373732-A1 (FR)
Title: Mechanical seal for high speed pump shaft - has lubricated fixed and rotating sealing elements to improve extraction of heat
IPC: F16J15/34
Filed: 1976-12-07
Abstract: The mechanical seal is esp. for shaft in pumps or compressors which rotates at high speed and is subjected to high temp. and pressures. This draws off heat arising from the sliding action while simultaneously ensuring that the sealing surface is actively lubricated. The seal comprises a sealing element (4) made from a sintered hard alloy which rotates with the shaft (3) through a key coupling (5) and a stationary sealing element (7) which interact via sliding surfaces (8). Curved grooves (14) in at least one surface of the sealing elements produces a lubricating film. Several U-shaped grooves (16) in the other leading end (15) generates turbulence in the cooling medium and improves heat extraction efficiency.
Patent FR-2382682-A1 (FR)
Title: Mobile agricultural weighing machine - has wheeled frame with gantry including arm from which scales are suspended
IPC: G01G21/28
Filed: 1977-03-04
Abstract: The mobile scales for agricultural use comprise a trailer (6) on which a frame (4) is secured the frame is constructed from square box section struts which are removably fixed to the trailer. A three leg gantry is fitted to the frame (4). The gantry (1) includes a horizontal beam with a hook at its free end. The scales, of spring balance construction, are suspended from the hook with a large capacity hopper (3) suspended from the scales. A retractable leg (17) enables the scales to be used when the trailer is uncoupled from a towing vehicle.
Patent FR-2359657-A1 (FR)
Title: Assemblage d'un poincon et d'un injecteur
IPC: B21D28/34
Filed: 1977-03-23
Abstract: Assemblage d'un poinçon et d'un éjecteur pour presse de poinçonnage. Il comprend un poinçon 12 pouvant coulisser dans un manchon 31 d'éjection sous la commande du coulisseau d'une presse. Ce coulisseau porte sur une tête 19 vissée sur un tronçon extrême fileté 17 du poinçon, de manière à permettre le maintien à une valeur constante de la longueur utile de ce poinçon lorsque son extrémité 13 est affûtée par meulage. Domaine d'application : presses de poinçonnage.
Patent FR-2385251-A1 (FR)
Title: Magnetoelectric retarder for various vehicles - has squirrel cage machine connected to RC dipole
IPC: H02K49/02
Filed: 1977-03-25
Abstract: The asynchronous squirrel-cage type machine consists of a rotor (1) and rotor arm (2) which is fixed tot eh rotation of the vehicle wheels. There is a stator (3) consisting of two electromagnets, made of concentric steel plates with notches in which conductors make two distinct windings, each connected to a RC dipole. Each stator winding has an inductance (L1, L2). The capacitances (C1, C2) and resistances (R1, R2) may be varied simultaneously. When the stator windings are connected to teh Rc dipoles the machine is activated by auto-excitation, and functions in hyper synchronous generation. As long as the angular speed (W) of the rotor arm is greater than the pulse rate (Ws) due to the LC time constant, a braking couple is applied to the rotor arm, the power being dissipated through the resistors. The angular speed (W) is thus reduced to a predetermined value.
Patent FR-2358460-A1 (FR)
Title: Buche artificielle
IPC: C10L11/04
Filed: 1977-04-14
Abstract: a. Bûche artificielle pour cheminées. b. Bûche caractérisée en ce qu'elle comporte une gorge réalisée dans la surface de la bûche et ayant une partie supérieure et une partie inférieure, un emballage entourant la bûche, un matériau combustible étant appliqué sur le côté interne de l'emballage, en regard de la gorge, le volume défini par le matériau combustible et par la gorge formant un volume d'air, une patte faisant corps avec l'emballage, cette patte ayant une extrémité supérieure située au voisinage de la limite supérieure du matériau combustible ainsi qu'une extrémité inférieure.
Patent FR-2388093-A1 (FR)
Title: Hydraulically operated trench digging machine - has bucket chain or wheel excavator mounted on adjustable angle arm which is retracted onto chassis for transportation
IPC: E02F9/16
Filed: 1977-04-22
Abstract: The machine is used for digging trenches and comprises a tracked chassis (1, 3) carrying the power unit (2). This chassis can be hydraulically levelled and has a rear-mounted pivoting arm (8 ,10). The arm is adjustable for angle and height by means of an hydraulic ram (11). Its upper part carries the bucket chain (5, 6), a pivot (9) permitting its operating angle and depth to be adjusted using another hydraulic ram (14). The chain feed excavated soil onto a conveyor (16, 17) for removal. The bucket chain can be replaced by an outrigger arm and a bucket wheel. The chain frame or outrigger arm is retractable onto the chassis for transport.
