US2315543A - Spring structure - Google Patents

Description

April 6,1943.

J. PlLn-:Ro ETAL l 2,315,543

SPRING STRUCTURE Filed Feb. '7, 1958l 3 sheets-sheet 1 2 7 54 i E a 2i A $2 38 3o* A Iv l u E E IQ..

j 3 I g5 49 l T97 19 l :v 49 47!" 3a E17@ 45 Y 3 I 1 er Il [74 r- I E I 1./ m I I` April 6, 1943. J. PILIER ETAL SPRING STRUCTURE Filed Feb. 7, 1258 3 Sheets-Sheet 2 helm.

4 C rl m. n a nu lh.. 5 v w. n 7 y y l April 6, 1943.

J` PILIERO ETAL SPRING STRUCTURE Filed Feb. '7, 1938 Patented Apr. 6, 1943 SPRING STRUCTURE James Piliero,

Long Island City, and Nathan Goldberg, New York, N. Y., assignors, by mesne assignments, to Dickson Wire & Cable Corporation, Long Island City, N. Y.,

of New York a corporation Application February 7, 1938', Serial No. 189,032

16 Claims.

The present invention relates to improvements in spring structures, and has particular reference to bed springs having a top platform surface.

One of the objects of the invention is to provide a novel bed spring structure having a top platform surface defined by a rigid border frame, and a plurality of intercrossing exible suspension members anchored at the ends to the side and end members of the frame, and tied together at the points of crossing out of direct contact and for free independent relative sliding movement.

A general object is to provide a spring structure of the foregoing character which is simple and sturdy in construction, which is highly eX- ibl-e and has a floating spring action, and which is noiseless in use.

Another object is to provide new and improved means -for resiliently connecting the opposite ends of the suspension members to the border frame, saidmeans affording a strong and readily assembled anchorage, and equalizing the distribution of load on the diierent members.

A further object is to provide novel connecter means for the suspension members at the points of crossing, whereby the members are interconnected for free independent relative sliding movement, but held and guided out of direct Contact with each other to prevent wear and noise.

Stili another object is to provide a new and ii.. proved bed spring structure having a sectional border frame comprising prefabricated side and rigidly connected at the adjacent nreabricated corner pieces.

A further object is to provid-e a novel bed spring structure havng an upper border 'trarne in which the side and end members are reeniorced to withstand the tension under load of intercrossing suspension members connected thereto and defining a top platform surface.

Another object is to provide a new and improved bed spring structure comprising a plus rality of vertical coil springs arranged in longitudinal and transverse rows, and a plurality of plates springsupportedV and partially closing the fircumscribed by the upper convolutions of the co springs.

Further objects and advantages will become .t the description proceeds. he accompanying drawings, Figure l is a ry plan View of one corner of a bed .spring sono ure embodying 'ne features of our inve tion.

Fig. 2 is a fragmentary longitudinal vertical sectional View taken substantially along broken line 2-2 of Fig. l.

Fig. 3 is a fragmentary perspective View of the spring structure.

Fig. 4 is a detail plan view of one of the coil springs forming part of the spring structure.

Fig. 5 is a perspective vievv on an enlarged scale of one of the connecters for the intercrcssing longitudinal and trans-verse suspension members, with the parts of the connecter shown in disassociated relation. v

Fig. 6 is a fragmentary perspective view of one of the anchors for the ends oi the suspension members.

Fig. 7 is a detail line 'l-l of Fig, 6. t

Fig. 8 vis a plan View on a reduced scale of the frame structure of the spring.

Fig. 9 is a transverse sectional view takenralong line 9-9 of Fig. 8.

Fig. l() is a fragmentary vertical transverse sectional View of the spring structure.

Fig. l1 is a fragmentary vieW of the underside of one of the upper corner joints ol the frame structure.

Fig. 12 is a fragmentary view of the underside of one of the lower corner joints of the frame structure.

While the invention is susceptible of various modications and alternative constructions, we have shown in the drawings and will herein describe in detail the preferred embodiment, but it is to be understood that we do not thereby intend to limit the invention to the specific form disclosed, but intend to cover all modifications and alternative constructions falling Within the spirit and scope of the invention as expressedin the appended claims.

