US2073693A - Spring base seating furniture frame - Google Patents

Description

Mamh w, 193?, D. HANAUER zmww SPRING BASE SEATING FURNITURE FRAME Filed Aug. 20, 1934 I Q 'PMI? Patented Mar. 16, 1937 UNITED STATES SPRING BASE SEATING FURNITURE FRAME Darwin Hanauer, La Grange, 111., assignor to .Nachman Spring-Filled Corporation, Chicago,

111., a corporation of Illinois Application August 20, 1934, Serial No. 740,550

Claims.

The main object of the present invention is to provide a very simple, cheap, durable and efficient seating furniture frame which may be produced at very low cost and which is yieldin 5 in itself to a degree commensurate to the comfort of the occupant and wherein the frame is so constructed as to permit the introduction of springs between relatively movable parts of the frame to resist and limit the relative movement thereof, the use of such springs being included as an object of the invention.

A further object of the invention is to provide a spring base seating furniture frame which is capable of being made in accordance with the method of making seating furniture frames described and claimed in the co-pending application of Louis A. Suekoff, filed of even date herewith, Serial No. 740,565.

Accompanying drawing illustrates a suitable embodiment of the invention as follows:

Fig. l is a perspective view of a seating furniture frame constructed in accordance with the invention.

Fig. 2 is a fragmentary rear elevation of the same.

Fig. 3 is a fragmentary vertical longitudinal section of the same on the line 3-3 of Fig. 2.

The frame of the present invention is composed of a plurality of initially oblong or substantially oblong frames made of a suitable metal wire or rod, one of said frames being of relatively great length and comprising end rails (I) and (2) and side rails which are herein shown as completely bent and formed to constitute a base frame for a seating furniture unit, such as a chair.

In practice, one end portion of the initially oblong or substantially oblong frame referred to, is'bent at one end portion in its side rails adjacent to the end rail (I) at the points (3),

40 to provide an upwardly projecting or inverted U-shaped portion of which the end rail (I) forms the upper member. The other end portion of said oblong or substantially oblong frame is similarly bent at the points (4) to provide a downwardly extending U-shaped portion of which the end rail (2) forms the lower member in the completed frame. Said frame is further bent along its side rails at the points (5) and (B) to provide ground supports (1), legs (8) at the front of theframe,

arms (9) at the top thereof, and to cause the last-mentioned U-shaped portions to project downwardly to overlap the first-mentioned U- shaped portion with the end rails (I) and (2) of said frame disposed parallel with each other and spaced from each other. The end rail (2) is disposed below the end rail (I) and preferably tension springs (III) are connected at their ends with said end rails (I) and (2) and are held against lateral movement along said rails by means of suitable spacing clips (I I) which are secured to the rails (I) and (2), respectively, in any suitable manner.

As shown in Fig. 2 each of the clips consists of a sheet metal member bent to arcuate form through an arc materially greater than degrees (as shown in Fig. 3) and which is provided midway between its side edges with a longi tudinal slot in which the hook of a spring lies when said spring is attached to the rail within said slot. Obviously, any other suitable spacing means may be provided for the said tension spring (III).

It will be obvious also that the first-mentioned end portion of the frame terminating in the end rail (I) is of slightly greater width than the end portion thereof terminating at the end rail (2) in order that said respective end portions may overlap each other and that the said portion terminating in the end rail (2) may pass between the side arms of the first-mentioned inverted U- shaped portion.

For the purpose of reinforcing the frame formed as hereinbefore described, a second square, oblong, or substantially oblong frame (I2) is disposed between the legs (8) of the firstnamed frame and is welded to the latter along substantially the entire length of its side rails (I3) thus reinforcing said first-mentioned frame and also providing a cross-brace support for the front end of a suitable seat frame (I4) which is adapted and intended to carry a cushion which is not shown herein.

A back support frame (I5), which is also initially oblong in shape and to which braces (I6) are securedat their ends, is disposed along its lower end portion between the side arms of the second-named U-shaped portion of the base frame, which terminates in the end. rail (2) and is welded or otherwise suitably secured thereto along the entire length of the portion of said frame (I5) which lies between said arms as aforesaid.

In the instance illustrated, the frame (I 5) is bent at the points (II) to provide a rearwardly inclined upper .end portion, said back-support being adapted to carry a suitable cushion which, preferably, is removably secured thereto, but which is omitted from illustratiom' In the instance illustrated there is shown in Fig. 3 the seat frame (I4) provided at its rear end with hooks (l9) which are adapted and intended to receive the lower end rail (I l) of the frame (l) for supporting the rear end of said frame (H). To the lower face of the frame (ll) 5 adjacent the front end thereof, there is secured a cross-bar (20) which abuts against the rear of the front seat frame support of the frame (l2) In use, a load resting upon the said frame I) will cause the rear and upper portion of the base 10 frame to sink against the action of the springs (l0) and to the extent to which the latter will yield to the load.

