US1609689A

US1609689A - Folding chair

Info

Publication number: US1609689A
Application number: US743293A
Authority: US
Inventors: George H Bugenhagen
Original assignee: Individual
Current assignee: Individual
Priority date: 1924-10-13
Filing date: 1924-10-13
Publication date: 1926-12-07
Anticipated expiration: 1943-12-07

Description

1 Dec. 7 1926.

. 1,609,689 G. H'. BUGENHAGEN.

FOLDING CHAIR Fiied O t. 13. 1924 INVENTOR a ewu j/mw BY v r I x W Patented Dec. 7, 1926.

UNITED STATES GEORGE H. BUGENHAGEN, OF MINOT, NORTH DAKOTA.

FOLDING CHAIR.

Application filed October 13, 1924. Serial No. 743 293.

The object of this invention is to provide an improved construction for a folding chair.

A further object of this invention is to provide in a folding chair a full-width seat that is easily and conveniently foldable.

A further object of this invention is to provide a folding chair of stable character, that will not tip forward accidentally, that folds perfectly flat and is easily transported and set up.

A further object of this invention is to provide an improved construction for a folding chair in which the lower end of the back serves as a stop to limit movement ofthe seat in one direction and is movable through an are relative thereto.

A further object of this invention is to provide a hat-rack with straps on a folding chair, said straps also having another function in the construction and operation or use of the chair.

A further object of this invention is to provide a folding chair with transverse metal ties, some of said ties also serving as pivots for connecting certain movable members of the bhair for relative oscillation.

- My invention consists in the construction,

arrangement and combination of elements hereinafter set forth, 'pointed out in the claims and illustrated by the accompanying drawing, in which Figure 1 is a perspective of my improved chair in position for use, dotted lines indicating a partial elevation of the seat and corelating position of brace legs. Figure 2 is a longitudinal section of the chair in folded position. Figure 3 is a detail section show-.

ing the manner of pivoting the seat to the main legs, on an enlarged scale. Figure 4: is a detail front elevation of parts of the chair showing the manner of connectin the seat and legs and engagement ofthe back with the seat to limit oscillation thereof.

In the construction of the device as shown, the numerals. 10, 11 designate side bars which combine the functions of legs and side frames for the seat and back of a chair. The bars 10, 11 are arranged in substantially parallelplanes and are spaced apart and connected by a metal pivot rod 12 substantially at their centers and at right angles thereto, a tie rod 13 near their upper ends and at right angles thereto, a tie rod 14 parallel to and spaced from the rod 13, and a rod 15 parallel to the pivot rod 12 and between said pivot rod and the lower ends of said bars. The pivot rod and tie rods are upset or riveted at their ends outside the bars 10, 11 and serve rigidly to to the pivot rod than to said upper ends.

The brace legs 18, 19 preferably are of less length than the portions of the side bars 10,

11 between the pivotal connections thereof and the lower ends of said bars.

Rods

20, 21 connect the brace legs below the'pivotal connection of said legs with the side bars 1O, 11 and flexible straps or stays 22, 23, are arranged side by side and spaced apart and connect the rods 15 and 21. The straps or stays 22, 23 have two functions viz, to limit movement of the brace legs in one direction through an are relative to the side bars and to serve as a support or rack for hats and other articles when the chair is extended for use. A seat is formed of a substantially square frame 2 1 and slats 25 in said frame. The slats 26 are of less thickness than the frame and are placed nearer the top than the bottom thereof; and said seat frame is pivoted on the pivot rod 12 and fills the space between the side bars 10. 11; said rod extending across the frame wholly at one side of the slats 25. The rod 12 is located slightly to the rear of the transverse median line of the seat in order that any weight w supported by the seat shall be substantially centered on said rod; and the forward margin of the seat is located in a vertical plane slightly to the rear of the vertical plane of the foremost margins of the lower ends of the side bars 10, 11 when the chair is extended for use as shown in Figure 1. Links or straps 26., 27 are pivoted at their ends respectively to the sides of the rear portion of the seat frame 24'and to the brace legs 18, 19 between the centers and upper ends of said brace legs and, when the chair is extended for use, said links are horizontal and parallel with said frame. The rear corners of the frame 2 1 are notched to accommodate the brace legs. A back for the chair is formed of a substantially square frame 28 and slats :29 carried .thereby. The upper. most bar of the frame 28 fits between the bars .10, 11 and is pivoted on the rod .14, while the stiles of the frame extend below "the lowermost bar thereofand are adapted to engage the rear portion of the frame 24: of the seat and limit oscillation of said seat in one direction when the chair is extended for use. Links 30, 31 are pivotally connected 'at their ends respectively to the brace le s, near the pivots'of said legs, and to the stiles of the back frame above the lower ends of said stiles whereby the back is held in a given position relative to the brace legs when the chair is extended for use,

Owing to the construction set forth, the seat may be raised as shown by dotted lines in Figure 1, to permit the occupant to arise or be seated conveniently, or permit a person to pass infront of it in an assemblage of such chairs, said elevation of the seat acting to draw the brace legs forwardly as shown. The several parts may be folded manually into flatassembly as shown in Figure 2. In folding or extending the chair, the forward margin of the seat 'is moved through an are above the horizontal plane of the pivot rod 12. V

I claim as my invention-- r 1. A folding chair, comprising rigid side bars extending throughout the length of the chair, brace legs pivoted thereto adjacent the centers thereof, a seat between and pivoted to said bars in a plane below the pivotal connection of the brace legs to the bars, a

back between and pivoted at its upper end to said side bars, links pivotally connecting said back and brace legs, and means for limiting movement of the seat in one direction.

2. A folding chair, comprising side bars extending rigidly throughout the length of the chair brace legs pivoted thereto. a seat between and pivoted to said bars, the axis of the seat' being slightly to the rear of the transverse median line thereof, links in the plane of the seat connecting said seat to the brace legs and a back pivoted at its upper end to said side bars and extending into eugagement with said seat attimes and links connecting said back and brace legs for limiting movement of the seat in one direction;

3. A folding chair comprising side-bars extending rigidly throughout the length of the chair, bracelegs pivoted thereto, a seat between and pivoted to said bars, links in the plane of the seat connecting said seat to the brace-legs, a back pivoted at its upper end to said side-bars and extending into engagement with said seat at times, links'connecting said back and bracelegs, cross -rods connectingsaid bars, cross rods connecting said brace legs, and flexible straps connecting said cross rods beneath said seat.

4. A folding chair comprising sidebars extendingrigidly throughout the length of the chair, cross bars connecting the upper ends of said side bars, brace legs pivoted at their upper end to the central portions of said side bars, a seat pivoted to said ,side bars, links in the plane of said seat connecting it to said brace legs, a back pivoted at,

its upper end to said side bars below said cross bars and adapted to engage the seat at times, links plvotally connecting the lower portion of said back to said brace legs, rods connecting the lower portions of the bars, rods connecting the lowerportion of the brace legs, and flexible straps connecting the latter rods. 7

5. A folding chair comprising side bars extending rigidly throughout the length of the chair, brace legs pivoted at their upper ends to the central portions of said side bars, a seat pivoted to said side bars, a back pivoted at its upper end to said side bars, links connecting-the lowerportion of the back to the brace legs, the back extending into engagement with said seat at times, links: in the plane of the seat connecting it with the brace legs, whereby when the seat is turned upwardly it will draw the brace legs inwardly and said legs will draw the back inwardly. and flexible straps connecting the lower portions of the leg frame and bar frame together.

GEORGE H. BUGEXHAGEN.