US72395A - Edson hahtwell - Google Patents

Description

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Having described my improved rocking-chair, what I claim therein as new and of my invention, and desire gleitet' Tit-stie @sind ffice.

EDSON HARTWELL, OF HUBBARDSTON, MASSACHUSETTS. Letters Patent No. 72,395, dated December 17, 1867.

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KNOW ALL MEN BY THESE PRESENTS:

That I, EDSON IIARTWELL, of Hubbardston, in the county of Worcester, and Commonwealth ot' Massachusetts, have invented certain new and useful Improvements in Rocking-Chairs; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification, in which- Figure 1 represents a perspective view of my improved rocking-chair.

Figure 2 represents a vertical central section of the chair shown in tig. l; and

Figure 3 represents a section of a detached part.

To enable those skilled in the art. to' which my invention belongs to make and use the same, I will proceed i to describe it more in detail. v l

In the drawings, A represents the frame of the chair, upon which the seat B rests, and to which the hack C is fastened. The' frame A is supported by two arms D D, which are made in this instance of metal, and so fastened to the under sides of frame A as to extend down and rest upon the frame E, which is supported by legs To'retuin the arms D D in place, and at the same time allow their upper ends to have a free baekand-forth motion with the yseat-frame A, their lower ends are notch/'ed or cut out, as shown clearly in tig. 3, the points or teeth a a a passing through holes in plates G, fastened to the tcp ofthe sides ofthe frame E. To properly balance the seatframe A, and retain it in a proper position tovbe used,tw o spiral springs H H are employed. The upper ends ofthe springs are provided with screw-threads and nuts bb,

before they are passed through holes in the cross-piece I, in the frame A. After the ends are passed through the cross-piece I, nuts c c are screwed on, as fully indicated in the drawings. The lower ends of the springs H H pass through holes in the cross-piece J, and are likewise provided with screw-threads and nuts al d and e c. The cross-piece J is, in this instance, fastened to the under side -of the rails K K.

It will be seen from the above description, and by reference to the dra\vings,'that a. person, while sitting in the chair, by a very slight motion of the body, or by a slight pressure of the foot upon the loor, can cause the frame A and back C to rock back and forth, and thus obtain all of the advantages of n. common rockingchair, without the disadvantages attending the use of' chairs having long rockers.

By the use of the springs H H and their nuts, the chair can be adjusted, so as to give the seat any desired inclination when at rest. A The nuts, when once adjusted, prevent all noise which would result from loose `joints of the ends of the springs with the cross-pieces I and J. The chair works wit-hout. noise, and is simple in conto secure by Letters Patent, is`- 1. The combination, with the frames into which' the chair is divided, of the spiral springs H and toothed arms D, arranged foropera'tion in connection with the racks Gr, as and for the vpurposes set forth.

2. The combination, with the springs H H and cross-pieces I and ,LI-ofthe nuts b I), e c, dd, and e c, substantially as and for the purposes set forth.

Epson HARTWELL.

Wtnesses:.

M. A. GREENWOOD, AnRAM'H. WILsoN.

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