US940582A

US940582A - Folding chair.

Info

Publication number: US940582A
Application number: US37026407A
Authority: US
Inventors: Frank M Burrowes
Original assignee: E T BURROWES Co
Current assignee: E T BURROWES Co
Priority date: 1907-04-25
Filing date: 1907-04-25
Publication date: 1909-11-16
Anticipated expiration: 1926-11-16

Description

F. M. BURROWES.

FOLDING CHAIR.

APPLIUATION Hmm APB. 25, 1907. l

940,582, Patented NOV. 16, 1909.

2 SHEETS-SHEET 1.

P. M. BURRO'WES.

FOLDING CHAIR. APPLICATION FILED APR.25. 1907.

QU of wm M w mm wz fr h Llu na P 7. L #ce .y M,.w, /Jl m 0 n /lf//W 2. y w W am UNITED sTATEs PATENT loEEieE.

i FRANK M. BURROWES, 0F PORTLAND, MAINE, ASSIGNOR TO THE E. T. BU'RROWES COM- PANY, 0F PORTLAND, MAINE, A CORPORATION 0F MAINE.

FOLDING CHAIR.

Patented Nov. 16, 1909.

Application led April 25, 1907'. Serial No. 370,264.

To all whom it may concern:

Be it known that I, FRANK M. Enmiendas, a citizen of the United States, residing at Portland, in the county of Cumberland and State of Maine, haver invented certain new and useful Improvements in Folding Chairs, of which the following is a specification, reference heilig had therein to the accompanying drawing.

This invention relates to an improvement in folding chairs and the object of the invention is the provision of a chair of this type of simple and durable construction, the

component parts of which are so fashioned as to permit the chair when not in use to be folded in a compact form.

A further object of the invention is the provision of a novel chair seat of such a construction that it will-not be subject to injury from shrinkage or swelling duc, to atmospheric conditions.

Other objects of the invention will be ap; parent from the detailed description herein after, when read in connection with the accompanying drawings forming a part hereof, wherein a preferable embodiment of my invention is shown and wherein like letters of reference refer to similar parts in the several views.

In the drawings, Figure l isa perspective view of my improved chair in its open position, Fig. 2 is a perspective view of the chair in its closed position, Fig. 3 is a longitudinal section of the chair in its open position, Fig. 4 is a detail view showing a portion of one seat frame, side bars, and the seat,r Fig. 5 is a detail sectional view on line 5 5 of Fig. 3, Fig. 6 is a sectional view on line 6-6 of Fig. 3, and Fig. 7 is a sectional View on line 7 7 of Fig. 3. 'i

Referring now more particularly to the drawings, A, A designates side bars, the lower ends of which constitute the front legs of the chair and the upperends of which constitute the side vieces of the back thereof. The inner sides o the side bars A, A .are provided with grooves' a therein, the lower ends of lwhich terminate at a point substantially centrally of said bar.

B designates a plate constituting aback support which rigidly connects the upper ends of the side bars A, A and B- designates y neath the longitudinal grooves a formed therein. p

C, l designate the rear legs of the chair, which are pivotallv mounted between the lower ends of the side bars A, A and are designed when the chair is in its folded position tolie within the planes ofthe upper andA lower edges of said side bars. legs C, C arerigidly connected at their lower ends by a rung cand at their upper ends by a rung c', to which the forward end of the seat frame is pivoted as will be hereinafter more particularly set forth. The legs C, C are pivoted between the side bars A, A by means of a rung or cross bar c2 which is rigidly secured therein and the ends of which project beyond the sides thereof and loosely engage openings a formed in the inner sides of said cross bars .and extending partially therethrough. The side bars C, C may if desired be further stremgfthened by securing therebetween crossed brace bars c, The upper ends of the rear legs C', C terminate in reduced portions c4 between which is pivoted the forward .portion of the scat frame. I

The seat frame comprises the side bars D, D the forward ends of which are provided wit-h apertures d which loosely embrace the rung or cross bar c which rigidly connects the upper ends of the rear legs C, C of the chair and the rear ends of which are rigidly connected by a suitable rung or cross bar cl, the extremities of which project beyond'side bars D, D and into the longitudinal grooves a formed in the inner side of the side bars A, A, the extremities of such cross bar or rung being of'a size to slide freelyin said groove. The forward ends of the side bars D, D of the seatoframe are provided adjacent their connection with the upper ends of the rear legs C, C with recessed portions d2 which terminate in inclined shoulders d3 which are designed to abut the' edges of the legs C, -C when the cha-ir is open and the seat frame is in its lowered position.r

