• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Auxiliary device for preservation processes on painted fabric supports. The present invention refers to an auxiliary device for carrying out conservation techniques for works on fabric supports, especially: thread-by-thread suture, textile intarsia and reinforcement bridges. The device includes: - a frame; - a tensioning system for the threads (12) used to treat the canvas with individually adjustable elements in each corner of the frame: pins (1), threaded rods (2), nuts (3) and washers (4); - a magnetic system that includes: - a U-shaped gutter, made of ferromagnetic material, attached to each of the outer edges and each of the inner edges of the four slats (8) of the frame; - a set of magnets (11) of adequate size to be inserted in the gutters that are attached to the edges of the frame slats. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2782399A1
    申请号:ES201900038
    申请日:2019-03-13
    公开日:2020-09-14
    发明作者:Ortiz María Alicia Sanchez；Emanuel Sterp
    申请人:Universidad Complutense de Madrid；
    IPC主号:
    专利说明:

    [0002] Auxiliary device for preservation processes on painted fabric supports
    [0004] Technical sector
    [0006] The present invention falls within the field of preserving paintings on canvas. More specifically, it falls within the field of auxiliary tools that enable different interventions on painted fabric supports.
    [0008] Background of the invention
    [0010] In recent times there have been great advances in applied research in the field of conservation and restoration of Cultural Heritage with the aim of guaranteeing the maximum respect for the original. The term re-treatability defines the fact that a material or process used by the restorer must allow future interventions if they are convenient to guarantee the survival of the work. In this sense, the principle of minimum intervention has been acquiring more and more importance, reducing action to what is strictly necessary.
    [0012] In the specific case of painted fabric supports, progress has been constant as a result of the search for new operating methodologies that allow a better response to each case study. In parallel, the evolution of the criteria has generated a growing interest among professionals towards the use of new materials and the development of innovative technical procedures that offer the possibility of reducing the risks derived from excessively invasive treatments carried out in the past. and whose potential damages have been widely demonstrated in publications and scientific meetings of the sector.
    [0014] There are many systems that conservators-restorers usually use to consolidate a tissue from a damaged pictorial support. Next, we will analyze some examples:
    [0016] - Suture thread by thread
    [0017] The thread-by-thread suture, called thread-by-thread tear mending, was a method developed in Germany in the 1980s by Wolfram Gabler for the treatment of a tear in a painting by Ferdinand Hodler (Gabler, W. Eine Moglichkeit der Restaurierung von Rissen in Leinwanggem alden ohne Doublierung, dargestellt am Beispiel des Gemaldes "Die Nacht" von Ferdinand Hodler, Mitteilung des Deutschen Restauratorenverbandes 1980/81; pp. 22-25). The perfection of the technique is due to Wilfried Heiber. , with his research on the behavior of fabric supports and on the mechanism of the formation of tears, contributed to spread it internationally. The method is a more effective alternative compared to traditional techniques such as drapery, the placement of patches and perimeter bands, considered today as too interventionist alternatives under the current criterion of minimal intervention.
    [0019] The thread-by-thread suture technique consists of restoring the damaged type of ligament in the weft and warp through the application of a minimal amount of adhesive to weld the ends of the broken threads with the help of different binocular magnifiers, spatula thermal, dental probes, needles, etc. Heiber advises using a mixture composed of wheat starch paste (10%) and sturgeon tail (20%), in a 1: 1 ratio, being essential to control both the amount of product and the pressure exerted with the micro -spatula thermal (Heiber, W., Demuth, P. (2006). Textile microsurgery for the treatment of tears in paint on canvas (p. 103). UPV Editorial. Translated by Marie Louise Sauerberg).
    [0021] The final objective is to restore the continuity of the support, limiting itself only to the damaged area, without altering the material authenticity since, once the intervention has been carried out, it is invaluable. The system allows to obtain an optimal structural behavior of the fabric and favors the re-treatability of the intervention.
    [0023] Since the edges of the tears tend to deform, producing compression separation, it is necessary to treat them to bring the separated ends of them closer to the site of origin and then perform the suture thread by thread. Heiber designed a device called «Trecker», a mechanism that serves to join the edges of the tear by exerting a traction perpendicular to it, which allows working on the work both horizontally and vertically, without having to remove the fabric from the frame and It has a screw system to apply the necessary tension to the braided synthetic threads. These, in turn, are connected to the original canvas by Power-Strip ™ double-sided adhesive webbing strips (Heiber, W., Demuth, P. (2006). Textile microsurgery for the treatment of tears in paint on canvas (p. 87). UPV Editorial. Translated by Marie Louise Sauerberg).
