US1404537A

US1404537A - Folding chair

Info

Publication number: US1404537A
Application number: US461023A
Authority: US
Inventors: Mendelson Max
Original assignee: Individual
Current assignee: Individual
Priority date: 1921-04-13
Filing date: 1921-04-13
Publication date: 1922-01-24
Anticipated expiration: 1939-01-24

Description

M. MENDELSON.

FOLDING CHAIR.

APPLICATION FILED APH.13.1921.

04,537, Patented Jan. 24, 1922.

INV IV Max Mendelso: TOR

UNITED STATES MAX MENDELSON, OF NEW YORK,

PATENT OFFICE.

FOLDING- CHAIR.

To all whom it may concern.'

Be it known that l, MAX MnNDnLsoN, a citizen of the Republic of Russia, residing at New York city, in the county of New York and State of New York, have invented certain new and useful Improvements in Folding Chairs, of which the following is specification.

This invention relates to improvements in folding chairs in which two pairs of pivotally joined supports or legs are capable of collapsing so as to fold a divided seat into substantial alignment with the legs.

The object of this invention is to provide an eliic-iently operating device of this character, wherein the members may be folded to occupy a small space.

il further object of this invention is to provide suitable supporting elements for a divided seat member, whereby the latter is prevented from accidentally collapsing while in its extended position.

The invention consists in the structural features and combinations of parts fully described, with reference to the accompanying drawing, wherein- Fig. 1, is a perspective view of the folding chair with parts shown broken away to disclose the angle guides and the connecting link.

Fig. 2, is a substantially cross sectional view through the chair -in its extended position. y

F ig. 3, is view similar to that shown in Fig. 27 except that the chair is in its folded position.

Fig. 1, is a detail perspective on an enlarged scale showing the connecting link ybetween the oppositely extending angle pieces of the seat.

Referring to the

drawing

10 and 11 denote the two pairs of supporting legs, said legs being preferably constructed of flat metal stock. lThe legs of each pair cross each other at 12 where they are pivoted together. This construction provides a substantially X shaped supporting structure for a divided seat 13. The legs of each pair are connected to the opposite legs near their lower ends by means of tie-bars lll. The upper' ends of the two pairs of legs are connected by

guide rods

15 and 16. The

guide rods

15 and 16 are in substantially the same plane with each other throughout all of their movements.

The seat 18 comprises forward and rear- Specicaton of Letters Patent.

Patented Jan. 24, 1922.

serial No. 461,023.

. Asections 19 and 2O respectively, said tions boing cach provided with angle pieces 21 secured to the underside of the sections adjacent their side edges. Each angle piece 21 has a slotted depending flange 22, the slots of the flanges on each seat section being opposite and parallel to each other. The opposite parallel slots in the lianges 22 of the forward section 19 are adapted to receive the guide rod 15; and the opposite parallel slots in the flanges 22 of the rearward section 2O are adapted to receive the guide rod 16. Stop lugs 23 are carried by the under face of angle pieces 21 and are located adjacent the inner end of each flange 22. rthese lugs 23 are in the path of movement of the

guide rods

15 and 16.

Pivotally connected to the inner ends of the flanges 22 is a substantially T shaped link 2l provided with

pivot pins

25 and 26 about which said angle pieces turn. 'The stem of the T shaped link 2lis bent inwardly at right angles to the body of said link to provide a flange 24-a which underlies and supports the abutting inner edges of the sections of the seat 13 when the latter is in its extended position. Intermediate the length of the link 24 and beneath the flange 2l is a third pivot pin 27 which receives one end of a supporting brace 28. The'opposit@ end of the brace 28 is pivoted on a pivot pin 29 carried by the forward member of the pair of legs. The supporting brace 28 is disposed at an angle when the seat is in extended position and supports the link 2a against downward pressure by establishing a triangular truss between the link and two'points on the forward leg of tno chair. The upper end of the brace 28 is cutaway slig itly to receive the inner lower corner of the flange 22 carried by the forwrfl section 19. lVeight applied to the scat will bring this corner member into contact with the cut away portion of 28 so that ld support for the seat 13 may be establicher-. ln order that the downward pressure may be equalized a supporting brace 28 is provided on each side of the chair.