While practice has demonstrated that no further reinforcement of the base frame than is provided by the frame (I!) and the back-support (I5) is needed. it will be obvious that further braces may be introduced if desired.

The use of the springs (l0) permits the base frame of the chair to be made of much lighter wire or rod than would be required otherwise and is advantageous further in that the number of said springs may be varied to suit the taste of the occupant of the chair.

Obviously, if a rigid base frame is desired, the overlapping end portions of the base-frame may be welded or otherwise secured against relative movement.

I claim as my invention: 1. A base frame member for a seatim furniture unit comprising a pair of equal substantially parallel loop members each presenting a straight supporting portion, a front upright portion, a rear portion projecting upwardly from the supporting portion, a top portion, a portion ex- 5 tending downwardly from the top portion at the rear of the latter and to a point below the lastmentioned upwardly projecting portion, a crossbar joining the ends of the latter, a cross bar joining the ends of the downwardly extending portions and spaced substantially vertically from the first-named cross-bar, tension springs interposed between and secured to said cross-bars, and cross-bars joining the front upright portions of said loop members and the rear downwardly extending portions thereof below the level of the top portions and providing supports for the ends of a seat member.

2. A seating furniture frame including a skeleton unitary rod frame member presenting substantially parallel base rails, uprights at the front and rear ends of said base rails, side arms extending from the upper ends of the front uprights to points disposed substantially above the upper ends of the rear uprights, a cross bar connecting the upper ends of the rear uprights, a substantially U-shaped portion at the rear ends of the side arms and projecting to a point below the said cross bar, the middle portion of said U- shaped portion being substantially parallel with said cross bar and of substantially the same length as the latter, the side arms of said U- shaped portion and the rear uprights being disposed angularly to each other and the lower end portion of said U-shaped portion being received between the rear uprights, and tension springs of said U-shaped portion.

connecting said cross bar with the middle portion 3. A seating furniture frame including a skeleton unitary rod frame member presenting substantially parallel base rails, uprights at the front and rear ends of said base rails, side arms extending from the upper ends of the front uprights to points disposed substantially above the upper ends of the rear uprights, a cross bar connecting the upper ends of the rear uprights, a substantially U-shaped portion at the rear ends of the side arms and projecting to a point below the said cross bar, the side arms of said U-shaped portion and the rear uprights being disposed angularly to each other and the lower end portion of said U-shaped portion being received between the rear uprights, and tension springs connecting said cross bar with the middle portion of said U-shaped portion, cross bars connecting the front uprights, a cross-bar connecting the side arms of the U-shaped portion with each other and cooperating with one of the cross bars connecting the front uprights to provide supports for a seat frame.

4. A seating furniture frame including a skeleton unitary rod frame member presenting substantially parallel base rails, uprights at the front and rear ends of said base rails, side arms extending from the upper ends of the front uprights to points disposed substantially above the upper ends of the rear uprights, a cross bar connecting the upper ends of the rear uprights, a substan-- tially U-shaped portion at the rear ends of the side arms and projecting to a point below the said cross bar, the side arms of said U-shaped portion and the rear uprights being disposed angularly to each other and the lower end portion of said U-shaped portion being received between the rear uprights, cross bars connecting the front uprights, a cross bar connecting the side arms of the U-shaped portion with each other and cooperating with one of the cross bars connecting the front uprights to provide supports for a seat frame.

5. A seating furniture frame comprising a unitary skeleton rod frame member presenting a pair of substantially parallel base rails, uprights at the front and rear ends of said base rail, cross bars connecting said respective pairs of uprights, side arms extending from the upper ends of the front uprights to a point above the upper ends of the rear uprights, a substantially U-shaped member extending downwardly from the rear ends of the said side an'ns to a point below the cross bar connecting the rear uprights with each other, tension springs interposed between the last-mentioned cross bar and the middle portion of said U-shaped member, a cross bar connecting the side arms of said U-shaped member and cooperating with a cross bar connecting the front uprights with each other to provide a seat frame support,

said rear uprights and the side arms of said -U-shaped member extending angularly to each other and the lower end portions of the side arms of the U-shaped member being received between and guided by said rear uprights.

DARWIN HANAUER.

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