Method for the manufacture of objects of glass or crystal

Glass manufacturing – Processes – With coating

Patent

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Details

65 605, 65 72, C03B 700, C03B 914, C03B 916, C03C 1700

Patent

active

059836741

DESCRIPTION:

BRIEF SUMMARY
The present invention relates to a method for the application of coloured or uncoloured decorations of transparent, opaque or opal glass or crystal glass to pressed casted, injection moulded, blown or moulded objects of glass or crystal glass objects. The invention also relates to an arrangement for producing objects decorated in such a way by the use of the method.
The manufacture of multi coloured or differently coloured objects of glass, preferably objects of art glass in larger series, is presently in principle not possible with available methods. The reason is that by tradition such objects have been produced as a purely manual work and that methods for rationalization have have been missing as well as not developed. Consequently, when the glass objects should be provided with coloured decorations, they were decorated either by painting or by the production of a paintable raw material, or by applying the glass decorations manually in connection with the production of the raw material while this still had a high temperature. Both these methods require the mobilization of extensive resources as well as strain. In the first case the painted decoration must be subjected to a second burning in order to harden the glass and in the second case an extensive workmanship as well as artistic ability is required in order to achieve the results intended.
The main object of the invention is consequently to accomplish a method of the above mentioned kind, which enables the production of art or utility glass goods with one, two or several colours, the goods per se being produced by conventional methods, such as pressing injection moulding blowing, or molding, separately or in combination.
Another object of the invention is to accomplish an arrangement for creating a possibility to produce--by means of said method--single or multicoloured finished articles or semimanufactured articles industrially, which in a later phase can be finished off and/or decorated with conventional methods by machine or manually, such as by grinding, blasting, painting or applying of additional decorations of glass of all possible kinds.
Without going into detail it should be mentioned that by using the hereby described method and arrangement for its realization, it becomes possible to produce art glass on a large scale which earlier has been possible only manually. For obvious reasons this leads to an essential rationalization of the production as well as a big cost advantage.
In the following the invention will be described more in detail with reference to the accompanying drawings showing embodiments which are not delimiting to the invention, where:
FIG. 1 shows a view of a principal arrangement for preparation of a glass decoration on a cup or a wine glass manufactured by moulding,
FIG. 2 shows the design of a glass cup for a wine glass according to FIG. 1 in order to make the decoration possible,
FIG. 2a shows a massive metallic insert which can be used in order to avoid penetration of the decoration goods,
FIG. 3 shows the glass cup according to FIG. 2 being provided with an appropriate foot,
FIG. 4 shows a glass cup analogous to the cup according to FIG. 2 with the decoration differently made,
FIG. 5 is a schematic view showing a rig for applying a positive decoration (i.e. on the outside of a smooth surface) to the outside of a glass object produced by blowing,
FIGS. 6a and 6b show an arrangement and means for making a timely correct operation sequence possible when applying the method according to the invention,
FIG. 7a shows a rotationally symmetrical body with a geometrically dependent decoration which has been prepared by use of the method according to the invention, and
FIG. 7b shows a view from VIIb VIIb in FIG. 7a.
FIG. 1 shows the principle how to manufacture a glass cup 1 by pressing, in order to create a glass for e.g. beverages, and how a glass cup or a starting material 1 by injection according to the invention in this case is given a helical decoration D of additional glass material, which sticks to a channel 4, which in

REFERENCES:
patent: 114140 (1871-04-01), Hobbs et al.
patent: 762925 (1904-06-01), Mygatt
patent: 3034871 (1962-05-01), Stewart
patent: 4288238 (1981-09-01), Klepsch

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