The present invention relates to a spring structure having a novel platform top which has a flexible spring action with localized floating cl1aracteristics, which is sturdy and durable, and which is silent or noiseless in use. The platform top may be utilized in various types and kinds or" spring structures, for example, With or Without coil springs, and in spring structures having one or more spring decks.

Referring more particularly to the drawings, the spring structure, constituting the exemplary embodiment of the invention, is of the double deck type adapted particularly for beds and comprising a plurality of vertical double deck coil springs i sup-ported in a frame structure 2 substantially rectangular in border outline. These springs may be arranged in any suitable manner,

sectional view taken along for example, in longitudinal and transverse rows. Preferably, the lower deck portions of the springs I are cylindrical coils, and the upper deck portions are upwardly expanding spiral coils.

The frame structure 2 comprises spaced upper and lower border frames 3 and i and an intermediate border wire 5 at the juncture of the upper and lower spring decks. The frames 3 and 4 are of rigid metal construction, suitably braced and reenforced to withstand lateral flex-V ure. Preferably, both frames are of angle iron construction. Thus, the frame 3 has a vertical llange 6 and an inwardly projecting horizontal flange I at the upper edge. Similarly, the frame 4 has a vertical flange B and an outwardly projecting horizontal llange 9 at the upper edge and disposed directly beneath and in parallel relation to the ilange l.

Frame sections of the general type herein exemplied have commonly been made in a single piece bent at the corners and with the ends brought together and connected by a joint in one of the transverse flights. In the present instance, each of the frames 3 and 4 is sectional in construction, and more particularly consists of prefabricated side or longitudinal and transverse or end angle iron members IG and Il rigidly connected at the ends by curved or arcuate cast metal corner pieces I2. At a result, the Various elements of the frame can be premade in standard forms and lengths for assembly into frames of different sizes. Substantially all commercial bed springs are now made in a standard length and vary only in width. Hence, it is possible to construct frames of diierent standard sizes by substituting end members H of different lengths in assembly with standard longitudinal members IIJ and corner pieces I2. The sectional construction avoids the necessity and incon- Venience of bending long frame pieces, and permits the use of a relatively sharp radius at the corners of the frame shaped to conform to the top convolutions of the springs i. Also, the corner pieces I2 being separately fabricated, need not be of the same stock as the members I0 and II but can be made of a hard steel to provide greater strength and rigidity.

The corner pieces I2 are angle structures to conform in shape to the frame members I9 and II.V Thus, each of the upper corner pieces is reenforced by an outer marginal depending flange or skirt I3, and each of the lower corner pieces I2 is reenforced by an inner marginal depending iiange or skirt I4 (see Figs. 1l and 12).v The top surfaces of the upper and lower corner pieces I2 may be formed with radial ribs I5, and the inner arcuate edges of the upper corner pieces may be serrated as indicated at I6 for ornamental purposes. The corner pieces I2 are rigidly connected at the ends, as by means of rivets I'I, respectively, to the contiguous ends of the members Ii) and II. Preferably, the ends of the corner pieces I2 are formed with oiTset angle iron extensions I B which overlap and interiit with the'insides of the members I and II, and which in eiTect denne right-angled recesses I9 of such depth that the angle portions of the corner pieces are in alignment and hence flush with the corresponding angle portions of the frame members. Suitable shoulders 22 at the inner ends of the recesses i9 serve to locate the parts accurately in position of assembly. By the foregoing construction, the frame members I0 and II are connected by strong reenforced joints located at points least subjected to and affected by the lateral stresses and strains of the frame structure 2.

Both border frames 3 and 4 are suitably braced against lateral deformation and to provide a base mounting or supporting for the springs I. Thus, a plurality of parallel reenforcing cross bars or slats 2l, preferably T-shaped in cross section, are connected at their ends to the undersides of the horizontal flanges 'l of the longitudinal frame members I2 of the frame 3 (see Fig. 9). The bars 2i are located respectively between different transverse rows of the springs I, and substantially in the horizontal plane of the lower convolutions of the springs, and the end portions are curved upwardly and then outwardly for connection to the frame members Iii. Similarly, a plurality of parallel bottom cross bars or slats 22 (see Figs. 3 to 10) are connected at their ends to the vertical anges 8 of the longitudinal frame members I8 of the frame In the present instance, the slats 22 consist of nat metal strips disposed vertically on edge and with their end portions twisted into a horizontal plane and onset upwardly into the plane of the ilanges 9. At their extreme ends, the slats 22 are struck downwardly to provide flanges 22 fitting against and riveted to the flanges 8 of the lower frame members IS. 'The cross slats 22 respectively underlie the transverse rows of springs I, with the exception of the end rows.

