US2843188A

US2843188A - Folding chair

Info

Publication number: US2843188A
Application number: US661916A
Authority: US
Inventors: Gerald V Spencer
Original assignee: American Seating Co
Current assignee: American Seating Co
Priority date: 1957-05-27
Filing date: 1957-05-27
Publication date: 1958-07-15
Anticipated expiration: 1975-07-15

Description

G. v. SPENCER FOLDING CHAIR Filed may 27. 1957 July 15, 1958 INVENTOR Gerald Jpezlacr syfi f. fiM/M ATTORNEY United States Patent 2,843,188 FOLDING CHAIR Gerald V. Spencer, Grand Rapids, Mich., assignor to American Seating Company, Grand Rapids, Mich, a corporation of New Jersey Application May 27, 1957, Serial No. 661,916 3 Claims. (Ci. 155 142) The present invention relates to folding chairs.

The primary objects of the invention are to provide a steel folding chair having a novel arrangement of parts whereby the chair seat is non-jackknifing, that is to say a folding chair in which the seat will not collapse if stood upon or used in other ways than its primary intended use as a chair; to provide such a chair which folds naturally, by tipping the chair slightly forward and then lifting the seat at its front edge; and in general to provide such a folding chair which is sturdy in construction, reasonably economical in manufacture, and neat in appearance.

An illustrative embodiment of the invention is shown in the accompanying drawings, wherein:

Figure 1 is a side elevational view of a folding chair constructed according to the invention, in unfolded condition for use;

Figure 2 is a front elevational view of the same;

Figure 3 is a side elevational view of the chair in folded condition for transport or storage; and

Figure 4- is an enlarged fragmentary sectional view of parts thereof taken on line 4-4 of Figure 2 and showing the parts in semi-folded positions.

Referring now in detail to these drawings, the chair there shown generally comprises a front frame of tubular metal bent to form spaced front legs connected at their upper ends by a back support 11 to which is secured a back panel 12. A horizontal front tie-bar 13 in the form of a metal rod connects the front legs at the approximate seat level of the chair, and a horizontal strengthening rod or strut 14 connects the front legs near the lower ends thereof. The spaced, tubular metal rear legs 15 of the chair are connected by a horizontal upper rear tie-bar 16 at the approximate seat level of the chair and by a horizontal lower rear tie-bar 17 spaced a substantial distance below the upper rear tie-bar 16, said

tiebars

16, 17 being in the form of metal rods. The rear legs 15 terminate at their upper ends only slightly above the upper rear tie-bar 16.

The front legs 10 and rear legs 15 are connected by curved upper links 1-3 having their rear ends pivotally mounted on the upper rear tie-bar 16 and having their front ends pivotally connected to the front legs 10 by rivets 19 located above the front tie-bar 13, and the front and rear legs are also connected by lower links 20 having their rear ends pivotally mounted on the lower rear tiebar 17 and having their front ends pivotally mounted on the front tie-bar 13.

The chair seat 21 is pivotally mounted in the rear on the upper rear tie-bar 16, and is adapted for support at its middle on the front tie-bar 13 in the unfolded, use condition of the chair seen in Figures 1 and 2. Auxiliary links 22 have their front ends pivotally mounted on the front tie-bar 13 and have their rear ends pivotally connected by rivets 23 to opposite sides of the seat 21 at points between the front tie-bar 13 and the upper rear tie-bar 16 in the unfolded condition of the chair.

The chair is folded from its use condition seen in Figure 1 to its non-use condition seen in Figure 3 by tipping the chair slightly forwardly and lifting the seat at its front edge. During this folding movement the auxiliary links 22 guide the seat 21 to its folded position between and substantially parallel to the front legs 10, and the upper links 18 and lower links 20 guide the rear legs 15 to folded positions alongside the front legs 10. When the chair is unfolded the

links

18, 20 and 22 operate rveersely to move the parts to their unfolded positions.

It will be seen that when the chair is in its unfolded condition, the forward part of the seat 21 is supported on the front tie-bar 13 and thus is supported by the front legs 10. The rearward part of the seat 21, being directly connected to the upper rear tie-bar 16 is positively supported by the rear legs 15 so that there is no possibility of the chairs jackknifing or collapsing even if the seat should be stood upon in the rear.

While but one specific embodiment of the invention has been herein shown and described it will be understood that numerous details may be altered or omitted without departing from the spirit of the invention as defined by the following claims.

I claim:

1. In a folding chair: spaced front legs; spaced rear legs terminating at their upper ends at the approximate seat level of the chair; a seat having its rear corners pivot ally connected to the rear legs near said rear legs upper ends and adapted for support on the front legs in the unfolded condition of the chair; upper and lower links connecting the rear legs and the front legs whereby said legs are interrelatively movable between an unfolded position of use and a folded position with the rear legs lying alongside the front legs; and auxiliary links connecting the front legs and the seat whereby lifting of the seat at its front edge effects folding movement of the legs and lowering of the seat at its front edge effects unfolding movement of the legs.

2. In a folding chair: spaced front legs; spaced rear legs terminating at their upper ends at the approximate seat level of the chair; a seat having its rear corners pivotally connected to the rear legs near said rear legs upper ends; means on the front legs for supporting the forward part of the seat in the unfolded condition of the chair; upper links having their rear ends pivotally mounted on the rear legs near said rear legs upper ends and having their front ends pivotally connected to the front legs above the seat level of the chair; lower links having their rear ends pivotally mounted on the rear legs a substantial distance below said rear legs upper ends and having their front ends pivotally mounted on the front legs at the approximate seat level of the chair; and auxiliary links having their front ends pivotally mounted on the front legs and having their rear ends pivotally connected to opposite sides of the seat at points between the front legs and the rear legs in the unfolded condition of the chair.

3. In a folding chair: spaced front legs connected by a horizontal front tie-bar at the approximate seat level of the chair; spaced rear legs connected by a horizontal upper rear tie-bar at the approximate seat level of the chair and by a horizontal lower rear tie-bar a substantial distance below said upper rear tie-bar, said rear legs terminating at their upper ends only slightly above the upper rear tie-bar; a seat pivotally mounted on the upper rear tie-bar and adapted for support by the front tie-bar in the unfolded condition of the chair; upper links having rear ends pivotally mounted on the upper rear tiebar and having their front ends pivotally connected to the front legs above the front tie-bar; lower links having their rear ends pivotally mounted on the lower rear tie- 4 bar and having their front ends pivotally mounted on the References Cited in the file of this patent front tie-bar; and auxiliary links having their front ends UNITED STATES PATENTS pivotally mounted on the front tie-bar and having their rear ends pivotally connected to opposite sides of the 2177186 Nordmark 1939 seat at points between the front tie bar and the upper 5 2'238817 Morgan 1941 rear tie-bar in the unfolded condition of the chair.