US1241544A - Folding chair. - Google Patents

Description

l. A. OSTMAN.

FOLDING CHAIR.

APPLICATION FILED FEB. t. 1911 Patented Oct. 2, 1917.

2 SHEETS-SHEET I.

I V l TNESSES INVENTOR.

I; A TTORNL y J. A. OSTMAN.

FOLDING CHAIR.

APPLICATION FI LED FEB. 1, I917. 1,241,544. Patented 0% 2,1917.

2 SHEETS-SHEET 2-.

INVENTOR.

A TTORNLY lV/TNESSES:

% y a J JOHN ALBIN OSTMAN', OF TECHNY, ILLINOIS.

FOLDING CHAIR.

Specification of Letters Iatent.

Patented Oct. 2, 1917.

Application filed February 1, 1917. Serial No. 145,896.

T 0 all whom it may concern:

Be it known that I, J OHN ALBIN OSTMAN, a subject of the King of Sweden, residing at Techny, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Folding Chairs, of which the following is a specification.

This invention relates to improvements in folding chains. One object is to provide a chair having a seat that is adjustable at either end. A further object is to provide a chair of the folding type that in operative position is strong and substantial. A further object is to provide a chair of'this type that is simple in construction and o eration and cheap to manufacture. With t e foregoing and other objects in view the invention consists in the combination and arrangement of parts to be hereinafter fully described in this specification pointed out in the appended claims and illustrated in the accompanying drawings which form a part of the speci ation and in which- Figure 1 is a side elevation of my improved chair in operative position.

Fig. 2 is a front view of the same with a portion ofthe back broken away to afl'ord a better illustration.

Fig. 3 is a plan view of the chair in folded positlon.

Fig. .4 tion.

Figs. 5 and 6 are enlarged fragmentary views showing the means employed for adjustably supporting opposite ends of the seat.

Like reference characters denote corresponding parts throughout the several views.

The reference numeral 1 denotes the rigid bars that form the main portion of the framework of the chair, the upper ends of said bars forming the frame of the back of the chair and the lower ends forming two of the legs of the chair. To the bars 1 the short bars 2 are connected by pivot bolts 3 forming legs for the chair, sald legs being connected to the seat 4 by the bolts 5 slidably disposed in the slotted portions 6 of said seat which bolts, in the operative position of the seat may form a fulcrum for the same to permit it to be tilted. Chair seats of ordinary construction are hinged or fulcrumed at their inner ends which ends, unlike my form of seat, cannot be raised at that oint. To the front or free end of the seat Isecure the ears 7, one at each side of is a side elevation in folded posithe seat, to which ears the cross arms 8 are pivotally connected, said arms being connected by pivot bolt 9 and pivotally connected to cars 10 which are slidably connected to the bars 1 by bolts 11 which bolts slidably engage the longitudinally slotted portions 12 of said bars 1.

The seats 4 at their inner ends are connected by pivot joints 13, slidably disposed in the slotted portions 6, with the straps 14 which are slidably connected by pins 15 with a longitudinally slotted portion 16 of the said bars 1. It is obvious that movement of the straps 14 along the bars 1 will tilt the seat 4 from its inner end upon the bolts 5 as fulcrums. The bars 2 are provided with ears 17 to which the ends of cross arms 18 are pivotally secured, said arms being connected by pivot pin 19 and also connected at their upper ends to ears 20 secured to the bars 1. A sectional hinged brace 21 has its ends pivoted to ears 22 of the arms 1 to normally keep the bars 1, 1 braced firmly when the chair is in operative position. In Figs. 1 and 2 the chair is shown assembled. To fold it the seat 4 is moved about the pivot joints 13 into engagement with the bars 1, 1, the cross arms 8 are drawn longitudinally of the bars 1, 1 into the positions shown in Figs. 3 and 4, the arms 2, 2 are moved into a position almost parallel with the said arms 1 thus moving the arms 18 into a position almost parallel to said arms 1, 1 and the chair is folded. The chair is reassembled by reversing the operation just described.

What is claimed is 1. In a folding chair, two sets of crossed pivoted bars, each set comprising a pair of parallel members and one of said sets being formed with longitudinally extending slots; a longitudinally slotted seat, pivot bolts connecting one pair of said bars with the slotted portions of said seat, brace arms connecting one end of said seat with the longitudinally slotted portion of the other set of bars, straps slidably and adjustably carried by the said slotted bars and pivotally supporting the inner or adjacent end of said seat and means for normally retainin said sets of crossed pivoted bars in assemb ed or extended relation.

2. In a folding chair, two sets of crossed 'pivoted bars, each set comprising a pair of parallel members and one of said slots being formed with longitudinally extending slots; a longitudinally slotted seat, pivot bolts connecting one pair of the aforesaid bars with the slotted portions of said seat to form a fulcrum for said last named member, pivotally connected cross arms connecting one end of said seat with the longitudinally slotted portions of the other set of bars, straps slidably and adjustably carried by the said slotted bars and pivotally supporting the inner or adjacent end of said seat, brace arms pivoted together and connecting the two sets of crossed pivoted bars and a sectional hinged spacer member connecting the component members of one of said sets of bars.

In testimony that I claim the foregoing as 15 my own I have hereto 'afiixed my signature in the presence of two subscribing witnesses.

JOHN ALBIN OSTMAN.

Witnesses:

Trros. WHITFIELD, JOHN JOSEPH KENNY.

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