baber/WOPTO huggingface dataset:
Patent FR-2556837-A1 (FR)
Title: Method and device for analysing elements emerging from the surface of a product and applications
Inventor: DURAND BERNARD GUSTAVE
IPC: G02B27/42
Filed: 1983-12-19
Abstract: The method involves placing the product 5 in a light beam 2 from a laser source 1. In the focal plane 7 of a lens 6 placed behind the product 5, the focused light 9 is separated from the unfocused light 10 which corresponds to that part of the beam diffracted by the elements 5' emerging from the surface of the product 5. The spatial distribution and intensity of the unfocused light 10, which are representative only of the elements 5' emerging from the surface of the product, are analysed. With advantage, the image of the emergent elements 5' only is reconstructed from the diffracted light, and the analysis is carried out in the corresponding image plane 12. Application particularly in the textile industry, especially in analysing the hairiness of threads.
Patent FR-2540257-A1 (FR)
Title: Produit d'enregistrement photothermographique aux halogenures d'argent
Inventor: REEVES JOHN WATSON
IPC: G03C1/005
Filed: 1984-01-31
Abstract: L'invention concerne un produit d'enregistrement photothermographique aux halogénures d'argent à gains tabulaires minces. Le produit comprend, en association permettant une réaction, des grains d'halogénure d'argent photosensible et un agent de traitement de l'halgénure d'argent. Au moins 50 % de l'aire projetée des grains d'halogénure d'argent est fournie par des grains tabulaires minces ayant une épaisseur moyenne inférieure à 0,3 micromètre. Application à l'obtention de produits photothermographiques de sensibilisation spectrale et de tonalité d'image améliorées.
Patent FR-2562870-A1 (FR)
Title: Moisture-resistant packaging which is capable of being closed off in a sealed manner by a plastic film
Inventor: DROPSY PHILIPPE
IPC: B65D5/56
Filed: 1984-04-13
Abstract: The invention relates to a moisture-resistant packaging. According to the invention, this packaging comprises a part 1 made of cardboard, preferably of the corrugated type, in the shape of a tray, comprising a bottom on which are hinged, by means of folding lines, lateral walls which are substantially contiguous edge to edge, but without overlapping, and two shells 2, 3 of a similar shape made of thermoplastic, between which the said cardboard part 1 is inserted, the said shells being assembled together by heat sealing from the upper edge of the said lateral walls, so as to form a rim 4 which projects laterally with respect to the upper edge of the said tray, over the whole periphery of the latter, parallel to the plane of the bottom.
Patent FR-2563730-A1 (FR)
Title: Device avoiding the discomfort caused to bedridden patients by bedding
IPC: A61G7/05
Filed: 1984-05-03
Abstract: The invention relates to a device whose aim is to reduce the discomfort caused to bedridden patients by bedding while only producing a minimum of discomfort itself. Its distinctive feature is that it is supported by the bedstead and not by the mattress, which allows it to have a stable base which does not cause discomfort, and a single vertical face. It may consist of a single steel rod which is bent according to the drawing below. The device according to the invention is intended above all for people with foot injuries.
Patent FR-2548341-A1 (FR)
Title: Refrigerateur cryogenique
Inventor: SARCIA DOMENICO S
IPC: F25B9/14
Filed: 1984-06-13
Abstract: A.REFRIGERATEUR CRYOGENIQUE. B.REFRIGERATEUR CARACTERISE PAR UNE PREMIERE ET UNE SECONDE CHAMBRE 20, 22 AINSI QU'UNE TROISIEME CHAMBRE 62, UN MOYEN DE DEPLACEMENT 18 ET UN ORGANE COULISSANT 48, CES DEUX DERNIERS FAISANT UN ELEMENT SOLIDAIRE DONT LE MOUVEMENT DE VA-ET-VIENT EST COMMANDE PAR UN MOTEUR32. C.L'INVENTION CONCERNE LES CIRCUITS DE FROID.
Patent FR-2567700-A1 (FR)
Title: Combiner for diversity reception
Inventor: LELANDAIS GUY
IPC: H04B7/08
Filed: 1984-07-10
Abstract: The invention relates to combiners used to mix the signals from two diversity receivers 101, 102. It consists in using means of standardising video signals 107, 108 and AGC signals 111-114, a digitally controlled potentiometer 121 and a logarithmic analog/digital converter 110 which are combined with a microprocessor-based metering and control logic unit 106. It allows diversity reception over a very wide range of reception signals.
