DE27087C - Process for the production of a marble or jasper-like glass by treating a black carbon glass with silver or copper preparations - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

CLASS 32: glass,

Patented in the German Empire on August 29, 1883 .

For the purpose of making this decoration of black glass, the inventors melt:

100 parts of sand,

3 - Glauber's salt,

4 - iron oxide (caput mortuum),
12 - graphite (or charcoal),
36 - soda,

, 12 - lime,
12 - Potash.

The glass thus melted gives a so-called black carbon glass, which is again attached to the Working out is treated as follows.

The glassmaker takes a small piece of the pipe, shapes it into a small oval until it has solidified enough so that it can again take up a little glass mass with which it is does the same manipulation. This process . he repeats three to five times, whereby the glass assumes a gray-green core and such rings.

The glass treated in this way on the pipe can now be hollow or solid, hollow or Prefsglas, can be processed into rods, stalks and so on. Let out of this raw glass Now make buttons, beads, and all other quincaillery items again, like this happens with other raw glass.

All of these things can, in order to be capable of decoration, either simply pressed or be ground and polished, both in the fire and on the disc.

The following are used to decorate this glass:

ι. ι part sulfur silver and 5 parts iron ocher, which mainly brings out the emergence of the dark green fibers.

2nd part silver and 5 to 10 parts Manganese oxide (brownstone); this mass causes a prominence of dark and light brown Flasers. In place of the sulfur silver one can use chlorine silver everywhere, but it is the same less extensively.

3. Part of carbonate of copper oxide and 1 bis 3 parts iron ocher, which causes a light to dark red-brown color. Iron ocher, manganese oxide and clay can always replace one another, since the same primarily only for this purpose are determined, the silver respectively. to bring the copper oxide into a suitable connection, and because these auxiliary preparations are not so independent in producing the color tones Have character that their effect cannot be achieved by using another material could be. More or less application of the preparations changes the color tones to the most intense cobalt blue.

Preparations 1., 2. and 3. can be mixed with each other in different proportions, and the character of those who are in excess in relation to weight prevails are located. One of these preparations can also be applied to the other and both in

one fire than in ^ several upon one another following fires.

The decoration is done in such a way that the preparation is rubbed with water with a brush or otherwise applied to the particular glass, then the latter a light red glow exposed and washed off after cooling.

The manipulation is similar to the yellow and red etching of the table glasses, and it is not a melting of the decoration means, but the purpose of the latter is to red heat with the excess iron oxide and graphite contained in the glass (Charcoal) to combine chemically and thus the differently colored and shaped Zeiclv evoke voltages. .

What is new about this invention is the creation of something similar to marble and jasper Structure of the glass caused by the treatment of an oversaturated black carbon glass with silver and copper preparations.

Claims (1)

Patent claim: The manufacture of decorations on black glass made of 100 parts sand, 3 parts Glauber's salt, 4 parts iron, 12 parts graphite, 36 parts soda, 12 parts lime, 12 parts potash, by using mixtures which consist either of:
ι. Part of chemically pure silver sulfur or silver chloride with 4 to 12 parts of iron ocher, alumina or manganese oxide; or from: 2nd part carbonate of copper oxide with 1 to 3 parts of iron ocher, alumina or manganese oxide.