US110262A

US110262A - Improvement in machines for bending wood

Info

Publication number: US110262A
Authority: US
Publication date: 1870-12-20
Anticipated expiration: 1887-12-20

Description

UNITED lSTATES PATENT OFFICE..

JOHN MCMIOHAEL, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO VRIGHT BROTHERS & OO., OF SAME PLACE.

IMPROVEMENT IN MACHINES FOR BENDING WOOD.

Specification forming part of Letters Patent No. l 10,262, dated December 20,1870.

` To all whom it may concern:

My invention is made with reference to facilitating the process of bending, reducing the space required to turn out a large quantity of hooks, and reduce the expenses of bending or manufacturing them.

My invention consists in the combination of a grooved upright, heated by steam, with spring-levers and screw-clamp, in order that large quantities of umbrella-sticks or canes can be curved at any desired angle in a short space of time and at a small expense.

Figure l is a front View of my machine. Fig. 2 is a side view of same, with spring-levers broken and detached. Fig. 3 is a back view of Fig. 2, with the cylinder cut at right angles, in order to show the interior of same. Fig. l isa sectional view of Fig. l on the line from the extended part A of the cylinder, are

a series of curved grooves, g g g, which extend around the cylinder and across the part A', as shown in Fig. 3. A short distance from the 'side of the cylinder A and extended part A is a metallic standard, S, as shown in Figs. l, 2, and3, between the said standard, being secured on top` of the table by means of basepiece, through which passes screws or bolts, and at the top is held rigidly by means of a cross-piece, C P, secured on top of the standard and cylinder. In the space between the cylinder A and the standard S, and immediately opposite each groove in the clyinder, is a series of movable clamps, e c c. On the face of said clamps are secured anumber of springlevers, L L L, which extend out and beyond the cylinder A, and are provided with suitable handles, as shown in Figs. l and 4. On the back part of the clamps c c c are cast or formed guides or pins p p, said guides or pins passing through suitable openings in the standard S, as shown in Figs. 2 and 4. In the center of the standard S, and immediately opposite the clamps c c c, are cut openings, the interior of which is provided with a thread. Passing through the said opening is a series of screw-bolts, b b b, for forcing the clamps c c c against the sticks or canes to be bent, and retaining them iirmly in place.

In operating my machine the steam is turned on, and 'enters the pipe B through suitable steam-fittings. The ends oi' the canes or sticks to be bent are placed in a tank or any other suitable vessel, when the steam is admitted, in order to sufficiently soften them. The sticks are then placed by the operator in the grooves between the cylinder and the clamps, With the steamed end to be bent in contact with the iiat or lower end of, the handle of the springlever. The screw-bolts are then screwed up against the clamps by means of a lever or key. The cane is then curled by means of gradual pressure 0r curving of the springlever, which carries around and bends the stick to the desired curve, Where it (the stick) is retained in the grooves of the cylinder until dry by means of a hook or rod which extends over the cane and handle of the spring-lever, as shown by dotted lines in Fig. 4.

I do not desire to limit myself to simply a circular opening through the center and length of the grooved cylinder A, as the opening for steam can be made large, and assume somewhat the form of the exterior of the cylinder, in order that the grooves in the cylinder can be heated to a greater degree, and thus dry the sticks or canes more rapidly.

I am aware of the patent issued to Henry Winter, under date of May 3,1870, forbending-machine, and therefore do not claim any In testimony WhereofI have hereunto signed of the devices contained therein. my nume in the presence of two subscribing` Havingthus described my invention, its con- Witnesses.

struction, and operation, what I claim, and dcy sire to secure by Letters Patent, is- JOHN MCMICHAEL.

The grooved cylinder A, constructed as herein specified, in combination with the Vitnesses:

standard S, clamps c c c, spring-levers LL L, Jos. H. CorrUoif,

and screw-bolts b b b, operating substantially FRANK SToUT.

as and for the purpose set forth.