USRE18976E - Spring construction - Google Patents

Description

R. S. JONES SPRING CONSTRUCTION Oct. 24, 1933.

M @n.@nnang Original Filed Jan. 16, 193

1 QQ@ w l ATIQRNEYS.

Reissuea oct. 24, 1933 UNITED su 18,976 n SPRING coNs'raUc'rroN v Roy S. Jones, Anderson, Ind.,

Manufacturing ration original No. 1,915,674, dated June No.'587,106, January 16, 1932.

assg'nor to yBarber Co., Anderson, In'd., a corpo- 27, 1933, Serial Application for reissue August 14,'1933. Serial No. 685,133 2 Claims... (Gl. 5-353) The present vinvention is intended to 'eliminate' substantially Yall Y noise positioning of all coil springs.

Heretofore cushions have vbeen chiefly rectangular in outline; Whenever? an arched orcurved outline or side was required, vthe cushion manufacturer has been compelled to pad the cushion base at certain portions to obtain the enlargement or curvaturedesired;`

The present invention eliminates the requireand to insure permanent ment of this additional outline forming padding.y

The present invention also is intended to pro; vide exibility,`to wit', cushion units of different lengths maybe rigidly associated together to form abase construction for a completed cushion andin which the spring portion of the base sub'- stantially conforms to the'desir'ed outline oi" the completed cushion.

The full nature of the invention will be understood from the accompanying drawingand the following description and claims:-

In the drawing, Fig. 1 is a top plan View of a cushion base formedV from a plurality of cushion units, three ends of which are substantially straight and the other of which is arcuate'or curved, a part of the fabric enclosing the lsprings of the cushion units being removed for illustrating in detail the same and other parts.

Fig. 2 is anenlarged transverse sectional view through one portion of the cushion unit oi the unit base, coils being extended.

Fig; 3 is a perspective view of the spring unit, the fabric cover ybeing omitted.

Fig. 44 is a view similar to view 2 and of a modified form of the-invention, the'coils also being extended.

Fig. 5 is a View ,similar to Fig. v1 and of ka modied form ofthe invention.

Fig. l6 lis a view similar to and of the modification shown in Fig. 2 but with theA springs compressed. l

Fig. '7 is a View similar to Fig. 6, the coils being shown compressedl and kis of the modification shown in Fig. 4.

, In Fig. 3 of the drawing there is illustratedla I" plurality vof so-called double conical coil springs 10. These springs are positioned substantially parallel to each other and either in abutting or spacedrelation depending upon the amount of spacing desired between the. coils. Anopencoil twisted wire 11 is wound-about each coil. 10 at the upper'and lower coils and at` diametrically opposite points of ,eachl of-said coils. Each .ofl the four open coil twisted wiresk 11 extend from onek coil -to the next adjacent coil, forming aline of coils in tandem relation and thevnumber thereof-iis that desired or required and the spac- 1 ing thereof is that desired or required.

The wire 41l is formed with an open coil and is forced longitudinally and rotativly away vfrom the coil forming device andthe free end is applied to the coil 10. The wire, in its Arotative movement is threaded along the spring and after the free end clears the coil, a second coilis presented to'the ,free end distance, and it is similarly secured to the wire.V The desired number of coils in the -desired spaced relation are similarly anchored, -whereuponlllthe open coil twisted wire is severed.,V

The coil wiresy are extended'andpreferably overlap at the ends of the spring unit -asshown in Fig. 3, and in the left hand portion of Fig. 1. In place of four wires of open coil twistedtype, only two wires need beemployed .and in that event, one end coil will be at leasthalf way -enf. circled, and there will only bev a .singleoverlap indicated at l2 for each of the wires, while Fig .;3 shows four overlaps for the four wires. By the' word ,overlap", it is Yintended to conveyk the meaning that the openrcoil twisted wire ends are wound together. 'Ihe resultant construction is a spring unit in which the coils` desired are 'secured together in substantial tandem alignment and in the desired spaced relation and such spacing needpnot be uniform or identical..'When complete there results a unitary springrstructure of coils andcoiled Wires.- n. Y

g A-strip ofjute or gunny sack like-material used in the upholstery industry is indicated at 13 and includes a llongitudinal seaml as at 14.A This forms an open end tube which is maintained' in cushion unit relation when the spring unit is compressed 4and -inserted therein. The. `fabric cocoon or pocket 13 limits the expansion of the coils and determines the cross sectional depthfoi the cushion unit. The widthof thexcoil 10 together with the wires 11 determines'the width of the cushion unit. The units may be made in any lengthwidth and depth. -The ends of the at the properY space or l-:S PATENT 'oFFicEs-x miv cocoons or pockets are then closed by sewing, as at.15.

