US954848A

US954848A - Wood-bending machine.

Info

Publication number: US954848A
Application number: US48767909A
Authority: US
Inventors: Henry William Bason
Original assignee: AMERICAN BENT WOOD CHAIR Co
Current assignee: AMERICAN BENT WOOD CHAIR Co
Priority date: 1909-04-03
Filing date: 1909-04-03
Publication date: 1910-04-12
Anticipated expiration: 1927-04-12

Description

H. W. BASON. WOOD BENDING MACHINE. APPLICATION FILED APR. 3, 1009.

954,848. Patented Apr. 12, 1910.

2 SHEETS-SHEET 1.

INVENTOR- H. W. BASON. WOOD BBNDING MACHINE. APPLICATION FILED APR. 3, 1909.

2 SHEETS-SHEET 2.

Patented Apr. 12,1910.

WITNESSES:

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UNITE STATES ATENT HENRY WILLIAM BASON, OF MEBANE, NORTH CAROLINA, ASSIGNOR, BY MESNE AS- SIGNMENTS, TO AMERICAN BENT WOODOI-IAIR COMPANY, OF OTEGO, NEW YORK,

A CORPORATION OF NEW YORK.

VVOOD-BENDING MACHINE.

To all whom it may concern:

Be it known that I, HENRY W'ILLIAM BASON, a citizen of the United States, residing at the city of Hebane, in the county of Alamance and State of North Carolina, have invented certain new and useful Improvements in Wood-Bending Machines, of which the following is a specification.

My invention relates to wood bending machinery, and the object of my invention-is to provide a machine for bending wood particularly adapted for use in the manufacture of bent wood chairs. I attain this object by means of the mechanism illustrated in the accompanying drawings, in which:

Figure 1 is an elevation partly in section. Fig. 2 is a side elevation. Fig. 3 is a sectional view of fastening means for frame.

Similar letters refer to similar parts throughout the several views.

In order to bend the rails to make the bows and legs for the back and support of a chair it is necessary to steam the rails, in order to make them pliable. I have a former, A, which is hollow and into which, through the pipe, B, steam may be introduced, the outlet pipe, C, forming a drip.

The former, A, is provided with a series of corrugations, D, and into one of these corrugations, D, at the top of the former, A, I place the rail, E, which will occupy the position shown by dotted line in Fig. 1. In order to cause the rail, E, to conform to the contour of the former, A, I cause the rollers, F and G, one on each side of the medial line of the former, A, to engage the rail E. The roller, F, is mounted to reciprocate in the slot, f, in the frame, M. On the bolt, h, which carries the roller F, I place one end of the link, J, which may be held in position on the bolt by the spring, j, and nut is. The other end of the bolt, h, eX- tending into the slot, f, is provided wit-h a suitable nut or head, m. The link, J, being attached to the lever, L, which lever is fulcrumed at 1 to the frame, M.

I arrange on the side of the machine, opposite the location of the lever, L, roller F and connections, a similar lever, 5, roller G and link 3, mounted as described in reference to the first mentioned roller, link, 1ever etc.

When the rail, E, is placed in one of the corrugations, D, on the former, A, beneath Specification of Letters Patent.

Application filed April 3, 1909.

Patented Apr. 12, 1910.

Serial No. 487,679.

the rollers, F and G, the operator draws down the levers, causing the rollers to force the rail around the former, A, acting thereupon until the rollers assume the position shown by the roller G in Fig. 1. The rail, E, is then, when both rollers are in the position shown by the roller, G, in Fig. 1, curved about the former A in the shape of the back of a chair.

For the purpose of causing rail E to be forced toward the center line of the former, A, from the position it is shown to be in at the left of Fig. l, I provide a rod, N, operating in a suitable groove, n, in the frame, M, to which is attached a link, 0, connected by the bell crank lever, P, fulcrumed at, p, and operated by a pedal, Q, connected by a rod, g, with one arm of the bell crank lever, P, whereby pressure on the pedal, Q, will cause the rod, N, which engages the rail E to be forced toward the former A, and when placed in position connecting with the former, as shown on the right of Fig. 1, a catch, R, is turned to cause its arms, 1,to engage with the rail E and hold it in position against the former A. The catch, It, being preferably a forked shaped block fastened in a slot, S, (formed in the side of the former, A, being protected by the interiorly projecting wall, S by nut, 8, on the shank, S, thereof. The forked prongs, 1", of the catch, R, are adapted to engage the rail E. The rail is now locked securely to the former, and the eflect of the heat from the former causes the rail to be dried in its bent position, where it is held until it may be removed from the former without having a tendency to spring out of its bent and formed position.

In order to place a second rail in position on the former, A, it is necessary to move the frame, M, and its connections longitudinally of the former, in order that the next rail may engage one of the corrugations, D, thereon. To accomplish this I mount the frame, M, upon the casting T, upon which casting it reciprocates. The rack, U, engaging with the pinion, V, operated by the wheel W, causing the frame, M, to be moved along the casting T.