Patent FR-2390712-A1 (FR)
Title: Automatic liq. mixt. dispenser - uses concentric pistons which deliver fixed and variable volume of respective liquids
IPC: B65B3/32
Filed: 1977-05-11
Abstract: The liquid dosing dispenser mixes two volumes of predetermined fluids the first of which is fixed and the second variable. The dispenser comprises a dosing chamber (1) in which a pair of concentric cylinders (2) and (3) reciprocate under independent control mechanisms. A cam (19) rotates around an axel (22) and drives a pair of cam followers (16) and (20). The two cam followers drive a system of beams (14) which carry platforms (12) and (26). The platforms are directly coupled to the piston rods (4) and (5). A quick pole (41) carries a pair of followers (42) which enable the platforms to move steadily.
Patent FR-2391087-A1 (FR)
Title: Ancillary tyre tread band mounting - comprising annular support which does not obscure hub access
IPC: B60C27/04
Filed: 1977-05-17
Abstract: Semi-rigid radial straps are secured to a vehicle wheet by a rigid annular or polygonal support which leaves clear access to the wheel hub. Pref. 5 clamps are secured at regular angular intervals by sliding clamps. pref. by use of an elastic spacer. Extra tyre traction is provided without need of access to the opposite face of the wheel and without inhibiting the removal or mounting of wheels fitted with straps. Radial compression of a strap in contact with the ground is automatically opposed >=2 other straps which are simultaneously below the level of the rolling axis.
Patent FR-2356296-A1 (FR)
Title: Laser with corrugated laser medium sheath - has corrugation depressions of specified geometric pattern to suppress total reflections
IPC: H01S3/20
Filed: 1977-06-21
Abstract: The laser may operate with a solid, liquid, or gaseous medium. At least a part of the surface envelope bounding the laser medium has large depressions with smooth surfaces, as compared with the wavelength of the laser radiation. The depressions are arranged in a defined geometric pattern, in order to prevent total reflections of the natural fluorescent radiation. If a solid laser medium is used the depressions (20) are provided on the laser rod (7) surface. In case of a liquid or gaseous laser the inner and outer side of the laser medium containing vessel are corrugated. The housing of the entire system is preferably light reflecting. It may be filled with a laser radiation absorbing fluid.
Patent FR-2356716-A1 (FR)
Title: Procede pour l'hydroconversion simultanee d'une huile hydrocarbonee lourde de charbon
IPC: C10G1/08
Filed: 1977-06-29
Abstract: L'invention concerne un procédé d'hydroconversion simultanée d'huile hydrocarbonée lourde et de charbon. Selon ce procédé, a) on forme un mélange d'huile hydrocarbonée lourde, de charbon et d'un composé métallique ajouté soluble dans l'huile, ledit métal étant choisi parmi les groupes VB, VIB, VIIB et VIII de la classification périodique des éléments et leurs mélanges; b) on convertit ledit composé métallique soluble dans l'huile en un catalyseur au sein du mélange en présence d'un gaz contenant de l'hydrogène par chauffage dudit mélange à température élevée ; c) on fait réagir le mélange résultant contenant ledit catalyseur avec de l'hydrogène dans des conditions d'hydroconversion de l'huile et du charbon, et; d) on récupère un produit hydrocarboné hydroconverti, normalement liquide Hydroconversion du charbon.
Patent FR-2356496-A1 (FR)
Title: Procede de fabrication de feuilles thermoplastiques a surface uniformement mate
IPC: B29C33/00
Filed: 1977-07-04
Abstract: Procédé de fabrication de feuilles thermoplastiques uniformément mates. On calandre en feuille une masse thermoplastique, en faisant tourner le dernier cylindre de la calandre sensiblement plus vite ou plus lentement que les autres cylindres (rapport 1,3 à 20, ou 1/1,3 à 1/20). On retire une feuille uniformément dépolie qui se prête à l'écriture, à la décoration, etc.
