EP0382127B1 - Disposition d'un cadre tendeur pour artistes - Google Patents

Disposition d'un cadre tendeur pour artistes Download PDF

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Publication number
EP0382127B1
EP0382127B1 EP90102157A EP90102157A EP0382127B1 EP 0382127 B1 EP0382127 B1 EP 0382127B1 EP 90102157 A EP90102157 A EP 90102157A EP 90102157 A EP90102157 A EP 90102157A EP 0382127 B1 EP0382127 B1 EP 0382127B1
Authority
EP
European Patent Office
Prior art keywords
canvas
stretcher
turned
stretcher frame
over
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP90102157A
Other languages
German (de)
English (en)
Other versions
EP0382127A3 (fr
EP0382127A2 (fr
Inventor
Renato Lucchetti
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ColArt International SA
Original Assignee
ColArt International SA
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Filing date
Publication date
Application filed by ColArt International SA filed Critical ColArt International SA
Publication of EP0382127A2 publication Critical patent/EP0382127A2/fr
Publication of EP0382127A3 publication Critical patent/EP0382127A3/fr
Application granted granted Critical
Publication of EP0382127B1 publication Critical patent/EP0382127B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44D—PAINTING OR ARTISTIC DRAWING, NOT OTHERWISE PROVIDED FOR; PRESERVING PAINTINGS; SURFACE TREATMENT TO OBTAIN SPECIAL ARTISTIC SURFACE EFFECTS OR FINISHES
    • B44D3/00—Accessories or implements for use in connection with painting or artistic drawing, not otherwise provided for; Methods or devices for colour determination, selection, or synthesis, e.g. use of colour tables
    • B44D3/18—Boards or sheets with surfaces prepared for painting or drawing pictures; Stretching frames for canvases
    • B44D3/185—Stretching frames for canvases

