US451490A

US451490A - Rocking-chair attachment

Info

Publication number: US451490A
Authority: US
Publication date: 1891-05-05
Anticipated expiration: 1908-05-05

Description

(No Model.)

O. KADE. ROCKING CHAIR ATTACHMENT.

No. 451,490. Patented May 5,1891.

4 will!!! UNITED STATES PATENT QFFICE.

CHARLES KADE, OF CHICAGO, ILLINOIS.

ROCKING-CHAIR ATTACHMENT.

SPECIFICATION forming part of Letters Patent No. 451,490, dated May 5, 1891.

Application filed August 20, 1889. Serial No. 321,377. (No model.)

To a whom it may concern:

Be it known that 1, CHARLES KADE, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Rocking-Chair Attachments,- of which the following is a specification.

My invention relates to spring attachments whereby to connect the base and rocking parts of platform rocking-chairs together.

My invention consists in an attachment comprising a flat leaf-spring having one or more bends or turnslying one above the other and in the same vertical plane, a bracket secured to one end of the spring and adapted to be secured to one part of the chair, and a bracket member secured rigidly to the other end of the spring, and consisting, essentially, of an angle-plate having one edge thereof upturned at an angle to the body of the flange to providea hooking edge and a second 1ncm ber comprising a plate having its ends apertured for the passage of screws, whereby to secure it to the chair and its middle portion, between its ends, beveled outwardly to engage the edge of the other member.

In the drawings, Figure l. is a side elevation of the attachmentapplied to the base and rocker with the parts in position for use. Fig. 2 is a section through the last turn of the spring and through the members of the detachable bracket. Figs. 3 and t show the engaging members of the detachable bracket separately.

In the drawings, A represents the base, and B the rocker, of the platform rocking-chair.

0 represents the spring proper, which consists of anumber of return-bends c, the bends being formed flatwise of the strip, which may be of band-steel. I prefer to form the entire spring from a single strip of this band-steel, the bends following curved lines in order to prevent fracture of the metal and to impart a high degree of resiliency. To one of the ends of these springs is rigidly secured a bracket, the vertical member whereof is marked D, having flanges apertured for the passage of the securing-screws d. The horizontal member maybe riveted to the last turn of the spring, as shown in Fig. 1. The other end of the spring will be detachably connected with the chair by means of a bracket consisting of two members E and F. The member E is a casting having flat ends provided with screwapertur,es to secure it to the chair, and its middle portion has its lower edge cut away 011 a re'entrant angle to provide an overhanging lip c. The other member of the bracket (marked F) is an angle-bar having the margin of one of its flanges upturned on an angle corresponding to that of the overhanging lip e, and thus is provided a hooking edge f, which is adapted to engage the lip 6 when the spring is distended for the purpose of connecting the parts, and'in use the resiliency of the spring will insure the retention of the hooking edge f beneath the lip, and thus the parts will be locked together.

In order to prevent the shifting of the hooking edge lengthwise of the lip, I provide-in this overhanging lip a notch or seat a, and on the hooking edge f I provide an upwardlyprojecting spur or triangularly-pointedlugf, which is adapted to enter the seat 6, thereby centering the parts and preventing their longitudinal movement with relation to each other.

For purpose of ready attachment and detachment the spring may be flexed slightly beyond its normal movement when in use on a chair, and when released the resiliency of the spring will draw the booking edge firmly to its seat on the under surface of the lip. This form of attachmentis capable, therefore, of complete application to a chair-frame and for ready detachment when the chair is to be shipped or taken apart for any purpose. Of course the separable part of thebracket might be applied to the rocker instead of the base rail, and both ends of the spring might be fitted with this separable bracket.

An advantage of the present construction is that the parts may be readily separated, their engagement being such that they are not wedged together in use, so as to become difficult to separate. The bearing of the parts is extended in the line of the rocking strain, and thereby the brackets are held against movement on each other, while the spring only is flexed. By this construction all the advantages of a rigid attnchment of the ends oi". the spring are secured, while at the same time the feature of detachahility is secured.

, I claim 1. A rocking-chair attachment comprising a spring formed from a flat strip of resilient metal havinga plurality of bends lying in the same vertical plane, in combination with attaching-brackets to which the ends of the spring are rigidly secured, one of said brackets consisting of two parts or members, one adapted to be secured to one of the parts of the chair and provided with an overhanging lip and the other rigidly seen red to the spring and provided with a hooking edge adapted to engage said lip,substantially as described.

2. A rocking-chair z'ittachment comprising to engage the lip, substantially as described. 0

CHARLES KADE. Witnesses:

Fnnonnrou (J. Goonwm, i. U. LIN'rmc'Liu.