US2313443A - Padded spring cushion unit - Google Patents

Description

March 9, 1943'.

A. KRAKAUER PADDED`-SPRING CUSHION UNIT Filed Oct. 25, 1940 INVENTOR erallam'rakauef B Y Y 7A ,.7

` A TORNEY Patented Mar. 9, 1943 Unirse* STATES VParleur T OFFICE y PADDED SPRNG CUSHION UNIT Abraham Krakauer, Brooklyn,

Kay

N. Y., assigner to Manufacturing' Corporation, Brooklyn,

This invention relates to inner spring cushions and particularly to the padding therefor.

Inner spring units have customarily been enclosed in burlap or the like casings and shipped in that condition, or without'burlap or other covers, to the upholsterer or furniture manufacturer. To additionally pad the cushion, separate pads of sisal or the like have also been supplied for arrangement bythe upholsterer around the unit. To complete the cushion, the upholsterer arranges a sisal pad on each face of the unit, and if desired also on its side and end edges, which pad is then covered with a layer of cotton or the like batting, the whole being finally enclosed in the outer wearing cover of the cushion. v The separate handling and shipment of the sisal pads and spring units and their later assembly into the cushion has appeared heretofore to be unavoidable. It is expensive and wasteful, however, owing to loss of sisal from the pads and its adhesion to fabric and other parts, necessitating cleaning. I have found it possible largely to obviate these diiculties by preassembling the inner spring unit with its sisal padding in advance of shipment andin such a manner that the sisal fibers are largely covered and held in place and shedding of sisal is substantially eliminated, as is the upholsterers time and labor heretofore needed to select and arrange the padding. p My invention therefore contemplates the provision of an inner spring unit preformed with padding which is so held to the unit that shedvding of the padding material is substantially prevented and the other difliculties mentioned are overcome. f

My invention further contemplates the provision of a spring cushionfstructure wherein the sisal fibers are arranged directly -against the 'springs of the spring unit to sound-insulate the springs while the burlap backing for the. sisal padding 'is arranged outwardly of the fibers thereby confining the sisal in place against shedf ding. My invention further contemplateslthe use of padding `in the form of ya'mairiinner layer, a fabric cover for the layera-nd a' 'secondary outer layer, both layers ,being secured to the fabric cover, andthe padding being adequately secured to the metallic inner spring unit to produce a prepadded spring unit capable of shipment to the place where the cushion is to be completed.

The various objects of the invention will be follows and In the practical embodiment of the invention Y which I have shown by way of example, the inner spring unit IIJ is of the usual type comprising springs II and connecting wires I2 or the like suitably secured together. As the padding for the spring unit, I prefer to use two similar lengths of burlap-backed sisal padding. As shown in Fig. 3, the sisal layer lI3 of the padding is made up of heterogeneously arranged sisal bers mounted on the inner face of the burlap backing sheet I4. The sisal fibers I3 are needled to project in the general form of loops through the outer face of the burlap sheet as at I5 and thereby to present a secondary set of sisal fibers on said outer face.

The fibers I5 are firmly secured to the burlap sheet and while comparatively few in number, said fibers form a secondary cushioning layer on the face of the burlap sheet, which layer is not likely to shed. The burlap sheet with its attached inner and outer sisal layers is cut to the desired length and arranged with the sisal layer I3 inwardly or in direct contact with the outermost coils of the springs of the spring unit I0 whereby the sisal fibers tend to work their way to a slight extent into the inside of each of the springs II and between the adjacent coils of adjacent springs, thereby sound-insulating the springs and silencing possible clicking noises which might occur when the coils move past each other when in contact. Y 1 Two lengths as .I1 and -I8 of burlap-backed sisal are used to provide anV enclosing padding for the spring unit. In each of the lengths, the secondary or outer layer extends along longitudinal parallel lines. In the length I'I, the needlingof the projectingY bers I5 is accomplished in the generaldirection of the lines 20, the looped bers I5, Vafter needling, being brushed if desired to raise them an appreciable distance beyond the outer surface of the burlap sheet. The width of the upper surface of the length I'I is somewhat greater than the width of the spring structure II) combined with the thicknesses of Similarly, the extreme end edge parts of the i side flaps 2| and 22 of the length I8 are bent underneath the wide portion I9 of the padding length I1 to cover part of the upper surface of the spring unit and to provide peripheral portions as 26 and 36 thereon held in place by the respective projecting edge portions 21 and 30 of said wide part I9. The edge portion 21 of the length I1 is secured to the tucked in portion 26 at the edge of the-,flap 42| by suitable hog rings as 28 passing through both padding lengths and encompassing the border wire I2 of the spring structure, and if desired, passing-also around the end coils of the marginal springs. Similar hog rings as 29 are provided at the other edge 30 of the piece I1, while at the bottom of the unit additional hog rings as 3| secure the tucked-in lower edge 40 of the flap 23 to the peripheral edge portion of the length` I8. The edge of the flap 24 is similarly tucked in and secured to the edge 32 of the length I8 and to the adjacent marginal wires of the cushion unit.