It is understood that the former, A, and its connections are supported upon a suitable table, here shown as casting, T, provided with legs, Y, in order that the base of the frame may be suitably raised above the floor to permit of convenient operation of the pedals and the movement of the pinion beneath the table. It will also be understood that on each side of the former, A, I have a rod, N, link, 0, and bell crank lever, P, rod, Q, pedal Q and connections.

On each side of the frame, M, I provide a guide, Z, near the bottom of the frame which tends to give the end of the rail, I), the proper curve in its position on the former A.

For the purpose of retaining'the frame in its position on the rack, U, during the bending process, I place a spring bolt, l, Fig. 3, passing through the frame, M, and the casting, T, through the openings, 6, therein, as shown in Figs. 1, 2 and 8.

I do not wish to limit myself to the contour of the former, as I may vary that to suit the requirements of the article to be constructed, and I do not wish to limit myself to the means of causing the rail to be forced into position on the former, as many similar means for accomplishing this result might be employed without departing from the spirit of my invention.

What I claim as my invention and desire to secure by Letters Patent is:

1. In a wood bending machine; a former provided with a series of corrugations adapted to receive a series of rails for making the bows and legs for the back and support for a chair; a means for conducting a heating element thereto; a means for conducting the drip therefrom; a support for said former; a frame adjustably mounted on said support; a mechanical means for moving said frame longitudinally of said former; a pair of levers pivoted to said frame above and substantially in a line with the medial line of said former; a link attached to each lever and to a bolt movable in a curved slot in the frame on each side thereof; a roller mounted on each bolt adapted to engage a rail placed on said former; a pair of rods mounted on each side of said former in said frame; bell crank levers pivoted to said frame; links connecting said bell crank levers to said rods, respectively; pedal rods connecting said bell crank levers; pedals at tached to said pedal rods, respectively; a pair of catches mounted in said former on each side thereof; each catch provided with prongs adapted to hold the rail in contact with the former after it has been forced in connection therewith by the action of said rods, substantially as described.

2. In a wood bending machine, a former provided with a series of corrugations; a means for heating said former; a frame; a table adapted to support said former; a means for adjustably mounting said frame in connection with said table; a pair of levers mounted in said frame substantially above the medial line of said former; rollers mounted to travel in curved paths, respectively, in said frame; a means for moving said rollers in their curved paths by the operation of said levers, respectively; rods mounted in said frame on each side of said former; pedals on each side of said frame; bell crank levers mounted in said frame operated by said pedals; means for connecting said bell crank levers with said rods, respectively; a pair of arms mounted on each side of the frame adjacent to the former adapted to guide the ends of the rail when forced in contact with the former by said rods; a rack mounted beneath said table; a pinion engaging said rack; a shaft mounted in said frame carrying said pinion; a wheel on said shaft adapted to operate said pinion; substantially as described.

3. In a wood bending machine; a former piovided with means for supporting a se ries of rollers; a means for conducting the heating element to said former; a table upon which said former is mounted; a frame adj ustably mounted in connection with said table; a lever mounted in said frame; a roller mounted in said frame; a means for causing said roller to move in connection with the work placed on said former in a curved path by the operation of said lever; a rod mounted in said frame; a pedal; a means for connecting said pedal with said rod by the operation of which pedal said rod is pressed against the work after it has been operated on by said roller and forces it in contact with said former; a rack attached to said table; a pinion mounted in said frame adapted to engage said rack; a means for operating said pinion, whereby the frame may be moved along said former; a a spring bolt mounted in said frame and adapted to engage suitable opening in the table to hold the frame in its position on said rack during the bending operation of the machine.

4%. In a wood bending machine; a former provided with a series of corrugations thereon; a means for conveying steam to said former; a table upon which said former is mounted; a frame adjustably connected with said table; levers pivoted in said frame above said former; rollers; bolts upon which said rollers are mounted moving in curved paths in said frame adjacent to said levers, respectively; a means for connecting said bolts with said levers, respectively; a means mounted in said frame, on each side of said former, for engaging the work after it has been bent over said former and forcing it in contact with said former; said means put in operation by pedals; said pedals mounted in said frame; a means engaging said table and said frame whereby the frame may be moved longitudinally of said former.

5. In a wood bending machine; a former;

a means for heatin said former; a table upon which said former is mounted; a frame adjustably connected with said table and extending over a portion of said former; a lever attached to said frame; a roller mounted in connection with said frame; a means for operating said roller in a curved path by said lever; a rod mounted in said frame; a bell crank lever mounted in said frame connected with said rod; a

pedal connected with one arm of said bell crank lever, whereby said rod may be forced in contact with the work on the former; a catch adapted to hold said work in contact with the former; a means for causing said frame to move on said table; substantially as described.

In testimony whereof I have affixed my signature in presence of two witnesses.

HENRY WILLIAM BASON.

Witnesses:

Lo'r'rm PRIOR, FREDERICK WV. CAMERON.