    [0025] - Intarsia
    [0027] When the pictorial support shows a loss, it is necessary to carry out a textile intarsia, which consists of the placement of a new fabric that should adapt to the exact shape of the lagoon. Said fabric must have characteristics very similar to the original support in terms of the nature and thickness of the threads, the density of the fabric, as well as the type of weft and color. The grafts used are cut to the exactness of the gap, in such a way that they fit perfectly in the hole and allow the continuity of the damaged tissue to be restored. Some grafts with frayed edges (sun type) have also been experimented with.
    [0029] Areas treated with intarsia may require the addition of a reinforcing element:
    [0031] 1. As one of the most invasive methods to reinforce these interventions, patches of different tissues are used, both natural and synthetic and of different thicknesses, with the threads frayed at the edges, or cut with the zigzag scissors.
    [0033] 2. As an alternative to patches and with the aim of reducing the amount of material for the intervention, a grid made of polyester threads can be placed that intersect with each other to form a weft in order to distribute the forces in a specific way . The method of applying the adhesive by points and the structure of the lattice allow to obtain an adequate planarity in the damaged area, which helps to solve the mechanical problem in a localized way. After curing the adhesive, the threads are cut and the grid is removed.
    [0035] 3. Another reinforcement method that meets the minimum intervention criterion is based on the use of the reinforcement bridges described below.
    [0037] - Reinforcement bridges
    [0039] It is a very effective operation to reinforce a rupture, a tear or a graft. The individual threads are placed perpendicularly on the suture line, at the distance deemed necessary for each case, and are adhered with the help of different types of adhesives depending on the characteristics of the work.
    [0040] Magnets also allow the elimination of point deformations and can help to achieve good results in the process of fixing pictorial layers with failure in the binder. An example is the one described by Roberto Bestetti (Bestetti, R. Risarcimiento strutturale e trattamento delle lacune: il case of the Giardini Romani di Giacomo Baila deputy. 2005. Congresso Nazionale IIC IG Lo stato dell'arte 3, Nardini, pp. 336-343 ) in which it uses a metal plate and a small magnet (0.5 cm in diameter), both coated with silicone Melinex, to flatten the edges of a 3 cm laceration.
    [0042] The contribution of the magnetic kit, made by the Italians Luigi Rella and Lucia Saccani, also stands out. This system consists of two galvanized steel plates and several magnets that are placed in specific areas to correct deformations without dismantling the frame work (Rella, L. and Saccani, L. (2006). A ragionate restoration. La Crocifissione di Stephan Kessler. Saonara: II Prato, Notebook No. 3 CESMAR7. ISBN 88-89566-59-0). Specifically, they use magnets to restore the flatness of the canvas and velcro to fix the canvas to the frame and modulate the tension of the fabric.
    [0044] At Villanova University (Pennsylvania), Emily Wroczynski applied a novel system to eliminate the deformations of the textile support in the oil painting The Presentation of David to King Saul After Slaying Goliath ( Triumph of David), made around 1630 and attributed to Prieto da Cortona, by using a plastic container as a humidification chamber that contained a previously wet felt inside; used rare earth magnets and a metal plate, protected with siliconized Mylar® and padded with Volara®, placed on the back of the canvas to attract the magnets and temporarily hold the dampening chamber (Wroczynsky, E. 2013 [en line; Query: 02-26-2018] Available at URL https://emilywrocsynskiconservationportfolio.format.com/gallery#39). Another similar example, but in this case applied to contemporary art, is found in the work Khurasan Gate variation II, by Frank Stella, made in 1970, where the artist used a piece of canvas mounted on a wooden frame with dimensions of 304 , 8 x 914.4 x 7.6 cm and a weight of 105 kg. Point deformations were treated with the canvas in a vertical position through the use of magnets as described by Jackie Dunn, in 2015 (Art Galery New South Wales (2015) [online; Consultation: 02-26-2019] Available at URL https: //www.artgallery.nsw.gov.au/blog/posts/a-stella-return).