Definitions

  • the present invention relates to an artists' framing arrangement.
  • stretchers As is known, artists' framing arrangements or stretchers have hitherto comprised a stretcher part on which the canvas is fixed by means of metal tacks or staples. Fixing of this type takes place at the outer perimeter edge of the stretcher.
  • stretchers may fundamental be sub-divided into two types, more specifically rigid, that is non-expandable, stretchers and expandable stretchers having mobile sides.
  • the gap or distance between the tacks must on the one hand be sufficiently small to reduce such phenomena and permit uniform tensioning of the canvas, but on the other hand the tacks act like wedges in the stretcher and an excessively short distance between them may result in breakage of the stretcher.
  • the tacks act like wedges in the stretcher and an excessively short distance between them may result in breakage of the stretcher.
  • a further disadvantage of the known expansion stretchers resides in the fact that they can possess only a quadrangular shape, while there is a demand on the market for different forms also, for example oval forms. In these cases, the application of means of tensioning the canvas is impossible, and the user has to fix the canvas in the traditional manner, with tacks or staples.
  • a further disadvantage of the known expansion stretchers resides in the fact that, particularly with large dimensions, they require cruciform inserts in order to stiffen them, the practical efficacy of which is somewhat limited since, as is well known, good stiffening of the canvases is achievable only with corner diagonals.
  • US-A-4 635 700 discloses a tensioning expandable frame consisting of an inner structure and an outer structure. Both structures are connected, with a clearance, by means of bolts stressed by adjusting springs. On the outer structure and on the inner structure section parallel to the outer structure, the canvas is fixed to the structures by means of tacks. Grommets attached to the canvas receive the hooked ends of springs whose other ends are firmly attached by means of turnbuckles to the inner structure, as well as to the outer structure.
  • the edge regions of the canvas receiving the grommets may form a sleeve containing rigid bars for distribuiting the forces exerted by the springs uniformly along two canvas edge regions.
  • the stretcher frame requires complicate independent structures (2 structures in the embodiment of figures 1 and 5 and 3 structures in the embodiment of figure 2) with altogether more than the usual 4 frame sides, that is 7 (in the embodiments of figures 1 and 2) and 10 (in the embodiment of figure 5).
  • the disclosed frames are expandable ones, that is in order to compensate canvas deformations the outer movable structure/structures is/are spread apart from the internal structure so that the frame area increases. Therefore said expandable structure frames having a variable area cannot be housed in a picture frame because the means fixing the stretcher in the frame seat would hinder any displacements of the stretcher movable structure(s). Further, the disclosed expandable frame still requires tacks for fixing two opposite edge regions of the canvas to the frame.
  • EP-A-0 229 636 discloses a non-expandable frame assembly, comprising frame sections interconnected by means of elbows. On the inner side of the frame sections are provided ridge elements. A canvas is folded around the sections and the ridge elements and then fixed onto the ridge elements by means of a plurality of clips. Fig. 2 shows that said clips are featured on principle as clothing-pins.
  • the disclosed invention provides stretcher frame assemblies which are both simple to use and reuse, for instance by students, avoiding the inconveniences of the stretcher frames with canvas mounted thereon by means of tacks or staples.
  • the canvas when mounting the latter on the frame, is positioned totally over said frame ridges and secured thereto by means of said clips.
  • the canvas is pulled totally and clipped to the ridge at a plurality of points along the length of each frame section in order to provide the desired mounting tension to the canvas along this edge thereof.
  • the clips are merely disengaged from the ridge and the canvas and the frame separated.
  • the stretched canvas is clamped on the stretcher frame both the canvas and the frame are rigidly fixed together. It follows that the constant tension on the canvas per se is unable to compensate automatically possible deformations of the canvas, and that the canvas, due to the clamping thereof on the frame ridges, cannot carry out any sliding movements on the stretcher frame.
  • EP-A-0 229 636 provides a skillful solution to mount and remove repeatedly canvas on stretcher frames without tacking or stapling, but it does not set forth or disclose any suggestions for compensating automatically canvas deformations.
  • the object underlying the present invention is to create an artists' framing arrangement which is capable of overcoming the inconveniences and disadvantages of the current stretchers forming a part of the prior art, and permits the application of the canvas with resilient pre-stressing on the stretcher frame in a simple and rapid manner, without the use of the known tacks or staples, or in a removable manner, the fixing of the canvas with resilient pre-stressing being achieved by means of resilient elements which are easy to produce and simple to apply, or to remove.
  • the abovementioned object includes the production of a non-expandable stretcher of the rigid type, which can be assembled in a simple and rapid manner, employing sides which can be produced from any chosen material, preferably plastic, for example on the basis of extruded profiles and subsequent cutting to size.
  • these resilient means can be applied in an extremely simple and arbitrary manner, they can be applied without problems by young people, students and ladies alike, as a result of which a substantial widening of the market proves possible, for example into the school and amateur sectors.
  • These springs whose resilient behaviour is extremely reliable, can be applied manually without the need for any equipment or tools, as a result of which the assembly of the picture can readily and conveniently be carried out at home, or at school or in the open air.
  • the canvas can easily be removed from the stretcher, which is non-expandable but advantageously capable of being dismantled, and carried for example in the known draughtsman's tubes.
  • the said stretcher can also be used repeatedly by the artist, or student, as a support for the canvases, with the associated practical advantages.
  • the traction on the canvas is of the continuous type, and furthermore the canvas is under uniform traction over the entire length of the sides of the stretcher.
  • the known "crescent" deformations between adjacent tacks are avoided, and furthermore the perimeter edge of the stretcher is devoid of tacks and staples. Since the stretchers are of the non-expandable type, they possess a constant dimension in terms of bulk, so that such stretchers can be accommodated without difficulty in the appropriate seatings of standardized picture frames.
  • the proposed non-expandable stretcher of rigid type can advantageously be produced without the use of wooden profiles.
  • the said stretcher can, in fact, advantageously consist of plastic stretcher sides cut from initial extruded profiles which advantageously possess internal ribbings and chambers.
  • right-angled corner-pieces are advantageously provided to be introduced into such chambers. The latter, after the assembly of the stretcher, are concealed and the stretcher can be dismantled at anytime.
  • the user can thus cut the stretcher sides to the desired size, either starting from the extruded profile or cutting the sides of a larger stretcher, for example acquired in the loose form, together with the canvas and the springs for fixing and pre-stressing the canvas.
  • the user may acquire separately these springs, the canvas and the stretcher sides, or the appropriate extruded profiles, and the connecting corner-pieces, and may conveniently create his own stretchers to suit requirements.
