US927898A - Rocker for chairs. - Google Patents

Description

G. M. STRATTON.

ROCKER FOR CHAIRS.

APPLIUATION FILED MAY 2 a, 1908.

Patented July 13,1909.

- IN V E N TOR eorg'e J1. ,JZz-a tion/ W/T/VESSES A TTOHNE Y S Cit GEORGE MILO STRATTON, OF OARTI-IAGE, SOUTH DAKOTA.

ROCKER FOR CHAIRS.

Specification of Letters Patent.

Application filed May 28, 1908.

Patented July 13, 1909.

Serial No. 435,397.

To all whom it may concern:

Be it kn own that I, GEORGE M. S'rRA'rTON, a citizen of the United States, and a resident of Carthage, in the county of Miner and State of South Dakota, have invented a new and Improved Rocker for Chairs, of which the following is a full, clear, and exact description. V

The purpose of this invention is to provide hollow rockers of sheet metal for cl'iairs, which are light, strong, shapely, and can be produced at a low cost. The invention consists in the novel con.- struction of chair rockers and their combination with the legs of a chair, as is hereafter described and defined in the appended claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure l is a perspective view of a chair, and of the novel rockers secured upon the legs of the chair; Fig. 2 is an enlarged partly sectional side view of the improved rocker and of lower portions of two chair legs whereon the rocker is secured; Fig. 3 is an enlarged longitudinal sectional view of a chair leg, and a transverse sectional. View of the improved rocker thereon, substantially on the line 3-3 in Fig. 2 Fig. 4 is a transverse sectional view of the rocker substantially on the line 4-4 in Fig. 2, and Fig. 5 is a transverse sectional view of the same, substantially on the line 5-5 in Fig. 2.

The im roved chair rocker is cut from and formed 0 sheet metal, preferably of sheet iron that will stand bending into form without fracture. Preferably the rocker is formed of a single piece of the material specifled, and as shown in Figs. 3, 4 and 5, a planchet thereof having a suitable len th and width, is provided that is bent into form as follows: At equal distances from the side edges of the planchet the material is bent, producing similar corners a, that extend throughout the length of said planchet parallel with each other. The material 10, that is between the angular corners a forms the tread or working face of the rocker, and in a completed rocker said face is given proper curvature, as shown in Figs. 1 and 2. The remaining portions 11 of the planchet, forming the side walls of the rocker, are similarly bent so as to give them ogee form in crosssection, as shown in Figs. 3, 4 and 5, which converges the upper edges thereof, and as shown in Fig. 4, said upper marginal portions 0 are mainly bent toward each other, so that the edges thereof impinge and close the top surface of the rocker body, and the ends of said body may be closed by bending end walls d on the side walls-11, as shown in Figs. 1, 3, 4 and 5. It is to be understood that a similar pair of rockers of the described construction are provided for the legs of a chair, to be disposed at opposite sides of the chair as usual, and a feature of the invention consists of novel means for securing the duplicate rockers upon the lower portions of the chair legs as illustrated in Fig. 1.

The chair A may be of any preferred construction, and its legs A be formed as shown in Fig. 1, or have a diflerent shape, it only being necessary that their lower ends have proper dimensions for reception of the rockers that have been described, and as the attaching means for the pair of rockers is the same for each one, a description for securing one rocker will Sllll'llOG for both of them. At suitable points on the upper side of each of the rockers that are curved to correspond with the lower surfaces thereof, two pairs of flanges c, f, are respectively formed for the engagement with the lower ends of the legs A, at the sides of a chair A.

As shown in Figs. 2 and 5, the flanges e that are oppositely disposed at a proper distance from the rear ends of the rockers for connection with the rear legs A of the chair A, are both upwardly extended from the inwardly bent portions 0 that form the top wall of the rockers and are fastened together by two spaced rivets e, that are secured in alined perforations in said flanges. The flanges f are disposed in pairs oppositely and near the front ends of the rockers, and preferably are similar in form to the flanges 6, said flanges f being secured together by two spaced rivets f. The lower ends of the legs A at each side of the chair A which are to be connected with the rockers that have been previously described, are slotted upwardly, as shown at g in Fig. 1. Between the pair of spaced rivets that connect each pair of flanges e and f together, upwardly extended tongues e and f are respectively formed on said flanges, and as shown for one pair of tongues and a chair leg in Fig. 3, the pair of lapped tongues c therein shown, are closely fitted into the longitudinal slot 9 in theleg, and are therein secured by a cross-pin c that is driven through alined perforations in the leg and tongues. In a like manner tongues are formed on the flanges f between the spaced rivets f which project upward from said flanges and are secured in the longitudinal slot g in the front leg A by means of a transverse pin f It will be noted in Fig. 3 that the lower end of the slot 9 in the leg A is widened somewhat, to accommodate the slope given to the flanges e where they converge to permit the formation of the tongues c thereon, this being the case with the tongues on bothrockers and all the legs engaged therewith, and it should be explained that this wedgelike formation of the tongues and flanges renders the connection of the rockers substantial and prevents rattling sidewise, as the tendency of weight sustained by the rockers will be to spread apart the paired flanges e and f slightly, and adapt them to take up any wear that might occur between said parts and the sides of the slots in the legs. The exterior surl'ace of the rockers may be rendered ornamental by coating with brass or nickel plating, or may be enameled to conform in color with that ol' the woodwork of the chair.

In the process of manufacturing the improved rockers, it may be found advantageous to divide each rocker longitudinally into two half sections, simply by slotting the tread or lower wall a throughout its length at the transverse center thereof, and securing the two hall sections together by any prel'erred means; hence I do not desire to be limited to the exact details of manufacture hereinbelore set forth, claiming the right to vary therefrom within the scope of the subjoined claims.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. The combination with the chair, of rockers formed of sheet material bent to form a longitudinally arched bottom wall, and converging sides, said sides being provided at corresponding points with flanges, the legs being slotted to receive the flanges, the edges of the slot being arranged for en gaging the converging sides of the rocker.

2. The combination with a chair having four depending legs thereon, said legs having longitudinal slots therein, 01' two similar hollow chair rockers each formed of sheet metal, having an inverted arched tread surface, ogee shaped side walls, paired flanges on the meeting upper edges of said side walls, means for securing the flanges together in pairs, tongues formed on the flanges at their cen ters, said tongues in pairs occupying the slots in respective legs, and means for securing the tongues in said slots.

3. The combination with a chair having slotted legs, of chair rockers formed of sheet material having an arched tread surface, ogee shaped side walls, paired flanges on the meeting upper edges of the side walls, tongues on the flanges at their centers, said tongues engaging the slots in the respective legs, and means for securing the tongues in the slots.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GEORGE MILO STRATTON.

itnesses JOHN PUsEY, F. A. NYE.

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