US1045599A

US1045599A - Chair.

Info

Publication number: US1045599A
Application number: US69288012A
Authority: US
Inventors: Otto L Ostendorf
Original assignee: Individual
Current assignee: Individual
Priority date: 1912-04-24
Filing date: 1912-04-24
Publication date: 1912-11-26
Anticipated expiration: 1929-11-26

Description

` 0. L. OSTENDORF.

CHAIR.

APPLIOATION FILED APR.24,1912.

Patented Nov. 26,

2 SHEETS-SHEET 1.

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v 0. L.` OSTENDORF.

CHAIR.

APPLICATION FILED APR. 2A, 1912.

Patented. NOV. 26|, 1912.

2 SHEETS-SHEET 2.

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enana Specification of ILetters Paten-t. Patented Nov.' 26, 1912, Application ined April a4, 1912.v Serial N'o. 692,880.

To all wholm it may concern: .Be it known that I,A O'r'ro L; .OS'rENDoRF, ofvRochester, in the count-y of Monroe and Sta-te of New York. have invented certain new and useful Improvements in Chairs; and I do hereby declare the following to be a full, clear, and exact description of the same, reference beingchad to the accompanying drawings, forming a partv of this specification, and to the reference-numerals marked thereon.

My invention relates to improvements .in chairs, with particular reference to reclining chairs of the type embodying a. swingingly movable back, and it has for its primaryolo-l .ject to provide an improved construction and arrangement of parts for-effectingverf tical movement of the rear portion of the seat relatively tothe back, whenl the back is lowered, and vice versa.

A further object of my invention consists in the provision of novel means for supporting the seat on the chair frame. and in connecting the seat with the back in ysuch'a manner as to obtain the necessary relative movement betweenthem. .so'as to accommo` date all positie-ns of the body of a person in the chair.

To these and 'other ends the invention consists in certain improvements and combinay tions of parts all as will be hereinafter more fully described, the novel features being pointed-out in the claims at the end of the specication.

Figure l is a vertical sectional view of a chair constructed-in accordance with 4a preferred embodiment'o'fmy invention. FigQg. 1s a view in elevat1on,iw1th t-he seat and back cushions removed. Fig. B'is a vertical sectional view taken in the same plane as Fig.

' l, the back being in loweredposition, and

the seat in correspondingly raised position. Fig. 4 is a detail sectional view, showing the connection between the back frame and the seat frame. F 5 is a detail view in elevation, of the rack by which the back frame may be adjusted vertically.. and Fig. (i is a view in perspective of the hinge for connecting the seat frame to the base frame.

Similar reference characters throughoutthe several figures indicate the same parts.

In the present embodiment of the invention, 1 designates the base frame, 2 is the seat frame and 3 is the back frame, while 4;

and 5 designate the cushions or upholstery Theseat frame is pivotally supported at the front ofthe Ybase frame, and includesA '-side.

pieces

1,0 which are provided at their Y(rea-r ends with reversely curved portions to 4whichare attached correspondingly curved metal wear plates 11. The curved portions of the side pieces rest lon the anti-friction devices 9, and the uppermost portions of the curved surfaces constitute seats for the antifriction devices 9 when the chair parts are in their normal position as shown in Fig. l, while the forwardly extending portions of the curved surfaces are so shaped that in Y being due to the formation ofthe cam sur- .faees with which theanti-friction devices 9 engage, as shown in Fig. 3. The parts are V'held 'in normal position by means of a tension spring 12 connecting the seatframe and the base frames respectively, but'it will be understood that the resistance offered by the spring is such that it may readily be overcome by pressure against the chair back. The tension of spring l2 may be increased by raising the back frame from'the position shown in the drawings, and supporting it in one of the upper pairs of notches 7. This effects a raising also of the seat frame, thus creating a greater tension on the spring 1.2. This adjustment is desirable for persons of different weight so that the .resistance offered will be proper under. all conditions,'to insure comfort, and it will he understood that while I have shown three possible adjustments for the back frame, I may employ a structurel enabling a greater or smaller their cooperation with the projections on number of adjustments Without departing from the essential idea-of my improvement.

' The seat frame 2 is pivotally and removably attached at the front of the base frame, and to this end I attach to the base frame the hinge leaves 13 which are preferably provided With rearwardly upturned portions 14 `and are slotted at 15. The seat frame carries lcooperating hinge leaves 16,

which have angular lugs 1 7 adapted toen-y gage'in the slotted portions 15 of the leaves 13. This forms a simple and extremely efficient hinge,'permitting ready movement of the seat frame about its pivotal axis, and enables the seat frame to be removed from -the base 4frame by lowering it at thel rear,

. after the back frame is removed. It Will be understood that the Weight of the parts, together with the spring 12, holds theback frame in its normal position, in Which it supports the seat frame, and prevents removal ofthe latter. To take the chair apart, the spring 12 is first removed, and the back can then be lifted out, leaving the seat free to be detached fromits hinge supports.

I claim as my invention:

. 1. In a chair, the combination With a base frame, of a seat frame pivotally supported at the front of the base frame, the seat frame including side pieces each having a reversely curved portion formed thereon, a back frame -pivotally supported on thev base frame, and

projections on the back frame having engagement with the reversely curved portions of theside pieces.

2. In a chair, the combination Wit-h a bas'e frame, of a seat frame pivotally supported at the ,front of the base frame, the seat frame including side pieces each having a reversely curved portion formed thereon, a

back frame pivotally supported on the base frame, and anti-friction devices carried by the back-frame and engaging said curved portions ofthe side pieces.

3. In a chair, the combination with a base frame,of a seat frame pivotally supported at the front of the base frame, the seat frame including side pieces each having a curved portion formed thereon, metal Wear plates secured to said curved portions and back frame and engaging said curved portions of the side pieces, and a spring connecting the base frame and the rear partof the seat frame. A

5. In a chair, the combination With a base frame, of a seat frame pivotally supported at the front of the base frame, the seat frame including side pieces each having a cam surface at the rear thereof of extended, gradual curvature, a back-frame pivotally supported on the base frame, and projections on the back frame having engagement with said cam surfaces. OTTO IJ. OSTENDORF.

Witnesses:

JESSE B. WILLHAM, R. I. LENIHAN.