US1052405A - Method of bending wood. - Google Patents

Description

J. T. BREEGB. METHOD OF BENDING WO OD. APPLICATION IILEDSEPT. 25, 1911.

Patented Feb. 4, 1913.

TE s'rnrns JOHN '1. BREECE, OF PORTSMOUTH, OHIO, ASSIGN'OR OF ONE-HALF T0 CHARLES O.

BREECE, OF PORTSMOUTH, OHIO.

METHOD 0F BENDING WOOD.

Specification of Letters Patent.

Patented Feb. 4,1913.

App1ication filed September-25, 1911. Serial No. 651,100.

To all whom may concern Be it known that I, J OHN T. Benson, a citizen of the United States, reslding at Portsmouth, in county of Scioto and State of Ohio, have invented certain new and use ful Improvements in Methods of Bending Wood, of which the following is a specification.

My invention relates to an improved method of bending wood, and is an improvement upon the invention set forth in Letters Patent No. 938,366, granted to me October 26, 1909, in which the preferred procedure was to form two rims at one bend of mateveneer, it is possible to entirely dispense with the necessity of steaming which is required in order to make the solid rim flexible. In my present invention in lieu thereof, three or more built-up rims composed of layers properly proportioned as to thickness are bent and fashioned at a single operation, without the use of any solid rim. This invention, like the other, is especially adapted for bending table rims, although its application may be extended indefinitely, and

this-invention consists in certain novel procedure, which will be hereinafter described and pointed out in the claim.

In the accompanying drawirigsz-Figur'e l is adiagrammatic view in side elevation illustrating a machine in whichthe bending is accomplished, just prior to the bending, Fig. 2 is a similar View showing the parts bent around the form, and Fig.3 is an enlarged transverse sectional view through 4 three sets of built-up rims.

In this invention each rim is preferably composed of. three properly portioned'layers or veneers 1,2, and 3, respectively. These strips are coated on their inner surfaces with glue, preferably by passing them through a machine for this purpose, although it might be done by hand. Then the rim thus built up of three layers or veneers is placed on the flexible bending band 5 of the machine. This band may be made sufiiciently wide to accommodate one or more rims, as the case may be. Then over this or these rims, I place an interposed layer 6 of flexible material impervious to water, such as sheet or galvanized iron, for instance. On top of this layer of flexible material a corresponding number of built-up rims of three layers is superimposed, then another, also of flexible material impervious to water is placed on top, and over that a third rim or set of rims built up of three layers or veneers is placed. Then they are placed in the machine, as illustrated in Fig. 1, and bent cold as shown in Fig. 2, the pressure upon the ends of the veneers through blocks 10, 10, on levers 11, 11, during the bending having the effect of creating a uniform outward pressure of the inner built-up rims throughout their entire length, thus causing the entire contacting surfaces of veneers or .layersto come into solid contact with one another, causing them to adhere throughout their entire contact ing surfaces, and produce the eflect of a perfectly solid rimn In other Words, the end press-ureresults in an equalized and evenly distributed radial pressure throughout the entire length of the inside rims, so that every point of contact is subjected to equal compression, and the built-up layers are brought tight together and made to perma: nently adhere at every point of contact throughout their entire area.

Having fully described my invention, what I-claim as new and desire to secure by Letters Patent, is :e'

posing a plurality of unsteamed built-up rims only upon a flexible bending member, the layers of each built-up rim properly proportioned as to thickness and having adhe- -sive material applied to adjacent surfaces,

interposing layers of flexible material between said sets of built-up rims, then bending said superimposed built-up rims. with.

intermediate flexible layers around a form and simultaneously applying endwise pressure-to the innermost layers against the remaining layers confined by the flexible bend ing member whereby the several superimposed buiP-up rims are simultaneously subjected to uniform pressure throughout their length and area due to the bending and the endwise pressure exerted upon the innermost layer 0;" layers against the lateral and c0nfining pressure of the flexible bending member.

JOHN T. BREECE. Witnesses:

JAMES M, WILLIAMS; SARA MILLER.

Washington, D. C.

five cents each, by addressing the Commissioner of I'atents'

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