    [0046] In general, to carry out conservation interventions on painted canvas supports, the conservator-restorer resorts to the use of the "Trecker" or, frequently, to his own ingenuity. It would be desirable to have simple tools to support the tissue consolidation of damaged pictorial supports.
    [0048] Explanation of the invention
    [0050] Auxiliary device for preservation processes on painted fabric supports.
    [0052] One aspect of this invention relates to an auxiliary device for conservation interventions in paint on canvas. Within conservation, this device is especially useful for some of the actions most frequently needed in frames: thread-by-thread suture, textile intarsia and reinforcement bridges.
    [0054] The device of the invention includes:
    [0055] - a frame consisting of four slats terminated at each end with a 45 ° cut,
    [0056] - a tension system to tension the threads used in the conservation of the fabric support that includes the following individually adjustable elements in each corner of the frame: - a metal pin,
    [0057] - a threaded or threaded rod,
    [0058] - two nuts,
    [0059] - two washers,
    [0060] - at least one cylinder for inserting one of the ends of the metal pin into the end of at least one of the frame slats that make up each corner of the frame,
    [0061] - two cylinders for the introduction of each of the ends of the threaded rod at the end of each of the two slats of the frame that make up each corner of it,
    [0062] - a magnetic system that includes:
    [0063] - a U-shaped gutter, made of ferromagnetic material adequately protected from corrosion, attached to each one of the outer edges and each of the inner edges of the four frame slats;
    [0064] - a set of magnets of adequate size to be inserted in the gutters that are attached to the edges of the frame slats.
    [0065] The ferromagnetic material gutters are selected with a U-shape and are attached to the inner and outer edges of each frame strip by the surface that represents the base of the letter U, so that the two arms of the letter will be parallel to the canvas to be treated.
    [0066] The metal stem, as well as the threaded rod, the washers and the nuts, are preferably made of stainless steel.
    [0067] The threaded rods and nuts are placed inside the thickness of each slat and each of its ends is housed in a metal cylinder. It should be noted that the rods are not fixed, so that each corner of the frame can be opened to the two sides determined by the two slats that make up each corner. To facilitate access and manipulation of the nuts, the inner edges of the slats can have a box-like cut at their corners.
    [0068] Each of the ends of the tenon present in each corner can be inserted into a metal cylinder placed in the thickness of each slat to facilitate the opening of the corners of the frame. Another option is that one of the ends of the spike is adhered to the material of the strip in which it is embedded and the other end can enter and exit the corresponding metal cylinder. In this way, when the frame is opened, the pins reinforce the corners preventing them from moving during opening. It should be noted that both the threaded rods and the pins are preferably placed at the same height as the thickness of the strip.
    [0069] The magnetic system, which comprises a ferromagnetic material channel attached to the inner edge and another ferromagnetic material channel attached to the outer edge of each slat and a set of magnets, acts as a clamp and allows to hold the selected weft and warp threads to proceed to the treatment according to the needs of the tear, gap or broken, in the original textile support.
    [0070] To do this, the gutters and magnets are selected so that the latter fit perfectly within the gap of the U of each gutter, which will allow to hold the threads between both elements, or, using pairs of magnets to hold each end of the the threads.
    [0071] Optionally, the interior gutters can include a groove along the arm of the U of the gutter that is located closer to the work, so that the threads can pass through it and thus locate them as close as possible to the canvas to be treated.
    [0073] The gutters can be joined to the edges of the slats using any joining element (screws, nails, glue, etc.). Another option is to join the gutters to the edges of the slats, especially those of the inner edges, by means of a set of magnets inserted in holes created in the inner and outer edges of the slats, so that the magnets are flush with the surface of the the edges to be able to place the metal gutter on them; in this way the gutter can be moved across the edge of the batten to bring the threads closer to the surface of the damaged canvas.
    [0075] The magnets can be of any type: ceramic or ferrites, alnico, rare earth, such as neodymium or samarium cobalt, or even combinations of magnets of different types can be used. Preferably, they are selected from neodymium.
    [0077] Low density materials are preferably selected to manufacture the frame slats, to avoid that the weight hinders their use. Thus, so-called soft woods can be used, with an apparent density between 0.350 and 0.550 g / cm2, or light metals, such as aluminum and its alloys, or rigid plastic materials, such as polytetrafluoroethylene PTFE, fluoride made of polyvinylidene PVDF and rigid PVC polovinyl chloride, or combinations of these materials.
