US304584A - Heney clay tunis - Google Patents

Description

FLOORING, WAINSG 0000000 e.

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y lUNr'rn HENRY CLAY TUNIS, OF BALTIMORE, MARYLAND.

FLOORING, WAlNsCoTlNG, sbc.

.FECIEICATION forming part of Letters Patent No. 304,584, dated September 2, 1884.

Application filed June 10,1884. (No model.)

[0 all whom it may concern- Be it known that I, HENRY CLAY TUNIS, a citizen of the United States, residing at Baltimore, in the county of Baltimore and State of Maryland, have invented certain new andnseful Improvements in Flooring, Vainscoting, &e., of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to certain new and useful improvements in manufactured lumber for iiooring, ceiling,wainscoting, and the like. As heretofore made the boards have been provided with tongues whose edges in cross-section form the arc of a circle, thereby presenting a blunt termination, while the thickness of the tongues is substantially the same across their entire width. These boards are also provided with a groove on the opposite edge to that on which the tongue is formed, the groove, however, generally being of rectangular form in cross-section. As thus constructed, itvhas been ascertained by actual trial that difficulty is frequently experienced in getting such tongue to readily enter thc groove of the adjacent board, which is due, primarily, to the blunt shape of the tongue, and, secondly, to the inequality in the seasoning of the different strips. By my improved lumber, however, the difficulty 'thus arising is practically obviated, for the reasons which will more fully hereinafter appear.

My invention has for its object-s, first, to provide the lumber with a tongue ofI such shape or configuration that it will more readily enter the groove of theadjacent strip in the act of laying ooring, wainscoting, ceiling, 8vo.; and, second, to provide such lumber with a tongue on one edge of such shape or configuration that it will more readily enter the groove of the adjacent strip, and on the other edge with` a groove having a flaring mouth or entrance, whereby the operation of uniting such material may be more readily effected in laying iiooring, wainscoting, ceiling, and the like.

In the accompanying drawings, forming a part of this specification, and on which like letters of reference indicate the same or corresponding, features, Figure 1 represents a transverse sectional view of a strip of lumber formed into a board having` my improved tongue; and Fig. -2, a like view of two boards,

showing the same united and provided with my improved tongue and groove.

The letter A designatesastrip of lumber formed or fashioned into a board for iooring, wainscoting, or ceiling purposes. On one edge this board is provided in its manufacture with a tongue, B, having its outer edges or corners cut away, so as to converge and meet or nearly meet each other at or about the center of the tongue. As a consequence'of this beveling or cutting away the edges of the tongue, the latter is given a tapering configuration in crosssection, the angle or degree of the said inclination being such as may be found best in practice. The preferred angle, however, is that of forty-tive degrees.

The letter D designates the groove, which in some instances I also form on the opposite edge of the board to that occupied by the tongue. This groove, as represented at E, has its outer corners or edges beveled correspondingly or approximately correspondingly to the tongue. The inner wall or termination of the groove may, if desired, be formed so as to correspond in shape with the outer edge of the tongue, as seen in dotted lines. This beveling of the edges of the groove and cutting away of the inner wall thereof may, however, be omitted, and the groove in cross-section allowed to retain its usual parallelogrammatic form, since I have ascertained by actual trial that my improved tongue can be used with great advan` tage with such usual form of groove.

4It is to be observed that in consequence of the tapering configuration of the tongue it will more readily and easily enter the groove of a board in the act of laying the several structures in which tongue-and-groove boards are used. I

It sometimes happens that in consequence of the roughness on the inner wall of the groove or the outer edge of the tongue as ordinarily made it is difficult to make one board drive up close to the next, so as to make a tight joint. Vith my improved form of tongue such difficulty is obviated, if met with by battering or indenting the sharp edge of the tongue, which, owing to its shape, is easily done.

Having thus fully described my invention,

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

ICO

l. As a new article of manufacture, the herein-descrloed board, having a tongue with parin-deseriloed board, having on one edge thereof allel sides and beveled off on the corners to a tongue constructed with parallel sides and form a point, and a groove constructed with 15 beveled off on the corners to forin a point, and parallel walls, and having its outer corners 5 on the other edge thereof a groove with parbeveled or out away.

allel walls. In testimony whereof I afx my signature in 2. As anew article of manufacture, theherepresence of two Witnesses. in-described board, having a groove in one edge thereof constructed with parallel walls, HENRY CLAY TUNIS 1o and having its outer corners beveled or cut I Witnesses: 'l

away. EDWIN L. BRADFORD,

3. As anew article of manufacture, theherc- JAMDs M. DURAND

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