US162138A - Improvement in bending wood - Google Patents

Description

s. R. BMLEY.

Bending Wood.

No.162138. Patented April20,1875.

THE GRAPH C COJHOTO rLlTH-SQ 1&4] PARK PLAGE,N.Y.

SAMUEL B. BAILEY, OF BATH, MAINE, ASSIGNOR TO EDWARD A. GILLETT, OF BOSTON, MASSAUHUSETTS, AND OSCAR S. GILLETT, OF BUFFALO,

NEW YORK.

IMPROVEMENT IN BENDING WOOD.

Specification forming part of Letters Patent No. 162,138, dated April 20, 1875; application filed April 5, 1875.

To all "whom it may concern:

Be it known that I, SAMUEL R. BAILEY, of Bath, in the State of Maine, have invented an Improvement in Bending Wood for Shafts or Thills of Carriages, Sleighs, &c., of which the following is a specification:

This invention relates to devices for bend- I ing shafts or thills for carriages and sleighs,

and the improvements are fully hereinafter described.

In the accompanying plate of drawings my invention is illustrated, Figure 1 being a plan view; Fig. 2, a side elevation; Fig. 3, a vertical section on line a0 as, Fig. 1; Fig. 4., a side elevation.

In the drawings, A represents a form made of the outline in transverse section shown more particularly in Fig. 3, and this outline form a to a corresponds to the general curvature for the end of a carriage shaft or thill. The form A is hollow, and at b it is connected with any suitable heating apparatus-as, for instance, a' furnace, or a stove, or a steamboilerfor heating it. (Laflexible strap. This strap 0, at one end, is fixed to the foundation D of the form A, and when it is bent around the form it extends beyond the edge cl of the form. The loose end of the strap 0 ends in a block, f. The face g of the strapbloelc f is continuous with the face h of the strap, and this face It is toward the form A. The face 1 of strap-block f tapers along its length, and projects above the strap-face m, and the block f at its inner end has shoulder a. 0 0, two parallel ear-pieces, making abutments p at front edge of form. These earpieces are in such lines that the strap can lie in and between them, as shown, when it is bent down and about the form A, as shown. F, a clamp. This clamp F is in two parts, 1' 3, one, r, an eccentric with a handle, it, and the other a clasp, u, with hook ear-pieces e. The eccentric r is hung by journals to in the books of the ear-pieces 22,,as shown. The clamp is applied to the block f of the strap, and it surrounds both the strap and the shaft-strip, and it has its eccentric r at rest upon the taper face of the block f, all as shown in Fig. 4 of the drawings. ac, a staple having two wedge-shaped prongs, 3 These prongs may be separate, but it is preferable to combine them as a staple. First, suitably steam the straight shaftpiece, and then place it against the inner face h of the strap G-that is, between the strap and the form A. Now apply the clamp, as described, and properly turn its eccentric r to draw the clasp a tightly about the strap and shaft-piece, thereby binding the two (strap and shaft-piece) together, so that the one cannot move upon the other. This being done, now pull the two (strap and shaft-piece) toward the form, and thereby bend the shaft about and against the form, where secure it by driving the staple-prongs y between the form abutlnents p p and the shoulders n of the strap-block f. The staple-prongs draw the strap and the shaft-piece lengthwise about the form, and also force down the shaft and strap to a more perfect contact with the form. 7

So long as the staple 00 remains as above the shaft-piece is held to the form, as described, and while so held by the heat of the heated form it is dried, and thus the sooner set in the curved shape of the form.

The form A may be heated by the direct application of heat thereto, but it is preferable to heat it as described.

Obviously, with heat applied to the form, the shaft can be dried to greater perfection, as to evenness aiid uniformity, than with a cold form, as well as with greater facility and economy of time.

The bending strap and clamps may be increased in number to any desired extent within the length of the form, and in practical use the form will be provided with a series of them.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

1. The hollow former A having the shoulders p p, and adapted to be heated, as described, in combination with the strap 0 havin g the tapering block f, and shoulders n, and clamp F, eccentric 1, and lever t, all constructed to operate substantially as described.

2. The strap 0 having shoulders n n, in combination with form A, shoulders 19 p, and prongs or keys y, substantially as and for thepurpose specified.

The above specification of my invention signed by me this 5th day of September, A. D. 1873.

S. R. BAILEY.

\Vitnesses:

EDWIN W. BROWN, J. P. MoELRoY.

Images