It will be noted that the tufts of sisal needled through the burlap backing for the length IB are arranged along lines as 33 at substantially right angles to the similar lines 25 of the length I1, whereby it becomes immaterial which wide face of the unit is made the top or bottom, both being uniformly resilient. It will also be noted that the spring unit I0 is enclosed completely with sisal padding held thereto by the hog rings above-described, so that shedding of sisal -to any material extent cannot occur. It will also be understood that the needled and brushed tufts of sisal along the'lines 20 and 33 arein looped form and being connected through .the burlap with the padding fibers I 3, cannot shed, but serve as an auxiliary outer smaller cushioning layer on which the cotton batting 34 may be arranged. The auxiliary cushion thus formed by the projecting tufts enters the cotton batting 34 to some extent and holds said batting in place against its tendency to slip. The outer Acovering 35 ofthe cushion is secured in place in the usual manner outwardly of the cotton Vbatting `and I serves to hold ,all the layers in placeagainst displacement under the stresses of use.

It will be seen that the cushion as shown in Fig. 1 and consisting of the inner spring unit and the parts I1 and I8 assembled with and se` cured thereto, may be shipped as a unit Yto the place wherethe cushion is to be upholstered. There, the upholsterer need not arrange any sisal pads in place as has been heretofore necessary, but merely covers the cushion with the layer of ycotton batting and applies and secures the. outside cover to rapidly complete thev cushion with a minimum of shedding of excessmaterial, thereby 'keeping vthe material comparatively clean and neat.

While I have shown and described a specific embodiment of the invention, I do not wish to be understood as limiting myself thereto, but intend to claim the invention as broadly as may be permitted by the state of the prior art and the scope of the appended claims.

I claim:

1. A substantially square preassembled padded cushion unit adapted to be shipped and handled with a minimum loss of padding material comprising an inner spring unit, a rst length of padding covering the top and two opposed end vwalls of the unit, a second length of padding cov- Cal ering the bottom and the other two opposed side walls of the unit, the rst length having end edge portions bent into overlapping relation with the bottom Wall of the second length, and the l second length having end edge portions bent into overlapping relation to the top wall of the first length, each of the lengths comprising a sisal pad, a burlap backing having one face thereof in contact with thepad, andsisal fibers extending from the pad through the backing past the other face thereof and forming pro-` jecting tufts on said other face, the sisal pad being in contact with the spring unit and theprojecting tufts being exposed on the outer face of the lengths, and hog rings each passing through adjacent edge portions of said lengths and around an adjacent part of the spring unit.

2. In a spring cushion, an inner spring unit, a pair of similar lengths of burlap-backed sisal padding, one of said .lengths being arranged with the sisal thereof against the unit and covering Y, one face and a pair of opposed walls of the unit,

the other length being arranged with the sisal thereof covering the other face and the other pair of opposed walls of the unit, the sisal padding being needled through the burlap back of each length to form projecting tufts along longitudinal lines, the longitudinal lines of tufts of one length being at substantially right angles to the longitudinal lines of tufts of the other length, and means for securing the end parts of one length to the edge parts of the other length and to the spring unit to form a padded unit adapted to be shipped and handled with a minimum shedding of sisal from the padding.

3. A preassembled spring andl padding unit for a spring cushion adapted to be shipped and handled without material loss of padding material comprising an inner spring unit having a top, bottom, two end walls and two side walls, and a pair of crossed and partly overlapping lengths of padding material, each length comprising a sisal layer arranged against the unit, a burlap backing for the sisal outwardly of the unit and sisal fibers projecting through the backing outwardly thereof, one of the lengths of padding covering the top and both end walls of of the unit, the other length covering the bottom and both side walls of the unit, the respective end parts of the respective lengths being arranged in adjacent relation to the respective side parts of the other length, and securing means engaging adjacent end and edge parts of the respective lengths and passing around the adjacent part of the unit to secure saidparts to each other and to the unit.

; ABRAHAM 'KRAKAUER

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