    [0079] It is also possible to design auxiliary pieces for the frame slats, that is, to manufacture the frame slats in several fragments, fragments that can be joined temporarily by dowels, lengthening or shortening the length of the slats, according to the necessary dimensions. to intervene each work. In this way, it is possible to work with different formats, choosing the most suitable in each case.
    [0081] This invention arises in response to the need to find new options that offer the conservator-restorer less invasive solutions during the treatments of painted fabric supports than those commonly used by the conservator-restorer.
    [0082] The present invention presents several differences with respect to the methods disclosed in the state of the art. First of all, there is no evidence that the three operations that are facilitated with this device (thread-to-thread suture, textile intarsia and reinforcement bridges) have been carried out so far using a single support that holds, tightens and exactly locates the threads in the area to be intervened.
    [0084] Compared with other devices, the device of the invention has several advantages, such as: its rapid assembly and disassembly; It allows the application of a regulated and uniform tension on the new textile support to intervene in the work; the magnetic system contributes to an easy and fast handling of the threads; Finally, it should be noted that its design and dimensions can be used to work on time without having to disassemble the work from its original frame or having to mount artifacts on the frames of the works, as happens, for example, in the case of the «Trecker» cited in the state of the art.
    [0086] The device of the invention, with respect to thread-to-thread suture, offers great help by keeping the threads in constant tension and location during the adhesion process. The minimum applied tension avoids the subsequent placement of reinforcements, such as: patches, wire grids, reinforcement bridges, etc.
    [0087] In the case of textile intarsia, the present invention facilitates the operation since the threads prepared with the necessary weft and warp adapt perfectly to the gap, avoiding having to make templates and cut the pieces of fabric perfectly. As in the previous case, the constant location of the threads facilitates the process of adhering them. Until now, intarsia was applied without any tension, which is why it was essential to place a reinforcing element on the back of the fabric, but by means of the minimum tension applied with the device of the invention, this problem is solved.
    [0089] Regarding the placement of the reinforcement bridges in different tears or breaks, these reinforcement elements are often not enough, since the stress in the work is not homogeneous due to the damage generated. Depending on the behavior of the support, influenced by environmental factors, the stress will be more pronounced in some points of the damaged areas, which can cause new alterations. The application of a minimum tension by means of the device of the invention avoids, under different climatic fluctuations, that deformations occur, since it provides more resistance to the affected area.
    [0091] The invention, as a whole, is very easy and fast to install, manipulate and use, but the most important thing considering the criterion of minimal intervention is that this intervention process is re-treatable.
    [0093] Brief description of the drawings
    [0095] In order to understand the invention and its different applications in the field of conservation of paint on canvas, the following illustrations are incorporated:
    [0097] Figures 1 and 2
    [0098] Example of the telescopic system for the dowel (1): half of this is permanently adhered to the left bar (8), while the other half of it can enter and leave the right bar (8), where it is in turn You have inserted a metal cylinder (10).
    [0100] Figure 3
    [0101] Example of the placement of the interior gutters (6) and the exterior gutters (7) on the exterior and interior edges of the slats (8) of the frame and the placement of the box-like cuts (5) for the location of the nuts (3) of the tension system.
    [0103] Figure 4
    [0104] Example of fastening the inner channels (6) and the outer channels (7) to the respective inner and outer edges by means of screws (9).
    [0106] Figure 5
    [0107] Example of fastening the inner channels (6) and the outer channels (7) to the respective inner and outer edges by magnets S-12-03-N (16)
    [0109] Figures 6a and 6b
    [0110] Example of magnets (11) inserted in the outer channel (7) of a strip (8).
    [0112] Figure 7
    [0113] Example of the thread-by-thread suturing process. The threads (12) of the synthetic fabric, placed weft and warp according to the need of the suture, are held by magnets (11) placed in the inner channels (6) and in the outer channels (7) and tensioned by means of elements of the tension system: threaded rod (2), nuts (3) and washers (4), by means of the controlled opening of the frame corners.
    [0115] Figures 8a and 8b
    [0116] Example of the magnetic system that acts as a clamp. In this case, the synthetic threads (12) have been placed between two magnets (11)
    [0118] Figure 9
    [0119] Example of the assembly of a synthetic fabric (13) of the dimensions of a gap to be repaired, and of the threads (12), weft and warp. The synthetic fabric (13) is taut and ready to be adhered to the original support of the damaged work (14).