Patent FR-2357594-A1 (FR)
Title: Polymerisation a l'etat fondu de l'epsilon-caprolactame
Inventor: SMITH HARRY ANDREW
IPC: C08G69/16
Filed: 1977-07-05
Abstract: Polymérisation à l'état fondu de l' epsilon -caprolactame en présence d'eau et d'une amine. Le procédé selon l'invention consiste à faire une polymérisation à l'état fondu de l' epsilon -caprolactame en présence d'eau et d'une amine bouillant à une température d'au moins 245 degrés C à une pression supérieure à la pression atmosphérique jusqu'à ce qu'une proportion majeure de la polymérisation se soit produite, après quoi le système est détendu et la polymérisation est poursuivie jusqu'à ce que la teneur en matières extractibles au méthanol soit réduite à moins de 5 % en poids. Le produit résultant a une stabilité à la chaleur améliorée et il est facilement utilisé pour fabriquer des fibres et des films.
Patent FR-2357444-A1 (FR)
Title: Dispositif d'entrainement par chaine
IPC: F16H19/00
Filed: 1977-07-05
Abstract: Dispositif d'entraînement par chaîne Il comprend un tronçon de chaîne 11 à joints articulés auquel est associée une unité d'entraînement 14, le tronçon étant supporté par ses articulations dans un guidage, notamment un rail creux 14 fendu longitudinalement. Ce dispositif peut être utilisé par exemple comme élévateur ou convoyeur.
Patent FR-2397881-A1 (FR)
Title: Creation of micro-bubbles from the flotation sepn. of a suspension - with gas saturation chamber, cavitation zone and flotation chamber in which supersaturation occurs
Inventor: LECOFFRE YVES
IPC: B03D1/24
Filed: 1977-07-20
Abstract: Particles or droplets of an immiscible fluid suspended in a liq. are removed by a flotation process in which microbubbles formed in the liq. adhere to the suspended particles and float them to the surface of a flotation chamber. The micro-bubbles are created by saturating the suspension with a gas and then passing it through a channel contg. a flap valve leading to the flotation chambers. The flap valve is periodically and suddenly closed and opened causing low pressure waves to be created and consequent cavitation in the flowing fluid. The micro-bubbles are formed when the cavities implode further down the channel. The flow is so arranged, that the micro-bubbles are formed in a zone in which the fluid is super-saturated with gas so that, as the bubbles collect particles, they also grow.
Patent FR-2362816-A1 (FR)
Title: Derives du (phenoxy-4 phenoxy)-2 pentane, leur preparation et leur application comme herbicides.
IPC: A01N39/00
Filed: 1977-08-25
Abstract: Dérivés du (phénoxy-4 phénoxy)-2 pentane, leur préparation et leur application comme herbicides. Les composés répondent à la formule générale : (R1 )n :
Patent FR-2402317-A1 (FR)
Title: Electrical plug and socket connector - has spring loaded disc cover for socket which does not uncover live contacts until plug is pushed fully home
IPC: H01R13/627
Filed: 1977-08-30
Abstract: The socket part of the connector has a cover (12) which is pushed down into the socket when the plug (6) part of the connector is pushed home. The plug (6) has three electrical contact rings (8, 9, 10) one of which (10) is set in the lower part of its circumferential surface. The other two contact rings (8, 9) are on the circumferential surface of the plug. The connector cover (12) is in the form of a disc and has on its lower surface conductor terminals (16). These terminals (16) mate with pairs of conductor terminals (17, 18), fixed in the base of the socket, when the plug is inserted. On the lateral wall of the socket are spring loaded ballbearing contacts (21, 25, 27) which connect with the contact rings on the plug.
Patent FR-2395291-A1 (FR)
Title: Melange de polyolefines utile comme adhesifs
IPC: C08L101/00
Filed: 1977-09-22
Abstract: L'invention concerne des compositions de matière ayant entre autres caractéristiques avantageuses des propriétés de forte adhérence à divers supports. Ces compositions comprennent des mélanges d'un copolymère greffé d'un polyéthylène haute densité et d'au moins un anhydride d'acide carboxylique non saturé à noyaux condensés mélangé avec une résine polyéthylène choisie parmi les homopolymères d'éthylène, les copolymères d'éthylène et d'une alpha -oléfine et leurs mélanges. Ces composites sont utiles pour la réalisation de structures composites.
