US345678A

US345678A - Base-rocking chair

Info

Publication number: US345678A
Authority: US
Publication date: 1886-07-20
Anticipated expiration: 1903-07-20

Description

UNITED STATES PATENT OEEicE.

JOHN FLINN, VOF CLEVELAND, OHIO.

BASE-ROCKING CHAIR.

srncrricarion .ra-amg part of Leners Patent 10.345,678, dated July zo, 188e.

Application filed December 22, 1884. Renewed Deecmberli), 1885. Serial No. 1186.171. v(No model.)

To all whom it may concern:

Beit known that I, JOHN FLINN, a citizen of the United States, residing at Cleveland, county of Cuyahoga, and State of Ohio, have invented certain new and useful Improvements in Base-Rocker Springs; and I do hereby declare the following to be a description ofthe same, and of the manner of constructing and usingr the invention, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it appertai ns to construct and use the same, reference being had to the-accompanying drawings, forming a part of the specification, the principle of the invention being herein efqilained7 and the best inode in which I have contem1 plated applying that principle so as to distinguish it from other inventions.

My invention is an improvement in springs used in base-rockers. f

In the drawings, Figure l isa side elevation ofthe spring, shown Aas in operative attachment. Fig. 2 is a top view of the spring.

A is the coil-spring, formed of any suitable wire,of suitable size for stiffness and strength, and containing any desired number of coils, according to the size and description of the base-rocker. The extension of the wire at each end of the coil is bent at right angles across the diameter of -the coil, as in section a, then bent again at right anglesin the longitudinal plane' of the coil and forming the shanks ca, and then bent again in an acute angle into arms a?, both in one and the same direction and in the horizontal plane of the shanks a. Said arms a2 are of equal length, andtheir ends are rounded into the open eye B. Said eye is for the accommodation of the checkstring b, which string serves to'hold the rocker from rocking back too far. The arms a2 are elastic, so that the check of string b may not be too abrupt. Spring A thus formed is applicableto either side of a chair or other similar article indiscriminately.

I/Vhen the spring is to be attached to the base E and the rocker D, it isplaced vertically along the inside faces of said base andv rocker, as the latter rests normally upon the former, and fastened to them, respectively, by

the screws C and C', screw C being located in the angle formed by shanks a and arms of", and screw C located on the opposite side of Shanks a', and near the angle formed by said shank as it bends across the diameter of the coil at o. The arms a'l both project forwardly. The said Shanks and arms are of sufficient firmness to prevent the rockers from swerving sidewise from the normal line of the base.

It will be seen that my spring as described is very simple in construction and inexpensive in cost; also, it is readily removable from the rocker and base by a simple outward pressure of arm a2, which lifts it clear from the attaching -screws; hence, if a spring proves too weak or too stiff, or has any other defect, or meets with any breakage, it can be detached in a moment, and another can be in the same easy way put in its place; and as the strain in a rocking-chair is normally backward, the forwardly -located check string b' y prevents all excess of such strain.

Said check device b may be made of any suitable material, but is preferably a fibrous cord; hence W'hat I claim is- 1. The combination, with a base, E, and a. rocker, D, of acoil-spring, A, having two end arms, a, respectively, connected with said base and rocker, and a device, b, connecting the extremities of said arms together, substantially as set forth.

2. Thecombination,withthebase-rockerand coil-spring A, having the elastic arms a2,in tegral with itself, of the check-string b, fastened in the eyes B of said arms, substantially as set forth.

3. The combination, with base E and rocker D, provided each with fastenings C and C', of coil-spring A, having shanks a', and arms at, angular to the latter, each shank having fastenings C and C', respectively, on opposite sides thereof, substantially as set forth.

In testimony that I claim the foregoing to be my invention I have hereunto set my hand this 18th day of December, A. D. 1884.

' JOHN FLINN. IVitnesses:

Taos. B. HALL, NOAH S. AMsTUrZ.