US11725A

US11725A - Moses e

Info

Publication number: US11725A
Authority: US
Publication date: 1854-09-26
Anticipated expiration: 1871-09-26

Description

NYPEERS, FMOTO-LITHOGRAPHER, WASHINGTON. D CY UNITED STATES PATENT OFFICE.,

MOSES E. HALSEY, 0F NEW YORK, N. Y.

CHAIR-FRAME.

Specification of Letters Patent No. 11,725, dated September 26, 1854.

To all whom t may concern,

Be it known that I, Moens E. HALSEY, of the city7 county, and State of New York, have invented certain new and useful Tmprovelnents in the Construction of' Chairs; and l do hereby declare that the following is a full, clear, and exact description of the same, reference being made to the annexed drawing, making a part of this specification, which is a view in perspective of a chair constructed according to my improvements.`

My invention consists in so constructing the back of a chair that I am enabled to get the curves necessary to form an easy rest for the sitter and yet to have the grain of the wood lie in the several directions requisite to insure the greater strength the material is capable of affording. It is thus peculiarly applicable to cottage chairs or to those in which extreme delicacy of form and lightness are desirable features.

I make the posts in the common manner below the seat, but above that I carry them to only about one half the usual height7 as at (a). Here they are secured `by inortise and tenon, or other suitable devices, to two pieces (b) being supplementary posts which cross the upper ends of the first somewhat ohliquely,` and the lower ends of which are set in the back rail of the seat7 as shown. The upper ends are curved inward and connected by a piece (o), forming a. top rail. The. short rail (d) comd pletes the frame ready for the usual cane. The piece (o) acts now as a lever upon which the power is applied at the upper end, the fulcrum being at the point of connection with the post (a), and the resistance being at the lower end. At this part then the wood may be very light, and only sol secured as to prevent those ends from moving forward. The grain of the posts (a) may now run nearly the entire length;

while that of the pieces (o) may run iir the direction of the length in that part of the pieces on Vwhich the greatest strain will comethat is the central portion. This mode of construction effects a great saving of material, since all the parts, curved to the easiest possible form7 can be cut from short plank of one and a half inches in` `combining with each post, and with the back rail of the seat. a supplement-ary post sustained and braced substantially in the manner and for the purpose set forth.

M. E. HALSEY. Witnesses:

S. H. MAYNARD, Gno. R. SHERMAN.