Patent FR-2569178-A1 (FR)
Title: Containment for molten materials such as glass, with zonal heating
Inventor: HIBON JOSEPH
IPC: C03B5/24
Filed: 1984-08-20
Abstract: The containment comprises a vessel 1 covered with a lid 2 and provided with a lower outlet orifice 3. Electrical resistors 8, 23, 30 and 64 are provided respectively behind the inner walls 7 of the vessel 1, behind the walls 20 of the orifice 3 and behind the lower wall 63 of the lid 2. These resistors are controlled as a function of the temperatures detected in the corresponding zones by sensitive members 13, 28 and 68 in order that the molten material which the vessel 1 contains should have a homogeneous temperature throughout its mass despite the different shapes which the said vessel 1 has. In addition, a heating resistor 55 may be provided in a hollow punch 50 and/or heating by a Joule effect in the glass mass (conductor) by virtue of an electrical circuit 70, 71, 72, 73 establishing an induced current between the orifice 3 and the punch 50, which are electrically conductive.
Patent FR-2556257-A1 (FR)
Title: Shearing machine for bent concrete reinforcing bar etc.
Inventor: SCHMIDT GERHARD
IPC: B26D7/27
Filed: 1984-12-13
Abstract: The machine is intended for cutting bar or strip material (1) coming from a straightening or bending machine.  It comprises two relatively movable blades (2,3) which define a shearing plane (S) and are arranged on opposite sides of the material and of that plane.  One blade (3) has its surface (6) facing the material provided with an embossing die (5).  The distance between the surface and the die is pref. shorter than the  shearing stroke. The die is arranged on the movable blade and the other blade remains stationary.
Patent WO-8504510-A1 (WO)
Title: Multi face multi videodisk reader
Inventor: FAY STEFAN DE
IPC: G11B25/04
Filed: 1985-03-29
Abstract: The reader is of the type comprising at least one video disk with two faces and at least one reading (and recording) head arm which is movably mounted to scan the different possible faces, knowing that the essential interest of this type of readers is that it has a plurality of video disks. It is characterized in that it comprises at least two independent scanners (23-24, 25-25, and 27-28) which are so mounted that they may read both faces of each video disk A, B and C, either simultaneously or separately. A plurality of embodiments enables to adapt the invention to different practical necessities. In particular, it is possible to provide modular installations, by means of which a user may adapt the capacity of its installations to increasing needs. The possibility of reading (or recording) two faces of a same disk provides important advantages since it is then possible to have access within an extremely short time and "continuously" to a considerable number of data or information, and this has practical consequences particularly for exploiting banks of images or for the making of films.
Patent FR-2560358-A1 (FR)
Title: Built-in chimney
Inventor: WODTKE INGFRIED
IPC: F24B1/192
Filed: 1985-02-06
Abstract: In a built-in chimney, the lockable door leaves 23, 24 placed in front of the hearth on the user side are equipped with at least one window 29 to 34 and, on the internal portion, with a dismantleable frame surrounding the window 29 to 34 and intended to receive at least one removable plate closing off the said window. A sealing zone 41 provided at the height of the grid inside the door leaves 23, 24 may comprise interruption points forming ventilation ducts.
Patent FR-2563664-A1 (FR)
Title: Procede de formation d'embouts de bougies d'allumage
Inventor: DIEHL LARRY F
IPC: B29K105/24
Filed: 1985-03-04
Abstract: L'INVENTION CONCERNE UN PROCEDE DE FORMATION D'EMBOUTS DE BOUGIES D'ALLUMAGE. ON EXTRUDE UN TUBE ELASTOMERE, PUIS ON LE CHAUFFE EN UN ETAT PARTIELLEMENT DURCI. ON DECOUPE ENSUITE LE TUBE EN ORGANES INDIVIDUELS QUE L'ON ETIRE SUR UNE BROCHE AYANT AU MOINS UN EPAULEMENT EXTERIEUR. ENSUITE, ON CHAUFFE LA BROCHE ET LE TUBE A UNE TEMPERATURE ET PENDANT UN LAPS DE TEMPS PERMETTANT D'ATTEINDRE UN DURCISSEMENT FINAL. ON DEMOULE LE TUBE DE LA BROCHE. LE DURCISSEMENT PAR COMPRESSION ET LE RETRAIT DONNENT LIEU A LA FORMATION D'UN EPAULEMENT INTERNE DANS LE TUBE, SI BIEN QUE CE DERNIER PEUT FAIRE OFFICE D'EMBOUT POUR UNE BOUGIE D'ALLUMAGE. LE PROCEDE DE L'INVENTION EST UTILISE POUR LA FABRICATION ECONOMIQUE D'EMBOUTS DE BOUGIES D'ALLUMAGE SANS FORMATION DE BAVURES ET DE DECHETS.