    [0121] Figure 10
    [0122] Example of the placement of the synthetic threads (12) by means of a slight tension, to effect the placement of the reinforcement bridges in a treatment of a rupture present in the work (14).
    [0124] Preferred embodiment of the invention
    [0126] The present invention is further illustrated by the following examples, which are not intended to be limiting of its scope.
    [0128] Example 1. Manufacture of an auxiliary device for preservation processes on painted cloth supports.
    [0129] A frame with dimensions of 25 x 25 x 2cm was made, consisting of four slats (8) of laminated fir wood, 10cm wide and 2cm thick. This species of wood has physical properties that give it great stability, since its apparent density at 12% humidity is 0.45 kg / m3; it has a volumetric contraction coefficient of 0.44% and a static flexural strength of 710 kg / cm2.
    [0131] The four slats (8) were cut at their ends at an angle of 45 ° in order to be able to join them together at the corners of the frame. A stainless steel spike (1) and a threaded rod (2) and 2 nuts (3) were placed in each joining area of every two slats (8) to regulate the tension of the elements that will be used for the conservation of canvases (Figures 1 and 2).
    [0133] On the four outer edges and on the four inner edges of the frame, iron gutters were placed, in a U-shape, protected with a special anti-corrosive oven paint (Titan Oxiron), applied in two coats, and subsequently, an anti-oxidant lacquer ( Satin Titanlak). The outer gutters (7), located on the outer edges, were chosen to be 25cm long, 1cm wide and 1.3 high, understanding the arm of the U by width and the bottom of the U by height; while the interior gutters (6) of the interior edges measured 11cm long, 1cm wide and 1.3cm high. The wall thickness of the gutter was 1mm and, therefore, the interior gap of both the exterior gutters (7) and the interior gutters (6) was 1.1cm wide (Figure 4). The gutters were fixed on their respective edges by means of two screws (9) each, placed one at each end of the gutter, and screwed to the edges of the slats (8) in such a way that the tip of the screw (9) is at the flush with the metal gutter (Figure 4)
    [0135] The device also included a series of magnets (11). In this example there were 32 Q-20-10-02-N magnets that, due to their dimensions (20 x 10 x 02mm), perfectly adapt to the gap of the gutters, acting as clamps, either only one magnet on the gutter or two magnets that fix the wires in between. (Figures 6a, 6b and 7).
    [0136] Example 2. Manufacturing alternatives for an auxiliary device for preservation processes on painted fabric supports.
    [0138] Example 2.1. A device similar to that described in Example 1 was manufactured, but with some differences. Rigid PVC (polyvinylchloride) was used for the construction of the frame. The four corners of the frame were cut at 45 ° and a tension mechanism composed of stainless steel pins (1) and threaded rod (2), nuts (3) and washers (4) was included. The threaded rods (2) and nuts (3) were placed inside the strip and housed inside a metal cylinder (10) with a diameter of 10mm and a depth of 4cm. It should be noted that the threaded rods (2) were not fixed inside the slats (8), so that they could open the corner of the frame towards both sides, that is, towards the two slats (8) on the inner edges they have a box-like cut (5) at the corners of the frame (Figure 3).
    [0140] On the other hand, a telescopic system was arranged for the pins (1) at the corners of the frame. In this case, a metal cylinder (10), with a diameter of 8mm and cm deep (Figures 1 and 2), was inserted in one of the two slats (8) at each corner of the frame in which the half is inserted. of the pin (1), while the other half of the pin (1) was permanently attached to the opposite strip (8) of the corner of the frame; the pin (1) can enter and leave the hole of the metal cylinder (10) as the mechanism is opened or closed by means of the threaded rods (2) and the nuts (3). In this way, when the frame is opened, the pin (1) reinforces the corners preventing them from moving during opening. It should be noted that the pins (1) are positioned at the same height as the thickness of the slats (8) as the threaded rods (2).
    [0142] Example 2.2. In this example, the inner gutters (6) were modified by making a slot (15) along the arm of the U of the gutter that is located closer to the canvas to be treated (Figures 5, 6b and 8b). Through said slot (15) the threads (12) can be placed so that they are perfectly superimposed on the surface of the work (14).
