US439857A

US439857A - Convertible chair

Info

Publication number: US439857A
Authority: US
Publication date: 1890-11-04
Anticipated expiration: 1907-11-04

Description

(No Model.)

3 Sheets-Sheet 1. N. BARTELLE.

CONVERTIBLE CHAIR.

Patented Nov. 4, 1890.

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CONVERTIBLE CHAIR.

No. 439,857. Patented Nov. 4, 1890.

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3` Sheets-Sheet 3.

(No Model.)

N. BARTELLE.

CONVERTIBLE CHAIR.

No. 439,857. Patented Nov. 4', 1890.

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UNITED STATES PATENT OEEIcE.

NICHOLAS BARTELLE, OF TOLEDO, OHIO.

CONVERTIBLE oHAlR.

SPECIFICATION forming part of Letters Patent N0. 439,857, datedN0vem`ber 4, 1890.

Application liled December 14, 1889. Serial No. 333,804. (No model.)

To all whom it may concern:

Be it known that I, NICHOLAS BARTELLE, a citizen of the United States, residing at `Toledo,in the county of Lucas and State of Ohio, have invented certain new and useful Improvements in Convertible Chairs, of which the following is a specification, reference beinghad therein to the accompanyin gdrawin gs.

This invention relates t0 new and useful improvements in convertible chairs of that class which is generally known as a combined high chair and carriage, the chair being capable of being converted from a high chairto be used at the table to a low chair which may be readily moved around the room.

The invention consists in the peculiar means of connection between the chair-body proper and the su pporting-legs, whereby the chair maybe more readily changed from its high to its low position and locked in either of said positions; further, in the peculiar arrangement of the foot-rest and the chair-braces, whereby the weight of the occupant in its lowered position is arranged to rest largely upon one of the cross-braces; further, in the peculiar method of attaching the parts together, whereby it maybe put into a knockdown position for shipping, and, further, in the peculiar construction of the device for attaching the swin gin g table to the chair-frame, all as more fully hereinafter described, and shown in the accompanying drawings, in which- Figure l is a perspective view of my im proved chair in its lowered position. Fig. 2 is a vertical central section thereof in its raised position. Fig. 3 is a perspective bottom view of the chair with the legs partially removed to show the working of the parts.

A is the main seat-frame of the chair, having a suitable bottom piece B secured thereto, the back pieces O having suitable cross-pieces D and D and a suitable back E, arms F, armsupports G, and swinging table H. The upper cross-bar D of the back is of suitable shape and size to act asa handle for moving the chair about in its lowered position. The lower ends of the back pieces C extend a short distance below the frame of the chair-bottom,y

and are provided with suitable holes to receive the bolts e, which engage into the top of the front legs I, which are pivoted at or near their middle by suitable bolts J to the rear legs K, which latter at their forward ends have pivotal engagement with the rearwardlyprojecting spring-arms L by means of the bolts L. These spring-arms are connected at the back bya cross-piece M, having sleeved thereon the roller M', and slidingly engaging under the cross-bar M detachably secured to the seat by means of suitable staples N. A suitable stop N is secured to the side of the frame at the rear, over which the roller M is engaged to lock the chair in its raised position. The forward end of the seat-frame is provided with the downwardly projecting arms O, which at their lower ends are provided Awith the foot-rest O.

P and P are cross-bars connecting the front legs. The cross-bar Pis suitably arranged so that when the chair is in its lowered position the foot-rest will have a bearing upon it and sustain the weight of the occupant at the forward end of the chair, thus relieving the strain from the spring-arms L. A suitable stop Q may be provided,if desired, at the front end, against which the roller M may engage at the same time that the foot-rest strikes upon thecross-bar P, to give greater strength and rigidity to the device when being wheeled about. The rear legs are provided at their rear ends with the wheels R, and the front legs are provided at their front ends with the casters R', these wheels and casters being so located that when the chair is in its raised position they do not touch the ground, thereby giving the chair a rmrest upon itslegs; but as soon as the roller M is disengaged from the stop N the wheels and casters rest upon the ground and facilitate the lowering of the chair, and in its lowered position, as plainly shown in Fig. 1, the wheels and casters sustain its entire weight, when it may be readily trundled about as may be desired. The chair being thus constructed, to put it in a knockdown position all that is required of the workman is to withdraw the bolt h' which disengages both of the rear legs from the body, and the two bolts e, thus disconnecting the legs and body part entirely and putting it in condition for packing and shipping. The bolt M being replaced it will hold the springarms in position and leave no loose parts which might be lost in transportation. This ICO ' in its raised position the the rough usage which such a chair necessarily receives in being trundled about and raised and lowered while being occupied. It also allows of raising and lowering the chair with the least possible friction, the only noticeable friction being that of the spring-arms upon the cross-bars lV It will be seen that upper ends of the rear legs abut directly against the under side of the chair-body and receive the Weight of the occupant with but little strain upon the spring-arms, and that the pivotal point of the rear legs with the spring-arms is slightly lower that the cross-bar M thereby giving a spring upward to the other end of the spring-arms, holding them in position against the seatframe when located over the abutment or stop N By having the casters at the forward end of the chair it is evident that the same may be turned in a very small space.

What I claim as my invention isl. In a convertible chair, the combination, with the seat-frame, of front legs pivotally connected to the rear of said seat-frame, the rear legs pivotally connected at or near the center with said front legs, and movable spring-arms on the seat-frame with which the upper ends of the front legs are connected, a stop or stops on said seat-frame with which said spring-arms engage, and a movable support for the spring-arms, substantially as described.

2. In a convertible chair, the combination, with the seatframe, of the front legs pivotally connected to the rear of said seat-frame,

. the rear legs pivotally connected to said front legs near the middle and at their upper ends with sliding yielding arms united by a crosspiece, and a detachable cross-bar extending across the seat below the sliding arms, substantially as described.

3. In a convertible chair, the combination, with the seat-frame, of the front legs pivotally secured near the back, the rear legs pivotally secured with said front legs at or near their middle, sliding spring arms to which the upper ends of the rear legs are secured, a detachable bolt below the sliding arms over which the same move, caster- Wheels 'on the forward ends of the forward legs, and the wheels on the rear legs arranged to be off the ground and out of contact with the ioor in the raised position of the chair, substantially as described.

In testimony whereof I affix my signature, in presence of two witnesses, this 12th day of June, 1889.

NICHOLAS BARTELLE.

Witnesses:

Y LUTHER G. RAYMER, FRANK BARTELLE.