Patent FR-2578830-A1 (FR)
Title: Process for removing iron from red mud and bauxite, preparation of a starting material for the alumina industry and of iron pentacarbonyl
Inventor: CSIKOS REZSO
IPC: C01G49/16
Filed: 1985-03-14
Abstract: Process for removing iron from red muds and bauxite. The process comprises:   a. The activation of the starting red mud or bauxite at 150-800 DEG C at a pressure of 0.1 to 100 bar in a reducing gaseous stream, in the presence of one or more activators, and then, b. The carbonylation at 50-300 DEG C at a pressure of 25-300 bar, with carbon monoxide or a gas containing carbon monoxide, and the removal from the system of the iron pentacarbonyl thus formed.   Use for removing iron from a red mud.
Patent FR-2579060-A1 (FR)
Title: Carte de circuit imprime a echangeur thermique et procede de fabrication d'une telle carte
Inventor: BRICAUD HERVE
IPC: H05K1/02
Filed: 1985-03-18
Abstract: LA PRESENTE INVENTION CONCERNE UNE CARTE DE CIRCUIT IMPRIME A ECHANGEUR THERMIQUE INCORPORE. CETTE CARTE COMPREND SOLIDAIRES L'UN DE L'AUTRE, UN CIRCUIT MONO OU MULTICOUCHES ET UN DRAIN THERMIQUE 10, 11 COMPORTANT UN SYSTEME DE CANALISATION 17 PERMETTANT LA CIRCULATION D'UN FLUIDE CALOPORTEUR. APPLICATION AUX EQUIPEMENTS ELECTRONIQUES COMPORTANT UN GRAND NOMBRE DE CARTES.
Patent FR-2591250-A1 (FR)
Title: Flushing device controlled by push-button for water flushing tank
Inventor: MENDRAS PIERRE
IPC: E03D5/09
Filed: 1985-03-19
Abstract: Flushing device controlled by push-button for water-flushing tank, comprising : a valve 3 shutting the emptying orifice 0 of the tank, installed at the lower part of an overflow outlet pipe 2, a push-button 5 accessible from the outside of the said tank 8-8a; and a mechanism for lifting the said valve which may be activated by this push-button; characterised in that the said mechanism comprises a transmission rod 12 capable of being pushed back by the said push-button 5 and passing through the overflow outlet pipe 2, and a member 13 for lifting the said valve consisting of a cam installed in such a way that it can pivot at the lower end of the said transmission rod and arranged below the said valve, the said cam 13 bearing on a crosspiece 14 arranged fixedly through the outlet orifice 0 of the tank, below the seat 7a of the said valve.
Patent FR-2579130-A1 (FR)
Inventor: TISNE JEAN-LOUIS
IPC: B65H54/64
Filed: 1985-03-25
Abstract: 1. Method for producing a hollow body of complex shape by winding a composite product based on continuous fibres impregnated with a resin, according to which at least one layer of the said composite product, being in the form of a tape, is deposited on a surface carried by a forming body (1, 10) by means of an applicator device (5, 11, 20) fixed to the end of a telescopic member (21, 22), having a contact generatrix between which and the said surface the said product passes, the said surface being impelled in relation to the said applicator device by a relative movement of rotation about a fixed axis (3) and of translation parallel to the said axis, the combination of which defines the path of the tape on the body which may include a series of inflexions thus forming a course comprising, successively and relatively, convex paths and then concave paths, the product being applied without tension between the generatrix and the said surface, the generatrix being substantially perpendicular to the tangent to the path of the tape at the point of contact, and according to which the product thus deposited on the surface or the preceding layer is stabilised in the immediate vicinity of the point of contact, characterised in that the said applicator device (5, 11, 20) is maintained in contact under a substantially constant application force (13) and that the said telescopic member (21, 22) is maintained in a direction which is always substantially normal to the said surface at the point of contact.