The I The side bars D, D of the seat frame are provided. on their interior with ribs d ex-` tending longitudinally thereof, the upper surfaces of said ribs being Iconsiderably wider than the lower surfaces thereof so that the weight borne by the seat which is designed to be supported upon the upper surfaces of said ribs will be borne by the side bars D, D and not by said ribs. E designates the seat of my improved chair, which is preferably of wood and is provided along its outer edges with recessed portions e. which are designed to receive the ribs d* on the inner sides of the side bars D, D of the seat frame. The forward` portion of the seat is rigidly secured to the side bars D, D of the seat frame by means of screws e or other suitable fastening means which pass through the ribs' on the side bars and engage the seat. The seat is not otherwise secured. to the seat frame but is provided on its under side at various points along the vouter edges thereof with metallic plates e?, the outer ends of which are designed to underlie and lie in close proximity to the lower surfaces of the ribs d4. From .this construction, it will be apparent that as the s eat is rigidly connected, at one point only with the seat frame, it is f ree to accommodate-itself to any'slight swelling or shrinkage due to atmospheric conditlons, which would otherwise Acause the same to split. While the seat is free to accommodate itself in this manner it will be seen that by -reason of the plates e2, the same will always be maintained perfectly -1 horizontal. The underside of the seat E is provided with a groove e3 extendingthereacross to aecommodate the rung 0 which connects the upper ends of the legs C, C and passes through the side bars D, D vof the seat frame. This groove is made sufficiently wide to prevent the rung c from interfering with any expansion or contraction of the seat. Secured to the forward edgev of the seat E is a bai` or plate E the ends of which are arranged to overlie the. forward ends of the side bars D, D of the seat frame, said bar or plate be- I in similar in width and appearance to the si e bars D, D. The rear ends of the side bars D, D"of the seat frame are reduced .in thickness as -at d5 so that when the chair is folded and the ends of the rung or cross barfront edges of the seat, these edgesbeing concealed when thel seat issecured in position by the bar E and the side bars D, D of the seat frame. The rear edge of the covering is brought down over the rear edge of the seat E and secured wit-hin a groove formed therein to present a finished appearance, this edge of the chair seat being exposed when the chair is in its open posit-ion. From this construction it will be apparent that owing to the manner in which the seat secured in the seat frame, should the covering become soiled or worn, 'the seat may be readily removed and a new covering secured thereto.

From the above description, it will be apparent that the chair may be readily folded and that when so folded all of the parts thereof will lic between the planes of the upper and lower edges of the side bars A, A.

- I do not desire to limit myself to 'the precise form and construction shown in the drawings, as it is obvious that many minor changes might be made thereto without departing from the spirit of the invention.

I claim: 1. In a chair, a pair of parallel back bars, the lower ends of which are extended to form the ,front legs of the chair and the back bars and at one side of the grooves therein, said back support being positioned between the planes ofthe upper and lower surfaces ofthe back bars and a seat pivotally secured at its forward portion to the upper ends of said rear legs and provided at its rear end with proJectioiis engagin the grooves in the back bars, the rear portion of said seat being cut away to permit the same.

to clear the rigid back support when it is moved to its folded position. j:

2. In a chair, a pair of parallel back bars;

the-lower portions of which are extended to form the .front legs of the chair and the upper portions of which are provided on their inner sides with longitudinally extendmg grooves, a fixed back support connecting the upper portions of said back 4bars and underlying the grooves therein,tl1e said back support being -positioned between the planes of the upper and lower surfaces of the back bars, rear legs pivotally supported between the lower ends of said back bars and ,adapted when in folded position to lie wholly Within the plane of the upper and lower surfaces of the back bars, seat supporting side bars pivotally connected at their forward ends to the upper ends of said rear legs and provided at their rear ends With -projeotions engaging the grooves in the back bars, the forward portions of said seat supporting side bars being of substantially the saine thickness as the baekbars and the rear ends of said side bars being reduced in thickness so as to clear the fixed back support and overlie the saine when the chair is in its folded position. l 10 In testimony whereof I affix my signature in presence'of two Witnesses.

g FRANK M'. BURRQWES. Witnesses:

HARRY H. RUSSELL, STEPHEN W.v CABLE.