US3362A - Improvement in making paper - Google Patents

Description

UNITED STATES PATENT OFFICE.

IMPROVEMENT IN MAKING PAPER.

' Specification forming part of Letters Patent No. 3,362, dated December 4, 18-13,

the bark of the wild banana, (Musa textilis.)

We make use, mostly, of the. old junk of what is termed in navigation grass rope," cutting and picking it, as is usual with other kinds of paper-stock. We then buck or boil it with \\'ater in a large kettle, adding lime in the proportion of one barrel to thirty-five hundredweight of stock. \Ve continue the boiling for about twenty-four hours, or until the cohesion of the fibers is destroyed. We then put the stock thus prepared into thecngine, and after washing it from one to four h'ours,according to circumstances, beat it about four hours. The pulp thus prepared we manufacture into paper inany of the usual modes. Instead of lime, we sometimes use potash, soda-ash,or other alkaline substances of like properties.

We claim to be the first discoverers of the fact that the gummy, resinous, or other matters which bind together the fibers of the substances known as Manila grass may be so dissolved by the process of boiling in an alkaline lye that the fibers will become separated and a material produced capable of being manufactured into paper of the best description.

We do not claim the process herein described as applied to any other materials; neither do we claim the employment, in conjunction with other stock, of a portion of Manila grass reduced to astate of minute division bymechanical means alone.

We consequently claim as our invent-ion and desire to secure by Letters Patent- The application of the chemical process of boiling in caustic alkaline lye, substantially in the manner herein set forth, to the vegetable substance known as Manila grass, for the purpose of preparin g the same to be converted 7 into paper.

JOHN M. HOLLINGSWORTH. LYMAN HOLLINGSWORTH.

Witnesses:

R. B. CARTER, CHARLES CRANE.