Patent FR-2582767-A1 (FR)
Title: Improvements to frustoconical anchoring jaws
Inventor: JARTOUX PIERRE
IPC: E04C5/12
Filed: 1985-05-30
Abstract: The invention relates to a split frustoconical jaw intended to anchor a cable and composed of two, three or four identical keys 1 connected together, before implementing the jaw, by assembly means. These means comprise elastically compressible spacers 7 arranged side by side between the mutually opposing lateral plane faces 2 of these keys. The spacers in question are especially made up of elastomer studs or re-entrant loops of a metal strip surrounding the jaw.
Patent FR-2583531-A1 (FR)
Title: Procede et appareil pour nettoyer et steriliser les lentilles de contact.
IPC: A61L12/02
Filed: 1985-06-12
Abstract: LA PRESENTE INVENTION CONCERNE UN PROCEDE ET UN APPAREIL POUR NETTOYER LES LENTILLES DE CONTACT PAR L'ASSOCIATION D'UN TRAITEMENT THERMIQUE AVEC UN TRAITEMENT MECANIQUE VIBRATOIRE. LE TRAITEMENT THERMIQUE EST CONSTITUE: -D'UNE PREMIERE MONTEE EN TEMPERATURE DU LIQUIDE CONTENANT LESDITES LENTILLES DEPUIS LA TEMPERATURE AMBIANTET1 A UNE TEMPERATURET2 A LAQUELLE LA MATIERE COLLEE AUX LENTILLES NE SUBIT PAS DE DENATURATION, -D'UNE SERIE D'ARRETS ET DE MISES EN MARCHE D'ECHAUFFEMENT PERMETTANT L'OSCILLATION EN TEMPERATURE ENTRE LA TEMPERATURET2 ET UNE AUTRE TEMPERATURET3 INFERIEURE A T2 ET SUPERIEURE A T1, -ET ENFIN D'UNE DEUXIEME MONTEE EN TEMPERATURE DEPUIS T3 A UNE AUTRE TEMPERATURET4 SUPERIEURE A T2.
Patent FR-2583350-A1 (FR)
IPC: B62D47/02
Filed: 1985-06-14
Abstract: An intercirculation tunnel between successive railroad cars or highway vehicles for ensuring protection against bad weather and atmospheric agents as well as noise and heat insulation as a unitized structure with oval constant cross section. The structure has a self-supporting wall that is elastically deformable throughout without mechanical devices, and that is composed of a multilayer composite of compact elastomers including an outer layer and an inner layer which can also contain reinforcements and an intermediate layer of a cellular polymer material.
Patent FR-2566634-A1 (FR)
Title: Appareillage pour clouer les flancs d'une empeigne a une semelle correspondante, notamment dans des machines a monter les parties des chaussures
Inventor: CUCCHETTI CELESTE
IPC: A43D75/00
Filed: 1985-06-20
Abstract: L'APPAREILLAGE POUR CLOUER LES FLANCS D'UNE EMPEIGNE A UNE SEMELLE CORRESPONDANTE, SELON LA PRESENTE INVENTION, COMPORTE DEUX GROUPES 1 DE CLOUAGE AUTOMATIQUE DISPOSES EN POSITION SENSIBLEMENT SYMETRIQUE AUX DEUX COTES D'UNE FORME A CHAUSSURE SUR LAQUELLE L'EMPEIGNE EST ENFILEE. CHAQUE GROUPE SE COMPOSE ESSENTIELLEMENT D'UN MARTEAU MOBILE 4 LE LONG D'UNE LIGNE D'EXTENSION DU FLANC DE LA CHAUSSURE LEQUEL EFFECTUE UNE SERIE D'ENFONCEMENTS DE SEMENCES SELON UN PAS ET UNE LONGUEUR PREDETERMINES AU MOYEN D'UN DISPOSITIF A CAME 14, 54 PORTE PAR UNE COULISSE 6, 8 QUI SE DEPLACE EN SENS SENSIBLEMENT PARALLELE A LA FORME A CHAUSSURE.
