US805846A - Adjustable support for chairs. - Google Patents

Description

N0. 805,846. PATENTED NOV 28, 1905.

J. FLINDALL. ADJUSTABLE SUPPORT FOR CHAIRS.

APPLICATION FILED FEB. 18. 1904.

I fizz/672697 x/vwm a fzta JOHN FLINDALL, OF CHICAGO, ILLINOIS.

ADJUSTABLE SUPPORT FOR CHAIRS.

Specification of Letters Patent.

Patented Nov. 28, 1905.

Application filed February 18, 1904. Serial No. 194,219.

T0 at whom it may concern:

Be it known that I, JOHN FLINDALL, a citizen of the United States, residing at Chicago, county of Cook, State of Illinois, haveinvented a certain new and useful Improvementin Adjustable Supports for Chairs; and I declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

My invention has for its object the production of an adjustable support for a chair or other seat. In the drawings I have shown it as applied to a rocking-chair; but it it obvious that it can be applied to any other form of chair without departing from the spirit of the invention.

In the drawings, Figure 1 is a side elevation of my chair; Fig. 2, a sectional view on the line 2 2 of Fig. 1, and Fig. 3 a sectional view on the line 3 3 of Fig. 1.

In carrying out the invention, A represents the seat or other support for the chair. Engaged to the bottom thereof are what may be termed channel-irons, shaped to provide a horizontal groove a.

B is an iron having extensions 6, which enter the channel a and slide therein.

6 represents ears depending from the piece B, one set at each end of the piece, and between those of each setis pivoted the end 0 of one of the supports C, the pivot being the rod D.

Engaged to the back of the seat A are depending ears E, in which the end f of the support F is pivoted, the two supports being pivoted together at f. Engaged to the back portion of the seat A is a piece Gr, preferably, although not necessarily, made of spring metal at g, so that the outer free end can be tilted. Of course the tilting movement may be obtained in other ways without departing from the spirit of the invention; but I prefer to make the piece G of spring metal, as above described. The free end of each piece G is provided with teeth g to form a rack, the two pieces G having their rack-teeth engaging the rod D and engaged together by the rod G, which also forms a handle to lift the two racks simultaneously.

H represents the rocker on one side of the chair, although this instead of being curved might also be any other suitable. form. Engaged to the end of the support H is a piece H, having a curved end it. The lower end cross-piece K. Engaged to the rocker H in any suitable manner is a strip L. The crosspiece K has depending lugs 7r, containing horizontal recesses which engage over the projecting edge of the strip L, so that the sup port C has a sliding engagement with the rocker H.

The operation will be readily understood. The operator grasps the rod G and lifts the rack-bar, so that the teeth clear the rod D, when the chair can be adjusted to any height desired, and then the racks are dropped onto the rod, and this looks the chair at the desired elevation. It is of course obvious that in raising the chair the rack-bars need not be touched by the operator, since the beveled faces of the teeth will enable them to slide over the rod D.

It is obvious that the supporting-pieces C and F may be made of anydesired shape; but I prefer to turn the lower portion of the body of each piece at right angle to itself, so that there will be formed the spring portions C and F. It is also obvious, of course, that the many details of construction can be changed or altered without departing from the spirit of the invention. I

What I claim is 1. In a rocking-chair, the combination with a seat, of a pair of rockers, an adjustable support interposed between each side of said seat and one of said rockers comprising a pair of members pivotally united, means for securing the lower end of one member of each pair to a rocker, means for pivotally securing the upper end of said member to the seat, means for securing the lower end of the second member of each pair in sliding engagement with the rocker, means for positively securing the upper end of said second member of each pair in sliding engagement with the seat, and a yielding rack-bar secured to the seat for retaining the upper end of the second member of each pair in the desired adjusted position.

2. In a chair or the like, the combination with the base thereof and a suitable support or supports to rest on the floor, of an adjustable support between the two comprising two sets of members, each set consisting of two members pivoted together in the form of a letter X, the lower end of one member hav- IQ teeth on the rack-bars depending downwardly and adapted to engage the connecting-rod between the two supporting members and means for holding said connected upper ends in sliding engagement with the base.

In testimony whereof I sign this specifica- 5 tion in the presence of two witnesses.

JOHN FLINDALL. itnesses:

Geo. L. WILKINSON, CLARA (J. CUNNINGHAM.

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