US97189A - Improved paper felt or wadding - Google Patents

Description

fitnitnl $153M game "ctjifiira WILLIAM W. GLENTWORTH, Oh PHILADELPHIA, PENNSYLVANIA, AND \VILLIAM H.

GANDEY, 0F LAMBERTVILLE, NEW -JERSEY.

Letters Patent N 97,189, dated November 23,1869.

nvrrnovnn PAPER r'EL'r 0R WADDING.

The Schedule referred to in these Letters Patent and making part of the same.

- To all whom it may concern:

Be it known that we, WILLIAM \V. Gbnn'rwon'rn',

M. D., of Philadelphia, Pennsylvania, and WILLIAM H. GANDEY, of Lltll'lbtl'tViilB, New J erscy, have invented a new article of manufacture, termed Paper Felt, which is described as follows:

Nature and Objects of the Inrcntipn.

'rags to only a partial pulping-process, so thattbe thread of the rags will not be completely disintcgrated.

A special oontrivauce is necessary to assist in carrying this imperfect pulp up on the cylinder, from whence it is taken and dried, without the pressurethat is usually employed in the manufacture of paper.

\Ve thus produce a fabricposscssing great capacity for absorption, and of great utility as a material for surgical dressings, lining of childrens diapers, table-' covers, bed-clothing, wadding of all kinds, filtering, and a great variety of other purposes.

General Description.

. In carrying out our invention, the rags are boiled and washed, and bleached as for the n'ianufacturc of ordinary paper, until they reach the condition known as half stufl'.

They are then, witho'nt'further pulping, formed into a sheet, on the n'iakiug-cylinder, but the stuff being so light and porous, it will not adhere to the cylinder until reaching the couch-roller in machines as ordinarily constructed and arranged.

We therefore carry the wet felt under the surface of the water, and employ it to hold the stuif in contact with the cylinder, nut-ll reachingthe couch-roll, beneath which it passes in customary. manner, but with the lightest possible pressure which will successfully remove it from the cylinder. 5

It is then carried to the rolls, but instead of using thopress-rolls, employed in ordinary rmper-mauufacture, we employ wooden rolls, with as light pressure as can be used to remove the sheet from the felt.

It is then carried immediately to the driers, without a drier-felt.

o The forming and drying-processes are thus performed throughout with the least possible amount of pressure.

After leaving the driers, the sheetis subjected to a softening-process, which may be performed by passing it between a pair of rolls, corrugated circumfereutially, and then over. .an angular metal snrface,\vl1 ere it is subjected to the beating action of a rapidly-revolving roll, having longitudinal corrugations, the effect of which is to crush and spread the corrugations produced in the sheet by the prior rolls; and by passing it through a series of such appliances, arranged alternately, the material acquires a uniform and very soft texture, with even greater porousness than when first dried.

A material thus made has a capacity for absorbing hence may form an excellent and cheap material for bed-clothing, which, when worn out or soiled, can be sold for fully a third of its first cost, as a material for making paper.

We claim, as our invention- 1. The paper-felt, produced in the manner and by the process substantially as above described.

2. The process, substantially as herein described, for producing our new manufacture, by taking the material up on the making-cylinder, while in the condition of half stuff, and subsequently drying it with little or no pressure.

\V. W. GLENTWORll-l, M. 1). \VM. H. GANDEY. \Vitnesses BENJ. Monrsox, WM. H. Momsox.