US787873A - Chair. - Google Patents

Description

PATENTED APR. 18, 1905.

J. H. BROWNBLL.

CHAIR.

APPLIOATION FILED AUG. 1, 1904.

2 SHEETS-SHEET 1,

Patented April 18, 1905,

Uiarreo STATES ATENT OFFICE.

JAMES II. BI'IOWNELL, OF CHICAGO, ILLINOIS, ASSlU-NOR OF ONE- FOUhTIII TO KASMUS MIOKELSEN, OF OAK PARK, ILLINOIS.

CHAIR.

SPECIFICATION forming part of Letters Patent No. 787,873, dated April 18, 1905.

Application filed August 1, 1904. Serial No. 219.018.

To (11/ 11-71011) it may concern.-

be it known that I. .Lums H. BnowNnLL, a citizen of the United States of America, residingatl hicago,in the county of Cook and State of Illinois, have invented certainnew and use ful Improvementsin Chairs, of which the following is a specification.

My invention relates to certain new and useful improvements in chairs; and its object is to produce a device of this class which shall have certain advantages which will appear more fully and at large in the course of this specilication.

To this end my invention consists in certain novel features of construction, which are clearly illustrated in the accompanying drawings and described in this specification.

In the aforesaid drawings, Figure 1 is a side view of a chairembodying my preferred construction. Fig. 2 is a front view thereof. Fig. 3 is a fragmental perspective view of a back nieceand oneof the brackets which connects it to the side piece. Fig. I is a fragmental perspective view of one of the front corners of the chair, a certain molding-strip and front piece being removed. Fig. 5 is a plan view of one of the arms, being partly cut away in the line 5 5 of Fig. I. Fig. (3 is a rear view, part of the back and legs being broken away. Fig. 7 isa vertical longitudinal section in the line 7 T of Fig. 2, the back being shown in a different position from that of Fig. I. Fig. 8 isa detail section in the line s s of Fig. I, and Fig. 9 is a detail section in the line 9 t) of Fig. l.

Referring to the drawings, the seat of the chair will be seen to consist in a rectangular frame A, comprising sides 1/ and front and back pieces 113/", respectively. This frame is supported upon legs 1/, and the front and rear pieces are preferably made removable from the sides. so that the chair may be readily taken apart and packed into compact form for shipment or storage. As shown in Fig. st. a bolt u connects the two sides a, nuts being provided upon the ends of the bolt for drawing the sides together upon the front piece 1/". A molding a is secured to the front iiece If and iro'ects above the same ivin 1 l .I 9 n m a linished appearance to the chair and to assist in keeping in place the cushion which is usually employed in chairs of this class. The molding and front piece M are fastened in place by screws a and by corner-pieces a, which are formed with hollow bosses adapted to cover up the nuts upon the ends of the rod 1/. Said corner-pieces are preferably secured to the molding and sides a by screws, which when removed leave the molding free for removal. The rear board If is supported in brackets u, screwed to the inner faces of the sides 1/, said brackets having screw-threzaled studs 1/", which extend into the ends of the rear board a, openings a being provided in the rear board near its ends, so that nuts may be screwed upon the studs a in connecting the rear board to the sides. In this way a rigid frame is made up which is readily assembled or taken apart. Slats a extend from side to side and are supported by cleats a.

The back is seen at B and is pivoted to the seat A by means of hinges 0. Each of said hinges consists, preferably, of leaves (1 c, Fig. 1, and knuckles (See Fig. 8.) The leaf (1 is secured upon the back andextends down in the form of a segment I", and theinnersides of the knuckles c" are elongated in the form of spindles c, which project into the ends of a roller 0', connecting the two hinges, and upon this roller are wound coiled springs c, the lower ends of which engage bearing-plates (1*, (see Fig. 7.) secured upon the under sides of the rear board 1/, the upper ends engaging brackets (2, secured upon the inner faces of theside pieces/) of the back. The side pieces 6 are connected by bars to complete the back of the chair.

A strut preferably in the form of a tube 1.) (see Figs. (3 and b) is secured in the side pieces of the bottom and extends between the seg ments (1. 'Ihrough this tube passes a rod (1, one end of which is formed with a head (I, engaging one of the segments. The other end is screwthreadcd to receive a clamping nut 17". By tightening up this nut the back may be held at any inclination to the seat, as is desired.

The arms of the chair I) are pivoted to the back at a at one end and their other ends are pivoted to links a at 0 which links are pivoted to the seat by means of hinges E. The hinges E are secured to the sides a of the seat by screws 6 as is clearly indicated in Fig. 9. The pivotal connection between the arms and seat is such that any movement of the arms with respect to the seat is always approximately parallel thereto. In this way when the back is tilted back by the person sitting in the chair the arms move down with the back, so that in all positions of the latter they are at a suitable height with respect to the seat to afford a comfortable resting-place for the arms of the person sitting in the chair.

The tension of the springs c is preferably not only'sufticient to hold the back upright, but also to support a person reclining in the chair in any comfortable position without the necessity of tightening up the nut (Z I realize that considerable variation is possible in the details of this construction without departing from the spirit of the invention, and I do not intend tolimit myself to the specific details herein shown and described.

I claim as new and desire to secure by Letters Patent 1. In a chair, the combination with a rigid bottom frame and legs, of a back hinged to the bottom frame, a pair of arms hinged to the back at one end, a pair of uprights hinged to the other ends of said arms and l'iinged to the bottom frame, hinges between the back and bottom frame, one of the leaves of which contains a curved slot concentric with the pivotal axis and the other of which is provided with an inwardly-extending spindle, a roller supported between the spindlesof the two I hinges, a spring coiled upon the roller and tending to crowd the back forward and a clamping-rod secured in the bottom frameand provided at its ends with means bearing upon the slotted portion of the hinges to clamp the back against pivotal movement upon the axis of the latter.

2. In a chair, the combination with a rigid bottom frame, of a back hinged thereto by means of hinges comprising the leaves, 0, 0', one of which is provided with a curved slot concentric with the pivotal axis, and the other of which is provided with an inwardly-extending spindle, a roller supported between the spindles of the two hinges, a spring supported upon the roller and tending to crowd the back forward, and a clamping-rod secured in the bottom frame and provided at its ends with means bearing upon the slotted portion of the hinges to clamp the back against pivotal movement upon the axis of the latter.

3. In a knockdown chair, a rigid bottom frame made up of side pieces provided with legs, a removable front piece, a cross-bolt clamping the side pieces to the front piece and having nuts upon the outsides of the side pieces, a molding secured between the side pieces in front of said bolts, corner-pieces having hollow bosses covering said nuts, sockets secured to the sides of the rear portions of the side pieces, screw-threaded studs upon said sockets, a rear cross-bar between said sockets containing perforations for said studs and openings adjacent to the ends thereof and nuts upon the ends of said studs within said openings clamping the rear cross-bars to the sockets.

4:. In achair of the classdescribed, the combination with a rigid bottom frame and back, of hinges between the bottom frame and back, comprising the leaves, 0, 0, one of which bears the slotted segment, 0*, a tubular strut, D, secured in the side pieces, a rod extending through said strut and through the slots in the segment, 0*, and means for tightening said rod upon the segments and the strut to clamp the back against pivotal movement upon the hinges.

In witness whereof I have signed the above application for Letters Patent at Chicago, in the county of Cook and State of Illinois, this 12th day of July, A. D. 190 i.

J AMES H. BROWN ELL.

WVitnesses:

CHAS. O. SHERVEY, H. BITNER.

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