US59281A - Improvement in the manufacture of paper - Google Patents

Description

UNITED STATES PATENT QFFIGE.

TAL. P. SHAFENER, OF LOUISVILLE, KENTUCKY.

' IMPROVEMENT IN THE MANUFACTURE OF PAPER.

Specification forming part of Letters Patent No. 59,2Sl."dated October 30, 1866 antedated October 17, 1866.

To all whom it may concern:

Be it known that I, TALIAFERRO P. Sarina mm, of Louisville, Jefferson county, State of Kentucky, have made new and useful Improvements in the Manufacture of Paper suitable for bank notes, promissory obligations, evidences of debt, and many other purposes; and I hereby declare the following to be a full, clear, and exact description of thenature'and process of manufacture of the same, sufficient to enable one skilled in the art to which it appertains to manufacture and use the same.

My invention consists in the method of manufacturing paper after the pulp for making it has been fully prepared by adding to the pulp metallic powder or filings, or otherwise placing metal in the body of the paper.

My process consists in having a perforated cylinder adjusted to revolve immediately behind the mechanism that receives the pulp distribute the metallic powder into the pulp at any time before it becomes paper.

The metallic powder maybe mixed with benzinc and precipitated into the pulp by mixing, or it may be otherwise injected into the pulp or paper.

I employ another process to put metal in the body of the sheet, namely: I coat either one or both sides of the paper (of any desired length and width) with a solution of indiarubber or caoutchouc dissolved in benzine or other solvent liquid. This coating may be made with a-brush, or the paper may be carried between felt rollers saturated with the solution. The benzine is then allowed to evaporate, leaving upon the surface of the paper a thin coating of india-rubber. I then cover the whole with metallic powder, which may be done with a brush, or the sheet of paper may be carried between rollerswith' fixed brushes of fine hair thereon, so as to allow the brushes to spread the powder over the entire surface of the paper.

I employ another plan, namely: I mix the metallic powder with the solution, and then spread the compound upon the paper by means of felt rollers saturated with the said mixture.

employed to produce intelligible marks or symbols.

The deposit of yellow metal powder to form a part of the body of the paper, or as a covering, as hereinbefore described, will preventsuccessful counterfeiting, as the color yellow cannot be transferred by the photographic art, and the metallic part or parts cannotbe removed from the paper thusprepared, by chemical action or otherwise, without destroying the paper. When a coating of pulp has been placed over the metallic surface the same result will be effected.

Having described my invention, what I claim therein as new, and desire to secure by Letters Patent, is-

1. The depositing distributively in pulp one or more kinds of metallic powder immediately a before said pulp is woven into paper, the object being to scatter the metallic particles into the body of the paper manufactured from said pulp, substantially as hereinbefore described.

2. The covering or saturating paper with dissolved caoutchouc or india-rubber for the purpose of holding metallic powder upon the surface of or for carrying the said powder'into the body of the paper covered or saturated, substantially as hereinbefore described.

3. The manufacturing of paper by placing upon an inner surface thereof a coating of dissolved india-rubber or caoutchouc, either mixed or unmixed with metallic powder, or by spreading the powder over the surface of the india-rubber coating, contemplating the covering of said metallized surface with a film of paper woven thereon from pulp, or by pressing another sheet of paper in such manner as will unite the whole practically as one body of paper, substantially as hereinbefore described.

TAL. P. SHAFFNER.

"Witnesses:

EDW. F. BROWN, R. P. ANDERSON.