New procedure for the tempering or tensioning of articles manufactured in glass, crystal or crystalline (Machine-translation by Google Translate, not legally binding)

摘要

A new process for tempering or tensioning articles made of glass or crystalline glass essentially characterized by the fact that the piece made of glass or crystalline glass is not stressed or tempered if it is colored or decorated as it is not obtained in any known process such as pressed or injected blowing and is subjected to the action of an energetic wash of its internal walls and externase in order to eliminate from them any impurities then introduced in a muffle at a temperature comprised between 35ºc. And 800º c. During a period comprised between 15 minutes and 60 minutes with variable temperature and time depending on the material constituted of the piece already formed to treat its thickness and/or decoration, taking care to avoid that the constituent material of the piece is overheated or passed or adopt the characteristic known to be burnt reached the optimal point of exposure and temperature of the piece introduced in the muflacaquella withdrawn from it and completely submerged in a bath composed of 60% or 90% of vegetable oil as the oil of orujomezclado with 10% a 40% of animal fat such as horse fat, this bath being maintained at a temperature between 50ºC and 325ºC depending on whether the vegetable oils and animal fats are used, the quality of the glass or crystal, whether or not colored and/or decorated, as is the procedure for blown or injected that has been followed for the manufacture of the anti- it is to be treated for its tensioned or tempered pieces once they are removed from the bath and drained, they are sprinkled and scrubbed with sawdust for their drying, proceeding to the final washing phase of said pieces with soapy or basic solution. (Machine-translation by Google Translate, not legally binding)