US2090295A - Spring construction - Google Patents

Description

Aug. 17, 1937. HlATT 2,090,295

SPRING CONSTRUCTION Filed Dec. 50, 1955 l INVENTOR. Hayden H. Hz'aff BY MM A Z'a/m/ ATTORNEY.

Patented Aug. 17, 1937 UNITED STATEfi PATENT OFFICE 7 Claims.

My invention relates to spring construction that is especially adapted for davenports, easy chairs, and the like.

More particularly the principal objects of my invention are to provide a resilient bottom that will prevent the spring construction from sagging but not interfere with its comfort, and to provide a spring construction that utilizes the strength of woven metal strips but so constructing such a spring bottom that it will not squeak.

Another object is to provide means for preventing the woven metal strips from slipping laterally.

The invention also comprises novel details of construction and novel combinations and arrangements of parts, which will more fully appear in the course of the following description.

In the drawing, like reference characters designate similar parts in the several views.

Figure 1 is an underneath plan View, partly broken away, showing a davenport spring construction comprising an embodiment of my invention.

Figure 2 is an enlarged, broken section, taken along the line 22 of Figure 1, looking in the direction of the arrows.

Referring more in detail to the drawing, the reference numeral 3 designates generally an open frame in which an embodiment of my invention is mounted. Cross members 4 are provided in the frame for rigidity. The cross members and the frame define generally the spaces for supporting cushions of a davenport.

Extending from side to side and from end to end within the frame 3 are transverse and longitudinal metal bands or strips respectively indicated by the characters 5 and 6. The bands are interwoven, as will be more fully explained hereinafter.

Apertured plates 8 mount the metal bands within the frame 3, through the intermediary of helical springs 1. Each plate is driven into an inner face of the frame and held in place by a nail 9 driven through an aperture of the plate, as indicated in Figure 2.

One end of each helical spring is hooked through another opening in the adjacent apertured plate 8, and the other end of the spring is hooked through an opening adjacent the end of the metal strip supported thereby, as also suggested in Figure 2.

The front of the davenport has been indicated by the arrow I0. At said front side, the helical springs are omitted, whereby to maintain the front of the davenport approximately vertical at all times. The ends of the metal strips at the front side have shown Figure 2 as being held in place by a nail II and a staple I2. It is to be understood that other fastening means may be employed. 5

Supported by the interwoven metal strips is a bottom member I4 for the davenport. This bottom member comprises a sheet I5 of flexible material covered by a fabric I6. The sheet I5 may be of pressed, fibrous material, such as card- 0 board, composition, or the like, and the fabric is preferably burlap or other coarse fabric. The fabric is shown in the drawing as covering both the top and bottom surfaces of the sheet IS; in fact, is shown as a bag completely enveloping the sheet I5.

The bottom member is provided with a plurality of pairs of slits I1 and I8. The pairs of slits I! and I8 are alternately transverse and longitudinal of the frame respectively. The metal 20 strips 6 and 5 are respectively threaded through the slits I1 and I8. At each point where the interwoven strips 5 and 6 cross each other, the combined thickness of the sheet I5 and its top and bottom fabric coverings I6 is between the. overlapping portions of the strips, as best shown in Figure 2.

Coiled springs I9 are mounted upon the bottom member I4. Conventional tying cords 20 are employed to tie the several coiled springs together and to the frame 3. It will be noted that a coiled spring I9 is placed at each overlapping of the metal strips 5 and 6. The lowermost turn 2| of each coiled spring is caught under the fabric covering on top of the sheet I5. The broken away portion of Figure 1 shows that turn 2| of the coil is threaded 1n and out of said fabric, in order to obtain a firm foothold without the necessity of sewing.

In the use of a davenport, easy chair, or the like, embodying my spring construction, the overlapping portions of the metal strips will not squeak, due to the interposition of the sheet I5 and its fabric covering.

By my spring construction, the durability, strength and non-sagging features of metal strips are utilized with the noiselessness of fabric webbing. Moreover, the comfort is not in any way interfered with, and the metal strips will not slip laterally. 50

While I have illustrated and described what I now regard as the preferred embodiment of my invention, the construction is, of course, subject to modifications in numerous ways without departing from the spirit of my invention. I, there- 55 fore, do not wish to restrict myself to the particular form of construction illustrated and described, but desire to avail myself of all modifications which may fall within the scope of the appended claims.

Having thus described my invention, whatI claim and desire to secure by Letters Patent is:

1. In furniture spring construction, the combination of a frame, metal strips arranged within the frame, a comparatively stiff bottom member, a fabric covering for the bottom member, the bottom member and the fabric covering having coinciding slits, the strips being interwoven with the bottom member and its said covering at said slits, and a series of coiled springs interwoven in the said covering, the bottom member separating the springs from the strips, whereby to eliminate squeaking, the fabric being held in place by being interwoven with the strips and the fabric in turn holding the springs in place.

2. In furniture spring construction, a frame, overlapping metal strips arranged longitudinally and transversely within the frame, a comparatively stiff bottom member provided with slits that extend transversely and longitudinally with respect to the frame, the strips being interwoven in said slits, and the bottom member being disposed between overlapping portions of the strips, the longitudinal strips being interwoven in the transverse slits and the transverse strips being interwoven in the longitudinal slits, whereby to prevent the bottom member from slipping either transversely or longitudinally, and the comparative stiffness of the bottom member tending to maintain the overlapping portions of the strips inth'eir respective positions.

3. In furniture spring construction, a frame, metal strips arranged longitudinally and trans versely within the frame, whereby they overlap, a comparatively stiif sheet, fabric covering for the top and bottom surfaces of the sheet, the sheet and fabric having coinciding slits, certain of the slits being at an angle to other slits, the metal strips being woven respectively through the slits that extend at an angle to each other, whereby to hold the sheet against slipping in either of two directions, the sheet and the fabric covering being disposed between overlapping portions of the metal strips, the sheet providing comparative rigidity to the spring construction and the fabric covering reducing friction between the metal strips and the stiffener.

4. In a spring construction, the combination of a frame, overlapping metal strips arranged within the frame, resilient means supporting the strips within the frame, a bottom member comprising a comparatively stiff sheet of material and a fabric covering the bottom member having slits in the planes of the strips, the strips being woven in and out of said slits in such a manner that the strips are respectively above and below portions of the bottom member at the overlapping portions of the strips, and a series of coiled springs mounted on the bottom member.

5. Spring construction of the character described, comprising a frame, metal strips arranged longitudinally and transversely within the frame, resilient means supporting the strips within the frame, a, comparatively stiff but flexible bottom member having series of slits arranged in pairs, adjacent pairs of the slits being oppositely arranged, and the strips being woven in'andout through the slits, and springs mounted on the bottom member.

6. Spring construction of the character described, comprising a frame, metal strips arranged within the frame, a pressed cardboard bottom member, a burlap bag enveloping the cardboard, the cardboard and burlap bag having coinciding slits, the strips being woventhrough said slits,

and springs mounted on the bottom member, the,

bottom member separating the metal strips from each other and separating the springs from the strips.

7. In furniture spring construction, the combi, nation of a frame, metal strips resiliently supported within the frame, a bottom element comprising a comparatively stiff member and a fabric top covering for said member, the bottom element

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