Whena square cushion is to be made, the desired number of units of identical length are positioned-side ivyV side, as indicated Pis. 1..,and suitably.` secured together. When acushionbase having a curved outline at one end is desired, a suitable number of cushion units are placed side by side, said units being of different lengths, :s

shown'in Figs. 1 and 5. In Fig. 1 thediierene in length in each unit is obtained by additional spacing between the coilsy lqeachz unit,

whue in Fig. 5, the additiomi-,ienstnisobtsmdf in one instance, by additional spacing between the coils in the spring unit andin anotherr inu stance is shown by additignalcgilsin fthe spring VThe cushion units are secured together by a' clip arrangement which consists of arr-,open c wire'lgadapted to bemounted in a tool such as apa'irpf pliers ora hog ringenand4 the twoj open ends; 17 ofthe-G are passed through the fabric an@ around the`l adjacent `wires` 11- andi around-- seeiij'igfl-the 'portionof the fcoil'flO" encircled bythe wiz-ell. lThe endsjl'thenare-drawn inwardlyin meeting or overlapping engagement,

' c :horage1 thus rigidlysecures'f'ea'ch of the cushion to the adjacent :cushion unit -at v both the topandjthe bottom of s aid-un'its-andthereby completed cushionbasge arthedesired flpfalvoutline'rotthe cushion. f' Y' I vAs showninFig. `5, theilrst two, left-*hand cushion units are secured? together inesubstanti ally the aforesaid manner; while the intermediate or middle cushion vis securedy tothe adjacentA unitary the Clips-'16; in ,some instances anchor,-V igigoiluto Vcoil andin other instances, anchoring '-0 of one unit-to the open twistedwirev n 'one @osceni smbi Whenitfls not desireclto have each cushion unit;v separate-from Veveryotherl cushion unitf'and then;sulagsequnilyV united thei'iio, two stripsof fabric,"30 and 31, of the desired dimensionsv are suitablysecured together at one end, asat V32, angat'the opposite end,'as at 33, and aresecured together' intermediate the same, as at 34,l thereby forginga plurality of parallel pockets or'concocoqlinsA having open ends; VEach cocoon thenreeives aspring unit of the desired length andtheneah of thecocoons assumes a'substanrectangular outline in cross'lsection-see u :j While injFigs.1 and -3 ltheopen twisted vwires ll'arexnshown in voverlapping relationyit is to' be' understood that each wire may terminate short 91';v overlapping relation without "departing tromtliefinventicn.. .f g

,Comparison offFigs o and 7 withl Figs 2j and Q rpectively, discloses that lwhen rthe cushion is glepressed'ror'loadedgthe vcoil springs collapse or are sufficiently Vvcompressed so that the end coils would normally engage each Aother'. V'How ever, e ach side wallgofthe cocoonv beingrelatively free bows Ainwardly upon c',o'nlpri.issionA and the fabric is interposed,V inlthe coils between theup'pc'r and lower coils andA these are therebyprevented fromdiregtly-engagingeach other with the re:4

sult, that'there'is no such engagement.v y

The aforesaid noise is VnOtorllV'due to axial contact but is chiefly due ltoilateral vcontactv be`Y noise normally incidentfto the respective coils vrub:acrosseach other' whenfthe cushicnis'floaded bya person-sitting down vthereon. -in other `wordsnormal doesV DFIP-95,3% -.manufcctureronly requires a clip ringer tool and not secure axial engagement of the coils except [from fabric manufacturers, the number of which relatively limited, and from which they have heretofore purchased the same fabric for other :each: upholsterer or furniture a suitable amountof clip wire which, as indivcatld,canbereadilyobtained, sincethe structure is; substantially thesame as that used inringing boss.

' From the foregoing, it will be apparent that, exptfor" the spring units, all of the labor to form the cushion base canbe readily performed in the upholstery plant; The resultant constructionoe'rsevery advantagewandrnone of the disadvantages of.:theiso-called-unit. cell. upholstery construction, which construction is one wherein every :coil spring 4is positioned in a -little housing. This unit ll construction-fis` the mostexpensive of any now `lmovrnto produce, ibecause 1 each spring coil must ,behandled separately andthe formation -of a: cushion :base 'requires .-intricate sewing and positioning'of fabric parts-together with the main sustaining or border wiresfwhereas z with the present-invention; .noiborder wires gether Vas. an 'independent'unitvv of predetermined lengt-h, a pluralityfo-.clonsated fabricfcocoons, each beingfiof; ai lensth'conespondins'to and telescopioally -reoeivingnand nesting: a Aspring unitof the same length therein, and meansconnecting the cocoonsitogether toform a complete V'cushion construction havingtwo parallel sides and aconnecting end offcurved formationffonned-by the f adjacentendwcoils of'all voftl'ie-units whereby the necessity f for a. curvcdi: border twirc is 'climinated; r. 2. In va spring .eonstructionrthe' combination of a plurality of 'elongated-'spring units, Itwo adjacent -`units beingof dissinlarlength, eachr ofthe two adjacent spring units comprising a plurality of Vtandem positioned=coilsprings arrangedin spaced relation," helixmeans at'the topY andbottom of each unit-and tangential tothe sides of the end coils of each'sprin'g inthe unitY for permanently connecting :the same together as `an independent-unit -of' predetermined length,` a plurality of-elongatedfabric cocoons each being ofna length corresponding to and telescopicallyv receiving and nesting asprlngunit of the same length therein, andlneansy connecting 'thereocoons together -to form` a f complete cushion voonstruction'having two parallel sides and `a 'connecting end of curved formation formed by-the adjacent end coils of all Voffthe units whereby the necessity for a 'curved border xwirevisveliminated.

, ROYB. 'JGNES.

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