    [0144] Example 2.3. As a variant of these examples, the inner (6) and outer (7) gutters were fixed to the inner and outer edges of the slats (8) of the frame, respectively, by means of a set of magnets S-12-03-N ( 16). To fix these magnets, holes 0.3 cm deep and 12 millimeters in diameter, separated from each other by a distance of 6 cm, were made in the edges of the slats (8). The neodymium magnets S-12-03-N (16) were housed in the holes, which were fixed using extra strong Araldite® Standard epoxy resin, so that all of them were flush with the surface of the edge. Thus, the inner (6) and outer (7) gutters can move up and / or down on the surface of the inner edge of the slats (8), helping to reduce the distance between the wires (12) and the work. (14).
    [0146] Example 2.4. A resizable device was also manufactured. To do this, a frame was developed whose slats are made up of several fragments made of aluminum:
    [0147] - two 30cm slats made up of two 15cm fragments each joined together by spikes;
    [0148] - two 20cm slats made up of two 10cm fragments each joined by dowels; - four fragments of 15cm each, prepared to be joined by spikes to other fragments;
    [0149] - four fragments of 10cm each, prepared to be joined by spikes to other fragments.
    [0150] All the fragments of the strip were made 8cm wide and 2cm thick, and ferromagnetic material gutters were placed on both edges in all of them. In this way, when joining the different fragments to the slats, the interior gutters (6) and exterior gutters (7) were perfectly located along the edges of the slats (8). All the necessary dowels were also included to be able to join the different fragments of the slats.
    [0152] Example 3. Thread-to-thread suture
    [0153] When a painted fabric support shows tears or breaks, your intervention is necessary to ensure the stability of the support assembly.
    [0155] In this example, 24 Q-20-10-02-N magnets were used to suture a tear, placed in the respective iron channels, interior (6) and exterior (7) (Figure 7), of a device as described in example 2.3. To hold the wires (12), the magnets (11), with their respective poles (N and S), exerted the attraction action, and together with the ferromagnetic material channels acted as clamps (Figures 8a and 8b). The grooves (15) made in the interior gutters (6) were essential to achieve a correct placement of the threads (12) in the plane of the work (14).
    [0157] For the intervention, the natural linen Velázquez fabric was chosen, since it conformed more to the characteristics of the original support and, as an adhesive, the 10% starch paste and 20% sturgeon glue in water, applying with the help of a brush a small drop of the paste on each thread (12) to be sutured. Once the new threads (12) were aligned and placed - held by the magnetic system of the device - a tension of 1N / cm2 was applied and measured with a Tension Meter HT-6510N Guangzhou Landtek Instruments Co. Ltd. Then, it was applied a light pressure and heat with a micro-spatula and with the help of a digital microscope proceeded to weld the edges of each strand with the corresponding wire. After completing the thread-by-thread suture, the remaining threads were cut with a scalpel blade.
    [0159] The pressure force of the magnets (11) is essential since the traction force during the tensioning process depends on it: if magnets with low pressure force are used, a good result will not be achieved; if excessively strong magnets are selected, the fibers could be damaged.
    [0161] The results showed that the intervened area regained its dimensional stability, preventing the applied stucco putty from sinking. The device facilitated the suturing procedure by maintaining constant tension and correct location of the threads during their adhesion.
    [0162] Example 4. Textile intarsia
    [0163] To face the intervention of the textile intarsia, synthetic threads (12) were selected extracted from a Lipari polyester fabric , with a grammage of 260g / m2. A reconstruction of the textile support was made with a simple plain weave, adjusting it only to the gap and tightening the threads (12) using the Q-20-10-02-N magnets, arranged both on the inner edge and on the outer edge of the frame (Figure 9).
    [0165] The bonding of the fabric was carried out with the adhesive prepared with 10% starch paste and 20% sturgeon glue diluted in water, in a 1: 1 ratio. The application was carried out by dripping and, after that, the area was reviewed Treated with the mini-thermal spatula at a temperature of 38 ° C to fix the wires (12) to the support. The applied tension was 1N / cm2, providing the lagoon with a resistant surface and preventing the added textile support from sinking. In this way, it was possible to avoid the placement of reinforcement patches or having to resort to other more invasive systems.
