US90006A - Method of preparing and embossing wood - Google Patents

Description

STATES 4PATENT OFFICE..

i WILLIAM KOPP, OF LOUISVILLE, KENTUCKY.

METHOD OF PREPARING AND EMBOSSING WOOD.

Specification forming part of Letters Patent No. 90,006, dated May l1, 1869.

.To all lwhom it may concern:

Be it known that I, WILLIAM KOPP, of Louisville, county of Jefferson, and State of Kentucky, have invented a new and useful Method of Preparing and Pressing Wood, designed in many cases to form a substitute for carved work on furniture and the like; and-I do hereby declare that the following is a full and eX- act description thereof.

The nature of this invention consists in preparing and pressing this article, but not in the form of the press, as the pressure can be accomplished by either lever, screw, or hydraulic, if only powerful enough.

These articles can. be made of most sorts of Wood, but the preparation and art of pressing presents the novelty of my invention; and in order to enable others to make and use my invention, I will proceed to describe the method of its preparation and 'system of pressing.

I prepare the wood to receive the pressure of flowers or ornaments on one side by making it wet and hot; then I rub it with wax, to

Amake it tough and supple, that it does not breakvor stick to the stamps then I paste or glue tothe back side of the woodthat is, the plain side, where no impression comes-a pasteboardor thicknesses of paper, to make one-quarter ofthe whole thickness, so that the wood is in the proportion of three of wood to one of paper in thickness.

The paste or glue to glue this paper on is made ot' flour, alum, and water; and when I commence pressing, the bed, or pressin g-plate, where this article is pressed on, as well as the stamp itself, is made very hot, which heat, with the chemical quality of the glue and pasteboard, causes the pasteboard and glue t0 dissolve, or form a sort of a hard, tough pap, and thereby lill out the elevated vacancies in the `nished article, caused by the wood Aretaining its original thickness, so that, when finished pressing, this pap will be considerably thicker where the designs are more elevated than where they are depressed. Those dies have sharp edges outside, and I press these articles on a sheet of plastic pasteboard laid on the pressing-block, and exert such a pressure that the sharp outside edge of the die presses the article and cuts off its outside edges at the same time; and when pressed it can be immediately removed from the press,

as, through the chemical quality of glue and pasteboard, with the great pressure and great heat, it becomes hard and dry, and ready for useI as soon as pressed.

The preparation of the wood with wax serves a double purpose and produces two distinct effects: First, it renders the wood pliable, soft, and plastic, preventing the fibers v from breaking when the wood is pressed 5 and, t

lcuts the wood and pasteboard as the latter is pressed into it, while the flat die enables me to form the back of the pressed wood Hat, so

.as to be ready t0 be glued onto any desired outside of wood-work in the same operation.

As the sharpedged dies cut the pasteboard, those parts of the latter which cover the places in the wood which, by pressing, become raised, this pasteboard, mixing, under a high pressure ofthe other, or flat die, with the glue, forms a sort of pulp with the latter, which pulp at once hardens and dries, and so ills the cavities on the reverse side of the pressed wood that the same retains its shape at once, without the necessity of drying it gradually, as is now generally the case.

I do not claim, broadly, pressing wood into certain shapes or forms, nor the treament of the same with any article whatever, as I am well aware that such has been done and used before; but

What I claim as new, and desire to secure by Letters Patent, is

1. The method of pressing wood into certain shapes and forms by pressing itwith one sharpedged sunkl and one at die, the former of which cuts the pasteboard, while the latter forces it into the cavities on the reverse side of the pressed Wood, substantially as and for the purposes set forth.

2. The method of gluing pasteboard on the reverse side of wood to be pressed with such glue composition that the pasteboztrd and glue, when hea-ted, out, and pressed, will combine to form :t pulp, which lls the cavities on the reverse side of the pressed Wood, and dries during the operation, substantially as and for the purposes set forth.

WILL. KOPP. Witnesses:

MATTHEW FLETCHER, A. W. WALLER.

Images