US793171A - Adjustable chair. - Google Patents

Description

No. 793,171. PATENTED JUNE 27, 1905. A. A. BARTLETT.

ADJUSTABLE CHAIR.

APPLICATION FILED SEPT. G, 1904.

gmTV'WimYF TFWT IINTTED STATES Patented June 27, 1905.

PATENT OFFICE.

ADJUSTABLE CHAIR.

SPECIFICATION forming part of Letters Patent No.793,171, dated June 27, 1905.

Application filed September 6, 1904. Serial No. 223,362.

To (111/ whom, it may concern.-

1 shaft 11, upon which revolve the side frames Be it known that I, ALDEN A. BARTLETT, a l of the back 13 of the chair, to which are atcitizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented a new and useful Improved Adjustable Chair, of which the following is a specification.

This invention relates to adjustable chairs in which the height of the seat, the inclination of the back, and the position of the footrest may be varied at will; and the object of my improvement is to provide an adjustable chair in which the back can be securely positioned at any angle, while the seat can be raised to the same level with the back when that in horizontal position, so that back and seat may form a couch.

A further object of my improvement is to provide a chair in which the seat may be socured at any desired height or may be removed entirely.

I attain these objects by the construction shown in the accompanying drawings, in which- Figure 1 is a side view of my chair. Fig. 2 is a front view of the same with the foot-rest removed. Fig. 3 is a longitudinal crosssec tion of the chair when adjusted to serve as a couch, the cushions not being in cross-section. Fig. 1 is a detail of the locking means for the back. Fig. 5 is a detail of the adj usting and supporting means for the seat. Fig. 6 is a crosssection of the same.

Similar reference characters refer to like parts throughout the several views.

The chair shown in the drawings comprises a seat-frame, a back that may be secured at various inclinations from the vertical to the horizontal, and a seat that may be raised or lowered at will. The two feet 1 of the main frame carry the casters 2 and are separated by the cross-bar 3. In their inner sides are loops 1 for the side bars 5 of the foot-rest 6. The bars are slidable in the loops 1, so that the foot-rest may be placed at any desired distance from the frame or removed entirely. The front legs 8 and hind legs 9 rest on the feet 1 and are connected at their upper ends by the arms 10. Passing through the rear ends of the arms and secured therein is the tached the brackets 12. The brackets are provided with the internal teeth 14, which engage the rod 15, that rests in the clevises 16, attached to the upper ends of the hind legs of the chair. To adjust the position of the back, the rod is lifted from between the teeth 14 and the back turned to the desired angle and the rod then replaced, thus locking the back firmly in place.

The seat-frame 17 has secured to it two downwardly and rearwardly extending guidearms 1.8,whieh are spaced apart at theirlower ends by the cross-bar 11) and are held at the desired angle by the braces 20. These guidearms are slidable in the grooves 21, formed in the diagonal pieces 22 between the feet and front legs. The grooves are continued across the inner sides of the front legs. In the bottoms of the grooves are secured the notched bars 23, into which lit the ends of the crossrod 24. The guide-arms 18 rest on this crossrod, and thus support the seat-frame. It will be noticed that by lifting this rod out of the notches in the bars 23 that it can be moved up and down, as desired, and with it thescat-frame. The distancefrom the pivotrod 11 to the lower end of the back should be the same as that from this rod 11 to the rear edge of the seat-frame when the seat is in the position shown in Fig. 3.

IVhen it is desired to use the chair when giving a foot-bath or for like purposes, the patient may sit on the back, which is secured in the position shown in Fig. 3, while the seat is removed entirely. The tub rests 011 the frame of the foot-rest.

Various changes may be made by those skilled in the art without departing from the spirit of my invention. Cross-bars to brace the mainframe may be inserted where deemed necessary, and the feet 1 may be entirely omitted.

IVhat I claim as my invention, and desire to secure by Letters Patent, is-

1. In an adjustable chair, the combination of the chair-frame, a back adjustably ateured in vertical, horizontal and intermeditached to said frame and adapted to be se- IOO port the seat at variable heights.

3. In an adjustable chair, the combination of a frame, a rod carried by said frame, a 15 chair-back pivoted on said rod, a bracket secured to said back and provided with teeth, a laterally-movable locking-rod adapted to engage said teeth to hold said back in predetermined position, and means carried by said 20 frame to secure the locking-rod.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ALDEN A. BARTLETT. Witnesses:

H. G. E. MARTIN, O. D. I-IILL.

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