US1919746A - Folding chair - Google Patents

Description

July 25, 1933. w. QRAsTETTr-:R 1,919,746

n FOLDING `CHAIR Filed March 20, 1931 2 Sheets-Sheet l l i i Y 11111111111 ATTORNEY July 25, 1933. Aw. c. RASTETTER FOLDING CHAIR 2 Sheets-Sheet 2 Filed March 2o, 1951 g @mimi/5mm.

- BY A ATTORNEY.

Patented July 25, 1933 UNITED STATES PATENT OFFECE WILLIAM ennsfrnrrnn, oFjFoRfr WAYNE,l INDIANA FOLDING CHAIRv ApplicationA mea March, 2o, 1931.. semi No. 524,043.'

iiledSeptember 29, 1930ffor Folding chairs,

and is distinguished therefrom particularly y in the means whereby the Yfolding move-I ments of the seatandrear ylegs are limited and in several other respects as will appear inthe following description. i

An illustrative embodiment of the iiivention is shown in the `accompanying drawings, vin which: l Y Fig. l is a side elevation of a chair strncture in which the Viiiventioiifis embodied,

the chair being in' extended vposition and portions thereof beingbroken away;

2 is a detail view upon an enlarged scale of the connection between thestoprod and the seatframeportions being in section; i

Fig. 8 is another detailview uponaii-enf larged scale showing the manner of securing the seat-frame on the seat-rod, lparts beingv in section;

Fig. 4 is a rear elevation of the chair in folded position; n y

Fig. 5 is a detail view upon an enlarged scale'of a guide shown in vertical section and a stop-rod in connection therewith;

Fig. 6 is an elevation upon an enlarged scale ofthe guide showing the outer face thereof, a portion being broken away; and

Fig. 7 is an enlarged detail fragmentary view of the stop-rod and cross brace for the rear legs.

The chair shown in the illustrative em` bodiment of the invention is comprised of a main frame 1 having side members2 constituting forelegs, there being secured in the upper end portions of said frame a backrest 3. In said forelegs is secured a trans- Athe seat-rod 4v folding or versely disposed seat-rod '4, and upon said seat iod is pivotedly supported a seat frame 5 preferably formed of a single stri-p bent so as to have lparallel side members 6, in` which permanentlysecured a. seat 7. L'. Upon the inner face of each side member is disposed aplate8 through which therod 4 extends and against which the corresponding. upper ends of a cross-,brace 9 bear, said rod 4 also extending through said upper ends of the brace. A tubular spacer l0 is.

y positioned upon 'the rod 4 Awith itsrespective ends extending tothe corresponding upper ends of said cross-brace. Upon 'the outer face of each side ineinbei 6 `of theseat- 65. frame is disposed a plate 11 through which the rod 4 extends, each plate having at its reai end opposed ears 12 and 13 between which the corresponding 'ends of the side members are-secured by meansA of a rivet 14. Uponsthe rod 4between vthe plate ll and' the adjacent inner face .of thecorrespoiiding foreleg. 2 is disposed `a tubular spacer l5 whereby the seat-frame'is held centrally within the frame l spaced 'from theforelegs. Thelower ends of the braces 9 are securedrespectively to the inner yfaces of the forelegs 2, asr indica-ted. by 9', so that the cross-brace sustains the seat-frame in its central position relative to the framel.

To each foreleg 2,*upon thejinner face' thereof at a point above the seat-rod 4is pivoted, as indicatedby 16. a rear leg 17, and each rear leg is connected with the'orresponding side member 6 of theseat-fraine by a link v18, the forward ends vof said links being' pivoted tothe corresponding sides of theseat-frame through the plates l1 thereon at points between theseat rod 4 and the rear ends kof the side members 6, as indicated by 19." The oppositeends of said links are pivoted to the corresponding rear legs upon the innerV faces thereof as indicated by 20. Vhen the seat Vis turnedpivotedly upon v unfolding movement is imparted to the rear legs 17 yaccordingly. y' p To the lower end portions ofV each rear leg upon the inner face thereof is disposed aguide member 21 having a longitudinally ioo v slotted embossment 22, the upper end of which is closed and the lower end of which is open, and a cross-brace 23 is secured together with said guide members to said rear legs by means of rivets 24. Y

Each of he plates 11 has formed upon its outer face adjacent the rear end thereof a perforated embossment 25 inwhich is pivotedly secured a stop-rod 26, the upper end of which rod has formed thereon a bent prong 27 that engages in the corresponding embossment so that the rod has pivotal connection with the rear end of the seat-frame. The opposite end of each stoprod 26 has an elbow 28 that projects through the slot 29 of the embossment 22 on the corresponding guide member, and upon the extremity of the elbow is formed a head 30 which is dis-y posed within the embossment and has sliding movement therein when the rod is moved vertically relative to the guide member. Each upper arm oi the brace 23 has a slot 3l made therein through which the rod 26 has sliding movement, said slot being elongated to permit the prong 27 to be passed therethrough, and the lowerend .of the embossment being open to permit the head 30 to be inserted therein when the rod is being assembled in the chair structure.

A feature ol the invention is the relative arrangement of the cross-brace 9, the torelegs Q, the seatrod 4 and the seat-frame 5 whereby the seat-rod receives support from the 'torelegs and the cross-brace and the sides 6 of the seat-frame are suspended upon' the rod respectively at points between the upper ends oir' the cross-brace and the forelegs correspondingly. In this manner the seat-rod is sustained ixedly in position by the 'forelegs and the cross-brace whereby an unyielding support for the seat frame is afforded and bending ofthe seat rod is obviatedwhen the chair is subjected to the weight of the occupant. Y

I claim:

l. In a folding chair, a main frame oon stituting a back and orelegs, rear legs pivoted to said main frame, a seat rod the ends of which are secured in said main frame at points therein below the rear by pivots, a seat-frame pivoted on said seat-rod, means connecting the seat-frame and the rear legs for imparting movement to said rear legs rearwardly as the seat is extended for use, a guide member having a longitudinally slotted embossment on the inner face ot each rear leg, a cross-brace connecting said rear legs the upper arms of which have each a rslot therein, and stop-rods pivoted to the rear end of said seat-frame extending respectively through lthe apertures in said crossbrace and having a head slidably engaged in the embossment of the corresponding guide member inwhich it is confined and has limited movement.

2. In a folding chair, a main frame con stituting a back and forelegs, rear legs pivoted to said main frame', a'seat rod the ends of which are secured in said main frame at points therein below theV rear leg pivots, a seat-trame pivoted on said seat-rod, means connecting the seat-frame and the rear legs for imparting movement to said rear legs rearwardly as the seat is extended for use, a guide member having a longitudinally slotted embossment on the inner face of each rear leg, and stop-rods pivoted to the rear end of said seat-frame each having a head slidably engaged'in the embossinent of the corresponding guide member in which it is confined and has limited movement.

3. In a folding chair, a main frame, a seat pivoted in the frame, a rear leg structure pivotedlyl connected in the frame at pointsv above the seat pivots, a guide member disposed upon each of the legs of said rear leg structure having a longitudinal slot, and stop-rods pivoted on the rear end of said seat, the lower end of each of said stoprodsvbeing confined in the corresponding guide and having limited sliding movement therein.

WILLIAM C. RASTETTER.

TUO

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