Suitable crimp wires 23, in lieu of slats, respectively underlie the transverse end rows of springs I, and are anchored to the anges 8 of the lower frame members I2. A plurality of longitudinal crimp wires 24 cross the slats 22 and the wires 23, and are anchored at their ends to the anges 8 of the lower end frame members II. In the present instance, the intermediate wires 24 extend over, and are crimped to engage or seat in notches 25 formed in the upper edges of the cross slats 22. The two outermost wires 24 extend underneath the raised opposite end portions of the slats 22 (see Fig. 3).

The slats 22 and the wires 23 and 24 serve to support the lower ends of the springs I. In the present instance, the lower convolutions of the springs I in the transverse end rows are suitably interthreaded with the crimp wires 23 and 24 at the points of crossing. The lower convolutions of the side marginal springs I rest on the raised end portions of the slats 22 and are interthreaded with the outermost wires 24. The lower convolutions of the remaining springs I, i. e., the springs intermediate the end and side mar ginal rows, are threaded through openings 26 in the slats 22, and rest on the intermediate longitudinal crimp wires 24. Between the successive springs I of the intermediate longitudinal rows, the crimp wires 26 are bent upwardly to form separating projections 2l.

The central or intermediate convolutions of the springs I, between the upper and lower deck portions, are suitably interthreaded with a plurality of transverse and longitudinal tie members 28 and 29 at the points of crossing. In the present instance. the tie members 23 and 29 are in the form of thin flexible straps or bands anchored to the longitudinal and transverse nights of the intermediate border wire 5, and extend closely between the central spring convolutions (see Fig. 2). The bands are crimped within the connes of the central convolutions to form downwardly offset portions 32 and SI restraining the convolutions against relative lateral clisplacement.

The top convolutions of the border rows ci springs I-arerigidly anchored to the underside of the flange 1 of the frame 32. Spanning the area circurnscribed by the upper frame 3 to form a yieldableu platform sleeping surface are a plurality ofparallel flexible intercrcssing suspension members 33 and 34: These'niernbers may be arranged in variousdirections and angular relationships, and. preferably are perpendicular to each other: and extend transversely and longitudinally of the frame3 intermediate the'top convolutions of the springs. and directly over and along'the cross braces 2l. rThe suspension members 33 and also may be provided in various forms, andpreferably consist of twisted strand wirer cables which have been prestretched. Any suitable number oicables 33 and. 34 may be employed; andy in the present instance they are arrangedA in sets of three between thev contiguous rows .of springs I transversely andA longitudinally of ther frame 3` The cables StandV 34extend, without intermediate anchorage orv interconnection, through the full dimensions. of the frame 3, and more particularly are suitably connected at their opposite endsunder proper tension to the flanges 'l of the upper members IIB and Il.

Preferably, the cables of each set consist of. separate lengths which are .separately connected to `the border frame 3 by individual helical ten-v sion springs 35. Tightly clamped on each end of each cable is a split anchor sleeve 36 f. see Figs. 6 and '7) In assembly, the end of the cable is eX- tended substantially entirely through the sleeve 36;.and then the sleeve is lperi-plierally contracted into tight engagement therewith. Thereafter, the. outer end of the sleeve 3S isnattened, as indicated at 31, thereby spreading wire strands (see Fig. 7) to obtain a strong grip to withstand the cable tension. The inner ends of the springs 35` are hooked respectively through apertures 38y inthe flattened ends 31 oflthe. sleeves f The outer ends. of each set of individual springs 35i-are hooked through apertures 3S in series oi lugs or ears fifi'. on one longitudinal edge of an anchor plate di. Each plate #il is secured against the underside of the flange 1, by means ci a. single central rivet t2; and is 1eid against. turning by engageinentlwit. thein he :ilange rcng and flexible, and present if; present would be likely to d overlying bedding. By anchoring the cables and 3&4 di rectly to the side and end incrnbers ii H' of the upper border 3 en increase airy ing: power is obtained. All of the cablessubstantially continuously trav-erseor full length or lwidth of the spring structure, frictionally independent of; each other solthat the stresses are uniformly assu-ined and hence equalized. The side members. lil of the upper frame 3 are reeniorced by the cross braces- 2 tol withstand the lateral stresses exerteflthereon by the cables 33, particularly when under load. To .prevent inward fiexure by stresses exerted by the cables 3ft, the end members il of the frame 3 are suitably strengthened as by forming. each member with the major intermediate portion offset outwardly (see Fig. Si