Patent FR-2422140-A1 (FR)
Title: Visual indicator for rock movement in mines - uses balls retained by blades and falling in vertical elements to define expansion
IPC: E21F17/18
Filed: 1977-09-22
Abstract: Rapid visual check on expansion of ground in mines is performed by balls falling in vertical elements to define particular expansion. A bolt (1) has non threaded upper part (1A) which in introduced and anchored into a hole (2) in the gallery roof (4). A conical nut (5) is screwed onto threaded part (1B) of the bolt shaft (1). A sleeve (6) and plate (7) provide base for a helical spring (8) around the shaft. A number of metallic blades (9) with upper ends welded to lower part of sleeve form the skirt. Blades retain the balls (11) against the conical nut with variable tension depending on the nut diameter. These are displaced when the ground expands.
Patent FR-2369703-A1 (FR)
Title: Station de connexion de cables
IPC: H01R43/01
Filed: 1977-10-25
Abstract: L'invention concerne un appareil de connexion pour câble. Il comprend des éléments destinés à retenir temporairement des paires distinctes d'un câble à paires multiples en association de connexion avec un seul corps de connecteur et tout en repoussant pratiquement simultanément le couvercle de ce connecteur d'interverrouillage avec celui-ci, ainsi que des organes permettant éventuellement, lorsque c'est nécessaire, de découper les bouts de fil sur le bord du connecteur. Utilisation dans le domaine des connecteurs pour câbles à conducteurs multiples.
Patent FR-2409394-A1 (FR)
Title: Electric generator powered by sea waves - has float guided vertically to drive racks each engaging gear on generator shaft
IPC: F03B13/18
Filed: 1977-11-17
Abstract: A platform fixed to the seabed by legs supports two vertical guides (14). A float between the guides has projecting pins which slide in the slots in the guides. The float is thus restricted to pure vertical movement which is imparted to it by the waves. Ropes (23, 23a) from the float run over pulleys (13, 13a) to toothed racks (10, 10a). These are guided in vertical slides (8, 8a) attached to the platform. An electrical generator (4) on the platform has a shaft (5) projecting at each end. Each shaft carries a ratchet wheel (6, 6a) which is rotated in one direction only by the reciprocation of the toothed racks.
Patent FR-2371983-A1 (FR)
Title: Sand core fettling process - with fettling tools on milling machine and coordinate table for core containers controlled by electronic eye
IPC: B22C9/18
Filed: 1977-11-21
Abstract: Flash on sand cores in foundries, e.g. on Croning cores, is removed by a fettling tool. Each sand core is deposited in a container. The fettling tool is applied to it under the automatic control of its path to remove the flash produced by the sand injection. This obviates manual flash removal which is necessary for precision castings where rotary brushes are too rough. The operation is exact and reproducible and allows several cores to be treated simultaneously. It can be matched ideally with the sand injection machine cycles.
Patent FR-2409920-A1 (FR)
Title: Return postage envelope construction - is made of several folded sections for both outward and return posting
IPC: B65D27/06
Filed: 1977-11-25
Abstract: The envelope is divided into three sections folded along the perforated lines. The envelope is able to contain loose documents on the outward despatch. One end of the envelope may be used for the return postage. This portion is divided into three sections (D, E, F) for folding. The envelope is supplied in the appropriate places with pre-gummed surfaces and perforations to allow the dividing of the envelope.
Patent FR-2415158-A1 (FR)
Title: Knitted tights made on machine with oscillated cylinder - using auxiliary jacks moved by switchable cams into idling track
IPC: D04B9/46
Filed: 1978-01-24
Abstract: During predetermined working phases in the operation of a circular knitting machine, the end needles of an arc of needles, are put separately and consecutively out of action and/or are again brought back into action. The needles put out of action being brought into a lowered position of rest. Whilst the needles are being put out of action and/or are being brought back into action, they are at least once, brought into an intermediate leve. In this position the stitches formed previously are still in the proximity of the needle opening, and they have not yet slipped over the latch on to the shaft. The end needles are consequently able to take the thread from the guide in the zone into which they are pushed, without the previous old stitches being drawn down. The needles to be put out of action are raised to the intermediate level mentioned, twice, before being lowered to their position of rest. The quality of the goods is improved and productivity is increased.