Patent FR-2584572-A1 (FR)
Title: Device for storing hoops for use in pastry and cake manufacture
Inventor: CLAVIER ALAIN
IPC: A21B3/13
Filed: 1985-07-09
Abstract: Pastry and cake manufacture. Device for storing hoops for use in pastry and cake manufacture, characterised in that it consists of a rectangular frame 1 supported by a base 11, 12 so as to stand vertically, the said frame having upright members 2 and 3 and cross members 4 and 5 and comprising at least one vertical bar 6, 7, 8 joining the cross members together, the upright members 2 and 3 and the vertical bar 6, 7, 8 having sets 15 of at least three horizontal bars placed above each other, the top bar 15 in each set being designed to carry large-diameter hoops 16, the middle bar 15a of each set being designed to accommodate medium-sized hoops 17 and the bottom bar 15b small hoops 18, and the intervals separating the top bar 15 in each set from the top bar of a neighbouring set being greater than the diameter of the large hoops 16.
Patent FR-2568822-A1 (FR)
Title: Composition refractaire stratifiee et son procede de formation
Inventor: MOORE JOHN RICHARD
IPC: B22C1/16
Filed: 1985-08-07
Abstract: L'INVENTION CONCERNE UN PROCEDE DE FORMATION D'UNE COMPOSITION REFRACTAIRE STRATIFIEE SUR UNE SURFACE. LE PROCEDE CONSISTE A APPLIQUER EN ALTERNANCE SUR LA SURFACE UNE COMPOSITION A BASE DE SOL DE SILICE COLLOIDALE BASIQUE ET UNE COMPOSITION A BASE DE LIANT HYBRIDE ACIDE, DE SORTE QUE CHAQUE COUCHE DE L'UNE DES COMPOSITIONS SOIT AU CONTACT D'UNE COUCHE DE L'AUTRE COMPOSITION, ET A SECHER CHAQUE COUCHE APPLIQUEE JUSQU'A CE QU'ELLE ATTEIGNE UNE DURETE SUFFISANTE POUR QUE LES COUCHES APPLIQUEES NE SE SOULEVENT PAS DE LA SURFACE LORS DE L'APPLICATION D'UNE COUCHE SUIVANTE. APPLICATION A LA FABRICATION DE MOULES-CARAPACES POUR LE MOULAGE A MODELE PERDU.
Patent FR-2589919-A1 (FR)
Title: Flexible floor for a judo mat and method for assembling such a floor
Inventor: MESSNER BERNARD
IPC: E04F15/22
Filed: 1985-11-08
Abstract: The invention relates to a flexible floor for a judo mat consisting mainly of plates forming a mat support and by plate-supporting means mounted on springs, and a method for assembling such a floor. Floor characterised in that the plate-supporting means 11 consist of floor runners 1 installed parallel with respect to the longitudinal edge of the mat, and fixed to joists 2 which are themselves arranged parallel to each other, and perpendicular to the floor runners 1, the joists being mounted on springs via clamps and the distance, on the one hand, between two floor runners 1, and, on the other hand, between two joists 2, as well as the characteristics of the springs 3 and their positioning conferring on the floor a rigidity and an elasticity such that any vibratory effect linked with the throws is eliminated.
Patent FR-2590610-A1 (FR)
Title: Composite roofing assembly based on metal elements in particular, forming a waterproof, flat and smooth covering
Inventor: BOLLOTTE FABRICE
IPC: E04D3/30
Filed: 1985-11-25
Abstract: The invention relates to a roofing having a plane and smooth appearance, the external part of which is made up of a decking having a plane external appearance. It consists of a conventionally designed roofing 1, covered with an upper assembly 2, with hidden fixing systems, the external part of which may be dismantled.
Patent FR-2591624-A1 (FR)
Title: Method for stonewashing fabric
IPC: C11D11/00
Filed: 1985-12-16
Abstract: The present invention relates to a method for stonewashing a set of fabrics 15. The set of fabrics or garments 15 which are mixed with abrasive solids 16 are set in motion in a volume of liquid 14. The invention is characterised in that expanded clay blocks 16 are used as solids. Application especially to industrial stonewashing of garments of the jeans type.
