US982973A - Method of treating box-shooks. - Google Patents

Description

METHOD .0F TREATING BOX SHOOKS. APPLICATION FILED APR. 2, 1910.

982,973., PatenaJan. 31, 1911.

Q hill-1 ma!! Inh. i.

www @A MM being all of a standard O llhlillF STATES PATENT FFE.

MERTON J. MILLER, OF LOS ANGELES, CALIFORNIA.

METHOD OF TREATING BOX-SHOOKS.

Be it known that I, Mnn'roN J. Minnen, a citizen of the United States, residing atl Los Angeles, in the county of Los Angeles and State of California, have invented a new and useful Method of Treating Box- Shooks, of which the following is a specification.

This invention relates to a method of treating' box shocks, so as to enable shooks Which are defective by reason of knot holes or other imperfections therein to be brought to a condition in which they will be free from such defects and will present substantially the same appearance as if they were made of sound lumber, and the main object of the invention is to provide a method for accomplishing this result in economical and rapid manner, whereby the operation is capable of being carried ont commercially on a large scale.

Another object of the invention is to provide a method of treating box shocks as stated, whereby a flush or even surface may be provided on one face of the box shook by an operation capable of heilig carried out in a .rapid and economical manner.

The invention comprises a method of operation and the box shook produced therebyf said method consisting essentially in boring or otherwise forming at the several knot holes or defects in the lumber an opening or hole of sufficient size to include the knot hole or defect, all the holes being of a given standard size so as to render the method generally applicable to all of the lumber Without detail fitting to each particular piece, and subsequently closing said holes with a Wooden plug of corresponding shape and size, said plug occupying substantially the entire hole, but being particularly fitted With reference to the face side of the shook so as to present aA flush surface. The plugs size and shape, there 1s no question of selection thereof to tit the different sizes and shapes of holes or other defects in the lumber, and the boring and filling operation can be carried ont in a routine manner largely by machinery, thereby reducing the expense of the operation to a minimum.

The accompanying drawings illustrate the manner in Which the invention is carried out, and referring thereto:

Figure l is a plan of a defective box shook. Fig. 2 is a longitudinal section Specification of Letters atent.

Application tiled April 2, 1910.

Patented Jan. Si., 191i.. Serial No. 553,148.

thereof on the line 2-a22 in Fig. l. Fig. o is a plan of the shook board Without the defects in accordance vvith the present method. F ig. et is a longitudinal section on the .ine #Een in Fig. 1:3. Fig. o is a plan ofone of the plugs. Fig. G is a transverse section thereof. Fig. T is a plan of the shook with the plug in position therein. Fig. 8 is longitudinal section on the line aisms in Fig. 7. Fig. 9 is an inverted plan of the finished shook, showing the means at the inside of the shook for fastening the plugs therein. Fig. l() is a horizontal sec-A tion on the line aulo- 010 in Fig. 9. Fig. ll is a perspective of one o-f the crimped fasteners for fastening the plugs in place. F ig. l2 is a partial plan of a shook showing the application of the invention for the elimination of an unusual defect in the work requiring the application of more than one plug.

ln carrying out the invention, the de` fcctive shocks are separated from the clear shooks. l designates such a defective shook having' a knot hole or defect 2. By means of a suitable boring tool or other cutter, preferably an annular saw, the shook l cnt or bored at or adjacent to the knot hole or defect 2 so as to remove all of the portion of the wood containing such defeet as shown in Fig. 2 and Fig. .4.. The openings or bores 3 are of uniform erstandard size .irrespective of the variations or differences in the knot holes or defects 2. Plugs f-it, see Figs. and G, are provided corresponding in size and shape to the bores or openings S3, said plugs being therefore all of standard or given size. The shook l is placed on a suitable support or table, indicated at 7, in Fig. S, and a plug i is pressed or shoved down into the opening 3, so as to close the same and to tit tightly therein, vsaid plug being shoved down onto the table 7 so that it is flusn with the underface of the shook l.. The plug is then fastened in place by means of suitable fasteners 9, preferably crimped fasteners, as shown in Fig. ll, said fasteners being inserted. into the rear or inner side of the shook and of the plug, so as to enter said parts at the rear thereof, but not to penetrate through to the front, thereby presenting a clear surface to the front or outside of the shook. By performing all the boring operations successively and all of the plugging or iilling operations successively the expense is reduced to a minisaving in lumber and in cost of defective sections in the shook.

cutting out As the metallic fasteners 9 are driven into the Wood,

they serve as keys or wedges, expanding the material of the plugs and causing the saine to bind or press against the Walls of the opening 3, this Wedging or binding action insuring retention of the plugs in place.

The plugs l may be of a thickness somewhat greater or somewhat less than that of a shook, but it is preferred to place said plugs as stated so that their outer faces Will be flush `'with the face of the shook so as to present an even surface as far as possible. lt. will be understood, however, that the purpose of the plugs is primarily to close the openings in the shook. llvenuess of the surface, particularly7 on the inside, is of secondary importance. ln most cases box shooks are surfaced on one side, namely, the side which is to be presented atthe outside of the box, and the plugs le are preferably similarly surfaced on one side, beine', for example, cut from the Waste or scraps of the lumber from which the shooks are cut.

Vhile the plugs are described as being of a standard or definite size, it will be understood that in a large mill Where the output is suficient to justify classification of the shooks, two or more sizes may be used, for example, to `provide for large and sniall knot holes. l prefer, however, in the case of extra large or irregiuar knot holes which cannot be eliminated b v the `use of a single plug, to use a plurality of plugs in the inanner indicated in Fig. l2 Where the dotted line 2 indicates a large knotv hole of irregular contour. ln that case a bore indicated at 3 is rst made so as to include a portion of said large knot hole, this bore being then closed by a plug en fastened by fasteners E) as above described, and another bore or opening 3 being then formed so as to include another portion of said knot hole, said bore .intersecting and cutting out a portion of the irst inserted plug and being then closed by a second plug 4, this operation being repeated as often as is necessary to close the` hole. rl`he plug or plugs Which are later inserted are fastened not only by fasteners 9 extending into the body of the shook l, but also by a fastener or fasteners indicated at 9 connecting the several plugs.

Fasteners 9 are preferably of crimped metal having a knife edge or beveled edge 9 at one end thereof to facilitate driving the saine into the Wood. Said fasteners are sufficiently short so that in general with the usual thickness of shook they do not extend clear through, being inserted or driven into the shook and plugged from the rear side thereof. ln sonic cases, however, particularlyv When the shook is of extremely thin stock, these fasteners may extend clear through to the front face, and may even be driven from the outside, When the external appearance is immaterial.

TWhat l claim is:

The method of treating a box shook having a knot or other defect therein which consists in forming an opening therein, including said defect, placing the shook with its finished face'fagainst a Work support having a substantially plane surface, inserting a plug in the opening with its finished face in engagement With said Work support, and securing the plug in position by driving fastenings through the adjacent portions of the shook and plug in a direction to force said parts against the Work support;

In testimony whereof, l have hereunto set my hand at- Los Angeles California this 26th day of March 1910.

MERTON J. MILLER. ln presence of- ARTHUR P. KNIGHT, l). H. SHELTON.

Images