  • the grooves necessary for the engagement of the springs for fixing the canvas are already produced thereon during the act of extrusion.
  • the known perimeter projections of the stretcher sides for supporting the canvas with a limited contact with the stretcher front and rear surfaces are of course likewise made on such plastic profiles as one piece construction. It is further possible to provide resilient spring means engaging directly on two opposite sides of the canvas. This further simplifies the fixing and the resilient pre-stressing thereof.
  • the spring elements for fixing of the type bent substantially at right angles, furthermore advantageously permit the fixing and pre-stressing of the canvas on stretchers of a desired shape, for example oval stretchers.
  • the stretchers can possess dimensions virtually as small as desired.
  • a further advantage of the stretcher made from plastics profiles resides in the fact of providing on the stretcher sides, a fixing projection for diagonal stiffening supports for stretchers of large dimensions.
  • a further advantage of the resilient pre-stressing springs according to the invention resides in the fact that the artist can select the degree of tensioning of the canvas in a simple manner as a function of the number of springs used and of the elastic pre-stress imparted to each spring.
  • Another important advantage resides in the fact that canvases which have previously been fixed to other stretchers in a traditional manner can be satisfactorily fixed on the proposed stretchers, which is particularly important in the sector of the fine arts, the antique trade and, in particular, restoration. For restorers, in fact, it is extremely important to be able to cut the new stretcher to size in situ and to apply the canvas reliably and rapidly.
  • sectional stretchers with resiliently pre-stressable canvases may be found in the description which follows, with reference to the attached drawings, in which are illustrated a preferred embodiment and a number of variations of the sectional stretcher and of the proposed resilient spring elements for fixing and tensioning the canvas.
  • the artists' framing arrangement or sectional structure with canvas according to the invention is illustrated as a whole at 1. It is substantially formed from three components, more specifically a support structure 2 or stretcher frame, advantageously of the rigid type, a canvas 3 and a plurality of resilient elements 4 serving simultaneously to fix and to tension the canvas 3.
  • the stretcher in the example illustrated, comprises four stretcher sides 5, which are obtained by simple end cutting at 45° from an extruded plastic profile, for example of the type illustrated in Figs. 2 and 5.
  • Such plastics profile is preferably symmetrical and possesses, for reasons of light weight and greater strength, internal chambers 6 and ribbings 7.
  • Projections 8 serving, in a known manner, to keep the canvas 3 at a distance from the remaining anterior and posterior frontal surface 5a, 5b of the stretcher sides 5 are produced on the external frontal sides of the said plastics profile.
  • the stretcher sides 5 on their internal depthwise side 5c in the assembled state, possess one or more grooves 9 for the engagement of the leaf springs 4, as explained below.
  • Fig. 5 there is also made on the said internal depthwise side a projection, for example of dovetail type, 10 for anchoring a diagonal reinforcing support 11, to which further reference will be made subsequently.
  • angular supports 12 are used (Fig. 3). These possess, for example, a hollow cross-section having at least one deformable side, for example a convex side, in order to guarantee a pressure fit when they are inserted into the chambers 6.
  • the fixing and the resilient pre-stressing, or tensioning, of the canvas 3 on the stretcher 2 take place simultaneously by means of the employment of spring elements 4, preferably leaf springs of the type having wings 4a, 4b folded back at an angle of less than 90°, as illustrated in Figs. 4 and 6 - 8.
  • spring elements 4 preferably leaf springs of the type having wings 4a, 4b folded back at an angle of less than 90°, as illustrated in Figs. 4 and 6 - 8.
  • apertures 13 are made, the purpose of which is to render the said wings 4a and 4b more resilient and thus to prevent forced opening or spreading of the folded edge 14, which would compromise the resilient behaviour of the spring 4.
  • the latter possesses, in the wider end of the wing 4a, a plurality of pointed teeth 15 folded over approximately orthogonally relative to the said wing 4a, while in the shorter wing 4b the free end 16 is bent over inwards, more precisely in a manner such as to engage in the one or more grooves 9 mentioned above.
  • the teeth 15, for their part engage into the edge 3b of the canvas 3, folded over along the posterior frontal side 5b of the strips 5, and more specifically at a distance therefrom resulting from the presence of the abovementioned projections 8.
  • the spring 4 when applied, does not project beyond the said projections 8 and does not increase the bulk of the assembled stretcher 1, so the latter can conveniently be accommodated in the respective frame.
  • the springs for fixing and resiliently pre-stressing the canvas 3 may also possess a strip conformation, as shown in Fig. 11.
  • the spring is designated as a whole by 17, and possesses two plate portions 18 provided, on their outer side, with a plurality of teeth 15 as referred to above, the said toothed plate portions 18 being mutually associated by an interposed spring 19, for example a wire-like spring of zig-zag conformation.
  • an interposed spring 19 for example a wire-like spring of zig-zag conformation.
  • the spring 19 may also take the form of a strip of rubber or the like.
  • the number of springs 4, or 17, may be selected arbitrarily by the user as a function of the dimensions of the picture and of the desired degree of tensioning, or as a function of the desired requirements in each case. Given the selected conformation of the springs 4 and 17, their application, and removal if required, can be performed by the user easily, quickly and safely, without exertion and without special tools. With this new concept of tensioning the canvas 3, the latter comes to bear uniformly along the outer edges 5d and 5e of the stretcher 2, over which edges it is stressed to slip, and in this way the known "crescent" deformations, inevitable with the use of metal clips and tacks, are reliably avoided.
  • such diagonals 11 may possess a rigid strip-shaped median portion 20 with end shoes 21, which shoes, at their opposed chamfered ends 22, engage on the outer sides of the profiled projection 10 (Figs. 9, 10). Said shoes are mutually clampable by means of at least one screw 23 and are fixed, for example hinged, as desired, and in a manner not illustrated in greater detail, to the rigid strip-shaped median portion 20.
  • the reinforcing diagonals 11 may possess any desired length, or be cut to the desired length, and may be disposed, for example, as illustrated in Fig. 9.
  • the abovementioned clamping shoes 21 are freely mobile to slide along the projection 10, as a result of which the length of the diagonals 11 need not be particularly precise.
  • a good pressure fit between the assembly corner-pieces 12 and the chambers 6 of the stretcher sides 5 may also be achieved, for example, by providing pointed ribbings 24 (Fig. 5) or using corner-pieces 12 of a slightly yielding material, for example rubber or the like, for example for use in schools.
  • the said stretcher may readily be produced with stretcher sides of a different kind, or of different material, for example metal, wood, or the like, and similarly the assembly of the sides of the stretcher may be undertaken in the most varied ways, from simple tacking to moulding in one piece construction, again without departing from the scope of protection of the invention.
  • the stiffening diagonals also, may possess any desired shape, and for example may take the form of simple profiles, for example metal profiles, perforated at their ends, hinge pins being inserted in said perforations and passing respectively into one of a plurality of perforations made in a projection analogous to the projection 10 illustrated above. In view of the simplicity of this operation, it is not illustrated.