The sets of cables 33 and 'J4 at the various points of crossing are confined in parallel spa d relation and'yet separated and guided for free independent action by a plurality of floating-ccnnecters 43 (see Fig. 5). Ii the intercrossing cables were in directcontact they would tendy to 3 by means of rivets other against movement along the set iup-friction and to slap against each other, thereby resulting in highly objectionable noise and wear. The conn'ecters 43 avoid theseobjections by coniining the cables against whippingv and slapping, and by maintaining the cables out ci"` direct rubbing engagement.

Varoius forms of connecters i3 may be provided within the broad concept of the invention, vand in the present instance each is shown as comprising two at plates li and 45 suitably secured or held together. The plates 4e and e5 are generally square in outline and are formed at the four corners with outwardly projecting apertured ears 46. Each plate is provided on one side with a plurality of parallel guides lll' adapted siidably to receive the individual cables of any one set. In the present instance, the guides fil are formed by cutting laterally spaced sets of parallel slits 48- in the plate, and then stamping out the metal between the slits of each set from one to form a seinicylindrioal groove open at the ends to the other side. .ln assembly, the lowerv plate 44 is inverted with the guides l on the underside and. disposed to receive one set ci transverse cables 33. The upper plate [l5 is superi-.niposed on the plate lill with the guides el on the top and angularly disposed to receive one set of longitudinal .cables 34. It will be seen that the interorossing cables 33 and 35 are separated by the body portions of the plates fifi and i, and are independently constrained for .tree longitudinal displacement `bv the respective guides Ill. When the plates le and i5 are interattached, each serves by reason of the perpendicular d.is position of the cables 33 and to restrain the cables extending therethrough. Consequently, the cables 43. and 44/ are maintained in dehnite arrang ent without rigid interconnection and without interfering with their free individual action.

It will be evident that the cables Sil and anchored to theupper and interconnected by theconnecters 43 described, constitute in. themselves a resilient spring platform surface- When used with coil springs l, as in the present embodiment, the u ccnvolutions of the springs are tied in position by connection with the connecte-rs e3. Thus, a plurality of in dividual helical tension springs @Si are hooked at one end respectively through the apertured corner lugs or ears E of each set of plates itil and 45, and are connected at the other end to the top convolutions of the four adjacent coil springs l. r,The springs serve to hold 'the plates M andv 4%. of the various connectors in close superimposed relation.

To prevent theA bedding from entering the coil springs i, a plurality or" plates E@ are yieldably suspended respectively wi iin the areas circumscribed by the top convolutions. ln the present instance, each plate Sli (see Fig ll is of cloverleaf design, comprising four apertured radial leaves 5l. Four helical tension springs 52 are connected at their outer ends to the top convolution of the associated coil spring i, and are hooked at their inner ends 'through the leaves to sup port the oloverleai plate substantially in. a central vposition over the .inner spring area.

It will Ibe seen that `we have provided a new and highly efficient spring .struct-ure. The suspension elements 33 and 34 provi a platform spring surface which is noiseless in which .has a high carrying power, and which has a Floating action, i. e., ailords localized spring action. The various resilient parts of the spring structure are eiectively held in predetermined arrangement, and yet are free for independent stress and action and not subject to rubbing friction and wear. The upper frame 3 which supports the suspension elements 33 and 3i! is rigid and sturdy in construction, and is strengthened to resist lateral flexure of the side and end members iii and H.