Patent FR-2592731-A1 (FR)
Title: Terminal d'un reseau de transmissions de donnees numeriques a commutation par paquets
Inventor: CHARBONNIER PHILIPPE
IPC: H04L69/40
Filed: 1986-01-03
Abstract: Un terminal 1 est pourvu d'un dispositif de réveil 11 en permanence sous tension. Lorsqu'il n'y a pas d'échange d'informations utiles avec le réseau 21, le dispositif de réveil 11 simule le bon fonctionnement des circuits de couche de liaison du terminal en émettant et en recevant des drapeaux. Lorsqu'il détecte une absence de drapeau, le dispositif de réveil 11 commande la mise sous tension du reste du terminal 12. Le dispositif de réveil permet de réduire la consommation en énergie et d'améliorer la durée de vie du terminal. (CF DESSIN DANS BOPI)
Patent FR-2593084-A1 (FR)
Title: Catalyseur contenant une mordenite, sa preparation et son application a l'isomerisation de coupes riches en paraffines normales.
Inventor: DUFRESNE PIERRE
IPC: C10G45/60
Filed: 1986-01-22
Abstract: L'invention concerne un catalyseur renfermant en poids : a) de 10 à 99,99% d'une mordénite se présentant en majeure partie sous forme d'aiguilles et ayant un rapport atomique Si/A1 d'environ 5 à 50, une capacité d'adsorption de benzène supérieur à 5% en poids par rapport au poids de mordénite sèche, un volume de la maille élémentaire de 2,73 à 2,78 nm**3 , une teneur en sodium inférieure à 0,2% poids, et adsorbant des molécules de diamètre cinétique supérieur à environ 6,6 10**-10 m, b) de 0 à 89,99% en poids d'une matrice, c) de 0,005 à 15% en poids d'au moins un métal du groupe VIII, et Le catalyseur est utilisé dans les réactions d'hydroisomérisation de coupes riches en paraffines normales ayant de 4 à 7 atomes de carbone par molécule pour obtenir avec une bonne conversion et une bonne sélectivité un mélange contenant une proportion importante d'isoparaffines.
Patent FR-2589757-A1 (FR)
Title: Unite monobloc pour la ventilation et la circulation d'un fluide a l'interieur d'une cabine de peinture et pour le durcissement de couches de peinture apposees sur des produits peints a l'aide d'un processus a air chaud ou d'un processus chimique
Inventor: VALENTINI MARCELLO
IPC: B05B15/12
Filed: 1986-02-04
Abstract: CETTE UNITE 10 COMPREND UNE STRUCTURE METALLIQUE FORMEE D'UN CORPS PRINCIPAL A POSSEDANT UNE OSSATURE 11 MUNIE DE CLOISONS 12 A 18, ET D'UN CORPS AUXILIAIRE B RELIE A UNE CABINE DE PEINTURE C ET COMPORTANT UNE OSSATURE 51 MUNIE DE CLOISONS 52 A 55, UN SAS A AIR 19, 19, DES PORTES ARTICULEES 36, 66 FERMANT DES ESPACES ENTRE LES CLOISONS, DES FILTRES D'ADMISSION D'AIR 23, DES VENTILATEURS COAXIAUX 32, 33 INTRODUISANT DE L'AIR DANS UNE CLOISON 16 OU EST MONTE UN ECHANGEUR DE CHALEUR 35, ET UN FILTRE 38 DE L'AIR SORTANT DE LA CABINE ET ENTRAINE PAR DES VENTILATEURS 39, 40 ET TRAVERSANT UN REGULATEUR DE DEBIT 47. APPLICATION NOTAMMENT AUX CABINES DE PEINTURE DE VEHICULES AUTOMOBILES.
Patent FR-2594741-A1 (FR)
Title: Machine for cutting out the porches of miniature ceramic houses
IPC: B28D1/22
Filed: 1986-02-27
Abstract: The invention relates to a device making it possible to cut out the porches of miniature ceramic houses; at different depths. It consists of a chassis 1 on which there are fixed 2 bearings supporting an arm 7 which moves in the vertical plane. The arm 7 comprises: a control knob 8 and an interchangeable cutting blade. A mobile carriage 11 moves in the horizontal plane on guides 12, this carriage supports the workpiece 10, the movement of the carriages is controlled by a thrust rod 5 comprising a roller, coming into abutment on the arm 7 during the cutting operation. An extractor 6 removes the falling earth inserted in the blade as the workpiece is being cut. A return spring 3 causes the arm to clear the work station. A retractable stop 4 allows porches of different depths to be made. The device according to the invention is particularly intended for cutting out the porches.