DE246120C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

- JVl 246120 - CLASS 22g ·. GROUP

Coloring, drawing or writing pen. Patented in the German Empire on October 15, 1911.

The endeavor to fix the pastel dust on the picture surface without reducing the surface light and thus the beauty of the pastel destroy, goes back to the creation of the pastel pencil itself. What the pastel color theoretically make them the most durable color by their lack of any tarnishing bond had to, given her great sensitivity to shock or blurring, So against mechanical influences at all,. to destruction. The chalk contained in large quantities in the pastel pencils is but so sensitive to any binding agent that when it is subsequently fixed, the forfeits the soft beauty of the tone.

The present invention is now based on the experience and experimentation over the Bössenroth egg tempera. In order to remove any trace of superfluous binding and fat content from the colored pencils, the pure egg yolks decreased. The colored powders are mixed with pure egg yolk or similar, bound by suitable tanning agents hardenable substances. To the one from this crowd to be shaped pens, plates or any other shaped bodies even greater resistance add a little gelatine to this mass, similarly acting glue substances, Rubber or artificial products analogous to them were added.

Both binding agents are so with water or with very dilute salt solutions heavily diluted, so that in the dried ready-to-use pencil the whole soft pastel character is preserved. The bond ratio depends on the nature of the one in question individual pigments.

In order to fix the drawings made with such pastel masses, one dampens the paint application with strongly diluted formalin (formaldehyde), its homologues or with alum, also with water glass solutions, to which heavily diluted tragacanth mucus is added. The fixing liquids penetrate the paint layer, around the protein bodies (both those of the egg yolk and the protein bodies of the glue substances) temporarily loosen and then gradually become quite insoluble and resistant to to make atmospheric influences. With this the color layer is completely fixed, without the velvety soft pastel structure and the surface light peculiar to the pastel color in the slightest to have forfeited.

With ordinary patellar pencils it is impossible to use a brush and water to contract the individual color corpuscles in a glaze-like manner to accomplish a unifying tone. The chalk z. B. gets dirty and sandy and all that goes with it Pigment loses all luminosity. According to the present invention, chalk is excluded. Acts as a brightening base pure zinc white and sulfopon (absolutely lightfast lithopon) or other lightfast strong opaque white color bodies. These white pigments retain their strong refractive power under all circumstances

Claims (1)

their hiding power and the luminosity generated with the colored pigment contribute undiminished. You can do this with water and a brush Contract paint application and get beautiful clear tones. One uses the same instead Water fixative mentioned above, a painting of indestructible strength is obtained. The character when treated wet is tempera-gouache-like. Even the unfixed one ίο tight lines with the soft colored pencils already has such a great ability to adhere,.: that strong moistening will smear the • fails to manage the paint job. The external appearance is that of the usual Pastel pencils. Each pigment is pure in the first pencil with no waste and in the second and third, each with a shade of lightening. Only those from more competent side than normal colors referred to pigments. The application of the colored pencils In addition to the character of the pure pastel, it is also an extremely rich one. she allows Combinations on every painting surface with all available techniques, such as oil paint, Tempera, casein, fresco (as mold cannot form), watercolor and gouache, and not just as background painting, d. H. Preparation of the work, but it allows the most important thing, the final touch for works of art of any technique. The oil painting z. B. only needs to be superficially dry to be simplified to a calm overall tone either by the new colored pencils to become or, in the opposite sense, to increase its splendor of colors. The final varnish to be applied later connects these last paint application firmly and steadily with the oil or tempera paint layer. Due to the extraordinarily high resistance to mechanical influences, Against water etc. the new pens are also ideally suited as replacement bodies for Special-purpose writing or drawing chalk (for plaster of paris, etc.). Is it about on walls or surfaces, e.g. B. on houses or railroad cars for a long time if possible to attach durable labels (transport notes or contents), so it is precisely here that the pens produced using the new process will prove to be the same as before products used prove to be far superior. You can also add them to fat make it suitable for writing and drawing on glass or other smooth surfaces. You can optionally with the addition of suitable fats or from the color masses fats, oils and any perfumes, including powders or pastes, that result in Due to their great adhesion and great covering power, they are ideally suited for make-up. Pastel pencils are already known that use only zinc white as a lightening agent contain. However, these either have one that is completely inadequate for practical use Strength or insufficient softness. Only through the use of egg yolk, which was initially added to the pens Zinc white gives hold and later serves as a fixative for drawing or painting and other pastel pencils containing high opacity pigments are of practical importance. Embodiment. I. Manufacture of coloring, drawing or writing pens. . Binder: a) 10 g white gelatin, warm dissolved in 300 g of water with the addition of 0.04 percent chemically pure table salt, b) ι egg yolk (30 g) to 20 g of water. 400 g of zinc white, to which colored pigments can be added, are 20 to 30 g of binder a and with 25 to 30 g of binder b with the addition of water for Trowel-tight mass on the grinder in the known manner and finely grated at the end brought to an over-soft consistency by water. This soft mass then becomes too Bars shaped and dried. II. Manufacture of the fixative. 10 g of tragacanth powder are used in 500 to 600 g Dissolved water, and 20 g of commercial formalin are added to this solution. Pa τ ent claim: Coloring, drawing or writing pens, which in addition to the usual colored pigments as Whitening agent zinc white, sulfopon (lightfast lithopon) or similar, strong Contain opaque white body paints, characterized in that they act as binders, possibly in addition to small amounts the adhesives otherwise used in the manufacture of pastel pencils, Contain egg yolk or equivalent substances that have become insoluble due to tanning agents.