The operation of folding this chair will be best understood with reference to Figs. 2 and 3, in connection with the following description. To fold the chair to its closed position it is simply necessary to cause the legs of each pair to swing towards one another about the pivots 12. By this operation the seat sections will move rearwardly as a unit and in a horii lo zontal plane and the guide rod 16 will traverse the length of the slot 22 until the stop lug 23 is engaged, whereupon, they distance between the guide rod and the connecting link 24s has shortened sufficiently to compel the section to swing about the guide rod 16 and pivot pin 25 until-the lower edge of the slotted portion of the angle piece engages the rear edge of the brace 28. The movement of the section 20 is then completed and the guide rod 15 has traversed its guide slots 22 substantialli7 Vhalf of its length permitting the section'19 to remain horizontal.

Vthe brace 28.' The sections 19 and 2O will,

when completely folded as shown in Fig. 3, be in substantial parallel relation to the legs.

Yhen the chair is in its extended position andV weight is applied to the seat 13, there will be a tendenc7 for the central portion to sag. But due to the peculiar construction of l the T shaped connecting link 24 the adjacent inner edges of the

sections

19 and 20 are supported upon flange 9A of the link 24. To

` further support the seat 13 the inclined supporting. braces 28 tend to f'orce the members of each pair of' legs further apart. This eX- erts an outward pull at the ends of the sections 19 and 2O and which pull will aid in maintaining the seat in a horizontal position lwhen the latter is extended.

l'claimf- 1. A. foldingchair, Vcomprising pairs of pivotally7 interconnected legs, a sectional seat supported b v said legs, links pivot-ally connecting the inner ends of said sections tol gether, andV means supporting said links which when said legs are collapsed the see tions of said seat will first move rearwardly as a unit and will thereafter move towards each other about opposite ends of said links to lie arallel to said legs.

2. folding chair, comprising ,pairs of pivotally interconnected legs, a sectional seat The final movement of the guide rod 15 towards the supported by said legs and comprising forward and rearward sections pivotally linked together, and means whereby when said legs are collapsed the seat will be first moved rearwardly substantially the length of the rearward section and then the sections will move toward each other to lie in substantial parallel relation with the legs.

3. A folding chair, comprising parallel pairs of crossed legs pivotally interconnected together, guide rods connecting the upper ends of parallel legs, a sectional seat compris ingy forward and rearward sections pivotally linked together, slotted parallel flanges carried by each section and adapted to receive said guide rods, and means supporting the central portion ofsaid seat when the latter' is in extended position and moving the seat as a unit towards the rear when the legsv are Vcollapsed so as to cause the guide rods to traverse the length of the slotted flanges whereupon the sections will move toward eachother about the guide rods to fold into substantial parallel relation with the legs.

l. A folding chair, comprising pairs of pivotally interconnected legs, a sectional seat supported by saidl legs and comprisingrf'orward and rearward sections, a 'l' shaped link pivotally connecting the inner edges of' said sections and provided with a supporting flange adapted to receive the abuttingY edges ofl the sections when'the latter are in extend-V ed position, and means pivotally connecting the. T shaped link with one leg so that downward pressure on said seat will tend to further separate the legs.

A folding chair, comprising parallel pairs of pivotally interconnected legs, guide rods connecting the upper ends of each pair of legs, a sectional seat provided with parallel slotted flanges adapted to receive said guide rods, lugs carried by said seat and iocated in the path of movement of said guide rods, and means wherebyv when the legs are collapsed, the sections will firstinove rearwardly until the lugs are engaged bytheguide rods and will thereafter move towards each otherabout said guide rods to lie` parallel to said legs. Y

ln testimony whereof I affix mv signature.

MAX MnNnnLsoN.

loo