Home › Cements › Inks (Whilst wet and may easily be)

Inks (Whilst wet and may easily be)

whilst wet, and may easily be rubbed off. The | acid; then take 4 oz. of oyster-shells calcined to acid chiefly employed is the muriatic; but both the sulphuric and nitric succeed very well. They should be so far diluted as not to be liable to corrode the parchment, after which the degree of strength does not seem to be a matter of much nicety.

2. Morid's Process. - The paper or parchment written on is first left for some time in contact with distilled water. It is then placed for 5 seconds in a solution of oxalic acid (1 of acid to 100 of water); next, after washing it, it is put in a vessel whiteness, and carefully freed from their brown crust; put them into the vinegar, shake the mix. ture frequently for 24 hours, then let it stand till it deposits its sediment; filter the clear part through unsized paper into a glass vessel; then add 2 oz. of the best Aleppo galls bruised, and place the liquor in a warm place; shake it fe quently for 24 hours, then filter the liquor again through unsized paper, and add to it after filtration, 1 qt., ale measure, of pure water. It must then stand 24 hours, and be filtered again, if it containing a solution of gallic acid (10 grs. of acid | shows a disposition to deposit any sediment, which to 300 of distilled water); and finally washed again and dried. The process should be carried forward with care and promptness, that any accidental discoloration of the paper may be avoided. To take Impressions from Recent Manuscripts.

This is done by means of fusible metal. In order to show the application of it, paste a piece of paper on the bottom of a China saucer, and allow it to dry; then write upon it with a common writing ink, and sprinkle some finely powdered gum Arabic over the writing, which produces a slight relief. When it is well dried, and the adhering powder brushed off, the fusible metal is poured into the saucer, and is cooled rapidly, to prevent crystallization. The metal then takes a cast of the writing, and, when it is immersed in slightly warm water to remove adhering gum, impressions may be taken from it as from a copper-plate. Another Method.

Put a little sugar into a common writing ink, and let the writing be executed with this upon common paper, sized as usual. When a copy is required, let unsized paper be taken and lightly moistened with a sponge . Then apply the wet paper to the writing, and passing lightly a flat-iron, of a moderate heat, such as is used by laundresses, over the unsized paper, the copy will be immediately produced. This method requires no machine or preparation, and may be employed in any situation.

To Produce a Fac-simile of any Writing.

The pen should be made of glass enamel; the point being small and finely polished; so that the part above the point may be large enough to hold as much ink as, or more than a common writingpen.

A mixture of equal parts of Frankfort black, and fresh butter, is now to be smeared over sheets of paper, and rubbed off after a certain time. The paper, thus smeared, is to be pressed for some hours, taking care to have sheets of blottingpaper between each of the sheets of black paper. When fit for use, writing-paper is put between sheets of blackened paper, and the upper sheet is to be written on, with common writing-ink, by the glass or enamel pen. By this method, not only the copy is obtained on which the pen writes, but also two or more, made by means of the blackened paper.

Substitute for Copying Machines.

In the common ink used, dissolve lump sugar (1 dr. to 1 oz. of ink). Moisten the copying paper, and then put it in soft cappaper to absorb the superfluous moisture. Put the moistened paper on the writing, place both between some soft paper, and either put the whole in the folds of a carpet, or roll upon a ruler 3 or 4 times.

To Copy Writings. it generally does. When paper has been wet with this liquid, put it between 2 thick unsized papers to absorb the superfluous moisture; then lay it over the writing to be copied, and put a piece of clean writing-paper above it. Put the whole on the board of a rolling-press, and press them through the rolls, as is done in printing copperplates, and a copy of the writing will appear on both sides of the thin moistened paper; on one other side in the natural order and direction of side in a reversed order and direction, but on the the lines.