US534065A

US534065A - Base and spring support for chairs

Info

Publication number: US534065A
Authority: US
Publication date: 1895-02-12
Anticipated expiration: 1912-02-12

Description

(No Model.)

J. HARRINGTON.

BASE AND SPRING SUPPORT POR CHAIRS. No. 534,065.-

Patented Feb 12, 1895.

1 WWW/ j@ UNITED STATES YPATENT OFFICE@A `JOHN HARRINGTON, OF YOOVENTRY, ENGLAND, ASSIGNOR TO THE EARRING TON SPRING COMPANY, OF TOLEDO, OHIO.r

BASE AND SPRING SUPPORT FOR CHAIRSl SPECIFICATION forming part of Letters Patent No. 534,065, dated February 12, 1895.

Application filed January 18, 1893. Serial No. 45 8,849. (No model.) A

port for Chairs; and I do hereby declare that ,f

the following is a full, clear, and exact description of the invention, which will enable 1o others skilled in the art to which it'appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form part of this specification.

My invention relates to a base and spring support for chairs, and has for its object to construct a support of this character that can be constructed as an article of manufacture, and sold lto the trade generally.

A further object is to construct an inexpensive base and spring support readily adaptable to the ordinary form of chair seat whereby the same may be conveniently secured thereto, to form a rocker possessing 2 5 more than ordinary ease and comfort to the occupant. s t

In the drawings: Figure l is a side elevatlon in partial section of a chair seat mounted upon my improved base and spring support,

3o the front side being removed to disclose the J manner ofsecuring the spring to the under side of the bottom of the chair seat. Fig. 2 is a perspective View of the base and spring support. Fig. 3 is a side View showing'a modiiied form of spring.

One of the essential features of my invention is the provision for the rocking motion of the seat, similar to the ordinary rocker, with a vertically springing motion under the 4o variations of weight of the occupant of the chair seat. I accomplish these objects by suspendingthe chair seat upon springs in a manner to allow either a rocking or vertical movement of vthe seat.

The base comprises side rails l, and a connecting cross piece, there being casters 2 secured in each end of the rails for convenience in moving the chair.

3 designates leaf springs secured to the base, and connected at their ends with the 5eY vformed in the upper end of said hangers, and 6o through housings 8formed at each end of the spring by rolling the ends of the sanne.

In order to rigidly connect the side rails the proper distance apart, and to allow of securing the springs out of contact with the side rails when depressed, a cross-bar 9 is secured upon the center of each side rail, to which the springs are secured by means of clips 10, the cross bar being of a length to extend beyond the side rails a suflcient'distance to 7o allow of securing the springs thereto outside of vertical alignment therewith.

In the modification shown in Fig. 3 the same arrangement of parts is observed, the construction differing merely in curving the spring at eachend from the center upwardly.

By the construction described, the seat is allowed free motion, either in rocking forward and back, or in a vertically reciprocating movement as the weight of the occupant is 8o placed thereon, as the normal fleXnre of the springs under Weight tends to cause the springs of the rear side to exert the upward lift upon the rear side of the seat as the front side is depressed, and vice versa. 8

The base and spring support is capable of being constructed as an article of man ufacture, and be sold to upholsterers, chairmakers, dac., generally.

In a base and spring support for chairs, the combination of the sills the cross piecethe endsof which project beyond the sills, of the flat springs secured centrally of the same to the projecting ends of the cross piece outside the sills, the hangers secured to the ends of the springs and tho curved arms secured 1:0 the hangers at one end and adapted to be secured to the chair bottom at the other ends, whereby the seat has a rocking motion due to the springs secured centrally of the same to the base, and a vbratory and swinging motion due to the hangers.

In testimony that I claim the foregoing as my own I hereby affix my signature in presence of two witnesses.

JOHN HARRINGTON.

Vitnesses:

WILLIAM WEBSTER, FLOYD R. WEBSTER.v