We claim as our invention:

l. In a spring structure, in combination, a frame structure having upper and lower border frames each comprising parallel side and end members, a plurality of springs supported from said lower border frame and arranged in longitudinal and transverse rows, a plurality of elongated iiexible supporting elements extending in parallel relation in one direction across said frame structure and anchored under tension to said upper border frame, a plurality of elongated flexible supporting elements extending in lparallel relation in another direction across said frame structure and said first mentioned elements, and anchored under tension to said upper border frame, a plurality of connecters tying said elements together at the various points of crossing for free independent relative sliding movement and out of direct lcontact with each other, and means for resiliently securing said connecters to the upper convolutions of said springs.

2. In a spring structure, in combination, a border frame having spaced parallel side and end members Awith depending flanges and inwardly extending horizontal flanges, a plurality of pan alle] sets of supporting strand wire cables eX- tending continuously substantially the length of said frame, a plurality of parallel sets of supporting strand Wire cables extending continuously substantially throughout the Width of said fra-me and crosswise of said first mentioned cables, anchor sleeves connected respectively to the ends of said cables and having outer apertured ends, a plurality of individual helical tension springs hooked respectively through said apertured ends, a plurality of anchor 'plates secured against the undersides of said horizontal flanges and constrained against rotation by said depending flanges, each anchor plate having a plurality of apertures and the sets of helical springs at opposite ends of said cables being hooked respectively through said plate apertures, and a plurality of connecters tying said generally longitudinal and transverse sets of cables together at the points of crossing, each connecter comprising an upper plate with parallel guides on the top slidably receiving one set of cables in overlying relation to said plate, and a lower plate with parallel guides on the bottom slidably receiving a cross set of cables in underlying relation to said lower plate, and means for maintaining said plates in superimposed relation.

3. In a spring structure, in combination, a border Iframe having spaced parallel side and end members, a plurality of parallel sets of supporting cables extending continuously substantially throughout the length of said frame, a plurality of parallel sets of supporting cables extending continuously substantially throughout the width of said frame and generally crosswise or said iirst mentioned cables, a plurality of helical tension springs connecting the ends of said cables to said frame members, a plurality or connecters tying said generally longitudinal and transverse sets of cables together at the points of crossing, each connecter comprising an upper plate with parallel guides on the top slidably receiving one throughout set oi cables in overlying relation to said plate, and a lower plate Iwith parallel guides on the bottom slidably receiving a cross set of cables in underlying relation to said lower plate, and means for maintaining said plates in superimposed relation.

4. In a spring structure, in combination, a border frame having spaced generally parallel side and end members, a plurality of generally parallel Iiexible supporting elements extending continuously substantially throughout one general dimension of said frame and anchored at the ends under tension to said frame, a plurality of generally parallel flexible supporting elements extending continuously substantially throughout another general dimension of said fra-me crossing said first dimension and anchored at the ends under tension to said frame, a plurality of connecters tying said elements slidably together at the points of crossing, each connecter comprising an upper plate with guide means on the top slidably receiving one `of said elements in overlying relation to said plate, a lower plate with guide means on the bottom slidably receiving one of the crossing elements in underlying relation to said lower plate, and means for maintaining said plates substantially in superimposed relation.

5. In a spring structure, in combination, a border frame having spaced generally parallel side and end members, a plurality of generally parallel iiexible supporting elements extending continuously substantially throughout one general dimension of said frame and anchored at the ends under tension to said frame, a plurality of generally parallel exible supporting elements extending continuously substantially throughout another general dimension of said frame crossing said first dimension and anchored a1; the ends under tension to said frame, and a plurality of connecters tying said elements slidably together at the points of crossing', each connecter comprising plate means separating the crossing elements and having means on opposite sides for individually guiding the crossing elements for free relative silding movement across the opposite outside surfaces of said plate means out of direct Contact with each other.

6. In a spring structure, a separator for two crossing sets of parallel suspension elements, said separator comprising a plate formed with a plurality of spaced parallel grooves in one side and opening at the ends to the other side to slidably receive one set of said elements, and a second plate formed with a plurality of spaced parallel grooves in one side inclined to said rst mentioned grooves and opening at the ends to the other side to slidably receive the other set of ele ments, said plates being connected with theirl grooved faces in adjacent relation, whereby said elements are adapted to be individually guided in their respective directions for free independent longitudinal movement and the elements of said respective sets are adapted to be separated by said plates.

