Method for manufacturing fine art brushes with handles made of bamboo material and a tuft of bristles
The process of cutting, flattening, and compressing bamboo to form handles, combined with a reservation machining at the handle's foot, allows for bamboo fine arts brushes of diverse shapes and sizes, addressing the issue of ferrule dependency and ensuring structural integrity.
Patent Information
- Application Number
- FR2023001467
- Authority / Receiving Office
- FR · FR
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2023-02-16
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2033-02-16
AI Technical Summary
Existing fine arts brushes rely on ferrules or metal links to attach bristles, leading to hair loss and making it impossible to use bamboo handles due to their hollow nature and variability, hindering standardization and repeatability in industrial manufacturing.
A process involving vertical cutting and arching of bamboo into quarters, followed by flattening and compressing to form battens, then machining into handles, and incorporating a reservation machining at the handle's foot to secure the bristles without a ferrule, ensuring the bamboo's mechanical strength supports the bristles.
Enables the production of fine arts brushes with bamboo handles of various shapes and sizes, eliminating the need for ferrules and ensuring the bamboo can withstand bristle swelling without cracking.
Smart Images
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Abstract
Description
Title of the invention: Method for manufacturing a fine arts brush with a handle made of bamboo material and a tuft of bristles
[0001] The invention relates to a method for manufacturing fine arts brushes with a handle made of bamboo material, and receiving a tuft of bristles, freeing itself from the systems for attaching said tufts by usual means such as ferrules or other metal links, whatever the diameters and shapes of brushes.
[0002] State of knowledge: characterized by the history of the brush since its origins, on the one hand; and the use of the bamboo material in its various applications.
[0003] Relating to the fine arts brush itself: It is appropriate to recall the state of known technologies relating to fine arts brushes equipped with tufts of natural or synthetic hair through their appearances throughout history.
[0004] The Chinese, masters of calligraphy, refer to the brush as a hairy pencil! In the West, it distinguished itself during the Middle Ages from the ink pen, the graphite and the bird's quill to become the preferred tool of painters. The word, derived from the Latin penicillus, "little tail", appeared in the 15th century, at the same time as the supremacy of oil painting was asserted in the wake of the Flemish primitives. An extension of the master's hand, it must translate the tiniest vibrations as well as the largest flights and adapt to all types of pigments, which explains, from the beginning, a very wide variety of shapes, lengths and types of hair to obtain a tuft conforming to the required gesture.
[0005] The handle is then made of tapered wood and the ferrule, enclosing the hairs with a linen thread, is cylindrical and made with a natural material such as goose-paste tendons. This technology is still in use, particularly for watercolor brushes, now produced industrially, for which the goose-paste material that served as a ferrule is now replaced by a plastic cylinder.
[0006] In the 19th century, the first flat brushes with a metal ferrule modeled under a press appeared. The principle of the metal ferrule then developed on most brushes in the fine arts sector, and whatever the shape of the brush (cylindrical or flat), until it represented the main part of world production for many decades.
[0007] So that for the fine arts sector, and as these two technologies indicate, there was no brush before the present invention that could do without a ferrule, whether natural or metallic. The reason for this situation is that the ferrule, not content with making the connection between the handle and the tuft, also encloses the sole of the latter to prevent it from losing hairs, this loss being a source of dilapidated.
[0008] It should also be remembered, although this is outside the scope of the present invention, that the brushes and paintbrushes used in the cosmetics field are not all provided with ferrules. Indeed, due to their very different functions, they use various materials and shapes both to constitute the handle and the tufts.
[0009] As regards bamboo: it is a natural material renowned for its strength and which is used in various sectors of activity due to its mechanical qualities. With regard to the use of an industrially manufactured brush, it is appropriate that according to the varied dimensions of the brushes in: shapes, diameters and lengths, a requirement of repeatability of the shape is observed in order to ensure the standardization of the products. According to this requirement, the use of bamboo in its natural state cannot be considered. Furthermore, since bamboo is hollow from the inside, this constitutes an additional constraint preventing reliable repeatability of industrial manufacturing.
[0010] In a different order, and for the same reasons of repeatability, it is also impossible to think of splitting bamboos in their length, to then machine them to the required shape and dimension.
[0011] Consequently, if bamboo has undeniable mechanical qualities, it was illusory to introduce this material into the production of brush handles.
[0012] It is for the purpose of satisfying the manufacture of fine art brushes in bamboo, in all the required shapes (round, flat, and any other shapes) and dimensions, as well as to free oneself from the presence of ferrules, that the present invention is intended.
[0013] Presentation of the invention: The invention relates to a method of manufacturing a fine arts brush with a handle made of bamboo material, and receiving a tuft of bristles, freeing itself from the systems of attaching said tufts by usual means such as ferrules or other metal links, whatever the diameters and shapes of brushes.
[0014] The invention is characterized by:
[0015] - a particular process for preparing bamboo (a) and manufacturing the handle of the brush, consisting of a vertical cut ([Fig.l]) of the bamboo into quarters along its entire length, each of the quarters then being arched and flattened ([Fig.2]) to obtain cleats (a') which are polished. But the thickness of the bamboo being too thin, this does not allow the brush handles to be machined directly. This is why the cleats (a') are then agglutinated and compressed ([Fig.3]) to obtain a board (a”) whose thickness corresponds at least to the mass of bamboo necessary for machining the brush. These boards (a”) of reconstituted bamboo are then machined on the periphery to obtain the handles (b) with the desired shapes and dimensions ( [Fig.4]),
[0016] - another method aimed at freeing oneself from the presence of the ferrule, in that the machined handle (b) in its periphery receives at its foot (c) a reservation machining (c') to the shape and size of the foot of the tuft (d) to be inserted, the tuft is then introduced by a double process of positioning in force and gluing.
[0017] Thus, and due to the solidity of the bamboo material which allows it to withstand the load transfers at the periphery (e) of the inserted tuft ([Fig.5]), the load transfer being amplified once the tuft has received liquid components and has swollen, it is possible to free oneself from the presence of a ferrule without forming cracks in the handle at the place where the pressures are exposed.
[0018] By this manufacturing process, it is thus possible to manufacture fine art brushes from bamboo of all shapes and sizes, while freeing oneself from the presence of a ferrule. Brief description of the drawings
[0019] [Fig.l] Vertically cut bamboo
[0020] [Fig.2] Arched and flattened bamboo sections
[0021] [Fig.3] Bamboo slats clumped together and compressed
[0022] [Fig.4] Formed sleeves
[0023] [Fig.5] Handle with the tuft inserted
[0024] Glossary: 1. bamboo 2. a') cleat 3. a”) board 4. formed handle 5. foot of the handle 6. c) reservation machining 7. foot of the tuft 8. load recovery of the handle at the periphery of the tuft
Claims
Claims
1. Method of manufacturing a fine arts brush with a handle made of bamboo material, and receiving a tuft of bristles, characterized by: - a particular process for preparing the bamboo (a) and manufacturing the brush handle, consisting of vertically cutting the bamboo into quarters along its entire length, each of the quarters then being arched and flattened to obtain strips (a') which are polished, then subsequently agglutinated and compressed to obtain a board (a”) whose thickness corresponds at least to the mass of bamboo necessary for machining the brush; finally these boards (a”) of reconstituted bamboo are then machined on the periphery to obtain the handles (b) with the desired shapes and dimensions, - another process aimed at freeing itself from the presence of the ferrule, in that the machined handle (b) in its periphery receives at its foot (c) a reservation machining (c') in the shape and size of the foot of the tuft (d) to be inserted, the tuft is then introduced by a double process of positioning in force and gluing.