Landscapes

  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
  • Mirrors, Picture Frames, Photograph Stands, And Related Fastening Devices (AREA)

Claims (5)

  1. Agencement de cadre pour artiste comprenant :
    a) un cadre tendeur non expansible (2) pour supporter une toile (3), où le cadre tendeur (2) se compose de côtés tendeurs en plastique (5) qui sont joints à leurs extrémités, coupées à 45°, au moyen de l'interposition d'au moins un support à angle droit ou angulaire,
    b) une toile (3) ayant une aire de surface plus grande que le cadre tendeur (2) pour permettre le repliement, de tous les bords périphériques (3b) de ladite toile sur le côté postérieur (5b) du cadre tendeur supportant (2),
    c) une pluralité d'éléments formant ressort (4, 17) agissant pour fixer et ainsi tendre la toile (3) sur ledit cadre tendeur (2), de sorte que lesdits éléments formant ressort sont répartis le long de tout le périmètre du cadre tendeur (2) et chaque élément formant ressort étant positionné sélectivement en un emplacement du bord de toile replié respectif (3b) pour exercer une force de tension constante audit emplacement et par quoi chaque élément formant ressort assujettit amoviblement la toile (3) sur le cadre tendeur (2), caractérisé en ce que
    d) chaque élément formant ressort (4 ; 17) est en prise, à une extrémité de celui-ci, avec un bord de toile replié (3b) et, à l'autre extrémité, avec une zone adjacente (5b) du cadre tendeur (2) ou avec un bord de toile replié opposé (3b) pour exercer une force de précontrainte, agissant continuellement, sur la toile montée (3) qui entoure, de façon glissante, le cadre tendeur.
  2. Agencement de cadre pour artiste selon la revendication 1, dans lequel les éléments formant ressort (4) sont amoviblement montés sur le cadre tendeur (2) et coopèrent avec le bord de toile replié (3b), caractérisé en ce que chaque élément formant ressort (4) consiste en une plaque repliée selon un certain angle de façon à former deux ailes (4a, 4b) de préférence à ouvertures (13), leurs extrémités libres possèdant, dans un cas, une pluralité de dents (15) pour venir en prise avec ledit bord de toile replié adjacent (3b) et, dans l'autre cas, un rebord replié de montage (16) apte à venir en prise avec un côté interne en profondeur (5c) du cadre tendeur (2), de préférence dans une assise rainurée appropriée (9).
  3. Agencement de cadre pour artiste selon la revendication 1, dans lequel les éléments formant ressort (17) sont amoviblement montés sur un bord de toile replié (3b) et coopèrent avec le bord de toile replié opposé (3b), caractérisé en ce que chaque élément formant ressort (17) consiste en une paire de portions formant plaque (18) situées dans un plan commun et reliées entre elles par un ressort (19), chaque portion formant plaque (18) se terminant par une pluralité de dents (15) pour entrer en prise avec ledit bord de toile replié (3b) et avec ledit bord de toile replié opposé (3b), espacés l'un de l'autre.
  4. Agencement de cadre pour artiste selon la revendication 1, caractérisé en ce que la partie extrudée en matière plastique d'origine ou les côtés tendeurs individuels (5) possèdent, sur le côté interne en profondeur (5c), une saillie profilée (10) pour la fixation de deux patins extrêmes opposés (21, 22) d'une diagonale raidisseuse (11), la fixation serrée desdits patins (21, 22) étant réalisée au moyen d'une vis (23) passant à travers ledits patins (21, 22).
  5. Agencement de cadre pour artiste selon la revendication 1, caractérisé en ce que lesdits supports angulaires (12) sont produits à partir d'une matière déformable, par exemple à section creuse, en métal et/ou en matière plastique ou des nervurages sont prévue dans les chambres d'assise (6) desdits supports angulaires (12) pour accouplement à ajustement à pression desdits supports angulaires (12) dans lesdites chambres d'assise (6).
EP90102157A 1989-02-10 1990-02-03 Disposition d'un cadre tendeur pour artistes Expired - Lifetime EP0382127B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT941689 1989-02-10
IT941689 1989-02-10