'7. In a spring structure, in combination, a border frame having spaced generally parallel side and end members, a plurality of parallel sets of supporting cables extending continuously substantially across the area circumscribed by said frame and resiliently anchored at possible ends to said frame, a plurality of parallel sets of supporting cables extending continuously substantially across said area and crossing said rst mentioned cables and resiliently anchored at opposite ends to said frame, and a plurality of cable connecters tying said cables together respectively at the various points oi crossing, each connector having two spaced sets of spaced guide passages respectively confining the cables of two intercrossing sets to maintain the cables of each set and-the two sets of cables in spaced relation for independent relative sliding movement out of direct contact with each other.

8. In a spring structure, in combination, a border frame having two spaced parallel members with inwardly extending horizontal flanges and with outwardly depending flanges, yieldable supporting means mounted within said frame and including a plurality of parallel elongated ilexible supporting elements substantially spanning said frame, an anchor plate mounted against the underside of the horizontal iiange and edgewise closely to the inside of the depending flange of one of said members having an aperture overlying said plate, a single connecting member extending through said aperture and serving as a sole means to secure said plate to said horizontaliilange, a plurality of springs connecting said elements at one end in parallel to said plate, and means for anchoring said elements at the other end to said frame.

9. In a spring structure, a separator for two crossing sets of parallel flexible suspension elements, said separator comprising plate means formed with a plurality of parallel spaced passages on one side to receive and guide one set of said elements for independent sliding movement out of direct contact with each other and formed with a plurality of parallel spaced passages on the other side and inclined to said iirst mentioned passages, said last mentioned passages being adapted to receive and guide the other set of elements for independent sliding movement out of direct contact with each other and with the elements of said one set.

10. In a spring structure, in combination, a frame having two spaced parallel rigid frame members, a plurality of vertical coil springs mounted in said frame and arranged in rows across one dimension of said frame, a plurality of parallel sets of parallel stranded wire cables extending between said rows of springs in parallel relation thereto and resiliently anchored at opposite ends to said frame members, and a plurality of connecters for tying said cables to the tops of said springs, each connecter comprising plate means formed with a plurality of parallel passages adapted to receive and guide the cables of one set for independent relative sliding movement out of direct contact with each other and in definite spaced relation, and spring means for yieldably connecting each of said connecters respectively to the upper convolutions of the four adjacent coil springs.

11. In a spring structure, in combination, a frame having two spaced parallel rigid end members, a plurality of Vertical coil springs mounted in said frame and arranged in rows across one dimension of said frame, a plurality of parallel sets oi parallel stranded wire cables extending between said rows of springs in parallel relation thereto, a plurality of anchor plates secured to said frame members respectively in alignment with the opposite ends of said sets of cables, a plurality of individual tension springs respectively connecting the cables of each set at one end to the adjacent anchor plate, and a plurality of connecters for tying said cables to the tops of said springs, each connecter comprising plate means formed with a plurality of parallel passages Cil adapted to receive and guide the cables of-one set for independent yrelative sliding movement out of direct contact with each other and in definite spaced relation, and spring means for yieldably connecting each `oi said connecters respectively to the upper convolutions of the -iour adjacent coil springs.

12.1n a spring-structure, in combination, a border frame having rigidly interconnected spaced end members and spaced-side members, saidmembers having an inwardly extending top flange substantially about the area circumscribed by said frame, a plurality of strand wire cables extending rectiiinearly in cross directions without rigid intermediate vllongitudinal anchorage substantially over the span of said frame,-anchor sleeves clamped respectively about the ends of said cables and each having a ilat apertured free end portion, a plurality of apertured ears rigid with said ilange and projecting inwardly therefrom, resilient means connecting the apertured portions of said sleeves to said'apertured ears so as to .tension said cables, and `means connecting the intercrossing cables vat the various points of crossing and serving to .guideV said cables -individually for free relative longitudinal movement out of'direct sliding contact with each other.

