Process and Compound for Welding Cast Steel or Wrought Steel in Bars, without Heating to a White Heat, with Steel or Iron, and for Regenerating the Welded Steel.
Year: 1885

page_text: Process and Compound for Welding Cast Steel or Wrought
Steel in Bars, without Heating to a White Heat, with Steel
or Iron, and for Regenerating the Welded Steel.
I, KARL KUPFER, of Berne, in Switzerland, Machinist, do hereby declare the
nature of this Invention, to be as follows:-
⋅
My Invention relates to a process and compound for welding cast steel or
wrought steel in bars, without heating to a white heat with steel or iron, and for
afterwards regenerating the piece of steel welded.
This process consists in the use of a compound or composition, in the form of
powder, after the pieces of steel to be welded together have been fired at a red heat.
This compound is composed of 25 parts, Borax rafia, in small pieces about the
size of peas, 25 parts fine steel filings, and 7 parts sal ammoniac, in powder,
chemically pure. After having moistened this mixture by means of 12 parts
Balsam Copei, first quality, it is cooked slowly in an iron pan until the whole forms
a solid body. This body, when cool; is pulverized and kept in a dry place.
When the pieces to be welded are cleaned and powdered with this compound
they are again placed in the fire and heated slowly to a red heat, they are then
forged by lightly hammering them. They are then again heated and forged a.
second time. ·
To then regenerate the pieces of steel welded by the process just described, I use
a powder composed of the following ingredients, viz:
50 parts Borax rafia.
40
15
10
6
10
"
is
"
"
"
yellow prussiate of potash.
first quality colophony.
sal ammoniac, chemically pure.
dragon's blood, and
common salt, very dry, every ingredient being well pulverized and the
whole mixed cold.
The welded parts are again heated, removed from the furnace, and then powdered
with this mixture. By repeating this operation two or three times the steel
regains its primitive grain.
3

page_text: Black Dars,
or Iron, and for Regenerating the Welded Steel.
I, KARL KÜPFER of Baden in the Republic of Switzerland Mechanic, do hereby
declare the nature of this invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:
This process consists in the use of a compound or composition in the form of
powder, after the pieces of steel to be welded together, have been fired at a red heat.
This compound is composed of 25 parts Borax rafia, in small pieces about the
size of peas; 25 parts fine steel filings and 7 parts sal-ammoniac in powder,
chemically pure.
After having moistened this mixture by means of 12 parts Balsam copaiba first
quality, it is cooked slowly in an iron pan until the whole forms a solid body.
This body, when cool, is pulverized and kept in a dry place.
When the pieces to be welded are cleaned, and powdered with this compound,
they are again placed in the fire and heated slowly to a red heat, they are then
forged by lightly hammering them. They are then again heated and forged a
sectond time.
To then regenerate the pieces of steel, welded by the process just described,
I use a powder composed of the following ingredients, viz;
50 parts Borax rafia, 40 parts yellow prussiate of potash, 15 parts first quality
colaphony, 10 parts sal-ammoniac, chemically pure, 6 parts dragon's blood and
10 parts common salt, very dry, every ingredient being well pulverized and the
whole mixed cold.
The welded parts are again heated, removed from the furnace and then
powdered with this mixture. By repeating this operation 2 or 3 times, the steel
regains its primitive grain.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what
I claim, is;-
The process & compound or composition for welding cast steel or wrought steel
in bars, without, heating to a white heat, with steel or iron & regenerating the
welded steel, as set forth.