Publications (3)

Publication Number Publication Date
EP0382127A2 EP0382127A2 (fr) 1990-08-16
EP0382127A3 EP0382127A3 (fr) 1991-06-12
EP0382127B1 true EP0382127B1 (fr) 1994-12-07

Family

ID=11129826

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90102157A Expired - Lifetime EP0382127B1 (fr) 1989-02-10 1990-02-03 Disposition d'un cadre tendeur pour artistes

Country Status (4)

Country Link
EP (1) EP0382127B1 (fr)
AT (1) ATE115060T1 (fr)
DE (1) DE69014662D1 (fr)
ES (1) ES2067573T3 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2667541B1 (fr) * 1990-10-03 1995-04-14 Alain Roche Dispositif d'auto-regulation des tensions pour chassis beaux-arts.
US5502906A (en) * 1993-10-05 1996-04-02 Ebaris Co., Ltd. Cloth fixing frame with corner and cloth fixing members
IT1278407B1 (it) * 1994-11-17 1997-11-20 Walter Lucchetti Telai espandibili per pittori e molle per la formazione dei detti telai
FR2731949B1 (fr) * 1995-03-22 1999-01-22 Tudela Beneyto J Chassis expansible pour supporter des toiles de peintre
TW383217B (en) * 1995-06-20 2000-03-01 Ebaris Co Ltd Coupling structure and cloth stretching frame using thereof
FR2789101B1 (fr) * 1999-01-29 2001-03-02 Jean Marc Scherrer Dalle de plafond
FR2793504B1 (fr) * 1999-05-11 2001-11-09 Jean Marc Scherrer Dalle de plafond
FR2793506B1 (fr) * 1999-05-11 2001-11-09 Jean Marc Scherrer Dalle de plafond a relief externe
DE10231094B4 (de) * 2002-07-10 2004-07-29 Axel Zacharias Bilderrahmen
NL1034769C2 (nl) * 2007-10-16 2009-04-20 Johannes Hendrikus Ninaber Spanraam voor in het bijzonder schildersdoek.
RU206952U1 (ru) * 2021-03-09 2021-10-04 Общество с ограниченной ответственностью "Евробокс" Холст для рисования на подрамнике с опорой

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4635700A (en) * 1984-01-16 1987-01-13 Berger Gustav A Self-adjusting canvas tensioning frame
US4702025A (en) * 1985-11-25 1987-10-27 M & M Displays Display frame
DE3770479D1 (de) * 1986-01-14 1991-07-11 James R Vilman Zusammengestellter spannrahmen.

Also Published As

Publication number Publication date
EP0382127A3 (fr) 1991-06-12
DE69014662D1 (de) 1995-01-19
EP0382127A2 (fr) 1990-08-16
ES2067573T3 (es) 1995-04-01
ATE115060T1 (de) 1994-12-15

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