13. In a spring structure, in combination, a frame having two spaced parallel rigid frame members, a plurality of vertical coil springs mounted in said frame and arranged in rows across one dimension of said frame, a plurality of parallel sets of parallel stranded wire cables extending between said rows of springs in parallel 1elaticn thereto and resiliently anchored at opposite ends to said frame members, and a pluraiity of connecters for tying said cables to the tops of said springs, each connecter comprising plate means formed with a plurality of parallel passages receiving the cables of one set and acting to maintain them out of direct contact with each other and in denite spaced relation, and spring means for yieldably connecting each of said connecters respectively to the upper convolutions of the four adjacent coil springs.

14. In a spring structure, in combination, a frame having two spaced parallel rigid frame end members, a plurality of vertical coil springs mounted in said frame and arranged in rows across one dimension of said frame, a plurality of parallel sets of parallel wire cables extending between said rows of springs in parallel relation thereto, a plurality of plates secured to said frame members respectively in alinement with the opposite ends of said sets of cables, a plurality of individual tension springs respectively connecting the cables of each set at one end to the adjacent plate, and a plurality of connecters for tying said cables to the tops of said Vertical springs, each connecter comprising plate means formed with a plurality of parallel passages receiving the cables oi one set and maintaining `hem out of direc-t contact with each othe' and in definite spaced relation, and spring means for yieldably connecting each of said connecters respectively to the upper convolutions of the four adjacent coil springs.

l5. In a spring structure, in combination, a frame having two spaced parallel rigid angle end members with horizontal inwardly extending top flanges, a plurality of vertical coil springs mounted in said frame and arranged in parallel rows extending longitudinally between said end members, a plurality of parallel sets of parallel round cables extending between certain ci said rows of springs in parallel relation thereto, each of said vsets consisting of three cables, a plurality of plates riveted to the under sides of said anges and each plate having three eyes, said plates being located respectively adjacent the ends of said sets of cables, a plurality of individual sleeves secured respectively about the ends of said cables and each having an eye, a plurality of individual coil tension springs respectively connecting the sleeves on the ends of said cables of said sets respectively to said plates, each tension spring at one end engaging in the eye of the associated sleeve and at the other end engaging in one eye of the associated plate, and a plurality of connecters for tying said sets of cables to the top convolutions of said vertical springs, each connecter comprising plate means formed with three spaced parallel recesses through which the cables of the associated set extend and in which said cables are confined out of direct contact with each other and in denite spaced relation, and individual coil tension springs yieldably `connecting each of said plate means to the upper convolutions of the four adjacent vertical springs.

16. n a spring structure, in combination, a frame having two spaced parallel rigid end members and two spaced parallel rigid side members, a plurality of vertical coil springs mounted in said frame and arranged in parallel rows extending'longitudinally and transversely between said members, a plurality of parallel sets of parallel round cables extending between certain of said rows of springs in parallel relation thereto, a plurality of plates secured to said end members and located respectively adjacent the ends of said sets of cables, a plurality of individual sleeves secured to the ends of said cables, a plurality of individual coil tension springs respectively connecting the sleeves on the ends of said cables of said sets respectively to said plates, cross members extending transversely of said cables between the transverse rows of said vertical springs and resiliently connected at their opposite ends to said side frame members, and a plurality of connecters for tying said sets of cables and said cross members together at the respective points of crossing and for tying them to the tops of said vertical springs, each conr1ecte1` comprising plate means formed with a plurality of parallel recesses through which the cables of the associated set eX- tend and in which said cables are conned out of direct contact with each other and in denite spaced relation, and individual coil tension springs yieldably connecting each of said plate means to the upper convolutions of the four adjacent vertical springs.

JAMES PILIERO. NATHAN GGLLDBERG.

CERTIHCATE oF CORRECTIQN. Patent No. 2,515,515. April 6, 19M.

JAMES PILIERO, ET AL.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows Page 2, second column, line 5, for "supporting" read --support; page 5, first co1- umn, line 62, for "braces 2" read --braces 21"; and second column, line Y, for "Varoius" read -Various; page 1L, second column, line YO, claim 7, for possible read -opposite-; and that the said Letters Patent should be read .with this correction therein that the same may conform to the record of the case in the Patent Office.

signed and sealed this 25th day of May, A. D. 19,45

Henry Van Arsdale,

(Seal) Acting Commissioner of Patents.

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