    [0166] Example 5: Reinforcement bridges
    [0167] A device like the one described in example 1 was used. To carry out the reinforcement bridges, threads (12) were applied, extracted from a polyester fabric, Lipari, with a weight 260g / m2, previously impregnated with an acrylic resin, Plextol® B500 and once placed on the surface to be treated, covered with the thermal micro-spatula to reactivate the adhesive. By means of the device of example 1, various tensions ranging between 1 and 3N were experimented, as well as with threads to which no tension was applied, with the aim of verifying and contrasting the effectiveness of the new method carried out with the device of the invention.
    [0169] Regarding the test carried out with tensioned and untensioned yarns, a great difference was observed under the relative humidity oscillations. The tension-free threads did not perform well in terms of suturing the tear, as they underwent deformation to yield, forming an inverted V. However, the threads (12) with tension, specifically 1-1.5N, did provide the intervened area with sufficient resistance so that no deformations occurred at the suture point (Figure 10).
    权利要求:
    Claims (8)
    [1]
    1. Auxiliary device for conservation processes on painted cloth supports that includes. - a frame formed by four slats (8) finished at each end with a 45 ° cut, - a tension system to tension the threads (12) used in the preservation of the fabric support that includes the following individually adjustable elements in each frame corner:
    - a metal pin (1),
    - a threaded (2) or threaded rod,
    - two nuts (3),
    - two washers (4),
    - at least one cylinder (10) for the introduction of one of the ends of the threaded rod (2) at the end of each of the two slats (8) of the frame that make up each corner thereof,
    - a magnetic system that includes:
    - A U-shaped gutter, made of ferromagnetic material adequately protected from corrosion, attached to each of the outer edges and to each of the inner edges of the four slats (8) of the frame by the surface that represents the base of the U of the gutter;
    - A set of magnets (11) of adequate size to be inserted in the gutters that are attached to the edges of the slats (8) of the frame.
    [2]
    Device according to claim 1, in which the pin (1), the threaded rod (2), the nuts (3), the washers (4) and the metal cylinders (10) are made of stainless steel.
    [3]
    Device according to any of the preceding claims, in which one of the ends of the pin (1) is adhered to the portion of the slat (8) in which it is embedded.
    [4]
    Device according to the preceding claims, in which the inner channels (6) include a groove (15) along the arm of the U that is closest to the painted fabric support.
    [5]
    Device according to any of the preceding claims, in which the inner channels (6) and / or the outer channels (7) are joined to the edges of the slats (8) by means of a set of magnets inserted in a set of holes made on the inner edge and / or on the outer edge of each of the slats (8) that make up the frame, said magnets being flush with the surface of the edge.
    [6]
    Device according to any of the preceding claims, in which the magnets (11) are selected from the group consisting of: ceramics or ferrites, alnico, rare earths (neodymium or samarium cobalt) or combinations thereof.
    [7]
    Device according to any of the preceding claims, in which the slats (8) of the frame are made of woods with an apparent density between 0.350 and 0.550 g / cm2, aluminum, aluminum alloys, rigid plastic materials and / or combinations of the themselves.
    [8]
    Device according to any of the preceding claims, the slats of which are formed by at least two fragments joined by pins and which can be separated to admit the addition of one or more fragments.
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    同族专利:
    公开号 | 公开日
    ES2782399B2|2021-02-25|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4156399A|1977-12-02|1979-05-29|Fieux Robert E|Apparatus for restoring paintings, documents and the like|
    FR2657561A1|1990-01-30|1991-08-02|Ferrer Christian|Extensible frame designed to receive a canvas or any other material in a sheet form, providing a controllable tension therefor|
    FR2729102A1|1995-01-09|1996-07-12|Gueytron Jean Claude Rolland|Joint construction for artist's tensioned painting canvas|
    FR2809989A1|2000-06-08|2001-12-14|Mathy Eliane Cugno|Frame for painting canvas has triangular tongues to hold corners of frame rigid and tension canvas|
    ITBZ20050030A1|2005-06-16|2006-12-17|Luigi Rella|SHEETS IN GALVANIZED IRON AND MAGNETS AND THEIR USE FOR THE RESTORATION OF WORKS OF ART|
    法律状态:
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    申请号 | 申请日 | 专利标题
    ES201900038A|ES2782399B2|2019-03-13|2019-03-13|Auxiliary device for preservation processes on painted fabric supports|ES201900038A| ES2782399B2|2019-03-13|2019-03-13|Auxiliary device for preservation processes on painted fabric supports|
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