US1210968A - Process of tanning fur skins. - Google Patents

Description

ROBERT NASSE, OF ST. PAUL, MINNESOTA, ASSIGNOR OF ONE-HALF 130 AUGUST PROHOFSKY, OF ST. PAUL, MINNESOTA.

.rnoenss No Drawing.

To all whom it may concern Be it known that I, Bonner NASSE, a citizen of the United States, residing at St. Paul, in the-county of Ramsey and State of Minnesota, have invented a new and useful Improvement for a New Process in Tanning Fur Skins, of which the following is. a specification. I v

This invention relates to the process of tanning fur skins, by means of a tanning solution composed of aluminum potassium sulfate, sodium chlorid, sodium borate, and

water, and a solution composed of wheat flour, brewers yeast, alcohol, and water, and has for its object to make the'process more expeditious and givea skin which is softer and more full oflife when tanned. l

Heretofore in tanning fur skins with a solution of aluminum potassium sulfate, sodium chlorid, etc., the skin needed considerable working with oil and other fat elixers to soften them after the tanning process, and even then, they would not always be soft and pliable. With the old process of tanning, the skins seemed to deteriorate rapidly after being tanned, while with my process, the skins remain the same and seem to retain the life and softness.

In my process of tanning I use a solution made up of ingredients in the proportions approximately as follows: aluminum potass1um sulfate 1 00 pounds, sodium chlorid' 80 pounds, sodium borate 3 pounds and 25 gallons of water. I then make up a second solution of ingredients and pro ortions approximately as follows: wheat Sour, 100 pounds, brewers? yeast 1 pound, alcohol one qplnt and adding water to make 28 gallons.- he solution of wheat-flour, yeast, alcohol and water isdeft to ferment about two days before usm F r convenience I term the first solution of aluminum potassium sulfate, sodium chlorid and water, the mineral tanning solution, and the second solution composed of wheat flour, yeast, alcohol and water. the organic solution.

In the rocess of tanning, I take about 8 gallons 0 the mineral tanning solution and add suflicient water to make a ten per cent.

solution, to which I add i gallons'of the organic solution and about 10 pounds of bran, then applying this solution on the flesh side of the skins and place them flesh Specification of Letters Patent.

'leaving the fiber looser and allowing more perfect action of. the tanning liquor. It be- I ing an undoubted fact that the bacteria in the fermented "solution feed upon thehide substance.

By my improved process, the skins are very much finer in quality and the length of time for finishing the same is materially reduced, suchas in the saving of working the skins to soften them after they have been tanned. I,

If it is desired to have a thin leather on the skins, I treat the same with a solution of mild white soap and water which is boiled together and left to stand for some time before using. This soap solution is applied warm with any good fur oil and the skins placed flesh to flesh after this solution has been applied and left for several hours.

Having described my invention, what I claim is:

1. The process of tanning fur skins consisting in treating the skins with a solution of aluminum potassium sulfate, sodium chlorid, sodium borate and water, mixed with a solution of wheat flour, brewers yeast, alcohol and water, in about the proportions specified.

2. The process of tanning fur skins consisting in treating the skins with a solution of aluminum potassium sulfate, sodium chlorid, sodium borate andwater, mixed with'a fermented organic solution of the ingredients named in about the proportions specified. I I s 3. The process of tanning fur skins con- Patented J an. 2, 191?. Application filed January a, 1916. Serial a... 69,776.

sisting in treating the skins with a mineral tanning solution mixed with a fermented solution of wheat flour, yeast, alcohol and ents and in about the proportions herein specified.

Witnesses:

H. L. Frsem. A. L. Knmmr.

ROBERT NAssn.